The principle of the water inlet valve, what is the working principle of the automatic water inlet v

1. The function and structure of the inlet valve:

1. Product description and use Solenoid water inlet valve is a component used to control the flow direction and flow of water.

2. Product structure and working principle The water inlet valve includes the valve body, coil completion, bracket, water inlet, water outlet, and back pressure.

chambers, diaphragm plate components, etc. The action of the valve is controlled by the energizing and de-energizing of the coil.

Second, the working principle of the inlet valve:

1. Initial state: not powered on. The spool is located on a center hole in the center of the diaphragm plate (the spool cap acts as a seal), and the center hole is sealed at one end of the back pressure chamber.

2. Water inlet: the faucet is turned on and the coil is energized. Water enters the valve chamber through the water inlet and into the back pressure chamber through the side holes of the diaphragm plate; The electromagnetic force generated by the energizing of the coil.

The force required to compress the spring) causes the spool to detach from the central hole located in the center of the diaphragm plate, through which water in the back pressure chamber flows to the outlet. Since the aperture of the central hole is larger than that of the side hole, the water inlet velocity in the back pressure chamber is less than the water outlet velocity, resulting in pressure in the back pressure chamber**. The diaphragm is subjected to greater pressure at one end of the valve chamber than at one end of the back pressure chamber, and the diaphragm is kept away from the valve chamber, allowing the water to flow directly from the inlet to the outlet.

3. Shutdown: The coil is powered off, the magnetic field of the coil disappears, and the valve core returns to the initial position due to the force of the spring to block the central hole in the center of the diaphragm. At this time, the water can only enter the back pressure chamber through the side hole, and the water in the back pressure chamber cannot flow out of the center hole, so that the water pressure in the back pressure chamber rises rapidly.

When the pressure on one end of the back pressure chamber is greater than that at one end of the valve chamber, the diaphragm is pressed against the valve chamber, pressing down on the seat surface and preventing the flow of water from the inlet directly to the outlet.

The automatic water replenishment valve is equipped with a pressure reducing and stabilizing device, the pressure value can be adjusted with the pressure gauge or according to the water replenishment, the valve scale is adjusted and automatically maintains the system pressure after adjustment, when the system pressure is reduced, the water injection is automatically opened, and the mill is automatically closed when the set pressure is reached, so as to avoid the water pressure of the bucket is too high and the system equipment is damaged.

1.The automatic make-up valve has a check valve function to prevent backflow of the system when the make-up water pressure drops or stops.

2.The automatic water replenishment valve has a manual shut-off valve function, which can be turned off by screwing in the plastic knob to close the replenishment water source.

Technical term definition Chinese name: inlet valveEnglish name: inlet valve, main shut-off valve Other names: main valve Definition: A valve installed in front of the volute of the turbine or at the inlet of the pressure pipeline.

1. Principle: When energized, the electromagnetic coil generates electromagnetic force to lift the closing part from the valve seat and open the valve; When the power is off, the electromagnetic force disappears, and the spring presses the Lammon shut-off on the valve seat, and the valve closes.

2. The solenoid valve is the basic element of automation used to control the fluid, which belongs to the actuator; It is not limited to hydraulics, pneumatics. Solenoid valves are used to control the direction of hydraulic flow, and the machinery of the factory is generally controlled by hydraulic steel, so solenoid valves are used.

3. The working principle of the solenoid valve: there is a closed cavity in the solenoid valve, there are through holes in different positions, each hole is connected to a different oil pipe, the middle of the cavity is a piston, and there are two electromagnets on both sides, which side of the magnet coil energized valve body will be attracted to which side, open or close different oil drain holes by controlling the movement of the valve body, and the oil inlet hole is normally open, the hydraulic oil will enter different oil drain pipes, and then the piston of the cylinder is blindly pushed by the pressure of the oil, and the piston rod drives the piston rod, and the piston rod drives the mechanical assembly and tease. In this way, the mechanical movement is controlled by controlling the current interruption of the electromagnet.

Summary. Observation position, if the inlet pipe and outlet pipe are on the same side, then the upper side is the inlet water, and the lower side is the outlet.

Hello dear! Observe which pipe the filter is on, that pipe is the inlet pipe, and the outlet pipe is not equipped with a filter. The filters are Y-shaped with the tube.

Observe the color, the switch or tube is red for the water inlet part, and blue is the water outlet part.

Observation position, if the inlet pipe and outlet pipe are on the same side, then the upper side is the inlet water, and the lower side is the outlet.

If the inlet pipe and outlet pipe are diagonally opposite, then the upper side is the water inlet and the lower side is the water outlet.

Summary. Hello Kiss is happy to answer this question for you. <> inlet and return valves**:

1. The radiator inlet and return valves can be distinguished according to the location, identification, etc. 2. The radiator inlet and return valves are generally high for the inlet valve and low for the return valve; Properly installed valves have arrows that indicate the direction of water flow, and the inlet valve is the inlet valve according to the arrow pointing to the radiator, and vice versa. 3. One of the main equipment for hot water radiator heating.

Hello Kiss is happy to answer this question for you. <> water inlet and return valves**: 1. The radiator water inlet and return valves can be distinguished according to the prudent position, identification, etc.

2. The radiator inlet and return valves are generally high for the inlet valve and low for the return valve; Properly installed valves have an arrow rock vibrator to indicate the direction of water flow, according to the arrow pointing to the radiator is the inlet valve, vice versa is the return valve. 3. One of the main equipment for hot water heating and rough heating.

Dear, horizontal is open.

The return valve is installed at the return end of the radiator, adjusts the pressure difference between the inlet water and the return water, ensures the low-noise operation of the radiator and realizes the hydraulic balance at the end, and adjusts the water inlet valve of each heating loop as an accident valve and maintenance valve, which usually only has two working states of full open or full closed, and cannot be used to adjust the flow. The inlet valve is not allowed to be opened in the case of moving water, and its function is:

1) As a backup protection for the overspeed of the unit When the load of the unit is thrown off and the governor fails to operate, the main valve can be quickly closed in the case of moving water, cut off the water flow, prevent the time of the unit's flying speed from exceeding the allowable value, and avoid the expansion of the accident.

2) Reduce the water leakage of the unit when it is shut down, and shorten the time required for starting when it is started The water guide mechanism of the hydraulic turbine is often not tightly closed, and there is a large amount of water leakage after the shutdown, which not only wastes water energy, but also causes cavitation erosion damage in the gap due to water leakage. According to statistics, the general guide vane leakage is 2% of the maximum flow rate of the turbine 3%, and the serious can reach 5%, and some small units with high water head can not even be shut down due to excessive water leakage. When the unit is shut down for a long time, closing its inlet valve can greatly reduce the amount of water leakage.

The unit is shut down for a short time and generally does not close the inlet valve. Because this will release the water in the pressure steel pipe, and the water needs to be refilled before the next start, which not only prolongs the starting time of the unit, but also makes the unit unable to maintain the standby state at any time, and loses the advantages of flexibility and quickness of the operation of the hydropower station. At this time, the water inlet valve is opened so that the pressure steel pipe is in the state of waiting for water filling, which saves the start-up time.

For medium and high head power stations with long pressure pipes, this effect of the inlet valve is more obvious.

3) Provide safe working conditions for unit maintenanceWhen the power station uses a pressure pipe to divert water for several units to generate electricity, a water inlet valve needs to be installed in front of each unit. When a unit is overhauled, the water inlet valve of the machine is closed, and the normal resistance balance of other units will not be affected.

The function of the return valve is to regulate the return water flow. Adjust the amount of branch circulation, the amount is small, increase the opening, the amount is large, and the opening is reduced.

The function of the inlet valve is to adjust the inlet water volume and regulate the inlet water pressure.

The working principle of the water valve is that there are many, many people locked in the house, and when the door is opened, people will run out. People can't get out when the door is closed. Water is like people, and the valve repairs the door of the house, and the principle is the same.

The material of the water valve is different, there are copper, stainless steel and cast iron, etc. There are also spools divided into ceramic quick open, hemispherical quick open, and screw gate valves and so on.