Large-temperature-difference, long-distance and large-height-difference central heating system

Abstract

The invention discloses a large-temperature-difference, long-distance and large-height-difference central heating system which comprises a steam turbine unit, a relay steam mixing station, a first-stage energy station, a second-stage energy station, a third-stage comprehensive energy station, a fourth-stage energy station and a heat user. A high-parameter steam long-distance conveying pipe network, a low-parameter steam long-distance conveying pipe network and a steam condensation water pipeline are arranged between the steam turbine unit and the relay steam mixing station; a high-parameter steam long-distance conveying pipe network, a high-low pressure parameter steam mixed long-distance conveying pipe network and a steam condensation water pipeline are arranged between the relay steam mixing station and the first-stage energy station; an ultra-high-temperature hot water pipe network and an ultra-low-temperature hot water pipe network are arranged between the first-stage energy station and the second-stage energy station; a zero-level network water supply pipeline and a zero-level network water return pipeline are arranged between the second-level energy station and the third-level comprehensive energy station; and an I-level network water supply pipeline and an I-level network water return pipeline are arranged between the third-level comprehensive energy station and the fourth-level comprehensive energy station. According to the invention, ultra-long-distance long-distance steam / hot water delivery is realized.

Description

technical field [0001] The invention belongs to the technical field of heating engineering, and in particular relates to a central heating system with large temperature difference, long distance and large height difference. Background technique [0002] With the development of heating technology and the implementation of the national 3060 dual-carbon plan, the national energy is facing a new round of resource integration. Regional coal-fired boiler rooms and high-energy-consuming coal-fired power plants are shut down, and large-scale thermal power plants are used to realize cross-regional transmission. Make full use of the role of cogeneration waste heat, and transport it to the heat load area through the long-distance heating pipe network to solve the heating problem of urban residents and the steam consumption problem of industrial enterprises, and realize the simultaneous transportation of steam and water. In recent years, my country's central heating has developed rapidl...

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Problems solved by technology

[0003] The invention provides a central heating system with large temperature difference, long distance and large height difference to solve the problems in the prior art that the measurement accuracy of small flow is not high, the measurement span is large, and the reliability of the flowmeter is not high.

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