The balance valve is a functional dedicated valve. The basic structure of the valve body is not significantly different from conventional valves, with differences mainly in usage function and application scenarios. Industrial pipelines and pressure vessels internal flowing media often have large pressure differences and flow differences between cavity and pipeline segments. To weaken and balance the pressure difference on both sides of the pipeline, or to achieve medium flow balance through diversion control, suitable regulating valves are installed at pipeline and vessel connection positions. Such valves used for pressure and flow balance regulation are called balance valves. Balance valves are suitable for hydraulic conditions, realizing system dynamic and static bidirectional balance regulation, suitable for heating and fluid pipeline hydraulic balance regulation operations.
According to control mode and working principle, balance valves are divided into three categories: static balance valves, dynamic balance valves, and differential pressure related balance valves.
Static balance valves have many alternative names, also commonly called manual balance valves, digital lock balance valves, and dual-position regulating valves. The valve body relies on regulating the opening clearance between valve core and seat to change the valve flow capacity coefficient, adjusting the flow resistance of the medium passing through the valve body, thereby controlling pipeline medium flow and completing branch flow balance allocation.
Static balance valves act on pipeline system operating resistance, eliminating pipeline branch resistance imbalance problems, allowing pipeline medium water volume to be evenly distributed according to design ratio. When system load increases or decreases, each pipeline branch medium flow can be synchronously proportionally adjusted, ensuring stable branch flow ratio.
Static balance valves are suitable for installation at all points of hydraulic pipelines, can be installed at main pipes, vertical risers, horizontal branches, and pipeline end positions. The hydraulic balance regulation effect is equivalent to the effect of same-path pipeline layout, simplifying pipeline layout technology and reducing pipeline construction costs.
1. Valve body structure is universal, relying on functional adaptation for different working conditions, suitable for fluid pressure and flow imbalance pipelines;
2. Bidirectional balance regulation, covering static steady-state balance and dynamic working condition hydraulic balance, suitable for variable load fluid systems;
3. Clear category classification, static, dynamic, and differential pressure type three valve types, suitable for different pipeline balance regulation needs;
4. Manual opening controllable, static balance valve can adjust valve core opening, precisely changing flow resistance, proportioning branch medium flow;
5. Branch linkage balance, when system load changes, each branch flow synchronously proportionally adjusts, stable hydraulic allocation;
6. Flexible installation adaptation, can be laid at main pipes, branch pipes, pipeline ends, simplifying pipeline hydraulic balance construction design.
Widely suitable for building heating water circulation systems, industrial process fluid pipelines, heat exchange station water circulation pipelines, hydraulic diversion pipelines, energy storage matching fluid pipelines. For pipeline branch pressure imbalance and flow allocation imbalance problems, hydraulic balance and medium diversion balance regulation are performed, suitable for water, oily fluid and other flowable medium pipelines.
1. Select type matching pipeline working conditions, pressure difference control uses differential pressure related type, steady-state flow allocation uses static balance valve;
2. Installation should follow medium flow direction identification, ensuring medium flows forward through the valve body, ensuring stable resistance regulation accuracy;
3. Opening debugging should follow pipeline design flow ratio, lock opening after debugging, avoid human parameter changes;
4. Clean welding slag and particle impurities in early pipeline stage, avoid impurities sticking valve core, affecting valve body resistance regulation accuracy;
5. For multi-branch pipeline debugging, balance and adjust valve body opening branch by branch, coordinating overall pipeline flow allocation ratio;
6. For long-term operation conditions, regularly inspect valve body opening, verify branch flow values, fine-tune balance parameters as needed;
7. For low-temperature fluid conditions, provide valve body anti-freeze protection, avoid medium freezing and stuck valve core, affecting regulation function.