CN111462950A - Temperature-sensing fire detection cable - Google Patents
Temperature-sensing fire detection cable Download PDFInfo
- Publication number
- CN111462950A CN111462950A CN202010392909.1A CN202010392909A CN111462950A CN 111462950 A CN111462950 A CN 111462950A CN 202010392909 A CN202010392909 A CN 202010392909A CN 111462950 A CN111462950 A CN 111462950A
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- temperature
- conductor
- detection
- control chip
- fuse
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- 238000001514 detection method Methods 0.000 title claims abstract description 87
- 239000004020 conductor Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 description 8
- 238000009413 insulation Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/324—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising temperature sensing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/003—Power cables including electrical control or communication wires
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a temperature-sensing fire detection cable, which comprises two conductors, wherein the conductors are externally provided with insulating layers, an insulating tape is connected between the insulating layers, and the insulating layers and the insulating tapes are externally provided with outer sheaths; a plurality of detection modules are arranged on the insulating tape at intervals and electrically connected with the conductor; the detection module comprises a temperature sensing element and a temperature control chip, the temperature sensing element measures temperature and transmits measured temperature data to the temperature control chip, and the temperature control chip processes the received temperature data and transmits the temperature data through a connection point and a conductor; the detection modules are connected in series through a fuse wire, the temperature control chip monitors the current flowing through the detection modules through the fuse wire in real time to obtain on and off signals of the current of the fuse wire, and the temperature control chip processes the received on and off signals and transmits the on and off signals through a connecting point and a conductor; the cable has the functions of temperature detection alarm, positioning, electric energy supply and signal transmission, self protection and the like.
Description
Technical Field
The invention relates to a cable with temperature detection and alarm functions, which can detect fire and realize self-protection on the basis of electric energy supply and signal transmission.
Background
The society pays more and more attention to the problem of fire safety, especially detection and early warning before the conflagration takes place, can effectually prevent that the conflagration from spreading, avoids causing bigger personnel's injury and loss of property. Currently, independent photoelectric smoke alarms or temperature-sensitive alarms are commonly used in the market, wherein the former triggers an alarm system by measuring the change of smoke concentration in the area where the alarm is located, and the latter triggers the alarm system by measuring the change of temperature in the area where the alarm is located. These stand alone alarms suffer from the following disadvantages:
1. the working principle of the smoke alarm or the temperature control alarm is that a light-transmitting detection element or a temperature sensing test element is arranged in the smoke alarm or the temperature control alarm, and the smoke alarm or the temperature control alarm cannot continuously monitor and accurately position the interior of a building because the smoke alarm or the temperature sensing test element is arranged at intervals.
2. The existing fireproof alarm mostly adopts a battery or a power line to independently supply power, and then is additionally connected with a signal transmission line to achieve the purposes of continuous work and alarm signal transmission, but the mode has a complex structure and is tedious to lay.
3. The existing fire alarm cannot protect a signal transmission line or an electric energy supply line.
Disclosure of Invention
The invention aims to solve the technical problem of providing a temperature-sensing fire detection cable which has the functions of temperature detection alarm, positioning, power supply, signal transmission, self protection and the like.
In order to solve the technical problem, the temperature-sensing fire detection cable comprises two conductors, wherein insulation layers are arranged outside the conductors, an insulation belt is connected between the insulation layers of the two conductors, and outer sheaths are arranged outside the insulation layers and the insulation belts.
The detection device comprises an outer sheath, an insulating belt, a conductor, a plurality of detection modules and a plurality of detection modules, wherein the insulating belt is provided with connection points at intervals along the axial direction of the conductor in the outer sheath, the connection points are electrically connected with the conductor, power is supplied to the detection modules, data of the detection modules are transmitted to the conductor, and the data are transmitted through the conductor; the detection module comprises a temperature sensing element and a temperature control chip, the temperature sensing element measures temperature and transmits measured temperature data to the temperature control chip, and the temperature control chip processes the received temperature data and transmits the temperature data through a connection point and a conductor.
The detection modules are connected in series through a fuse wire, specifically, the detection modules are provided with welding contacts, and the fuse wire is welded on the welding contacts. The temperature control chip is provided with a fuse wire current monitoring module, the fuse wire current monitoring module monitors the current of the fuse wire flowing through the detection module in real time to obtain the switching-on and switching-off signals of the fuse wire current, and the temperature control chip processes the received switching-on and switching-off signals and transmits the signals through the connecting point and the conductor.
The invention makes the two-core signal power line into a band-shaped structure, fixes the detection module between the two-core power line by welding with the conductor, the interval length of the detection module is 1 meter or other lengths, and connects the detection module with the conductor by a fuse wire. The temperature sensing fire detection cable can be continuously laid in a corresponding closed space as required, namely, a corresponding detector is arranged in 1m or other distances, when the ambient temperature exceeds a set value of 80 ℃, a temperature sensing element can transmit a temperature signal to a temperature control chip, the temperature control chip can process the temperature signal, if the temperature signal is transmitted to terminal control equipment through a conductor, the alarm purpose is achieved, meanwhile, the temperature control chip feeding back the signal also has a code, and the fire positioning purpose can be achieved.
The temperature sensing element and the temperature control chip are integrated in the same detection module, and then the temperature sensing element and the temperature control chip are integrally installed in the middle of the strip signal power line. The detection module and the signal power line conductor are connected together in a welding mode, the power supply problem of the detection module is effectively solved, the detection module can work stably for a long time, and meanwhile, the signal power line is also used as a carrier of signal transmission, so that the detection module has the advantages of small size, convenience in laying and the like.
The invention uses the fuse to connect all the detection modules together, when the environment temperature exceeds the maximum temperature of 180 ℃ allowed by the temperature-sensing fire detection cable, the fuse is fused and automatically disconnected, the conducting circuit is disconnected, the temperature control chip acquires the conducting circuit turn-off signal, the temperature control chip processes the fuse break signal and transmits the processed signal to the terminal control equipment through a signal power line (namely a conductor), and the terminal control equipment disconnects the power supply of the whole circuit, thereby achieving the purpose of protecting the whole circuit.
Preferably, a plurality of slots are arranged on the insulating belt at intervals, and the detection modules are placed in the slots.
In order to facilitate installation and fixation of the fuse wire, the surface of the insulating belt is provided with a C-shaped groove, and the fuse wire is installed in the C-shaped groove.
In order to facilitate the flowing of the fuse wire after the fuse wire is melted at high temperature, a fuse wire slot is formed in the insulating tape between the detection modules, and the fuse wire penetrates through the fuse wire slot.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the temperature sensing element, the temperature control chip and the fuse wire are connected in the detection module (such as an integrated circuit board), welding contacts for connecting conductors are reserved on two sides of the detection module, and the temperature sensing element and the fuse wire can be in good contact with the outer sheath after the outer sheath is extruded by the structural design, so that external temperature change can be conducted to the temperature sensing element and the fuse wire through the outer sheath in time.
2. The detection modules are convenient to install through the detection module slots, the fuse wire slots are formed in the middle of the two detection modules, the fuse wire can flow after being melted at high temperature, and meanwhile, the C-shaped slots on the surface of the insulating belt can be used for installing and fixing the fuse wire.
3. The detection module is connected with the signal power line through welding contacts (connection points) reserved on two sides of the detection module and a stripped insulated signal power line conductor in a spot welding manner; the detection module is connected with the fuse wire through welding contacts and the fuse wire which are reserved in the front and the back of the detection module in a spot welding mode. The groove hole and the C-shaped groove reserved on the signal power line are matched to form a compact whole in the above mode.
4. Because the temperature sensing element and the temperature control chip are continuously laid at an interval of 1m (or other lengths) (the maximum length can reach 2km), the temperature sensing element and the temperature control chip can be continuously laid in a long and narrow closed space at a large length without the help of other repeaters, and real-time fire detection alarm and positioning are carried out in the closed space.
5. All the detection modules are connected together by using the fuse wire, a fuse wire slot is formed in the middle of the two integrated circuit boards, and when the ambient temperature exceeds the maximum temperature (such as 180 ℃) allowed by the temperature-sensing fire detection cable, the fuse wire can be disconnected in the fuse wire slot, so that the whole line is protected.
6. The invention solves the problem of repeated laying of signal wires and power wires, and has simple structure and convenient construction.
7. The outer sheath of the invention adopts low-smoke halogen-free thermoplastic elastomer material with high temperature resistance, flame retardance and excellent heat conducting property, thus ensuring that the cable can not delay burning and can not cause injury to human bodies if a fire disaster occurs when the cable is laid in a closed space.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of a temperature-sensitive fire detection cable without a detection module installed.
Fig. 2 is a top view of a detection module.
FIG. 3 is a side view of a detection module.
Fig. 4 is a schematic view of a temperature-sensitive fire detection cable with a detection module installed.
Fig. 5 is a sectional view of a temperature sensitive fire detection cable.
Detailed Description
As shown in fig. 1 to 5, the temperature-sensitive fire detection cable includes two conductors 1, an insulating layer 2 is provided outside the conductors 1, an insulating tape 4 is connected between the insulating layers 2 of the two conductors 1, and an outer sheath 8 is provided outside the insulating layers 2 and the insulating tape 4. The outer sheath 8 is made of low-smoke halogen-free thermoplastic elastomer materials with high temperature resistance, flame retardance and excellent heat conducting performance, so that when the cable is laid in a closed space, if a fire disaster happens, the cable cannot be delayed to burn, and the personal injury cannot be caused.
In the outer sheath 8, along the axial of conductor 1, set up a slotted hole 5 at interval 1m on the insulating strip 4, install the detection module in the slotted hole 5, the both sides of detecting the module all have tie point 13, tie point 13 is connected with conductor 1 (the insulating layer of conductor 1 is cut open) spot welding electricity, for the detection module power supply.
The detection module comprises a temperature sensing element 9 and a temperature control chip 11 (such as SW6015), wherein the temperature sensing element 9 measures the temperature conducted by the outer sheath 8 and transmits the measured temperature data to the temperature control chip 11. The temperature control chip 11 processes the received temperature data and transmits the data through the connection point 13 and the conductor 1, transmits the data of the detection module to the conductor 1, and transmits the data to the terminal control device through the conductor 1. Namely, the temperature information data is transmitted to the terminal control equipment through the conductor 1, so that the purpose of alarming is achieved, and meanwhile, the temperature control chip 11 for feeding back signals also has codes, so that the purpose of positioning fire disasters can be achieved.
The detection modules are connected in series through the fuse wire 7, the heads and the tails of the detection modules are provided with welding contacts 12, and the fuse wire 7 is welded on the welding contacts 12. The surface of the insulating tape 4 is provided with a C-shaped groove 3, the fuse wire 7 is installed in the C-shaped groove 3, the width of the notch is slightly smaller than the diameter of the fuse wire 7, the fuse wire 7 can be automatically locked after being placed in, and the influence on the appearance of a finished product caused by jumping out of the fuse wire can be avoided. Meanwhile, between the detection modules, a fuse wire slot hole 6 is formed in the insulating tape 4, and the fuse wire 7 penetrates through the fuse wire slot hole 6. The temperature control chip 11 is provided with a fuse current monitoring module, the fuse current monitoring module monitors the current of the fuse 7 flowing through the detection module in real time to obtain the on and off signals of the current of the fuse 7, the temperature control chip processes the received on and off signals and transmits the on and off signals through the connection point 13 and the conductor 1, namely, the data of the detection module is transmitted to the conductor 1, and the data is transmitted through the conductor 1.
When the cable normally works, the fuse 7 is connected with a weak current (if two ends of the fuse 7 are connected to the terminal equipment, the terminal equipment applies a low voltage to the fuse 7 to enable the fuse 7 to be connected with the weak current), and the weak current is connected on a circuit formed by connecting the fuse 7 and the detection module in series. The fuse current monitoring module (integrated current sensing device) monitors the current of the fuse 7 flowing through the detection module in real time. When the temperature of the environment of the outer sheath 8 exceeds 180 ℃, the temperature is conducted to the fuse wire 7 through the outer sheath 8, so that the fuse wire 7 is fused, weak current on a circuit formed by connecting the fuse wire 7 and the detection module in series disappears, the temperature control chip 11 acquires a disconnection signal, the temperature control chip 11 transmits the disconnection signal of the fuse wire 7 to the terminal control equipment through a signal power line (namely, the conductor 1) after the disconnection signal is processed, the terminal control equipment disconnects the power supply of the whole circuit, and the purpose of protecting the whole circuit is achieved.
In the invention, the signal power line (i.e. the conductor 1) can provide electric energy for the temperature control chip 11 and can also be used as a signal line to transmit signals. For example, the temperature control chip 11 on the detection module transmits the open circuit signal of the fuse 7 to the terminal control device through the signal power line.
The terminal equipment using the cable of the invention receives signals such as fire detection alarm and positioning transmitted by the detection module through the conductor 1 of the cable of the invention and performs corresponding operations (such as power off).
The above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims (5)
1. The temperature-sensing fire detection cable is characterized by comprising two conductors, wherein the conductors are externally provided with insulating layers, an insulating tape is connected between the insulating layers of the two conductors, and the insulating layers and the insulating tapes are externally provided with outer sheaths;
the detection device comprises an outer sheath, an insulating belt, a conductor, a plurality of detection modules and a plurality of detection modules, wherein the insulating belt is provided with connection points at intervals along the axial direction of the conductor in the outer sheath, the connection points are electrically connected with the conductor, power is supplied to the detection modules, data of the detection modules are transmitted to the conductor, and the data are transmitted through the conductor;
the detection module comprises a temperature sensing element and a temperature control chip, the temperature sensing element measures temperature and transmits measured temperature data to the temperature control chip, and the temperature control chip processes the received temperature data and transmits the temperature data through a connection point and a conductor;
the detection modules are connected in series through a fuse, the temperature control chip is provided with a fuse current monitoring module, the fuse current monitoring module monitors the current flowing through the detection modules through the fuse in real time to obtain on and off signals of the fuse current, and the temperature control chip processes the received on and off signals and transmits the on and off signals through a connecting point and a conductor.
2. The temperature-sensitive fire detection cable according to claim 1, wherein: a plurality of slots are arranged on the insulating belt at intervals, and the detection modules are placed in the slots.
3. The temperature-sensitive fire detection cable according to claim 1, wherein: the surface of the insulating belt is provided with a C-shaped groove, and the fuse wire is arranged in the C-shaped groove.
4. The temperature-sensitive fire detection cable according to claim 1, wherein: and a fuse wire slot hole is formed in the insulating tape between the detection modules, and the fuse wire penetrates through the fuse wire slot hole.
5. The temperature-sensitive fire detection cable according to claim 1, wherein: the detection module is provided with a welding contact, and the fuse wire is welded on the welding contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392909.1A CN111462950A (en) | 2020-05-11 | 2020-05-11 | Temperature-sensing fire detection cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392909.1A CN111462950A (en) | 2020-05-11 | 2020-05-11 | Temperature-sensing fire detection cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111462950A true CN111462950A (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010392909.1A Pending CN111462950A (en) | 2020-05-11 | 2020-05-11 | Temperature-sensing fire detection cable |
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| Country | Link |
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| CN (1) | CN111462950A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227454A1 (en) * | 2020-05-11 | 2021-11-18 | 江苏中利集团股份有限公司 | Temperature-sensing fire detection cable |
| CN116066764A (en) * | 2023-02-22 | 2023-05-05 | 河北君业科技股份有限公司 | Leakage detection and positioning method for thermal pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201307322Y (en) * | 2008-12-10 | 2009-09-09 | 蚌埠依爱消防电子有限责任公司 | Electric fire detector based on firefighting warning linkage bus |
| CN102592392A (en) * | 2012-03-06 | 2012-07-18 | 曾学义 | Linear temperature sensing fire detector and alarm method thereof |
| CN105869339A (en) * | 2016-06-17 | 2016-08-17 | 无锡圣敏传感科技股份有限公司 | Line type heat fire detector |
| CN211699808U (en) * | 2020-05-11 | 2020-10-16 | 江苏中利集团股份有限公司 | Temperature-sensing fire detection cable |
-
2020
- 2020-05-11 CN CN202010392909.1A patent/CN111462950A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201307322Y (en) * | 2008-12-10 | 2009-09-09 | 蚌埠依爱消防电子有限责任公司 | Electric fire detector based on firefighting warning linkage bus |
| CN102592392A (en) * | 2012-03-06 | 2012-07-18 | 曾学义 | Linear temperature sensing fire detector and alarm method thereof |
| CN105869339A (en) * | 2016-06-17 | 2016-08-17 | 无锡圣敏传感科技股份有限公司 | Line type heat fire detector |
| CN211699808U (en) * | 2020-05-11 | 2020-10-16 | 江苏中利集团股份有限公司 | Temperature-sensing fire detection cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227454A1 (en) * | 2020-05-11 | 2021-11-18 | 江苏中利集团股份有限公司 | Temperature-sensing fire detection cable |
| CN116066764A (en) * | 2023-02-22 | 2023-05-05 | 河北君业科技股份有限公司 | Leakage detection and positioning method for thermal pipeline |
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