VALVOLB ball valve automatic air supply installation

Product Overview:

The VALVOLB ball valve automatic air supply device consists of a two position three-way electric ball valve, two manual ball valves, one-way valves, safety valves, etc. It can automatically supply air to the hydraulic device or other energy storage devices of hydropower stations to maintain their internal air supplyLiquid ratio.

The VALVOLB ball valve automatic air supply device adopts a ball valve plate structure with high integration, which can achieve zero differential pressure operation, large air flow, and can be manually switched on site. It is equipped with valve position display and valve position switch feedback signal. The electric mechanism adopts direct currentSource, stable and reliable.

Product features:

1. Adopting a ball valve plate structure, it can achieve zero differential pressure operation, with a large air flow rate and short air replenishment time, completely solving the problem of pilot operated solenoid valves in low pressure differentials

The characteristic of low traffic and long action time during work

2. Adopting hard sealing, with good sealing performance, fully integrated, and compact size. Even if the power supply disappears, electric execution can still be used

Manual operation on the mechanism, equipped with mechanical valve position display and limit switch output.

3. It has manual air supply and manual exhaust functions.

4. A safety valve is installed in the device. When the air source pressure is too high, the safety valve automatically opens and prompts the operating personnel to take measures.

5. The whole machine adopts a stainless steel structure.

6. The driving mechanism adopts an electric head with high torque, and the safe operation time is several times higher than that of general driving mechanisms.

Technical indicators:

Rated pressure: 4MPa, 6.4MPa, 10MPa

Medium: Compressed air

Diameter: 8, 10, 15, 20mm

Installation direction: horizontal or vertical installation

Process connection: Welding connection adopts JB6381.-92 standard

The sleeve type connector adopts the GB3733-83 standard

Working voltage: AC220V, DC220V, DC24C, DC110V

Protection level: IP65

Working environment: -5~50 ℃

working principle:

1. Close manual ball valves 2 and 5. When the automatic air supply conditions are met, the driving mechanism will be powered to drive the ball valve spool to rotate. After the spool is turned to its position, the pressure will be reduced

The force chamber P is connected to the working chamber A, and the compressed air passes through the filter 6 and the connecting plate 4 to the one-way oil pressure device, which automatically replenishes the oil pressure device

Qi,At this point, the valve position points to the open position, and the position switch outputs a signal indicating that the valve is fully open.

2. Stop air supply: When the driving mechanism receives a stop air supply signal, the driving head is powered to drive the valve core to rotate. After the valve core rotates in place, it works

The chamber A is connected to the exhaust chamber O, and the gas stored in the device is discharged from the exhaust chamber. At this time, the valve position points to the closed position, and at the same time, an output valve close in place signal is sent

Number.

3. The power supply for device operation has disappeared, and manual operation can be performed using the handle mechanism provided by the drive mechanism, which can also achieve the above steps.

Manual air supply working mode:

When manually replenishing air, simply open manual ball valve 5. After the pressure of the oil pressure device rises to the rated value, close the manual ball valve. Manual exhaust,

Open manual ball valve 2, and after the oil pressure device drops to the rated value, close the manual ball valve.

Protection method：

When the pressure of the oil pressure device is higher than the set pressure of the safety valve, the safety valve automatically opens and exhausts outward until it drops to the required level and then automatically closes

Close it.