A valve internal leakage diagnosis device

Abstract

This invention provides a valve internal leakage diagnostic device, including a valve body, a hollow support base integrally connected to the middle of the valve body, an internal sealing assembly inside the hollow support base, a rotating handwheel connected to the top of the internal sealing assembly, pipes connected to both sides of the valve body, flanges connected to the ends of the pipes, four sets of mounting holes evenly distributed on the flanges, an adjustable support assembly fitted on the outer wall of the pipes, and an internal leakage detection assembly connected to the side of the adjustable support assembly facing the outer wall of the pipes. This invention has the following advantages: its simple structure eliminates the need to disassemble the valve for inspection, and it can be directly installed outside the valve body, enabling the inspection of a large number of valves, thus avoiding the problem of some valves having internal leaks that are difficult to detect and thus causing leakage.

Description

Technical Field

[0001] This utility model is a valve internal leakage diagnostic device, belonging to the field of valve internal leakage detection technology. Background Technology

[0002] Valves play a crucial role in oil and gas pipelines, performing pressure regulation and media shut-off. Internal leakage in valves primarily occurs at the gate sealing surface. Valve manufacturers employ various measures to reduce internal leakage; for example, gate valves typically use wedge-shaped gate seals, ball valves utilize eccentric or other frictionless spherical structures and metal-to-metal seals, and plug valves employ inverted conical balanced valve core structures. These structures can meet initial sealing requirements. However, with the erosion and corrosion from petrochemical materials and the increased frequency of process control operations, the sealing surface suffers varying degrees of damage, leading to internal leakage.

[0003] Currently, valve internal leakage detection mainly relies on offline testing methods. For example, during a plant shutdown safety inspection, critical valves are disassembled and sent to a professional testing agency for sealing tests. This method is not only demanding, requiring the production unit to be shut down and the valves to be disassembled for testing, but also has limited testing efficiency. Only valves in some key process areas can be tested, and the vast majority of valves in the entire process cannot be sent for testing. Therefore, a large number of valve internal leaks are not detected in a timely manner. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a valve internal leakage diagnosis device.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A valve internal leakage diagnostic device includes a valve body, a hollow support base integrally connected to the middle of the valve body, an internal sealing assembly disposed inside the hollow support base, a rotating handwheel connected to the top of the internal sealing assembly, pipes connected to both sides of the valve body, flanges connected to the ends of the pipes, four sets of mounting holes evenly opened on the flanges, an adjustable support assembly fitted on the outer wall of the pipes, and an internal leakage detection assembly connected to the side of the adjustable support assembly facing the outer wall of the pipes.

[0007] Furthermore, the internal sealing assembly includes a sealing shell located above the hollow support base, with a rotating threaded rod installed through the internal threads of the sealing shell. The top end of the rotating threaded rod is fixedly connected to a rotating handwheel, and the bottom end of the rotating threaded rod is connected to a sealing disc extending into the valve body via a connecting bearing. The sealing disc matches the inner cavity of the hollow support base.

[0008] Furthermore, the outer side of the sealing shell is integrally connected to a connecting frame that matches the hollow support base. Fixed bolts that connect to the hollow support base pass through the four corners of the connecting frame, and a limit nut is fitted at the bottom end of the fixed bolt.

[0009] Furthermore, the adjustable support assembly includes an installation collar fixedly sleeved on the outer wall of the pipe. Both ends of the inner wall of the installation collar are integrally connected with support connecting rings, and an inner cavity is formed between the two support connecting rings and the installation collar. The installation collar is symmetrically provided with arc-shaped guide grooves, and an arc-shaped slide plate is slidably provided on the outer wall of the installation collar. The arc-shaped slide plate is symmetrically provided with limiting screws, and the internal leakage detection assembly is located in the inner cavity and is connected through the center of the arc-shaped guide groove and the arc-shaped slide plate.

[0010] Furthermore, the internal leakage detection component includes a connecting column that is fixedly connected to the arc-shaped sliding plate and movably passes through the arc-shaped guide groove. A limiting stop is fixedly fitted at one end of the connecting column located inside the mounting collar. A mounting base is connected to the bottom end of the connecting column. The bottom end of the mounting base is provided with an arc-shaped bottom surface that matches the outer wall of the pipe. An inner groove is opened on the arc-shaped bottom surface, and an array microphone is installed in the inner groove.

[0011] Furthermore, the interior of the mounting base is divided into three mounting cavities by a T-shaped partition plate. The functional circuit board, signal transmitter, and power module are installed in the three mounting cavities respectively, and the functional circuit board, signal transmitter, and power module are all electrically connected to the array microphone.

[0012] The beneficial effects of this utility model are:

[0013] A hollow support base is integrally connected to the middle of the valve body for the installation of the internal sealing assembly. The rotation of the handwheel allows the internal sealing assembly to seal the valve body. The adjustable support assembly is used to install the internal leakage detection assembly and adjust its position, thus facilitating the detection of internal leaks after the valve body is sealed. The flange and mounting holes facilitate the connection between the valve body and external pipelines. This invention has a simple structure, eliminates the need to disassemble the valve for inspection, and can be directly installed outside the valve body, enabling the inspection of a large number of valves and avoiding the problem of leakage caused by the inconvenience of detecting internal leaks in some valves. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the structure of a valve internal leakage diagnostic device according to the present invention;

[0016] Figure 2 This is a schematic diagram of the internal sealing component in a valve internal leakage diagnostic device according to the present invention;

[0017] Figure 3 This is a schematic diagram of the adjustable support assembly in a valve internal leakage diagnostic device according to the present invention.

[0018] Figure 4 This is a schematic diagram of the internal leakage detection component in a valve internal leakage diagnostic device according to the present invention;

[0019] Figure 5 This is a schematic diagram of the internal structure of the mounting base for a valve internal leakage diagnostic device according to this utility model.

[0020] In the diagram, 1. Valve body; 2. Hollow support base; 3. Internal sealing assembly; 4. Rotary handwheel; 5. Adjustable support assembly; 6. Flange; 7. Mounting hole; 8. Sealing shell; 9. Rotary threaded rod; 10. Connecting bearing; 11. Sealing disc; 12. Connecting frame; 13. Fixing bolt; 14. Limit nut; 15. Mounting collar; 16. Support connecting ring; 17. Internal cavity; 18. Arc-shaped guide groove; 19. Arc-shaped slide plate; 20. Limit screw; 21. Power module; 22. Connecting column; 23. Mounting base; 24. Limit stop plate; 25. Arc-shaped bottom surface; 26. Internal groove; 27. Array microphone; 28. T-shaped partition plate; 29. ​​Functional circuit board; 30. Signal transmitter. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-5This utility model provides a technical solution for a valve internal leakage diagnostic device, including a valve body 1, a hollow support base 2 integrally connected to the middle of the valve body 1, an internal sealing component 3 disposed inside the hollow support base 2, and a rotating handwheel 4 connected to the top of the internal sealing component 3. The hollow support base 2 integrally connected to the middle of the valve body 1 is used for the installation of the internal sealing component 3. The rotation of the rotating handwheel 4 can make the internal sealing component 3 seal the valve body 1. Pipes are connected to both sides of the valve body 1, and flanges 6 are connected to the ends of the pipes. Four sets of mounting holes 7 are evenly opened on the flanges 6. An adjustable support component 5 is fitted on the outer wall of the pipes. An internal leakage detection component is connected to the side of the adjustable support component facing the outer wall of the pipes. The adjustable support component 5 is used to install the internal leakage detection component and can adjust the position of the internal leakage detection component, thereby facilitating the detection of the location of internal leakage after the valve body 1 is sealed. The flanges 6 and mounting holes 7 facilitate the connection between the valve body 1 and the external pipes.

[0023] See Figure 2 The inner sealing assembly 3 includes a sealing shell 8 located above the hollow support base 2. A rotating threaded rod 9 is threaded through the interior of the sealing shell 8. The top end of the rotating threaded rod 9 is fixedly connected to a rotating handwheel 4, and the bottom end of the rotating threaded rod 9 is connected via a connecting bearing 10 to a sealing disc 11 extending into the valve body 1. The sealing disc 11 matches the inner cavity of the hollow support base 2. A connecting frame 12, matching the hollow support base 2, is integrally connected to the outer side of the sealing shell 8. Fixing bolts 13, connected to the hollow support base 2, pass through the four corners of the connecting frame 12. Limiting nuts 14 are fitted onto the bottom ends of the fixing bolts 13. By rotating the rotating handwheel 4, the rotating threaded rod 9 rotates, and with the cooperation of the connecting bearing 10, the sealing disc 11 seals the hollow support base 2, thereby achieving the sealing operation of the valve body 1. The fixing bolts 13, in conjunction with the limiting nuts 14, secure the hollow support base 2 to the connecting frame 12.

[0024] See Figure 3 The adjustable support assembly 5 includes an installation collar 15 fixedly sleeved on the outer wall of the pipe. Support connecting rings 16 are integrally connected to both ends of the inner wall of the installation collar 15, forming an inner cavity 17 between the two support connecting rings 16 and the installation collar 15. The installation collar 15 has symmetrically formed arc-shaped guide grooves 18, and an arc-shaped sliding plate 19 is slidably provided on the outer wall of the installation collar 15. Limiting screws 20 are symmetrically provided on the arc-shaped sliding plate 19. The internal leakage detection assembly is located within the inner cavity 17 and connects to the center of the arc-shaped guide grooves 18 and the arc-shaped sliding plate 19. The installation collar 15 is installed outside the valve body 1. During adjustment, the limiting screws 20 are loosened, allowing the arc-shaped sliding plate 19 to slide outside the installation collar 15, thereby enabling the internal leakage detection assembly to move and achieve accurate detection.

[0025] SeeFigures 4-5 The internal leakage detection component includes a connecting post 22 that is fixedly connected to the arc-shaped slide plate 19 and movably passes through the arc-shaped guide groove 18. A limiting baffle 24 is fixedly sleeved on one end of the connecting post 22 located inside the mounting collar 15. A mounting base 23 is connected to the bottom end of the connecting post 22. An arc-shaped bottom surface 25 that matches the outer wall of the pipe is provided at the bottom end of the mounting base 23. An inner groove 26 is provided on the arc-shaped bottom surface 25. An array microphone 27 is installed in the inner groove 26. The interior of the mounting base 23 is divided into three mounting cavities by a T-shaped partition plate 28. A functional circuit board 29, a signal transmitter 30, and a power module 21 are installed in the three mounting cavities respectively. The functional circuit board 29, the signal transmitter 30, and the power module 21 are all electrically connected to the array microphone 27. The array microphone 27 is powered by the power module 21, and the signal transmitter 30 is used to transmit the audio signal of the microphone. The bottom end of the mounting base 23 is always in contact with the outer wall of the pipe through the arc-shaped bottom surface 25, so that the inner groove 26 forms a detection cavity, and the internal leakage of the valve is detected by the array microphone 27.

[0026] In use, a hollow support base 2 is integrally connected to the middle of the valve body 1 for the installation of the inner sealing assembly 3. The rotation of the rotating handwheel 4 allows the inner sealing assembly 3 to seal the valve body 1. The adjustable support assembly 5 is used to install the internal leakage detection assembly and adjust its position, thus facilitating the detection of internal leakage after the valve body 1 is sealed. The flange 6, in conjunction with the mounting hole 7, facilitates the connection between the valve body 1 and external pipelines. This utility model has a simple structure, eliminates the need to disassemble the valve for inspection, and can be directly installed on the outside of the valve body 1, enabling the inspection of a large number of valves and avoiding the problem of leakage caused by the inconvenience of detecting internal leakage in some valves.

[0027] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve internal leakage diagnostic device, characterized in that, The valve body (1) is integrally connected to a hollow support base (2) in the middle of the valve body (1). An internal sealing assembly (3) is provided inside the hollow support base (2). A rotating handwheel (4) is connected to the top of the internal sealing assembly (3). Pipes are connected to both sides of the valve body (1). A flange (6) is connected to the end of the pipe. Four sets of mounting holes (7) are evenly opened on the flange (6). An adjustable support assembly (5) is fitted on the outer wall of the pipe. An internal leakage detection assembly is connected to the side of the adjustable support assembly (5) facing the outer wall of the pipe.

2. A valve internal leakage diagnostic device according to claim 1, characterized in that, The inner sealing assembly (3) includes a sealing shell (8) located above the hollow support (2). A rotating threaded rod (9) is installed through the internal thread of the sealing shell (8). The top end of the rotating threaded rod (9) is fixedly connected to a rotating handwheel (4). The bottom end of the rotating threaded rod (9) is connected to a sealing disc (11) extending into the valve body (1) via a connecting bearing (10). The sealing disc (11) matches the inner cavity of the hollow support (2).

3. A valve internal leakage diagnostic device according to claim 2, characterized in that, The outer side of the sealing shell (8) is integrally connected to a connecting frame (12) that matches the hollow support base (2). The four corners of the connecting frame (12) are connected to the fixing bolts (13) that are connected to the hollow support base (2). The bottom end of the fixing bolts (13) is fitted with a limiting nut (14).

4. A valve internal leakage diagnostic device according to claim 3, characterized in that, The adjustable support assembly (5) includes an installation collar (15) fixedly sleeved on the outer wall of the pipe. Both ends of the inner wall of the installation collar (15) are integrally connected with support connecting rings (16). An inner cavity (17) is formed between the two support connecting rings (16) and the installation collar (15). A curved guide groove (18) is symmetrically opened on the installation collar (15). A curved slide plate (19) is slidably provided on the outer wall of the installation collar (15). A limiting screw (20) is symmetrically provided on the curved slide plate (19). The internal leakage detection assembly is located in the inner cavity (17) and is connected through the center of the curved guide groove (18) and the curved slide plate (19).

5. A valve internal leakage diagnostic device according to claim 4, characterized in that, The internal leakage detection component includes a connecting column (22) that is fixedly connected to the arc-shaped slide (19) and movably passes through the arc-shaped guide groove (18). A limiting plate (24) is fixedly sleeved on one end of the connecting column (22) located inside the mounting collar (15). A mounting base (23) is connected to the bottom end of the connecting column (22). An arc-shaped bottom surface (25) that matches the outer wall of the pipe is provided at the bottom end of the mounting base (23). An inner groove (26) is opened on the arc-shaped bottom surface (25). An array microphone (27) is installed in the inner groove (26).

6. A valve internal leakage diagnostic device according to claim 5, characterized in that, The interior of the mounting base (23) is divided into three mounting cavities by a T-shaped partition plate (28). The functional circuit board (29), the signal transmitter (30), and the power module (21) are installed in the three mounting cavities respectively. The functional circuit board (29), the signal transmitter (30), and the power module (21) are all electrically connected to the array microphone (27).

Images