Flash liquid level automatic control device
A liquid level automatic control and liquid level control technology, which is applied in the direction of liquid level control, non-electric variable control, control/regulation system, etc., can solve the problems of frequent liquid level fluctuations, poor stability of liquid level control, and high investment costs
Inactive Publication Date: 2016-06-22
HUANGHE S & T COLLEGE
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Problems solved by technology
However, on the one hand, this liquid level interlocking self-control method has high investment costs, and on the other hand, it is subject to the stability of the liquid level gauge and pressure regulating valve, which is easy to cause the automatic liquid level of the flasher when the liquid level detection is inaccurate and the adjustment fails. The control device is empty or full, so that the liquid level fluctuates frequently within a certain range, and the stability of liquid level control is poor
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[0011] The embodiment of flash evaporator liquid level automatic control device of the present invention: as figure 1 As shown, the flash evaporator liquid level automatic control device is suitable for utilizing high-temperature and high-pressure condensed water discharged from heat exchange equipment in the technical fields such as chemical industry, metallurgy, and petroleum. The control device, while the liquid level automatic control device is composed of a drainage tube 4, a differential pressure liquid level control valve 5 and an air pressure conduction tube 6. Wherein the drainage pipe 4 is composed of a vertically inclined standpipe section, a horizontally arranged flat pipe section, an elbow section transitionally connected between the standpipe section and the flat pipe section, and the standpipe section is assembled in the flash tank body 1, so that the vertical pipe section The nozzle at the lower end is the entrance of the drainage pipe 4 inserted into the flash...
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The invention discloses an automatic liquid level control device for a flash evaporator. The automatic liquid level control device on the liquid level control device includes a differential pressure liquid level control valve, and the differential pressure liquid level control valve has a top air chamber connected to a flash tank body through an air pressure transmission pipe. The control port, the liquid inlet at the height corresponding to the preset liquid level on the flash tank. When the liquid level in the flash tank is not higher than the liquid inlet position of the differential pressure liquid level control valve, the differential pressure liquid level control valve is closed and the outlet of the drainage pipe is sealed; when the liquid level in the flash tank is higher than When the liquid inlet of the differential pressure liquid level control valve is at the liquid inlet position, the differential pressure liquid level control valve is opened, and the liquid in the flash tank is discharged from the drainage pipe to the downstream pipeline; When the liquid port is at the same height position, the differential pressure liquid level control valve will be closed again at this time, so that the liquid level in the flash tank is maintained at the corresponding position of the liquid inlet of the differential pressure liquid level control valve, so as to realize the control of the flash tank. The effect of stable and reliable adjustment of the fluid level in the body.
Description
technical field [0001] The invention relates to an automatic control device for liquid level of a flash evaporator. Background technique [0002] At present, in the chemical industry, metallurgy and other industries, the condensed water discharged from the heater contains a lot of heat due to its high temperature, so it needs to enter the flash evaporator liquid level automatic control device for flash evaporation, and the flash evaporated secondary steam enters a suitable place for use , making full use of the heat energy of high-temperature condensed water, the traditional flash evaporator liquid level automatic control device uses a liquid level gauge to detect the liquid level, and the regulating valve controls the outlet water flow to control the liquid level in the flash evaporator liquid level automatic control device, and the liquid level gauge will be based on the Measure the height of the liquid level to control the switching action of the regulating valve, so that...
Claims
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IPC IPC(8): G05D9/04
Inventor 李慧普海宝张文广胡瑞华张军
Owner HUANGHE S & T COLLEGE