Natural gas wellhead drainage metering device

Abstract

The utility model relates to the technical field of natural gas extraction equipment, and discloses a natural gas wellhead drainage metering device which comprises a gas-liquid separation tank, a gas outlet mechanism is arranged above the gas-liquid separation tank, a metering mechanism is arranged below the gas-liquid separation tank, and the metering mechanism comprises a second threaded groove. Visual liquid level display is provided through the liquid level meter arranged in the middle of the lower portion of the front face of the gas-liquid separation tank, and the liquid level transmitter arranged on the right side of the gas-liquid separation tank is responsible for converting liquid level signals into proportional electronic signals and outputting the electronic signals so that the electronic signals can be remotely transmitted into a control system. A valve element of the liquid drainage electromagnetic valve is operated through a magnetic field generated by electrification of an electromagnetic coil, so that a fluid channel is opened or closed, the controller controls liquid drainage at a high liquid level and closing of the liquid drainage electromagnetic valve at a low liquid level in the gas-liquid separator, and the liquid drainage amount is calculated by accumulatively counting the liquid drainage times in a period. Therefore, the function of accurately mastering the liquid outlet amount of the well mouth can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas exploitation equipment technical field, concretely is a kind of natural gas wellhead liquid discharge metering device. BACKGROUND

[0002] In the natural gas exploitation process, natural gas well will usually be accompanied by a certain amount of liquid, these liquids can include condensate oil, water and a small amount of other ingredients, with the production process, especially when gas reservoir pressure drops, the proportion of this associated liquid can increase, in order to maintain the effective production of gas well, must be regularly discharged, i.e. through the liquid in the well is discharged by specific technology and equipment, to reduce the obstruction to natural gas flow, ensure the productivity of gas well.

[0003] However, accurately measuring the amount of discharged liquid during the liquid discharge process is crucial for oil and gas field management and environmental protection, and the traditional liquid discharge method often relies on manual experience and simple mechanical structure, and it is difficult to realize efficient, accurate control and measurement. UTILITY MODEL CONTENT

[0004] (1) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of natural gas wellhead liquid discharge metering device, with the advantages of accurately mastering the liquid discharge of wellhead, solve the problems mentioned in the above background technology.

[0006] (2) technical scheme

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of natural gas wellhead liquid discharge metering device, including gas-liquid separation tank, the upper portion of the gas-liquid separation tank is provided with gas outlet mechanism, the lower portion of the gas-liquid separation tank is provided with metering mechanism, the metering mechanism includes second screw groove, the second screw groove is opened in the lower surface of gas-liquid separation tank, the lower portion of the second screw groove is provided with second screw pipe, the bottom of the second screw pipe is fixedly connected with bottom disc, the front lower portion of the gas-liquid separation tank is provided with liquid level meter, the lower surface of the bottom disc is fixedly connected with liquid discharge pipe in middle portion, the bottom of the liquid discharge pipe is fixedly installed with manual liquid discharge valve, the right side outside of the liquid level meter is provided with liquid level transmitter, the right side middle portion of the bottom disc is provided with liquid discharge solenoid valve.

[0008] Preferably, the outer surface of the gas-liquid separation tank is fixedly connected with a plurality of support legs in the middle portion, the bottom of the support leg is fixedly connected with rubber pad.

[0009] Preferably, the front middle portion of the gas-liquid separation tank is fixedly connected with gas inlet pipe.

[0010] Three support legs are evenly and vertically connected to the middle part of the outer surface of the gas-liquid separation tank, and the rubber pad can improve the stability when the support legs support, and the natural gas enters the inside of the gas-liquid separation tank through the gas inlet pipe.

[0011] Preferably, the gas outlet mechanism comprises a first threaded groove, which is arranged on the upper surface of the gas-liquid separation tank.

[0012] Preferably, a first threaded pipe is arranged above the first threaded groove, and a cover disc is fixedly connected to the upper surface of the first threaded pipe.

[0013] Preferably, a gas outlet pipe is fixedly connected to the middle part of the upper surface of the cover disc.

[0014] The first threaded groove is arranged on the upper surface of the gas-liquid separation tank, the first threaded pipe can be screwed in the first threaded groove, the cover disc can be screwed with the gas-liquid separation tank through the first threaded pipe at the bottom, the gas in the gas-liquid separation tank can be discharged outward through the gas outlet pipe.

[0015] Compared with the prior art, the natural gas wellhead liquid discharge metering device has the following beneficial effects:

[0016] 1、The liquid level meter arranged at the middle part of the front surface of the gas-liquid separation tank provides intuitive liquid level display, and the liquid level transmitter arranged on the right side is responsible for converting the liquid level signal into proportional electronic signal output, so as to be transmitted to the control system at a long distance, the liquid discharge electromagnetic valve is operated by the magnetic field generated by the energization of the electromagnetic coil, so as to open or close the fluid passage, the controller controls the liquid discharge when the liquid level in the gas-liquid separator is high, and closes the liquid discharge electromagnetic valve when the liquid level is low, the liquid discharge times in a statistical period are accumulated and counted, and the liquid discharge amount is calculated, so that the liquid discharge amount of the wellhead can be accurately mastered.

[0017] 2、The first threaded groove is arranged on the upper surface of the gas-liquid separation tank, the first threaded pipe can be screwed in the first threaded groove, and the cover disc can be screwed with the gas-liquid separation tank through the first threaded pipe at the bottom, so that the cover disc can be conveniently disassembled by the operator. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a front view sectional view structure schematic view of the utility model.

[0020] Wherein: 1, gas-liquid separation tank; 101, support leg; 102, rubber pad; 103, air inlet pipe; 2, air outlet mechanism; 201, first threaded groove; 202, first threaded pipe; 203, cover disc; 204, air outlet pipe; 3, metering mechanism; 301, second threaded groove; 302, second threaded pipe; 303, bottom disc; 304, liquid level meter; 305, liquid discharge pipe; 306, manual liquid discharge valve; 307, liquid level transmitter; 308, liquid discharge solenoid valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-2The utility model provides a kind of natural gas wellhead liquid discharge metering device, including gas-liquid separation tank 1, the upper portion of gas-liquid separation tank 1 is provided with gas outlet mechanism 2, the lower portion of gas-liquid separation tank 1 is provided with metering mechanism 3, metering mechanism 3 includes second screw groove 301, second screw groove 301 is opened in the lower surface of gas-liquid separation tank 1, the lower portion of second screw groove 301 is provided with second screw pipe 302, the bottom of second screw pipe 302 is fixedly connected with bottom disc 303, the front lower portion of gas-liquid separation tank 1 is provided with liquid level meter 304, the lower surface of bottom disc 303 is fixedly connected with liquid discharge pipe 305, the bottom of liquid discharge pipe 305 is fixedly installed with manual liquid discharge valve 306, the right side outside of liquid level meter 304 is provided with liquid level transmitter 307, the right side of bottom disc 303 is provided with liquid discharge solenoid valve 308, second screw groove 301 is embedded in the upper surface of gas-liquid separation tank 1, second screw pipe 302 can be rotated in the inside of second screw groove 301, bottom disc 303 can be threadedly connected between the bottom of gas-liquid separation tank 1 by second screw pipe 302, it is convenient to dismount, liquid level meter 304 is mainly used for on-site observation, provides intuitive liquid level display, the upper surface of liquid discharge pipe 305 is vertically connected to the lower surface middle portion of bottom disc 303, manual liquid discharge valve 306 can be controlled by manual operation to open and close valve, liquid in the inside of gas-liquid separation tank 1 is discharged outward by liquid discharge pipe 305 and manual liquid discharge valve 306, liquid level transmitter 307 is responsible for converting liquid level signal into proportional electronic signal output, to be transmitted to control system at long distance, liquid discharge solenoid valve 308 operates valve core by the magnetic field generated by energizing electromagnetic coil, to open or close fluid passage, when electric current passes through electromagnetic coil, magnetic force is generated to pull or push valve core, changes its position to open or close valve, by the controller of outside control, liquid discharge is controlled when high liquid level in gas-liquid separation tank 1, liquid discharge solenoid valve 308 is closed when low liquid level, by the cumulative statistics of liquid discharge frequency in period, the liquid discharge volume is calculated, to achieve the purpose of metering liquid volume, to master the water yield of each well.

[0023] Specifically, as shown in Figure 1 The outer surface middle portion of gas-liquid separation tank 1 is fixedly connected with a plurality of support legs 101, the bottom of support leg 101 is fixedly connected with rubber pad 102, the front middle portion of gas-liquid separation tank 1 is fixedly connected with gas inlet pipe 103.

[0024] Through the above technical scheme, one end of three support legs 101 is evenly vertically connected to the outer surface middle portion of gas-liquid separation tank 1, gas-liquid separation tank 1 is supported up, rubber pad 102 can improve the stability when supporting support leg 101, natural gas enters the inside of gas-liquid separation tank 1 through gas inlet pipe 103.

[0025] Specifically, as shown in Figure 2As shown, the gas outlet mechanism 2 comprises a first threaded groove 201, which is arranged on the upper surface of the gas-liquid separation tank 1, a first threaded pipe 202 arranged above the first threaded groove 201, a cover disc 203 fixedly connected to the upper surface of the first threaded pipe 202, and a gas outlet pipe 204 fixedly connected to the upper surface of the cover disc 203.

[0026] Through the above technical scheme, the first threaded groove 201 is embedded on the upper surface of the gas-liquid separation tank 1, the first threaded pipe 202 can be screwed in the first threaded groove 201, the cover disc 203 can be threadedly connected with the gas-liquid separation tank 1 through the first threaded pipe 202 at the bottom, which is convenient for the operator to disassemble and assemble, and the gas in the gas-liquid separation tank 1 is discharged outward through the gas outlet pipe 204.

[0027] In use, the operator screws the first threaded pipe 202 in the first threaded groove 201, covers the cover disc 203 on the upper surface of the gas-liquid separation tank 1, covers the second threaded pipe 302 in the second threaded groove 301, and seals the bottom of the gas-liquid separation tank 1, connects the natural gas pipeline with the gas inlet pipe 103, and separates the gas and liquid from the mixture in the gas-liquid separation tank 1, discharges the liquid when the liquid level in the gas-liquid separation tank 1 is high, and closes the liquid discharge electromagnetic valve 308 when the liquid level is low, so that the liquid discharge amount can be calculated by counting the number of discharges in a period.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A natural gas wellhead liquid discharge metering device comprising a gas-liquid separation tank (1), characterized in that: The upper part of the gas-liquid separation tank (1) is provided with a gas outlet mechanism (2), and the lower part of the gas-liquid separation tank (1) is provided with a metering mechanism (3), the metering mechanism (3) comprises a second screw groove (301), the second screw groove (301) is arranged on the lower surface of the gas-liquid separation tank (1), the lower part of the second screw groove (301) is provided with a second screw pipe (302), the bottom of the second screw pipe (302) is fixedly connected with a bottom disc (303), the front lower middle part of the gas-liquid separation tank (1) is provided with a liquid level meter (304), the lower surface of the bottom disc (303) is fixedly connected with a liquid discharge pipe (305), the bottom of the liquid discharge pipe (305) is fixedly connected with a manual liquid discharge valve (306), the right side of the liquid level meter (304) is provided with a liquid level transmitter (307), and the right middle part of the bottom disc (303) is provided with a liquid discharge electromagnetic valve (308).

2. A natural gas wellhead liquid loading metering device according to claim 1, wherein: The outer surface of the gas-liquid separation tank (1) is fixedly connected with a plurality of supporting legs (101), and the bottom of the supporting leg (101) is fixedly connected with a rubber pad (102).

3. A natural gas wellhead liquid loading metering device according to claim 1, wherein: The front middle part of the gas-liquid separation tank (1) is fixedly connected with an air inlet pipe (103).

4. The natural gas wellhead liquid loading metering device of claim 1, wherein: The gas outlet mechanism (2) comprises a first screw groove (201), and the first screw groove (201) is arranged on the upper surface of the gas-liquid separation tank (1).

5. A natural gas wellhead liquid loading metering device according to claim 4, wherein: The upper part of the first screw groove (201) is provided with a first screw pipe (202), and the upper surface of the first screw pipe (202) is fixedly connected with a cover disc (203).

6. A natural gas wellhead liquid loading metering device according to claim 5, wherein: The upper surface of the cover disc (203) is fixedly connected with an air outlet pipe (204).

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