Analysis on the Reasonable Use of Regulating Equipment for Heating Inlet Control

An effective energy-saving heating system is equipped with the appropriate control equipment, such as self-flow, pressure control valve. With the reform of heating metering and charging system, it is very important that the indoor heating system is equipped with the thermostat after the thermostat valve is properly equipped with control equipment. This article discusses the characteristics of the system before and after assembly of the thermostatic valve, and points out that the control equipment equipped with the thermostatic valve is instructive in the design and modification. Heating heat metering charging system reform, the radiator must be installed on the temperature control valve. In the heating operation with the user on the thermostatic valve regulation, district heating network traffic constantly changing. Our heating network becomes a variable-flow operation, the initiative of flow control is in the hands of users, and the heat company will not be able to predict and control the flow changes. In the case of variable flow operation of this thermostatic valve, the regulating control must be correctly installed in order to be effective. Otherwise, the system will not only meet the regulatory requirements, sometimes counter-productive. Regulator Self-operated flow control valve This valve features no external power and depends on the characteristics of fluid flow. When the upstream and / or downstream resistance changes within a certain range, it can be adjusted by the pressure change in the pipe Degrees, so that the basic flow remained unchanged. Balance valve From the adjustment of the basic principles of view, the balance valve is actually a kind of manual valve with opening instructions. In the balance valve upstream and downstream of each installed a pressure hole, used to measure the fluid pressure drop through the valve. When used, measured pressure drop and read the valve opening, you can count the flow through the valve. Its role is equivalent to the control valve and the equivalent orifice flow meter combination, so that each branch of the flow distribution to meet the requirements. When the total circulating pump variable speed operation, each branch of the flow distribution ratio remains unchanged. Self-operated differential pressure control valve Self-operated differential pressure control valve and self-acting flow control valve is similar, it also does not require external power, only depends on the fluid flow characteristics, the upstream and / or downstream resistance within a certain range of changes , It can adjust the opening degree by the change of the pressure in the pipeline so as to make the variation of the pipeline resistance change when the fluid passes the pressure drop of the valve core so as to keep the pressure difference at the inlet of the user basically unchanged. Only three types of conditioning equipment discussed above are discussed, and these are not installed on the heating risers but at the heat entrance of the building. The thermostatic valve is not installed at the constant flow control of the operation of the system run here, said constant flow operation refers to the entire heating network during the heat flow remain unchanged.

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