Dual-channel sand remover for natural gas exploitation

Abstract

The utility model discloses a two-channel desander for natural gas exploitation in the technical field of desanders, which comprises a first desander, a second desander, a flushing pipe, a sand discharge pipe, a gas inlet pipe and a gas outlet pipe, a first connecting pipe is arranged on the upper portion between the first desander and the second desander, and a second connecting pipe is arranged on the lower portion between the first desander and the second desander. A fixing ring is arranged on the lower portion of the inner wall of the sand discharging pipe, a blocking plate is arranged at the bottom in the sand discharging pipe, a positioning plate is arranged at the bottom of the blocking plate, a square block is arranged at the bottom of the positioning plate, and a positioning opening is formed in the lower portion of the side face of the sand discharging pipe. The first flat gate valve and the second flat gate valve, located on the same side face of the gas inlet pipe and the gas outlet pipe, of the first connecting pipe and the second connecting pipe are closed, natural gas can only enter one of the first sand remover and the second sand remover, the first sand remover or the second sand remover is cleaned, the sand removing work of the first sand remover or the second sand remover cannot be stopped, and the cleaning efficiency is improved. And it is guaranteed that sand removal work is conducted on natural gas all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of desanders, in particular to a double-channel desander for natural gas development. Background Art

[0002] After natural gas is mined, a desander is needed to filter the sand and gravel in the mined natural gas before the natural gas can be discharged to downstream equipment. For example, a desander disclosed in Chinese patent literature (patent number: CN201821053252.0) has a channel for natural gas filtering. The desander needs to be cleaned or the filter element needs to be replaced, and the desander needs to be stopped, so that the pressure of the natural gas entering the desander pipeline will continue to increase. Once the pressure exceeds the maximum bearing pressure of the pipeline entering the desander, it is easy to cause natural gas leakage. In addition, the sand outlet cover door is fixed with a tension spring, and the spring itself has poor stability. The cover door forms pressure on the sand storage tank and cannot stably seal the sand outlet, which is easy to cause natural gas leakage in the desander.

[0003] To this end, we propose a dual-channel desander for natural gas development. Utility Model Content

[0004] The utility model aims to provide a dual-channel desander for natural gas development to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-channel desander for natural gas development, comprising desander one, desander two, a flushing pipe, a sand discharge pipe, an air inlet pipe and an air outlet pipe, a first connecting pipe is arranged at the upper part between the desander one and the desander two, a second connecting pipe is arranged at the lower part between the desander one and the desander two, a fixing ring is arranged at the lower part of the inner wall of the sand discharge pipe, a sealing plate is arranged at the bottom of the inner bottom of the sand discharge pipe, a positioning plate is arranged at the bottom of the sealing plate, a square block is arranged at the bottom of the positioning plate, a positioning opening is arranged at the lower part of the side surface of the sand discharge pipe, an upper positioning block is arranged in the positioning opening, a lower positioning block is arranged on the right side of the positioning plate, clamping plates are arranged at both ends of the bottom of the positioning plate, a through hole is arranged on the lower positioning block, a bolt is arranged in the through hole, and a threaded hole is arranged at the bottom of the upper positioning block.

[0006] Preferably, the sand discharge pipe is provided with an internal thread on the inner wall surface at the bottom of the fixing ring, and an external thread is provided on the side of the sealing plate.

[0007] Preferably, the air intake pipe is connected to the upper part of the first connecting pipe, and the first connecting pipe is provided with first flat gate valves at both sides of the air intake pipe.

[0008] Preferably, the air outlet pipe is connected to the bottom of the second connecting pipe, and the second connecting pipe is provided with second flat gate valves at both sides of the air outlet pipe.

[0009] Preferably, a flushing pipe is provided on the upper left side of the desander 1 and the upper right side of the desander 2, and a flat gate valve is provided on the flushing pipe.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. Close the first flat gate valve and the second flat gate valve of the first connecting pipe and the second connecting pipe on the same side of the air inlet pipe and the air outlet pipe. Natural gas will only enter one of the desander 1 or the desander 2. Clean the other desander and replace the filter screen to clean the desander 1 or the desander 2, but the desandering work of the desander 1 or the desander 2 will not be stopped, so as to ensure that the natural gas is always desandered and improve the working efficiency of the desander.

[0012] 2. Bolts pass through the through holes and connect with the threaded holes, tighten the bolts, and the lower positioning block presses against the positioning plate set at the bottom of the plugging plate to strengthen and fix the plugging plate, so that the plugging plate is firmly fixed. After the plugging plate is installed, the top of the plugging plate presses against the fixing ring to further strengthen the sealing of the sand discharge pipe and avoid natural gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the sand discharge pipe of the utility model;

[0015] Figure 3 It is an enlarged view of point A of the present utility model.

[0016] In the figure: 1. Desander 1; 2. Desander 2; 3. Flushing pipe; 4. Sand discharge pipe; 5. Air inlet pipe; 6. Air outlet pipe; 7. First connecting pipe; 71. First flat gate valve; 8. Second connecting pipe; 81. Second flat gate valve; 9. Fixing ring; 10. Sealing plate; 11. Positioning plate; 12. Square block; 13. Positioning port; 14. Upper positioning block; 15. Lower positioning block; 16. Clamping plate; 17. Through hole; 18. Bolt; 19. Threaded hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3The utility model provides a technical solution: a dual-channel desander for natural gas development, including a desander 1, a desander 2, a flushing pipe 3, a sand discharge pipe 4, an air inlet pipe 5 and an air outlet pipe 6, a first connecting pipe 7 is arranged at the upper part between the desander 1 and the desander 2, a second connecting pipe 8 is arranged at the lower part between the desander 1 and the desander 2, a fixing ring 9 is arranged at the lower part of the inner wall of the sand discharge pipe 4, a sealing plate 10 is arranged at the bottom of the sand discharge pipe 4, a positioning plate 11 is arranged at the bottom of the sealing plate 10, a square block 12 is arranged at the bottom of the positioning plate 11, a positioning port 13 is arranged at the lower part of the side of the sand discharge pipe 4, and a positioning port 13 is arranged inside the positioning port 13 An upper positioning block 14 is arranged, a lower positioning block 15 is arranged on the right side of the positioning plate 11, and clamping plates 16 are arranged at both ends of the bottom of the positioning plate 11. A through hole 17 is arranged on the lower positioning block 15, and a bolt 18 is arranged in the through hole 17. A threaded hole 19 is arranged at the bottom of the upper positioning block 14. For the processing of the extracted natural gas, the natural gas enters the first connecting pipe 7 through the air inlet pipe 5, enters the desander 1 and the desander 2 through the first connecting pipe 7, and performs desanding on the natural gas. The desanded natural gas enters the outlet pipe 6 through the second connecting pipe 8 and flows to the downstream equipment. The first connecting pipe 7 and the second connecting pipe 8 are between the air inlet pipe 5 and The first flat gate valve 71 and the second flat gate valve 81 on the same side of the gas outlet pipe 6 are closed, and the natural gas will only enter one of the desander 1 or the desander 2. The other desander is cleaned and the filter screen is replaced to achieve cleaning of the desander 1 or the desander 2, but the desandering work of the desander 1 or the desander 2 will not be stopped, so as to ensure that the natural gas is always desanded and improve the working efficiency of the desander. When the sand is discharged through the sand discharge pipe 4, the bolt 18 is rotated with a tool (such as a wrench), and the bolt 18 is disengaged from the threaded hole 19, and the upper positioning block 14 and the lower positioning block 15 are disassembled, and the square block is rotated with a tool. 12. The square block 12 drives the sealing plate 10 to rotate through the positioning plate 12, and the sealing plate 10 is removed to complete the sand discharge work. After the sand discharge work is completed, the sealing plate 10 is installed into the bottom of the sand discharge pipe 4, and the upper top block 14 is installed into the positioning port 13. The bolt 18 passes through the through hole 17 and is connected with the threaded hole 19. The bolt 18 is tightened, and the lower positioning block 15 supports the positioning plate 11 set at the bottom of the sealing plate 10 to strengthen the fixation of the sealing plate 10, so that the sealing plate 10 is fixed firmly, and the sealing plate 10 is installed, and the top of the sealing plate 10 supports the fixing ring 9, which further strengthens the sealing of the sand discharge pipe 4 to prevent natural gas leakage.

[0019] Among them, the inner wall surface of the sand discharge pipe 4 at the bottom of the fixing ring 9 is provided with an internal thread, and the side of the blocking plate 10 is provided with an external thread. The external thread provided on the surface of the blocking plate 10 cooperates with the internal thread provided in the sand discharge pipe 4 to install or remove the blocking plate;

[0020] The air inlet pipe 5 is connected to the upper part of the first connecting pipe 7, and the first connecting pipe 7 is provided with first flat gate valves 71 at both sides of the air inlet pipe 5. The air outlet pipe 6 is connected to the bottom of the second connecting pipe 8, and the second connecting pipe 8 is provided with second flat gate valves 81 at both sides of the air outlet pipe 6. By opening or closing the first flat gate valve 71 and the second flat gate valve 81 on the same side of the air inlet pipe 6 and the air outlet pipe 8, the natural gas will only pass through the desander 1 or the desander 2, and one of the desanders will be tilted;

[0021] A flushing pipe 3 is provided on the upper left side of the desander 1 and the upper right side of the desander 2. A flat gate valve is provided on the flushing pipe 3. The flat gate valve provided on the flushing pipe 3 is opened, and the flushing pipe 3 is connected to a high-pressure water gun to clean the desander 1 or the desander 2.

[0022] Working principle: for the treatment of the extracted natural gas, the natural gas enters the first connecting pipe 7 through the air inlet pipe 5, and enters the desander 1 and the desander 2 through the first connecting pipe 7, and the natural gas is desanded. The natural gas after desanding enters the air outlet pipe 6 through the second connecting pipe 8 and flows to the downstream equipment. The first flat gate valve 71 and the second flat gate valve 81 of the first connecting pipe 7 and the second connecting pipe 8 on the same side of the air inlet pipe 5 and the air outlet pipe 6 are closed, and the natural gas will only enter one of the desander 1 or the desander 2. The other desander is cleaned and the filter is replaced to clean the desander 1 or the desander 2, but the desanding work of the desander 1 or the desander 2 will not be stopped, so as to ensure that the natural gas is always desanded, and the working efficiency of the desander is improved. When the natural gas enters through the sand discharge pipe 4 To discharge sand, use a tool (such as a wrench) to rotate the bolt 18, the bolt 18 disengages from the threaded hole 19, and the upper positioning block 14 and the lower positioning block 15 are disassembled. Use a tool to rotate the square block 12, and the square block 12 drives the sealing plate 10 to rotate through the positioning plate 12, and the sealing plate 10 is removed to complete the sand discharge work. After the sand discharge work is completed, the sealing plate 10 is installed into the bottom of the sand discharge pipe 4, and the upper top block 14 is installed into the positioning port 13. The bolt 18 passes through the through hole 17 and is connected with the threaded hole 19. The bolt 18 is tightened, and the lower positioning block 15 supports the positioning plate 11 set at the bottom of the sealing plate 10 to strengthen the fixation of the sealing plate 10, so that the sealing plate 10 is fixed firmly, and the sealing plate 10 is installed, and the top of the sealing plate 10 supports the fixing ring 9, which further strengthens the sealing of the sand discharge pipe 4 to prevent natural gas leakage.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-channel desander for natural gas production, comprising a desander 1 (1), a desander 2 (2), a flushing pipe (3), a sand discharge pipe (4), an air inlet pipe (5) and an air outlet pipe (6), characterized in that: A first connecting pipe (7) is arranged at the upper part between the first desander (1) and the second desander (2), a second connecting pipe (8) is arranged at the lower part between the first desander (1) and the second desander (2), a fixing ring (9) is arranged at the lower part of the inner wall of the sand discharge pipe (4), a sealing plate (10) is arranged at the bottom of the sand discharge pipe (4), a positioning plate (11) is arranged at the bottom of the sealing plate (10), and a square block (12) is arranged at the bottom of the positioning plate (11), A positioning opening (13) is provided at the lower part of the side of the sand discharge pipe (4), an upper positioning block (14) is provided in the positioning opening (13), a lower positioning block (15) is provided on the right side of the positioning plate (11), clamping plates (16) are provided at both ends of the bottom of the positioning plate (11), a through hole (17) is provided on the lower positioning block (15), a bolt (18) is provided in the through hole (17), and a threaded hole (19) is provided at the bottom of the upper positioning block (14).

2. A dual-channel desander for natural gas development according to claim 1, characterized in that: The sand discharge pipe (4) is provided with an internal thread on the inner wall surface at the bottom of the fixing ring (9), and an external thread is provided on the side of the sealing plate (10).

3. A dual-channel desander for natural gas development according to claim 1, characterized in that: The air intake pipe (5) is connected to the upper part of the first connecting pipe (7), and the first connecting pipe (7) is provided with first flat gate valves (71) at both sides of the air intake pipe (5).

4. A dual-channel desander for natural gas development according to claim 1, characterized in that: The air outlet pipe (6) is connected to the bottom of the second connecting pipe (8), and the second connecting pipe (8) is provided with second flat gate valves (81) at positions on both sides of the air outlet pipe (6).

5. A dual-channel desander for natural gas development according to claim 1, characterized in that: A flushing pipe (3) is provided on the upper left side of the desander 1 (1) and the upper right side of the desander 2 (2), and a flat gate valve is provided on the flushing pipe (3).

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