A sand cleaning device for a liquid storage tank

Abstract

The utility model relates to oil and gas field gas production technology field, concretely relates to a kind of sand cleaning device of liquid storage tank, including flushing mechanism and flow guide mechanism, flushing mechanism includes pump and flushing pipe, pump detachably connects flushing pipe, pump is set in filter cover, pump can be placed in sewage pool and is connected by flushing pipe with the top opening of liquid storage tank, flow guide mechanism is equipped with flow guide groove, and anti-seepage mechanism is equipped in flow guide groove, and flow guide groove can be connected with the bottom outlet of liquid storage tank and sewage pool.Pump can extract sewage in sewage pool for sand cleaning of liquid storage tank through filter cover, while the mixed liquor of sand and water discharged in sand cleaning process of liquid storage tank can be guided into sewage pool by flow guide mechanism, realize the circulating water of sand cleaning process, reduce water supply vehicle water supply, further realize to reduce the labor and material resources consumption of sand cleaning process, simultaneously, since the mixed liquor exported by liquid storage tank is transported by flow guide mechanism with anti-seepage mechanism, it is not easy to flow everywhere, can effectively avoid causing pollution and reduce cleaning cost.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas field gas production technology, specifically to a sand removal device for a liquid storage tank. Background Technology

[0002] With the continuous promotion and application of large-volume fracturing technology in oil and gas fields, the amount of sand injected into the ground in a single well has increased several times compared with conventional fracturing. The sand production of gas wells caused by volume fracturing has led to a large amount of sand settling in the storage tank. In order to ensure safe production, it is necessary to carry out regular sand cleaning operations in the storage tank. Existing sand removal operations using storage tanks typically require transporting the mixed liquid inside the tank, purging the internal space with nitrogen, and then using a water truck to inject water through the manhole to flush the sand. The mixture of water and sand is then discharged directly into the cofferdam from the drain outlet at the bottom of the storage tank, flowing into a sewage tank. During the cleaning process, the water volume in the sewage tank gradually increases, requiring a sewage truck to simultaneously pump out the sewage. As a result, the entire sand removal operation requires the simultaneous preparation of a water truck for water supply and a sewage truck for sewage pumping. One worker controls the water truck supply, one worker performs the sand removal operation, one worker pumps out the sewage, and one worker monitors the combustible gas content. The sand removal operation consumes a lot of manpower and resources, and the discharged water and sand mixture is prone to flowing into the cofferdam, causing pollution that is difficult to clean. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing sand cleaning process, which consumes a lot of manpower and material resources and the discharge of mixed liquid is prone to pollution, and to provide a storage tank sand cleaning device.

[0004] This utility model provides a sand removal device for a liquid storage tank, including...

[0005] A flushing mechanism, comprising a pump and a flushing pipe, wherein the pump is detachably connected to the flushing pipe, the pump is disposed inside a filter cover, and the pump can be placed in a sewage tank and connected to the top opening of a storage tank through the flushing pipe;

[0006] The flow guiding mechanism is provided with a flow guiding channel, and the flow guiding channel is provided with an anti-seepage mechanism. The flow guiding channel can connect the bottom outlet of the storage tank and the sewage pool.

[0007] This utility model discloses a sand cleaning device for a storage tank. By placing a pump inside a filter cover, the pump can draw sewage from a wastewater tank through the filter cover for sand cleaning of the storage tank. The mixture of sand and water discharged from the storage tank during the sand cleaning process can be guided into the wastewater tank through a diversion mechanism, realizing the recycling of water during the sand cleaning process, reducing the need for water supply trucks, and thus reducing the manpower and material consumption of the sand cleaning process. At the same time, since the mixture output from the storage tank is transported through a diversion mechanism with an anti-seepage mechanism, it is not easy to flow around, which can effectively avoid pollution and reduce cleaning costs.

[0008] Preferably, the filter cover is detachably connected to the pump, and the filter cover has several through holes. Filter covers with different through hole diameters can be replaced according to actual needs, enabling the recycling of wastewater.

[0009] Preferably, the flushing pipe comprises at least two pipe segments, and adjacent pipe segments are detachably connected. The length of the flushing pipe can be adjusted according to actual conditions to facilitate thorough flushing of the storage tank.

[0010] Preferably, a nozzle is provided at the end of the flushing pipe away from the pump. The nozzle can adjust the flow rate of the output liquid according to the actual situation, facilitating the rapid flushing of sand accumulation in the storage tank to varying degrees.

[0011] Preferably, the flow guiding mechanism includes at least two frame members, adjacent frame members are spliced ​​to form the flow guiding channel, and the seepage prevention component is detachably connected to the flow guiding channel. The flow guiding mechanism has a simple structure, and the length of the flow guiding channel can be adjusted according to actual conditions to adapt to on-site usage requirements.

[0012] Preferably, the seepage-proof mechanism includes a seepage-proof fabric component. The seepage-proof fabric component is flexible, easy to install, and cost-effective, and can adapt to the receiving and conveying of mixed liquids in irregularly shaped spaces below the storage tank.

[0013] Preferably, the seepage prevention mechanism includes a seepage-proof membrane laid on the seepage-proof fabric component. The seepage-proof membrane is less expensive than the seepage-proof fabric component, further reducing the cost of the sand removal process.

[0014] Preferably, the frame component includes a bottom frame, on which two side frames are provided opposite each other to form the flow guide groove. The flow guide mechanism and the side frames are detachably connected by a binding member. The frame component has a simple structure, and the binding member makes it convenient to fix the flow guide mechanism.

[0015] Preferably, at least two of the frame members are provided with connecting crossbars, which connect the two opposite side frames, and at least one connecting crossbar is provided at the end of the frame member. The connecting crossbars can improve the overall structural strength of the frame members. Depending on the actual situation, connecting crossbars can be provided on the frame members located at both ends of the flow guiding mechanism, making the entire flow guiding channel structure stable and facilitating the stable connection of the anti-seepage mechanism at the end positions.

[0016] Preferably, the frame component is provided with rollers at its bottom to facilitate the movement of the flow guiding mechanism.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model provides a sand cleaning device for a storage tank. By placing a pump inside a filter cover, the pump can draw sewage from the sewage tank through the filter cover for sand cleaning of the storage tank. The mixture of sand and water discharged from the storage tank during the sand cleaning process can be guided into the sewage tank through a diversion mechanism, which can realize the recycling of water during the sand cleaning process, reduce the water supply from the water supply truck, and reduce the manpower and material consumption during the sand cleaning process.

[0019] 2. This utility model provides a sand removal device for a liquid storage tank. The mixed liquid output from the liquid storage tank is transported to the sewage pool through a flow guiding mechanism with an anti-seepage mechanism, which makes it less likely to flow around and can effectively avoid pollution and reduce cleaning costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the rinsing mechanism described in Example 1.

[0021] Figure 2 This is a structural schematic diagram of the frame component described in Example 1.

[0022] Figure 3 This is a schematic diagram of the end structure of the flow guiding mechanism described in Example 1.

[0023] Figure 4 This is a top view of the flow guiding mechanism described in Example 1.

[0024] Figure 5 This is a simplified diagram showing the usage status of a sand removal device for a liquid storage tank according to Example 1.

[0025] Marked in the image:

[0026] 1-Flushing mechanism, 11-Pump, 12-Flushing pipe, 121-Pipe segment, 13-Nozzle, 14-Filter cover, 141-Through hole;

[0027] 2-Flow guiding mechanism, 21-Flow guiding channel, 22-Frame component, 221-Bottom frame, 222-Side frame, 223-Connecting crossbar;

[0028] 3-Impering mechanism, 31-Impering cloth component, 32-Impering membrane;

[0029] 4-Storage tank, 5-Sewage pool, 6-Binding device, 7-Roller. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1

[0037] like Figures 1-4 As shown, a sand removal device for a liquid storage tank includes a flushing mechanism 1 and a flow guiding mechanism 2. The flushing mechanism 1 includes a pump 11 and a flushing pipe 12. The pump 11 is detachably connected to the flushing pipe 12. The pump 11 is installed inside a filter cover 14. The pump 11 can be placed in a sewage tank 5 and connected to the top opening of the liquid storage tank 4 through the flushing pipe 12. The flow guiding mechanism 2 is provided with a flow guiding channel 21. The flow guiding channel 21 is provided with an anti-seepage mechanism 3. The flow guiding channel 21 can connect the bottom outlet of the liquid storage tank 4 and the sewage tank 5.

[0038] like Figure 1 , Figure 5 As shown, the flushing mechanism 1 is used to connect the sewage tank 5 and the storage tank 4. It is used to filter the water in the sewage tank 5 through the filter cover 14 and then pump it through the flushing pipe 12 to the storage tank 4 for sand removal.

[0039] In one or more embodiments, the filter cover 14 is detachably connected to the pump 11, and the filter cover 14 is provided with a plurality of through holes 141. Filter covers 14 with different through hole diameters 141 can be replaced according to actual conditions to achieve the recycling of sewage.

[0040] In an optional embodiment, the filter cover 14 can be a structural component made of filter screen, and can be any shape such as cup-shaped, barrel-shaped, or cage-shaped. The filter cover 14 can completely cover the pump 11 to remove sand and impurities from the water entering the pump 11, and prevent sand and impurities from affecting the normal operation of the pump 11.

[0041] In an optional embodiment, multiple filter covers 14 can be provided, and each pair of filter covers 14 can have different mesh sizes to achieve different filtration effects and adapt to the removal of gravel of different particle sizes.

[0042] In an optional embodiment, the pump 11 can be placed inside the filter cover 14 for detachable connection, or the filter cover 14 can be prepared into a certain inner cavity according to the shape of the pump 11 to accommodate and connect the pump 11.

[0043] The flushing pipe 12 is used to transport liquid for sand removal operations and connects the pump 11 and the storage tank 4.

[0044] In one or more embodiments, the flushing pipe 12 may include at least two pipe segments 121, which are detachably connected to each other.

[0045] In an optional embodiment, the pipe segment 121 can be a flexible hose, and adjacent pipe segments 121 can be connected by a quick-release structure such as a snap-fit ​​to realize the assembly of the flushing pipe 12. This allows the length of the flushing pipe 12 to be adjusted according to the actual situation, so as to facilitate thorough flushing of different positions in the liquid storage tank 4 and easy storage.

[0046] In one or more embodiments, a nozzle 13 may be provided at the end of the flushing pipe 12 away from the pump 11.

[0047] In an optional embodiment, the nozzle 13 can be a duckbill nozzle, which can cause the liquid delivered by the flushing pipe 12 to be converging and output, improving the flushing effect and facilitating handheld operation by the operator.

[0048] In an optional embodiment, the nozzle 13 may also adopt other nozzle structures according to the actual situation. Preferably, a nozzle 13 structure that can adjust the flow rate of the output liquid according to the actual situation is adopted, which facilitates the rapid flushing of sand accumulation in the liquid storage tank 4 to different degrees.

[0049] like Figures 2-4 As shown, the diversion mechanism 2 is used to receive the mixture of sand and water output from the storage tank 4 and divert it to the sewage tank 5, so that the flushing mechanism 1, the storage tank 4, the diversion mechanism 2 and the sewage tank 5 are connected in a cycle, so as to realize the recycling of water in the sand cleaning operation.

[0050] In one or more embodiments, the flow guiding mechanism 2 may include at least two frame members 22, adjacent frame members 22 are spliced ​​to form a flow guiding channel 21, and the seepage prevention component is detachably connected to the flow guiding channel 21. The flow guiding mechanism 2 formed by splicing frame members 22 has a simple structure, is easy to operate, and the length of the flow guiding channel 21 can be adjusted according to actual conditions to adapt to on-site usage requirements.

[0051] In an optional embodiment, the anti-seepage mechanism 3 may include an anti-seepage fabric component 31. The anti-seepage fabric component 31 is flexible, easy to install, and cost-effective, and can be adapted to the receiving and conveying of the mixed liquid below the storage tank 4.

[0052] In an optional embodiment, the impermeable fabric component 31 can be a trough-shaped structure made of impermeable fabric. The top of the impermeable fabric component 31 extends to the top of the operating frame component 22, and the bottom and side walls are attached to the guide channel 21. It can be tied to the frame component 22 by passing through the binding parts 6 such as cable ties, ropes, and wires, forming a connected guide channel 21 that can longitudinally span multiple frame components 22. Furthermore, the impermeable fabric component 31 can extend to the bottom of the storage tank 4 at its end for easier collection and transportation of the mixed liquid, which can effectively prevent the mixed liquid from flowing into the cofferdam and causing environmental pollution, and reduce the amount of subsequent cofferdam cleaning work.

[0053] In an optional embodiment, the anti-seepage mechanism 3 may include an anti-seepage membrane 32 laid on the anti-seepage cloth component 31. The anti-seepage membrane 32 is laid on the anti-seepage cloth component 31 to protect the anti-seepage cloth component 31 and guide the mixed liquid through its own anti-seepage effect. When the anti-seepage membrane 32 is damaged, only the anti-seepage membrane 32 needs to be replaced, instead of replacing the entire anti-seepage mechanism 3, thus extending the service life of the anti-seepage mechanism 3 and further reducing the cost of the sand removal operation.

[0054] In an optional embodiment, the impermeable fabric component 31 can be an impermeable geotextile, waterproof canvas, etc., and the impermeable membrane 32 can be a plastic film.

[0055] In an optional embodiment, the frame member 22 may include a bottom frame 221, on which two side frames 222 are provided opposite to each other to form a guide groove 21. The frame member 22 has a simple structure and can be connected and fixed by binding materials 6 such as iron wire, making operation convenient.

[0056] In an optional embodiment, the bottom frame 221 can be a rectangular hollow steel pipe welded structural component, and the side frame 222 can be a rectangular hollow steel pipe welded structural component, which has a simple structure and is easy to assemble.

[0057] In an optional embodiment, the side frame 222 can be welded to the bottom frame 221 to ensure the structural strength of the frame component 22; alternatively, the bottom frame 221 and the side frame 222 can be hinged and then fixed by buckles, cable ties, etc., to facilitate the storage of the frame component 22, reduce transportation costs, and enable the reuse of the sand cleaning device.

[0058] In an optional implementation, the number of frame members 22 used for longitudinal splicing and the included angle between adjacent frame members 22 can be adjusted according to the actual situation to adjust the length and extension direction of the guide channel 21.

[0059] In an optional embodiment, at least two frame members 22 may be additionally provided with connecting crossbars 223. The connecting crossbars 223 connect the opposite side frames 222. At least one connecting crossbar 223 is provided at the end of the frame member 22. The connecting crossbars 223 can improve the overall structural strength of the frame member 22 and limit the end of the guide channel 21.

[0060] In an optional embodiment, the frame members 22 located at both ends of the flow guiding mechanism 2 can be provided with connecting crossbars 223, and the connecting crossbars 223 are located at both ends of the flow guiding channel 21, so that the entire flow guiding channel 21 structure is stable and the anti-seepage mechanism 3 can be stably connected at the end position.

[0061] In an optional embodiment, the bottom of the frame member 22 may be provided with rollers 7, which are located at the bottom of the bottom frame 221 to facilitate the movement of the flow guiding mechanism 2.

[0062] This embodiment provides a sand-removing device for a liquid storage tank. When in use, as follows: Figure 5 As shown, there is no need to use a water supply truck. Simply immerse the pump 11 installed in the filter cover 14 in the liquid in the sewage tank 5, assemble the flushing pipe 12 and extend it to the top opening of the storage tank 4. A flow guiding mechanism 2 is installed at the bottom opening of the storage tank 4, and the flow guiding channel 21 extends to the sewage tank 5. One worker operates the flushing pipe 12 to clean the sediment in the storage tank 4, and another worker is responsible for starting and stopping the pump 11. The sand cleaning operation of the storage tank 4 can be completed by two workers.

[0063] This embodiment of a liquid storage tank sand cleaning device involves placing a pump 11 inside a filter cover 14, allowing the pump 11 to draw sewage from the sewage tank 5 through the filter cover 14 for sand cleaning of the liquid storage tank 4. The mixture of sand and water discharged from the liquid storage tank 4 during the sand cleaning process can be guided into the sewage tank 5 through a diversion mechanism 2, realizing the recycling of water during the sand cleaning process, reducing the need for water supply trucks, and thus reducing the manpower and material consumption in the sand cleaning process. At the same time, since the mixture output from the liquid storage tank 4 is transported through the diversion mechanism 2 with an anti-seepage mechanism 3, it is not easy for it to flow around and pollute the cofferdam, which can effectively avoid pollution, reduce environmental risks, and help reduce cleaning costs.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand removal device for a liquid storage tank, characterized in that, include A flushing mechanism (1) is provided, comprising a pump (11) and a flushing pipe (12). The pump (11) is detachably connected to the flushing pipe (12). The pump (11) is installed inside a filter cover (14). The pump (11) can be placed in a sewage tank (5) and connected to the top opening of a storage tank (4) through the flushing pipe (12). The flow guiding mechanism (2) is provided with a flow guiding channel (21), and the flow guiding channel (21) is provided with an anti-seepage mechanism (3). The flow guiding channel (21) can connect the bottom outlet of the storage tank (4) and the sewage pool (5).

2. The sand removal device for a liquid storage tank according to claim 1, characterized in that, The filter cover (14) is detachably connected to the pump (11), and the filter cover (14) is provided with several through holes (141).

3. The sand removal device for a liquid storage tank according to claim 1, characterized in that, The flushing pipe (12) includes at least two pipe segments (121), which are detachably connected to each other.

4. The sand removal device for a liquid storage tank according to claim 3, characterized in that, The flushing pipe (12) has a nozzle (13) at the end away from the pump (11).

5. A sand-removing device for a liquid storage tank according to any one of claims 1-4, characterized in that, The flow guiding mechanism (2) includes at least two frame members (22), adjacent frame members (22) are spliced ​​to form the flow guiding channel (21), and the seepage prevention mechanism (3) is detachably connected to the flow guiding channel (21).

6. The sand removal device for a liquid storage tank according to claim 5, characterized in that, The seepage prevention mechanism (3) includes a seepage prevention cloth component (31).

7. A sand-removing device for a liquid storage tank according to claim 6, characterized in that, The seepage prevention mechanism (3) includes a seepage prevention membrane (32) laid on the seepage prevention cloth component (31).

8. A sand-removing device for a liquid storage tank according to claim 5, characterized in that, The frame component (22) includes a bottom frame (221), on which two side frames (222) are provided opposite to each other to form the flow guide groove (21). The flow guide mechanism (2) and the side frames (222) are detachably connected by a binding member (6).

9. A sand-removing device for a liquid storage tank according to claim 8, characterized in that, At least two of the frame members (22) are provided with connecting crossbars (223), the connecting crossbars (223) connecting two opposite side frames (222), and at least one of the connecting crossbars (223) is provided at the end of the frame member (22).

10. A sand-removing device for a liquid storage tank according to claim 9, characterized in that, The frame member (22) is provided with rollers (7) at its bottom.

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