The pressure switch is an important part of the double reed system, and the adjustment of its high and low pressure is essential for the normal operation of the system. The following will introduce the adjustment method of high and low pressure of the double-reed pressure switch.
1. The structure of the double-reed pressure switch.
A double-reed pressure switch is a common pressure control switch, and its structure is mainly composed of sensing parts, sealing parts and operating parts. The sensing component is mainly composed of a spring and a contact point to sense the change in system pressure;The sealing parts are mainly composed of sealing rings and gaskets, which are used to ensure the tightness of the systemThe operating parts are mainly composed of a piston and a piston rod, which are used to open and close the operating switch.
Second, the principle of double-reed pressure switch.
The principle of a double-reed pressure switch is based on the deformation of the spring caused by the change in pressure, which in turn drives the opening and closing of the contacts. When the system pressure is lower than the set value, the spring is compressed downward by the pressure and the contact is closed;When the system pressure is higher than the set value, the spring springs up by the reaction of the pressure and the contacts are open.
3. High and low pressure adjustment method of double-reed pressure switch.
1.High pressure adjustment.
In the high-pressure adjustment of the double-reed pressure switch, we need to adjust the preload of the spring. First, adjust the pressure of the system to the desired high pressure valueThen, loosen the set screw and slowly relax the spring until the system pressure value stabilizes at the set high pressure value. In this process, it is necessary to pay attention to the preload of the adjustment spring not to be too large, so as not to cause excessive burden on the system.
2.Low pressure adjustment.
In the low pressure adjustment of the double-reed pressure switch, we need to adjust the stiffness of the spring. First, adjust the pressure of the system to the desired low pressure valueThen, loosen the set screws and slowly tighten the spring until the system pressure value stabilizes at the set low pressure value. In this process, it is necessary to pay attention to the stiffness of the adjustment spring should not be too small, so as not to cause excessive impact on the system.
4. Precautions.
1.When adjusting the high and low pressure of the double-reed pressure switch, it needs to be done slowly to avoid excessive impact on the system.
2.After adjustment, it is necessary to check whether the system is well sealed, and if there is a leak, it needs to be repaired in time.
3.The setpoint of the double-reed pressure switch needs to be set according to the actual needs, and the setpoint that is too high or too low will affect the normal operation of the system.
4.In the process of use, it is necessary to regularly check the working status of the double-reed pressure switch, and if any abnormality is found, it needs to be dealt with in time.
In short, the high and low pressure adjustment of the double-reed pressure switch is an important part of ensuring the normal operation of the system. In actual operation, it is necessary to make gradual adjustments according to the requirements, and pay attention to relevant precautions to ensure the normal operation and safety of the system.