CN205406490U - Alumina ceramics fluorescent tube - Google Patents
Alumina ceramics fluorescent tube Download PDFInfo
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- CN205406490U CN205406490U CN201620153230.6U CN201620153230U CN205406490U CN 205406490 U CN205406490 U CN 205406490U CN 201620153230 U CN201620153230 U CN 201620153230U CN 205406490 U CN205406490 U CN 205406490U
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- tube
- tubule
- electrode
- outer tube
- cylindrical metal
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Abstract
The utility model relates to an alumina ceramics fluorescent tube, including ceramic lamp tube and set up in first electrode and second electrode in the ceramic lamp tube, ceramic lamp tube includes electric arc tube body, and with the first tubule and the second tubule of this body coupling of electricity arc tube, electricity arc tube body is including outer pipe and inlayer pipe. An electrode package draws together cylindrical metal tungsten pole, cylindrical metal niobium pole, heliciform tungsten filament and heliciform molybdenum filament. The design of inlayer pipe and outer tubular construction is passed through in this application, and specific metal directional solidification 's holding time reduces for the metal melt and the chemical reaction times on alumina ceramics's surface reduce. Through the structure setting of cylindrical metal tungsten pole with cylindrical metal niobium pole, realized the clearance fit problem of electrode with ceramic tubule internal diameter, improved ceramic metal halide lamp's performance and life.
Description
Technical field
This utility model belongs to metal halid lamp electric arc tube, particularly relates to a kind of aluminium oxide ceramics electric arc tube structure.
Background technology
The semitransparent ceramics of employing polycrystal alumina has operating temperature height as the metal halid lamp of arctube material, and light efficiency is high, and light decay is little, and develop the color the advantages such as good and life-span length.
Current ceramic metal halide lamp electric arc tube mainly adopts translucent alumina ceramics manufacture, the shape of electric arc tube mainly has cylinder, cylinder is combined with circular cone, elliposoidal, but existing these kind of type is processing technique complexity and not easily processes, and need during fabrication to add forming agent, improve production cost.
On the other hand, ceramic arc tube maximum operation (service) temperature can more than 2000 degree, the directional solidification that can meet common metal and alloy uses, but when some high activity metals are solidified, it is easy to produce at molten metal contacts interface a pollution layer, under directional solidification high temperature, particularly crosses long-time heat preservation, more exacerbate the chemical reaction between melt and earthenware, it is primarily due in melt and incorporates substantial amounts of oxide inclusions, affect the overall performance of earthenware.
The electrode of current ceramic gold-halogen lamp adopts molybdenum helical structure, it is simply that electrode molybdenum is as material, in order to strengthen the intermiscibility in welded seal section metal molybdenum Yu ceramic material, it is necessary to twine spiral helicine molybdenum filament on molybdenum bar.But it is entangled on molybdenum bar owing to spiral helicine molybdenum filament is spring-like, it is impossible to reach well-proportioned state, easily causes welding material infiltration when carrying out sealing-in uneven, the stability of product is caused bad impact.
Utility model content
The purpose of this utility model is that the aluminium oxide ceramics fluorescent tube to existing structure proposes improvement opportunity scheme, by the technical program, while not improving processing technique complexity, reduces the chemical reaction between molten metal melt and aluminium oxide ceramics arc tube surface；Can solve the problem that the problem that between electrode and earthenware, sealing-in infiltration is uneven simultaneously.
This utility model is achieved through the following technical solutions:
A kind of aluminium oxide ceramics fluorescent tube, including ceramic lamp tube and be arranged at the first electrode in described ceramic lamp tube and the second electrode；
Described ceramic lamp tube includes arc tube body, and the first tubule being connected with described arc tube body and the second tubule；
The internal diameter of described first tubule and the inner space of described arc tube body；The internal diameter of described second tubule and the inner space of described arc tube body；
Described arc tube body includes outer tube and inner tube；The outer wall of the inwall of described outer tube and described inner tube is fitted；
One end of described first electrode is stretched in described first tubule, and the other end is arranged in described arc tube body；One end of described second electrode is stretched in described second tubule, and the other end is arranged in described arc tube body；
Described first electrode is identical with the structure of described second electrode；
Described first electrode includes cylindrical metal tungsten bar, cylindrical metal niobium bar, helical tungsten filamen and helical form molybdenum filament；
One end of described cylindrical metal tungsten bar penetrates described helical tungsten filamen and fixing with described helical tungsten filamen is connected, and the other end of described cylindrical metal tungsten bar penetrates described helical form molybdenum filament and fixing with described helical form molybdenum filament and is connected；
One end of described cylindrical metal niobium bar is provided with described cylindrical metal tungsten bar that one end of described helical form molybdenum filament is fixing to be connected.
Described outer tube includes the first outer tube and the second outer tube；The axial cross section of described first outer tube is U-shaped；The axial cross section of described second outer tube is U-shaped；One end of closely described second outer tube of described first outer tube is provided with First stepped structure；One end of closely described first outer tube of described second outer tube is provided with second step shape structure；The section tubular wall of described outer tube is formed after described First stepped structure and described second step shape respective outer side edges.
The wall thickness of described outer tube is more than the wall thickness of described inner tube.
Described inner tube includes the first inner tube and the second inner tube；The axial cross section of described first inner tube is U-shaped；The axial cross section of described second inner tube is U-shaped；One end of closely described second inner tube of described first inner tube is provided with the 3rd step-like structure；One end of closely described first inner tube of described second inner tube is provided with the 4th step-like structure；Described 3rd step-like structure forms the section tubular wall of described inner tube with described 4th step-like structure after coordinating.
Described first tubule is all identical with the size of described second tubule, shape and structure.
The wall thickness of described first tubule is less than the wall thickness of described outer tube.
The beneficial effects of the utility model are:
The application is by the design of inner tube and outer tube structure, and the temperature retention time of special metal directional solidification reduces so that the chemical time on the surface of metal bath and aluminium oxide ceramics reduces.And by using the structure of inner tube, by improving the proportioning of inner tube material, decrease the probability of special metal and inner tube surface chemical reaction, improve the performance of aluminium oxide ceramics fluorescent tube.
On the other hand, the application is arranged by the structure of cylindrical metal tungsten bar with cylindrical metal niobium bar, by metal niobium bar being penetrated in pottery tubule, make ceramic shell thermal expansion consistent with the thermal expansion of cylindrical metal niobium bar, achieve the matched in clearance problem of electrode and pottery capillary inside diameter, improve the performance and used life of ceramic gold-halogen lamp.
Accompanying drawing explanation
Fig. 1 is this utility model aluminium oxide ceramics lamp tube structure schematic diagram；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is this utility model the first electrode structure schematic diagram.
Description of reference numerals
1 ceramic lamp tube, 2 first electrodes, 3 second electrodes, 4 inner tube, 11 first outer tube, 12 second outer tube, 13 first tubules, 14 second tubules, 21 cylindrical metal tungsten bars, 22 cylindrical metal niobium bars, 23 helical tungsten filamens, 24 helical form molybdenum filaments, 41 first inner tube, 42 second inner tube, 111 First stepped structure, 121 second step shape structures, 411 the 3rd step-like structures, 421 the 4th step-like structures.
Detailed description of the invention
Describing the technical solution of the utility model by the following examples in detail, below example is merely illustrative of, and is only capable of for explaining and illustrate the technical solution of the utility model, and is not to be construed as the restriction to technical solutions of the utility model.
Embodiment 1
This utility model provides a kind of aluminium oxide ceramics fluorescent tube, as shown in Figure 1 to Figure 3, including ceramic lamp tube 1 and be arranged at the first electrode 2 and the second electrode 3 in described ceramic lamp tube 1.
Ceramic lamp tube 1 includes arc tube body and the first tubule 13 and the second tubule 14 being connected with described arc tube body；In this application, the shape of arc tube body is fixed as desired, it is possible to for cylinder, cylinder is combined with circular cone, elliposoidal etc..
The internal diameter of described first tubule 13 and the inner space of described arc tube body；The internal diameter of described second tubule 14 and the inner space of described arc tube body.
One end of described first electrode 2 is stretched in described first tubule 13, and the other end is arranged in described arc tube body；One end of described second electrode 3 is stretched in described second tubule 14, and the other end is arranged in described arc tube body.
Described first electrode 2 is identical with the structure of described second electrode 3.
Described first electrode 2 includes cylindrical metal tungsten bar 21, cylindrical metal niobium bar 22, helical tungsten filamen 23 and helical form molybdenum filament 24.
One end of described cylindrical metal tungsten bar 21 penetrates described helical tungsten filamen 23 and fixing with described helical tungsten filamen 23 is connected, and the other end of described cylindrical metal tungsten bar 21 penetrates described helical form molybdenum filament 24 and fixing with described helical form molybdenum filament 24 and is connected.
One end of described cylindrical metal niobium bar 22 is provided with described cylindrical metal tungsten bar 21 that one end of described helical form molybdenum filament 24 is fixing to be connected.
Described arc tube body includes outer tube and inner tube 4；The outer wall of the inwall of described outer tube and described inner tube is fitted.The wall thickness of described outer tube is more than the wall thickness of described inner tube.
Described outer tube includes the first outer tube 11 and the second outer tube 12；The axial cross section of described first outer tube 11 is U-shaped；The axial cross section of described second outer tube 12 is U-shaped；One end of closely described second outer tube 12 of described first outer tube 11 is provided with First stepped structure 111；One end of closely described first outer tube 11 of described second outer tube 12 is provided with second step shape structure 121；The section tubular wall of described outer tube is formed after described First stepped structure and described second step shape respective outer side edges.Aluminium oxide ceramics electric arc tube in the application at least belongs to four built up structures, in this application, the first outer tube coordinates with the second outer tube and forms outer tube structure.
Described first tubule is all identical with the size of described second tubule, shape and structure.
The wall thickness of described first tubule is less than the wall thickness of described outer tube.
Embodiment 2
This utility model provides a kind of aluminium oxide ceramics fluorescent tube, as shown in Figure 1 to Figure 3, including ceramic lamp tube 1 and be arranged at the first electrode 2 and the second electrode 3 in described ceramic lamp tube 1.
Ceramic lamp tube 1 includes arc tube body and the first tubule 13 and the second tubule 14 being connected with described arc tube body；In this application, the shape of arc tube body is fixed as desired, it is possible to for cylinder, cylinder is combined with circular cone, elliposoidal etc..
The internal diameter of described first tubule 13 and the inner space of described arc tube body；The internal diameter of described second tubule 14 and the inner space of described arc tube body.
One end of described first electrode 2 is stretched in described first tubule 13, and the other end is arranged in described arc tube body；One end of described second electrode 3 is stretched in described second tubule 14, and the other end is arranged in described arc tube body.
Described first electrode 2 is identical with the structure of described second electrode 3.
Described first electrode 2 includes cylindrical metal tungsten bar 21, cylindrical metal niobium bar 22, helical tungsten filamen 23 and helical form molybdenum filament 24.
One end of described cylindrical metal tungsten bar 21 penetrates described helical tungsten filamen 23 and fixing with described helical tungsten filamen 23 is connected, and the other end of described cylindrical metal tungsten bar 21 penetrates described helical form molybdenum filament 21 and fixing with described helical form molybdenum filament 24 and is connected.
One end of described cylindrical metal niobium bar 22 is provided with described cylindrical metal tungsten bar 21 that one end of described helical form molybdenum filament 24 is fixing to be connected.
Described arc tube body includes outer tube and inner tube 4；The outer wall of the inwall of described outer tube and described inner tube is fitted.The wall thickness of described outer tube is more than the wall thickness of described inner tube.
Described outer tube includes the first outer tube 11 and the second outer tube 12；The axial cross section of described first outer tube 11 is U-shaped；The axial cross section of described second outer tube 12 is U-shaped；One end of closely described second outer tube 12 of described first outer tube 11 is provided with First stepped structure 111；One end of closely described first outer tube 11 of described second outer tube 12 is provided with second step shape structure 121；Described First stepped structure 111 forms the section tubular wall of described outer tube with described second step shape structure 121 after coordinating.Aluminium oxide ceramics electric arc tube in the application at least belongs to four built up structures, in this application, the first outer tube coordinates with the second outer tube and forms outer tube structure.
Described first tubule is all identical with the size of described second tubule, shape and structure.
The wall thickness of described first tubule is less than the wall thickness of described outer tube.
Described inner tube 4 includes the first inner tube 41 and the second internal layer 42 is managed；The axial cross section of described first inner tube 41 is U-shaped；The axial cross section of described second inner tube 42 is U-shaped；One end of closely described second inner tube 42 of described first inner tube 41 is provided with the 3rd step-like structure 411；The one end managing closely described first inner tube 41 at described second internal layer 42 is provided with the 4th step-like structure 421；Described 3rd step-like structure 411 forms the section tubular wall of described inner tube with described 4th step-like structure 421 after coordinating.
The technical solution of the utility model is described although detailed, but it is to be understood that, those skilled in the art, by means changes to technical scheme such as conventional deformation, improvement, replacements, all should work as within the protection domain belonging to the application.
Claims (6)
1. an aluminium oxide ceramics fluorescent tube, it is characterised in that: include ceramic lamp tube and the first electrode being arranged in described ceramic lamp tube and the second electrode；
Described ceramic lamp tube includes arc tube body, and the first tubule being connected with described arc tube body and the second tubule；
The internal diameter of described first tubule and the inner space of described arc tube body；The internal diameter of described second tubule and the inner space of described arc tube body；
Described arc tube body includes outer tube and inner tube；The outer wall of the inwall of described outer tube and described inner tube is fitted；
One end of described first electrode is stretched in described first tubule, and the other end is arranged in described arc tube body；One end of described second electrode is stretched in described second tubule, and the other end is arranged in described arc tube body；
Described first electrode is identical with the structure of described second electrode；
Described first electrode includes cylindrical metal tungsten bar, cylindrical metal niobium bar, helical tungsten filamen and helical form molybdenum filament；
One end of described cylindrical metal tungsten bar penetrates described helical tungsten filamen and fixing with described helical tungsten filamen is connected, and the other end of described cylindrical metal tungsten bar penetrates described helical form molybdenum filament and fixing with described helical form molybdenum filament and is connected；
One end of described cylindrical metal niobium bar is provided with described cylindrical metal tungsten bar that one end of described helical form molybdenum filament is fixing to be connected.
2. aluminium oxide ceramics fluorescent tube according to claim 1, it is characterised in that: described outer tube includes the first outer tube and the second outer tube；The axial cross section of described first outer tube is U-shaped；The axial cross section of described second outer tube is U-shaped；One end of closely described second outer tube of described first outer tube is provided with First stepped structure；One end of closely described first outer tube of described second outer tube is provided with second step shape structure；The section tubular wall of described outer tube is formed after described First stepped structure and described second step shape respective outer side edges.
3. aluminium oxide ceramics fluorescent tube according to claim 1, it is characterised in that: the wall thickness of described outer tube is more than the wall thickness of described inner tube.
4. aluminium oxide ceramics fluorescent tube according to claim 1, it is characterised in that: described inner tube includes the first inner tube and the second inner tube；The axial cross section of described first inner tube is U-shaped；The axial cross section of described second inner tube is U-shaped；One end of closely described second inner tube of described first inner tube is provided with the 3rd step-like structure；One end of closely described first inner tube of described second inner tube is provided with the 4th step-like structure；Described 3rd step-like structure forms the section tubular wall of described inner tube with described 4th step-like structure after coordinating.
5. aluminium oxide ceramics fluorescent tube according to claim 1, it is characterised in that: described first tubule is all identical with the size of described second tubule, shape and structure.
6. aluminium oxide ceramics fluorescent tube according to claim 5, it is characterised in that: the wall thickness of described first tubule is less than the wall thickness of described outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153230.6U CN205406490U (en) | 2016-02-29 | 2016-02-29 | Alumina ceramics fluorescent tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153230.6U CN205406490U (en) | 2016-02-29 | 2016-02-29 | Alumina ceramics fluorescent tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205406490U true CN205406490U (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620153230.6U Expired - Fee Related CN205406490U (en) | 2016-02-29 | 2016-02-29 | Alumina ceramics fluorescent tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205406490U (en) |
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2016
- 2016-02-29 CN CN201620153230.6U patent/CN205406490U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20210228 |