Leak-proof device for oil field fracturing fluid treatment

Abstract

The utility model relates to the field of oil field fracturing fluid treatment, in particular to an anti-leakage device for oil field fracturing fluid treatment, which aims at solving the problem that toxic gas is inconvenient to collect and purify in the oil field fracturing fluid treatment process in the prior art, and adopts the following scheme that the anti-leakage device comprises a filtering tank and a purification mechanism arranged on the periphery of the filtering tank, the purification mechanism comprises two communicating pipes and two filter cartridges detachably connected between the two communicating pipes, a first valve and a second valve are installed on the communicating pipes, an adjusting assembly used for opening and closing the first valve and the second valve is installed on the communicating pipes, and the first valve and the second valve are located between the two filter cartridges; wherein an air outlet pipe communicated with the filtering tank is fixed on one side of the communicating pipe. According to the oil field fracturing fluid treatment device, leakage of poisonous gas can be effectively prevented in the oil field fracturing fluid treatment process, the filter cartridge can be conveniently replaced, and purification of the poisonous gas cannot be interrupted.

Description

Technical Field

[0001] The utility model relates to the field of oilfield fracturing fluid treatment, in particular to an anti-leakage device for oilfield fracturing fluid treatment. Background Art

[0002] The oilfield fracturing fluid treatment device is a liquid with high viscosity and high salinity, containing a large amount of chemical agents and additives. If not properly treated, it will cause serious environmental pollution and is usually used in the process of oil and gas extraction. Since impurities mixed in the oilfield fracturing fluid need to be filtered out after recovery, corresponding filtering devices are required.

[0003] During the filtering process, some toxic gases in the oilfield fracturing fluid will escape from the oilfield fracturing fluid. When these gases leak into the external air, it will cause relatively serious air pollution. However, the existing filtering devices cannot conveniently and effectively purify these gases. Therefore, this solution proposes an anti-leakage device for oilfield fracturing fluid treatment. Summary of the Invention

[0004] The anti-leakage device for oilfield fracturing fluid treatment proposed by the utility model solves the problem that it is not convenient to collect and purify toxic gases during the treatment of oilfield fracturing fluid in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An anti-leakage device for oilfield fracturing fluid treatment includes a filtering tank and a purification mechanism installed on the outer periphery of the filtering tank.

[0007] The purification mechanism includes two connecting pipes and two filtering cylinders detachably connected between the two connecting pipes. A first valve and a second valve are installed on the connecting pipes, and an adjusting component for opening and closing the first valve and the second valve is installed on the connecting pipes. The first valve and the second valve are located between the two filtering cylinders. One side of the connecting pipe is fixed with an air outlet pipe communicated with the filtering tank, and the connection point of the air outlet pipe and the connecting pipe is located between the first valve and the second valve. An air delivery pipe is also installed on the outer periphery of the other connecting pipe, and the connection point of the air delivery pipe and the connecting pipe is located between the first valve and the second valve.

[0008] A filter screen and activated carbon are installed inside the filtering cylinder, and butt joints are fixed at both ends of the filtering cylinder. Fixed components connected to the butt joints are installed on both connecting pipes.

[0009] Through the above technical scheme, not only can the leakage of toxic gases be effectively prevented during the treatment of oilfield fracturing fluid, but also the filtering cylinder can be conveniently replaced without interrupting the purification of toxic gases.

[0010] As a further improvement of the above solution, the fixing component includes two telescopic tubes fixed to the outer periphery of the connecting pipe. Both the first valve and the second valve are located between the two telescopic tubes. The telescopic tube includes a fixed tube fixed to the outer periphery of the connecting pipe and a connecting tube movably sleeved on the outer periphery of the fixed tube. A locking bolt is threadedly connected to the outer periphery of the connecting tube, and the outer periphery of the butt joint pipe fits with the inner ring of the connecting tube.

[0011] Through the above technical solution, the filter cartridge can be conveniently disassembled and assembled.

[0012] As a further improvement of the above solution, gears are sleeved on the outer peripheries of the valve stems of both the first valve and the second valve. The adjusting component includes a rack arranged outside the connecting pipe and a grip fixed to the outer wall of the long side of one side of the rack. The rack meshes with the two gears. A plurality of limiting sleeves are movably sleeved on the outer periphery of the rack, and the limiting sleeves are fixed to the outer periphery of the connecting pipe.

[0013] Through the above technical solution, it is convenient to close the second valve while opening the first valve, and close the first valve while opening the second valve.

[0014] As a further improvement of the above solution, two positioning holes are opened on the outer periphery of the connecting pipe. The two positioning holes and the grip are both arranged between the first valve and the second valve. There is a gap between the two positioning holes, and the connection line between the centers of the two positioning holes is in the same direction as the length direction of the rack. A positioning bolt is threadedly connected to the grip, and the positioning bolt fits with the positioning hole.

[0015] Through the above technical solution, it is convenient to fix the grip and the rack.

[0016] As a further improvement of the above solution, an absorption mechanism is further included. The absorption mechanism includes a water tank, a water inlet pipe installed at the top of one side of the water tank, and a water outlet pipe installed at the bottom of the other side of the water tank. Solenoid valves are installed on both the water inlet pipe and the water outlet pipe. One end of the air delivery pipe extends into the water tank, and an air outlet hole is opened on the top surface of the water tank.

[0017] Through the above technical solution, the gas discharged from the air delivery pipe can be further purified.

[0018] As a further improvement of the above solution, a stirring paddle is installed on the inner wall of the bottom of the water tank, and a motor for driving the stirring paddle to rotate is installed on the bottom surface of the water tank.

[0019] Through the above technical solution, the reaction absorption of the gas and the active ingredients in the absorption liquid can be accelerated.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. By setting up a purification mechanism, not only can the leakage of toxic gases into the external air be effectively prevented, but the toxic gases can also be purified in a timely manner. At the same time, the setting of two filter cartridges allows the gas to pass through one of the filter cartridges during purification, so that the other filter cartridge can be disassembled and replaced, thereby ensuring that the purification mechanism can be continuously used.

[0022] 2. By setting up an absorption mechanism, the harmful substances in the filtered gas can be further absorbed. Moreover, the setting of the stirring paddle also helps to accelerate the fusion reaction between the harmful components in the gas and the absorption liquid in the water tank, thereby improving the absorption and purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the present utility model;

[0024] Figure 2 is Figure 1 a schematic structural view after the first connecting pipe and the filter cartridge are separated in

[0025] Figure 3 a schematic internal structural view of the water tank.

[0026] MAIN SYMBOL DESCRIPTION:

[0027] 1, filter tank; 2, connecting pipe; 3, grip; 4, first valve; 5, filter cartridge; 6, connecting pipe; 7, second valve; 8, rack; 9, gas delivery pipe; 10, water tank; 11, water inlet pipe; 12, water outlet pipe; 13, gas outlet pipe; 14, docking pipe; 15, fixed pipe; 16, gear; 17, positioning hole; 18, positioning bolt; 19, limit sleeve; 20, stirring paddle; 21, motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, with reference to the drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0029] Embodiment 1

[0030] Please refer to Figure 1 - Figure 3, An anti-leakage device for treating oilfield fracturing fluid in this embodiment includes a filtration tank 1 and a purification mechanism installed on the outer periphery of the filtration tank 1. The purification mechanism includes two connecting pipes 2 and two filter cartridges 5 detachably connected between the two connecting pipes 2. A first valve 4 and a second valve 7 are installed on the connecting pipe 2, and an adjusting component for opening and closing the first valve 4 and the second valve 7 is installed on the connecting pipe 2. The first valve 4 and the second valve 7 are located between the two filter cartridges 5. One side of the connecting pipe 2 is fixed with an air outlet pipe 13 communicating with the filtration tank 1. The connection point of the air outlet pipe 13 and the connecting pipe 2 is located between the first valve 4 and the second valve 7. An air delivery pipe 9 is also installed on the outer periphery of the other connecting pipe 2, and the connection point of the air delivery pipe 9 and the connecting pipe 2 is located between the first valve 4 and the second valve 7. By respectively controlling the opening and closing of the first valve 4 and the second valve 7, the gas in the connecting pipe can be selectively introduced into one of the filter cartridges 5, so that the two filter cartridges 5 can be used alternately, which is convenient for disassembling, installing and replacing the unused filter cartridge 5.

[0031] Gears 16 are sleeved on the outer peripheries of the valve stems of the first valve 4 and the second valve 7. The adjusting component includes a rack 8 arranged outside the connecting pipe 2 and a grip 3 fixed on the outer wall of the long side of one side of the rack 8. The rack 8 meshes with the two gears 16. A plurality of limit sleeves 19 are movably sleeved on the outer periphery of the rack 8, and the limit sleeves 19 are fixed on the outer periphery of the connecting pipe 2. Two positioning holes 17 are opened on the outer periphery of the connecting pipe 2. The two positioning holes 17 and the grip 3 are all arranged between the first valve 4 and the second valve 7. There is a gap between the two positioning holes 17, and the connection line between the centers of the two positioning holes 17 is in the same direction along the length direction of the rack 8. A positioning bolt 18 is threadedly connected to the grip 3, and the positioning bolt 18 fits with the positioning hole 17. When moving the rack 8 upward, the two gears 16 can be driven to rotate forward simultaneously, and then the first valve 4 can be opened while the second valve 7 is closed. Then the positioning bolt 18 is screwed into the upper positioning hole 17 to fix the rack 8. At this time, the gas in the connecting pipe 2 will pass through the upper filter cartridge 5, and then enter the other connecting pipe 2 after filtration, and finally be discharged through the air delivery pipe 9. At this time, the lower filter cartridge 5 can be disassembled, installed and replaced. When moving the rack 8 downward, the first valve 4 can be closed and the second valve 7 can be opened, and then the positioning bolt 18 is screwed into the lower positioning hole 17 to fix the rack 8. At this time, the gas in the connecting pipe 2 will pass through the lower filter cartridge 5, and then enter the other connecting pipe 2 after filtration, and finally be discharged through the air delivery pipe 9. At this time, the upper filter cartridge 5 can be disassembled, installed and replaced. While operating the adjusting component on the connecting pipe 2 communicating with the filtration tank 1, the same operation is also performed on the adjusting component on the other connecting pipe 2.

[0032] A filter cartridge 5 is internally provided with a filter screen and activated carbon, and docking pipes 14 are fixed at both ends of the filter cartridge 5. Fixed components connected to the docking pipes 14 are installed on both connecting pipes 2. The fixed components include two telescopic pipes fixed on the outer periphery of the connecting pipe 2. The first valve 4 and the second valve 7 are both located between the two telescopic pipes. The telescopic pipe includes a fixed pipe 15 fixed on the outer periphery of the connecting pipe 2 and a connecting pipe 6 movably sleeved on the outer periphery of the fixed pipe 15. A locking bolt is threadedly connected to the outer periphery of the connecting pipe 6. The inner circle of the connecting pipe 6 on the outer periphery of the docking pipe 14 is in fit. When disassembling and assembling the filter cartridge 5, first loosen the locking bolt, and then the connecting pipe 6 can be moved to withdraw it from the outer periphery of the docking pipe 14, and then the filter cartridge 5 can be disassembled from the connecting pipe 2.

[0033] The implementation principle of this embodiment is as follows: When treating oilfield fracturing fluid, the oilfield fracturing fluid is input into the filter tank 1 for filtration. The toxic gas dissipated during the filtration process will enter one of the connecting pipes 2 through the air outlet pipe 13. At this time, move the rack 8 upward to open the first valve 4 and close the second valve 7, and then screw the positioning bolt 18 into the upper positioning hole 17 to fix the rack 8. At this time, the gas in this connecting pipe 2 will pass through the upper filter cartridge 5, and then enter the other connecting pipe 2 after filtration, and finally be discharged through the air delivery pipe 9. After a period of time, screw the positioning bolt 18 out of the positioning hole 17, and then move the rack 8 downward until the first valve 4 is completely closed and the second valve 7 is completely opened, and then screw the positioning bolt 18 into the lower positioning hole 17 to fix the rack 8. At this time, the gas in this connecting pipe 2 will pass through the lower filter cartridge 5, and then enter the other connecting pipe 2 after filtration, and finally be discharged through the air delivery pipe 9. Thus, the upper filter cartridge 5 can be disassembled and then a new filter cartridge 5 can be replaced. On the contrary, when the lower filter cartridge 5 needs to be replaced, the rack 8 is moved upward again to open the first valve 4 and close the second valve 7, and the lower filter cartridge 5 can be replaced.

[0034] Embodiment 2

[0035] Combined with Figure 1 and Figure 3, on the basis of Embodiment 1, the further improvement of this embodiment lies in: it further includes an absorption mechanism. The absorption mechanism includes a water tank 10, a water inlet pipe 11 installed at the top on one side of the water tank 10, and a water outlet pipe 12 installed at the bottom on the other side of the water tank 10. Solenoid valves are installed on both the water inlet pipe 11 and the water outlet pipe 12. One end of the water inlet pipe 11 extends into the water tank 10. An air outlet hole is opened on the top surface of the water tank 10. One end of the gas transmission pipe 9 extends into the water tank 10. A stirring paddle 20 is installed on the inner wall of the bottom of the water tank 10. A motor 21 for driving the stirring paddle 20 to rotate is installed on the bottom surface of the water tank 10. An absorption liquid is contained in the water tank 10, and the surface height of the absorption liquid should exceed the height of the end of the water inlet pipe 11 inside the water tank 10. The end of the gas transmission pipe 9 located inside the water tank 10 is also below the liquid level.

[0036] The implementation principle of this embodiment is as follows: The gas discharged from the gas transmission pipe 9 enters the water tank 10, and then the harmful substances in the gas are absorbed and decomposed by the components in the absorption liquid, and finally discharged from the air outlet hole. Moreover, at regular intervals, the solenoid valves on the water inlet pipe 11 and the water outlet pipe 12 are opened simultaneously to replace the absorption liquid in the water tank 10, and then the two solenoid valves are closed after the replacement is completed.

[0037] The above-mentioned implementation manner is only the preferred implementation manner of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the protection scope required by the present invention.

Claims

1. An anti-leakage device for treating oilfield fracturing fluid, comprising a filtration tank and a purification mechanism installed on the outer periphery of the filtration tank, characterized in that the purification mechanism includes two connecting pipes and two filter cylinders detachably connected between the two connecting pipes. A first valve and a second valve are installed on the connecting pipes, and an adjustment component for opening and closing the first valve and the second valve is installed on the connecting pipes. The first valve and the second valve are located between the two filter cylinders. An air outlet pipe communicating with the filtration tank is fixed on one side of the connecting pipe, and the connection point of the air outlet pipe and the connecting pipe is located between the first valve and the second valve. An air delivery pipe is further installed on the outer periphery of the other connecting pipe, and the connection point of the air delivery pipe and the connecting pipe is located between the first valve and the second valve; a filter screen and activated carbon are installed inside the filter cylinder, and docking pipes are fixed at both ends of the filter cylinder. Fixed components connected to the docking pipes are installed on both connecting pipes.

2. The anti-leakage device for treating oilfield fracturing fluid according to claim 1, characterized in that, The fixed component includes two telescopic pipes fixed on the outer periphery of the connecting pipe. The first valve and the second valve are both located between the two telescopic pipes. The telescopic pipe includes a fixed pipe fixed on the outer periphery of the connecting pipe and a connecting pipe movably sleeved on the outer periphery of the fixed pipe. A locking bolt is threadedly connected to the outer periphery of the connecting pipe, and the outer periphery of the docking pipe fits with the inner ring of the connecting pipe.

3. The anti-leakage device for treating oilfield fracturing fluid according to claim 1, characterized in that, Gears are sleeved on the outer peripheries of the valve stems of the first valve and the second valve. The adjustment component includes a rack arranged outside the connecting pipe and a grip fixed on the outer wall of the long side of one side of the rack. The rack meshes with the two gears. A plurality of limiting sleeves are movably sleeved on the outer periphery of the rack, and the limiting sleeves are fixed on the outer periphery of the connecting pipe.

4. The anti-leakage device for treating oilfield fracturing fluid according to claim 3, wherein, Two positioning holes are formed on the outer periphery of the connecting pipe. The two positioning holes and the grip are all arranged between the first valve and the second valve. There is a gap between the two positioning holes, and the connection line between the centers of the two positioning holes is in the same direction along the length direction of the rack. A positioning bolt is threadedly connected to the grip, and the positioning bolt fits with the positioning hole.

5. The anti-leakage device for treating oilfield fracturing fluid according to claim 1, wherein, An absorption mechanism is further included. The absorption mechanism includes a water tank, a water inlet pipe installed at the top of one side of the water tank, and a water outlet pipe installed at the bottom of the other side of the water tank. Solenoid valves are installed on both the water inlet pipe and the water outlet pipe. One end of the air delivery pipe extends into the water tank, and an air outlet hole is formed on the top surface of the water tank.

6. The anti-leakage device for treating oilfield fracturing fluid according to claim 5, characterized in that, A stirring paddle is installed on the inner wall of the bottom of the water tank, and a motor for driving the stirring paddle to rotate is installed on the bottom surface of the water tank.

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