An angle adjustable Christmas tree pressure gauge connection fitting

Abstract

The utility model relates to oil and gas exploitation technical field, concretely is a kind of adjustable angle's Christmas tree pressure gauge connecting fitting, including double pipe, the middle part rotation of double pipe one end is connected with inner tube, the outside fixed mounting of inner tube one end is equipped with fixed ring, the below of fixed ring both ends are all fixedly installed with connecting rod, the one end of two connecting rods is all fixedly installed with gear ring two, the outside of two connecting rods is all equipped with spring, the both ends of two springs are all fixedly installed with anti -drop gasket.The utility model can be through the simple operation of pulling and unlocking to rotating angle adjustment to hand release reset locking, can realize the 360 degree adjustment of pressure gauge orientation, in the process of installation, user can adjust pressure gauge to the angle of facilitating later reading, simultaneously, due to the meshing cooperation spring reset of two gear rings, the angle stability of adjusted pressure gauge can be ensured not loose, entire process does not need additional tool auxiliary.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas extraction technology, specifically to an adjustable angle wellhead pressure gauge connection accessory. Background Technology

[0002] A Christmas tree is a key wellhead device used to control oil well production in oil and gas extraction. It is named for its tree-like shape and mainly consists of three parts: the casing head, the tubing head, and the Christmas tree body. The Christmas tree body includes components such as the casing gate valve, main gate valve, production gate valve, wax removal gate valve, tubing tees or crosses, nozzles, and pressure gauges. According to the connection type, it can be divided into flange type and clamp type. It is widely used in onshore and offshore oil and gas extraction and can be divided into surface Christmas trees and subsea Christmas trees. It can adapt to different well types such as vertical wells, deviated wells, and horizontal wells, as well as various oil production methods such as natural flow, mechanical oil production, and gas lift oil production.

[0003] Traditional Christmas tree pressure gauges are mostly connected by threaded rigid connections. After installation, the gauge dial faces a fixed direction and cannot be adjusted according to the site space or observation position. If the Christmas tree pipeline is located at a high altitude, in a confined space, or behind the equipment, the dial is likely to face the wall, the ground, or a dangerous area, requiring operators to look up, bend over, or even climb to read the pressure. This is not only inefficient but also poses safety hazards; therefore, it has certain shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable angle connection accessory for a wellhead pressure gauge to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An adjustable-angle tree pressure gauge connection fitting includes a double-ended pipe. An inner tube is rotatably snapped into the middle of one end of the double-ended pipe. A fixing ring is fixedly installed on the outer side of one end of the inner tube. Connecting rods are fixedly installed below both ends of the fixing ring. A toothed ring is fixedly installed at one end of each of the two connecting rods. A spring is sleeved on the outer side of each of the two connecting rods. Anti-detachment gaskets are fixedly installed at both ends of each of the two springs. An outer sheath is fixedly installed on the outer side of one end of the double-ended pipe. An annular groove is formed in the middle of the upper end of the outer sheath. A toothed ring is fixedly installed in the middle of the lower end of the outer sheath.

[0006] In some embodiments, a connecting flange is fixedly installed on the outer side of the other end of the dual-pipe, and a flow guiding slope is formed on the inner wall of the lower end of the inner pipe.

[0007] In some embodiments, the other end of the dual-pipe is connected to a pressure gauge body, the pressure gauge body is threadedly connected to the middle of a threaded hole in the inner tube, and a sealing ring is fixedly installed on the outer side of the connection between the pressure gauge body and the fixing ring.

[0008] In some embodiments, a leak-proof ring is fixedly installed at the middle of the other end of the double-ended pipe, and the leak-proof ring is in contact with the outer wall of the inner pipe.

[0009] In some embodiments, the connecting rod is slidably engaged in the middle of the annular groove, the diameter of the anti-detachment washer is larger than the opening of the annular groove, and the anti-detachment washer abuts against the annular groove. In some embodiments, the second gear ring is larger than the opening of the annular groove, the second gear ring is slidably engaged with the middle of the outer sheath tube, and the second gear ring meshes with the first gear ring.

[0010] This utility model has at least the following beneficial effects: 1. This utility model allows for convenient angle adjustment and reliable locking during use. After installation, the pressure gauge can be adjusted 360 degrees by simply pulling to unlock, rotating to adjust the angle, and then releasing to reset and lock. During installation, the user can adjust the pressure gauge to an angle that is convenient for later reading. At the same time, due to the engagement of two gear rings and the spring reset, the angle of the pressure gauge is ensured to be stable and not loose after adjustment. The whole process does not require any additional tools.

[0011] 2. When in use, this utility model can effectively block the leakage of pressure medium through the rigid threaded connection and the anti-leakage ring design; the connecting flange achieves a stable connection with the pipeline, and the symmetrical arrangement of the double connecting rods with the anti-detachment structure can not only prevent the components from loosening, but also resist the impact of pipeline vibration, making it suitable for high-pressure working conditions. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is a schematic diagram showing the disassembled structure of the dual-way pipe and pressure gauge of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the outer sheath of this utility model; Figure 4 This is a cross-sectional structural diagram showing the connection relationship between the double-through pipe and the outer sheath pipe of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the inner tube of this utility model.

[0013] In the diagram: 1. Double-ended pipe; 11. Connecting flange; 12. Pressure gauge body; 13. Sealing ring; 14. Leak-proof ring; 2. Outer sheath; 21. Annular groove; 22. Gear ring one; 23. Inner tube; 24. Fixing ring; 25. Gear ring two; 26. Connecting rod; 27. Spring; 28. Anti-detachment gasket; 29. ​​Threaded hole; 30. Guide slope. Detailed Implementation

[0014] 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.

[0015] Example 1: Please refer to Figure 1 - Figure 5 This utility model provides a technical solution: an adjustable angle oil well pressure gauge connection accessory, including a double-ended pipe 1, an inner pipe 23 rotatably snapped into the middle of one end of the double-ended pipe 1, a fixing ring 24 fixedly installed on the outer side of one end of the inner pipe 23, connecting rods 26 fixedly installed below both ends of the fixing ring 24, a toothed ring 25 fixedly installed at one end of each connecting rod 26, a spring 27 sleeved on the outer side of each connecting rod 26, and anti-detachment gaskets 28 fixedly installed at both ends of each spring 27. An outer sheath tube 2 is fixedly installed on the outer side of one end. An annular groove 21 is opened in the middle of the upper end of the outer sheath tube 2. A toothed ring 22 is fixedly installed in the middle of the lower end of the outer sheath tube 2. A connecting rod 26 is slidably engaged in the middle of the annular groove 21. The diameter of the anti-detachment pad 28 is larger than the opening of the annular groove 21. The anti-detachment pad 28 abuts against the annular groove. The size of the toothed ring 25 is larger than the opening of the annular groove 21. The toothed ring 25 is slidably engaged in the middle of the outer sheath tube 2. Therefore, the toothed ring 25 and the toothed ring 22 mesh.

[0016] In this embodiment, when the angle of the pressure gauge body 12 needs to be adjusted, the user can pull the pressure gauge body 12 or the fixing ring 24 in the opposite direction to the gear ring 22. At this time, the inner tube 23 will move at the end of the double-pass tube 1, providing room for the fixing ring 24 to move. The connecting rod 26 connected to the fixing ring 24 will move in the annular groove 21, and the gear ring 25 will also move away from the gear ring 22, disengaging from it. This removes the fixation on the angle of the fixing ring 24 and the internally connected pressure gauge body 12, allowing the user to rotate the pressure gauge body 12. When the desired angle is reached, the connecting rod 26, spring 27, and anti-detachment washer 28 will also rotate. During the entire process, since the diameter of the anti-detachment washer 28 at the end of spring 27 is larger than the opening of the annular groove 21, spring 27 will be compressed as the connecting rod 26 moves, storing elastic potential energy. When the angle adjustment is completed, the limiting or pulling on the pressure gauge body 12 is released. Under the reset action of spring 27 and the action of gravity, the fixing ring 24, inner tube 23, and pressure gauge body 12 will fall back to their original positions, and the gear ring 25 will re-engage with the gear ring 22, thereby locking the angle of the pressure gauge body 12.

[0017] Example 2: Figure 1 - Figure 5 As shown, a connecting flange 11 is fixedly installed on the outer side of the other end of the double-pipe 1. A flow guiding slope 30 is opened on the inner wall of the lower end of the inner pipe 23. The other end of the double-pipe 1 is connected to and fixedly connected to a pressure gauge body 12. The pressure gauge body 12 is threadedly connected to the middle of the threaded hole 29 opened in the inner pipe 23. A sealing ring 13 is fixedly installed on the outer side of the connection between the pressure gauge body 12 and the fixing ring 24. A leak-proof ring 14 is fixedly installed in the middle of the other end of the double-pipe 1. The leak-proof ring 14 is in contact with the outer wall of the inner pipe 23.

[0018] In this embodiment, the connecting flange 11 at the other end of the double-pipe 1 can connect the entire double-pipe 1 to the oil well pipeline to be tested. The inclined surface of the guide slope 30 can guide the fluid movement. The pressure gauge body 12 can be used to measure the pressure of the connected pipeline and transmit the reading to the operator through the reading pointer. The pressure gauge body 12 is connected to the inner tube 23 through a rigid connection with a threaded connection, which can effectively ensure the stability of the installation of the pressure gauge body 12. At the same time, a leak-proof ring 14 is added at the connection between the pressure gauge body 12 and the inner tube 23, which can further improve the sealing performance of the connection between the pressure gauge body 12 and the inner tube 23.

[0019] Working principle: like Figure 1 - Figure 5 As shown, during use, the entire device is rigidly connected to the pipeline under test at the tree trunk via the connecting flange 11 at the other end of the double-pipe 1, establishing a stable installation foundation. Fluid within the pipeline flows through the internal channel of the double-pipe 1, is guided smoothly into the inner pipe 23 via the guide slope 30, and then contacts the sensing component of the pressure gauge body 12 via the connecting channel between the inner pipe 23 and the pressure gauge body 12. The pressure gauge body 12 is rigidly connected to the inner pipe 23 via a threaded connection. The anti-leakage ring 14 installed at the connection effectively prevents leakage of the pressure medium from the connection point, while the threaded rigid connection ensures the structural stability of the pressure gauge body 12 after installation. After installation, under the natural elasticity of the spring 27 and the force of gravity, the fixing ring 24 drives the gear ring 25 to engage with the gear ring 22 at the lower end of the outer sheath tube 2. At this time, the angle of the pressure gauge body 12 is locked, preventing it from rotating freely.

[0020] When the angle of the pressure gauge body 12 needs to be adjusted to suit the observation requirements, the user can pull the pressure gauge body 12 or the fixing ring 24 away from the gear ring 22. The pulling force is transmitted to the inner tube 23 through the pressure gauge body 12, causing the inner tube 23 to move axially at the end of the double-pass tube 1, providing room for the movement of the fixing ring 24. The fixing ring 24 moves axially synchronously with the inner tube 23, causing the two connecting rods 26 connected to it to slide axially along the annular groove 21 at the upper end of the outer sheath tube 2. At the same time, the gear ring 25 at the end of the connecting rod 26 moves with the fixing ring 24, gradually moving away from and disengaging from the gear ring 22, and the angle locking state originally achieved by the gear ring engagement is released. During the axial movement of the connecting rod 26, because the diameter of the anti-detachment pads 28 at both ends of the spring 27 fitted on the outside of the connecting rod 26 is larger than the opening of the annular groove 21, the anti-detachment pads 28 are limited by the edge of the annular groove 21 and cannot move synchronously with the connecting rod 26, which in turn causes the spring 27 to be compressed, converting the external force into elastic potential energy for storage. After the gear ring 25 is completely disengaged from the gear ring 22, the angle restriction of the pressure gauge body 12 is released, and the user can rotate the pressure gauge body 12 to the target angle according to the observation needs. During the rotation, the inner tube 23, the fixing ring 24, the connecting rod 26, the spring 27 and the anti-detachment pad 28 will rotate synchronously with the pressure gauge body 12, and the annular groove 21 provides trajectory guidance for the rotation of the connecting rod 26.

[0021] Once the angle is adjusted to the appropriate position, the user can release the pull or limit on the pressure gauge body 12, relieving the axial tension applied to the structure. The spring 27, storing elastic potential energy, begins to release energy, generating a reverse thrust that pushes the anti-detachment pad 28 and connecting rod 26 towards the gear ring 22 for axial reset. Simultaneously, with the assistance of gravity, the fixing ring 24, inner tube 23, and pressure gauge body 12 synchronously return to their initial axial positions. During the return of the fixing ring 24, the gear ring 25 re-engages precisely with the gear ring 22, achieving circumferential positioning through the meshing of the teeth between the gear rings. The pressure gauge body 12 is stably locked at the adjusted angle and cannot rotate on its own. Throughout the process, the leak-proof ring 14 remains abutting against the inner tube 23, effectively preventing leakage. The dial can be adjusted to a convenient reading angle during installation, facilitating later maintenance and reading, and demonstrating high practicality.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An adjustable-angle wellhead pressure gauge connection fitting, comprising a double-ended pipe (1), wherein an inner pipe (23) is rotatably snapped into the middle of one end of the double-ended pipe (1), characterized in that: A fixing ring (24) is fixedly installed on the outer side of one end of the inner tube (23). A connecting rod (26) is fixedly installed below both ends of the fixing ring (24). A toothed ring (25) is fixedly installed at one end of each of the two connecting rods (26). A spring (27) is sleeved on the outer side of each of the two connecting rods (26). Anti-detachment pads (28) are fixedly installed at both ends of each of the two springs (27). An outer sheath (2) is fixedly installed on the outer side of one end of the double tube (1). An annular groove (21) is opened in the middle of the upper end of the outer sheath (2). A toothed ring (22) is fixedly installed in the middle of the lower end of the outer sheath (2).

2. The adjustable-angle wellhead pressure gauge connection fitting according to claim 1, characterized in that: A connecting flange (11) is fixedly installed on the outer side of the other end of the double-pass pipe (1), and a guide slope (30) is opened on the inner wall of the lower end of the inner pipe (23).

3. The adjustable-angle wellhead pressure gauge connection fitting according to claim 2, characterized in that: The other end of the double-pass pipe (1) is connected to a pressure gauge body (12), which is threaded to the middle of the threaded hole (29) opened in the inner tube (23). A sealing ring (13) is fixedly installed on the outside of the connection between the pressure gauge body (12) and the fixing ring (24).

4. The adjustable-angle wellhead pressure gauge connection fitting according to claim 2, characterized in that: A leak-proof ring (14) is fixedly installed in the middle of the other end of the double-through pipe (1), and the leak-proof ring (14) is in contact with the outer wall of the inner pipe (23).

5. The adjustable-angle wellhead pressure gauge connection fitting according to claim 1, characterized in that: The connecting rod (26) is slidably engaged in the middle of the annular groove (21), the diameter of the anti-detachment pad (28) is larger than the opening of the annular groove (21), and the anti-detachment pad (28) and the annular groove (21) abut against each other.

6. The adjustable-angle wellhead pressure gauge connection fitting according to claim 1, characterized in that: The size of the second toothed ring (25) is larger than the opening of the annular groove (21). The second toothed ring (25) is slidably engaged in the middle of the outer sheath tube (2), and the second toothed ring (25) and the first toothed ring (22) mesh.

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