Secondary network balancing method based on computer simulation adjustment

A computer simulation and balancing technology, applied in control/regulation systems, instruments, simulators, etc., can solve problems such as unbalanced secondary pipe network, unbalanced flow transmission and distribution, and increased power consumption, so as to improve the balance of the secondary network level, reducing adjustment workload, and reducing the effect of operating flow

Active Publication Date: 2019-09-17
大连海心信息工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the energy-saving transformation of the heating system is mainly aimed at the primary pipe network, that is, the unattended transformation of the heat exchange station, and rarely involves the secondary pipe network, which leads to the extremely common phenomenon of hydraulic imbalance in the secondary pipe network. The resulting ineffective heat supply is currently the The biggest problem of excessive energy consumption, the loss accounts for about 20% of the heat supply
At the same time, due to the imbalance of the secondary pipe network, the intelligent production system cannot fully exert the energy-saving effect
[0003] The hydraulic imbalance of the secondary network is mainly manifested in the unbalanced flow transmission and distribution of each loop, resulting in uneven room temperature of users, high room temperature of near-end users, excessive heatin

Method used

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  • Secondary network balancing method based on computer simulation adjustment
  • Secondary network balancing method based on computer simulation adjustment
  • Secondary network balancing method based on computer simulation adjustment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] Example 1

[0046] A two-network balance method based on computer simulation adjustment, the steps are as follows:

[0047] S1. Draw a plan of the secondary pipe network of the heating system, determine the heating area of ​​each household branch, and establish a secondary network system model;

[0048] S2, using the hydraulic analysis system to obtain the flow rate of each pipe section and the ideal valve opening through hydraulic calculation;

[0049] Hydraulic calculation is to use hydraulic principles to calculate the flow, pressure drop, pressure difference and other data of each pipe section.

[0050] The ideal opening of the valve refers to the opening of the valve in the ideal state, when the two networks are balanced. The debugging is to adjust the valve to the ideal opening. The calculation will give a calculated opening. There is a calculation error with the ideal opening. Make up for cold debugging and hot debugging. There is no specific data range, but the opening ...

Example Embodiment

[0071] Example 2

[0072] The general implementation process of this embodiment:

[0073] First, draw the plan of the secondary pipe network of the heating system, determine the heating area of ​​each household branch, the branch valve form (valve flow characteristic curve), establish the secondary network system model, use the independently developed hydraulic analysis system, and calculate it through hydraulic balance The flow of each pipe section and the ideal opening of the valve are used as the basis for the secondary pipe network commissioning. The initial commissioning of the valve is carried out, and the initial balance is achieved during cold operation before heating. In the initial stage of heating, the valve should be fine-tuned according to the return water temperature of the standpipe of the system and the change of room temperature.

[0074] Specific implementation plan

[0075] 1-Adjustment plan selection

[0076]

[0077]

[0078] There are four commonly used secondary...

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Abstract

The invention discloses a secondary network balancing method based on computer simulation adjustment and belongs to the technical field of secondary networks of heat supply systems. According to the technical scheme, the method comprises the following steps: drawing a secondary pipe network plan of a heat supply system, determining the heat supply area of each entry branch, and establishing a secondary network system model; utilizing a hydraulic analysis system, and obtaining the flow of each pipe section and the ideal opening degree of a valve through hydraulic calculation; carrying out primary debugging of the valve, and achieving initial balance during cold state operation before heat supply; combining water return temperature of a system vertical pipe and the change of the room temperature at the heat supply initial stage to carry out heat state debugging of the valve so as to realize hydraulic balance. The method has the advantages that the balance method is used for solving the phenomenon of hydraulic imbalance of the secondary network of the heat supply system, the hydraulic working condition of the heat supply system is simulated through a computer, in combination with the valve flow characteristic curve, the opening degree of the valve is calculated, and then the hydraulic balance of the secondary network is realized according to the calculated opening degree of the valve.

Description

technical field [0001] The invention belongs to the technical field of the secondary network of the heating system, in particular to a method for balancing the secondary network based on computer simulation adjustment. Background technique [0002] At present, the energy-saving transformation of the heating system is mainly aimed at the primary pipe network, that is, the unattended transformation of the heat exchange station, and rarely involves the secondary pipe network, which leads to the extremely common phenomenon of hydraulic imbalance in the secondary pipe network. The resulting ineffective heat supply is currently the The biggest problem of excessive energy consumption is that the loss accounts for about 20% of the heat supply. At the same time, due to the imbalance of the secondary pipe network, the intelligent production system cannot fully exert the energy-saving effect. [0003] The hydraulic imbalance of the secondary network is mainly manifested in the unbalan...

Claims

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Application Information

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IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 孙圣斌赵岩王天鹏李毅杨华翼
Owner 大连海心信息工程有限公司
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