Explosion-proof head lamp


F21L11 -
A42B1/24 - with means for attaching articles thereto, e.g. memorandum tablets, mirrors, lamps, insignia

 

(57) Abstract:

The invention relates to explosion-proof power sources. The lamp includes a housing with rechargeable batteries and a removable cover means to seal placed around the perimeter of the contact surface of the cover with the casing, connecting cord, headlight with bulb and the positive electrode to charge the battery, mounted in a through hole of the lamp housing. The positive electrode is made with a conical sleeve and a through hole in the lamp housing contains the tides and provided with a tapered, with the possibility of mating with the tapered surface of the bushing. Moreover, the seal means further comprises a suppressor made in the form of a labyrinth, which is located on the perimeter of the contact surface of the cover with the casing. This embodiment provides a reliable plamegate. 3 C.p. f-crystals, 3 ill.

The invention relates to an intrinsically safe power sources, in particular to the field of mining individual lighting equipment, and can be used in mining individual rechargeable lamps.

Known explosion-proof head lamp containing headlight with a lamp of the Directors (and.with. 1241009, CL F 21 L 11/00, 1963).

The lack of rechargeable lamp is the fact that the sealing means made in the form of fill battery with polyurethane foam. This fill eliminates the possibility of replacement of defective items, batteries and tools spark protection, i.e. the battery is absolutely unfit for re-use and repair.

Also known mining head lamp containing a housing with rechargeable batteries and a removable lid with means to seal placed around the perimeter of the contact of the cover with the casing. The lamp contains a connecting cord and headlight with bulb. Thus, in a through hole of the lamp housing fixed to the positive electrode designed to charge rechargeable battery (see passport 0.06.468.081 PS. Lamps shaft head CHS.5M.05, CHS.5-1M.05. the prototype of THE 12.016.5494-89).

A disadvantage of the known lamp is a low explosion. Used it to seal means located along the perimeter of the contact of the cover with the casing of the batteries, does not provide reliable fire protection. In the case of penetration of methane inside the casing and its fire there, flame, stearamide.

The essence of the proposed technical solution is that the explosion-proof head rechargeable lamp, which includes a casing with a battery and a removable lid with means for sealing and spotlight the positive electrode; in addition, the positive electrode is made with a conical sleeve. Through the hole in the headlamp housing contains the tides and provided with a tapered, with the possibility of mating with the tapered surface of the sleeve.

Moreover, the seal means further comprises a suppressor made in the form of a labyrinth, which is located on the perimeter of the contact surface of the cover with the casing and may be performed, for example, in the form of longitudinal protrusion on the casing and groove on the removable cover with the possibility of their mates. In addition, at the bottom of the groove labyrinth suppressor posted by plastic or elastic stopper, and on the bottom of the casing with its outer side, fastened the safety sole, made for example in the form of a steel plate.

The proposed set of distinctive features allows you to learn additional positive effect, in fact, in the case of penetration of methane into the housing of the rechargeable batteries or lights and oshore will happen. When the movement of hot gases through the maze with overcoming the shutter, which increases the transit time of the gas due to its inhibition, the hot gas has time to cool down, and the flames go out. In this case, the geometric dimensions of the maze and the conical surfaces of the sleeve and the hole with the tides in the headlamp housing is selected such as to ensure reliable cooling and extinguishing the flame. In addition, due to the tapered surfaces and the gas pressure in the lamp, in case of fire there is methane, is rasklinivanie conical sleeve and a sharp reduction of the gaps, which also contributes to the quenching of flame.

In Fig. 1 shows a General view of the explosion-proof head rechargeable lamp; Fig. 2 depicts the labyrinth flash Hider with the bolt in cross section; Fig. 3 - lamp headlight (longitudinal section).

Explosion-proof head lamp contains Faro 1, in case 2 where the incandescent lamp 3 and the positive electrode 4 with a conical sleeve 5. The tapered hole has tides 6, increasing the height and the lateral surface of the cone. Headlight 1 also contains a reflector 7 and the lens ring 8 with the protective glass 9, and is connected via a connecting cord 10 with a cover 11 and a casing 12 posted suppressor 14, made in the form of a labyrinth 15 with the bolt 16. The cover 11 also posted spark protection device 17.

In the case of penetration into the cover 11 explosion-methane mixture and fire it from a random sparks inside the battery there is an instant flash with the formation of the flame and increases the pressure. Hot gases trying to escape from under the cover 11 through the maze of 15 and cooled. In this case, the geometric dimensions in accordance with the experimental data are selected in such a way as to ensure reliable cooling of the gases and the extinguishing of the flame within the flame arrester 14. If methane flash will occur inside the headlamp 1, the pressure generated hot gas presses the conical sleeve 5 to the tapered hole due to tides 6 has the necessary length of the forming cone and thereby provides reliable flame extinction with the passage of gases through the gap. However, due to the capillary properties of the gap, the passage of the gas it slows down sharply, which also contributes to the rapid quenching of flame. Sole 13 protects the bottom of the casing 12 from abrasion.

The positive effect is that reliable plamegate when the ignition of methane and coal dust.

1. Explosion-proof head lamp containing a housing with rechargeable batteries and a removable cover means to seal placed around the perimeter of the contact surface of the cover with the casing, connecting cord, headlight with bulb and the positive electrode to charge the battery, mounted in a through hole of the lamp housing, wherein the positive electrode is made with a conical sleeve and a through hole in the lamp housing contains the tides and provided with a tapered, with the possibility of mating with the tapered surface of the sleeve and the seal means further comprises a suppressor made in the form of a labyrinth, which is located on the perimeter of the contact surface of the cover with the casing.

2. The lamp under item 1, characterized in that the labyrinth is made in the form of a longitudinal protrusion on the casing and groove on the removable cover with the possibility of their mates.

3. The lamp on the PP. 1 and 2, characterized in that at the bottom of the groove labyrinth suppressor posted by plastic or elastic shutter.

4. The lamp under item 1, characterized in that on the bottom of the casing with the outer side of the fixed safety sole, made for example in the form with

 

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