High-temperature and high-pressure sulfur-resistant throttle valve forge piece

Abstract

The utility model discloses a high-temperature high-pressure sulfur-resistant throttle valve forge piece, which relates to the technical field of throttle valves, and comprises a throttle valve main body, a sealing assembly, a valve assembly and a connecting flange plate, the sealing assembly comprises a sealing upper cover, the sealing upper cover is fixed on the top of the throttle valve main body in a threaded manner, the valve assembly comprises a sealing valve body and a connecting rod, and the connecting rod is fixed on the sealing upper cover. The connecting rod is fixedly installed on the top of the sealing valve body, and the connecting flange plate is fixedly connected to the bottom end of the throttling valve body. Under the combined action of the sealing upper cover, the sealing screw rod, the sealing block and the sleeve, the valve cage is fixed through the sleeve, then the sleeve is fixed through the sealing block and the sealing screw rod, and then the sealing upper cover is connected with the throttle valve main body through the fixing bolt, so that the throttle valve is simple to assemble and maintain, and the cost is reduced. And the throttle valve can be opened only by taking down the fixing bolt and the sealing screw rod, so that the interior of the throttle valve is convenient to replace and maintain, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of throttle valve technology, specifically to a high-temperature, high-pressure sulfur-resistant throttle valve forging. Background Technology

[0002] In the production and transportation of oil and gas in oil and gas fields, high-pressure oil and gas at the wellhead need to be throttled and reduced to the specified design pressure using a throttle valve. In the past, throttle valves were generally used for throttling and pressure reduction. A sulfur-resistant throttle valve would fail in less than six months in a high-pressure, low-yield sulfur-containing oil and gas well, and sometimes even less.

[0003] The existing anti-sulfur throttling valve shell and valve body are usually connected by a rigid snap-fit ​​to hold the valve body in the shell. This connection method requires high precision, is inconvenient to assemble, and is difficult for operators to replace or repair when damaged due to the complicated operation.

[0004] To address this problem, this application provides a high-temperature, high-pressure sulfur-resistant throttling valve forging. Utility Model Content

[0005] The purpose of this utility model is to provide a high-temperature and high-pressure anti-sulfur throttling valve forging to solve the problems mentioned in the background art, which are that the anti-sulfur throttling valve shell and body are usually rigidly connected to the body, making it inconvenient to assemble the throttling valve, and difficult to replace and repair when damaged, resulting in poor performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A high-temperature, high-pressure sulfur-resistant throttling valve forging includes a throttling valve body, a sealing assembly, a valve assembly, and a connecting flange. The sealing assembly is fixedly installed inside the throttling valve body, and the valve assembly is also fixedly installed inside the throttling valve body. The sealing assembly includes a sealing cover threadedly fixed to the top of the throttling valve body. The valve assembly includes a sealing valve body and a connecting rod fixedly installed on the top of the sealing valve body. The connecting flange is fixedly connected to the bottom of the throttling valve body.

[0008] A further improvement of this utility model is that: the bottom of the throttle valve body is provided with an inlet, and the side of the throttle valve body is provided with an outlet.

[0009] A further improvement of this utility model is that: a valve block is fixedly connected inside the throttle valve body, the sealing valve body is movably installed inside the valve block, and an annular sealing ring is provided on the top of the valve block.

[0010] A further improvement of this utility model is that: an annular stop is provided on the top of the valve stop, a valve cage is provided on the top of the annular sealing ring, and a sleeve is provided on the top of the valve cage.

[0011] A further improvement of this utility model is that: an impact stop is fixedly installed on the outside of the connecting rod, a connecting ring is rotatably connected to the other end of the connecting rod, a stop tooth is provided inside the throttle valve body, and a threaded rod is rotatably connected to the other end of the connecting ring.

[0012] A further improvement of this utility model is that the threaded rod is externally threaded with a threaded tube, and a rotating handle is fixedly installed at the other end of the threaded tube.

[0013] A further improvement of this utility model is that: a fixing bolt is threadedly connected to the top of the sealing cover, a sealing screw is threadedly connected to the top of the sealing cover, a shaft sealing cover is threadedly installed on the top of the sealing cover, a sealing block is provided at the bottom of the sealing screw, and a circular sealing ring is provided inside the sealing block.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides a high-temperature and high-pressure sulfur-resistant throttling valve forging. Through the combined action of the sealing cover, sealing screw, sealing block and sleeve, the valve cage is fixed by the sleeve, and the sleeve is fixed by the sealing block and sealing screw. Then, the sealing cover is connected to the throttling valve body by the fixing bolt. This makes the assembly and maintenance of the throttling valve simpler. The throttling valve can be fully opened by simply removing the fixing bolt and sealing screw, which facilitates internal replacement and maintenance and improves maintenance efficiency.

[0016] 2. This utility model provides a high-temperature and high-pressure anti-sulfur throttling valve forging. Through the combined action of the annular block and the stop tooth, the annular block and the stop tooth can protect the annular sealing ring, preventing it from being easily damaged by the high-pressure airflow at the wellhead and the impurities at the bottom of the well when the valve is opened. The annular block and the stop tooth can also buffer the annular sealing ring, avoiding direct impact and increasing its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the high-temperature and high-pressure sulfur-resistant throttling valve forging of this utility model;

[0018] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the valve assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing assembly of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of this utility model.

[0022] In the diagram: 1. Throttling valve body; 4. Connecting flange; 2. Sealing assembly; 20. Sealing cover; 21. Fixing bolt; 22. Sealing screw; 23. Shaft seal cover; 24. Connecting ring; 25. Circular sealing ring; 26. Sealing block; 27. Stop tooth; 3. Valve assembly; 30. Inlet; 31. Outlet; 33. Sealing valve body; 34. Valve stop block; 35. Valve cage; 36. Annular sealing ring; 37. Annular stop block; 38. Impact stop block; 39. Connecting rod; 301. Rotating handle; 302. Threaded pipe; 303. Threaded rod; 304. Sleeve. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] like Figure 1-5 As shown, this utility model provides a high-temperature and high-pressure sulfur-resistant throttling valve forging, including a throttling valve body 1, a sealing assembly 2, a valve assembly 3, and a connecting flange 4. The connecting flange 4 is fixedly connected to the bottom end of the throttling valve body 1 and is used for external connection.

[0025] like Figure 2 As shown, the bottom of the throttle valve body 1 is provided with an inlet 30 and the side of the throttle valve body 1 is provided with an outlet 31. Liquid enters the interior of the throttle valve body 1 from the inlet 30, and flows out from the outlet 31 after passing through the valve assembly 3.

[0026] like Figure 4As shown, the sealing assembly 2 is fixedly installed inside the throttle valve body 1. The sealing assembly 2 includes a sealing cover 20, which is threadedly fixed to the top of the throttle valve body 1. A fixing bolt 21 is threadedly connected to the top of the sealing cover 20. A retaining tooth 27 is provided inside the throttle valve body 1. A sealing screw 22 is threadedly connected to the top of the sealing cover 20. A shaft sealing cover 23 is threadedly installed on the top of the sealing cover 20. A sealing block 26 is provided at the bottom of the sealing screw 22. A circular sealing ring 25 is provided inside the sealing block 26. The circular sealing ring 25 can prevent the liquid inside the valve from leaking out from the sealing block 26. The valve cage 35 is fixed by the sleeve 304, and the sleeve 304 is fixed by the sealing block 26 and the sealing screw 22. The sealing cover 20 is then connected to the throttle valve body 1 by the fixing bolt 21. This makes the assembly and maintenance of the anti-sulfur throttle valve simpler. The throttle valve can be fully opened simply by removing the fixing bolt 21 and the sealing screw 22, which facilitates internal replacement and maintenance and improves maintenance efficiency.

[0027] like Figure 3 and Figure 5 As shown, valve assembly 3 is fixedly installed inside the throttle valve body 1. Valve assembly 3 includes a sealing valve body 33 and a connecting rod 39. The connecting rod 39 is fixedly installed on the top of the sealing valve body 33. An annular stop 37 is provided on the top of the valve stop 34. The valve stop 34 is fixedly connected inside the throttle valve body 1. The sealing valve body 33 is movably installed inside the valve stop 34. An annular sealing ring 36 is provided on the top of the valve stop 34. The annular sealing ring 36 can provide sealing at the connection of the valve internal fittings. Since the annular sealing ring 36 is easily damaged by the high-pressure airflow at the wellhead and the impurities at the bottom of the well it carries, an annular stop 37 and a retaining tooth 27 are provided inside the throttle valve body 1. The annular stop 37 and the retaining tooth 27 can protect the annular sealing ring 36 and buffer it, preventing the annular sealing ring 36 from being directly damaged by the high-pressure airflow and impurities at the bottom of the well. Impact resistance increases service life. A valve cage 35 is provided on the top of the annular sealing ring 36, and a sleeve 304 is provided on the top of the valve cage 35. An impact stop 38 is fixedly installed on the outside of the connecting rod 39. The impact stop 38 can prevent the valve cage 35 from being directly impacted by the liquid, thus increasing the service life of the valve cage 35. One end of the connecting ring 24 is rotatably connected to the connecting rod 39, and the other end of the connecting ring 24 is rotatably connected to the threaded rod 303. The threaded rod 303 is externally threaded to the threaded tube 302, and the other end of the threaded tube 302 is fixedly installed with a rotating handle 301. Rotating the rotating handle 301 causes the threaded tube 302 to rotate. Since the threaded tube 302 and the threaded rod 303 are threadedly engaged, the threaded rod 303 will move upward. Then, the connecting rod 39 pulls up the sealing valve body 33, allowing the liquid to enter the interior of the throttle valve body 1 through the inlet 30, and then flow out from the outlet 31 through the valve cage 35 after pressure reduction.

[0028] The working principle of this high-temperature, high-pressure anti-sulfur throttling valve forging will be explained in detail below.

[0029] like Figure 1-5 As shown, when using this high-temperature and high-pressure anti-sulfur throttling valve forging, first connect the throttling valve to other pipelines via the connecting flange 4. Rotate the handle 301 to rotate the threaded pipe 302. Since the threaded pipe 302 is threadedly engaged with the threaded rod 303, the threaded rod 303 will move upward. Then, pull up the sealing valve body 33 via the connecting rod 39 to allow liquid to enter the interior of the throttling valve body 1 through the inlet 30. Then, the pressure is reduced by the valve cage 35 and the liquid flows out from the outlet 31. The valve cage 35 is fixed by the sleeve 304. Then, the sleeve 304 is fixed by the sealing block 26 and the sealing screw 22. Finally, the sealing cover 20 is fixed to the throttling valve body 1 by the fixing bolt 21. The connection of the flow valve body 1 makes the assembly and maintenance of the anti-sulfur throttle valve simpler. The throttle valve can be fully opened simply by removing the fixing bolt 21 and the sealing screw 22, which facilitates internal replacement and maintenance and improves maintenance efficiency. Since the annular sealing ring 36 is easily damaged by the high-pressure airflow at the wellhead and the impurities it carries at the bottom of the well, an annular stop block 37 and a stop tooth 27 are set inside the throttle valve body 1. The annular stop block 37 and the stop tooth 27 can protect the annular sealing ring 36 and buffer it, avoiding direct impact of the annular sealing ring 36 on the high-pressure airflow and impurities at the bottom of the well, thus increasing its service life.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high-temperature, high-pressure sulfur-resistant throttling valve forging, comprising a throttling valve body (1), a sealing assembly (2), a valve assembly (3), and a connecting flange (4), characterized in that: The sealing assembly (2) is fixedly installed inside the throttle valve body (1), the valve assembly (3) is fixedly installed inside the throttle valve body (1), the sealing assembly (2) includes a sealing cover (20), the sealing cover (20) is threadedly fixed to the top of the throttle valve body (1), the valve assembly (3) includes a sealing valve body (33) and a connecting rod (39), the connecting rod (39) is fixedly installed on the top of the sealing valve body (33), and the connecting flange (4) is fixedly connected to the bottom end of the throttle valve body (1).

2. The high-temperature, high-pressure sulfur-resistant throttling valve forging according to claim 1, characterized in that: The bottom of the throttle valve body (1) is provided with an inlet (30), and the side of the throttle valve body (1) is provided with an outlet (31).

3. The high-temperature, high-pressure sulfur-resistant throttling valve forging according to claim 1, characterized in that: A valve stop (34) is fixedly connected inside the throttle valve body (1), and the sealing valve body (33) is movably installed inside the valve stop (34). An annular sealing ring (36) is provided on the top of the valve stop (34).

4. The high-temperature, high-pressure sulfur-resistant throttling valve forging according to claim 3, characterized in that: The valve stop (34) is provided with an annular stop (37) at its top, the annular sealing ring (36) is provided with a valve cage (35) at its top, and the valve cage (35) is provided with a sleeve (304) at its top.

5. A high-temperature, high-pressure sulfur-resistant throttling valve forging according to claim 1, characterized in that: An impact stop (38) is fixedly installed on the outside of the connecting rod (39), and a connecting ring (24) is rotatably connected to the other end of the connecting rod (39). A stop tooth (27) is provided inside the throttle valve body (1), and a threaded rod (303) is rotatably connected to the other end of the connecting ring (24).

6. A high-temperature, high-pressure sulfur-resistant throttling valve forging according to claim 5, characterized in that: The threaded rod (303) is externally threaded to a threaded tube (302), and a rotating handle (301) is fixedly installed at the other end of the threaded tube (302).

7. The high-temperature, high-pressure sulfur-resistant throttling valve forging according to claim 1, characterized in that: The top of the sealing cover (20) is threaded with a fixing bolt (21), the top of the sealing cover (20) is threaded with a sealing screw (22), the top of the sealing cover (20) is threaded with a shaft sealing cover (23), the bottom of the sealing screw (22) is provided with a sealing block (26), and the inside of the sealing block (26) is provided with a circular sealing ring (25).

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