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Heat supply network balance control system

A control system and balance technology, applied in the field of heat network balance control system, can solve problems such as interference of outdoor temperature changes, incomplete solution of hydraulic imbalance, etc. average effect

Pending Publication Date: 2018-01-16
烟台华蓝新瑞节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the technical problem of incomplete solution of hydraulic imbalance and interference of outdoor temperature change in the prior art

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a heat network balance control system, such as figure 1 , the heat network balance control system is used in a central heating system, and the central heating system includes at least one heat exchange station and a primary network and a secondary network respectively arranged on both sides of the heat exchange station; the heat network balance control system includes The field device, the first upper computer, and the whole network balancing module connected to the field device and the first upper computer through a communication network and a data bus in turn, and the whole network balancing module is arranged on a server in the second upper computer; image 3 The field equipment includes a first sensor, an electric valve, and a distributed frequency conversion pump set on the primary network, a second sensor, a circulating water pump, and a water replenishment system set on the secondary network, and is used to control the electric valve, the ...

Embodiment 2

[0049] On the basis of Embodiment 1, this embodiment adopts a unique method to further improve the control performance.

[0050] In detail, the completion of the control of the field devices installed in the primary network is to control the electric control valve and the distributed frequency conversion pump according to the automatic calculation method of the target temperature and the individual temperature control method of each thermal station.

[0051] Automatic calculation method of target temperature: The average temperature of the supply and return water in the secondary network of the heat exchange station is automatically calculated by the heat network balance software to realize the control of the electric control valve or the distributed variable frequency pump. This control method is recommended.

[0052] In this implementation, it is assumed that the indoor calculated temperature, outdoor calculated temperature, design water supply temperature, and design return ...

Embodiment 3

[0107] In this embodiment, on the basis of Embodiment 2, the temperature difference between the supply and return water of the secondary network is replaced by the total flow of circulating water controlled by the secondary network: according to the specific conditions of the heating network or heating station, set per square meter per hour The required circulating water flow is based on the load of the heat exchange station. The load is the heating area to determine the set value of the total flow of circulating water in the secondary network of this station. This set value is the control target to realize the circulation of the secondary network. Water pump control.

[0108] The heat load time series of heat sources or heat exchange stations has nonlinear and chaotic characteristics, but the Hurst exponent of the series is between 0.5 and 1.0, so the series has long-term persistence, and the upward / downward trend of the previous time series usually indicates the downward tren...

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Abstract

The invention relates to a heat supply network balance control system. The technical problems that hydraulic imbalance is not completely solved and interfere of outdoor temperature changes exists aresolved. The heat supply network balance control system comprises a site device, a first upper computer and a whole network balance module connected with the site device and the first upper computer sequentially through a communication network and a data bus, and the whole network balance module is arranged in a server located in a second upper computer. The site device comprises a first sensor, anelectric valve, a distributed variable frequency pump, a second sensor, a circulating water pump, a water complementing system and a field controller, wherein the first sensor, the electric valve andthe distributed variable frequency pump are arranged on a primary network; the second sensor, the circulating water pump and the water complementing system are disposed on a secondary network; and the field controller is used for controlling the electric valve, the distributed variable frequency pump and the water complementing system. The first sensor and the second sensor each include an outdoor temperature sensor. Through the technical scheme, the problem is solved well, and the heat supply network balance control system can be used for heat supply network balance control of centralized heating.

Description

technical field [0001] The invention relates to the field of heating systems, in particular to a heating network balance control system. Background technique [0002] Urban central heating is a better way of heating, which has the characteristics of comfort, energy saving, environmental protection and safety. The heating method of urban buildings is increasingly solved by central heating. Due to the continuous expansion of the city scale, the coverage of the urban central heating network is increasing, the number of heat exchange stations is increasing, and the heating area is increasing. During the operation of the central heating network, hydraulic imbalance often occurs, and the flow cannot be distributed to users according to the design requirements, resulting in uneven heating and cooling of users in different locations. The main manifestations of hydraulic imbalance are: unreasonable flow transmission and distribution of each pipe section, resulting in uneven room te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D19/10
Inventor 崔言勇韩传忠孙静王磊孙若榆
Owner 烟台华蓝新瑞节能科技有限公司
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