CN2308196Y - Short-circuit protection device without dangerous spark miner's lamp - Google Patents
Short-circuit protection device without dangerous spark miner's lamp Download PDFInfo
- Publication number
- CN2308196Y CN2308196Y CN 97228541 CN97228541U CN2308196Y CN 2308196 Y CN2308196 Y CN 2308196Y CN 97228541 CN97228541 CN 97228541 CN 97228541 U CN97228541 U CN 97228541U CN 2308196 Y CN2308196 Y CN 2308196Y
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- CN
- China
- Prior art keywords
- short
- miner
- circuit protection
- lamp
- coil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The utility model relates to a short-circuit protection device for miner's lamps without dangerous sparks, comprising a power supply E, a self-holding relay main coil J < 1 >, a normal close node J, a switch K, and the miner's lamp, wherein, self holding coils J < 2 > are connected in parallel on both ends of the self-holding relay main coil J < 1 >, and at least one protective element D is connected in parallel on both ends of the self holding coil J < 2 >. The short-circuit protection device for miner's lamps without dangerous sparks has the advantages of novel structure and safety. The short-circuit sparks and dangerous sparks at a circuit loop break point are eliminated. The safe operation of the miner's lamps is ensured.
Description
The novel mine lamp protective device that belongs to of this employing.
Chinese patent 93228470.1 proposes a kind of mine lamp short-circuit protection electromagnetic relay device.This device can be when mine lamp be short-circuited timely cutting-off of short-circuit electric current, avoid causing gas explosion in the mine because of bigger short circuit current spark takes place.After short trouble was eliminated, relay was still kept adhesive, wants the original operating state of recovery and protection device, need disconnect ore light button K, self-insurance this moment main coil J
1Outage, normally closed contact J closure is because of self-insurance main coil J
1Inductance value quite big, produce higher induced potential, spark energy is quite high, may cause gas explosion.
The purpose of this utility model provides a kind of mine lamp protective device that does not have dangerous spark.
Main feature of the present utility model is at mine lamp lock-up relay main coil J
1On, holding coil J in parallel
2, at holding coil J
2On protective element D in parallel at least.
The utility model novel structure, safe and reliable, eliminated the dangerous spark of short-circuit spark and circuit gap, guaranteed the safe handling of mine lamp.
Accompanying drawing is a schematic diagram of the present utility model.
Below in conjunction with accompanying drawing in detail the utility model is described in detail.This device is for no dangerous spark relay system protective device, by the main coil J of overcurrent sticking relay
1(the line footpath is thick, the number of turn is few) also passes through normally closed contact J and holding coil J
2(the thin number of turn in line footpath is many) parallel connection.The sizable holding coil J of inductance value
2The two ends parallel connection protective element silicon diode.Also can piezo-resistance in parallel, capacitor, zener be as protective element.Be serially connected with then in the mine lamp loop and battery E, lamp holder switch K and bulb constitute the loop.During as Fig. 1 mine lamp operate as normal and charging, the closed formation of not adhesive of relay normally closed contact J path.Loop current heightens when mine lamp is short-circuited.When electric current greater than 7 ampere-hours, relay J
1Adhesive (instantaneous), normally closed contact J disconnects to eliminate the danger of short-circuit spark.Because of holding coil J
2Go here and there in the loop.Keep the relay adhesive, this coil line is very thin, and the number of turn is many again, so D.C. resistance can reach 85 ohm, short circuit current can be limited in below 50 milliamperes.After short trouble was eliminated, relay was still kept adhesive, wants the original operating state of recovery and protection device, need disconnect lamp holder switch K, holding coil outage this moment, its normally closed contact closure.Problem just occurs in and takes place again after short fault is eliminated that above-mentioned loop disconnects or any a part of fault of circuit when disconnecting; because of the suitable main point of holding coil inductance value produces higher induced potential; if unprotect element shunting in parallel with it; then the spark energy of circuit gap is quite high, may cause gas explosion.Protective element D and energy-storage travelling wave tube holding coil J have been adopted for this reason
2Parallel connection has reduced induced potential, has eliminated the dangerous spark of circuit gap, has guaranteed the safe handling of mine lamp.
This device is sealed in to be moulded in the shell, places in the lamp lid, and an end links to each other with battery electrode column, normally closed contact closure in the circuit when other end links to each other (positive and negative terminals of noting protector can not connect instead) this device operate as normal with lamp line, and contact resistance is very little, main coil J
1D.C. resistance is also very little; so the direct current pressure drop of protector is also very little; substantially do not influence the charge and discharge efficient of mine lamp; reached purpose of energy saving; this device also has double protection functions in addition, has overcome the generation of the two subsidiary risk sparks that general electromagnetic type protector causes because of the energy-storage travelling wave tube inductance coil.Guaranteed the safe handling of mine lamp.
Claims (3)
1, a kind of no dangerous spark mine lamp short-circuit protection comprises power supply E, lock-up relay main coil J
1, normally closed node J, K switch, mine lamp, it is characterized in that also comprising and be connected in lock-up relay main coil J
1On holding coil J
2, at least one protective element D also is connected in holding coil J
2On.
2, by the described no dangerous spark mine lamp short-circuit protection of claim 1, it is characterized in that said protective element D is silicon diode or piezo-resistance or electric capacity.
3, by the described no dangerous spark mine lamp short-circuit protection of claim 1, it is characterized in that said holding coil J
2Diameter than lock-up relay main coil J
1Diameter is thin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228541 CN2308196Y (en) | 1997-10-16 | 1997-10-16 | Short-circuit protection device without dangerous spark miner's lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228541 CN2308196Y (en) | 1997-10-16 | 1997-10-16 | Short-circuit protection device without dangerous spark miner's lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2308196Y true CN2308196Y (en) | 1999-02-17 |
Family
ID=33941676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97228541 Expired - Fee Related CN2308196Y (en) | 1997-10-16 | 1997-10-16 | Short-circuit protection device without dangerous spark miner's lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2308196Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468735A (en) * | 2018-12-29 | 2019-03-15 | 四川省玻纤集团有限公司 | A kind of the woven fabric system and its woven fabric method of basalt fiber cloth |
-
1997
- 1997-10-16 CN CN 97228541 patent/CN2308196Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468735A (en) * | 2018-12-29 | 2019-03-15 | 四川省玻纤集团有限公司 | A kind of the woven fabric system and its woven fabric method of basalt fiber cloth |
| CN109468735B (en) * | 2018-12-29 | 2023-09-22 | 四川省玻纤集团股份有限公司 | Basalt fiber cloth weaving system and basalt fiber cloth weaving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |