CN118309823B - Mechanical emergency cutting and discharging system - Google Patents
Mechanical emergency cutting and discharging system Download PDFInfo
- Publication number
- CN118309823B CN118309823B CN202410743566.7A CN202410743566A CN118309823B CN 118309823 B CN118309823 B CN 118309823B CN 202410743566 A CN202410743566 A CN 202410743566A CN 118309823 B CN118309823 B CN 118309823B
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- locking
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- 238000007599 discharging Methods 0.000 title abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 78
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 238000013022 venting Methods 0.000 claims description 2
- 230000000740 bleeding effect Effects 0.000 claims 2
- 238000004146 energy storage Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- 239000003345 natural gas Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a mechanical emergency cutting-off and discharging system, which comprises a main valve and a control mechanism arranged on the main valve; the control mechanism comprises a control box, a trigger mechanism, a force storage mechanism and a driving mechanism, wherein the trigger mechanism, the force storage mechanism and the driving mechanism are arranged on the inner wall of the control box; the triggering mechanism comprises a pressure sensing component, a first transmission component and a locking component; the input end and the output end of the first transmission part are respectively connected to the power end of the pressure sensing part and the locking part, and are used for transmitting the power of the pressure sensing part to the locking part to enable the locking part to act; the output end of the force storage mechanism and the locking part are oppositely arranged to form a locking relation; the driving mechanism comprises a driving shaft and a second transmission part; the input end and the output end of the second transmission part are respectively connected to the output end of the force storage mechanism and the input end of the driving shaft, and the output end of the driving shaft is connected to the driving end of the main valve; the invention is designed for purely mechanical triggering, does not depend on external sensing, external force energy storage and other energy sources, and greatly ensures the effectiveness and safety of the system.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a mechanical emergency cutting-off and discharging system.
Background
In order to avoid the influence of the too high or too low air pressure on related natural gas equipment, the emergency cut-off valve is arranged on the natural gas wellhead gas pipe, and the emergency cut-off valve is closed when the air pressure is too high or too low, so that natural gas delivery is stopped, and high-pressure and low-pressure protection of the natural gas is realized, wherein the high-pressure protection can effectively prevent accidents such as natural gas leakage and the like caused by bursting of a downstream pipeline, and the low-pressure protection can effectively protect the gas well from being blocked by water caused by insufficient pressure.
The existing emergency cutting device mostly adopts a remote control mode, and comprises an emergency cutting valve, a pneumatic actuator, a quick release valve, an electromagnetic valve, a pressure regulating valve, a filter, an air compressor, a pressure transmitter and a controller, wherein a compressed air outlet of the air compressor is sequentially connected with a filter, the pressure regulating valve, the electromagnetic valve, the quick release valve and a cylinder inlet of the pneumatic actuator, and the controller generally adopts a PLC (programmable logic controller); the pressure transmitter, namely a pressure sensor, is arranged on a natural gas wellhead gas pipe and is used for detecting wellhead natural gas pressure and transmitting signals to the controller; when the natural gas pressure of the wellhead is normal, the controller controls the electromagnetic valve to be in an open state, the pneumatic actuator inputs compressed air, and the emergency cut-off valve is driven to be in an open state; when the wellhead natural gas pressure is too high or too low, the controller controls the electromagnetic valve to be in a disconnection state, the pneumatic actuator does not input compressed air, and the emergency cut-off valve is driven to be in a disconnection state, so that the safety protection purpose is achieved. In the actual use process, when a communication cable between the controller and the pressure transmitter or the electromagnetic valve is damaged or a transmission signal is interfered, the electromagnetic valve can be delayed or malfunctioned in control, and finally, the emergency cut-off valve is not timely opened and closed, so that the overall safety and accuracy are poor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a mechanical emergency cutting and discharging system, and solves the technical problems of time delay or failure of the existing emergency cutting device adopting a remote control mode by adopting a pure mechanical design.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
The invention provides a mechanical emergency cutting-off and discharging system, which comprises a main valve and a control mechanism arranged on the main valve; the control mechanism comprises a control box, a trigger mechanism, a force storage mechanism and a driving mechanism, wherein the trigger mechanism, the force storage mechanism and the driving mechanism are arranged on the inner wall of the control box; the triggering mechanism comprises a pressure sensing component, a first transmission component and a locking component; the input end and the output end of the first transmission part are respectively connected to the power end of the pressure sensing part and the locking part, and are used for transmitting the power of the pressure sensing part to the locking part to enable the locking part to act; the output end of the force storage mechanism and the locking part are oppositely arranged to form a locking relation; the driving mechanism comprises a driving shaft and a second transmission part; the input end and the output end of the second transmission part are respectively connected to the output end of the force storage mechanism and the input end of the driving shaft, and the output end of the driving shaft is connected to the driving end of the main valve.
Optionally, the pressure sensing component comprises a first mounting plate and a second mounting plate which are arranged on the inner wall of the control box at intervals; a pressure-bearing cavity is formed in one side, far away from the second mounting plate, of the first mounting plate, a piston piece is arranged in the pressure-bearing cavity, a piston rod is arranged on one side, close to the first mounting plate, of the piston piece, and a guide opening is formed in one side, far away from the first mounting plate, of the pressure-bearing cavity; the second mounting plate is embedded with a shaft sleeve, the shaft sleeve is embedded with a transmission shaft, one end of the transmission shaft, which is close to the first mounting plate, is provided with a protruding part, and a first spring piece is sleeved on the transmission shaft between the protruding part and the shaft sleeve; the piston rod passes through the first mounting plate along the pressure-bearing cavity and is connected to one end, close to the first mounting plate, of the transmission shaft.
Optionally, the first transmission part comprises a first rack, one end of the first rack is provided with a connecting rod, the connecting rod is connected to the power end of the pressure sensing part, two sides of the other end of the first rack are symmetrically provided with a first rotating shaft, a second rotating shaft is arranged below the first rack, a first gear and a second gear are sleeved on the first rotating shaft, and a third gear and a fourth gear are sleeved on the second rotating shaft; the first gear is in meshed connection with the first rack, and the second gear is in meshed connection with the third gear; the first rotating shaft and the second rotating shaft are arranged on the inner wall of the control box through bearings; wherein the second gear is a half gear.
Optionally, the first transmission part further includes a first sliding rail disposed on an inner wall of the control box, the first sliding rail is located above the first rack, two first sliding blocks are disposed on the first sliding rail at intervals, and the two first sliding blocks are respectively fixedly connected with two ends of the first rack.
Optionally, the locking component comprises a third mounting plate and a fourth mounting plate which are arranged on the inner wall of the control box at intervals; a second rack is arranged between the third mounting plate and the fourth mounting plate, two ends of the second rack are respectively provided with a first guide rod and a second guide rod, the first guide rod and the second guide rod respectively penetrate through the third mounting plate and the fourth mounting plate, and one end, far away from the fourth mounting plate, of the second guide rod is provided with a locking head; a second spring piece is sleeved on the second guide rod between the locking head and the fourth mounting plate; the second rack is meshed with the output end of the first transmission part.
Optionally, the locking part further comprises a fifth mounting plate arranged on the inner wall of the control box, a second sliding rail is arranged on the fifth mounting plate, a second sliding block is arranged on the second sliding rail, and the second sliding block is fixedly connected with the locking head.
Optionally, a handle is disposed at one end of the first guide rod away from the third mounting plate.
Optionally, a roller is disposed on one side of the locking head, which is close to the force storage mechanism.
Optionally, the force storage mechanism comprises a sixth mounting plate, a seventh mounting plate and a third sliding rail which are arranged on the inner wall of the control box at intervals, a cylinder is connected between the sixth mounting plate and the seventh mounting plate, a third spring piece and a sliding piece are embedded in the cylinder, and the third spring piece is positioned between the sliding piece and the seventh mounting plate; a spline housing is arranged on one side, far away from the seventh mounting plate, of the sixth mounting plate, a spline shaft is arranged in the spline housing, one end of the spline shaft penetrates through the seventh mounting plate and is connected to the sliding part along the cylinder, and a tail housing is arranged at the other end of the spline shaft; two third sliding blocks are arranged on the third sliding rail at intervals, and a third rack is connected between the two third sliding blocks; the bottom of the cylinder body is provided with a strip-shaped groove, and the third sliding block which is close to the sixth mounting plate penetrates through the strip-shaped groove to be fixedly connected with the sliding piece.
Optionally, the second transmission part includes through the bearing set up in the third pivot of control box inner wall, the cover is equipped with fifth gear and sixth gear on the third pivot, fifth gear with the output meshing of power storage mechanism is connected, sixth gear with the seventh gear meshing that sets up on the drive shaft is connected.
Compared with the prior art, the invention has the beneficial effects that:
The mechanical emergency cutting-off and discharging system provided by the invention adopts a pure mechanical triggering design, does not depend on external sensing, external force energy storage and other energy sources, and greatly ensures the effectiveness and safety of the system; meanwhile, through the half-tooth design of the second gear, the closing or opening of the main valve can be effectively controlled when the pressure range is lower than or higher than the set pressure range, and the flexibility and the adaptability are higher.
Drawings
FIG. 1 is a schematic illustration of a mechanical emergency shutdown and vent system provided in accordance with an embodiment of the invention;
FIG. 2 is a schematic diagram of the overall structure of a control mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of the manner in which a main valve and control mechanism are secured provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a pressure-sensitive member according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a pressure sensing component according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a first transmission member according to an embodiment of the present invention;
FIG. 7 is a schematic perspective view of a control mechanism according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a force storing mechanism according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of the operation of the second gear and the third gear under the undervoltage condition provided by the embodiment of the invention;
FIG. 10 is a schematic diagram of the operation of the second gear and the third gear under overpressure conditions provided by an embodiment of the present invention;
Marked in the figure as:
1-a main valve; 11-mounting a bracket;
2-a control mechanism;
3-a control box;
4-a trigger mechanism; 41-a pressure-sensitive member; 411-a first mounting plate; 412-a second mounting plate; 413-a pressure-bearing chamber; 414-a piston member; 415-piston rod; 416-pilot; 417-sleeve; 418-a drive shaft; 419-bosses; 420-a first spring member; 42-a first transmission member; 421—a first rack; 422-a connecting rod; 423-a first slide rail; 424-first slider; 425-a first spindle; 426-a second spindle; 427-first gear; 428-a second gear; 429-a third gear; 430-fourth gear; 43-locking means; 431-a third mounting plate; 432-a fourth mounting plate; 433-a second rack; 434-a first guide bar; 435-locking head; 436-a second slide rail; 437-a second slider; 438-handle; 439-a roller;
5-a force storage mechanism; 501-a sixth mounting plate; 502-a seventh mounting plate; 503-a third slide rail; 504-a cylinder; 505-a third spring member; 506-slide; 507-spline housing; 508-spline shaft; 509-a tail sleeve; 510-a third slider; 511-a third rack; 512-bar grooves;
6-a driving mechanism; 61-drive shaft; 62-a second transmission member; 621-a third spindle; 622-fifth gear; 623-sixth gear; 624-seventh gear.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Embodiment one:
As shown in fig. 1 and 2, the present invention provides a mechanical emergency shut-off and venting system comprising a main valve 1 and a control mechanism 2 provided on the main valve 1; the control mechanism 2 comprises a control box 3, a trigger mechanism 4, a force storage mechanism 5 and a driving mechanism 6, wherein the trigger mechanism 4, the force storage mechanism 5 and the driving mechanism 6 are arranged on the inner wall of the control box 3; the trigger mechanism 4 includes a pressure-sensitive member 41, a first transmission member 42, and a lock member 43; the input end and the output end of the first transmission part 42 are respectively connected to the power end of the pressure sensing part 41 and the locking part 43, and are used for transmitting the power of the pressure sensing part 41 to the locking part 43 to enable the power to act; the output end of the force storage mechanism 5 is arranged opposite to the locking part 43 to form a locking relation; the drive mechanism 6 includes a drive shaft 61 and a second transmission member 62; the input and output of the second transmission member 62 are connected to the output of the force storage mechanism 5 and the input of the drive shaft 61, respectively, the output of the drive shaft 61 being connected to the drive end of the main valve 1.
As shown in fig. 3, in the present embodiment, the main valve 1 and the control mechanism 2 may be fixed by providing a mounting bracket 11 on the top of the main valve 1, fixing the control box 3 on the top of the mounting bracket 11, and the driving shaft 61 may smoothly pass through the mounting bracket 11 and enter the main valve 1 to be connected to the driving end of the main valve 1. In other embodiments, other fixing means may be selected, and the driving shaft 61 can be connected to the driving end of the main valve 1 while fixing is only required.
As shown in fig. 4, in the present embodiment in particular, the pressure-sensitive member 41 includes a first mounting plate 411 and a second mounting plate 412 provided at intervals on the inner wall of the control box 3; a pressure-bearing cavity 413 is arranged on one side of the first mounting plate 411 away from the second mounting plate 412, a piston member 414 is arranged in the pressure-bearing cavity 413, a piston rod 415 is arranged on one side of the piston member 414 close to the first mounting plate 411, and a guide opening 416 is arranged on one side of the pressure-bearing cavity 413 away from the first mounting plate 411; a shaft sleeve 417 is embedded on the second mounting plate 412, a transmission shaft 418 is embedded in the shaft sleeve 417, a boss 419 is arranged at one end of the transmission shaft 418 close to the first mounting plate 411, and a first spring member 420 is sleeved on the transmission shaft 418 between the boss 419 and the shaft sleeve 417; piston rod 415 is coupled along pressure chamber 413 through first mounting plate 411 to an end of drive shaft 418 adjacent first mounting plate 411.
In order to ensure the stability of the connection between the plunger rod 415 and the driving shaft 418, a slot may be formed at the end of the driving shaft 418, so that the end of the plunger rod 415 can enter the driving shaft 418 along the slot; a limiting part is arranged at the end part of the piston rod 415, and the limiting part can limit the depth of the piston rod 415 entering the transmission shaft 418 and can be fixed with the boss 419 through a fastener.
In this embodiment, the pilot port 416 is connected to the air intake pipe of the main valve 1 by a pipe, so that the air in the air intake pipe can enter the pilot port 416 at the same time, thereby pushing the piston member 414, and the piston member 414 pushes the transmission shaft 418 to move by the piston rod 415. The first spring member 420 is used for return of the drive shaft 418.
As shown in fig. 5 and 6, in the present embodiment, specifically, the first transmission member 42 includes a first rack 421, one end of the first rack 421 is provided with a connecting rod 422, the connecting rod 422 is connected to the power end of the pressure sensing member 41, two sides of the other end of the first rack 421 are symmetrically provided with a first rotating shaft 425, a second rotating shaft 426 is provided below the first rack 421, a first gear 427 and a second gear 428 are sleeved on the first rotating shaft 425, and a third gear 429 and a fourth gear 430 are sleeved on the second rotating shaft 426; the first gear 427 is in meshed connection with the first rack 421, and the second gear 428 is in meshed connection with the third gear 429; the first rotation shaft 425 and the second rotation shaft 426 are both disposed on the inner wall of the control box 3 through bearings.
In this embodiment, the power end of the pressure sensing component 41 is a boss 419, the boss 419 is driven by the transmission shaft 418 to move, so that the first rack 421 is driven by the connecting rod 422 to move, in order to ensure smooth and steady movement of the first rack 421, the first transmission component 42 further includes a first sliding rail 423 disposed on the inner wall of the control box 3, the first sliding rail 423 is located above the first rack 421, two first sliding blocks 424 are disposed on the first sliding rail 423 at intervals, and the two first sliding blocks 424 are fixedly connected with two ends of the first rack 421 respectively; the first rack 421 moves to push the first gear 427 to rotate, the first gear 427 drives the second gear 428 to rotate through the first rotating shaft 425, the second gear 428 drives the third gear 429 to rotate, and the third gear 429 drives the fourth gear 430 to rotate through the second rotating shaft 426.
Since there are two second gears 428, the two second gears 428 rotate in opposite directions, and if they act on the third gear 429 at the same time, they cannot work normally, and therefore, both the second gears 428 are half gears. Through the design of two half gears, the two half gears respectively act on under-voltage working conditions and overpressure working conditions. In particular, in the present embodiment, the second gears 428 on both sides are rotationally symmetrically disposed along the center of the third gear 429, and in the initial state, the second gear 428 on one side is in a state to be engaged with the third gear 429, and the second gear 428 on the other side is in a state to be disengaged from the third gear 429. By the cooperative arrangement of the second gear 428 and the third gear 429, the first transmission member 42 converts the bidirectional movement of the pressure-sensitive member 41 into unidirectional movement and transmits to the locking member 43.
As shown in fig. 7, in the present embodiment in particular, the lock member 43 includes a third mounting plate 431 and a fourth mounting plate 432 provided at intervals on the inner wall of the control box 3; a second rack 433 is arranged between the third mounting plate 431 and the fourth mounting plate 432, a first guide rod 434 and a second guide rod are respectively arranged at two ends of the second rack 433, the first guide rod 434 and the second guide rod respectively penetrate through the third mounting plate 431 and the fourth mounting plate 432, and a locking head 435 is arranged at one end, far away from the fourth mounting plate 432, of the second guide rod; a second spring member is sleeved on a second guide rod between the locking head 435 and the fourth mounting plate 432; the second rack 433 is in meshed connection with the output end of the first transmission member 42.
In this embodiment, the output end of the first transmission component 42 is a fourth gear 430, the fourth gear 430 rotates to drive the second rack 433 to move, and the second rack 433 drives the locking head 435 through the second guide rod, so as to realize locking and unlocking of the output end of the force storage mechanism 5; in order to ensure smooth movement of the locking head 435, the locking member 43 further includes a fifth mounting plate disposed on the inner wall of the control box 3, and a second slide rail 436 is disposed on the fifth mounting plate, and a second slider 437 is disposed on the second slide rail 436, where the second slider 437 is fixedly connected with the locking head 435. The second spring member is used for the return of the second rack 433.
Further, a handle 438 is disposed at an end of the first guide bar 434 remote from the third mounting plate 431, and the locking head 435 can be manually operated by the handle 438, so as to lock and unlock the output end of the force storage mechanism 5. The locking head 435 is provided with the gyro wheel 439 near power storage mechanism 5 one side, through gyro wheel 439 with the sliding friction between locking head 435 and the output of power storage mechanism 5 change into rolling friction, reduce friction loss, improve the smoothness nature of action.
As shown in fig. 8, in the present embodiment, the force storage mechanism 5 includes a sixth mounting plate 501, a seventh mounting plate 502, and a third sliding rail 503 that are disposed on the inner wall of the control box 3 at intervals, a cylinder 504 is connected between the sixth mounting plate 501 and the seventh mounting plate 502, a third spring member 505 and a sliding member 506 are embedded in the cylinder 504, and the third spring member 505 is located between the sliding member 506 and the seventh mounting plate 502; a spline housing 507 is arranged on one side of the sixth mounting plate 501 far away from the seventh mounting plate 502, a spline shaft 508 is arranged in the spline housing 507, one end of the spline shaft 508 penetrates through the seventh mounting plate 502 and is connected to the sliding piece 506 along the cylinder 504, and a tail housing 509 is arranged on the other end of the spline shaft 508; two third sliding blocks 510 are arranged on the third sliding rail 503 at intervals, and a third rack 511 is connected between the two third sliding blocks 510; the bottom of the cylinder 504 is provided with a bar-shaped groove 512, and the third slider 510 near the sixth mounting plate 501 is fixedly connected with the slider 506 through the bar-shaped groove 512.
In this embodiment, the tail sleeve 509 may be turned by a handle or other tool, and the tail sleeve 509 pushes the sliding member 506 to move through the combination of the spline sleeve 507 and the spline shaft 508, so that the sliding member 506 drives the third rack 511 to move and simultaneously compresses the third spring member 505, thereby realizing force storage. The output end of the force storage mechanism 5 is a third sliding block 510 and a third rack 511, the third sliding block 510 and the locking head 435 form a locking relationship, and the third rack 511 drives the second transmission part 62 to act.
As shown in fig. 7, in the present embodiment, the second transmission member 62 includes a third rotating shaft 621 disposed on the inner wall of the control box 3 through a bearing, a fifth gear 622 and a sixth gear 623 are sleeved on the third rotating shaft 621, the fifth gear 622 is engaged with the output end of the force storage mechanism 5, and the sixth gear 623 is engaged with a seventh gear 624 disposed on the drive shaft 61.
In the present embodiment, the third rack 511 moves to drive the fifth gear 622 to rotate, the fifth gear 622 drives the sixth gear 623 through the third rotating shaft 621, the sixth gear 623 drives the seventh gear 624 to rotate, and the seventh gear 624 drives the main valve 1 to operate through the driving shaft 61.
The working principle of the embodiment is as follows:
In the initial state, the force storage mechanism 5 is operated, and the force storage is compressed by the third spring member 505; the pilot port 416 is connected to the conduit, and under the action of the medium pressure in the conduit, the trigger mechanism 4 is actuated, and the drive shaft 61 is disabled by the locking relationship of the third slider 510 with the locking head 435, at which time the main valve 1 is locked in an open or closed state as required.
Under normal working conditions, the pressure sensing component 41 senses that the medium pressure is in a normal working range, the first spring piece 420 is in a balanced state, the pressure sensing component 41 does not act, the first transmission component 42, the locking component 43, the force storage mechanism 5 and the driving mechanism 6 do not act, and the main valve 1 keeps an initial state. The relationship of the two second gears 428 and third gears 429 at this time is shown by the normal pressure in fig. 9 and 10. In the present embodiment, for convenience of illustration, the two second gears 428 are rotationally symmetrical along the third gear 429.
Under the undervoltage working condition, the pressure sensing component 41 senses that the medium pressure is lower than the normal working range, the first spring piece 420 is in an unbalanced state, the first spring piece 420 pushes the piston rod 415 to act, the piston rod is finally transmitted to the second gear 428 through a series of transmission, according to the half-tooth design of the second gear 428, as shown in fig. 9, only the second gear 428 on the left side drives the third gear 429 to rotate anticlockwise, the third gear 429 drives the subsequent locking component 43 to act, the output end of the force storage mechanism 5 is released, and power provided by the force storage mechanism 5 is transmitted to the main valve 1 through the driving shaft 61, so that the main valve 1 is controlled to be opened or closed.
Under the overpressure working condition, the pressure sensing component 41 senses that the medium pressure is higher than the normal working range, the first spring piece 420 is in an unbalanced state, the piston rod 415 pushes the first spring piece 420 to act, and finally the second gear 428 is reached through a series of transmission, according to the half-tooth design of the second gear 428, as shown in fig. 10, only the second gear 428 on the right side drives the third gear 429 to rotate anticlockwise, the third gear 429 drives the subsequent locking component 43 to act, the output end of the force storage mechanism 5 is released, and power provided by the force storage mechanism 5 is transmitted to the main valve 1 through the driving shaft 61, so that the main valve 1 is controlled to be opened or closed.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (7)
1. A mechanical emergency shut-off and venting system comprising a main valve and a control mechanism disposed on the main valve; the control mechanism comprises a control box, a trigger mechanism, a force storage mechanism and a driving mechanism, wherein the trigger mechanism, the force storage mechanism and the driving mechanism are arranged on the inner wall of the control box; the triggering mechanism comprises a pressure sensing component, a first transmission component and a locking component; the input end and the output end of the first transmission part are respectively connected to the power end of the pressure sensing part and the locking part, and are used for transmitting the power of the pressure sensing part to the locking part to enable the locking part to act; the output end of the force storage mechanism and the locking part are oppositely arranged to form a locking relation; the driving mechanism comprises a driving shaft and a second transmission part; the input end and the output end of the second transmission part are respectively connected to the output end of the force storage mechanism and the input end of the driving shaft, and the output end of the driving shaft is connected to the driving end of the main valve;
The pressure sensing component comprises a first mounting plate and a second mounting plate which are arranged on the inner wall of the control box at intervals; a pressure-bearing cavity is formed in one side, far away from the second mounting plate, of the first mounting plate, a piston piece is arranged in the pressure-bearing cavity, a piston rod is arranged on one side, close to the first mounting plate, of the piston piece, and a guide opening is formed in one side, far away from the first mounting plate, of the pressure-bearing cavity; the second mounting plate is embedded with a shaft sleeve, the shaft sleeve is embedded with a transmission shaft, one end of the transmission shaft, which is close to the first mounting plate, is provided with a protruding part, and a first spring piece is sleeved on the transmission shaft between the protruding part and the shaft sleeve; the piston rod passes through the first mounting plate along the pressure-bearing cavity and is connected to one end, close to the first mounting plate, of the transmission shaft;
the first transmission part comprises a first rack, one end of the first rack is provided with a connecting rod, the connecting rod is connected to the power end of the pressure sensing part, two sides of the other end of the first rack are symmetrically provided with a first rotating shaft, a second rotating shaft is arranged below the first rack, a first gear and a second gear are sleeved on the first rotating shaft, and a third gear and a fourth gear are sleeved on the second rotating shaft; the first gear is in meshed connection with the first rack, and the second gear is in meshed connection with the third gear; the first rotating shaft and the second rotating shaft are arranged on the inner wall of the control box through bearings; wherein the second gear is a half gear;
The locking part comprises a third mounting plate and a fourth mounting plate which are arranged on the inner wall of the control box at intervals; a second rack is arranged between the third mounting plate and the fourth mounting plate, two ends of the second rack are respectively provided with a first guide rod and a second guide rod, the first guide rod and the second guide rod respectively penetrate through the third mounting plate and the fourth mounting plate, and one end, far away from the fourth mounting plate, of the second guide rod is provided with a locking head; a second spring piece is sleeved on the second guide rod between the locking head and the fourth mounting plate; the second rack is meshed with the output end of the first transmission part.
2. The mechanical emergency cutting and bleeding system of claim 1, wherein the first transmission member further comprises a first slide rail disposed on an inner wall of the control box, the first slide rail is located above the first rack, two first sliding blocks are disposed on the first slide rail at intervals, and the two first sliding blocks are fixedly connected with two ends of the first rack respectively.
3. The mechanical emergency shutdown and bleeder system according to claim 1, wherein the locking means further comprises a fifth mounting plate provided on an inner wall of the control box, the fifth mounting plate being provided with a second slide rail, the second slide rail being provided with a second slide block, the second slide block being fixedly connected with the locking head.
4. The mechanical emergency shutdown and vent system of claim 1, wherein the first guide rod is provided with a pull tab at an end remote from the third mounting plate.
5. The mechanical emergency shutdown and vent system of claim 1, wherein the locking head is provided with a roller on a side of the locking head adjacent the force storage mechanism.
6. The mechanical emergency shutdown and bleeder system according to claim 1, wherein the force storage mechanism comprises a sixth mounting plate, a seventh mounting plate and a third sliding rail which are arranged on the inner wall of the control box at intervals, a cylinder is connected between the sixth mounting plate and the seventh mounting plate, a third spring member and a sliding member are embedded in the cylinder, and the third spring member is positioned between the sliding member and the seventh mounting plate; a spline housing is arranged on one side, far away from the seventh mounting plate, of the sixth mounting plate, a spline shaft is arranged in the spline housing, one end of the spline shaft penetrates through the seventh mounting plate and is connected to the sliding part along the cylinder, and a tail housing is arranged at the other end of the spline shaft; two third sliding blocks are arranged on the third sliding rail at intervals, and a third rack is connected between the two third sliding blocks; the bottom of the cylinder body is provided with a strip-shaped groove, and the third sliding block which is close to the sixth mounting plate penetrates through the strip-shaped groove to be fixedly connected with the sliding piece.
7. The mechanical emergency cutting and bleeding system of claim 1, wherein the second transmission member includes a third shaft disposed on the inner wall of the control box through a bearing, a fifth gear and a sixth gear are sleeved on the third shaft, the fifth gear is engaged with the output end of the force storage mechanism, and the sixth gear is engaged with a seventh gear disposed on the driving shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410743566.7A CN118309823B (en) | 2024-06-11 | 2024-06-11 | Mechanical emergency cutting and discharging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410743566.7A CN118309823B (en) | 2024-06-11 | 2024-06-11 | Mechanical emergency cutting and discharging system |
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| CN118309823A CN118309823A (en) | 2024-07-09 |
| CN118309823B true CN118309823B (en) | 2024-10-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112610734A (en) * | 2020-12-08 | 2021-04-06 | 嘉兴久珥科技有限公司 | High-rise water supply of wisdom city is with steady voltage flat overflow valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9086163B2 (en) * | 2010-04-27 | 2015-07-21 | Dresser, Inc. | Controlling fluid flow |
| DE102014222731B4 (en) * | 2014-11-06 | 2020-10-08 | Robert Bosch Gmbh | Protective device and hot water device |
| CN110871627B (en) * | 2018-08-31 | 2022-04-15 | 鸿富锦精密工业（深圳）有限公司 | Check valve, continuous ink supply system and printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112610734A (en) * | 2020-12-08 | 2021-04-06 | 嘉兴久珥科技有限公司 | High-rise water supply of wisdom city is with steady voltage flat overflow valve |
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