【 Weak current College 】 sprinkler system flow indicator of performance requirements and test methods---Power By 【 China power house network 】

Automatic sprinkler system flow indicator of performance requirements and test methods
1 topic content and scope of application
This standard provides for automatic sprinkler system flow indicator of technical requirements, test methods and test rules. This standard is applicable to automatic sprinkler system blade flow indicator, and other types of flow indicator should reference use.
2 reference standards
GB1842 polyethylene environmental stress cracking test method CB2423.3 electric and electronic products basic environmental testing regulations test Ca: constant damp heat test method GB57200X-rubber sealing ring test of standard methods
3 terminology
3.1 flow indicator for automatic sprinkler system will flow signal conversion to electrical signals of an alarm device. 3.2 delay caused by water flowing movements to drive parts began a beep signal during this time. 3.3 sensitivity-driven flow indicator alarm signal of minimum water flow.
4 specification flow indicator nominal diameter 25, 50, 65, 80, 100, 125, 150, 200mm. 5 technical requirements
5.1 biggest working pressure
Flow indicators of the maximum working pressure is 1.2MPa. 5.2 latency performance
5.2.1 a delay function in the flow meter delay time can be adjusted. 5.2.2 flow indicator in accordance with 6.2 to experiment. The measured latencies should be in the range 2-90;. 5.3 work cycle
5.3.1 flow indicator in accordance with 6.3 to experiment. After 500 cycle the action, the test should act sensitively and quickly reset. 5.3.2 test after test after 6.8 sensitivity, test result shall conform to the provisions in article 5.8. 5.4 corrosion resistance
Flow indicators in accordance with article 6.4 corrosion test, test its any part not impact performance of corrosion damage such as cracks. Test after test after 6.8 sensitivity, test result shall conform to the provisions in article 5.8. 5.5 rigid nonmetallic materials
5.5.1 flow indicator part if adopting rigid nonmetallic materials, rigid nonmetallic materials components should be carried out by 6.5.1 air aging test. 5.5.2 rigid nonmetallic material parts 90 ± 2 ℃ 7d or 70 ± 2 ℃ 28d air aging test, the test pieces shall appear curved, creep, cracks or other implications damage water flow indicator function. 6.5.3 If the blades used polyethylene material is polyethylene leaves should be tested by section 6.5.2, determination of the resistance to environmental stress cracking ability, test blade should be no cracks. 5.6 shock resistance
5.6.1 flow indicator should be carried out in accordance with 6.6 impact test, three 6.8J energy impact, there shall be no loose parts and impede flow indicator moves. Trial, should be carried out by 6.8 sensitivity testing, test result shall conform to the provisions in article 5.8. 5.6.2 test should check current indicator of shell, if shell breakage without affecting the flow indicator action, is eligible. If the shell is used for dust or moisture-proof, and shell fracture, flow indicator is not qualified. 5.7 elastic non-metallic gaskets anti aging properties of flexible nonmetallic water seals should be carried out by 6.7 water aging test, o-rings. Test you should check the gasket and fixture shall appear between loose, bonding and sealing pad brittle, soft phenomenon.
5.8 sensitivity
5.8.1 flow indicator should be carried out by 6.8 sensitivity test, test results shall meet the following requirements: a £ ® flow less than, equal to 15.0L/min, flow indicator should not be alert; b £ ® alarm volume should be at 15.0L/min to 37.5L/min value, between arbitrary to 37.5L/min, you must alert; c £ ® alarm flow should not be greater than 37.5L/min. 5.8.2 test pressure range in 0.14-l.20MPa. 5.9 hydraulic friction loss flow indicator by 6.9 hydraulic friction tests carried out. Test tube in the water velocity is 4.5m/s of water flow indicator hydraulic friction pressure loss shall not exceed 0.02MPa.
5.10 resistance to water impact performance
5.10.1 flow indicator should be carried out by 6.10 water impact testing, water should be reset after impact. 5.10.2 test should be carried out by 6.8 sensitivity testing, test result shall conform to the provisions in article 5.8. Resistance to water pressure performance 5.11
Flow indicator by 6.11 hydraulic test carried out. In hydraulic, continuing 2.4MPa 5min, no leakage, no rupture and permanent deformation or damage occurred. 5.12 overload ability
Flow meter tests by 6.12, the component shall not overheat burned down, hang point or contact adhesive. 5.13 voltage and insulation resistance
5.13.1 flow indicator by 6.13 for voltage capacity determination, in the test set out in article 6.13.3 voltages, in the following parts should withstand voltage 60 s 5; not breakdown. A £ ® all moving parts and stationary metal parts (including shell); b £ ® in different voltages and frequencies of circuit between the moving parts. 5.13.2 flow indicator by 6.13 for insulation resistance test, in the following parts of insulation resistance should be greater than 2 M Ω. A £ ®-contact is disconnected, with very into line with the outlet; b £ ® contact closure, various extremely charged parts, contacts and coils and control circuits; c £ ® the live parts and metal bracket (including shell).
6 test method
6.1 appearance inspection
6.1.1 specimen labels should be complete, in compliance with Chapter 7 logo requirements. 6.1.2 control design drawings, process documents, samples and drawings. 6.1.3 test specimen of process consistency, eye test pieces have no processing defects and mechanical damage. 6.2 latency performance test
Will flow indicator according to the normal operating position is installed in the test tube,Alarm traffic that leaves actions, measuring latency, test result shall conform to the provisions of article 5.2. 6.3 work cycle test
Will flow indicator according to the normal operating position is installed in the test tube, alarm traffic through 500 cycle the action, each work cycle including driver leaves action alert, and then reset. Test result shall conform to the provisions in article 5.3. 6.4 corrosion test
6.4.1 is a specimen on the chemical corrosion test chambers, a work room press volume ratio per 24h joined 0.5 per cent of the SO2. In the Studio at the bottom, with a flat bottom big mouth containers container into enough distilled water, let it be volatile to form a wet environment, test the temperature at 25 ± 5 ° c, the test duration 10d. 6.4.2 the specimen suspension in the Studio at the middle part of the specimen at upper 5cm overlays, avoid Studio top coalesces liquid drops in the specimen. 6.4.3 testing out, after the specimen is placed 25 ± 5 ° c ambient temperature, the duration, and then check the specimen 24h, test result shall conform to the provisions in article 5.4. 6.5 rigid nonmetallic materials testing
6.5.1 the 1-piece rigid nonmetallic materials part on the air oven, sample in oven should not contact with the Chamber wall. The oven preheated to ageing temperature 90 ± 2 ℃ temperature ageing lasting 7d or 70 ± 2 ℃ lasted 28d. Then the test specimen is placed after the temperature of 20 ± 5 ° c in the air, cooling after check specimen, 24d test results, should be consistent with section 5.5.2. 6.5.2 adds 3 only polyethylene blade immersion reagents, test temperature of 50 ± 2 ° c, after checking the blade 48h test shall be in accordance with the provisions of section 5.5.3. Selection of reagent shall be in accordance with the provisions in the GB1842. 6.6 impact test
6.6.1 will a specimen fixed on the test bench, in the case of three mutually perpendicular direction imposed 6.8J of impact energy, once for each direction of impact. 6.6.2 test using a steel ball 0.54kg, test specimen, after inspection, the test result shall conform to the provisions in article 5.6. 6.7 elastic non-metallic gasket water aging test
6.7.1 get three specimens of this test. 6.7.2 will take each specimen 25mm long part two dimensions to the aluminum sheet 76mmX24mmX9mm, Centre distance between the two bolts 38mm will clamp the specimen, the specimen thickness to two thirds, are shown in Figure 1. 6.7.3 and fixture at 87 ± 2 ℃ of water, which lasted 90d. Test, check out the fixture, the specimen should be consistent with the provisions in article 5.7. 6.7.4O-rubber sealing ring of physical performance test requirements by GB5i20, and should be consistent with the corresponding requirements. Figure 1 elastic non-metallic gaskets test load fixture 6.8 sensitivity test
Be a part of the normal work location to test the pipeline, slowly adjusting test pipe flow until flow indicator movement alarm signal. The flow value should be consistent with the provisions in article 5.8. 6.9 hydraulic friction loss test
6.9.1 will flow indicator according to the normal operating position is installed in a test tube, on both sides of the specimen must provide at least the same tube width straight pipe segment. In the tested pieces on both sides of the pipeline from the same location on the specimen set two pressure taps for differential pressure measurement. 6.9.2 flow regulation, so that the test tube test pipe velocity to 4.5m/s, with pressure gauge measurement between two pressure taps in △ p1 pressure value. 6.9.3 remove specimens will be a straight pipe in place of the same pipe flow indicator, the straight pipe should advance measurement in 4.5m/s velocity hydraulic friction loss △ p0, 4.5m/s velocity measurement between two pressure taps pressure value △ P2. 6.9.4 flow indicator of hydraulic friction loss △ p can be calculated from the following type: △ △ p = p1-p2 + △ △ p0 hydraulic friction loss should be consistent with the provisions of article 5.9. 6.9.5 flow measurement and pressure difference measurement accuracy is ±0.2%. 6.10 water impact test
6.10.1 will be measuring the flow indicator according to the normal operating position is installed in the test lines, adjust the water flow to rapid rise from 0 to 5.4m/s that keep this velocity 10s, and then quickly will flow down to 0. 6.10.2 test specimen should be after a sensitivity test 6.8, test result shall conform to the provisions in article 5.8. 6.10.3 will been 6.10.1 and 6.10.2 described two pilot flow indicator reverse installation, 50 times the reverse impact, each time the maximum reverse impact velocity is positive to 50 per cent, each impact should maintain 10s, and then follow the sensitivity test of the 6.8, test result shall conform to the provisions in article 5.8. 6.11 hydraulic test
Will flow indicator installed in the normal operating position and is full of water, slowly rose to the pressure and to maintain 5min 2.4MPa and check the samples, test result shall conform to the provisions in article 5.11. 6.12 overload test
6.12.1 flow indicator that a per-minute six cycles of frequency 500 cycles. Test to be applied on contact voltage contacts rated voltage, test current contact rated current of 150 per cent. 6.12.2 different types of water flow indicator should be carried out under the following conditions: (1) has several contacts rated voltage and single contacts rated current of water flow meter, test voltage should choose contact maximum voltage rating; (2) has several contacts rated current of water flow indicator, should include contact highest rated voltage, maximum power condition to experiment. If flow indicator with AC and DC contacts rated current, water flow indicator should be in the rated current for each contact to test. Each test using different specimens. 6.12.3 for the AC control circuit flow indicator for testing, you should use inductive load and power factor 0.6. 6.12.4 test specimen after inspection, the test result shall conform to the provisions in article 5.12. 6.13 voltage and insulation resistance test
6.13.1 the flow indicator according to the normal operating position is installed in the test device. 6.13.2 conducted first by CB2423.3 two cycles constant damp heat test. Each cycle to 24h. Constant damp heat test conditions: temperature 40 ± 2 ° c, relative humidity (93 ^ + 3-3) per cent. Test should be carried out by 6.13.4 6.13.3 and pressure capacities and insulation resistance test. 6.13.3 voltage capacity determination 6.13.3.1 this test tests the power adopts 50Hz sinusoidal AC power supply, voltage should be met: a for rated voltage is below the water flow meter adopts 50V 500V; B £ ® for a nominal voltage greater than, equal to the current indicator uses 50V 1500V. 6.13.3.2 test voltage of 100-500V/s with boost rate from zero to the value of the test voltage requirements, maintaining the 60 ± 5s and check the samples, test result shall conform to the provisions in article 5.l3.1. 6.13.4 insulation resistance test, 6.13.4.1 flow indicator in 5.13.2 stipulates part imposed between 500 ± 50VDC, continuous measurement 60 ± 5s after the insulation resistance. 6.13.4.2 measurement of insulation resistance of the test apparatus shall meet the following technical requirements: a test voltage:. 500 ± 50VDC: b £ ® measuring range: 0-500 M Ω; c £ ® minimum indexing: 0 £ ® l M Ω d £ ® timing: 60 ± 5s. 6.4.3 measurement result shall conform to section 5.13.2
7 inspection rules
7.1 product manufacturing unit should develop and adhere to quality control procedures to ensure that each batch of products are in line with the provisions of this standard. 7.2 test classification 7.2.1 product type test should be carried out according to this standard stipulates all projects examined. 7.2.2 products factory inspection should be carried out according to the provisions of this standard by 6.1, 6.2, 6.8, 6.11 various pilot. 7.2.3 number of samples and test procedures according to the requirements of Figure 2. 7.4 test results of all the products are subject to this 7.4.1 standard 6.1-6.13 articles, that the product is qualified for 7.4.2 product does not meet this standard 6.8, 6.10, 6.11 bar a product found to be ineligible. The remaining non-qualified, allow double sampling inspection, a defective product is liable for the non-conforming product. Figure 2 testing for figure Note: ① number in the box to test serial number 6.1-Visual inspection; 6.2-delay performance test; 6.3-work cycle test; 6.4-corrosion test; 6.5-rigid nonmetallic materials testing; 6.6-shock test; 6.7-elastic non-metallic gasket aging test; 6.8-sensitivity test; 6.9 a hydraulic friction loss test; 6.10-water impact test; 6.11-hydraulic test; 6.12-overload test; 6.13-voltage and insulation resistance test-6.14-spare part numbers in ② circle to test the required number of the specimen.
8 signs
Flow indicators should have clear, durable labels, including: a the name and product specifications and models; b £ ® manufacturer's name or trademarks; c £ ® pressure; d £ ® sensitivity; c £ ® flow direction; f. the electricity performance indicators; g. production date and the production number.