Y945yh Electric Pressure Reducing Valve

• Media: Steam Oil Water
• Certification: CCC, RoHS, ISO, CE
• Temperature: High Temperature
• Connection: Flange
• Valve Seat: Single-Seat
• Structure: Lever
• Model NO.: Y945YH
• Material: Stainless Steel Carbon Steel Brass
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Origin: China
• HS Code: 8481804090
• Production Capacity: 9999

Product Description

Y945Y electric pressure reducing valve product description
Electric pressure reducing valve is mainly composed of valve body, valve seat, valve disc and other parts, using double seat, double cone valve disc structure. The electric steam reducing valve adopts the pressure balance type valve flap, and the pressure can be adjusted by the valve flap lifting and lowering with ZKZ-BC type or other straight stroke electric actuators to achieve remote control and automatic control. Y945H electric pressure reducing valve The product is more suitable for reducing pressure than 0.6. Y945H electric pressure reducing valve The product is mainly used for steam pipeline, regulating the pressure applied in cogeneration, textile, printing and dyeing, petrochemical, sugar and other industries. Shanghai Shenhong Valve Co., LTD. The main valves are: pressure reducing valve (gas pressure reducing valve, adjustable pressure reducing valve, water pressure reducing valve, steam pressure reducing valve
Due to the needs of the factory production process, steam is the process medium, it is necessary to input steam from the power plant, because the distance from the power plant to the factory there is a large pressure fluctuation and the flow fluctuation range of the actual use of the factory, so the pressure of the steam main pipe into the factory is reduced and regulated. The dynamic pressure regulating valve is composed of a small electric regulating valve with *PID pressure controller and * pressure sensor (you can also choose a time segment intelligent control pressure), high control accuracy, the electric pressure regulating valve flow channel is streamlined S, the import seal ring. The whole has the characteristics of smooth work, large allowable pressure difference, low noise flow characteristics. It is especially suitable for the workplace where the pressure difference is small and the pressure difference before and after the valve is large. This series of products have room temperature type, high temperature type, low temperature type, regulation cut type, bellows seal type and many other types. The nominal pressure grade of the product is PN1.6, 4.0 6.4, 10.0; Valve body diameter range DN20-DN300; Suitable for a variety of grades in the range of fluid temperature -150ºC -+560ºC; Leakage grade atmosphere is divided into grade, grade, grade; Flow characteristics are linear, equal ratio. A variety of specifications to choose from.

1, steam electric pressure regulating valve configuration:
Pressure transmitter according to the measured pressure feedback 4-20ma.DC current signal, compared with the set value in the console, when the difference between the two reaches a certain value, the console sends a regulating signal to the electric regulating valve. The actuator of the electric regulating valve according to this signal, so that the valve stem drives the spool to produce displacement, change the flow through the regulating valve, until the test point pressure meets the requirements. So as to achieve the purpose of automatic adjustment of pressure. It is composed of electric regulating valve, pressure transmitter and pressure regulator, which can complete the automatic control of pipeline pressure in modern industrial process. It has the characteristics of easy installation, fast response, high control accuracy, convenient setting, etc. It is suitable for chemical industry, food, biomedicine, environmental protection, metallurgy, water supply and drainage, paper making, electric power and other industries.
The electric pressure control system has been used in the steam pipeline and natural gas pipeline to control the pressure. An important breakthrough has been made in the production and manufacturing of modified automatic pressure control system in factories, forming a set of intelligent control system.

, basic performance
(1) Pressure regulation range:
The pressure regulating range refers to the range of the output pressure P2 of the pressure reducing valve that can be adjusted and controlled, and the specified accuracy is required in this adjustable range. The pressure regulating range is mainly related to the stiffness of the pressure regulating spring.
(2) Pressure characteristics:
The pressure characteristic refers to the output pressure fluctuation caused by the input pressure fluctuation when the flow rate g is a fixed value. The smaller the output pressure fluctuation, the better the characteristics of the pressure reducing valve. The output pressure must be lower than the input pressure - a fixed value to basically not change with the input pressure.
(3) Flow characteristics:
Flow characteristics refer to the input pressure - timing, the output pressure changes with the output flow g changes. When the flow rate g changes, the smaller the change in the output pressure, the better. Generally, the lower the output pressure, the less it fluctuates with the change in output flow.
Y945Y remote intelligent control electric steam reducing valve dimensions PN1.6-4.0
Y945Y remote intelligent control electric steam reducing valve dimensions
Y945Y high control precision remote intelligent control electric steam reducing valve Steam reducing valve selection and configuration

One of the most suitable heating fluids for industrial enterprises is saturated steam. An important characteristic of saturated steam is that the pressure corresponds to the temperature one by one. As the pressure of the steam rises, the temperature of the saturated steam gradually rises. The steam pressure is determined to determine the temperature of the steam, and then control the heat exchange temperature difference and output capacity of the heat exchanger. In some applications that are not convenient to measure steam temperature or product temperature, such as mold heating, transmission belt heating, articles sterilization and other applications, sometimes by controlling steam pressure to achieve steam temperature control, steam in the heating process for constant temperature heating, saturated steam in condensation heat release, pressure and temperature remain constant, Need to carefully choose the choice and design of working steam pressure We must always remember that the selection and configuration of steam pressure reducing valve suitable for use in process and heating applications is dry saturated steam (not superheated steam). In theory, the pressure of steam delivery depends on the pressure required by the steam point equipment. Energy-saving experience has shown that the steam specific volume is smaller at high pressure, so when conveying steam at a pressure higher than the pressure used, conveying the same amount of steam requires a smaller pipe diameter. High-pressure steam transport, it is necessary to decompress at each steam point to meet the pressure needs of the actual application process. When the boiler is operated at high pressure, it is closer to its operating condition and therefore more efficient.

The large heat storage capacity of the boiler when operating at high pressure helps to deal with fluctuations in system load and reduces the possibility of azeotrope of boiler water and steam carrying. Therefore, the pressure of the steam system should be lower than the design working pressure of the boiler, but as far as possible, the steam source pressure is transmitted in order to improve the efficiency and economy of the steam system. The boiler operates under the design pressure, and the steam is transported and distributed under the economic pressure and flow rate. The steam heat transfer pressure needs to be referred to according to the working pressure of the heat exchanger, the back pressure of the condensate system and other parameters. Set pressure regulator valve before the equipment, set safety valve after the pressure reducing valve, the upper deviation of the pressure reducing valve set pressure should be lower than the set pressure of the safety valve, and the set take-off pressure of the safety valve should be lower than the safety pressure of the heat exchanger to ensure the steam system
For the heat exchanger with temperature control, the design steam pressure of the heat exchanger should be different from the steam pressure before the control valve. On the one hand, the control valve itself has a pressure drop, and the actual pressure in the heat exchanger on the other side will be different with the adjustment of the control valve and the change of the heat output rate of the heat exchanger.
Y945Y high control precision remote intelligent control electric steam pressure reducing valve selection principle
&1. Clear the use of the pressure reducing valve in the equipment or device, determine the working conditions of the valve, such as applicable media, working pressure, working temperature and so on;
&2. Determine the nominal diameter and connection mode of the pipe connecting with the pressure reducing valve: flange, thread, welding, etc.;
&3. According to the pipeline transmission medium, working pressure, working temperature to determine the selected pressure reducing valve shell and internal materials: cast steel, carbon steel, stainless steel, alloy steel, stainless acid steel, gray cast iron, malleable cast iron, copper alloy, etc.;
&4. Determine the way to operate the reducing valve: manual, electric, electromagnetic, pneumatic or hydraulic, electro-hydraulic linkage, etc.;
&5. Select the type of pressure reducing valve;
&6. Determine the type of pressure reducing valve;
&7. Determine the parameters of the reducing valve; For automatic steam reducing valve, according to different needs first determine the allowable flow resistance, discharge capacity, back pressure, etc., and then determine the nominal diameter of the pipeline and the diameter of the valve seat hole;
&8. Determine the geometric parameters of the reducing valve: structural length, flange connection form and size, the size of the height direction of the reducing valve after opening and closing, the size and number of the connected bolt holes, and the size of the entire valve appearance.
 

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