Novel mining high-power fracturing pump station system

Abstract

The invention discloses a novel mining high-power fracturing pump station system which comprises a clear water tank, a booster pump set, a fracturing pump device, a lubrication unloading device, a stop valve and a flow sensor, the clear water tank is connected with the booster pump set through a pipeline, and the fracturing pump device comprises a plunger pump and a first gear pump; the lubrication unloading device comprises an unloading valve, a lubrication valve block, a plate cooler and a second gear pump; a liquid inlet of the plunger pump is connected with the liquid suction pipe, a liquid inlet pipe is connected with the booster pump set, a liquid outlet of the plunger pump is connected with a first high-pressure pipe, the first high-pressure pipe is communicated to the unloading valve, a liquid outlet end of the unloading valve is connected with a second high-pressure pipe, the second high-pressure pipe is provided with a stop valve, and the flow sensor is arranged on the second high-pressure pipe. The unloading valve is arranged, the unloading valve can be remotely controlled through a program to rapidly release loads, and the safety performance of the system is greatly improved; safety pressure relief of the fracturing pipeline can be controlled by controlling the slow stop valve.

Description

Technical Field

[0001] The invention relates to the technical field of fracturing pumps, and in particular to a novel high-power fracturing pump station system for mining. Background Art

[0002] Energy and coal industry are the pillar industries of the country, and the world's major coal-producing countries attach great importance to the development of coalbed methane. As a high-quality, efficient and clean energy, coalbed methane has a broad prospect for large-scale development and utilization. The development and utilization of coalbed methane also has multiple effects: improving the level of gas accident prevention and having a safety effect; effectively reducing greenhouse gas emissions and producing good environmental effects; as an efficient and clean energy, it produces huge economic benefits. How to mine coalbed methane requires the release process of fracturing and water injection. Due to the high cost of ground fracturing, the underground fracturing process of coal mines is naturally established.

[0003] Hydraulic fracturing first drills a horizontal hole in the rock formation, confirms that it is qualified and sealed, and then injects water into the hole (the conventional method is to use a high-pressure pump with a smaller flow rate, driven by an industrial frequency motor, and drive the pump to supply high-pressure water to the system after hydraulic coupling speed regulation). Generally, the rock formation will be fractured when the pressure is around 30MPa. The pressure is first increased to 5-6MPa, maintained for 10 minutes, and then continued to increase to 30MPa and maintained. The whole process lasts about 1 hour until the fracturing is completed. After the initial fracturing of the rock formation, in order to expand the cracks, it is necessary to quickly replenish water into the cracks at a large flow rate. The pressure of the existing fracturing pump is sufficient, but the pressure is increased too quickly immediately after the fracturing, and the equipment is powered off, which poses certain safety hazards. Summary of the invention

[0004] To this end, the present invention provides a novel high-power fracturing pump station system for mining to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A novel high-power fracturing pump station system for mining comprises a clean water tank, a booster pump group, a fracturing pump device, a lubrication unloading device, a shut-off valve and a flow sensor, wherein the clean water tank is connected to the booster pump group through a pipeline, and the fracturing pump device comprises a plunger pump and a first gear pump; the lubrication unloading device comprises an unloading valve, a lubrication valve block, a plate cooler and a second gear pump; the liquid inlet of the plunger pump is connected to a liquid suction pipe, the liquid inlet pipe is connected to the booster pump group, the liquid outlet of the plunger pump is connected to a first high-pressure pipe, the first high-pressure pipe is connected to the unloading valve, the liquid outlet end of the unloading valve is connected to a second high-pressure pipe, a shut-off valve is provided on the second high-pressure pipe, and the flow sensor is arranged on the second high-pressure pipe.

[0007] Furthermore: the clean water tank, booster pump group, fracturing pump device, lubrication unloading device, cut-off valve and flow sensor are all arranged on the rail car.

[0008] Furthermore: the unloading valve is connected with an unloading pipe, and the unloading pipe is connected to the clean water tank.

[0009] Further: the flow sensor is arranged between the cut-off valve and the unloading valve.

[0010] Furthermore: the lubricating coolant in the plunger pump is connected to the lubrication valve block through two liquid inlet pipes, the first pipeline: a first gear pump is provided on the plunger pump, the first gear pump is connected to the lubrication valve block through the first liquid inlet pipe, and the first gear pump is connected to the lubrication point of the plunger pump through the first connecting pipe; the second pipeline: a second liquid inlet pipe is connected to the lubrication point of the plunger pump, the second liquid inlet pipe is connected to the second gear pump, and the second gear pump is connected to the lubrication valve block through the second connecting pipe.

[0011] Furthermore: a filter is provided in the lubrication valve block.

[0012] Furthermore: the liquid outlet of the lubricating valve block is connected to the plate cooler through the third liquid inlet pipe; the liquid outlet of the plate cooler is divided into two paths, which are respectively connected to the first liquid return pipe and the second liquid return pipe, and the first liquid return pipe and the second liquid return pipe are respectively connected to the two lubrication points of the plunger pump.

[0013] The present invention has the following advantages: the unloading valve provided in the present invention can be remotely controlled by a program to quickly release the load, thereby greatly improving the safety performance of the system; by controlling the slow cut-off valve, the safe pressure relief of the fracturing pipeline can be controlled; the application of multiple valves also increases the overall reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of a new type of high-power fracturing pump station system for mining according to the present invention.

[0015] Figure 2 for Figure 1 Top view of the .

[0016] Figure 3 for Figure 1 Front view of .

[0017] Figure 4 This is an isometric perspective view of a new type of high-power fracturing pump station system for mining according to the present invention.

[0018] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure.

[0019] In the figure: 1. clean water tank; 2. booster pump group; 3. fracturing pump device; 31. plunger pump; 32. first gear pump; 4. lubrication unloading device; 41. unloading valve; 42. lubrication valve block; 43. plate cooler; 44. second gear pump; 5. cut-off valve; 6. flow sensor; 7. suction pipe; 8. first high-pressure pipe; 9. second high-pressure pipe; 10. unloading pipe; 11. second liquid inlet pipe; 12. second connecting pipe; 13. first connecting pipe; 14. first liquid inlet pipe; 15. third liquid inlet pipe; 16. second liquid return pipe; 17. first liquid return pipe. DETAILED DESCRIPTION

[0020] The following is an explanation of the implementation of the present invention by specific specific examples. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. It should be understood that these embodiments are only to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field can make some non-essential improvements and adjustments to the present invention based on the contents of the above invention; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-5 As shown, a new type of high-power fracturing pump station system for mining includes a clean water tank 1, a booster pump group 2, a fracturing pump device 3, a lubrication unloading device 4, a shut-off valve 5 and a flow sensor 6. The clean water tank 1 is connected to the booster pump group 2 through a pipeline, the booster pump group 2 is connected to the fracturing pump device 3 through a suction pipe 7, the liquid outlet of the fracturing pump device 3 is connected to the lubrication unloading device 4 through a first high-pressure pipe 8, the liquid outlet of the lubrication unloading device 4 is provided with a second high-pressure pipe 9, the second high-pressure pipe 9 is provided with a shut-off valve 5, and the flow sensor 6 is arranged on the second high-pressure pipe 9.

[0022] The clean water tank 1, the booster pump unit 2, the fracturing pump device 3, the lubrication unloading device 4, the cut-off valve 5 and the flow sensor 6 are all arranged on the rail car.

[0023] The fracturing pump device 3 includes a plunger pump 31, a first gear pump 32 and other related components, and the lubrication unloading device 4 includes an unloading valve 41, a lubrication valve block 42, a plate cooler 43, a second gear pump 44 and other corresponding components (such as pressure gauges, electronic control systems and other components).

[0024] like Figure 2 As shown, the suction pipe 7 is connected to the liquid inlet of the plunger pump 31, the liquid outlet of the plunger pump 31 is connected to the first high-pressure pipe 8, the first high-pressure pipe 8 is connected to the unloading valve 41, and the liquid outlet end of the unloading valve 41 is connected to the second high-pressure pipe 9.

[0025] The unloading valve 41 is connected to an unloading pipe 10 , and the unloading pipe 10 is connected to the clean water tank 1 .

[0026] During the working process, when the working surface needs to be supplied with liquid, the liquid can be supplied to the working surface through the second high-pressure pipe 9; when the working surface does not need to be supplied with liquid, the unloading valve 41 is unloaded, and the working fluid between the unloading valve 41 and the plunger pump 31 is returned to the clean water tank 1 through the unloading pipe 10; the working fluid between the unloading valve 41 and the working surface is unloaded through the cut-off valve 5.

[0027] The flow sensor 6 is arranged between the cut-off valve 5 and the unloading valve 41 to detect the flow in the pipeline and transmit the real-time flow in the pipeline to the electronic control system.

[0028] The cut-off valve 5 releases the pressure in the main pipeline when the pump station stops working.

[0029] The plunger pump 31 requires lubrication and cooling, and the lubricating coolant in the plunger pump 31 is connected to the lubrication valve block 42 through two liquid inlet pipes. The first pipeline: a first gear pump 32 is installed on the plunger pump 31, and the first gear pump 32 is connected to the lubrication valve block 42 through the first liquid inlet pipe 14, and the first gear pump 32 is connected to the plunger pump 31 through the first connecting pipe 13; the second pipeline: a second liquid inlet pipe 11 is connected to the plunger pump 31, and the second liquid inlet pipe 11 is connected to the second gear pump 44, and the second gear pump 44 is connected to the lubrication valve block 42 through the second connecting pipe 12.

[0030] Furthermore, a filter is provided in the lubrication valve block 42 .

[0031] In addition, the lubrication unloading device 4 is provided with a pressure gauge, which is used to display the pressure in the pipeline.

[0032] The liquid outlet of the lubrication valve block 42 is connected to the plate cooler 43 through the third liquid inlet pipe 15; the liquid outlet of the plate cooler 43 is divided into two paths, which are respectively connected to the first liquid return pipe 17 and the second liquid return pipe 16, and the first liquid return pipe 17 and the second liquid return pipe 16 are respectively connected to the two lubrication points of the plunger pump 31.

[0033] When the present invention is working, liquid is sucked from the clean water tank 1 through the booster pump group 2, and after being filtered, it reaches the plunger pump 31 through the liquid suction pipe 7.

[0034] In order to achieve the best use effect, various valves in this embodiment are electromagnetic valves, and the opening and closing of the invention can be remotely controlled by a program.

[0035] The fracturing pump station system of the present invention can quickly control the loading and unloading of the fracturing pump station system by remotely controlling the unloading valve 41; can control the safe pressure relief of the fracturing pipeline by controlling the slow cut-off valve 5; and can solve the problem of too fast instantaneous pressure increase after the fracturing pump is pressurized by controlling multiple valves, and can effectively prevent power failure of the equipment.

[0036] In addition, in this embodiment, the mine water is filtered by the clean water filter station and then stored in the clean water tank. The liquid level sensor monitors the liquid level in the water tank and transmits the data to the controller, which sends a signal to adjust the opening and closing of the solenoid valve to achieve automatic water replenishment of the water tank. The frequency converter controls the speed of the variable frequency motor to control the system pressure of the pump station according to the working conditions of the fracturing working surface to meet the different requirements for system pressure at various stages of the fracturing process. The monitoring host can monitor the signals of all sensors during the operation of the system, and display the system pressure, flow, water tank level and equipment operation status in real time on the display through the system control software.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel high-power fracturing pump station system for mining, comprising a clean water tank (1), a booster pump group (2), a fracturing pump device (3), a lubrication unloading device (4) and a flow sensor (6), characterized in that: The clean water tank (1) is connected to the booster pump group (2) through a pipeline, and the fracturing pump device (3) comprises a plunger pump (31) and a first gear pump (32); the lubrication unloading device (4) comprises an unloading valve (41), a lubrication valve block (42), a plate cooler (43) and a second gear pump (44); the liquid inlet of the plunger pump (31) is connected to a liquid suction pipe (7), the liquid inlet pipe (7) is connected to the booster pump group (2), the liquid outlet of the plunger pump (31) is connected to a first high-pressure pipe (8), the first high-pressure pipe (8) is connected to the unloading valve (41), the liquid outlet end of the unloading valve (41) is connected to a second high-pressure pipe (9), a cut-off valve (5) is provided on the second high-pressure pipe (9), and a flow sensor (6) is arranged on the second high-pressure pipe (9).

2. A new type of high-power fracturing pump station system for mining according to claim 1, characterized in that: The clean water tank (1), the booster pump group (2), the fracturing pump device (3), the lubrication unloading device (4), the cut-off valve (5) and the flow sensor (6) are all arranged on a rail vehicle.

3. A new type of high-power fracturing pump station system for mining according to claim 1, characterized in that: The unloading valve (41) is connected to an unloading pipe (10), and the unloading pipe (10) is connected to the clean water tank (1).

4. A new type of high-power fracturing pump station system for mining according to claim 1, characterized in that: The flow sensor (6) is arranged between the cut-off valve (5) and the unloading valve (41).

5. A new type of high-power fracturing pump station system for mining according to claim 1, characterized in that: The lubricating coolant in the plunger pump (31) is connected to the lubricating valve block (42) via two liquid inlet pipes, wherein the first pipeline is: a first gear pump (32) is provided on the plunger pump (31), the first gear pump (32) is connected to the lubricating valve block (42) via a first liquid inlet pipe (14), and the first gear pump (32) is connected to the lubrication point of the plunger pump (31) via a first connecting pipe (13); and the second pipeline is: a second liquid inlet pipe (11) is connected to the lubrication point of the plunger pump (31), the second liquid inlet pipe (11) is connected to the second gear pump (44), and the second gear pump (44) is connected to the lubrication valve block (42) via a second connecting pipe (12).

6. A new type of high-power fracturing pump station system for mining according to claim 5, characterized in that: A filter is arranged inside the lubricating valve block (42).

7. A new type of high-power fracturing pump station system for mining according to claim 5, characterized in that: The liquid outlet of the lubricating valve block (42) is connected to the plate cooler (43) via a third liquid inlet pipe (15); the liquid outlet of the plate cooler (43) is divided into two paths, which are respectively connected to a first liquid return pipe (17) and a second liquid return pipe (16); the first liquid return pipe (17) and the second liquid return pipe (16) are respectively connected to two lubrication points of the plunger pump (31).

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