Injection pump filtration and recovery device

Abstract

This utility model discloses a booster pump filtration and recovery device, including a filtration system and a recovery system. The filtration system includes a pipe body composed of a straight pipe and an inclined pipe, an end cap with a drain outlet, a first filter screen, and a drain pipe with a drain valve. The two ends of the straight pipe are connected to the booster pump inlet pipeline. The upper end of the inclined pipe is connected to the middle of the straight pipe, and the lower end is fitted with an end cap. The first filter screen is located inside the inclined pipe, with both ends positioned between the inner wall of the pipe shell and the end cap. Water must pass through the first filter screen before passing through the straight pipe. The drain outlet is connected to the inside of the first filter screen, and the drain pipe is connected to the drain outlet. The recovery system includes a second filter screen for filtering wastewater discharged from the drain pipe, a water storage tank for collecting the filtered water from the second filter screen, and a booster pump for pressurizing and transporting the water in the water storage tank to the booster pump inlet pipeline. This device can filter impurities in the booster pump inlet pipeline online and can filter and recover flushing water, preventing wastewater discharge.

Description

Technical Field

[0001] This utility model relates to the filtration of injection pumps and wastewater treatment, specifically to an injection pump filtration and recovery device. Background Technology

[0002] During oilfield development, water injection is required to replenish formation energy. Currently, booster pumps are mainly used for pressurized water injection. However, during operation, due to water contamination along the inlet of the booster pump and the lack of filtration equipment in most pumps, impurities from the pipeline enter the pump, causing frequent blockages in the inlet and outlet valves. This necessitates frequent pump shutdowns for maintenance, each requiring 1-2 people and consuming 1-2 hours. This time-consuming and labor-intensive process impacts the water injection rate.

[0003] Currently, a small number of injection pumps have been equipped with filtration devices, but no effective sewage discharge design has been implemented. The sewage leaking from the injection pump packing is either discharged on-site or flows into the diversion pool along the sewage pipe at the bottom of the pump body and is then collected by tanker trucks periodically. If the sewage collection is not timely, it will cause sewage to be discharged into the surrounding well sites and farmland, resulting in waste of resources and environmental pollution. Utility Model Content

[0004] The purpose of this invention is to provide a booster pump filtration and recovery device that can filter impurities in the booster pump inlet pipeline online and can filter and recover flushing water, thus avoiding the discharge of sewage.

[0005] The technical solution adopted in this utility model is:

[0006] A booster pump filtration and recovery device includes a filtration system for filtering impurities in the booster pump inlet pipeline online and a recovery system for filtering, collecting, and returning the flushing water from the filtration system to the booster pump inlet pipeline. The filtration system includes a pipe body composed of a straight pipe and an inclined pipe, an end cap with a drain outlet, a first filter screen, and a drain pipe with a drain valve. The two ends of the straight pipe are connected to the booster pump inlet pipeline. The upper end of the inclined pipe is connected to the middle of the straight pipe, and the lower end is fitted with an end cap. The first filter screen is located inside the inclined pipe, and its two ends are positioned between the inner wall of the pipe shell and the end cap. Water must be filtered through the first filter screen before it can pass through the straight pipe. The drain outlet is connected to the inside of the first filter screen, and the drain pipe is connected to the drain outlet. The recovery system includes a second filter screen for filtering wastewater discharged from the drain pipe, a water storage tank for collecting the filtered water from the second filter screen, and a booster pump for pressurizing and transporting the water in the water storage tank to the booster pump inlet pipeline.

[0007] Preferably, the drain valve is a normally closed solenoid valve, and the drain valve is electrically connected to a time control switch.

[0008] Preferably, the first filter screen is cylindrical, with filter holes distributed at its upper end to separate the straight pipe from the front and back, the lower end facing the drain outlet and open, and an opening on the side facing the upstream of the water flow.

[0009] Preferably, the upper end of the first filter screen is inserted into the recessed groove at the intersection of the straight pipe and the inclined pipe, and the lower end is inserted into the recessed groove inside the end cap.

[0010] Preferably, there is a gap between the side of the first filter screen and the inner wall of the inclined tube.

[0011] Preferably, the water tank is equipped with a high level switch and a low level switch, and the booster pump is electrically connected to the high level switch and the low level switch respectively.

[0012] Preferably, a check valve is provided on the outlet pipeline of the booster pump.

[0013] Preferably, a third filter screen is provided at the inlet end of the booster pump, and the mesh size of the third filter screen is higher than that of the second filter screen.

[0014] Preferably, the third filter screen is located at the front end of the inlet pipe of the booster pump and is submerged at the bottom of the water tank.

[0015] Preferably, the second filter screen is cylindrical, with an open upper end and a closed lower end, and is provided with filter holes.

[0016] The beneficial effects of this utility model are:

[0017] This device can filter impurities in the inlet pipeline of the booster pump online and can filter and recycle flushing water, avoiding the discharge of sewage: when water passes through the straight pipe, it is filtered by the first filter screen. The filtered water enters the booster pump through the inlet pipeline of the booster pump. Flocculent matter and other impurities are intercepted and attached to the first filter screen. The pipeline is flushed periodically with high-pressure water in the pipeline or with clean water connected separately. The drain valve is opened, and the flushing water carrying impurities enters the second filter screen through the drain outlet and drain valve. The filtered water enters the water storage tank, where impurities are intercepted and attached to the second filter screen. Afterward, the booster pump pressurizes the water in the water storage tank and delivers it to the inlet pipeline of the booster pump. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the injection pump filtration and recovery device in Embodiment 1 of this utility model.

[0020] Figure 2 This is a schematic diagram of the injection pump filtration and recovery device in Embodiment 2 of this utility model.

[0021] In the diagram: 1-Inlet pipeline of booster pump; 2-Drain pipe; 3-Drain valve; 4-End cap; 5-First filter screen; 6-Inclined pipe; 7-Straight pipe; 8-Water storage tank; 9-Second filter screen; 10-Third filter screen; 11-Booster pump; 12-Check valve; 13-Timer switch; 14-High level switch; 15-Low level switch. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] Furthermore, the terms "first filter," "second filter," and "third filter" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0028] Example 1

[0029] This embodiment discloses a booster pump filtration and recovery device, such as... Figure 1As shown, it includes a filtration system and a recovery system; wherein: the filtration system is used to filter impurities in the inlet pipeline 1 of the booster pump online. The filtration system includes a pipe body, end caps 4, a first filter screen 5, and a drain pipe 2. The pipe body consists of a straight pipe 7 and an inclined pipe 6. The two ends of the straight pipe 7 are used to connect to the inlet pipeline 1 of the booster pump. The upper end of the inclined pipe 6 is connected to the middle of the straight pipe 7, and the lower end is equipped with an end cap 4. The end cap 4 has a drain port. The first filter screen 5 is located inside the inclined pipe 6, and its two ends are positioned between the inner wall of the pipe shell and the end cap 4. The water flow must pass through the first filter screen 5. The filter screen 5 filters the water before it passes through the straight pipe 7. The drain outlet is connected to the inside of the first filter screen 5. The drain pipe 2 is equipped with a drain valve 3 and is connected to the drain outlet. The recovery system is used to filter and collect the flushing water of the filter system and transport it back to the inlet pipeline 1 of the booster pump. The recovery system includes a second filter screen 9, a water tank 8, and a booster pump 11. The second filter screen 9 is used to filter the sewage discharged from the drain pipe 2. The water tank 8 is used to collect the filtered water from the second filter screen 9. The booster pump 11 is used to pressurize the water in the water tank 8 and transport it to the inlet pipeline 1 of the booster pump.

[0030] This device can filter impurities in the inlet pipeline 1 of the booster pump online and can filter and recycle flushing water, thus preventing wastewater discharge.

[0031] When water passes through the straight pipe 7, it is filtered by the first filter screen 5. The filtered water enters the booster pump through the booster pump inlet pipeline 1. Flocculent matter and other impurities are intercepted and attached to the first filter screen 5. The pipe body is periodically flushed with high-pressure water in the pipeline or with clean water. The drain valve 3 is opened, and the flushing water carrying impurities enters the second filter screen 9 through the drain outlet and drain valve 3. The filtered water enters the water storage tank 8, where impurities are intercepted and attached to the second filter screen 9. Afterward, the booster pump 11 pressurizes the water in the water storage tank 8 and delivers it to the booster pump inlet pipeline 1.

[0032] like Figure 1 As shown, in this embodiment, preferably, the first filter screen 5 is cylindrical, with filter holes distributed at its upper end to separate the straight pipe 7 from the front and back, the lower end facing the drain outlet and open, and an opening on the side facing the upstream of the water flow. This arrangement ensures that the water flow must be filtered by the first filter screen 5 before it can pass through the straight pipe 7.

[0033] like Figure 1 As shown, in this embodiment, preferably, the upper end of the first filter screen 5 is inserted into the groove at the intersection of the straight pipe 7 and the inclined pipe 6, and the lower end is inserted into the groove inside the end cap 4. The two grooves serve as positioning tools, making installation convenient.

[0034] like Figure 1 As shown, in this embodiment, preferably, there is a gap between the side of the first filter screen 5 and the inner wall of the inclined tube 6 to prevent impurities from getting stuck between the first filter screen 5 and the inner wall of the inclined tube 6 and being unable to be flushed away.

[0035] like Figure 1As shown, in this embodiment, preferably, a one-way valve 12 is provided on the outlet pipeline of the booster pump 11 to prevent liquid in the inlet pipeline 1 of the booster pump from flowing back into the booster pump 11 due to pressure difference when the booster pump 11 is not pumping liquid.

[0036] like Figure 1 As shown, in this embodiment, preferably, a third filter screen 10 is provided at the inlet end of the booster pump 11. The mesh size of the third filter screen 10 is higher than that of the second filter screen 9. The second filter screen 9 filters large particulate impurities and other sediments, while the third filter screen 10 filters small particulate impurities. Furthermore, the third filter screen 10 is located at the front end of the inlet pipe of the booster pump 11 and is submerged at the bottom of the water storage tank 8.

[0037] like Figure 1 As shown, in this embodiment, preferably, the second filter screen 9 is cylindrical, with an open upper end, a closed lower end, and filter holes distributed thereon.

[0038] Example 2

[0039] This embodiment discloses a second type of booster pump filtration and recovery device, such as... Figure 2 As shown, the difference between this and Embodiment 1 is: 1) The drain valve 3 is a normally closed solenoid valve. The drain valve 3 is electrically connected to the time control switch 13. Under the control of the time control switch 13, the drain valve 3 can be opened periodically to achieve periodic drainage; 2) The water tank 8 is equipped with a high level switch 14 and a low level switch 15. The booster pump 11 is electrically connected to the high level switch 14 and the low level switch 15 respectively. When the liquid level in the water tank 8 rises and triggers the high level switch 14, the booster pump 11 starts to pump liquid until the liquid level in the water tank 8 drops and triggers the low level switch 15, at which point the booster pump 11 shuts down. The automatic start and stop of the booster pump 11 is achieved by using the high level switch 14 and the low level switch 15. Water can be pumped when the water in the water tank 8 is stored to a certain level, and the pumping is prevented from drying out due to excessively low water level.

[0040] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A booster pump filtration and recovery device, characterized in that: The system includes a filtration system for filtering impurities in the inlet pipeline of the booster pump and a recovery system for filtering and collecting flushing water from the filtration system and returning it to the inlet pipeline of the booster pump. The filtration system includes a pipe body consisting of straight and inclined pipes, an end cap with a drain outlet, a first filter screen, and a drain pipe with a drain valve. The two ends of the straight pipe are used to connect to the inlet pipeline of the booster pump. The upper end of the inclined pipe is connected to the middle of the straight pipe, and the lower end is fitted with an end cap. The first filter screen is located inside the inclined pipe and its two ends are positioned between the inner wall of the pipe shell and the end cap. Water must be filtered through the first filter screen before it can pass through the straight pipe. The drain outlet is connected to the inside of the first filter screen, and the drain pipe is connected to the drain outlet. The recovery system includes a second filter screen for filtering wastewater discharged from the drain pipe, a water tank for collecting the filtered water from the second filter screen, and a booster pump for pressurizing and transporting the water in the water tank to the inlet pipeline of the booster pump.

2. The booster pump filtration and recovery device as described in claim 1, characterized in that: The drain valve is a normally closed solenoid valve, and the drain valve is electrically connected to the time control switch.

3. The booster pump filtration and recovery device as described in claim 1, characterized in that: The first filter screen is cylindrical, with filter holes distributed at the upper end to separate the straight pipe from the front and back, and the lower end facing the sewage outlet and open, and an opening on the side facing the upstream water flow.

4. The booster pump filtration and recovery device as described in claim 3, characterized in that: The upper end of the first filter screen is inserted into the groove at the intersection of the straight and inclined pipes, and the lower end is inserted into the groove inside the end cap.

5. The booster pump filtration and recovery device as described in claim 3, characterized in that: There is a gap between the side of the first filter screen and the inner wall of the inclined tube.

6. The booster pump filtration and recovery device as described in claim 1, characterized in that: The water tank is equipped with a high level switch and a low level switch, and the booster pump is electrically connected to the high level switch and the low level switch respectively.

7. The booster pump filtration and recovery device as described in claim 1, characterized in that: A check valve is installed on the outlet pipeline of the booster pump.

8. The booster pump filtration and recovery device as described in claim 1, characterized in that: The booster pump inlet is equipped with a third filter screen, which has a higher mesh size than the second filter screen.

9. The booster pump filtration and recovery device as described in claim 8, characterized in that: The third filter screen is located at the front end of the inlet pipe of the booster pump and is submerged at the bottom of the water tank.

10. The booster pump filtration and recovery device as described in claim 1, characterized in that: The second filter screen is cylindrical, with an open top and a closed bottom, and is equipped with filter holes.

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