Gas extraction device capable of impurity separation

Abstract

The application discloses a gas extraction device capable of separating impurities and relates to the technical field of gas extraction. The gas extraction device capable of separating impurities comprises an extraction cylinder body fixed on an extraction well, a connecting cover plate fixed on the upper end face of the extraction cylinder body and connected with an external storage device, a drainage port and an extraction port arranged on the bottom of the extraction cylinder body, a separation bin slidably arranged in the extraction cylinder body, and a separation assembly fixed in the separation bin and used for preliminarily separating gas.

Description

Technical Field

[0001] This invention relates to the field of gas extraction technology, specifically a gas extraction device capable of separating impurities. Background Technology

[0002] When extracting gas, extraction devices need to be installed on the borehole for extraction. However, existing gas extraction devices can only extract gas and separate coal slag impurities, which is a single function. After extraction, a water-gas separator is needed to separate the water in the gas. The principle is that the gas impacts the separation plate, thereby achieving the separation purpose by the gas density being less than that of water. However, its separation effect is generally poor, resulting in excessive water in the gas, which affects its use.

[0003] To address the above problems, this invention provides a gas extraction device capable of separating impurities, thereby solving the aforementioned issues. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a gas extraction device capable of separating impurities, comprising an extraction cylinder fixed on an extraction well;

[0005] A connecting cover plate is fixed to the upper end face of the extraction cylinder and connected to an external storage device;

[0006] The drain outlet and the extraction outlet are located at the bottom of the extraction cylinder;

[0007] The separation chamber is slidably disposed inside the extraction cylinder; and

[0008] The separation assembly, fixed inside the separation chamber, is used for the initial separation of gas.

[0009] Furthermore, preferably, a reciprocating spring is provided between the upper and lower end faces of the separation chamber and the extraction cylinder. Multiple outlets are provided on the side wall of the separation chamber near the top. Multiple outlets are provided on both the upper and lower end faces of the separation chamber. The outlets at the top and the first outlet are used to discharge gas, and the outlets at the bottom are used to discharge the separated water.

[0010] Further, preferably, the separation component includes:

[0011] The air inlet is fixed to the extraction port and located inside the separation chamber;

[0012] A fixed shaft is coaxially fixed inside the separation chamber; and

[0013] Multiple separation discs are equidistantly arranged and slidably mounted on the fixed shaft. They reciprocate through an oscillating spring sleeved on the fixed shaft, and a guide surface is provided at the bottom of each separation disc.

[0014] Furthermore, preferably, the air inlet is funnel-shaped, the separation plate has multiple separation ports, and the separation ports on adjacent separation plates are staggered. The top of the separation plate has a guide surface inclined towards the fixed axis, and the separation plate has a water outlet near the fixed axis.

[0015] Furthermore, preferably, the air inlet is annular, the separation discs decrease in size from top to bottom, and an annular tube is fixed inside the separation chamber corresponding to the separation discs.

[0016] Furthermore, preferably, the oscillation amplitude of the oscillating springs on the plurality of separation discs increases sequentially from top to bottom.

[0017] Furthermore, preferably, a separation space is provided between the plurality of annular tubes, and the height of the plurality of annular tubes increases sequentially from the outer wall of the fixed axial separation chamber, and the outer walls of the plurality of separation discs are all located above the separation space.

[0018] Compared with the prior art, the present invention provides a gas extraction device capable of separating impurities, which has the following beneficial effects:

[0019] In this invention, the separation component can make oscillating contact with the extracted gas through the internal separation disc, thereby achieving multiple contacts with the gas, improving the degree of water-gas separation, and performing preliminary separation of gas and water. When the gas enters the extraction cylinder and the separation chamber after preliminary separation, the separation chamber reciprocates due to the oscillation of the internal separation disc, thereby making contact with the gas again and performing secondary separation, further improving the degree of gas-water separation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an overall gas extraction device capable of separating impurities.

[0021] Figure 2 Schematic diagram of a separation component in a gas extraction device capable of separating impurities. Figure 1 ;

[0022] Figure 3 Schematic diagram of a separation component in a gas extraction device capable of separating impurities. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of gas flow in a gas extraction device capable of separating impurities.

[0024] In the diagram: 1. Connecting cover plate; 2. Extraction cylinder; 3. Drain outlet; 4. Extraction port; 5. Separation chamber; 6. Separation assembly; 51. Reciprocating spring; 52. Discharge port one; 53. Discharge port two; 61. Air inlet; 62. Fixed shaft; 63. Separation disc; 631. Guide surface; 632. Water outlet; 64. Separation port; 65. Vibrating spring; 67. Annular pipe; 68. Separation space. Detailed Implementation

[0025] Example 1: Refer to Figures 1-2 The present invention provides a technical solution: a gas extraction device capable of separating impurities, comprising:

[0026] Extraction cylinder 2 is fixed on the extraction well;

[0027] The connecting cover plate 1 is fixed to the upper end face of the extraction cylinder 2 and connected to an external storage device;

[0028] Drainage outlet 3 and extraction outlet 4 are located at the bottom of the extraction cylinder 2;

[0029] Separation chamber 5 is slidably disposed inside the extraction cylinder 2; and

[0030] Separation component 6 is fixed inside the separation chamber 5 and is used for preliminary separation of gas.

[0031] In this embodiment, a reciprocating spring 51 is provided between the upper and lower end faces of the separation chamber 5 and the extraction cylinder 2. Multiple discharge ports 1 52 are provided on the side wall of the separation chamber 5 near the top. Multiple discharge ports 2 53 are provided on both the upper and lower end faces of the separation chamber 5. The discharge ports 2 53 and discharge ports 1 52 at the top are used to discharge gas, and the discharge ports 2 53 at the bottom are used to discharge the separated water.

[0032] It should be noted that the separation chamber 5 can oscillate up and down by the reciprocating spring 51, thereby increasing the number of times it comes into contact with the gas. The gas discharged through the outlet 2 52 can directly contact the inner wall of the extraction cylinder 2, further improving the degree of separation. In other words, because the density of gas is less than that of water, when gas carries water and flows, it will collide with external objects, causing the gas and water to lose their tendency to flow towards the outlet. At this time, the water flows downward due to gravity, offsetting the extraction force, while the gas continues to be extracted by the extraction force, thereby completing the water-gas separation.

[0033] In this embodiment, the separation component 6 includes:

[0034] The air inlet 61 is fixed on the extraction port 4 and located inside the separation chamber 5;

[0035] Fixed shaft 62, coaxially fixed inside the separation chamber 5; and

[0036] Multiple separation discs 63 are equidistantly arranged and slidably mounted on the fixed shaft 62. They reciprocate through an oscillating spring 65 sleeved on the fixed shaft 62. A guide surface 631 is provided at the bottom of each separation disc 63.

[0037] In other words, when gas carrying moisture impacts the separation disc 63, the moisture is guided by the guide surface 631, thus creating a tendency to flow towards the fixed shaft 62, thereby discharging the moisture.

[0038] In a preferred embodiment, the air inlet 61 is funnel-shaped, the separation disk 63 has multiple separation ports 64, and the separation ports 64 on adjacent separation disks 63 are staggered. The top of the separation disk 63 has a guide surface that is inclined towards the fixed shaft 62, and the separation disk 63 has a water outlet 632 near the fixed shaft 62.

[0039] In other words, the staggered arrangement of the separation ports 64 can prevent gas from flowing out directly from the separation ports 64, thereby causing the gas to collide and contact with each separation plate 63, thus improving the degree of separation.

[0040] It should be noted that the moisture content in the gas must be tested before gas extraction. When the moisture content is low, this embodiment can improve water-gas separation while ensuring the overall gas flow rate and improving gas extraction efficiency.

[0041] Example 2: As Figure 1 , Figure 3 The difference from Embodiment 1 is that the air inlet 61 is annular, the separation disk 63 decreases in size from top to bottom, and the interior of the separation chamber 5 is fixed with an annular tube 67 corresponding to the separation disk 63.

[0042] In this embodiment, the oscillation amplitude of the oscillation springs 65 on the plurality of separation discs 63 increases sequentially from top to bottom.

[0043] In other words, by setting the separation disc 63 to decrease from top to bottom and the oscillation amplitude of the oscillation spring 65 to increase from top to bottom, the water-gas separation of gas can be carried out in stages, thereby greatly improving the degree of water-gas separation.

[0044] In a preferred embodiment, a separation space 68 is provided between the plurality of annular tubes 67, and the height of the plurality of annular tubes 67 increases sequentially from the fixed shaft 62 toward the outer wall of the separation chamber 5, and the outer walls of the plurality of separation discs 63 are all located above the separation space 68.

[0045] It should be noted that when the moisture content in the gas is too high, this embodiment can significantly improve the degree of water-gas separation, but the gas extraction flow rate is less than that of Embodiment 1. Therefore, when extracting coal seams with high gas extraction flow rate and low gas moisture content, Embodiment 1 can not only improve water-gas separation but also ensure the overall gas flow rate. When extracting coal seams with low gas extraction flow rate and high gas moisture content, Embodiment 2 can significantly improve the degree of water-gas separation.

[0046] Specifically, the separation component can make oscillating contact with the extracted gas through the internal separation disc, thereby achieving multiple contacts with the gas, improving the degree of water-gas separation, and performing preliminary separation of gas and water. When the gas enters the extraction cylinder and the separation chamber after preliminary separation, the separation chamber reciprocates due to the oscillation of the internal separation disc, thereby making contact with the gas again and performing secondary separation, further improving the degree of gas-water separation.

[0047] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gas extraction device capable of separating impurities, characterized in that: include: The extraction cylinder (2) is fixed on the extraction well; The connecting cover plate (1) is fixed to the upper end face of the extraction cylinder (2) and connected to the external storage device; Drainage outlet (3) and extraction outlet (4) are located at the bottom of the extraction cylinder (2); The separation chamber (5) is slidably disposed inside the extraction cylinder (2); as well as Separation component (6) is fixed inside the separation chamber (5) for preliminary separation of gas; The separation component (6) includes: The air inlet (61) is fixed on the extraction port (4) and located inside the separation chamber (5); A fixed shaft (62) is coaxially fixed inside the separation chamber (5); and The separation discs (63) are arranged in multiple equidistant positions and are all slidably disposed on the fixed shaft (62). They reciprocate through an oscillating spring (65) sleeved on the fixed shaft (62). The bottom of the separation discs (63) is provided with a guide surface (631). The air inlet (61) is annular, the separation disc (63) decreases in size from top to bottom, and the interior of the separation chamber (5) is fixed with an annular tube (67) corresponding to the separation disc (63); A separation space (68) is provided between the plurality of annular tubes (67), and the height of the plurality of annular tubes (67) increases sequentially from the fixed shaft (62) toward the outer wall of the separation chamber (5), and the outer walls of the plurality of separation discs (63) are all located above the separation space (68).

2. The gas extraction device capable of separating impurities according to claim 1, characterized in that: A reciprocating spring (51) is provided between the upper and lower end faces of the separation chamber (5) and the extraction cylinder (2). Multiple outlets (52) are provided on the side wall near the top of the separation chamber (5). Multiple outlets (53) are provided on both the upper and lower end faces of the separation chamber (5). The outlets (53) and (52) at the top are used to discharge gas, and the outlets (53) at the bottom are used to discharge the separated water.

3. The gas extraction device capable of separating impurities according to claim 1, characterized in that: The air inlet (61) is funnel-shaped, and the separation plate (63) has multiple separation ports (64), and the separation ports (64) on adjacent separation plates (63) are arranged in an alternating manner. The top of the separation plate (63) has a guide surface that is inclined towards the fixed shaft (62), and the separation plate (63) has a water outlet (632) near the fixed shaft (62).

4. The gas extraction device capable of separating impurities according to claim 1, characterized in that: The oscillation amplitude of the oscillating springs (65) on the multiple separation discs (63) increases sequentially from top to bottom.

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