Pipeline quality detection device
By combining an air pump and an annular airbag with a remote-controlled internal auxiliary moving structure, the problem of time-consuming pipeline interface inspection and water waste in traditional water conservancy projects has been solved, achieving efficient, convenient and accurate pipeline interface airtightness inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG WATER CONSERVANCY ARCHITECTURE DESIGN & RES INST CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-05
AI Technical Summary
In traditional water conservancy projects, pipeline interface inspection is time-consuming and wastes water resources, and traditional inspection methods are cumbersome to operate.
It employs an air pump, an annular airbag, and a remote-controlled internal auxiliary moving structure. The annular airbag is used to test the sealing of the pipe joints, and the pressure gauge is used to observe pressure changes to determine the airtightness.
It enables water-saving, efficient, and convenient pipe joint airtightness testing, improving the accuracy of testing and ease of operation.
Smart Images

Figure CN224202685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water conservancy pipeline inspection technology, specifically a pipeline quality inspection device. Background Technology
[0002] Pipeline systems are indispensable in water conservancy projects. Due to the need for convenient processing and transportation, pipelines have certain length requirements. In actual use, various pipelines are spliced together. Since splicing is used instead of integral molding, the joints of the pipelines need to be tested for sealing to ensure the delivery effect and prevent leakage. Traditional testing involves introducing water and ice into the pipeline to pressurize and maintain pressure, and then observing the joints for leakage. This wastes a lot of water resources and is cumbersome and time-consuming. Utility Model Content
[0003] In view of the problems existing in the prior art, this utility model discloses a pipeline quality inspection device. The technical solution adopted includes an air pump, which is a commonly used air pump. The specification of the hose connected to the output end of the air pump can be selected so that it can be smoothly connected to the middle air inlet and the inflation port. According to the actual situation, conventional accessories such as sealing rings can be added to improve the stability and inflation effect during the inflation process. The remaining parts also include a detection tube, end rings, an inner sealing structure, a middle air inlet, a pressure gauge, a remote control, and an internal auxiliary moving structure. The front and rear ends of the detection tube are integrally formed with end rings. The inner wall of the end ring is provided with an inner sealing structure. A middle air inlet is set on the detection tube, and a pressure gauge is installed. The sensing end of the pressure gauge is placed inside the detection tube. When in use, The detection tube and end ring are both fitted onto the pipe and moved to the interface. A remote control is installed on the outer wall of the detection tube, and an internal auxiliary moving structure is installed inside. The remote control drives the internal auxiliary moving structure, which allows the detection tube to move stably along the pipe. An air pump inflates the middle air inlet and the sealing structure inside the ring. Inflating the sealing structure inside the ring ensures a seal between the end ring and the outer wall of the pipe. Inflating the middle air inlet pressurizes and maintains pressure in the area between the outer wall of the pipe and the detection tube. The pressure change on the pressure gauge is then observed. If there is an air leak at the pipe interface, the pressure reading on the pressure gauge will gradually decrease, thus achieving airtightness detection at the pipe interface and reducing water waste.
[0004] As a preferred technical solution of this utility model, the inner sealing structure includes an inner wall annular groove, an annular airbag, and an inflation tube. The annular airbag is fixed in the inner wall annular groove of the end ring. The outer wall of the annular airbag is attached to the inner side of the inner wall annular groove. An inflation tube is provided on the end ring. The air outlet end of the inflation tube extends into the inner wall annular groove and communicates with the annular airbag. The air outlet end of the inflation pump is connected to a hose. The hose is manually connected to the inflation tube to inflate the annular airbag. The deformation of the annular airbag compresses the outer wall of the pipe to achieve a seal.
[0005] As a preferred technical solution of this utility model, both the inflation tube and the upper opening of the middle air inlet are sealed with sealing plugs, which are rubber sealing plugs.
[0006] As a preferred technical solution of this utility model, the internal auxiliary moving structure includes an inner wall mounting plate, an internal electric push rod, an internal mounting frame, and internal pulleys. The inner wall of the detection tube is integrally formed with an inner wall mounting plate. A battery and a remote signal receiver are provided inside the inner wall mounting plate. The internal electric push rod is installed on the inner side of the inner wall mounting plate. The internal electric push rod is powered by a battery and controlled by a remote controller through the remote signal receiver. The output shaft end of the internal electric push rod is fixed to the internal mounting frame. Several internal pulleys are rotatably installed in the internal mounting frame.
[0007] As a preferred technical solution of this utility model, the surface of the internal pulley is covered with a layer of wear-resistant material.
[0008] The beneficial effects of this utility model are as follows: This pipeline quality inspection device adopts an externally inflatable pressurized testing method for the annular space, completely replacing the traditional water-consuming water pressure testing method, achieving the goals of water conservation, environmental protection, high efficiency, and convenience. Its annular airbag dynamic sealing technology ensures the reliability of the inspection, while the remote-controlled internal auxiliary moving structure greatly improves the convenience of operation and positioning stability. The overall design has a high degree of integration, simplified operation steps, and can accurately locate and inspect pipeline interfaces, significantly improving the efficiency and economy of airtightness testing for pipeline interfaces in water conservancy projects. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a schematic diagram of the left side structure of this utility model;
[0011] Figure 3 This is a cross-sectional structural diagram of the present invention.
[0012] In the diagram: 1. Detection tube; 2. End ring; 3. Inner wall annular groove; 4. Annular airbag; 5. Inflation tube; 6. Middle air inlet; 7. Sealing plug; 8. Pressure gauge; 9. Remote control; 10. Inner wall mounting plate; 11. Internal electric push rod; 12. Internal mounting frame; 13. Internal pulley. Detailed Implementation
[0013] Example 1
[0014] like Figures 1 to 3As shown, this utility model discloses a pipeline quality inspection device. The technical solution adopted includes an air pump, an inspection tube 1, an end ring 2, an inner sealing structure, a central air inlet 6, a pressure gauge 8, a remote control 9, and an internal auxiliary moving structure. The front and rear ends of the inspection tube 1 are integrally formed with the end ring 2. The inner wall of the end ring 2 is provided with an inner sealing structure. The central air inlet 6 is provided on the inspection tube 1.
[0015] Pressure gauge 8 is installed, with its sensing end placed inside detection tube 1. Remote control 9 is installed on the outer wall of detection tube 1, and an internal auxiliary moving structure is installed inside. Remote control 9 drives the internal auxiliary moving structure, and an air pump inflates the central air inlet 6 and the inner ring sealing structure.
[0016] As a preferred technical solution of this utility model, the inner sealing structure seals both ends of the detection tube to ensure the accuracy of subsequent airtightness testing. Specifically, an annular airbag 4 is fixed in an annular groove 3 on the inner wall of the end ring 2. The outer wall of the annular airbag 4 is attached to the inner side of the annular groove 3. An inflation tube 5 is provided on the end ring 2. The air outlet end 41 of the inflation tube 5 extends into the annular groove 3 and communicates with the annular airbag 4.
[0017] As a preferred technical solution of this utility model, both the inflation tube 5 and the upper opening of the middle air inlet 6 are sealed with sealing plugs 7, which are rubber sealing plugs.
[0018] As a preferred technical solution of this utility model, the internal auxiliary moving structure enables the detection tube to move stably outside the pipeline. Specifically, an inner wall mounting plate 10 is integrally formed on the inner wall of the detection tube 1. A battery and a remote signal receiver are provided inside the inner wall mounting plate 10. An internal electric push rod 11 is installed on the inner side of the inner wall mounting plate 10. The internal electric push rod 11 is powered by the battery and controlled by a remote controller 9 through the remote signal receiver. The output shaft end of the internal electric push rod 11 is fixed to the internal mounting frame 12. Several internal pulleys 13 are rotatably installed in the internal mounting frame 12.
[0019] As a preferred technical solution of this utility model, the surface of the internal pulley 13 is covered with a layer of wear-resistant material.
[0020] The working principle of this utility model is as follows: In use, the detection tube is sleeved on the outside of the pipe. To facilitate its movement to the pipe interface, the internal electric push rod is activated by remote control, which moves the internal mounting frame so that the internal pulley contacts the outer wall of the pipe. Then, the detection tube is manually pushed so that the pipe interface is located in the middle of the detection tube. Then, an air pump is used to inflate the annular airbag to seal both ends of the detection tube. After inflation and sealing, a sealing plug is used to seal the inflation tube. Inflating the middle air inlet can pressurize and maintain pressure in the area between the outer wall of the pipe and the detection tube. Then, the pressure change of the pressure gauge is observed. If there is air leakage at the pipe interface, the pressure reading on the pressure gauge will gradually decrease, thereby realizing the airtightness detection at the pipe interface and reducing water waste.
[0021] Components not described in detail in this article are existing technologies.
[0022] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. A pipeline quality inspection device, comprising an air pump, characterized in that: The device includes a detection tube (1), an end ring (2), an inner sealing structure, a central air inlet (6), a pressure gauge (8), a remote controller (9), and an internal auxiliary moving structure. The front and rear ends of the detection tube (1) are integrally formed with end rings (2), and the inner wall of the end ring (2) is provided with an inner sealing structure. The central air inlet (6) is provided on the detection tube (1), and a pressure gauge (8) is installed thereon. The sensing end of the pressure gauge (8) is placed inside the detection tube (1). The remote controller (9) is provided on the outer wall of the detection tube (1), and an internal auxiliary moving structure is provided inside. The remote controller (9) drives the internal auxiliary moving structure. The air pump inflates the central air inlet (6) and the inner sealing structure.
2. The pipeline quality inspection device according to claim 1, characterized in that: The inner sealing structure includes an inner wall annular groove (3), an annular airbag (4), and an inflation tube (5); the inner wall of the end ring (2) has an inner wall annular groove (3) in which the annular airbag (4) is fixed, and the outer wall of the annular airbag (4) is attached to the inner side of the inner wall annular groove (3); the end ring (2) is provided with an inflation tube (5), and the air outlet end (41) of the inflation tube (5) extends into the inner wall annular groove (3) and communicates with the annular airbag (4).
3. The pipeline quality inspection device according to claim 2, characterized in that: Both the inflation tube (5) and the upper opening of the middle air inlet (6) are sealed with sealing plugs (7).
4. The pipeline quality inspection device according to claim 3, characterized in that: The sealing plug (7) is a rubber sealing plug.
5. A pipeline quality inspection device according to claim 1, characterized in that: The internal auxiliary moving structure includes an inner wall mounting plate (10), an internal electric push rod (11), an internal mounting frame (12), and internal pulleys (13); the inner wall of the detection tube (1) is integrally formed with an inner wall mounting plate (10), and a battery and a remote signal receiver are provided inside the inner wall mounting plate (10). The internal electric push rod (11) is installed on the inner side of the inner wall mounting plate (10). The internal electric push rod (11) is powered by a battery and controlled by a remote controller (9) through a remote signal receiver; the output shaft end of the internal electric push rod (11) is fixed to the internal mounting frame (12); several internal pulleys (13) are rotatably installed in the internal mounting frame (12).
6. A pipeline quality inspection device according to claim 5, characterized in that: The surface of the internal pulley (13) is covered with a layer of wear-resistant material.