Gas-liquid separation device for water-containing natural gas

Abstract

The utility model relates to a water-containing natural gas gas-liquid separation device which comprises a gas-liquid separator and a main conveying pipe, the main conveying pipe is located below the gas-liquid separator, a water-containing natural gas inlet is formed in the middle of the side wall of the gas-liquid separator, a dry natural gas outlet is formed in the top of the gas-liquid separator, and a liquid outlet is formed in the bottom of the gas-liquid separator. A branch conveying pipe communicated with the water-containing natural gas inlet is installed on the upstream of the main conveying pipe, and a liquid discharging pipe communicated with the liquid outlet is installed on the downstream of the main conveying pipe. The gas-liquid separation device has the beneficial effects that the main conveying pipe, the branch conveying pipes, the liquid discharging pipe and the gas-liquid separator are communicated and matched, so that the gas-liquid separation device performs gas-liquid separation under the same pressure condition, a valve and control equipment are not needed, the structure is simple, and dry natural gas can be conveniently obtained in a natural gas extraction site for power generation.

Description

Technical Field

[0001] The utility model relates to the field of natural gas drying equipment, in particular to a gas-liquid separation device for water-containing natural gas. Background Art

[0002] In the gas field, a gas-liquid dual-chamber mixed transmission device is used to drain gas from gas wells. There is no power supply on site, so a natural gas generator is required. The gas source of the natural gas generator needs to be dry to a certain extent. The gas produced from the wellhead of the gas well is all water-containing natural gas, which needs to be dried through a separation device. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a gas-liquid separation device for natural gas containing water.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A gas-liquid separation device for natural gas containing water comprises a gas-liquid separator and a main delivery pipe, wherein the main delivery pipe is located below the gas-liquid separator, a water-containing natural gas inlet is arranged in the middle of the side wall of the gas-liquid separator, a dry natural gas outlet is arranged at the top of the gas-liquid separator, a liquid outlet is arranged at the bottom of the gas-liquid separator, a branch delivery pipe connected to the water-containing natural gas inlet is installed upstream of the main delivery pipe, and a drain pipe connected to the liquid outlet is installed downstream of the main delivery pipe.

[0006] Among them, the gas-liquid separator includes a vertical tank body with a circular cross-section, a circular guide ring, an umbrella-shaped first guide cover, and multiple wave-shaped guide plates. The guide ring is welded to the inner upper part of the vertical tank body, the guide plate is welded to the top of the guide ring, the first guide cover is welded to the top of the guide plate, and multiple guide plates are arranged in a circular array. The guide ring is provided with a plurality of drainage holes arranged in a circular array, and an umbrella-shaped second guide cover is arranged above each drainage hole, and the diameter of the second guide cover is larger than the diameter of the drainage hole. The bottom end of the second guide cover is provided with two symmetrical downward extending support blocks, and the bottom end of the support block is welded to the guide ring.

[0007] The cross section of the guide ring is in the shape of a letter "√", a circle of annular guide grooves is arranged on the guide ring, and the drainage hole is located at the bottom of the guide groove.

[0008] The diameter of the first air guide cover is larger than the inner diameter of the air guide ring, and the diameter of the first air guide cover is smaller than the distance between the drainage hole and the center of the air guide ring.

[0009] A safety valve interface is also provided on the side wall of the vertical tank body, and the safety valve interface is located above the guide ring. A safety valve is installed on the safety valve interface to ensure that the air pressure in the vertical tank body is within the pressure limit of the vertical tank body.

[0010] Wherein, a transparent observation window for observing the liquid level height inside the vertical tank body is also arranged on the side wall of the vertical tank body, and the transparent observation window is located below the guide ring.

[0011] The beneficial effects of the utility model are as follows: the water-containing natural gas is fed into the main transmission pipe from the upstream of the main transmission pipe, a part of the water-containing natural gas enters the gas-liquid separator through the branch transmission pipe, and after separation by the gas-liquid separator, the natural gas is discharged from the dry natural gas outlet and transported to the gas generator through the pipeline for combustion and power generation, and the water is discharged back to the main transmission pipe from the drain pipe after confluence; the other part of the water-containing natural gas is directly output through the main transmission pipe to the subsequent natural gas production equipment. The main transmission pipe, the branch transmission pipe, the drain pipe and the gas-liquid separator are connected and coordinated, so that the gas-liquid separation device is under the same pressure condition for gas-liquid separation, and valves and control equipment are not required. The structure is simple, which is convenient for obtaining dry natural gas on-site at the natural gas production site for power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 It is a structural schematic diagram of the gas-liquid separation device in the utility model;

[0014] Figure 2 It is a structural schematic diagram of the combination of the guide ring, the first guide cover, the guide plate and the second guide cover in the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the guide ring, the first guide cover, the guide plate and the second guide cover in the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the guide ring after longitudinal cutting in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the second air guide cover in the utility model;

[0018] Explanation of the numbers in the figure: gas-liquid separator 1, main delivery pipe 2, water-containing natural gas inlet 3, dry natural gas outlet 4, liquid outlet 5, branch delivery pipe 6, drain pipe 7, vertical tank body 8, guide ring 9, first guide cover 10, guide plate 11, drain hole 12, second guide cover 13, support block 14, guide groove 15, safety valve interface 16, safety valve 17, transparent observation window 18. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0020] like Figures 1 to 5 As shown, a gas-liquid separation device for water-containing natural gas comprises a gas-liquid separator 1 and a main delivery pipe 2. The main delivery pipe 2 is located below the gas-liquid separator 1. A water-containing natural gas inlet 3 is arranged in the middle of the side wall of the gas-liquid separator 1. A dry natural gas outlet 4 is arranged at the top of the gas-liquid separator 1. A liquid outlet 5 is arranged at the bottom of the gas-liquid separator 1. A branch delivery pipe 6 connected to the water-containing natural gas inlet 3 is installed upstream of the main delivery pipe 2. A liquid discharge pipe 7 connected to the liquid outlet 5 is installed downstream of the main delivery pipe 2.

[0021] The gas-liquid separator 1 includes a vertical tank body 8 with a circular cross-section, a circular guide ring 9, an umbrella-shaped first guide cover 10, and multiple wave-shaped guide plates 11. The cross-section of the guide ring 9 is in the shape of a "√". A circle of circular guide grooves 15 is arranged on the guide ring 9. The guide ring 9 is welded to the inner upper part of the vertical tank body 8, the guide plate 11 is welded to the top of the guide ring 9, and the first guide cover 10 is welded to the top of the guide plate 11. The multiple guide plates 11 are arranged in a circular array. The guide ring 9 is provided with a plurality of drainage holes 12 arranged in a circular array, and the drainage holes 12 are located at the bottom of the guide groove 15.

[0022] The diameter of the first guide cover 10 is larger than the inner diameter of the guide ring 9, and the diameter of the first guide cover 10 is smaller than the distance between the drainage hole 12 and the center of the guide ring 9, ensuring that the rising gas passes through the gap between the first guide cover 10, the guide ring 9 and the guide plate 10, increasing the movement path of the gas, which is beneficial to improving the reliability of gas-liquid separation.

[0023] An umbrella-shaped second air guide cover 13 is arranged above each drainage hole 12, and the diameter of the second air guide cover is larger than the diameter of the drainage hole 12. Two symmetrical support blocks 14 extending downward are arranged at the bottom end of the second air guide cover 13. The bottom ends of the support blocks 14 are welded to the guide ring 9. The second air guide cover 13 prevents the gas from passing through the drainage hole 12 and directly reaching the top of the guide ring 9.

[0024] A safety valve interface 16 is also provided on the side wall of the vertical tank body 8, and the safety valve interface 16 is located above the guide ring 9. A safety valve 17 is installed on the safety valve interface 16 to ensure that the air pressure in the vertical tank body 8 is within the pressure limit value of the vertical tank body 8.

[0025] A transparent observation window 18 for observing the liquid level inside the vertical tank body 8 is also provided on the side wall of the vertical tank body 8, and the transparent observation window 18 is located below the guide ring 9. The liquid level inside the vertical tank body 8 is observed through the transparent observation window 18 to avoid blockage of the main delivery pipe 2 or the discharge pipe causing the liquid level in the vertical tank body to exceed the guide ring.

[0026] The water-containing natural gas is delivered into the main transmission pipeline from the upstream of the main transmission pipeline. A part of the water-containing natural gas enters the gas-liquid separator through the branch transmission pipe. After separation in the gas-liquid separator, the natural gas is discharged from the dry natural gas outlet and transported to the gas generator through the pipeline for combustion and power generation. After the water converges, it is discharged back to the main transmission pipeline from the drain pipe; the other part of the water-containing natural gas is directly output through the main transmission pipeline to the subsequent natural gas extraction and production equipment.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A gas-liquid separation device for natural gas containing water, characterized in that: The invention comprises a gas-liquid separator and a main delivery pipe, wherein the main delivery pipe is located below the gas-liquid separator, a water-containing natural gas inlet is arranged in the middle of the side wall of the gas-liquid separator, a dry natural gas outlet is arranged at the top of the gas-liquid separator, a liquid outlet is arranged at the bottom of the gas-liquid separator, a branch delivery pipe connected with the water-containing natural gas inlet is installed upstream of the main delivery pipe, and a drain pipe connected with the liquid outlet is installed downstream of the main delivery pipe.

2. The gas-liquid separation device for natural gas containing water according to claim 1, characterized in that: The gas-liquid separator includes a vertical tank body with a circular cross-section, a circular guide ring, an umbrella-shaped first guide cover, and multiple wave-shaped guide plates. The guide ring is welded to the inner upper part of the vertical tank body, the guide plate is welded to the top of the guide ring, the first guide cover is welded to the top of the guide plate, and the multiple guide plates are arranged in a circular array. The guide ring is provided with a plurality of drainage holes arranged in a circular array, and an umbrella-shaped second guide cover is arranged above each drainage hole, and the diameter of the second guide cover is larger than the diameter of the drainage hole. The bottom end of the second guide cover is provided with two symmetrical downwardly extending support blocks, and the bottom end of the support block is welded to the guide ring.

3. The gas-liquid separation device for natural gas containing water according to claim 2, characterized in that: The cross section of the guide ring is in the shape of a "√"; a circle of annular guide grooves is arranged on the guide ring; and the drainage hole is located at the bottom of the guide groove.

4. The gas-liquid separation device for water-containing natural gas according to claim 2, characterized in that: The diameter of the first air guide cover is larger than the inner diameter of the air guide ring, and the diameter of the first air guide cover is smaller than the distance between the drainage hole and the center of the air guide ring.

5. The gas-liquid separation device for water-containing natural gas according to claim 2, characterized in that: A safety valve interface is also provided on the side wall of the vertical tank body, and the safety valve interface is located above the guide ring. A safety valve is installed on the safety valve interface to ensure that the air pressure in the vertical tank body is within the pressure limit value of the vertical tank body.

6. The gas-liquid separation device for natural gas containing water according to claim 2, characterized in that: A transparent observation window for observing the height of the liquid level inside the vertical tank body is also arranged on the side wall of the vertical tank body, and the transparent observation window is located below the guide ring.

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