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Symmetrically-arranged high-speed double-turbine distributed excess pressure power generation system

A technology of symmetrical arrangement and residual pressure power generation, which is applied in combined engines, steam engine installations, machines/engines, etc. Solve problems such as axial force, and achieve the effect of improving output power, enhancing adaptability, and increasing steam flow

Pending Publication Date: 2021-01-29
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a reasonable structure design, low output power for single-stage radial turbo expander, low energy recovery efficiency for high pressure differential energy supply system and inability to solve the problem during operation. Axial force problem, a symmetrically arranged high-speed twin-turbine distributed residual pressure power generation system is proposed

Method used

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  • Symmetrically-arranged high-speed double-turbine distributed excess pressure power generation system

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Embodiment 1

[0021] High-speed twin-turbine distributed residual pressure power generation system symmetrically arranged in parallel operation mode.

[0022] This embodiment discloses a symmetrically arranged high-speed twin-turbine distributed residual pressure power generation system (hereinafter referred to as "the system") under the parallel operation mode. To solve the problem of axial force, a symmetrically arranged high-speed twin-turbo expander structure is designed.

[0023] see figure 1 , figure 2 , the system includes No. 1 isolation valve 2, flow distribution valve 3, No. 2 isolation valve 4, No. 2 three-way switching valve 5, high-speed permanent magnet motor 6, No. 2 turbo expander 8, No. 1 turbo expander 9, and No. 1 No. 3-way switching valve 10, safety valve 12 and bypass isolation valve 13; No. 1 turbo expander 9 and No. 2 turbo expander 8 are antisymmetrically arranged, and high-speed permanent magnet motor 6 is arranged between No. 1 turbo expander 9 and No. 2 turbo e...

Embodiment 2

[0036] High-speed twin-turbine distributed residual pressure power generation system symmetrically arranged in series operation mode.

[0037] This embodiment discloses a symmetrically arranged high-speed twin-turbine distributed residual pressure power generation system (hereinafter referred to as "the system") under the series operation mode. The supply and demand mismatch system has low energy recovery efficiency and cannot solve the problem of axial force during operation, especially for high-pressure steam inlet pipeline 1 with high steam quality and large pressure difference operating conditions.

[0038] see figure 1 , image 3, the system includes No. 1 isolation valve 2, flow distribution valve 3, No. 2 isolation valve 4, No. 2 three-way switching valve 5, high-speed permanent magnet motor 6, No. 2 turbo expander 8, No. 1 turbo expander 9, and No. 1 No. 3-way switching valve 10, safety valve 12 and bypass isolation valve 13; No. 1 turbo expander 9 and No. 2 turbo ex...

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Abstract

The invention discloses a symmetrically-arranged high-speed double-turbine distributed excess pressure power generation system, and belongs to the field of distributed excess pressure power generation. The excess pressure power generation system comprises a first isolation valve, a flow distribution valve, a second isolation valve, a second three-way switching valve, a high-speed permanent magnetmotor, a second turbo-expander, a first turbo-expander, a first three-way switching valve, a safety valve and a bypass isolation valve, the first turbo-expander and the second turbo-expander are oppositely and symmetrically arranged, and the high-speed permanent magnet motor is arranged between the first turbo-expander and the second turbo-expander. Through the symmetrically arranged double-turbine structure, the balance of the axial force of a high-speed bearing is realized, the flux of a working medium is increased, and the power output of the system is improved; and through switching of theisolation valve and the three-way switching valve, series operation and parallel operation of the double turbo-expanders are achieved, and the system has better adaptability to scenes with high steamquality and large pressure difference.

Description

technical field [0001] The invention relates to the field of distributed residual pressure power generation, in particular to a symmetrically arranged high-speed twin-turbine distributed residual pressure power generation system. Background technique [0002] With the increasing pressure of energy conservation and environmental protection, small-scale decentralized low-efficiency and high-pollution industrial small boilers are gradually replaced by centralized district heating systems, but usually face the problem of mismatching steam supply and demand parameters, resulting in energy shortage Huge waste. At present, the temperature and pressure reduction device is the most widely used method to solve the problem of mismatching supply and demand parameters, but this method causes steam exergy loss and wastes the working ability of steam. The patent application with publication number CN 110118106 A proposes a A distributed residual pressure power generation system and workin...

Claims

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Application Information

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IPC IPC(8): F01K7/16F01K17/02F01D15/10F01D13/02
CPCF01K7/16F01K7/165F01K17/02F01D15/10F01D13/02
Inventor 罗城鑫周宇昊张海珍林达王明晓柯冬冬李焕龙
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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