Intelligent external transportation pry for fracturing flow-back fluid

Abstract

An intelligent fracturing flow-back fluid output pry is characterized in that an electric valve, a first pressure sensor, a filter and a second pressure sensor are sequentially arranged on an inlet pipeline of an automatic frequency conversion output pump in the fluid flowing direction, and a blow-down valve is connected to the filter; a third pressure sensor and an intelligent meter are sequentially arranged on an outlet pipeline of the automatic frequency conversion efflux pump in the liquid flowing direction, and the intelligent meter, the first pressure sensor, the second pressure sensor and the third pressure sensor are connected with the automatic frequency conversion efflux pump through wires. By means of the automatic frequency conversion efflux pump, the operation frequency can be automatically adjusted according to the actual liquid amount, energy is effectively utilized, the energy utilization rate is improved, manual operation is reduced, operation risks are reduced, and safety is improved. The automatic frequency conversion efflux pump automatically adjusts the running state of the pump according to data collected by the second pressure sensor, the third pressure sensor and the intelligent meter, and the use efficiency of the pump is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying equipment, and in particular relates to an external transport skid. Background Art

[0002] In the process of oil and gas extraction, the treatment of fracturing return fluid is a key link. Traditional fracturing return fluid external transmission devices have some limitations and shortcomings, which are mainly reflected in the following aspects: 1. A fixed-frequency pump is used to treat the return fluid, because the pump cannot automatically adjust its operating speed according to actual needs, which leads to reduced pump efficiency when the liquid volume changes; 2. The monitoring of the device status depends on regular manual inspection and operation, lacks an intelligent adjustment mechanism, and cannot achieve optimal energy utilization under different working conditions, resulting in energy waste; 3. Manual operation of the external transmission device has safety hazards, especially in high-pressure and high-temperature environments, which poses a threat to the safety of operators. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an intelligent external transport skid for fracturing return fluid with high transport efficiency, high energy utilization rate, and safety and reliability.

[0004] The technical solution adopted to solve the above technical problems is: a fracturing return fluid intelligent external transmission skid, wherein an electric valve, a first pressure sensor, a filter, and a second pressure sensor are sequentially arranged on the inlet pipeline of an automatic frequency conversion external transmission pump along the liquid flow direction, and a drain valve is connected to the filter; a third pressure sensor and an intelligent meter are sequentially arranged on the outlet pipeline of the automatic frequency conversion external transmission pump along the liquid flow direction; the intelligent meter, the first pressure sensor, the second pressure sensor, and the third pressure sensor are connected to the automatic frequency conversion external transmission pump through wires.

[0005] As a preferred technical solution, the safety drain port of the automatic variable frequency external transfer pump is connected to the electric valve inlet pipe through a branch pipe, and a safety valve is provided on the safety drain port.

[0006] As a preferred technical solution, a first stop valve is connected in series to the branch pipeline.

[0007] As a preferred technical solution, a second stop valve is provided upstream of the third pressure sensor on the outlet pipeline of the automatic variable frequency export pump.

[0008] The beneficial effects of the utility model are as follows:

[0009] The utility model can automatically adjust the operating frequency according to the actual liquid volume through the automatic variable frequency external delivery pump, effectively utilize energy, improve energy utilization, reduce manual operation, reduce operating risks, and improve safety. The automatic variable frequency external delivery pump automatically adjusts the operating state of the pump according to the data collected by the second pressure sensor, the third pressure sensor and the intelligent meter, thereby improving the use efficiency of the pump.

[0010] The utility model has an automatic protection function, which can automatically trigger a safety valve in an emergency to prevent the pump body from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Among them: storage tank 1, electric valve 2, first pressure sensor 3, filter 4, drain valve 5, first stop valve 6, second pressure sensor 7, automatic variable frequency external pump 8, safety valve 9, second stop valve 10, third pressure sensor 11, intelligent meter 12, liquid storage tank 13. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments.

[0014] exist Figure 1 In the embodiment, the intelligent external transport skid for fracturing return fluid is used to transport the fracturing return fluid from the storage tank 1 to the liquid storage tank 13. The intelligent external transport skid for fracturing return fluid includes an electric valve 2, a first pressure sensor 3, a filter 4, a drain valve 5, a first stop valve 6, a second pressure sensor 7, an automatic variable frequency external transport pump 8, a safety valve 9, a second stop valve 10, a third pressure sensor 11, and an intelligent meter 12.

[0015] An electric valve 2, a first pressure sensor 3, a filter 4, and a second pressure sensor 7 are installed in sequence on the inlet pipeline of the automatic variable frequency external transfer pump 8 along the direction of liquid flow. A drain valve 5 is connected to the filter 4. The first pressure sensor 3 and the second pressure sensor 7 are used to determine whether the filter 4 is blocked. When the data collected by the first pressure sensor 3 is greater than the data collected by the second pressure sensor 7, it is determined that the filter 4 is blocked and sewage treatment is required.

[0016] A second stop valve 10, a third pressure sensor 11, and an intelligent meter 12 are installed in sequence on the outlet pipeline of the automatic variable frequency external transfer pump 8 along the liquid flow direction. The third pressure sensor 11 is used to monitor the output pressure changes, and the intelligent meter 12 is used to monitor the flow changes of the output pipeline in real time.

[0017] The outlet of the automatic variable frequency external transfer pump 8 is connected to a branch pipe through a safety valve 9, the branch pipe is connected to the inlet pipe of the electric valve 2, and a first stop valve 6 is connected in series to the branch pipe. When the pressure of the automatic variable frequency external transfer pump 8 exceeds the set threshold, the safety valve 9 is flushed open, and the discharged liquid flows back to the inlet pipe of the electric valve 2 through the branch pipe.

[0018] The intelligent meter 12, the first pressure sensor 3, the second pressure sensor 7, and the third pressure sensor 11 are connected to the automatic variable frequency external transmission pump 8 through wires.

[0019] The working principle of the utility model is as follows:

[0020] When the data collected by the first pressure sensor 3 is greater than the data collected by the second pressure sensor 7, the electric valve 2 is closed and the filter 4 is drained through the drain valve 5. The second pressure sensor 7 and the third pressure sensor 11 are used to monitor the pressure changes between the input and output of the automatic variable frequency external transmission pump 8. The automatic variable frequency external transmission pump 8 automatically adjusts the operating frequency according to the pressure difference to optimize the performance and efficiency of the pump. At the same time, the automatic variable frequency external transmission pump 8 automatically adjusts the frequency according to the flow changes collected by the intelligent meter 12 and the actual flow requirements to ensure the stability of the external transmission flow.

[0021] When the pressure of the automatic variable frequency external transfer pump 8 exceeds the set threshold, the safety valve 9 is opened, and the discharged liquid flows back to the inlet pipe of the electric valve 2 through the branch pipe. When the pressure data collected by the first pressure sensor 3 is greater than the set threshold, the electric valve 2 is closed and the discharged liquid flows back to the storage tank 1.

Claims

1. An intelligent external transport skid for fracturing flowback fluid, characterized by: An electric valve, a first pressure sensor, a filter, and a second pressure sensor are sequentially arranged on the inlet pipeline of the automatic frequency conversion external transfer pump along the direction of liquid flow, and a drain valve is connected to the filter. A third pressure sensor and an intelligent meter are sequentially arranged on the outlet pipeline of the automatic frequency conversion external transfer pump along the direction of liquid flow. The intelligent meter, the first pressure sensor, the second pressure sensor, and the third pressure sensor are connected to the automatic frequency conversion external transfer pump through wires.

2. The intelligent external transport skid for fracturing flowback fluid according to claim 1 is characterized in that: The outlet of the automatic variable frequency external delivery pump is connected with a branch pipeline through a safety valve, and the branch pipeline is connected with the inlet pipeline of the electric valve.

3. The intelligent external transport skid for fracturing flowback fluid according to claim 2 is characterized in that: The branch pipeline is serially connected with a first stop valve.

4. The intelligent external transport skid for fracturing flowback fluid according to claim 1 is characterized in that: A second stop valve is provided upstream of the third pressure sensor on the outlet pipeline of the automatic variable frequency export pump.

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