Self-pressure regulating valve, such as no other external energy supply, gas supply, relying on its own energy to drive the medium, both saving and environmentally friendly, easy to use, after installation can be put into a pressure value set up to run automatically, so The requirements for low control accuracy and the lack of power supply and air supply have been used more and more widely. However, in the use of the process, we must pay attention to the particularity of the type selection, otherwise it will easily lead to accidents. During use, pay attention to the selection and installation environment. Therefore, it is very important to understand the working principle and structure of the self-operated pressure regulating valve in detail.
1, purpose and scope <br> <br> self-pressure regulating valve (pressure valve hereinafter) which does not require external energy is only relying on pressure changes medium own energy-saving products automatically adjust the pressure of having measured, Execution and control of comprehensive functions. Widely used in petroleum, chemical, metallurgy, light industry and other industrial sectors and urban heating, heating systems. This product can be used for pressure control devices for non-corrosive (up to 350°C) liquids, gases, and steam.
2, the valve before the pressure Pl <br> <br> structure and working principle of the process medium through the valve core, a throttle valve, the valve pressure becomes P2. P2 membrane chamber under the action of the control through the input line of the actuator. Generated reaction force and the spring are balanced on the top plate. Determines the relative position of the spool, the valve seat after the pressure control valve. When the post-valve pressure P2 increases, the force that P2 exerts on the top plate also increases. At this point, the force of the top plate is greater than the reaction force of the spring. This will cause the valve plug to close to the position of the valve seat until the force of the top plate counterbalances with the spring reaction force. At this time, the flow area between the valve plug and the valve seat is reduced, and the flow resistance becomes larger. This lowers P2 to the set value. Similarly, when the post-valve pressure P2 decreases, the direction of action is the opposite of the above. This is the operating principle of the post-valve pressure adjustment. When it is necessary to change the setting value of the pressure P2 after the valve, the adjustment nut 8 can be adjusted.
3, the technical characteristics <br> <br> self-pressure regulating valve does not require any external energy, utilizing the medium own energy automatically adjust the actuator products. The biggest feature of this product is that it can work in a place without electricity and air, and at the same time saves energy. The pressure setting value can be adjusted freely during operation. Using quick opening flow characteristic, sensitive, good sealing performance, and therefore it is widely used in petroleum, chemical, electric power, metallurgy, food, textile, manufacturing and residential construction machinery and other industrial equipment in buildings of various gases, liquids and Steam medium decompression, voltage regulation (for valve adjustment), or pressure relief, pressure control (for valve pre-regulation) automatic control. The attached condenser can be used at a temperature of ≤350°C.
1, purpose and scope <br> <br> self-pressure regulating valve (pressure valve hereinafter) which does not require external energy is only relying on pressure changes medium own energy-saving products automatically adjust the pressure of having measured, Execution and control of comprehensive functions. Widely used in petroleum, chemical, metallurgy, light industry and other industrial sectors and urban heating, heating systems. This product can be used for pressure control devices for non-corrosive (up to 350°C) liquids, gases, and steam.
2, the valve before the pressure Pl <br> <br> structure and working principle of the process medium through the valve core, a throttle valve, the valve pressure becomes P2. P2 membrane chamber under the action of the control through the input line of the actuator. Generated reaction force and the spring are balanced on the top plate. Determines the relative position of the spool, the valve seat after the pressure control valve. When the post-valve pressure P2 increases, the force that P2 exerts on the top plate also increases. At this point, the force of the top plate is greater than the reaction force of the spring. This will cause the valve plug to close to the position of the valve seat until the force of the top plate counterbalances with the spring reaction force. At this time, the flow area between the valve plug and the valve seat is reduced, and the flow resistance becomes larger. This lowers P2 to the set value. Similarly, when the post-valve pressure P2 decreases, the direction of action is the opposite of the above. This is the operating principle of the post-valve pressure adjustment. When it is necessary to change the setting value of the pressure P2 after the valve, the adjustment nut 8 can be adjusted.
3, the technical characteristics <br> <br> self-pressure regulating valve does not require any external energy, utilizing the medium own energy automatically adjust the actuator products. The biggest feature of this product is that it can work in a place without electricity and air, and at the same time saves energy. The pressure setting value can be adjusted freely during operation. Using quick opening flow characteristic, sensitive, good sealing performance, and therefore it is widely used in petroleum, chemical, electric power, metallurgy, food, textile, manufacturing and residential construction machinery and other industrial equipment in buildings of various gases, liquids and Steam medium decompression, voltage regulation (for valve adjustment), or pressure relief, pressure control (for valve pre-regulation) automatic control. The attached condenser can be used at a temperature of ≤350°C.
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