CN203250718U - Electrode applied to high voltage gas discharge lamp - Google Patents
Electrode applied to high voltage gas discharge lamp Download PDFInfo
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- CN203250718U CN203250718U CN 201320243473 CN201320243473U CN203250718U CN 203250718 U CN203250718 U CN 203250718U CN 201320243473 CN201320243473 CN 201320243473 CN 201320243473 U CN201320243473 U CN 201320243473U CN 203250718 U CN203250718 U CN 203250718U
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- spring
- electrode
- voltage gas
- plug
- gas discharging
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Abstract
The utility model relates to an electrode applied to a high voltage gas discharge lamp. The electrode is composed of a core rod and a spring which is connected with the core rod. The core rod is composed of a head stretching part, a fixation spring part and a welding part from front to back. The spring comprises a spring turning head, a spring loose winding inner layer, a spring neck and a spring outer layer, wherein the spring turning head, the spring loose winding inner layer and the spring neck are connected in turn, and the spring outer layer is arranged outside the spring turning head and the spring loose winding inner layer. Compared with the prior art, the electrode provided by the utility model has the advantages of strong controllability, flexible technology, optimized process, improved efficiency, strong reliability, prolonged service life and the like.
Description
Technical field
The utility model relates to a kind of electrode for high-voltage gas discharging light, especially relates to a kind of electrode for high-voltage gas discharging light.
Background technology
High-voltage gas discharging light mainly is comprised of electric arc tube, support, seal wire, lamp holder etc., wherein electrode is the core of electric arc tube, it has conclusive impact to the performance of gaseous discharge lamp, and the damage of majority of gas discharge lamp all is to cause because of the variation of electrode and inefficacy.And the characteristic of electrode depends primarily on the electronic emission material that it adopts.
The current density of high-voltage gas discharging light is high, and the anticathode bombardment of charged particle is stronger, and the working temperature of negative electrode is very high, and the sputter of emissive material is also very serious.Therefore, high-voltage gas discharging light can not adopt alkaline earth oxide as emissive material, can not lay in emissive material with coiled filament formula structure, and adopt zirconates, tungstates, rare earth oxide as emissive material, lay in emissive material with the electrode of the double-layer spiral formula structure of thick tungsten filamen coiling as carrier.
Double spiral electrode is close and inside and outside close around two kinds of structures outside interior the dredging substantially at present.Close structure electrode outside interior the dredging, although can store the emissive material of capacity, but because internal layer is identical with outer length, therefore the internal diameter of spring and the diameter of plug can only adopt interference fits, must process first plug during production, and then spring winding, when assembling, both adopt manual punching out mode, the shortcoming such as the process-cycle is long, production efficiency is low, electrode fastness consistency is poor.Inside and outside close around structure electrode, owing to the mutual gapless of spring, can not store the emissive material of capacity, can accelerate the tungsten evaporation rate of electrode itself, cause the electric arc tube blackout.
The utility model content
The purpose of this utility model is exactly to provide the electrode that is used for high-voltage gas discharging light that a kind of controllability is strong, can improve useful life for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of electrode for high-voltage gas discharging light is comprised of plug and the spring that is connected on the plug,
Described plug is peak with heading part, fixing spring part and welding portion from A-P,
Described spring comprises that successively the spring that connects turns over head, spring and dredges around internal layer, spring neck and be arranged on spring and turn over head and spring and dredge around the spring in the internal layer outside is outer and form.
Described plug length is 5～20mm, and diameter is 0.4～1.5mm.
The length of the peak with heading part of described plug is 0～2mm.
The welding portion of described plug connects niobium pipe or molybdenum sheet.
Described spring is partly located through the fixing spring that transition, mistake win or matched in clearance are connected to plug.
Described spring is the spring that the tungsten filament of diameter 0.15～0.8mm is made.
Described spring turns over head, the thin structure that consists of close-thin-Mi around internal layer, spring neck of spring by spring.
It is 0.05～0.8mm that described spring is dredged around the loose gap of internal layer.
The electrode that is used for high-voltage gas discharging light can adopt the mode of laser welding, resistance welded or manual punching out to assemble.
Plug peak with heading end face contacts with electric arc during electrode work, the heat that this moment, Ions Bombardment and gas conductance imposed on it can be transmitted to the electrode rear portion soon by plug, spring is gone out radiation of power unnecessary on the electrode, the temperature of emission layer just can not be too high, emitting material just can not consume too quickly, makes electrode maintain correct working temperature.
For avoiding electric arc directly to contact with electronic emitting material, cause the rapid evaporation of emitting material, emitting material is stored between the loose part of spring internal layer or spring and the plug.The electronic emitting material that is stored in here constantly provides metallic atom to the monoatomic layer that forms in electrode tips by course of reaction, remedying the loss that electrode tips barium in the course of the work causes because of evaporation and sputter. additional speed is very important, if the speed of replenishing is less than wear rate, barium atom on electrode tip just reduces gradually, so that performance drops to the level of pure tungsten electrodes, and cathode fall increases, the positive ion bombardment aggravation, the tungsten evaporation causes the tube wall blackout; If the speed of replenishing then just forms the polyatom thin layer of barium greater than wear rate on electrode tip, this is equivalent to the situation of blunt barium, and at this moment much bigger during the monatomic thin layer of evaporite ratio of barium, it is too fast that the result gets the emissive material loss.Therefore, in order to prolong the life-span of lamp, the temperature at the temperature of control electrode point and storage emissive material place carefully so that the additional speed of barium and loss rate equation, adopts close-dredge-electrode that the spring making of Mi structure obtains well solved above-mentioned technical problem.Compared with prior art, the utlity model has following advantage:
(1) controllability is strong: the internal layer spring is close-dredge-and the design of Mi, the spacing of loose part can design as required, stores an amount of emissive material, close loss around partly preventing emissive material.
(2) technique is flexible: the internal layer spring has increased the assembling mode of electrode than the design of outer spring length, both can adopt manual punching out mode, more is to adopt welding manner (such as electric resistance welding, Laser Welding etc.).
(3) process optimization: adopt welding manner to make the internal diameter of spring needn't depend on the actual diameter of plug, can change to matched in clearance from interference fits, but spring and plug parallel production shorten production procedure.
(4) efficient improves: adopt the assemble welding mode to be doubled and redoubled than manual punching out mode efficient.
(5) reliability is strong: adopt the assemble welding mode to guarantee the electrode fastness by regulating welding parameter (electric current, voltage, weld time etc.), avoid spring to come off and cause inefficacy.
(6) Service life: an amount of emissive material, slowed down the evaporation rate of electrode own and improved the life-span.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of plug;
Fig. 3 is the structural representation of spring.
Among the figure, 1 for plug, 11 for peak with heading part, 12 for the fixing spring part, 13 for welding portion, 2 for spring, 21 for spring turn over head, 22 for spring dredge around internal layer, 23 for spring neck, 24 be the spring skin.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
A kind of electrode for high-voltage gas discharging light, its structure are comprised of plug 1 and the spring 2 that is connected on the plug 1 as shown in Figure 1, and spring 2 can adopt transition, cross and win or the mode of matched in clearance is connected with plug 1.The structure of plug 1 is peak with heading part 11, fixing spring part 12 and welding portion 13 from A-P as shown in Figure 2.Plug 1 can be selected the tungsten filament of diameter between 0.4～1.5mm, and the length machining control of plug 1 is between 5～20mm, and wherein, the length of peak with heading part 11 can be controlled at 0～2mm as required, and welding portion 13 connects niobium pipe or molybdenum sheet.The structure of spring 2 as shown in Figure 3, comprise successively that the spring that connects turns over 21, spring dredge around internal layer 22, spring neck 23 and be arranged on spring turn over 21 and the spring outer 24 dredged around internal layer 22 outsides of spring form.Spring 2 is connected to fixing spring part 12 places.Spring 2 is selected the tungsten filament of diameter between 0.15～0.8mm to make and is obtained, and spring is dredged can be designed to different spacings as required around internal layer 22.Loose gap can be between 0.05～0.8mm, and it is fixed that actual conditions need according to the spring string diameter.The electrode that is used for high-voltage gas discharging light can adopt the mode of laser welding, resistance welded or manual punching out to assemble.Plug 1 and spring 2 assemble by welding manner in the present embodiment, the follow-up gap portion that spring is dredged around internal layer 22 and spring 2 and plug 1 by the vacuum-sintering mode stores an amount of emitting material, in order to remove the emitting material of electrode exposed part, can process by the mode of ball milling or wiping during this time.
Plug peak with heading end face contacts with electric arc during electrode work, the heat that this moment, Ions Bombardment and gas conductance imposed on it can be transmitted to the electrode rear portion soon by plug, spring is gone out radiation of power unnecessary on the electrode, the temperature of emission layer just can not be too high, emitting material just can not consume too quickly, makes electrode maintain correct working temperature.
For avoiding electric arc directly to contact with electronic emitting material, cause the rapid evaporation of emitting material, emitting material is stored between the loose part of spring internal layer or spring and the plug.The electronic emitting material that is stored in here constantly provides metallic atom to the monoatomic layer that forms in electrode tips by course of reaction, remedying the loss that electrode tips barium in the course of the work causes because of evaporation and sputter. additional speed is very important, if the speed of replenishing is less than wear rate, barium atom on electrode tip just reduces gradually, so that performance drops to the level of pure tungsten electrodes, and cathode fall increases, the positive ion bombardment aggravation, the tungsten evaporation causes the tube wall blackout; If the speed of replenishing then just forms the polyatom thin layer of barium greater than wear rate on electrode tip, this is equivalent to the situation of blunt barium, and at this moment much bigger during the monatomic thin layer of evaporite ratio of barium, it is too fast that the result gets the emissive material loss.Therefore, in order to prolong the life-span of lamp, the temperature at the temperature of control electrode point and storage emissive material place carefully so that the additional speed of barium and loss rate equation, adopts close-dredge-electrode that the spring making of Mi structure obtains well solved above-mentioned technical problem.
Claims (8)
1. an electrode that is used for high-voltage gas discharging light is characterized in that, this electrode is comprised of plug and the spring that is connected on the plug,
Described plug is peak with heading part, fixing spring part and welding portion from A-P,
Described spring comprises that successively the spring that connects turns over head, spring and dredges around internal layer, spring neck and be arranged on spring and turn over head and spring and dredge around the spring in the internal layer outside is outer and form.
2. a kind of electrode for high-voltage gas discharging light according to claim 1 is characterized in that, described plug length is 5～20mm, and diameter is 0.4～1.5mm.
3. a kind of electrode for high-voltage gas discharging light according to claim 1 is characterized in that, the length of the peak with heading part of described plug is 0～2mm.
4. a kind of electrode for high-voltage gas discharging light according to claim 1 is characterized in that, the welding portion of described plug connects niobium pipe or molybdenum sheet.
5. a kind of electrode for high-voltage gas discharging light according to claim 1 is characterized in that, described spring is partly located through the fixing spring that transition, mistake win or matched in clearance are connected to plug.
6. a kind of electrode for high-voltage gas discharging light according to claim 1 is characterized in that, described spring is the spring that the tungsten filament of diameter 0.15～0.8mm is made.
7. a kind of electrode for high-voltage gas discharging light according to claim 1 is characterized in that, described spring turns over head, the thin structure that consists of close-thin-Mi around internal layer, spring neck of spring by spring.
8. according to claim 1 or 7 described a kind of electrodes for high-voltage gas discharging light, it is characterized in that it is 0.05～0.8mm that described spring is dredged around the loose gap of internal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320243473 CN203250718U (en) | 2013-05-07 | 2013-05-07 | Electrode applied to high voltage gas discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320243473 CN203250718U (en) | 2013-05-07 | 2013-05-07 | Electrode applied to high voltage gas discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203250718U true CN203250718U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320243473 Expired - Lifetime CN203250718U (en) | 2013-05-07 | 2013-05-07 | Electrode applied to high voltage gas discharge lamp |
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| CN (1) | CN203250718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725039A (en) * | 2019-03-20 | 2020-09-29 | 上海亚尔光源有限公司 | Method for manufacturing electrode spring of high-power gas discharge lamp |
-
2013
- 2013-05-07 CN CN 201320243473 patent/CN203250718U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725039A (en) * | 2019-03-20 | 2020-09-29 | 上海亚尔光源有限公司 | Method for manufacturing electrode spring of high-power gas discharge lamp |
| CN111725039B (en) * | 2019-03-20 | 2023-03-31 | 上海亚尔精密零件制造有限公司 | Method for manufacturing electrode spring of high-power gas discharge lamp |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |
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| CX01 | Expiry of patent term |