CN108011681B - Temporary safety automatic linkage broadcasting system in subway construction and construction method thereof - Google Patents
Temporary safety automatic linkage broadcasting system in subway construction and construction method thereof Download PDFInfo
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- CN108011681B CN108011681B CN201710584915.5A CN201710584915A CN108011681B CN 108011681 B CN108011681 B CN 108011681B CN 201710584915 A CN201710584915 A CN 201710584915A CN 108011681 B CN108011681 B CN 108011681B
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 239000000779 smoke Substances 0.000 claims abstract description 164
- 238000009434 installation Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000013500 data storage Methods 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 238000007726 management method Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 claims description 4
- 230000001427 coherent effect Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000005191 phase separation Methods 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Alarm Systems (AREA)
- Fire Alarms (AREA)
Abstract
A temporary safe automatic linkage broadcasting system in subway construction and a construction method thereof are used for temporary linkage fire control broadcasting alarm in underground roadway construction, and the system comprises a smoke sensing loop and a broadcasting network which are connected with each other through a control console, wherein the smoke sensing point network takes independent smoke sensing alarms as smoke sensors, normally open switches of all the smoke sensing relays are connected in parallel, and two ends of each normally open switch are respectively connected to an outgoing line at one end of a direct-current stabilized power supply and an outgoing line at one end of a smoke sensing loop relay coil. According to the technical scheme, the installation arrangement is realized by extremely simple equipment configuration and fast, the automatic linkage broadcasting when power failure and the whole point linkage time and background audio broadcasting of the fire alarm are realized at extremely low cost, the multifunctional underground roadway fire protection and the safety linkage broadcasting are realized, the personnel seeking, the notification and the safety linkage alarm are conveniently realized, and the method has important significance for the fire safety popularization of the underground roadway.
Description
Technical Field
The invention relates to engineering measurement technology, in particular to a temporary safety automatic linkage broadcasting system in subway construction and a construction method.
Background
Due to large-scale subway project construction and underground mine tunnel construction, the construction safety of the underground tunnel becomes a non-negligible part. However, in the construction process, the fire-fighting broadcasting linkage system is laid in advance, so that the cost is very high, the planning, ordering and installation period is long, and therefore, fire-fighting linkage broadcasting in the construction of the underground tunnel is often ignored, so that serious potential safety hazards are brought to the construction of the underground tunnel, and the key of preventive measures of the construction of the underground tunnel is to solve the problem of how to reduce the cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a temporary safety automatic linkage broadcasting system in subway construction and a construction method thereof, which can greatly reduce the budget cost and expand the functions of the system on the premise of not influencing the practical performance of fire-fighting linkage broadcasting, so that the fire-fighting safety system of an underground roadway is truly popularized and applied, and the function of safety protection is achieved.
The temporary safety automatic linkage broadcasting system in subway construction is used for temporary quick installation and realizing linkage broadcasting and alarming in underground tunnel construction, and is characterized in that: comprises a smoke sensing loop and a broadcasting network which are connected with each other through a console loop; wherein,
the control console loop is provided with a power management loop and a broadcasting power amplifier host, the power management loop is provided with a direct-current stabilized power supply and an uninterruptible power supply which are all open in the alternating-current power supply and provide power for the smoke sensing loop, and the broadcasting power amplifier host is at least provided with a first short-circuit triggering broadcasting end, a second short-circuit triggering broadcasting end and a pre-stored broadcasting audio data storage module which are respectively matched with the first short-circuit triggering broadcasting end and the second short-circuit triggering broadcasting end; an alternating current power supply end pulled into an underground roadway sequentially supplies power to a broadcasting power amplifier host and a direct current stabilized voltage supply through an alternating current power supply main air switch and an uninterruptible power supply, a power failure control relay 2KA coil is connected in parallel to the input side of the uninterruptible power supply, and two end contacts of a normally closed switch of the power failure control relay 2KA are connected with a second short-circuit triggering broadcasting end of the broadcasting power amplifier host so as to realize automatic power failure linkage broadcasting of the underground roadway;
the smoke sensing circuit is used for receiving alarm signals sent by the arranged smoke sensors, the smoke sensing circuit connects a smoke sensing circuit relay 1KA coil and the smoke sensing circuit in series and then is connected to two voltage-stabilizing output ends of a direct-current voltage-stabilizing power supply, the smoke sensing circuit takes independent smoke sensing alarms as smoke sensors, the independent smoke sensing alarms are distributed to sensing points of an underground roadway, each independent smoke sensing alarm drives independent smoke sensing relays KA respectively, KA normally open switches of each smoke sensing relay KA are connected in parallel or in parallel in groups, and two ends of each group of KA normally open switches are connected to an outgoing line at one end of the direct-current voltage-stabilizing power supply and an outgoing line at one end of the smoke sensing circuit relay 1KA coil respectively;
one normally open switch controlled by the smoke sensing loop relay 1KA coil is a 1KA broadcast alarm normally open switch, and two ends of the 1KA broadcast alarm normally open switch are respectively connected to two ends of a first short-circuit triggering broadcasting end of a broadcasting power amplifier host to realize automatic fire-fighting linkage broadcast alarm;
an auxiliary switch controlled by a smoke sensing loop relay 1KA coil is a 1KA shunt tripping switch, and the 1KA shunt tripping switch is a remote control shunt tripping switch configured by an alternating current power supply general air switch and is used for realizing fire control cut-off;
the broadcasting network arranged in the roadway is provided with a plurality of speakers which are respectively arranged at different roadway playing points, the speakers are mutually connected in series and parallel through audio lines, and after being combined, the speakers connected in series form a two-port broadcasting network, and the equivalent input impedance of the broadcasting network is equivalent to the rated output impedance of the broadcasting power amplifier host.
Preferably, when KA normally open switches are grouped in parallel, KA normally open switches in the group are connected in series;
a smoke sensing loop flash alarm is connected with the smoke sensing loop relay 1KA wire package in parallel, and the smoke sensing loop flash alarm is provided with a light alarm device;
the smoke sensing circuit relay coil packages are respectively arranged in the smoke sensing circuits of different areas, the smoke sensing circuit relay coil packages of each area are respectively connected with the smoke sensing circuits of the corresponding areas in series and then are connected to the two voltage stabilizing output ends of the direct current voltage stabilizing power supply, the alternating current power supply main switches of each area are connected in parallel, and the smoke sensing circuit relay switches of the corresponding areas are respectively controlled by shunt tripping, so that fire fighting cutting of the different areas is realized.
Preferably, the speakers arranged at the playing points in the roadway are arranged in groups, a pair of broadcast audio lines are led out from the speaker output end of the broadcast power amplifier host computer and are arranged through the speaker groups, the speakers of each speaker group are connected through a single grouping audio line, and the external connection points of the speakers at the two ends of each speaker group are respectively connected with the pair of broadcast audio lines nearby.
Preferably, the device is provided with a background broadcast signal storage module and a fire-fighting broadcast signal storage module, the output end of the broadcast power amplifier host is connected with a broadcast network through an input/output module with a double-pole double-throw switch interface, two normally closed ends of the double-pole double-throw switch interface are connected with the output end of the background broadcast signal storage module, two normally open ends of the double-pole double-throw switch interface are connected with the output end of the fire-fighting broadcast signal storage module, two central ends of the double-pole double-throw switch interface are connected with a pair of input ends of the broadcast network so as to realize the playing of the background broadcast signal in a default state, and the fire-fighting alarm state is switched to the playing of the fire-fighting broadcast signal.
Preferably, the broadcast power amplifier host is provided with a third short-circuit triggering broadcast end and a pre-stored broadcast audio data storage module which is matched with the third short-circuit triggering broadcast end, the third short-circuit triggering broadcast end is connected with two ends of a pair of normally open contacts of the time relay, and the pre-stored broadcast audio data storage module which is matched with the third short-circuit triggering broadcast end pre-stores time broadcasting music.
The installation method of the temporary safety automatic linkage broadcasting system in subway construction is characterized by comprising the following steps of: planning the position of a control console in a roadway, and synchronously or respectively installing a smoke sensing loop, a broadcasting network and the control console loop;
when the smoke sensor loop is installed, firstly, setting the installation positions of the smoke sensors, sequentially routing the smoke sensor loop signal lines of 2 cores through the setting positions of the smoke sensors in a near-to-far principle from a console, or dividing the smoke sensor loop signal lines of 2 cores in parallel branches from the console, and sequentially routing the smoke sensor loop signal lines of each area through the setting positions of the smoke sensors in a near-to-far principle until the smoke sensor loop signal lines of 2 cores are furthest at the installation positions of the smoke sensors; each independent smoke alarm to be installed is respectively provided with a battery and a fire alarm relay 1KA; secondly, the independent smoke alarm devices are fixedly arranged at the set positions one by one, and after each independent smoke alarm device is fixedly arranged, a pair of normally open switches of a fire alarm relay 1KA arranged on the independent smoke alarm devices are respectively connected with two wires of a smoke loop signal wire nearby;
when a broadcasting network is installed, firstly, setting the installation positions of all speakers, and wiring the audio line of a broadcasting loop from a console to the furthest speaker installation position through all speaker installation positions in sequence on the principle of approaching and separating from each other; or starting from a control console and dividing the control console by broadcasting areas, respectively arranging the audio lines of the broadcasting loop, and sequentially arranging wires of the set positions of the speakers in each area according to the principle of approaching and then separating until the furthest speaker is arranged;
each loudspeaker is fixedly arranged at a set position one by one, a serial loudspeaker group is formed nearby according to a serial-parallel combination plan, the serial loudspeaker groups are sequentially connected in series in a single audio line sequence, and connection points at two ends of the serial loudspeaker group are respectively connected with two wires of a broadcasting loop audio line nearby by phase ends;
when a control console loop is installed, a broadcasting power amplifier host and an uninterruptible power supply are placed at a control console position in a planned roadway, an alternating current power supply line is led in from the ground, an alternating current power supply end, an alternating current power supply main air switch, a power failure control relay 2KA and a direct current stabilized power supply are fixedly arranged, the alternating current power supply main air switch, the uninterruptible power supply and the power supply end of the broadcasting power amplifier host are sequentially connected from the alternating current power supply end, the output end of the uninterruptible power supply is also connected to the input end of the direct current stabilized power supply, the power failure control relay 2KA wire package is connected in parallel on a line between the alternating current power supply main air switch and the uninterruptible power supply, the first short circuit triggering broadcast end and the second short circuit triggering broadcast end of the broadcasting power amplifier host are respectively connected with two ends of a fire alarm relay 1KA normally open switch and two ends of a power failure control relay 2KA normally closed switch, a corresponding broadcasting audio data storage module is installed at a corresponding audio input interface of the broadcasting power amplifier host, one end of the smoke sensing loop relay 1KA wire package is connected with one 24-volt direct current output common end of the direct current stabilized power supply, the other end of the smoke sensing loop is connected with one end of a smoke sensing loop signal wire of a2 core, and the other end of the smoke sensing loop is connected with the other end of the same voltage stabilizing power source 24-stabilizing signal wire.
Preferably, the alternating current power supply main air switch is a remote shunt tripping switch, and the tripping device is an auxiliary normally open switch contact of the fire alarm relay 1KA;
if the fire alarm sub-areas are arranged, the main air switches of the alternating current power supplies in all the areas are connected in parallel, the main air switches of the alternating current power supplies are remote shunt tripping switches, and the tripping devices are auxiliary normally open switch contacts of the fire alarm relays in all the corresponding areas respectively.
Preferably, for the consecutive tunnel, the installation positions of the speakers are set in a mode of uniformly arranging at intervals of 10-18 meters and are installed on the ceiling in the tunnel, the sensitivity level of the speakers is 88-93 dB, the rated power is 3-10W, and a 10 k-50 k ohm termination resistor is connected between two terminal ends of the audio line of the broadcasting loop; for a coherent underground roadway, the installation interval of the independent smoke alarm is 20 meters.
Preferably, the broadcast output end of the broadcast power amplifier host is connected with the broadcast network through the broadcast input/output module, the partition broadcast switch of the broadcast power amplifier host is used as a short-circuit triggering broadcast end, the control line access end of the broadcast input/output module is connected with the short-circuit triggering broadcast end, the two normally closed ends of the broadcast input/output module are connected with the output end of the background broadcast signal storage module, the two normally open ends of the broadcast input/output module interface are connected with the output end of the fire-fighting broadcast signal storage module, the two central ends of the broadcast input/output module interface are connected with a pair of input ends of the broadcast network, so as to realize that the background broadcast signal is played in a default state, and the fire-fighting alarm state is switched to the fire-fighting broadcast signal playing state.
Preferably, a pair of third short-circuit triggering broadcast ends of the broadcast power amplifier host are respectively connected with a pair of normally open switches of the time relay, and a pre-stored broadcast audio data storage module is arranged at the corresponding audio signal input end.
Although the functions realized in the technical scheme are realized in the prior art, the installation arrangement is realized by extremely simple equipment configuration and quick speed, the automatic linkage broadcasting of fire protection alarm, the automatic linkage broadcasting of power failure and the automatic linkage broadcasting of whole point and the background audio broadcasting are realized by the cost of one percent of the existing FAS system, the automatic linkage broadcasting of words to voice can be realized by configuring the words to voice equipment, the multifunctional underground roadway fire protection and safety linkage broadcasting are realized, the personnel seeking, the notification and the safety linkage alarm are convenient to realize, and the method has important significance for the fire protection popularization of the underground roadway.
The invention utilizes the cheap and practical independent smoke alarm, can be freely installed at the position of a required detection point, is self-charged, is suitable for a temporary fire-fighting broadcasting system, and is convenient and quick to place and install and low in cost. When the smoke sensing loop is formed, only the 2-core signal wire is required to be pulled along the laid smoke sensing position route, and an incoming wire power supply and an outgoing wire are provided for the smoke sensing loop relay; and the common broadcasting power amplifier is skillfully utilized to realize linkage broadcasting of the underground roadway.
The relay is creatively utilized on the power supply line as a power-off sensor to trigger power-off linkage broadcast, the normally closed switch of the power-off control relay is used as a control end for triggering linkage broadcast by negative thinking, and the functions completed by the prior huge system are realized by the simplest and lowest cost.
The linkage switch of the broadcast input/output module is utilized to directly trigger the sensing signal to switch different playing sound sources, and the automatic linkage playing of the broadcast is realized by using the simplest wiring and cost.
The loudspeaker can be laid in advance, the broadcast alarm network can be laid in place only by pulling the audio signal wire of the broadcast network, the control console only needs a simple direct-current stabilized power supply and a broadcast power amplifier host, the overall cost is only about one percent of that of a fire-fighting broadcast linkage FAS alarm system, the wiring is quick and convenient, the cost of fire-fighting automatic linkage alarm is greatly reduced, and the effect of fire-fighting automatic linkage alarm can be achieved. The method has the advantages of clearing the obstacle of high cost for implementing the fire safety of the underground tunnel and having very great significance.
Drawings
Figure 1 is a schematic diagram of the circuit structure of the present invention,
figure 2 is a schematic diagram of the circuit connection of the input-output module,
fig. 3 is a schematic diagram of a split smoke sensing circuit connection.
In the figure: the intelligent smoke alarm comprises a 1-independent smoke alarm, a 2-smoke relay KA, a 3-KA normally open switch, a 4-smoke loop flashing alarm, a 5-smoke loop relay 1KA wire package, a 6-alternating current power end, a 7-alternating current power general on, an 8-power failure control relay 2KA wire package, a 9-ground receiver, a 10-broadcasting power amplifier host, an 11-uninterruptible power supply, a 12-prestored broadcasting audio data storage module, a 13-loudspeaker, a 14-underground receiver, a 15-fire alarm relay 1KA normally open switch, a 16-power failure control relay 2KA normally closed switch, a 17-time relay, a 18-direct current stabilized voltage power supply, a 19-loudspeaker set interconnection, a 20-broadcasting network, a 21-broadcasting loop audio wire, a 22-1 KA shunt excitation switch, a 23-first short circuit triggering broadcasting end, a 24-third short circuit triggering broadcasting end, a 25-second short circuit triggering broadcasting end, a 26-smoke loop, a 27-smoke loop signal wire, a 28-termination resistor and a 29-smoke loop relay wire package.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings: the temporary safety automatic linkage broadcasting system in subway construction as shown in fig. 1 is used for temporarily and quickly installing and realizing a multipurpose broadcasting linkage and alarm system for fire-fighting linkage alarm, power failure automatic linkage alarm, background music broadcasting, whole-point automatic time reporting, ground and underground voice station broadcasting, text automatic reading and the like in underground roadway construction, and is characterized by particularly low cost, quick and effective installation construction and easy popularization and use, and the set of efficient and low-cost system disclosed by the invention does not see the precedent of use and disclosure.
The temporary safety automatic linkage broadcasting system in the subway construction of fig. 1 includes a smoke sensing circuit 26 and a broadcasting network 20 connected to each other through a console circuit.
The control console loop is provided with a power management loop and a broadcasting power amplifier host 10, the power management loop provides power for the system, gives an automatic alarm for power failure and switches power supply, and the power management loop is provided with an alternating current power supply main air switch 7, a direct current stabilized power supply 18 and an uninterruptible power supply 11. The alternating current power supply end 6 drawn into the underground roadway sequentially supplies power to the broadcasting power amplifier host 10 and the direct current stabilized power supply 18 through the alternating current power supply main air switch 7 and the uninterruptible power supply 11. When the external alternating current power supply fails, the power supply is automatically switched to the uninterruptible power supply 11, and the uninterruptible power supply 11 is at least provided with reserved power for 1 hour.
The broadcasting power amplifier host 10 is provided with at least a first short circuit triggering broadcasting end 23, a second short circuit triggering broadcasting end 25 and a prestored broadcasting audio data storage module 12 which are respectively matched with the first short circuit triggering broadcasting end and the second short circuit triggering broadcasting end; in this embodiment, a third short-circuit triggering broadcast end 24 and a pre-stored broadcast audio data storage module 12 configured in a matched manner are further provided. In the technical scheme, the two ends of the partition control switch are used as short-circuit triggering broadcasting ends to be short-circuited and then can automatically trigger the corresponding storage modules to broadcast.
The input side of the uninterruptible power supply 11 is connected with a power failure control relay 2KA coil 8 in parallel, two end contacts of a normally closed switch 16 of the power failure control relay 2KA are connected with a second short circuit triggering broadcasting end 25 of the broadcasting power amplifier host 10, the normally closed switch 16 of the power failure control relay 2KA is converted into a short circuit closing state from an open state during power failure, meanwhile, the uninterruptible power supply 11 supplies power to the broadcasting power amplifier host 10, and the broadcasting power amplifier host 10 starts a corresponding pre-stored voice module to play a power failure notice, so that automatic power failure linkage broadcasting of an underground roadway is skillfully realized with a very simple structure and cost.
The smoke sensing circuit 26 is used for receiving alarm signals sent by the arranged smoke sensors and realizing automatic fire alarm broadcasting by using the broadcasting power amplifier host 10.
As shown in fig. 1, the smoke sensing circuit is configured to connect the smoke sensing circuit relay 1KA coil 5 and the smoke sensing circuit 26 in series and then connect the smoke sensing circuit relay 1KA coil 5 and the smoke sensing circuit 26 to two voltage stabilizing output ends of the dc voltage stabilizing power supply 18, the smoke sensing circuit 26 uses the independent smoke sensing alarm 1 as a smoke sensor, the independent smoke sensing alarms 1 are distributed to sensing points of an underground roadway, each independent smoke sensing alarm 1 drives an independent smoke sensing relay KA2, KA normally open switches 3 of each smoke sensing relay KA2 are connected in parallel, and two ends of the KA normally open switches 3 are connected to an outgoing line at one end of the dc voltage stabilizing power supply 18 and an outgoing line at one end of the smoke sensing circuit relay 1KA coil 5. In the connection method in fig. 1, two independent smoke alarm devices 1 and KA normally open switches 3 are used as a group, the arrangement distance of the two independent smoke alarm devices 1 in the group is not far, after the KA normally open switches 3 carried by the two independent smoke alarm devices 1 in the group are connected in series, the two independent smoke alarm devices are connected with other KA normally open switch groups in parallel, as shown in fig. 1, at the moment, the two KA normally open switches 3 in the group are closed for alarming to touch the smoke loop relay 1KA coil 5 for power supply, and the fault redundancy and reliability of fire alarm are improved.
And a smoke sensing loop flash alarm 4 is connected with the smoke sensing loop relay 1KA coil 5 in parallel, and the smoke sensing loop flash alarm 4 is provided with a light alarm device. The flash alarm 4 is installed on the control desk, so that the fire alarm signal can be visually seen from the control desk.
One normally open switch controlled by the smoke sensing loop relay 1KA coil 5 is a 1KA broadcast alarm normally open switch 15,1KA, and two ends of the broadcast alarm normally open switch 15 are respectively connected to two ends of the first short circuit triggering broadcast end 23 of the broadcast power amplifier host 10, so as to realize automatic linkage broadcast alarm of fire control. When the independent smoke alarm 1 of a group is triggered, the KA normally open switch connected with the independent smoke alarm is closed, the smoke loop relay 1KA coil 5 is powered on, the fire alarm relay 1KA normally open switch is closed, the first short circuit triggering broadcasting end 23 of the broadcasting power amplifier host 10 is triggered, the broadcasting power amplifier host 10 automatically plays corresponding stored voice content, and the loudspeaker of the broadcasting network plays linkage broadcasting.
One auxiliary switch controlled by the smoke sensing loop relay 1KA coil 5 is a 1KA shunt tripping switch 22,1KA shunt tripping switch 22 which is a remote control shunt tripping switch configured by an alternating current power supply total air switch 7 or an air switch group and is used for realizing fire fighting cutting.
If the alternating current power supply main air switch 7 is arranged as a parallel air switch group for being in charge of different areas, the smoke alarm in the different areas can be used for controlling tripping, so that fire fighting cutting in the different areas is realized. As shown in fig. 3, smoke sensing circuit relay packages 29 are respectively arranged in the smoke sensing circuits of different areas, the smoke sensing circuit relay packages 29 of each area are respectively connected with the smoke sensing circuits of the corresponding areas in series and then are connected to two voltage stabilizing output ends of the direct current voltage stabilizing power supply 18, the alternating current power supply main switches of each area are connected in parallel, and the smoke sensing circuit relay switches of the corresponding areas are respectively controlled by shunt tripping, so that fire fighting cutting of different areas is realized. The smoke sensing loop relay coil 29 of each area is connected with a smoke sensing loop flash alarm 4 in parallel, and the smoke sensing loop flash alarm 4 is provided with a lamplight alarm device. The flashing alarm 4 of each area loop is arranged on the control desk, so that the fire alarm signals of each area can be visually seen from the control desk.
The broadcasting network 20 arranged in the roadway is provided with a plurality of speakers 13 respectively installed at different roadway playing points, the speakers 13 are mutually connected in series and parallel through audio lines, and after being connected in parallel by the speaker groups connected in series, the broadcasting network 20 forms a two-port broadcasting network, and the equivalent input impedance of the broadcasting network 20 is equivalent to the rated output impedance of the broadcasting power amplifier host 10.
The speakers 13 arranged at the playing points in the roadway are arranged in groups, a pair of broadcast audio lines 11 are led out from the speaker output end of the broadcast power amplification host 10 and are arranged through the speaker groups, the speakers of each speaker group are connected through a single grouping audio line 12, the speakers in the group are connected in series, and the external connection points of the speakers at the two ends of each speaker group are respectively connected with the pair of broadcast audio lines 11 in parallel nearby.
The device is provided with a background broadcast signal storage module and a fire-fighting broadcast signal storage module, broadcast voice content pre-stored in the background broadcast signal storage module can be played in a default state, and the pre-stored content of the fire-fighting broadcast signal storage module is played after the fire-fighting alarm trigger switch is closed. The output end of the broadcasting power amplifier host 10 is connected with the broadcasting network 20 through an input/output module with a double-pole double-throw switch interface, as shown in fig. 2, two normally closed ends of the double-pole double-throw switch interface of the input/output module are connected with the output end of the background broadcasting signal storage module, two normally open ends of the double-pole double-throw switch interface are connected with the output end of the fire-fighting broadcasting signal storage module, two central ends of the double-pole double-throw switch interface are connected with a pair of input ends of the broadcasting network 20 to realize the playing of the background broadcasting signal in a default state, and the fire-fighting alarm state is switched to the playing of the fire-fighting broadcasting signal. The input/output module of the embodiment in fig. 2 adopts an HJ-1825 input/output module, and the HJ-1825 input/output module is an input/output module manufactured by the electronic company of the songjiang, the Shanghai, which is relatively widely used.
In the optimized scheme, the broadcast power amplifier host 10 is provided with a third short-circuit triggering broadcast end 24 and a pre-stored broadcast audio data storage module 12 which is arranged in a matched mode, the third short-circuit triggering broadcast end 24 is connected with two ends of a pair of normally open contacts of the time relay 17, and the pre-stored broadcast audio data storage module 12 which is arranged in the matched mode of the third short-circuit triggering broadcast end 24 pre-stores time telling music so as to realize time telling.
According to the installation method of the temporary safety automatic linkage broadcasting system in subway construction, the fire protection and power failure automatic linkage broadcasting in the underground tunnel can be realized by means of the simplified equipment in a rapid arrangement mode.
The installation and layout method comprises the steps of planning the position of a control console in a roadway and synchronously or respectively installing a smoke sensing loop 26, a broadcasting network 20 and the control console loop;
when the smoke sensor circuit 26 is installed, firstly, setting the installation position of the smoke sensor, and when the fire alarm area is an integral area, wiring the smoke sensor circuit signal line 27 with 2 cores from the control desk to the furthest smoke sensor installation position through the setting positions of the smoke sensors in sequence on the principle of approaching and then separating; when the fire alarm area is divided into a plurality of spaced areas, the alarm area is divided from the control console, the 2-core smoke sensing loop signal lines 27 are branched and distributed in parallel, and each area is sequentially routed through the smoke sensing sensor setting positions on a near-to-far basis until the furthest smoke sensing sensor mounting position. Each independent smoke alarm 1 to be installed is respectively provided with a battery and a fire alarm relay 1KA, and when the independent smoke alarm is triggered, a pair of trigger points of the independent smoke alarm are provided with voltages, so that the fire alarm relay can be driven.
Next, the individual smoke alarm devices are fixedly installed at the set positions one by one, and after each individual smoke alarm device is fixedly installed, a pair of normally open switches of the fire alarm relay 1KA installed on the individual smoke alarm devices are respectively connected with two wires of the smoke loop signal wire 27 nearby.
When the broadcast network 20 is installed, first, the installation positions of the speakers are set, and if the broadcast area is divided into one area, the broadcast loop audio line 21 is routed from the console through the speaker installation positions in order of near-far basis until the speaker installation position is the farthest.
If the broadcasting area is divided into a plurality of different areas, the different areas can respectively play different broadcasting sounds, and then the broadcasting area can be divided from the console, the broadcasting loop audio lines 21 can be respectively distributed, each area sequentially passes through the setting position wiring of each loudspeaker on the principle of near and far, and the broadcasting network of each area is respectively output by one partition power amplification port of the broadcasting power amplification host 10 until the furthest loudspeaker mounting position.
Next, each speaker 13 is fixedly installed at a set position one by one, and is usually installed at the top of a roadway in a ceiling manner, and a serial speaker group is formed nearby according to a serial-parallel combination plan, and the serial speaker groups are sequentially connected in series in a single audio line sequence, as shown in fig. 1, and connection points at two ends of the serial speaker group are respectively connected nearby with two lines of the audio line 21 of the broadcasting loop by phase ends.
When a control console loop is installed, a broadcasting power amplification host 10 and an uninterruptible power supply 11 are placed at a control console position in a planned roadway, an alternating current power supply line is led in from the ground, a distribution board is arranged, an alternating current power supply end 6, an alternating current power supply main air switch 7 and a power failure control relay 2KA are fixedly arranged on the distribution board, a direct current stabilized power supply 18 is further arranged, the alternating current power supply main air switch 7, the uninterruptible power supply 11 and the power supply end of the broadcasting power amplification host 10 are sequentially connected from the alternating current power supply end 6, the output end of the uninterruptible power supply 11 is further connected to the input end of the direct current stabilized power supply 18, a power failure control relay 2KA wire packet 8 is connected in parallel on a line between the alternating current power supply main air switch 7 and the uninterruptible power supply 11, a first short circuit triggering broadcast end 23 and a second short circuit triggering broadcast end 25 of the broadcasting power amplification host 10 are respectively connected with two wiring ends of a normally open switch 15 of a fire alarm relay 1KA and two wiring ends of a normally closed switch 16 of the power failure control relay 2KA, and the second short circuit triggering broadcast end 25, namely a corresponding partition switch is normally in a corresponding state when no power is in a state, and is in a normally closed state when power is in a state. The corresponding pre-stored broadcast audio data storage module 12 is installed at the corresponding audio input interface of the broadcast power amplification host 10, one end of the smoke sensing loop relay 1KA coil 5 is connected with one 24-volt direct current output public end of the direct current stabilized power supply 18, the other end of the smoke sensing loop relay is connected with one of the smoke sensing loop signal lines 27 of the 2 cores, and the other one of the smoke sensing loop signal lines 27 of the 2 cores is connected to the other output end of the same 24-volt direct current end of the direct current stabilized power supply 18.
The alternating current power supply main air switch 7 is a remote shunt tripping switch, and the tripping device is an auxiliary normally open switch contact of the fire alarm relay 1 KA. When the fire alarm relay is triggered, the tripping device is started, the alternating current power supply main air switch 7 is automatically tripped and broken, and the non-fire-fighting power supply is automatically cut off when the fire alarm is realized.
When the fire alarm area is divided into a plurality of spaced areas, the alternating current power supply main air switches of all the subareas are connected in parallel, when the fire alarm relay of one subarea is triggered, the corresponding opening device is started, the corresponding alternating current power supply air switch is automatically tripped and opened, and the non-fire-fighting power supply is automatically cut off when the fire alarm is realized.
In a regular roadway, the installation positions of the speakers are uniformly arranged at intervals of 10-18 meters and are installed on a ceiling in the roadway, the sensitivity level of the speakers is 88-93 dB, the rated power is 3-10W, and a 10 k-50 k ohm termination resistor is connected between two terminal ends of a broadcast loop audio line 21.
For regular underground roadways, the installation interval of the independent smoke alarm can be set to be 20 meters. And for the independent smoke alarm arranged in the subareas, the installation positions are independently arranged in each subarea.
The broadcast output end of the broadcast power amplifier host 10 is connected with a broadcast network through a broadcast input/output module, as shown in fig. 2, the broadcast input/output module is adopted as an HJ-1825 input/output module, the HJ-1825 input/output module is an input/output module produced by the Shanghai songjiang fei electronic limited company, which is widely applied, a control line access end of the HJ-1825 input/output module is connected with a short-circuit triggering broadcast end, two normally closed ends of the HJ-1825 input/output module are connected with output ends of a background broadcast signal storage module, two normally open ends of an interface of the HJ-1825 input/output module are connected with output ends of a fire-fighting broadcast signal storage module, and two central ends of the interface of the HJ-1825 input/output module are connected with a pair of input ends of the broadcast network 20 so as to realize that a background broadcast signal is played in a default state, and a fire-fighting alarm state is switched to play a fire-fighting broadcast signal.
More preferably, a broadcast power amplifier host provided with a third short-circuit triggering broadcast end 24 and corresponding broadcast power amplifier host 10 and background broadcast signal storage module is used. A pair of third short-circuit triggering broadcast ends 24 of the broadcast power amplifier host are respectively connected with a pair of normally open switches of the time relay 17, and a corresponding audio signal input end is provided with a pre-stored broadcast audio data storage module 12 to realize full-point automatic music time.
Although the functions realized in the technical scheme are realized in the prior art, the installation arrangement is realized by extremely simple equipment configuration and quick speed, the automatic linkage broadcasting of fire protection alarm, the automatic linkage broadcasting of power failure and the automatic linkage broadcasting of whole point and the background audio broadcasting are realized by the cost of one percent of the existing FAS system, the automatic linkage broadcasting of words to voice can be realized by configuring the words to voice equipment, the multifunctional underground roadway fire protection and safety linkage broadcasting are realized, the personnel seeking, the notification and the safety linkage alarm are convenient to realize, and the method has important significance for the fire protection popularization of the underground roadway.
Claims (6)
1. The utility model provides a temporary safety automatic linkage broadcasting system in subway construction for install and realize linkage broadcasting and warning in the underground roadway construction temporarily fast, its characterized in that: comprises a smoke sensing circuit (26) and a broadcasting network (20) which are connected with each other through a console circuit; wherein,
the control console loop is provided with a power management loop and a broadcasting power amplifier host (10), the power management loop is provided with an alternating current power supply main air switch (7), a direct current stabilized voltage power supply (18) and an uninterruptible power supply (11) which provide electric energy for the smoke sensing loop, and the broadcasting power amplifier host (10) is at least provided with a first short circuit triggering broadcasting end (23), a second short circuit triggering broadcasting end (25) and a pre-stored broadcasting audio data storage module (12) which are respectively matched with the first short circuit triggering broadcasting end and the second short circuit triggering broadcasting end; an alternating current power supply end (6) in the underground roadway is powered for a broadcasting power amplifier host (10) and a direct current stabilized power supply (18) sequentially through an alternating current power supply main air switch (7) and an uninterruptible power supply (11), a power failure control relay 2KA coil (8) is connected to the input side of the uninterruptible power supply (11) in parallel, and two end contacts of a normally closed switch (16) of the power failure control relay 2KA are connected with a second short circuit triggering broadcasting end (25) of the broadcasting power amplifier host (10) so as to realize automatic power failure linkage broadcasting of the underground roadway;
the smoke sensing circuit (26) is used for receiving alarm signals sent by the distributed smoke sensors, the smoke sensing circuit connects the smoke sensing circuit relay 1KA coil (5) and the smoke sensing circuit (26) in series and then is connected to two voltage stabilizing output ends of the direct-current voltage stabilizing power supply (18), the smoke sensing circuit (26) takes independent smoke sensing alarms (1) as smoke sensors, the independent smoke sensing alarms (1) are distributed to sensing points of an underground roadway, each independent smoke sensing alarm (1) respectively drives an independent smoke sensing relay KA (2), KA normally open switches (3) of each smoke sensing relay KA (2) are connected in parallel or in parallel in a grouping mode, and two ends of each KA normally open switch are respectively connected to an outgoing line at one end of the direct-current voltage stabilizing power supply (18) and an outgoing line at one end of the smoke sensing circuit relay 1KA coil (5);
one normally open switch controlled by the smoke sensing loop relay 1KA coil (5) is a 1KA broadcast alarm normally open switch (15), and two ends of the 1KA broadcast alarm normally open switch (15) are respectively connected to two ends of a first short-circuit triggering broadcasting end (23) of the broadcasting power amplifier host (10) so as to realize automatic linkage broadcasting alarm of fire control;
an auxiliary switch controlled by the smoke sensing loop relay 1KA coil (5) is a 1KA shunt tripping switch (22), and the 1KA shunt tripping switch (22) is a remote control shunt tripping switch configured by an alternating current power supply main air switch (7) and is used for realizing fire control cutting;
the broadcasting network (20) arranged in the roadway is provided with a plurality of speakers (13) which are respectively arranged at different roadway playing points, the speakers (13) are mutually connected in series and parallel through audio lines, and after being connected in parallel by each series speaker group, a two-port broadcasting network is formed, and the equivalent input impedance of the broadcasting network (20) is equivalent to the rated output impedance of the broadcasting power amplifier host (10);
when the KA normally open switches (3) are connected in parallel in groups, the KA normally open switches (3) in the groups are connected in series;
a smoke sensing loop flash alarm (4) is connected in parallel with the smoke sensing loop relay 1KA coil (5), and the smoke sensing loop flash alarm (4) is provided with a light alarm device;
the smoke sensing circuit relay coil assemblies of the different areas are respectively arranged, the smoke sensing circuit relay coil assemblies of the different areas are respectively connected with the smoke sensing circuit of the corresponding area in series and then are connected to the two voltage-stabilizing output ends of the direct-current voltage-stabilizing power supply (18), the alternating-current power supply main switches of the different areas are connected in parallel, and the smoke sensing circuit relay switches of the corresponding areas are respectively controlled by shunt tripping, so that fire fighting cutting of the different areas is realized;
the speakers (13) arranged at each playing point in the roadway are arranged in groups, a pair of broadcast audio lines (11) are led out from the speaker output end of the broadcast power amplification host (10) and are arranged through each speaker group, the speakers of each speaker group are connected through a single grouping audio line (12), and the external connection points of the speakers at the two ends of each speaker group are respectively connected with the pair of broadcast audio lines (11) nearby.
2. The broadcast system of claim 1, wherein: the intelligent fire-fighting broadcasting system is provided with a background broadcasting signal storage module and a fire-fighting broadcasting signal storage module, wherein the output end of a broadcasting power amplifier host (10) is connected with a broadcasting network (20) through an input/output module with a double-pole double-throw switch interface, two normally-closed ends of the double-pole double-throw switch interface are connected with the output end of the background broadcasting signal storage module, two normally-open ends of the double-pole double-throw switch interface are connected with the output end of the fire-fighting broadcasting signal storage module, two central ends of the double-pole double-throw switch interface are connected with a pair of input ends of the broadcasting network (20) to realize that the background broadcasting signal is played in a default state, and the fire-fighting alarming state is switched to the fire-fighting broadcasting signal playing state.
3. The broadcast system of claim 1, wherein: the broadcasting power amplifier host (10) is provided with a third short-circuit triggering broadcasting end (24) and a pre-stored broadcasting audio data storage module (12) which is arranged in a matched mode, the third short-circuit triggering broadcasting end (24) is connected with two ends of a pair of normally open contacts of the time relay (17), and the pre-stored broadcasting audio data storage module (12) which is arranged in the matched mode of the third short-circuit triggering broadcasting end (24) pre-stores time music.
4. A method for installing a temporary safety automatic linkage broadcasting system in subway construction according to any one of claims 1 to 3, which is characterized in that: planning the position of a control console in a roadway, and synchronously or respectively installing a smoke sensing loop (26), a broadcasting network (20) and the control console loop;
when the smoke sensor circuit (26) is installed, firstly, setting the installation position of the smoke sensor, sequentially arranging the smoke sensor circuit signal lines (27) of 2 cores through the installation positions of the smoke sensor according to the principle of approaching and distressing from a control console, or dividing the smoke sensor circuit signal lines (27) of 2 cores in parallel according to the alarm area from the control console, and sequentially arranging the smoke sensor circuit signal lines (27) of 2 cores through the installation positions of the smoke sensor according to the principle of approaching and distressing from the control console until the smoke sensor is furthest installed; each independent smoke alarm (1) to be installed is respectively provided with a battery and a fire alarm relay 1KA;
secondly, the independent smoke alarm devices are fixedly arranged at the set positions one by one, and after each independent smoke alarm device is fixedly arranged, a pair of normally open switches of a fire alarm relay 1KA arranged on the independent smoke alarm devices are respectively connected with two wires of a smoke loop signal wire (27) nearby;
when the broadcasting network (20) is installed, firstly, setting the installation positions of the speakers, and wiring the broadcasting loop audio line (21) from the console to the farthest speaker installation position through the speaker installation positions in sequence according to the principle of approaching and separating from the console; or starting from a control console and dividing the control console by broadcasting areas, respectively arranging the audio lines (21) of the broadcasting loop, and sequentially arranging the audio lines at the set positions of the speakers by the principle that each area is close before the other area is far, until the audio lines are arranged at the furthest speaker mounting position;
each loudspeaker (13) is fixedly arranged at a set position one by one, a serial loudspeaker group is formed nearby according to a serial-parallel combination plan, the serial loudspeaker groups are sequentially connected in series in a single audio line sequence, and connection points at two ends of the serial loudspeaker group are respectively connected with two wires of a broadcasting loop audio line (21) nearby in a phase separation mode;
when a control desk loop is installed, a broadcasting power amplification host (10) and an uninterruptible power supply (11) are placed at a control desk position in a planned roadway, an alternating current power supply line is led in from the ground, an alternating current power supply end (6), an alternating current power supply main air switch (7), a power failure control relay 2KA and a direct current stabilized power supply (18) are fixedly arranged, the alternating current power supply main air switch (7), the uninterruptible power supply (11) and the power supply end of the broadcasting power amplification host (10) are sequentially connected, the output end of the uninterruptible power supply (11) is also connected to the input end of a direct current stabilized power supply (18), a power failure control relay 2KA wire packet (8) is connected in parallel on a line between the alternating current power supply main air switch (7) and the uninterruptible power supply (11), a first short circuit triggering broadcast end (23) and a second short circuit triggering broadcast end (25) of the broadcasting power amplification host (10) are respectively connected with two power failure control relay 2KA normally-closed switches (16) of a fire alarm relay 1KA switch (15), a corresponding to a direct current smoke-sensing end of a direct current cable (2) is connected with a smoke-sensing end of a direct current stabilized power supply module (27) of a corresponding audio frequency input interface module (10) of the broadcasting power amplification host (10), one end of the direct current stabilized power supply module (2) is connected with a smoke-sensing circuit (27), the other one of the smoke sensing loop signal lines (27) of the 2 cores is connected to the other output end of the same 24V direct current end of the direct current stabilized power supply (18);
the alternating current power supply main air switch (7) is a remote shunt tripping switch, and the tripping device is an auxiliary normally open switch contact of the fire alarm relay 1KA;
if the fire alarm sub-areas are arranged, the main air switches of the alternating current power supplies of all the areas are connected in parallel, the main air switches of all the alternating current power supplies are remote shunt tripping switches, and the tripping devices are auxiliary normally open switch contacts of the fire alarm relays of all the corresponding areas respectively;
for a coherent roadway, the installation positions of the loudspeakers are uniformly arranged at intervals of 10-18 meters and are arranged on a ceiling in the roadway, the sensitivity level of the loudspeakers is 88-93 dB, the rated power is 3-10W, and a 10 k-50 k ohm termination resistor is connected between two terminal ends of a broadcasting loop audio line (21); for a coherent underground roadway, the installation interval of the independent smoke alarm is 20 meters.
5. The mounting method according to claim 4, wherein: the broadcasting output end of the broadcasting power amplifier host (10) is connected with a broadcasting network through a broadcasting input and output module, a partition broadcasting switch of the broadcasting power amplifier host (10) is used as a short-circuit triggering broadcasting end, a control line access end of the broadcasting input and output module is connected with the short-circuit triggering broadcasting end, two normally closed ends of the broadcasting input and output module are connected with the output end of a background broadcasting signal storage module, two normally open ends of a broadcasting input and output module interface are connected with the output end of a fire-fighting broadcasting signal storage module, two central ends of the broadcasting input and output module interface are connected with a pair of input ends of a broadcasting network (20) to realize that a background broadcasting signal is played in a default state, and a fire-fighting alarm state is switched to a fire-fighting broadcasting signal.
6. The mounting method according to claim 4, wherein: a pair of third short-circuit triggering broadcast ends (24) of the broadcast power amplification host (10) are respectively connected with a pair of normally open switches of the time relay (17), and a pre-stored broadcast audio data storage module (12) is installed at a corresponding audio signal input end.
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