CN204798676U - Store pressure formula gas type automatic fire extinguishing device in advance - Google Patents
Store pressure formula gas type automatic fire extinguishing device in advance Download PDFInfo
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- CN204798676U CN204798676U CN201520459735.0U CN201520459735U CN204798676U CN 204798676 U CN204798676 U CN 204798676U CN 201520459735 U CN201520459735 U CN 201520459735U CN 204798676 U CN204798676 U CN 204798676U
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- 238000003860 storage Methods 0.000 claims abstract description 87
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 30
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 104
- 239000000126 substance Substances 0.000 claims description 32
- 239000003999 initiator Substances 0.000 claims description 25
- 239000012528 membrane Substances 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000007799 cork Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000005030 aluminium foil Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000011889 copper foil Substances 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- NSGXIBWMJZWTPY-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropane Chemical compound FC(F)(F)CC(F)(F)F NSGXIBWMJZWTPY-UHFFFAOYSA-N 0.000 claims description 3
- 150000001350 alkyl halides Chemical class 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- RJCQBQGAPKAMLL-UHFFFAOYSA-N bromotrifluoromethane Chemical compound FC(F)(F)Br RJCQBQGAPKAMLL-UHFFFAOYSA-N 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 17
- 230000009471 action Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model provides a store pressure formula gas type automatic fire extinguishing device in advance, includes pressure vessel, dry powder or ultrafine dry powder or heptafluoro -propane fire extinguishing agent, produces the gas agent and causes the ware, wherein the fire extinguishing agent with produce the gas agent and store respectively in the pressure vessel, be equipped with the fire extinguishing agent release that can open mouthful on the jar body of pressure vessel when putting out a fire, cause one end that the ware is used for lighting and contact its characterized in that with product gas agent in the pressure vessel: it is gaseous still to be filled with the combustion -supporting nature of non - in the pressure vessel, the scope lower limit of the storage pressure in the pressure vessel should be greater than standard air pressure, and the range limit should be less than fire extinguishing agent release mouthful cracking pressure's third. The utility model discloses gaseous to filling in the storage tank into the combustion -supporting nature of non - in advance, make in the storage tank the external atmospheric pressure height of storage pressure ratio can, compare the non - on the one hand and store the stability that compression ignite gas type automatic fire extinguishing device has improved fire extinguishing agent in the storage tank, improved fire extinguishing efficiency when putting out a fire, on the other hand compares the storage pressure greatly reduced who stores die mould automatic fire extinguishing device, the device to put out a fire actuating mechanism simple, whole cost and running cost hang down.
Description
Technical field
The utility model belongs to fire control technology field, particularly relates to a kind of pre-stored-pressure type gas type automatic fire extinguisher.
Background technology
Dry powder self-extinguishing device, fire extinguishing can be started instantaneously at chance fire or fire signal, embody " response fast, early stage suppression, high-effect fire-extinguishing " this fire-fighting Advanced Idea, be widely used in the places such as storehouse, field before and after archive office, automobile, kitchen, office space, construction ground, storehouse, oil depot, safe, archive office, communication base station, gas station, transformer station.
Suspension type dry powder self-extinguishing device divides stored-pressure type and non-stored-pressure type (gas type) two kinds at present by type of drive, and extinguishing chemical is generally divided into common dry powder and ultra-fine dry powder.Stored-pressure type is primarily of dry powder storage tank, shower nozzle, the hot or electric initiator composition of temperature-sensing element.Non-stored-pressure type primarily of dry powder storage tank, gas generating agent, aluminium foil diaphragm close shower nozzle or spout, heat or electric initiator form.
For gas type dry powder self-extinguishing device, when fire being detected, gas generating agent by solid momentary activation, because gas generating agent carries oxidant, can be changed and generate CO by hot or electric initiator steadily, regularly
2, H
2o, N
2deng gas; powder extinguishing agent tank inner pressure increases; thus the aluminium foil diaphragm at close jet or shower nozzle place is broken through, powder extinguishing agent sprays rapidly and spreads in protection zone in storage tank, and under powder extinguishing agent continuous print chemistry and physical action, fire is put out instantaneously.But powder extinguishing agent is with no pressure to be for a long time stored in storage tank, such condition of storage is difficult to ensure that extinguishing chemical can not make moist, is oxidized and goes bad, and during fire extinguishing, the fire extinguishing effectiveness of extinguishing chemical reduces.Particularly close aluminium foil diaphragm impaired when, except the sealing property of storage tank cannot be ensured, also may cause and can not reach enough release pressures during fire extinguishing and make diaphragm beam fracture and spraying fire-extinguishing agent, affect extinguishing effect widely.
Summary of the invention
In order to solve the problem, order of the present utility model is to provide a kind of pre-stored-pressure type gas type automatic fire extinguisher.
In order to achieve the above object, the utility model provides a kind of pre-stored-pressure type gas type automatic fire extinguisher, comprise pressure vessel, dry powder or ultra-fine dry powder or heptafluoro-propane extinguishing chemical, gas generating agent and initiator, wherein extinguishing chemical and gas generating agent are stored in pressure vessel respectively, the tank body of pressure vessel is provided with the extinguishing chemical liberation port can opened when putting out a fire, and initiator contacts with the gas generating agent in pressure vessel for of lighting; It is characterized in that: be also filled with non-combustion-supporting property gas in described pressure vessel, the range lower limit of the storage pressure in described pressure vessel is greater than external atmosphere pressure, and range limit is less than 1/3rd of extinguishing chemical liberation port opening pressure.
Preferably, described pre-stored-pressure type gas type automatic fire extinguisher also comprises and is arranged on a charging valve on described pressure vessel wall.
Preferably, described non-combustion-supporting property gas is one of gas or two or more mist in nitrogen, argon gas, helium, heptafluoro-propane, HFC-236fa, fluoroform, alkyl halide 1201, Halon1301 and carbon dioxide.
Preferably, described initiator is electric initiator and/or thermal initiator.
Preferably, the closure elements of described extinguishing chemical liberation port comprises cork or pressure burst rupture of membranes sheet.
Preferably, described cork is plug or cork.
Preferably, described pressure burst rupture of membranes sheet is made up of the one in aluminium foil, aluminium sheet, Copper Foil, copper coin or high molecule plastic sheet material or any combination.
Preferably, described pre-stored-pressure type gas type automatic fire extinguisher also comprises and is arranged on a Pressure gauge or pressure switch on described pressure vessel wall.
Preferably, described Pressure gauge is electro connecting pressure gauge.
Preferably, described pre-stored-pressure type gas type automatic fire extinguisher also comprises on described Pressure gauge or pressure switch and described pressure vessel linkage section and arranges a service valve.
Preferably, described Pressure gauge for or pressure switch have twin-stage electric contact.
Preferably, described pre-stored-pressure type gas type automatic fire extinguisher also comprises the sealing ring be arranged between gas generating agent and tank body.
The pre-stored-pressure type gas type automatic fire extinguisher that the utility model provides has following beneficial effect:
The utility model only needs in storage tank, be filled with non-combustion-supporting property gas in advance, make the storage pressure in storage tank higher than external atmospheric pressure, compare the stability that non-reservoir pressure gas type automatic fire extinguisher improves extinguishing chemical in storage tank on the one hand, fire-fighting efficiency is improve during fire extinguishing, the storage pressure comparing reservoir pressure type automatic fire extinguisher on the other hand reduces greatly, the fire extinguishing actuating mechanism of device is simple, overall cost and operating cost low.
1, this automatic fire extinguisher is closed in storage tank at extinguishing chemical and is filled with a certain amount of non-combustion-supporting gas, makes to form malleation in storage tank, and its structure is simple, and cost and existing extinguishing device do not have difference substantially.
2, this automatic fire extinguisher is in coming into operation for a long time, and non-combustion-supporting property gas can stop the oxygen in outside air, moisture etc. to cause rotten impact to dry powder, ultra-fine dry powder or heptafluoro-propane extinguishing chemical, ensure that the stability of extinguishing chemical; Non-combustion-supporting property gas simultaneously during fire extinguishing in storage tank can accelerate extinguishing chemical and outwards spurt, and improves device fire-fighting efficiency.
3, this automatic fire extinguisher is in coming into operation for a long time, and its storage pressure, well below reservoir pressure automatic fire extinguisher, greatly reduces the operating cost of device.
Accompanying drawing explanation
One of pre-stored-pressure type gas type automatic fire extinguisher structure principle chart that Fig. 1 provides for the utility model embodiment 1.
The pre-stored-pressure type gas type automatic fire extinguisher structure principle chart two that Fig. 2 provides for the utility model embodiment 1.
The pre-stored-pressure type gas type automatic fire extinguisher structure principle chart three that Fig. 3 provides for the utility model embodiment 1.
The pre-stored-pressure type gas type automatic fire extinguisher structure principle chart that Fig. 4 provides for the utility model embodiment 2.
The pre-stored-pressure type gas type automatic fire extinguisher structure principle chart that Fig. 5 provides for the utility model embodiment 3.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the pre-stored-pressure type gas type automatic fire extinguisher that the utility model provides is described in detail below.
Storage pressure: fill extinguishing chemical by regulation in the hold-up vessel of extinguishing device and equalizing pressure after pressurising in 20 DEG C of environment.
Release pressure: diaphragm (pressure burst rupture of membranes sheet) breaks or cork is washed open, and when extinguishing chemical discharges in storage tank, in storage tank, the pressure of mist, is also opening pressure.
Water pressure test burst pressure: outlet seal completely after (non-pressure-proof part pressure-proof part is replaced) carry out the water pressure test until tank rupture time pressure.
Nominal operating pressure: finger pressure storage tank tank body (except non-pressure-proof part) is originally under fiducial temperature (20 DEG C), and the born gas that can normally work reaches restriction pressure during uniform state.Pressure vessel general nominal operating pressure≤1/3 water pressure test burst pressure.
The utility model provides a kind of pre-stored-pressure type gas type automatic fire extinguisher, comprise pressure vessel, dry powder or ultra-fine dry powder or heptafluoro-propane extinguishing chemical, gas generating agent and initiator, wherein extinguishing chemical and gas generating agent are stored in pressure vessel respectively, the tank body of pressure vessel is provided with the extinguishing chemical liberation port can opened when putting out a fire, and initiator contacts with the gas generating agent in pressure vessel for of lighting; It is characterized in that: be also filled with non-combustion-supporting property gas in described pressure vessel, the range lower limit of the storage pressure in described pressure vessel is greater than external atmosphere pressure, and range limit is less than extinguishing chemical liberation port opening pressure.
Introduce the concrete structure of several pre-stored-pressure type gas type automatic fire extinguisher below, but protection domain of the present utility model is not limited to following content.
Embodiment 1:
As shown in Figure 1, the pre-stored-pressure type gas type dry powder self-extinguishing device that the present embodiment provides, its storage tank 1 is provided with two ports, be respectively port one 9 and port 20, pressure burst rupture of membranes sheet 2 is pressed on port one 9 by hollow end cap 3, and pressure burst rupture of membranes sheet 2 is by aluminium foil, aluminium sheet, Copper Foil, copper coin, form as sheet materials such as plastics macromolecules; Also be provided with the drum tank 4 placing gas generating agent in the port 20 of storage tank 1, first with tack plug 7 closed circular barrel cage 4, add O RunddichtringO 12 between the peaceful screw plug 7 of drum tank 4 and seal, then with hollow end cap 11, drum tank 4 is fastened on the port 20 of storage tank 1; Drum tank 4 tank skin surrounding is provided with hole, and a large amount of gases produced during for being burnt by gas generating agent 5 enter in storage tank 1; Initiator 9 primarily of ignite head, detection of fires head and between connecting line form, its ignite head contacts with the gas generating agent 5 in drum tank 4 and arranges, and its continuous lines adopts rubber column or fluid sealant or bonding solidification glue through the sealing at hollow end cap 11 and/or tack plug 7 place.
Initiator 9 adopts one of thermal initiator or electric initiator, or both combinations.Adopt the sealing effectiveness of thermal initiator itself bad in addition, need to arrange sealing ring 6 between the peaceful screw plug 7 of gas generating agent 5, utilize the compactness of gas generating agent itself to ensure sealing effectiveness together with sealing ring.
The pre-stored-pressure type gas type dry powder extinguishing installation that the present embodiment provides assembles in the space of the non-combustion-supporting gas of certain pressure, make the non-combustion-supporting gas of reserved certain pressure in storage tank 1, its storage pressure is greater than external atmosphere pressure, and is less than the opening pressure of pressure burst rupture of membranes sheet; The lower limit of its preferred storage pressure scope is greater than standard atmospheric pressure, and the upper limit is less than 1/3rd of pressure burst rupture of membranes sheet opening pressure.Described pressure burst rupture of membranes sheet opening pressure not only has relation with the material of pressure burst rupture of membranes sheet, thickness, size, but also relevant with the nominal operating pressure size of storage tank 1 during the sheet explosion of pressure burst rupture of membranes; General storage pressure is in 0.001MPa ~ 0.667MPa scope; After assembling, the sealing property of this extinguishing device can be checked by the method for brushing foam solution or water logging; As Fig. 2, when Pressure gauge 8 can also be set on tack plug 7 or storage tank 1, monitor its sealing property.
As Fig. 3, also at tack plug 7 or storage tank 1, and between Pressure gauge 8, service valve 14 can be set.Checking that whether storage pressure in storage tank 1 is normal by opening service valve 14 under operating conditions, the lasting effectiveness of extinguishing device sealing can be detected, be conducive to avoiding Pressure gauge to lose efficacy the fault caused.
Pressure gauge 8 in the present embodiment is replaceable is set to electro connecting pressure gauge.So not only can hand inspection extinguishing device sealing property, and select single-stage or multistage pressure electro connecting pressure gauge as required, utilize its pressure electric contact automatically to carry out Real-Time Monitoring to its sealing property and/or extinguishing action state.
When adopting low pressure electro connecting pressure gauge 8, the operating pressure (low pressure) of electric contact is traditionally arranged to be the storage pressure being less than or equal to storage tank, like this, by the open and close of its action contact, automatically can detect extinguishing device sealing and extinguishing device fault-signal is provided.
When adopting high-pressure electro connecting pressure gauge 8, the operating pressure of electric contact is traditionally arranged to be the storage pressure being greater than storage tank, and the open and close like this by automatically detecting its action contact provides extinguishing device actuating signal.
When adopting height two-stage pressure electro connecting pressure gauge 8, the operating pressure of its low tension contact is less than or equal to the storage pressure of storage tank, and the operating pressure of high-tension electricity contact is greater than the storage pressure of storage tank, by automatically detecting the open and close of the high-low pressure two-stage pressure electric contact of electro connecting pressure gauge 8, extinguishing device sealing and extinguishing action state can be detected simultaneously.
Pressure gauge 8 in the present embodiment is replaceable is set to pressure switch.Select single-stage or multistage pressure electric contact pressure switch so as required, utilize its pressure electric contact automatically to carry out Real-Time Monitoring to its sealing property and/or extinguishing action state.Pressure switch adopt low pressure or/and high-pressure switch time adopt low pressure with above-mentioned electro connecting pressure gauge 8 or/and high-pressure electro connecting pressure gauge 8 time automatic Cleaning Principle identical.
Embodiment 2:
As shown in Figure 4, the pre-stored-pressure type gas type dry powder self-extinguishing device that the present embodiment provides and embodiment 1 are distinguished and are to arrange inflation inlet on tack plug 7 or storage tank 1 and charge valve 10 thereon, when whole extinguishing device has assembled, can by being filled with the non-combustion-supporting gas of certain pressure in charge valve 10 pairs of storage tanks 1, its storage pressure is greater than external atmosphere pressure, and is less than the opening pressure of closure elements; The lower limit of its preferred storage pressure is greater than standard atmospheric pressure, and the upper limit is less than 1/3rd of described cork or pressure burst rupture of membranes sheet opening pressure; General storage pressure is in 0.001MPa ~ 0.667MPa scope; Charge valve 10 or Pressure gauge 8, with service valve 14 can separately or stacked system be combined in an interface.Other is identical with embodiment 1.
Embodiment 3:
As Fig. 5, the pre-stored-pressure type gas type dry powder self-extinguishing device that the present embodiment provides and the difference of embodiment 1 are: gas generating agent 5 is filled in from storage tank 1 port 20 filling powder extinguishing agent, the port 20 of storage tank 1 directly fix by tack plug 7 and is closed modes such as () screw thread can be adopted to fix, seals between the peaceful screw plug 7 of storage tank 1 with O RunddichtringO 12.Initiator 9 contacts with gas generating agent 5 through tack plug 7, seals between initiator 9 with tack plug 7 with rubber column or fluid sealant or bonding solidification glue.
Above-described embodiment storage tank 1 all has two ports, also can a port be only set on storage tank 1, as long as so successively load in storage tank 1 from this port respectively by gas generating agent and powder extinguishing agent, the tank skin (as long as away from this port) that initiator 9 passes storage tank 1 enters in tank to contact with gas generating agent and arranges.
Electric initiator described in the utility model can be wireless remote-control electricity initiator.
Extinguishing chemical described in the utility model can be powder extinguishing agent or ultra-fine dry powder extinguishing agent, also can be that liquid gas extinguishing chemical is as heptafluoro-propane extinguishing chemical.
The utility model due to storage tank storage pressure low, described storage tank ejiction opening (extinguishing chemical liberation port) can adopt cork normally to close, as plug, cork etc.
In addition, described storage tank ejiction opening can also adopt pressure burst rupture of membranes sheet to close, and described pressure burst rupture of membranes sheet is made up of the one in aluminium foil, aluminium sheet, Copper Foil, copper coin or high molecule plastic sheet material or any combination.
Described non-combustion-supporting property gas is one of gas or two or more mist in nitrogen, argon gas, helium, heptafluoro-propane, HFC-236fa, fluoroform, alkyl halide 1201, Halon1301 and carbon dioxide.
The non-combustion-supporting property gas that the utility model is prefilled, Main Function is the sealing situation of monitoring storage tank, and storage pressure should not be too large, otherwise the thickness of storage tank and pressure burst rupture of membranes sheet, material and welding process requirement all will improve, and cause cost to increase, and economy declines.
The regulation of " gas cylinder safely technology Supervision Code " TSGR0006-2014 3.6.1 bar table 3.4 " the fire-fighting fire extinguishing gas cylinder nominal operating pressure of gas commonly used by splendid attire ", the storage tank nominal operating pressure filling " powder extinguishing agent+nitrogen " is 2.0MPa and 1.4MPa two specifications.In order to storage tank reaches better security, storage tank hydraulic pressure trial shots pressure requirements is higher than this nominal operating pressure, and the storage pressure filling gas in storage tank is lower than this nominal operating pressure.
" gas cylinder safely technology Supervision Code " TSGR0006-2014 the 3.4th bar of table 3.1 " the actual burst safety factor of gas cylinder " also specifies, Welded steel cylinder, comprise fire extinguisher Welded steel cylinder, actual burst safety factor, namely the water pressure test burst pressure of gas cylinder and the ratio of gas cylinder nominal operating pressure are 3.0.So during pressure vessel design, the bursting stress of material should calculate according to 3.0 of nominal operating pressure times.For non-stored-pressure type extinguishing device, because produce a large amount of gas after gas generating agent burning, also be the type of pressure vessel, so the opening pressure of pressure burst rupture of membranes sheet can not exceed the nominal operating pressure of this device, otherwise the safety of storage tank body can not be ensured during diaphragm explosion, what storage tank likely can meet accident breaks, and causes unexpected injury.
According to afore mentioned rules, the nominal operating pressure of getting storage tank is 2.0MPa to the maximum, so opening pressure≤2.0*1/3=0.667MPa of pressure burst rupture of membranes sheet, therefore in the utility model, the storage pressure of the non-combustion-supporting property gas that storage tank fills in advance can not more than 0.667MPa.
Further, because the pressure of gas can raise with temperature and increase, when temperature reach equipment allow most high ambient temperature time, the pressure of gas can reach maximum working pressure (MWP).Specify according to " gas cylinder safely technology Supervision Code " TSGR0006-2014 the 3.4th bar of table 3.1 " the actual burst safety factor of gas cylinder ", in order to the object of safety, the storage pressure of the non-combustion-supporting property gas that the utility model fills in advance preferably should meet and is no more than 1/3 of pressure burst rupture of membranes sheet opening pressure, otherwise pressure is too large, diaphragm is in close under the pressure destroyed for a long time, due to the compacted property deformation of metal, the sealing property of diaphragm can be affected, reduce the force value of explosion, affect the functional reliability of diaphragm, even misoperation occurs.
Certainly, because quoted technical regulation is not enforce, by improving the nominal operating pressure of pressure vessel and the opening pressure of diaphragm, can increase the storage pressure of the non-combustion-supporting property gas filled in advance, should be all belong to the invention thinking be equal to this patent.
Stored-pressure type extinguishing device receives enough gas-powered extinguishing chemicals to deposit, for the ratio of the volume of the residual volume with storage tank that fill tank nitrogen after having filled extinguishing chemical in storage tank, generally be not less than 30%, but not after having filled extinguishing chemical in stored-pressure type extinguishing device storage tank, reserved free volume before reaching burst pressure for gas generating agent combustion gas pressure and the ratio of the volume of storage tank, be generally not more than 20%.With the size of storage tank residual volume rate, the extinguishing device of difference reservoir pressure and non-reservoir pressure, only reaches this ratio, storage tank just can be made to reach good economy.
Claims (12)
1. a pre-stored-pressure type gas type automatic fire extinguisher, comprise pressure vessel, dry powder or ultra-fine dry powder or heptafluoro-propane extinguishing chemical, gas generating agent and initiator, wherein extinguishing chemical and gas generating agent are stored in pressure vessel respectively, the tank body of pressure vessel is provided with the extinguishing chemical liberation port can opened when putting out a fire, and initiator contacts with the gas generating agent in pressure vessel for of lighting; It is characterized in that: be also filled with non-combustion-supporting property gas in described pressure vessel, the range lower limit of the storage pressure in described pressure vessel is greater than external atmosphere pressure, and range limit is less than extinguishing chemical liberation port opening pressure.
2. pre-stored-pressure type gas type automatic fire extinguisher according to claim 1, it is characterized in that: the range lower limit of the storage pressure in described pressure vessel is greater than external atmosphere pressure, range limit is less than 1/3rd of extinguishing chemical liberation port opening pressure.
3. pre-stored-pressure type gas type automatic fire extinguisher according to claim 1, is characterized in that: described pre-stored-pressure type gas type automatic fire extinguisher also comprises and is arranged on a charging valve on described pressure vessel wall.
4. pre-stored-pressure type gas type automatic fire extinguisher according to claim 1, is characterized in that: described non-combustion-supporting property gas is one of gas or two or more mist in nitrogen, argon gas, helium, heptafluoro-propane, HFC-236fa, fluoroform, alkyl halide 1201, Halon1301 and carbon dioxide.
5. pre-stored-pressure type gas type automatic fire extinguisher according to claim 1, is characterized in that: described initiator is electric initiator and/or thermal initiator.
6. pre-stored-pressure type gas type automatic fire extinguisher according to claim 1, is characterized in that: the closure elements of described extinguishing chemical liberation port comprises cork or pressure burst rupture of membranes sheet.
7. pre-stored-pressure type gas type automatic fire extinguisher according to claim 6, is characterized in that: described cork is plug or cork.
8. pre-stored-pressure type gas type automatic fire extinguisher according to claim 6, is characterized in that: described pressure burst rupture of membranes sheet is made up of the one in aluminium foil, aluminium sheet, Copper Foil, copper coin or high molecule plastic sheet material or any combination.
9. according to the arbitrary described pre-stored-pressure type gas type automatic fire extinguisher of claim 1 to 5, it is characterized in that: described pre-stored-pressure type gas type automatic fire extinguisher also comprises and is arranged on a Pressure gauge or pressure switch on described pressure vessel wall.
10. pre-stored-pressure type gas type automatic fire extinguisher according to claim 9, is characterized in that: described Pressure gauge is electro connecting pressure gauge.
11. pre-stored-pressure type gas type automatic fire extinguishers according to claim 9, is characterized in that: described pre-stored-pressure type gas type automatic fire extinguisher also comprises on described Pressure gauge or pressure switch and described pressure vessel linkage section and arranges a service valve.
12. pre-stored-pressure type gas type automatic fire extinguishers according to claim 9, is characterized in that: described Pressure gauge or pressure switch have twin-stage electric contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520459735.0U CN204798676U (en) | 2015-06-24 | 2015-06-24 | Store pressure formula gas type automatic fire extinguishing device in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520459735.0U CN204798676U (en) | 2015-06-24 | 2015-06-24 | Store pressure formula gas type automatic fire extinguishing device in advance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903141A (en) * | 2016-04-20 | 2016-08-31 | 国安达股份有限公司 | Fire extinguishing agent being stored in the status of mixed liquid |
| CN105920772A (en) * | 2016-04-20 | 2016-09-07 | 国安达股份有限公司 | Mixed fire-extinguishing agent |
| CN107869509A (en) * | 2017-07-16 | 2018-04-03 | 湖南鸿腾新能源技术有限公司 | Valve nut, electric drive valve valve head and its electric drive valve |
| CN108815763A (en) * | 2018-07-20 | 2018-11-16 | 江苏德远消防设备有限公司 | A kind of small spray orifice extinguishing device |
| CN110841231A (en) * | 2019-11-05 | 2020-02-28 | 天津航空机电有限公司 | Quick injection structure for fire extinguisher |
-
2015
- 2015-06-24 CN CN201520459735.0U patent/CN204798676U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903141A (en) * | 2016-04-20 | 2016-08-31 | 国安达股份有限公司 | Fire extinguishing agent being stored in the status of mixed liquid |
| CN105920772A (en) * | 2016-04-20 | 2016-09-07 | 国安达股份有限公司 | Mixed fire-extinguishing agent |
| CN107869509A (en) * | 2017-07-16 | 2018-04-03 | 湖南鸿腾新能源技术有限公司 | Valve nut, electric drive valve valve head and its electric drive valve |
| CN107869509B (en) * | 2017-07-16 | 2019-12-03 | 湖南鸿腾新能源技术有限公司 | Valve nut, electric drive valve valve head and its electric drive valve |
| CN108815763A (en) * | 2018-07-20 | 2018-11-16 | 江苏德远消防设备有限公司 | A kind of small spray orifice extinguishing device |
| CN110841231A (en) * | 2019-11-05 | 2020-02-28 | 天津航空机电有限公司 | Quick injection structure for fire extinguisher |
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Granted publication date: 20151125 |