CN201216830Y - Passive thermo-responsive initiator for extinguishment - Google Patents
Passive thermo-responsive initiator for extinguishment Download PDFInfo
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- CN201216830Y CN201216830Y CNU2008200294486U CN200820029448U CN201216830Y CN 201216830 Y CN201216830 Y CN 201216830Y CN U2008200294486 U CNU2008200294486 U CN U2008200294486U CN 200820029448 U CN200820029448 U CN 200820029448U CN 201216830 Y CN201216830 Y CN 201216830Y
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- hole enlargement
- sensitive device
- heat
- block body
- bar magnet
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Abstract
The utility model relates to a passive and heat sensitive extinguishing starter used for a supersonic powder extinguisher, which comprises a base and a cap body fixed on the base; a magnetic power source composed of a magnetic bar and an armature is arranged in the base and the cap body; and a heat sensitive ejection mechanism arranged on the cap body supports a pin through a heat sensitive device, and locks the magnetic bar through the pin and causes the magnetic bar to be located in the position where an expansion spring shrinks. When ambient temperature reaches a set temperature value, the heat sensitive device moves and the magnetic bar ejects and passes through the armature, so that induced current is produced and a fire lighting head is started to conduct ignition. The extinguishing starter realizes temperature-sensing and passive start, provides convenient conditions for the supersonic powder extinguisher to be applied to passive areas in the wilderness, and meanwhile has the advantages of reasonable structure, quick reaction, reliable movement, high sensitivity, good safety, high environmental adaptability, invulnerability to electromagnetic interference, etc.
Description
Technical field
The utility model relates to a kind of thermal-sensitive fire extinguishing starter, and specifically, it is a kind of passive thermal-sensitive fire extinguishing starter.
Background technology
In prior art, Shaanxi is built peace engineering equipment Co., Ltd and had been released a kind of super-sonic dry-chemical fire extinguisher in recent years, it is different with common vapour-pressure type dry powder extinguisher, it does not need other power source (as nitrogen cylinder group, force (forcing) pump etc.), but the gas that relies on self-contained solid fuel ignition to produce, this gas forms supersonic airstream by the supersonic speed gas generator, takes then to wrap up in dry powder and directly spray in the mode of two-phase flow.It is fast that it has toggle speed, the characteristics that fire-fighting efficiency is high.If this super-sonic dry-chemical fire extinguisher is used to have the place (locating as urban architecture, warehouse etc.) of power supply, general all is to survey according to the condition of a fire by the fire controller to send igniter head that starting current is given this fire extinguisher, is ignited solid fuel rapidly and is put out a fire by igniter head.If this fire extinguisher is used for the field, particularly forest fire protection, this active detection and detonation way just are difficult to be suitable for, though also can realize with battery, battery is difficult to keep long time, and open-air the replacing is part trouble and uneconomic thing.Therefore, have in the prior art and adopt the temperature-sensitive Starting mode, provide a kind of " the automatic warning fire extinguisher that memory drives " as Chinese patent ZL200420030397.0, it adopts a kind of memorial alloy as heat-sensitive device, this element manufacturing becomes a drum of opening the limit, and in cylinder, add support assembly of a secondary spring formation, this support assembly is arranged between valve port push rod and the bottleneck sealing gasket.When environment temperature reached set temperature, the cylinder of heat-sensitive device magnified, and gets out of the way push rod, and push rod is lost the compressing of sealing gasket, and then a bottle internal gas pressure carries dry powder and washes the push rod on bottleneck sealing gasket and the valve port open and spray.Though the idea of this thermo-responsive startup is fine, the fire-fighting powder device that it aims at the air-pot class designs, and can't be applied to the above-mentioned super-sonic dry-chemical fire extinguisher that starts with igniter head.Have, this patent structure is closely imperfect yet again, as: the gasket seal of bottleneck is compressed by support assembly by push rod, but push rod is not fixed structure, and therefore, its security can't guarantee.Both made push rod make wedge shape into, and pressed down and clog valve port, its structure also is reliable inadequately.Have, its startup sensitivity and reliability also are worth discussion again, because the upper and lower end face of tubular supporting component and push rod and the comprehensive engagement of bottleneck sealing gasket, during action, frictional resistance is bigger, thus the sensitivity of influence action.Moreover, during the heat-sensitive device action, its cylinder will serve as the coaxial hole enlargement of axle with the push rod axis, just can get out of the way push rod and lose compressing the bottleneck gasket seal, if this cylinder is installed coaxially with push rod inadequately, just might cause when action still reserve part the support of push rod is reduced action sensitivity and reliability.In addition, in the cylinder effect of assistant spring indeterminate, as if do not play what effect.
Summary of the invention
The purpose of this utility model is at the problem in the prior art, a kind of passive thermal-sensitive fire extinguishing starter that igniter head provides starting current that aims at is provided, thereby making the super-sonic dry-chemical fire extinguisher be applied to the field is achieved, simultaneously, also make it have highly sensitive, good environmental adaptability, safe and reliable characteristics.
Be real above-mentioned purpose, the technical solution of the utility model is as follows:
It comprises a base and is buckled in the block body of a band the brim of a hat on this base, in this base and block body, be provided with a magnetoelectricity source, this magnetoelectricity source is made of a bar magnet and an armature that is enclosed within on this bar magnet, in described block body, be provided with the up stroke chamber of bar magnet, in described base, be provided with the down stroke chamber of bar magnet, and on this, the docking site in down stroke chamber is provided with the armature chamber of a hole enlargement, described bar magnet is positioned at, in the down stroke chamber, described armature is arranged in armature chamber, and obtaining axial restraint by the closure of armature chamber, the lead-in wire of described armature is drawn by the fairlead on base or the block body; On described block body, be provided with a thermo-responsive ejection mechanism, this mechanism is by the heat-sensitive device that is enclosed within on the external wall of block, be located at the spring between bar magnet and its up stroke top of chamber, radially inserting a pair of axial bar shaped cotter way of being opened on the pin on bar magnet top and the external wall of blocking a shot constitutes, described heat-sensitive device is semicircle lasso or the U-shaped lasso of being made by memorial alloy, the two ends of described pin are passed a pair of axial bar shaped cotter way and are stretched out the block body, and frame is on the openend of heat-sensitive device, by this heat-sensitive device pin is formed the spacing of its downslide, and pin pins bar magnet and is located at the position that top pressure spring shrinks.
The further improved technical scheme of the utility model is as follows:
Be provided with a little hole enlargement step that is used to install heat-sensitive device in the bottom of the external wall of described block, described heat-sensitive device is installed on this little hole enlargement step, the hole enlargement width of this little hole enlargement step is less than the thickness of heat-sensitive device, make the outer ring of heat-sensitive device unsettled, described little hole enlargement step is wheel chair access cambered surface or vertical plane corresponding to the open end of heat-sensitive device, makes the openend of heat-sensitive device unsettled.
Be provided with a hole enlargement ring on the top of described block body, between its bottom or the block body the brim of a hat and little hole enlargement step, be provided with a hole enlargement pedestal identical with the hole enlargement ring diameter, the diameter of described hole enlargement ring and hole enlargement pedestal, tightens to cooperate at this hole enlargement ring and hole enlargement pedestal and is with an oversheath less than the diameter of the block body the brim of a hat greater than the width of temperature sensitization apparatus openend.
Be provided with a hole enlargement step that is used to install heat-sensitive device in the bottom of the external perisporium of described block, and this step is wheel chair access cambered surface corresponding to the open end of heat-sensitive device or hangs down planely, make the openend of heat-sensitive device unsettled.
Be provided with an inner groovy on the roof in block body up stroke chamber, be provided with a undergauge boss in the upper end of bar magnet, the upper end of spring is installed in the inner groovy, and its lower end is enclosed within on the undergauge boss.
Compared with the prior art the utility model has following characteristics:
One, the utility model adopts thermo-responsive memorial alloy device and magnetoelectricity source to combine, and makes the starting current of its thermo-responsive action back output point duration and degree of heating, thereby realizes the passive startup of temperature-sensitive.Appearance of the present utility model provides the condition that makes things convenient for for the super-sonic dry-chemical fire extinguisher is conveniently used in open-air no source area, and oil field, warehouse and forest fire protection are had special important meaning.
Two, the reasonable in design of the thermo-responsive bar magnet ejection mechanism of the utility model, reaction fast, reliable in action, highly sensitive, security good.
Three, because structures such as magnetoelectricity of the present utility model source and spring are installed in the cavity of sealing, so can prevent dust, protection against the tide, environmental suitability is better, long service life (at least 6 years) is applicable to the place that wild environment is relatively poor.Moreover magnetoelectricity is derived from body and has anti-electromagnetic interference performance, and therefore, the utility model also has the advantage of not being afraid of electromagnetic interference.
Description of drawings
Fig. 1, overall structure cross-sectional schematic of the present utility model.
Fig. 2, the utility model remove the contour structures schematic diagram of oversheath.
The cutaway view of A-A face among Fig. 3, Fig. 2.
The vertical view of Fig. 4, semicircle cover cast heat-sensitive device.
The vertical view of Fig. 5, U-shaped lasso heat-sensitive device.
The schematic diagram of Fig. 6, semicircle cover cast heat-sensitive device open configuration.
The specific embodiment
Referring to Fig. 1～3, this starter comprises a base 1 and is buckled in the block body 2 of a band the brim of a hat on this base, in this base 1 and block body 2, a magnetoelectricity source is housed, this magnetoelectricity source is made of a bar magnet 3 and an armature 4 that is enclosed within on the bar magnet, in block body 2, be provided with the up stroke chamber 23 of bar magnet 3, in base 1, be provided with the down stroke chamber 11 of bar magnet 3, on this, the docking site in down stroke chamber is provided with the armature chamber 9 of a hole enlargement, bar magnet 3 is mounted thereto, down stroke chamber 23, in 11, described armature 4 is installed in the armature chamber 9, when block body 2 is fixed on the base 1, armature chamber 9 closures, then armature 4 promptly obtains axial restraint, and the lead-in wire 7 of armature is drawn by the fairlead on base 1 or the block body 2.On block body 2, be provided with the thermo-responsive ejection mechanism of a bar magnet 3, this mechanism is by the heat-sensitive device 5 that is enclosed within on block body 2 periphery walls, be located at the spring 6 between bar magnet 3 and its up stroke chamber roof, radially inserting a pair of axial bar shaped cotter way of being opened on the pin 8 of bar magnet and body 2 outer walls of blocking a shot 25 constitutes, wherein heat-sensitive device 5 is semicircle lasso or U-shaped lassos of being made by memory alloy material, as Fig. 4, shown in 5, two ends 81 projecting shafts of described pin 8 are to bar shaped cotter way 25 and on the openend 51 of frame at heat-sensitive device 5, form the spacing of its downslide by 5 pairs of pins 8 of this heat-sensitive device, and this pin pins bar magnet 3 and is located at the position that top pressure spring shrinks.When this starter was static, spring 6 compressed by bar magnet 3 and 8 pairs of heat-sensitive devices 5 of pin, makes structure more stable, so misoperation can not take place, security is good.
The course of work of this starter is: when environment temperature reaches heat-sensitive device 5 and sets temperature, the openend of heat-sensitive device 5 immediately (within 7 seconds) open (state as shown in Figure 6), then the two ends 81 of pin are built on stilts, at this moment, bar magnet 3 ejects downwards under the effect of spring 6 with pin 8, the two ends 81 of pin also glide along the axial bar-shaped trough 25 on the block body perisporium, bar magnet is played certain guide effect, bar magnet 3 At time of ejects pass armature 4, make in the armature 4 and produce induced current, this induced current 7 is given igniter head as the starting current of igniter head by going between, then igniter head super-sonic dry-chemical fire extinguisher that ignites.Because pin 8 is a contact with contacting of heat-sensitive device 5,, guaranteed the sensitivity of moving so when heat-sensitive device 5 opens, be easy to leave pin.The height of heat-sensitive device 5 can be adjusted the relative position between bar magnet 3 and the armature 4, plays the effect of regulating magnetoelectricity source energy output size.This starter can be used for starting a plurality of super-sonic dry-chemical fire extinguishers.
Again referring to Fig. 2,3, for the action that makes heat-sensitive device 5 quick more, be provided with on the little hole enlargement step 21 in block body 2 outer wall bottoms, the hole enlargement width of this little hole enlargement step is less than the thickness of heat-sensitive device 5, temperature-sensitive Sensitive Apparatus 5 is installed on the little hole enlargement step 21, the inner ring of heat-sensitive device 5 is supported by little hole enlargement step 21, and the outer ring is unsettled, like this, the frictional resistance in the time of can reducing heat-sensitive device 5 and open.Frictional resistance when opening in order further to reduce heat-sensitive device 5, described little hole enlargement step 21 is wheel chair access cambered surface or vertical plane corresponding to 51 places, two terminations of heat-sensitive device 5, makes the lower end of these two terminations 51 unsettled less than supporting.This routine specific practice is that block body 2 is directly made a string plane barrel 24 corresponding to the cambered surface step barrel at 51 positions, two terminations of heat-sensitive device.Like this, the upper surface of heat-sensitive device 5 only carries out contacting with two terminations of pin 8, the openend and the outer ring of its lower surface are unsettled, when opening, only need overcome between its upper surface and the pin and lower surface inner ring and hole enlargement small stair between frictional resistance, can discharge pin, the action sensitivity of this starter is further improved.
Again referring to Fig. 1, for the installation that makes spring 6 coaxial with bar magnet 3, prevent its active force skew, chamber inner roof wall at block body 2 is provided with an inner groovy 22, and the upper end of bar magnet 3 is provided with a undergauge boss 31, the upper end of spring 6 is installed in the inner groovy 22, and its lower end is enclosed within on the undergauge boss 31 of bar magnet upper end.
Referring to Fig. 1,2, in order to seal the axial bar-shaped trough 25 on the block body 2, make block body 2 become the cavity of a sealing, better dustproof, moisture proof, be provided with a hole enlargement ring 26 on the outer wall top of described block body 2, between the described block body the brim of a hat 28 and little hole enlargement step 21, be provided with a hole enlargement pedestal 27 identical with the hole enlargement ring diameter, and tighten to cooperate at this hole enlargement ring and hole enlargement pedestal and be with an oversheath 10, open action in order to make oversheath not influence temperature sensitization apparatus, the diameter of described hole enlargement ring and hole enlargement pedestal greater than the width of temperature sensitization apparatus openend less than the diameter of the block body the brim of a hat 28.
Claims (4)
1, a kind of passive thermal-sensitive fire extinguishing starter is characterized in that:
1.1, it comprises a base (1) and is buckled in the block body (2) of a band the brim of a hat on this base, in this base and block body, be provided with a magnetoelectricity source, this magnetoelectricity source is made of a bar magnet (3) and an armature (4) that is enclosed within on this bar magnet, in described block body (2), be provided with the up stroke chamber (23) of bar magnet (3), in described base (1), be provided with the down stroke chamber (11) of bar magnet (3), and on this, the docking site in down stroke chamber is provided with the armature chamber (9) of a hole enlargement, described bar magnet (3) is positioned at, down stroke chamber (23,11) in, described armature (4) is arranged in armature chamber (9), and it obtains axial restraint by the closure of armature chamber (9), and the lead-in wire of described armature (7) is drawn by the fairlead on base (1) or the block body (2);
1.2, on described block body (2), be provided with the thermo-responsive ejection mechanism of a bar magnet (3), this mechanism is by the heat-sensitive device (5) that is enclosed within on block body (2) outer wall, be located at the spring (6) between bar magnet (3) and its up stroke chamber (23) roof, radially inserting a pair of axial bar shaped cotter way of being opened on the pin (8) on bar magnet (3) top and body (2) outer wall of blocking a shot (25) constitutes, described heat-sensitive device (5) is semicircle lasso or the U-shaped lasso of being made by memorial alloy, the two ends of described pin (81) projecting shaft is to bar shaped cotter way (25) and on the openend (51) of frame at heat-sensitive device, by this heat-sensitive device (5) pin (8) is formed the spacing of its downslide, and pin pins bar magnet (3) and is located at the position that top pressure spring shrinks.
2, passive thermal-sensitive fire extinguishing starter according to claim 1, it is characterized in that: be provided with a little hole enlargement step (21) that is used to install heat-sensitive device (5) in the bottom of described block body (2) outer wall, described heat-sensitive device (5) is installed on this little hole enlargement step, the hole enlargement width of this little hole enlargement step is less than the thickness of heat-sensitive device (5), make the outer ring of heat-sensitive device (5) unsettled, described little hole enlargement step (21) is located to be wheel chair access cambered surface or vertical plane corresponding to the openend (51) of heat-sensitive device (5), makes the openend (51) of heat-sensitive device unsettled.
3, thermo-responsive passive fire extinguishing starter according to claim 1 and 2, it is characterized in that: be provided with an inner groovy (22) on the roof in block body (2) up stroke chamber, be provided with a undergauge boss (31) in the upper end of bar magnet (3), the upper end of spring (6) is installed in the inner groovy (22), and its lower end is enclosed within on the described undergauge boss (31).
4, thermo-responsive passive fire extinguishing starter according to claim 1 and 2, it is characterized in that: be provided with a hole enlargement ring (26) on the top of described block body (2), between its bottom or the block body the brim of a hat and little hole enlargement step, be provided with a hole enlargement pedestal (27) identical with the hole enlargement ring diameter, the diameter of described hole enlargement ring and hole enlargement pedestal, tightens to cooperate at this hole enlargement ring and hole enlargement pedestal and is with an oversheath (10) less than the diameter of the block body the brim of a hat (28) greater than the width of temperature sensitization apparatus openend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294486U CN201216830Y (en) | 2008-06-27 | 2008-06-27 | Passive thermo-responsive initiator for extinguishment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294486U CN201216830Y (en) | 2008-06-27 | 2008-06-27 | Passive thermo-responsive initiator for extinguishment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201216830Y true CN201216830Y (en) | 2009-04-08 |
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ID=40539666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200294486U Expired - Lifetime CN201216830Y (en) | 2008-06-27 | 2008-06-27 | Passive thermo-responsive initiator for extinguishment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201216830Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101297993B (en) * | 2008-06-27 | 2011-07-20 | 西安机电信息技术研究所 | Passive thermo-responsive initiator for extinguishment |
| CN101618258B (en) * | 2009-08-11 | 2011-10-19 | 西安机电信息技术研究所 | Passive thermal-sensitive fire extinguishing starter |
-
2008
- 2008-06-27 CN CNU2008200294486U patent/CN201216830Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101297993B (en) * | 2008-06-27 | 2011-07-20 | 西安机电信息技术研究所 | Passive thermo-responsive initiator for extinguishment |
| CN101618258B (en) * | 2009-08-11 | 2011-10-19 | 西安机电信息技术研究所 | Passive thermal-sensitive fire extinguishing starter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090408 Effective date of abandoning: 20080627 |