Balance regulation and control method of heat supply network

A technology of heat balance and balance, applied in heating methods, household heating, household heating, etc., can solve the problems of outdoor temperature change interference, hydraulic imbalance, etc., to improve resistance to external temperature interference, improve heating effect, Good economic and social benefits

Active Publication Date: 2018-02-23
山东和同信息科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the technical problem of incomplete

Method used

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  • Balance regulation and control method of heat supply network
  • Balance regulation and control method of heat supply network
  • Balance regulation and control method of heat supply network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 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 with the field device and the first upper computer sequentially through a communication network and a data bus, and the whole network balancing module is arranged on a server in the second upper computer; as 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 v...

Embodiment 2

[0104] In this embodiment, on the basis of Embodiment 1, the automatic calculation method of the target temperature is replaced by the individual temperature control method of each thermal station.

[0105] Specifically: control the electric regulating valve or the distributed frequency conversion pump according to the actual measured value of the outdoor temperature and the set value library of the outdoor temperature and the return water / supply water temperature submitted by the owner. For an indirectly connected heating system, the adjusted parameter is the average temperature of the supply and return water of the secondary network, and the adjusted parameter is the valve position of the electric control valve of the primary network or the frequency of the distributed frequency conversion pump. When the heating system is disturbed by the outside world and the actual value of the controlled parameter is inconsistent with the given value, the deviation of the adjusted paramete...

Embodiment 3

[0109] In this embodiment, on the basis of Embodiment 1, 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.

[0110] 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 balance regulation and control method of a heat supply network. The balance regulation and control method solves the technical problems that hydraulic disorder can not be thoroughly solved and Disturbance happens caused by the outdoor temperature change. By using and starting a balance regulation and control system of the heat supply network, primary network parameters and secondary network parameters are uploaded to a field device. The primary network parameters include the water temperature of a primary network and the water pressure of the primary network. The secondary network parameters include the water supplying temperature of the secondary network, the water returning temperature of the secondary network and the heat supplying area of the secondary network. A whole net balance module calculates a primary network controlling parameter and a secondary network controlling parameter; and through a data bus and a communication network, the primary networkcontrolling parameter and the secondary network controlling parameter are downloaded to the field device and the technical schemes of controlling of a field device for the primary network and a fielddevice for the secondary network are completed respectively. The problem is solved well and the balance regulation and control method can be used in balance regulation and control of the centralized heat supplying heat supply network.

Description

technical field [0001] The invention relates to the field of heating systems, in particular to a method for regulating and controlling the balance of a heating network. 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 sect...

Claims

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Application Information

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IPC IPC(8): F24D19/10
CPCF24D19/1009F24D2220/02
Inventor 王立志王鑫靳占军于鹏郎平平
Owner 山东和同信息科技股份有限公司
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