CN105332735A - System and method for preventing live working and gas explosion in coal mine - Google Patents
System and method for preventing live working and gas explosion in coal mine Download PDFInfo
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- CN105332735A CN105332735A CN201410391907.5A CN201410391907A CN105332735A CN 105332735 A CN105332735 A CN 105332735A CN 201410391907 A CN201410391907 A CN 201410391907A CN 105332735 A CN105332735 A CN 105332735A
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Abstract
The invention discloses a system and a method for preventing live working and gas explosion in a coal mine. The method includes: by the aid of an electric leakage test device mounted close to a load switch at the tail end of a power supply circuit of a power supply system, a monitoring center remotely tests reliability of leakage protection; when the monitoring center controls the power supply system to supply power according to a normal result of leakage protection reliability tested remotely, the monitoring center controls all electrified devices through the power supply system by the aid of a protection device mounted on each electrified device, so that electric shock accidents caused by the electrified devices or gas explosion caused by electrical sparks of the electrified devices can be avoided. The protection devices are one of or combination of latch-up protection devices mounted on latching devices of switch equipment, cover plate opening-closing sensors mounted on cover plates of wiring cavities, anti-looseness devices mounted on wiring terminals and gas overrun uncovering locking devices mounted on wiring cavity cover plates or operation cavity door covers of the electrified devices.
Description
Technical field
The present invention relates to technical field of mine safety, particularly a kind of method and system of preventing colliery livewire work and gas explosion.
Background technology
The situation of electric burning things which may cause a fire disaster actuation gas is within coal mines maximum, is approximately 48.1% ".In colliery, the main cause of actuation gas accident or electric shock accidents is the livewire work of coal mine equipment.
Existing blocking device main manifestations is: screwdriver or free-handly just can move deadlock lever and power transmission or operation of uncapping without authorization without authorization; Common door lock in punch lock on deadlock lever, this method can not on the switch of Long-Time Service in down-hole dynamically uses, reason is: have how many switches must have the key of several times number of switches, and door lock easily gets rusty, be difficult to use and manage, in addition, do not have the switch of deadlock lever cannot common door lock in punch lock; Blocking device installs some mechanisms additional, only have and could move by operation locking bar with special tools such as triangle sleeve pipes, this method can not on the switch of Long-Time Service in down-hole dynamically uses, reason is: a kind of Switch Controller answers a kind of instrument, there are ten kinds of switches in a unit, workman just must be with ten kinds of instruments, and in reality, inconvenience management uses; The large lid common wrench that high-voltage switch gear is interlocked with isolating switch or sleeve pipe just can be opened, and this structure can not prevent the non-full-time personnel with general tool to uncap without authorization operation.Incident case we collected 50, dead 4501 people.
Existing wire connection cavity main manifestations is: without interlocking protective device, and electrical apparatus interstar connection chamber cover plate plain bolt is fixed, not lock, with the just charged operation of uncapping of energy of the common tools such as spanner, card silk pincers, pipe wrench, produces electric spark actuation gas.
Existing cable entry main manifestations is: screw-type loudspeaker nozzle, free-handly can unscrew and cause electrically " losing quick-fried ", not meet the requirement of GB3836.1 appendix A.The accident caused about " losing quick-fried " we collected 52, dead 1283 people.
On the other hand, the narrow particular surroundings work that workman is darker in down-hole, compare ground handling operator's livewire work more violating the regulations, as: operation locking device power transmission without authorization, or break rules and regulations to open the large lid operation in switch chamber without authorization, or break rules and regulations to open the cover plate livewire work of electrical apparatus interstar connection chamber without authorization, or loosening loudspeaker nozzle without authorization violating the regulations, etc., thus cause electrical safety accident.
In addition, prior art does not have gas exceeding limit uncap locking device yet and has electricity not open lid (door) device, at gas exceeding limit and workman's (door) livewire work of uncapping violating the regulations frequently when having electricity.
In addition, prior art does not have special distance leakage testing device, cannot carry out distance leakage testing, is difficult to test earth leakage protective reliability and sensitivity, state that earth leakage protective is often in " malfunctioning ".There is no special prevention colliery livewire work and the integrated system of gas explosion.
Summary of the invention
The object of this invention is to provide a kind of method and system of preventing colliery livewire work and gas explosion; by installing corresponding protective device in each charging equipment in colliery; the alarm signal that these protective devices of real-time collecting detect; control the electric power system in colliery to the power supply of each charging equipment, thus realize the control of colliery livewire work and gas explosion.
The method of prevention colliery livewire work of the present invention and gas explosion comprises the following steps:
Surveillance center utilizes the leak(age) test device near the supply line's end on-load switch being arranged on electric power system, checks earth leakage protective reliability from a distant place;
Surveillance center controls electric power system according to the result of distant place inspection earth leakage protective reliability, in case leak-stopping electric protection is lost efficacy, rear electric power system continued power supply;
During Surveillance center carries out powering according to the normal outcome control electric power system of distant place inspection earth leakage protective reliability, Surveillance center utilizes the protective device be arranged on respectively on each charging equipment, by electric power system, described each charging equipment is controlled, cause electric shock accidents or its electric spark to cause gas explosion to avoid charging equipment;
Wherein, when described charging equipment is the switchgear with blocking device, described protective device is the latch-up protection device be arranged on the blocking device of switchgear;
Wherein, when described charging equipment is the equipment with wire connection cavity, described protective device is the cover plate opening-closing state sensor be arranged on the cover plate of described wire connection cavity;
Wherein, when described charging equipment is the equipment with wiring mouth, described protective device is be arranged on the locking device on described wiring mouth;
Wherein, described protective device is the gas exceeding limit that is arranged on the wire connection cavity cover plate of charging equipment or operating cavity door closure or has electric uncap locking device.
Preferably, described latch-up protection device comprises: down lock body; Be arranged on the upper lock body on down lock body, and between down lock body, form the accommodation space being used for settling and waiting to lock object; Be arranged on one-level lock core down lock body being used for waiting described in locking to lock object; To be arranged on down lock body and to connect the checkout gear that described Surveillance center connects.
Preferably, described Surveillance center is utilized described latch-up protection device and is controlled by electric power system switching devices, comprising: Surveillance center receives the status signal of the latch-up protection device that described latch-up protection device sends; Surveillance center, according to described status signal, determines whether latch-up protection device locks; If determine, latch-up protection device does not lock, then Surveillance center's control electric power system is cut off and powered to described switchgear; If determine, latch-up protection device locks, then the unlocking signal that sending subsequently according to latch-up protection device of Surveillance center, controls electric power system as required to described switchgear being carried out to powered operation or display blocking device is normal.
Preferably, described cover plate opening-closing state sensor comprises: locking bolt cover; Be bolted the electric fixtures cover plate of locking bolt cover; Be arranged on the key in locking bolt cover one side opening and lock core; Be arranged on the locking screws in the upper hole of locking bolt cover; Be arranged on the action sensor of the band action rodmeter in the upper hole of locking bolt cover; Wherein, described action sensor is connected with Surveillance center, and the lower end of action sensor bar crimps with bolt head on bolt, and on bolt, cover has distance cover, and distance puts and is provided with annular fore shaft, and annular fore shaft is connected with lock core.
Preferably, described Surveillance center is utilized described cover plate opening-closing state sensor and is controlled described charging equipment by electric power system, comprising: Surveillance center receives the unlocking signal that described cover plate opening-closing state sensor sends when cover plate is opened; Surveillance center, according to received unlocking signal, controls electric power system cut-out and powers to this charging equipment; After the pass lock signal that Surveillance center sends when receiving described cover plate opening-closing state sensor subsequently at cover plate closing, controlling electric power system and this charging equipment is powered.
Preferably, described locking device comprises: upper lock body, down lock body, lock core and key, and is arranged between upper lock body with down lock body and is connected the sensor of described Surveillance center; Described upper and lower lock body shape is semicircle body, is respectively equipped with the projection ring and lower convexity ring that prevent lock body from getting loose from loudspeaker nozzle in upper and lower lock body; Described upper lock body is provided with the passage for lock core, key turnover, is provided with the screw coordinated with lock core at down lock body.
Preferably, described Surveillance center is utilized described locking device and is controlled described charging equipment by described electric power system, comprising: receive described locking device and to have a loose tongue dynamic signal to the wiring that described Surveillance center sends; To have a loose tongue dynamic signal according to described wiring, show or control described electric power system and as required described charging equipment is powered.
Preferably, described gas exceeding limit or have electric uncap locking device to comprise lock housing, lock object, the monitoring probe being loaded on the motor drive mechanism in lock housing, signal processing module and being contained 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, and signal processing module is connected with monitoring probe and described Surveillance center.
Preferably, described Surveillance center utilizes described gas exceeding limit or has electric uncap locking device to control described charging equipment, comprising: the gas exceeding limit signal that Surveillance center receives described gas exceeding limit or has electric uncap locking device to send when detecting that gas density transfinites; Gas exceeding limit signal described in Surveillance center, controls the power supply of electric power system cut-out to described charging equipment.
Preferably, described protective device is connected with described Surveillance center is wired or wireless; Described each charging equipment is connected by supply lines with described electric power system; And Surveillance center, by controlling the switch of described electric power system, realizes the power supply control to each charging equipment reality.To open the cover plate of wire connection cavity or the door closure of operating cavity of electric fixtures, file a request to Surveillance center, Surveillance center is to gas exceeding limit or have electric uncap locking device to send signal, and its electromagnetic mechanism action unlocks, and just can unblank after obtaining the authorization.
A kind of system of colliery livewire work and gas explosion of preventing of the present invention comprises:
Leak(age) test device near the supply line's end on-load switch being arranged on electric power system, for checking earth leakage protective reliability from a distant place;
Be arranged on the multiple protective devices on each charging equipment respectively;
With described protective device and the wired or wireless Surveillance center be connected of leak(age) test device, for controlling electric power system according to the result of distant place inspection earth leakage protective reliability, in case leak-stopping electric protection is lost efficacy, rear electric power system continued power supply, and carried out power supply control according to the alarm signal from described protective device to each charging equipment;
Connect each charging equipment via supply lines and receive the Coal Mine Power Distribution System of the control signal of described Surveillance center;
Wherein, described charging equipment is the switchgear with blocking device, and described protective device is the latch-up protection device be arranged on the blocking device of switchgear;
Wherein, described charging equipment is the equipment with wire connection cavity, and described protective device is the cover plate opening-closing state sensor be arranged on the cover plate of described wire connection cavity;
Wherein, described charging equipment is the equipment with wiring mouth, and described protective device is be arranged on the locking device on described wiring mouth;
Wherein, described protective device is the gas exceeding limit that is arranged on the wire connection cavity cover plate of charging equipment or operating cavity door closure or has electric uncap locking device.
Preferentially described Surveillance center comprises: connect each protective device for receiving the communication interface of the alarm signal of its transmission; Connect controller or the processor of described communication interface, for the treatment of the alarm signal of the protective device that communication interface receives, and send corresponding control signal according to result to electric power system, to control the homework of supplying power of electric power system to corresponding charging equipment; Leak(age) test button, sends leak(age) test signal for start-up connector, and this signal sends to the leak(age) test device near the supply line's end on-load switch being arranged on electric power system via communication interface; And connect the input unit of described controller, display unit and memory respectively.
Preferably, described leak(age) test device comprises: its one end is connected to the test for ground resistance of the arbitrary phase line of described on-load switch mains side triple line; Be connected to the switch execution unit between the test for ground resistance other end and ground wire; Connect the control assembly for the make-break operation of gauge tap execution unit of Surveillance center; Control assembly and test for ground resistance are connected to the switch protection parts on the power line of colliery.
Relative to prior art, Advantageous Effects of the present invention it is possible to monitor in real time the various charging equipments in colliery, thus avoids charging equipment to cause electric shock accidents or its electric spark to cause gas explosion.
Below in conjunction with accompanying drawing, the present invention is described in detail, to be expressly understood above-mentioned purpose of the present invention and effect.
Accompanying drawing explanation
Fig. 1 is the system schematic that the present invention is used for realizing the method for preventing colliery livewire work and gas explosion;
Fig. 2 is the schematic diagram of the Surveillance center's structure in Fig. 1;
Fig. 3 is the schematic diagram of the latch-up protection device that the present invention adopts;
Fig. 4 is the schematic diagram of the above-mentioned cover plate opening-closing state sensor that the present invention adopts;
Fig. 5 is the schematic diagram of the locking device that the present invention adopts;
Fig. 6 is the gas exceeding limit that the present invention adopts or the schematic diagram having electric uncap locking device;
Fig. 7 is the block diagram of the leak(age) test device that the present invention adopts;
Fig. 8 is a physical circuit figure of the leak(age) test device shown in Fig. 7;
Fig. 9 is that the present invention is used for the schematic diagram of an embodiment of system of the method realizing prevention colliery livewire work and gas explosion;
Figure 10 is that the present invention is used for the schematic diagram of another embodiment of system of the method realizing prevention colliery livewire work and gas explosion.
Detailed description of the invention
Fig. 1 shows the system of the method realizing prevention colliery livewire work of the present invention and gas explosion,
See Fig. 1, the method for prevention colliery livewire work of the present invention and gas explosion, comprises the following steps:
Surveillance center utilizes the leak(age) test device near the supply line's end on-load switch being arranged on electric power system, checks earth leakage protective reliability from a distant place;
Surveillance center controls electric power system according to the result of distant place inspection earth leakage protective reliability, in case leak-stopping electric protection is lost efficacy, rear electric power system continued power supply;
During Surveillance center carries out powering according to the normal outcome control electric power system of distant place inspection earth leakage protective reliability, Surveillance center utilizes the protective device be arranged on respectively on each charging equipment, by electric power system, described each charging equipment is controlled, cause electric shock accidents or its electric spark to cause gas explosion to avoid charging equipment;
Wherein, when described charging equipment is the switchgear with blocking device, described protective device is the latch-up protection device be arranged on the blocking device of switchgear;
Wherein, when described charging equipment is the equipment with wire connection cavity, described protective device is the cover plate opening-closing state sensor be arranged on the cover plate of described wire connection cavity;
Wherein, when described charging equipment is the equipment with wiring mouth, described protective device is be arranged on the locking device on described wiring mouth;
Wherein, described protective device is the gas exceeding limit that is arranged on the wire connection cavity cover plate of charging equipment or operating cavity door closure or has electric uncap locking device.
Fig. 2 shows the structure of Surveillance center of the present invention, comprising: connect each protective device for receiving the communication interface of the alarm signal of its transmission; Connect controller or the processor of described communication interface, for the treatment of the alarm signal of the protective device that communication interface receives, and send corresponding control signal according to result to electric power system, to control the homework of supplying power of electric power system to corresponding charging equipment; Leak(age) test button, sends leak(age) test signal for start-up connector, and this signal sends to the leak(age) test device near the supply line's end on-load switch being arranged on electric power system via communication interface; And connect the input unit of described controller, display unit and memory respectively.
Fig. 3 shows the structure of the latch-up protection device that the present invention adopts, and as shown in Figure 3, comprising: down lock body 803; Be arranged on the upper lock body 801 on down lock body 803, and between down lock body 803, form the accommodation space being used for settling and waiting to lock object 804; Be arranged on the one-level lock core 807 down lock body 803 being used for waiting described in locking to lock object 804; To be arranged on down lock body 803 and to connect the checkout gear that described Surveillance center 100 connects; Be arranged at least one the secondary lock core 810 down lock body 803 being used for prevent one-level lock core 807 to be unlocked; And screw 809.
Down lock body 803 is provided with the first lock core placement hole 803b, the first lock core placement hole 803b is communicated with described accommodation space, and described one-level lock core 807 is placed in the first lock core placement hole 803b.
Checkout gear comprises: be arranged on the switch 808 on described first lock core placement hole 803b inwall; Be arranged on the signal processor 806 that described down lock body 803 is connected with switch 808, be electrically connected with described warning system 805.
As shown in Figure 1, Surveillance center of the present invention is utilized described protective device and to be monitored charging equipment by electric power system and control, and specifically comprises: Surveillance center receives the status signal of the latch-up protection device that described latch-up protection device sends; Surveillance center, according to described status signal, determines whether latch-up protection device locks; If determine, latch-up protection device does not lock, then Surveillance center's alarm indication or control electric power system are cut off and powered to described switchgear; If determine, latch-up protection device locks, then the signal that sending subsequently according to latch-up protection device of Surveillance center, controls electric power system and carries out powered operation to described switchgear as required.
Fig. 4 shows the structure of the above-mentioned cover plate opening-closing state sensor that the present invention adopts, and comprising: locking bolt cover 822; Bolt 826; The electric fixtures cover plate 821 of locking bolt cover 822 is connected by bolt 825; Be arranged on the key 823 in locking bolt cover 822 1 side opening and lock core 824; Be arranged on the locking screws 8211 in the upper hole of locking bolt cover 822; Be arranged on the action sensor 829 of the band action rodmeter 828 in the upper hole of locking bolt cover 822; Wherein, described action sensor 829 is connected with Surveillance center 100, and the lower end of action sensor bar 828 crimps with bolt head on bolt 825, and on bolt 825, cover has distance cover 827, and distance cover 827 is provided with annular fore shaft, and annular fore shaft is connected with lock core 824.
Surveillance center 100 of the present invention is utilized described cover plate opening-closing state sensor and is controlled described charging equipment by electric power system, comprising: Surveillance center receives the unlocking signal that described cover plate opening-closing state sensor sends when cover plate is opened; Surveillance center, according to received unlocking signal, controls electric power system cut-out and powers or display alarm to this charging equipment; And after the pass lock signal that sends when receiving described cover plate opening-closing state sensor subsequently at cover plate closing of Surveillance center, controlling electric power system and this charging equipment is powered.
Fig. 5 shows the structure of the locking device that the present invention adopts, comprise: upper lock body 832, down lock body 833, lock core 837 and key 838, and be arranged between upper lock body 832 with down lock body 833 and be connected the sensor (not shown) of described Surveillance center 100; Described upper and lower lock body shape is semicircle body, is respectively equipped with the projection ring 834 and lower convexity ring 835 that prevent lock body from getting loose from loudspeaker nozzle in upper and lower lock body; Described upper lock body 832 is provided with the passage passed in and out for lock core 837, key 838, is provided with the screw coordinated with lock core 837 at down lock body 833.In addition, auxiliary section upper lock body 832 and down lock body 833 passing in and out spool 831 with switch is broached-tooth design 839.
As shown in Figure 1, Surveillance center of the present invention is utilized described locking device and is controlled described charging equipment by described electric power system, comprising: receive described locking device and to have a loose tongue dynamic signal to the wiring that described Surveillance center sends; To have a loose tongue dynamic signal according to described wiring, control described electric power system and as required described charging equipment is powered or display alarm, such as stop power supply, then carry out time delay and power.
Fig. 6 shows the gas exceeding limit of the present invention's employing or has electric uncap locking device, as shown in Figure 6, comprising: lock housing 842, lock object 847, the monitoring probe 853 being loaded on the motor drive mechanism 844 in lock housing, signal processing module 849 and being contained in lock housing; Be arranged on the action sensor 848 that is connected with signal processing module 849 in lock housing 842 and be provided with the interface connecting coal mine safety monitoring system 849; Described motor drive mechanism is provided with flexible motor drive mechanism locking head 843, and motor drive mechanism is connected with signal processing module 849, and signal processing module is connected with monitoring probe and described Surveillance center 100.Lock object is fastening bolt cover 846 and the spring washer 855 of being with annular fore shaft, or mine switch locking bar protective.Lock housing is locking bolt cover 842, or not locking bolt cover, or deadlock lever cover.
When need overhaul electric fixtures, operate lock core 845 with special key 841, lock core 845 is exited fore shaft, take off lock housing (locking bolt cover) 842, can loose bolts, carry out operation of uncapping; Now action sensor detects operation of uncapping, and alarm signal is sent to Surveillance center, and realization is cut off the electricity supply by electric power system before uncapping, and realizes leading uncovering power-off.
When gas exceeding limit, monitoring probe 853 notification signal processing module 849, signal processing module 849 notifies motor drive mechanism 844 action of band hand-reset, motor mechanism locking head 843 stretches out, realize gas exceeding limit to uncap locking, acoustooptic alarm system 854 sends alarm signal or power-off signal simultaneously, and staff can not unlock with key operation, electrical apparatus interstar connection cover plate of also just not opening.Monitoring probe 853 also can be feed sensor or start-stop sensor, whether has electricity with checkout equipment, and at this moment just becoming has electric uncap locking device.
As shown in Figure 1, Surveillance center of the present invention utilizes described gas exceeding limit or has electric uncap locking device to control described charging equipment, comprising: the gas exceeding limit signal that Surveillance center receives described gas exceeding limit or has electric uncap locking device to send when detecting that gas density transfinites; Surveillance center, according to gas exceeding limit signal, controls the power supply of electric power system cut-out to described charging equipment.
As shown in Figure 1, protective device of the present invention carries out wired or wireless connection with described Surveillance center; Each charging equipment is connected by supply lines with described electric power system; And Surveillance center, by controlling the switch (not shown) of described electric power system, realizes the power supply control to each charging equipment.
As shown in Figure 7, leak(age) test device 860 comprises: its one end is connected to the test for ground resistance Rb of the arbitrary phase line of described on-load switch 864 mains side triple line; Be connected to the switch execution unit 861 between the test for ground resistance Rb other end and ground wire; Connect the control assembly 862 for gauge tap execution unit 861 make-break operation of Surveillance center 100; Control assembly 862 and test for ground resistance Rb are connected to the switch protection parts 863 on colliery power line 865.
As shown in Figure 8, control assembly 862 comprises: its elementary connected load switch 864 mains side triple line appoints the transformer B of two-phase; The rectifier ZL of its input connection transformer B level; Connect the treating apparatus DJ of Surveillance center 100, its power input connects the input of rectifier ZL, carry out make-break operation for the instruction gauge tap execution unit 861 according to Surveillance center, and be fed to the power failure information of colliery power line 865 to Surveillance center 100; Connect the local personal control of rectifier ZL level, it is made up of the first control button SA1 be connected in series and relay coil J.
Particularly, switch protection parts 863 comprise fuse RD and isolating switch GK, and transformer B is elementary to be connected on colliery power line 865 by fuse RD and isolating switch GK.
Treating apparatus DJ is cutoff instrument, and this cutoff instrument has: the controlled end connecting Surveillance center 100 via control circuit; The feedback end of Surveillance center is connected via feedback line; And external power supply end, this power input connects the input of rectifier ZL or connects the power supply input of substation JK.
Switch execution unit 861 comprises: the switch contact DJ1 controlled by treating apparatus DJ; The switch contact J1 controlled by local personal control.
Distance leakage testing button is pressed at monitoring system center, distance leakage testing instruction passes to treating apparatus DJ by control line, after DJ obtains instruction, gauge tap contact DJ1 closes, test for ground resistance Rb connects with the earth, now colliery power line 865, earth current is produced in the loop that leak(age) test device 3 and leak detection protective device (not shown) are formed, cut off the power supply of colliery power line 865, the power cut-off at distalmost end on-load switch 864 place, connect the leak(age) test device 860 of colliery power line 865 when power failure, the power failure information that its input voltage or electric current are zero will be obtained, treating apparatus DJ feeds back outage information to Surveillance center 100, Surveillance center 100 is effective according to this feedback outage information determination earth leakage protective, if leak(age) test is unsuccessful, protective device of then hunting leak can not cut off the power supply of colliery power line 865, thus making treating apparatus DJ feed back non-outage information to Surveillance center 100, Surveillance center 100 controls electric power system interruption of power supply, to overhaul according to this information.
See Fig. 1 to Fig. 8, present invention also offers a kind of system of preventing colliery livewire work and gas explosion, comprising:
Be arranged on the protective device on each charging equipment respectively;
The Surveillance center that be connected wired or wireless with described protective device, for carrying out power supply control according to the alarm signal from described protective device to each charging equipment;
Connect each charging equipment via supply lines and receive the Coal Mine Power Distribution System of the control signal of described Surveillance center;
Wherein, described charging equipment is the switchgear with blocking device, and described protective device is the latch-up protection device be arranged on the blocking device of switchgear;
Wherein, described charging equipment is the equipment with wire connection cavity, and described protective device is the cover plate opening-closing state sensor be arranged on the cover plate of described wire connection cavity;
Wherein, described charging equipment is the equipment with wiring mouth, and described protective device is be arranged on the locking device on described wiring mouth;
Wherein, described protective device is the gas exceeding limit that is arranged on the wire connection cavity cover plate of charging equipment or operating cavity door closure or has electric uncap locking device.
In conjunction with some specific embodiments, the present invention will be described more below, it should be noted that, below illustrates and only understand the present invention for those skilled in the art, but not be used for limiting the present invention, and content of the present invention should state bright being as the criterion above.
As shown in Figure 9, the installation of antiknock equipment is connected in electric power system: can comprise: equipment cover plate folding condition sensor 1, be called for short: folding sensor, as: sensor of uncapping, graded latch device, full cut-off locking device etc.; Latch-up protection device 13, as anti-lock in: alarm type two, swipe the card that open type two is anti-lock, wireless transmission type two is anti-lock; The locking protective device 5 of loudspeaker nozzle, is called for short: locking device, as: swipe the card open anti-to uncage, wireless transmission line is anti-uncages; Distance leakage testing device 8, is called for short: far leak test; Gas exceeding limit (or having electricity) uncap locking devices etc. 9, are called for short auxiliary tool; As the antiknock monitoring station 4 of above-mentioned Surveillance center 100.
The formation of antiknock equipment is expressed: antiknock equipment, by folding sensor 1, with antiknock monitoring station 4, and far leaks test 8, or latch-up protection device 13, or locking device 5, or auxiliary tool 9 combines by logical relation.
In Figure 10, electric power system is made up of power switch (or upper secondary switch), cable, cable coupling box, on-load switch (or upper level switch), motor (or load) etc., being the most elementary cell of underground power supply system shown in Fig. 8, is the underground power supply system simplified.Other equipments are all install to be connected in electric power system.
Folding sensor: be arranged on equipment by folding sensor, its relay tip and the networking operation of antiknock monitoring station realize uncapping and interlock.Open cover plate, must be unlocked with special key (or swiping the card) by full-time staff, i.e. " prevent non-full-time personnel from uncapping without authorization operation ".After unlocking, the action of activating sensor contact sends signal, antiknock monitoring station is passed to by wired or wireless, higher level's power supply of this wire connection cavity of antiknock monitoring station order cutting-off controlling, realize on the spot " warning of uncapping " at " losing quick-fried " front realization advanced " uncovering power-off ", this equipment, and report to the police at ground monitoring center, after uncapping, this higher level's power switch of locking; simultaneously ensure that he can not to this equipment wire connection cavity power transmission, i.e. " locking of uncapping ".
Major function prevents facility terminal cabinet upper cover plate from being opened by violating the regulations the electric spark producing actuation gas.Secondly, emergency can be used for illumination or alert help, when mine lamp does not have an electricity, takes off sensor of uncapping, utilizes its sound and light of alarm, can be used as emergency lighting and use; Or utilize its sound and light of alarm to other people alert help; Or realize personnel positioning by network savvy.
Latch-up protection device: be arranged on the blocking device of the equipment such as switch; or blocking device is inherently with protective device; only have full-time electrician to hold private key (or swiping the card) and could power transmission be unlocked or unblock is uncapped; other non-full-times personnel can not unlock power transmission and open the door closure livewire work of switching manipulation chamber without authorization, and are reported to the police to antiknock monitoring station by wired or wireless before unblock power transmission or unblock are uncapped.
Major function be prevent power transmission without authorization violating the regulations or without authorization opening door operation produce the electric spark of actuation gas.
Locking device: be arranged on wiring mouth, only have full-time electrician to hold private key (or swiping the card) could unlock, loosen, overhaul, other non-full-times personnel can not unlock, loosen loudspeaker nozzle, major function is the electric spark preventing loudspeaker nozzle from loosening " losing quick-fried " generation actuation gas, and is reported to the police to antiknock monitoring station by wired or wireless before loosening.
Leakage test far away: the on-load switch side being arranged on line end; and with the networking operation of antiknock monitoring station; can test earth leakage protective reliability in a distant place in Surveillance center, after preventing earth leakage protective to lose efficacy, electric power system continues to run phenomenon, and the electric spark stopping actuation gas produces.
Auxiliary tool: comprise gas exceeding limit (or having electricity) blocking device etc., be arranged on equipment wire connection cavity or the first-class position of operating cavity, gas is inside had to pop one's head in and motor drive mechanism, can ensure that electrical apparatus interstar connection chamber cover plate or door closure are not opened after gas exceeding limit, maybe can ensure that this wire connection cavity cover plate or door closure are not opened under electric fixtures electriferous state.Prevent the electric spark of chargedly to uncap, hotline maintenance produces actuation gas.With the networking operation of antiknock monitoring station, and report to the police to it.
Antiknock monitoring station: by the chip such as single-chip microcomputer or PLC, display, printer, input and output facility, performer, the computer supervisory control system leaking test button etc. and form far away; ground monitoring display system can be comprised, antiknock monitoring station of also can being held concurrently by the subelement in the monitoring systems such as Internet of Things, electric power monitoring system, safety system, safety monitoring system and on-off control system.
Antiknock method: folding sensor is tested installation and is connected in electric power system with far leaking, and is synchronously connected with antiknock monitoring station wire/wireless,
When opening load wire connection cavity cover plate, first unlocked with special tool or swipe the card the folding sensor unlocking and installed by bolt cover, after unlocking, folding sensor sends out signal alarm to antiknock monitoring station, antiknock monitoring station receives the report for police service after signal, order controls the upper level switch circuit breaking of this wire connection cavity power supply, or the contact of folding sensor directly disconnects the control loop of upper level switch, and this switch of locking, ensure that he can not to this equipment wire connection cavity power transmission
If upper level switch can not power-off for some reason, then the order of antiknock monitoring station cuts off upper secondary switch power-off and locking,
Or, when opening cable coupling box cover plate or on-load switch junction box cover plate, first unlock with special tool or swipe the card and unlock the folding sensor installed by bolt sleeve, its power switch power-off of antiknock monitoring station order locking.
Or latch-up protection device, or locking device, or auxiliary tool installation is connected in electric power system, be connected with antiknock monitoring station wire/wireless,
Turn on the power switch operating cavity, first with instrument or swipe the card and open latch-up protection device and open latch-up protection device, or report to the police to antiknock monitoring station simultaneously,
Or, if this switch does not have power-off, or report to the police again or cut off this Switching Power Supply,
During power failure, lock latch-up protection device, and send the status signal of latch-up protection device to antiknock monitoring station,
During power transmission, first remove power transmission locking to obtain the authorization by antiknock monitoring station, with special tool or swipe the card and open latch-up protection device, then power transmission.
Loosen loudspeaker nozzle 5, first have a power failure, then with instrument or swipe the card and open locking device, and report to the police to antiknock monitoring station or report to the police on the spot, or, if there is no power-off, cut off power supply.
Want equipment cover plate or the operating cavity of opening installation auxiliary tool, if gas exceeding limit or have electricity, blocking device or cover plate are locked, by corresponding key or cover plate or the operating cavity of not opening of swiping the card,
Or auxiliary tool sends status signal and gas exceeding limit signal to antiknock monitoring station or has the signal of telecommunication on time,
Or if auxiliary tool is malfunctioning for some reason, antiknock monitoring station cuts off power supply,
Antiknock monitoring station or be connected with network wire/wireless with net; or independent operating, antiknock monitoring station arranges one and far leaks test button, on electric substation or distributor point or ground by far leaking test button; leakage far away test action, the whether action message of the earth leakage protective in experiment power supply switch.
Each mark in Figure 10 represents respectively: 40: antiknock monitoring station: be made up of information processing and memory cell, display unit, alarm unit, power supply, system interface, I/O interface; 401: system interface: RS485 communication; 402: information processing and memory cell: 8051 kernel single-chip microcomputers; 403: display unit: 12864 LCDs; 404: alarm unit: acousto-optic, phonetic alarm; 405: power supply: mine explosion-suppression and intrinsic safety type power supply; 406: bus; 407:I/O interface: FSK circuit; 408: far leak test button; 160: power switch cutoff instrument; 105: power switch sensor of uncapping; 20: power switch alarm type is anti-to uncage; 130: power switch alarm type two is anti-lock; 120: power switch feed sensor; 110: junction box sensor of uncapping; 100: on-load switch start-stop sensor; 101: on-load switch is uncapped sensor; 90: on-load switch gas exceeding limit or have electric uncap locking device; 70: motor sensor of uncapping; 8: far leak experimental rig;
With reference to Fig. 9 and Figure 10, simple and easy antiknock monitoring station 40 comprises, information processing and memory cell 402:8051 kernel single-chip microcomputer; Display unit 403:12864 LCDs; Alarm unit 404: acousto-optic, phonetic alarm; Power supply 405: mine explosion-suppression and intrinsic safety type power supply; I/O interface (407): FSK circuit; System interface 401:RS485 communicates; Leakage test button 408 far away.
Program is loaded onto to simple and easy antiknock monitoring station 40, device each shown in Fig. 8 is installed to be connected in the electric power system of tunnel, down-hole, along the order wire 406 that roadway layout two is powered with intrinsic safety electric source, and be connected with bus mode with simple and easy antiknock monitoring station 40, shown in Fig. 8, each device is according to numbering, be connected on these two order wires 406 by signal adapter, with the communication of simple and easy antiknock monitoring station 40, and monitor by simple and easy antiknock monitoring station 40.
When opening motor 7 wire connection cavity cover plate, first unlock with special key the pouring type installed by bolt cover 6 to uncap sensor 70, sensor 70 of uncapping after unblock removes signal alarm to simple and easy antiknock monitoring station 40, simple and easy antiknock monitoring station 40 receives the report for police service after signal and sends sound and light alarm, the contact of sensor 70 of uncapping directly disconnects the 36v control loop of on-load switch 10, and this switch 10 of locking, ensure that he can not to motor 7 wire connection cavity power transmission.If switch 10 can not power-off for some reason, then simple and easy antiknock monitoring station 40 order cutoff instrument 160 is power switch 15 power-off and locking.
During as opened cable coupling box 11 cover plate or on-load switch 10 junction box cover plate, first unlock with special tool or swipe the card and unlock the sensor 101 of uncapping installed by bolt sleeve, simple and easy antiknock monitoring station 40 order cutoff instrument 160 is power switch 15 power-off and locking.
Turn on the power switch 15 operating cavity, first with corresponding key or swipe the card and open latch-up protection device 13, latch-up protection device 13 is reported to the police to simple and easy antiknock monitoring station 40 simultaneously, and latch-up protection device 13 wirelessly can be connected with simple and easy antiknock monitoring station 40.If by feed sensor 105, simple and easy antiknock monitoring station 40 judges that power switch 15 does not have power-off for some reason, then report to the police and cut off the power supply 17 of this power switch 15.During power failure, lock latch-up protection device 13, and send latch-up protection device 13 status signal at this moment to simple and easy antiknock monitoring station 40.During power transmission, first remove power transmission locking to obtain the authorization by simple and easy antiknock monitoring station 40, with corresponding key or swipe the card and open latch-up protection device 13, then power transmission.
Loosen loudspeaker nozzle, first have a power failure, then with corresponding key or swipe the card and open locking device, and report to the police 40 to simple and easy antiknock monitoring station, and if there is no power-off, the power-off of simple and easy antiknock monitoring station 40 order power switch 15.
Open the operating cavity of on-load switch 10, if gas exceeding limit, operating cavity large cover gas exceeding limit blocking device 90 locks, operating cavity is not opened, and send status signal and gas exceeding limit signal to antiknock monitoring station, if malfunctioning for some reason, may electricity be had and gas exceeding limit time opening operation chamber, simple and easy antiknock monitoring station 40 makes this switch circuit breaking by the cutoff instrument of on-load switch 10.
Electric locking type is had to uncap sensor if the wire connection cavity cover plate of on-load switch 10 has been installed, when charged in wire connection cavity, wire connection cavity cover plate is blocked, with corresponding key or cover plate of not opening of swiping the card, and send status signal to simple and easy antiknock monitoring station 40 and have electricity not open signal, could unlock after power failure and open.
Simple and easy antiknock monitoring station arranges one and far leaks test button, at distributor point by far leaking test button, far away leaks experimental rig 8 action, judges earth leakage protective in power switch 15 whether action message by feed sensor 120.
In sum, the present invention has following beneficial effect:
The electric spark of underground coal mine is the main ignition source of actuation gas.The main behavior producing actuation gas is " livewire work " violating the regulations.Livewire work is mainly because " without authorization power transmission, to uncap operation without authorization " (being called for short: two arrogate to oneself), causes.The key facility producing the electric spark of actuation gas is: switch, motor and cable, and main portions is: the switching motor junction box and the stube cable junction box that do not have interlocking protective device, and incomplete switching manipulation chamber protected by blocking device; In junction box, mainly cover plate is opened without authorization and is not had the wiring mouth of locking protection to be loosened without authorization; Switching manipulation chamber mainly large lid (or door) is opened without authorization.
Underground coal mine easily produces pyrophoric equipment and position as shown in Figure 3, as long as control the electric spark of actuation gas that these positions just can prevent the overwhelming majority.And the electric spark of the overwhelming majority is that reason violating the regulations produces, the electric spark that other non-reasons violating the regulations produce accounts for a very little part, about less than 5%
[3].Because cable has high strength sheath to protect; screen layer, pilot wire and electric leakage is had to monitor protection; cable is broken the electric spark probability producing actuation gas by stone etc.; very little compared with reason violating the regulations; other have fastening shell or intrinsic safety type electric fixtures, are broken the electric spark probability producing actuation gas less by stone etc.
As shown in Figure 9, after antiknock equipment is installed, can prevents from carrying out power transmission or operation of uncapping without authorization without authorization to switch, motor and cable are violating the regulations, and then prevent livewire work.Leakage test far away substantially increases sensitivity and the reliability of earth leakage protective device, even if livewire work violating the regulations or other non-reasons violating the regulations produce electric spark, earth leakage protective action message, electric spark can not actuation gas.The additional devices such as gas exceeding limit (or having electricity) blocking device, as the necessary complement of other technology, when networking inconvenient, equipment cover plate of not opening when can guarantee gas exceeding limit or have electricity.
Do not change existing equipment in use, and after supporting application antiknock equipment, just livewire work can be prevented, prevent the electric spark of down-hole about 100% actuation gas, according to the research conclusion that aforementioned Sun Jiping teaches, just can reduce the gas explosion of 48.1% (about half), create beat all integrated innovation effect.
Although above-mentioned to invention has been detailed description; but the present invention is not limited thereto; those skilled in the art can principle according to the present invention modify, and therefore, all various amendments carried out according to principle of the present invention all should be understood to fall into protection scope of the present invention.
Claims (12)
1. prevent a method for colliery livewire work and gas explosion, it is characterized in that, comprise the following steps:
Surveillance center utilizes the leak(age) test device near the supply line's end on-load switch being arranged on electric power system, checks earth leakage protective reliability from a distant place;
Surveillance center controls electric power system according to the result of distant place inspection earth leakage protective reliability, in case leak-stopping electric protection is lost efficacy, rear electric power system continued power supply;
During Surveillance center carries out powering according to the normal outcome control electric power system of distant place inspection earth leakage protective reliability, Surveillance center utilizes the protective device be arranged on respectively on each charging equipment, by electric power system, described each charging equipment is controlled, cause electric shock accidents or its electric spark to cause gas explosion to avoid charging equipment;
Wherein, when described charging equipment is the switchgear with blocking device, described protective device is the latch-up protection device be arranged on the blocking device of switchgear;
Wherein, when described charging equipment is the equipment with wire connection cavity, described protective device is the cover plate opening-closing state sensor be arranged on the cover plate of described wire connection cavity;
Wherein, when described charging equipment is the equipment with wiring mouth, described protective device is be arranged on the locking device on described wiring mouth;
Wherein, described protective device is the gas exceeding limit that is arranged on the wire connection cavity cover plate of charging equipment or operating cavity door closure or has electric uncap locking device.
2. method according to claim 1, is characterized in that, described latch-up protection device comprises:
Down lock body;
Be arranged on the upper lock body on down lock body, and between down lock body, form the accommodation space being used for settling and waiting to lock object;
Be arranged on one-level lock core down lock body being used for waiting described in locking to lock object;
To be arranged on down lock body and to connect the checkout gear that described Surveillance center connects.
3. method according to claim 2, is characterized in that, described Surveillance center is utilized described latch-up protection device and controlled by electric power system switching devices, comprising:
Surveillance center receives the status signal of the latch-up protection device that described latch-up protection device sends;
Surveillance center, according to described status signal, determines whether latch-up protection device locks;
If determine, latch-up protection device does not lock, then Surveillance center's control electric power system is cut off and powered to described switchgear;
If determine, latch-up protection device locks, then the unlocking signal that sending subsequently according to latch-up protection device of Surveillance center, controls electric power system as required to described switchgear being carried out to powered operation or display blocking device is normal.
4. method according to claim 1, is characterized in that, described cover plate opening-closing state sensor comprises:
Locking bolt cover;
Be bolted the electric fixtures cover plate of locking bolt cover;
Be arranged on the key in locking bolt cover one side opening and lock core;
Be arranged on the locking screws in the upper hole of locking bolt cover;
Be arranged on the action sensor of the band action rodmeter in the upper hole of locking bolt cover;
Wherein, described action sensor is connected with Surveillance center, and the lower end of action sensor bar crimps with bolt head on bolt, and on bolt, cover has distance cover, and distance puts and is provided with annular fore shaft, and annular fore shaft is connected with lock core.
5. method according to claim 4, is characterized in that, described Surveillance center is utilized described cover plate opening-closing state sensor and controlled described charging equipment by electric power system, comprising:
Surveillance center receives the unlocking signal that described cover plate opening-closing state sensor sends when cover plate is opened;
Surveillance center, according to received unlocking signal, controls electric power system cut-out and powers to this charging equipment; And
After the pass lock signal that Surveillance center sends when receiving described cover plate opening-closing state sensor subsequently at cover plate closing, controlling electric power system and this charging equipment is powered.
6. method according to claim 1, is characterized in that, described locking device comprises: upper lock body, down lock body, lock core and key, and is arranged between upper lock body with down lock body and is connected the sensor of described Surveillance center; Described upper and lower lock body shape is semicircle body, is respectively equipped with the projection ring and lower convexity ring that prevent lock body from getting loose from loudspeaker nozzle in upper and lower lock body; Described upper lock body is provided with the passage for lock core, key turnover, is provided with the screw coordinated with lock core at down lock body.
7. method according to claim 6, is characterized in that, described Surveillance center is utilized described locking device and controlled described charging equipment by described electric power system, comprising:
Receive described locking device to have a loose tongue dynamic signal to the wiring that described Surveillance center sends;
To have a loose tongue dynamic signal according to described wiring, show or control described electric power system and as required described charging equipment is powered.
8. method according to claim 1, is characterized in that, described gas exceeding limit or have electric uncap locking device to comprise lock housing, lock object, the monitoring probe being loaded on the motor drive mechanism in lock housing, signal processing module and being contained 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, and signal processing module is connected with monitoring probe and described Surveillance center.
9. method according to claim 8, is characterized in that, described Surveillance center utilizes described gas exceeding limit or has electric uncap locking device to control described charging equipment, comprising:
The gas exceeding limit signal that Surveillance center receives described gas exceeding limit or has electric uncap locking device to send when detecting that gas density transfinites;
Surveillance center, according to described gas exceeding limit signal, controls the power supply of electric power system cut-out to described charging equipment;
Wherein, to open the cover plate of wire connection cavity or the door closure of operating cavity of electric fixtures, file a request to Surveillance center, Surveillance center is to gas exceeding limit or have electric uncap locking device to send signal, and its electromagnetic mechanism action unlocks, and just can unblank after obtaining the authorization.
10. prevent a system for colliery livewire work and gas explosion, it is characterized in that, comprising:
Leak(age) test device near the supply line's end on-load switch being arranged on electric power system, for checking earth leakage protective reliability from a distant place;
Be arranged on the protective device on each charging equipment respectively;
Respectively with described protective device and the wired or wireless Surveillance center be connected of leak(age) test device, for controlling electric power system according to the result of distant place inspection earth leakage protective reliability, in case leak-stopping electric protection is lost efficacy, rear electric power system continued power supply, and carried out power supply control according to the alarm signal from described protective device to each charging equipment;
Connect each charging equipment via supply lines and receive the Coal Mine Power Distribution System of the control signal of described Surveillance center;
Wherein, described charging equipment is the switchgear with blocking device, and described protective device is the latch-up protection device be arranged on the blocking device of switchgear;
Wherein, described charging equipment is the equipment with wire connection cavity, and described protective device is the cover plate opening-closing state sensor be arranged on the cover plate of described wire connection cavity;
Wherein, described charging equipment is the equipment with wiring mouth, and described protective device is be arranged on the locking device on described wiring mouth;
Wherein, described protective device is the gas exceeding limit that is arranged on the wire connection cavity cover plate of charging equipment or operating cavity door closure or has electric uncap locking device.
11. systems according to claim 10, is characterized in that, described Surveillance center comprises: connect each protective device for receiving the communication interface of the alarm signal of its transmission; Connect controller or the processor of described communication interface, for the treatment of the alarm signal of the protective device that communication interface receives, and send corresponding control signal according to result to electric power system, to control the homework of supplying power of electric power system to corresponding charging equipment; Leak(age) test button, sends leak(age) test signal for start-up connector, and this signal sends to the leak(age) test device near the supply line's end on-load switch being arranged on electric power system via communication interface; And connect the input unit of described controller, display unit and memory respectively.
12. systems according to claim 10, is characterized in that, described leak(age) test device comprises: its one end is connected to the test for ground resistance of the arbitrary phase line of gauge tap mains side triple line; Be connected to the switch execution unit between the test for ground resistance other end and ground wire; Connect the control assembly for the make-break operation of gauge tap execution unit of Surveillance center; Control assembly and test for ground resistance are connected to the switch protection parts on the power line of colliery.
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