CN201946950U

CN201946950U - Automatic explosion-proof device for glass breaking

Info

Publication number: CN201946950U
Application number: CN2010205694478U
Authority: CN
Inventors: 李文元
Original assignee: XI'AN ALLCANPOWER CO Ltd
Current assignee: XI'AN ALLCANPOWER CO Ltd
Priority date: 2010-10-19
Filing date: 2010-10-19
Publication date: 2011-08-24
Anticipated expiration: 2020-10-19

Abstract

The utility model discloses an automatic explosion-proof device for glass breaking. The surface of a piece of glass is provided with a layer of conductive film with small resistance or a thin lead wire is embedded in the glass; the conductive film or the thin lead wire is electrically connected with a control unit of a circuit board; an electric control unit module makes responses to a changing signal and controls a relevant energy supplying unit to cut off supplying. In the utility model, when the glass is cracked or broken, the automatic explosion-proof device can acquire relevant information by a sensor and then adopts the rescue measurement, thereby avoiding disasters.

Description

The glass breakage automatic explosion-proof device

Technical field:

The utility model relates to a kind of glassware anti-explosion safety device that is used for inflammable and explosive environment.

Background technology:

Glassware is with advantages such as its unrivaled good light permeability, cheap, easy moulding, be widely used in every field, comprise being used in the inflammable and explosive environment, as, the glass lamp shade of mine lighting light fixture, the glass of electrical control cabinet observation window etc. in the colliery, used.But for inflammable and explosive environment, the fragility of glassware but exists very big hidden danger, as: for ease of observing the ruuning situation of power consumption equipment, be everlasting and inlaying clear glass on the observation window of power consumption equipment, in case but glass breakage, will be in inflammable and explosive environment with appliance circuit or component exposure, the explosion-proof explosion separation structure of former electric equipment is destroyed, electrical equipment just at work may produce phenomenons such as contact contact sparking, and the flammable explosive gas that ignites causes catastrophic effect.

Summary of the invention:

The purpose of this utility model is, a kind of glass breakage automatic explosion-proof device is provided, and when glass breakage or fragmentation, gathers relevant information by control unit, takes the measure of suing and labouring then, the generation of the accident that averts a calamity.

The utility model is achieved in that

Glass surface has the less conducting film of one deck resistance or embeds thin wire in glass inside, inner " thin wire " that embeds of this conducting film or glass is electrically connected with the electric control unit module, the electric control unit module is with the resistance variations signal record of conducting film or thin wire, and the signal to this variation is made response, the energy feed unit that control is relevant, sever supply is averted catastrophe.

Described " conducting film " can be metal foil material or resistive layer slurry, chemistry, or vacuum technology plated film low electrical resistant material, other synthetic film low electrical resistant materials.The resistance value of conducting film is between 0.001 Ω～1M Ω.

Described " thin wire ", its material can be metal or conductive rubber or other synthetic low electrical resistant materials." thin wire " diameter is between 1 micron to 1 millimeter.

Operation principle of the present utility model is:

In case be in that glassware in this environment is subjected to external force factor and when breaking, because glass surface has the conducting film that resistance is little, ductility is little (or embedding thin wire in the glass), when glass breakage, conducting film (or thin wire) disconnects rapidly, the new resistance approach infinity that produces between film and the film (or the thin wire that disconnects).Corresponding perception unit is tackled the resistance signal of this variation and is made corresponding fast reaction, with circuit supply part fast shut-off, or sends cut-off signals for energy supply control part branch, implements to turn-off action fast.

Description of drawings

Fig. 1, implosion guard circuit theory schematic diagram

Fig. 2-1, conducting film are in the schematic diagram of glass face shield internal layer

Fig. 2-2, conducting film are in the outer field schematic diagram of glass face shield

Fig. 2-3, conducting film embed the schematic diagram in the glass

Fig. 3, the glass face shield upward view of conducting film is arranged

Fig. 4, the flat glass schematic diagram of conducting film is arranged

Fig. 5, the flat glass constructed profile of conducting film is arranged

Fig. 6, sensor cluster overall structure schematic diagram

Among the figure: the 1st, glass, 2 low-resistance conducting films, the 3rd, conductive rubber, the 4th, insulating sleeve, the 5th, driving power supply line, the 6th, the lead that is connected of conducting film or thin wire and control unit, the 7th, electric contact point, A electric control unit module.

Embodiment

Below in conjunction with accompanying drawing, narrate two embodiment, the utility model is described further.

Fig. 1 shows the circuit theory schematic diagram that the utility model is explosion-proof

Be in that in a single day glassware in this environment is subjected to external force factor and when breaking, conducting film disconnects rapidly, the new resistance approach infinity that produces between film and the film.Corresponding perception unit is tackled the resistance signal of this variation and is made corresponding fast reaction, with circuit supply part fast shut-off, or sends cut-off signals for energy supply control part branch, implements to turn-off action fast.

The automatic explosion-proof device that the glass lamp shade of embodiment 1, flame-proof mine LED tunnel lamp breaks

Fig. 2-1, Fig. 2-2, Fig. 2-3 show the diverse location of glass lamp shade upper conductive film 2 respectively, and the conducting film of Fig. 2-1 is positioned at the inner surface of glass lamp shade; Metal forming conducting film 2 is attached on the lamp shade glass, and the resistance value of conducting film is 0.001～1M Ω; The conducting film of Fig. 2-2 is positioned at the outer surface of glass lamp shade; The conducting film of Fig. 2-3 embeds glass inside.

Fig. 3 is a glass face shield upward view, and conducting film 2 is cross cloth on the glass of lampshade.

Figure 6 shows that the sensor cluster overall structure: when the lamp operate as normal of LED tunnel, the conducting film 2 on the glass lamp shade is low resistive state, the electric control unit operate as normal.When the glass lamp shade of LED tunnel lamp slight crack occurred or when broken, conducting film 2 ruptures by external force collision or temperature difference fusion, resistance is high resistance state.The signal of this variation passes to electric control unit through conductive rubber 3, sensor signal lines 4, and the integrated chip of control unit (as SG494 the 4th pin, SG3525 the 10th pin etc.) sends cut-off signals, and with the driving pulse shutoff of power tube, power transfer will be interrupted.The LED wick is cut off behind the power supply can not normally luminous (work), also causes flammable gas explosion in the surrounding enviroment with regard to producing electric spark again, has avoided the generation of disaster.

The automatic explosion-proof device of the glass breakage of embodiment 2 electrical control cabinet observation windows

Fig. 4 has shown flat glass and conducting film thereof, and plate glass is subjected to that external impacts is easier breaks, and conducting film is attached on the lamp shade glass, and the resistance value of conducting film is 0.001 Ω～1M Ω.

As shown in Figure 5: the glass of electrical control cabinet observation window is flat glass, and the glass breakage of electrical control cabinet observation window informs that automatically use mine lighting light fixture is similar in principle and the colliery.Difference is the plate glass of electrical control cabinet observation window, easier fragmentation, and its inner space is bigger, and the flammable explosive gas that inside is full of is more, endangers bigger.

Glass is owing to be subjected to external impacts in case break, and conducting film 2 ruptures, and resistance is high resistance state.The signal of this variation passes to electric control unit through conductive rubber 3, sensor signal lines 4, the integrated chip of control unit is (as SG494 the 4th pin, SG3525 the 10th pin etc.) send cut-off signals, the driving pulse of power tube is turn-offed, the control cubicle power supply unit is cut off behind the power supply can not normally luminous (work), also just cannot produce electric spark again and cause flammable gas explosion in the surrounding enviroment, the generation that averts a calamity.

Claims

1. glass breakage automatic explosion-proof device, it is characterized in that: there are less conducting film of one deck resistance (2) or the inner thin wire that embeds of glass in glass (1) surface, this conducting film or thin wire are electrically connected with the electric control unit module, the electric control unit module is made response to signal, and the energy that control is relevant is supplied with.

2. according to the described glass breakage automatic explosion-proof device of claim 1, it is characterized in that: said conducting film (2) is metal foil material or resistive layer slurry, chemistry or vacuum technology plated film low electrical resistant material; The resistance value of conducting film is between 0.001 Ω～1M Ω.

3. according to the described glass breakage automatic explosion-proof device of claim 1, it is characterized in that: said thin wire is metal or conductive rubber, and the thin wire diameter is between 1 micron to 1 millimeter.

4. according to the described glass breakage automatic explosion-proof device of claim 2, it is characterized in that: said conducting film (2) is the inner surface of glass, also can be the outer surface of glass.