CN201117046Y - Composite type simulation quantity line-type temperature-sensing fire hazard detector - Google Patents
Composite type simulation quantity line-type temperature-sensing fire hazard detector Download PDFInfo
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- CN201117046Y CN201117046Y CNU2007200158877U CN200720015887U CN201117046Y CN 201117046 Y CN201117046 Y CN 201117046Y CN U2007200158877 U CNU2007200158877 U CN U2007200158877U CN 200720015887 U CN200720015887 U CN 200720015887U CN 201117046 Y CN201117046 Y CN 201117046Y
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Abstract
The utility model relates to a compound analog quantity linear temperature-sensing fire detector, which solves the problems of can not accurately alarm fire with the characteristic of temperature difference and easy to leak alarms, the technical proposal realizes that the compound analog quantity linear temperature-sensing fire detector comprises a temperature-sensing cable and a microcomputer connected box, the temperature-sensing cable is composed of two line conductors and temperature activated elements, wherein the line conductors are connected with the micro-computer connected box, the temperature activated elements are installed in parallel between the two line conductors every 0.2-1m, the temperature activated element is composed of a heat activated element and a bimetallic temperature switch, and both ends of the heat activated element and the bimetallic temperature switch are respectively connected with the two line conductors and the two line conductors can adopt a mode of mutual paralleled, coaxial sleeved and spiral inter-twisted. The compound analog quantity linear temperature-sensing fire detector has good responding and can realize the two alarm functions of temperature-setting and the temperature difference characteristic, and the use range and the reliability of the detector are both more improved than the prior art.
Description
Technical field:
The utility model relates to a kind of fire detecting and alarm device, particularly a kind of compound analog linear temperature-sensing fire detecting device.
Background technology:
Heat fire detector of the prior art is to survey a plurality of double metal temperature switch in parallel between the lead at two.Under the normal temperature conditions, all double metal temperature switch open circuit is considered as not alarm condition of detector, when a certain section of heat fire detector is heated the temperature that reaches certain, and the double metal temperature switch closure in this section, detector sends alerting signal.Because double metal temperature switch belongs to the switching signal output mode, in temperature changing process, there is not linear continuous output signal, so parallel connection double metal temperature switch formula line-type heat detector can only be set the alarm temperature warning to reaching, and to the ambient temperature ANOMALOUS VARIATIONS, fire as the differential temperature characteristic can not accurately be reported to the police, and fails to report fire easily.
Summary of the invention:
In order to address the above problem, the utility model provides a kind of compound analog linear temperature-sensing fire detecting device that can make line-type heat detector have constant temperature and the warning of differential temperature characteristic simultaneously, can in time find the condition of a fire, prevents to fail to report fire.
The utility model adopts following technical proposals to realize: compound analog linear temperature-sensing fire detecting device, form a complete signal acquisition circuit by temperature sensing cable and microcomputer terminal box; Temperature sensing cable is made up of two leads and temperature sensing element, lead is connected with the microcomputer terminal box, between two leads every 0.2～1m temperature sensing element in parallel, temperature sensing element is made up of thermistor and double metal temperature switch, and the two ends of thermistor and double metal temperature switch are connected with two leads respectively in the temperature sensing element.
Described lead can be a bare conductor, and two leads are parallel to each other.
Described lead can also be the lead that is covered with insulating sheath, and two leads are that spiral is stranded between per two temperature sensing elements.
Described two leads can also be that one of them is a core shape lead, and another is the shell-like lead, and core shape lead is coaxial to be enclosed within the shell-like lead, is provided with insulation course between two leads.
The analog linear temperature-sensing fire detecting device can also comprise an oversheath, in oversheath is coated on temperature sensing cable.
Thermistor can adopt commercial negative temperature coefficient or posistor.
The beneficial effects of the utility model are: thermistor and double metal temperature switch all have recoverable characteristic, and after temperature sensing cable was subjected to thermal warning, along with the reduction of environment temperature, thermistor and double metal temperature switch can return to normal operating conditions; Secondly, the thermistor resistance can linear continuous variation with temperature, makes detector can in time record the difference variation of surrounding environment, thereby can carry out good response to the fire of differential temperature characteristic; The 3rd, when double metal temperature switch reached its operating temperature, the switching signal of output can be identified rapidly, made detector make good response to the fire of constant temperature characteristic.Therefore, the utility model can be realized two kinds of warning functions of constant temperature and differential temperature characteristic according to actual conditions, and its scope of application, the more existing technology of reliability all improve a lot.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Fig. 3 is the cross-sectional structure synoptic diagram of temperature sensing cable among the utility model embodiment 3.
Embodiment
Embodiment is as shown in Figure 1:
Compound analog linear temperature-sensing fire detecting device is formed a complete signal acquisition circuit by temperature sensing cable and microcomputer terminal box 2; Temperature sensing cable is made up of two leads 1 and temperature sensing element, lead 1 is connected with microcomputer terminal box 2, lead 1 adopts bare conductor, be parallel to each other between two leads, between two leads every 0.2～1m temperature sensing element in parallel, temperature sensing element is made up of thermistor 3 and double metal temperature switch 4, and the two ends of thermistor 3 and double metal temperature switch 4 are connected with two leads respectively in the temperature sensing element.
In oversheath (not showing among the figure) is coated on temperature sensing cable.
Compound analog linear temperature-sensing fire detecting device is formed a complete signal acquisition circuit by microcomputer terminal box, temperature sensing cable, and the microcomputer terminal box is used for gathering the temperature change value of temperature sensing cable, output alarm signal; In the working environment of compound analog linear temperature-sensing fire detecting device in its permission, the resistance in parallel of thermistor within the limits prescribed, double metal temperature switch becomes the high resistant weak point to open state, the microcomputer terminal box is not sent fire alarm signal; Thermistor on temperature sensing cable is experienced the temperature that rises by certain heating rate, and the microcomputer terminal box will be calculated the change in resistance of thermistor in real time, reach the response time of this heating rate when this variation after, output differential temperature fire alarm signal; When the double metal temperature switch on the temperature sensing cable is experienced environment temperature above its operating temperature, switch closure, microcomputer terminal box output constant temperature fire alarm signal.
Embodiment is as shown in Figure 2:
Compound analog linear temperature-sensing fire detecting device is formed a complete signal acquisition circuit by temperature sensing cable and microcomputer terminal box 2; Temperature sensing cable is made up of two leads 1 and temperature sensing element, lead 1 is connected with microcomputer terminal box 2, between two leads every 0.2～1m temperature sensing element in parallel, lead adopts the lead that is covered with insulating sheath, two leads are that spiral is stranded between per two temperature sensing elements, temperature sensing element is made up of thermistor 3 and double metal temperature switch 4, and the two ends of thermistor 3 and double metal temperature switch 4 are connected with two leads respectively in the temperature sensing element.
In oversheath (not showing among the figure) is coated on temperature sensing cable.
Embodiment is as shown in Figure 3:
Compound analog linear temperature-sensing fire detecting device is formed a complete signal acquisition circuit by temperature sensing cable and microcomputer terminal box; Temperature sensing cable is made up of two leads and temperature sensing element 5, lead is connected with the microcomputer terminal box, two leads, one of them is a core shape lead 7, another is a shell-like lead 6, core shape lead 7 coaxial being enclosed within the shell-like lead 6, be provided with insulation course 8 between core shape lead 7 and the shell-like lead 6, between two leads every 0.2～1m temperature sensing element 5 in parallel, temperature sensing element 5 is made up of thermistor and double metal temperature switch, and the two ends of thermistor and double metal temperature switch are connected with two leads respectively in the temperature sensing element.
In oversheath (not showing among the figure) is coated on temperature sensing cable.
Claims (5)
1, compound analog linear temperature-sensing fire detecting device is characterized in that forming a complete signal acquisition circuit by temperature sensing cable and microcomputer terminal box; Temperature sensing cable is made up of two leads and temperature sensing element, lead is connected with the microcomputer terminal box, between two leads every 0.2～1m temperature sensing element in parallel, temperature sensing element is made up of thermistor and double metal temperature switch, and the two ends of thermistor and double metal temperature switch are connected with two leads respectively in the temperature sensing element.
2, according to the described compound analog linear temperature-sensing fire detecting device of claim 1, it is characterized in that described lead is a bare conductor, two leads are parallel to each other.
3, according to the described compound analog linear temperature-sensing fire detecting device of claim 1, it is characterized in that described lead is the lead that is covered with insulating sheath, two leads are that spiral is stranded between per two temperature sensing elements.
4, according to the described compound analog linear temperature-sensing fire detecting device of claim 1, it is characterized in that described two leads, one of them is a core shape lead, and another is the shell-like lead, core shape lead is coaxial to be enclosed within the shell-like lead, is provided with insulation course between two leads.
5, according to the described analog linear temperature-sensing fire detecting device of claim 1, it is characterized in that also comprising an oversheath, in oversheath is coated on temperature sensing cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200158877U CN201117046Y (en) | 2007-11-15 | 2007-11-15 | Composite type simulation quantity line-type temperature-sensing fire hazard detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200158877U CN201117046Y (en) | 2007-11-15 | 2007-11-15 | Composite type simulation quantity line-type temperature-sensing fire hazard detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201117046Y true CN201117046Y (en) | 2008-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200158877U Expired - Fee Related CN201117046Y (en) | 2007-11-15 | 2007-11-15 | Composite type simulation quantity line-type temperature-sensing fire hazard detector |
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| CN (1) | CN201117046Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376677A (en) * | 2014-12-09 | 2015-02-25 | 江苏中实电子有限公司 | High-sensitivity composite linear heat fire detector and alarming method thereof |
| CN110160666A (en) * | 2019-05-22 | 2019-08-23 | 中国船舶重工集团公司第七一九研究所 | A kind of radiation resistance multi-point temperature measurement sensor |
| CN110969797A (en) * | 2019-11-14 | 2020-04-07 | 中国航空工业集团公司西安航空计算技术研究所 | Aviation fire alarm monitoring method and circuit |
-
2007
- 2007-11-15 CN CNU2007200158877U patent/CN201117046Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376677A (en) * | 2014-12-09 | 2015-02-25 | 江苏中实电子有限公司 | High-sensitivity composite linear heat fire detector and alarming method thereof |
| CN110160666A (en) * | 2019-05-22 | 2019-08-23 | 中国船舶重工集团公司第七一九研究所 | A kind of radiation resistance multi-point temperature measurement sensor |
| CN110969797A (en) * | 2019-11-14 | 2020-04-07 | 中国航空工业集团公司西安航空计算技术研究所 | Aviation fire alarm monitoring method and circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20101115 |