Liquid immersion type pressure pipeline air tightness detection device

Abstract

The utility model relates to the field of detection devices, in particular to a liquid immersion type pressure pipeline air tightness detection device, which comprises a liquid immersion box, a corrugated main pipe, a lifting frame and an air tightness immersion mounting pipe, through a separation area formed by the wave impingement plate and the blocking lines, in combination with a built-in infrared sensor, bubble dynamic states are monitored in real time, subjective errors of naked eye observation are eliminated, tiny leakage is effectively recognized, the lifting frame is driven by the air cylinder to ascend and descend, the water pressure in the liquid immersion box can be accurately adjusted, and pressure impacts of different working conditions on a pipeline can be simulated. Meanwhile, the wave impingement plate and the stabilizing plate cooperate to reduce water flow fluctuation interference, the airtight soaking mounting pipe is subjected to steering adjustment and air bag floating ball self-adaptive positioning, rapid adaptation of different pipe diameters and mounting angles is supported, the operation complexity is reduced, an airtight sleeve and a branch sleeve form a multi-layer sealing structure, and the service life is prolonged. The pressurizing box is combined to control the air pump to dynamically compensate air pressure, misjudgment or equipment damage caused by sudden pressure change in the detection process is prevented, and the overall detection effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of testing devices, and in particular to a liquid immersion pressure pipeline air tightness testing device. Background Technology

[0002] Pressure pipelines are tubular devices that use internal or external pressure to transport gases or liquids. Air tightness testing is the process of verifying the sealing performance of pressure pipelines, assessing the pipeline's sealing ability under a set pressure, and ensuring long-term operational reliability. Air tightness testing ensures safety and compliance by verifying sealing performance. The testing requires a technical solution that combines pressure level, medium characteristics, and regulatory requirements, and is a key step in preventing accidents.

[0003] Traditional immersion devices require operators to visually inspect bubbles, which can easily lead to missed detections due to visual fatigue or environmental interference. Furthermore, tiny bubbles are easily affected by liquid flow, reducing the overall testing effectiveness. Therefore, a immersion-type pressure pipeline airtightness testing device can be designed. Utility Model Content

[0004] To overcome the problems of requiring operators to visually observe bubbles, which can easily lead to missed detection due to visual fatigue or environmental interference, and the fact that tiny bubbles are easily disturbed by liquid flow.

[0005] The technical solution of this utility model is as follows: a liquid immersion pressure pipeline air tightness testing device, including a liquid immersion tank, a corrugated main pipe, a lifting frame and an air tightness immersion installation pipe; the liquid immersion tank is used for testing the air tightness of pressure pipelines, and a lifting frame that can be raised and lowered to increase the influence of water pressure on the pressure pipe is provided above the liquid immersion tank. Several sets of air tightness immersion installation pipes for testing the pressure pipeline are arranged horizontally on the lifting frame. A corrugated main pipe for guiding water flow is fixed at one end of the liquid immersion tank.

[0006] Preferably, the separation area formed by the corrugated anti-impact plate and the barrier texture, combined with the built-in infrared sensor to monitor the dynamics of bubbles in real time, eliminates the subjective error of visual observation and effectively identifies minor leaks. The lifting frame is driven by a cylinder to raise and lower, which can precisely adjust the water pressure in the immersion tank and simulate the pressure impact on the pipeline under different working conditions. At the same time, the corrugated anti-impact plate and the stabilizing plate work together to reduce the interference of water flow fluctuations. The airtight immersion installation pipe adopts steerable adjustment and airbag float adaptive positioning, which supports rapid adaptation to different pipe diameters and installation angles and reduces the complexity of operation.

[0007] Preferably, a shock-absorbing plate is fixed to the bottom of the immersion tank, several sets of drain plugs are arranged horizontally on the lower outer side of the immersion tank, and several sets of wave-damping plates are arranged inside the immersion tank to reduce the impact of water flow fluctuations. Both ends of the wave-damping plates are fixed with extension blocks, a second positioning hole is opened in the center of the extension block, and a slide rail is fixed to the bottom edge of the extension block.

[0008] Preferably, a first adjustment groove is provided at the top edge of both sides of the liquid immersion tank, and a first positioning hole corresponding to the second positioning hole is linearly provided inside the first adjustment groove. A separation area is formed between the two sets of corrugated anti-impact plates, and several sets of barrier patterns are fixedly distributed on both sides of the corrugated anti-impact plates. An infrared sensor is provided between the two sets of barrier patterns.

[0009] Preferably, several groups of corrugated main pipes are arranged horizontally, and a stabilizing plate connected to the liquid immersion tank is fixed to the bottom of each group of corrugated main pipes. A conveying pipe is obliquely provided at the top of the corrugated main pipe, and a connecting pipe is fixed to the top of the conveying pipe. A conveying corrugated pipe is fixed to the bottom of the connecting pipe.

[0010] Preferably, the lifting frame has several sets of second adjustment slots corresponding to the airtight immersion installation pipes, and the lifting frame has through holes that connect to the second adjustment slots. Both ends of the lifting frame are fixedly connected to connecting blocks. The top center of the connecting block is provided with a push sleeve. The top of the push sleeve is provided with a cylinder. The inside of the push sleeve is provided with a fixing rod. The bottom of the fixing rod is fixedly connected to a support block. The cylinder drives the push sleeve to move the lifting frame up and down along the fixing rod.

[0011] Preferably, a number of airbag floats are circumferentially fixed to the middle of the airtight immersion installation tube, and a number of airtight sleeves are circumferentially fixed to the bottom periphery of the airtight immersion installation tube. Several sets of connecting airtight immersion installation tubes are linearly arranged on the airtight sleeves. A main sleeve is opened at the bottom of the airtight immersion installation tube, and a pressure sensor is installed inside the airbag floats.

[0012] Preferably, a guide block is fixed to the top of the airtight immersion installation tube, and a corresponding hole is passed through the middle of the guide block. A steering rod is provided inside the corresponding hole. A drive motor is fixed to one end of the steering rod, and a sleeve is provided at the end of the steering rod away from the drive motor. The drive motor drives the steering rod to rotate the guide block along the inside of the sleeve. A pressure box is provided above the airtight immersion installation tube, and a control air pump is provided at the top of the pressure box. An air pipe communicating with the airtight immersion installation tube is provided on the side of the pressure box. An air pressure and flow sensor is inserted into the outer end of the air pipe, and a pressure gauge is electrically connected to the outer end of the air pressure and flow sensor.

[0013] The beneficial effects of this utility model are:

[0014] 1. Based on the separation area formed by the corrugated anti-impact plate and the barrier texture, combined with the built-in infrared sensor to monitor the dynamics of air bubbles in real time, the subjective error of visual observation is eliminated, and the micro-leakage is effectively identified. The lifting frame is driven by a cylinder to raise and lower, which can precisely adjust the water pressure in the liquid immersion tank and simulate the pressure impact on the pipeline under different working conditions. At the same time, the corrugated anti-impact plate and the stabilizing plate work together to reduce the interference of water flow fluctuations. The airtight immersion installation pipe adopts steerable adjustment and airbag float self-adaptive positioning, which supports the rapid adaptation of different pipe diameters and installation angles, reducing the complexity of operation. The airtight sleeve and the split sleeve form a multi-layer sealing structure. Combined with the pressure box to control the air pump to dynamically compensate for the air pressure, it prevents misjudgment or equipment damage caused by pressure changes during the detection process, and improves the overall detection effect. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the overall structure of this practical airtightness testing device.

[0016] Figure 2 The diagram shown is of the liquid immersion tank of this practical airtightness testing device;

[0017] Figure 3 The diagram shown is of the corrugated main pipe of this practical airtightness testing device;

[0018] Figure 4 The diagram shown is of the lifting frame of this practical airtightness testing device;

[0019] Figure 5 The diagram shown is a schematic of the airtightness immersion installation tube of this practical airtightness testing device.

[0020] Explanation of reference numerals in the attached drawings: 1. Immersion tank; 2. Corrugated main pipe; 3. Lifting frame; 4. Airtight immersion mounting pipe; 101. Shock-absorbing plate; 102. Corrugated anti-impact plate; 103. Drain plug; 104. Barrier pattern; 105. Separated area; 106. Infrared sensor; 107. First adjusting groove; 108. First positioning hole; 109. Second positioning hole; 201. Stabilizing plate; 202. Conveying pipe; 203. Connecting pipe; 204. Conveying corrugated pipe; 301 302. Second adjusting groove; 303. Connecting block; 304. Through hole; 305. Cylinder; 306. Push sleeve; 307. Fixing rod; 308. Support block; 409. Steering rod; 400. Drive motor; 400. Sleeve; 401. Pressurization box; 402. Control air pump; 403. Air pipe; 404. Guide block; 405. Corresponding hole; 406. Pressure gauge; 410. Airbag float; 411. Sub-sleeve; 412. Main sleeve; 413. Airtight sleeve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-5 This utility model provides an embodiment: a liquid immersion pressure pipeline airtightness testing device, including a liquid immersion tank 1, a corrugated main pipe 2, a lifting frame 3, and an airtight immersion installation pipe 4; the liquid immersion tank 1 is used for testing the airtightness of pressure pipelines, and the lifting frame 3 is provided above the liquid immersion tank 1 to increase the influence of water pressure on the pressure pipe. Several sets of airtight immersion installation pipes 4 for installing and testing pressure pipelines are arranged horizontally on the lifting frame 3. A corrugated main pipe 2 for guiding water flow is fixed at one end of the liquid immersion tank 1.

[0023] Please see Figures 2-3 In this embodiment, a shock-absorbing plate 101 is fixedly connected to the bottom of the immersion tank 1. Several sets of drain plugs 103 are arranged horizontally on the lower outer side of the immersion tank 1. Several sets of wave-damping plates 102 are arranged inside the immersion tank 1 to reduce the impact of water flow fluctuations. Both ends of the wave-damping plates 102 are fixedly connected to extension blocks. A second positioning hole 109 is opened in the center of the extension block. A slide rail is fixedly connected to the bottom edge of the extension block. A first adjustment groove 107 is opened at the top edge of both sides of the immersion tank 1. A first positioning hole 108 corresponding to the second positioning hole 109 is linearly opened inside the first adjustment groove 107. A separation area 105 is formed between the two sets of wave-damping plates 102. Several sets of blocking patterns 104 are fixedly connected to both sides of the wave-damping plates 102. An infrared sensor 106 is provided between the two sets of blocking patterns 104.

[0024] Please see Figures 2-3 In this embodiment, several sets of corrugated main pipes 2 are arranged horizontally. The bottom of each set of corrugated main pipes 2 is fixedly connected to a stabilizing plate 201 connected to the immersion tank 1. The top of the corrugated main pipes 2 is provided with a conveying pipe 202 at an angle. The top of the conveying pipe 202 is fixedly connected to a connecting pipe 203. The bottom of the connecting pipe 203 is fixedly connected to a conveying corrugated pipe 204. Several sets of second adjustment grooves 301 corresponding to the airtight immersion installation pipes 4 are linearly opened on the lifting frame 3. The lifting frame 3 is provided with a through hole 303 communicating with the second adjustment grooves 301. Both ends of the lifting frame 3 are fixedly connected to connecting blocks 302. The top center of the connecting block 302 is provided with a push sleeve 305. The top of the push sleeve 305 is provided with a cylinder 304. The inside of the push sleeve 305 is provided with a fixing rod 306. The bottom of the fixing rod 306 is fixedly connected to a support block 307. The cylinder 304 drives the push sleeve 305 to move the lifting frame 3 up and down along the fixing rod 306.

[0025] Please see Figures 3-5In this embodiment, several sets of airbag floats 410 are circumferentially fixed to the middle of the airtight immersion installation tube 4, and several sets of airtight sleeves 413 are circumferentially fixed to the bottom periphery of the airtight immersion installation tube 4. Several sets of branch sleeves 411 communicating with the airtight immersion installation tube 4 are linearly provided on the airtight sleeves 413. A main sleeve 412 is opened at the bottom of the airtight immersion installation tube 4. A pressure sensor is provided inside the airbag floats 410. A guide block 407 is fixed to the top of the airtight immersion installation tube 4. A corresponding hole 408 is passed through the middle of the guide block 407. A steering rod 4 is provided inside the corresponding hole 408. 01. One end of the steering rod 401 is fixedly connected to the drive motor 402. The end of the steering rod 401 away from the drive motor 402 is provided with a sleeve 403. The drive motor 402 drives the steering rod 401 to drive the guide block 407 to rotate along the inside of the sleeve 403. A pressure box 404 is provided above the airtight soaking installation tube 4. A control air pump 405 is provided on the top of the pressure box 404. An air pipe 406 connected to the airtight soaking installation tube 4 is provided on the side of the pressure box 404. An air pressure flow sensor is inserted into the outer end of the air pipe 406. A pressure gauge 409 is electrically connected to the outer end of the air pressure flow sensor.

[0026] During operation, the main sleeve 412 and the branch sleeve 411 are selected and assembled according to the test pipe size. The depth of entry into the liquid immersion tank 1 is adjusted by the stretching degree of the conveying corrugated pipe 204. The corrugated main pipe 2 is fixed to the liquid immersion tank 1 by the stabilizing plate 201. The top of the conveying pipe 202 is connected to the conveying corrugated pipe 204 by the connecting pipe 203 to ensure the stability of water flow.

[0027] Based on the length of the air pressure pipeline, the wave anti-impact plate 102 is pushed to move along the slide rail. Precise positioning is achieved through the linkage of the first adjusting groove 107 and the second positioning hole 109, forming a separation area 105 to suppress water flow fluctuation interference. The cylinder 304 drives the push sleeve 305 to drive the lifting frame 3 to descend along the fixed rod 306, changing the water level in the immersion tank 1 and precisely controlling the water pressure to simulate the pressure impact on the pipeline under different working conditions. The drive motor 402 drives the guide block 407 to rotate along the sleeve 403 through the steering rod 401, realizing the multi-angle of the airtight immersion installation pipe 4. The system is highly adaptable. The air pump 405 inside the pressurization box 404 injects gas into the airtight soaking installation tube 4 through the air pipe 406. The air pressure flow sensor and pressure gauge 409 work together to monitor air pressure changes and dynamically compensate for pressure fluctuations to avoid misjudgment. The bubbles in the separation area 105 rise in a controlled manner. The built-in infrared sensor 106 analyzes the location and severity of the leak in real time based on the motion trajectory and frequency. The airbag float 410 integrates a pressure sensor. If abnormal pressure or excessive equipment vibration is detected, the system will automatically trigger an alarm and suspend the pressurization process to prevent equipment damage.

[0028] Through the above steps, the airtight immersion installation tube 4 adopts steerable adjustment and adaptive positioning of airbag float 410, which supports rapid adaptation of different pipe diameters and installation angles, reducing the complexity of operation. The airtight sleeve 413 and the split sleeve 411 form a multi-layer sealing structure. Combined with the pressure box 404, the air pump 405 dynamically compensates for the air pressure, preventing misjudgment or equipment damage caused by pressure changes during the detection process.

Claims

1. A liquid immersion type pressure pipeline air tightness detection device, comprising a liquid immersion box (1); characterized in that: Also include the corrugated main pipe (2), lifting frame (3) and airtight immersion installation pipe (4); for carrying out pressure pipeline airtightness detection liquid immersion tank (1), liquid immersion tank (1) is provided with lifting operation increasing water pressure on the pressure pipe influence lifting frame (3) above, lifting frame (3) is transversely provided with several groups of airtight immersion installation pipe (4) for installing and detecting the pressure pipeline, one end of liquid immersion tank (1) is fixed with corrugated main pipe (2) for guiding water flow to transport.

2. The apparatus for detecting gas tightness of a pressure pipeline according to claim 1, wherein: The bottom of the liquid immersion tank (1) is fixed with a shock absorbing plate (101), and the outside of the liquid immersion tank (1) is arranged with a plurality of groups of water discharge plugs (103) laterally, and the inside of the liquid immersion tank (1) is arranged with a plurality of groups of wave impact prevention plates (102) for weakening the impact of water flow, both ends of the wave impact prevention plate (102) are fixed with extension blocks, the center of the extension block is provided with a second positioning hole (109), and the bottom edge of the extension block is fixed with a sliding rail.

3. The apparatus for detecting gas tightness of a pressure pipeline according to claim 2, wherein: The top edge of the liquid immersion tank (1) is provided with a first adjusting groove (107), and the inside of the first adjusting groove (107) is linearly provided with a first positioning hole (108) corresponding to the second positioning hole (109), and the two groups of wave impact prevention plates (102) form a separation area (105), and a plurality of groups of barrier patterns (104) are fixedly connected on both sides of the wave impact prevention plate (102), and an infrared sensor (106) is arranged between the two groups of barrier patterns (104).

4. The apparatus for detecting gas tightness of a pressure pipeline according to claim 1, wherein: The corrugated main pipe (2) is arranged with a plurality of groups of corrugated main pipes (2), and the bottom of the corrugated main pipe (2) is fixed with a stable plate (201) connected with the liquid immersion tank (1), and the top of the corrugated main pipe (2) is obliquely provided with a conveying pipe (202), and the top of the conveying pipe (202) is fixedly connected with a connecting pipe (203), and the bottom of the connecting pipe (203) is fixedly connected with a conveying corrugated pipe (204).

5. The apparatus for detecting gas tightness of a pressure pipeline according to claim 1, wherein: The lifting frame (3) is linearly provided with a plurality of groups of second adjusting grooves (301) corresponding to the airtight immersion installation pipe (4), and the lifting frame (3) is provided with a through hole (303) communicating with the second adjusting groove (301), and the both ends of the lifting frame (3) are fixedly connected with a connecting block (302), and the top center of the connecting block (302) is provided with a pushing sleeve (305), and the top of the pushing sleeve (305) is provided with a gas cylinder (304), and the inside of the pushing sleeve (305) is provided with a fixed rod (306), and the bottom of the fixed rod (306) is fixedly connected with a supporting block (307), and the gas cylinder (304) drives the pushing sleeve (305) to drive the lifting frame (3) to rise and fall along the fixed rod (306).

6. The apparatus for detecting gas tightness of a pressure pipeline according to claim 1, wherein: The middle part of the airtight immersion installation pipe (4) is circumferentially fixed with a plurality of groups of air bag floating balls (410), and the bottom periphery of the airtight immersion installation pipe (4) is circumferentially fixed with a plurality of groups of airtight sleeves (413), and the airtight sleeve (413) is linearly provided with a plurality of groups of sub-tube (411) communicating with the airtight immersion installation pipe (4), and the bottom of the airtight immersion installation pipe (4) is provided with a main tube (412), and the inside of the air bag floating ball (410) is provided with a pressure sensor.

7. The apparatus for detecting gas tightness of a pressure pipeline according to claim 6, wherein: The top of the airtight soaking installation pipe (4) is fixed with a guide block (407), a corresponding hole (408) is penetrated in the middle of the guide block (407), the inside of the corresponding hole (408) is provided with a steering rod (401), one end of the steering rod (401) is fixedly connected with a driving motor (402), the end of the steering rod (401) away from the driving motor (402) is provided with a sleeve (403), the driving motor (402) drives the steering rod (401) to drive the guide block (407) to turn along the inside of the sleeve (403), an air pressure box (404) is arranged above the airtight soaking installation pipe (4), the top of the air pressure box (404) is provided with a control air pump (405), the side end of the air pressure box (404) is provided with an air pipe (406) communicated with the airtight soaking installation pipe (4), the outer end of the air pipe (406) is inserted with an air pressure flow sensor, and the outer end of the air pressure flow sensor is electrically connected with a pressure gauge (409).

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