The heat exchange unit consists of a heat exchanger, a circulating pump unit, a constant pressure pump unit, a sensing instrument, a control valve, and an automatic control device (frequency conversion cabinet). It is a fully automatic unattended heat exchange equipment developed by our company. Its main components-plate heat exchangers, controllers, inverters, etc. all use international brands. They have the advantages of excellent options, compact structure, high heat exchange efficiency, stable system operation, and convenient construction. They are currently ideal heat exchange equipment. . According to the specifications of the heating system, the heat load of the pipe network, and other related parameters, a reasonable calculation is made by selecting a heat exchanger, a make-up pump, and a circulating pump. Based on the changes in outdoor temperature, secondary water flow, and pipe network pressure, the control curve is reasonably formulated Using PLC intelligent programming control technology, it automatically balances various parameters of the system to achieve the ideal heating state. That is to reduce the power consumption and reduce the loss of the primary heat source. The heat source of the unit is steam hot water of a thermal power plant or boiler. The primary heat source enters the unit's plate heat exchanger from its own pressure, returns to the thermal power plant or boiler room after heat exchange. After the secondary return water (circulating water of heating or air-conditioning system) passes through the filter, it enters the plate heat exchanger through the circulation pump, and is heated by steam or high-temperature water to provide users with hot water. The make-up pump drives the softened water into the system to make up for the lack of water in the system, and maintains the pressure of the system stable through frequency control.
Reasonable multi-system combination, integrating heat exchange system and constant pressure system, without the need for additional high-level water tanks and other constant pressure devices, compact structure, small footprint, convenient maintenance, fully automatic operation; plate heat exchanger Device, small thermal resistance, high thermal efficiency, heat transfer coefficient up to 8000W / ㎡ ℃, and due to the use of a special process, the inside is not easy to scale, disassembly, inspection, cleaning is very convenient; the water pump is automatically switched regularly, extending the water pump Service life; high precision pressure, temperature transmitter and regulating electric valve, high degree of automation, reliable operation, stable control, programmable control technology, intelligent management, easy implementation of various controls, good expansion and network Function, over-temperature, over-pressure, automatic alarm, complete function, no need to stay on duty, automatic operation, with manual, automatic function, free operation, both automatic and manual operation, complete equipment protection function, reliable operation, Set multiple working modes to meet different environmental requirements and save energy to the limit.