Control method and system of natural gas heating electronic expansion valve
A technology of electronic expansion valve and control method, which is applied in heat pumps, refrigerators, refrigeration components, etc., can solve the problems of low heat exchange capacity and waste of resources, and achieve the effects of reducing energy consumption, reducing heat loss, and low energy consumption
Pending Publication Date: 2021-12-10
益鹏智能系统科技(上海)有限公司
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Problems solved by technology
[0005] In order to solve the problem of low heat exchange capacity in existing natural gas systems, which may cause waste of resources, this application provides a control method and system for natural gas heating electronic expansion valves
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[0060] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0061] Embodiments of a control method and system for a natural gas heating electronic expansion valve of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0062] An embodiment of the present application discloses a control system of an electronic expansion valve for natural gas heating.
[0063] refer to figure 1 , a control system of an electronic expansion valve for natural gas heating, comprising an electronic expansion valve 3 and a compressor 4, wherein the electronic expansion valve 3 and the compressor 4 cooperate with each other through frequency conversion and speed regulation. The outlet of the compressor 4 is connected with a condenser 5 , and the inlet...
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The invention discloses a control method and system of a natural gas heating electronic expansion valve, and belongs to the technical field of electronic expansion valves. According to the technical scheme, the control method is characterized by comprising the following steps that an outdoor temperature value is obtained, and a preset temperature value is set in advance; the outdoor temperature value is compared with the preset temperature value, and whether the outdoor temperature value is smaller than the preset temperature value or not is judged; and when the outdoor temperature value is smaller than the preset temperature value, the electronic expansion valve is controlled to be opened, and the electronic expansion valve is matched with a compressor in variable-frequency speed regulation. The control method and system have the effects that whether the temperature outside a pipeline is too low or not is judged through detection of the temperature outside the pipeline, when the temperature is low, the frosting phenomenon exists, the electronic expansion valve is opened, at the moment, the compressor rotates at a high speed, a refrigerant circulates at a large flow, defrosting is performed through exhaust heat of the compressor, the time of the defrosting mode is short, and the energy consumption is low.
Description
technical field [0001] The invention relates to the field of electronic expansion valves, in particular to a control method and system for an electronic expansion valve for natural gas heating. Background technique [0002] Natural gas pipeline refers to the pipeline that transports natural gas from mining sites or processing plants to urban gas distribution centers or industrial enterprise users, also known as gas transmission pipelines. The use of natural gas pipelines to transport natural gas is a way to transport large quantities of natural gas on land. The gasification of natural gas from liquid needs to absorb a large amount of heat. The violent phase change in the pipeline will cause the cooling and frosting of water vapor outside the pipeline. The frosting in the main pipeline will block the valve and cause gas cut-off. Therefore, general natural gas pipelines are equipped with electric heaters. [0003] Existing electric heaters for natural gas pipelines include ho...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F25B30/02F25B41/34F25B49/02
CPCF25B30/02F25B41/34F25B49/02Y02B30/70
Inventor 李文峰
Owner 益鹏智能系统科技(上海)有限公司