CN105332735B - Prevent the method and system of colliery livewire work and gas explosion - Google Patents
Prevent the method and system of colliery livewire work and gas explosion Download PDFInfo
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- CN105332735B CN105332735B CN201410391907.5A CN201410391907A CN105332735B CN 105332735 B CN105332735 B CN 105332735B CN 201410391907 A CN201410391907 A CN 201410391907A CN 105332735 B CN105332735 B CN 105332735B
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Abstract
The invention discloses a kind of method and system for preventing colliery livewire work and gas explosion, methods described includes：Surveillance center utilizes the leak(age) test device near supply line's end load switch of electric power system, and earth leakage protective reliability is examined from a distant place；During Surveillance center is powered according to the normal outcome control electric power system of distant place inspection earth leakage protective reliability; Surveillance center utilizes the protection device being separately mounted on each charging equipment; each charging equipment is controlled by electric power system, to avoid charging equipment from causing electric shock accidents or its electric spark to trigger gas explosion；Wherein protection device is one below or combination：Latch-up protection device on the blocking device of switchgear；Cover plate opening-closing state sensor on the cover plate of wire connection cavity；Locking device on wiring mouth；Gas exceeding limit on the wire connection cavity cover plate or operating cavity door closure of charging equipment is uncapped blocking device.
Description
Technical field
The present invention relates to technical field of mine safety, more particularly to a kind of side for preventing colliery livewire work and gas explosion
Method and system.
Background technology
The situation of electric burning things which may cause a fire disaster actuation gas within coal mines is most, and about 48.1% ".In colliery actuation gas accident or
The main reason for electric shock accidents is the livewire work of coal mine equipment.
Existing blocking device is mainly shown as：Screwdriver single-handedly can just move deadlock lever and without authorization power transmission or without authorization
Uncap operation；Common door lock in punch lock on deadlock lever, this method can not long-term use of switches in the dynamic use of underground
On, reason is：How many switch must have the key of several times number of switches, and door lock easily gets rusty, it is difficult to and use and manage,
In addition, the switch of no deadlock lever can not common door lock in punch lock；Install some mechanisms on blocking device additional, only use three point arbitrage
The specific purpose tools such as pipe could operate deadlock lever movement, and this method can not long-term use of switch in the dynamic use of underground
On, reason is：A kind of corresponding instrument of one kind switch, a unit have ten kinds of switches, worker's just palpus ten kinds of instruments of band, in practice not
Just management uses；Big lid common wrench or sleeve pipe on high-voltage switch gear with disconnecting switch interlocking can just be opened, and this structure is not
It can prevent that the non-full-time personnel with general tool from uncapping operation without authorization.We have collected 50 to relevant accident case, death
4501 people.
Existing wire connection cavity is mainly shown as：Without interlocking protection device, electrical apparatus interstar connection chamber lid plate are consolidated with plain bolt
It is fixed, do not lock, with the just powered operation of uncapping of energy of the common tools such as spanner, card silk pincers, pipe wrench, produce electric spark actuation gas.
Existing cable entry is mainly shown as：Screw-type loudspeaker nozzle, it can single-handedly unscrew and cause electrically " to lose quick-fried ",
GB3836.1 appendix A requirements are not met.We have collected 52 to accident about " losing quick-fried " initiation, dead 1283 people.
On the other hand, worker's narrow particular surroundings dark in underground works, and is more easy to break rules and regulations compared to ground handling operator
Livewire work, such as：Blocking device power transmission without authorization, or the opening big lid operation of switch chamber without authorization violating the regulations are operated, or is broken rules and regulations without authorization
Electrical apparatus interstar connection chamber lid plate livewire work, or loudspeaker nozzle of loosening without authorization violating the regulations, etc. are opened, so as to trigger electrical safety thing
Therefore.
In addition, prior art also uncap and blocking device and have electricity not open lid (door) device by no gas exceeding limit, in gas
Worker's (door) livewire work violating the regulations of uncapping frequently when transfiniting and having electricity.
In addition, prior art does not have special distance leakage testing device, distance leakage testing can not be carried out, it is difficult to test
Earth leakage protective reliability and sensitivity, earth leakage protective are often in " failure " state.There is no the special powered work in prevention colliery
Industry and the integrated system of gas explosion.
The content of the invention
It is an object of the invention to provide a kind of method and system for preventing colliery livewire work and gas explosion, by coal
Corresponding protection device is installed in each charging equipment of ore deposit, the alarm signal of real-time collecting these protection devices detection, controls coal
Power supply of the electric power system of ore deposit to each charging equipment, so as to realize the preventing and treating of colliery livewire work and gas explosion.
The method of prevention colliery livewire work and the gas explosion of the present invention comprises the following steps：
Surveillance center utilizes the leak(age) test device near supply line's end load switch of electric power system, from
Examine earth leakage protective reliability in a distant place；
Surveillance center examines the result of earth leakage protective reliability to be controlled electric power system according to a distant place, to prevent from leaking electricity
Electric power system continues to power after shielding failure；
Examine what the normal outcome control electric power system of earth leakage protective reliability was powered according to a distant place in Surveillance center
Period, Surveillance center each powered set using being separately mounted to protection device on each charging equipment, by electric power system to described
It is standby to be controlled, to avoid charging equipment from causing electric shock accidents or its electric spark to trigger gas explosion；
Wherein, when the charging equipment for switchgear with blocking device when, the protection device is installed in opening
Close the latch-up protection device on the blocking device of equipment；
Wherein, when the charging equipment is the equipment with wire connection cavity, the protection device is installed in the wiring
Cover plate opening-closing state sensor on the cover plate of chamber；
Wherein, when the charging equipment is the equipment with wiring mouth, the protection device is installed in the wiring mouth
On locking device；
Wherein, the protection device is the gas exceeding limit on the wire connection cavity cover plate or operating cavity door closure of charging equipment
Or establish lid blocking device by cable.
Preferably, described latch-up protection device includes：Down lock body；Upper lock body on down lock body, with down lock body
Between formed and be used for disposing the accommodation space of object to be locked；It is used for locking the one-level lock of the object to be locked on down lock body
Core；On down lock body and connect the detection means of Surveillance center connection.
Preferably, the Surveillance center is controlled using the latch-up protection device and by electric power system switching devices
System, including：Surveillance center receives the status signal for the latch-up protection device that the latch-up protection device is sent；Surveillance center according to
The status signal, determines whether latch-up protection device locks；If it is determined that latch-up protection device does not lock, then Surveillance center controls
Electric power system cut-out is powered to the switchgear；If it is determined that latch-up protection device has locked, then Surveillance center is protected according to locking
Protection unit is operated or shown to being powered to the switchgear on demand in the unlocking signal then sent, control electric power system
Blocking device is normal.
Preferably, described cover plate opening-closing state sensor includes：Locking bolt cover；It is bolted locking bolt cover
Electrical equipment cover plate；The key and lock core being arranged in the locking side opening of bolt cover one；It is arranged on the upper hole of locking bolt cover
Interior locking screws；The action sensor for the band action rodmeter being arranged in the upper hole of locking bolt cover；Wherein, it is described
Action sensor is connected with Surveillance center, and the lower end of action sensor bar is crimped with bolt head on bolt, and distance is cased with bolt
Set, distance is put to be connected provided with annular fore shaft, annular fore shaft with lock core.
Preferably, the Surveillance center utilizes the cover plate opening-closing state sensor and by electric power system to described powered
Equipment is controlled, including：Surveillance center receives the unblock letter that the cover plate opening-closing state sensor is sent when cover plate is opened
Number；Surveillance center powers according to the unlocking signal received, control electric power system cut-out to the charging equipment；Surveillance center with
After receive that the cover plate opening-closing state sensor sends in cover plate closing afterwards shuts signal, control electric power system is to the band
Electric equipment is powered.
Preferably, the locking device includes：Upper lock body, down lock body, lock core and key, and upper lock body is arranged on under
Sensor that is between lock body and connecting the Surveillance center；Described upper and lower lock body is shaped as semicircle body, upper and lower
The upper protruding ring and lower convexity ring for preventing lock body from being released from loudspeaker nozzle are respectively equipped with lock body；Described upper lock body is provided with for locking
Core, the passage of key disengaging, the screw coordinated with lock core is provided with down lock body.
Preferably, the Surveillance center is entered using the locking device and by the electric power system to the charging equipment
Row control, including：The wiring that the locking device is sent to the Surveillance center is received to have a loose tongue dynamic signal；According to the wiring mouth
Signal is loosened, shows or control the electric power system to be powered on demand to the charging equipment.
Preferably, described gas exceeding limit or establish by cable lid blocking device include lock housing, lock object, loaded in lock housing
Motor drive mechanism, signal processing module and the monitoring probe in lock housing；Described motor drive mechanism is provided with flexible motor drive mechanism
Locking head, motor drive mechanism are connected with signal processing module, and signal processing module is connected with monitoring probe and the Surveillance center.
Preferably, the Surveillance center using the gas exceeding limit or establishes lid blocking device by cable the charging equipment is entered
Row control, including：Surveillance center receives the gas exceeding limit or establishes lid blocking device by cable when detecting that gas density transfinites
The gas exceeding limit signal of transmission；Gas exceeding limit signal described in Surveillance center, control electric power system cut-out is to the charging equipment
Power supply.
Preferably, the protection device and the wired or wireless connection of the Surveillance center；Each charging equipment with it is described
Electric power system is connected by supply lines；And Surveillance center is by controlling the switch of the electric power system, realizes and powered set to each
Standby real power supply control.The cover plate of wire connection cavity or the door closure of operating cavity to open electrical equipment, being proposed to Surveillance center please
Ask, Surveillance center is to gas exceeding limit or establishes lid blocking device by cable and sends signal, its electromagnetic mechanism action unblock, after being authorized
It can just unlock.
The system of a kind of livewire work of prevention colliery and the gas explosion of the present invention includes：
Leak(age) test device near supply line's end load switch of electric power system, for being examined from a distant place
Earth leakage protective reliability；
The multiple protection devices being separately mounted on each charging equipment；
With the protection device and the Surveillance center of the wired or wireless connection of leak(age) test device, for being examined according to a distant place
The result of earth leakage protective reliability is controlled to electric power system, and electric power system continues to power after being failed to prevent leak-stopping electric protection,
And control is powered to each charging equipment according to the alarm signal from the protection device；
Each charging equipment and the Coal Mine Power Distribution System for the control signal for receiving the Surveillance center are connected via supply lines；
Wherein, the charging equipment is the switchgear with blocking device, and the protection device is to be set installed in switch
Latch-up protection device on standby blocking device；
Wherein, the charging equipment is the equipment with wire connection cavity, and the protection device is installed in the wire connection cavity
Cover plate opening-closing state sensor on cover plate；
Wherein, the charging equipment is the equipment with wiring mouth, and the protection device is on the wiring mouth
Locking device；
Wherein, the protection device is the gas exceeding limit on the wire connection cavity cover plate or operating cavity door closure of charging equipment
Or establish lid blocking device by cable.
Preferentially the Surveillance center includes：Connect the communication that each protection device is used to receive the alarm signal of its transmission
Interface；The controller or processor of the communication interface are connected, the alarm signal of the protection device for handling communication interface reception
Number, and corresponding control signal is sent to electric power system according to result, to control electric power system to be set to powered accordingly
Standby homework of supplying power；Leak(age) test button, leak(age) test signal is sent for starting controller, the signal is sent out via communication interface
Give the leak(age) test device near supply line's end load switch of electric power system；And the control is connected respectively
Input unit, display device and the memory of device processed.
Preferably, the leak(age) test device includes：It is any that its one end is connected to the on-load switch mains side triple line
The test for ground resistance of phase line；The switch execution unit being connected between the test for ground resistance other end and ground wire；Connection monitoring
The control unit for controlling switch execution unit make-break operation at center；Control unit and test for ground resistance are connected to coal
Switch protection part on ore deposit power line.
Relative to prior art, the method have the benefit that, the various charging equipments in colliery can be carried out real
When monitor, so as to avoid charging equipment from causing electric shock accidents or its electric spark to trigger gas explosion.
The present invention is described in detail below in conjunction with the accompanying drawings, so as to which the above-mentioned purpose and effect of the present invention is expressly understood
Fruit.
Brief description of the drawings
Fig. 1 is the system schematic that the present invention is used for realizing the method for prevention colliery livewire work and gas explosion；
Fig. 2 is the schematic diagram of Surveillance center's structure in Fig. 1；
Fig. 3 is the schematic diagram for the latch-up protection device that the present invention uses；
Fig. 4 is the schematic diagram for the above-mentioned cover plate opening-closing state sensor that the present invention uses；
Fig. 5 is the schematic diagram for the locking device that the present invention uses；
Fig. 6 is the gas exceeding limit or have the schematic diagram for establishing lid blocking device by cable that the present invention uses；
Fig. 7 is the block diagram for the leak(age) test device that the present invention uses；
Fig. 8 is a physical circuit figure of the leak(age) test device shown in Fig. 7；
Fig. 9 is one embodiment that the present invention is used for realizing the system of the method for prevention colliery livewire work and gas explosion
Schematic diagram；
Figure 10 is another reality that the present invention is used for realizing the system of the method for prevention colliery livewire work and gas explosion
Apply the schematic diagram of example.
Embodiment
The system that Fig. 1 shows the method for realizing prevention colliery livewire work and the gas explosion of the present invention,
Referring to Fig. 1, the method for prevention colliery livewire work of the invention and gas explosion, comprise the following steps：
Surveillance center utilizes the leak(age) test device near supply line's end load switch of electric power system, from
Examine earth leakage protective reliability in a distant place；
Surveillance center examines the result of earth leakage protective reliability to be controlled electric power system according to a distant place, to prevent from leaking electricity
Electric power system continues to power after shielding failure；
Examine what the normal outcome control electric power system of earth leakage protective reliability was powered according to a distant place in Surveillance center
Period, Surveillance center each powered set using being separately mounted to protection device on each charging equipment, by electric power system to described
It is standby to be controlled, to avoid charging equipment from causing electric shock accidents or its electric spark to trigger gas explosion；
Wherein, when the charging equipment for switchgear with blocking device when, the protection device is installed in opening
Close the latch-up protection device on the blocking device of equipment；
Wherein, when the charging equipment is the equipment with wire connection cavity, the protection device is installed in the wiring
Cover plate opening-closing state sensor on the cover plate of chamber；
Wherein, when the charging equipment is the equipment with wiring mouth, the protection device is installed in the wiring mouth
On locking device；
Wherein, the protection device is the gas exceeding limit on the wire connection cavity cover plate or operating cavity door closure of charging equipment
Or establish lid blocking device by cable.
Fig. 2 shows the structure of the Surveillance center of the present invention, including：Each protection device is connected to be used to receive its transmission
The communication interface of alarm signal；The controller or processor of the communication interface are connected, for handling the guarantor of communication interface reception
The alarm signal of protection unit, and corresponding control signal is sent to electric power system according to result, to control electric power system
To the homework of supplying power of corresponding charging equipment；Leak(age) test button, leak(age) test signal is sent for starting controller, the signal
The leak(age) test device near supply line's end load switch of electric power system is sent to via communication interface；And
Input unit, display device and the memory of the controller are connected respectively.
Fig. 3 shows the structure for the latch-up protection device that the present invention uses, as shown in figure 3, including：Down lock body 803；Installation
Upper lock body 801 on down lock body 803, the accommodation space for being used for disposing object 804 to be locked is formed between down lock body 803；Peace
It is used for locking the one-level lock core 807 of the object 804 to be locked on down lock body 803；On down lock body 803 and connect institute
State the detection means of the connection of Surveillance center 100；It is used for preventing one-level lock core 807 to be unlocked at least on down lock body 803
One two level lock core 810；And screw 809.
The first lock core placement hole 803b, the first lock core placement hole 803b and the accommodation space are provided with down lock body 803
Connection, the one-level lock core 807 are placed in the first lock core placement hole 803b.
Detection means includes：Switch 808 on the first lock core placement hole 803b inwalls；Under described
The signal processor 806 being connected on lock body 803 with switch 808, is electrically connected with the warning system 805.
As shown in figure 1, the Surveillance center of the present invention is entered using the protection device and by electric power system to charging equipment
Row is monitored and controlled, and is specifically included：Surveillance center receives the state letter for the latch-up protection device that the latch-up protection device is sent
Number；Surveillance center determines whether latch-up protection device locks according to the status signal；If it is determined that latch-up protection device is unlocked
Good, then Surveillance center's alarm indication or control electric power system cut-out is powered to the switchgear；If it is determined that latch-up protection device
It has been locked that, then Surveillance center is according to latch-up protection device in the signal then sent, and control electric power system is on demand to the switch
Equipment is powered operation.
Fig. 4 shows the structure for the above-mentioned cover plate opening-closing state sensor that the present invention uses, including：Locking bolt cover 822；
Bolt 826；The electrical equipment cover plate 821 of locking bolt cover 822 is connected by bolt 825；It is arranged on the locking side of bolt cover 822
Key 823 and lock core 824 in hole；The locking screws 8211 being arranged in the upper hole of locking bolt cover 822；It is arranged on locking
The action sensor 829 of band action rodmeter 828 in the upper hole of bolt cover 822；Wherein, the action sensor 829
Be connected with Surveillance center 100, the lower end of action sensor bar 828 crimps with bolt head on bolt 825, be cased with bolt 825 away from
From set 827, distance set 827 is provided with annular fore shaft, and annular fore shaft is connected with lock core 824.
Surveillance center 100 of the present invention powered is set using the cover plate opening-closing state sensor and by electric power system to described
It is standby to be controlled, including：Surveillance center receives the unlocking signal that the cover plate opening-closing state sensor is sent when cover plate is opened；
Surveillance center is according to the unlocking signal received, and the cut-out of control electric power system is to charging equipment power supply or display alarm；And
After what Surveillance center sent when being subsequently received the cover plate opening-closing state sensor in cover plate closing shuts signal, control supplies
Electric system is powered to the charging equipment.
Fig. 5 shows the structure for the locking device that the present invention uses, including：Upper lock body 832, down lock body 833, lock core 837
And key 838, and be arranged between upper lock body 832 and down lock body 833 and sensor that connect the Surveillance center 100
(not shown)；Described upper and lower lock body is shaped as semicircle body, be respectively equipped with upper and lower lock body prevent lock body from
The upper protruding ring 834 released on loudspeaker nozzle and lower convexity ring 835；Described upper lock body 832 is provided with to be entered for lock core 837, key 838
The passage gone out, the screw coordinated with lock core 837 is provided with down lock body 833.In addition, with opening on upper lock body 832 and down lock body 833
The auxiliary section for putting outlet-pipe 831 into is in broached-tooth design 839.
As shown in figure 1, the Surveillance center of the present invention utilizes the locking device and by the electric power system to the band
Electric equipment is controlled, including：The wiring that the locking device is sent to the Surveillance center is received to have a loose tongue dynamic signal；According to institute
State wiring to have a loose tongue dynamic signal, control the electric power system to be powered on demand to the charging equipment or display alarm, for example stop
Only power, then enter line delay power supply.
Fig. 6 shows the gas exceeding limit that uses of the present invention or establishes lid blocking device by cable, as shown in fig. 6, including：Lock housing
842nd, lock object 847, visited loaded on the motor drive mechanism 844 in lock housing, signal processing module 849 and the monitoring in lock housing
First 853；Installed in the interior action sensor 848 being connected with signal processing module 849 of lock housing 842 and provided with connection safety of coal mines
The interface of monitoring system 849；Described motor drive mechanism is provided with flexible motor drive mechanism locking head 843, motor drive mechanism with signal
Reason module 849 is connected, and signal processing module is connected with monitoring probe and the Surveillance center 100.Lock object is band annular
The fastening bolt set 846 and spring washer 855 of fore shaft, or mine switch locking bar protective.Lock housing is locking bolt cover 842, or
Person is not locking bolt cover, or deadlock lever cover.
When need to overhaul electrical equipment, lock core 845 is operated with special key 841, lock core 845 is exited into fore shaft, removes lock housing
(locking bolt cover) 842, can loose bolts, carry out operation of uncapping；Now action sensor detects operation of uncapping, by alarm signal
Surveillance center number is sent to, realization is cut off the electricity supply before uncapping by electric power system, realizes leading uncovering power-off.
When gas exceeding limit, monitoring 853 notification signal processing modules 849 of probe, the notice of signal processing module 849 band is manually
The motor drive mechanism 844 of reset acts, and motor mechanism locking head 843 stretches out, and realizes that gas exceeding limit is uncapped locking, while sound and light alarm
System 854 sends alarm signal or power-off signal, and staff can not be operated with key and be unlocked, and electrical equipment of also just not opening connects
Line cover plate.Monitoring probe 853 can also be feed sensor or on-off transducer, whether have electricity with detection device, at this moment just into
To establish lid blocking device by cable.
As shown in figure 1, the Surveillance center of the present invention using the gas exceeding limit or establishes lid blocking device by cable to the band
Electric equipment is controlled, including：Surveillance center, which receives the gas exceeding limit or establishes lid blocking device by cable, is detecting that gas is dense
The gas exceeding limit signal that degree is sent when transfiniting；Surveillance center is according to gas exceeding limit signal, and control electric power system cut-out is to the band
The power supply of electric equipment.
As shown in figure 1, the protection device of the present invention carries out wired or wireless connection with the Surveillance center；Each charging equipment
It is connected with the electric power system by supply lines；And Surveillance center is by controlling the switch of the electric power system (not show in figure
Show), realize the power supply control to each charging equipment.
As shown in fig. 7, leak(age) test device 860 includes：Its one end is connected to the mains side triple line of on-load switch 864
The test for ground resistance Rb of any phase line；The switch execution unit being connected between the test for ground resistance Rb other ends and ground wire
861；Connect the control unit 862 for the make-break operation of controlling switch execution unit 861 of Surveillance center 100；Control unit
862 and test for ground resistance Rb is connected to the switch protection part 863 on colliery power line 865.
As shown in figure 8, control unit 862 includes：Its primary mains side triple line of connected load switch 864 appoints the change of two-phase
Depressor B；Its input connects the rectifier ZL of B level of transformer；The processing unit DJ of Surveillance center 100 is connected, its power supply is defeated
Enter end connection rectifier ZL input, for carrying out make-break operation according to the instruction controlling switch execution unit 861 of Surveillance center,
And the power failure information of colliery power line 865 is fed to Surveillance center 100；Connect the local control manually of ZL level of rectifier
Device processed, it is made up of the first control button SA1 and relay coil J being connected in series.
Specifically, switch protection part 863 includes fuse RD and disconnecting switch GK, and transformer B primary passes through fuse
RD and disconnecting switch GK are connected on colliery power line 865.
Processing unit DJ is powered off instrument, and the cutoff instrument has：Via the controlled end of control circuit connection Surveillance center 100；
Via the feedback end of feedback line connection Surveillance center；And external power supply end, power input connection rectifier ZL's is defeated
Enter or connect substation JK power input.
Switch execution unit 861 includes：The switch contact DJ1 controlled by processing unit DJ；By local personal control control
The switch contact J1 of system.
Distance leakage testing button is pressed at monitoring system center, and distance leakage testing instruction is transmitted to processing dress by control line
DJ is put, controlling switch contact DJ1 is closed after DJ obtains instruction, and test for ground resistance Rb connects with the earth, now colliery power line
865th, earth current is produced in the loop that leak(age) test device 3 and leak detection protection device (not shown) are formed, cuts off coal
The power supply of ore deposit power line 865, the power cut-off at distalmost end on-load switch 864, the electric leakage examination of connection colliery power line 865
Experiment device 860 is in the case of power failure, it will obtains the power failure information that its input voltage or electric current are zero, processing dress
Put DJ and feed back outage information to Surveillance center 100, Surveillance center 100 determines that earth leakage protective is effective according to the feedback outage information；
If leak(age) test is unsuccessful, leak detection protection device will not cut off the power supply of colliery power line 865, so that processing unit DJ
Non- outage information is fed back to Surveillance center 100, Surveillance center 100 controls electric power system interruption of power supply according to this information, to enter
Row maintenance.
Referring to Fig. 1 to Fig. 8, present invention also offers a kind of system for preventing colliery livewire work and gas explosion, including：
The protection device being separately mounted on each charging equipment；
With the Surveillance center of the wired or wireless connection of the protection device, for according to the alarm from the protection device
Signal is powered control to each charging equipment；
Each charging equipment and the Coal Mine Power Distribution System for the control signal for receiving the Surveillance center are connected via supply lines；
Wherein, the charging equipment is the switchgear with blocking device, and the protection device is to be set installed in switch
Latch-up protection device on standby blocking device；
Wherein, the charging equipment is the equipment with wire connection cavity, and the protection device is installed in the wire connection cavity
Cover plate opening-closing state sensor on cover plate；
Wherein, the charging equipment is the equipment with wiring mouth, and the protection device is on the wiring mouth
Locking device；
Wherein, the protection device is the gas exceeding limit on the wire connection cavity cover plate or operating cavity door closure of charging equipment
Or establish lid blocking device by cable.
In conjunction with some specific embodiments, the present invention will be described, it is necessary to which explanation, illustrates only to use below below
In skilled artisan understands that the present invention, rather than for limiting the present invention, present disclosure should be defined by described above.
As shown in figure 9, antiknock equipment installation is connected in electric power system：It may include：Equipment cover plate folding condition sensor
1, referred to as：Folding sensor, such as：Uncap sensor, graded latch device, fully closed locking device etc.；Latch-up protection device 13, such as：
Alarm type two is anti-lock, open type two of swiping the card is anti-lock, wireless transmission type two is anti-lock etc.；The locking protection device 5 of loudspeaker nozzle, referred to as：It is anti-
Loose device, such as：Unlatching of swiping the card is anti-, which to uncage, wireless transmission line is anti-uncages；Distance leakage testing device 8, referred to as：Remote leakage experiment；
Gas exceeding limit (or having electricity) is uncapped blocking device etc. 9, abbreviation auxiliary member；Antiknock monitoring station 4 as above-mentioned Surveillance center 100.
The composition equipped with logical relation expression antiknock：Antiknock equipment is by folding sensor 1, and antiknock monitoring station 4, and remote
Leakage experiment 8, or latch-up protection device 13, or locking device 5, or auxiliary member 9 combine.
In Figure 10, electric power system is by power switch (or upper secondary switch), cable, cable coupling box, on-load switch (on or
One-level switchs), the composition such as motor (or load), be shown in Fig. 8 underground power supply system most basic unit, be simplified underground
Electric power system.Other equipments are all that installation is connected in electric power system.
Folding sensor：Folding sensor is arranged in equipment, its relay tip and antiknock monitoring station networking operation
Realization is uncapped interlocking.Open cover plate, it is necessary to unlocked by full-time staff with special key (or swiping the card), i.e., " prevent non-full-time people
Member uncaps operation without authorization ".The action of activating sensor contact sends signal after unblock, and antiknock monitoring is passed to by wired or wireless
Stand, higher level's power supply of the antiknock monitoring station order cutting-off controlling wire connection cavity, realized before " lose quick-fried " advanced " uncovering power-off ",
The equipment is realized " alarm of uncapping " on the spot, and is alarmed simultaneously at ground monitoring center, after uncapping, locking higher level's power switch,
Ensure that he can not be to the equipment wire connection cavity power transmission, i.e. " locking of uncapping ".
Major function is to prevent facility terminal cabinet upper cover plate by the electric spark violating the regulations for opening generation actuation gas.Secondly,
Emergency can be used for illumination or alert help, during mine lamp out of power, remove sensor of uncapping, can using its sound and light of alarm
Used as emergency lighting；Or its sound and light of alarm is utilized to other people alert helps；Or personnel are realized by network savvy
Positioning.
Latch-up protection device：On the blocking device of the equipment such as switch, or blocking device is inherently with protection dress
Put, only full-time electrician hold private key (or swiping the card) could unlock power transmission or unblock uncap, other non-full-times personnel can not
Unlock power transmission and open switching manipulation chamber door lid livewire work without authorization, and by wired or nothing before unblock power transmission or unblock are uncapped
Line is alarmed to antiknock monitoring station.
Major function is to prevent power transmission without authorization violating the regulations or the without authorization electric spark of opening door operation generation actuation gas.
Locking device：On wiring mouth, only full-time electrician hold private key (or swiping the card) could unlock, loosen,
Maintenance, other non-full-times personnel can not unlock, loosen loudspeaker nozzle, and major function is to prevent loudspeaker nozzle loosens " losing quick-fried " and produced from drawing
The electric spark of quick-fried gas, and alarmed before loosening by wired or wireless to antiknock monitoring station.
Remote leakage experiment：Installed in line end on-load switch beside, and with antiknock monitoring station networking operation, in monitoring
The heart can a distant place test earth leakage protective reliability, prevent earth leakage protective fail after electric power system continue to run with phenomenon, prevent to ignite
The electric spark of gas produces.
Auxiliary member：Including gas exceeding limit (or having electricity) blocking device etc., the equipotential on equipment wire connection cavity or operating cavity
Put, inside have gas probe and motor drive mechanism, can ensure that electrical apparatus interstar connection chamber lid plate OR gate lid is not opened after gas exceeding limit,
Or it can ensure that the wire connection cavity cover plate OR gate lid is not opened under electrical equipment electriferous state.Prevent it is powered uncap, hotline maintenance
Produce the electric spark of actuation gas.With antiknock monitoring station networking operation, and to its alarm.
Antiknock monitoring station：By chips such as single-chip microcomputer or PLC, display, printer, input and output facility, performer, remote
Leak the computer supervisory control system of the compositions such as test button, it may include ground monitoring display system, also can be by Internet of Things, power monitoring
Subelement and antiknock monitoring in the monitoring systems such as system, safety system, safety monitoring system and on-off control system
Stand.
Antiknock method：Folding sensor is tested installation with remote leakage to be connected in electric power system, and synchronously monitored with antiknock
Wire/wireless of standing connects,
When opening load wire connection cavity cover plate, first unlocked or swiped the card with specific purpose tool the folding that unblock is installed by bolt cover
Sensor, folding sensor removes signal alarm to antiknock monitoring station hair after unblock, and antiknock monitoring station receives the report for police service after signal, order
The upper level switch circuit breaking of the wire connection cavity power supply, or the contact of folding sensor is controlled directly to disconnect the control time that upper level switchs
Road, and the locking switch, ensure he can not to the equipment wire connection cavity power transmission,
If upper level switch can not power off for some reason, the upper secondary switch power-off of antiknock monitoring station order cut-out and locking,
Or, when opening cable coupling box cover plate or on-load switch junction box cover plate, first with specific purpose tool unblock or solution of swiping the card
The folding sensor that lock is installed by bolt sleeve, the power-off of its power switch of antiknock monitoring station order and locking.
Or be connected to latch-up protection device, or locking device, or auxiliary member installation in electric power system, supervised with antiknock
The wire/wireless connection of control station,
Operating cavity is turned on the power switch, first opens latch-up protection device with instrument or opening latch-up protection device of swiping the card,
Or alarmed simultaneously to antiknock monitoring station,
Or, if the switch does not power off, or the Switching Power Supply is alarmed or cut off again,
During power failure, latch-up protection device is locked, and the status signal of latch-up protection device is sent to antiknock monitoring station,
During power transmission, first pass through antiknock monitoring station and release power transmission locking to be authorized, closed with specific purpose tool or opening of swiping the card
Lock protective device, then power transmission.
Loosen loudspeaker nozzle 5, first have a power failure, then with instrument or swipe the card open locking device, and to antiknock monitoring station alarm or
Alarm on the spot, or, if do not powered off, cut off power supply.
The equipment cover plate or operating cavity of installing auxiliary part are opened, if gas exceeding limit or having electricity, blocking device or cover plate
It is locked, with corresponding key or cover plate or the operating cavity of not opening of swiping the card,
Or auxiliary member sends status signal and gas exceeding limit signal to antiknock monitoring station on time or has electric signal,
Or, if auxiliary member failure for some reason, antiknock monitoring station cut-out power supply,
Antiknock monitoring station is connected with net with network wire/wireless, or independent operating, and antiknock monitoring station sets a far leakage experiment
Button, in electric substation or distributor point or ground by far leakage test button, remote to leak experiment action, the electric leakage during experiment power supply switchs is protected
Shield whether action message.
Each mark in Figure 10 represents respectively：40：Antiknock monitoring station：By information processing and memory cell, display unit,
Alarm unit, power supply, system interface, I/O interfaces composition；401：System interface：RS485 communicates；402：Information processing and storage
Unit：8051 kernel single-chip microcomputers；403：Display unit：12864 LCDs；404：Alarm unit：Acousto-optic, audio alert
Device；405：Power supply：Mine explosion-suppression and intrinsic safety type power supply；406：Bus；407：I/O interfaces：FSK circuits；408：Remote leakage experiment is pressed
Button；160：Power switch cutoff instrument；105：Power switch sensor of uncapping；20：Power switch alarm type is anti-to uncage；
130：Power switch is anti-lock with alarm type two；120：Power switch feed sensor；110：Terminal box sensor of uncapping；
100：On-load switch on-off transducer；101：On-load switch is uncapped sensor；90：On-load switch gas exceeding limit is established lid by cable and closed
Locking device；70：Motor sensor of uncapping；8：Remote leakage experimental rig；
Reference picture 9 and Figure 10, simple antiknock monitoring station 40 include, information processing and memory cell 402：8051 kernel monolithics
Machine；Display unit 403：12864 LCDs；Alarm unit 404：Acousto-optic, phonetic alarm；Power supply 405：Mine explosion-suppression is simultaneous
Intrinsic safety type power supply；I/O interfaces (407)：FSK circuits；System interface 401：RS485 communicates；Remote leakage test button 408.
Program is loaded onto to simple antiknock monitoring station 40, each device installation shown in Fig. 8 is connected to underground tunnel power supply system
On system, along two order wires 406 powered with intrinsic safety electric source of roadway layout, and connected with simple antiknock monitoring station 40 with bus mode
Connect, each device shown in Fig. 8 is connected on this two order wires 406 by signal adapter, monitored with simple antiknock according to numbering
Stand 40 communications, and monitored by simple antiknock monitoring station 40.
When opening 7 wire connection cavity cover plate of motor, the pouring type installed by bolt cover 6 is first unlocked with special key and is uncapped
Sensor 70, sensor 70 of being uncapped after unblock remove signal alarm to simple antiknock monitoring station 40 hair, and simple antiknock monitoring station 40 connects
Sound and light alarm is sent after to alarm signal, the contact for sensor 70 of uncapping directly disconnects the 36v control loops of on-load switch 10, and
The locking switch 10, ensure that he can not be to the wire connection cavity power transmission of motor 7.If switch 10 can not power off for some reason, simple antiknock
Power switch 15 is powered off simultaneously locking by the order cutoff instrument 160 of monitoring station 40.
When such as opening 10 junction box cover plate of the cover plate of cable coupling box 11 or on-load switch, first unlocked or brushed with specific purpose tool
The sensor 101 of uncapping that card unblock is installed by bolt sleeve, the simple order cutoff instrument 160 of antiknock monitoring station 40 is power switch 15
Power off simultaneously locking.
15 operating cavities are turned on the power switch, first with corresponding key or opening latch-up protection device 13 of swiping the card, latch-up protection
Device 13 is alarmed to simple antiknock monitoring station 40 simultaneously, and latch-up protection device 13 can be with simple antiknock monitoring station 40 wirelessly
Connection.If simple antiknock monitoring station 40 judges that power switch 15 does not power off for some reason by feed sensor 105, then alarms simultaneously
Cut off the power supply 17 of the power switch 15.During power failure, latch-up protection device 13 is locked, and send and close to simple antiknock monitoring station 40
The status signal of lock protective device 13 at this moment.During power transmission, first pass through simple antiknock monitoring station 40 and release power transmission locking to be awarded
Power, with corresponding key or opening latch-up protection device 13 of swiping the card, then power transmission.
Loudspeaker nozzle is loosened, is first had a power failure, then with corresponding key or swipes the card and opens locking device, and to simple antiknock monitoring station
Alarm 40, if do not powered off, the simple order power switch 15 of antiknock monitoring station 40 powers off.
The operating cavity of on-load switch 10 is opened, if gas exceeding limit, the big lid of operating cavity is by gas exceeding limit blocking device 90
Locking, makes operating cavity not open, and sends status signal and gas exceeding limit signal to antiknock monitoring station, can if failure for some reason
Opening operation chamber when can have electricity and gas exceeding limit, simple antiknock monitoring station 40 make the switch break by the cutoff instrument of on-load switch 10
Electricity.
If the wire connection cavity cover plate of on-load switch 10 has been mounted with electric locking type and uncapped sensor, when powered in wire connection cavity
When, wire connection cavity cover plate is blocked, and with corresponding key or cover plate of not opening of swiping the card, and sends state letter to simple antiknock monitoring station 40
Number and there is electricity not open signal, opening could be unlocked after power failure.
Simple antiknock monitoring station sets one far to leak test button, in distributor point by remote leakage test button, remote leakage experimental rig 8
Action, by feed sensor 120 judge power switch 15 in earth leakage protective whether action message.
In summary, the present invention has the advantages that：
The electric spark of underground coal mine is the main ignition source of actuation gas.The main behavior for producing actuation gas is violating the regulations
" livewire work ".Livewire work is mainly due to " power transmission, operation of uncapping without authorization without authorization " (abbreviation：Two arrogate to oneself) cause.Produce ignition
The key facility of the electric spark of gas is：Switch, motor and cable, main portions are：There is no the switch of interlocking protective device
Connection box for motor and connecting cable terminal box, and blocking device protect incomplete switching manipulation chamber；Mainly covered in terminal box
Plate is opened and not had the wiring mouth of locking protection to be loosened without authorization without authorization；The mainly big lid (OR gate) of switching manipulation chamber is by without authorization
Open.
As long as underground coal mine be also easy to produce spark equipment and position as shown in figure 3, control these positions can be to prevent
Only most electric spark of actuation gas.And electrically spark is other non-originals violating the regulations caused by reason violating the regulations to the overwhelming majority
Electrically spark accounts for very small part because caused by, about below 5%[3].Because cable have high intensity sheath protection, have screen layer,
Line and electric leakage monitoring protection are monitored, cable is broken the electric spark probability for producing actuation gas by stone etc., with reason phase violating the regulations
Than very little, other have the shell either intrinsic safety type electrical equipment of fastening, the electric fire for producing actuation gas are broken by stone etc.
Flower probability is smaller.
As shown in figure 9, after installation antiknock equipment, can prevent from that switch, motor and cable are broken rules and regulations to carry out power transmission without authorization or arrogated to oneself
From operation of uncapping, and then prevent livewire work.Remote leakage experiment substantially increases sensitivity and the reliability of earth leakage protective device, i.e.,
Livewire work violating the regulations or other non-reasons violating the regulations are made to produce electric spark, earth leakage protective action message, electric spark can not draw
Quick-fried gas.The additional devices such as gas exceeding limit (or having electricity) blocking device, as the necessary complement of other technologies, when networking is inconvenient
When, it can be ensured that gas exceeding limit or equipment cover plate of not opening when having electricity.
Existing equipment in use is changed without, and after supporting application antiknock equipment, so that it may livewire work is prevented, prevents underground about
The electric spark of 100% actuation gas, the research conclusion taught according to foregoing Sun Jiping, with regard to 48.1% (about half) can be reduced
Gas explosion, generate unexpected integrated innovation effect.
Although above-mentioned elaborate to the present invention, the invention is not restricted to this, and those skilled in the art can
To be modified according to the principle of the present invention, therefore, the various modifications that all principles according to the present invention are carried out all should be understood to
Fall into protection scope of the present invention.
Claims (12)
- A kind of 1. method for preventing colliery livewire work and gas explosion, it is characterised in that comprise the following steps：Surveillance center utilizes the leak(age) test device near supply line's end load switch of electric power system, from a distant place Examine earth leakage protective reliability；Surveillance center examines the result of earth leakage protective reliability to be controlled electric power system according to a distant place, to prevent leak-stopping electric protection Electric power system continues to power after failure；During Surveillance center is powered according to the normal outcome control electric power system of distant place inspection earth leakage protective reliability, Surveillance center is carried out using the protection device being separately mounted on each charging equipment by electric power system to each charging equipment Control, to avoid charging equipment from causing electric shock accidents or its electric spark to trigger gas explosion；Wherein, when the charging equipment is the switchgear with blocking device, the protection device is to be set installed in switch Latch-up protection device on standby blocking device；Wherein, when the charging equipment is the equipment with wire connection cavity, the protection device is installed in the wire connection cavity Cover plate opening-closing state sensor on cover plate；Wherein, when the charging equipment is the equipment with wiring mouth, the protection device is on the wiring mouth Locking device；Wherein, when the charging equipment has wire connection cavity cover plate or operating cavity door closure, the protection device is installed in described Gas exceeding limit on wire connection cavity cover plate or operating cavity door closure is uncapped blocking device, or for installed in the wire connection cavity cover plate or behaviour Lid blocking device is established by cable as what chamber door covered.
- 2. according to the method for claim 1, it is characterised in that described latch-up protection device includes：Down lock body；Upper lock body on down lock body, the accommodation space for being used for disposing object to be locked is formed between down lock body；It is used for locking the one-level lock core of the object to be locked on down lock body；On down lock body and connect the detection means of Surveillance center connection.
- 3. according to the method for claim 2, it is characterised in that the Surveillance center is using the latch-up protection device and leads to Electric power system switching devices are crossed to be controlled, including：Surveillance center receives the status signal for the latch-up protection device that the latch-up protection device is sent；Surveillance center determines whether latch-up protection device locks according to the status signal；If it is determined that latch-up protection device does not lock, then Surveillance center's control electric power system cut-out is powered to the switchgear；If it is determined that latch-up protection device has locked, then Surveillance center according to latch-up protection device in the unlocking signal then sent, Control electric power system is normal to being powered operation or display blocking device to the switchgear on demand.
- 4. according to the method for claim 1, it is characterised in that described cover plate opening-closing state sensor includes：Locking bolt cover；It is bolted the electrical equipment cover plate of locking bolt cover；The key and lock core being arranged in the locking side opening of bolt cover one；The locking screws being arranged in the upper hole of locking bolt cover；The action sensor for the band action rodmeter being arranged in the upper hole of locking bolt cover；Wherein, the action sensor is connected with Surveillance center, and the lower end of action sensor bar crimps with bolt head on bolt, spiral shell Distance set is cased with bolt, distance is put to be connected provided with annular fore shaft, annular fore shaft with lock core.
- 5. according to the method for claim 4, it is characterised in that the Surveillance center is sensed using the cover plate opening-closing state Device is simultaneously controlled by electric power system to the charging equipment, including：Surveillance center receives the unlocking signal that the cover plate opening-closing state sensor is sent when cover plate is opened；Surveillance center powers according to the unlocking signal received, control electric power system cut-out to the charging equipment；AndAfter what Surveillance center sent when being subsequently received the cover plate opening-closing state sensor in cover plate closing shuts signal, control Electric power system processed is powered to the charging equipment.
- 6. according to the method for claim 1, it is characterised in that the locking device includes：Upper lock body, down lock body, lock core And key, and be arranged between upper lock body and down lock body and sensor that connect the Surveillance center；Described upper and lower lock Shape is semicircle body, and the upper protruding ring for preventing lock body from being released from loudspeaker nozzle is respectively equipped with upper and lower lock body with Protruding ring；Described upper lock body is provided with the passage passed in and out for lock core, key, and the screw coordinated with lock core is provided with down lock body.
- 7. according to the method for claim 6, it is characterised in that the Surveillance center is using the locking device and passes through institute Electric power system is stated to be controlled the charging equipment, including：The wiring that the locking device is sent to the Surveillance center is received to have a loose tongue dynamic signal；Had a loose tongue dynamic signal according to the wiring, show or control the electric power system to be powered on demand to the charging equipment.
- 8. according to the method for claim 1, it is characterised in that described gas exceeding limit is established lid blocking device by cable and included Lock housing, lock object, loaded on the motor drive mechanism in lock housing, signal processing module and the monitoring probe in lock housing；Described Motor drive mechanism is provided with flexible motor drive mechanism locking head, and motor drive mechanism is connected with signal processing module, signal processing module and prison Probing head and Surveillance center connection.
- 9. according to the method for claim 8, it is characterised in that the Surveillance center is using the gas exceeding limit or establishes by cable Lid blocking device is controlled to the charging equipment, including：Surveillance center, which receives the gas exceeding limit or had, establishes watt that lid blocking device is sent when detecting that gas density transfinites by cable This signal that transfinites；Surveillance center cuts off the power supply to the charging equipment according to the gas exceeding limit signal, control electric power system；Wherein, to the cover plate of wire connection cavity or the door closure of operating cavity of unlatching electrical equipment, file a request, monitor to Surveillance center Center is to gas exceeding limit or establishes lid blocking device by cable and sends signal, the action unblock of its electromagnetic mechanism, can just be opened after being authorized Lock.
- A kind of 10. system for preventing colliery livewire work and gas explosion, it is characterised in that including：Leak(age) test device near supply line's end load switch of electric power system, leaks electricity for being examined from a distant place The reliability of protection；The protection device being separately mounted on each charging equipment；Respectively with the protection device and the Surveillance center of the wired or wireless connection of leak(age) test device, for being examined according to a distant place The result of earth leakage protective reliability is controlled to electric power system, and electric power system continues to power after being failed to prevent leak-stopping electric protection, And control is powered to each charging equipment according to the alarm signal from the protection device；Each charging equipment and the Coal Mine Power Distribution System for the control signal for receiving the Surveillance center are connected via supply lines；Wherein, the charging equipment is the switchgear with blocking device, and the protection device is installed in switchgear Latch-up protection device on blocking device；Wherein, the charging equipment is the equipment with wire connection cavity, and the protection device is the cover plate installed in the wire connection cavity On cover plate opening-closing state sensor；Wherein, the charging equipment is the equipment with wiring mouth, and the protection device is anti-on the wiring mouth Loose device；Wherein, when the charging equipment has wire connection cavity cover plate or operating cavity door closure, the protection device is installed in wiring Gas exceeding limit on chamber lid plate or operating cavity door closure is uncapped blocking device, or for installed in the wire connection cavity cover plate or operating cavity Lid blocking device is established by cable on door closure.
- 11. system according to claim 10, it is characterised in that the Surveillance center includes：Connect each protection device For the communication interface for the alarm signal for receiving its transmission；The controller or processor of the communication interface are connected, for handling The alarm signal for the protection device that communication interface receives, and corresponding control signal is sent to electric power system according to result, To control electric power system to the homework of supplying power of corresponding charging equipment；Leak(age) test button, sent Lou for starting controller Electric test signal, the signal are sent near supply line's end load switch of electric power system via communication interface Leak(age) test device；And input unit, display device and the memory of the controller are connected respectively.
- 12. system according to claim 10, it is characterised in that the leak(age) test device includes：Its one end is connected to The test for ground resistance of any phase line of controlling switch mains side triple line；It is connected between the test for ground resistance other end and ground wire Switch execution unit；Connect the control unit for controlling switch execution unit make-break operation of Surveillance center；Control unit Part and test for ground resistance are connected to the switch protection part on the power line of colliery.
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| CN106452111B (en) * | 2016-11-25 | 2020-06-02 | 山西全安新技术开发有限公司 | Power supply method of intrinsic safety power supply and intrinsic safety power supply system |
| CN107833419A (en) * | 2017-12-08 | 2018-03-23 | 太原理工大学 | A kind of advanced Pre-control System based on fiber grating |
| CN109025995B (en) * | 2018-09-03 | 2023-06-09 | 中国矿业大学(北京) | Underground coal body strength penetration testing device and method |
| CN113708224B (en) * | 2021-10-28 | 2022-03-18 | 江苏云洋电力科技有限公司 | High-efficient current-limiting distribution switch that distribution terminal used |
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