Auxiliary protection method for slurry pipeline electric valve
A technology for electric valves and pipelines, which is applied in the direction of valve operation/release devices, valve details, valve devices, etc. It can solve problems such as economic losses, high pressure in slurry pipelines, threats, etc., to ensure production safety, eliminate material overflow, The effect of improving usage efficiency
Active Publication Date: 2012-11-07
YUXI DAHONGSHAN MINING +1
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Problems solved by technology
[0003] Because the pressure of the slurry pipeline is too high when the medium is transported, it takes a long time for the valve to open and close. Although each valve is equipped with a limit switch in the open and closed positions, if the limit switch is damaged, when the valve In the process of opening and closing, if the limit switch signal is not detected or due to other failures, the valve will continue to be opened or closed, resulting in damage to the valve
[0004] This will not only affect production, but if it causes ore leakage, it will not only cause economic losses, but also pollute the environment. What is more serious is that the slurry transportation pipeline is a high-pressure pipeline, and leakage will also pose a certain threat to personal safety.
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[0028] Attached below figure 1 with 2 The present invention will be specifically described.
[0029] Such as figure 1 It is shown that the electric valve of the present invention is installed in the slurry pipeline, and the direction of the medium in the pipeline is changed by continuously switching the electric valve. The electric valve is controlled by a control box for switch control and protection control, and the control box is provided with a valve opening button 4, a valve closing button 5, a stop button 6, a time relay 7, a time relay indicator light 8, and an open position indicator light 9 And close the indicator light 10 in place. In addition, a double-throw limit switch 3 is provided on the open position and close position of the electric valve, which is used for limit protection of the electric valve when the valve opening operation or valve closing operation of the electric valve is completed, preventing its opening and closing. Damage to the valve by operati...
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The invention provides an auxiliary protection method for a slurry pipeline electric valve. In the method, a time relay starts timing when an operator operates an electric valve through a valve opening or closing button; after the time relay finishes timing, a time relay indicating lamp is electrified and flickers to inform the operator of the completion of the valve opening or closing action of the electric valve; the state of a switch-on indicating lamp or a switch-off indicating lamp is required to be noticed; and if the switch-on indicating lamp or the switch-off indicating lamp is not electrified for displaying, the valve opening or closing action is stopped to maintain the electric valve. By adopting the method, effective auxiliary protection can be performed on the electric valve.
Description
technical field [0001] The invention relates to a protection method for an electric valve switch, in particular to an auxiliary protection method for a slurry pipeline electric valve. Background technique [0002] When the slurry pipeline transports the medium, it is necessary to continuously switch the electric valve to change the direction of the medium. [0003] Because the pressure of the slurry pipeline is too high when the medium is transported, it takes a long time for the valve to open and close. Although each valve is equipped with a limit switch in the open and closed positions, if the limit switch is damaged, when the valve In the process of opening and closing, if the limit switch signal is not detected or due to other failures, the valve will continue to be opened or closed, resulting in damage to the valve. [0004] This will not only affect the production, but if it causes ore leakage, it will not only cause economic losses, but also pollute the environment. ...
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IPC IPC(8): F16K31/04F16K37/00
Inventor 安建普光跃潘春雷李金航王健太江林陈庚周传奇
Owner YUXI DAHONGSHAN MINING