Siemens three-way temperature control valve supplier

Siemens three-way merging and three-way diversion regulating valve temperature control valve DN15-250

The Siemens hybrid three-way temperature control valve mainly consists of a domestically produced valve body, Siemens original actuator (SKC/SKB/SKD/SBV/AX61), Siemens controller (RWD60/RWD68/RWD62), and Siemens temperature sensor (QAE2121.010)

Electric three-way regulating valveAccording to the mode of action of the fluid, it can be divided into two types: merging valves and diverging valves. The merging valve has two inlets, and after merging, it flows out from one outlet. The diversion valve has a fluid inlet, which splits into two streams and flows out from two outlets.

Structure and diversion of three-way regulating valve for mergingthree-way control valveThe structure is similar.

Its characteristics are as follows:

1. The electric three-way regulating valve has two valve cores and seats, similar in structure to a double seat valve. But in an electric three-way regulating valve, when the flow area between one valve core and the valve seat increases, the flow area between the other valve core and the valve seat decreases. In a double seat valve, the flow area between the two valve cores and the valve seat increases or decreases simultaneously.

2. The opening and closing of the electric three-way regulating valve can only be achieved by selecting the positive and negative actions of the actuator. The change of gas opening and closing of the double seat valve can be directly achieved by reversing the valve body or valve core with the valve seat.

3Electric three-way regulating valveWhen used in control systems that require fluid proportioning, it can reduce costs and installation space by replacing one gas open control valve and one gas closed control valve.

4. Electric three-way regulating valves are also used in bypass control environments, for example, where one fluid passes through a heat exchanger for heat exchange while the other fluid does not. When the electric three-way regulating valve is in front of the heat exchanger, a diversion three-way regulating valve is used; When the three-way regulating valve is installed after the heat exchanger, merging is usedElectric three-way regulating valveDue to the fact that the fluid flowing through the three-way valve installed in front of the heat exchanger has the same temperature, the leakage is relatively small; The fluid flowing through the three-way valve installed after the heat exchanger has different temperatures, resulting in varying degrees of expansion of the valve core and seat, leading to significant leakage. Usually, the temperature difference between two fluids should not exceed 150 ℃.

Adopting a valve cage structurethree-way control valveEquipped with a balance hole and guided by a valve cage. Therefore, it can greatly reduce the unbalanced force. Early three-way regulating valves used cylindrical thin-walled windows and guided by the side of the valve core. Although it could reduce the unbalanced force, there was still a large unbalanced force when a fluid approached closure (flow direction). Moreover, with the change of valve opening, the unbalanced force changed. The use of a valve cage structure with a balance hole can eliminate the unbalanced force and has a damping effect, which is conducive to the stable operation of the control valve. Due to the large leakage of electric three-way regulating valves, in applications that require small leakage, two control valves (and two-way connections) can be used for fluid diversion, merging, or proportioning control. Electric regulating valves are important execution unit instruments in industrial automation process control. With the increasing degree of automation in the industrial field, it is being applied more and more in various industrial production fields. Compared with traditional pneumatic control valves, it has obvious advantages: energy-saving (only consumes electricity during operation), environmentally friendly (no carbon emissions), and quick and convenient installation.

Product features of electric three-way regulating valve

1. The direction of fluid action on the valve core is in the open state, so the working stability is good.

2. In addition to the liner guidance at the valve cover, the side of the valve core and the inner surface of the valve seat also have a guiding effect, with a large guiding area and reliable operation.

3. The servo amplifier adopts deep dynamic negative feedback, which can improve the adjustment accuracy.

4. There are various forms of electric operators that can be applied to 4-20mA.DC or 0-10mA.DC.

5. Electronic electric control valves can be directly controlled by current signals to regulate valve opening, without the need for servo amplifiers.

6. Save automation investment. Compared with single seat, double seat or sleeve regulating valves, the same system can save one valve, simplify the system, and save investment.

7. The bellows sealing type forms a seal for the moving valve stem, blocking fluid leakage.

8Electric three-way regulating valveDivided into T-shaped and L-shaped, the medium is divided and merged, and the selection is determined according to the on-site working conditions.