Double-valve-group stop valve

Abstract

A double-valve-group stop valve comprises a valve body and a shutoff valve rod, the stop valve further comprises a pressure relief valve rod, a guide nozzle and a drainage tube, the valve body further comprises a pressure relief valve rod mounting hole, and the pressure relief valve rod is mounted in the pressure relief valve rod mounting hole; the pressure relief runner comprises a first section and a second section, one end of the first section is connected with the outlet runner, the other end of the first section is connected with the bottom of the pressure relief valve rod mounting hole, one end of the second section is connected with the bottom of the pressure relief hole, and the other end of the second section is connected with the hole wall of the pressure relief valve rod mounting hole; one end of the guide nozzle is connected with the pressure relief hole, and the other end of the guide nozzle is connected with the drainage tube; the guide nozzle and the drainage pipe are arranged at the pressure relief hole of the stop valve, one end of the guide nozzle is connected with the pressure relief hole, the other end of the guide nozzle is connected with the drainage pipe, during pressure relief, the pressure relief flow channel is opened through the pressure relief valve rod, the drainage pipe conducts centralized drainage on oil gas, and the situation that the oil gas is sprayed out of the pressure relief hole to pollute the environment during pressure relief is avoided.

Description

Technical Field

[0001] This application relates to the field of petroleum equipment, specifically to a dual-valve shut-off valve. Background Technology

[0002] In oil wellhead equipment, shut-off valves are primarily used in conjunction with pressure gauges to measure oil and gas pressure. The shut-off valve controls the flow of oil and gas through the pressure gauge. When the pressure gauge is measuring oil and gas pressure, the shut-off valve is opened to allow oil and gas to enter the gauge. When the measurement is complete, the shut-off valve is closed to stop the flow of oil and gas. The pressure relief screw at the pressure relief port of the shut-off valve is then loosened using a sleeve or wrench to release pressure on the side connected to the pressure gauge. This prevents the pressure gauge from being constantly under pressure, thus extending its service life.

[0003] In existing technologies, during pressure relief, oil and gas on the side connected to the pressure gauge can be ejected from the pressure relief screw, polluting the environment. How to prevent oil and gas on the side connected to the pressure gauge from being ejected from the pressure relief screw and polluting the environment is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a dual-valve shut-off valve, which solves the technical problem of concentrating the oil and gas flow through the nozzle and the drain pipe at the pressure relief port of the shut-off valve during pressure relief, thereby avoiding the oil and gas from spraying out of the pressure relief port and polluting the environment during pressure relief.

[0005] This application discloses a dual-valve shut-off valve, including a valve body and a shut-off valve stem. The valve body includes an inlet channel, an outlet channel, a shut-off valve stem mounting hole, and a pressure relief hole. The shut-off valve stem is installed in the shut-off valve stem mounting hole to connect and disconnect the inlet channel and the outlet channel. The pressure relief hole is connected to the outlet channel through the pressure relief channel. The outlet channel is connected to the shut-off valve stem mounting hole and a pressure gauge. The shut-off valve also includes a pressure relief valve stem, a nozzle, and a drain pipe. The valve body also includes a pressure relief valve stem mounting hole, on which the pressure relief valve stem is installed. The pressure relief channel includes a first section and a second section. One end of the first section is connected to the outlet channel, and the other end of the first section is connected to the bottom of the pressure relief valve stem mounting hole. One end of the second section is connected to the bottom of the pressure relief hole, and the other end of the second section is connected to the hole wall of the pressure relief valve stem mounting hole. One end of the nozzle is connected to the pressure relief hole, and the other end of the nozzle is connected to the drain pipe.

[0006] In some possible implementations, the valve body is a cuboid, comprising a top surface, a bottom surface, a first elevation, a second elevation, a third elevation, and a fourth elevation; the flow-stopping valve stem is vertically disposed on the top surface of the valve body; the pressure relief valve stem is vertically disposed on the bottom surface of the valve body, and the pressure relief valve stem mounting hole is parallel to the flow-stopping valve stem mounting hole; the inlet channel comprises a horizontal section and a vertical section, the end of the vertical section facing the flow-stopping valve stem is connected to the bottom of the flow-stopping valve stem mounting hole, and the horizontal section connects the first elevation and the vertical section; the outlet channel connects the second elevation and the wall of the flow-stopping valve stem mounting hole; the first elevation and the second elevation are opposite to each other; the pressure relief hole is disposed on the third or fourth elevation adjacent to the first elevation; the first section is vertically disposed; the second section is horizontally disposed.

[0007] In some possible implementations, the valve body is a cuboid, comprising a top surface, a bottom surface, a first elevation, a second elevation, a third elevation, and a fourth elevation; the flow-stopping valve stem is vertically disposed on the top surface of the valve body, the pressure relief hole is disposed on the bottom surface of the valve body, the inlet channel comprises a horizontal section and a vertical section, the end of the vertical section facing the flow-stopping valve stem is connected to the bottom of the flow-stopping valve stem mounting hole, the horizontal section connects the first elevation and the vertical section, the outlet channel connects the second elevation and the hole wall of the flow-stopping valve stem mounting hole, the first elevation and the second elevation are opposite to each other, the pressure relief valve stem is disposed on the third or fourth elevation adjacent to the first elevation, and the pressure relief valve stem mounting hole is perpendicular to the flow-stopping valve stem mounting hole; the first section is horizontally disposed; the second section is vertically disposed.

[0008] In some possible implementations, the nozzle is detachably connected to the pressure relief port.

[0009] In some possible implementations, the nozzle is detachably connected to the drainage tube.

[0010] Beneficial effects: By installing a nozzle and a drain pipe at the pressure relief hole of the shut-off valve, with one end of the nozzle connected to the pressure relief hole and the other end connected to the drain pipe, the pressure relief flow channel is opened by the pressure relief valve stem during pressure relief, and the drain pipe concentrates the oil and gas flow, thus preventing oil and gas from spraying out of the pressure relief hole and polluting the environment during pressure relief.

[0011] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application can be realized and obtained through the following description. Attached Figure Description

[0012] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain and illustrate this application, and should not be construed as limiting the scope of protection of this application.

[0013] Figure 1 This is a sectional view of the dual-valve manifold shut-off valve of this application;

[0014] Figure 2 This is a view of the valve body of the dual-valve shut-off valve of this application;

[0015] The components are: 1. Valve body; 2. Flow control valve stem; 3. Pressure relief valve stem; 4. Nozzle; 5. Drain pipe; 11. Inlet channel; 12. Outlet channel; 13. Flow control valve stem mounting hole; 14. Pressure relief valve stem mounting hole; 15. Pressure relief hole; 16. First elevation; 17. Second elevation; 18. First section; 19. Second section. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the above description of this application, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. They are only used for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0021] like Figure 1-2 As shown, this embodiment provides a dual-valve shut-off valve, including a valve body 1, a shut-off valve stem 2, a pressure relief valve stem 3, a nozzle 4, and a drain pipe 5. The valve body 1 includes an inlet channel 11, an outlet channel 12, a pressure relief channel, a shut-off valve stem mounting hole 13, a pressure relief valve stem mounting hole 14, and a pressure relief hole 15. The pressure relief hole 15 is connected to the outlet channel 12 through the pressure relief channel. The shut-off valve stem 2 is installed in the shut-off valve stem mounting hole 13 to connect and disconnect the inlet channel 11 and the outlet channel 12. The pressure relief valve stem 3 is installed in the pressure relief valve stem mounting hole 14 to connect and disconnect the pressure relief hole 15 and the outlet channel 12.

[0022] The valve body 1 is a cuboid, including a top surface, a bottom surface, and four facades. The four facades include a first facade 16, a second facade 17, a third facade, and a fourth facade. The first facade 16 is opposite to the second facade 17. The outlet channel 12 connects the throttle valve stem mounting hole 13 and the pressure gauge. The inlet channel 11 includes a horizontal section and a vertical section. The end of the vertical section facing the throttle valve stem 2 is connected to the bottom of the throttle valve stem mounting hole 13. The horizontal section connects the first facade 16 and the vertical section. The outlet channel 12 connects the second facade 17 and the hole wall of the throttle valve stem mounting hole 13.

[0023] The shut-off valve stem mounting hole 13 is located on the top surface of the valve body 1, and the pressure relief valve stem mounting hole 14 is located on the bottom or vertical surface of the valve body 1. When the pressure relief valve stem mounting hole 14 is located on the bottom surface of the valve body 1, it is parallel to the shut-off valve stem mounting hole 13, while the pressure relief hole 15 is located on the third or fourth vertical surface. To minimize costs, the thickness of the shut-off valve is minimized, and the pressure relief hole 15 has a certain depth. To avoid damaging the pressure relief flow channel during processing, the axis of the pressure relief hole 15 is perpendicular to the axis of the pressure relief valve stem mounting hole 14, but there is a distance between them, that is, the axis of the pressure relief hole 15 and the axis of the pressure relief valve stem mounting hole 14 are not on the same plane. When the pressure relief valve stem mounting hole 14 is located on the vertical surface of the valve body 1, it is perpendicular to the shut-off valve stem mounting hole 13, and the pressure relief hole 15 is located on the bottom surface.

[0024] The pressure relief channel includes a first section 18 and a second section 19. The first section 18 is vertically arranged, and the second section 19 is horizontally arranged. One end of the first section 18 is connected to the outlet channel 12, and the other end of the first section 18 is connected to the bottom of the pressure relief valve stem mounting hole 14. One end of the second section 19 is connected to the bottom of the pressure relief hole 15, and the other end of the second section 19 is connected to the hole wall of the pressure relief valve stem mounting hole 14.

[0025] One end of the nozzle 4 is connected to the pressure relief hole 15. The nozzle 4 and the pressure relief hole 15 can be detachably connected or fixedly connected. The other end of the nozzle 4 is connected to the drainage tube 5. The nozzle 4 and the drainage tube 5 can be detachably connected.

[0026] By installing a nozzle 4 and a drain pipe 5 at the pressure relief hole 15 of the shut-off valve, one end of the nozzle 4 is connected to the pressure relief hole 15 and the other end of the nozzle 4 is connected to the drain pipe 5. When the pressure is relieved, the pressure relief flow channel is opened by the pressure relief valve stem 3, and the drain pipe 5 concentrates the oil and gas flow, so as to prevent the oil and gas from spraying out from the pressure relief hole 15 and polluting the environment when the pressure is relieved.

[0027] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

[0028] Those skilled in the art will understand that the descriptions of the various embodiments have different focuses, and for parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0029] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application. All such modifications and variations fall within the scope defined by the appended claims. The above are merely specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this application should be determined by the scope of the claims.

Claims

1. A dual-valve shut-off valve, comprising a valve body and a shut-off valve stem, wherein the valve body includes an inlet channel, an outlet channel, a shut-off valve stem mounting hole, and a pressure relief hole; the shut-off valve stem is installed in the shut-off valve stem mounting hole for connecting and disconnecting the inlet channel and the outlet channel; the pressure relief hole is connected to the outlet channel through the pressure relief channel; the outlet channel is connected to the shut-off valve stem mounting hole and a pressure gauge, characterized in that... The shut-off valve further includes a pressure relief valve stem, a nozzle, and a drain pipe. The valve body also includes a pressure relief valve stem mounting hole, on which the pressure relief valve stem is mounted. The pressure relief flow channel includes a first section and a second section. One end of the first section is connected to the outlet channel, and the other end of the first section is connected to the bottom of the pressure relief valve stem mounting hole. One end of the second section is connected to the bottom of the pressure relief hole, and the other end of the second section is connected to the hole wall of the pressure relief valve stem mounting hole. One end of the nozzle is connected to the pressure relief hole, and the other end of the nozzle is connected to the drain pipe.

2. The dual-valve shut-off valve according to claim 1, characterized in that, The valve body is a cuboid, comprising a top surface, a bottom surface, a first elevation, a second elevation, a third elevation, and a fourth elevation. A flow-stopping valve stem is vertically positioned on the top surface of the valve body. A pressure-relief valve stem is vertically positioned on the bottom surface of the valve body, with the pressure-relief valve stem mounting hole parallel to the flow-stopping valve stem mounting hole. The inlet channel comprises a horizontal section and a vertical section. The end of the vertical section facing the flow-stopping valve stem connects to the bottom of the flow-stopping valve stem mounting hole. The horizontal section connects the first elevation and the vertical section. The outlet channel connects the second elevation and the wall of the flow-stopping valve stem mounting hole. The first elevation and the second elevation are opposite each other. The pressure-relief hole is located on the third or fourth elevation adjacent to the first elevation. The first section is vertically positioned; the second section is horizontally positioned.

3. The dual-valve shut-off valve according to claim 1, characterized in that, The valve body is a cuboid, comprising a top surface, a bottom surface, a first elevation, a second elevation, a third elevation, and a fourth elevation. A flow-stopping valve stem is vertically positioned on the top surface of the valve body, and a pressure relief hole is located on the bottom surface of the valve body. The inlet channel comprises a horizontal section and a vertical section. The end of the vertical section facing the flow-stopping valve stem is connected to the bottom of the flow-stopping valve stem mounting hole. The horizontal section connects the first elevation and the vertical section. The outlet channel connects the second elevation and the wall of the flow-stopping valve stem mounting hole. The first elevation and the second elevation are opposite each other. The pressure relief valve stem is positioned on the third or fourth elevation adjacent to the first elevation. The pressure relief valve stem mounting hole is perpendicular to the flow-stopping valve stem mounting hole. The first section is horizontally positioned, and the second section is vertically positioned.

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