Casing annulus safety valve

Abstract

The utility model discloses a casing annulus safety valve which comprises a safety valve body and a hydraulic machine, the bottom face of the hydraulic machine is fixedly connected with a base, the upper surface of the hydraulic machine is fixedly connected with a hydraulic oil pump, and the front face of the hydraulic oil pump is fixedly communicated with a high-pressure oil pipe. The end, away from the hydraulic oil pump, of the high-pressure oil pipe communicates with a safety valve body, the back face of the safety valve body fixedly communicates with an output connecting sleeve, and the bottom face of the safety valve body fixedly communicates with an input connecting sleeve. Under the action of hydraulic oil pressure, the piston moves downwards and compresses the spring, and the valve clack is driven to move downwards along with downward movement of the piston, so that the safety valve is opened, fluid can flow in from the input connecting sleeve and flow out from the output connecting sleeve, and the flow of the fluid can be controlled at the critical moment when the fluid flow needs to be controlled. And fluid can be conducted or blocked in time, a powerful guarantee is provided for stable work of the casing annulus safety valve, and the casing annulus safety valve is very practical.

Description

Technical Field

[0001] The present application relates to the field of safety valves, and in particular to a casing annulus safety valve. Background Art

[0002] A safety valve is an automatic valve used to protect pressure vessels or piping systems from damage due to overpressure. When the pressure in the system exceeds the set value, the safety valve will automatically open to release the pressure to prevent dangerous situations such as container or pipeline rupture and explosion caused by excessive pressure. Safety valves are very important safety devices in pressure vessels and piping systems and are widely used in chemical, petroleum, electric power, nuclear industry, pharmaceuticals, food processing and other industries. The casing annulus safety valve is a special type of safety valve, which is specially designed for pressure control in the casing annulus (the space between the casing and the well wall).

[0003] In the process of exploitation of resources such as oil and natural gas, pressure control of casing annulus is of vital importance. As a key safety device, the performance and reliability of casing annulus safety valve are directly related to the safe operation of the entire mining system. When using conventional casing annulus safety valves, the pressure control method is not precise enough, and it is difficult to achieve rapid and accurate adjustment of the safety valve state, resulting in the inability to effectively block the fluid flow in an emergency, thereby increasing safety risks. Therefore, it is necessary to provide a casing annulus safety valve to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a casing annulus safety valve to solve the problems raised in the above background technology.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] and a tube connecting the dischar e side of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug.

[0007] Preferably, the front side and the back side of the base are both fixedly connected with mounting blocks, and the upper surface of each mounting block is threadedly connected with a fixing pin.

[0008] Preferably, a mounting groove is provided on the front of the hydraulic press, and a master control switch is clamped on the inner wall of the mounting groove.

[0009] Preferably, an operation panel is fixedly connected to the upper surface of the hydraulic press, a mounting plate is fixedly connected to the upper surface of the hydraulic press, and a group of instrument panels is fixedly connected to the upper surface of the mounting plate.

[0010] Preferably, an identification plate is provided on the back of the hydraulic press, and the front of the identification plate is fixedly connected to the back of the hydraulic press.

[0011] Preferably, a group of lamp holders are fixedly connected to the back of the hydraulic press, and a status display light is fixedly connected to the inner wall of each lamp holder.

[0012] Preferably, a warning sign is fixedly connected to the front of the safety valve body.

[0013] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0014] First, through the operation panel, the working parameters of the hydraulic oil pump can be set, and the instrument panel on the mounting plate can be observed at the same time to ensure the normal operation of the hydraulic system. The hydraulic oil pump then delivers the hydraulic oil to the safety valve body through the high-pressure oil pipe. Accurately setting the working parameters helps to more accurately control the opening and closing timing of the safety valve, thereby achieving fine adjustment of the fluid and providing strong guarantees for the stable operation of the casing annulus safety valve.

[0015] Secondly, under the action of hydraulic oil pressure, the piston moves downward and compresses the spring. As the piston moves downward, the valve disc also moves downward, thereby opening the safety valve and allowing the fluid to flow in from the input connecting sleeve and out from the output connecting sleeve. This allows the fluid to be conducted or blocked in time at critical moments when the fluid flow needs to be controlled, ensuring precise control of the system. At the same time, by adjusting the pressure of the hydraulic oil, the movement distance and speed of the piston can be precisely controlled, thereby adjusting the degree of opening of the valve disc, so that the safety valve can adapt to working conditions with different flow requirements, achieve precise adjustment of the fluid flow, and meet the diverse operating requirements of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1Schematic diagram of the three-dimensional structure of the casing annulus safety valve of the utility model;

[0018] Figure 2 Schematic diagram of the three-dimensional structure of the casing annulus safety valve according to the present invention from a rear perspective;

[0019] Figure 3 The following is a front cross-sectional view of the safety valve body in the casing annulus safety valve of the utility model;

[0020] Figure 4 For: The utility model casing annulus safety valve Figure 3 Schematic diagram of the structure at point A in the middle.

[0021] In the figure: 1. Safety valve body; 2. Hydraulic press; 3. Hydraulic oil pump; 4. Base; 5. Mounting block; 6. Fixing pin; 7. Mounting slot; 8. Master control switch; 9. Operation panel; 10. Mounting plate; 11. Instrument panel; 12. High-pressure oil pipe; 13. Pressure sensor; 14. Sealing plug; 15. Adjusting nut; 16. Warning sign; 17. Identification plate; 18. Lamp holder; 19. Status indicator light; 20. Input connecting sleeve; 21. Output connecting sleeve; 22. Piston; 23. Spring; 24. Valve disc; 25. Groove. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] The following describes in detail the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0024] See also Figure 1-4 , this utility model provides a casing annulus safety valve technical solution:

[0025] A casing annulus safety valve comprises a safety valve body 1 and a hydraulic press 2. The bottom surface of the hydraulic press 2 is fixedly connected to a base 4. The upper surface of the hydraulic press 2 is fixedly connected to a hydraulic oil pump 3. The front surface of the hydraulic oil pump 3 is fixedly connected to a high-pressure oil pipe 12. The end of the high-pressure oil pipe 12 away from the hydraulic oil pump 3 is connected to the safety valve body 1. The back surface of the safety valve body 1 is fixedly connected to an output connection sleeve 21. The bottom surface of the safety valve body 1 is fixedly connected to an input connection sleeve 20. The outer surface of the output connection sleeve 21 is connected to the input connection sleeve 21. The outer surface of the sleeve 20 is provided with a group of mounting holes. The upper surface of the safety valve body 1 is threadedly connected with a sealing plug 14. The upper surface of the sealing plug 14 is fixedly connected with an adjusting nut 15. The bottom surface of the sealing plug 14 is provided with a groove 25. The inner wall of the groove 25 is fixedly connected with a pressure sensor 13. The inner wall of the safety valve body 1 is slidably connected with a piston 22. The inner wall of the safety valve body 1 is clamped with a spring 23. The bottom surface of the piston 22 is fixedly connected to the top of the spring 23. The inner wall of the safety valve body 1 is slidably connected with a valve disc. 24. The upper surface of the valve disc 24 is fixedly connected to the bottom end of the spring 23. The working parameters of the hydraulic oil pump 3 are set through the operation panel 9, and the instrument panel 11 on the mounting plate 10 is observed to ensure the normal operation of the hydraulic system. Then the hydraulic oil pump 3 delivers the hydraulic oil to the safety valve body 1 through the high-pressure oil pipe 12. After the hydraulic oil enters the safety valve body 1, under the action of the hydraulic oil pressure, the piston 22 moves downward and compresses the spring 23. As the piston 22 moves downward, the valve disc 24 also moves downward, thereby opening the safety valve, allowing the fluid to flow in from the input connecting sleeve 20 and flow out from the output connecting sleeve 21. At the critical moment when the fluid flow needs to be controlled, the fluid can be conducted or blocked in time to ensure precise control of the system. At the same time, by adjusting the pressure of the hydraulic oil, the moving distance and speed of the piston 22 can be precisely controlled, and then the opening degree of the valve disc 24 can be adjusted, so that the safety valve can adapt to working conditions with different flow requirements, realize precise adjustment of the fluid flow, and meet the diversified operation requirements of the system.

[0026] In this embodiment, the front and back sides of the base 4 are fixedly connected with mounting blocks 5, and the upper surface of each mounting block 5 is threadedly connected with a fixing pin 6. The setting of the mounting block 5 can facilitate the installation of the device by the staff. The front side of the hydraulic press 2 is provided with a mounting groove 7, and the inner wall of the mounting groove 7 is clamped with a master control switch 8. The start and stop of the device can be controlled by the set master control switch 8. The upper surface of the hydraulic press 2 is fixedly connected with an operating panel 9, and the upper surface of the hydraulic press 2 is fixedly connected with a mounting plate 10. The upper surface of the mounting plate 10 is fixedly connected with a group of instrument panels 11. The setting of the operating panel 9 can facilitate the operation of the device by the staff.

[0027] In this embodiment, an identification plate 17 is provided on the back of the hydraulic press 2, and the front of the identification plate 17 is fixedly connected to the back of the hydraulic press 2. The identification plate 17 can improve the recognition of the device. A group of lamp holders 18 are fixedly connected to the back of the hydraulic press 2, and the inner wall of each lamp holder 18 is fixedly connected to a status display light 19. The status display light 19 can facilitate the staff to understand the operating status of the device. A warning sign 16 is fixedly connected to the front of the safety valve body 1. The warning sign 16 can be used to warn unrelated personnel to avoid accidental touch.

[0028] Working principle: When the casing annulus safety valve is used, the user first fixes the hydraulic press 2 in a suitable position through the mounting block 5 and the fixing pin 6 on the base 4, and then connects the input connecting sleeve 20 and the output connecting sleeve 21 of the safety valve body 1 to the pipeline to be controlled respectively, and fixes them through the mounting holes with bolts, etc., and then sets the working parameters of the hydraulic oil pump 3 through the operation panel 9, and observes the instrument panel 11 on the mounting plate 10 to ensure the normal operation of the hydraulic system. Then the hydraulic oil pump 3 delivers the hydraulic oil to the safety valve body 1 through the high-pressure oil pipe 12. After the hydraulic oil enters the safety valve body 1, under the action of the hydraulic oil pressure, the piston 22 moves downward and compresses the spring 23. As the piston 22 moves downward, the valve disc 24 is also driven to move downward, thereby opening the safety valve, allowing the fluid to flow in from the input connecting sleeve 20 and out from the output connecting sleeve 21.

[0029] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A casing annulus safety valve, comprising a safety valve body (1) and a hydraulic press (2), characterized in that: The bottom surface of the hydraulic machine (2) is fixedly connected to a base (4), the upper surface of the hydraulic machine (2) is fixedly connected to a hydraulic oil pump (3), the front surface of the hydraulic oil pump (3) is fixedly connected to a high-pressure oil pipe (12), the end of the high-pressure oil pipe (12) away from the hydraulic oil pump (3) is connected to the safety valve body (1), the back surface of the safety valve body (1) is fixedly connected to an output connecting sleeve (21), the bottom surface of the safety valve body (1) is fixedly connected to an input connecting sleeve (20), the outer surface of the output connecting sleeve (21) and the outer surface of the input connecting sleeve (20) are both provided with a group of mounting holes, the upper surface of the safety valve body (1) is fixedly connected to the output connecting sleeve (21). A sealing plug (14) is connected to the surface through a thread, an adjusting nut (15) is fixedly connected to the upper surface of the sealing plug (14), a groove (25) is provided on the bottom surface of the sealing plug (14), a pressure sensor (13) is fixedly connected to the inner wall of the groove (25), a piston (22) is slidably connected to the inner wall of the safety valve body (1), a spring (23) is clamped on the inner wall of the safety valve body (1), the bottom surface of the piston (22) is fixedly connected to the top end of the spring (23), a valve flap (24) is slidably connected to the inner wall of the safety valve body (1), and the upper surface of the valve flap (24) is fixedly connected to the bottom end of the spring (23).

2. The casing annulus safety valve according to claim 1, characterized in that: The front side of the base (4) and the back side of the base (4) are both fixedly connected with mounting blocks (5), and the upper surface of each mounting block (5) is threadedly connected with a fixing pin (6).

3. The casing annulus safety valve according to claim 1, characterized in that: A mounting groove (7) is provided on the front of the hydraulic press (2), and a master control switch (8) is clamped on the inner wall of the mounting groove (7).

4. The casing annulus safety valve according to claim 1, characterized in that: An operating panel (9) is fixedly connected to the upper surface of the hydraulic press (2), a mounting plate (10) is fixedly connected to the upper surface of the hydraulic press (2), and a set of instrument panels (11) are fixedly connected to the upper surface of the mounting plate (10).

5. The casing annulus safety valve according to claim 1, characterized in that: An identification plate (17) is provided on the back of the hydraulic press (2), and the front of the identification plate (17) is fixedly connected to the back of the hydraulic press (2).

6. The casing annulus safety valve according to claim 1, characterized in that: A group of lamp holders (18) are fixedly connected to the back of the hydraulic press (2), and a status display light (19) is fixedly connected to the inner wall of each lamp holder (18).

7. The casing annulus safety valve according to claim 1, characterized in that: A warning sign (16) is fixedly connected to the front of the safety valve body (1).

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