CN113096346A - Wide switching value temperature-sensing fire detector - Google Patents
Wide switching value temperature-sensing fire detector Download PDFInfo
- Publication number
- CN113096346A CN113096346A CN202010459293.5A CN202010459293A CN113096346A CN 113096346 A CN113096346 A CN 113096346A CN 202010459293 A CN202010459293 A CN 202010459293A CN 113096346 A CN113096346 A CN 113096346A
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- Prior art keywords
- wide
- films
- detector
- bimetal
- fire
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- UTICYDQJEHVLJZ-UHFFFAOYSA-N copper manganese nickel Chemical compound [Mn].[Ni].[Cu] UTICYDQJEHVLJZ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The wide-width switching value temperature-sensing fire detector is formed by connecting a conversion box, a connecting wire, a wide-width detector and a resistor R, and is characterized in that the structure of the wide-width detector is as follows: two bimetal films are arranged in parallel, a meltable insulating layer is arranged between the two bimetal films, the surface of the bimetal film with large thermal expansion coefficient is contacted with the meltable insulating layer, and finally, an outer sheath layer is coated on the outermost surface. When any point of the wide-width detector is heated, the meltable insulating layer is softened or melted, the bimetallic film is heated to expand and deform, the softened or melted meltable insulating layer is extruded, short circuit between the bimetallic films is caused, and a fire alarm signal is judged and output through a conversion box connected with the bimetallic film. The wide-range switching value temperature-sensing fire detector can cover the fire change in a detection area by 100 percent, and the reliability of fire detection is obviously improved.
Description
Technical Field
The invention relates to a fire alarm device, in particular to a wide-range switch temperature-sensing fire detector which can cover a detection monitoring area by 100 percent.
Technical Field
In the prior art implementation of a line type fire detector, as shown in fig. 1: the width of a general large-scale cable bridge is 0.5 m-1.5 m, taking a cable bridge 11 with a length L1 of 3m and a width W of 0.5m as an example, wherein a line type fire detector 13 is generally laid in a sine wave manner, and the distance between two wave crests L2 is 1.5 m. The overhead area of the bridge frame is 1.5m2The conventional line type fire detector 13 generally has a diameter of 4mm to 6mm, and the line type fire detector 13 shown in FIG. 1 has a plan view area of 0.0186m, taking a diameter of 5mm as an example2Only covers 0.0124% of the bridge frame area, and has great valueUncovered area 12. In order to increase the protection area, two line-type fire detectors 13 are paved in a sine wave mode in the cable bridge, the protection area only covers 0.024% of the overlooking area of the cable bridge, and a large uncovered area exists.
Taking the prior line type fire detector as an example, fig. 1: when a point of a certain cable 14 in the cable bridge is overheated or a fire breaks out, the existing line-type fire detection technology can be used for detecting the fire only when the point of the fire breaks out is just under the line-type temperature-sensitive detector, and if the point of the cable in the bridge where the fire breaks out is in an uncovered area, the fire can be detected only when the fire spreads to the line-type temperature-sensitive detector, so that the fire is not detected in the first time. The prior art has great potential safety hazards, so that a wide fire detector capable of covering a detection monitoring area by 100% is needed.
Disclosure of Invention
The invention aims to provide a wide switching value temperature-sensing fire detector, which is implemented as shown in figures 2 and 3; the device is formed by connecting a conversion box, a connecting wire, a wide detector and a resistor R, and is characterized in that the structure of the wide detector is as follows: two bimetal films are arranged in parallel, a meltable insulating layer is arranged between the two bimetal films, the surface of the bimetal film with large thermal expansion coefficient is contacted with the meltable insulating layer, and finally, an outer sheath layer is coated on the outermost surface. The connecting wire and the bimetallic film in the wide detector are sealed by conductive adhesive, thus forming the wide switching value temperature-sensing fire detector.
A wide-range switching value temperature-sensing fire detector is characterized in that the width of the detector is larger than or equal to the width of a cable bridge, and the detection area is 100% covered. The working principle is that when any point of the wide-width detector is heated, the meltable insulating layer is softened or melted, the bimetallic film is heated to expand and deform, the softened or melted meltable insulating layer is extruded, short circuit between the bimetallic films is caused, and a fire alarm signal is judged and output through the conversion box connected with the bimetallic film.
Compared with the prior art, the invention has the following advantages:
the invention adopts wide-range switching value temperature-sensing fire detection, overcomes the defect that the line-type temperature-sensing fire detection in the prior art can only detect the fire change in a very small range around a delay body, and can cover the fire change in a detection area by 100 percent, thereby obviously improving the reliability of fire detection.
Drawings
FIG. 1 is a schematic diagram of a prior art linear temperature-sensitive fire detector applied to a bridge;
FIG. 2 is a schematic diagram of a wide switching value temperature-sensitive fire detector according to the present invention;
FIG. 3 is a cross-sectional view of a wide switching value temperature-sensitive fire detector according to the present invention.
Detailed Description
The invention aims to provide a wide switching value temperature-sensing fire detector, which is implemented as shown in figures 2 and 3: the wide detector 7 is formed by connecting a conversion box 5, a connecting wire 6, a wide detector 7 and a resistor R, wherein the wide detector 7 is structurally characterized in that two bimetallic films 1 and 2 are arranged in parallel, a meltable insulating layer 3 is arranged between the two bimetallic films 1 and 2 which are arranged in parallel, the surfaces of the two bimetallic films 1 and 2 with large thermal expansion coefficients are in contact with the meltable insulating layer 3, and finally, an outer sheath layer 4 is coated. When any point of the wide detector 7 is heated, the meltable insulation layer 3 is softened or melted, the bimetallic films 1 and 2 are heated to expand and deform, the softened or melted meltable insulation layer 3 is extruded, short circuit between the bimetallic films 1 and 2 is caused, and a fire alarm signal is judged and output through the conversion box 5 connected with the bimetallic films.
One of the bimetallic films 1 and 2 can be a common metal film. The wide detector has a width of 0.2-1.5 m and a length of 20-500 m.
Description of the Material characteristics of the invention:
1. meltable insulation material: the thickness is 0.05 mm-0.5 mm, the width is 0.5 m-1.6 m, the length is 20 m-5000 m, the Vicat softening point is 40-200 ℃, and the volume resistivity is 1010～1018Omega cm of all plastic, rubber materials.
2. A bimetal film: the thickness is 0.05 mm-0.5 mm, the width is 0.4 m-1.5 m, the length is 20 m-5000 m, and the material can be selected from manganese-nickel-copper alloy and nickel-iron alloy.
3. Ordinary metal thin film: the thickness is 0.05 mm-0.5 mm, the width is 0.4 m-1.5 m, the length is 20 m-5000 m, and the material can be copper, aluminum or iron.
4. Outer sheath layer material: the thickness of PVC, PE, PET and PP can be selected from 0.1 mm-2.0 mm.
5. Connecting wires: common 0.5mm2～1.5mm2An electric wire.
Claims (2)
1. The utility model provides a wide width switching value temperature sensing fire detector, is connected by converter box (5), connecting wire (6), wide width detector (7), resistance (R) and constitutes, its characterized in that wide width detector's (7) structure: the method is characterized in that two bimetal films (1) and (2) are arranged in parallel, a meltable insulating layer (3) is arranged between the two bimetal films (1) and (2) which are arranged in parallel, the surfaces of the two bimetal films (1) and (2) with large thermal expansion coefficients are in contact with the meltable insulating layer (3), and the outermost surfaces of the two bimetal films are coated with an outer sheath layer (4).
2. A wide-switching value thermal fire detector according to claim 1, wherein one of the two bimetal films (1), (2) is a common metal film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010459293.5A CN113096346A (en) | 2020-05-19 | 2020-05-19 | Wide switching value temperature-sensing fire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010459293.5A CN113096346A (en) | 2020-05-19 | 2020-05-19 | Wide switching value temperature-sensing fire detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113096346A true CN113096346A (en) | 2021-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010459293.5A Pending CN113096346A (en) | 2020-05-19 | 2020-05-19 | Wide switching value temperature-sensing fire detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113096346A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004030559A (en) * | 2002-01-11 | 2004-01-29 | Mitsuo Hayashi | Fire detection matting and fire alarm using the matting |
| CN2717865Y (en) * | 2004-07-21 | 2005-08-17 | 中国国际海运集装箱(集团)股份有限公司 | Safety intelligent large container |
| CN101101693A (en) * | 2006-07-07 | 2008-01-09 | 张卫社 | Analog quantity linear temperature-sensing fire hazard exploration cable |
| CN101138669A (en) * | 2006-09-08 | 2008-03-12 | 张卫社 | Irrecoverable type line-type heat detector of broken circuit warning |
| JP2015014918A (en) * | 2013-07-05 | 2015-01-22 | 能美防災株式会社 | Fire detection device and fire detection method |
| CN204229579U (en) * | 2014-10-11 | 2015-03-25 | 青岛中阳消防科技有限公司 | The passive temperature-sensitive sensing element of a kind of on-off value linear |
| US20170011607A1 (en) * | 2015-07-10 | 2017-01-12 | Raytheon Company | Thermal Switch |
| CN212541528U (en) * | 2020-05-19 | 2021-02-12 | 沈阳普泰安科技有限公司 | Wide switching value temperature-sensing fire detector |
-
2020
- 2020-05-19 CN CN202010459293.5A patent/CN113096346A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004030559A (en) * | 2002-01-11 | 2004-01-29 | Mitsuo Hayashi | Fire detection matting and fire alarm using the matting |
| CN2717865Y (en) * | 2004-07-21 | 2005-08-17 | 中国国际海运集装箱(集团)股份有限公司 | Safety intelligent large container |
| CN101101693A (en) * | 2006-07-07 | 2008-01-09 | 张卫社 | Analog quantity linear temperature-sensing fire hazard exploration cable |
| CN101138669A (en) * | 2006-09-08 | 2008-03-12 | 张卫社 | Irrecoverable type line-type heat detector of broken circuit warning |
| JP2015014918A (en) * | 2013-07-05 | 2015-01-22 | 能美防災株式会社 | Fire detection device and fire detection method |
| CN204229579U (en) * | 2014-10-11 | 2015-03-25 | 青岛中阳消防科技有限公司 | The passive temperature-sensitive sensing element of a kind of on-off value linear |
| US20170011607A1 (en) * | 2015-07-10 | 2017-01-12 | Raytheon Company | Thermal Switch |
| CN212541528U (en) * | 2020-05-19 | 2021-02-12 | 沈阳普泰安科技有限公司 | Wide switching value temperature-sensing fire detector |
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