Pressure pipeline detection device
By designing a pressure pipeline detection device including a transverse detection cylinder, a pneumatic valve and a pressure relief space, the problem of insufficient detection accuracy in the prior art is solved, and a more efficient and safe pressure pipeline detection is achieved.
Patent Information
- Application Number
- CN202421952353.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The existing pressure pipeline detection methods apply pressure from the outside to the inside, and the detection accuracy is insufficient and the internal state of the pressure pipeline cannot be effectively detected.
A pressure pipeline detection device is designed, using a transverse detection cylinder and an air pressure valve to close the pressure pipeline through the cylinder and the pressure plate, and pressurize the pipeline through the air pressure valve to observe the changes in the pressure detection valve to detect leakage. At the same time, the device is equipped with a pressure relief space and a pressure relief valve to avoid explosion of the detection cylinder and provide a containment function to prevent debris from splashing.
It improves the accuracy and safety of pressure pipeline detection, can effectively detect the internal state of the pipeline, prevent leakage and explosion, and protect the safety of the inspectors.
Smart Images
Figure CN223037629U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure pipeline detection, in particular to a pressure pipeline detection device. Background Technique
[0002] A pressure pipeline refers to a tubular device that uses a certain pressure to transport gas or liquid. Its scope is defined as a pipeline with a maximum working pressure greater than or equal to 0.1 MPa, a medium of gas, liquefied gas, steam, or flammable, explosive, toxic, corrosive, or a liquid with a maximum working temperature higher than or equal to the standard boiling point, and a nominal diameter greater than or equal to 50 mm. Its pipeline is mainly used to transport, distribute, mix, separate, discharge, measure, control, and stop the flow of fluids, and is an assembly composed of pipes, pipe fittings, flanges, bolt connections, gaskets, valves, other components or pressure-bearing components, and supports.
[0003] Pressure pipelines are almost everywhere in people's living areas, and most pressure pipelines transport relatively dangerous gases and liquids. Therefore, higher quality requirements are imposed on pressure pipelines. To ensure the quality requirements of pressure pipelines, it is necessary to detect pressure pipelines. In existing pressure pipelines, most use external pressure to the inside to detect the pressure that the pressure pipeline can withstand. However, as is well known, in the operation of pressure pipelines, the expansion force is from the inside to the outside. Therefore, the detection by external pressure is not accurate enough. Based on this, this application proposes a pressure pipeline detection device to solve the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a pressure pipeline detection device.
[0005] The purpose of the utility model is realized through the following technical solutions: A pressure pipeline detection device includes a detection cylinder, which is horizontally placed, with one end open and the other end closed. A fixed cylinder facing inward is installed at the closed end of the detection cylinder, and a pneumatic valve is installed inside it. A resisting plate is installed at the inner side end of the fixed cylinder, with a gap left between it and the inner wall of the detection cylinder. A fixed pipe in a T shape is installed outside the detection cylinder near the closed end. An assembly frame is installed inside the open end of the detection cylinder, and a cylinder is installed in the middle of it. A pressing plate is installed at the output end of the cylinder. A pressure pipeline is placed between the resisting plate and the pressing plate. A cross-shaped assembly frame is installed on one side outside the pressing plate. Reciprocating movable top seats are installed on the outsides of the four sides of the cross-shaped assembly frame, and they are all located inside the pressure pipeline. Sampling valves and pressure inspection valves are respectively installed at the openings at both ends outside the fixed pipe.
[0006] Optionally, a cover is installed inside the fixed cylinder, a connecting pipe is installed on the outside of it, a barometer is installed on the connecting pipe, and the pneumatic valve is installed at the outer end of the connecting pipe.
[0007] Optionally, a gasket is installed on the outer side of the backing plate, and a sealing ring is installed on the outside of the pressing plate.
[0008] Optionally, a gap is left between the backing plate and the closed end of the detection cylinder to form a pressure relief space, and a plurality of pressure relief valves are installed on the outside of the closed end of the detection cylinder, which are located at the pressure relief space.
[0009] Optionally, the four branches of the cross assembly frame are all in the shape of a rectangular frame, and threaded rods are installed inside them, and the four top seats are respectively installed at the outer ends of the four threaded rods.
[0010] The utility model has the following advantages:
[0011] For the pressure pipeline detection device, a horizontally placed detection cylinder is used as the main body. The intercepted pressure pipeline is placed into the detection cylinder. One end of the outside of the detection cylinder is equipped with a pneumatic valve, and the other end is equipped with an assembly frame. A cylinder is installed on the assembly frame, and its output end is equipped with a pressing plate. At one end of the detection cylinder near the inside of the pneumatic valve, a backing plate is installed. The pressure pipeline is located between the backing plate and the pressing plate, and the two of them seal the pressure pipeline. Pressurize the pressure pipeline through the pneumatic valve, and observe the change of the pressure detection valve installed outside the detection cylinder. If there is no change for a long time, it means that the pressure pipeline has no leakage, and the pressure inside the detection cylinder remains unchanged.
[0012] Among them, a gap is left between the backing plate and the detection cylinder to form a pressure relief space. A pressure relief valve is installed on the outside of the detection cylinder. When the pressure pipeline leaks or explodes, etc., the high-pressure gas can escape from the pressure relief valve, avoiding the explosion of the detection cylinder. At the same time, the detection cylinder can enclose the exploded pressure pipeline to avoid the splashing of fragments and cause casualties.
[0013] Among them, a cross assembly frame is installed on one side of the outside of the pressing plate. Its four ends are in a rectangular frame structure. Threaded rods are installed inside the rectangular frame. The outer ends of the threaded rods are all installed with top seats. The four top seats are respectively placed around the inside of the pressure pipeline, which can be used to fix the position of the pressure pipeline, avoid its shaking, and facilitate the assembly and disassembly of pressure pipelines of different sizes. Description of the Drawings
[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model from the first perspective;
[0015] Figure 2 is a schematic diagram of the overall structure of the present utility model from the second perspective;
[0016] Figure 3 is in the present utility model Figure 1 schematic diagram of the internal structure;
[0017] Figure 4Schematic diagram of the overall structure of the detection cylinder in the present utility model;
[0018] Figure 5 Schematic diagram of the internal structure of the detection cylinder in the present utility model;
[0019] Figure 6 Schematic diagram of the overall structure of the combined state of the pressure plate and the cross assembly frame in the present utility model.
[0020] In the figure: 1 - detection cylinder, 2 - air cylinder, 3 - sampling valve, 4 - pressure detection valve, 5 - pressure relief valve, 6 - barometer, 7 - air pressure valve, 8 - assembly frame, 9 - pressure plate, 10 - sealing ring, 11 - cross assembly frame, 12 - cover, 13 - connecting pipe, 14 - sealing gasket, 15 - threaded rod, 16 - top seat, 17 - fixed pipe, 18 - fixed cylinder, 19 - abutting plate. Detailed implementation manners
[0021] The following further describes the present utility model with reference to the accompanying drawings, but the protection scope of the present utility model is not limited to the following.
[0022] As Figures 1 to 6 shown, a pressure pipeline detection device includes a detection cylinder 1, which is horizontally placed, with one end open and the other end closed. A fixed cylinder 18 facing inward is installed at the closed end of the detection cylinder 1, and an air pressure valve 7 is installed inside it. An abutting plate 19 is installed at the inner side end of the fixed cylinder 18, leaving a gap between it and the inner wall of the detection cylinder 1. A fixed pipe 17 in a T shape is installed outside the detection cylinder 1 near the closed end. An assembly frame 8 is installed inside the open end of the detection cylinder 1, and an air cylinder 2 is installed in the middle. The output end of the air cylinder 2 is installed with a pressure plate 9. A pressure pipeline is placed between the abutting plate 19 and the pressure plate 9. A cross assembly frame 11 in an overall cross shape is installed on one side outside the pressure plate 9. Reciprocating top seats 16 are installed on the outer sides of the four sides of the cross assembly frame 11, and they are all located inside the pressure pipeline. Sampling valves 3 and pressure detection valves 4 are respectively installed at the openings at both ends outside the fixed pipe 17.
[0023] As an alternative technical solution of the present utility model, a cover 12 is installed inside the fixed cylinder 18, a connecting pipe 13 is installed on its outer side, a barometer 6 is installed on the connecting pipe 13, and the air pressure valve 7 is installed at the outer end of the connecting pipe 13. The connecting pipe 13 is closed by the cover 12. By installing the air pressure valve 7 and the barometer 6 on the connecting pipe 13, the two can be installed outside the detection cylinder 1, facilitating their maintenance.
[0024] As an alternative technical solution of the present utility model, a sealing gasket 14 is installed on the outer side of the abutting plate 19, and a sealing ring 10 is installed outside the pressure plate 9. By using the sealing gasket 14 and the sealing ring 10, the sealing performance between the combined components can be improved.
[0025] As an alternative technical solution of the present utility model, there is a gap between the bottom plate 19 and the closed end of the detection cylinder 1 to form a pressure relief space. A plurality of pressure relief valves 5 are installed on the outer side of the closed end of the detection cylinder 1, and they are located at the pressure relief space.
[0026] As an alternative technical solution of the present utility model, the four branches of the cross assembly frame 11 are all in a rectangular frame shape, and threaded rods 15 are installed inside them. Four top seats 16 are respectively installed at the outer ends of the four threaded rods 15. By rotating the threaded rods 15, the positions of the top seats 16 can be adjusted so that the four top seats 16 can clamp pressure pipes of different sizes.
[0027] Among them, the sampling valve 3 used can extract the gas inside the detection cylinder 1 to make its interior in a vacuum state or a zero-pressure state, making the detection more accurate. And the pressurized gas used can be a special gas to facilitate random sampling and detection from the sampling valve 3.
[0028] In summary, the features, assembly methods, usage processes, and functions achieved by the various components in the present utility model are as follows: Taking the horizontally placed detection cylinder 1 as the main body, the intercepted pressure pipe is placed inside the detection cylinder 1. One end of the outer side of the detection cylinder 1 is equipped with a pneumatic valve 7, and the other end is equipped with an assembly frame 8. A cylinder 2 is installed on the assembly frame 8, and its output end is equipped with a pressing plate 9. A bottom plate 19 is installed at one end of the detection cylinder 1 close to the pneumatic valve 7. The pressure pipe is located between the bottom plate 19 and the pressing plate 9, and the two of them seal the pressure pipe. Pressurize the pressure pipe through the pneumatic valve 7, and observe the changes of the pressure detection valve 4 installed outside the detection cylinder 1. If there is no change for a long time, it means that the pressure pipe has no leakage, and the pressure inside the detection cylinder 1 remains unchanged. There is a gap between the bottom plate 19 and the detection cylinder 1 to form a pressure relief space. A pressure relief valve 5 is installed on the outer side of the detection cylinder 1. When the pressure pipe leaks or explodes, etc., the high-pressure gas can escape from the pressure relief valve 5 to prevent the detection cylinder 1 from exploding. At the same time, the detection cylinder 1 can enclose the exploded pressure pipe to prevent debris from splashing and causing casualties. A cross assembly frame 11 is installed on one side outside the pressing plate 9. Its four ends are in a rectangular frame structure. Threaded rods 15 are installed inside the rectangular frames. The outer ends of the threaded rods 15 are all equipped with top seats 16. The four top seats 16 are respectively placed around the inside of the pressure pipe and can be used to fix the position of the pressure pipe to prevent it from shaking, facilitating the assembly and disassembly of pressure pipes of different sizes.
[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A pressure pipeline detection device, characterized in that: The invention comprises a detection cylinder (1) which is horizontally placed, with one end open and the other end closed. The closed end of the detection cylinder (1) is provided with an inwardly facing fixed cylinder (18), inside which is provided an air pressure valve (7). The inner side end of the fixed cylinder (18) is provided with a stop plate (19), with a gap between the stop plate and the inner wall of the detection cylinder (1). The outside of the detection cylinder (1) close to the closed end is provided with a fixed tube (17) in a T shape. The inside of the open end of the detection cylinder (1) is provided with an assembly frame (8), wherein the position A cylinder (2) is installed, a pressure plate (9) is installed at the output end of the cylinder (2), a pressure pipeline is placed between the abutment plate (19) and the pressure plate (9), a cross assembly frame (11) which is in a cross shape as a whole is installed on one side of the outside of the pressure plate (9), and reciprocating top seats (16) are installed on the outside of the four sides of the cross assembly frame (11), which are all located inside the pressure pipeline, and a sampling valve (3) and a pressure check valve (4) are respectively installed at the openings at both ends of the outside of the fixed pipe (17).
2. A pressure pipeline detection device according to claim 1, characterized in that: A sealing cover (12) is installed inside the fixed tube (18), and a connecting pipe (13) is installed outside the fixed tube (18). A barometer (6) is installed on the connecting pipe (13), and the air pressure valve (7) is installed at the outer end of the connecting pipe (13).
3. A pressure pipeline detection device according to claim 1, characterized in that: A sealing gasket (14) is installed on the outer side of the abutment plate (19), and a sealing ring (10) is installed on the outer side of the pressure plate (9).
4. A pressure pipeline detection device according to claim 1, characterized in that: A gap is left between the abutment plate (19) and the closed end of the detection tube (1) to form a pressure relief space. A plurality of pressure relief valves (5) are installed on the outside of the closed end of the detection tube (1) and are located in the pressure relief space.
5. A pressure pipeline detection device according to claim 1, characterized in that: The four branches of the cross assembly frame (11) are all in the shape of a rectangular frame, and threaded rods (15) are threadedly installed inside the frame. The four top seats (16) are respectively installed on the outer ends of the four threaded rods (15).