Novel horizontal Christmas tree safety valve

Abstract

The utility model discloses a novel horizontal Christmas tree safety valve which comprises a valve body. The liquid inlet pipe is fixedly mounted in the valve body; the sliding block is arranged in the valve body in a sliding mode, and a liquid storage cavity is formed in the sliding block; the telescopic boxes are arranged at the top end of the sliding block in a circumferential array mode and communicate with the liquid storage cavity. The first spring is fixedly mounted in the telescopic box; the sealing assembly at least comprises a sealing cover which is arranged at the axis of the sliding block and abuts against the top end of the liquid inlet pipe. According to the novel horizontal Christmas tree safety valve, cooling oil is poured into the telescopic box, so that the cooling oil can isolate external high temperature, the first spring is prevented from being affected by the external high temperature to be damaged in the long-time working process, meanwhile, external air and moisture can be isolated, and the service life of the first spring is prolonged. The first spring is prevented from being rusted, the service life of the first spring is prolonged, the first spring can be prevented from being damaged by high temperature, and the safety of the safety valve in the working process can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of safety valve, specifically relates to a novel horizontal Christmas tree safety valve. BACKGROUND

[0002] In today's oil exploitation field, the Christmas tree as the key equipment connecting the wellhead and oil and gas transmission pipeline, its attached safety valve plays a vital role. Safety valve can automatically open when the system pressure abnormally rises, and the excess fluid or gas is discharged, so as to protect the whole oil production system from the impact of excessive pressure and prevent serious accidents such as explosion and leakage.

[0003] However, the working environment of the Christmas tree safety valve is often extremely harsh. In the oil and gas exploitation site, the safety valve needs to be exposed to high temperature, high pressure and corrosive substances for a long time, so that the metal material inside the safety valve is under the action of continuous thermal stress. With the passage of time, the activity between metal atoms intensifies, the crystal structure of the material changes, and the mechanical properties of the metal are significantly reduced. Especially in the core component metal spring of the safety valve, the influence is more obvious. The spring works at high temperature for a long time, and its elastic modulus will gradually decrease, and the elastic limit will also change, so that the spring is more likely to deform within the normal working range, which seriously reduces the safety of the safety valve.

[0004] Therefore, it is necessary to provide a novel horizontal Christmas tree safety valve to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a novel horizontal Christmas tree safety valve, which solves the above problems.

[0006] In order to realize the above purpose, the utility model provides the following technical scheme: a novel horizontal Christmas tree safety valve, comprising:

[0007] Valve body;

[0008] Liquid inlet pipe fixedly installed in the valve body;

[0009] Sliding block slidingly arranged in the valve body, the sliding block is provided with a liquid storage cavity;

[0010] The telescopic box is arranged in a circumferential array at the top end of the sliding block and is connected with the liquid storage cavity;

[0011] The first spring is fixedly installed in the telescopic box;

[0012] The sealing assembly comprises at least a sealing cover arranged at the axis of the sliding block and abutting against the top end of the liquid inlet pipe.

[0013] The valve rod is fixedly connected with a sealing cover at the bottom end.

[0014] The bottom end of the telescopic box is fixedly connected with a guide pipe.

[0015] The bottom end of the telescopic box is fixedly connected with a guide pipe.

[0016] The side wall of the valve body is fixedly connected with a liquid outlet pipe.

[0017] In the above technical solution, the novel horizontal Christmas tree safety valve has the following beneficial effects:

[0018] The valve body, the liquid inlet pipe, the sliding block, the liquid storage cavity, the telescopic box, the first spring and the sealing rod are arranged, so that the first spring in the valve body can be conveniently protected, the first spring is arranged in the telescopic box, the telescopic box can protect the first spring, prevents external dust and corrosive substances from contacting the first spring, the cooling oil in the telescopic box can isolate external high temperature, prevents the first spring from being damaged due to external high temperature in a long-time working process, and can also isolate external air and moisture, prevents the first spring from rusting, prolongs the service life of the first spring, prevents the first spring from being damaged due to high temperature, and improves the safety of the safety valve in the working process. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0020] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0021] Fig. 2 It is a schematic diagram of the cross-sectional structure of the telescopic box of the present application;

[0022] Fig. 3 It is a schematic diagram of the cross-sectional structure of the push plate of the present application.

[0023] Explanation of reference signs:

[0024] 1. Valve body; 2. Inlet pipe; 3. Valve stem; 4. Telescopic box; 5. First spring; 6. Sliding block; 7. Liquid storage chamber; 8. Elastic element; 9. Push plate; 10. Guide tube; 12. Sealing cover; 13. Outlet pipe. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] like Figs. 1-3 As shown, a novel horizontal tree trunk safety valve includes:

[0027] Valve body 1;

[0028] The inlet pipe 2 is fixedly installed inside the valve body 1;

[0029] A slider 6 is slidably disposed within the valve body 1, and a liquid storage chamber 7 is provided within the slider 6;

[0030] Telescopic box 4, arranged in a circular array at the top of slider 6 and connected to liquid storage chamber 7;

[0031] The first spring 5 is fixedly installed inside the telescopic box 4;

[0032] A sealing assembly, including at least a sealing cap 12 disposed at the axis of the slider 6 and abutting the top of the inlet pipe 2.

[0033] Specifically, when the internal pressure of the oil well suddenly increases during production, oil, gas, and other media in the well will rapidly flow into the inlet pipe 2. The force exerted by the oil, gas, and other media on the sealing cap 12 exceeds the preload of the first spring 5, causing the sealing cap 12 at the top of the inlet pipe 2 to be pushed open, thus forming a pressure relief channel. When the sealing cap 12 is pushed open, it will push the slider 6 to move towards the top of the valve body 1, so that the slider 6 provides pressure to the telescopic box 4, thereby deforming the first spring 5 installed in the telescopic box 4. At the same time, the telescopic box 4 will also fold. When the telescopic box 4 folds along with the first spring 5, the cooling oil stored in the telescopic box 4 is pressurized and injected into the liquid storage chamber 7 opened in the slider 6. The cooling oil is stored in the liquid storage chamber 7 opened in the slider 6, so that the telescopic box 4 can fold freely when under pressure. After the oil well is depressurized, the first spring 5 is contracted to push the telescopic box 4 to unfold, so that the telescopic box 4 pushes the slider 6 to slide towards the bottom of the valve body 1, so that the slider 6 pushes the sealing cap 12 to reseal the inlet pipe 2.

[0034] In the above embodiment, the first spring 5 in the valve body 1 is protected by the valve body 1, the liquid inlet pipe 2, the sliding block 6, the liquid storage cavity 7, the telescopic box 4, the first spring 5 and the sealing rod. The first spring 5 is installed in the telescopic box 4, so that the telescopic box 4 protects the first spring 5 from being contacted with external dust and corrosive substances. The cooling oil is injected into the telescopic box 4, so that the cooling oil can isolate external high temperature, prevent the first spring 5 from being damaged by external high temperature during long-time work, and isolate external air and moisture to prevent the first spring 5 from rusting, thereby prolonging the service life of the first spring 5, preventing the first spring 5 from being damaged by high temperature, and improving the safety of the safety valve during work.

[0035] As a further provided embodiment of the utility model, the sliding block 6 is fixedly installed with a valve rod 3 at the shaft center, and the bottom end of the valve rod 3 is fixedly connected with a sealing cover 12.

[0036] Specifically, the valve rod 3 installed on the sliding block 6 is connected with the sealing cover 12, so that when the sealing cover 12 is pushed to move upwards, the valve rod 3 is pushed, so that the sliding block 6 and the sealing cover 12 can move synchronously.

[0037] As a further provided embodiment of the utility model, the bottom end of the telescopic box 4 is fixedly installed with a guide pipe 10, and one end of the guide pipe 10 is fixedly connected to the liquid storage cavity 7.

[0038] Specifically, when the sliding block 6 pushes the telescopic box 4 and the first spring 5 to shrink and deform, the guide pipe 10 installed at the bottom of the telescopic box 4 is connected with the liquid storage cavity 7, so that the cooling oil in the telescopic box 4 is pressed to flow into the liquid storage cavity 7 through the guide pipe 10 and is stored.

[0039] As a further provided embodiment of the utility model, the liquid storage cavity 7 is fixedly installed with an elastic element 8, and the end surface of the elastic element 8 is fixedly installed with a push plate 9.

[0040] Specifically, when the cooling oil flows into the liquid storage cavity 7 through the guide pipe 10, the push plate 9 is pushed to slide downwards by the cooling oil, so that the push plate 9 pushes the elastic element 8 to deform and store force. When the telescopic box 4 expands, the push plate 9 is pushed to move upwards by the elastic element 8, so that the push plate 9 provides a pushing force to the cooling oil stored in the liquid storage cavity 7, so that the cooling oil flows back to the telescopic box 4 through the guide pipe 10. The cooling oil flows back to the telescopic box 4, so that the cooling oil can continuously provide cooling protection to the first spring 5.

[0041] As a further provided embodiment of the utility model, the side wall of the valve body 1 is fixedly installed with a liquid outlet pipe 13.

[0042] Specifically, by installing the outlet pipe 13 on the side wall of the valve body 1, the oil and gas medium entering the valve body 1 along the inlet pipe 2 can flow out along the outlet pipe 13, so that the inlet pipe 2 and the outlet pipe 13 form a pressure relief channel.

[0043] Working principle: when the pressure generated in the oil well needs to be relieved, the oil and gas medium flows into the inlet pipe 2, so that the oil and gas medium pushes the sealing cover 12 at the top end of the inlet pipe 2 to open, when the sealing cover 12 is opened, the oil and gas medium enters the valve body 1 and flows out along the outlet pipe 13, so that the oil well can complete pressure relief, when the sealing cover 12 is pushed to move upward, the sealing cover 12 pushes the valve rod 3 to move upward, so that the valve rod 3 can drive the sliding block 6 to move upward synchronously in the process of moving upward, so that the sliding block 6 extrudes the telescopic box 4 and the first spring 5 to generate shrinkage deformation in the process of moving to the top end of the valve body 1, when the telescopic box 4 is folded, the cooling oil filled in the telescopic box 4 flows into the storage cavity 7 through the conduit 10 for storage, so that the first spring 5 can normally shrink and deform, when the oil well pressure relief is completed, the first spring 5 pushes the telescopic box to expand, so that the telescopic box pushes the sliding block 6 to slide to the bottom end of the valve body 1, so that the sliding block 6 and the valve rod 3 cooperate to push the sealing cover 12 to reseal the conduit 10, and the elastic member 8 pushes the push plate 9 to extrude the cooling oil stored in the storage cavity 7, so that the cooling oil flows back to the telescopic box 4 through the conduit 10, so that the cooling oil can continuously protect the first spring 5, avoiding damage to the first spring 5 caused by high temperature.

[0044] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above description and drawings are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. A new type of horizontal Christmas tree safety valve, characterized in that, Comprising: a valve body (1); a liquid inlet pipe (2) fixedly installed in the valve body (1); a sliding block (6) slidingly arranged in the valve body (1), wherein a liquid storage cavity (7) is formed in the sliding block (6); a telescopic box (4) arranged in a circumferential array at the top end of the sliding block (6) and connected with the liquid storage cavity (7); a first spring (5) fixedly installed in the telescopic box (4); a sealing assembly, at least comprising a sealing cover (12) arranged at the axis of the sliding block (6) and abutting against the top end of the liquid inlet pipe (2).

2. A new type of horizontal Christmas tree safety valve according to claim 1, characterized in that, A valve rod (3) is fixedly installed at the axis of the sliding block (6), and the bottom end of the valve rod (3) is fixedly connected with the sealing cover (12).

3. A new type of horizontal Christmas tree safety valve according to claim 1, characterized in that, A guide pipe (10) is fixedly installed at the bottom end of the telescopic box (4), and one end of the guide pipe (10) is fixedly connected with the liquid storage cavity (7).

4. A new type of horizontal Christmas tree safety valve according to claim 3, characterized in that, An elastic member (8) is fixedly installed in the liquid storage cavity (7), and a push plate (9) is fixedly installed on the end face of the elastic member (8).

5. A new type of horizontal Christmas tree safety valve according to claim 1, characterized in that, A liquid outlet pipe (13) is fixedly installed on the side wall of the valve body (1).

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