District heat supply mixed flow tank based on turbulent flow structure optimization

By installing a turbulence-disrupting component inside the mixing tank to block the straight flow of cold water and forcibly deflect and cut it, the problem of thermal stratification in the mixing tank is solved, thus achieving uniformity of outlet temperature and stability of the heating system.

CN122149009APending Publication Date: 2026-06-05NORTHEAST FORESTRY UNIV
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Patent Information

Application Number
CN202610498264.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-15
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing mixing tanks are prone to thermal stratification during operation, which prevents hot and cold water from mixing fully, resulting in a "hot on top and cold on the bottom" pattern. This causes a large temperature difference at the outlet, affecting the balance and safety of the heating system.

Method used

First and second turbulence components are installed inside the mixing tank. The first component blocks the straight channel of cold water to the bottom and induces it to the middle and upper part. The second component performs forced turning and cutting disturbance. The thermal stratification is eliminated through the combined turbulence structure optimization.

Benefits of technology

It significantly improves the uniformity of water outlet temperature, reduces system energy consumption, and ensures the stable operation and heating quality of the heating system.

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Abstract

The invention belongs to the technical field of heat supply equipment, and provides a district heat supply mixed flow tank based on turbulent flow structure optimization, which comprises a first turbulent flow component and a second turbulent flow component which are arranged in a tank body along the water flow direction, the first turbulent flow component is located behind the low-temperature water inlet and the high-temperature water inlet and used for blocking a channel for cold water to go straight close to the bottom and actively inducing the cold water to the middle or the upper portion of the tank body. The second turbulent flow components are located in front of the medium-temperature water outlets correspondingly and used for conducting forced turning and cutting disturbance on the mixed fluid about to flow out, and heat deviation homogenization of the mixed fluid is achieved. The mixed flow tank is used for hydraulic decoupling and heat mixing of a primary loop and a secondary loop of a heat supply network, the heat stratification phenomenon in the tank is eliminated by additionally arranging and optimizing the internal turbulent flow structure, and then the temperature uniformity of the water outlet is improved.
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