XBD-HL constant pressure fire tangent pump

The difference between XBD-HL constant pressure fire tangent pump and domestic pump

　　Fire tangent pumpDifferent from domestic pumps, the difference lies in:
(1) The fire flow is relatively regular. The fire hydrant water supply system increases in stages of 5L/s. The automatic sprinkler fire extinguishing system increases in flow rate values corresponding to the light hazard level, medium hazard level, and severe hazard level.
(2) Fire pumps are used to ensure the volume and pressure of firefighting water, which involves personal safety and property protection, and must operate reliably. Require a reasonable pump body structure, appropriate materials, and high reliability.
(3) Fire pumps generally supply water directly to fire extinguishing facilities (fire hydrants, sprinkler heads) through water pumps. Provide small flow water supply during initial fire extinguishing or self inspection operation, and supply water according to the design flow during the fire development stage. When the flow head curve of the water pump is steep, it is easy to experience overpressure during low flow operation, and corresponding technical measures should be taken to address this issue.
(4) Fire pumps are used for extinguishing fires and require quick and timely response, with corresponding requirements for short water intake time and good start-up performance.

Principle of XBD-HL constant pressure fire tangent pump

XBD-HL constant pressure fire tangent pump is a new principle fire pump, which is a product converted from military to civilian use. When the XBD fire tangent pump is running, the outlet pressure is gentle and the head remains almost unchanged when the flow rate changes. It is particularly suitable for the requirements of variable flow and pressure stabilization in fire protection. There are two types of structures: direct horizontal and direct vertical. XBD consumptionAnti tangent pumpThe entire series uses Y2 type extended shaft motors, with radially open impellers, no mouth rings, and no rust, making the operation particularly smooth and reliable
The tangent pump in this paragraph has now been renamed as a building fire pump
Tangent pumps are now renamed as building fire pumps for firefighting purposes, and as variable flow stabilizing pumps for daily use. The use of tangent pumps brings corresponding changes to the fire water supply network, mainly including:
The main contents related to fixed fire pumps in the standard are as follows:
(1) The code for the fire pump is XB.
(2) The characteristics of the prime mover include electric motor, gasoline engine, and diesel engine, with codes D, Q, and C respectively. The code for the fire pump driven by an electric motor is XBD.
(3) The rated flow Qn of the pump set is 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 140, 150, 160, 180, 200L/s.
(4) The rated pressure Pn of the pump set is 0.3MPa to 3.0MPa.
(5) At a suction depth of 0m, the requirements for rated flow rate and rated pressure should be met. When the suction depth is 6m, the pressure should be at the rated pressure, and the flow rate should not be less than 50% of the rated flow rate.
(6) The overcurrent cutoff surface of the fire pump should have anti-corrosion performance for the medium; It should have good vacuum sealing performance.
(7) The engine should have good room temperature starting performance, ensuring smooth starting within 5 seconds. Within 20 seconds after water is introduced, the fire pump should be able to reach its rated working condition, with room temperature ranging from 5 ℃ to 35 ℃.
(8) The water pressure test of the water pump is 1.5 times the maximum working pressure and lasts for 5 minutes. During the testing process, the pump casing should not have any defects such as deformation or cracks that affect performance.
(9) Pumps with pump casings made of cast iron, cast aluminum, or cast copper, and other overcurrent components made of highly corrosion-resistant materials such as stainless steel, bronze, or aluminum alloy, may not undergo corrosion resistance testing.
(10) The pump unit should undergo a 10 minute overload test. During the experiment, the pump unit should work normally without excessive vibration, oil leakage, or water leakage.