Pressure vessel leakage detection device

Abstract

The invention relates to the technical field of pressure vessel detection, in particular to a pressure vessel leakage detection device which comprises a transversely-arranged detection barrel, a leakage detection mechanism suitable for sealing detection of various types of pressure vessels is arranged on the detection barrel, and the leakage detection mechanism comprises movable ring bodies arranged at the two ends of the inner side of the detection barrel in a sliding mode respectively. The movable ring body is fixed in the middle of the inner side of the detection barrel, the detector bodies are fixedly installed on the movable ring body and the limiting ring body respectively and arranged in a circumferential array mode, and a positioning assembly capable of limiting the positions of pressure containers of different sizes is arranged on the inner side of the detection barrel. According to the invention, the detection device can detect the sealing performance of containers with different sizes more conveniently, the accuracy of the detection result of the detection device is improved, the application range of the detection device is expanded, the situation that the detection result is easy to have errors when the pressure containers with different sizes are detected by the existing detection device is avoided, and the detection efficiency is improved. And the working efficiency of the detection device is improved.

Description

Technical Field

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

[0002] A pressure vessel refers to a closed device that contains gas or liquid and bears a certain pressure. After the pressure vessel is produced, the sealing of the welded pipe body on the pressure vessel needs to be tested to ensure the safety of the pressure vessel. At present, the main method is to introduce gas into the sealed pressure vessel, and then use the detector to detect the position where the pipe body is welded on the pressure vessel to see if there is any leakage. At present, the position of the pipe body on different containers is different. This requires adjusting the position of the detection instrument according to the pipe body on the container when detecting the sealing. However, this will not only make the detection process very inconvenient, but also easily cause errors in the detection results, thereby affecting the accuracy of the detection results, and cannot meet the needs of pressure vessel detection. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a pressure vessel leakage detection device, which solves the problem that the process of detecting the sealing of a pressure vessel in the prior art is not only very inconvenient but also easily causes errors in the detection results.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A pressure vessel leakage detection device comprises a transversely placed detection barrel, on which a leak detection mechanism suitable for sealing detection of various types of pressure vessels is arranged, the leak detection mechanism comprises movable ring bodies respectively slidably arranged at the two ends of the inner side of the detection barrel, a limiting ring body fixed at the middle part of the inner side of the detection barrel, and a plurality of detector bodies arranged in a circumferential array and respectively fixedly mounted on the movable ring body and the limiting ring body, a positioning assembly capable of limiting the position of pressure vessels of different sizes is arranged on the inner side of the detection barrel, and a transmission assembly for synchronously driving two movable ring bodies to move toward the middle and driving the positioning assembly to operate is arranged on the outer side of the detection barrel.

[0006] As a further optimization scheme of the present invention, the transmission assembly includes a plurality of strip slide grooves arranged in a circumferential array on the surfaces of both ends of the detection barrel, and a connecting block slidably arranged on the inner side of the strip slide groove and fixed to the movable ring body. A bidirectional screw is arranged between the connecting blocks at both ends of the detection barrel, and the two ends of the bidirectional screw respectively pass through the two connecting blocks and are threadedly connected thereto.

[0007] As a further optimization scheme of the present invention, a limit shell is fixedly provided on the outer side of the detection barrel, an inner gear ring is rotatably provided in the middle part of the inner side of the limit shell, a limit buckle fixed to the limit shell is slidably provided on the inner gear ring, a transmission gear meshing with the inner gear ring is fixedly provided on the bidirectional screw, a servo motor is fixed on one side of the outer side of the detection barrel, and a driving gear meshing with the inner gear ring is fixed on the output shaft of the servo motor.

[0008] As a further optimization scheme of the present invention, the positioning assembly includes a plurality of threaded vertical shafts distributed in a circumferential array and arranged on both sides of the limiting ring body, and the number of the threaded vertical shafts is the same as that of the connecting blocks, and the other end of the threaded vertical shaft is threadedly provided with a threaded vertical tube.

[0009] As a further optimization scheme of the present invention, one end of the threaded vertical shaft passes through the detection barrel and is fixedly provided with a bevel gear 1, and one side of the bevel gear 1 is meshed with a bevel gear 2 fixed with the bidirectional screw.

[0010] As a further optimization scheme of the present invention, a connecting frame fixed to the detection barrel is slidably provided at one end of the threaded vertical tube, a limit spring is fixedly provided at the other end of the threaded vertical tube, and a limit hemisphere is detachably provided at one end of the limit spring.

[0011] As a further optimization scheme of the present invention, the leak detection mechanism also includes a guide assembly arranged on the inner side of the detection barrel and used to allow pressure vessels of different sizes to enter the detection barrel, and the guide assembly includes support rails arranged on both sides of the bottom of the detection barrel, and a plurality of equidistantly distributed guide wheels are arranged on the inner side of the support rails.

[0012] As a further optimization scheme of the present invention, the guide wheel is in contact with the outer side wall of the pressure container, and a limiting shaft is fixed at the axis of the guide wheel and rotates with the detection barrel through a bearing.

[0013] As a further optimization scheme of the present invention, a plurality of support tubes are arranged at the bottom of the support guide rail, which are evenly distributed and detachably connected to the detection barrel. A return spring is fixedly arranged on the inner side of the support tube, and a movable connecting rod is fixed at one end of the return spring, which slides in the support tube and has one end fixed to the support guide rail.

[0014] By means of the above technical solution, the present invention provides a pressure vessel leakage detection device, which has at least the following beneficial effects compared with the prior art:

[0015] 1. The present invention is suitable for sealing detection of various types of pressure vessels by arranging a leak detection mechanism. The pressure vessel to be detected is introduced into the detection barrel through the guide component, and then the two movable rings are driven to a suitable position by the transmission component. At the same time, the positioning component positions the pressure vessel, and then the sealing detection is performed. This is conducive to making the detection device more convenient for sealing detection of containers of different sizes, improving the accuracy of the detection result of the detection device, expanding the application scope of the detection device, and avoiding the situation that the existing detection device is prone to errors in the detection results when detecting pressure vessels of different sizes.

[0016] 2. The present invention defines the positions of pressure vessels of different sizes by setting a positioning assembly. While the bidirectional screw rotates, the transmission structure included in the positioning assembly drives the limiting hemisphere to contact the outer wall of the pressure vessel, so as to position the pressure vessel. This helps to make the pressure vessel more stable during detection, speeds up the detection speed of the detection device, and can complete the detection work of the pressure vessel in a short time, thereby improving the working efficiency of the detection device.

[0017] 3. The present invention can make pressure vessels of different sizes enter the detection barrel by setting a guide component. The pressure vessel is sent into the detection barrel by a conveyor. The bottom side wall of the pressure vessel contacts the guide wheel, making it more convenient for the pressure vessel to enter the detection barrel. The operation is relatively simple and the detection work can be completed without professional technicians, thereby reducing the detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a front perspective cross-sectional view of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the leakage detection mechanism of the present invention;

[0022] Figure 4 It is a partial structural diagram of the positioning component of the present invention;

[0023] Figure 5 It is a partial exploded view of the guide assembly of the present invention;

[0024] Figure 6 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0025] In the figure: 1. Detection barrel;

[0026] 2. Leakage detection mechanism; 21. Movable ring body; 22. Limiting ring body; 23. Detection body;

[0027] 24. Transmission assembly; 241. Strip slide; 242. Connecting block; 243. Bidirectional screw; 244. Limit housing; 245. Internal gear ring; 246. Transmission gear;

[0028] 25. Positioning assembly; 251. Threaded vertical shaft; 252. Bevel gear 1; 253. Bevel gear 2; 254. Threaded vertical pipe; 255. Connecting frame; 256. Limit spring; 257. Limit hemisphere;

[0029] 26. Guide assembly; 261. Support guide rail; 262. Guide wheel; 263. Limiting shaft; 264. Support tube; 265. Return spring; 266. Movable connecting rod. DETAILED DESCRIPTION

[0030] 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 only 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.

[0031] First embodiment

[0032] Pressure vessels are widely used in the fields of chemical industry, petroleum, energy, etc. However, during the processing, pressure vessels may not be completely sealed, which may easily cause leakage during use, which will not only lead to waste of resources, but also may cause safety accidents. Therefore, it is of great significance to perform leakage detection on pressure vessels. Since the existing detection devices are inconvenient for detecting pressure vessels of different models and sizes, it is easy to cause errors in the detection results. In order to make it more convenient for the detection device to perform sealing detection on different types of pressure vessels and improve the accuracy of the detection results of the detection device, reference is made to Figure 1 - Figure 6The present embodiment provides a pressure vessel leakage detection device, which is composed of a horizontally placed detection barrel 1 and a leak detection mechanism 2. The leak detection mechanism 2 is arranged on the detection barrel 1 and is suitable for sealing detection of various types of pressure vessels. The leak detection mechanism 2 includes movable ring bodies 21 respectively slidably arranged at the two ends of the inner side of the detection barrel 1, a limiting ring body 22 fixed at the middle part of the inner side of the detection barrel 1, and a plurality of detector bodies 23 arranged in a circumferential array and respectively fixedly mounted on the movable ring body 21 and the limiting ring body 22. The detector body 23 belongs to the prior art and is common knowledge to those skilled in the art. Its internal structure is not described in detail in this scheme. The detector body 23 on the limiting ring body 22 performs sealing detection on the pipe body welded in the middle part of the pressure vessel, and the detector bodies 23 on the two movable ring bodies 21 respectively perform sealing detection on the pipe body welded at the two ends of the pressure vessel.

[0033] Since the positions of the tube bodies at both ends of different types of pressure vessels are not the same, it is necessary to adjust the position of the detection instrument according to the tube body thereon when detecting the sealing of the container, which makes the detection process more troublesome and easily causes inaccurate detection results. In order to be applicable to the sealing detection of various types of pressure vessels, expand the application range of the detection device, and make the detection device more accurate in detecting pressure vessels, a transmission component 24 is provided on the outer side of the detection barrel 1 for synchronously driving the two movable ring bodies 21 to move toward the middle and driving the positioning component 25 to operate. The transmission component 24 includes four strip slide grooves 241 arranged in a circumferential array on the surfaces of both ends of the detection barrel 1, and a connecting block 242 slidably arranged on the inner side of the strip slide groove 241 and fixed to the movable ring body 21. A bidirectional screw 243 is arranged between the connecting blocks 242 at both ends of the detection barrel 1, and the two ends of the bidirectional screw 243 respectively penetrate the two connecting blocks 242 and are threadedly connected thereto. When the bidirectional screw 243 rotates, it drives the connecting blocks 242 at both ends to move toward the middle. A limiting shell 244 is fixedly arranged on the outer side of the detection barrel 1, and an inner gear ring 245 is rotatably arranged in the middle part of the inner side of the limiting shell 244. A limiting buckle fixed to the limiting shell 244 is slidably arranged on the inner gear ring 245, so that the inner gear ring 245 is more stable when rotating. A transmission gear 246 meshing with the inner gear ring 245 is fixedly arranged on the bidirectional screw 243, and a servo motor is fixed on one side of the outer side of the detection barrel 1, and a driving gear meshing with the inner gear ring 245 is fixed on the output shaft of the servo motor.

[0034] By starting the servo motor, the output shaft of the servo motor drives the active gear to rotate, the active gear drives the internal gear ring 245 meshing with it to rotate, the internal gear ring 245 drives the transmission gear 246 meshing with it to rotate, the transmission gear 246 drives the bidirectional screw 243 at its axis to rotate, the bidirectional screw 243 drives the connecting blocks 242 at both ends to move toward the middle, and then drives the two movable ring bodies 21 to move toward the middle, the two movable ring bodies 21 are adjusted to match the tube bodies on both ends of the pressure vessel to be tested, which is conducive to making the detection device more convenient for the sealing detection of containers of different sizes, and improves the accuracy of the detection results of the detection device.

[0035] Second embodiment

[0036] In order to make the pressure vessel more stable during inspection, speed up the inspection speed of the inspection device, and improve the working efficiency of the inspection device, refer to Figure 4 In this embodiment, a positioning assembly 25 capable of limiting the position of pressure vessels of different sizes is arranged on the inner side of the detection barrel 1. Specifically, the positioning assembly 25 includes a plurality of threaded vertical shafts 251 arranged on both sides of the limiting ring body 22 and distributed in a circumferential array, and the number of the threaded vertical shafts 251 and the connecting block 242 is the same, one end of the threaded vertical shaft 251 passes through the detection barrel 1 and is fixedly provided with a bevel gear 1 252, one side of the bevel gear 1 252 is meshed with a bevel gear 253 fixed with the bidirectional screw 243, and the screw The other end of the threaded vertical axis 251 is threadedly provided with a threaded vertical tube 254, and a connecting frame 255 fixed to the detection barrel 1 is slidably provided at one end of the threaded vertical tube 254, and a limiting spring 256 is fixedly provided at the other end of the threaded vertical tube 254. A limiting hemisphere 257 is detachably provided at one end of the limiting spring 256, and an anti-slip pad in contact with the pressure vessel is fixedly bonded to the side of the limiting hemisphere 257, which increases the friction between the limiting hemisphere 257 and the pressure vessel, so that the limiting hemisphere 257 can position the pressure vessel more stably.

[0037] When the bidirectional screw 243 rotates, the two bevel gears 253 thereon are respectively driven to rotate, and the bevel gear 253 drives the bevel gear 1 252 meshing with it to rotate, and the bevel gear 1 252 drives the threaded vertical shaft 251 at its axis to rotate, and the threaded vertical shaft 251 drives the threaded vertical tube 254 at one end thereof to move toward the direction of the pressure vessel, and the threaded vertical tube 254 drives the limiting hemisphere 257 to move through the limiting spring 256 at one end thereof, so that the limiting hemisphere 257 contacts with the pressure vessel and squeezes the limiting spring 256 at the same time. The limiting spring 256 produces elastic deformation and is compressed, which can be adapted to pressure vessels of different types and sizes for sealing detection, thereby expanding the application range of the detection device and improving the stability of the pressure vessel during detection.

[0038] Third embodiment

[0039] In order to make it more convenient for pressure vessels of different sizes to enter the detection barrel 1, no professional technicians are required to complete the detection work, thereby reducing the detection cost. Figure 5 In this embodiment, a guide assembly 26 for allowing pressure vessels of different sizes to enter the detection barrel 1 is arranged on the inner side of the detection barrel 1. The specific implementation method is that the guide assembly 26 includes support rails 261 arranged on both sides of the bottom of the detection barrel 1, and a plurality of equally distributed guide wheels 262 are arranged on the inner side of the support rails 261. The guide wheels 262 are in contact with the outer wall of the pressure vessel. A limiting shaft 263 that rotates with the detection barrel 1 through a bearing is fixed at the axis of the guide wheel 262. The pressure vessel moves more conveniently on the guide wheel 262. At the same time, the plurality of guide wheels 262 on the two support rails 261 provide support for the pressure vessel.

[0040] The bottom of the support rail 261 is provided with a plurality of support tubes 264 which are equidistantly distributed and detachably connected to the detection barrel 1. A reset spring 265 is fixedly provided on the inner side of the support tube 264. A movable connecting rod 266 which slides in the support tube 264 and one end of which is fixed to the support rail 261 is fixed at one end of the reset spring 265. When encountering a pressure vessel of a larger size, the pressure vessel squeezes the guide wheel 262 and the support rail 261, and the support rail 261 pushes the movable connecting rod 266 to slide on the inner side of the support tube 264. The support tube 264 squeezes the reset spring 265, and the reset spring 265 is elastically deformed and compressed, which can not only play a certain buffering role, but also can adapt to pressure vessels of different diameters.

[0041] In actual use of the detection device, the pressure vessel to be detected is transported to the inner side of the detection barrel 1 through a conveyor, and the two side walls of the bottom of the pressure vessel are respectively in contact with the guide wheels 262 on the two support rails 261, and the pressure vessel is transported to the middle of the detection barrel 1. Then, according to the position of the tube body at both ends of the pressure vessel, the servo motor is started, and the output shaft of the servo motor drives the driving gear to rotate, and the driving gear drives the inner gear ring 245 meshing with it to rotate, and the inner gear ring 245 drives the transmission gear 246 meshing with it to rotate, and the transmission gear 2 46 drives the bidirectional screw 243 at its axis to rotate, the bidirectional screw 243 drives the two bevel gears 253 thereon to rotate respectively, the bevel gear 253 drives the bevel gear 1 252 meshing with it to rotate, the bevel gear 1 252 drives the threaded vertical shaft 251 at its axis to rotate, the threaded vertical shaft 251 drives the threaded vertical pipe 254 at one end thereof to move toward the direction of the pressure vessel, the threaded vertical pipe 254 drives the limiting hemisphere 257 to move through the limiting spring 256 at one end thereof, and the pressure vessel is pressed and fixed by the limiting hemisphere 257.

[0042] At the same time, the bidirectional screw 243 drives the connecting blocks 242 at both ends to move toward the middle, and then drives the two movable ring bodies 21 to move toward the middle. The two movable ring bodies 21 are adjusted to match the tube bodies on both ends of the pressure vessel to be tested, and then the detection bodies 23 on the limit ring body 22 and the two movable ring bodies 21 are used to perform sealing tests on the tube bodies welded on the pressure vessel.

[0043] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure vessel leakage detection device, comprising a transversely placed detection barrel (1), characterized in that: The detection barrel (1) is provided with a leak detection mechanism (2) suitable for leak detection of various types of pressure vessels; The leak detection mechanism (2) comprises movable ring bodies (21) respectively slidably arranged at the two ends of the inner side of the detection barrel (1), a limiting ring body (22) fixed at the middle part of the inner side of the detection barrel (1), and a plurality of detector bodies (23) respectively fixedly mounted on the movable ring body (21) and the limiting ring body (22) and arranged in a circumferential array. A positioning assembly (25) capable of limiting the position of pressure vessels of different sizes is arranged on the inner side of the detection barrel (1), and a transmission assembly (24) for synchronously driving the two movable ring bodies (21) to move toward the middle and driving the positioning assembly (25) to operate is arranged on the outer side of the detection barrel (1).

2. A pressure vessel leakage detection device according to claim 1, characterized in that: The transmission assembly (24) comprises a plurality of strip-shaped slide grooves (241) arranged in a circumferential array on the surfaces of both ends of the detection barrel (1), and a connecting block (242) slidably arranged inside the strip-shaped slide grooves (241) and fixed to the movable ring body (21); a bidirectional screw rod (243) is arranged between the connecting blocks (242) at both ends of the detection barrel (1), and both ends of the bidirectional screw rod (243) respectively penetrate the two connecting blocks (242) and are threadedly connected thereto.

3. A pressure vessel leakage detection device according to claim 2, characterized in that: A limit housing (244) is fixedly arranged on the outer side of the detection barrel (1), an inner gear ring (245) is rotatably arranged in the middle of the inner side of the limit housing (244), a limit buckle fixed to the limit housing (244) is slidably arranged on the inner gear ring (245), a transmission gear (246) meshing with the inner gear ring (245) is fixedly arranged on the bidirectional screw (243), a servo motor is fixed on one side of the outer side of the detection barrel (1), and an output shaft of the servo motor is fixed with a driving gear meshing with the inner gear ring (245).

4. A pressure vessel leakage detection device according to claim 2, characterized in that: The positioning assembly (25) comprises a plurality of threaded vertical shafts (251) arranged in a circumferential array on both sides of the limiting ring body (22), and the number of the threaded vertical shafts (251) is the same as that of the connecting blocks (242), and the other end of the threaded vertical shaft (251) is threadedly provided with a threaded vertical tube (254).

5. A pressure vessel leakage detection device according to claim 4, characterized in that: One end of the threaded vertical shaft (251) passes through the detection barrel (1) and is fixedly provided with a bevel gear 1 (252), and one side of the bevel gear 1 (252) is meshed with a bevel gear 2 (253) fixed to the bidirectional screw rod (243).

6. A pressure vessel leakage detection device according to claim 4, characterized in that: A connecting frame (255) fixed to the detection barrel (1) is slidably provided at one end of the threaded vertical tube (254), a limit spring (256) is fixedly provided at the other end of the threaded vertical tube (254), and a limit hemisphere (257) is detachably provided at one end of the limit spring (256).

7. A pressure vessel leakage detection device according to claim 1, characterized in that: The leak detection mechanism (2) further comprises a guide assembly (26) arranged inside the detection barrel (1) and used to allow pressure vessels of different sizes to enter the detection barrel (1); the guide assembly (26) comprises support rails (261) arranged on both sides of the bottom of the detection barrel (1); a plurality of equally spaced guide wheels (262) are arranged inside the support rails (261).

8. A pressure vessel leakage detection device according to claim 7, characterized in that: The guide wheel (262) is in contact with the outer wall of the pressure container, and a limiting shaft (263) is fixed at the axis of the guide wheel (262) and rotates with the detection barrel (1) through a bearing.

9. A pressure vessel leakage detection device according to claim 7, characterized in that: The bottom of the support rail (261) is provided with a plurality of support tubes (264) which are equidistantly distributed and detachably connected to the detection barrel (1); a return spring (265) is fixedly provided on the inner side of the support tube (264); and a movable connecting rod (266) which slides in the support tube (264) and has one end fixed to the support rail (261) is fixed to one end of the return spring (265). The movable connecting rod (266) slides in the support tube (264) and has one end fixed to the support rail (261).

Images