A high and low temperature thermal oil control system with high temperature control accuracy
A control system, high-precision technology, applied in heating and cooling combinations, refrigerators, refrigeration components, etc., can solve the problem of poor stability of ultra-high temperature and ultra-low temperature control, difficulty in controlling temperature accuracy, and affecting the reaction efficiency and effect of the reactor and other problems, to achieve the effect of high heating efficiency and cooling efficiency, saving equipment space and compact structure
Active Publication Date: 2018-11-02
SUZHOU AODE MACHINERY
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Problems solved by technology
In the prior art, a separate heating and cooling system is used to control the temperature, and the manual switching method of the two is used for cold and heat exchange. The accuracy of the temperature control is difficult to meet the requirements, which often affects the reaction efficiency and effect in the reactor; and Poor control stability for ultra-high temperature and ultra-low temperature
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Embodiment
[0032] Please refer to figure 1 , this embodiment is a high and low temperature hot oil control system with high temperature control accuracy, which includes an expansion oil tank 1, a pump 2, an evaporator 3, a cooling device 4, a heating device 5, an oil outlet pipeline 6, and an oil return pipeline 7. Cooling water outlet 8, cooling water inlet 9, PLC control device 10 and temperature controller 11.
[0033] The cooling water outlet 8 and the cooling water inlet 9 constitute a cooling water system.
[0034] The expansion oil tank 1 is communicated with the pump 2 through pipelines. A liquid level switch (not shown in the figure) is arranged inside the expansion oil tank 1 , and the liquid level switch is electrically connected with the PLC control device 10 .
[0035] An air collector 12 is arranged between the pump 2 and the oil return pipeline 7 . An exhaust solenoid valve 13 is arranged between the gas collector 12 and the expansion oil tank 1 , and the exhaust soleno...
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The invention discloses a high and low temperature hot oil control system with high temperature control accuracy, which includes an oil outlet pipeline, an oil return pipeline, a cooling device, a heating device, a pump, a cooling water system, a PLC control device, and a temperature controller. The device and cooling device are combined and connected to the oil outlet pipeline. The pump is connected to the oil return pipeline, heating device and cooling device. The pump is connected to the cooling device and heating device after being divided by the first electric three-way valve. A second temperature sensor is provided, a third temperature sensor is provided on the oil return pipeline, the PLC control device is electrically connected with the third temperature sensor, the pump, the first electric three-way valve and the temperature controller, and the temperature controller is connected with the third temperature sensor. The two temperature sensors are electrically connected. The invention has high temperature control precision, high heating efficiency and cooling efficiency, can realize temperature adjustment in the range of -30°C to 200°C in a short time, and can control the precision to ±0.1°C.
Description
【Technical field】 [0001] The invention belongs to the technical field of temperature control, in particular to a high and low temperature thermal oil control system with high temperature control accuracy. 【Background technique】 [0002] Temperature control is widely used in modern manufacturing, such as in the field of pharmaceutical and cosmetic reactor temperature control. In the prior art, a separate heating and cooling system is used to control the temperature, and the manual switching method of the two is used for cold and heat exchange. The accuracy of the temperature control is difficult to meet the requirements, which often affects the reaction efficiency and effect in the reactor; and Poor control stability for ultra-high temperature and ultra-low temperature. [0003] Therefore, it is necessary to provide a new high and low temperature thermal oil control system with high temperature control accuracy to solve the above problems. 【Content of invention】 [0004] ...
Claims
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IPC IPC(8): F25B29/00F25B41/04F25B41/06F25B49/02F25B41/20F25B41/31
CPCF25B29/003F25B49/02F25B2700/21F25B2400/21F25B2500/18F25B2400/01F25B41/385F25B41/20F25B41/31Y02B30/70
Inventor 周定山祝新生廖晓军姜定坤
Owner SUZHOU AODE MACHINERY