CN114811211A - Inner extension pipe assembly of vertical reactor and installation method thereof - Google Patents
Inner extension pipe assembly of vertical reactor and installation method thereof Download PDFInfo
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- CN114811211A CN114811211A CN202210507247.7A CN202210507247A CN114811211A CN 114811211 A CN114811211 A CN 114811211A CN 202210507247 A CN202210507247 A CN 202210507247A CN 114811211 A CN114811211 A CN 114811211A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000009434 installation Methods 0.000 title abstract description 4
- 238000003825 pressing Methods 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
- F16L15/002—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with more than one threaded section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0061—Specially shaped nuts or heads of bolts or screws for rotations by a tool with grooves, notches or splines on the external peripheral surface designed for tools engaging in radial direction
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/06—Screw-threaded joints; Forms of screw-threads for such joints characterised by the shape of the screw-thread
-
- 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
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/08—Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
-
- 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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to the technical field of chemical equipment manufacturing, in particular to an inner extension pipe component of a vertical reactor and an installation method thereof, which comprises a plurality of pipe units, the connecting rings are coaxially arranged on two end faces of each pipe unit, the inner diameters of the connecting rings are equal to the inner diameters of the pipe units, the outer diameters of the connecting rings are smaller than the outer diameters of the pipe units, external threads are arranged on the outer circumferential faces of the connecting rings, the rotating directions of the threads at two ends of each pipe unit are opposite, internal threads are coaxially arranged at two ends of the inner circumferential face of each threaded connector, the rotating directions of the internal threads at two ends of each threaded connector are opposite, the internal threads on the threaded connectors are matched with the external threads on the pipe units, the outer diameters of the threaded connectors are equal to the outer diameters of the pipe units, and the problem that the whole inner extension pipe is difficult to insert and pull in a vertical reactor due to limited space at present is solved.
Description
Technical Field
The invention belongs to the technical field of chemical equipment manufacturing, and particularly relates to an inner extension pipe assembly of a vertical reactor and an installation method thereof.
Background
With the large-scale of chemical equipment, a plurality of large-scale vertical reactors are appeared. Some of these devices are up to 30 meters in height. Due to the process requirements, these reactors require internal tubes inserted from the top into the bottom of the reactor for level, temperature, etc. measurements. Due to the need for repair and maintenance, these inner extension tubes need to be designed as pluggable structures and are convenient to operate. The traditional design method is to adopt integral or tailor welding, take the inner extension pipe as a whole and realize detachability through the connection of the flange cover. For a shorter internal extension tube, the assembly and disassembly are easy. However, if the length of the inner extension pipe is 20 m or even 30 m, the insertion and extraction of the whole inner extension pipe becomes very difficult due to limited space or inconvenient operation. Although these internal extension pipes have small diameters and light weights, the length of the connecting pipe is very long, and the equipment is very high, so that a large crane with the height of 50 meters can be used for dismounting the connecting pipe with the weight of tens of kilograms. The difficulty and cost of disassembly and assembly are great. From the manufacturing point of view, the inner extension pipe is not suitable for tailor welding because the inner surface of the pipe is not allowed to have surplus height or deformation formed by welding due to the need of inserting an instrument for measuring temperature or liquid level into the pipe. The manufacturing and transportation costs of the entire pipe are also enormous.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, adopts a mode that an overlong inner extension pipe is divided into a plurality of pipe units, and each two pipe units are connected by adopting a threaded joint, designs an inner extension pipe assembly of a vertical reactor spliced by utilizing threads, and solves the problem that the whole inner extension pipe is difficult to insert and pull in the vertical reactor due to the inconvenient operation caused by limited space at present.
In order to achieve the purpose, the invention provides the following technical scheme:
an inner extension pipe assembly of a vertical reactor comprises a plurality of pipe units and a plurality of threaded joints, wherein connecting rings are coaxially arranged on two end faces of each pipe unit, the inner diameter of each connecting ring is equal to the inner diameter of each pipe unit, the outer diameter of each connecting ring is smaller than the outer diameter of each pipe unit, external threads are arranged on the outer circumferential faces of the connecting rings, the rotating directions of the threads at two ends of each pipe unit are opposite, internal threads are coaxially arranged at two ends of the inner circumferential face of each threaded joint, the rotating directions of the internal threads at two ends of each threaded joint are opposite, the internal threads on each threaded joint are matched with the external threads on each pipe unit, and the outer diameter of each threaded joint is equal to the outer diameter of each pipe unit.
Preferably, the internal threads at both ends of each threaded joint are equal in length.
Preferably, an annular limiting protrusion is arranged between the two sections of internal threads in each threaded joint, and the inner diameter of the limiting protrusion is equal to that of the pipe unit.
Preferably, an annular recessed area is coaxially arranged on the outer surface between the two ends of the threaded joint, the projection of the bottom surface of the annular recessed area on the end surface of the threaded joint is a hexagon, and the geometric center of the hexagon is located on the axis of the threaded joint.
Preferably, the external circle formed by the cross section of the threaded joint is a circumscribed circle of the hexagon.
Preferably, six grooves are arranged on the outer circumferential surface of the threaded joint in an equidistant circumferential array around the axis of the threaded joint, the groove is radially arranged on the threaded joint, the projection of the groove on the cross section of the threaded joint is a combination of a rectangle and an arch, the straight edge of the arc is one edge of the rectangle, one end of the arc on the groove faces the outside of the screwed joint, one rectangular end of the groove faces to the central shaft of the threaded joint, a pressing block is arranged in the groove through a spring, the axis of the spring is vertical to the axis of the threaded joint, the surface of the pressing block facing the outside of the threaded joint is a curved surface, the projections of the curved surfaces on any cross section of the threaded joint are the same arc, and the radius of a virtual circle where the arc is located is equal to the radius of the outer circumferential surface of the threaded joint; when the spring is in an elastically deformed state, the virtual circle is an excircle of the cross section of the threaded joint, and four side walls, perpendicular to the bottom of the groove, on the pressing block are in sliding contact with four inner side walls of the groove; in a contracted state of the spring, the pressing block completely enters the rectangular portion of the groove.
Preferably, the curved surface of the pressing block is a rough surface.
Preferably, a method for installing the inner extension pipe assembly in a vertical reactor comprises the following steps:
1) the method comprises the following steps that radial supporting pieces are longitudinally arranged on the inner wall of a vertical reactor, through holes with vertical axes are arranged at the free ends of the supporting pieces, and the axes of the through holes on all the supporting pieces are ensured to be collinear;
2) splicing the pipe units into an inner extension pipe through a threaded joint, sequentially penetrating the lower ends of the spliced partial inner extension pipes from the top end of the vertical reactor downwards to the through holes in the supporting piece in sequence in the splicing process, extending into the vertical reactor, and stopping splicing until the inner extension pipes formed by splicing the pipe units reach a preset length;
3) connecting the top end of the inner extension pipe formed by splicing in the step 2 with a flange cover;
4) and (4) fixing the flange cover in the step (3) on the upper surface of the vertical reactor.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention designs the inner extension pipe component of the vertical reactor spliced by using threads by dividing the overlong inner extension pipe into a plurality of pipe units and connecting every two pipe units by using the threaded joint, and solves the problem that the whole inner extension pipe is difficult to insert and pull in the vertical reactor due to inconvenient operation caused by limited space at present.
2. The length of the internal threads at the two ends of each threaded joint is equal, so that the parts of two adjacent pipe units spliced into the inner extension pipe, which are inserted into the threaded joints, are the same, and the stress of each pipe unit on the whole inner extension pipe is uniform.
3. The length of each pipe unit inserted into the threaded joint is limited by the arranged limiting bulges, so that the length of the internally spliced internally extending pipe is convenient to calculate.
4. According to the invention, the outer surface between the two ends of the threaded joint is coaxially provided with the annular depressed area, the projection of the bottom surface of the annular depressed area on the end surface of the threaded joint is a hexagon, and the geometric center of the hexagon is positioned on the axis of the threaded joint. After the arrangement, the threaded joint can be screwed by using a wrench conveniently.
Drawings
FIG. 1 is a schematic structural view of the present invention assembled into an inner extension tube and installed in a vertical reactor;
FIG. 2 is a cross-sectional view of a threaded joint provided with an annular recessed area;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural view of a tube unit;
FIG. 5 is a schematic view of a threaded joint provided with a groove;
FIG. 6 is a schematic view showing a structure in which a pressing block of a threaded joint provided with a groove is pressed into a rectangular portion of the groove;
fig. 7 is a sectional view of the threaded joint provided with the recess, taken along the plane B-B in fig. 6, rotated by a wrench.
Wherein, 1, a tube unit; 2. a threaded joint; 3. a connecting ring; 4. a limiting bulge; 5. a recessed region; 6. a groove; 7. a pressing block; 8. a spring; 9. a vertical reactor; 10. a support member; 11. a flange cover; 12. provided is a wrench.
Detailed Description
Referring to fig. 1 to 7, an inner extension pipe assembly of a vertical reactor includes a plurality of pipe units 1 and a plurality of screw joints 2, wherein both end surfaces of each pipe unit 1 are coaxially provided with connecting rings 3, the inner diameter of each connecting ring 3 is equal to the inner diameter of the pipe unit 1, the outer diameter of each connecting ring 3 is smaller than the outer diameter of the pipe unit 1, the outer circumferential surface of each connecting ring 3 is provided with external threads, the rotation directions of the threads at both ends of each pipe unit 1 are opposite, both ends of the inner circumferential surface of each screw joint 2 are coaxially provided with internal threads, the rotation directions of the internal threads at both ends of each screw joint 2 are opposite, the internal threads on the screw joints 2 are matched with the external threads on the pipe units 1, and the outer diameter of each screw joint 2 is equal to the outer diameter of the pipe unit 1.
In the embodiment, in the process of splicing the pipe units 1 into the inner extension pipe, one ends of the two pipe units 1 with opposite thread rotating directions are respectively inserted into two ends of the threaded joint 2, then the threaded joint 2 is rotated to enable the two pipe units 1 to be mutually close to be connected into a whole, and the process is repeated, so that the inner extension pipe can be spliced, because the outer diameter of the threaded joint 2 is equal to the outer diameter of the pipe unit 1, after the two adjacent pipe units 1 on the inner extension pipe are spliced in place, the outer surface of the inner extension pipe is smooth, the inner extension pipe arranged in the way can be installed and disassembled in sections no matter in the installation process or the disassembly process, and also can be manufactured and transported in sections, so that the manufacturing cost is reduced, and the insertion and extraction of the whole inner extension pipe can be realized by the way of splicing and disassembling in sections without a large crane with the height of 50 meters, solves the problem that the whole inner extension pipe is difficult to insert and pull in the vertical reactor 9 because the operation is inconvenient due to limited space at present.
Preferably, the internal threads at both ends of each threaded joint 2 are equal in length, so that the portions of the two adjacent pipe units 1 which are spliced together to form the internal extension pipe and inserted into the threaded joint 2 are the same, and thus, the stress on each pipe unit 1 is uniform on the whole internal extension pipe.
As a preferable mode, as shown in fig. 2, an annular limiting protrusion 4 is arranged in each threaded joint 2 between two sections of the internal threads, the inner diameter of the limiting protrusion 4 is equal to the inner diameter of the pipe unit 1, and the length of each pipe unit 1 inserted into the threaded joint 2 is limited by the arranged limiting protrusion 4, so that the length of the internally spliced internally extended pipe is conveniently calculated.
As a preferable mode, as shown in fig. 3, an annular recessed area 5 is coaxially provided on the outer surface between both ends of the threaded joint 2, and a projection of a bottom surface of the annular recessed area 5 on the end surface of the threaded joint 5 is a hexagon, and a geometric center of the hexagon is located on the axis of the threaded joint 2. So arranged, the threaded joint 2 is conveniently tightened using the wrench 12.
In a preferred mode, the cross section of the threaded joint 2 forms an outer circle which is a circumscribed circle of the hexagon. With this arrangement, the probability of the annular depression 5 being stuck by the support member 10 can be reduced during the process of the extension pipe spliced by the pipe units 1 extending into the vertical reactor 9. Because ridges coinciding with the outer peripheral surface of the threaded joint 2 and being parallel to the axis of the threaded joint 2 are formed at the vertices of the hexagon.
Preferably, the threaded joint 2 is provided with six grooves 6 on its outer circumferential surface in an equidistant circumferential array around the axis of the threaded joint 2, the groove 6 is radially arranged on the threaded joint 2, the projection of the groove 6 on the cross section of the threaded joint 2 is a combination of a rectangle and an arch, the straight edge of the arc is one edge of the rectangle, one end of the arc on the groove 6 faces the outside of the screwed joint 2, one rectangular end of the groove 6 faces the central axis of the threaded joint 2, a pressing block 7 is arranged in the groove 6 through a spring 8, the axis of the spring 8 is vertical to the axis of the threaded joint 2, the surface of the pressing block 7 facing the outside of the threaded joint 2 is a curved surface, the projections of the curved surfaces on any cross section of the threaded joint 2 are the same arc, and the radius of a virtual circle where the arc is located is equal to the radius of the outer circumferential surface of the threaded joint 2; when the spring 8 is in an elastically deformed state, the virtual circle is an excircle of the cross section of the threaded joint 2, and four side walls, perpendicular to the bottom of the groove 6, on the pressing block 7 are in sliding contact with four inner side walls of the groove 6; in the contracted state of the spring 8, the pressing block 7 is fully inserted into the rectangular portion of the recess 6. After the arrangement, in the process of splicing the pipe unit 1, the pressing block 7 can be squeezed into the rectangular part of the groove 6, the wrench 12 can conveniently clamp the threaded joint 2 (as shown in fig. 6 and 7), after the splicing is completed and the wrench 12 leaves the threaded joint 2, the pressing block 7 can restore to fill and level the groove 6, so that the inner extending pipe cannot be clamped by the hole edge of the through hole of the support member 10 in the process of extending into the through hole of the support member 10.
Preferably, the pressing block 7 has a rough curved surface, and the rough surface is provided to prevent slippage when the wrench 12 grips the threaded joint 2.
A method of installing the above-described inner extension tube assembly in a vertical reactor, comprising:
1) the method comprises the following steps that radial supporting pieces 10 are longitudinally arranged on the inner wall of a vertical reactor 9, through holes with vertical axes are arranged at the free ends of the supporting pieces 10, and the axes of the through holes on all the supporting pieces 10 are ensured to be collinear;
2) splicing the pipe units 1 into inner extension pipes through threaded joints 2, sequentially penetrating the lower ends of the spliced partial inner extension pipes from the top end of the vertical reactor 9 downwards to the through holes in the supporting piece 10 in sequence in the splicing process, extending into the vertical reactor 9, and stopping splicing until the inner extension pipes spliced by the pipe units 1 reach a preset length;
3) connecting the top end of the inner extension pipe formed by splicing in the step 2 with a flange cover 11;
4) and (3) fixing the flange cover 11 in the step (3) on the upper surface of the vertical reactor 9.
Claims (8)
1. An inner extension pipe component of a vertical reactor is characterized by comprising a plurality of pipe units (1) and a plurality of threaded joints (2), wherein two end faces of each pipe unit (1) are coaxially provided with connecting rings (3), the inner diameter of the connection ring (3) is equal to the inner diameter of the tube unit (1), the outer diameter of the connection ring (3) is smaller than the outer diameter of the tube unit (1), the outer circumferential surface of the connecting ring (3) is provided with external threads, the rotating directions of the threads at the two ends of each pipe unit (1) are opposite, the two ends of the inner circumferential surface of the threaded connector (2) are coaxially provided with internal threads, the rotating directions of the internal threads at the two ends of each threaded connector (2) are opposite, the internal thread on the screwed joint (2) is matched with the external thread on the pipe unit (1), the outer diameter of the threaded joint (2) is equal to the outer diameter of the pipe unit (1).
2. The inner extension pipe assembly of a vertical reactor as claimed in claim 1, wherein the internal threads of both ends of each threaded joint (2) are equal in length.
3. The internal extension tube assembly of a vertical reactor as claimed in claim 1, wherein each of said threaded joints (2) is provided with an annular stop protrusion (4) between two sections of said internal thread, the internal diameter of said stop protrusion (4) being equal to the internal diameter of said tube unit (1).
4. The inner extension pipe assembly of a vertical reactor as claimed in claim 1, wherein the outer surface of the threaded joint (2) between the two ends is coaxially provided with an annular recessed area (5), the projection of the bottom surface of the annular recessed area (5) on the end surface of the threaded joint (5) is a hexagon, and the geometric center of the hexagon is positioned on the axis of the threaded joint (2).
5. The inner extension pipe assembly of a vertical reactor as claimed in claim 4, wherein the cross section of the threaded joint (2) forms an outer circle which is a circumscribed circle of the hexagon.
6. The inner extension pipe assembly of a vertical reactor, as claimed in claim 1, characterized in that six grooves (6) are arranged on the outer circumferential surface of the threaded joint (2) in an equidistant circumferential array around the axis of the threaded joint (2), the grooves (6) are radially arranged on the threaded joint (2), the projection of the grooves (6) on the cross section of the threaded joint (2) is a combination of a rectangle and an arch, the straight side of the arch is one side of the rectangle, the arch end of the grooves (6) faces the outside of the threaded joint (2), the rectangle end of the grooves (6) faces the central axis of the threaded joint (2), the grooves (6) are internally provided with pressing blocks (7) through springs (8), and the axis of the springs (8) is perpendicular to the axis of the threaded joint (2), the surface of the pressing block (7) facing the outside of the threaded joint (2) is a curved surface, projections of the curved surface on any cross section of the threaded joint (2) are the same arc, and the radius of a virtual circle where the arc is located is equal to the radius of the outer circumferential surface of the threaded joint (2); when the spring (8) is in an elastically-deformed state, the virtual circle is an excircle of the cross section of the threaded joint (2), and four side walls, perpendicular to the bottom of the groove (6), on the pressing block (7) are in sliding contact with four inner side walls of the groove (6); in the contracted state of the spring (8), the pressing block (7) completely enters the rectangular part of the groove (6).
7. The inner extension tube assembly of a vertical reactor as claimed in claim 6, wherein the curved surface of the pressing block (7) is rough.
8. A method of installing the inner extension tube assembly of any one of claims 1-7 in a vertical reactor, comprising:
1) the method comprises the following steps that radial supporting pieces (10) are longitudinally arranged on the inner wall of a vertical reactor (9), through holes with vertical axes are arranged at the free ends of the supporting pieces (10), and the axes of the through holes on all the supporting pieces (10) are ensured to be collinear;
2) splicing the pipe units 1 into an inner extension pipe through a threaded joint (2), sequentially penetrating the lower ends of the spliced partial inner extension pipes from the top end of a vertical reactor (9) downwards to the lower end of the partial inner extension pipe sequentially through a through hole in a supporting piece (10) and extending into the vertical reactor (9) in the splicing process, and stopping splicing until the inner extension pipe formed by splicing the pipe units (1) and the internal threaded joint (2) reaches a preset length;
3) connecting the top end of the inner extension pipe formed by splicing in the step 2 with a flange cover (11);
4) and (3) fixing the flange cover (11) in the step (3) on the upper surface of the vertical reactor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507247.7A CN114811211B (en) | 2022-05-11 | 2022-05-11 | Inner extension pipe assembly of vertical reactor and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507247.7A CN114811211B (en) | 2022-05-11 | 2022-05-11 | Inner extension pipe assembly of vertical reactor and installation method thereof |
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| Publication Number | Publication Date |
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| CN114811211A true CN114811211A (en) | 2022-07-29 |
| CN114811211B CN114811211B (en) | 2024-05-03 |
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| CN202210507247.7A Active CN114811211B (en) | 2022-05-11 | 2022-05-11 | Inner extension pipe assembly of vertical reactor and installation method thereof |
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| DE102017107286A1 (en) * | 2017-04-05 | 2018-10-11 | Voith Patent Gmbh | Loosening lock for a nut and screw connection with such a release lock |
| CN210739620U (en) * | 2019-06-21 | 2020-06-12 | 扬州市瑞和机械有限公司 | Hydraulic part joint with good protection performance |
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