A leak-proof assembly for a wellhead choke valve

Abstract

The utility model discloses a kind of leak-proof assemblies of wellhead throttling valve, belong to wellhead throttling valve technical field, including throttling valve body and conveying pipeline, the side of throttling valve body is provided with drain pipe, the end of drain pipe is fixedly sleeved with first connecting disc, the end of conveying pipeline is fixedly sleeved with second connecting disc.In the utility model, by inserting and mounting sleeve joint pipe and outer sealing sleeve in the inserting and mounting groove of conveying pipeline and drain pipe end, the sealing between sleeve joint pipe and inserting and mounting groove is guaranteed using outer sealing sleeve, so as to guarantee the connection sealing between conveying pipeline and drain pipe, in addition, make the second connecting disc of conveying pipeline end and the first connecting disc of drain pipe end be pasted, upper arc clamping sleeve and lower arc clamping sleeve are sleeved on the outside of first connecting disc and second connecting disc, so that the sealed connection between conveying pipeline and drain pipe is formed, avoid the leakage between conveying pipeline and drain pipe.

Description

Technical Field

[0001] This utility model relates to the field of wellhead throttle valve technology, and more specifically, to a leak-proof component for a wellhead throttle valve. Background Technology

[0002] A throttle valve is a valve that controls fluid flow by changing the throttling cross-section or throttling length. Connecting a throttle valve and a check valve in parallel creates a check throttle valve. Throttling valves and check throttle valves are simple flow control valves. In a fixed-displacement pump hydraulic system, a throttle valve and a relief valve can work together to form three types of throttling speed control systems: inlet throttle speed control system, return throttle speed control system, and bypass throttle speed control system. Throttling valves lack flow negative feedback and cannot compensate for speed instability caused by load changes. They are generally only used in applications where load changes are small or speed stability requirements are not high. The discharge end of the throttle valve needs to be connected to the delivery pipeline; however, the seal between the pipeline and the throttle valve is often poor, leading to leakage. Therefore, we propose a leak-proof component for wellhead throttle valves. Utility Model Content

[0003] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a leak-proof component for a wellhead throttle valve.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A leak-proof assembly for a wellhead throttle valve includes a throttle valve body and a delivery pipe. A drain pipe is provided on the side of the throttle valve body. A first connecting disc is fixedly sleeved at the end of the drain pipe, and a second connecting disc is fixedly sleeved at the end of the delivery pipe. The ends of the first and second connecting discs are fitted together. An insertion groove is provided at one end of the inner cavity of both the delivery pipe and the drain pipe. A through hole is provided on the top surface of both the delivery pipe and the drain pipe. A sleeve is fitted inside the inner cavity of the two insertion grooves. An outer sealing sleeve is fixedly sleeved on the outer side of the sleeve. The sleeve and... The top of both ends of the outer sealing sleeve is provided with insertion holes. An upper protective shell is fitted above the ends of the conveying pipe and the drain pipe, and a lower protective shell is fitted below the ends of the conveying pipe and the drain pipe. Two fixing pins are fixedly connected to the inner cavity of the upper protective shell. The bottom end of the fixing pin is movably sleeved into the inner cavity of the insertion hole through a through hole. A connecting mechanism is provided in the inner cavities of the upper and lower protective shells. A detection mechanism is provided in the inner cavity of the lower protective shell. Two mounting sleeves are fixedly fitted to the bottom of the lower protective shell, and a wing screw is fitted in each of the two mounting sleeves.

[0006] As a preferred embodiment of this utility model, the connecting mechanism includes an upper arc-shaped sleeve fixedly connected to the inner cavity of the upper protective shell and a lower arc-shaped sleeve fixedly connected to the inner cavity of the lower protective shell. The lower arc-shaped sleeve is sleeved on the outer side of the bottom end of the second connecting plate and the first connecting plate, and the upper arc-shaped sleeve is sleeved on the outer side of the top end of the second connecting plate and the first connecting plate. Both ends of the upper arc-shaped sleeve and the lower arc-shaped sleeve are provided with screw holes. The wing screw is threaded into the inner cavity of the screw hole. The bottom of the lower arc-shaped sleeve is provided with a detection hole. The inner walls of the upper arc-shaped sleeve and the lower arc-shaped sleeve are respectively in contact with the outer surfaces of the second connecting plate and the first connecting plate.

[0007] As a preferred embodiment of this utility model, the detection mechanism includes a controller, a battery, a humidity sensor, and a speaker fixedly installed in the inner cavity of the lower protective shell. The detection end of the humidity sensor extends into the inner cavity of the detection hole. The controller is electrically connected to the humidity sensor and the speaker, respectively. The battery is electrically connected to the humidity sensor, the controller, and the speaker, respectively.

[0008] As a preferred embodiment of this utility model, the top surface of the lower protective shell is provided with a sealing slot, the bottom surface of the upper protective shell is provided with a sealing block, the bottom end of the sealing block is movably sleeved into the inner cavity of the sealing slot, and the inner wall of the sealing slot and the outer surface of the sealing block are in contact.

[0009] As a preferred embodiment of this utility model, arc-shaped grooves are respectively provided on both sides of the upper protective shell and the lower protective shell, and the conveying pipe and the drain pipe are sleeved in the inner cavity of the arc-shaped grooves. The inner diameter of the arc-shaped grooves is equal to the outer diameter of the conveying pipe and the drain pipe, respectively.

[0010] As a preferred embodiment of this utility model, both ends of the outer sealing sleeve are provided with annular triangular seats, the outer surfaces of the two annular triangular seats are respectively in contact with the inner walls of the conveying pipe and the drain pipe, and the outer surface of the outer sealing sleeve is in contact with the inner wall of the insertion groove.

[0011] In a preferred embodiment of this utility model, the outer diameter of the fixing pin is equal to the inner diameter of the through hole and the insertion hole, respectively.

[0012] The advantages of this utility model are:

[0013] (1) In this utility model, by inserting the upper sleeve and the outer sealing sleeve into the insertion groove at the end of the conveying pipe and the drain pipe, the outer sealing sleeve ensures the sealing between the sleeve and the insertion groove, thereby ensuring the sealing of the connection between the conveying pipe and the drain pipe, and making the second connecting plate at the end of the conveying pipe and the first connecting plate at the end of the drain pipe fit together. The upper arc-shaped sleeve and the lower arc-shaped sleeve are fitted on the outside of the first connecting plate and the second connecting plate, thereby sealing the connection between the conveying pipe and the drain pipe and preventing leakage between the conveying pipe and the drain pipe.

[0014] (2) In this utility model, when the throttle valve body is running, the humidity sensor is used to detect the humidity and moisture in the inner cavity of the detection hole in real time. When a leak occurs between the delivery pipe and the drain pipe, the fluid flows to the bottom of the inner cavity of the lower arc sleeve under its own weight. At this time, the humidity sensor detects the humidity and moisture, and the controller controls the speaker to emit a warning sound so that the staff can carry out maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram showing the connection of the conveying pipe and the drain pipe of this utility model;

[0018] Figure 4 This is a schematic diagram showing the disassembled conveying pipe, drain pipe, and sleeve pipe of this utility model;

[0019] Figure 5 This is a schematic diagram showing the disassembled upper and lower protective shells of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the lower protective shell of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the protective shell of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Throttling valve body; 2. Delivery pipe; 3. First connecting plate; 4. Second connecting plate; 5. Insert groove; 6. Socket pipe; 7. Outer sealing sleeve; 8. Perforation; 9. Insertion hole; 10. Upper protective shell; 11. Lower protective shell; 12. Fixing pin; 13. Connecting mechanism; 14. Detection mechanism; 15. Mounting sleeve; 16. Wing screw; 17. Upper arc-shaped ferrule; 18. Lower arc-shaped ferrule; 19. Screw hole; 20. Humidity sensor; 21. Controller; 22. Battery; 23. Speaker; 24. Detection hole; 25. Arc-shaped groove; 26. Annular triangular seat; 27. Sealing block; 28. Sealing slot; 29. ​​Drain pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] Please see Figure 1-7A leak-proof component for a wellhead throttle valve includes a throttle valve body 1 and a delivery pipe 2. A drain pipe 29 is provided on the side of the throttle valve body 1. A first connecting disc 3 is fixedly sleeved at the end of the drain pipe 29. A second connecting disc 4 is fixedly sleeved at the end of the delivery pipe 2. The ends of the first connecting disc 3 and the second connecting disc 4 are fitted together. An insertion groove 5 is provided at one end of the inner cavity of both the delivery pipe 2 and the drain pipe 29. A perforation 8 is opened on the top surface of both the delivery pipe 2 and the drain pipe 29. A sleeve pipe 6 is fitted inside the inner cavity of the two insertion grooves 5. An outer sealing sleeve 7 is fixedly sleeved on the outer side of the sleeve pipe 6. The two ends of the sleeve pipe 6 and the outer sealing sleeve 7 are connected... The top of each is provided with an insertion hole 9. An upper protective shell 10 is fitted above the ends of the conveying pipe 2 and the drain pipe 29, and a lower protective shell 11 is fitted below the ends of the conveying pipe 2 and the drain pipe 29. Two fixing pins 12 are fixedly connected to the inner cavity of the upper protective shell 10. The bottom end of the fixing pin 12 passes through the through hole 8 and is movably fitted into the inner cavity of the insertion hole 9. A connecting mechanism 13 is provided in the inner cavity of the upper protective shell 10 and the lower protective shell 11. A detection mechanism 14 is provided in the inner cavity of the lower protective shell 11. Two mounting sleeves 15 are fixedly fitted to the bottom of the lower protective shell 11. A wing screw 16 is fitted in each of the two mounting sleeves 15.

[0029] For details, please refer to Figures 2 to 7 The connecting mechanism 13 includes an upper arc-shaped sleeve 17 fixedly connected to the inner cavity of the upper protective shell 10 and a lower arc-shaped sleeve 18 fixedly connected to the inner cavity of the lower protective shell 11. The lower arc-shaped sleeve 18 is fitted on the outer side of the bottom end of the second connecting plate 4 and the first connecting plate 3, and the upper arc-shaped sleeve 17 is fitted on the outer side of the top end of the second connecting plate 4 and the first connecting plate 3. Both ends of the upper arc-shaped sleeve 17 and the lower arc-shaped sleeve 18 are provided with screw holes 19. A wing screw 16 is threaded into the inner cavity of the screw hole 19. The bottom of the lower arc-shaped sleeve 18 is provided with a detection hole 24. The inner walls of the upper arc-shaped sleeve 17 and the lower arc-shaped sleeve 18 are respectively in contact with the outer side of the second connecting plate 4 and the first connecting plate 3.

[0030] For details, please refer to Figure 2 , Figure 5 and Figure 6 The detection mechanism 14 includes a controller 21, a battery 22, a humidity sensor 20, and a speaker 23, which are fixedly installed in the inner cavity of the lower protective shell 11. The detection end of the humidity sensor 20 extends into the inner cavity of the detection hole 24. The controller 21 is electrically connected to the humidity sensor 20 and the speaker 23, respectively. The battery 22 is electrically connected to the humidity sensor 20, the controller 21, and the speaker 23, respectively.

[0031] In this embodiment, the controller 21 processes the information detected by the humidity sensor 20, the speaker 23 emits an alarm sound, and the battery 22 supplies power to the humidity sensor 20, the controller 21, and the speaker 23.

[0032] For details, please refer to Figures 5 to 7 The top surface of the lower protective shell 11 is provided with a sealing slot 28, and the bottom surface of the upper protective shell 10 is provided with a sealing block 27. The bottom end of the sealing block 27 is movably sleeved into the inner cavity of the sealing slot 28, and the inner wall of the sealing slot 28 and the outer surface of the sealing block 27 are in contact.

[0033] In this embodiment, the sealing performance between the upper protective shell 10 and the lower protective shell 11 is ensured by the cooperation of the sealing plug 27 and the sealing slot 28.

[0034] For details, please refer to Figures 2 to 6 Arc-shaped grooves 25 are provided on both sides of the upper protective shell 10 and the lower protective shell 11 respectively. The conveying pipe 2 and the drain pipe 29 are fitted into the inner cavity of the arc-shaped grooves 25. The inner diameter of the arc-shaped grooves 25 is equal to the outer diameter of the conveying pipe 2 and the drain pipe 29 respectively.

[0035] In this embodiment, the arc-shaped groove 25 is used to avoid the conveying pipe 2 and the drain pipe 29, so that the lower protective shell 11 and the upper protective shell 10 can be smoothly fitted onto the conveying pipe 2 and the drain pipe 29.

[0036] For details, please refer to Figure 2 and Figure 4 Both ends of the outer sealing sleeve 7 are provided with annular triangular seats 26. The outer surfaces of the ends of the two annular triangular seats 26 are respectively attached to the inner walls of the conveying pipe 2 and the drain pipe 29. The outer surface of the outer sealing sleeve 7 is attached to the inner wall of the insertion groove 5.

[0037] In this embodiment, the outer sealing sleeve 7 is used to ensure the sealing of the sleeve tube 6 inserted into the inner cavity of the two insertion slots 5, and the fluid is guided by the annular triangular seat 26 to prevent the fluid from entering the end joint of the insertion slot 5 and the sleeve tube 6.

[0038] For details, please refer to Figures 2 to 4 The outer diameter of the fixing pin 12 is equal to the inner diameter of the through hole 8 and the insertion hole 9, respectively.

[0039] In this embodiment, the stability of the fixing pin 12 inserted into the cavity of the through hole 8 and the insertion hole 9 is ensured, thereby ensuring the stability of the fixing pin 12 in fixing the sleeve 6 and the outer sealing sleeve 7 in the cavity of the two insertion slots 5.

[0040] Working principle: When connecting the throttle valve body 1 and the delivery pipe 2, firstly, insert the sleeve 6 into the insertion groove 5 at the end of the delivery pipe 2 and the drain pipe 29, and then put the outer sealing sleeve 7 on the outside of the sleeve 6 to seal the insertion groove 5 and the sleeve 6. At the same time, make the insertion hole 9 and the through hole 8 concentrically arranged. Then, put the lower protective shell 11 under the end of the delivery pipe 2 and the drain pipe 29, and put the upper protective shell 10 above the end of the delivery pipe 2 and the drain pipe 29. At this time, the fixing pin 12 in the inner cavity of the upper protective shell 10 is inserted into the inner cavity of the through hole 8 and the insertion hole 9, thereby fixing the sleeve 6 inserted between the delivery pipe 2 and the drain pipe 29. At the same time, make the sealing block 27 at the bottom of the upper protective shell 10 insert into the sealing slot 28 at the top of the lower protective shell 11 to ensure the connection sealing between the upper protective shell 10 and the lower protective shell 11. In addition, the upper arc-shaped sleeve 17 and the lower The arc-shaped retaining sleeve 18 is fitted onto the outside of the second connecting plate 4 and the first connecting plate 3. The upper arc-shaped retaining sleeve 17 and the lower arc-shaped retaining sleeve 18 are used to fix the second connecting plate 4 at the end of the conveying pipe 2 and the first connecting plate 3 at the end of the drain pipe 29. Then, the wing screw 16 is inserted from the mounting sleeve 15, so that the top of the wing screw 16 is threaded into the screw hole 19 on the upper arc-shaped retaining sleeve 17 and the lower arc-shaped retaining sleeve 18, thereby fixing the upper arc-shaped retaining sleeve 17 and the lower arc-shaped retaining sleeve 18, and thus fixing the first connecting plate 3 and the second connecting plate 4. Finally, the humidity sensor 20 is used to detect the humidity of the inner cavity of the first connecting plate 3 and the second connecting plate 4. When the humidity sensor 20 detects moisture, it indicates that there is a leak at the connection between the conveying pipe 2 and the drain pipe 29. The controller 21 controls the speaker 23 to emit a warning sound.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A leak-proof assembly for a wellhead throttle valve, comprising a throttle valve body (1) and a delivery pipe (2), characterized in that: The throttle valve body (1) has a drain pipe (29) on its side. A first connecting plate (3) is fixedly sleeved at the end of the drain pipe (29). A second connecting plate (4) is fixedly sleeved at the end of the conveying pipe (2). The ends of the first connecting plate (3) and the second connecting plate (4) are in contact with each other. An insertion groove (5) is provided at one end of the inner cavity of the conveying pipe (2) and the drain pipe (29). A through hole (8) is opened on the top surface of the conveying pipe (2) and the drain pipe (29). A sleeve pipe (6) is sleeved in the inner cavity of the two insertion grooves (5). An outer sealing sleeve (7) is fixedly sleeved on the outside of the sleeve pipe (6). Insertion holes (9) are provided at the top of both ends of the sleeve pipe (6) and the outer sealing sleeve (7). An upper protective shell (10) is fitted above the ends of the conveying pipe (2) and the drain pipe (29), and a lower protective shell (11) is fitted below the ends of the conveying pipe (2) and the drain pipe (29). The inner cavity of the upper protective shell (10) is fixedly connected to two fixing pins (12). The bottom end of the fixing pin (12) passes through the through hole (8) and is movably fitted into the inner cavity of the insertion hole (9). The inner cavities of the upper protective shell (10) and the lower protective shell (11) are provided with a connecting mechanism (13). The inner cavity of the lower protective shell (11) is provided with a detection mechanism (14). The bottom of the lower protective shell (11) is fixedly fitted with two mounting sleeves (15), and each of the two mounting sleeves (15) is fitted with a wing screw (16).

2. The anti-leakage component of a wellhead throttle valve according to claim 1, characterized in that: The connecting mechanism (13) includes an upper arc-shaped sleeve (17) fixedly connected to the inner cavity of the upper protective shell (10) and a lower arc-shaped sleeve (18) fixedly connected to the inner cavity of the lower protective shell (11). The lower arc-shaped sleeve (18) is sleeved on the outer side of the bottom end of the second connecting plate (4) and the first connecting plate (3). The upper arc-shaped sleeve (17) is sleeved on the outer side of the top end of the second connecting plate (4) and the first connecting plate (3). Both ends of the upper arc-shaped sleeve (17) and the lower arc-shaped sleeve (18) are provided with screw holes (19). The wing screw (16) is threaded into the inner cavity of the screw hole (19). The bottom of the lower arc-shaped sleeve (18) is provided with a detection hole (24). The inner walls of the upper arc-shaped sleeve (17) and the lower arc-shaped sleeve (18) are respectively in contact with the outer side of the second connecting plate (4) and the first connecting plate (3).

3. The anti-leakage component of a wellhead throttle valve according to claim 2, characterized in that: The detection mechanism (14) includes a controller (21), a battery (22), a humidity sensor (20) fixedly installed in the inner cavity of the lower protective shell (11), and a speaker (23) fixedly installed at the bottom of the lower protective shell (11). The detection end of the humidity sensor (20) extends into the inner cavity of the detection hole (24). The controller (21) is electrically connected to the humidity sensor (20) and the speaker (23) respectively. The battery (22) is electrically connected to the humidity sensor (20), the controller (21), and the speaker (23) respectively.

4. The anti-leakage component of a wellhead throttle valve according to claim 1, characterized in that: The top surface of the lower protective shell (11) is provided with a sealing slot (28), and the bottom surface of the upper protective shell (10) is provided with a sealing block (27). The bottom end of the sealing block (27) is movably sleeved into the inner cavity of the sealing slot (28), and the inner wall of the sealing slot (28) and the outer surface of the sealing block (27) are in contact.

5. The anti-leakage component of a wellhead throttle valve according to claim 1, characterized in that: The upper protective shell (10) and the lower protective shell (11) are respectively provided with arc-shaped grooves (25) on both sides. The conveying pipe (2) and the drain pipe (29) are fitted into the inner cavity of the arc-shaped groove (25). The inner diameter of the arc-shaped groove (25) is equal to the outer diameter of the conveying pipe (2) and the drain pipe (29).

6. The anti-leakage component of a wellhead throttle valve according to claim 1, characterized in that: Both ends of the outer sealing sleeve (7) are provided with annular triangular seats (26). The outer surfaces of the two annular triangular seats (26) are respectively attached to the inner walls of the conveying pipe (2) and the drain pipe (29). The outer surface of the outer sealing sleeve (7) is attached to the inner wall of the insertion groove (5).

7. The anti-leakage component of a wellhead throttle valve according to claim 1, characterized in that: The outer diameter of the fixing pin (12) is equal to the inner diameter of the through hole (8) and the insertion hole (9).

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