A weld detection device

Abstract

The utility model discloses a kind of weld detection devices, it is related to pipeline weld detection technical field, including base, clamping mechanism is fixedly installed on base, the inside of clamping mechanism is provided with plugging component, the front side of plugging component is provided with gas delivery component;Plugging component includes sliding plate slidingly installed on base, the upper end of sliding plate is fixedly connected with fixed frame, the top of fixed frame is provided with the fixed ring of liftable, air bag is fixedly installed in the inside of fixed ring, steel pipe is plugged by clamping mechanism, then fixed ring is moved to weld by sliding plate drive, and the height of fixed ring is adjusted by lifting piece, so that fixed ring and steel pipe are in same center axis, avoid unilateral pressure uneven gap gap, leading to sealing failure, then start air pump, so that air bag, steel pipe and fixed ring form closed space, then control gas into pipeline, whether there is bubble in the water in water tank inside by observation, judge whether weld exists problem.

Description

Technical Field

[0001] This utility model relates to the field of pipeline weld inspection technology, specifically to a weld inspection device. Background Technology

[0002] Pipes are a widely used material, applied in industrial and agricultural fields, infrastructure construction, and our daily lives. Examples include water pipes and gas pipes, which are common in our daily lives, as well as oil pipes and natural gas pipes in the industrial field. The quality of the welded joints of pipes is related to whether the pipes are tight.

[0003] For example, the pipeline weld inspection device disclosed in the authorization announcement number CN219589904U has a base plate and a limiting ring. The limiting ring is arranged above the base plate, and an airbag is installed on the inner end of the limiting ring. An air inlet is opened on the left end face of the airbag. A sealing cap is installed at the air inlet pipe through a threaded rotation. A soft pad is installed on the inner end of the airbag, and multiple pressure sensing units are installed on the inner end of the soft pad along its circumferential direction. A pipe is installed on the inner end of the pressure sensing unit.

[0004] In this solution, multiple welds on the pipeline can be detected simultaneously. However, the pressure sensors arranged in a ring cannot detect all locations on the weld. For example, there are certain gaps or intervals between each pressure sensor. If leakage occurs at this location, it cannot be effectively detected, resulting in missed detections. Based on this, this solution provides a weld detection device to solve the above-mentioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, a weld inspection device is provided. This technical solution solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A weld inspection device includes a base, a clamping mechanism fixedly mounted on the base, a sealing component disposed inside the clamping mechanism, and an air supply component disposed in front of the sealing component. The sealing component includes a sliding plate slidably mounted on the base, a fixed frame fixedly connected to the upper end of the sliding plate, a liftable fixed ring disposed at the top of the fixed frame, a lifting component disposed inside the fixed frame, an airbag fixedly mounted inside the fixed ring, an air inlet pipe fixedly mounted at the front end of the airbag and communicating with the air supply component, an air outlet pipe fixedly mounted at the rear end of the fixed ring, and the lower end of the air outlet pipe placed in a water tank, which is placed on the base.

[0008] Preferably, the lifting component includes a threaded rod rotatably mounted in a fixed frame, with a sleeve threadedly connected to the upper end of the threaded rod. The upper end of the sleeve passes through the fixed frame and is fixedly connected to the lower end of a fixed ring. A worm gear is fixedly mounted at the lower end of the threaded rod, and a servo motor is fixedly mounted on a sliding plate at the rear side of the worm gear. The output shaft of the servo motor is fixedly connected to a worm, which is rotatably mounted on the inner wall of the fixed frame and meshes with the worm gear.

[0009] Preferably, the rear end of the airbag is fixedly equipped with a switchable pressure relief pipe.

[0010] Preferably, the clamping mechanism includes a sliding seat slidably mounted on a base, a cylinder fixedly mounted on the base is provided on the left side of the sliding seat, the output shaft of the cylinder is fixedly connected to the left end of the sliding seat, a vertical plate one is fixedly connected to the upper end of the sliding seat, and a vertical plate two is fixedly mounted on the base to the right side of the vertical plate one; a circular plate one and a circular plate two are fixedly connected to the vertical plate one and the vertical plate two respectively, and a fixing block one and a fixing block two are fixedly connected to the opposite ends of the circular plate one and the circular plate two respectively, and a roller one and a roller two are fixedly mounted on the upper ends of the fixing block one and the fixing block two respectively.

[0011] Preferably, a sealing gasket is fixedly connected to a circular plate on the outer side of the first fixing block, and a sealing gasket is fixedly installed on a circular plate on the outer side of the second fixing block. An air guide pipe is fixedly installed inside the second fixing block, and the right end of the air guide pipe is connected to the air delivery assembly.

[0012] Preferably, the gas delivery assembly includes a third gas pipe connected to the gas guide pipe. A gas pump and a three-way control valve are fixedly installed on one side of the third gas pipe on the base. A first gas pipe is fixedly installed between the gas pump and the inlet of the three-way control valve. A second gas pipe is fixedly installed between one outlet of the three-way control valve and the gas inlet pipe. The other outlet of the three-way control valve is connected to the third gas pipe.

[0013] Compared with the prior art, the present invention proposes a weld inspection device, which has the following beneficial effects:

[0014] 1. In use, this utility model involves passing the steel pipe to be tested through the fixing ring and placing both ends on rollers one and two of the clamping mechanism. Then, driven by a cylinder, the two ends of the steel pipe are clamped. With the help of sealing gasket one, circular plate one, sealing gasket two, and circular plate two, the two ends of the steel pipe are sealed. Then, by sliding the sliding plate, the fixing ring is moved to the weld seam. The height of the fixing ring is then adjusted by the lifting component, ensuring that the fixing ring and the fixed steel pipe are on the same central axis. Then, the air pump is started, and the air bladder inside the fixing ring contacts the outside of the steel pipe, forming a sealed space with the fixing ring. After the gas enters the pipe, if there is a leak at the weld position, the gas passes through the leak point into the fixing ring and enters the water tank through the outlet pipe. By observing whether air bubbles are generated in the water inside the tank, if air bubbles are present, there is a leak at the weld seam being tested. This detection method is more intuitive and accurate, and will not result in missed detections.

[0015] 2. In this invention, during testing, gas is injected into the airbag using an air pump. After pressurization, the airbag expands and clamps against the outer wall of the pipe. The height of the fixing ring is adjusted by a lifting device, ensuring that the fixing ring and the fixed steel pipe are on the same central axis. This ensures full contact between the airbag and the surface of the steel pipe, preventing gaps caused by uneven pressure on one side, which could lead to seal failure. As a result, the gas inside the fixing ring will not leak during testing. After testing, the airbag can be quickly depressurized through a pressure relief pipe, and the position of the fixing ring can be adjusted by a sliding plate. This allows for rapid testing of multiple weld seams. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the left side structure of the clamping mechanism in this utility model;

[0018] Figure 3 This is a schematic diagram of the right side structure of the clamping mechanism in this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing component in this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the fixing ring in this utility model;

[0021] Figure 6 This is a schematic diagram of the gas delivery assembly in this utility model;

[0022] The numbers on the map are:

[0023] 1. Base; 2. Clamping mechanism; 3. Sealing assembly; 4. Gas delivery assembly;

[0024] 201. Sliding seat; 202. Cylinder; 203. Vertical plate one; 204. Circular plate one; 205. Sealing gasket one; 206. Fixing block one; 207. Roller one; 208. Vertical plate two; 209. Circular plate two; 2010. Sealing gasket two; 2011. Fixing block two; 2012. Roller two; 2013. Air guide pipe;

[0025] 301. Sliding plate; 302. Fixed frame; 303. Threaded rod; 304. Sleeve; 305. Worm gear; 306. Worm; 307. Servo motor; 308. Fixed ring; 309. Airbag; 3010. Inlet pipe; 3011. Outlet pipe; 3012. Water tank; 3013. Pressure relief pipe;

[0026] 401. Air pump; 402. Three-way control valve; 403. Air pipe one; 404. Air pipe two; 405. Air pipe three. Detailed Implementation

[0027] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0028] Reference Figure 1 As shown, a weld inspection device includes a base 1, a clamping mechanism 2 fixedly mounted on the base 1, a sealing component 3 disposed on the inner side of the clamping mechanism 2, and a gas supply component 4 disposed on the front side of the sealing component 3. When using this device, the steel pipe to be inspected is passed through the fixing ring 308 at the upper end of the sealing component 3, and both ends are placed on the clamping mechanism 2. Then, the clamping mechanism 2 is activated and driven by the cylinder 202, cooperating with the two circular plates 204 and 209 on both sides to seal both ends of the steel pipe. Then, by adjusting the sealing component 3, it is moved to the weld, and the gas supply component 4 is activated to inspect the weld.

[0029] Reference Figure 4-5 As shown, specifically in this embodiment, the sealing component 3 includes a sliding plate 301 slidably mounted on the base 1. A fixed frame 302 is fixedly connected to the upper end of the sliding plate 301. A liftable fixed ring 308 is provided at the top of the fixed frame 302. A lifting component is provided inside the fixed frame 302. An airbag 309 is fixedly installed inside the fixed ring 308. An air inlet pipe 3010 connected to the air delivery component 4 is fixedly installed at the front end of the airbag 309. An air outlet pipe 3011 is fixedly installed at the rear end of the fixed ring 308. The lower end of the air outlet pipe 3011 is placed inside the water tank 3012, which is placed on the base 1.

[0030] Furthermore: After the steel pipe is fixed, the air pump 401 in the air supply assembly 4 is then activated to supply air to the airbag 309. The airbag 309 inside the fixing ring 308 contacts the outside of the steel pipe, forming a sealed space with the fixing ring 308. Then, the air pump 401 inflates the inside of the steel pipe. After the gas enters the pipe, if there is a leak at the weld position, and the gas passes through the leak point into the fixing ring 308, it will enter the water tank 3012 through the air outlet pipe 3011. By observing whether there are air bubbles in the water inside the water tank 3012, if there are air bubbles, then there is a leak in the weld seam detected at this point. This detection method is more intuitive and accurate, and will not result in missed detections.

[0031] Reference Figure 4-5 As shown, specifically in this embodiment, the lifting component includes a threaded rod 303 rotatably mounted within a fixed frame 302. A sleeve 304 is threadedly connected to the upper end of the threaded rod 303. The upper end of the sleeve 304 passes through the fixed frame 302 and is fixedly connected to the lower end of a fixed ring 308. A worm gear 305 is fixedly mounted to the lower end of the threaded rod 303. A servo motor 307 is fixedly mounted on a sliding plate 301 on the rear side of the worm gear 305. A worm 306 is fixedly connected to the output shaft of the servo motor 307. The worm 306 is rotatably mounted on the inner wall of the fixed frame 302, and the worm 306 meshes with the worm gear 305.

[0032] Furthermore, the lifting component is driven by a servo motor 307, which in turn drives the worm gear 306 to rotate. The worm gear 306 then drives the worm wheel 305 to rotate, which in turn drives the threaded rod 303 to rotate. This rotation of the threaded rod 303 drives the sleeve 304 to move up and down, thereby adjusting the fixed ring 308. This ensures that the fixed ring 308 and the fixed steel pipe are on the same central axis, allowing the airbag 309 to fully contact the surface of the steel pipe. This prevents uneven pressure on one side from causing gaps and sealing failure, thus preventing gas leakage from the fixed ring during testing.

[0033] Reference Figure 4-5 As shown, specifically in this embodiment, the rear end of the airbag 309 is fixedly equipped with a switchable pressure relief pipe 3013.

[0034] Furthermore: After the inspection is completed, the airbag 309 can be quickly depressurized through the pressure relief pipe 3013 to relieve the pressure of the airbag 309 on the steel pipe. Then, the position of the fixing ring 308 can be adjusted through the sliding plate 301, so that multiple sets of welds can be inspected quickly.

[0035] Reference Figure 2-3As shown, specifically in this embodiment, the clamping mechanism 2 includes a sliding seat 201 slidably mounted on the base 1. A cylinder 202 is fixedly mounted on the base 1 on the left side of the sliding seat 201. The output shaft of the cylinder 202 is fixedly connected to the left end of the sliding seat 201. A vertical plate 203 is fixedly connected to the upper end of the sliding seat 201. A vertical plate 208 is fixedly mounted on the base 1 on the right side of the vertical plate 203. A circular plate 204 and a circular plate 209 are fixedly connected to the vertical plate 203 and the vertical plate 208, respectively. A fixing block 206 and a fixing block 2011 are fixedly connected to the opposite ends of the circular plate 204 and the circular plate 209, respectively. Rollers 207 and 2012 are fixedly mounted on the upper ends of the fixing blocks 206 and the fixing blocks 2011, respectively.

[0036] Reference Figure 2-3 As shown, specifically, in this embodiment, a sealing gasket 205 is fixedly connected to a circular plate 204 on the outer side of the fixing block 206, a sealing gasket 2010 is fixedly installed on a circular plate 209 on the outer side of the fixing block 2011, and an air guide pipe 2013 is fixedly installed inside the fixing block 2011. The right end of the air guide pipe 2013 is connected to the air delivery assembly 4.

[0037] Furthermore: by passing the steel pipe to be inspected through the fixing ring 308 and placing both ends on the rollers 207 and 2012 of the clamping mechanism 2, the cylinder 202 drives the sliding seat 201 to move closer to the vertical plate 208 until the circular plate 204 and 209 cooperate to clamp both ends of the steel pipe. The sealing gaskets 205 and 2010 are used to seal both ends of the steel pipe. Then, the air pump, through the air pipe 405 and the air guide pipe 2013, inflates the inside of the steel pipe to begin inspecting the weld of the steel pipe.

[0038] Reference Figure 6 As shown, specifically in this embodiment, the gas delivery assembly 4 includes a third gas pipe 405 connected to the gas guide pipe 2013. A gas pump 401 and a three-way control valve 402 are fixedly installed on one side of the third gas pipe 405 on the base 1. A first gas pipe 403 is fixedly installed between the gas pump 401 and the inlet of the three-way control valve 402. A second gas pipe 404 is fixedly installed between one outlet of the three-way control valve 402 and the air inlet pipe 3010. The other outlet of the three-way control valve 402 is connected to the third gas pipe 405.

[0039] Further: During testing, the three-way control valve 402 first activates air pipe one 403 and air pipe two 404, allowing the air pump 401 to inflate the air bladder 309 in the fixing ring 308, thereby causing the air bladder 309 to adhere to and seal the surface of the steel pipe. Then, air pipe two 404 is closed, and air pipe three 405 is activated. Through the cooperation of air pipe three 405 and air guide pipe 2013, air is inflated into the interior of the steel pipe to begin testing the weld of the steel pipe.

[0040] The working principle of this utility model is as follows: When in use, the steel pipe to be tested is passed through the fixing ring 308 and the two ends are placed on the roller 207 and roller 2012 of the clamping mechanism 2. Then, the cylinder 202 drives the sliding seat 201 to move closer to the vertical plate 208 until the circular plate 204 and circular plate 209 cooperate to clamp the two ends of the steel pipe, and the sealing gasket 205 and sealing gasket 2010 seal the two ends of the steel pipe.

[0041] After the steel pipe is fixed, the servo motor 307 drives the worm gear 306 to rotate, which in turn drives the worm wheel 305 to rotate. The worm wheel 305 then drives the threaded rod 303 to rotate, which in turn drives the sleeve 304 to move up and down. This allows the fixing ring 308 to be adjusted up and down, ensuring that the fixing ring 308 and the fixed steel pipe are on the same central axis. This ensures that the airbag 309 is in full contact with the surface of the steel pipe, preventing uneven pressure on one side from causing gaps and sealing failure. As a result, the gas inside the fixing ring will not leak out during testing.

[0042] Then, the gas supply assembly 4 is activated. The three-way control valve 402 first activates gas pipe 1 403 and gas pipe 2 404, allowing the air pump 401 to inflate the air bladder 309 in the fixed ring 308, thereby making the air bladder 309 adhere to and seal the surface of the steel pipe. Then, gas pipe 2 404 is closed, and gas pipe 3 405 is activated. Through the cooperation of gas pipe 3 405 and air guide pipe 2013, air is inflated into the inside of the steel pipe to begin inspecting the weld seam of the steel pipe: after the gas enters the pipeline, if there is a leak at the weld position, and the gas passes through the leak point into the fixed ring 308, it will enter the water tank 3012 through the gas outlet pipe 3011. By observing whether air bubbles are generated in the water inside the water tank 3012, if there are air bubbles, then there is a leak in the weld seam being inspected. This inspection method is more intuitive and accurate, and will not result in missed detections.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A weld inspection device, characterized in that, Includes a base (1), on which a clamping mechanism (2) is fixedly installed, and a sealing component (3) is provided on the inner side of the clamping mechanism (2), and a gas supply component (4) is provided on the front side of the sealing component (3); The sealing assembly (3) includes a sliding plate (301) slidably mounted on a base (1). A fixed frame (302) is fixedly connected to the upper end of the sliding plate (301). A liftable fixed ring (308) is provided at the top of the fixed frame (302). A lifting component is provided inside the fixed frame (302). An airbag (309) is fixedly installed inside the fixed ring (308). An air inlet pipe (3010) connected to the air delivery assembly (4) is fixedly installed at the front end of the airbag (309). An air outlet pipe (3011) is fixedly installed at the rear end of the fixed ring (308). The lower end of the air outlet pipe (3011) is placed inside a water tank (3012). The water tank (3012) is placed on the base (1).

2. The weld inspection device according to claim 1, characterized in that: The lifting component includes a threaded rod (303) rotatably installed in a fixed frame (302), the upper end of the threaded rod (303) is threadedly connected to a sleeve (304), the upper end of the sleeve (304) passes through the fixed frame (302) and is fixedly connected to the lower end of a fixed ring (308); A worm gear (305) is fixedly installed at the lower end of the threaded rod (303). A servo motor (307) is fixedly installed on the sliding plate (301) at the rear side of the worm gear (305). The output shaft of the servo motor (307) is fixedly connected to a worm (306). The worm (306) is rotatably installed on the inner wall of the fixed frame (302), and the worm (306) meshes with the worm gear (305).

3. The weld inspection device according to claim 1, characterized in that: Each airbag (309) has a switchable pressure relief pipe (3013) fixedly installed at its rear end.

4. The weld inspection device according to claim 1, characterized in that: The clamping mechanism (2) includes a sliding seat (201) slidably mounted on the base (1). A cylinder (202) is fixedly mounted on the base (1) on the left side of the sliding seat (201). The output shaft of the cylinder (202) is fixedly connected to the left end of the sliding seat (201). A vertical plate one (203) is fixedly connected to the upper end of the sliding seat (201). A vertical plate two (208) is fixedly mounted on the base (1) on the right side of the vertical plate one (203). Circular plate 1 (204) and circular plate 2 (209) are fixedly connected to vertical plate 1 (203) and vertical plate 2 (208) respectively. Fixed block 1 (206) and fixed block 2 (2011) are fixedly connected to the opposite ends of circular plate 1 (204) and circular plate 2 (209) respectively. Roller 1 (207) and roller 2 (2012) are fixedly installed on the upper ends of fixed block 1 (206) and fixed block 2 (2011) respectively.

5. The weld inspection device according to claim 4, characterized in that: The outer side of the first fixing block (206) is provided with a sealing gasket (205) fixedly connected to the first circular plate (204). The outer side of the second fixing block (2011) is provided with a sealing gasket (2010) fixedly installed on the second circular plate (209). The second fixing block (2011) is fixedly installed with a gas guide pipe (2013). The right end of the gas guide pipe (2013) is connected to the gas delivery assembly (4).

6. The weld inspection device according to claim 5, characterized in that: The gas delivery assembly (4) includes a third gas pipe (405) connected to the gas guide pipe (2013). A gas pump (401) and a three-way control valve (402) are fixedly installed on one side of the third gas pipe (405) on the base (1). A first gas pipe (403) is fixedly installed between the gas pump (401) and the inlet of the three-way control valve (402). A second gas pipe (404) is fixedly installed between one outlet of the three-way control valve (402) and the air inlet pipe (3010). The other outlet of the three-way control valve (402) is connected to the third gas pipe (405).

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