Heat exchange system seamless alternation type frequency conversion constant-pressure constant-temperature adjusting system and method

Abstract

The invention discloses a heat exchange system seamless alternation type frequency conversion constant-pressure constant-temperature adjusting system and method. The system comprises a plate heat exchanger, the plate heat exchanger is provided with a heat source input port, a cold source input port, a heat source output port and a cold source output port, the heat source input port is connected with at least two water supply pumps connected in parallel, the front ends of the water supply pumps are provided with a water tank, the front end of the cold source input port is provided with an electric regulating valve and a temperature sensor, each water supply pump is connected to a frequency converter, and the frequency converter and the cold source input port and the heat source output portof the plate heat exchanger are electrically connected to a control cabinet. According to the heat exchange system seamless alternation type frequency conversion constant-pressure constant-temperatureadjusting system and method, since the frequency converter for enabling the water supply pump connection power to be larger than water supply pump operation power is arranged, the rotating speeds ofthe water pumps are controlled in a frequency conversion mode through the control cabinet, constant-pressure water supply stabilization is achieved, meanwhile, the control cabinet can directly controlthe opening of the electric regulating valve, the cold source input quantity is controlled, stable water supply temperature is ensured, and it is ensured that product quality is not affected in the production process.

Description

technical field [0001] The invention relates to the field of heat exchange systems, in particular to a heat exchange system seamless alternate frequency conversion constant pressure constant temperature adjustment system and method. Background technique [0002] In industrial production, the film processing industry, injection molding industry, polyurethane industry, laser printing industry, etc., process cooling and heating have constant temperature and pressure requirements, and in this industrial chain, most of them are three shifts Production is not allowed to stop for 24 hours, constant temperature and pressure need to be provided continuously, and the system needs a stable supply of cold and heat sources. In the existing heat exchange system, if a single pump continues to operate, it will fail. However, if double pumps or multi-pumps are installed, the pressure of the system will become unstable when the water supply pump is switched, and the temperature of the water s...

AI Technical Summary

Problems solved by technology

In the existing heat exchange system, if a single pump continues to operate, it will fail. However, if double pumps or multi-pumps are installed, the pressure of the system will become unstable when the water supply pump is switched, and the temperature of the water supply will also become unstable due to changes in the flow rate. , resulting in a serious impact on product quality during the production process

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