A pipeline micro-leakage detection device

Abstract

This utility model relates to the field of pipeline inspection technology, and provides a pipeline micro-leakage detection device, including a leak detection device housing and an explosion-proof gland, with the explosion-proof gland fixed to one end of the leak detection device housing. This utility model, through its leak detection structure, firstly diverts gas through a three-way pipe, then collects pressure samples from the pipeline in real time and seals them with a solenoid valve. The sealed pressure value is automatically and periodically compared with the pressure inside the pipeline. Since the sample storage environment is the same as the pipeline's environment, including the same temperature, the pressure value is unaffected by changes in ambient temperature, resulting in relatively accurate detection results. When a difference occurs between the two pressure values ​​and reaches a set alarm threshold, the remote transmission module transmits an alarm signal to the terminal, enabling the device to be unaffected by ambient temperature, thereby improving the applicability of this pipeline micro-leakage detection device in use.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, and in particular to a pipeline micro-leakage detection device. Background Technology

[0002] Gas safety is a key focus of safety work, and pipeline leak detection is an important part of gas safety. Currently, many detection devices are available for indoor safety, but there is no professional detection equipment for leak detection of building risers. In order to monitor users' risers, detect leaks in newly built pipelines on-site or remotely, and promptly detect gas leaks, a pipeline micro-leak detection device will be used. To address this, patent CN218671661U discloses a pipeline leak detection device, including a connecting sleeve. Connecting ends are fixedly installed at both ends of the connecting sleeve. Through holes are formed inside each connecting end, and connecting bolts are fitted inside the through holes. A connecting plate is fixedly installed on the outer side of the connecting sleeve, with connecting holes inside the connecting plate and protrusions fixedly installed on its outer side. This pipeline leak detection device features multiple movable plates installed on the outer side of the pipeline via the connecting sleeve. A pressure sensor is installed between the movable plates and the connecting sleeve. When a leak occurs in the pipeline, the movable plates move outward, and the pressure sensor detects a decrease in pressure between the movable plates and the connecting sleeve, sending an alarm signal to the operator for timely repair. Regular inspections by operators are not required. When the device length is insufficient, two sets of detection devices can be combined using connecting plates and bolts, making it suitable for pipelines of different lengths. Although the pipeline leak detection equipment mentioned above can be combined with two sets of detection equipment through connecting plates and bolts, and is suitable for pipelines of different lengths, its detection efficiency is poor. Since airtightness detection requires maintaining pressure for a certain period of time to observe pressure changes in the pipeline, the pressure will change due to temperature, which limits the accuracy and makes it less applicable. Utility Model Content

[0003] The purpose of this invention is to provide a pipeline micro-leakage detection device to solve the problem of poor detection efficiency in existing pipeline micro-leakage detection devices.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pipeline micro-leakage detection device, including a leak detection device housing and an explosion-proof gland; One end of the housing of the leak detection device is fixed with an explosion-proof gland, and the other end of the housing of the leak detection device is fixed with a threaded gas source connector. The inside of the housing of the leak detection device is provided with a leak detection structure. The leak detection structure includes a central processing unit module fixed inside the housing of the leak detection device. A gas storage chamber is fixed on one side of the bottom of the housing of the leak detection device. A solenoid valve is fixed on one side of the gas storage chamber. A second detection port tube is fixed on the other side of the gas storage chamber. A battery is installed on one side inside the housing of the leak detection device, and a leak detection device cover is installed on one side of the housing of the leak detection device. A sealing structure is installed on one side inside the leak detection device cover, and disassembly structures are evenly provided at both ends of one side of the leak detection device cover inside the housing of the leak detection device.

[0005] When using this device, the inclusion of a leak detection structure enables it to be unaffected by ambient temperature, thereby improving its applicability; the inclusion of a disassembly structure facilitates inspection and maintenance, thus enhancing its ease of use; and the inclusion of a sealing structure ensures leak prevention, thereby improving its sealing performance during use.

[0006] Preferably, a remote transmission module is provided on one side of the central processing unit module, a first detection air inlet is provided on one side of the bottom of the central processing unit module, and a second detection air inlet is provided on one side of the central processing unit module below the first detection air inlet. A second gas pipe valve front pipe is fixed to the end of the solenoid valve away from the gas storage chamber, and a three-way pipe is fixed to one end of the second gas pipe valve front pipe. First, the gas is diverted through the three-way pipe, and the pressure sample in the pipeline is collected in real time, sealed and stored, and compared with the pressure in the pipeline at regular intervals.

[0007] Preferably, one end of the three-way connector is fixedly connected to one end of the threaded air source connector, the other end of the three-way connector is fixedly connected to one end of the first detection air inlet, one end of the second detection port is fixedly connected to one end of the second detection air inlet, and the side end of the three-way connector is fixedly connected to one end of the second detection air inlet. The sample storage environment is the same as the environment where the pipeline is located, and the temperature is also the same, so the pressure value is not affected by changes in ambient temperature, and the detection results are relatively accurate. When the pressure reaches the set alarm value, the remote transmission module will transmit an alarm signal to the terminal.

[0008] Preferably, the disassembly structure includes fixing screws, threaded grooves, and mounting grooves. The mounting grooves are formed on both sides of the inside of the leak detection equipment cover. Threaded grooves penetrate the inside of the leak detection equipment cover on one side of the mounting grooves, and fixing screws penetrate the inside of each threaded groove. The fixing screws and threaded grooves allow the leak detection equipment cover to be fixed to or separated from the leak detection equipment housing.

[0009] Preferably, one end of the threaded groove extends into the interior of the leak detection equipment housing, and the leak detection equipment housing and the leak detection equipment cover are fixedly connected by fixing screws. When one end of the fixing screw is moved to the outside of the leak detection equipment housing, the leak detection equipment cover is moved to separate it from the leak detection equipment housing, thereby facilitating the inspection and maintenance of the interior of the leak detection equipment housing.

[0010] Preferably, the sealing structure includes a sealing ring, a placement groove, and a cavity. The placement groove is located on one side inside the cover of the leak detection equipment. The sealing ring is disposed inside the placement groove, and the cavity is disposed inside the sealing ring. The placement groove secures the sealing ring to the cover of the leak detection equipment, while the cavity causes the sealing ring to deform.

[0011] Preferably, one side of the sealing ring contacts one side of the leak detection device housing. This fills the gap between the leak detection device housing and the leak detection device cover, preventing external liquids, gases, or dust from entering, thereby improving the sealing performance between the leak detection device housing and the leak detection device cover.

[0012] The advantages of the pipeline micro-leakage detection device provided by this utility model are as follows: By incorporating a leak detection structure, gas is first diverted through a three-way pipe. After real-time collection of pressure samples from the pipeline, a solenoid valve is closed to seal and store the samples. The stored pressure value is automatically compared with the pressure inside the pipeline at regular intervals. The sample storage environment is the same as the environment where the pipeline is located, including the same temperature. Therefore, the pressure value is not affected by changes in ambient temperature, resulting in relatively accurate detection results. When a difference occurs between the two pressure values ​​and the set alarm value is reached, the remote transmission module will transmit an alarm signal to the terminal. This enables the device to be unaffected by ambient temperature, thereby improving the applicability of the pipeline micro-leakage detection equipment during use. With a disassembly structure, the cover of the leak detection equipment can be fixed or separated from the outer shell of the leak detection equipment by means of fixing screws and threaded grooves. When one end of the fixing screw is moved to the outside of the outer shell of the leak detection equipment, the cover of the leak detection equipment can be moved to separate it from the outer shell of the leak detection equipment. This facilitates the inspection and maintenance of the inside of the outer shell of the leak detection equipment, thus realizing the function of easy inspection and maintenance of the device and improving the convenience of using the pipeline micro-leakage detection equipment. By incorporating a sealing structure, the sealing ring and the cover of the leak detection equipment are fixed together by the placement groove. The sealing ring deforms under the action of the cavity, thereby filling the gap between the housing and the cover of the leak detection equipment, preventing external liquids, gases, or dust from entering. This improves the sealing performance between the housing and the cover of the leak detection equipment, enabling the device to easily prevent leaks and thus enhancing the sealing performance of the pipeline micro-leakage detection equipment during use. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is a top-view cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a side view of the exploded three-dimensional structure of the sealing structure of this utility model.

[0014] The following are the annotations in the diagram: 1. Leak detection equipment housing; 2. Explosion-proof gland; 3. Leak detection equipment cover; 4. Threaded air supply connector; 5. Leak detection structure; 501. Central processing unit module; 502. First detection air inlet; 503. Second detection air inlet; 504. Second detection port pipe; 505. Air storage chamber; 506. Solenoid valve; 507. Second air pipe valve front pipe; 508. T-junction; 509. Remote transmission module; 6. Battery; 7. Disassembly structure; 701. Fixing screw; 702. Threaded groove; 703. Mounting groove; 8. Sealing structure; 801. Sealing ring; 802. Placement groove; 803. Cavity. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5This utility model provides a pipeline micro-leakage detection device, including a leak detection device housing 1 and an explosion-proof gland 2. The explosion-proof gland 2 is fixed to one end of the leak detection device housing 1, and a threaded gas source connector 4 is fixed to the other end. A leak detection structure 5 is provided inside the leak detection device housing 1. The leak detection structure 5 includes a central processing unit module 501 fixed inside the leak detection device housing 1. A gas storage chamber 505 is fixed to one side of the bottom of the leak detection device housing 1. A solenoid valve 506 is fixed to one side of the gas storage chamber 505, and a second detection port pipe 504 is fixed to the other side of the gas storage chamber 505. A remote transmission module 509 is provided to one side of the central processing unit module 501. A first detection air inlet 502 is provided on one side of the bottom of module 501. A second detection air inlet 503 is provided on one side of the central processing unit module 501 below the first detection air inlet 502. A second air pipe valve front pipe 507 is fixed to the end of the solenoid valve 506 away from the air storage chamber 505. A three-way pipe 508 is fixed to one end of the second air pipe valve front pipe 507. One end of the three-way pipe 508 is fixedly connected to one end of the threaded air source connector 4. The other end of the three-way pipe 508 is fixedly connected to one end of the first detection air inlet 502. One end of the second detection port pipe 504 is fixedly connected to one end of the second detection air inlet 503. The side end of the three-way pipe 508 is fixedly connected to one end of the second detection air inlet 503. Therefore, the air source is through the threaded air source connector 4. Then, passing through the three-way pipe 508, the second air valve pre-pipe 507, and the solenoid valve 506, it reaches the air storage chamber 505, then through the second detection port pipe 504, and finally to the second detection air inlet 503. When the solenoid valve 506 is closed, the pressure in the pipeline is sampled and stored at the point from the air storage chamber 505 to the second detection air inlet 503. The first detection air inlet 502 is connected to the threaded air source connector 4 through the three-way pipe 508, forming the first pipeline for measuring the air source pressure. The straight pipe of the three-way pipe 508 is connected to the first detection air inlet 502 through the connecting pipe, and the side pipe of the three-way pipe 508 is connected to the second detection air inlet 503, forming the pressure sample storage pipeline. The layout and orientation of the module circuit and accessories should be noted. Terms such as "shell shape is not a limiting condition" are subject to change based on the actual application environment. In practical use, the equipment can be manufactured as a portable, battery-powered mobile pipeline micro-leakage detection device according to the needs of the detection scenario. It can be installed in a fixed location or temporarily installed on a mobile device. The leak detection device transmits the monitoring signal to the management platform and mobile app for monitoring or alarm via wireless remote transmission. The shape and internal layout of the device are not limited to the limitations described above and can be set to various geometric shapes according to the on-site usage environment. The internal circuit board can be changed with the shape. The power supply methods for the fixed and temporary installation detection devices can be various, including batteries, mains power, wind power, photovoltaic, pipeline generators, etc.

[0017] Reference Figure 2 As shown, the gas is first diverted through the three-way pipe 508. When the solenoid valve 506 is open, the gas pressure in the gas storage chamber 505 is the same as the gas pressure in the tested pipeline. When the solenoid valve 506 is closed, the pressure sealed in the gas storage chamber 505 is stored as the real-time pressure value of the pipeline. The pressure in the gas storage chamber 505 becomes the reference pressure value of the pipeline pressure. If the pipeline leaks, the pressure in the gas storage chamber 505 remains unchanged, while the pressure in the pipeline will drop due to the leak. At this time, the pressure detected by the first detection inlet 502 will be lower than the pressure detected by the second detection inlet 503. When the pressure difference reaches the set alarm value, the remote transmission module 509 will transmit the alarm signal to the terminal.

[0018] A battery 6 is installed on one side inside the housing 1 of the leak detection equipment. A leak detection equipment cover 3 is installed on one side of the housing 1 of the leak detection equipment. A sealing structure 8 is installed on one side inside the cover 3 of the leak detection equipment. The sealing structure 8 includes a sealing ring 801, a placement groove 802 and a cavity 803. The placement groove 802 is opened on one side inside the cover 3 of the leak detection equipment. The sealing ring 801 is installed inside the placement groove 802. The cavity 803 is installed inside the sealing ring 801. One side of the sealing ring 801 is in contact with one side of the housing 1 of the leak detection equipment.

[0019] Reference Figure 5 As shown, under the action of the placement groove 802, the sealing ring 801 and the leak detection equipment cover 3 are fixed to each other. When the leak detection equipment cover 3 is in contact with the leak detection equipment housing 1, the sealing ring 801 is deformed under the action of the cavity 803, thereby filling the gap between the leak detection equipment housing 1 and the leak detection equipment cover 3, preventing external liquids, gases or dust from entering, thereby improving the sealing performance between the leak detection equipment housing 1 and the leak detection equipment cover 3.

[0020] The inside of the leak detection equipment cover 3 is evenly permeated by disassembly structures 7 on both sides. The disassembly structure 7 includes fixing screws 701, threaded grooves 702 and mounting grooves 703. The mounting grooves 703 are opened on both sides inside the leak detection equipment cover 3. The inside of the leak detection equipment cover 3 on one side of the mounting groove 703 is permeated by threaded grooves 702. The inside of the threaded grooves 702 is permeated by fixing screws 701. One end of the threaded grooves 702 extends into the inside of the leak detection equipment housing 1. The leak detection equipment housing 1 and the leak detection equipment cover 3 are fixedly connected by fixing screws 701.

[0021] Reference Figure 3 and Figure 4As shown, under the action of fixing screw 701 and threaded groove 702, the upper cover 3 of the leak detection equipment is fixed or separated from the outer shell 1 of the leak detection equipment. When one end of fixing screw 701 moves to the outside of the outer shell 1 of the leak detection equipment, the upper cover 3 of the leak detection equipment is moved to separate the upper cover 3 of the leak detection equipment from the outer shell 1 of the leak detection equipment, thereby facilitating the inspection and maintenance of the inside of the outer shell 1 of the leak detection equipment.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipeline micro-leakage detection device, comprising a leak detection device housing (1) and an explosion-proof gland (2); Its features are: One end of the housing (1) of the leak detection equipment is fixed with an explosion-proof gland (2), and the other end of the housing (1) of the leak detection equipment is fixed with a threaded gas source connector (4). The inside of the housing (1) of the leak detection equipment is provided with a leak detection structure (5). The leakage detection structure (5) includes a central processing unit module (501) fixed inside the housing (1) of the leakage detection device. A gas storage chamber (505) is fixed on one side of the bottom of the housing (1) of the leakage detection device. A solenoid valve (506) is fixed on one side of the gas storage chamber (505). A second detection port tube (504) is fixed on the other side of the gas storage chamber (505). A battery (6) is provided on one side inside the housing (1) of the leak detection device. A leak detection device cover (3) is provided on one side of the housing (1) of the leak detection device. A sealing structure (8) is provided on one side inside the cover (3). A disassembly structure (7) is evenly penetrated on both sides inside the cover (3).

2. A pipe micro-leakage detection device according to claim 1, characterized in that: A remote transmission module (509) is provided on one side of the central processing unit module (501). A first detection air inlet (502) is provided on one side of the bottom of the central processing unit module (501). A second detection air inlet (503) is provided on one side of the central processing unit module (501) below the first detection air inlet (502). A second air valve front pipe (507) is fixed to one end of the solenoid valve (506) away from the air storage chamber (505). A three-way pipe (508) is fixed to one end of the second air valve front pipe (507).

3. The pipeline micro-leakage detection device according to claim 2, characterized in that: One end of the three-way pipe (508) is fixedly connected to one end of the threaded air source connector (4), the other end of the three-way pipe (508) is fixedly connected to one end of the first detection air inlet (502), one end of the second detection port pipe (504) is fixedly connected to one end of the second detection air inlet (503), and the side end of the three-way pipe (508) is fixedly connected to one end of the second detection air inlet (503).

4. The pipeline micro-leakage detection device according to claim 1, characterized in that: The disassembly structure (7) includes a fixing screw (701), a threaded groove (702) and a mounting groove (703). The mounting groove (703) is opened on both sides inside the leak detection equipment cover (3). The threaded groove (702) runs through the inside of the leak detection equipment cover (3) on one side of the mounting groove (703). The fixing screw (701) runs through the inside of the threaded groove (702).

5. A pipeline micro-leakage detection device according to claim 4, characterized in that: One end of the threaded groove (702) extends into the interior of the leak detection device housing (1), and the leak detection device housing (1) and the leak detection device cover (3) are fixedly connected by fixing screws (701).

6. The pipeline micro-leakage detection device according to claim 1, characterized in that: The sealing structure (8) includes a sealing ring (801), a placement groove (802) and a cavity (803). The placement groove (802) is located on one side inside the cover (3) of the leak detection equipment. The placement groove (802) is provided with a sealing ring (801) inside, and the sealing ring (801) is provided with a cavity (803) inside.

7. A pipeline micro-leakage detection device according to claim 6, characterized in that: One side of the sealing ring (801) is in contact with one side of the housing (1) of the leak detection device.

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