CN220041215U - Analog alarm detection device for differential constant temperature type temperature sensing cable - Google Patents
Analog alarm detection device for differential constant temperature type temperature sensing cable Download PDFInfo
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- CN220041215U CN220041215U CN202320351922.1U CN202320351922U CN220041215U CN 220041215 U CN220041215 U CN 220041215U CN 202320351922 U CN202320351922 U CN 202320351922U CN 220041215 U CN220041215 U CN 220041215U
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- sensing cable
- temperature sensing
- bottom plate
- constant temperature
- terminal box
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000004088 simulation Methods 0.000 claims abstract description 18
- 210000004899 c-terminal region Anatomy 0.000 claims abstract 2
- 230000007547 defect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Abstract
The utility model discloses a simulation alarm detection device for a differential constant temperature type temperature sensing cable, which comprises a terminal box connected with the differential constant temperature type temperature sensing cable, wherein the terminal box is provided with A, B, COMM, C four terminals, and further comprises an insulating bottom plate, a test resistor and two copper core pins, wherein through holes are formed in the insulating bottom plate at intervals, two ends of the test resistor are arranged at the interval through holes of the insulating bottom plate, and one ends of the two copper core pins are respectively welded at two ends of the test resistor, and the other ends of the two copper core pins are connected with a COMM terminal and a C terminal of the terminal box. The device overcomes the defects of the traditional differential constant temperature type temperature sensing cable simulation detection alarm detection, can rapidly carry out fire alarm simulation test under the condition of not damaging the temperature sensing cable, and achieves the purpose of nondestructive rapid and accurate simulation detection of the fire alarm linkage function.
Description
Technical Field
The utility model relates to the technical field of fire alarm system detection, in particular to a simulation alarm detection device for a differential constant temperature type temperature sensing cable.
Background
The differential temperature-sensing cable has the characteristics of high sensitivity, strong mechanical damage resistance, corrosion resistance, wear resistance and the like, so that the differential temperature-sensing cable is widely applied to fire detection in cable interlayers, cable tunnels, transformers and other places and is in contact laying. The fire disaster detection in the cable area adopts a differential constant temperature type temperature sensing cable, and the differential constant temperature type temperature sensing cable which is most widely applied to the market at present is four-core, and is widely applied to places such as cable interlayers, cable tunnels and the like in the steel industry.
The differential temperature-setting type temperature-sensing cable consists of four steel core conductors which are respectively connected with four wiring ends A, B, COMM, C of the terminal box, wherein the steel core at the end A and the steel core at the end B are differential temperature wires, and an NTC thermosensitive insulating layer is coated outside the differential temperature-setting type temperature-sensing cable to realize a differential temperature alarming function; the COMM end steel core is a public end, the outer surface of the COMM end steel core is coated with a semiconductor layer, the C end steel core is a constant temperature wire, and the outer surface of the COMM end steel core is coated with an NTC thermosensitive insulating layer, so that a constant temperature alarm function is realized. The terminal box is provided with four resistors which interact with the signal processing device at the initial end, so that the four-core differential constant temperature type temperature sensing cable is in a normal fire detection monitoring state. When the rising rate of the ambient temperature per minute reaches a set threshold value or reaches a threshold temperature, an alarm signal is sent out, and the starting end box transmits the signal to the fire alarm control panel. The method is used for testing the environment temperature in low, no power interface and fire forbidden areas by setting alarm temperature test by water, fire or hot air gun with certain temperature in original annual detection and completion acceptance detection, and consumes a great amount of manpower and material resources.
The third party detects the service organization and can only get a section of surplus temperature sensing cable of about 1m from the place close to the terminal box to test, carries out corresponding temperature rising test and constant temperature test according to different alarm temperatures, and is influenced by environmental temperature, so that heat loss is large, and the detection process is very difficult and time-consuming.
The Chinese patent document CN113963504A discloses a portable linear temperature-sensing fire detector testing device, which needs to apply an external 220V power supply, so that a power interface is difficult to ensure in a cable interlayer and underground cable tunnel area, and the testing of the device is equivalent to the testing in a laboratory environment, the temperature influence of the field environment is not considered, and the rapid simulation testing fire alarm linkage function is difficult to be realized.
Disclosure of Invention
The utility model aims to solve the technical problem of a simulation alarm detection device for a differential constant temperature type temperature sensing cable, overcomes the defects of the traditional differential constant temperature type temperature sensing cable simulation detection alarm detection, can rapidly perform fire alarm simulation test under the condition of not damaging the temperature sensing cable, and achieves the purpose of nondestructive rapid and accurate simulation detection of a fire alarm linkage function.
In order to solve the technical problems, the analog alarm detection device for the differential constant temperature type temperature sensing cable comprises a terminal box, an insulating bottom plate, a test resistor and two copper core pins, wherein the terminal box is connected with the differential constant temperature type temperature sensing cable and is provided with A, B, COMM, C four wiring ends, the insulating bottom plate is provided with through holes at intervals, two ends of the test resistor are arranged at the interval through holes of the insulating bottom plate, and one ends of the two copper core pins are respectively welded at two ends of the test resistor, and the other ends of the two copper core pins are connected with a COMM wiring end and a C wiring end of the terminal box.
Further, the resistance value of the test resistor is less than or equal to 10MΩ.
Further, the insulating base plate is 24mm long, 10mm wide and 2mm thick.
Further, the length of the two copper core pins is 15mm, and the sectional area is 2.5mm 2 。
The utility model adopts the technical scheme that the device comprises a terminal box connected with the differential constant temperature type temperature sensing cable, wherein the terminal box is provided with A, B, COMM, C four wiring ends, the device also comprises an insulating bottom plate, a test resistor and two copper core pins, the insulating bottom plate is provided with through holes at intervals, two ends of the test resistor are arranged at the interval through holes of the insulating bottom plate, and one ends of the two copper core pins are respectively welded at two ends of the test resistor, and the other ends of the two copper core pins are connected with a COMM wiring end and a C wiring end of the terminal box. The device overcomes the defects of the traditional differential constant temperature type temperature sensing cable simulation detection alarm detection, can rapidly carry out fire alarm simulation test under the condition of not damaging the temperature sensing cable, and achieves the purpose of nondestructive rapid and accurate simulation detection of the fire alarm linkage function.
Drawings
The utility model is described in further detail below with reference to the attached drawings and embodiments:
FIG. 1 is a schematic diagram of a simulated alarm detection device for a differential constant temperature sensing cable according to the present utility model.
Detailed Description
The embodiment is shown in fig. 1, the analog alarm detection device for the differential constant temperature type temperature sensing cable comprises a terminal box 2 connected with the differential constant temperature type temperature sensing cable 1, wherein the terminal box 2 is provided with A, B, COMM, C four wiring terminals, the analog alarm detection device further comprises an insulating base plate 3, a test resistor 4 and two copper core pins 5, through holes are formed in the insulating base plate 3 at intervals, two ends of the test resistor 4 are arranged in the interval through holes of the insulating base plate 3, and one ends of the two copper core pins 5 are welded to two ends of the test resistor 4 respectively, and the other ends of the two copper core pins 5 are connected with a COMM wiring terminal and a C wiring terminal of the terminal box 2.
Preferably, the resistance value of the test resistor 4 is less than or equal to 10MΩ.
When the resistance value between the COMM end and the C end of the differential temperature-sensing cable is reduced to 5MΩ and below, namely the alarm threshold is reached, the resistance value between the COMM end and the C end in the terminal box is 10MΩ, and the device can adopt the resistance with the resistance value of 10MΩ and below to be connected in parallel so as to reach the alarm threshold. Specifically, the resistance value adopted by the device is 5.44MΩ.
Preferably, the insulating base plate 3 has a length of 24mm, a width of 10mm, and a thickness of 2mm.
Preferably, the two copper core pins 5 have a length of 15mm and a cross-sectional area of 2.5mm 2 。
When the differential constant temperature type temperature sensing cable simulation alarm detection operation is performed, selecting a section of temperature sensing cable of a corresponding bridge, determining the positions of a terminal box and a starting end box of the temperature sensing cable, opening the terminal box, determining A, B, COMM, C four terminals, and connecting copper core pins of the device to two steel cores at the COMM end and the C end of the temperature sensing cable; observing the change of the initial end box, receiving an alarm signal by the initial end box for about 2 seconds, and transmitting the signal to a fire alarm controller; and the fire alarm controller generates a series of linkage instructions according to the logic relation, confirms whether each device acts according to logic on site, resets corresponding equipment and completes simulation detection operation.
The device replaces the original destructive test, realizes quick nondestructive alarm simulation detection, saves at least 90% of consumable materials and 50% of manpower, improves 80% of efficiency, can be independently finished by one person in the detection process, does not need to increase wiring personnel, eliminates potential safety hazards, and realizes the whole process detection from a terminal to a starting end and a system. The whole detection process starts from the terminal box, passes through the whole temperature sensing cable, carries out signal processing on the terminal box, and then carries out fire alarm control, so that fire alarm signals are sent out, the whole detection effect can be achieved, and quick and accurate simulated fire alarm detection is realized.
The device is successfully applied to project engineering for up-to-standard improvement of the environment of the basic coal fine purification system in the Bao Wu Tan industry, a four-core cable type differential constant temperature detector is adopted by the cable interlayer of the project engineering and the cable under the cover plate of an electric room, the four-core cable type differential constant temperature detector is divided into two loops (equal quantity), one loop adopts a hot air gun heating test, the detection is completed after 2 hours, the two loops adopt the device for detection, all simulation tests are completed within 15 minutes, and the detection efficiency is improved by at least 87.5%.
Claims (4)
1. A simulation alarm detection device for poor constant temperature formula temperature sensing cable, including the terminal box of connecting poor constant temperature formula temperature sensing cable, the terminal box is equipped with A, B, COMM, C four wiring ends, its characterized in that: the test device comprises a terminal box, and is characterized by further comprising an insulating bottom plate, a test resistor and two copper core pins, wherein through holes are formed in the insulating bottom plate at intervals, two ends of the test resistor are arranged at the interval through holes of the insulating bottom plate, one ends of the two copper core pins are welded to two ends of the test resistor respectively, and the other ends of the two copper core pins are connected with a COMM terminal and a C terminal of the terminal box.
2. The analog alarm detection device for differential temperature sensing cable of claim 1, wherein: the resistance value of the test resistor is less than or equal to 10MΩ.
3. The analog alarm detection device for differential temperature sensing cable of claim 1, wherein: the length of the insulating bottom plate is 24mm, the width of the insulating bottom plate is 10mm, and the thickness of the insulating bottom plate is 2mm.
4. The analog alarm detection device for differential temperature sensing cable of claim 1, wherein: the length of the two copper core pins is 15mm, and the sectional area is 2.5mm 2 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320351922.1U CN220041215U (en) | 2023-03-01 | 2023-03-01 | Analog alarm detection device for differential constant temperature type temperature sensing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320351922.1U CN220041215U (en) | 2023-03-01 | 2023-03-01 | Analog alarm detection device for differential constant temperature type temperature sensing cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220041215U true CN220041215U (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320351922.1U Active CN220041215U (en) | 2023-03-01 | 2023-03-01 | Analog alarm detection device for differential constant temperature type temperature sensing cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220041215U (en) |
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2023
- 2023-03-01 CN CN202320351922.1U patent/CN220041215U/en active Active
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