A pressure vessel inspection apparatus

Abstract

The application discloses a pressure container detection device and relates to the technical field of pressure container detection.The pressure container detection device comprises a base, an inflation mechanism fixedly connected to the top of the base, and a positioning mechanism fixedly connected to the top of the base.The positioning mechanism comprises a telescopic table arranged on the top of the base, an adhesive sheet arranged on the top of the telescopic table, and an elastic film fixedly connected to the inside of the adhesive sheet.The pressure container detection device drives multiple adhesive sheets to move along the surface of a container with a negative pressure state in the inside, provides friction for the adhesive sheets under the action of the negative pressure in the container, causes the adhesive sheets to adhere to the surface of the container, performs fixed-point marking detection on multiple leakage positions of the container, and facilitates positioning and detection of the leakage positions while detecting the container, thereby improving the convenience of pressure container detection.

Description

Technical Field

[0001] This invention relates to the field of pressure vessel testing technology, specifically to a pressure vessel testing device. Background Technology

[0002] A pressure vessel is a closed device that holds gas or liquid and withstands a certain pressure. Chinese patent CN116296112A discloses a pressure vessel testing device, including a work platform for placing the pressure vessel and a bubble solution supply tank. The work platform is equipped with a positioning mechanism and a testing mechanism. A water pipe rotates, causing a water distribution component to spray bubble solution onto the outer surface of the pressure vessel, evenly coating it with a layer of bubble solution. When the pressure vessel leaks, the bubble solution bubbles due to the leaking gas. The existing main method for inspecting pressure vessels is to place the vessel in liquid, inject liquid into the vessel, and observe the bubbles in the liquid. If there are multiple leaks in the vessel, it is necessary to flip the vessel multiple times to determine the leak point. The inspection process is cumbersome and inconvenient. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides a pressure vessel testing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a pressure vessel testing device, comprising a base, an inflation mechanism fixedly connected to the top of the base, and a positioning mechanism fixedly connected to the top of the base; The positioning mechanism includes: A telescopic platform, which is mounted on top of the base; An attachment plate is disposed on the top of the telescopic platform; An elastic film is fixedly connected inside the attachment sheet.

[0005] Preferably, the top of the telescopic platform is fixedly connected to side baffles on both sides of the attachment plate, a limiting card is fixedly connected to the side of the telescopic platform near the center of the base, a pressure block is movably connected to the top of the telescopic platform on the other side of the attachment plate away from the limiting card, a second spring is fixedly connected to the side of the pressure block away from the attachment plate, and the other end of the second spring connected to the pressure block is fixedly connected to the telescopic platform.

[0006] Preferably, a ball bearing is fixedly connected to the side of the telescopic platform near the center of the base, and a movable platform is movably connected to the side of the telescopic platform away from the ball bearing. A first spring is fixedly connected to the side of the movable platform near the telescopic platform, and the other side of the first spring connected to the movable platform is fixedly connected to the telescopic platform.

[0007] Preferably, a guide rail is fixedly connected to the top of the base, a drive block is movably connected to the top of the guide rail, a gear ring is provided on the top of the base, a motor is provided inside the drive block, and a gear that meshes with the gear ring is fixedly connected to the output shaft of the motor, a drive motor is fixedly connected to the top of the drive block, a threaded rod is fixedly connected to the top output shaft of the drive motor, the outer wall of the threaded rod is movably connected to the moving table through threads, a guide frame is fixedly connected to the top of the base, a movable block is movably connected to the inner side of the guide frame, and the movable block is fixedly connected to the drive block.

[0008] Preferably, the inflation mechanism includes an air pump, which is fixedly connected to the top of the base. A detection tube is provided on the top of the base, and a pressure relief tube is fixedly connected to the top of the detection tube. A connecting tube is fixedly connected to the top of the pressure relief tube, and the other end of the connecting tube connected to the pressure relief tube is fixedly connected to the air pump. An insertion head is fixedly connected to the bottom of the detection tube, and a mating plate is fixedly connected to the outer wall of the insertion head.

[0009] Preferably, an air inlet pipe is fixedly connected to the outer wall of the pressure relief pipe, and a filter screen is fixedly connected to the outer side of the air inlet pipe.

[0010] Preferably, a mating ring is fixedly connected inside the intake pipe, a pressure relief plug is provided inside the intake pipe on the inner side of the mating ring, a pressure relief spring is fixedly connected to the outer side of the pressure relief plug, and a fixing bracket is fixedly connected to the outer side of the pressure relief spring, and the fixing bracket is fixedly connected inside the intake pipe on the outer side of the mating ring.

[0011] Preferably, a display tube is fixedly connected to the outer wall of the detection tube, a spiral rod is movably connected inside the display tube, an opening is provided on the outer wall of the display tube located inside the spiral rod, a whistle is fixedly connected to the outer side of the display tube, and an omnidirectional impeller blade is provided inside the detection tube, the omnidirectional impeller blade is fixedly connected to the spiral rod through a connecting shaft.

[0012] This invention provides a pressure vessel testing device. It has the following advantages: 1. This pressure vessel detection device uses a telescopic platform to move multiple attachment plates along the surface of a container under negative pressure. The negative pressure inside the container provides friction to the attachment plates, causing them to adhere to the container surface. This allows for pinpoint detection of multiple leaks in the container, facilitating the location of leaks while detecting the container, thus improving the convenience of pressure vessel inspection.

[0013] 2. This pressure vessel testing device evacuates the pressure vessel before testing. When there is no leak in the vessel, external air is drawn into the pressure relief pipe through the air inlet pipe, causing the omnidirectional impeller blades to stop rotating. During the evacuation stage, a pre-test of the vessel can be performed. If a vessel without a leak is detected, subsequent testing steps can be omitted, greatly saving testing time and providing convenience for testing.

[0014] 3. When the inflation mechanism detects a leak in the container, the positioning mechanism inspects the surface of the container. After the attachment plate blocks the last leak, the container will be in a leak-free state. At this time, the whistle will stop sounding, indicating that all leaks on the container surface have been detected. The inspection of the outer wall of the container can be stopped immediately, which greatly saves inspection time and provides convenience for inspection. Attached Figure Description

[0015] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle; Figure 3 for Figure 1 Enlarged structural diagram of section B; Figure 4 This is a schematic diagram of the mobile station structure of the present invention; Figure 5 for Figure 4 Enlarged structural diagram of section F in the middle; Figure 6 This is a schematic diagram of the telescopic platform structure of the present invention; Figure 7 for Figure 6 Enlarged structural diagram of the middle G section; Figure 8 for Figure 1 Enlarged structural diagram of section C; Figure 9 for Figure 1 Enlarged structural diagram of section D in the middle; Figure 10 This is a schematic cross-sectional view of the detection tube of the present invention; Figure 11 for Figure 10 Enlarged structural diagram of section E in the middle.

[0016] In the diagram: 1. Base; 201. Vacuum pump; 202. Connecting pipe; 203. Pressure relief pipe; 204. Detection pipe; 205. Insertion head; 206. Mating plate; 207. Inlet pipe; 208. Filter screen; 209. Fixing frame; 210. Pressure relief spring; 211. Pressure relief plug; 212. Mating ring; 213. Display pipe; 214. Whistle; 215. Spiral rod; 216. Omnidirectional impeller blade; 301. Guide rail; 302. Drive block; 303. Threaded rod; 304. Drive motor; 305. Guide frame; 306. Movable block; 307. Attachment plate; 308. Moving platform; 309. Telescopic platform; 310. First spring; 311. Ball bearing; 312. Limiting clip; 313. Side baffle; 314. Pressure block; 315. Second spring; 316. Elastic membrane. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0019] Example 1: Please refer to Figure 1-7 The present invention provides a technical solution: a pressure vessel testing device, including a base 1, an inflation mechanism fixedly connected to the top of the base 1, and a positioning mechanism fixedly connected to the top of the base 1; Positioning mechanisms include: Telescopic platform 309 is installed on top of base 1; An attachment plate 307 is disposed on the top of the telescopic platform 309; Elastic film 316 is fixedly connected inside attachment piece 307; The positioning mechanism also includes: guide rail 301, drive block 302, threaded rod 303, drive motor 304, guide frame 305, movable block 306, moving table 308, first spring 310, ball bearing 311, limiting card 312, side baffle 313, pressure block 314, and second spring 315.

[0020] The container to be tested is placed on top of the base 1, and the inflation mechanism is connected to one of the openings of the container. The other openings of the container are closed, and the container is evacuated to a negative pressure by the inflation mechanism. This causes the container to draw air into the container through the leak. Then, the attachment plate 307 is moved to adhere to the container surface. When the attachment plate 307 is close to the leaking part of the container surface, the elastic membrane 316 will adhere to the container surface under the action of the pressure difference on both sides. The elastic membrane 316 is a soft membrane that will adhere to the container surface and can be stretched under external pressure. Under the action of the negative pressure inside the container, it provides friction for the attachment plate 307, causing the attachment plate 307 to adhere to the container surface and mark the leaking part.

[0021] Side baffles 313 are fixedly connected to both sides of the attachment plate 307 on the top of the telescopic platform 309. A limiting card 312 is fixedly connected to the side of the telescopic platform 309 near the center of the base 1. A pressure block 314 is movably connected to the top of the telescopic platform 309 on the other side of the attachment plate 307 away from the limiting card 312. A second spring 315 is fixedly connected to the side of the pressure block 314 away from the attachment plate 307. The other end of the second spring 315 connected to the pressure block 314 is fixedly connected to the telescopic platform 309. A groove is provided on the edge of the elastic film 316 on the side of the attachment plate 307 away from the limiting card 312, so that when the attachment plate 307 is stacked on the telescopic platform 309, both sides of the elastic film 316 are kept breathable to the outside air.

[0022] Multiple attachment pieces 307 are stacked on top of the telescopic platform 309, positioned between the limiting card 312 and the pressure block 314. The pressure block 314, under its elastic force, pushes the attachment pieces 307, creating a clamping and fixing effect between the pressure block 314 and the limiting card 312. The telescopic platform 309 then moves along the container surface. After the elastic film 316 adheres to the container surface, the telescopic platform 309 continues to rotate around the container surface. During this rotation, the attachment pieces 307 are stretched laterally by the elastic film 316 adhering to the container. The attachment pieces 307 are then pulled along the direction of the telescopic platform 309's movement by the movable block 306. The telescopic platform 309 moves in a certain direction, causing the corresponding attachment piece 307 to slide out from the top of the telescopic platform 309 through the gap between the limiting card 312 and the side baffle 313, and attach to the outer wall of the container. The restriction between the side baffle 313 and the limiting card 312 can prevent the two attachment pieces 307 from sliding out. Then, the second spring 315 will push the attachment piece 307 through the pressure block 314, so that the new attachment piece 307 is attached to the limiting card 312. As the telescopic platform 309 moves, multiple attachment pieces 307 can be attached to the leaks on the outer wall of the container, and multiple leaks on the container can be marked and detected at fixed points. A large area of ​​the outer wall of the container can be detected. Then, the outer wall of the more complex parts of the container is manually inspected individually.

[0023] A ball bearing 311 is fixedly connected to the side of the telescopic platform 309 near the center of the base 1. A movable platform 308 is movably connected to the side of the telescopic platform 309 away from the ball bearing 311. A first spring 310 is fixedly connected to the side of the movable platform 308 near the telescopic platform 309, and the other side of the first spring 310 connected to the movable platform 308 is fixedly connected to the telescopic platform 309.

[0024] The moving stage 308 can push the telescopic stage 309 toward the center of the base 1 through the first spring 310, thereby causing the ball bearing 311 to adhere to the container surface, and further causing the attachment piece 307 to adhere to the container surface.

[0025] A guide rail 301 is fixedly connected to the top of the base 1, and a drive block 302 is movably connected to the top of the guide rail 301. A gear ring is provided on the top of the base 1. A motor is provided inside the drive block 302, and a gear that meshes with the gear ring is fixedly connected to the output shaft of the motor. A drive motor 304 is fixedly connected to the top of the drive block 302. A threaded rod 303 is fixedly connected to the top output shaft of the drive motor 304. The outer wall of the threaded rod 303 is movably connected to the moving table 308 through threads. A guide frame 305 is fixedly connected to the top of the base 1. A movable block 306 is movably connected to the inner side of the guide frame 305. The movable block 306 is fixedly connected to the drive block 302.

[0026] Driven by the internal motor of the drive block 302, the drive block 302 can move along the guide rail 301, which in turn drives the telescopic table 309 to rotate around the container via the threaded rod 303. At the same time, the drive motor 304 drives the threaded rod 303 to rotate, which enables the moving table 308 to move in the vertical direction, allowing the attachment plate 307 to move in multiple ranges on the surface of the container.

[0027] Example 2: Please refer to Figure 1-11 Based on Embodiment 1, the present invention provides a technical solution: The inflation mechanism includes an air pump 201, a connecting pipe 202, a pressure relief pipe 203, a detection pipe 204, an insertion head 205, a mating plate 206, an air inlet pipe 207, a filter screen 208, a fixing frame 209, a pressure relief spring 210, a pressure relief plug 211, a mating ring 212, an outlet pipe 213, a whistle 214, a spiral rod 215, and omnidirectional impeller blades 216. The air pump 201 is fixedly connected to the top of the base 1. The detection pipe 204 is provided on the top of the base 1. The pressure relief pipe 203 is fixedly connected to the top of the detection pipe 204. The connecting pipe 202 is fixedly connected to the top of the pressure relief pipe 203. The other end of the connecting pipe 202 connected to the pressure relief pipe 203 is fixedly connected to the air pump 201. The insertion head 205 is fixedly connected to the bottom of the detection pipe 204. The mating plate 206 is fixedly connected to the outer wall of the insertion head 205.

[0028] The insert head 205 has a conical opening. The outer wall of the insert head 205 can block openings of various diameters. At the same time, the mating plate 206 can seal openings larger than the insert head 205. When the vacuum pump 201 is started, it can extract air through the connecting pipe 202, which further reduces the air pressure inside the container. At this time, the insert head 205 and the mating plate 206 will further fit the opening of the container under pressure.

[0029] An air intake pipe 207 is fixedly connected to the outer wall of the pressure relief pipe 203, and a filter screen 208 is fixedly connected to the outer side of the air intake pipe 207.

[0030] A mating ring 212 is fixedly connected inside the intake pipe 207. A pressure relief plug 211 is provided inside the intake pipe 207 on the inner side of the mating ring 212. A pressure relief spring 210 is fixedly connected to the outer side of the pressure relief plug 211. A fixing bracket 209 is fixedly connected to the outer side of the pressure relief spring 210. The fixing bracket 209 is fixedly connected inside the intake pipe 207 on the outer side of the mating ring 212.

[0031] When there is no leak in the container being tested, the vacuum pump 201 continuously extracts air from the container, causing the internal pressure of the base 1 to continuously decrease. This leads to a continuous increase in the power of the vacuum pump 201. When the internal pressure of the container is too low, the external atmospheric pressure will push the pressure relief plug 211 inward, causing the pressure relief spring 210 to be compressed. This allows external air to be drawn into the pressure relief pipe 203 through the filter screen 208 along the air inlet pipe 207, and then extracted by the vacuum pump 201 through the connecting pipe 202, thus preventing the working power of the vacuum pump 201 from continuously increasing.

[0032] The outer wall of the detection tube 204 is fixedly connected to the display tube 213, and the inside of the display tube 213 is movably connected to the spiral rod 215. The outer wall of the display tube 213 is provided with an opening inside the spiral rod 215. The outer side of the display tube 213 is fixedly connected to the whistle 214. The detection tube 204 is provided with an omnidirectional impeller blade 216, which is fixedly connected to the spiral rod 215 through a connecting shaft.

[0033] When there is a leak in the container, air can be continuously drawn out of the container through the detection tube 204, forming an airflow inside the detection tube 204. The airflow inside the detection tube 204 can drive the omnidirectional impeller blades 216 to rotate, and further drive the screw rod 215 to rotate through the omnidirectional impeller blades 216. The screw rod 215 will push air into the opening of the outlet tube 213 and flow to the whistle 214, causing the whistle 214 to make a sound. During the initial evacuation phase, the whistle 214 will continuously emit a sound. When there is no leak in the container, and the pressure inside the base 1 is too low, air will be drawn into the pressure relief pipe 203 through the air inlet pipe 207. At this time, no air flows through the detection pipe 204, and the omnidirectional impeller blades 216 stop rotating. During the evacuation phase, a pre-detection of the container can be performed. If a container without a leak is detected, the subsequent detection steps can be omitted. When the inflation mechanism detects a leak in the container, the positioning mechanism inspects the surface of the container. When the attachment piece 307 is attached to the leak, the movable block 306 will adhere to the surface of the leak under negative pressure and block the leak. After the attachment piece 307 blocks the last leak, the container will be in a state without leaks. Afterward, when the vacuum pump 201 works, the pressure inside the container will be too low, and air will be introduced through the air inlet pipe 207, causing the whistle 214 to stop emitting sound. At this time, all leaks on the surface of the container have been detected, and the inspection of the outer wall of the container can be stopped immediately.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressure vessel testing device, comprising a base (1), characterized in that: An inflation mechanism is fixedly connected to the top of the base (1), and a positioning mechanism is fixedly connected to the top of the base (1); The positioning mechanism includes: Telescopic platform (309), the telescopic platform (309) is set on the top of the base (1); An attachment plate (307) is disposed on top of the telescopic platform (309); An elastic film (316) is fixedly connected inside the attachment sheet (307); The top of the telescopic platform (309) is fixedly connected to both sides of the attachment plate (307), and a limiting card (312) is fixedly connected to the side of the telescopic platform (309) near the center of the base (1). A pressure block (314) is movably connected to the other side of the top of the telescopic platform (309) away from the limiting card (312). The inflation mechanism includes an air pump (201), a detection tube (204) is provided on the top of the base (1), a pressure relief tube (203) is fixedly connected to the top of the detection tube (204), and a connecting tube (202) is fixedly connected to the top of the pressure relief tube (203).

2. The pressure vessel testing device according to claim 1, characterized in that: A second spring (315) is fixedly connected to the side of the pressure block (314) away from the attachment plate (307), and the other end of the second spring (315) connected to the pressure block (314) is fixedly connected to the telescopic platform (309).

3. The pressure vessel testing device according to claim 2, characterized in that: The telescopic platform (309) is fixedly connected to a ball bearing (311) on the side near the center of the base (1). The telescopic platform (309) is movably connected to a movable platform (308) on the side away from the ball bearing (311). The movable platform (308) is fixedly connected to a first spring (310) on the side near the telescopic platform (309), and the other side of the first spring (310) connected to the movable platform (308) is fixedly connected to the telescopic platform (309).

4. The pressure vessel testing device according to claim 3, characterized in that: The base (1) is fixedly connected to the top of a guide rail (301), and the top of the guide rail (301) is movably connected to a drive block (302). The base (1) is provided with a gear ring. The drive block (302) is provided with a motor inside, and a gear that meshes with the gear ring is fixedly connected to the output shaft of the motor. The top of the drive block (302) is fixedly connected to a drive motor (304). The top output shaft of the drive motor (304) is fixedly connected to a threaded rod (303). The outer wall of the threaded rod (303) is movably connected to the moving table (308) through a thread. The top of the base (1) is fixedly connected to a guide frame (305). The inner side of the guide frame (305) is movably connected to a movable block (306). The movable block (306) is fixedly connected to the drive block (302).

5. The pressure vessel testing device according to claim 1, characterized in that: The vacuum pump (201) is fixedly connected to the top of the base (1). The other end of the connecting pipe (202) and the pressure relief pipe (203) is fixedly connected to the vacuum pump (201). An insertion head (205) is fixedly connected to the bottom of the detection pipe (204). A mating plate (206) is fixedly connected to the outer wall of the insertion head (205).

6. The pressure vessel testing device according to claim 5, characterized in that: An air inlet pipe (207) is fixedly connected to the outer wall of the pressure relief pipe (203), and a filter screen (208) is fixedly connected to the outer side of the air inlet pipe (207).

7. A pressure vessel testing device according to claim 6, characterized in that: The intake pipe (207) is fixedly connected to a mating ring (212). A pressure relief plug (211) is provided inside the intake pipe (207) on the inner side of the mating ring (212). A pressure relief spring (210) is fixedly connected to the outer side of the pressure relief plug (211). A fixing bracket (209) is fixedly connected to the outer side of the pressure relief spring (210), and the fixing bracket (209) is fixedly connected inside the intake pipe (207) on the outer side of the mating ring (212).

8. A pressure vessel testing device according to claim 5, characterized in that: The outer wall of the detection tube (204) is fixedly connected to the display tube (213), and the inside of the display tube (213) is movably connected to the spiral rod (215). The outer wall of the display tube (213) is provided with an opening on the inner side of the spiral rod (215). The outer side of the display tube (213) is fixedly connected to the whistle (214). The inside of the detection tube (204) is provided with an omnidirectional impeller blade (216), and the omnidirectional impeller blade (216) is fixedly connected to the spiral rod (215) through a connecting shaft.

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