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Pressure tank balance pressure photoelectric level sensor to help

 Last Update: 2021-06-09
 Source: Internet
 Author: User

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[ Focus on Chemical Machinery Equipment Network ] Pressure tanks are used in closed water circulation systems to balance water volume and pressure, avoiding frequent opening of safety valves and frequent replenishment of automatic water replenishment valves.
Expansion tank can not only contain the expansion water, but also can play the role of water replenishment tank.
The expansion tank is filled with air and can obtain a larger volume to hold the expansion water.
The high and low pressure expansion tanks can use their own pressure to connect to the voltage stabilization system Replenish water.

Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment

The pressure tank is generally installed between the water distribution pump and the pipe network.
After the water pump is started, it supplies water to the pipe network, and the excess water is stored in the tank, and the water level in the tank rises, the air in the tank is compressed, and the pressure increases accordingly.
When the pressure in the tank reaches the specified upper limit pressure value, the upper limit contact is connected by the index of the electric contact pressure gauge connected to the top of the pipeline and the tank , and a signal is sent to cut off the power supply and stop the pump.
The user continues to use water, the compressed air in the tank presses the water in the tank into the pipe network, the water level drops, and the air pressure in the tank also drops.

Pressure gauge

In addition, when it drops to the required lower limit pressure value, the indicator of the electric contact pressure gauge is connected to the lower limit contact, the relay acts, the motor is connected to the power supply, and the water pump restarts.
Under normal circumstances, the water pump can work without unmanned control, and according to the changes in water consumption, the number of times and working hours of the pump can be adjusted by itself to ensure continuous water supply to the pipe network.

In some places, due to insufficient city tap water supply, the residents of the buildings have difficulty using water.
In order to solve this problem, many residential buildings have installed pressure tanks, which are used in closed water circulation systems to balance water volume and pressure.
The pressure tank balances the water volume and pressure, and the power of the photoelectric liquid level sensor is not small.

sensor

　　It is reported that the photoelectric liquid level sensor is a new type of contact point liquid level measurement and control device developed by using the principle of light reflection and refraction at the interface of two different media.
Its working principle is that the product contains a near-infrared light-emitting diode and a photosensitive receiver.
The light emitted by the LED is guided into the lens on the top of the sensor.

　　When the liquid is immersed in the lens of the photoelectric level switch, the light is refracted into the liquid, so that the receiver cannot receive or can only receive a small amount of light.
The photoelectric level switch senses this change in working conditions, and the receiver can drive the internal electrical switch to activate the external alarm or control circuit.
If there is no liquid, the light emitted by the LED is directly reflected from the lens back to the receiver.
When the tapered end of the sensor is immersed in the liquid, the infrared light will be transmitted out of the tapered surface, and the intensity of the light reaching the detector will be weakened.

　　About the sensor

　　The sensor (is a detection device that can feel the measured information, and can transform the sensed information into electrical signals or other required forms of information output according to certain rules, so as to meet the needs of information transmission, processing, storage, and Display, record and control requirements.

　　The characteristics of sensors include: miniaturization, digitization, intelligence, multi-function, systemization, and networking.
It is the first link to realize automatic detection and automatic control.
The existence and development of sensors give objects the sense of touch, taste and smell, and make objects slowly become alive.

　　Original title: Pressure tank balance pressure photoelectric level sensor to help

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