An in-detector hydrogen compatibility test device

Abstract

This application provides a hydrogen compatibility testing device for an internal detector, relating to the field of safety testing technology for hydrogen energy transmission pipelines. The device includes a hydrogen source, a test vessel, and a vacuum pump. The hydrogen source is connected to the test vessel via a first pipeline, which is equipped with a pressure regulating component, including a booster pump. The test vessel is connected to the vacuum pump via a second pipeline, which is equipped with a first shut-off valve. This hydrogen compatibility testing device for an internal detector can simulate an actual hydrogen energy transmission pipeline, thereby enabling testing of the internal detector in a hydrogen environment.

Description

Technical Field

[0001] This utility model relates to the field of safety testing technology for hydrogen energy transmission pipelines, specifically to an internal detector hydrogen compatibility testing device. Background Technology

[0002] Hydrogen energy is a key carrier in the clean energy transition, and pipelines, as the "arteries" of hydrogen transportation, directly affect the continuity of energy supply. Regular inspections of hydrogen transmission pipelines using internal detectors can prevent sudden failures and avoid energy interruptions. An internal detector is a moving inspection device inside the pipeline, typically equipped with sensors, cameras, or other detection devices to monitor pipeline defects such as wall thickness, cracks, and corrosion in real time.

[0003] Unlike traditional natural gas, hydrogen has unique physicochemical properties. To ensure the stable operation of the internal detector in a high-pressure, highly permeable hydrogen environment and to prevent material degradation or functional failure caused by hydrogen, thereby guaranteeing the accuracy and safety of pipeline inspection, hydrogen compatibility testing of the internal detector is necessary. However, currently there is no device available for testing the hydrogen compatibility of the internal detector, making such testing impossible. Utility Model Content

[0004] To address the aforementioned issues, this application provides an internal detector hydrogen compatibility testing device that can simulate an actual hydrogen energy transmission pipeline, thereby enabling the testing of the internal detector in a hydrogen environment.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An internal detector hydrogen compatibility testing device includes a hydrogen source, a test vessel, and a vacuum pump;

[0007] The hydrogen source is connected to the test vessel through a first pipeline, and the first pipeline is equipped with a pressure regulating component, which includes a booster pump.

[0008] The test vessel is connected to the vacuum pump via a second pipeline, and a first shut-off valve is installed on the second pipeline.

[0009] Furthermore, the test vessel is equipped with a first safety valve, a first pressure relief valve, and a first pressure gauge.

[0010] Furthermore, the pressure regulating component also includes a buffer tank, and the buffer tank is located upstream of the booster pump.

[0011] Furthermore, it also includes a nitrogen source, and the nitrogen source is connected to the test vessel via a third pipeline.

[0012] Furthermore, the first pipeline and the third pipeline have a first common section and a second common section. The pressure regulating component is located between the first common section and the second common section, and the first common section is located upstream of the pressure regulating component. A second check valve is provided on the first common section, and a third check valve and a second shut-off valve are provided on the second common section. A third shut-off valve is provided on the first pipeline between the hydrogen source and the first common section. A fourth shut-off valve is provided on the first pipeline between the first common section and the pressure regulating component. A fifth shut-off valve is provided on the third pipeline between the nitrogen source and the first common section. A sixth shut-off valve is provided on the third pipeline between the first common section and the second common section.

[0013] Furthermore, the test vessel includes a main shell, and a sealing component is provided at the open end of the main shell;

[0014] The sealing component includes a top clamping plate, which is detachably connected to the main housing. A sealing plate is provided on the side of the top clamping plate near the main housing. The sealing plate is slidably connected to the top clamping plate. A clamping member is provided between the sealing plate and the top clamping plate. Under the pushing action of the clamping member, the sealing plate can approach the main housing and seal the opening end of the main housing.

[0015] Furthermore, a first hinge cylinder is provided on one side of the main housing, and a support arm is provided on the top tension plate. The suspended end of the support arm is rotatably connected to the first hinge cylinder through a first hinge shaft. A tension rod is hinged on the other side of the main housing, and a locking nut is provided on the tension rod. A locking notch for accommodating the tension rod is provided on the top tension plate.

[0016] Furthermore, the top plate is provided with a support column, and the lower end of the support column is provided with a traveling wheel.

[0017] Furthermore, the main housing is provided with a clamping component, which includes a lead screw rotatably mounted above the main housing and a drive motor for driving the lead screw to rotate. The lead screw extends horizontally and is arranged perpendicular to the axis of the main housing. The lead screw is provided with two nuts. A first clamp is provided below the open end of the main housing. Second clamps are provided on the left and right sides of the main housing, respectively. The two second clamps are symmetrically arranged and correspond one-to-one with the two nuts. The lower end of the second clamp is hinged to the first clamp through a third hinge shaft, and the upper end of the second clamp is hinged to the corresponding nut. The inner surfaces of the first clamp and the second clamp are provided with grooves.

[0018] When the two described screw nuts move toward each other, the first clamp and the second clamp retract, and the grooves of the first clamp and the second clamp form a complete annular groove. The edge of the sealing plate and the flange edge of the opening end of the main housing are confined within the annular groove.

[0019] When the two described thread nuts move in opposite directions, the first clamp and the second clamp disperse outward.

[0020] Furthermore, the main housing is provided with guide grooves that correspond one-to-one with the third hinge shaft, and the guide grooves extend in the vertical direction.

[0021] The beneficial effects of this utility model are:

[0022] The hydrogen compatibility testing device for an internal detector provided in this application embodiment simulates the actual hydrogen energy transmission pipeline environment by setting up a test vessel and filling the test vessel with hydrogen at a certain pressure. This allows for testing of the internal detector in a hydrogen environment, effectively evaluating the performance of the internal detector, and ensuring its safe and stable operation in the hydrogen transmission pipeline. Attached Figure Description

[0023] Figure 1 A schematic diagram of a hydrogen compatibility testing device for an internal detector provided in this application embodiment;

[0024] Figure 2 Schematic diagram of the three-dimensional structure of the test vessel Figure 1 ;

[0025] Figure 3 Schematic diagram of the three-dimensional structure of the test vessel Figure 2 ;

[0026] Figure 4 This is a side view of the test vessel;

[0027] Figure 5 This is the front view of the test vessel;

[0028] Figure 6 for Figure 5 AA section view in the middle;

[0029] Figure 7 for Figure 5 BB section view in the middle;

[0030] Figure 8 for Figure 7 A magnified structural diagram of part A in the middle;

[0031] Figure 9 This is a three-dimensional structural diagram of the main shell of the test vessel;

[0032] Figure 10A three-dimensional structural diagram of the sealing component;

[0033] Figure 11 A three-dimensional structural diagram of the clamping component when it is in the open state;

[0034] Figure 12 This is a schematic diagram of the test vessel when the clamping components are open;

[0035] Figure 13 This is a schematic diagram of the structure of the test vessel when it is opened.

[0036] In the diagram: 11. Hydrogen source; 111. Hydrogen cylinder; 112. Seventh shut-off valve; 12. Nitrogen source; 121. Nitrogen cylinder; 122. Eighth shut-off valve;

[0037] 2. Test vessel; 211. First safety valve; 212. First pressure relief valve; 213. First pressure gauge; 22. Main shell; 221. Support leg; 222. First hinge cylinder; 2221. Clearance notch; 2222. First hinge part; 2223. Second hinge part; 223. First connecting plate; 224. Second connecting plate; 2241. Connecting lug; 225. Third connecting plate; 2251. Wing plate; 226. Seat plate; 227. Fourth connecting plate; 228. Guide groove; 231. Top clamping plate; 2311. Locking notch; 232. Guide sleeve; 233. Support arm; 2331. Second hinge cylinder; 2332. First upright plate; 2333. Second upright plate; 2334. 234. Reinforcing plate; 2341. Support column; 2341. Traveling wheel; 235. Rib plate; 236. Mounting plate; 241. Sealing plate; 242. Guide rod; 25. Screw jack; 251. Screw; 261. First hinge shaft; 2611. Shaft body; 2612. Baffle; 262. Support bolt; 2621. Back tightening nut; 27. Tensioning rod; 271. Locking nut; 28. Thrust ball bearing; 291. Screw; 292. Drive motor; 293. Screw nut; 294. First clamp; 2941. First ear plate; 295. Second clamp; 2951. Second ear plate; 2952. Third ear plate; 296. Third hinge shaft; 297. Fourth hinge shaft; 298. Coupling;

[0038] 3. Vacuum pump;

[0039] 41. First pipeline; 42. Second pipeline; 43. Third pipeline;

[0040] 51. Booster pump; 52. Buffer tank; 521. Second safety valve; 522. Second pressure relief valve; 523. Second pressure gauge;

[0041] 61. First shut-off valve; 62. Second shut-off valve; 63. Third shut-off valve; 64. Fourth shut-off valve; 65. Fifth shut-off valve; 66. Sixth shut-off valve;

[0042] 71. First check valve; 72. Second check valve; 73. Third check valve. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. The described embodiments are merely a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the protection scope of this application.

[0044] To facilitate understanding of the specific embodiments of this application, the coordinate system for the test vessel is defined as follows: Figure 2 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0045] Example 1

[0046] like Figure 1 As shown, an internal detector hydrogen compatibility testing device includes a hydrogen source 11, a test vessel 2, and a vacuum pump 3. The hydrogen source 11 is connected to the test vessel 2 via a first pipeline 41, which is equipped with a pressure regulating component, including a booster pump 51. The test vessel 2 is connected to the vacuum pump 3 via a second pipeline 42, which is equipped with a first shut-off valve 61 for controlling the on / off state of the second pipeline 42. The test vessel 2 is equipped with a first safety valve 211, a first pressure relief valve 212, and a first pressure gauge 213.

[0047] Furthermore, the pressure regulating component also includes a buffer tank 52, which is located upstream of the booster pump 51. The buffer tank 52 is equipped with a second safety valve 521, a second pressure relief valve 522, and a second pressure gauge 523. Because hydrogen has a small molecular weight and low density, its flow rate is easily unstable due to pressure fluctuations during transport. The buffer tank 52, by storing and releasing hydrogen, can absorb upstream gas supply pressure pulsations, thereby ensuring a stable inlet pressure for the booster pump 51. This allows the booster pump 51 to always operate under its design conditions, avoiding efficiency reduction or overload caused by frequent adjustments to its operating conditions due to sudden pressure drops or rises.

[0048] Furthermore, since the downstream high-pressure fluid may flow back to the pump body due to the pressure difference when the booster pump 51 stops operating (e.g., due to power failure or shutdown), a first check valve 71 is provided at the outlet of the booster pump 51. By providing the first check valve 71, backflow can be physically prevented, avoiding damage to the mechanical structure of the booster pump 51 and extending its service life; on the other hand, it can ensure that the pressure from the outlet of the booster pump 51 to the downstream pipeline is maintained at a certain level, stabilizing the system pressure.

[0049] Furthermore, an internal detector hydrogen compatibility test device also includes a nitrogen source 12, and the nitrogen source 12 is connected to the test vessel 2 via a third pipeline 43.

[0050] The first pipeline 41 and the third pipeline 43 have a first common section and a second common section. The pressure regulating component is located between the first common section and the second common section, with the first common section located upstream of the pressure regulating component and the second common section located downstream of the pressure regulating component. A second check valve 72 is installed on the first common section, and a third check valve 73 and a second shut-off valve 62 are installed on the second common section. A third shut-off valve 63 is installed on the first pipeline 41 between the hydrogen source 11 and the first common section, and a fourth shut-off valve 64 is installed on the first pipeline 41 between the first common section and the pressure regulating component. A fifth shut-off valve 65 is installed on the third pipeline 43 between the nitrogen source 12 and the first common section, and a sixth shut-off valve 66 is installed on the third pipeline 43 between the first common section and the second common section.

[0051] In one specific implementation, the hydrogen source 11 in this embodiment uses a group of hydrogen cylinders 111, and each hydrogen cylinder 111 is equipped with a seventh shut-off valve 112 at its outlet. The nitrogen source 12 uses a group of nitrogen cylinders 121, and each nitrogen cylinder 121 is equipped with an eighth shut-off valve 122 at its outlet.

[0052] The procedure for conducting the test is as follows:

[0053] First, place the internal detector into the test vessel 2, open the first shut-off valve 61, and use the vacuum pump 3 to evacuate until the preset vacuum level is reached.

[0054] Second, open nitrogen source 12, second shut-off valve 62, fifth shut-off valve 65 and sixth shut-off valve 66 to fill the test vessel 2 with nitrogen to 1.6 MPa, and check whether there is any leakage in the test vessel 2.

[0055] Third, after confirming that there is no leakage in the test vessel 2, open the first pressure relief valve 212 on the test vessel 2 to release the pressure, and then the vacuum pump 3 works to evacuate the test vessel 2 until the preset vacuum level is reached.

[0056] Fourth, open the hydrogen source 11, the second shut-off valve 62, the third shut-off valve 63 and the fourth shut-off valve 64 to fill the test vessel 2 with hydrogen to the required experimental pressure and maintain the pressure for a period of time.

[0057] Fifth, open the nitrogen source 12, the second shut-off valve 62, the fifth shut-off valve 65, the sixth shut-off valve 66 and the first pressure relief valve 212 on the test vessel 2 to vent the hydrogen in the test vessel 2 and replace it with nitrogen.

[0058] Sixth, open test vessel 2, remove the internal detector, and observe the damage.

[0059] Furthermore, to facilitate the handling and placement of the internal detector, such as... Figure 2 , Figure 3 and Figure 4 As shown, the test vessel 2 includes a main shell 22 with one open end and one blind end, and a support leg 221 is provided at the bottom of the main shell 22. The open end of the main shell 22 is provided with a sealing component for sealing the open end.

[0060] The sealing component includes a clamping plate 231, which is detachably connected to the main housing 22. A sealing plate 241 is provided on the side of the clamping plate 231 closest to the main housing 22. The sealing plate 241 is slidably connected to the clamping plate 231, and a clamping member is provided between the sealing plate 241 and the clamping plate 231. Under the pushing action of the clamping member, the sealing plate 241 can approach the main housing 22 and press against the open end of the main housing 22, thereby sealing the open end of the main housing 22.

[0061] As one specific implementation method, such as Figure 6 and Figure 10 As shown, in this embodiment, the sealing plate 241 is provided with a guide rod 242, and the tightening plate 231 is provided with a guide sleeve 232 that cooperates with the guide rod 242. The guide rod 242 is detachably and fixedly connected to the sealing plate 241, and the guide sleeve 232 is detachably and fixedly connected to the tightening plate 231. The tightening component is a screw jack 25. The housing of the screw jack 25 is fixedly connected to the tightening plate 231 by bolts, and the screw 251 of the screw jack 25 passes through the tightening plate 231 and is detachably and fixedly connected to the sealing plate 241.

[0062] like Figure 2 and Figure 3 As shown, a first hinge cylinder 222 is provided on the left side of the main housing 22, and the first hinge cylinder 222 is connected to the main housing 22 via a first connecting plate 223. For example, one end of the first connecting plate 223 is fixedly connected to the first hinge cylinder 222 by welding, and the other end of the first connecting plate 223 is fixedly connected to the main housing 22 by welding. A support arm 233 extending perpendicularly to the top plate 231 and toward one side of the main housing 22 is provided on the left end of the top plate 231, and the suspended end of the support arm 233 is rotatably connected to the first hinge cylinder 222 via a first hinge shaft 261. A second connecting plate 224 perpendicular to the axis of the main housing 22 is provided on the right side of the main housing 22. A tension rod 27 is provided on the second connecting plate 224. One end of the tension rod 27 is hinged to a connecting lug 2241 provided on the second connecting plate 224 via a second hinge shaft. A locking nut 271 is provided on the other end of the tension rod 27. A locking notch 2311 for accommodating the tension rod 27 is provided on the right end of the top plate 231.

[0063] In use, the top-tightening plate 231 is rotated via the first hinge shaft 261, so that the top-tightening plate 231 is parallel to the end face of the opening end of the main housing 22. Then, the tension rod 27 is rotated, so that the tension rod 27 moves into the locking notch 2311, and the locking nut 271 is located on the side of the top-tightening plate 231 facing away from the main housing 22. At this time, the handwheel on the screw jack 25 is rotated, so that the sealing plate 241 is pressed against the opening end of the main housing 22 with the top-tightening plate 231 as the fulcrum, thus sealing the opening end of the main housing 22. The reaction force of the top-tightening plate 231 as the fulcrum will act on the main housing 22 through the support arm 233, the first hinge shaft 261 and the tension rod 27.

[0064] As one specific implementation method, such as Figure 5 , Figure 7 and Figure 9As shown, in this embodiment, the first hinge cylinder 222 is provided with a clearance notch 2221, which divides the first hinge cylinder 222 into upper and lower parts. The part located on the upper side of the clearance notch 2221 is the first hinge portion 2222, and the part located on the lower side of the clearance notch 2221 is the second hinge portion 2223. The suspended end of the support arm 233 is located within the clearance notch 2221, and the hinge hole on the support arm 233 for accommodating the hinge shaft is coaxially arranged with the inner hole of the first hinge cylinder 222. The first hinge shaft 261 includes a shaft body 2611 and a baffle 2612 located at the upper end of the shaft body 2611. The baffle 2612 is fixedly connected to the upper end face of the first hinge cylinder 222 by screws.

[0065] Furthermore, a support bolt 262 is provided on the bottom surface of the first hinge shaft 261, coaxially arranged with the first hinge shaft 261. The support bolt 262 is threadedly connected to the first hinge shaft 261. A threaded hole that mates with the support bolt 262 is provided on the bottom surface of the first hinge shaft 261. A back-tightening nut 2621 is provided on the support bolt 262. By rotating the support bolt 262, the extension length of the support bolt 262 can be adjusted, thereby pressing the support bolt 262 against the ground to support the first hinge cylinder 222, improve structural strength, and prevent problems such as cracking at the connection between the first connecting plate 223 and the main housing 22.

[0066] Furthermore, a thrust ball bearing 28 is provided between the support arm 233 and the second hinge portion 2223. A first mounting groove is provided on the upper side of the second hinge portion 2223 to mate with one side mounting ring of the thrust ball bearing 28, and a second mounting groove is provided on the lower side of the support arm 233 to mate with the other side mounting ring of the thrust ball bearing 28. Preferably, the support arm 233 and the first hinge shaft 261 are in a clearance fit, both mounting rings of the thrust ball bearing 28 are in a clearance fit with the first hinge shaft 261, the first mounting groove is in an interference fit with one side mounting ring of the thrust ball bearing 28, and the second mounting groove is in an interference fit with the other side mounting ring of the thrust ball bearing 28. This not only significantly reduces frictional resistance during rotation but also prevents sliding friction between the support arm 233 and the first hinge shaft 261, thus avoiding wear.

[0067] Furthermore, the top plate 231 is provided with a support column 234 extending in the vertical direction, and the lower end of the support column 234 is provided with a traveling wheel 2341.

[0068] Furthermore, to improve the structural strength of the top clamping plate 231 itself and its connection with the support arm 233, the support arm 233 includes a second hinge cylinder 2331, the inner hole of which serves as the hinge hole for the support arm 233. A first vertical plate 2332 and a second vertical plate 2333 are arranged in parallel on the side wall of the second hinge cylinder 2331. Both the first vertical plate 2332 and the second vertical plate 2333 are parallel to the axis of the second hinge cylinder 2331, and the first vertical plate 2332 is located on the side of the second vertical plate 2333 closer to the main housing 22. The top-tightening plate 231 includes a circular portion. The left and right ends of the circular portion are respectively provided with a first end and a second end extending radially outward. The length of the second upright plate 2333 is greater than the length of the first upright plate 2332. The end face of the first end is fixedly connected to the side of the second upright plate 2333 facing the first upright plate 2332 by welding. The end face of the first upright plate 2332 is fixedly connected to the inner side of the first end (with the side facing the sealing plate 241 as the inner side) by welding. A plurality of reinforcing plates 2334 are provided between the first upright plate 2332 and the second upright plate 2333. Two transversely extending ribs 235 are provided on the outer side of the top-tightening plate 231 (with the side facing the sealing plate 241 as the inner side). The left end faces of the two ribs 235 are fixedly connected to the second upright plate 2333 by welding. A mounting plate 236 is provided between the two ribs 235 at the middle of the ribs 235, and the upper and lower ends of the mounting plate 236 are fixedly connected to the ribs 235 by welding. The housing of the screw jack 25 is fixedly connected to the mounting plate 236 by bolts, and the screw 251 of the screw jack 25 passes through the mounting plate 236 and the top clamping plate 231 and is fixedly connected to the sealing plate 241 in a detachable manner.

[0069] In one specific embodiment, the upper end face of the support column 234 abuts against the rib plate 235 located on the lower side, and the side of the support column 234 facing the top plate 231 is fixedly connected to the top plate 231 by welding.

[0070] Furthermore, the main housing 22 is also provided with a clamping component.

[0071] like Figure 5 and Figure 11As shown, the clamping component includes a lead screw 291 rotatably mounted above the main housing 22 and a drive motor 292 for driving the lead screw 291 to rotate. The lead screw 291 extends horizontally and is arranged perpendicular to the axis of the main housing 22. Two nuts 293 are provided on the lead screw 291. When the lead screw 291 rotates under the drive motor 292, the two nuts 293 move towards each other or away from each other. A first clamp 294 with an arc-shaped structure is provided below the open end of the main housing 22. First ear plates 2941 are respectively provided at both ends of the first clamp 294. Second clamps 295 with an arc-shaped structure are respectively provided on the left and right sides of the main housing 22. The two second clamps 295 are symmetrically arranged and correspond one-to-one with the two nuts 293. The lower end of the second clamp 295 is provided with a second ear plate 2951, and the second ear plate 2951 is hinged to the first ear plate 2941 via a third hinge shaft 296. The upper end of the second clamp 295 is provided with a third ear plate 2952, and the third ear plate 2952 is hinged to the corresponding nut 293 via a fourth hinge shaft 297. The inner surfaces of the first clamp 294 and the second clamp 295 are provided with slots.

[0072] like Figure 5 and Figure 12 As shown, when the two lead screws 293 move towards each other under the drive of the lead screw 291, the first clamp 294 and the second clamp 295 can retract and ultimately form a complete circular structure. At this time, the grooves of the first clamp 294 and the second clamp 295 form a complete annular groove, and as shown... Figure 6 As shown, the edge of the sealing plate 241 and the flange edge of the opening end of the main housing 22 are confined within the annular groove. When the two screw nuts 293 move in opposite directions under the drive of the screw 291, the first clamp 294 and the second clamp 295 can disperse and sink outward. When the first clamp 294 and the second clamp 295 are completely disengaged from the edge of the sealing plate 241, the sealing plate 241 can be opened by rotating the top clamping plate 231.

[0073] In one specific embodiment, a third connecting plate 225 is provided above the main housing 22 in this embodiment. Wing plates 2251 extending forward perpendicularly to the third connecting plate 225 are respectively provided at the left and right ends of the third connecting plate 225. A lead screw 291 is located between the two wing plates 2251, and both ends of the lead screw 291 are rotatably connected to the wing plates 2251 via bearing assemblies. A seat plate 226 extending forward perpendicularly to the second connecting plate 224 is provided on the second connecting plate 224. The drive motor 292 is fixedly mounted on the seat plate 226 by bolts, and the power output shaft of the drive motor 292 is connected to the lead screw 291 via a coupling 298.

[0074] Furthermore, the main housing 22 is provided with guide grooves 228 that correspond one-to-one with the third hinge shaft 296, and the guide grooves 228 extend in the vertical direction.

[0075] In one specific embodiment, a fourth connecting plate 227 is provided on the lower right side of the main housing 22, and a guide groove 228 that cooperates with the third hinge shaft 296 located on the right side is provided on the fourth connecting plate 227. A guide groove 228 that cooperates with the third hinge shaft 296 located on the left side is provided on the first connecting plate 223.

[0076] In one specific implementation, the central angles corresponding to the first clamp 294 and the second clamp 295 in this embodiment are both 120°.

[0077] Furthermore, stiffening plates are provided between the first connecting plate 223 and the main housing 22, between the second connecting plate 224 and the main housing 22, between the third connecting plate 225 and the main housing 22, and between the seat plate 226 and the second connecting plate 224.

[0078] When opening the test vessel 2, firstly, the drive motor 292 is activated, which in turn drives the two nuts 293 to move in opposite directions via the lead screw 291. This causes the first clamp 294 and the second clamp 295 to sink downwards until they disengage from the edge of the sealing plate 241. Then, the handwheel on the screw jack 25 is rotated, causing the sealing plate 241 to move closer to the top plate 231. Next, the locking nut 271 is loosened, and the tension rod 27 is rotated to the right, disengaging it from the locking notch 2311. Finally, the top plate 231 is rotated to the left. The method for closing the test vessel 2 is the reverse of the method for opening it, and will not be described further here.

[0079] Example 2

[0080] The clamping component is a hydraulic cylinder or a pneumatic cylinder, the cylinder body of which is detachably fixedly connected to the clamping plate 231, and the piston rod end passes through the clamping plate 231 and is connected to the sealing plate 241. The rest of the structure is the same as in Embodiment 1.

[0081] Other embodiments obtained by those skilled in the art based on the embodiments provided in this application by combining, splitting, or reorganizing the embodiments of this application do not exceed the protection scope of this application.

[0082] The above detailed embodiments have provided a detailed explanation of the purpose, technical solutions, and beneficial effects of the embodiments of this application. The above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. That is, any modifications, equivalent substitutions, improvements, etc., made on the basis of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A hydrogen compatibility testing device for an internal detector, characterized in that: Includes a hydrogen source (11), a test vessel (2), and a vacuum pump (3); The hydrogen source (11) is connected to the test vessel (2) through the first pipeline (41). The first pipeline (41) is equipped with a pressure regulating component, which includes a booster pump (51). The test vessel (2) is connected to the vacuum pump (3) through a second pipeline (42), and a first shut-off valve (61) is provided on the second pipeline (42).

2. The hydrogen compatibility testing device for an internal detector according to claim 1, characterized in that: The test vessel (2) is equipped with a first safety valve (211), a first pressure relief valve (212) and a first pressure gauge (213).

3. The hydrogen compatibility testing device for an internal detector according to claim 1, characterized in that: The pressure regulating component also includes a buffer tank (52), and the buffer tank (52) is located upstream of the booster pump (51).

4. The hydrogen compatibility testing device for an internal detector according to claim 1, characterized in that: It also includes a nitrogen source (12), and the nitrogen source (12) is connected to the test vessel (2) through a third pipeline (43).

5. The hydrogen compatibility testing device for an internal detector according to claim 4, characterized in that: The first pipeline (41) and the third pipeline (43) have a first common section and a second common section. The pressure regulating component is located between the first common section and the second common section, and the first common section is located upstream of the pressure regulating component. A second check valve (72) is provided on the first common section. A third check valve (73) and a second shut-off valve (62) are provided on the second common section. A third shut-off valve (63) is provided on the first pipeline (41) between the hydrogen source (11) and the first common section. A fourth shut-off valve (64) is provided on the first pipeline (41) between the first common section and the pressure regulating component. A fifth shut-off valve (65) is provided on the third pipeline (43) between the nitrogen source (12) and the first common section. A sixth shut-off valve (66) is provided on the third pipeline (43) between the first common section and the second common section.

6. The hydrogen compatibility testing device for an internal detector according to claim 1, characterized in that: The test vessel (2) includes a main shell (22), and the opening end of the main shell (22) is provided with a sealing component; The sealing component includes a top clamping plate (231), and the top clamping plate (231) is detachably connected to the main housing (22). A sealing plate (241) is provided on the side of the top clamping plate (231) near the main housing (22). The sealing plate (241) is slidably connected to the top clamping plate (231). A clamping member is provided between the sealing plate (241) and the top clamping plate (231). Under the pushing action of the clamping member, the sealing plate (241) can approach the main housing (22) and form a seal on the opening end of the main housing (22).

7. The hydrogen compatibility testing device for an internal detector according to claim 6, characterized in that: A first hinge cylinder (222) is provided on one side of the main housing (22), and a support arm (233) is provided on the top plate (231). The suspended end of the support arm (233) is rotatably connected to the first hinge cylinder (222) through a first hinge shaft (261). A tension rod (27) is hinged on the other side of the main housing (22), and a locking nut (271) is provided on the tension rod (27). A locking notch (2311) for accommodating the tension rod (27) is provided on the top plate (231).

8. The hydrogen compatibility testing device for an internal detector according to claim 7, characterized in that: The top plate (231) is provided with a support column (234), and the lower end of the support column (234) is provided with a traveling wheel (2341).

9. The hydrogen compatibility testing device for an internal detector according to claim 6, characterized in that: The main housing (22) is provided with a clamping component, which includes a lead screw (291) rotatably mounted above the main housing (22) and a drive motor (292) for driving the lead screw (291) to rotate. The lead screw (291) extends horizontally and is arranged perpendicular to the axis of the main housing (22). Two nuts (293) are provided on the lead screw (291). A first clamp (294) is provided below the open end of the main housing (22). The main housing (22) is provided with second clamps (295) on the left and right sides respectively. The two second clamps (295) are arranged symmetrically and correspond one-to-one with the two nuts (293). The lower end of the second clamp (295) is hinged to the first clamp (294) through the third hinge shaft (296). The upper end of the second clamp (295) is hinged to the corresponding nut (293). The inner surfaces of the first clamp (294) and the second clamp (295) are provided with grooves. When the two wire nuts (293) move toward each other, the first clamp (294) and the second clamp (295) retract, and the grooves of the first clamp (294) and the second clamp (295) form a complete annular groove. The edge of the sealing plate (241) and the flange edge of the opening end of the main housing (22) are restricted within the annular groove. When the two said wire nuts (293) move in opposite directions, the first clamp (294) and the second clamp (295) disperse outward.

10. The hydrogen compatibility testing device for an internal detector according to claim 9, characterized in that: The main housing (22) is provided with guide grooves (228) that correspond one-to-one with the third hinge shaft (296), and the guide grooves (228) extend in the vertical direction.

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