Natural gas well desanding device

Abstract

The utility model belongs to the technical field of natural gas treatment, and particularly relates to a natural gas well desanding device which comprises a support, two tank bodies are fixed on the support, the two tank bodies are communicated and fixed through a communicating pipe, a first filter screen is fixed inside the left tank body, and a second filter screen is fixed inside the right tank body. By arranging the support, the tank body, the communicating pipe, the first filter screen, the second filter screen, the T-shaped rod, the cam mechanism, the U-shaped rod, the spring, the receiving hopper and the connecting pipe assembly, in the using process of the natural gas well sand removing device, natural gas can be doubly filtered through the first filter screen and the second filter screen, so that sand in the natural gas well can be removed more thoroughly, and the sand removing efficiency is improved. Under the cooperation of a cam mechanism and a spring, a T-shaped rod can reciprocate to drive a U-shaped rod to vibrate and knock a filter screen I and a filter screen II in a reciprocating manner, so that sand grains can be prevented from being adhered to the surface of the filter screen to block filter screen holes in the sand removal process, and the filter screen holes do not need to be detached for cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas raw gas processing, in particular to a natural gas well desanding device. Background Art

[0002] Natural gas is an important combustible gas and clean energy source stored in the formation. In current natural gas production, due to process requirements, a large amount of fracturing sand must be injected into the well before production to fracture the gas well. However, during natural gas extraction, the raw gas directly extracted from the gas well often contains a small amount of sand particles. If these sand particles are not removed, the service life of the gas transmission system will be seriously affected. Therefore, a desander is needed for desandering. However, when the current desander is used, after it has worked for a period of time, the accumulated sand particles will adhere to the surface of its filter and clog the filter holes. The previous cleaning method is to disassemble the filter for cleaning, which is time-consuming and labor-intensive. Therefore, we proposed a natural gas well desander to solve the above problem. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the present invention provides a natural gas well desanding device, which solves the problems raised in the above-mentioned background technology.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A natural gas well desanding device includes a bracket, on which two tank bodies are fixed, and the two tank bodies are connected and fixed by a connecting pipe. A filter screen 1 is fixed inside the left tank body, and a filter screen 2 is fixed inside the right tank body. The outer walls of the tank bodies are slidably penetrated by T-shaped rods, and a cam mechanism for driving the two T-shaped rods to move is provided above the bracket. The bottom ends of the T-shaped rods extend to the interior of the tank bodies and are fixed with U-shaped rods. The tops of the U-shaped rods are fixed with springs, and the tops of the springs are fixedly connected to the inner walls of the corresponding tank bodies. A receiving bucket is connected and fixed on the tank bodies, and a sealing cover is threadedly connected to the discharge pipe of the receiving bucket. A connecting pipe assembly is provided at one end of the tank body.

[0008] Furthermore, the cam mechanism includes support seats respectively fixed on the top of the tank body, and both support seats are rotatably connected to a rotating shaft through bearings. The surface of the rotating shaft is fixed with a rotating cam for driving the T-shaped rod to move, and the surface of the rotating shaft is fixed with a transmission wheel, and the two transmission wheels are connected by a belt drive.

[0009] Further, the connecting pipe assembly includes a first pipe communicatively fixed to one end of the tank body. One end of the first pipe is inserted with a second pipe adapted to it. Limiting rings are fixedly arranged on the surfaces of the first pipe and the second pipe. A first fixing frame and a second fixing frame for cooperative use are clamped on the surfaces of the two limiting rings. The first fixing frame and the second fixing frame are fixedly connected by bolts.

[0010] Further, a sealing ring is fixedly arranged inside the first pipe, and the inner surface of the sealing ring is closely attached to one end of the second pipe.

[0011] Further, limiting frames are fixedly arranged at the openings formed on the front surface of the receiving hopper, and transparent plates are fixedly arranged inside the limiting frames.

[0012] Further, anti-slip convex strips are fixedly arranged on the surface of the sealing cover in an annular array.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a sand removal device for natural gas wells, which has the following beneficial effects:

[0015] In the utility model, by arranging a bracket, a tank body, a communicating pipe, a first filter screen, a second filter screen, a T-shaped rod, a cam mechanism, a U-shaped rod, a spring, a receiving hopper and a connecting pipe assembly, during the use of this sand removal device for natural gas wells, the natural gas can be double-filtered through the arranged first filter screen and second filter screen, so as to make the sand grains inside it removed more thoroughly. Under the cooperation of the cam mechanism and the spring, the T-shaped rod can reciprocate to drive the U-shaped rod to reciprocally vibrate and strike the first filter screen and the second filter screen, so that during the sand removal process, it can be avoided that sand grains adhere to the surface and block the filter holes, and it is not necessary to disassemble and clean them. Through the arranged connecting pipe assembly, it will be more convenient to operate when connecting and fixing the tank body with the natural gas pipeline. Description of the drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a sectional view of the tank body structure of the utility model;

[0018] Figure 3 is a schematic diagram of the structural connection between the first pipe and the second pipe of the utility model;

[0019] Figure 4 is a schematic diagram of the structures of the first fixing frame and the second fixing frame of the utility model.

[0020] In the figure: 1, support; 2, tank body; 3, connecting pipe; 4, first filter screen; 5, second filter screen; 6, T-shaped rod; 7, cam mechanism; 701, support seat; 702, rotating shaft; 703, rotating cam; 704, transmission wheel; 705, belt; 8, U-shaped rod; 9, spring; 10, receiving hopper; 11, sealing cover; 12, connecting pipe assembly; 1201, first pipe; 1202, second pipe; 1203, limiting ring; 1204, first fixing frame; 1205, second fixing frame; 1206, sealing ring; 13, limiting frame; 14, transparent plate. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment

[0023] Such as Figure 1 And Figure 2As shown in the figure, a sand removal device for a natural gas well proposed by an embodiment of the present utility model includes a bracket 1, on which two tanks 2 are fixedly installed. The two tanks 2 are connected and fixed through a connecting pipe 3. Inside the left tank 2, a first filter screen 4 is fixedly installed, and inside the right tank 2, a second filter screen 5 is fixedly installed. The outer walls of the tanks 2 are all slidably penetrated by T-shaped rods 6. Above the bracket 1, a cam mechanism 7 is provided for driving the two T-shaped rods 6 to move. The bottom ends of the T-shaped rods 6 respectively extend into the tanks 2 and are fixed with U-shaped rods 8. At the tops of the U-shaped rods 8, springs 9 are fixedly installed, and the top ends of the springs 9 are respectively fixedly connected to the inner walls of the corresponding tanks 2. On each tank 2, a receiving hopper 10 is connected and fixed. At the openings formed on the fronts of the receiving hoppers 10, limiting frames 13 are fixedly installed, and inside the limiting frames 13, transparent plates 14 are fixedly installed, which facilitates the staff to view the situation inside the receiving hoppers 10 from the outside, so as to timely discharge the filtered and collected sand. At the discharge pipes of the receiving hoppers 10, sealing caps 11 are threadedly connected. On the surfaces of the sealing caps 11, anti-slip ridges are fixedly installed in a circumferential array, which can increase the friction between the hand and the surface of the sealing cap 11, thus making it more convenient to operate when rotating the sealing cap 11. At one end of each tank 2, a connecting pipe assembly 12 is provided. When using this natural gas sand removal device, after installing it in a suitable position, the conveying pipe of the natural gas can be connected and fixed to the left tank 2. When the natural gas containing sand grains enters the inside of the left tank 2, the first filter screen 4 provided inside can be used to filter it once. Then, the natural gas after the first filtration will flow into the inside of the right tank 2 through the connecting pipe 3. Then, the second filter screen 5 inside can be used to filter the natural gas again, so that the sand grains inside the natural gas can be removed more thoroughly. And during the sand removal process, starting the cam mechanism 7 can drive the two T-shaped rods 6 to move. With the cooperation of the springs 9, the T-shaped rods 6 can drive the U-shaped rods 8 to reciprocate. Finally, the reciprocating U-shaped rods 8 can vibrate and knock the first filter screen 4 and the second filter screen 5, so as to clean the sand grains adhered to the surfaces of the first filter screen 4 and the second filter screen 5.

[0024] As Figure 1 and Figure 2As shown, in some embodiments, the cam mechanism 7 includes support bases 701 respectively fixed on the top of the tank body 2, and the two support bases 701 are rotatably connected to the rotating shaft 702 through bearings. The surface of the rotating shaft 702 is fixed with a rotating cam 703 for driving the T-bar 6 to move, and the surface of the rotating shaft 702 is fixed with a transmission wheel 704. The two transmission wheels 704 are connected by a belt 705. When in use, the rotating shaft 702 is driven to rotate by starting the motor, and the rotating cam 703 is driven to rotate after the rotating shaft 702 rotates. Therefore, when the rotating cam 703 rotates, the T-bar 6 can be driven to move. With the cooperation of the transmission wheel 704 and the belt 705, the two rotating shafts 702 can be driven to rotate at the same time with the cooperation of one motor, thereby saving production costs.

[0025] like Figure 1 、 Figure 3 and Figure 4 As shown, in some embodiments, the connecting pipe assembly 12 includes a pipe 1201 connected and fixed to one end of the tank body 2, one end of the pipe 1201 is plugged with a pipe 2 1202 that matches it, and a sealing ring 1206 is fixed inside the pipe 1201. The inner surface of the sealing ring 1206 fits tightly with one end of the pipe 2 1202, which can enhance the tightness of the pipe 1 1201 and the pipe 2 1202 after plugging, and avoid the leakage of the transported gas from here. The surfaces of the pipe 1 1201 and the pipe 2 1202 are fixed with limiting rings 1203, and the surfaces of the two limiting rings 1203 are clamped with each other. The fixing frame 1 1204 and the fixing frame 2 1205 are used together, and the fixing frame 1 1204 and the fixing frame 2 1205 are fixedly connected by bolts. When in use, the pipe 1 1201 can be connected and fixed to one end of the tank body 2, and the pipe 2 1202 can be connected and fixed to one end of the natural gas transmission pipe. When the two are plugged in, the fixing frame 1 1204 and the fixing frame 2 1205 can be clamped on the surface of the two limit rings 1203, and finally the fixing frame 1 1204 and the fixing frame 2 1205 that are clamped with each other can be fixed by bolts, so that there is no need to use flanges for connection when connecting the pipe 1201 and the pipe 2 1202.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. Gas well sand removal device, including a bracket (1), characterized in that: Two tanks (2) are fixed on the bracket (1). The two tanks (2) are connected and fixed through a connecting pipe (3). A first filter screen (4) is fixed inside the left tank (2), and a second filter screen (5) is fixed inside the right tank (2). The outer walls of the tanks (2) are all slidably penetrated by T-shaped rods (6). Above the bracket (1), a cam mechanism (7) is provided for driving the two T-shaped rods (6) to move. The bottom ends of the T-shaped rods (6) respectively extend into the tanks (2) and are fixed with U-shaped rods (8). Springs (9) are fixed on the tops of the U-shaped rods (8). The top ends of the springs (9) are respectively fixedly connected to the inner walls of the corresponding tanks (2). A receiving hopper (10) is connected and fixed to each of the tanks (2). A sealing cover (11) is screwed to the discharge pipe of each receiving hopper (10). A connecting pipe assembly (12) is provided at one end of each tank (2).

2. The sand removal device for natural gas wells according to claim 1, wherein: The cam mechanism (7) includes support seats (701) respectively fixed on the tops of the tanks (2). A rotating shaft (702) is rotatably connected to each of the two support seats (701) through a bearing. Rotating cams (703) for driving the T-shaped rods (6) to move are fixed on the surfaces of the rotating shafts (702). Transmission wheels (704) are fixed on the surfaces of the rotating shafts (702). The two transmission wheels (704) are connected by a belt (705).

3. The sand removal device for natural gas wells according to claim 2, characterized in that: The connecting pipe assembly (12) includes a first pipe (1201) connected and fixed to one end of the tank (2). One end of the first pipe (1201) is inserted with a second pipe (1202) adapted thereto. Limiting rings (1203) are fixed on the surfaces of the first pipe (1201) and the second pipe (1202). A first fixing frame (1204) and a second fixing frame (1205) which are used in cooperation are clamped on the surfaces of the two limiting rings (1203). The first fixing frame (1204) and the second fixing frame (1205) are fixedly connected by bolts.

4. The sand removal device for natural gas wells according to claim 3, wherein: A sealing ring (1206) is fixed inside the first pipe (1201). The inner surface of the sealing ring (1206) is in close contact with one end of the second pipe (1202).

5. The sand removal device for natural gas wells according to claim 1, wherein: Limiting frames (13) are fixed at the openings formed on the fronts of the receiving hoppers (10). Transparent plates (14) are fixed inside the limiting frames (13).

6. The sand removal device for natural gas wells according to claim 1, characterized in that: Anti-slip ridges are fixedly arranged on the surfaces of the sealing covers (11) in an annular array.

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