Pressure vessel sealing detection system and method

Abstract

The present invention relates to the technical field of pressure vessel sealing detection. The present invention discloses a pressure vessel sealing detection system and method, the system comprising: a support assembly, a water pressure detection assembly, a helium detection assembly, and a nitrogen filling assembly; the support assembly is connected to the pressure vessel, and the support assembly is used to support the pressure vessel and drive the pressure vessel to rotate circumferentially; the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly are respectively connected to the interior of the pressure vessel. The present invention can perform water pressure detection and / or helium detection on the pressure vessel by simultaneously arranging a water pressure detection assembly and a helium detection assembly, and the flexible detection method improves the comprehensiveness of the pressure vessel sealing detection and improves the accuracy of the pressure vessel sealing detection.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure vessel sealing detection, and in particular to a pressure vessel sealing detection system and method. Background Art

[0002] In recent years, the nuclear industry has entered a stage of vigorous development, and the demand for various new nuclear materials and nuclear equipment has continued to increase. In the process of testing materials and testing equipment, a large number of pressure vessels are needed, and the sealing performance of pressure vessels and the inspection of their sealing performance are particularly important.

[0003] The technologies for testing the sealing performance of pressure equipment generally include water pressure testing, vacuum helium leak detection, etc., but the above technologies have their own limitations. The water pressure test can only test the sealing performance of water and liquid media, but the sealing performance test effect on gas is not good; the conventional vacuum helium leak detection technology is not very effective for pressure vessels with large volumes, and it is time-consuming and labor-intensive. Therefore, finding a detection system that can perform comprehensive inspections on large pressure vessels is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of this, the present invention provides a pressure vessel sealing detection system and method.

[0005] Specifically, the following technical solutions are included:

[0006] In a first aspect, a pressure vessel sealing detection system is provided, comprising:

[0007] Support assembly, water pressure detection assembly, helium detection assembly, nitrogen filling assembly;

[0008] The support assembly is connected to the pressure vessel, and the support assembly is used to support the pressure vessel and drive the pressure vessel to rotate circumferentially;

[0009] The water pressure detection component, the helium detection component, and the nitrogen filling component are respectively connected to the interior of the pressure container.

[0010] Preferably, the support assembly includes a support base and a transition structure;

[0011] The support base is disposed at a first end of the pressure vessel, and the pressure vessel and the support base are rotatably connected;

[0012] The transition structure is disposed at the second end of the pressure vessel, and the pressure vessel and the transition structure are rotatably connected;

[0013] The first end of the pressure container and the second end of the pressure container are arranged opposite to each other;

[0014] The water pressure detection component, the helium detection component, and the nitrogen filling component are respectively connected to the transition structure.

[0015] Preferably, the support base comprises a tripod and a base, the base is arranged on the tripod, and the pressure vessel is arranged on the base;

[0016] The base includes a connection point, the tripod includes legs, and the connection point is connected to the legs;

[0017] There are multiple legs, and any one of the legs corresponds to multiple connection points. The distances between the multiple connection points and the vertical axis of the base are different.

[0018] Preferably, the support base further comprises a clamping portion, at least two of the clamping portions are provided, and the at least two clamping portions are evenly arranged circumferentially along the vertical axis of the pressure vessel.

[0019] Preferably, the clamping portion includes a first driving member, a bracket, a transmission tube, and a roller. The transmission tube is arranged at the end of the bracket, the transmission tube is connected to the bracket, the first end of the transmission tube is connected to the roller, the roller and the pressure container are abutted against each other, the first driving member is arranged on the transmission tube, and the driving shaft of the first driving member is transmission-connected to the roller.

[0020] Preferably, the transition structure includes a transition pipe and a mounting flange;

[0021] The first end of the transition pipe is rotatably connected to the pressure vessel, the mounting flange is connected to the second end of the transition pipe, and the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly are respectively connected to the mounting flange.

[0022] Preferably, the helium detection assembly comprises a through shaft, a helium nozzle, and a second driving member;

[0023] One end of the through-shaft extends into the pressure vessel, the helium spray head is arranged at the end of the through-shaft located in the pressure vessel, and the second driving member is arranged on the through-shaft, and the second driving member is used to drive the helium spray head to rotate relative to the through-shaft.

[0024] Preferably, the helium detection assembly further includes a guide rail, a support rod, a helium probe, and a third driving member;

[0025] The guide rails are arranged circumferentially around the pressure vessel;

[0026] The helium probe is arranged on the support rod, and the third driving member is used to drive the support rod to drive the helium probe to move along the guide rail.

[0027] Preferably, the helium detection assembly further includes a fourth driving member;

[0028] The fourth driving member is arranged on the support rod, and is used to drive the helium probe to move along the axis extension direction of the support rod, and is also used to adjust the distance between the helium probe and the pressure vessel.

[0029] In a second aspect, a pressure vessel sealing detection method is provided, using the pressure vessel sealing detection system as described in the first aspect, the method comprising:

[0030] Installing a pressure vessel on the support assembly, connecting the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly;

[0031] Controlling the water pressure detection component to perform water pressure detection on the pressure vessel and recording water pressure detection information;

[0032] Emptying the pressure vessel, and controlling the nitrogen filling assembly to fill the pressure vessel with nitrogen;

[0033] Control the helium detection component to perform helium detection on the pressure vessel and record the helium detection information.

[0034] The beneficial effects of the technical solution provided by the present invention include at least:

[0035] The present invention can perform water pressure detection and / or helium detection on the pressure vessel by simultaneously arranging a water pressure detection component and a helium detection component. The flexible detection method improves the comprehensiveness of the pressure vessel sealing detection and improves the accuracy of the pressure vessel sealing detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 It is a schematic diagram of the principle structure of an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the support base structure of an embodiment of the present invention;

[0039] Figure 3 A schematic diagram of the structure of a helium injection assembly according to an embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the installation structure of a helium probe according to an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of a second transmission structure according to an embodiment of the present invention.

[0042] The reference numerals in the figures represent respectively:

[0043] 1-helium cylinder; 2-nitrogen generator; 3-high pressure pump; 4-helium driver; 5-helium injection assembly; 51-helium nozzle; 52-through shaft; 53-sealing flange; 54-second drive member; 6-water pressure through member; 7-nitrogen through member; 8-helium probe assembly; 81-guide rail; 82-support rod; 83-probe fixing rod; 831-probe drive shaft; 832-clutch; 833-drive gear; 834-intermediate transmission shaft; 835-coupling; 84-third drive member; 85-fourth drive member; 86-helium probe; 9-support base; 91-bracket; 92-first drive member; 93-transmission pipe; 94-roller; 95-base; 96-tripod; 10-boosting pump; 11-water tank; 12-transition structure; 13-pressure vessel.

[0044] The above drawings have shown a clear embodiment of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Before further describing the embodiments of the present invention in detail, the directional nouns involved in the embodiments of the present invention, such as "upper part", "lower part", "side part", etc., are Figure 1 The directions shown in the figure are for reference only and do not limit the protection scope of the present invention.

[0047] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0048] like Figure 1As shown, the present application provides a pressure vessel 13 sealing detection system, comprising: a support assembly, a water pressure detection assembly, a helium detection assembly, and a nitrogen filling assembly; the support assembly is connected to the pressure vessel 13, and the support assembly is used to support the pressure vessel 13 and drive the pressure vessel 13 to rotate circumferentially; the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly are respectively connected to the interior of the pressure vessel 13.

[0049] Specifically, the water pressure detection component is used to inject water into the pressure vessel 13 to perform a water pressure detection on the pressure vessel 13. The helium detection component is used to inject helium into the pressure vessel 13 to perform a helium detection on the pressure vessel 13. The nitrogen filling component is used to inject nitrogen into the pressure vessel 13 to exhaust the water and air in the pressure vessel 13. The present invention can perform a water pressure detection and / or a helium detection on the pressure vessel 13 by simultaneously arranging a water pressure detection component and a helium detection component. The flexible detection method improves the comprehensiveness of the sealing detection of the pressure vessel 13 and improves the accuracy of the sealing detection of the pressure vessel 13.

[0050] like Figure 1 and Figure 2 As shown, the support assembly includes a support base 9 and a transition structure 12, the support base 9 is arranged at the first end of the pressure vessel 13, and the pressure vessel 13 and the support base 9 are rotatably connected; the transition structure 12 is arranged at the second end of the pressure vessel 13, and the pressure vessel 13 and the transition structure 12 are rotatably connected; the first end of the pressure vessel 13 and the second end of the pressure vessel 13 are arranged opposite to each other; the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly are respectively connected to the transition structure 12.

[0051] Specifically, Figure 1 As shown, the first end of the pressure vessel 13 is the lower end of the pressure vessel 13, and the second end of the pressure vessel 13 is the upper end of the pressure vessel 13. The first end of the pressure vessel 13 is connected to the support base 9 through a bearing, and the second end of the pressure vessel 13 is connected to the transition structure 12 through a bearing. The arrangement of the bearing enables the pressure vessel 13 to rotate circumferentially around the vertical axis of the pressure vessel 13. The rotation of the pressure vessel 13 improves the convenience of sealing detection, especially the detection of welding sealing.

[0052] like Figure 1 and Figure 2 As shown, the support base 9 includes a tripod 96 and a base 95, the base 95 is arranged on the tripod 96, and the pressure vessel 13 is arranged on the base 95. The base 95 includes a connection point, and the tripod includes a leg, and the leg is connected to the connection point. There are multiple legs, and any leg corresponds to multiple connection points, and the distances between the multiple connection points and the vertical axis of the base 95 are different.

[0053] Specifically, the tripod 96 includes three legs, and the number of legs can be set according to demand. One leg corresponds to multiple connection points, and the distances between the multiple connection points and the vertical axis of the base 95 are different, so that one leg can be connected to different connection points, so that the angle between the axis of the leg and the vertical axis of the tripod 96 can be adjusted, and the adjustment range of the angle between the axis of the leg of the tripod 96 and the vertical plane is 45°-75°. It can be understood that all the legs need to be adjusted synchronously to ensure the balance and stability of the tripod 96.

[0054] Specifically, the upper surface of the base 95 is an arc-shaped surface, and the upper surface of the base 95 matches the shape of the bottom surface of the pressure vessel 13, so that the pressure vessel 13 and the base 95 are completely fitted after installation, ensuring the installation stability of the pressure vessel 13 on the base 95. Preferably, the pressure vessel 13 and the base 95 are connected by a bearing.

[0055] Preferably, Figure 1 and Figure 2 As shown, the support base 9 also includes a clamping portion, at least two of which are arranged evenly along the circumference of the vertical axis of the pressure vessel 13. At least two clamping portions are used to clamp the pressure vessel 13, fix the pressure vessel 13, and prevent the pressure vessel 13 from rotating or tipping over. In this embodiment, two clamping portions are arranged, and the two clamping portions are arranged symmetrically along the vertical central axis of the pressure vessel 13. In other embodiments, multiple clamping portions may be arranged, and the multiple clamping portions are evenly distributed along the circumference of the vertical axis of the pressure vessel 13.

[0056] Preferably, Figure 1 and Figure 2 As shown, the clamping portion includes a first driving member 92, a bracket 91, a transmission tube 93, and a roller 94. The transmission tube 93 is arranged at the end of the bracket 91, the transmission tube 93 is connected to the bracket 91, the first end of the transmission tube 93 is connected to the roller 94, the roller 94 and the pressure container 13 are abutted, the first driving member 92 is arranged on the transmission tube 93, and the driving shaft of the first driving member 92 is connected to the roller 94 in a transmission manner.

[0057] Specifically, the lower end of the bracket 91 is arranged on a fixed carrier, and the bracket 91 is arranged on one side of the pressure vessel 13. A transmission pipe 93 is arranged at the upper end of the bracket 91, and the transmission pipe 93 and the bracket 91 are detachably connected. The axis of the transmission pipe 93 and the axis of the bracket 91 are arranged perpendicularly, and the transmission pipe 93 can move along the extension direction of the axis of the transmission pipe 93 to adapt to pressure vessels 13 of different specifications. With the intersection of the axis of the bracket 91 and the axis of the transmission pipe 93 as the zero point, and the movement in the direction close to the pressure vessel 13 as the positive direction, the movement range of the transmission pipe 93 along the extension direction of the axis of the transmission pipe 93 is 0-5m.

[0058] Specifically, Figure 1 and Figure 2 As shown, the first driving member 92 is a servo motor. The first driving member 92 is disposed on the transmission tube 93, and the axis of the driving shaft of the first driving member 92 is coaxially disposed with the axis of the transmission tube 93, or the axis of the driving shaft of the first driving member 92 is perpendicularly disposed with the axis of the transmission tube 93. The first end of the transmission tube 93 is an end extending toward the pressure vessel 13, and the roller 94 is disposed at the end of the transmission tube 93 extending toward the pressure vessel 13, and the axis of the roller 94 is parallel to the axis of the pressure vessel 13. The first driving member 92 and the roller 94 are connected via a first transmission structure, and the first driving member 92 is used to drive the roller 94 to rotate, so as to drive the pressure vessel 13 to rotate circumferentially around its axis. As shown Figure 2 As shown, the axis of the driving shaft of the first driving member 92 is coaxially arranged with the axis of the transmission tube 93 , the first transmission structure is a gear transmission, the gear is a 45° bevel gear, and the two bevel gears are meshed to realize the driving of the roller 94 by the first driving member 92 .

[0059] Specifically, Figure 1 and Figure 2 As shown, the lower ends of the two brackets 91 are connected through a bottom plate, and the bottom plate is connected to a fixed carrier, which increases the contact area with the fixed carrier and improves the installation stability of the brackets 91. The tripod 96 is arranged at the center of the bottom plate.

[0060] Specifically, the surface of the roller 94 is wrapped with a flexible rough material to increase the friction between the roller 94 and the pressure container 13 .

[0061] Preferably, Figure 1 As shown, the transition structure 12 includes a transition pipe and a mounting flange. The first end of the transition pipe is rotatably connected to the pressure vessel 13, the mounting flange is connected to the second end of the transition pipe, and the water pressure detection component, the helium detection component, and the nitrogen filling component are respectively connected to the mounting flange.

[0062] The first end of the transition pipe is the lower end of the transition pipe, and the second end of the transition pipe is the upper end of the transition pipe. The first end of the transition pipe is connected to the upper opening of the pressure vessel 13 through a bearing to ensure the smoothness and stability of the rotation of the pressure vessel 13. The mounting flange is connected to the second end of the transition pipe, and the transition pipe does not rotate with the rotation of the pressure vessel 13. The water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly are respectively connected to the mounting flange.

[0063] Specifically, Figure 1As shown, the water pressure detection assembly includes a booster pump 10, a water tank 11, and a water pressure penetration 6. The water pressure penetration 6 is installed on the mounting flange. The water in the water tank 11 is pressurized by the booster pump 10 and then injected into the pressure vessel 13 through the water pressure penetration 6. The nitrogen filling assembly includes a nitrogen generator 2, a high-pressure pump 3, and a nitrogen penetration 7. The nitrogen penetration 7 is installed on the mounting flange. The nitrogen produced by the nitrogen generator 2 is injected into the pressure vessel 13 through the high-pressure pump 3 through the nitrogen penetration 7. The helium detection assembly includes a helium cylinder 1, a helium driving machine 4, and a helium injection assembly 5. The helium injection assembly 5 is arranged on the mounting flange. The helium in the helium cylinder 1 is injected into the pressure vessel 13 through the helium driving machine 4 through the helium injection assembly 5. It can be understood that the water pressure penetration 6 and the mounting flange, and the nitrogen penetration 7 and the mounting flange are sealed.

[0064] like Figure 1 and Figure 3 As shown, the helium detection assembly includes a helium injection assembly 5 and a helium probe assembly 8. The helium injection assembly 5 includes a through shaft 52, a helium spray head 51, and a second driving member 54; one end of the through shaft 52 extends into the pressure vessel 13, the helium spray head 51 is arranged at one end of the through shaft 52 located in the pressure vessel 13, and the second driving member 54 is arranged on the through shaft 52, and the second driving member 54 is used to drive the helium spray head 51 to rotate relative to the through shaft 52.

[0065] Specifically, the through shaft 52 is a hollow structure, the through shaft 52 is mounted on the mounting flange, and the helium delivery pipe runs through the through shaft 52 and is connected to the helium nozzle 51. It can be understood that the helium delivery pipe and the through shaft 52, and the through shaft 52 and the mounting flange are sealed. The second driving member 54 is a servo motor.

[0066] like Figure 3 As shown, the helium injection assembly 5 includes a sealing flange 53, which is sleeved on the through shaft 52, and the sealing flange 53 is fixedly connected to the mounting flange.

[0067] Specifically, the second driving member 54 is used to adjust the angle between the axis of the helium nozzle 51 and the axis of the through-shaft 52 , and the adjustment range is 0-150°.

[0068] Specifically, the through shaft 52 is a telescopic structure, and the extension length of the through shaft 52 into the pressure vessel 13 is adjustable within a range of 0-6 m.

[0069] like Figure 1 and Figure 4 As shown, the helium probe assembly 8 further includes a guide rail 81, a support rod 82, a helium probe 86, and a third driving member 84. The guide rail 81 is arranged circumferentially around the pressure vessel 13; the helium probe 86 is arranged on the support rod 82, and the third driving member 84 is used to drive the support rod 82 to drive the helium probe 86 to move along the guide rail 81.

[0070] Specifically, the guide rail 81 is a circular track, and the tripod 96 is arranged at the center of the guide rail 81. The third driving member 84 is a servo motor, and a roller 94 is arranged at the bottom of the support rod 82. The servo motor drives the support rod 82 to run along the guide rail 81. The helium probe 86 is arranged on the upper part of the support rod 82. Driven by the support rod 82, the helium probe 86 can detect the circumferential wall surface of the pressure vessel 13. Preferably, the guide rail 81 is arranged outside the bracket 91 to prevent the bracket 91 from hindering the movement of the support rod 82.

[0071] Specifically, the helium probe 86 can detect the helium at the outer wall of the pressure vessel 13, and the monitoring concentration is less than 1×10 -9 Pa·m 3 / s.

[0072] Preferably, the helium detection assembly also includes a fourth driving member 85; the fourth driving member 85 is arranged on the support rod 82, and the fourth driving member 85 is used to drive the helium probe 86 to move along the axial extension direction of the support rod 82, and is also used to adjust the distance between the helium probe 86 and the pressure vessel 13.

[0073] Specifically, the helium probe 86 is disposed on the probe fixing rod 83 , the axis of the probe fixing rod 83 and the axis of the support rod 82 are disposed perpendicularly, and the probe fixing rod 83 and the support rod 82 are connected.

[0074] In one embodiment, the fourth driving member 85 is an XY linear driving motor, and the fourth driving member 85 is disposed on the support rod 82. The fourth driving member 85 is connected to the probe fixing rod 83, and the fourth driving member 85 drives the probe fixing rod 83 to move along the axis extension direction of the support rod 82, and the moving range is 0-8m, or the fourth driving member 85 drives the probe fixing rod 83 to move away from or close to the pressure vessel 13, and the moving range is 0-5m.

[0075] In another embodiment, the probe fixing rod 83 and the support rod 82 are connected by a second transmission structure to realize the movement of the probe fixing rod 83 along the length direction of the support rod 82 and along the extension direction of the axis of the probe fixing rod 83. In this embodiment, the up-and-down movement and horizontal movement of the probe fixing rod 83 are realized by the second transmission structure.

[0076] The second transmission structure includes a housing, and the housing is provided with Figure 5The coupling 835, the intermediate transmission shaft 834, the probe drive shaft 831, the clutch 832, and the drive gear 833 are shown. The left end of the intermediate transmission shaft 834 is provided with an external spline, and the inner side of the drive gear 833 is provided with an internal spline. The intermediate transmission shaft 834 and the drive gear 833 are meshed and driven by the external spline and the internal spline. The gear and the rack on the support rod 82 are meshed and driven. The left end of the intermediate transmission shaft 834 and the probe drive shaft 831 are connected through the clutch 832. The right end of the intermediate transmission shaft 834 is connected to the coupling 835. The probe drive shaft 831 is connected to the probe fixing rod 83. The coupling 835 is connected to the drive shaft of the fourth driving member 85. The rack is arranged along the length direction of the support rod 82. The support rod 82 runs through the shell, and the shell can slide relative to the support rod 82. The probe driving shaft 831 is provided with an external thread. The probe fixing rod 83 is a cylindrical structure. The inner wall of the probe fixing rod 83 is provided with an internal thread. The probe fixing rod 83 is sleeved on the probe driving shaft 831. The probe fixing rod 83 and the probe driving shaft 831 are threadedly connected.

[0077] During operation, the clutch 832 is controlled to be disengaged, the external spline on the intermediate transmission shaft 834 is meshed with the internal spline of the driving gear 833, and the fourth driving member 85 drives the driving gear 833 to perform lifting and lowering movements along the extension direction of the rack on the support rod 82 through the intermediate transmission shaft 834. At this time, the clutch 832 is separated, and the probe driving shaft 831 has no movement in the horizontal direction; the clutch 832 is controlled to be closed, the external spline on the intermediate transmission shaft 834 is separated from the internal spline of the driving gear 833, and the driving gear 833 is meshed with the rack on the support rod 82 but has no movement. At this time, the fourth driving member 85 drives the probe driving shaft 831 to rotate through the intermediate transmission shaft 834, thereby driving the probe fixing rod 83 to move along the extension direction of the axis of the probe fixing rod 83.

[0078] The fourth driving member 85 is a servo motor, which is arranged on a motor fixing rod, which is fixedly connected to the housing, and the motor fixing rod is a hollow structure, and the driving shaft of the fourth driving motor extends into the hollow structure of the motor fixing rod and is connected to the coupling 835. The coupling 835 is a telescopic sleeve coupling 835, which is connected to the housing through a bearing.

[0079] This embodiment also provides a method for detecting the sealing performance of a pressure vessel 13, using the above-mentioned system for detecting the sealing performance of the pressure vessel 13, the method comprising:

[0080] Install the pressure vessel 13 on the support assembly, and connect the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly;

[0081] The water pressure detection component is controlled to perform water pressure detection on the pressure container 13 and record water pressure detection information; the water pressure detection information includes the pressure in the pressure container 13.

[0082] Emptying the pressure vessel 13, and controlling the nitrogen filling assembly to fill the pressure vessel 13 with nitrogen;

[0083] The helium detection component is controlled to perform helium detection on the pressure vessel 13 and record the helium detection information. The helium detection information is the helium leakage rate.

[0084] As a specific embodiment, the method for testing the sealing performance of the pressure container 13 is as follows:

[0085] Step 1: Install the pressure vessel 13 on the support assembly by means of a hoisting device, with its bottom seated on the arc-shaped base 95, adjust the distance between the transmission tube 93 and the pressure vessel 13, and control the first driving member 92 to drive the roller 94 to be close to the outer wall of the pressure vessel 13;

[0086] Step 2: Install the mounting flange with the helium injection assembly 5, the water pressure penetration piece 6 and the nitrogen penetration piece 7 on the upper flange of the transition pipe and seal it therewith;

[0087] Step 3: Start the booster pump 10, add the water in the water tank 11 to the pressure vessel 13 and pressurize it to the water pressure test pressure. After maintaining the pressure for 30 minutes, record the water pressure detection information. If the pressure fluctuation in the pressure vessel 13 is within the preset range, drain the water in the pressure vessel 13;

[0088] Step 4: Start the high-pressure pump 3 to charge the nitrogen in the nitrogen generator 2 into the pressure vessel 13. When the internal pressure reaches 0.3-0.5 MPa, stop pressurizing and close the valve of the nitrogen pipeline.

[0089] Step 5: drive the second driving member 54 to make the helium nozzle 51 swing up and down, and adjust the length of the through shaft 52 to make the helium nozzle 51 at the welding position, control the third driving member 84 to make the helium probe 86 rotate around the pressure vessel 13, so that the helium probe 86 is at the welding position, and control the fourth driving member 85 to make the helium probe 86 approach the helium nozzle 51, so that the helium nozzle 51 and the helium probe 86 are respectively located inside and outside the pressure vessel 13;

[0090] Step 6: Start the helium driving machine 4 to eject the helium in the helium cylinder 1 from the helium nozzle 51, and at the same time the helium probe 86 monitors whether there is helium leakage;

[0091] Step 7: Start the first driving member 92 to rotate the roller 94 and then drive the pressure vessel 13 to rotate, and detect the annular weld of the pressure vessel 13 through the helium nozzle 51 and the helium probe 86;

[0092] Step 8: Repeat the above steps 5 to 7 to detect all welds. If the helium leakage rate detected by the helium probe 86 is lower than the preset range, it means that the sealing performance of the pressure vessel 13 is good.

[0093] Furthermore, for pressure vessels 13 of different specifications, one of water pressure leak detection and helium leak detection, or a combination of the two, is selected.

[0094] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0095] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only.

[0096] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure vessel sealing detection system, characterized in that: Include: Support assembly, water pressure detection assembly, helium detection assembly, nitrogen filling assembly; The support assembly is connected to the pressure vessel, and the support assembly is used to support the pressure vessel and drive the pressure vessel to rotate circumferentially; The water pressure detection component, the helium detection component, and the nitrogen filling component are respectively connected to the interior of the pressure vessel; The support assembly comprises a support base and a transition structure; the support base is arranged at the first end of the pressure vessel, and the pressure vessel and the support base are rotatably connected; the transition structure is arranged at the second end of the pressure vessel, and the pressure vessel and the transition structure are rotatably connected; the first end of the pressure vessel and the second end of the pressure vessel are arranged opposite to each other; the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly are respectively connected to the transition structure; The transition structure comprises a transition pipe and a mounting flange; the first end of the transition pipe is rotatably connected to the pressure vessel, the mounting flange is connected to the second end of the transition pipe, the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly are respectively connected to the mounting flange; the water pressure detection assembly comprises a booster pump, a water tank, and a water pressure penetration piece, the water pressure penetration piece is installed on the mounting flange, and the water in the water tank is pressurized by the booster pump and then injected into the pressure vessel through the water pressure penetration piece; The helium detection assembly includes a through shaft, a helium nozzle, and a second driving member; One end of the through-shaft extends into the pressure vessel, the helium spray head is arranged at the end of the through-shaft located in the pressure vessel, and the second driving member is arranged on the through-shaft, and the second driving member is used to drive the helium spray head to rotate relative to the through-shaft.

2. A pressure vessel sealing detection system according to claim 1, characterized in that: The support base comprises a tripod and a base, the base is arranged on the tripod, and the pressure vessel is arranged on the base; The base includes a connection point, the tripod includes legs, and the connection point is connected to the legs; There are multiple legs, and any one of the legs corresponds to multiple connection points. The distances between the multiple connection points and the vertical axis of the base are different.

3. A pressure vessel sealing detection system according to claim 1, characterized in that: The support base further includes a clamping portion, at least two of which are provided, and the at least two clamping portions are evenly arranged circumferentially along the vertical axis of the pressure vessel.

4. A pressure vessel sealing detection system according to claim 3, characterized in that: The clamping part includes a first driving member, a bracket, a transmission tube, and a roller. The transmission tube is arranged at the end of the bracket, the transmission tube is connected to the bracket, the first end of the transmission tube is connected to the roller, the roller and the pressure container are abutted, the first driving member is arranged on the transmission tube, and the driving shaft of the first driving member is connected to the roller in a transmission manner.

5. A pressure vessel sealing detection system according to claim 1, characterized in that: The helium detection assembly also includes a guide rail, a support rod, a helium probe, and a third driving member; The guide rails are arranged circumferentially around the pressure vessel; The helium probe is arranged on the support rod, and the third driving member is used to drive the support rod to drive the helium probe to move along the guide rail.

6. A pressure vessel sealing detection system according to claim 5, characterized in that: The helium detection assembly further includes a fourth driving member; The fourth driving member is arranged on the support rod, and is used to drive the helium probe to move along the axis extension direction of the support rod, and is also used to adjust the distance between the helium probe and the pressure vessel.

7. A pressure vessel sealing detection method, characterized in that: Using the pressure vessel sealing detection system according to any one of claims 1 to 6, the method comprises: Installing a pressure vessel on the support assembly, connecting the water pressure detection assembly, the helium detection assembly, and the nitrogen filling assembly; Controlling the water pressure detection component to perform water pressure detection on the pressure vessel and recording water pressure detection information; Emptying the pressure vessel, and controlling the nitrogen filling assembly to fill the pressure vessel with nitrogen; Control the helium detection component to perform helium detection on the pressure vessel and record the helium detection information.

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