Product overview

The fire stabilizing pump, also known as the stabilizing pump, in conjunction with the main pump, takes water from the water tank and delivers it to the system to maintain system pressure. It is called a "normal high pressure" or "stable high pressure" or "quasi high pressure" system and is a system without a high-level fire water tank.

Function introduction

The stabilizing pump of the "stable high pressure" fire water supply system must be in normal operation to maintain the pressure of the pipeline network. In the event of a fire, it should still be able to operate for a period of time until the main fire pump is started. The stabilizing pump must be set according to the main and backup pumps. Due to the need for the stabilizing pump to remain in operation, which wastes energy, and the high demand for its service life due to the long-term operation of the stabilizing pump, this method is no longer used in engineering.

Overview of Principles

The pressure tanks are all set according to the capacity requirements of "small tanks". The effective volume of the fire air pressure water tank is 300L for the fire hydrant system, 150L for the automatic sprinkler system, and 450L if the two systems are used together. This type of pneumatic water supply device can still maintain system pressure for 30 seconds when the stabilizing pump fails. Moreover, the signal to start the main fire pump can occur in a timely manner when the working pressure of the system drops to the set pressure of the main fire pump. Therefore, the failure of the fire stabilizing pump has little impact on the safety of the system water supply. Even in extreme situations, the high-level water tank can still bear the task of supplying water to the system, but the water pressure at the most unfavorable position of the system is affected. The workflow of this method is roughly as follows: the pressure of the pneumatic water tank is provided by the stabilizing pump. When the pressure of the pneumatic water tank reaches the set requirement, the stabilizing pump stops. The pressure of the pipeline network is usually provided by the pneumatic water tank, which meets the water pressure and quantity requirements of the system. When the system pressure drops to a certain set level, the stabilizing pump starts, replenishes the system pressure, and then stops.

Start

1. The fire pump set is used in situations with suction head, that is, when the inlet is under negative pressure, water should be filled into the pipeline first or a vacuum pump should be used to fill the entire pump and inlet pipeline with water. Note that the inlet pipeline must be sealed and there should be no air leakage. (It is strictly prohibited to start without water before starting, and water must be used first before starting.)

2. Close the gate valve and pressure gauge plug on the outlet pipe to reduce the starting current.

3. Rotate the rotor a few turns by hand to lubricate the bearings and check for any friction between the impeller and sealing ring inside the pump. If it cannot rotate, it should not be started until the cause of the fault is identified.

4. During the trial start, the direction of the motor should be aligned with the arrow on the pump, and the stopcock should be opened.

5. When the rotor reaches normal operation and the pressure gauge shows pressure, gradually open the outlet gate valve and adjust it to the required working condition.

work

1. When the fire pump unit is in operation, attention must be paid to the instrument readings, and the pump should be operated near the flow head specified on the nameplate as much as possible to prevent high flow operation.

2. Regularly check that the motor current value should not exceed the rated current.

3. The bearing temperature of the fire pump unit shall not exceed 75 ℃ and shall not exceed the external temperature by 35 ℃.

4. When the pump unit starts running, the packing gland should be relaxed, and then adjusted to the appropriate level when the expanded graphite or packing is completely expanded.

5. If the wear of vulnerable parts is too large, they should be replaced in a timely manner.

6. If any abnormal phenomenon is found, stop the machine immediately to check the cause.

Shutdown

1. Close the gate valve on the water outlet pipeline and close the vacuum gauge plug.

2. Stop the motor and then close the pressure gauge plug.

3. If there is a cold winter season, the liquid in the pump should be drained to avoid freezing and cracking.

4. If the pump is stopped for a long time, it should be disassembled, cleaned and oiled, and properly stored.

Under normal circumstances, the pressure of the pipeline network is maintained through the operation of the fire stabilizing pump (alternating operation). The operating frequency of the fire stabilizing pump is adjusted by the feedback signal of the pressure gauge installed on the pipeline. That is, when the pressure of the pipeline network is less than the set value, it is adjusted
By increasing the number of runs, the water output should be increased. When a water pump runs at the power frequency for a period of time (adjustable time) and the pipeline pressure is still less than the set value, the next water pump should be put into operation. When the pipeline pressure is higher than the set value, the water pump should be stopped. If the pressure is still high, the power frequency water pump should be automatically stopped.

Signal acquisition and output of fire stabilizing pump

The water tank liquid level is displayed on site. When the water tank liquid level is high, the electromagnetic valve on the water supply pipe line will be automatically closed to stop water intake. When the water tank liquid level is low, the fire hydrant stabilizing pump will automatically stop and replenish the water tank in a timely manner.
When the fire booster and stabilizing pump is in operation, the operation, stop, and malfunction signals of the pump are sent to the station control room. The signals sent from the pressure control cabinet to the station control room are all passive contact signals (DC24V, 2A)

Fire voltage stabilizing equipment is essential in ensuring a stable power supply in fire protection systems. It helps regulate the voltage to prevent fluctuations that could affect the proper functioning of fire-related devices and equipment. This equipment is designed to be highly reliable and durable to operate effectively in emergency situations.
The fire voltage stabilizing equipment is crucial for maintaining the integrity of electrical systems in fire scenarios. It keeps the voltage within a safe and consistent range, allowing fire alarm systems, sprinkler systems, and other critical components to function properly. It is engineered to handle the demands of a fire environment and provide stable power.
Fire voltage stabilizing equipment serves as a safeguard for electrical circuits in fire situations. It mitigates the risks associated with voltage instability and ensures that fire protection measures can be activated and operate smoothly. This equipment is an important component in enhancing the safety and effectiveness of fire prevention and response systems.