CN2081166U - Full-automatic protector for electronic transformer of neon lamp - Google Patents

Abstract

The utility model relates to a full-automatic protector for the electronic transformer of a neon lamp, comprising a multifunctional high-voltage pack and a sampling control circuit, wherein, the multifunctional high-voltage pack comprises a high-voltage output winding, a heat controlling tetrode and a bead eliminating device; the sampling control circuit comprises a sampling transformer, a rectifier filter, a voltage divider, a voltage stabilizing tube, controlled silicon, and a relay, When the load of a high-voltage transformer has an open circuit or over current or over voltage or over heat, the full-automatic protector for the electronic transformer of the neon lamp can cause the main machine to have power off or failure of oscillation immediately, playing the full-automatic protective function; the utility model has high speed of control starting, high safety but no appearance of pen fire; after the failure is excluded, the normal work of the utility model is automatically recovered; simultaneously, the utility model can eliminate the bead walking phenomenon of the neon lamp to cause the light emission to be stable.

Description

Full-automatic protector for electronic transformer of neon lamp

The utility model---the neon sign electron transformer full-automatic protection device belongs to the automatic safety device of high-tension transformer, particularly the protection of neon sign electron transformer.

The high-voltage load open-circuit protecting device of existing neon sign electron transformer is to adopt most advanced and sophisticated sparkover fusing fuse, the method of cutting off the electricity supply, though it is simple in structure, but have following shortcoming: (1) its responsiveness of cutting off the electricity supply is too slow, and the high heat burnout fuse that needs most advanced and sophisticated electrion to produce just can be cut off the electricity supply later on; (2) load open circuit and when producing high-voltage tip discharging, the naked light spark occurs if surrounding environment has imflammable gas, sets off an explosion and fire with regard to lighting easily.Even without imflammable gas, this high tag sparkover also burns out insulation board easily, and is very dangerous; (3) because neon sign electron transformer is installed in outdoor or eminence, it is very inconvenient to change fuse etc.; (4) to high-tension transformer overcurrent, overvoltage, overheatedly do not have a protective effect.

Purpose of the present invention is exactly in order to overcome above-mentioned shortcoming and the problem that existing neon sign electron transformer high-voltage load open-circuit protecting device exists; a kind of multi-functional neon sign electron transformer full-automatic protection device is provided; when the high-voltage load of transformer open circuit and high-tension transformer overvoltage, overcurrent occur or when overheated, can cut off the electricity supply automatically or the main frame failure of oscillation.After fault is got rid of, open power supply again, just recover operate as normal automatically.

The utility model is to realize by following structure technology scheme: this device is made up of multifunctional high pressure bag 1 and controlling of sampling circuit 2, and its interconnected relationship is the thermal control plate electrode E of the thermal control tetrode 5 in the multifunctional high pressure bag ₁, E ₂Be connected with the relay J of controlling of sampling circuit and anode, the control grid of controllable silicon SCR respectively.Wherein the multifunctional high pressure bag by high pressure output winding 4 in parallel one by two point electrode Q ₁, Q ₂And two thermal control plate electrode E ₁, E ₂The thermal control tetrode 5 that insulated enclosure is made, serial connection is made up of diode and the high-voltage capacitance bead elimination device of forming 6 that is in parallel, and becomes an integral body with the epoxy resin embedding; The controlling of sampling circuit connects diode D by high frequency sampling transformer M connection in series-parallel ₁And the rectifier filter D of capacitor C composition ₁C, potentiometer W, voltage stabilizing didoe D more successively are connected in series ₂, controllable silicon SCR, relay J form.The simple operation principle of this device is as follows: when multifunctional high pressure contracts out existing load open circuit, overvoltage arcing, and point electrode Q in the thermistor(-ter) ₁, Q ₂Just high-voltage tip discharging or high-tension transformer overcurrent occurs or when overheated, utilize thermal control plate electrode E in the thermistor(-ter) ₁, E ₂The elevated temperature deformation characteristic, make the thermal control plate electrode E that is separated from each other under the normal operating conditions ₁, E ₂Be in contact with one another, form short circuit, make the relay J action, make outage of neon sign electron transformer main frame or failure of oscillation; Simultaneously, when multifunctional high pressure contracts out existing overcurrent and overvoltage, from main frame sample relevant overcurrent, overvoltage signal, become direct current signal,, trigger voltage stabilizing didoe D again through potentiometer W dividing potential drop through rectifying and wave-filtering by high frequency sampling transformer M ₂, making the controllable silicon SCR conducting, the actuating of relay makes main frame outage or failure of oscillation.Above-mentioned two links connect each other, start to control making usefulness simultaneously, thereby play full-automatic protective effect.

The utility model compared with prior art has following advantage and effect: (1) contracts out existing overcurrent, overvoltage or when overheated, can both make main frame outage or failure of oscillation when neon sign electron transformer load open circuit and multifunctional high pressure, plays full-automatic protective effect.And the speed of starting to control is fast, can instantaneously promptly start to control; (2) this device is with the metal exposed parts of high pressure, therefore, and when load open circuit or other fault occurs and when starting to control, do not have naked light to occur, the security reliability height.After fault was got rid of, thermal control tetrode or controllable silicon SCR were recovered normal open-circuit working state, and neon sign electron transformer recovers operate as normal automatically; (3) because of this device has bead elimination device, that can eliminate neon light walks the pearl phenomenon, makes it luminous stable.(4) this device can also be used for the automatic protection of other high-tension transformer.

Further as follows to description of drawings below: Fig. 1 is a neon sign electron transformer full-automatic protection device operation principle block diagram.Fig. 2 is a multifunctional high pressure bag shape assumption diagram, and wherein (a) is front view; (b) be vertical view, among the figure: 5 are the thermal control tetrode; E ₁, E ₂Be the thermal control plate electrode; F ₁, F ₂Be spacer, it makes the multifunctional high pressure bag fix certain position and can not rotate; G ₁, G ₂Lead-out wire for high pressure output winding 4 can directly be connected with neon light tube.Fig. 3 is a multifunctional high pressure inclusion composition.Among the figure: 4 are high pressure output winding; 5 are the thermal control tetrode; 6 is bead elimination device; Q ₁, Q ₂Be thermistor(-ter) two point electrodes; E ₁, E ₂Be the thermal control plate electrode; G ₁, G ₂Lead-out wire for high pressure output winding.Fig. 4 is the controlling of sampling circuit theory diagrams.M is high frequency sampling transformer, N ₁, N ₂Input for high frequency sampling transformer M; D ₁Be rectifier diode; C is a filter capacitor; W is a potentiometer; D ₂Be voltage stabilizing didoe; SCR is a controllable silicon; J is a relay; 5 are the thermal control tetrode; Q ₁, Q ₂Be point electrode; E ₁, E ₂Be the thermal control plate electrode; A, the B point of A, B point and Fig. 3 is an identical point, and they are that thermistor(-ter) 5 is exported being connected in parallel a little of winding with high pressure.+ V is a DC power supply.

Existing a plurality of the device samples of inventor use through test, and good protection effect and security reliability are arranged.Its implementation method is as follows: at first making two ends with anti-insulating material respectively has an aperture, and interposition is equipped with glass tube or the earthenware or the flame retardant plastics shell of two apertures, a metal tip electrode of each sealing-in Q at the shell two ends ₁, Q ₂, the metal thermal control plate electrode E of an elevated temperature deformation of each little aperture apparatus of centre position ₁, E ₂, shell is sealed fully, make thermal control tetrode 5; Multifunctional high pressure bag employing ferrite core is made core, and high pressure output winding 4 adopts the flat winding coiling of multilayer single lines, and again by structure shown in Figure 3, thermal control tetrode 5 in the parallel connection behind the bead elimination device, is used an epoxy resin embedding one-tenth integral body as shown in Figure 2 on the serial connection; Second step was made transformer core with ferrite core, with the high frequency sampling transformer of certain transformation ratio (as 8:4) coiling M,, install behind the used components and parts of detection screening more then according to circuit draw PCB shown in Figure 4, and be connected with main frame and debug, just finish the enforcement of this device.

Claims (3)

1, a kind of neon sign electron transformer full-automatic protection device is characterized in that it is made up of multifunctional high pressure bag (1) and controlling of sampling circuit (2), and its interconnected relationship is the thermal control plate electrode E of the thermal control tetrode (5) in the multifunctional high pressure bag (1) ₁, E ₂Be connected with the relay J of controlling of sampling electrical equipment and anode, the control grid of controllable silicon SCR respectively.

2, by the described neon sign electron transformer full-automatic protection device of claim 1, it is characterized in that described multifunctional high pressure bag (1) by high pressure output winding (4) in parallel one by two point electrode Q ₁, Q ₂And two thermal control plate electrode E ₁, E ₂The thermal control tetrode (5) that insulated enclosure is made, serial connection are made up of diode and the high-voltage capacitance bead elimination device of forming (6) that is in parallel, and are become an integral body with the epoxy resin embedding.

3,, it is characterized in that described controlling of sampling circuit connects diode D by high frequency sampling transformer M connection in series-parallel by the described neon sign electron transformer full-automatic protection device of claim 1 ₁And the rectifier filter D of capacitor C composition ₁C, potentiometer W, voltage stabilizing didoe D more successively are connected in series ₂, controllable silicon SCR, relay J form.

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