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A hydraulic variable motor speed control system for recovery of natural gas residual pressure energy

A variable motor and speed control system technology, applied in the field of natural gas residual pressure energy recovery and utilization, can solve the problems of high cost, high price, overhaul and other problems, and achieve the effect of high utilization rate

Inactive Publication Date: 2020-12-11
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent documents CN 205064001 U, CN 206129326 U, and CN203892871 U patents use variable-speed gearboxes, but there are the following defects and deficiencies: the price is expensive, and it needs to be overhauled after 5 to 7 years of use, and the cost is high
[0005] Chinese patent documents CN 205064001 U, CN 206129326 U, CN203892871 U, and CN-105927491A patents use a set of power generation recovery devices that can only recover the residual pressure energy in one natural gas pipeline, and cannot centrally recover energy for power generation
And about this hydraulic variable motor speed control system, there is no report yet

Method used

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  • A hydraulic variable motor speed control system for recovery of natural gas residual pressure energy
  • A hydraulic variable motor speed control system for recovery of natural gas residual pressure energy

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Embodiment 1

[0044] Please refer to figure 1 , figure 1 It is a structural block diagram of a closed-type hydraulic variable motor 6 speed regulating system for recovering residual pressure energy of natural gas according to the present invention. A closed hydraulic variable speed motor 6 speed control system for recovering residual pressure energy of natural gas, the closed hydraulic variable speed motor 6 speed control system includes an expander 1, a hydraulic pump 2, an accumulator 5, a variable variable motor 6, Controller 7, natural gas pipeline 14; described expander 1 and hydraulic pump 2 are connected together, and placed in natural gas pipeline 14; The quantity in described natural gas pipeline 14 is at least one, and each natural gas pipeline 14 A matching expander 1 and a hydraulic pump 2 are provided; and each hydraulic pump 2 is connected in parallel; the output end of the hydraulic pump 2 is connected to the one-way valve 3; the output end of the one-way valve 3 A safety v...

Embodiment 2

[0062] Please refer to figure 2 , figure 2 It is a structural block diagram of another open hydraulic variable motor speed regulating system for recovering residual pressure energy of natural gas according to the present invention. This embodiment is basically the same as Embodiment 1, the difference is that the hydraulic variable motor speed control system in Embodiment 1 is a closed structure, while the hydraulic variable motor speed control system in this embodiment is an open structure, that is In this embodiment, the flushing valve 13 and the oil supply device 12 are not provided, and the oil tank 11 is directly connected with the hydraulic pump 2 through the check valve 3, which simplifies the structure of the whole system. Secondly, in this embodiment, the variable motor 6, the controller 7, and the generator 8 form a power frequency power generation unit 16, and there is at least one power frequency power generation unit 16, so that the residual pressure of multiple...

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Abstract

The invention relates to a hydraulic variable motor speed adjusting system for natural gas excess pressure energy recovering. The hydraulic variable motor speed adjusting system comprises an expansionmachine, a hydraulic pump, an energy accumulator, a variable motor, a controller and a natural gas pipeline. The expansion machine and the hydraulic pump are connected together and placed in the natural gas pipeline, the output end of the hydraulic pump is connected with a one-way valve, and a safety valve, the energy accumulator and the variable motor are arranged at the output end of the one-way valve. The safety valve and the energy accumulator are connected in parallel, and the energy accumulator and the variable motor are connected in series. The controller and a generator are arranged on the variable motor, and the output end of the variable motor is provided with an oil cooler, a filter and an oil tank. The hydraulic variable motor speed adjusting system for natural gas excess pressure energy recovering has the advantages that the natural gas excess pressure utilizing rate is high, and the hydraulic variable motor speed adjusting system can be used for centralized recovering ofthe excess pressure of a plurality of natural gas pipelines and centralized transmitting of power frequency alternating currents.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of natural gas residual pressure energy, in particular to a hydraulic variable motor speed regulation system for recovering natural gas residual pressure energy. Background technique [0002] The shale gas "well factory" platform usually has 4 to 8 gas production wells, and the natural gas pressure in the gas production well pipeline can reach up to 100MPa, while the oil and gas treatment plant's incoming pipeline pressure is between 10MPa and 12MPa. In order to ensure the pressure requirements of the oil and gas treatment plant, the high-pressure natural gas is generally decompressed step by step through the pressure reducing valve group. During the decompression process of high-pressure natural gas, a large part of pressure energy will be lost, and all of it will be wasted. Therefore, if effective measures can be taken to centrally recover the residual pressure energy of natura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D15/08F03C1/26
CPCF01D15/08F03C1/002F03C1/26
Inventor 周雄聂磊纪成香冷再寒
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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