Speed Pressure Control
In fixed speed operations, the discharge pressure of the pump can increase significantly above the nominal value at low capacities. In certain cases, the maximum pressure of the (existing) pipework is exceeded.
WB Firepacks has the solution for these situations: Speed pressure control. With speed pressure control, the maximum discharge pressure of the pump is limited by adjusting the speed of the diesel engine.
Main features
- Limiting the maximum discharge pressure of the pump
- Gradually rev up the diesel engine after start
- Improved stop procedure
- Minimize pressure surges
- Extends the life of the diesel engine
Function
The main components of the Speed Pressure Control are the spring-loaded actuator that operates the throttle lever of the fuel pump, a pressure transmitter mounted on the pressure side of the pump and the control unit. In the case of a WB-CAN controller, this control unit is integrated in the control box itself.
In situations where the discharge pressure would exceed the preset value, the speed of the diesel engine is reduced by control via the actuator so that the set pressure is maintained.
The system is fail-safe by means of a spring built into the actuator. This spring ensures that the throttle lever is in the position of nominal speed when the actuator is not energized. In addition to limiting the discharge pressure of the pump, the use of Speed Pressure Control provides other advantages.
Gradual acceleration of diesel engine after start:
Normally, a diesel engine accelerates immediately to its rated speed after starting. It is clear that this is very unfavorable for the lifespan of the diesel engine. In addition to reducing the service life, this can also lead to pressure surges in the underlying system.
With the Speed Pressure Control, the engine is gradually accelerated to nominal speed or desired pressure within 15 seconds. This extends the life of the diesel engine and prevents the formation of pressure surges.
Improved stop procedure:
With a conventional controller, the diesel engine is immediately stopped after the stop signal. It is clear that this greatly shortens the lifespan of the diesel engine and in particular the turbocharger.
The speed control first gradually reduces the speed to idle and allows the engine to run there for at least 30 seconds before stopping. This allows the turbocharger to get rid of its high speed and residual heat, significantly reducing wear.
Specifications of the Speed Pressure Control
| Motor | Diesel |
| Regulations | NFPA, EN1285, CEA |
Would you like to know more about our Speed Pressure Control?
"I will talk to installers and end users to find out together what their needs are in terms of new construction. When we have identified the need, I will advise you on which solution(s) are most suitable!"
Sjaak Blom
