Zhejiang Baolun central air conditioning two-way proportional integral electric control valve factory price

Zhejiang Baolun Valve Co
, Ltd
specializes in the production of central air conditioning electric control valve control valve
Key points: 1
It is used for hot water, cold water and low-pressure steam
2
Medium temperature: 1-10 ℃ to 180 ℃
3
0
03 of the leakage Kv value
4
Pressure range: 16bar
5
Diameter: dn15-500
5
The flow coefficient Kv value is 10-360
6
Connection method: screw port and flange
7
Pressure: PN16
8
Valve body material: brass, ductile iron, cast steel

Product Description: electric control valve is an important executive unit instrument in industrial automation process control
With the higher and higher degree of automation in the industrial field, it is being more and more used in various industrial production fields
Compared with the traditional pneumatic control valve, it has obvious advantages: the electric control valve saves energy (only consumes electric energy when working), is environment-friendly (no carbon emission), and is installed quickly and conveniently (without complex pneumatic pipeline and air pump workstation)
According to the power used by the actuator, the valve is divided into linear characteristics, equal percentage characteristics and parabolic characteristics according to its function and characteristics
The electric control valve is not without disadvantages: the internal heat generated by the motor operation will lead to thermal protection and stop the control valve; Because the motor must undergo multi-stage deceleration to output torque, the running speed is not very fast, and it is not applicable in some occasions requiring rapid opening and closing
The contradiction between DA torque and high speed is still difficult to solve; Due to the large number of moving parts, it is relatively easy to cause faults, especially under the condition of frequent adjustment, it is easy to cause faults such as motor thermal protection, reduction gear damage, module thyristor burnout, etc
under this condition, it is better to choose pneumatic control valve for Zui

Valve structure: the electric control valve is composed of the electric actuator and the control valve through mechanical connection, assembly, commissioning and installation

Part materials: valve body, bonnet, packing gland, valve rod, valve disc, sealing ring, indicator, valve rod nut, nut sleeve

Main materials: grey cast iron, cast steel, stainless steel, brass

Working principle: 1
Working power supply: DC24V, AC220V, AC380V and other voltage levels
2
Input control signal: DC 4-20mA or dc1-5v
3
Feedback control signal: DC 4-20mA (load resistance less than 500 ohms): drive the valve to change the cross-sectional area between the valve core and valve seat by receiving the signal from the industrial automation control system (e
g
4~20ma), and control the flow, temperature, pressure and other process parameters of the pipeline medium
Realize automatic adjustment function
The new electric control valve actuator contains feeding function, and accepts unified 4-20mA or 1-5v· The standard signal of DC converts the current signal into the corresponding linear displacement, automatically controls the opening of the regulating valve, and achieves the continuous adjustment of process parameters such as pressure, flow, temperature and liquid level of the fluid in the pipeline

Flow characteristic: the flow characteristic of the electric control valve is the relationship between the relative flow of the medium through the electric control valve and its opening under the condition that the pressure difference at both ends of the valve remains constant
The flow characteristics of electric control valve include linear characteristics, equal percentage characteristics and parabolic characteristics

Application fields: power, chemical industry, metallurgy, environmental protection, water treatment, light industry, building materials and other industrial automation systems

Valve installation: the electric control valve Zui is suitable to be installed with the upper end of the working piston at the lower part of the horizontal pipeline
The temperature sensor can be installed at any position, and the entire length must be immersed in the controlled medium
The electric control valve generally includes a driver, which receives the driver signal (0-10V or 4-20mA) to control the valve for regulation
It can also form an intelligent network control system according to the control needs to optimize the control and realize remote control

Action principle: the motor power supply is 220VAC or 380VAC, and the control signal is 4~20ma
There is a controller inside the valve
The controller converts the current signal into the angular stroke signal of the stepping motor
When the motor rotates, the gear, lever, or gear plus lever will drive the valve rod to operate to achieve straight stroke or angular stroke
Signal feedback: the motor operates through gears, and the sliding rheostat of the three joints outputs the positioning signal of the valve
In addition, there are limit signals of the three lines (fully open, fully closed, common line)
Valve classification: 1
ZAZP electric straight through single seat regulating valve zazn electric straight through double seat regulating valve; 2
Zazm/p electric sleeve regulating valve; 3
Zazqx electric three-way confluence (diversion) regulating valve; 4
Zazs electric angle regulating valve; 5
Zazs electric angle regulating valve; 6
T961y desuperheating water regulating valve; 7
Zazt and zaztc electric diaphragm regulating valves; 8
Zazpf46-10w electric lined Fu bellows regulating valve; 9
Zdlp electronic electric single seat regulating valve; 10
Zdln electronic electric double seat regulating valve; 11
Zdlm (P) electronic electric fine small sleeve regulating valve; 12
Zdzdlpm intelligent electric control valve; 13
Zdlq, zdlx electronic electric three-way regulating valve; 14
Zdlw electronic electric regulating valve

Similar products: similar to the functions of electric control valves are self operated control valves
The self operated regulating valve does not need additional energy and controls the temperature by adjusting the set point
When the temperature rises, the valve closes in proportion to the temperature change
The self operated regulating valve consists of a control valve and a thermostat (including a temperature sensor, a set point regulator, a capillary tube and a working piston)
The electric actuator depends on the selection of different temperature states for application
The temperature regulating valve operates according to the principle of liquid expansion
If the temperature on the sensor rises, the liquid filling will be heated and expanded at the same time
Under the action of the working piston, the valve will close and the medium will be cooled
It can be adjusted step by step through the set point key, and the electric two-way valve can be read out on the scale
All thermostats are equipped with an over temperature an full protection device