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Condensing and pumping and backpressure integrated system based on backpressure heating technique and application thereof

A back pressure and technical technology, applied in the field of condensing and pumping back integrated system, can solve the problems of complex operation, high economical operation cost, low unit load rate, etc.

Inactive Publication Date: 2020-02-21
北京国电电力有限公司大连开发区热电厂
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  • Claims
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AI Technical Summary

Problems solved by technology

The load rate of the unit during the non-heating period is not high, and the unit is shut down twice a year to replace the low-pressure cylinder rotor. The operation is complicated, a lot of manpower and material resources are wasted, and the economical operation cost is high
At present, there is no report on the condensing-pumping-back integrated system and its application based on back-pressure heating technology

Method used

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  • Condensing and pumping and backpressure integrated system based on backpressure heating technique and application thereof

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Embodiment Construction

[0016] The present invention provides a condensing and pumping integrated system based on back pressure heating technology and its application. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] The present invention provides a condensing-pumping-back integrated system based on back pressure heating technology, such as figure 1 As shown, it includes a medium pressure cylinder 1 and a low pressure cylinder 3, wherein the medium pressure cylinder 1 communicates with the low pressure cylinder 3 through the first pipeline 2; the medium pressure cylinder 1 communicates with the high temperature heat source heater 5 through the second pipeline 4 The low-pressure cylinder 3 communicates with the low-tempera...

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Abstract

The invention discloses a condensing and pumping and backpressure integrated system based on a backpressure heating technique and an application thereof. An intermediate pressure cylinder communicateswith a low pressure cylinder through a first pipeline; the intermediate pressure cylinder communicates with a high temperature heat source heater through a second pipeline; and the low pressure cylinder communicates with a low temperature heat source heater through a third pipeline, a waterway of a heat network circulating water supply system passes through the high temperature heat source heaterand the low temperature heat source heater in sequence, and water in the waterway circularly flows from the low temperature heat source heater to the high temperature heat source heater. According tothe change of operating conditions such as the increase of the exhaust temperature and the swelling amount of the low pressure cylinder, high operating pressure of heat network circulating cooling water of a condenser and the like in a high backpressure operating mode of a steam turbine, a condenser body is redesigned, the condition of replacing a low pressure cylinder rotor twice during shutdowneach year is avoided, a novel scheme of the low pressure cylinder rotor which is suitable within a wide operating backpressure range in winter and summer is adopted, and the low pressure rotor does not need to be replaced after the system operated.

Description

technical field [0001] The invention relates to the field of heating energy-saving upgrading and transformation, in particular to a condensing-pumping-back integrated system based on back-pressure heating technology and its application. Background technique [0002] At present, the domestic high back pressure heating transformation generally adopts the dual-rotor interchange scheme, that is, the low-pressure rotor suitable for high back pressure operation is used during the heating period, and the rotor for pure condensing operation is replaced during the non-heating period. The load rate of the unit during the non-heating period is not high, and the unit is shut down twice a year to replace the low-pressure cylinder rotor. The operation is complicated, a lot of manpower and material resources are wasted, and the economical operation cost is high. At present, there is no report on the condensing-pumping-back integrated system and its application based on the back-pressure he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/40F01K7/38F01K17/02F01K9/00F01D5/06F01D5/14F24D3/02
CPCF01D5/06F01D5/147F01K7/38F01K7/40F01K9/00F01K17/02F24D3/02
Inventor 周国强孙磊张良赵树龙孙显明郑鸿志
Owner 北京国电电力有限公司大连开发区热电厂
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