CN215576866U - Automatic fire alarm system with secondary distribution function - Google Patents
Automatic fire alarm system with secondary distribution function Download PDFInfo
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- CN215576866U CN215576866U CN202121176419.4U CN202121176419U CN215576866U CN 215576866 U CN215576866 U CN 215576866U CN 202121176419 U CN202121176419 U CN 202121176419U CN 215576866 U CN215576866 U CN 215576866U
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Abstract
The utility model relates to the technical field of automatic fire alarm, in particular to an automatic fire alarm system with a secondary distribution function, which comprises an automatic fire alarm controller, a bus, a branch box and a plurality of fire detectors, wherein one end of the bus is connected with the automatic fire alarm controller, the other end of the bus enters the inner side of the branch box, the bus is secondarily distributed into a plurality of branch lines in the branch box, and the fire detectors correspond to the branch lines one to one. The utility model has reasonable and compact structure and convenient use, and the buses are secondarily distributed in the branch boxes by arranging the branch boxes, and each fire detector and the secondarily distributed buses are connected in parallel, thereby avoiding that each fire detector is connected in parallel on the buses, when one of the fire detector buses is disconnected, all the parallel fire detectors behind the corresponding fault fire detector can be in a power-off state and can not normally work, and the environmental state of a fire-fighting subarea can not be fed back in real time, thus easily causing great fire-fighting hidden danger.
Description
Technical Field
The utility model relates to the technical field of automatic fire alarm, in particular to an automatic fire alarm system with a secondary distribution function.
Background
At present, the known automatic fire alarm system adopts a bus system, all fire detectors (equipment) are connected in parallel on a bus (as shown in figure 3), all detection signals are in serial communication with a controller, each fire detector (equipment) has an independent address code, when one fire detector gives an alarm, a host of the automatic fire alarm system can receive the alarm signal of the fire detector, a fire fighter can know the fire alarm position through alarm information to check and actualize the fire detector, and find out whether the fire detector has a fault or actually has a fire hazard, when more than two fire detectors give an alarm, the corresponding linkage fire fighting equipment can enter a linkage state, and the good operation state of the fire detectors directly determines the stable and effective operation of the automatic fire alarm system.
In actual construction, the alarm system adopts a bus system, the construction wiring mode of the fire detector (equipment) is parallel connection, and all parallel connection positions are on a wiring terminal of the fire detector, so that the construction is facilitated, a line intermediate interface is avoided, and the alarm system is generally applied to installation of fire alarm equipment. However, in the existing parallel connection mode, when the fire detector is damaged by external force collision, the wiring terminal is loosened, the fire-fighting partition has a building problem and the like, and a bus is disconnected, all the fire detectors (equipment) connected in parallel behind a fault point are in a power-off failure working state, a fire alarm function cannot be realized while a host reports faults, the environmental state of the fire-fighting partition cannot be fed back in real time, and great fire-fighting hidden dangers are caused.
Disclosure of Invention
The utility model provides an automatic fire alarm system with a secondary distribution function, which overcomes the defects of the prior art and can effectively solve the problem that when a bus is disconnected, all fire detectors (equipment) connected in parallel behind a fault point cannot work normally in a parallel connection mode adopted between the existing fire detectors and the bus, so that a fire alarm function cannot be realized while a host reports faults.
The technical scheme of the utility model is realized by the following measures: the automatic fire alarm system with secondary distribution function includes automatic fire alarm controller, bus, distributing box and several fire detectors.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the bus can comprise a first core wire and a second core wire, the junction box comprises a junction unit, the first core wire is connected with an incoming line terminal of the junction unit, the second core wire is connected with the remaining incoming line terminal of the junction unit, the first core wire and the second core wire are secondarily distributed through the junction unit, fire detectors are connected between an outgoing line terminal corresponding to the incoming line terminal connected with the first core wire and an outgoing line terminal corresponding to the incoming line terminal connected with the second core wire of the junction unit, and the outgoing line terminal of the junction unit connected with each fire detector is not repeated.
The branching unit can comprise a first terminal row, a second terminal row and a third terminal row, wherein the inlet terminals of the second terminal row are in short circuit connection, the first core wire is connected with the inlet terminals of the second terminal row, and the outlet terminals of the second terminal row are connected with the inlet terminals of the first terminal row; the inlet terminal of the third terminal row is in short circuit, the second core wire is connected with the inlet terminal of the third terminal row, and the outlet terminal of the third terminal row is connected with the rest inlet terminals of the first terminal row; and a terminal resistor and a plurality of fire detectors are connected between the outlet terminal corresponding to the inlet terminal connected with the second terminal row and the outlet terminal corresponding to the inlet terminal connected with the third terminal row on the first terminal row, and the outlet terminals of the first terminal row connected with the terminal resistor and the fire detectors are not repeated.
The utility model has reasonable and compact structure and convenient use, and the distribution box is arranged to carry out secondary distribution on the bus in the distribution box, and each fire detector and the secondarily distributed bus are connected in parallel, thereby avoiding that each fire detector is connected in parallel on the bus, when one fire detector is in bus open circuit due to external force collision damage, wiring terminal loosening and building problems of fire control subareas, all the parallel fire detectors behind the corresponding fault fire detector can not work normally in a power-off state, and serious fire-fighting hidden danger is caused.
Drawings
Fig. 1 is a schematic circuit diagram according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an internal circuit structure of the distribution box in fig. 1.
Fig. 3 is a schematic circuit diagram of a conventional fire detector in the background art.
The codes in the figures are respectively: the automatic fire alarm controller comprises a fire automatic alarm controller 1, a terminal resistor 2, a junction box 3, a fire detector 4, a first terminal row 5, a second terminal row 6, a third terminal row 7, a first core wire 8 and a second core wire 9.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
The utility model is further described with reference to the following examples and figures:
as shown in fig. 1, the automatic fire alarm system with secondary distribution function includes an automatic fire alarm controller 1, a bus, a distribution box 3 and a plurality of fire detectors 4, one end of the bus is connected with the automatic fire alarm controller 1, the other end of the bus enters the inner side of the distribution box 3, the bus is secondarily distributed into a plurality of distribution lines in the distribution box 3, the fire detectors 4 are in one-to-one correspondence with the distribution lines, and each fire detector 4 is connected with the corresponding distribution line.
The automatic fire alarm controller 1 is a known technology, and is used for receiving a fire signal and starting a fire alarm device; the branch boxes 3 are respectively arranged in each fire-fighting subarea and are connected in parallel; all the fire detectors 4 are numbered and positioned in the branch box 3, and are connected with the bus in a branching manner, so that the corresponding lines of the fire detectors 4 can be conveniently searched and maintained;
when in use, the bus is secondarily distributed into a plurality of branch lines in the branch box 3, the fire detectors 4 are in one-to-one correspondence with the branch lines, and each fire detector 4 is connected with the corresponding branch line, so that no parallel connection port exists between the bus and the branch box 3, the fault points are reduced, and each fire detector 4 is independently connected with the corresponding branch line, so as to avoid that each fire detector 4 is connected on the bus in parallel, when one of the fire detectors 4 is damaged due to external force collision, the wiring terminal is loosened, and a building problem occurs in a fire-fighting subarea to cause bus open circuit, all the parallel fire detectors 4 behind the corresponding fault fire detector 4 can be in a power-off state and can not work normally, and the automatic fire alarm controller 1 can not realize the fire alarm function when reporting faults, therefore, the environmental state of the fire-fighting subarea cannot be fed back in real time, and the problem of serious fire-fighting hidden danger is easily caused.
To sum up, when one of the fire detectors 4 breaks down or the circuit is out of order, the automatic fire alarm controller 1 can only alarm the fire detector 4 of the fault point, the fault alarm condition can not be carried out on all the fire detectors 4 after the fault point, the fault point can be quickly locked, the maintenance is convenient, and in the daily maintenance, the fire detectors 4 which need to be maintained are only needed to be maintained, replaced and tested, and the normal operation of the whole automatic fire alarm system is not influenced.
The automatic fire alarm system with the secondary distribution function can be further optimized or/and improved according to actual needs:
as shown in fig. 1 and 2, the bus includes a first core wire 8 and a second core wire 9, the distribution box 3 includes a distribution unit, the first core wire 8 is connected to an inlet terminal of the distribution unit, the second core wire 9 is connected to the remaining inlet terminals of the distribution unit, the first core wire 8 and the second core wire 9 are secondarily distributed by the distribution unit, the fire detectors 4 are connected between an outlet terminal corresponding to the inlet terminal connected to the first core wire 8 and an outlet terminal corresponding to the inlet terminal connected to the second core wire 9 on the distribution unit, and the outlet terminals of the distribution unit connected to each fire detector 4 are not duplicated.
The inlet wire terminal that above-mentioned separated time unit and first heart yearn 8 are connected corresponds a plurality of outlet terminal, the inlet wire terminal that separated time unit and second heart yearn 9 are connected corresponds a plurality of outlet terminal, make first heart yearn 8 and second heart yearn 9 carry out the secondary distribution, so a plurality of fire detector 4 of parallelly connected on separated time unit of outlet terminal of accessible difference, and each fire detector 4 separately installs, avoid each fire detector 4 all to connect in parallel on first heart yearn 8 and second heart yearn 9, be convenient for real-time feedback fire control subregion's environmental condition, prevent to cause great fire control hidden danger.
Above-mentioned through setting up two heart yearns of first heart yearn 8 and second heart yearn 9, the threading is convenient when being under construction, and difficult circuit alternately and the wrong connection of appearing is convenient for maintain and investigate.
As shown in fig. 1 and 2, the branching unit includes a first terminal row 5, a second terminal row 6 and a third terminal row 7, the incoming terminals of the second terminal row 6 are short-circuited, a first core wire 8 is connected to the incoming terminals of the second terminal row 6, and the outgoing terminals of the second terminal row 6 are connected to the incoming terminals of the first terminal row 5; the inlet terminal of the third terminal row 7 is in short circuit, the second core wire 9 is connected with the inlet terminal of the third terminal row 7, and the outlet terminal of the third terminal row 7 is connected with the rest inlet terminals of the first terminal row 5; and a terminal resistor 2 and a plurality of fire detectors 4 are connected between an outlet terminal corresponding to the inlet terminal connected with the second terminal row 6 and an outlet terminal corresponding to the inlet terminal connected with the third terminal row 7 on the first terminal row 5, and the outlet terminals of the first terminal row 5 connected with the terminal resistor 2 and the fire detectors 4 are not repeated.
The terminal resistor 2 is used for stabilizing a loop signal, wherein the terminal resistor 2 can also be a conventional known bus short-circuit protector, and when a line is connected, the terminal resistor 2 can be arranged on the inner side of the junction box 3, so that the terminal resistor 2 is conveniently and normatively installed, and potential safety hazards caused by random installation during construction are prevented; the shorting of the inlet terminals of the second terminal row 6 and the inlet terminals of the third terminal row 7 may also be performed by using a known terminal shorting tab, so that the first core wire 8 is connected to the inlet terminal of the second terminal row 6 after shorting, and the second core wire 9 is connected to the inlet terminal of the third terminal row 7 after shorting.
During the use, connect the both ends of a plurality of fire detector 4 respectively on first terminal row 5 with the outlet terminal that the inlet wire terminal that second terminal row 6 is connected corresponds between the outlet terminal that the inlet wire terminal that is connected with third terminal row 7 corresponds on first terminal row 5, the outlet terminal of first terminal row 5 that a plurality of fire detector 4 are connected is not repeated, make each fire detector 4 separately install, when one of them fire detector 4 break circuit trouble or circuit problem, automatic fire alarm controller 1 can report to the police to the fire detector 4 of fault point, be convenient for real-time feedback fire control subregion's environmental condition, prevent to cause great fire control hidden danger.
The technical characteristics form an embodiment of the utility model, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (3)
1. The automatic fire alarm system with secondary distribution function includes automatic fire alarm controller, bus, distributing box and several fire detectors.
2. The automatic fire alarm system having a secondary distribution function according to claim 1, wherein the bus may include a first core and a second core, the distribution box includes a distribution unit, the first core is connected to an inlet terminal of the distribution unit, the second core is connected to the remaining inlet terminals of the distribution unit, the first core and the second core are secondarily distributed through the distribution unit, fire detectors are connected between an outlet terminal of the distribution unit corresponding to the inlet terminal connected to the first core and an outlet terminal corresponding to the inlet terminal connected to the second core, and the outlet terminal of the distribution unit connected to each fire detector is not repeated.
3. The automatic fire alarm system having a secondary distribution function according to claim 2, wherein the branching unit includes a first terminal row, a second terminal row and a third terminal row, the inlet terminals of the second terminal row are short-circuited, the first core wire is connected to the inlet terminals of the second terminal row, and the outlet terminals of the second terminal row are connected to the inlet terminals of the first terminal row; the inlet terminal of the third terminal row is in short circuit, the second core wire is connected with the inlet terminal of the third terminal row, and the outlet terminal of the third terminal row is connected with the rest inlet terminals of the first terminal row; and a terminal resistor and a plurality of fire detectors are connected between the outlet terminal corresponding to the inlet terminal connected with the second terminal row and the outlet terminal corresponding to the inlet terminal connected with the third terminal row on the first terminal row, and the outlet terminals of the first terminal row connected with the terminal resistor and the fire detectors are not repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121176419.4U CN215576866U (en) | 2021-05-28 | 2021-05-28 | Automatic fire alarm system with secondary distribution function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121176419.4U CN215576866U (en) | 2021-05-28 | 2021-05-28 | Automatic fire alarm system with secondary distribution function |
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| CN215576866U true CN215576866U (en) | 2022-01-18 |
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| CN202121176419.4U Active CN215576866U (en) | 2021-05-28 | 2021-05-28 | Automatic fire alarm system with secondary distribution function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116863634A (en) * | 2023-09-04 | 2023-10-10 | 山东广瑞电力科技有限公司 | Fire monitoring and early warning method and system |
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2021
- 2021-05-28 CN CN202121176419.4U patent/CN215576866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116863634A (en) * | 2023-09-04 | 2023-10-10 | 山东广瑞电力科技有限公司 | Fire monitoring and early warning method and system |
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