Automatic water supply device of low-pressure pipeline
A technology of automatic water supply device and low-pressure pipeline, applied in the direction of automatic disconnection emergency protection device, circuit device, emergency protection circuit device, etc., can solve the problems of unstable water pressure, complex structure, high cost, etc., and achieve stable water pressure, The effect of good control effect and simple structure
Active Publication Date: 2018-02-23
江苏海棣自控科技有限公司
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Problems solved by technology
[0002] At present, the low-pressure pipeline water supply device used in residential or farmland irrigation, the valve water pump used in the process of pumping or discharging water, may easily cause water pressure instability due to environmental influences, and the liquid may flow back under certain circumstances. Solving this problem currently requires Use large-scale pipeline water pressure control system for real-time monitoring, and control the switch of the water pump to compensate the water pressure, but the structure of this system is usually complicated and the cost is high, so it cannot be widely used
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[0016] Such as Figures 1 to 3 As shown, the low-pressure pipeline automatic water supply device of the present invention includes a water pump D1, a pressure relay YLJ1, an AC contactor CJ1, a time relay SJ1, fuses RT1, RT2, and a circuit breaker DZ1, wherein:
[0017] The normally closed contact of pressure relay YLJ1 is TLJ1.1;
[0018] The coil of AC contactor CJ1 is CJ1.1, and the normally open contacts are CJ1.2 and CJ1.3;
[0019] The coil of the time relay SJ1 is SJ1.1, and the normally closed contact is SJ1.2;
[0020] The main circuit structure of the water pump D1 is as follows: the inlet terminal of the circuit breaker DZ1 is connected to the three-phase AC power supply, and the outlet terminal of the circuit breaker DZ1 is connected in series with the normally open contact CJ1.3 and then connected to the power terminal of the water pump D1;
[0021] The control circuit structure of the water pump D1 is as follows: one end of the fuse RT1 is connected to the live...
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The invention discloses an automatic water supply device of a low-pressure pipeline, and belongs to the technical field of automatic water supply devices of low-pressure pipelines. The technical purpose to be achieved is to provide the automatic water supply device, which is simple in structure and can control and maintain the water pressure, of the low-pressure pipeline. In order to achieve the technical purpose, by adopting the technical scheme, one end of a fuse RT1 is connected with the control circuit power live wire end L, the other end of the fuse RT1 is connected with one end of a normally-closed contact SJ1.2 after being connected with one end of a normally-closed contact TLJ1.1 in parallel, the other end of the normally-closed contact TLJ1.1 is connected with the control circuitpower null line N after being sequentially connected with a coil CJ1.1 and a fuse RT2 in series, and the other end of the normally-closed contact SJ1.2 is connected with a connecting wire between thenormally-closed contact TLJ1.1 and the coil CJ1.1 after being connected with a normally-opened contact CJ1.2 in series; a coil SJ1.1 is connected to the two ends of the coil CJ1.1 in parallel; a checkvalve NZ is arranged between a water pump D1 and a pressure relay YLJ1. The device is installed on the low-pressure water delivery pipeline of the water pump and applied to the low-pressure water delivery pipeline of the water pump.
Description
technical field [0001] The invention relates to an automatic water supply device for low-pressure pipelines, belonging to the technical field of automatic water supply devices for low-pressure pipelines. Background technique [0002] At present, the low-pressure pipeline water supply device used in residential or farmland irrigation, the valve water pump used in the process of pumping or discharging water, may easily cause water pressure instability due to environmental influences, and the liquid may flow back under certain circumstances. Solving this problem currently requires A large-scale pipeline water pressure control system is used to monitor in real time and control the switch of the water pump to compensate the water pressure. However, the structure of this system is usually complicated and the cost is high, so it cannot be widely used. Contents of the invention [0003] The present invention overcomes the deficiencies in the prior art, and the technical problem to...
Claims
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IPC IPC(8): H02H5/08H02P25/16
CPCH02H5/08H02P25/16
Inventor 赵树元
Owner 江苏海棣自控科技有限公司