CN212847046U - Wide-width netted fire detector - Google Patents
Wide-width netted fire detector Download PDFInfo
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- CN212847046U CN212847046U CN202020917086.5U CN202020917086U CN212847046U CN 212847046 U CN212847046 U CN 212847046U CN 202020917086 U CN202020917086 U CN 202020917086U CN 212847046 U CN212847046 U CN 212847046U
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Abstract
A wide-width mesh fire detector comprising: a conversion box, a wide-width mesh detector, a concentrator and a resistor R. The wide-width mesh detector is characterized by comprising the following structures: a plurality of elastic metal conductors coated with a meltable insulating material layer on the outer surface are used as longitudinal lines, one elastic metal conductor coated with a meltable insulating material layer is used as a transverse line, the transverse line and the longitudinal line are woven into a net-shaped structure in an alternate inserting mode, two ends of the longitudinal line of the net-shaped structure are respectively connected together in a line concentration mode, and finally two ends of the transverse line and two ends of the longitudinal line after line concentration are respectively connected with a conversion box and an open circuit detection resistor, so that the wide-width net-shaped fire detector with multiple points in a plane is formed. When fire occurs, the cross point of the transverse line and the longitudinal line is heated and the insulating material layer is softened or melted, the cross point of the transverse line and the longitudinal line is short-circuited under the prestress action of the elastic metal conductor, and the switching box judges and outputs a fire alarm signal.
Description
Technical Field
The utility model relates to a fire alarm device, a netted fire detector of broad width, this netted fire detector of broad width can 100% cover and survey the monitoring area.
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 W1 of 0.5m as an example, wherein a linear 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 1.5m2In the conventional line type fire detector 13, most of the conventional line type fire detector 13 has a diameter of 4mm to 6mm, and in fig. 1, the line type fire detector 13 has a diameter of 5mm as an example, and a plan view area of 0.018m2Only 0.012% of the area of the bridge is covered, there is a very large uncovered area 12. In order to increase the protection area, two line-type fire detectors 13 are laid in a sine wave manner in the cable bridge, but the protection area only covers 0.024% of the overlooking area of the cable bridge, and a large uncovered area also exists.
In fig. 1, a conventional line type fire detector 13 is taken as an example: 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 detect the fire only when the point of the fire is just under the line-type temperature-sensitive detector 13, and if the point of the cable in the bridge where the fire breaks out is in the uncovered area 12, the fire can be detected only when the line-type temperature-sensitive detector 13 is spread, so that the fire is not detected in the first time.
In view of the above, there is a great safety risk in the prior art, and therefore a wide fire detector capable of covering a detection monitoring area by 100% is required.
Disclosure of Invention
An object of the utility model is to provide a netted fire detector of broad width, include: a conversion box, a wide-width mesh detector, a concentrator and a resistor R. The wide-width mesh detector is characterized by comprising the following structures: a plurality of elastic metal conductors coated with a meltable insulating material layer on the outer surface are used as longitudinal lines, one elastic metal conductor coated with a meltable insulating material layer is used as a transverse line, the transverse line and the longitudinal line are woven into a net-shaped structure in an alternate inserting mode, two ends of the longitudinal line of the net-shaped structure are respectively connected together in a line concentration mode, and finally two ends of the transverse line and two ends of the longitudinal line after line concentration are respectively connected with a conversion box and an open circuit detection resistor, so that the wide-width net-shaped fire detector with multiple points in a plane is formed. A wide-width netted fire detector features that when a fire occurs, the cross point of transverse and longitudinal lines is heated to soften or melt the insulating material layer, the cross point of transverse and longitudinal lines is short-circuited under the action of the prestress of elastic metallic conductor, and a switching box judges the alarm signal of fire.
Compared with the prior art, the utility model has the advantages that:
the utility model discloses a netted fire detection of broad width has overcome prior art line type temperature sensing fire detection and can only survey the fire change that takes place in very small range around the extension body, and the netted fire detector of broad width of the invention can 100% cover the fire change in the detection area, is showing the accuracy and the reliability that have improved fire detection.
Drawings
FIG. 1 is a schematic view of a prior art line type fire detector applied in a cable tray;
fig. 2 is a schematic view of a wide-width mesh fire detector.
Detailed Description
The utility model relates to a netted fire detector of broad width, the implementation is shown as figure 2: the device is formed by connecting a conversion box 5, a wide-width mesh detector 4, a concentrator 3 and a resistor R. It is characterized in that the wide-width mesh detector 4 has the structure: the method comprises the following steps of taking a plurality of metal elastomer conductors 1 covering a meltable insulation material layer 2 as longitudinal lines, taking another metal elastomer 1 covering the meltable insulation material layer 2 as transverse lines, weaving the transverse lines and the longitudinal lines in an alternate inserting mode to form a net-shaped plane with the width W of 0.2-1.5 m and the length L of 20-500 m, enabling each contact point of the transverse lines and the longitudinal lines to have elastic prestress, connecting two ends of the longitudinal lines in the net-shaped structure to hubs 3 at two ends respectively, connecting the two ends of the transverse lines and the two ends of the longitudinal lines after line concentration in a welding or pressing mode, and finally connecting a conversion box 5 and a resistor R to form the wide-width net-shaped fire detector with multiple points and a plane. When a fire occurs, the cross point of the transverse line and the longitudinal line is heated, the melting insulating material layer 2 is softened or melted, the cross point of the transverse line and the longitudinal line is short-circuited under the prestress action of the elastic metal conductor, and the conversion box 5 judges and outputs a fire alarm signal.
The melting point temperature range of the meltable insulating material layer 2 is 50-200 ℃, and wide-width mesh detectors with different alarm temperatures are manufactured; the distance between the woven meshes is made to be between 5mm and 20mm so as to meet the requirements of different fire detection environments.
Claims (1)
1. A wide-width netted fire detector is formed by connecting a conversion box (5), a wide-width netted detector (4), a concentrator (3) and a resistor (R), and is technically characterized in that the wide-width netted detector (4): the plurality of metal elastomer conductors (1) coated on the meltable insulation material layer (2) are longitudinal lines, the other metal elastomer conductor (1) coated on the meltable insulation material layer (2) is a transverse line, and the transverse line and the longitudinal line are alternately woven in an inserting mode to form the net-shaped fire detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020917086.5U CN212847046U (en) | 2020-05-19 | 2020-05-19 | Wide-width netted fire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020917086.5U CN212847046U (en) | 2020-05-19 | 2020-05-19 | Wide-width netted fire detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212847046U true CN212847046U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020917086.5U Active CN212847046U (en) | 2020-05-19 | 2020-05-19 | Wide-width netted fire detector |
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| CN (1) | CN212847046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096347A (en) * | 2020-05-19 | 2021-07-09 | 沈阳普泰安科技有限公司 | Wide-width netted fire detector |
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2020
- 2020-05-19 CN CN202020917086.5U patent/CN212847046U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096347A (en) * | 2020-05-19 | 2021-07-09 | 沈阳普泰安科技有限公司 | Wide-width netted fire detector |
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