The fully automatic variable frequency speed regulation constant pressure fire water supply equipment is designed and developed in accordance with the national fire protection standard "Code for Fire Protection Design of High rise Civil Buildings" and the Ministry of Public Security fire protection standard "Performance Requirements and Test Methods for Fire Pressure Water Supply Equipment". It has excellent performance, advanced technology, and stable and reliable water supply.

Application scope of fully automatic variable frequency speed regulation constant pressure fire water supply equipment:

1. Fire water supply for industrial and civil buildings

2. Fire hydrants and sprinkler water supply

3. Fire and domestic shared water supply

Technical parameters of fully automatic variable frequency speed regulation constant pressure fire water supply equipment:

Flow range: ≤ 360m3/h

Pressure range: ≤ 2.5MPa

Temperature range: -20 ℃ to 110 ℃

Motor power: ≤ 315kW

Pressure regulation accuracy: ≤ 0.01MPa

The pressure tank, control system, and fire pump supporting the pressure fire water supply equipment are specially designed and manufactured. When equipped with an automatic air supply tank, there is no need for an air compressor or nitrogen cylinder to inflate, and it can automatically adjust to ensure the appropriate gas water ratio, efficiently utilizing the total volume of the pressure tank. It has an advanced, easy-to-use, and highly reliable control system. The fire pressure water supply equipment integrates complete fault protection and alarm functions, and has automatic regular inspection function for fire pumps. It can accept and process various fire signals and issue various operating condition signals.

Product standard for fully automatic variable frequency speed regulation constant pressure fire water supply equipment:

Performance Requirements and Test Methods for Fixed Fire Water Supply Equipment Part 1: Fire Pressure Water Supply Equipment

GA 30.1-2002

GA 29 Performance Requirements and Test Methods for Pressure Switches for Fire Protection

Performance requirements and test methods for water flow indicator of GA 32 automatic sprinkler fire extinguishing system

GB 7251.1 Low voltage switchgear and control equipment - Part 1: Type testing and partial type testing equipment

GB 5135 Technical Requirements and Test Methods for Sprinkler Heads of Automatic Sprinkler Fire Extinguishing Systems

GB/T 3797 Electrical Control Equipment Part 2: Electrical Control Equipment with Electronic Components

GB/T 3222 Acoustic Environment Noise Measurement Method

GB/T 3216 Test methods for centrifugal pumps, mixed flow pumps, axial flow pumps, and vortex pumps

GB/T 2682 Colors of indicator lights and buttons in electrical complete sets of equipment

GB/T 2681 Color of Wires in Electrical Equipment

GB/T 2423.2 Basic Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test B: High Temperature

GB/T 2423.1 Basic Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test A: Low Temperature

GB/T 2421 Environmental testing for electrical and electronic products - Part 1: General principles

GB 150 Steel Pressure Vessels

The fire pump, pressure tank, and control system supporting the fire pressure water supply equipment are all specially designed and manufactured by Liangbang Pump Valve. When equipped with an automatic air replenishment tank, there is no need for an air compressor or nitrogen cylinder inflation. It can automatically adjust to ensure the appropriate gas water ratio, efficiently utilize the total volume of the pressure tank, and have an advanced, easy-to-use, and highly reliable control system. The fire pressure water supply equipment integrates complete fault protection and alarm functions, and has automatic regular inspection function for fire pumps. It can accept and process various fire signals and issue various operating condition signals.

The fire pump, pressure tank, and control system supporting the fire pressure water supply equipment are all specially designed and manufactured by Liangbang Pump Valve. When equipped with an automatic air replenishment tank, there is no need for an air compressor or nitrogen cylinder inflation. It can automatically adjust to ensure the appropriate gas water ratio, efficiently utilize the total volume of the pressure tank, and have an advanced, easy-to-use, and highly reliable control system. The fire pressure water supply equipment integrates complete fault protection and alarm functions, and has automatic regular inspection function for fire pumps. It can accept and process various fire signals and issue various operating condition signals.

Working principle of fully automatic variable frequency speed regulation constant pressure fire water supply equipment:

When the system is in a stable state, due to the discharge of some gas from the water in the pressure tank, the pressure inside the tank decreases. When it reaches a certain pressure, the pressure sensor sends a signal to open the solenoid valve through the electric control box to discharge the water in the tank. When the water level drops to the lower limit, the solenoid valve closes and the liquid level sensor sends a signal to control the water replenishment pump to start working, replenishing water and air to the pressure tank.

When the water level reaches the upper limit, the actual water pump stops, but when the pressure inside the tank does not reach the set maximum working pressure, the solenoid valve opens and the tank drains. When the water level reaches the lower limit, the water replenishment pump starts again and cycles multiple times until the pressure and water level in the tank reach the specified position, at which point the water replenishment pump stops to ensure that the rated working pressure and water level are maintained in the tank at all times.

1. Fully automatic pneumatic water supply fire-fighting equipment: When a fire occurs and the fire hydrant is opened, a fire water column is immediately sprayed out. At the same time, the fire-fighting water stored in the pneumatic tank (10 minutes) is sent into the fire-fighting pipeline network by gas pressure to meet the ten minute fire-fighting flow and pressure.

2. Fully automatic emergency water supply and firefighting equipment: When a fire occurs and the fire hydrant is opened, a fire water column is immediately sprayed out, and the electric contact pressure gauge sends a signal to start the fire pump and supply the required firefighting water. If there is a power outage in the power grid, the main circuit will automatically switch to the backup power source to start the fire pump and ensure the normal operation of the equipment.

3. Fully automatic diaphragm fire-fighting equipment: The working principle is basically the same as that of fully automatic emergency water supply fire-fighting equipment. The diaphragm fire-fighting equipment is equipped with diaphragm capsules, which can avoid the problem of air dissolving in water.