Oil exploitation valve resistant to high pressure and corrosion

Abstract

The utility model relates to the technical field of valves, in particular to a high-pressure-resistant and corrosion-resistant oil exploitation valve which comprises a valve seat, a liquid inlet pipe is arranged on one side of the valve seat, a liquid outlet pipe is arranged on the other side of the valve seat, a valve element is arranged in the valve seat, an annular groove is formed in the side, close to the valve element, of the liquid inlet pipe, and a sealing piece is arranged on the annular groove. The liquid inlet valve has the beneficial effects that by arranging the sealing piece and the arc-shaped ring, buffering of high pressure borne by the valve element and blocking of impurities in petroleum are achieved, and the problem that the valve element is prone to being damaged and corroded after being impacted by high-pressure petroleum for a long time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-pressure and corrosion-resistant oil production valve. Background Art

[0002] Valves are control components in fluid delivery systems and have functions such as cut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves are often used in oil extraction to control the flow of oil.

[0003] When the valve is conveying oil, the valve core will be impacted by the high-pressure oil. After working for a long time, the valve core is easy to be damaged. At the same time, the impurities contained in the oil remaining in the valve are easy to corrode the valve.

[0004] The sealing ring used in existing valves cannot buffer the high pressure on the valve core when the valve is closed. At the same time, impurities in the oil can easily enter the valve body through the gap between the sealing ring and the valve core. After the valve has been working for a long time, the valve body and valve core are prone to corrosion. Utility Model Content

[0005] The utility model aims to provide a high-pressure and corrosion-resistant oil production valve to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-pressure and corrosion-resistant oil production valve comprises a valve seat, a liquid inlet pipe is arranged on one side of the valve seat, a liquid outlet pipe is arranged on the other side of the valve seat, a valve core is arranged inside the valve seat, an annular groove is arranged on the side of the liquid inlet pipe close to the valve core, a sealing member is arranged on the annular groove, an arc ring is arranged on the sealing member, and the outer diameter of the arc ring is equal to the diameter of the inner cavity of the liquid inlet pipe.

[0008] Preferably, inner groove one is provided at the upper and lower ends of the annular groove, and inner groove two facing inner groove one is provided on the sealing member.

[0009] Preferably, a pair of fasteners is provided on the inner groove 2, a spring is provided between adjacent pairs of fasteners, the inner side of the fasteners is pressed onto the spring, and the outer side of the fasteners is pressed onto the inner groove 1.

[0010] Preferably, a side of the arc-shaped ring close to the valve core is in contact with the arc surface of the valve core.

[0011] Preferably, a through groove is provided in the middle of the valve core, and the through groove communicates with the inner cavities of the liquid inlet pipe and the liquid outlet pipe.

[0012] Preferably, a valve stem is provided at the upper end of the valve core, and a handle is provided at the upper end of the valve stem.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model realizes the buffering of the high pressure received by the valve core and the blocking of impurities in the petroleum by arranging a sealing member and an arc-shaped ring, and solves the problem that the valve core is easily damaged and corroded after being impacted by high-pressure petroleum for a long time. Brief Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 is a side view of the utility model;

[0017] Figure 3 is Figure 2 a schematic cross-sectional structure diagram of A in

[0018] Figure 4 is Figure 3 an enlarged structural schematic diagram of B in

[0019] In the figure: 1, valve seat; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, valve core; 5, valve rod; 6, handle; 7, through groove; 8, sealing member; 9, fastener; 10, annular groove; 11, inner groove one; 12, inner groove two; 13, arc-shaped ring; 14, spring. Detailed Embodiment

[0020] In order to clearly and completely describe the purpose and technical solution of the utility model, and make the advantages more clear, the following further details the embodiments of the utility model with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the utility model, rather than all of the embodiments, and are only used to explain the embodiments of the utility model, not to limit the embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the utility model.

[0021] Embodiment 1

[0022] Please refer to Figures 1-4 , the utility model provides a technical solution: a petroleum extraction valve resistant to high pressure and corrosion, including a valve seat 1, a liquid inlet pipe 2 is arranged on one side of the valve seat 1, a liquid outlet pipe 3 is arranged on the other side of the valve seat 1, a valve core 4 is arranged in the valve seat 1, an annular groove 10 is arranged on the side of the liquid inlet pipe 2 close to the valve core 4, a sealing member 8 is arranged on the annular groove 10, an arc-shaped ring 13 is arranged on the sealing member 8, and the outer diameter of the arc-shaped ring 13 is equal to the inner diameter of the liquid inlet pipe 2.

[0023] By arranging the arc-shaped ring 13, when the valve is closed, the high-pressure petroleum flows along the arc surface, and cannot impact the edge of the valve core 4 along the inner wall of the liquid inlet pipe 2, and at the same time prevents the petroleum from entering the inside of the valve body along the gap between the valve core 4 and the valve seat 1 to corrode the valve.

[0024] Example Two

[0025] On the basis of Example One, inner grooves 11 are provided at both the upper and lower ends of the annular groove 10, and inner grooves 12 facing the inner grooves 11 are provided on the seal 8; a pair of fasteners 9 are provided on the inner grooves 12, a spring 14 is provided between the adjacent pair of fasteners 9, the inner side of the fastener 9 is pressed on the spring 14, and the outer side of the fastener 9 is pressed on the inner groove 11; the side of the arc-shaped ring 13 close to the valve core 4 is in arc contact with the valve core 4.

[0026] By providing the fasteners 9 and the spring 14, a pair of fasteners 9 are elastically inserted into the inner grooves 12 and then misaligned and inserted into the inner grooves 11, so that the seal 8 is fixed and installed in the annular groove 10. The arc-shaped ring 13 is designed with an arc surface and the seal 8 and the arc-shaped ring 13 are integrally connected, so that high-pressure petroleum is not easy to impact the arc-shaped ring 13 and cause the seal 8 to fall off, and buffer the high-pressure petroleum received by the valve core 4, thereby reducing the impact damage of the high-pressure petroleum on the valve core 4.

[0027] Example Three

[0028] On the basis of Example Two, a through groove 7 is provided in the middle of the valve core 4, and the through groove 7 communicates with the inner cavities of the liquid inlet pipe 2 and the liquid outlet pipe 3; a valve rod 5 is provided at the upper end of the valve core 4, and a handle 6 is provided at the upper end of the valve rod 5.

[0029] By providing the valve rod 5 and the handle 6, the valve is convenient to close, and turning the handle 6 drives the rotation of the valve rod 5 and further drives the rotation of the valve core 4.

[0030] During actual use, the through groove 7 of the valve core 4 communicates with the liquid inlet pipe 2 and the liquid outlet pipe 3. High-pressure petroleum flows from the liquid inlet pipe 2 along the arc surface of the arc-shaped ring 13, enters the through groove 7 and flows to the liquid outlet pipe 3. When closing the valve, by turning the handle 6 to drive the rotation of the valve rod 5 and further drive the rotation of the valve core 4, the arc surface of the valve core 4 completely blocks the liquid inlet pipe 2. The high-pressure petroleum is guided along the arc surface of the arc-shaped ring 13, and the petroleum cannot impact the edge of the valve core 4 along the inner wall of the liquid inlet pipe 2. At the same time, it is difficult for the petroleum to enter the inside of the valve body along the gap between the valve core 4 and the valve seat 1 to corrode the valve. The arc-shaped ring 13 is designed with an arc surface and the seal 8 and the arc-shaped ring 13 are integrally connected, so that high-pressure petroleum is not easy to impact the arc-shaped ring 13 and cause the seal 8 to fall off, and buffer the high-pressure petroleum received by the valve core 4, thereby reducing the impact damage of the high-pressure petroleum on the valve core 4.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high pressure and corrosion resistant oil production valve, comprising a valve seat (1), characterized in that: A liquid inlet pipe (2) is arranged on one side of the valve seat (1), a liquid outlet pipe (3) is arranged on the other side of the valve seat (1), a valve core (4) is arranged inside the valve seat (1), an annular groove (10) is arranged on the side of the liquid inlet pipe (2) close to the valve core (4), a sealing member (8) is arranged on the annular groove (10), an arcuate ring (13) is arranged on the sealing member (8), and the outer diameter of the arcuate ring (13) is equal to the diameter of the inner cavity of the liquid inlet pipe (2).

2. The high pressure and corrosion resistant petroleum production valve according to claim 1, characterized in that: The annular groove (10) is provided with an inner groove 1 (11) at both the upper and lower ends, and the sealing member (8) is provided with an inner groove 2 (12) facing the inner groove 1 (11).

3. The high pressure and corrosion resistant petroleum production valve according to claim 2, characterized in that: A pair of fasteners (9) are arranged on the inner groove (12), a spring (14) is arranged between the adjacent pairs of fasteners (9), the inner side of the fasteners (9) is pressed onto the spring (14), and the outer side of the fasteners (9) is pressed onto the inner groove (11).

4. The high pressure and corrosion resistant petroleum production valve according to claim 1, characterized in that: The side of the arc-shaped ring (13) close to the valve core (4) contacts the arc surface of the valve core (4).

5. The high pressure and corrosion resistant petroleum production valve according to claim 1, characterized in that: A through groove (7) is provided in the middle of the valve core (4), and the through groove (7) communicates with the inner cavities of the liquid inlet pipe (2) and the liquid outlet pipe (3).

6. The high pressure and corrosion resistant petroleum production valve according to claim 1, characterized in that: The upper end of the valve core (4) is provided with a valve stem (5), and the upper end of the valve stem (5) is provided with a handle (6).

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