Well head gas recovery pressure adjusting tool

Abstract

The wellhead gas recovery pressure adjusting tool comprises a device body, the device body comprises an upper shell and a lower shell, an inner cavity is formed in the bottom of the upper shell, an inner cavity is formed in the top of the lower shell, sliding guide rails are arranged on the two sides of the bottom of the inner cavity of the upper shell, and sliding inner cavities are formed in the inner side faces of the sliding guide rails. The top of the lower shell is located in the inner cavity of the upper shell, the inner side face of the sliding plate is connected with the outer surface of the lower shell, a lower shell top plate is arranged at an opening in the top of the lower shell, through holes are formed in the centers of the top and the bottom of the lower shell top plate, and ejector rods are slidably connected to the through holes. The bottom of the ejector rod is located in an inner cavity of the lower shell, a sliding block is arranged at the bottom of the ejector rod, and a pressure channel is formed in the center of the bottom of the lower shell. In the whole process, compared with rotation adjustment in the prior art, stretching adjustment is simpler, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wellhead gas recovery, in particular to a wellhead gas recovery pressure regulating tool. Background Art

[0002] The main component of wellhead gas is methane, but it also contains a certain proportion of water, light oil and other impurities. During the extraction process, wellhead gas needs to go through multiple processes, including recovery, and then use wellhead gas recovery equipment.

[0003] China's authorized utility model disclosure (announcement) number: CN203335037U An oil wellhead residual gas recovery and pressurized gas injection device includes a water-gas pre-separation cylinder with an oil-gas mixture inlet, a drain valve is provided at the lower end of the water-gas pre-separation cylinder, a gas-water separation baffle is provided in the water-gas pre-separation cylinder, the water-gas pre-separation cylinder is connected to the input port of the compressor through an input pipe, a valve is provided on the input pipe, a counterweight float for controlling the opening and closing of the valve is provided in the water-gas pre-separation cylinder, an air inlet pressure controller is provided on the water-gas pre-separation cylinder, the output port of the compressor is connected to the oil and gas pipeline through an output pipe, and an air outlet pressure controller is provided on the output pipe.

[0004] It can be seen from this that the wellhead gas recovery device in the prior art is provided with an inlet pressure controller and an outlet pressure controller. However, although the inlet pressure controller and the outlet pressure controller in the prior art can be controlled according to the pressure range set by the user, it is necessary to rotate the pressure regulating screw or knob to adjust the set pressure. Rotating the pressure regulating screw clockwise increases the set pressure; rotating the pressure regulating screw counterclockwise decreases the set pressure. Utility Model Content

[0005] The purpose of the present invention is to provide a wellhead gas recovery pressure regulating tool that facilitates pressure regulation by a pressure controller, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The wellhead gas recovery pressure regulating tool includes a device body, which includes an upper shell and a lower shell, the bottom of the upper shell is provided with an inner cavity, the top of the lower shell is provided with an inner cavity, sliding guide rails are provided on both sides of the bottom of the inner cavity of the upper shell, the inner side surface of the sliding guide rails is provided with a sliding inner cavity, a sliding plate is slidably connected to the sliding inner cavity, the top of the lower shell is located inside the inner cavity of the upper shell, the inner side surface of the sliding plate is connected to the outer surface of the lower shell, a lower shell top plate is provided at the top opening of the lower shell, through holes are provided at the top and bottom center of the lower shell top plate, a push rod is slidably connected at the through hole, the bottom of the push rod is located in the inner cavity of the lower shell, a sliding block is provided at the bottom of the push rod, and a pressure channel is provided at the bottom center of the lower shell.

[0008] Preferably, the inner cavity of the upper shell is provided with an upper shell baffle, and the top of the upper shell baffle is fixedly connected with a micro switch.

[0009] Preferably, the top of the push rod passes through the upper shell baffle and is located at the bottom of the micro switch.

[0010] Preferably, the diameter of the sliding block matches the diameter of the inner cavity of the lower shell.

[0011] Preferably, a spring is sleeved on the surface of the push rod, the top end of the spring is connected to the bottom of the top plate of the lower shell, and the bottom end of the spring is connected to the top of the sliding block.

[0012] Preferably, a plurality of telescopic rods are provided on the top of the lower shell, and the tops of the telescopic rods are connected to the bottom of the upper shell.

[0013] Preferably, the inner diameter of the pressure channel is larger than the diameter of the ejector rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The wellhead gas recovery pressure regulating tool of the present invention, when adjusting the pressure, pulls the upper shell upward, thereby reducing the part of the lower shell located inside the upper shell, and moving the bottom of the push rod away from the micro switch, so that the triggering pressure of the micro switch by the pressure source is changed. Compared with the rotation adjustment in the prior art, the stretching adjustment in the whole process is simpler and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0017] In the figure: 1. Device body; 101. Upper shell; 102. Lower shell; 2. Micro switch; 3. Upper shell baffle; 4. Lower shell top plate; 5. Sliding guide rail; 6. Sliding inner cavity; 7. Sliding plate; 8. Telescopic rod; 9. Push rod; 10. Sliding block; 11. Spring; 12. Pressure channel. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] See also Figure 1 , the utility model provides a technical solution:

[0022] A wellhead gas recovery pressure regulating tool includes a device body 1, which includes an upper shell 101 and a lower shell 102. An inner cavity is opened at the bottom of the upper shell 101, and an inner cavity is opened at the top of the lower shell 102. Sliding guide rails 5 are arranged on both sides of the bottom of the inner cavity of the upper shell 101, and a sliding inner cavity 6 is opened on the inner side of the sliding guide rail 5. A sliding plate 7 is slidably connected to the sliding inner cavity 6. The top of the lower shell 102 is located inside the inner cavity of the upper shell 101, and the inner side of the sliding plate 7 is connected to the outer surface of the lower shell 102. A lower shell top plate 4 is provided at the top opening of the lower shell 102, and through holes are opened at the top and bottom center of the lower shell top plate 4. A push rod 9 is slidably connected at the through hole, and the bottom of the push rod 9 is located in the inner cavity of the lower shell 102. A sliding block 10 is provided at the bottom of the push rod 9, and a pressure channel 12 is provided at the bottom center of the lower shell 102.

[0023] Furthermore, an upper shell baffle 3 is provided in the inner cavity of the upper shell 101 , and a micro switch 2 is fixedly connected to the top of the upper shell baffle 3 .

[0024] Furthermore, the top of the push rod 9 passes through the upper housing baffle 3 and is located at the bottom of the micro switch 2 .

[0025] Furthermore, the diameter of the sliding block 10 matches the inner diameter of the lower housing 102 , so that the sliding block 10 can be limited at the lower housing 102 , facilitating the movement of the sliding block 10 .

[0026] Furthermore, a spring 11 is sleeved on the surface of the push rod 9 , the top end of the spring 11 is connected to the bottom of the top plate 4 of the lower shell, and the bottom end of the spring 11 is connected to the top of the sliding block 10 .

[0027] Specifically, during the movement of the sliding block 10 , the spring 11 will be compressed, thus providing a certain buffering effect on the device body 1 .

[0028] Furthermore, a plurality of telescopic rods 8 are provided on the top of the lower housing 102 , and the tops of the telescopic rods 8 are connected to the bottom of the upper housing 101 .

[0029] Specifically, during the upward movement of the upper shell 101, the sliding plate 7 at the lower shell 102 slides downward along the sliding inner cavity 6, thereby stretching the telescopic rod 8. The telescopic rod 8 connects the upper shell 101 and the lower shell 102, facilitating the use of the device body 1.

[0030] Furthermore, the inner diameter of the pressure channel 12 is larger than the diameter of the push rod 9 .

[0031] Working principle: The pressure regulating gadget of the utility model is placed at the bottom of the inlet pressure controller and the outlet pressure controller of the wellhead gas recovery device, that is, the pressure pipe 12 is placed at the pipe inside the inlet gas recovery device. The pressure at the pressure source will push the sliding block 10, and the sliding block 10 will push the push rod 9 upward after being pushed. When the push rod 9 is pushed to the bottom of the micro switch 2, the micro switch 2 will be triggered.

[0032] When adjusting the pressure, the upper shell 101 is pulled upward, thereby reducing the part of the lower shell 102 located inside the upper shell 101, and the bottom of the push rod 9 is moved away from the micro switch 2. In order to trigger the micro switch 2 again through the push rod 9, the triggering pressure of the micro switch 2 by the pressure source is increased, thereby adjusting the pressure value. Compared with the pressure controller in the prior art for adjusting the pressure, the stretching and pressing method is simpler than the rotation adjustment and is more convenient to use.

[0033] Although the 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 may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wellhead gas recovery pressure regulating tool, comprising a device body (1), characterized in that: The device body (1) includes an upper shell (101) and a lower shell (102), wherein an inner cavity is provided at the bottom of the upper shell (101), and an inner cavity is provided at the top of the lower shell (102), and sliding guide rails (5) are provided on both sides of the inner cavity bottom of the upper shell (101), and a sliding inner cavity (6) is provided on the inner side surface of the sliding guide rail (5), and a sliding plate (7) is slidably connected to the sliding inner cavity (6), and the top of the lower shell (102) is located in the inner cavity of the upper shell (101). The inner side surface of the sliding plate (7) is connected to the outer surface of the lower shell (102), a lower shell top plate (4) is provided at the top opening of the lower shell (102), through holes are provided at the top and bottom centers of the lower shell top plate (4), a push rod (9) is slidably connected at the through holes, the bottom of the push rod (9) is located in the inner cavity of the lower shell (102), a sliding block (10) is provided at the bottom of the push rod (9), and a pressure channel (12) is provided at the bottom center of the lower shell (102).

2. The wellhead gas recovery pressure regulating tool according to claim 1, characterized in that: The inner cavity of the upper shell (101) is provided with an upper shell baffle (3), and the top of the upper shell baffle (3) is fixedly connected with a micro switch (2).

3. The wellhead gas recovery pressure regulating tool according to claim 2, characterized in that: The top of the push rod (9) passes through the upper housing baffle (3) and is located at the bottom of the micro switch (2).

4. The wellhead gas recovery pressure regulating tool according to claim 1, characterized in that: The diameter of the sliding block (10) matches the inner diameter of the lower housing (102).

5. The wellhead gas recovery pressure regulating tool according to claim 1, characterized in that: A spring (11) is sleeved on the surface of the push rod (9), the top end of the spring (11) is connected to the bottom of the top plate (4) of the lower shell, and the bottom end of the spring (11) is connected to the top of the sliding block (10).

6. The wellhead gas recovery pressure regulating tool according to claim 1, characterized in that: A plurality of telescopic rods (8) are provided on the top of the lower shell (102), and the tops of the telescopic rods (8) are connected to the bottom of the upper shell (101).

7. The wellhead gas recovery pressure regulating tool according to claim 1, characterized in that: The inner diameter of the pressure channel (12) is larger than the diameter of the push rod (9).

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