Fixed valve rod device for maintaining christmas tree under pressure

Abstract

The utility model belongs to the technical field of gas production tree maintenance, and particularly relates to a fixed valve rod device for maintaining a gas production tree under pressure, which comprises a support frame, the support frame comprises a top plate, two sides of the top plate are respectively and fixedly connected with a barrel body, the lower end of each barrel body is provided with a pipeline clamp, and the pipeline clamps are used for clamping pipelines of the gas production tree. A valve rod fixing assembly is installed on the surface of the barrel and comprises a first clamping plate and a second clamping plate, semi-arc-shaped grooves are formed in the surfaces of the first clamping plate and the second clamping plate respectively, and the first clamping plate and the second clamping plate are rotationally connected through a shaft. According to the utility model, the valve rod is firstly jacked by rotating the jacking piece to remove the filler, and then the clamping plate I and the clamping plate II are matched to clamp the valve rod to add the filler, so that the valve rod can be stably clamped and fixed in the whole maintenance process, and the problem of accidents caused by pressure leakage of a gas well is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas production tree maintenance, and specifically relates to a fixed valve rod device for pressure maintenance of a gas production tree. BACKGROUND

[0002] At the wellhead of an oil and gas well, a gas production tree is generally provided, and the gas production tree is provided with many valves for controlling the delivery of gas. After long-term use, the packing (sealing ring) on the valve rod is prone to damage, resulting in gas leakage. The packing needs to be replaced in a timely manner. If the total valve of the gas well is closed to maintain the gas production tree in a pressureless state, although the safety factor is high, the gas well will be shut down, thereby affecting the production schedule.

[0003] Therefore, the current method is to maintain the valve rod under pressure, that is, to replace the valve rod packing under normal conditions of the gas well. In this case, the valve rod needs to be kept in a fixed state throughout the process to avoid the valve rod being accidentally touched and causing gas well pressure leakage and accidents. However, it is difficult to keep the valve rod in a fixed state throughout the process because the operations of removing the damaged packing and installing new packing need to be completed on the valve rod

[0004] The existing Chinese patent with publication number CN218934381U discloses a fixed valve rod device for pressure maintenance of a gas production tree. The device includes a support frame fixed to the side of the valve rod of the gas production tree, a jacking piece on the support frame aligned with the valve rod in the axial direction of the valve rod, the jacking piece having a jacking position for jacking the valve rod and a retreat position away from the valve rod, and a hand-changing beam located on the radial side of the valve rod for clamping the valve rod in the radial direction of the valve rod when the jacking piece is in the retreat position. In the above arrangement, the jacking piece and the hand-changing beam clamp and limit the valve rod during the two operations of removing and installing the packing, so that the valve rod can be stably clamped and fixed throughout the maintenance process, fully ensuring that the valve rod is in a fixed state and preventing gas well pressure leakage and accidents, thereby enabling the maintenance work to proceed smoothly.

[0005] In view of the above and existing related technologies, the inventors believe that the following defects often exist: the device requires multiple sets of bolts and nuts for installing the clamping plate and the clamping block, which is time-consuming and laborious to install, and needs to be improved. Therefore, a fixed valve rod device for pressure maintenance of a gas production tree is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] In order to make up for the shortcomings of the prior art and solve the technical problems mentioned above, the utility model provides a fixed valve rod device for pressure maintenance of a gas production tree.

[0007] The utility model discloses a technical scheme that solves its technical problem is adopted: the utility model discloses a kind of with pressure maintenance gas production tree fixed valve rod device, including support frame, the support frame includes top plate, the both sides of top plate are respectively fixedly connected with cylinder, the lower end of cylinder is installed with pipeline clamp, the pipeline clamp is used to hold the pipeline of gas production tree, the surface of cylinder is installed with valve rod fixing assembly, the valve rod fixing assembly includes clamping plate one and clamping plate two, the surface of clamping plate one and clamping plate two is respectively provided with semicircular groove, clamping plate one and clamping plate two are rotatably connected by shaft, the surface of clamping plate one is provided with clamping groove, one end side wall of clamping plate two is provided with sliding slot, the inside of sliding slot is slidably connected with clamping plate.

[0008] Preferably, the clamping plate is provided with a L-shaped, the bottom end of the clamping plate is fixedly connected with a tension spring, and the bottom end of the tension spring is fixedly connected with the bottom wall of the sliding slot.

[0009] Preferably, the upper surface of the clamping plate one is fixedly provided with a plurality of supporting protrusions.

[0010] Preferably, the valve rod fixing assembly includes a tightening member, and the tightening member is threadedly installed at the center of the top plate.

[0011] Preferably, the pipeline clamp includes a U-shaped fixing seat and two connecting rods, the upper surface of the fixing seat is fixedly connected with the bottom end of the cylinder, and the cylinder penetrates through the top plate.

[0012] Preferably, the connecting rod is inserted into the inside of the cylinder, the bottom end of the connecting rod is fixedly connected with a fixing plate, and the fixing plate is located in the inside of the fixing seat.

[0013] Preferably, the top ends of the two connecting rods are fixedly connected with a connecting plate, a threaded cylinder is rotatably connected with the center of the connecting plate, and the bottom end of the threaded cylinder is rotatably connected with the upper surface of the top plate.

[0014] Preferably, the fixing plate and the fixing seat are respectively provided with clamping grooves on opposite sides.

[0015] The utility model has the advantages that:

[0016] 1. The utility model first tightens valve rod by rotating tightening member, removes packing, and adds packing by cooperation of clamping plate one and clamping plate two, so that valve rod can be stably clamped and fixed during the whole maintenance work, thereby avoiding the problem of gas well pressure leakage and accident.

[0017] 2. The utility model rotates screw, so that the fixing plate and the fixing seat can quickly clamp pipeline, realize quick fixing of the device, the pipeline clamp is fixed by means of the structure of gas production tree, no longer needs to additionally set infrastructure to assist the fixing of the device, and the fixing efficiency of the pipeline clamp is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and all other drawings obtained by those skilled in the art without creative labor based on the embodiments of the present application also belong to the scope of protection of the present application.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0020] Figure 2 It is a schematic diagram of the support frame structure of the present application.

[0021] Figure 3 It is a schematic diagram of the pipe valve stem fixing assembly structure of the present application.

[0022] Figure 4 It is a schematic diagram of the unfolded structure of the clamping plate one and the clamping plate two of the present application.

[0023] Figure 5 It is a schematic diagram of the pipe clamp structure of the present application.

[0024] In the figure: 1, support frame; 11, top plate; 12, cylinder; 2, pipe clamp; 21, fixing seat; 22, connecting rod; 23, fixed plate; 24, connecting plate; 25, threaded cylinder; 3, valve stem fixing assembly; 31, clamping plate one; 32, clamping plate two; 33, clamping groove; 34, sliding groove; 35, clamping plate; 36, tension spring; 37, supporting protrusion; 38, tightening piece. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor also belong to the scope of protection of the present application.

[0026] Please refer to Figures 1-5As shown, a kind of with pressure maintenance gas production tree fixed valve rod device, including support frame 1, support frame 1 includes top plate 11, the both sides of top plate 11 are fixedly connected with cylinder body 12 respectively, pipeline clamp 2 is installed at the lower end of cylinder body 12, pipeline clamp 2 is used to clamp the pipeline of gas production tree, valve rod fixing assembly 3 is installed on the surface of cylinder body 12, valve rod fixing assembly 3 includes clamping plate one 31 and clamping plate two 32, clamping plate one 31 is fixedly connected with cylinder body 12, the surface of clamping plate one 31 and clamping plate two 32 is respectively provided with semicircular groove, clamping plate one 31 and clamping plate two 32 are rotatably connected by shaft, the surface of clamping plate one 31 is provided with clamping groove 33, the side wall of one end of clamping plate two 32 is provided with sliding groove 34, clamping plate 35 is slidably connected in the inside of sliding groove 34.

[0027] Specifically, semicircular groove is used to place valve rod, when using, the pipeline of gas production tree is clamped by pipeline clamp 2, when installing, rotate clamping plate two 32 to open semicircular groove, place valve rod in semicircular groove, then rotate clamping plate two 32 to abut against clamping plate one 31, and clamping plate 35 is inserted into the inside of clamping groove 33, clamping plate one 31 and clamping plate two 32 are quickly clamped, so that clamping plate one 31 and clamping plate two 32 can quickly clamp and fix valve rod, improve the maintenance efficiency of gas production tree.

[0028] Clamping plate 35 is provided with L shape, the bottom end of clamping plate 35 is fixedly connected with tension spring 36, the bottom end of tension spring 36 is fixedly connected with the bottom wall of sliding groove 34.

[0029] Specifically, the clamping plate 35 is inserted into the inside of the clamping groove 33 by the tension of the tension spring 36, and the stability of the clamping plate one 31 and the clamping plate two 32 is improved.

[0030] The upper surface of clamping plate one 31 is fixedly provided with a plurality of support protrusions 37.

[0031] Specifically, support protrusion 37 is used to abut against clamping plate two 32 for limiting.

[0032] Valve rod fixing assembly 3 includes jacking piece 38, jacking piece 38 is screw-installed at the center of top plate 11.

[0033] Specifically, the valve rod is tightened by rotating the jacking piece 38, at this time, the damaged packing on the outer periphery of the valve rod can be removed by hinged breaking, after removal, a new packing is sleeved on the outer periphery of the valve rod, the jacking piece 38 is screwed upward, the valve rod is clamped by clamping plate one 31 and clamping plate two 32, the space at the end of the valve rod is opened, at this time, the new packing can be sleeved from the end of the valve rod, the valve rod is fixed by clamping plate one 31 and clamping plate two 32 in cooperation with jacking piece 38, so that the valve rod can be stably clamped and fixed during the whole maintenance work, thereby avoiding the problem of gas well pressure leakage and causing accidents.

[0034] The pipeline clamp 2 comprises a U-shaped fixing seat 21 and two connecting rods 22, the upper surface of the fixing seat 21 is fixedly connected with the bottom end of the cylinder body 12, the cylinder body 12 penetrates through the top plate 11, the connecting rods 22 are inserted into the inside of the cylinder body 12, the bottom end of the connecting rods 22 is fixedly connected with a fixing plate 23, the fixing plate 23 is located in the inside of the fixing seat 21, the top end of the two connecting rods 22 is fixedly connected with a connecting plate 24, a threaded cylinder 25 is rotationally and threadedly connected at the center of the connecting plate 24, and the bottom end of the threaded cylinder 25 is rotationally connected with the upper surface of the top plate 11.

[0035] Specifically, the top pressing piece 38 penetrates through the threaded cylinder 25, when the pipeline clamp 2 is used, the pipeline is placed in the inside of the fixing seat 21, the top plate 11 drives the connecting rods 22 to move downwards by rotating the threaded cylinder 25 to drive the top to move downwards, thereby the fixing plate 23 moves downwards driven by the connecting rods 22, so that the fixing plate 23 is clamped with the fixing seat 21 to fix the pipeline, the device is quickly fixed, the pipeline clamp 2 is fixed by means of the structure of the gas production tree, and additional infrastructure is no longer needed to assist the fixing of the device, thereby the fixing efficiency of the pipeline clamp 2 is improved.

[0036] The fixing plate 23 and the fixing seat 21 are respectively provided with clamping grooves on the opposite sides.

[0037] Specifically, the clamping grooves are used for clamping the pipeline.

[0038] The parts not involved in the device are the same as or can be realized by the prior art.

[0039] Working principle, when in use, the pipeline of the gas production tree is clamped by the pipeline clamp 2, and the valve rod is tightened by rotating the top pressing piece 38, at this time, the damaged packing on the outer periphery of the valve rod can be removed by hinged breaking, after the removal, new packing is sleeved on the outer periphery of the valve rod, the top pressing piece 38 is screwed upwards, the half-arc-shaped groove is opened by rotating the clamping plate two 32, the valve rod is placed in the half-arc-shaped groove, then the clamping plate two 32 is abutted against the clamping plate one 31, and the clamping plate 35 is inserted into the inside of the clamping groove 33, the clamping plate one 31 and the clamping plate two 32 are quickly clamped, so that the clamping plate one 31 and the clamping plate two 32 can quickly clamp and fix the valve rod, thereby the maintenance efficiency of the gas production tree is improved, the space at the end of the valve rod is opened by clamping the valve rod by the clamping plate one 31 and the clamping plate two 32, at this time, the new packing can be sleeved from the end of the valve rod, the valve rod is fixed by the clamping plate one 31 and the clamping plate two 32 and the top pressing piece 38, so that the valve rod can be stably clamped and fixed during the whole maintenance work, thereby the problem that the gas well pressure leaks to cause accidents is avoided.

[0040] When the pipeline clamp 2 is used, the pipeline is placed inside the fixing base 21, the top is moved downward by rotating the threaded cylinder 25, the connecting rod 22 is moved downward by the top plate 11, and the fixing plate 23 is moved downward by the connecting rod 22, so that the fixing plate 23 is clamped with the fixing base 21 to fix the pipeline quickly, the pipeline clamp 2 is fixed by means of the structure of the Christmas tree, and additional infrastructure is no longer needed to assist in fixing the device, and the fixing efficiency of the pipeline clamp 2 is improved.

[0041] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A device for servicing a gas tree stem valve under pressure, comprising a support frame (1), characterized in that: The support frame (1) includes a top plate (11), both sides of the top plate (11) are fixedly connected with a barrel (12), a pipeline clamp (2) is installed at the lower end of the barrel (12), the pipeline clamp (2) is used for clamping the pipeline of a gas production tree, a valve rod fixing assembly (3) is installed on the surface of the barrel (12), the valve rod fixing assembly (3) includes a clamping plate one (31) and a clamping plate two (32), the clamping plate one (31) is fixedly connected with the barrel (12), the surfaces of the clamping plate one (31) and the clamping plate two (32) are respectively provided with semicircular grooves, the clamping plate one (31) and the clamping plate two (32) are rotatably connected through a shaft, the surface of the clamping plate one (31) is provided with a clamping groove (33), one end of the clamping plate two (32) is provided with a sliding groove (34), and the sliding groove (34) is slidably connected with a clamping plate (35).

2. The tubing pressure maintenance Christmas tree stem valve rod setting device of claim 1, wherein: The clamping plate (35) is L-shaped, the bottom end of the clamping plate (35) is fixedly connected with a tension spring (36), and the bottom end of the tension spring (36) is fixedly connected with the bottom wall of the sliding groove (34).

3. The tubing pressure maintenance Christmas tree stem valve rod setting device of claim 1, wherein: The upper surface of the clamping plate one (31) is fixedly provided with a plurality of supporting protrusions (37).

4. The set pressure servicing Christmas tree stem packing device of claim 1, wherein: The valve rod fixing assembly (3) includes a tightening piece (38), and the tightening piece (38) is threadedly installed at the center of the top plate (11).

5. The set pressure servicing Christmas tree stem packing device of claim 1, wherein: The pipeline clamp (2) includes a U-shaped fixing seat (21) and two connecting rods (22), the upper surface of the fixing seat (21) is fixedly connected with the bottom end of the barrel (12), and the barrel (12) penetrates through the top plate (11).

6. The tubing pressure maintenance Christmas tree stem valve rod setting device of claim 5, wherein: The connecting rod (22) is inserted into the barrel (12), and the bottom end of the connecting rod (22) is fixedly connected with a fixing plate (23), and the fixing plate (23) is located in the fixing seat (21).

7. The set pressure servicing Christmas tree stem packing device of claim 6, wherein: The top ends of the two connecting rods (22) are fixedly connected with a connecting plate (24), a threaded barrel (25) is rotatably and threadedly connected at the center of the connecting plate (24), and the bottom end of the threaded barrel (25) is rotatably connected with the upper surface of the top plate (11).

8. The set pressure servicing Christmas tree stem packing device of claim 6, wherein: The fixing plate (23) and the fixing seat (21) are respectively provided with clamping grooves on opposite sides.

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