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WO2018192108A1 - Dispositif de connexion étanche - Google Patents

Dispositif de connexion étanche Download PDF

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Publication number
WO2018192108A1
WO2018192108A1 PCT/CN2017/092550 CN2017092550W WO2018192108A1 WO 2018192108 A1 WO2018192108 A1 WO 2018192108A1 CN 2017092550 W CN2017092550 W CN 2017092550W WO 2018192108 A1 WO2018192108 A1 WO 2018192108A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking member
sealing
flange
port
connection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/092550
Other languages
English (en)
Chinese (zh)
Inventor
励行根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NINGBO TIANSHENG SEALING PACKING CO Ltd
Original Assignee
NINGBO TIANSHENG SEALING PACKING CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710258285.2A external-priority patent/CN107023724B/zh
Priority claimed from CN201710327590.2A external-priority patent/CN107013773A/zh
Priority claimed from CN201710403648.7A external-priority patent/CN107143708A/zh
Application filed by NINGBO TIANSHENG SEALING PACKING CO Ltd filed Critical NINGBO TIANSHENG SEALING PACKING CO Ltd
Publication of WO2018192108A1 publication Critical patent/WO2018192108A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings

Definitions

  • the present application relates to the field of sealing, and more particularly to a sealing connection device for connecting high temperature, high pressure, variable temperature and variable pressure fluid medium pipes and equipment.
  • the detachable flange seal connection is widely used in the sealing connection of pipelines and vessels in the chemical, energy and mechanical fields because of its simple structure and easy operation.
  • the traditional flange connection uses a fastening bolt to connect the two ports that need to be connected by flanges.
  • a sealing element is placed on the sealing surface of the flange port.
  • the fastening bolts also press the two end faces together and also press the sealing element tightly against the sealing surface along the axial direction of the flange.
  • a sealing connection device comprising: a first port member, a second port member, a first sealing member and a first locking member;
  • the first port member has a first connecting end, and a first flange is disposed at the first connecting end, the first flange has a first surface and a second surface spaced apart in the axial direction;
  • the second port member has a second connection end
  • the first connecting end is in abutment with the second connecting end to communicate the first port member with the second port member;
  • the first locking member will be the first sealing member Pressing the first in the first port member axially Between the second surface of the flange and the first locking member, the first port member and the second port member are sealed from the outside by the first sealing member.
  • a sealing connection device comprising: a first port member, a second port member, a sleeve, a first sealing member, a second sealing member, a first locking member and a second locking member;
  • the first port member has a first connecting end, and a first flange is disposed at the first connecting end, the first flange has a first surface and a second surface spaced apart in the axial direction;
  • the second port member has a second connecting end, and a second flange is disposed at the second connecting end, the second flange has a third surface and a fourth surface spaced apart in the axial direction;
  • the first connecting end is in abutment with the second connecting end, so that the first port member communicates with the inside of the second port member, and the first surface of the first flange is The third surface of the second flange is oppositely disposed, the sleeve is axially sleeved outside the first flange and the second flange, the first locking member and the first locking member a sleeve fixedly coupled to press the first sealing member axially between the second surface of the first flange and the first locking member, and abut the first sealing member In the inner annular surface of the sleeve, the second locking member is fixedly coupled to the sleeve, and the second sealing member is axially pressed against the fourth surface of the second flange Between the second locking members, and abutting the second sealing member against the inner annular surface of the sleeve, thereby passing the first port member and the second port member through the sealing member Is sealed from the outside world.
  • the first sealing element between the first locking member and the second surface of the first flange can be further compressed in the axial direction by the internal medium pressure, and / Or the second sealing element between the second locking member and the fourth surface of the second flange can be further compressed axially by internal medium pressure.
  • first locking member and/or the second locking member are fixedly connected to the sleeve by bolts.
  • first locking member and/or the second locking member are lock nuts, and the sleeve is screwed.
  • the first connection end of the first port member includes a first body and the first flange connected to each other
  • the second connection end of the second port member includes an interconnected a second body and the second flange, the sleeve being disposed around the first flange, the first body, the second flange, and the second body in the assembled state
  • the first locking member and the second locking member are fixedly coupled
  • the first locking member has a first outer portion away from the first flange and a first inner side adjacent to the first flange a first outer portion is fixedly coupled to the sleeve
  • the first inner portion is inserted between the first body and the sleeve
  • the second locking member has a distance from the second protrusion a second outer portion of the rim and a second inner portion adjacent to the second flange
  • the second outer portion is fixedly coupled to the sleeve
  • the second inner portion is inserted into the second body and the sleeve Between the tubes.
  • the first locking member includes a first limiting leg extending from the first inner side portion, and the first inner side portion and the second surface of the first flange have The separation distance is used to limit the minimum value of the separation distance.
  • the second locking member includes a second limiting leg extending from the second inner side portion, and the second inner side portion and the fourth surface of the second flange have The separation distance is used to limit the minimum value of the separation distance.
  • the first inner side portion of the first locking member and/or the second surface of the first flange has a sloped surface, and the first sealing element abuts on the inclined surface.
  • the second inner side portion of the second locking member and/or the fourth surface of the second flange have a sloped surface, and the second sealing member abuts on the inclined surface.
  • a sealing connection device comprising: a first port member, a second port member, a first sealing member and a first locking member;
  • the first port member has a first connecting end, and The first connecting end is provided with a first flange, the first flange has a first surface and a second surface spaced apart in the axial direction;
  • the second port member has a second connecting end, the second connection The end has an end surface and an inner annular surface; in the assembled state, the first connecting end is in abutment with the second connecting end, so that the first port member communicates with the inside of the second port member, the first flange
  • the first surface is opposite to the end surface of the second connecting end, the first locking member is fixedly connected with the second port member, and the first sealing member is pressed axially in the Between the second surface of the first flange of the first port member and the first locking member, and abutting the first sealing member against the inner annulus of the second connecting end, such that The first port member and the second port member are sealed
  • the first sealing element between the first locking member and the second surface of the first flange can be further compressed axially by internal medium pressure.
  • first locking member and the second port member are fixedly connected by bolts.
  • the first locking member is a lock nut and is threadedly connected to the second port member.
  • the first connection end of the first port member includes a first body and the first flange connected to each other
  • the second connection end of the second port member includes an interconnected a second body and a fixing portion
  • the fixing portion is disposed around the first flange and the first body, and is fixedly connected with the first locking member
  • the first locking member a first outer portion remote from the first port member and a first inner portion adjacent to the first port member, the first outer portion being fixedly coupled to the fixing portion, the first inner portion being inserted into the Between the first body and the fixing portion.
  • the first locking member includes a limiting leg extending from the second end, and the first locking member is spaced apart from the second surface of the first flange
  • the limit foot is used to limit the minimum value of the separation distance.
  • the first inner portion of the first locking member has a slope, and the first sealing member abuts on the inclined surface.
  • the second surface of the first flange of the first locking member has a slope, and the first sealing element abuts on the inclined surface.
  • the first inner portion of the first locking member has a connecting mechanism fixed to the first sealing member Connecting, the first locking member and the first sealing member form a complete part.
  • the second inner portion of the second locking member has a connecting mechanism fixedly connected with the second sealing member to form the second locking member and the second sealing member A complete part.
  • first locking member and/or the second locking member are spliced by a plurality of detachable sub-assemblies.
  • first sealing element and the second sealing element are soft metal, graphite, polymer or composite filler, or non-metal O-ring, metal O-ring seal or C-ring seal ring.
  • the sealing connection device further comprises an elastic spacer.
  • the first connecting end and the second connecting end are butted by the elastic spacer, so that the first port member and the first port member a second port member internally communicating, the first surface of the first flange being opposite the third surface of the second flange and spaced apart by the resilient spacer, the sleeve being axially Nested outside the elastic spacer, the first flange and the second flange.
  • the elastic spacer is annular or C-shaped, and the elastic spacer is a unitary structure or is composed of a plurality of elastic sub-assemblies.
  • the present application is directed to the sealing connection device of the current high-temperature and high-pressure fluid medium pipe and the container, because the internal medium pressure is increased or the temperature change causes the sealing force to be slack and the leakage occurs, and a sealing connection device is proposed.
  • the load required for the fixed connection is greatly reduced, and the size is reduced, so that the overall size of the entire connector is reduced and the weight is reduced.
  • the sealed joint assembly prevents leakage of the seal under high medium pressure and can be used for sealed connections of high temperature and high pressure lines and/or vessels.
  • Figure 1 is a perspective view showing the structure of an embodiment of a sealed connecting device
  • Figure 2 is a cross-sectional structural view showing an embodiment of the sealing and connecting device of Figure 1;
  • Figure 3 is a perspective view showing another embodiment of the sealed connecting device
  • Figure 4 is a cross-sectional structural view showing an embodiment of the sealing and connecting device of Figure 3;
  • Figure 5 is a cross-sectional structural view showing another embodiment of the sealed connecting device
  • Figure 6 is a cross-sectional structural view of an embodiment of a sealed connection device having a threaded connection
  • Figure 7 is a cross-sectional structural view of another embodiment of a sealed connection device having a threaded connection
  • Figure 8 is a cross-sectional structural view of another embodiment of a sealed connection device having a threaded connection
  • Figure 9 is a cross-sectional structural view showing an embodiment of a sealing and connecting device of a locking member having a limiting leg
  • Figure 10 is a perspective structural view of an embodiment of a locking member having a limit leg
  • Figure 11 is a cross-sectional structural view showing another embodiment of the sealing and connecting device of the locking member having the limiting leg;
  • Figure 12 is a cross-sectional structural view showing another embodiment of the sealing and connecting device of the locking member having the limiting leg;
  • Figure 13 is a cross-sectional structural view showing an embodiment of a sealing and connecting device having a beveled locking member
  • Figure 14 is an enlarged schematic view of the area A in Figure 13;
  • Figure 15 is a perspective structural view of an embodiment of a locking member having a bevel
  • Figure 16 is a cross-sectional structural view showing another embodiment of a sealing and connecting device having a beveled locking member
  • Figure 17 is a cross-sectional structural view showing another embodiment of a sealing and connecting device having a beveled locking member
  • Figure 18 is a cross-sectional structural view of an embodiment of a sealed connection device having a beveled first port member
  • Figure 19 is an enlarged schematic view of a region B in Figure 18;
  • Figure 20 is a cross-sectional structural view showing an embodiment of a sealing and connecting device in which the locking member and the sealing member are an integral part;
  • Figure 21 is an enlarged schematic view of a region C of Figure 20;
  • Figure 22 is a perspective schematic view of an embodiment of a locking member having a subassembly.
  • the present application provides a sealed connection for achieving an external sealed connection and internal fluid communication between devices to be connected, such as between a line and a line, between a line and a container, or between a container and a container.
  • the sealing connection device 10 includes a first port member 100, a second port member 200, a first sealing member 400, and a first locking member 300;
  • the first port member 100 has a first connecting end 102, and a first flange 110 is disposed at the first connecting end 102, the first flange 110 has a first surface 112 and a second surface 114 spaced apart in the axial direction;
  • the second port member 200 has The second connecting end 202 has a second end 202 having an end surface 222 and an inner annular surface 212.
  • the second connection end 202 is used to interface with the first connection end 102.
  • the sealing connecting device 10 is of a detachable structure.
  • the first connecting end 102 is in abutment with the second connecting end 202, so that the first port member 100 communicates with the inside of the second port member 200, and the first surface of the first flange 110
  • the first locking member 300 is fixedly connected to the second port member 200 to press the first sealing member 400 in the axial direction on the first convex portion of the first port member 100.
  • the second surface 114 of the rim 110 is between the first locking member 300 and the first sealing member 400 abuts the inner annular surface 212 of the second connecting end 202 such that the first port member 100 and the second port member 200 It is sealed from the outside by the first sealing member 400.
  • the primary function of the fixed connection between the first locking member 300 and the second port member 100 is no longer to apply sufficient pressure to the first sealing member 400, but only to the pressure of the medium inside the pipe or container, thus, first Locking member 300 and second
  • the load required for the fixed connection between the port members 100 is greatly reduced, and the size is reduced, so that the overall size of the entire sealed joint device 10 is reduced and the weight is reduced.
  • FIG. 2 when the medium pressure inside the connecting device increases, the increased medium pressure acts on the first sealing member 400 through the first port member 100, the second port member 200, and the first locking member 300.
  • the pressure acting on the first sealing member 400 increases as the pressure of the internal medium increases.
  • the sealing connection device 10 can prevent the sealing force from being loosened under the high medium pressure, and can be used for the high temperature and high pressure pipeline and/or Or a sealed connection to the container.
  • the conventional flange connection when the internal medium pressure increases, the pressure acting on the first sealing member 400 is reduced.
  • the first sealing member 400 is subjected to axial pressure to achieve an initial seal.
  • the first locking member 300 has a spacing region with the first flange 110 of the first port member 100 for receiving the first sealing member 400.
  • the first locking member 300 and the first flange 110 are completely spaced apart, and when the pressure of the medium in the connected device increases, the medium pressure passes through the first
  • the second surface 114 of the first flange 110 of the port member 100 acts on the first sealing member 400 such that the sealing force on the first sealing member 400 increases as the pressure of the medium increases, causing the first sealing member 400 to be axially Further compression, thereby preventing stress relaxation on the first sealing member 400 at high medium pressure, forming a self-tightening manner.
  • first locking member 300 and the first flange 110 may not be completely separated by the first sealing member 400, and the first sealing member 400 is accommodated at intervals to achieve sealing. At the same time, a portion of the first locking member 300 is in contact with the surface of the first flange 110 to form a support.
  • the first port member 100 has a first mounting end 106 for mounting on a device to be connected, such as a tubing or container.
  • the first port member 100 can be an integrally formed tubing or ring having a first through bore 104 extending from the first mounting end 106 to the first connecting end 102.
  • the second port member 200 has a second mounting end 206 for mounting on another device to be connected, such as a tubing or container.
  • the second port member 200 can be an integrally formed tube or ring having a second through bore 204 that extends from the second mounting end 206 to the second connecting end 202.
  • the first through hole 104 communicates with the second through hole 204 to bring the fluid medium between the two devices to be connected into communication.
  • the first connecting end 102 and the second connecting end 202 may directly abut and contact, and the end surface 222 of the second connecting end 202 is in contact with the first surface 112 of the first connecting end 102 to form an annular connecting surface, and the connecting surface is close to the first
  • the edges of a through hole 104 and the second through hole 204 are inner side edges, the outer edge is an outer side edge 12, and the outer side edge 12 is annular.
  • the first sealing member 400 is a ring member that is pressed against the inner ring surface 212 by the first locking member 300 and may be fitted to the outer edge 12 to form between the first port member 100 and the second port member 200.
  • the sealing is such that the first through hole 104 and the second through hole 204 are isolated from the outside.
  • the first sealing member 400 is an elastic member that is elastically deformable under pressure.
  • the material of the first sealing member 400 may be selected according to specific working conditions, and may be, for example, soft metal, graphite, polymer or composite material or the like.
  • the first sealing element 400 can be a non-metallic O-ring, a metal O-ring seal or a metal C-ring seal.
  • the first connecting end 102 includes a first body 120 and a first connected to each other.
  • Flange 110 is an annular structure, and the first flange 110 is disposed around the first body 120 and protrudes from the first body 120 toward the side of the first port member 100.
  • the first surface 112 and the second surface 114 are substantially parallel.
  • the second connecting end 202 includes a second body 220 and a fixing portion 210 that are connected to each other, and the fixing portion 210 protrudes from the second body 220 to form a stepped structure.
  • the second body 220 is for connection with the first flange 110.
  • the second body 220 abuts and contacts the first surface 112 of the first flange 110 in an assembled state.
  • the fixing portion 210 is fixedly connected to the first locking member 300.
  • the fixing portion 210 is an annular structure disposed around the second body 220.
  • the fixing portion 210 is disposed around the first flange 110, and the inner diameter of the fixing portion 210 Cooperating with the outer diameter of the first flange 110 enables the first flange 110 to move in the axial direction.
  • the securing portion 210 includes an inner annulus 212 that is in contact with the first sealing element 400.
  • the fixing portion 210 is also disposed around the first body 120 and is disposed at a first distance I from the first body 120 in a radial direction (ie, perpendicular to the extending direction of the first through hole 104).
  • the first locking member 300 can be an integral ring member. In the assembled state, the first locking member 300 is sleeved on the outside of the first port member 100, and is fixedly connected to the second port member 200 through the first locking member 300.
  • the first port member 100 is at a radial upper limit.
  • the first locking member 300 can be inserted between the first body 120 and the fixing portion 210, for example, the insertion portion is substantially equal in size to the first distance I, and is coupled to the first body 120. The size fit between the fixing portions 210.
  • the first locking member 300 and the first port member 100 are relatively movable in the axial direction (ie, the extending direction of the first through hole 104), so that the first port member 100 is raised in internal pressure.
  • the first locking member 300 has a first outer portion 302 away from the first connecting end 102 and a first inner portion 304 adjacent to the first connecting end 102, the first outer portion 302 and the second port member 200
  • the first inner portion 304 is inserted between the first body 120 and the fixed portion 210 by a fixed connection.
  • the first inner side portion 304 may have a size that fits between the first body 120 and the fixed portion 210.
  • the first locking member 300 is axially spaced apart from the first flange 110 by a second distance II.
  • the second distance II is smaller than the size when the first sealing member 400 is uncompressed, so that the first sealing member 400 is in a compressed state.
  • the first locking member 300 and the second port member 200 can be connected by a fixing member 500, such as by screws or bolts.
  • a fixing member 500 such as by screws or bolts.
  • the first inner portion 304 of the first locking member 300 has a through hole for the bolt to pass therethrough
  • the fixing portion 210 of the second port member 200 has a screw hole for connecting with the bolt.
  • a conventional flange connector with a diameter of 45 mm and a medium pressure of 42 MPa has a flange diameter of 205 mm, a total thickness of 120 mm, a fastening bolt M30X4, and a total weight of about 18 kg.
  • the maximum diameter is 115 mm
  • the total thickness is 59 mm
  • the fastening bolt M8X8 is 8
  • the total weight is 3.5 kg.
  • the size is reduced by about half, and the weight is reduced to only 1/5.
  • a sealed connection device 10' including a first port member 100, a second port member 200, a sleeve 600, a first sealing member 400, and a second sealing member.
  • the first locking member 300 has a first connecting end 102, and the first connecting end 102 is provided with a first flange 110.
  • the first flange 110 has a first surface 112 and a second surface 114 spaced apart in the axial direction;
  • the second port member 200 has a second connecting end 202, and the second connecting end 202 is provided with a second flange 210,
  • the second flange 210 has a third surface 212 and a fourth surface 214 that are spaced apart in the axial direction.
  • the second connection end 202 is used to interface with the first connection end 102.
  • the sealing connecting device 10' is a detachable structure.
  • the first connecting end 102 is in abutment with the second connecting end 202, so that the first port member 100 communicates with the inside of the second port member 200, and the first flange 110 is first.
  • the surface 112 is disposed opposite to the third surface 212 of the second flange 210.
  • the sleeve 600 is axially sleeved outside the first flange 110 and the second flange 210.
  • the first locking member 300 and the sleeve The first sealing member 400 is axially pressed between the second surface 114 of the first flange 110 of the first port member 100 and the first locking member 300, and the first sealing member 400 is abutted.
  • the second locking member 340 is fixedly coupled to the sleeve 600, and the second sealing member 410 is axially pressed against the fourth surface 214 of the second flange 210 of the second port member 200.
  • the second sealing member 410 abutting the inner annular surface 602 of the sleeve 600, thereby passing the first port member 100 and the second port member 200 through the first sealing member 400 to the outside Sealed and isolated.
  • the primary function of the fixed connection between the first locking member 300 and the second locking member 340 and the sleeve 600 is no longer to apply sufficient pressure to the first sealing member 400 and the second sealing member 410, but only to the pipeline Or the pressure of the medium inside the container, therefore, the load required for the fixed connection between the first locking member 300 and the second locking member 340 and the sleeve 600 is greatly reduced, and the size becomes smaller, so that the entire sealing connection device 10 'The overall size is reduced and the weight is reduced. As can be seen from FIG.
  • the sealed connection device 10' is capable of preventing loosening of the sealing force under high medium pressure and can be used for sealing connections of high temperature and high pressure pipes and/or vessels. Conventional flange connections reduce the pressure acting on the sealing element as the internal medium pressure increases.
  • the first locking member 300 has a spacing region with the first flange 110 of the first port member 100 for receiving the first sealing member 400. There is a spacing region between the second locking member 340 and the second flange 210 of the second port member 200 for receiving the second sealing member 410. In some embodiments, such as the embodiment of Figures 3 and 4, the first locking member 300 is completely spaced from the first flange 110, and the second locking member 340 and the second flange 210 are completely spaced apart.
  • the medium pressure acts on the first sealing member 400 through the second surface 114 of the first flange 110 of the first port member 100 and through the second projection of the second port member 200.
  • the fourth surface 214 of the rim 210 acts on the second sealing element 410 such that the sealing force on the first sealing element 400 and the second sealing element 410 increases as the pressure of the medium increases, causing the first sealing element 400 and the second seal
  • the element 410 is further compressed in the axial direction to prevent stress relaxation on the first sealing element 400 and the second sealing element 410 under high medium pressure, forming a self-tightening manner.
  • the gap is in communication with the inner first through hole 104 and the second through hole 204, and needs to be sealed to be isolated from the outside. .
  • the first and second first sealing members 400, 410 are annular members that are pressed against the second surface 114 and the fourth surface 214 by the first and second first locking members 300, 340, respectively, and conform to the inner annulus 602 Thereby, a seal is formed between the first port member 100 and the second port member 200 to isolate the first through hole 104 and the second through hole 204 from the outside.
  • the materials of the first and second first sealing members 400, 410 may be selected according to specific working conditions, and may be, for example, soft metal, graphite, polymer or composite materials.
  • the first and second first sealing members 400, 410 may be non-metallic O-rings, metal O-ring seals or metal C-ring seals.
  • the first connecting end 102 includes a first body 120 and a first flange 110 that are connected to each other.
  • the first flange 110 is an annular structure, and the first flange 110 is disposed around the first body 120 and protrudes from the first body 120 toward the side of the first port member 100.
  • the first surface 112 and the second surface 114 are substantially parallel.
  • the second connecting end 202 includes a second body 220 and a second flange 210 that are connected to each other.
  • the second flange 210 is an annular structure, and the second flange 210 is disposed around the second body 220 and protrudes from the second body 220 toward the side of the second port member 200.
  • the third surface 212 and the fourth surface 214 are substantially parallel.
  • the sleeve 600 is an annular structure including an inner annulus 602.
  • the sleeve 600 is axially sleeved outside the first flange 110 and the second flange 120, and the inner diameter of the sleeve 600 matches the outer diameters of the first flange 110 and the second flange 120, so that The first flange 110 and the second flange 120 are movable in the axial direction.
  • the sleeve 600 is for fixed connection with the first locking member 300 and the second locking member 340.
  • the same inner annulus 602 is in contact with both the first and second first sealing elements 400, 410.
  • the sleeve 600 is also sleeved on a portion of the first body 120 and the second body 220, and is disposed at a first distance I from the first body 120 in a radial direction (ie, perpendicular to the extending direction of the first through hole 104).
  • the two bodies 220 are disposed at a first distance I in a radial direction (ie, perpendicular to the direction in which the second through holes 204 extend).
  • the first locking member 300 and the second locking member 340 can respectively be an integral ring member.
  • the first locking member 300 is sleeved outside the first port member 100, and passes through the first locking member 300 and the sleeve.
  • the barrel 600 is fixedly coupled such that the first port member 100 is at the upper radial limit.
  • the second locking member 340 is sleeved on the outside of the second port member 200, and is fixedly connected to the sleeve 600 through the second locking member 340 such that the second port member 200 is at the upper radial limit.
  • first locking member 300 can be inserted between the first body 120 and the sleeve 600, and the second locking member 340 can be inserted between the second body 220 and the sleeve 600.
  • the insertion portions of the first locking member 300 and the second locking member 340 are respectively radially sized to be substantially equal to the first distance I.
  • the first locking member 300 and the first port member 100 are relatively movable in the axial direction (ie, the extending direction of the first through hole 104 and the second through hole 204), so that the first port member 100
  • the pressure applied to the first sealing member 400 increases as the internal pressure increases, and the second locking member 340 and the second port member 200 can move relative to each other such that the second port member 200 faces the second when the internal pressure rises.
  • the pressure exerted by the sealing element 410 is increased.
  • the first locking member 300 has a first outer portion 302 away from the first connecting end 102 and a first inner portion 304 adjacent to the first connecting end 102
  • the second locking member The 340 has a second outer portion 342 that is away from the second connecting end 202 and a second inner portion 344 that is adjacent to the second connecting end 202.
  • the first outer portion 302 and the second outer portion 342 are respectively fixedly coupled to the two ends of the sleeve 600, the first inner portion 304 is inserted between the first body 120 and the sleeve 600, and the second inner portion 344 is inserted into the second body 220 and the sleeve. Between the barrels 600.
  • the first inner side portion 304 can have a size that mates with the first body 120 and the sleeve 600.
  • the second inner side portion 344 can have a size that mates with the second body 220 and the sleeve 600.
  • the first locking member 300 is axially spaced apart from the first flange 110 by a second distance II
  • the second locking member 340 is axially spaced apart from the second flange 210 by a second distance II.
  • the second distance II is smaller than the size when the first and second first sealing elements 400, 410 are not compressed, respectively, so that the first and second first sealing elements 400, 410 are in a compressed state.
  • the first and second first locking members 300, 340 and the sleeve 600 may be connected by the first fixing member 500 and the second fixing member 510, respectively, for example, by screws or bolts.
  • the first outer side portion 302 of the first locking member 300 and the second outer side portion 342 of the second locking member 340 have through holes for the bolts to pass through, and the sleeve 600 has a screw hole for connecting with the bolts. .
  • the sleeve 600 converts the surface connection between the conventional flanges into a body connection manner between the first locking member 300 and the second locking member 340, respectively, which greatly improves the overall sealing connection device 10'. Sexuality enhances torsion, bending and vibration resistance, and is especially suitable for sealing connections in strong vibration environments.
  • a conventional flange connector with a diameter of 45 mm and a medium pressure of 42 MPa has a flange diameter of 205 mm, a total thickness of 120 mm, a fastening bolt M30X4, and a total weight of about 18 kg.
  • the maximum diameter is 115 mm
  • the total thickness is 80 mm
  • the fastening bolt M8X8 is 8 kg
  • the total weight is 4.5 kg.
  • the size is reduced by about half, and the weight is reduced to Only 1/4.
  • the sealing connection device 10" is substantially the same as the above-mentioned sealing connection device 10', except that the elastic spacer 700 is further included, and the second connection end 202 is elastically spaced from the first connection end 102.
  • the piece 700 is docked.
  • the sealing connection device 10" is a detachable structure.
  • the elastic spacer 700 is disposed between the first connecting end 102 and the second connecting end 202, and the first connecting end 102 and the second connecting end 202 pass the elastic spacer 700.
  • the first port member 100 is communicated with the second port member 200, and the sleeve 600 is axially sleeved outside the elastic spacer 700, the first flange 110 and the second flange 210.
  • the forces of the first sealing element 400 and the second sealing element 410 are derived from the self-tightening force generated by the pressure of the medium in the connected device, and the pressure generated by the elastic spacer 700, and the two forces are inversely proportional, ie, when When the medium pressure is increased, since the distance between the first and second port members 100, 200 is increased, the force generated by the elastic spacer 700 is reduced, and vice versa, so the elastic spacer 700 of a suitable elastic modulus is selected.
  • the force acting on the first and second sealing members 400, 410 can be made to become a substantially constant force, thereby improving the sealing reliability of the sealed connecting device 10".
  • the elastic spacer 700 may be specifically disposed between the first surface 112 of the first connection end 102 and the third surface 212 of the second connection end 202.
  • the first surface 112 of the first connection end 102 and the third surface 212 of the second connection end 202 are in contact with the elastic spacer 700, respectively.
  • the elastic spacer 700 has a through hole that communicates with the first through hole 104 and the second through hole 204, respectively. Specifically, it may be a ring member or a C-shaped member.
  • the annular or C-shaped elastic spacer 700 may be a unitary structure or may be formed by splicing a plurality of elastic sub-assemblies.
  • the elastic spacer 700 can be elastically deformed by external force compression, and is disposed between the first connecting end 102 and the second connecting end 202, and has an adjustable and compressible elastic interval when the sealing connecting device 10" is attached and detached.
  • the presence of the member 700 not only makes the sealing connection device 10" easier to install and disassemble, but also reduces the requirement for the fitting accuracy of the various components.
  • the elastic spacers 700 of different thicknesses may be selected according to the distance between the first port member 100 and the second port member 200 at the site, thereby facilitating fine adjustment of the thickness of the elastic spacers 700 or superimposing a plurality of elastic layers.
  • the spacer 700 is adapted to the distance between the first port member 100 and the second port member 200 without adjusting the distance between the first port member 100 and the second port member 200, thereby greatly facilitating on-site installation. And disassembly work.
  • the inner diameter of the sleeve 600 also matches the outer diameter of the elastic spacer 700, and the inner diameter of the elastic spacer 700 is equal to the diameter of the first through hole 104 and the second through hole 204.
  • the first port member 100 and the second port member 200 can be realized by a threaded locking member.
  • the first locking member 300 and/or the second locking member 340 may be a lock nut.
  • the first locking member 300 is inserted between the first body 120 and the fixing portion 210, and the surfaces of the first inner portion 304 and the fixing portion 210 are in contact with each other. Thread 310. It can be understood that in other embodiments, the first locking member 300 can be disposed around the outside of the fixing portion 210 (not shown), and the surface contacting the fixing portion 210 has a matching thread 310. The first locking member 300 connected by the thread 310 is no longer connected to the second port member 200 by the fixing member 500, so that the sealing connecting device 10 has a small size and weight.
  • the first locking member 300 and/or the second locking member 340 and the sleeve 600 can be coupled by threads 310.
  • the first inner portion 304 of the first locking member 300 and/or the second inner portion 344 of the second locking member 340 and the surface of the sleeve 600 that are in contact with each other have mating threads 310.
  • the first one connected by the thread 310 The locking member 300 and/or the second locking member 340 need not be connected to the sleeve 600 by the fixing member 500, so that the sealing connecting devices 10' and 10" have a small size and weight.
  • the temperature and/or pressure of the media within the conduit and/or container may be unstable and constantly changing.
  • the first locking member 300 and/or the second locking member 340 may include a limiting leg 320.
  • the limiting leg 320 of the first locking member 300 protrudes from the first inner portion 304, and the second locking member 340 is limited.
  • the leg 320 extends from the second inner side portion 344.
  • the first sealing member 400 is compressed by the first locking member 300 by an initial elastic deformation to form an initial seal.
  • the limiting legs 320 may be disposed on or spaced apart from the first flange 110, and are determined according to actual working conditions.
  • the limit leg 320 When the limit leg 320 is spaced from the first flange 110 in the initial sealed state after assembly, when the internal medium pressure is increased, the medium pressure acts on the first sealing member 400 through the first flange 110, so that the first The pressure on the sealing member 400 increases while the gap between the limit leg 320 and the second surface 114 of the first flange 110 becomes smaller until it is zero. At this time, even if the medium pressure continues to increase, the deformation of the first sealing member 400 remains substantially unchanged. Due to the presence of the limit legs 320, the maximum amount of deformation of the first sealing element 400 remains substantially fixed, avoiding excessive deformation.
  • the force applied to the first sealing element 400 is substantially constant, avoiding the occurrence of internal pressure increase or frequent drastic changes. Excessive deformation and slack of the first sealing member 400. Since the first sealing member 400 is still compressed by the first locking member 300, even if the axial movement is slightly caused by the gap between the first port member 100 and the second port member 200, the sealing effect is not affected. Compared with the conventional flange connection, the requirement of the deformation resistance rigidity of the fixing member 500 and the entire connecting device 10 under high pressure and ultrahigh pressure conditions is reduced. Therefore, the entire connecting device is small in size and light in weight.
  • the limiting legs 320 of the second locking member 340 also have the same arrangement and function, and will not be described again.
  • the limiting leg 320 of the first locking member 300 limits the minimum distance between the first inner portion 304 of the first locking member 300 and the second surface 114 of the first flange 110, and the second locking member
  • the limit foot 320 of 340 limits the minimum distance of the separation between the second inner portion 344 of the second locking member 340 and the fourth surface 214 of the second flange 210.
  • the first inner portion 304 of the first locking member 300 has a ramp 306 and a plane 308.
  • a first sealing element 400 is provided in the space between the ramp 306 and the first flange 110, such as a non-metallic O-ring, a metal C-ring seal or a metal O-ring seal.
  • the medium pressure acts on the first sealing element 400 through the second surface 114 of the first flange 110 of the first port member 100, sealing the first sealing element 400.
  • the force increases as the pressure of the medium increases, causing the first sealing member 400 to be further compressed in the axial direction, thereby preventing stress relaxation on the first sealing member 400 at high medium pressure, forming a self-tightening manner.
  • the plane 308 and the first flange 110 abut each other in the initial assembled state, the pressure of the first sealing member 400 is substantially unchanged thereafter, and the first seal can be prevented from being caused by an increase in internal pressure or a frequent change.
  • the force on the element 400 changes to avoid slack in the first sealing element 400.
  • the second inner portion 344 of the second locking member 340 can also have a ramp 346 and a flat surface 348 with the second sealing element abutting the ramp 346.
  • the second surface 114 of the first flange 110 has a slope 1142 and a plane 1144.
  • the plane 1144 and the first inner portion 304 of the first locking member 300 may be spaced apart or offset from each other. by.
  • a first sealing element 400 is disposed in the space between the ramp 1142 and the first inner portion 304 of the first locking member 300, such as a non-metallic O-ring, a metal C-ring seal, or a metal O-ring seal.
  • the fourth surface 214 of the second flange 210 may also have a sloped surface and a flat surface in which the second sealing member 410 is disposed in a space between the inclined surface and the second inner side portion 344 of the second locking member 340.
  • FIGS. 13 to 19 can reduce the machining accuracy and assembly difficulty of the parts, the first and second sealing members 400, 410 and the beveled first flange 110, the second flange 210, the first inner portion 304 or The second inner portion 344 is used in combination to obtain a simple, effective and reliable seal.
  • the first locking member 300 is fixedly coupled to the first sealing member 400 to form an integral part, so that the first sealing member 400 and the first locking member 300 can be simultaneously disassembled, thereby increasing assembly convenience.
  • the first inner portion 304 of the first locking member 300 may have a coupling mechanism, such as the mounting groove 330, such that the first sealing member 400 is caught in the mounting groove 330 to be fixedly coupled to the first inner portion 304.
  • the second locking member 340 and the second sealing member 410 can also be fixedly connected in the same manner to form an integral part.
  • the first flange 110 has a slope 1142.
  • the first inner portion 304 of the first locking member 300 and the plane 1144 of the first flange 110 may mutually
  • the first sealing member 400 that is coupled to the first inner portion 304 of the first locking member 300 is spaced apart or abutted by the slope 1142 of the first flange 110.
  • the first sealing element 400 of the sealed connection device 10 is pressed against the inner annulus 212 of the second connection end 202, sealing the first port member 100 and the second port member 200 from the outside through the first sealing member 400. isolation.
  • the first sealing element 400 of the sealing joint 10' or 10" is pressed against the inner annulus 602 of the sleeve 600.
  • the second flange 210 may also have a beveled surface.
  • the first locking member 300 and/or the second locking member 340 are in a block structure, including A plurality of sub-assemblies 360, which can be spliced into the first and second locking members 300, 340 of the complete annular structure in other embodiments.
  • the first locking member and the first locking member are The fixed connection between the second port members, or the primary function of the fixed connection between the first and second locking members and the sleeve, is no longer to apply sufficient pressure to the sealing member, but only to the interior of the pipe or container The medium pressure, therefore, the load on the connector is greatly reduced, and the size is reduced, so that the overall size of the entire connector is reduced and the weight is reduced.
  • the embodiment of the invention completely solves the problem that the traditional flange connection has stress relaxation of the sealing element due to high internal medium pressure, and can realize reliable sealing connection under high pressure and ultra high pressure.
  • the second distance between the inner side portion of the locking member and the flange has a minimum connection mode, which can effectively solve the problem of medium leakage which occurs after the sealing element is excessively compressed due to temperature and pressure changes.
  • the sealed connection device is particularly suitable for use in high pressure, high temperature media, variable temperature, pressure medium pipes and sealed joints between containers, such as aerospace and deep sea.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)

Abstract

L'invention concerne un dispositif de connexion étanche (10), comprenant un premier élément orifice (100), un second élément orifice (200), un premier élément d'étanchéité (400) et un premier élément de verrouillage (300). Le premier élément orifice (100) a une première extrémité de connexion (102), et une première bride (110) est disposée au niveau de la première extrémité de connexion (102), la première bride (110) ayant une première surface (112) et une seconde surface (114) qui sont disposées axialement à un intervalle. Le second élément orifice (200) a une seconde extrémité de connexion (202). Dans un état d'assemblage, la première extrémité de connexion (102) est reliée à la seconde extrémité de connexion (202) pour permettre à l'intérieur du premier élément orifice (100) de communiquer avec l'intérieur du second élément orifice (200) ; le premier élément de verrouillage (300) appuie axialement sur le premier élément d'étanchéité (400) entre la seconde surface (114) de la première bride (110) du premier élément orifice (100) et le premier élément de verrouillage (300), pour isoler le premier élément orifice (100) et le second élément orifice (200) de l'extérieur au moyen du premier élément d'étanchéité (400).
PCT/CN2017/092550 2017-04-19 2017-07-12 Dispositif de connexion étanche Ceased WO2018192108A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201710258285.2 2017-04-19
CN201710258285.2A CN107023724B (zh) 2017-04-19 2017-04-19 密封连接装置
CN201710327590.2 2017-05-10
CN201710327590.2A CN107013773A (zh) 2017-05-10 2017-05-10 密封连接装置
CN201710403648.7A CN107143708A (zh) 2017-06-01 2017-06-01 密封连接装置
CN201710403648.7 2017-06-01

Publications (1)

Publication Number Publication Date
WO2018192108A1 true WO2018192108A1 (fr) 2018-10-25

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ID=63856951

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Application Number Title Priority Date Filing Date
PCT/CN2017/092550 Ceased WO2018192108A1 (fr) 2017-04-19 2017-07-12 Dispositif de connexion étanche

Country Status (1)

Country Link
WO (1) WO2018192108A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202708397U (zh) * 2012-08-14 2013-01-30 南车二七车辆有限公司 一种铁路货车制动管系法兰接头连接结构
US20140239633A1 (en) * 2013-02-28 2014-08-28 Spears Manufacturing Co. Cut-in fitting for connecting pipe
US20160245440A1 (en) * 2015-02-20 2016-08-25 Caterpillar Inc. Tube Seal Assembly
CN107013773A (zh) * 2017-05-10 2017-08-04 宁波天生密封件有限公司 密封连接装置
CN107023724A (zh) * 2017-04-19 2017-08-08 宁波天生密封件有限公司 密封连接装置
CN107143708A (zh) * 2017-06-01 2017-09-08 宁波天生密封件有限公司 密封连接装置
CN206656054U (zh) * 2017-04-19 2017-11-21 宁波天生密封件有限公司 密封连接装置
CN206770832U (zh) * 2017-05-10 2017-12-19 宁波天生密封件有限公司 密封连接装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202708397U (zh) * 2012-08-14 2013-01-30 南车二七车辆有限公司 一种铁路货车制动管系法兰接头连接结构
US20140239633A1 (en) * 2013-02-28 2014-08-28 Spears Manufacturing Co. Cut-in fitting for connecting pipe
US20160245440A1 (en) * 2015-02-20 2016-08-25 Caterpillar Inc. Tube Seal Assembly
CN107023724A (zh) * 2017-04-19 2017-08-08 宁波天生密封件有限公司 密封连接装置
CN206656054U (zh) * 2017-04-19 2017-11-21 宁波天生密封件有限公司 密封连接装置
CN107013773A (zh) * 2017-05-10 2017-08-04 宁波天生密封件有限公司 密封连接装置
CN206770832U (zh) * 2017-05-10 2017-12-19 宁波天生密封件有限公司 密封连接装置
CN107143708A (zh) * 2017-06-01 2017-09-08 宁波天生密封件有限公司 密封连接装置

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