GB 14102.1-2024Fire shutter assembly - Part 1: General technical specification (English PDF)

3.1 Fire shutter assembly

A shutter assembly with certain fire resistance, which is composed of roller, guide rail, seat plate, lintel, box body, shutter curtain, motor for fire shutter assembly (referred to as motor for shutter assembly), and control unit for fire shutter assembly (referred to as control unit) and other components. [Source: GB/T 5907.5-2015, 2.14.4.1, modified]

3.2 Fire steel shutter assembly

Fire shutter assembly of which the shutter curtain is mainly made of steel materials. [Source: GB/T 5907.5-2015, 2.14.4.2, modified]

3.3 Fire inorganic shutter assembly

3.10 Motor for fire shutter assembly

A powered device used, in conjunction with the control unit for fire shutter assembly, to drive the shutter curtain of fire shutter assembly to complete opening, positioning, and closing functions.

Note: The motor for fire shutter assembly is generally composed of an electric motor, a thermal release mechanism with temperature sensing element, a limitation assembly, a gearbox assembly, a brake and manual operation assembly, and an electrical assembly. [Source: GB/T 5907.5-2015, 2.14.4.5, modified]

3.11 Thermal release mechanism with temperature sensing element

A mechanical device that is connected to the clutch release lever in the brake and manual operation assembly of the motor for fire shutter assembly and can be linked to release the brake of the motor through the action of its own temperature sensing element.

Note: The thermal release mechanism with temperature sensing element is a key component of the motor for fire shutter assembly. In the event of an emergency when a fire occurs in a building and the power is cut off, when the ambient temperature reaches the specified nominal operating temperature (70 °C), the temperature sensing element will be heated and actuated, and the clutch release rod will be linked to separate the brake component of the motor for fire shutter assembly from the transmission mechanism, releasing the brake. The shutter curtain of fire shutter assembly will drop under its own weight and close the opening of the fireproof (partition) wall to prevent the spread of fire. For the performance requirements of the thermal release mechanism with temperature sensing element, see GB 14102.2.

4.1 Structural diagram

The structural diagram of the fire shutter assembly is shown in Figure 1.

4.3 Specifications

The specifications of fire shutter assemblies are expressed in four digits consisting of the thousands and hundreds digits (tens digits rounded off) of the design-given installation opening width and height structural dimensions [in millimeters (mm)] arranged in sequence. For example, if the installation opening structure width of the fire shutter assembly is 4 580 mm and the height is 5 030 mm, its specification is expressed as 4650.

4.4 Model

The method for compiling the models of fire shutter assemblies is shown in Figure 2.

Example 1: Model "GFJ·3530-C2b-I-abc" indicates a fire steel shutter assembly, of installation opening width 3 450 mm ~ 3 540 mm; height 2 950 mm ~ 3 040 mm; un-insulated fire shutter assembly; fire resistance integrity not less than 2.00 h; exposed to fire on the side facing away from the motor and the box body; single-curtain; manufacturer-customized as abc.

Example 2: Model "WFJ·3560-A3-II/360-ab" indicates a fire inorganic shutter assembly, of installation opening width 3 450 mm ~ 3 540 mm; height 5 950 mm ~ 6 040 mm; insulated fire shutter assembly; fire resistance insulation not less than 3.00 h; fire resistance integrity not less than 3.00 h; exposed to fire on both sides; double-curtain; center distance between the guide rails on the same side of the double-shutter curtain 360 mm; manufacturer-customized as ab.

5.1 Appearance

5.1.1 The surface of the metal parts of the fire shutter assembly shall be smooth and free of rust. There shall be no cracks, pits, burrs, distortions, welding defects, obvious bumps, hammer marks, scratches and other defects. The surface coating and plating of the fire shutter assembly material shall be uniform and there shall be no missing coating, peeling, rust and other phenomena. The shutter curtain of the fire inorganic shutter assembly shall be flat and there shall be no cracks, missing corners, patching and other defects.

5.1.2 Fire shutter assembly products shall be equipped with permanent markings and nameplates and shall comply with the requirements of 8.1.

5.2 Main material properties

5.2.1 The nominal thickness of steel plates used in the main components of fire shutter assemblies shall comply with the provisions of Table 4. The allowable deviation of the thickness of steel plates and steel strips shall comply with the relevant provisions of GB/T 708 or GB/T 709. The allowable deviation of the wall thickness of steel pipes shall comply with the relevant provisions of GB/T 8162 or GB/T 13793.

5.2.2 The tensile breaking strength (50 mm) of the inorganic shutter curtain shall not be less than 1 000 N.

5.3 Performance of main components

5.3.1 Shutter slat

5.3.1.1 The shutter slat shall be straight and both ends shall be securely fitted with baffles (side buckles) or other mechanisms to prevent adjacent shutter slats from moving.

5.3.1.2 The shutter slat shall be able to be connected in series (connected) reliably. After being connected in series (connected), adjacent shutter slats shall rotate flexibly and shall not fall off after swinging 90°, as shown in Figure 3.

5.3.1.3 The deviation of the mass (weight) per unit length of the shutter slat shall not exceed ±6% of the manufacturer's published (designed) value.

5.3.5.2 Transmission chains

The tensile strength of the transmission chain shall not be less than 6 times the rated load.

5.3.5.3 Shutter curtain bearing components

The fixed ends of the shutter curtain bearing components (such as steel wire ropes) shall be securely fastened, and their tensile strength shall not be less than 6 times the actual load.

5.3.6 Curtain guide device

5.3.6.1 A shutter curtain guide device shall be provided between the tops of the guide rails of the fire shutter assembly along the width of the shutter curtain so that the shutter curtain does not scrape against the ends of the guide rails when entering the guide rails.

The rolling parts on the guide device that come into contact with the shutter curtain shall be securely fixed and operate smoothly.

5.3.6.2 When the rolling component of the guide device that contacts the shutter curtain is a cam, the cam spacing shall not be greater than 2 000 mm.

5.3.7 Motor

The performance of the motor for fire shutter assembly shall comply with the provisions of GB 14102.2.

5.3.8 Control unit

The performance of the control unit for fire shutter assembly shall comply with the provisions of GB 14102.3.

5.4 Assembly quality

5.4.1 The connection and installation of all parts and fasteners of the fire shutter assembly shall be firm and reliable.

5.4.2 Appropriate amount of lubricant shall be added to the contact surfaces between the transmission parts of the fire shutter assembly as required.

5.4.3 Buried guide rails shall be installed and embedded in the building wall or column structure; exposed guide rails shall be protected from fire by non-combustible materials.

5.4.4 The installation method and position of the temperature-sensing element of the thermal release mechanism with temperature sensing element in the motor shall meet the requirements of rapid startup in the event of a fire, and its horizontal installation position shall be located in the middle of the width direction of the fire shutter assembly; fire shutter assemblies exposed to fire on both sides shall be equipped with two sets of […]

5.7 Smoke-proof performance

5.7.2 Smoke leakage from shutter curtain

When the pressure difference on both sides of the shutter curtain of the fire shutter assembly is 20 Pa, the smoke leakage under the standard state (20 °C, 101 325 Pa) shall not be greater than 12 m³/(m²·h).

5.8 Fire resistance

The fire resistance performance of fire shutter assemblies shall comply with the requirements of Table 2.

6.1 Appearance

Under normal natural light conditions, carry out the inspection by combining visual observation and hand touch.

6.2 Main material properties

6.2.1 Use a micrometer or vernier caliper to measure the thickness of the steel material specified in Table 4. Measure three random locations on the steel material of each component; take the average value; calculate the material thickness deviation by comparing it with the designed value on the drawing.

6.2.2 The breaking strength (50 mm) of inorganic shutter curtain materials shall be measured in accordance with the provisions of GB/T 3923.1.

6.3 Performance of main components

6.3.1 Shutter slat

6.3.1.1 Under normal natural light conditions, use a combination of hand inspection and visual inspection to check the straightness of the shutter slat and the installation of the end baffles (side buckles) or anti-movement mechanisms.

6.3.1.2 Take any two shutter slats connected in series; fix one of them; rotate the other shutter slat to 90° (see Figure 3); observe and record the rotation of the shutter slats.

6.3.1.3 The mass deviation per unit length of the shutter slat shall be determined according to the following steps.

a) Randomly select three shutter slats from the fire shutter assembly as test pieces;

b) Use an electronic scale to weigh the mass Gi of each shutter slat;

c) Use a steel tape measure to measure the length Li of each shutter slat;

d) Calculate the mass per unit length rhoLi of each shutter slat according to Formula (1) and round the result to an integer; Where. Gi - shutter slat mass, in grams (g); Li - shutter slat length, in meters (m);

rhoLi - mass per unit length of the shutter slat, in grams per meter (g/m); i - shutter slat test piece number, 1, 2, 3, respectively.

e) Calculate the mass deviation per unit length of the shutter slat deltarhoL according to Formula (2) and round the result to an integer. Where. rhoL1, rhoL2, rhoL3 - masses per unit length of the three shutter slats calculated according to Formula (1), in grams per meter (g/m);

rhoL0 - the manufacturer's declared value of the shutter slat's mass per unit length, in grams per meter (g/m);

deltarhoL - mass deviation of shutter slat per unit length, in grams per meter (g/m).

6.3.1.4 The temperature gradation of the core material of the steel composite shutter slat shall be determined in accordance with the test method specified in GB/T 3003-2017. Randomly take a steel composite shutter slat; cut it into 3 sections; dismantle it and visually inspect the filling condition of the sandwich (layer) material inside the shutter slat.

6.3.2 Inorganic shutter curtain

6.3.2.1 The deviation of the mass per unit area of the inorganic shutter curtain shall be determined according to the following steps.

a) Cut a sample of 2 000 mm × 400 mm from the inorganic shutter curtain and prepare 6 test pieces according to the cutting method for felt samples specified in GB/T 9914.3;

b) According to the method for determining the mass per unit area of felt samples specified in GB/T 9914.3, test the mass per unit area rhoA of the inorganic shutter curtain;

c) Calculate the mass deviation per unit area deltarhoA of the shutter curtain according to Formula (3). Where.

rhoA - mass per unit area of the shutter curtain measured according to 6.3.2.1b), in grams per square meter (g/m2);

rhoA0 - the manufacturer's declared value of the mass per unit area of the shutter curtain, in grams per square meter (g/m2);

deltarhoA - mass deviation of shutter curtain per unit area, in grams per square meter (g/m2).

6.3.2.2 The combustion performance of inorganic shutter curtains shall be tested in accordance with the provisions of GB 8624-2012, and the smoke toxicity hazard classification shall be tested in accordance with the provisions of GB/T 20285-2006.

6.3.2.3 The high and low temperature test of inorganic shutter curtain shall be carried out according to the following steps.

a) Cut a test sample with a length of not less than 1 500 mm and a width of not less than 300 mm along the vertical running direction of the shutter curtain;

b) Fold the shutter curtain test sample four times in the forward and reverse directions along its length; stack them in a low-temperature test chamber.

Adjust the temperature in the test chamber to 20 °C ± 2 °C; maintain it for 30 min ± 5 min; then reduce the temperature to -20 °C ± 2 °C at a rate of no more than 5 °C/min; after maintaining it at this temperature for 48 h, remove the test sample from the low-temperature chamber and observe whether it is brittle and whether it still maintains a certain degree of elasticity.

c) After placing the shutter curtain samples tested in 6.3.2.3b) under normal laboratory conditions for 24 hours, fold the shutter curtain test samples in the forward and reverse directions a total of four times along the length direction and stack them in a high-temperature test chamber. Adjust the temperature in the test chamber to 20 °C ± 2 °C; maintain it for 30 min ± 5 min; then increase the temperature to 55 °C ± 2 °C at a rate of no more than 5 °C/min. After maintaining it at this temperature for 48 hours, remove the test samples from the high-temperature chamber and observe whether they are sticking. […]

6.3.3 Guide rail