Abstract: As the name suggests, fire pumps are pumps used for fire protection. They are used to pump various liquids. They are ideal pumps for creating leak-free, pollution-free civilized workshops and civilized factories. Fire pumps are widely used in environmental protection, water treatment, fire protection and other departments due to their fully sealed, leak-free and corrosion-resistant characteristics. Fire pumps are divided into different types according to different classification methods. Let’s learn about the relevant knowledge of fire pumps. 1. Classification of fire pumps
(1) By use
1. Motorless fire pumps
Rely on the rotation of the impeller to transfer energy to the liquid. Fire pump with power source.
2. Vehicle fire pump
A non-powered fire pump installed on the chassis of a fire truck.
3. Marine fire pump marinefirepump
A non-powered fire pump installed on ships, offshore working platforms, and water working environments.
4. Engineering-oriented fire pump
Fire pumps used in fire hydrant systems, sprinkler fire extinguishing systems, foam fire extinguishing systems and other engineering sites.
5. Low-pressure fire pump normalpressurefirepump
A fire pump with a rated pressure not greater than 1.6MPa.
6. Middlepressure firepump
A fire pump with a rated pressure between 1.8MPa~3.0MPa.
7. Highpressure fire pump
A fire pump with a rated pressure of not less than 4.0MPa.
8. Middle and normal pressure fire pump
A fire pump that can provide both medium and low pressure at the same time.
9. High and normal pressure fire pump
A fire pump that can provide both high pressure and low pressure at the same time.
10. Supplyingfirepump
An engineering fire pump used for fire water supply.
11. Pressuremaintainingfirepump
An engineering fire pump used to stabilize the pressure of the pipe network.
12. Foam liquid fire pump foamconcentratefirepump
An engineering fire pump used to transport foam fire extinguishing agents. For example, in a balanced pressure foam proportioning mixing device, a foam fire extinguishing agent is transported Provide foam liquid pump.
13. Deepwell fire pump deepwell firepump
An engineering fire pump using a vertical deep well pump.
14. Submersible fire pump submersible fire pump
An engineering fire pump using a submersible pump.
15. General fire pump
Engineering fire pumps except deep well and submersible fire pumps.
(2) According to composition
1. Fire pump set firepumpset
A fire pump with a power source generally consists of a set of fire pumps, power source, It consists of control cabinet and auxiliary devices.
2. Supplyingfirepumpset
A fire pump set using a water supply fire pump.
3. Pressuremaintainingfirepumpset
A fire pump set using a pressure-regulated fire pump.
4. Deepwell firepumpset
A fire pump using a deep well fire pump.
5. Submersible fire pump set submersible fire pump set
A fire pump set using submersible fire pumps.
6. General fire pump set general fire pump set
A fire pump set using ordinary fire pumps.
7. Hand-carrying mobile fire pump set portable firepumpset
Originally known as hand-carrying mobile fire pump, it is a fire pump set that can be carried manually and assembled with a light engine.
2. How to view the fire pump model parameters
(1) Unpowered fire pump
The unpowered fire pump model consists of the pump characteristic code, main parameters, and purpose It consists of five parts: feature code, auxiliary feature code and enterprise-defined code. Its composition is as follows:
The definitions are as follows (in order):
Pump characteristic code
Main parameters
Purpose characteristic code
p>Auxiliary feature code
Enterprise custom code
For example: the meaning of fire pump XQB3.3/30-125-160
XQB is Represents fire-fighting regulated water supply equipment
3.3——0.33MPa
30——30L/S
125——Pump inlet and outlet diameter (mm)
160——Nominal diameter of impeller (mm)
(2) Fire pump set
The fire pump set model consists of pump characteristics, pump set feature code, main parameters, It consists of six parts: application feature code, auxiliary feature code and enterprise-defined code. Its composition is as follows:
The definitions are as follows (in order):
Pump characteristic code
Pump group characteristic code
Main parameters
Purpose feature code
Auxiliary feature code
Enterprise custom code
2.3 The representation of each feature code is shown in Table 1
Table 1
Feature code
Pump characteristics
Vehicle fire pump CB
Marine fire pump HB
Hand-lifted motorized fire pump unit JB
Engineering fire pump XB
Other fire pump TB
Pump unit characteristics
Diesel engine C
Electric motor D
Gas turbine R
Gasoline engine Q
Main parameters (pressure/flow) 10×rated pressure/ Rated flow rate
Usage characteristics
Stabilized pressure W
Water supply G
Foam liquid supply P
Auxiliary characteristics
Deep well pump J
Submersible pump Q
Ordinary pump omitted
The rated pressure unit in 2.4 main parameters is MPa, and the rated flow unit is The L/s
2.5 model is being compiled. For multi-purpose products, the usage characteristics do not need to be marked.
Examples of the 2.6 model are as follows
a Engineering fire pumps, The rated pressure is 0.78MPa, the rated flow rate is 20L/s, and its model is XB7.8/20
b high and low pressure vehicle fire pump. The high pressure rated pressure is 4.0MPa and the low pressure rated pressure is 1.0MPa. The high-pressure rated flow is 6L/s, the low-pressure rated flow is 40L/s, and its model is CB4010/640
c. It is used for water supply and is driven by a diesel engine. The rated pressure is 0.85MPa and the rated flow is 30L/s. The deep well fire pump unit, its model is XBC8.5/30GJ
d gasoline engine driven, rated pressure is 0.80MPa, rated flow is 10L/s hand-held motorized fire pump unit, its model is JBQ8. 0/10
National Standard of the People’s Republic of China GB6245-2006 Fire Pumps