GB 5135.14-2011Automatic sprinkler systems - Part 14: Preaction devices (English PDF)

5.1.1 Device component

5.1.1.1 Pre-action device is a pre-action alarm valve, control panel, pressure support system, air supply system and piping accessories and other components composition.

5.1.1.2 means the components installed in the correct position, reasonable overall layout, ease of operation, inspection and maintenance.

5.1.2 Appearance Pre-action means the constituent parts should be no obvious processing defect or mechanical damage, the outer surface of the parts should be corrosion, rust treatment, the coating Layer coating should be complete and uniform.

5.1.3 Flag

5.1.3.1 Pre-action alarm valve should be obvious position clear, permanent labeling the following.

a) Product name and model specifications;

b) production unit name or trademark;

c) rated working pressure;

d) the production date and product number;

e) the implementation of the standard code;

f) pre-action alarm direction of flow manifold installation.

5.1.3.2 control panel should be obvious position clear, permanent labeling the following.

a) Product name and model specifications;

b) the operating voltage and current;

c) standby power working time;

d) Operating ambient temperature;

e) production unit name or trademark.

5.1.4 means working status Pre-action means working position each operating member, the control panel control and monitoring functions, should be in normal working condition, pre-action reported Police manifolds, air pressure and air supply means to maintain the device should be in a normal state should wait. Water pressure system side inflation pressure should be in normal working condition.

5.1.5 Start operating requirements

5.1.5.1 Start mode Pre-action device shall have the following ways to start.

a) Auto Start. electric start, start wet, dry start, lock seal fusible start like, the above-described manner can start the series and parallel use;

b) through the fire means the manual button on the control panel to start the manual mode;

c) by pre-action alarm valve control chamber manual control valve opening mechanical emergency start-up mode;

d) Any automatic start mode must be provided with a mechanical emergency start mode.

5.1.5.2 start running Tested in accordance with the provisions of 6.20, pre-action device shall comply with the following requirements.

a) means a different way to start the action should be accurate, reliable, trouble-free;

b) mechanical emergency start should have effective measures to prevent malfunction; Operating parameters

c) device, such as a delay time, inflation pressure range should be consistent with published parameters specified on the production unit Instructions range.

5.2 Pre-action alarm valve Basic parameters 5.2.1

5.2.1.1 Rated Operating Pressure Pre-action alarm valve rated working pressure of not less than 1.2MPa, should be consistent with 1.2MPa, 1.6MPa and other pressure levels. Pre-action alarm valve and lower working pressure rating of the device when fitted to use, allows the import and export joint press valve to withstand low pressure Stage process, but the valve should indicate the use of lower pressure rating.

5.2.1.2 nominal diameter Importers and pre-action alarm valve nominal diameter of 50mm, 65mm, 80mm, 100mm, 125mm, 150mm, 200mm, 250mm, 300mm. Pre-action alarm valve seat at a diameter smaller than the nominal diameter.

5.2.2 Materials

5.2.2.1 Pre-action alarm valve body and bonnet shall be not less than the corrosion resistance of cast iron materials. The seat should be corrosion-resistant Performance is not less than the bronze material. The use of corrosion-resistant bronze material below the seat surface should be treated with preservatives, and shall When tested in accordance with the provisions of 6.3, pre-action alarm valve after the test by the method specified in

6.8 a leak and function tests, should be Subject to

5.2.6 and 5.2.8.

5.2.2.2 Pre-action alarm valve requires rotating or sliding parts shall be bronze, brass, austenitic stainless steel and other corrosion-resistant material. If the corrosion-resistant material is less than the above requirements should be added to relative movement of the bushing member said corrosion-resistant material.

5.2.3 Structure and dimensions

5.2.3.1 Pre-action alarm valve body and bonnet joint size should be consistent with GB/T 3098.1 ~ 3098.3, GB/T 9112, GB/T 17241.6, GB 5135.11 or GB/T 3287 provisions of.

5.2.3.2 Pre-action alarm valve should be provided on the valve body drain port, drain port nominal diameter of not less than 20mm.

5.2.3.3 Water-side valve body assembly, shall be provided without opening the valve test facility alarm device.

5.2.3.4 Pre-action alarm valve should be set on the bottom water was added and the water level to check the bottom of the structure.

5.2.4 Rigid non-metallic materials Rigid non-metallic parts

5.2.4.1 Pre-action alarm valve employed, according to the method after the aging test specified in 6.2, 6.3, should not have Crack impede the normal operation of the apparatus, distortion, creep, or other damage.

5.2.4.2 aging test by a rigid non-metallic parts of the pre-action alarm valve assembly carried out by the method of infiltration provisions

6.8 When the leak and function tests, should comply with

5.2.6 and 5.2.8.

5.2.5 Strength The valve assembly in the open position of the pre-action alarm valve, according to the method specified in

6.4 hydrostatic strength test, the test pressure of 4 times the amount Given operating pressure (but not less than 4.8MPa), to maintain 5min, the valve should be no macroscopic deformation, leakage and other damage to the phenomenon.

5.2.6 leakage, deformation and air tightness

5.2.6.1 Pre-action alarm valve in the valve assembly to open the case, according to the method specified in

6.5.1 carry out valve leak test should be able to withstand By 2 times the rated working pressure of the hydrostatic pressure, to maintain 5min, the valve should be no leakage, no permanent deformation or damage.

5.2.6.2 Pre-action alarm valve in the valve assembly to close the case, according to the method specified in

6.5.2 carry out a valve leak test, the water supply facilities Plus 2 times the rated working pressure of the hydrostatic pressure, to maintain 2h, should be no leakage, no permanent deformation or damage.

5.2.6.3 Pre-action alarm valve in the case of the valve assembly is closed, according to the method specified in

6.6 air tightness test, plus system side 0.1MPa air pressure, to maintain 5min, bubble leakage can not be more than 3 per minute.

5.2.7 hydraulic friction When the pre-action alarm valve according to the provisions of

5.2.8 Pre-action alarm valve function

5.2.8.1 When the pre-action alarm valve should be in a wait state, the external force should not start valve disorders. 5.2.8.2

6.8 according to the method prescribed functional tests, pre-action alarm valve should be able to 0.14MPa to the rated working pressure range Water pressure operation.

5.2.8.3 Pre-action alarm valve is in the state should wait, should prevent water leakage from the supply side to the system side, so that leakage of water or with automatic discharge Out of the facility. 5.2.8.4

6.8 according to the method prescribed functional tests, pre-action alarm valve should be through manual and automatic method of operation.

5.2.8.5 Pre-action alarm valve activation means after the operation, pre-action alarm valve should be opened in the 15s of the valve (Preaction newspaper Police manifolds nominal diameter of more than 200mm, the valve can be opened in the 60s).

5.2.8.6 When the pre-action alarm valve alarm port according to the provisions of

6.8 functional test, when the water pressure is 0.14MPa, the system side To 60L/min flow rate of drainage, alarm mouth pressure of at least 0.05MPa to start the alarm device.

5.2.8.7 Pre-action alarm valve should be fortified resetting means, when the valve starts normally, at different pressures, close the solenoid valve electrically controlled chamber Source (or other control) and water control valve, pre-action alarm valve should be reset. Pre-action alarm valve should be reset manually re Bit completed.

5.2.8.8 Pre-action alarm valve control solenoid valve should be set to open the front end of the filter.

5.2.8.9 For pre-action alarm valve sealing seat bottom water, should be set up and added to the water bottom examination of bottom water level facilities.

5.2.8.10 use pressurized gas as boot media pre-action alarm valve, with its air pressure inside the water pipe, alarm should be based on pre-action Technical performance manifolds determination, and shall meet the requirements of GB 50084.

5.2.9 fire resistance Using a melting point below 800 °C metal material or non-metallic materials valve body and cover pre-action alarm valve, according to the provisions of

6.21 Fire resistance test carried out, filled with water valve should be able to withstand 800 °C fire resistance test 15min. After the test, the valve should be free to open, the valve body should be able to Withstand 2 times the rated working pressure of the hydrostatic pressure, keeping 2min, it should be no permanent deformation or damage.

5.3 Pressure retaining means

5.3.1 Pressure retaining means consists of a pressure alarm means, check valves, valves, control valves, limiting parts and other components constituting the filter member.

5.3.2 Preaction inflatable device system side pressure range should be set to 0.03MPa ~ 0.05MPa, namely pressure to maintain the pressure control device Range; the use of pressurized gas to start pre-action alarm valve media, the scope of its inflation pressure side of the system, determined by the manufacturer announced, and should be In line with GB 50084 requirements.

5.3.3 should be set up in parallel with the bypass line pressure, the bypass control valve should be set in order to use the device in the early fast inflatable, So that the pipe network to achieve rapid inflation pressure range.

5.3.4 Pressure monitor the facility, the lower limit alarm pressure value should be adjusted, and under pressure to give an alarm signal can be set. Pipe network inspection Pressure measurement alarm limit pressure value not less than 0.02MPa, the upper limit of the pressure within the pipe network detection alarm pressure value and the value declared by enterprises to provide Deviation should not exceed 10%.

5.3.5 After the fire when the system enters the state, should be provided to prevent gas continues into the fire pipe network facilities, and should have a corresponding pressure protection Alarm, monitoring switching means measures.

5.4 Control Panel

5.4.1 Appearance The control panel can not be significantly skew warping phenomenon. The control panel surface should be smooth, coat color should be uniform, there should be no glare Reflective.

5.4.2 wires, lights and button color A control panel used wire colors, lights and buttons should comply with the provisions of GA30.1-2002 in 5.6.2.1.

5.4.3 Control Panel Disk control panel should be equipped with the power supply voltage (the power supply and backup power) display, pre-action alarm valve opening and closing status display, electromagnetic Valve (or other startup mode) button to manually open, high, low pressure alarm display, inflatable system status display. Buttons, switches and disk control instrument panel should be easy to operate and has a feature flag.

5.4.4 Power Requirements The control panel of the main power supply voltage [220 × (1 ± 15%)] under V, 50Hz condition should be able to work reliably. Equipment control panel should power or dual power connector. If the device control panel with the power supply capacity should meet the normal state of continuous monitoring Working 24h, should ensure system reliability during startup. Lord, standby power should have work instructions, should be automatic, manual switching function, main and backup power switching time should be less than 1s.

5.4.5 control and alarm functions

5.4.5.1 control panel should have automatic and manual start pre-action system function, automatic mode, manual mode should be clearly marked and can turn to each other change. Whether the panel is in automatic or manual mode, manually start must always be valid.

5.4.5.2 control panel can be set delayed start function. If the delay function, the delay time 0s ~ 30s continuously adjustable, such as the use of sub-file-conditioned Each stall interval should be less than 10s.

5.4.5.3 After the pre-action status means boot into the fire, the air compressor should stop using other air supply should be provided to prevent gases continue Continued into the fire pipe network facilities.

5.4.5.4 control panel should be able to receive fire alarm equipment fire signal came. After entering the state of the fire, the fire control panel should be able to issue a sound, Light alarm signal, and it shall be provided with a fire start signal is transmitted to the fire control center terminals.

5.4.5.5 should have its own control panel (including the detection, control circuit) fault alarm and high and low pressure alarm.

5.4.5.6 control panel shall be provided to control external devices terminals.

5.4.5.7 panel should be equipped with protective grounding terminal.

5.4.6 Environmental Requirements weather Resistant climate requirements should be consistent with the requirements of

5.4.7 Mechanical resistance to environmental requirements Resistance to mechanical environmental requirements should be consistent with the requirements in GA61-2002 6.5.

5.5 Solenoid valve

5.5.1 Flag On the surface of the solenoid valve should be at least marked with the model specifications, voltage, current, ambient temperature, name or trademark. On the body should be The flow direction clearly marked.

5.5.2 Reliability Solenoid valve according to the method specified in

6.16 reliability test should be accurate action, flexible, and must not show any structural damage or failure (n Allowed except when the damage is often working parts). After the test shall comply with the provisions of 5.5.5.

5.5.3 Function Assembled solenoid valve, inlet pressure from 0.14MPa, 0.2MPa to the rated working pressure differential is 0.1MPa, the use of electromagnetic element And opened solenoid valves, quick action should be accurate.

5.5.4 Strength Solenoid valve according to the method prescribed was

6.4 Body strength test should be able to withstand four times the rated working pressure of the hydrostatic pressure, to maintain 5min, test Experiments should solenoid valve in the open position, the valve should be no leakage test, deformation and damage.

5.5.5 Seal Solenoid valve according to the method specified in

6.5.1 sealing performance test, the solenoid valve inlet subjected to 2 times the rated working pressure of the hydrostatic pressure, keeping 5min, test the solenoid valve is in the closed position, the solenoid valve at the outlet should be no leakage.

5.5.6 insulation Under normal atmospheric conditions, the insulation resistance of the solenoid valve between the terminals and the housing should be greater than 20MOmega.

5.5.7 Power supply Solenoid valve should be able to work at 85% to 115% of rated voltage.

5.5.8 Damp heat test Solenoid valve according to the method prescribed was

6.11 Damp heat test, after the test operation should be accurate, flexible, and must not show any structural failure or damage.

5.6 control means

5.6.1 using a pressure switch is used as the control components shall meet the requirements of GB 5135.10.

5.6.2 the use of other devices as a control section shall comply with the relevant requirements of the production units to use manual.

5.7 to maintain the pressure device - regulator

5.7.1 shell strength

6.4 according to the method prescribed hydrostatic strength test, the test pressure of

1.5 times the maximum working pressure during the test, the housing may not be There is leakage.

5.7.2 Sealing Performance According to the method specified in

6.5.1 be sealed test, the test pressure for the maximum working pressure during the test valve should be no leakage.

5.7.3 Surge Performance

6.17 according to the method specified in the regulator performance test valve should be open and flexible, reliable, no jamming and abnormal vibration phenomenon.

5.8 to maintain the pressure device - the control valve

5.8.1 Materials Control valves should be corrosion-resistant materials, such as copper alloy or stainless steel.

5.8.2 strength requirements Control valve according to the method specified in

6.4 strength test, the test pressure of

1.5 times the maximum working pressure, to maintain 5min, any portion Member should not have structural damage, permanent deformation and rupture.

5.8.3 sealing requirements Control valve according to the provisions of

6.5.1 seal test, the test pressure for the maximum working pressure, to maintain 5min, should any member of the Current leakage.

5.9 to maintain the pressure device - the one-way valve

5.9.1 Appearance The check valve should be set permanently marked in obvious position, at least mark the specifications, working pressure, medium flow direction, production enterprises Business name or trademark.

5.9.2 Materials One-way valve and its internal mechanical parts should be made of stainless steel, copper alloy, the strength can also be used, corrosion resistance is not lower than the above...