CN219957171U - Hydrogen embrittlement sensitivity test device for hydrogen-doped natural gas pipeline - Google Patents
Hydrogen embrittlement sensitivity test device for hydrogen-doped natural gas pipeline Download PDFInfo
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- CN219957171U CN219957171U CN202320267577.3U CN202320267577U CN219957171U CN 219957171 U CN219957171 U CN 219957171U CN 202320267577 U CN202320267577 U CN 202320267577U CN 219957171 U CN219957171 U CN 219957171U
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- test tube
- hydrogen
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- test
- natural gas
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- 238000012360 testing method Methods 0.000 title claims abstract description 114
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 32
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000001257 hydrogen Substances 0.000 title claims abstract description 21
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 21
- 239000003345 natural gas Substances 0.000 title claims abstract description 16
- 230000035945 sensitivity Effects 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses a hydrogen embrittlement sensitivity test device of a hydrogen-doped natural gas pipeline, and relates to the technical field of pipeline testing; the utility model comprises a test box, a test tube and an arc plate, wherein the test box is connected with an air inlet pipe, the test tube is placed on the upper surface of a support plate, then the inner surface of the arc plate is attached to the outer wall of the test tube, a connecting plate is aligned with a hole in the support plate, then the test tube is fixed through a screw rod, a double-headed motor is started to drive a connecting rod of an output end to rotate, so that the gear rotates, the gear drives a toothed plate meshed with the gear to move downwards, the support plate moves downwards, when a limiting block moves to the bottommost part of a limiting groove, the test tube is aligned with the air inlet pipe, the test tube and the air inlet pipe are connected together through bolts and nuts, water is injected into the test box, air can be conveyed into the test tube through the air inlet pipe, and the pressure born by the test tube is tested through observing the numerical value provided by a display by a pressure tester on the test tube.
Description
Technical Field
The utility model relates to the technical field of pipeline testing, in particular to a hydrogen embrittlement sensitivity test device for a hydrogen-doped natural gas pipeline.
Background
Under the condition of grounding extremely-high current discharge, the potential of the natural gas pipeline material is greatly negatively shifted, so that the polarization potential of the pipeline material is excessively negative, and hydrogen evolution reaction occurs on the metal surface to generate a large amount of adsorbed hydrogen atoms. Previous studies show that hydrogen atoms can diffuse into the material and accumulate and migrate, and when a specific concentration is reached, the material is damaged to different degrees, including white spots, hydrogen bubbling and hydrogen induced cracking, hydrogen plasticity loss, hydrogen hysteresis cracking (hydrogen induced cracking for short) and the like in steel.
After the pipeline is produced, the produced pipeline is required to be tested, when the pipeline is tested in the prior art, gas is conveyed to the pipeline, cracks are generated in the pipeline, and when leakage occurs, the problems cannot be observed in the first time, and the inventor proposes a hydrogen embrittlement sensitivity test device for the hydrogen-doped natural gas pipeline, which is used for solving the problems.
Disclosure of Invention
In order to solve the problems that after the pipeline production is completed, the pipeline after the production is required to be tested, when the pipeline is tested in the prior art, gas is conveyed to the pipeline, cracks are generated in the pipeline, and when leakage occurs, the problem cannot be observed in the first time; the utility model aims to provide a hydrogen embrittlement sensitivity test device for a hydrogen-doped natural gas pipeline.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a hydrogen embrittlement sensitivity test device of hydrogen-doped natural gas pipeline, including the test box, test tube and arc, be connected with the intake pipe on the test box, the fixed supporting leg that is equipped with in lower surface of test box, be connected with the outlet pipe on the test box, be connected with the drainage valve on the outlet pipe, the spacing groove has been seted up to the inside of test box, the cross-section shape of spacing groove and stopper is "T" shape, the sliding of spacing groove is equipped with the stopper, one side of stopper is fixed and is equipped with the backup pad, the backup pad is in sliding fit with the inner wall of test box, the test tube can be placed on the backup pad, the arc is in movable fit with the surface of test tube, the fixed connecting plate that is equipped with in lower surface of arc, the connecting plate is in sliding fit with the surface of backup pad, the screw rod has been inserted to the screw thread on the connecting plate, the tip screw thread of screw rod is inserted and is established in the backup pad, test tube is in movable fit with the intake pipe, be connected with the outlet duct on the outlet pipe, the screw thread has been inserted the bolt on the outlet pipe, the bolt runs through the intake pipe, the outside surface thread cover of bolt is equipped with the nut;
lifting components are arranged on the supporting plate and the test box.
Preferably, the lifting assembly comprises a fixing plate, the fixing plate is fixedly connected to the upper surface of the test box, a double-headed motor is fixedly arranged on the fixing plate, the output end of the double-headed motor is provided with a connecting rod, the other end of the connecting rod is fixedly provided with a gear, the inside of the test box is provided with sliding grooves, the sliding grooves are formed in two, the sliding grooves are symmetrically formed in the inner surface of the test box, sliding rods are arranged in the sliding grooves in a sliding manner, a toothed plate is fixedly arranged on one side of the sliding rods, and the toothed plate is fixedly connected with the upper surface of the supporting plate and meshed with the toothed plate.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the test tube is placed on the upper surface of the supporting plate, the inner surface of the arc-shaped plate is attached to the outer wall of the test tube, the connecting plate is aligned with the hole in the supporting plate, then the connecting plate is fixed through the screw rod, the double-headed motor is started to drive the connecting rod at the output end to rotate, so that the gear rotates, the toothed plate meshed with the gear is driven to move downwards, the supporting plate moves downwards, slide limiting blocks slide along the limiting grooves, when the limiting blocks move to the bottommost part of the limiting grooves, the test tube is aligned with the air inlet pipe, the two are connected together through the bolt and the nut, water is injected into the test box, gas can be conveyed into the test tube through the air inlet pipe, the pressure which can be born by the test tube is tested through observing the value provided by the pressure tester on the test tube, when the test tube leaks, the air bubble appears, the value is recorded, the air outlet valve is started to exhaust firstly at the air inlet pipe, and after the double-headed motor is reversed, the supporting plate is separated from the water, the test tube is detached, and a new test tube is replaced for testing.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model.
FIG. 2 is a schematic diagram of the structure of the test box and the lifting assembly according to the present utility model.
FIG. 3 is a schematic diagram of the module structure of the present utility model.
In the figure: 1. a test box; 11. a water outlet pipe; 12. a drain valve; 13. support legs; 14. an air inlet pipe; 2. a support plate; 21. a limit groove; 22. a limiting block; 3. a test tube; 31. a bolt; 32. a nut; 33. an air outlet pipe; 34. an exhaust valve; 4. an arc-shaped plate; 41. a connecting plate; 42. a screw; 5. a lifting assembly; 51. a fixing plate; 52. a double-ended motor; 53. a connecting rod; 54. a gear; 55. a chute; 56. a slide bar; 57. toothed plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one: as shown in figures 1-3, the utility model provides a hydrogen embrittlement sensitivity test device of a hydrogen-doped natural gas pipeline, which comprises a test box 1, a test tube 3 and an arc plate 4, wherein an air inlet pipe 14 is connected to the test box 1, a supporting leg 13 is fixedly arranged on the lower surface of the test box 1, a limit groove 21 is formed in the test box 1, the cross sections of the limit groove 21 and the limit block 22 are both T-shaped, the limit groove 21 is slidably provided with the limit block 22, one side of the limit block 22 is fixedly provided with a supporting plate 2, the supporting plate 2 is slidably attached to the inner wall of the test box 1, the test tube 3 can be placed on the supporting plate 2, a pressure test module is arranged on the test tube 3 and comprises a pressure tester, the compaction test module is connected with a display module, the display module comprises a display, the numerical value during pressure measurement can be displayed, the arc plate 4 is movably attached to the surface of the test tube 3, the lower surface of the arc plate 4 is fixedly provided with a connecting plate 41, the connecting plate 41 is in sliding fit with the surface of the supporting plate 2, a screw rod 42 is inserted into the connecting plate 41 in a threaded manner, the end part of the screw rod 42 is inserted into the supporting plate 2, the test tube 3 is movably fit with the air inlet pipe 14, a bolt 31 is inserted into the test tube 3 in a threaded manner, the bolt 31 penetrates through the air inlet pipe 14, a nut 32 is sleeved on the outer surface of the bolt 31 in a threaded manner, the test tube 3 can be placed on the upper surface of the supporting plate 2, then the inner surface of the arc plate 4 is fit with the outer wall of the test tube 3, the connecting plate 41 is aligned with a hole on the supporting plate 2, then the connecting plate is fixed through the screw rod 42, the double-headed motor 52 can be started to drive the connecting rod 53 at the output end to rotate, so that a gear 54 rotates, the gear 54 drives a toothed plate 57 meshed with the gear 54 to move downwards, the supporting plate 2 moves downwards, and a limiting block 22 slides along a limiting groove 21, when the limiting block 22 moves to the bottommost part of the limiting groove 21, the test tube 3 is aligned with the air inlet pipe 14, the two are connected together through the bolt 31 and the nut 32, water is injected into the test box 1, air can be conveyed into the test tube 3 through the air inlet pipe 14, the pressure born by the test tube 3 is tested by observing the numerical value provided by the pressure tester on the test tube 3 to the display, when the test tube 3 is cracked and leaked, air bubbles appear, the numerical value is recorded, the air inlet pipe 14 firstly opens the air outlet valve 34 for air outlet, the double-headed motor 52 is reversed to separate the supporting plate 2 from the water, and after the test tube 3 is detached, a new test tube 3 is replaced for testing;
lifting components 5 are arranged on the supporting plate 2 and the test box 1;
the lifting assembly 5 comprises a fixing plate 51, the fixing plate 51 is fixedly connected to the upper surface of the test box 1, a double-headed motor 52 is fixedly arranged on the fixing plate 51, a connecting rod 53 is arranged at the output end of the double-headed motor 52, a gear 54 is fixedly arranged at the other end of the connecting rod 53, sliding grooves 55 are formed in the test box 1, two sliding grooves 55 are formed in the sliding grooves 55, the sliding grooves 55 are symmetrically arranged on the inner surface of the test box 1, sliding rods 56 are slidably arranged in the sliding grooves 55, a toothed plate 57 is fixedly arranged on one side of each sliding rod 56, the toothed plate 57 is fixedly connected with the upper surface of the support plate 2, and the gear 54 is meshed with the toothed plate 57.
The test box 1 is connected with a water outlet pipe 11, and the water outlet pipe 11 is connected with a water outlet valve 12.
By adopting the technical scheme, the water is conveniently drained.
The test tube 3 is connected with an air outlet pipe 33, and the air outlet pipe 33 is connected with an exhaust valve 34.
By adopting the technical scheme, the exhaust is assisted.
Working principle: when the utility model is used, the test tube 3 can be placed on the upper surface of the supporting plate 2, then the inner surface of the arc plate 4 is attached to the outer wall of the test tube 3, the connecting plate 41 is aligned with the hole on the supporting plate 2, then the connecting plate is fixed by the screw rod 42, the connecting rod 53 at the output end can be driven to rotate by starting the double-headed motor 52, so that the gear 54 rotates, the gear 54 drives the toothed plate 57 meshed with the gear 54 to move downwards, the supporting plate 2 moves downwards, the limiting block 22 slides along the limiting groove 21, when the limiting block 22 moves to the bottommost part of the limiting groove 21, the test tube 3 is aligned with the air inlet pipe 14, the bolt 31 is matched with the nut 32 to connect the two together, water is injected into the test box 1, the air inlet pipe 14 is used for conveying air into the test tube 3, the pressure which can be born by the test tube 3 is tested by observing the numerical value provided by the pressure tester on the test tube 3, when the test tube 3 generates cracks, the bubbles appear, at the moment, the numerical value is recorded, the air inlet pipe 14 is started, the air outlet valve 34 is firstly for exhausting, the reverse motor 52 is used for separating the supporting tube 2 from the water, the test tube 3, and then the test tube 3 is detached after the test tube is newly replaced.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The utility model provides a hydrogen embrittlement sensitivity test device of hydrogen-doped natural gas pipeline, includes test box (1), test tube (3) and arc (4), its characterized in that: the novel air inlet device is characterized in that an air inlet pipe (14) is connected to the test box (1), a limit groove (21) is formed in the test box (1), a limit block (22) is arranged in the limit groove (21) in a sliding mode, a supporting plate (2) is fixedly arranged on one side of the limit block (22), the supporting plate (2) is in sliding fit with the inner wall of the test box (1), the test tube (3) can be placed on the supporting plate (2), the arc plate (4) is in movable fit with the surface of the test tube (3), a connecting plate (41) is fixedly arranged on the lower surface of the arc plate (4), the connecting plate (41) is in sliding fit with the surface of the supporting plate (2), a screw (42) is inserted into the connecting plate (41), the end portion of the screw (42) is in threaded insertion mode on the supporting plate (2), the test tube (3) is in movable fit with the air inlet pipe (14), a bolt (31) is inserted into the upper thread of the test tube (3), the bolt (31) penetrates through the air inlet pipe (14), and a nut (32) is sleeved on the outer side surface of the bolt (31).
Lifting components (5) are arranged on the supporting plate (2) and the test box (1).
2. The hydrogen embrittlement sensitivity test device of the hydrogen-doped natural gas pipeline according to claim 1, wherein the lifting assembly (5) comprises a fixed plate (51), the fixed plate (51) is fixedly connected to the upper surface of the test box (1), a double-head motor (52) is fixedly arranged on the fixed plate (51), a connecting rod (53) is arranged at the output end of the double-head motor (52), a gear (54) is fixedly arranged at the other end of the connecting rod (53), a sliding groove (55) is formed in the test box (1), a sliding rod (56) is arranged in the sliding groove (55) in a sliding mode, a toothed plate (57) is fixedly arranged on one side of the sliding rod (56), the toothed plate (57) is fixedly connected to the upper surface of the support plate (2), and the gear (54) is meshed with the toothed plate (57).
3. The hydrogen embrittlement sensitivity test device of the hydrogen-doped natural gas pipeline according to claim 1, wherein the test box (1) is connected with a water outlet pipe (11), and the water outlet pipe (11) is connected with a water outlet valve (12).
4. The hydrogen embrittlement sensitivity test device of the hydrogen-doped natural gas pipeline according to claim 1, wherein the test tube (3) is connected with an air outlet tube (33), and the air outlet tube (33) is connected with an air exhaust valve (34).
5. The hydrogen embrittlement sensitivity test device of the hydrogen-doped natural gas pipeline according to claim 1, wherein the cross sections of the limiting groove (21) and the limiting block (22) are both T-shaped.
6. The hydrogen embrittlement sensitivity test device of the hydrogen-doped natural gas pipeline according to claim 2, wherein two sliding grooves (55) are formed, and the sliding grooves (55) are symmetrically arranged on the inner surface of the test box (1).
7. The hydrogen embrittlement sensitivity test device of the hydrogen-doped natural gas pipeline according to claim 1, wherein the lower surface of the test box (1) is fixedly provided with supporting legs (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320267577.3U CN219957171U (en) | 2023-02-21 | 2023-02-21 | Hydrogen embrittlement sensitivity test device for hydrogen-doped natural gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320267577.3U CN219957171U (en) | 2023-02-21 | 2023-02-21 | Hydrogen embrittlement sensitivity test device for hydrogen-doped natural gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219957171U true CN219957171U (en) | 2023-11-03 |
Family
ID=88535173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320267577.3U Active CN219957171U (en) | 2023-02-21 | 2023-02-21 | Hydrogen embrittlement sensitivity test device for hydrogen-doped natural gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219957171U (en) |
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2023
- 2023-02-21 CN CN202320267577.3U patent/CN219957171U/en active Active
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