Control equipment of direct-fired liquid nitrogen evaporator

Abstract

The invention discloses control equipment of a direct-fired liquid nitrogen evaporator. The control equipment comprises a first signal collection module, a second signal collection module, a PID (Proportion Integration Differentiation) controller and a data processor, wherein the first signal collection module is used for obtaining the temperature of a nitrogen discharge pipeline; the PID controller is internally preserved with a preset temperature value and is used for judging whether the temperature of the nitrogen discharge pipeline meets the standard or not and sending a judging result to the data processor; the second signal collection module is used for obtaining on-off states of combustion chambers and sending the on-off states to the data processor; and the data processor is used for calculating the number of the combustion chambers needing to be opened according to the judging result sent by the PID controller and regulating the on-off states of the combustion chambers. According to the control equipment disclosed by the invention, the automatic control of a multi-chamber direct-fired liquid nitrogen evaporator is realized, the requirement on the business ability of an operator of manual regulation is avoided, the control accuracy is increased by monitoring the temperature of the nitrogen discharge pipeline in real time and regulating the working situation of the combustion chambers in time, and the phenomenon of manual control regulation lag is prevented from happening.

Description

technical field [0001] The invention relates to a control device of a direct-fired liquid nitrogen evaporator. Background technique [0002] Evaporator is the core component of liquid nitrogen equipment, its function is to adjust and control the nitrogen discharge temperature. At present, the discharge temperature of nitrogen is mainly adjusted by manual control. During the operation of the equipment, the temperature of the evaporator and the speed of the fan are manually adjusted according to the discharge temperature displayed by the instrument. In this way, the nitrogen discharge temperature adjustment lags behind, and it is difficult to achieve precise temperature control, and the operator needs to have certain experience when manually operating the temperature control valve, the operation process is complicated, and the safety is poor. Once improperly operated, it may lead to fuel injection equipment. In addition, it brings hidden dangers to the personal safety of oper...

AI Technical Summary

Problems solved by technology

In this way, the adjustment of the discharge temperature of nitrogen lags behind, and it is difficult to achieve precise temperature control, and the operator needs to have certain experience when manually operating the temperature control valve, the operation process is complicated, and the safety is poor. In addition, it brings hidden dangers to the personal safety of operators

In addition, the exhaust gas after combustion is directly discharged horizontally, and the discharged gas is easy to pollute the air around the operator, which is harmful to the health of the operator.

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