A multi-stage steam header interconnection and inter- backup industrial park combined heat supply system

Through the multi-level steam header interconnection and backup system, the system achieves second-level steam replenishment response and load mutual assistance, solving the problems of slow steam supply response and unoptimized energy efficiency in existing technologies. This improves the continuity and flexibility of steam supply in the industrial park heating system and optimizes overall energy efficiency.

CN122729409APending Publication Date: 2026-09-11GUONENG (FUZHOU) THERMOELECTRICITY CO LTD
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Patent Information

Application Number
CN202610951594.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-29
Publication Date
2026-09-11

AI Technical Summary

Technical Problem

In existing multi-unit combined heating schemes, the downstream steam replenishment response is slow, there is no horizontal mutual assistance between the same level headers, the priority of steam use cannot be guaranteed under the condition of limited output, and the overall energy efficiency is not optimized. As a result, the steam supply continuity and flexibility of the heating system in industrial parks are insufficient, and the system is complex and has high operation and maintenance costs.

Method used

The system adopts a multi-stage steam header interconnection and backup system, including multi-stage heating steam headers, interconnection and backup pipeline groups, desuperheating and pressure reducing devices and a centralized control unit. It achieves second-level steam replenishment response through emergency bypass connection pipes, realizes load mutual assistance through horizontal pressure equalization connection pipes, and optimizes the power generation rate by allocating steam usage priority and optimizing the thermal power generation rate.

Benefits of technology

It improves the continuity and flexibility of the steam supply system, ensures the stability of downstream steam parameters, optimizes overall energy efficiency, protects the continuous production of key industrial users, and reduces system complexity and operation and maintenance costs.

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Abstract

This invention discloses a multi-stage interconnected and mutually redundant integrated heating system for industrial parks, comprising at least two cogeneration units with different steam parameter levels, multi-stage heating steam headers, desuperheating and pressure reducing devices, interconnected and mutually redundant pipeline groups, and a centralized control unit. The heating steam headers at each level are arranged from high to low steam pressure and receive main steam or extracted steam from the corresponding level of unit, supplying different levels of industrial steam to the industrial park. Adjacent headers are connected in parallel via main connecting pipes and emergency bypass connecting pipes, while headers at the same level are connected via transverse pressure equalization connecting pipes. The centralized control unit controls the regulating valves and desuperheating water regulating valves based on pressure, temperature, flow rate, and steam usage priority. This invention can quickly replenish steam in case of steam source failure or load fluctuations, and allocate steam according to priority when output is limited, improving steam supply continuity and system energy efficiency.
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