CN2058428U - Explosion-proof local ventilator combined controlling box - Google Patents
Explosion-proof local ventilator combined controlling box Download PDFInfo
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- CN2058428U CN2058428U CN 88219076 CN88219076U CN2058428U CN 2058428 U CN2058428 U CN 2058428U CN 88219076 CN88219076 CN 88219076 CN 88219076 U CN88219076 U CN 88219076U CN 2058428 U CN2058428 U CN 2058428U
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- power supply
- control
- transformer
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- biogas
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Abstract
The utility model relates to an explosion-proof local fan blower combined control box which comprises a box body, a probe head and an electron protective circuit. The utility model is suitable for controlling and protecting a local fan blower, switching off electricity of biogas overrun, latching, latching wind power with time delay, displaying biogas concentration and alarming, belonging to the technical field of an electric appliance. The utility model completes five functions of controlling and protecting the local fan blower, switching off electricity of biogas overrun, latching, and latching wind power with time delay through an integrated electronic circuit.
Description
A kind of explosion-proof type secondary fan combination control cabinet (claiming the portable blower control cabinet with doffing) is applicable to the protection and the control of secondary fan under the coal mine, belongs to appliance field.
At present, during the underground mining of colliery,, be defined on the corresponding work face and must realize the locking of wind-powered electricity generation biogas, i.e. No. 424 literary composition of (86) coal skill word " wind-powered electricity generation biogas block sytem technical specification " institute's requirement for production safety.Prior art generally is with a universal switch, two to three biogas detect cutoff instrument, one typhoon electricity time-delay relay and two to three junction boxes are formed electrical control system and are realized the locking of above-mentioned wind-powered electricity generation biogas, in this system, the effect of universal switch is that portable blower is realized running, control; The effect that biogas detects cutoff instrument is to detect biogas concentration and when biogas concentration surpasses safety value system is realized biogas locking, control; The effect of wind-powered electricity generation time-delay relay is after portable blower work, by time-delay the work plane power switch is realized lock between air and electricity control; The effect of junction box is to make intrasystem electrical control equipment guarantee under the prerequisite of explosion-proof performance that requirement in accordance with regulations carries out wiring.
The deficiencies in the prior art part is: by the universal switch that disperses, detect the task that system that single function explosion-proof electric apparatuses such as cutoff instrument, relay form bears these wind-powered electricity generation biogas lockings, required equipment is many, wiring is complicated, the mode difficulty is installed, especially can not realize to work when work plane surpasses safety value with near the biogas concentration in portable blower infield and, having only concentration to reach the requirement that safety value also could be worked through artificial unlocking by locking.So the existing system fault rate still, function is incomplete.
The objective of the invention is: invent a kind of portable blower control cabinet; closing transfinite outage locking, four functions of wind-powered electricity generation delay lock of control, protection, biogas is one; replace the discrete item system of former usefulness that the cipher lock type closedown structure is set simultaneously; drop to safety value after special messenger's unlocking when being implemented in super concentration; can avoid like this slipping up and causing an explosion accident; both can reach the necessary wind-powered electricity generation biogas blocking function of safety in production, can save various wiring and debugging link again.
Design a kind of portable blower control cabinet, surface of shell adopts beading or weldering muscle shell arch form structure, inside be divided into main chamber 7. with wire connection cavity 10., all electrical equipment and line security be contained in main chamber 7. in, main chamber covers and is provided with the rectangle observation port.Secondary fan, detection probe etc. one answers the electric wire of equipment all to enter on wire connection cavity 10. interior wiring terminal , the .Its structure as shown in Figure 1.Be provided with electrical equipment core frame in the main chamber 4., all electrical equipment is installed on the electrical equipment core frame.7. main cavity is equipped with wiring terminal , , control patchboard with wire connection cavity in 10., wire connection cavity 10. both sides be provided with introducing device 8., 9.,
The electrical equipment that 4. electrical equipment core frame is gone up mainly contains: the commutation diaphragm leave close plug fuse 3., the glass bulb fuse
Electromagnetic contactor 2., control transformer
Electronic relay 5., control button
Selector switch , , essential safe type voltage-stabilized power supply
Below in conjunction with embodiment the principle of the present invention and electronic circuit further is illustrated:
Fig. 1 is a body structure schematic diagram of the present invention.
Fig. 2 is an electronic-circuit diagram of the present invention.
This control cabinet housing adopts rectangle, and in order to reinforce casing intensity, surface of shell has beading and weldering muscle.Inside be divided into main cavity 7. with 10. two large divisions of wire connection cavity, and adopt the outer casing with cramp device of snap-action, main chamber covers and is provided with indicator lamp rectangle observation port.4. main cavity is equipped with electrical equipment core frame in 7., and whole electrical equipment are housed above.Electrical equipment core frame 4. with main cavity connecting 7. for not landing the 6. fixing two slide bar type drawing structures of bolt 1., wire connection cavity covers
Has waterproof construction, two groups of (three one group) 660V level main electrical scheme terminal , one group of (two) 660V level auxiliary connection terminal
And control patchboard is installed on the separate space plate of main cavity and wire connection cavity.Wire connection cavity 10. be provided with the turnover of two groups of power supplys with cable entry 8.,
9. one group of cable entry that the control portable blower is used (is determined) cable entries that transmission input and output signal is used by the user more than three groups
Electrical equipment and effect that 4. electrical equipment core frame is gone up are: conversion separation switch
Reversing switch as insulating power supply and double as when non-loaded; RLI series helix fuse is 3. as the short-circuit protection of major loop; The glass bulb fuse
Short circuit and overload protection arrangement as control transformer; CJ20 series electromagnetic contactor is 2. as deciliter gauge tap in portable blower loop; Control transformer
Provide 36V level low-tension supply to each control protection loop; 5. JDK 30 serial mining electronic relays act on is Comprehensive Control and the protection that realizes whole system.Control button ,
Respectively as latch buttons, starting button, stop button and releasing button, selector switch is used to select the closedown mode that adapts with controlled power switch pattern, and it still is the emergency mode that selector switch is used to select normal operation mode; DHP 11 serial essential safe type voltage-stabilized power supplies
Working power as essential safe type circuit and external biogas detector.Electronic relay has beacon lamp that six light emitting diodes constitute contents such as display system, power supply, running and accident respectively in 5..
Below in conjunction with Fig. 2 in detail portable blower control cabinet electrical principle is described in detail.At portable blower control cabinet connecting system and pass under the prerequisite of power supply, after isolating switch HG closes, control transformer BKI promptly obtains power supply, and then makes intrinsically safe power supply WY1, WY2 work and to control loop net, electronic relay JDK and the power supply of external biogas detector.When detecting the normal and certain hour of delaying time (can regulate) of the obtained validation of information portable blower case of link according to each in 3～15 seconds, electronic relay JDK promptly exports the instruction of to turn round, establish relay J 1 adhesive in making, the portable blower case promptly is in treats duty.At this moment, can unlocking if receive running instruction that operating personnel send by J3-5, J3-6 by starting button AQ or by collection control, remote control on the spot or after taking the necessary measures, send by the special messenger, recover running instruction (back two kinds of situations need through having the identification link SB recognition and verification of recognition code).Portable blower circuit controls relay J O1 adhesive, and then make the contactor C adhesive of portable blower loop, do not transfinite as if work plane biogas concentration after the C adhesive, then send lock between air and electricity and remove instruction by time-delay certain hour (5～30 seconds) electronic relay JDK, in establish relay J 2 adhesives, make lock between air and electricity control relay JO3 adhesive, and then make the work plane power switch send electricity or be in and to send electricity condition.If electronic relay JDK just thinks that system is undesired before the portable blower work, then export the instruction of can not turning round, make relay J 1 separately, the portable blower case promptly is in disabled state; If the portable blower case runs into all unusual (overcurrents of considering in the portable blower case work running rule in the course of the work; short circuit; the phase failure; earth leakage; checkout gear damages; biogas transfinites); after then mining electronic relay J DK determines by above-mentioned respective detection link; promptly recall and to turn round instruction or lock between air and electricity releasing instruction and export to turn round instruction or lock between air and electricity instruction; make relay J 1 and J2 simultaneously separately or only make relay J 2 separately; end portable blower case work and, whole system is implemented safeguard protection the in addition locking or of work plane power switch only with the in addition locking of work plane power switch.Adjuster PD is the annex of electronic relay JDK, its main body electricity is the resistance divider of a band rectification link, its effect is with current transformer LH1 and the different voltages of LH2 taking-up and portable blower motor and the current signal under the power, be adjusted to the d. c. voltage signal of unified amplitude, even (2.2KW～28W) has obtained versatility to electronic relay JDK in suitable scope.The loop that contact C-4, JO1-2, JO2-1 form is that the ground connection locking detects the loop, and its effect is when portable blower is not started shooting, and promptly leading insulation to system detects; In order to guarantee link because of the high pressure back-emf of introducing generation in the shutdown of portable blower motor does not damage electric relay JDK, JO2-1 is timing closing.Delay function is to realize by having instantaneous adhesive, delay time the electronic delay circuit SY that separates (time is 2 ± 1 seconds).
Electric connecting relation of the present utility model is: link to each other with the isolating switch inlet side for the one group of main electrical scheme terminal that connects power supply, plug fuse is serially connected in isolating switch and goes out to hold with A.C. contactor The end A, C mutually in, A.C. contactor goes out end and links to each other with another group main electrical scheme end that is used for wiring, two inlet sides of transformer are attempted by plug fuse and go out end, and the glass bulb fuse is serially connected in plug fuse RL2 and goes out on end and the transformer in the inlet side; Power supply two inlet sides of relay link to each other with voltage-stabilized power supply scene 2 end same polarity; J1 links to each other with lower end in the auxiliary reclay JO1 coil, and J2 links to each other with the end that goes out in the auxiliary reclay JO2 coil; Button with
Being serially connected on the control transformer end after the series connection goes out end with auxiliary reclay JO1 coil and joins again; ButtonBe serially connected in the output and ac contactor coil inlet side of transformer button
Be serially connected in the positive inlet side of voltage-stabilized power supply 24V output and relay power; The selector switch string is in the Chang Kaiduan of auxiliary reclay JO2 closed contact and auxiliary connection end, and it is in parallel that selector switch and relay include contact J1, J2; Voltage-stabilized power supply two inlet sides and control transformer scene 2 end also connect, three go out end respectively with patchboard in binding post J3-0, J3-1, J3-4 link.
The system that the present invention and prior art form compare have that volume is little, in light weight, function is complete, cost is low, wiring is simple, easy for installation, a little repair, the advantage such as reliable, especially be down to again just often in that biogas concentration is extraordinary, the instruction that the affirmation fault that can only be sent by operating personnel disappears could unlocking function, the level of further raising Safety of Coal Mine Production is played an important role.
Claims (3)
1. an explosion-proof type secondary fan makes up control cabinet, be applicable to that transfinite outage locking, wind-powered electricity generation delay lock and biogas concentration of the control of secondary fan under the coal mine and protection, biogas shows and reports to the police, be made up of casing, probe, inner integrated electronics protection circuit, it is characterized in that: casing is a shell arch form scope of freedom structure; The case face has weldering muscle and beading; Casing is divided into main cavity and wire connection cavity; Main chamber covers and is provided with the rectangle observation port, and electrical equipment and circuit are installed in the main chamber; Electrical equipment core frame is arranged in the main cavity; Electrical equipment core frame is not by landing spiral shell inspection fixing two slide bar type drawing structures and main cavity connection; Main electrical scheme terminal, shop adjuvant grafting line terminals, control patchboard are installed on the separate space plate: the one group of main electrical scheme terminal that is used to connect power supply links to each other with the isolating switch inlet side, plug fuse be serially connected in A, C that isolating switch goes out end and A.C. contactor inlet side mutually in, A.C. contactor goes out end and links to each other with another group main electrical scheme end that is used for wiring, two inlet sides of transformer are attempted by plug fuse and go out end, and the glass bulb fuse is serially connected in plug fuse RL
2Go out on end and the transformer in the inlet side; Power supply two inlet sides of relay link to each other with voltage-stabilized power supply scene 2 end same polarity; J
1With auxiliary reclay Jo
1Lower end in the coil links to each other, J
2With auxiliary reclay Jo
2The end that goes out in the coil links to each other; Button 15 goes out end and auxiliary reclay Jo with being serially connected in after 18 connect again on the control transformer
1Coil goes out end and joins; Button 23 is serially connected in the output and ac contactor coil inlet side of transformer, button 24 is serially connected in voltage-stabilized power supply 24V output and the positive inlet side of relay power, and selector switch (13) is gone here and there at auxiliary reclay Jo
2The Chang Kaiduan closed contact and the auxiliary connection end in, selector switch 14 includes contact J with relay
1, J
2In parallel; Voltage-stabilized power supply two inlet sides and control transformer scene 2 end also connect, three go out end respectively with patchboard in prap J
3-0, J
3-1, J
3-4 link.
2. control cabinet according to claim 1 is characterized in that: two set of connections terminals are arranged, a patchboard in the wire connection cavity.
3. control cabinet according to claim 1.It is characterized in that: the voltage-stabilized power supply on the electrical equipment core frame is an essential safe type voltage stabilizing electrical equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88219076 CN2058428U (en) | 1988-05-24 | 1988-05-24 | Explosion-proof local ventilator combined controlling box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88219076 CN2058428U (en) | 1988-05-24 | 1988-05-24 | Explosion-proof local ventilator combined controlling box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2058428U true CN2058428U (en) | 1990-06-20 |
Family
ID=4851460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88219076 Withdrawn CN2058428U (en) | 1988-05-24 | 1988-05-24 | Explosion-proof local ventilator combined controlling box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2058428U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083982A (en) * | 2017-03-24 | 2017-08-22 | 中国恩菲工程技术有限公司 | Analyze quo of local Fan for Mine and analysis mining partial ventilating system |
| CN109236343A (en) * | 2018-09-26 | 2019-01-18 | 中蓝长化工程科技有限公司 | A kind of heading end pressure pumping switching positive draft method |
-
1988
- 1988-05-24 CN CN 88219076 patent/CN2058428U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083982A (en) * | 2017-03-24 | 2017-08-22 | 中国恩菲工程技术有限公司 | Analyze quo of local Fan for Mine and analysis mining partial ventilating system |
| CN109236343A (en) * | 2018-09-26 | 2019-01-18 | 中蓝长化工程科技有限公司 | A kind of heading end pressure pumping switching positive draft method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |