CN205405787U - Past retrieve cable type linetype temperature -sensing fire disaster detector - Google Patents
Past retrieve cable type linetype temperature -sensing fire disaster detector Download PDFInfo
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- CN205405787U CN205405787U CN201620163975.0U CN201620163975U CN205405787U CN 205405787 U CN205405787 U CN 205405787U CN 201620163975 U CN201620163975 U CN 201620163975U CN 205405787 U CN205405787 U CN 205405787U
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Abstract
The utility model discloses a past retrieve cable type linetype temperature -sensing fire disaster detector, including temperature sensing part, signal processing unit, terminating resistance R1 and terminating resistance R2, the temperature sensing parts are including parallel fusible alloy silk, a metallic conductor, the 2nd metallic conductor and the 3rd metallic conductor who sets up, signal processing unit includes the operation device to and the alarm output device and the two sets of electric signal measurement device that link to each other with the operation device, wherein a formation measurement circuit is connected with fusible alloy silk, terminating resistance R1 and a metallic conductor to a set of electric signal measurement device, the 2nd measurement circuit of formation is connected with the 2nd metallic conductor, terminating resistance R2 and the 3rd metallic conductor to another electric signal measurement device of group, second, the 3rd metallic conductor cover outward has NTC characteristic material layer, second, the outside NTC characteristic material layer laminating of the 3rd metallic conductor. The utility model discloses it is rational in infrastructure, have fine stability, reliability, and easily construction.
Description
Technical field
This utility model belongs to fire detecting and alarm technical field in safety engineering discipline, is specifically related to a kind of fire detector.
Background technology
At present, the beyond-retrieve-type cable-type line-type heat fire detector of prior art is stranded after easily being melted plastic layer by two spring steel wire outsourcings forming.When being heated around temperature-sensitive cable, after temperature reaches certain melting point, easily melting plastic layer softening or melted, the torsion by spring steel wire destroys easily melting plastic layer, makes to contact between spring steel wire, is namely short-circuited, thus reaching the purpose reported to the police.But the conductor owing to using in this temperature sensing cable is spring steel wire, its torsion is big especially, is subject to the impact of unwrapping wire pulling force in temperature-sensitive cable process of deployment, thus causing that two spring steel wires are short-circuited situation.It is subject to the impact of damaged by rats or external mechanical force after next detector is properly functioning, makes two spring steel wire short circuits send fire alarm, thus error starting extinguishing device.Furthermore spring steel wire gets rusty easily in a humid environment, thus the resistance value added between two spring steel wires, leverage the reliability and stability of fire-fighting system.
Due to the existence of the problems referred to above, greatly limit the range of application of the beyond-retrieve-type cable-type line-type heat fire detector of prior art.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of beyond-retrieve-type cable-type line-type heat fire detector, has good stability, reliability, and is prone to construction.
Technical scheme: for solving above-mentioned technical problem, a kind of beyond-retrieve-type cable-type line-type heat fire detector that this utility model provides, including temperature sensing part, signal processing unit, terminal resistance R1 and terminal resistance R2；
Described temperature sensing part includes parallel arrangement of fusible alloy silk, the first metallic conductor, the second metallic conductor and the 3rd metallic conductor；Described signal processing unit includes arithmetic processing apparatus, and the alarm output device being connected with arithmetic processing apparatus and two groups of electric signal measurement devices；
One of which electric signal measurement device is connected formation the first measurement loop with fusible alloy silk, terminal resistance R1 and the first metallic conductor；Another group electric signal measurement device and the second metallic conductor, terminal resistance R2 and the 3rd metallic conductor connect formation the second measurement loop；
Being covered with NTC elastomeric material layer outside second, third metallic conductor described, the NTC elastomeric material laminating outside second, third metallic conductor described closes.
Preferably, described electric signal measurement device is be connected with temperature sensing part, it is possible to temperature sensing part carries out the electric signal measurement device of signal parameter collection in real time；
Described arithmetic processing apparatus, the comparative result for the signal parameter according to electric signal measurement device collection Yu predetermined threshold value is detected the judgement of device duty and carries out the arithmetic processing apparatus of fire alarm and fault alarm.
As a kind of preferred version, parallel arrangement of fusible alloy silk in temperature sensing part, with the first metallic conductor of outer insulating layer coating, and second, third metallic conductor of being covered with outward NTC elastomeric material layer is parallel be close to or be equidistantly twisted into one after, outer insulating layer coating forms the total cable of single temperature-sensitive.
As another kind of preferred version, in described temperature sensing part, parallel arrangement of fusible alloy silk is parallel with the first metallic conductor of outer insulating layer coating is close to or is equidistantly twisted into after integrally, outer insulating layer coating forms the first cable；In described temperature sensing part parallel arrangement of second parallel with the 3rd metallic conductor be close to or be equidistantly twisted into one after, outer insulating layer coating forms the second cable.
It is further preferred that described first cable and the second cable parallel be close to or be equidistantly twisted into one after outer insulating layer coating form the total cable of single temperature-sensitive.
Preferably, described first metallic conductor and the second metallic conductor are the measurement common port metallic conductor being covered with NTC elastomeric material layer outside same.
It is preferred that, parallel arrangement of fusible alloy silk in described temperature sensing part, after being covered with outward that the measurement common port metallic conductor of NTC elastomeric material layer, the 3rd metallic conductor are parallel and being close to or be equidistantly twisted into one, outer insulating layer coating forms the total cable of single temperature-sensitive.
Preferably, often group electric signal measurement device includes front end circuit, filter circuit, amplifying circuit and A/D convertor circuit；The input of described front end circuit is connected with temperature sensing part, is sequentially connected with filter circuit, amplifying circuit and A/D convertor circuit after front end circuit, and the output of described A/D convertor circuit is connected with arithmetic processing apparatus.
Beneficial effect: the beyond-retrieve-type cable-type line-type heat fire detector that this utility model provides, it is rational in infrastructure, sensitive practicality, improves stability and the reliability of detector in fire-fighting system on the one hand, greatly reduces the construction in engineer applied and maintaining difficulty on the other hand.
Accompanying drawing explanation
The structural representation of the beyond-retrieve-type cable-type line-type heat fire detector that Fig. 1 provides for embodiment 1；
Fig. 2 is longitudinal sectional structure schematic diagram of temperature sensing part in embodiment 3；
Fig. 3 is the horizontal sectional structure schematic diagram of temperature sensing part in embodiment 3.
Detailed description of the invention
Embodiment 1: as it is shown in figure 1, the beyond-retrieve-type cable-type line-type heat fire detector that the present embodiment provides, including temperature sensing part, signal processing unit, terminal resistance R1 and terminal resistance R2.Described signal processing unit includes arithmetic processing apparatus, and the alarm output device being connected with arithmetic processing apparatus and two groups of electric signal measurement devices.
Described temperature sensing part includes parallel arrangement of fusible alloy silk, the first metallic conductor, the second metallic conductor and the 3rd metallic conductor.
Two groups of electric signal measurement device respectively first, second electric signal measurement devices, wherein the first electric signal measurement device is connected formation the first measurement loop with fusible alloy silk, terminal resistance R1 and the first metallic conductor；Second electric signal measurement device and the second metallic conductor, terminal resistance R2 and the 3rd metallic conductor connect formation the second measurement loop.
The outer insulating layer coating of described first metallic conductor, is covered with NTC elastomeric material layer outside second, third metallic conductor, the NTC elastomeric material laminating outside second, third metallic conductor described closes.
Described electric signal measurement device is be connected with temperature sensing part, it is possible to temperature sensing part carries out the electric signal measurement device of signal parameter collection in real time；Described arithmetic processing apparatus, the comparative result for the signal parameter according to electric signal measurement device collection Yu predetermined threshold value is detected the judgement of device duty and carries out the arithmetic processing apparatus of fire alarm and fault alarm.
Parallel arrangement of fusible alloy silk in temperature sensing part, and the first metallic conductor of outer insulating layer coating, and second, third metallic conductor of being covered with outward NTC elastomeric material layer is parallel be close to or be equidistantly twisted into one after, outer insulating layer coating forms the total cable of single temperature-sensitive.
Often group electric signal measurement device includes front end circuit, filter circuit, amplifying circuit and A/D convertor circuit；The input of described front end circuit is connected with temperature sensing part, is sequentially connected with filter circuit, amplifying circuit and A/D convertor circuit after front end circuit, and the output of described A/D convertor circuit is connected with arithmetic processing apparatus.
In the present embodiment, the head end of fusible alloy silk and the first electric signal measurement device connect, and end is connected with one end of terminal resistance R1, and the head end of described first metallic conductor and the first electric signal measurement device connect, and end is connected with the other end of terminal resistance R1；The head end of described second metallic conductor and the second electric signal measurement device connect, and end is connected with one end of terminal resistance R2, and the head end of described 3rd metallic conductor and the second electric signal measurement device connect, and end is connected with the other end of terminal resistance R2.
Embodiment 2: essentially identical with embodiment 1 structure, something in common is not repeated, institute the difference is that:
In described temperature sensing part, parallel arrangement of fusible alloy silk is parallel with the first metallic conductor of outer insulating layer coating is close to or is equidistantly twisted into after integrally, outer insulating layer coating forms the first cable；In described temperature sensing part parallel arrangement of second parallel with the 3rd metallic conductor be close to or be equidistantly twisted into one after, outer insulating layer coating forms the second cable.
Described first cable and the second cable parallel be close to or be equidistantly twisted into one after outer insulating layer coating form the total cable of single temperature-sensitive.
Embodiment 3: essentially identical with embodiment 1 structure, something in common is not repeated, institute the difference is that:
In the present embodiment 2, described first metallic conductor and the second metallic conductor are same metallic conductor, and as measuring common port metallic conductor, what this measurement common port metallic conductor was cladded with is one layer of NTC elastomeric material layer.
As in figure 2 it is shown, described temperature sensing part includes parallel arrangement of fusible alloy silk 1, measures common port metallic conductor 2 and the 3rd metallic conductor 3.
One of which electric signal measurement device is connected formation the first measurement loop with fusible alloy silk 1, terminal resistance R1 and measurement common port metallic conductor 2；Another group electric signal measurement device is connected formation the second measurement loop with measuring common port metallic conductor 2, terminal resistance R2 and the 3rd metallic conductor 3.
As shown in Figures 2 and 3, being covered with NTC elastomeric material layer 4 outside described measurement common port metallic conductor 2 and the 3rd metallic conductor 3, the NTC elastomeric material laminating outside described measurement common port metallic conductor 2 and the 3rd metallic conductor 3 closes.
Parallel arrangement of fusible alloy silk 1 in described temperature sensing part, parallel with measurement common port metallic conductor the 2, the 3rd metallic conductor 3 being covered with outward NTC elastomeric material layer be close to or be equidistantly twisted into one after, outer insulating layer coating forms the total cable of single temperature-sensitive.
In the present embodiment, the head end of fusible alloy silk 1 and the first electric signal measurement device connect, and end is connected with one end of terminal resistance R1；The head end of described measurement common port metallic conductor 2 and first, second electric signal measurement device connect, and end is connected with the other end of terminal resistance R1 and one end of terminal resistance R2；The head end of described 3rd metallic conductor 3 and the second electric signal measurement device connect, and end is connected with the other end of terminal resistance R2.
For embodiment 3, set forth operation principle of the present utility model:
In the present embodiment 3, wherein the metallic conductor (measuring common port metallic conductor 2) of a fusible alloy silk 1 and an outsourcing NTC elastomeric material is carried out signals collecting with the terminal resistance R1 circuit being connected by the first electric signal measurement device, the metallic conductor (wherein one is measurement common port metallic conductor 2, and another root is the 3rd metallic conductor 3) of two outsourcing NTC elastomeric material is carried out signals collecting with the terminal resistance R2 circuit being connected by the second electric signal measurement device.And send the two groups of data values gathered to data processing equipment, carry out judgement properly functioning, fire, fault according to calculation process result.When having fire alarm or fault alarm occurs, arithmetic processing apparatus starts alarm output device, and specific works principle is as follows:
(1): after normal power supply, the metallic conductor (measuring common port metallic conductor 2) of a piece fusible alloy silk 1 and an outsourcing NTC elastomeric material is carried out signals collecting with the terminal resistance R1 circuit being connected by the first electric signal measurement device, the metallic conductor (wherein one is measurement common port metallic conductor 2, and another root is the 3rd metallic conductor 3) of two outsourcing NTC elastomeric material is carried out signals collecting with the terminal resistance R2 circuit being connected by the second electric signal measurement device.Its resistance value collected respectively R1 and R2 in theory.
(2): when cable linear temperature sensing parts short-circuit between conductors, open circuit, the signal of telecommunication that its two groups of electric signal measurement devices gather will change.When short circuit occurs, the termination resistance value of corresponding electric signal measurement device collection will be 0, when line broken circuit occurs, the line terminal value of corresponding electric signal measurement device collection is theoretically+∞, once above-mentioned two situations occur, in conjunction with corresponding fault algorithms, alarm output device output fault-signal.
During real work, it is referred to following determination methods:
(1) when the first electric signal measurement device circuit is short-circuited, the termination resistance value of its collection is 0, then judge now have fault to occur；When the first electric signal measurement device circuit generation open circuit, the termination resistance value of its collection is close+∞, judge whether the second electric signal measurement device changes simultaneously, during as being not changed in relative to data before or be not reaching to change threshold, be then judged to fault.
(2) when the second electric signal measurement device circuit is short-circuited, the termination resistance value of its collection is 0, then judge now have fault to occur；When the second electric signal measurement device circuit generation open circuit, the termination resistance value of its collection is close+∞, then be judged to fault.
Above-mentioned situation occurs, then be determined with fault and occur, alarm output device output fault-signal.
(3) data that: around cable linear temperature sensing parts during breaking out of fire, these two groups of electric signal measurement devices record will change.When temperature reaches fusible alloy silk fusing-off temperature T (DW1), fusible alloy silk fuses, the resistance that first measurement loop records will become close+∞ or have significant change relative to R1, and simultaneously, the measurement loop that the metallic conductor of two outsourcing NTC (negative temperature coefficient material) elastomeric material is connected by the second electric signal measurement device with terminal resistance R2 carries out signals collecting, obtain now NTC elastomeric material between two metallic conductors vary with temperature and the resistance that reduces in parallel with R2 after corresponding parallel resistance value R2, this parallel resistance value R2 is significantly reduced (these changes can adopt the modes such as comparison with default change threshold to judge) relative to R2.Can determine whether now have fire to occur when both meet simultaneously, namely alarm output device sends fire alarm signal.
What this utility model was protected is the structure of the beyond-retrieve-type cable-type line-type heat fire detector provided.More than implementing row and this utility model does not constitute restriction, relevant staff is in the scope not necessarily departing from this utility model technological thought, and what carry out various changes and modifications, and all falls within protection domain of the present utility model.
Claims (8)
1. a beyond-retrieve-type cable-type line-type heat fire detector, it is characterised in that: include temperature sensing part, signal processing unit, terminal resistance R1 and terminal resistance R2；
Described temperature sensing part includes parallel arrangement of fusible alloy silk, the first metallic conductor, the second metallic conductor and the 3rd metallic conductor；Described signal processing unit includes arithmetic processing apparatus, and the alarm output device being connected with arithmetic processing apparatus and two groups of electric signal measurement devices；
One of which electric signal measurement device is connected formation the first measurement loop with fusible alloy silk, terminal resistance R1 and the first metallic conductor；Another group electric signal measurement device and the second metallic conductor, terminal resistance R2 and the 3rd metallic conductor connect formation the second measurement loop；
Being covered with NTC elastomeric material layer outside second, third metallic conductor described, the NTC elastomeric material laminating outside second, third metallic conductor described closes.
2. beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, it is characterised in that:
Described electric signal measurement device is be connected with temperature sensing part, it is possible to temperature sensing part carries out the electric signal measurement device of signal parameter collection in real time；
Described arithmetic processing apparatus, the comparative result for the signal parameter according to electric signal measurement device collection Yu predetermined threshold value is detected the judgement of device duty and carries out the arithmetic processing apparatus of fire alarm and fault alarm.
3. beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, it is characterized in that: parallel arrangement of fusible alloy silk in temperature sensing part, the first metallic conductor with outer insulating layer coating, and outer second, third metallic conductor being covered with NTC elastomeric material layer is parallel be close to or be equidistantly twisted into one after, outer insulating layer coating forms the total cable of single temperature-sensitive.
4. beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, it is characterized in that: in described temperature sensing part, parallel arrangement of fusible alloy silk is parallel with the first metallic conductor of outer insulating layer coating is close to or is equidistantly twisted into after integrally, outer insulating layer coating forms the first cable；In described temperature sensing part parallel arrangement of second parallel with the 3rd metallic conductor be close to or be equidistantly twisted into one after, outer insulating layer coating forms the second cable.
5. beyond-retrieve-type cable-type line-type heat fire detector according to claim 4, it is characterised in that: described first cable and the second cable parallel be close to or be equidistantly twisted into one after outer insulating layer coating form the total cable of single temperature-sensitive.
6. the beyond-retrieve-type cable-type line-type heat fire detector according to claim 1 to 2 any claim, it is characterised in that: described first metallic conductor and the second metallic conductor are the measurement common port metallic conductor being covered with NTC elastomeric material layer outside same.
7. beyond-retrieve-type cable-type line-type heat fire detector according to claim 6, it is characterized in that: parallel arrangement of fusible alloy silk in described temperature sensing part, after being covered with outward that the measurement common port metallic conductor of NTC elastomeric material layer, the 3rd metallic conductor are parallel and being close to or be equidistantly twisted into one, outer insulating layer coating forms the total cable of single temperature-sensitive.
8. beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, it is characterised in that: often group electric signal measurement device includes front end circuit, filter circuit, amplifying circuit and A/D convertor circuit；The input of described front end circuit is connected with temperature sensing part, is sequentially connected with filter circuit, amplifying circuit and A/D convertor circuit after front end circuit, and the output of described A/D convertor circuit is connected with arithmetic processing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620163975.0U CN205405787U (en) | 2016-03-03 | 2016-03-03 | Past retrieve cable type linetype temperature -sensing fire disaster detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620163975.0U CN205405787U (en) | 2016-03-03 | 2016-03-03 | Past retrieve cable type linetype temperature -sensing fire disaster detector |
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| Publication Number | Publication Date |
|---|---|
| CN205405787U true CN205405787U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620163975.0U Active CN205405787U (en) | 2016-03-03 | 2016-03-03 | Past retrieve cable type linetype temperature -sensing fire disaster detector |
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| Country | Link |
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| CN (1) | CN205405787U (en) |
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2016
- 2016-03-03 CN CN201620163975.0U patent/CN205405787U/en active Active
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