Some standard content:
ICS 13.220.01
National Standard of the People's Republic of China
GB 19156—2003
General specifications for fire monitors
General specifications for fire monitors2003-05-23Promulgated
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on 2003-09-01
Chapter 5 and 6.3, 6.4 and 6.5 of Chapter 6 of this standard are mandatory provisions, and the rest are recommended provisions. GB19156--2003
Since there is no international standard for fire monitors, this standard is compiled based on the current domestic production and use of fire monitors and the existing technical level, and taking into account the development trend of fire monitors, with reference to the second part of German DIN14366-1984 "Base-launched foam spray guns", the former Soviet Union's rOCT9029-72 "Technical conditions for combined guns", and the United States NFPA412-1993 "Airport rescue and foam fire extinguishing equipment" and other relevant foreign standards.
This standard is proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the Fourth Technical Committee of the National Fire Standardization Technical Committee. The drafting unit of this standard: Shanghai Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard: Shi Xingtang, Jiang Xudong, Li Houlin, Wang Yongfu, Xue Lin. This standard is entrusted to the Shanghai Fire Science Research Institute of the Ministry of Public Security for interpretation. 1 Scope
General Technical Conditions for Fire Monitors
GB19156—2003
This standard specifies the classification and marking, performance parameters, performance requirements, test methods and inspection rules of fire monitors. This standard applies to all types of fire monitors.
2 Normative References
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced documents, the latest version shall apply to this standard GB/T1173 Cast aluminum alloys
GB/T1176 Technical conditions for cast copper alloys (GB/T1176-1987, neqISO1338:1977) GB/T1348 Ductile iron castings
GB7956-1998 Fire performance requirements and test methods for fire trucks GB/T9439 Grey cast iron castings
3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Fire monitor
A device that sprays fire extinguishing agents in the form of a jet with a flow rate of water and foam mixture greater than 16L/s, or a dry powder spray rate greater than 7kg/s. Fixed fire monitor A fire monitor mounted on a fixed support, including a fire monitor fixedly mounted on a fire truck. mobile or portable fire monitorMobile fire monitor
Fire monitors installed on movable supports, including fire monitors fixedly installed on trailers. 4 Classification and marking
4.1 Classification
4.1.1 According to the spraying medium, it can be divided into:
Fire water monitor (hereinafter referred to as water monitor);
Fire air foam monitor (hereinafter referred to as foam monitor); b)
Fire dry powder monitor (hereinafter referred to as dry powder monitor). 4.1.2
According to the control method, it can be divided into:
Manual fire monitor;
Electrically controlled fire monitor;
Hydraulically controlled fire monitor.
4.1.3 According to the use function, it can be divided into:
Single-purpose fire monitor;
GB19156—2003
Dual-purpose fire monitor;
Combination fire monitor.
4.1.4 According to the way of foam liquid inhalation, it can be divided into: a) self-priming foam monitor;
b) non-self-priming foam monitor.
4.2 Marking
The model of the fire monitor consists of class, group code, characteristic code, marine code (land use omitted) and main parameters. 口
Custom
Self-priming code Z (non-self-priming omitted)
Main parameters (L/s, kg/s)
Marine code C (land use omitted)
Characteristic code (manual omitted)
Class, group code
Class, group code:
PP——foam monitor;
PS—-water monitor;
-foam/water dual-purpose monitor;
-dry powder monitor;
combination monitor.
Characteristic code:
KY——hydraulic control;
KD—electrical control;
Y——mobile type (fixed type omitted).
The main parameter of the fire monitor should be the rated flow rate of the monitor or the effective spray rate of dry powder. The combined monitor should first mark the foam mixture flow rate, and then the water flow rate or the effective spray rate. The foam mixture flow rate and the water flow rate are separated by a slash "/", and the foam mixture flow rate and the effective spray rate are separated by a horizontal line "". Example 1: The spray medium is water, and the rated flow rate is 30IL./s. The manual fixed water monitor is expressed as PS30. Example 2: The spray medium is a foam mixture, and the rated flow rate is 48L/s. The hydraulically controlled marine foam monitor is expressed as PPKYC48. Example 3: The spray medium is a foam mixture, and the rated flow rate is 24L/s. The manual, self-priming, mobile foam monitor is expressed as PPY24Z. Example 4: The spraying medium is foam mixture and water, the rated flow rate of foam mixture is 32L/s, and the rated flow rate of water is 30L/s, which is expressed as PZ32/30.
Example 5: The spraying medium is foam mixture and dry powder, the rated flow rate of foam mixture is 48L/s, and the effective spray of dry powder is 25kg/s, which is expressed as PZ48-25. 5 Performance parameters
5.1 The rated working pressure of each flow section of water monitor, foam monitor and dual-purpose monitor should comply with the specified range of Table 1, Table 2 and Table 3 respectively, and other corresponding parameters should comply with the provisions of Table 1, Table 2 and Table 3 respectively. The rated working pressure of each flow section of water monitor, foam monitor and dual-purpose monitor is allowed to exceed the upper limit value of Table 1, Table 2 and Table 3, but shall not exceed 1.6MPa. When the pressure exceeds the upper limit by 0.1MPa, the corresponding range shall be increased by 5m, 2
The other parameters remain unchanged
5.2 The performance parameters of the dry powder monitor shall comply with the provisions of Table 4. 5.3 The performance parameters of the combination monitor shall comply with the provisions of Table 1, Table 2 and Table 4. 5.4 The elevation and rotation angle of the fire monitor shall comply with the provisions of Table 5. 5.5 The horizontal rotation angle of the fire monitor shall comply with the provisions of Table 6. Table 1 Water monitor performance parameters
Flow rate/(L/s)
Rated working pressure upper limit/MPa
Note: For a water monitor with a direct current spray function, the maximum spray angle shall not be less than 90°. Range/m
Table 2 Performance parameters of foam monitor
Foam mixture flow rate/(L/s）
Rated working
Upper pressure limit/MPa
Range/m
Flow rate tolerance
Foaming multiple
(at 20℃)
GB 19156—2003
Flow rate tolerance
25% liquid separation time/min
(at 20℃)
Note: For the foam monitors in the table, the foam mixture is provided by external equipment, and its mixing ratio shall meet the requirements of 6%~7% or 3%~4%; for foam monitors equipped with self-priming devices, the range can be 10% smaller than that specified in the table, and its mixing ratio shall also meet the requirements of 6%~7% or 3%~4%. 3
GB19156—2003
Flow rate/(L/s)
Rated working
Upper pressure limit/MPa
Table 3 Performance parameters of dual-purpose gun
Range/m
≥100
Flow rate tolerance
Foaming multiple
(at 20℃)
25% liquid separation time/min
(at 20℃)
Note: For the dual-purpose guns in the table, the foam mixture is provided by external equipment, and its mixing ratio should meet the requirements of 6%~7% or 3%~4%; for the foam/water dual-purpose guns equipped with self-priming devices, its foam range can be 10% smaller than the range specified in the table, and its mixing ratio should meet the requirements of 6%~7% or 3%~4%. Table 4 Performance parameters of dry powder cannon
Effective spray rate/(kg/s)
Classification by usage
Ground fixed fire cannon
Conventional fire truck mounted fixed fire cannon
Elevated fixed fire cannon
Working pressure range/MPa
0.5～1.7
Elevation and rotation angle of fire monitor
Minimum elevation angle/(°）
Note: The elevation angle of mobile fire monitor shall at least meet the range of +30°～+70° or 0°～+45. Table 6 Horizontal rotation angle of fire monitor
Classification by usage
Ground fixed fire monitor
Elevated fixed fire monitor
Fixed fire monitor mounted on conventional fire truck
Mobile fire monitor with horizontal rotation
Effective range/m
Maximum elevation angle/(°)
≥+60
≥+45
≥+40
Horizontal rotation angle/(°）
≥180
≥270
6 Performance requirements
6.1 Appearance
6.1.1 The surface of the casting should be smooth, without cracks, pores, shrinkage holes, sand holes and other defects that affect the strength and performance. GB 19156-2003
6.1.2 The weld should be smooth and uniform, without incomplete penetration, burn-through, scars and other defects that damage the strength and appearance quality. 6.1.3 The paint layer on the outer surface of the fire monitor should be smooth and even, without bubbles, obvious flow marks, cracks and other defects that affect the appearance quality. 6.2 General performance of parts
6.2.1 The mechanical properties and chemical composition of the casting material shall comply with the relevant provisions of GB/T1173, GB/T1176, GB/T1348 and GB/T9439.
6.2.2 The fire monitor shall be made of corrosion-resistant materials or its materials shall be treated with anti-corrosion to meet the anti-corrosion requirements of the corresponding use environment and medium.
6.3 Maneuverability
6.3.1 The elevation and slewing mechanism, horizontal slewing mechanism and various control handles (wheels) of the fire monitor shall be flexible to operate, and the transmission mechanism shall be safe and reliable. The elevation and rotation mechanism of the fire monitor should have a self-locking function or be equipped with a locking device. 6.3.2 The mobile fire monitor should be stable and reliable when spraying at the minimum elevation angle within the entire horizontal rotation angle range, and there should be no slippage or tipping.
6.4 Water pressure sealing performance
After the pressure-bearing part of the fire monitor (except the foam monitor barrel) is subjected to a water pressure sealing test in accordance with the provisions of 7.4, there should be no leakage at all connecting parts.
6.5 Water pressure strength performance
After the pressure-bearing part of the fire monitor (except the foam monitor barrel) is subjected to the water pressure strength test in accordance with the provisions of 7.5, the gun body shall not have defects such as sweating, cracks and permanent deformation.
6.6 Setting of pressure gauge
The fire monitor shall be equipped with a pressure gauge at an appropriate position of the main diameter of the gun seat, and the accuracy of the pressure gauge shall not be lower than Class 2.5.7 Test method
7.1 Appearance inspection
Visual inspection of the appearance quality of the fire monitor shall comply with the provisions of 6.1. 7.2 Pitch and horizontal rotation angle test The pitch and horizontal rotation angles of the fire monitor shall be checked with an inclinometer, and the inspection results shall comply with the provisions of Tables 5 and 6.7.3 Fire monitor maneuverability test
The fire monitor action mechanism and the stability of the mobile fire monitor shall be checked at the maximum injection pressure, and the results shall comply with the provisions of 6.3.7.4 Water pressure sealing test||tt ||Before the water pressure sealing test, the pressure-bearing part of the fire monitor shall be closed, filled with water and the air shall be exhausted, and then the pressure shall be slowly increased to 1.1 times of the maximum working pressure and maintained for 3 minutes. The result shall comply with the provisions of 6.4. 7.5 Water pressure strength test
Before the water pressure strength test, the pressure-bearing part of the fire monitor shall be closed, filled with water and the air shall be exhausted, and then the pressure shall be slowly increased to 1.5 times of the maximum working pressure and maintained for 3 minutes. The result shall comply with the provisions of 6.5. 7.6 Measurement of spray angle
The spray angle can be measured by aligning the two sides of the angle gauge with the spray edge of the water monitor. The result shall comply with the provisions of Table 1. 7.7 Flow rate
7.7.1 Measurement of the flow rate of water monitor and foam monitor (using water instead of foam mixture) 7.7.1.1 Select the volume of an appropriate metering tank according to the flow rate of the water monitor or foam monitor, start the water pump to make the water monitor or foam monitor spray, and wait until it reaches 5
GB 19156-2003
After the rated injection pressure is reached and stabilized, turn to the metering tank for injection. The injection time shall not be less than 30s. Immediately move away, and then measure the volume or mass of the water in the metering tank, and calculate the flow rate of the water monitor or foam monitor. 7.7.1.2 Use a calibrated flowmeter to directly measure the flow rate. 7.7.1.3 Use the test method specified in 7.7.1.1 or 7.7.1.2 for measurement. The results shall comply with the provisions of Table 1, Table 2, and Table 3 respectively. The flowmeter measurement method shall be used as the arbitration method.
7.7.2 Effective injection rate measurement of dry powder monitor
Effective injection rate of dry powder monitor The measurement shall be carried out in accordance with the provisions of 5.17.6 of GB7956-1998, and the results shall comply with the provisions of Table 4. 7.8 Measurement of the range of water monitors and foam monitors
7.8.1 Test conditions
The measurement of the range of water monitors and foam monitors shall be carried out on a flat site. During the test, a pressure gauge shall be installed at the inlet of the monitor, and the accuracy of the pressure gauge shall not be less than Class 1.5. The elevation angle of the water monitor or foam monitor is 30°±2°. The vertical distance from the outlet of the water monitor or foam monitor to the ground shall not exceed 3m. The spray shall be sprayed in the direction of the wind, and the wind speed shall be less than 2m/s. The range shall be measured with the intersection of the plumb line of the outlet of the water monitor or foam monitor and the ground as the origin (starting point). 7.8.2 Test operation
Start the water pump to make the water monitor or foam monitor spray in the wind direction. When the inlet pressure of the water monitor or foam monitor reaches the rated working pressure and stabilizes, use a stopwatch to measure the farthest point of the medium that continuously sprinkles for no less than 10s. The distance between this point and the origin is the range of the water monitor or foam monitor. The measured range of the water monitor or foam monitor should comply with the provisions of Table 1, Table 2, and Table 3. 7.9 Determination of mixing ratio
Using the characteristics of different concentrations of foam mixed liquids with different refractive indices, a refractometer is used to determine the mixing ratio. The specific method is as follows: Make a calibration curve. Take out the test foam liquid with a dropper, drop 3mL, 6mL, and 9mL of foam liquid into three 100mL measuring cylinders respectively, then add the test water to each measuring cylinder to 100mL, make 3%, 6% and 9% standard concentrations of foam mixed liquid, mix them thoroughly, read the scale numbers on the refractometer respectively, and make a calibration curve of the refractometer scale number and the concentration of the foam mixed liquid on the coordinate paper. Use the precipitate of 7.10 as the sample, read the scale number on the refractometer, and find the mixing ratio of the sample from the calibration curve. The mixing ratio should comply with the requirements of Table 2 and Table 3.
7.10 Determination of foaming multiple and 25% precipitation time 7.10.1 Special test device
7.10.1.1 The structure and main dimensions of the foam collector are shown in Figure 1. The collector is made of 2mm thick aluminum plate. Unit: mm
1--Foam collection plate;
2-Handle;
3-Guide partition.
Figure 1 Foam collector
GB 19156--2003
7.10.1.2 The structure and main dimensions of the foam receiver are shown in Figure 2. The receiver body is made of 0.5mm thick brass plate, with a volume of 1600mL ± 20mL. A transparent glass switch is installed in the center of the bottom, with a diameter of 6.4mm. The unit is millimeter
1--Receiver body;
Switch.
Figure 2 Foam receiver
7.10.2 Test steps
7.10.2.1 Sampling
The foam cannon sprays in other directions first, and then turns to the foam collector after reaching the rated working pressure and stabilizing. When the foam receiver is full of foam, stop spraying and start timing. Use a scraper to scrape off the excess foam on the top and wipe the outer surface. The sampling is completed. 7.10.2.2 Determination of foaming multiple
Weigh the mass of the receiver filled with foam and calculate the foaming multiple using formula (1): N
Wherein:
Foaming multiple; bzxZ.net
Volume of the foam receiver, in milliliters (mL); -Total mass of the foam receiver when it is filled with foam, in grams (g); Mass of the foam receiver, in grams (g), density of the mixed liquid, take 1.0g/mL.
7.10.2.3 Determination of 25% liquid separation time
Put the measuring cup on the scale (accurate to 1g) and peel it. Put the foam receiver containing the sample on the bracket, turn on the switch at the bottom of the receiver to allow the precipitated liquid to flow into the measuring cup. When the amount of foam mixed liquid in the measuring cup is equal to W, stop timing and record the 25% liquid separation time. W, = (W.-W.)X25%
Wherein:
25% precipitate mass, in grams (g). 7.10.2.4 Correction of the influence of test temperature
The temperature of water in the foam mixture has a great influence on the foaming multiple and the liquid extraction time. Therefore, the water temperature should be controlled within the range of 15℃～25℃ as much as possible during the test. If it is necessary to test beyond this temperature range, the following corrections should be made to the protein foam fire extinguishing agent: Foaming multiple--When the temperature of the mixed liquid is greater than 20℃, no correction is made; when the temperature of the mixed liquid is less than 20℃, the foaming multiple increases by 0.1 for every 1.7℃ decrease.
Liquid extraction time-
-When the temperature of the mixed liquid is greater than 20℃, the liquid extraction time increases by 0.1min for every 1.7℃ increase; when the temperature of the mixed liquid is less than 20℃, the liquid extraction time decreases by 0.1min for every 1.7℃ decrease. 7
GB 19156—2003
7.10.3 Result determination
The measured foaming multiple and 25% liquid extraction time should comply with the provisions of Table 2 and Table 3. 7.11 Measurement of effective range of dry powder monitor
The measurement of effective range of dry powder monitor shall be carried out in accordance with the provisions of 5.17.4 of GB7956-1998, and the results shall comply with the provisions of Table 4. 8 Inspection rules
8.1 Factory inspection
8.1.1 Fire monitors shall be inspected before leaving the factory. 8.1.2 Factory inspection shall be carried out in accordance with the provisions of 6.1, 6.3, 6.4, 6.5 and 6.6, and the results shall comply with the provisions of this standard. 8.2 Type inspection
8.2.1 Type inspection shall be carried out in any of the following cases: new product identification or old product transfer;
b) after formal production, when there are major changes in raw materials, processes and designs;
when production is resumed after a year of suspension or when normal production has been in place for two years; d) when the national quality supervision agency proposes a type inspection requirement. 8.2.2 The content of type inspection shall be all items specified in this standard, and the inspection results shall meet the requirements of the standard. 9 Marking, packaging, transportation and storage
9.1 Marking and instruction manual
9.1.1 Marking
The product shall be equipped with a nameplate with clear fonts and the following contents: a) Product name;
Model;
Rated working pressure and maximum allowable working pressure; c)
d) Manufacturing date, factory number;
e) Factory name or trademark;
f) Implementation product standard number.
9.1.2 Instruction manual
The product shall be accompanied by an instruction manual, which shall include the main technical parameters, maintenance, operating procedures and precautions. 9.2 Packaging
9.2.1 The documents accompanying the product packaging shall be complete, including instruction manual, certificate of conformity, packing list, list of random accessories, etc. 9.2.2 Packaging: After being wrapped in plastic film, it is packed in wooden boxes and marked with precautions. 9.3 Transportation: During transportation, the product should be lifted at the specified position to avoid collision damage. 9.4 Storage: The product should be stored in a cool and dry place.
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