Intelligent low-temperature fluid electric heating system

A low-temperature fluid and electric heating technology, applied in fluid heaters, heat storage heaters, lighting and heating equipment, etc., can solve problems such as failure to operate, easy freezing of ultra-low temperature media, lack of intelligent control, etc., to achieve equipment operation stable effect

Pending Publication Date: 2020-10-13
CHENGDU CRAER CRYOGENIC EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (2) The ultra-low temperature medium is prone to freezing after entering the heat exchanger, and cannot operate under the working conditions of ultra-low temperature me

Method used

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  • Intelligent low-temperature fluid electric heating system
  • Intelligent low-temperature fluid electric heating system

Examples

Experimental program
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Embodiment 1

[0029] Such as figure 1 , figure 2 As shown, in this embodiment, an intelligent low-temperature fluid electric heating system is specifically provided, including a fixed frame, an electric heating heat exchanger and a PLC control cabinet mounted on the fixed frame, and a PLC controller is also included in the PLC control cabinet , an inlet pipeline is connected to one end of the electric heating heat exchanger, and an automatic regulating valve, a pressure transmitter and a temperature transmitter are sequentially arranged on the inlet pipeline along the flow direction of the low-temperature medium; The other end of the device is connected with an outlet pipeline, and an automatic regulating valve, a pressure transmitter and a temperature transmitter are arranged in sequence along the flow direction of the low-temperature medium on the outlet pipeline, and a heat exchange pipeline is arranged inside the electric heating heat exchanger And through the heat exchange pipeline, ...

Embodiment 2

[0039] On the basis of the intelligent low-temperature fluid electric heating system disclosed in Embodiment 1, in order to further realize proper control of the heating amount during heating, the heating assembly includes multiple sets of mutually independent heating rods, and each group of heating rods runs through Inside the electric heating heat exchanger, to heat the heat exchange medium filled inside the electric heating heat exchanger, each group of heating rods is connected with a relay for on-off control of its circuit, and the control terminals of each relay are respectively connected to The PLC controller is electrically connected to control the action of each relay through the PLC controller, and then each group of heating rods is connected to the corresponding power supply circuit. Since each group of heating rods is independent of each other, the PLC controller can Each heating rod is controlled separately through each relay to adjust the number of heating rods co...

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PUM

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Abstract

The invention discloses an intelligent low-temperature fluid electric heating system, and belongs to the technical field of low-temperature fluid heating. The system comprises an electric heating heatexchanger and further comprises a PLC, wherein an inlet pipeline and an outlet pipeline of the electric heating heat exchanger are each provided with an automatic regulating valve, a pressure transmitter and a temperature transmitter, a heating assembly is arranged in the electric heating heat exchanger, and the electric heating heat exchanger is filled with a heat exchange medium and carried outheating through the heating assembly. The automatic regulating valves, the pressure transmitters, the temperature transmitters and the heating assembly are respectively and electrically connected with the PLC so as to achieve the purpose of realizing intelligent operation of the heating system under the condition of unmanned operation.

Description

technical field [0001] The invention belongs to the technical field of low-temperature fluid heating, and in particular relates to an intelligent low-temperature fluid electric heating system. Background technique [0002] Cryogenic fluids generally refer to fluids whose boiling point is lower than 120 Kelvin (abbreviated as K), that is, about minus 153 degrees Celsius. Cryogenic fluid heating is different from conventional fluid heating: on the one hand, the heating amount must be strictly controlled, and the heat provided by the heater and the heat absorbed by the low-temperature fluid must be accurately calculated; on the other hand, the heating must be uniform, otherwise it is easy to appear low-temperature fluid Vaporization, danger of overpressurization. [0003] The existing low-temperature fluid heating equipment is mainly used for the gas supply of hydrogen-oxygen fuel cells such as vehicles, ships, and submersibles, the gas supply of vehicle-mounted LNG gas engine...

Claims

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Application Information

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IPC IPC(8): F24H7/02F24H9/00F24H9/18F24H9/20
CPCF24H7/0233F24H9/0005F24H9/1818F24H9/2021
Inventor 吴长宇邹波匡龙洋明长友杨志林
Owner CHENGDU CRAER CRYOGENIC EQUIP
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