High pressure steam solenoid valve introduction

1. What is a high pressure steam solenoid valve?

The high-pressure steam solenoid valve is an actuator for the industrial process automation control system. It can automatically open or close the valve after receiving the electronic control signal, so as to realize the on-off or flow regulation control of the fluid medium in the pipeline, thereby the temperature in the system, Parameters such as flow rate and pressure are automatically adjusted or remotely controlled. Shuangde high-pressure steam solenoid valve can be widely used in textile, printing and dyeing, chemical, plastic, rubber, pharmaceutical, food, building materials, machinery, electrical appliances, surface treatment and other production and scientific research departments as well as bathroom, canteen, air conditioning and other people's daily life facilities. ZQDF series solenoid valves are mainly used for the control of air, steam, gas and other gaseous media; ZQDF-Y series solenoid valves are mainly used for liquid media such as tap water, distilled water, chilled brine, electroplating waste liquid, etc., and also used for viscosity less than 4°E. Oils.

Second, the working principle of high temperature solenoid valve

When the solenoid solenoid is energized, the connecting rod is lifted, the rotating shaft is rotated, and the auxiliary valve is opened. Since the secondary valve is opened, the pressure fluid in the upper portion of the main valve cup is discharged, so the pressure in the lower portion of the main valve cup is higher than the upper portion, so that the lower pressure pushes the main valve cup upward. After the main valve is opened, the upper and lower pressures are equal, and the valve cup is placed in equilibrium under the action of electromagnetic force and upper and lower pressure, and the valve is opened. When the power is off, under the action of the armature weight and the return spring, the auxiliary valve is closed, and after the auxiliary valve is closed, the pressure of the upper part of the main valve cup is increased and the main valve cup is pressed down to achieve the flow-cut sealing function, and the valve is closed. .

Third, the use of high temperature solenoid valve

The high-temperature solenoid valve is a pilot-operated direct-acting solenoid valve. It has a wide range of common media and can be used for fluids such as water, light oil, heavy oil, non-corrosive gas and steam, such as the drainage system of the power station and the evaporator. In the exhaust system, the two-position automatic adjustment and remote control are mainly performed on the medium in the pipeline.

Fourth, high temperature solenoid valve features

High temperature resistance: The metal hard seal is used to increase the operating temperature.

Corrosion resistance: The main components are valve plugs, the valve body is made of stainless steel and cast steel, and the corrosion resistance is good.

Heat resistance: The electromagnetic and sealing parts are all made of special high temperature resistant electrical materials and sealing materials, and effective heat insulation measures are adopted.

Wear-resistance: Reasonable material selection, clever use of fluid lubrication between the valve plug and the valve body to reduce wear.

Resistance to condensation: The cold north water of the steam pipe is an important factor affecting the action of the steam solenoid valve. The valve is not affected by the condensed water.

Five, high pressure steam solenoid valve installation instructions

1. When installing, the solenoid valve coil is upward and maintains the vertical position. The arrow or mark on the solenoid valve should be consistent with the flow direction of the pipeline, and should not be installed in places with splashing water or water leakage.

2. The working medium of the solenoid valve should be clean and free of particulate impurities. The dirt and filter on the surface of the solenoid valve internal parts should be cleaned regularly.

3. When the solenoid valve is faulty, in order to isolate the solenoid valve in time and ensure the normal operation of the system, it is better to install a bypass device (Figure 1).

4. In the pipeline system, the diameter of the solenoid valve installed on the branch road should be smaller than the diameter of the main pipeline valve (Figure 2).

5. Before installing the solenoid valve, the pipe must be cleaned. It is recommended to install a filter in front of the valve and a steam pipe to install the trap.

6. The valve cannot be installed in the low recess of the pipeline to prevent the condensation of steam, impurities and the like from being deposited in the valve.

7. Ordinary solenoid valves cannot be used in explosion hazardous situations.

8. In the case of insufficient rigidity of the pipeline, it is recommended to fix the pipe in front of the valve with a bracket to avoid vibration caused by the solenoid valve working.

9. Before installation, pay attention to see the product label, read the instruction manual carefully, and judge whether the product meets the conditions of use.

10. A pressure gauge should be installed on the pipe before and after the solenoid valve to observe the pipe pressure.

Sixth, high pressure steam solenoid valve use and maintenance

1. It is recommended to use a unit to assign someone to take care of the maintenance.

2. After the solenoid valve is installed, it is necessary to pass the medium experiment action several times. After confirming the normal condition, it can be put into formal use.

3. The dirt inside and outside the large valve and the suction surface should be cleaned regularly, taking care not to damage the sealing surface.

4. When the solenoid valve is not used for a long time, the manual valve should be closed before the valve is re-enabled. The steam solenoid valve should be cleaned out of the condensed water and tested several times. It can be put into use after the switch is normal.

5. When the solenoid valve is removed from the pipeline, the internal parts should be wiped clean and stored with compressed air.

6. When the use time is long, if the seal between the piston and the valve seat is not good, the piston sealing surface can be re-polished and then grinded with the valve seat.

7. When working, pay attention to the pressure gauge before and after the valve, the working pressure should not exceed the rated pressure, and the working pressure difference must be within the rated pressure difference. When the working pressure exceeds the rated pressure or the working pressure difference exceeds the rated pressure difference, the solenoid valve should be stopped, and the front and rear manual valves should be closed to prevent the solenoid valve from exploding and leaking.