GB 5135.16-2010Automatic sprinkler systems - Part 16: Flexible sprinkler hose with fittings (English PDF)

6.1 Appearance quality

6.1.1 Fire Sprinklers hose should be provided with the outer surface of permanent signs, clear signs, which shall comply with the provisions of 9.1.

6.1.2 Fire sprinkler hose fittings and look no machining burrs or damage nets network spent should be evenly distributed, its surface should be smooth, It does not allow folding, distortion and other defects, does not allow off (lack of) silk phenomenon. No metal sleeve surface of the hose does not allow delamination, bubbles, inclusions, Scale, rust, cracks, pits sharp corners, sharp folds and other defects.

6.2 Rated Operating Pressure Rated working pressure of the sprinkler hose should be not less than 1.2MPa.

6.3 Material Fire Sprinklers flexible hose wetted parts in contact with the water should not be lower than the corrosion resistance of austenitic stainless steel material manufacture, gold Genus joints and nets should be used in corrosion-resistant material or treated with preservatives.

6.4 Structure and size

6.4.1 Fire Sprinklers threaded hose connection, shall comply with GB/T 7306's.

6.4.2 Fire Sprinklers end of the hose shall be provided for fixing the component or structure.

6.4.3 Fire Sprinklers hose length limit deviations shall comply with the provisions of GB/T 14525 of.

6.5 Elongation deformation According to the method specified in

7.2 is extended tests, the sprinkler hose elongation shall not exceed 5% before the test.

6.6.1 According to the method specified in

7.3 bending fatigue test, fire sprinkler hose should bend sensitivity, no damage.

6.6.2 Before the test according to the method prescribed

7.11 an equivalent length of the test, the length should not exceed the equivalent bending fatigue test 5%.

6.7 alternating water resistant impact property

7.4 according to the method prescribed conduct alternating water impact testing, the sprinkler hose should leakage and damage.

6.8 vibration resistance

6.8.1 according to the method specified in

7.5 of the vibration test, any part of the sprinkler hose can not be damaged Performance.

6.8.2 After the test the hydrostatic strength test according to the provisions of 7.8, the test results shall comply with the requirements of 6.11.2.

6.9 environmental resistance When the sprinkler hose containing seals (eg O-rings) shall be carried out environmental testing method specified in 7.6, the sealing ring should be no infiltration Leakage after seal test should be no rupture, significant deformation or damage.

6.10 Gas Seals

7.7 according to the method prescribed gas seal test carried out, the sprinkler hose specimen surface should be no leakage of air bubbles.

6.11 Seal strength 6.11.1

7.8 according to the method prescribed hydrostatic seal test, at 2 times the rated working pressure, to maintain 5min, the sprinkler hose should be no leakage. 6.11.2

7.8 according to the method prescribed hydrostatic strength test at 4 times the rated working pressure, to maintain 5min, the sprinkler hose should be no Leak, rupture damage.

6.12 Vacuum resistance performance 6.12.1

7.9 according to the method prescribed by vacuum test, the sprinkler hose should be no vacuum pressure loss damage or deformation phenomena.

6.12.2 After the test according to the method specified in

7.8 hydrostatic strength test, the test results shall comply with the requirements of 6.11.2.

6.13 anti-impact properties of water

7.10 according to the method prescribed flow impact test carried out, the sprinkler hose and accessories should not be deformed any damage to the phenomenon. 6.14

--- loss of local resistance equivalent length notation

7.11 according to the method prescribed for local resistance loss test, according to equation (1) to calculate the loss of local resistance, according to equation (2) is equivalent to the calculated Nominal length of 25mm diameter pipe. Fire sprinkler hose deviation equivalent length should not exceed 10% of the companies published values. p = Q 10K12- Q2 10K22 (1) Where. p

--- loss of local resistance, in megapascals (MPa); Q

--- flow, in liters per minute (L/min), this formula is taken Q = 113.55L/min; K1

--- end of the assembly of the sprinkler hose sprinkler flow coefficient; K2

--- separate sprinkler flow coefficient. L = pFC (2) Where. L

--- equivalent length in meters (m); p

--- loss of local resistance, in megapascals (MPa); FC

--- taken by the Hazen-Wiliam formula C = 100 when the corresponding pipeline unit DN25 friction loss (flow 113.55L/min When, FC = 8.732 × 10-3).

7.1 Visual inspection

7.1.1 eye test sample flag case, the recording mark content.

7.1.2 Check the specimen process uniformity, the presence or absence of the test piece mesh processing defects and mechanical damage.

7.2 Elongation Test Use gaging initial sample length, then the sample closed at one end filled with water, the charge-pressure rated working pressure, measured at this time The test length.

7.3 bending fatigue test

7.3.1 The length of the sample according to equation (3) is calculated. L = 4R A1 A2 8D (3) Where.

--- Hose length L of the sample in millimeters (mm); R

--- Hose minimum bending radius, in millimeters (mm); A1, A2

--- samples rigid end hose length, in millimeters (mm); D

--- hose nominal diameter in millimeters (mm). (3) calculation of the actual length of the sample as

7.3.2 to meet the length of the formula, as shown in Figure 1 a bending test. The fire sprinkler hose bent into a U Font, connectors at both ends parallel to and spaced 2r (factory announced minimum bend radius). The end fittings fixed and the other end of the move up and down, up and down Range of movement each sprinkler hose nominal diameter of 4 times, bending frequency of 5 times per minute to 30 times, a total of 50,000 tests, the test sample Internal rated working pressure should be filled with water pressure, check the sample cases. FIG. 1 U-shaped bend test schematic (3) calculation of the actual length of the sample as

7.3.3 not satisfy the formula length, as shown in Figure 2 a bending test. The end of the hose Fire Sprinklers solid Fixed, and the other end to do side to side. Swing angle alpha according to equation (4) calculation, the bending frequency of 5 to 30 times per minute, a total of 50,000 trials, the test When the internal test specimens shall be filled with the rated working pressure of the water pressure, check the sample cases.

2 a schematic diagram swing bending test

alpha = L-4D-A1-A2piR × 180 ° (4) Where. alpha

--- swing angle in degrees (°);

8.1.1 Type inspection

8.1.1.1 When one of the following conditions, type of inspection should be carried out.

a) identification of new product trial when stereotypes;

b) After officially put into operation, such as a significant change in processing methods of product structure, materials, processes, the key processes when;

c) the quality of major accidents;

d) Product Discontinuance more than one year, the production recovery;

e) quality supervision agency when requested.

8.1.1.2 Product type test items shall be specified in Table 2.

8.1.2 factory inspection Delivery inspection items should include at least the items specified in Table 2. Table 2 type test items, factory inspection items and substandard category Inspection items and contents Type Test items Factory inspection project failed category A full inspection sampling Class B Appearance quality (6.1) - - - - - Rated working pressure (6.2) - - - - - Materials (6.3) - - - - - Structure and size (6.4) - - - - - Elongation deformation (6.5) - - - - - Bending fatigue performance (6.6) - - - - - Water resistant to alternating impact properties (6.7) - - - - - Vibration resistance (6.8) - - - - - Environmental resistance (6.9) - - - - - Airtight (6.10) - - - - - Seal strength (6.11) - - - - - Anti-vacuum performance (6.12) - - - - - Anti-impact properties of water (6.13) - - - - -

--- Loss of local resistance equivalent length notation (6.14) - - - - -

8.2 Sampling Method

8.2.1 Type inspection inspection sample quantity is 10.

8.2.2 factory inspection as per 100, each batch of samples randomly selected number is two.

8.3 Test Procedure Fire sprinkler hose test program conducted in accordance with FIG. 4.

8.4 test results to determine

8.4.1 Type inspection Fire sprinkler hose type test is judged if one of the following occurs when the product is defective, the product is judged otherwise qualified.

a) A category appeared project failed;

b) Class B non-conformities appear greater than or equal to 2.

8.4.2 factory inspection Fire sprinkler hose factory inspection items are all qualified, the sprinkler hose for qualified batch. There is a class A project failed, the batch of the sprinkler hose to be ineligible. If B class project failed, allowing double sampling inspection Inspection, there are still non-conformities that this batch of the sprinkler hose failed. 6.1

--- appearance quality; 6.2

--- rated working pressure; 6.3

--- Materials; 6.4

--- structure and size; 6.5

--- elongation deformation; 6.6

--- bending fatigue performance; 6.7

10.1 Packaging

10.1.1 Fire Sprinklers hose box should alone be fixed.

10.1.2 product packaging shall be accompanied by instruction manual and certificate.

10.1.3 outside the box should be marked orientations, stacking limit the number of pieces, protective storage conditions.

10.2 Transportation Fire sprinkler hose during transport should be rain, loading and unloading should prevent violent impact.

10.3 Storage Fire sprinkler hose should be stored in ventilated, dry warehouse, avoiding corrosive substances together with storage, storage temperature -10 °C ~ 40 °C.