Year1
- 材质：
- 铸铁
- 型号：
- SZL-4M
- 规格：
- DN32-DN350
Digital display flow control valve
National patent number: .(Counterfeiting must be investigated)
Digital display flow control valve is a control valve that can display the instantaneous flow in the pipe network , which adds a display function on the basis of the self-operated flow control valve, making the balance adjustment of the pipe network more convenient and accurate. It provides an important digital basis for pipe network system adjustment.
The application of digital display flow control valve in the pipeline network can directly and easily set the flow rate according to the design. Under the action of water, it automatically eliminates the flow deviation caused by the residual pressure head of the pipeline and pressure fluctuation, no matter how the system pressure changes. The set flow rate remains unchanged.
These functions of the valve enable flow adjustment to be completed at one time, turning system balance adjustment into simple flow distribution. Effectively solve the hydraulic balance imbalance of the pipe network. Can save more than % energy.
Performance and features:
. The flow rate can be set according to the design or actual requirements, avoiding blind adjustment and simplifying the complex network adjustment work into simple flow distribution
. Completely overcoming the cold and heat of the system The uneven phenomenon improves the quality of heating and cooling
. Reduces the design workload and does not require tedious hydraulic balance calculations for the pipe network
. Eliminates the flow redistribution work when switching between multiple heat sources and pipe network heat sources.
. The rotor part of the flow movement core adopts agate bearings, which are wear-resistant and rust-free
. The transmitter and sensor on the valve body have no power supply, and the display adopts a fully sealed structure and has a long service life.
. Automatically when not working Hibernation saves power, and the designed service life is more than ten years
. The display refreshes once every second, and the display is stable.
The working principle of the digital display flow control valve:
The structure of the digital display flow control valve is composed of an automatic valve core, a manual valve core, and a display part.
The display part is composed of flow movement, sensor transmitter, electronic calculator and display.
Its work is extremely complex.
The measured water flows through the valve, and the water flow impacts the impeller in the flow movement. The impeller rotates and is sensed by the sensor transmitter, causing the sensor to send out an electrical signal proportional to the flow rate. The flow electrical signal is sent to the electronic calculator through the wire. , after calculation by calculator and processing by microprocessor, its flow value is displayed.
The manual valve core is used to adjust the flow rate and set the required flow value according to the displayed value.
The automatic valve core is used to maintain a constant flow rate. When the pressure of the pipe network changes, the automatic valve core will automatically open or close the valve port under the action of pressure to maintain the set flow value unchanged. .
Technical parameters:
.Medium operating temperature~℃
.Working pressure difference~
.Flow rate display accuracy.%
.Control valve accuracy%
Material and service life
. Valve body of high quality gray cast iron
. Valve core brass
. Spring stainless steel
. Diaphragm EPDM embedded fiber
. Flow movement
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