HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

What is the specified lift height for fire pumps?

2009-08-01View Original

Thread Content

What is the specified lifting height for fire pumps? Are there standards?
Reply #22009-08-01
There’s no standard, right? In my opinion, there is only a requirement for the head of the fire pump during the design phase.
Reply #32009-08-02
The Design Code for Fixed Fire Pump Systems GB50338‑2003 contains formulas for calculating the range of fire hoses; you may want to take a look at them. Fire pumps include water cannons and foam cannons, etc., and the calculation of their range varies.
Reply #42009-08-02
There are no standards; different models have varying head capacities
Reply #52009-08-03
The range and angle of the fire pump must be calculated based on the geometric characteristics of the object to be protected and the location of the fire pump
Reply #62009-08-05
Performance parameters of fire pumps: 【? ~】1) General parameters: Fire cannon flow rate – 20 L/S; inlet flange size – DN50 to DN65; rated operating pressure – ≥0.8 MPa; maximum operating pressure – 1.6 MPa; rated range – ≥50 m; horizontal rotation angle – greater than 180°; vertical pitching angle – -85° to +30° (not lower than this range); rotation speed – ≥9°/S; spray angle – ≥90°; supply voltage – 24 VDC; monitoring radius – ≥60 m; time required for automatic targeting – ≤60 S; allowable operating temperature range – -10°C to +50°C 【? ~】2) Pipeline network interface: Flange connection 【? ~】3) Video retention time: ≥30 days 4) Operations: a. Manual operation: requires flexibility in adjustment, as well as simplicity and speed in execution. The operations include directly starting the fire pump, adjusting the horizontal and vertical angles of the fire nozzle, continuously changing the jet pattern from a columnar to a misty flow, as well as other necessary operations. b. Remote control operation: From the control room, the movement of the fire cannon can be manually controlled by a central controller via video images. c. Automatic operation: When the fire monitoring system detects a fire, it can automatically instruct the fire cannon to search for and aim at the target, open the solenoid valve, activate the water flow indicator, and automatically start the fire cannon’s water pump. After the fire source is extinguished, the solenoid valve and the fire pump supply water pump shut off automatically. 5) Safety measure requirements: The gun barrel structure should be compact and robust, with few system failures. 6) The 32 video streams collected by the control unit of the automatic fire sprinkler system are required to be connected to the security video matrix of the low-voltage electrical system via a loop-through connection. The bidder only needs to provide the loop-through interface (the wiring from the control unit to the security video matrix is the responsibility of the low-voltage electrical installation team), and assist that team with the debugging process. Adaptability requirements: 1) Pipe connection interface: At each fire monitor station, a water supply pipe with a diameter of DN50–65 and a flange interface, sourced from the fire monitor water supply network, shall be installed. The flanges (one set per station) as well as the valves and signal butterfly valves located after the flanges shall be provided by the bidder, and the associated costs shall be included in the bid price. 2) Power of the fire pump: 90 KW; Head: 130 m; Flow rate: 0–40 L/S. 3) Ambient temperature: -10°C to +40°C. 4) Power supply provided by the fire control center: ~380 V, three-phase five-wire system at 50 Hz, or ~220 V, single-phase system at 50 Hz; ground resistance ≤ 4 Ω. 5) There is one fire control center: The control unit for the automatic fire sprinkler system and the conventional fire alarm system are installed in this center, enabling management and monitoring of fire detection as well as automatic extinguishing operations for the automatic fire sprinkler systems in the exhibition halls and lobbies of the international convention center.

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.