CN203007137U - Thin film sealing structure of heat resistant and high strength glass tube and metalwork - Google Patents
Thin film sealing structure of heat resistant and high strength glass tube and metalwork Download PDFInfo
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- CN203007137U CN203007137U CN 201220694969 CN201220694969U CN203007137U CN 203007137 U CN203007137 U CN 203007137U CN 201220694969 CN201220694969 CN 201220694969 CN 201220694969 U CN201220694969 U CN 201220694969U CN 203007137 U CN203007137 U CN 203007137U
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- glass tubing
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Abstract
The utility model discloses a thin film sealing structure of a heat resistant and high strength glass tube and a metalwork, wherein an annular surface of a metal thin film ring is welded and fixed in the tube wall of the glass tube, the inside diameter of the metal thin film ring is smaller than that of the glass tube, the outside diameter of the metal thin film ring is smaller than that of the glass tube, and the outer surface of the metalwork is fixed with the inner side face of the metal thin film ring; two projections with inclined slopes are arranged on the tube wall at the welding site with the metal thin film ring on the glass tube; supporting rings are respectively arranged at the projections, the supporting rings comprise annular surfaces with inside diameters adaptive to the outside diameter of the metalwork, and the inner side faces of the annular surfaces of the supporting rings are fixed with the outer side face of the metalwork; the annular surfaces of the supporting rings are further connected with slopes formed by extending and bending outwards, and the slopes are matched with the inclined slopes of the projections on the glass tube; and the directions of the inclined slopes are oppositely arranged, and the slopes of the two supporting rings are respectively matched with the inclined slopes. The thin film sealing structure disclosed by the utility model is excellent in high temperature resistance, high in strength, compact in dimension, convenient to process, low in cost and strong in universality.
Description
Technical field
The utility model relates to a kind of novel a kind of glass-to-metal seal structure, the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing and metalwork specifically, in the product that can be applicable to need metal and glass to carry out sealing-in and at high temperature use, such as electron tube, lighting, solar energy vacuum heat collecting device etc.
Background technology
The sealing-in mode of glass and metal has multiple, but it is few to can be applicable to the sealing-in mode of hot environment, and wherein film sealing-in mode resistance to elevated temperatures is more excellent, but has the at high temperature easy oxidized and low problem of intensity of film.For example the patent No. is that described in 201010528354.5 " a kind of straight-through type solar energy vacuum heat collector ", product has adopted film sealing-in mode, but its ruggedized construction is complicated, high temperature lower-glass Guan Yi is cracked, and processing difficulties, size is compact not, simultaneously unresolved film easy oxidized problem at high temperature.Therefore there is certain limitation on using.
Summary of the invention
Goal of the invention: the purpose of this utility model is to provide the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing and metalwork, to solve the problems such as other sealing-in scenario-frame complexity, processing difficulties, size are compact not, metallic film is fragile.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme:
The film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing and metalwork, it comprises Glass tubing and metal foil zona, the ring surface welding of described metal foil zona is fixed in the tube wall of Glass tubing; The internal diameter of described metal foil zona is less than the internal diameter of Glass tubing, and the external diameter of metal foil zona ring surface is less than the external diameter of Glass tubing, and the inboard of the outside surface of metalwork and metal foil zona is fixed; Glass tubing with the tube wall of metal foil zona weld on be provided with two projections with slope in up and down; Be respectively equipped with a support ring in the prominence, described support ring comprises internal diameter and the adaptive ring surface of metalwork external diameter, and the medial surface of the ring surface of support ring and the outer side of metalwork are fixed; The ring surface of support ring also is connected with domatic that the bending that stretches out forms, and the slope of the projection on domatic and Glass tubing is adaptive; Wherein, the opposite direction setting of the slope of two projections, the domatic of two support rings coordinates with the slope of two projections respectively.
Wherein, the bending that extends internally of the ring surface of described metal foil zona forms folding surface, and the medial surface of folding surface and the outer side of metalwork are fixed.
Wherein, described metal foil zona is coated with oxidation-resistant film on a side ring surface of air; The thickness of the oxidation-resistant film on described metal foil zona radially from inside to outside gradually attenuation be 0.
Wherein, the cavity that Glass tubing, metalwork, metal foil zona, support ring surround wherein is filled with high temperature material in a space of air one side.
Wherein, the thickness of described metal foil zona ring surface radially from inside to outside, thickness attenuation gradually is 0.
Wherein, described Glass tubing is with the tubular glass that is connected with other tubular glass parts, the thickness of tubular glass from the outwards attenuation gradually of Glass tubing junction.
Beneficial effect: the sealing structure that the utility model has solved existing glass and metallic film is the easy oxidized and low problem of intensity at high temperature, and the existing existing complex structure of various sealing structure, cost is high, range of application is narrow problem; Have that resistance to elevated temperatures excellence, intensity are high, compact dimensions, easy to process, cost is low, the characteristics of highly versatile.Specific as follows:
(1) due to adopt support ring at glass and metallic film sealing-in position support glass pipe at an angle, be support ring domatic with the contacting of Glass tubing projection slope, at high temperature can not cause support ring to crack Glass tubing, when reinforcing the sealing-in position, can reach very high use temperature, and support ring axial compression sealing-in position, the reliability of glass and metallic film sealing-in is higher.Due to radially reinforcing and the axial grip of having realized simultaneously the sealing-in position, its structure is more compact, can effectively reduce the finished product size, and the parts minimizing, helps to reduce the cost of the finished product.
(2) because the metallic film endless belt has folding surface, before and after the metallic film boxing connects and the finished product between the usage period, when temperature significantly changes, can prevent that the metal foil zona from being drawn bad, or glass and metallic film sealing-in position are drawn bad.
(3) due to the metallic film part plating oxidation-resistant film of one side in being exposed to air only, and oxidation-resistant film thickness is thinned to zero gradually after entering metallic film and glass sealing position, guaranteed simultaneously the sealing property of metallic film and glass and the high temperature oxidation resistance of metallic film.
(4) due in two cavitys that Glass tubing, metalwork, metal foil zona, support ring surround, be exposed in the cavity of a side in air and be filled with high temperature material, can completely cut off air, further improve the high temperature oxidation resistance of metal foil zona.
(5) due to the metal foil zona partly adopting the blade-like of attenuation gradually with the sealing-in of glass, improve the reliability of sealing-in and the intensity of metal foil zona itself.
(6) due to the tubular glass that is connected with other tubular glass parts, be used for the longer glass pipe fitting of welding, in conjunction with aforementioned features, its versatility is very strong, in conjunction with different sizes and design of material, can be applicable in the multiple product that needs metal and glass to carry out sealing-in and at high temperature use such as electron tube, lighting, solar energy vacuum heat collecting device etc.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is metallic film structure of rings schematic diagram in Fig. 1.
Fig. 3 is the structural representation of the support ring in the utility model.
Fig. 4 is the structural representation of Glass tubing of the present utility model.
Fig. 5 is the structural representation of another kind of embodiment of the present utility model.
Fig. 6 is metallic film structure of rings schematic diagram in Fig. 5.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is done further and explained.
As shown in Figure 1, the film sealing structure of a kind of high-intensity Glass tubing of the present utility model and metalwork, it comprises Glass tubing 1 and metal foil zona 3, described metal foil zona 3 comprises ring surface, the ring surface welding of metal foil zona 3 is fixed in the tube wall of Glass tubing 1, be the ring surface of metal foil zona 3 and frit with the mould of Glass tubing 1 profiling in carry out the high temperature welding, and the external diameter of Glass tubing 1 is greater than the external diameter of metal foil zona 3 ring surfaces, be that the ring surface of metal foil zona 3 is sandwiched in Glass tubing 1 inside, both form Leakless sealing.
As shown in Figure 2, because the thermal expansivity of Glass tubing 1, metalwork 2 and metal foil zona 3 is variant, and metalwork 2 is rigidity, metalwork 2 and metal foil zona 3 are before and after welding, when temperature variation is excessive, easily cause the inner edge of metal foil zona 3 to be drawn bad, or the sealing-in position of metal foil zona 3 and Glass tubing 1 is drawn bad.In addition, if the use temperature of the finished product is too high, the inner edge that also easily causes metal foil zona 3 is drawn the sealing-in position of bad or metal foil zona 3 and Glass tubing 1 to be drawn bad; Therefore the bending that can extend internally at the ring surface of described metal foil zona 3 forms folding surface 6, and the external diameter of folding surface 6 is less than the internal diameter of Glass tubing 1, and the outer side of the medial surface of folding surface 6 and metalwork 2 is welded and fixed, and needs to guarantee resistance to air loss.The deformability of the metal foil zona 3 after bending and intensity raising, when welding front and back and the finished product use, the difficult quilt of metal foil zona 3 and sealing-in position is drawn bad.
If metalwork 2 adopts the lower welding process of welding temperature with metal foil zona 3, and the use temperature of the finished product is lower, metal foil zona 3 can not arrange folding surface 6.As shown in Fig. 5,6, need this moment to guarantee the internal diameter of metallic film ring 3 less than the internal diameter of Glass tubing 1, the external diameter of metal foil zona 3 ring surfaces is less than the external diameter of Glass tubing 1, and the inboard of the outside surface of metalwork 2 and metal foil zona 2 is fixed.
The thickness of metal foil zona 3 ring surfaces radially from inside to outside, thickness is attenuation gradually, namely is blade-like, can effectively improve the intensity of the reliability of Glass tubing 1 and 3 sealing-ins of metal foil zona and metal foil zona 3 itself.This be because: the edge of one, metal foil zona 3 is blade-like, and namely edge thickness is zero, and can avoid producing at the edge of metal foil zona 3 at the sealing-in position affects the sealing-in effect at bubble; Two, enter inside, sealing-in position after, the less thick of metal foil zona 3 can not affect the intensity at sealing-in position, and the thickness of metal foil zona 3 is less, deformability is stronger, the sealing-in reliability is higher; Three, metal foil zona 3 not the segment thickness at the sealing-in position become large, the intensity of metal foil zona 3 own also is improved, thereby has also improved the intensity of product itself.
As shown in Figure 3, because metal foil zona 3 is very thin, sealing-in is not only 0.05mm～0.2mm at the thickness in the part thickness of inside glass yet, its undercapacity is to support the weight of the finished product, easily damaged in carrying, therefore for further reinforcing glass pipe 1, metalwork 2 and metal foil zona 3 threes' strength of joint, add two support rings 4.Simultaneously be provided with two the trapezoidal shape projections 5 with slope in up and down on the tube wall at the sealing-in position of Glass tubing 1 and metal foil zona 3; 5 places arrange respectively a support ring 4 in projection, and described support ring 4 comprises internal diameter and the adaptive ring surface of metalwork 2 external diameters, and the outer side of the medial surface of the ring surface of support ring 4 and metalwork 2 is fixed; Ring surface also is connected with domatic that the bending that stretches out forms, and the slope of the projection 5 on domatic and Glass tubing 1 is adaptive; Wherein, the vergence direction of the slope of two projections 5 arranges on the contrary, and the domatic of two support rings 4 coordinates with the slope of two projections 5 respectively.Support ring 4 need to be fixing with metalwork 2, can adopt be threaded, flange connects or welding, or the combination of these three kinds of forms.Support ring 4 only inboard and metalwork 2 outsides of its ring surface is fixed, and the slope of the domatic and projection 5 of support ring 4 fits tightly.
Two slopes of the trapezoidal shape projection 5 in the elastic clamping Glass tubing 1 of two support ring 4 dependence self, two support rings 4 are connected and fixed with metalwork 2, make Glass tubing 1, metalwork 2, metal foil zona 3 three positions fix, metal foil zona 3 is not subjected to external force, thereby avoid the damage of metal foil zona 3, and improved the reliability at the sealing-in position of Glass tubing 1 and metal foil zona 3.Due to the thermal expansivity of support ring 4 thermal expansivity greater than Glass tubing 1, if support ring 4 direct support glass pipe 1 diametrically, between the usage period during temperature variation, the radial swelling meeting of support ring 4 cracks Glass tubing 1, causes the finished product to damage at product.And when adopting slope to support, at product between the usage period during temperature variation, because support ring 4 has elasticity and support ring 4 can be made small relatively sliding along slope with Glass tubing 1, the radial swelling of support ring 4 can not cause Glass tubing 1 to be cracked.Support ring 4 also relies on slope to clamp in the axial direction the sealing-in position, makes the resistance to air loss of metal foil zona 3 and Glass tubing 1 both weldings more reliable.Due to radially reinforcing and the axial grip of having realized simultaneously the sealing-in position, its structure is more compact, can effectively reduce the finished product size, and the parts minimizing, helps to reduce the cost of the finished product.
Described metal foil zona 3 is coated with oxidation-resistant film on the ring surface of a side of air 8; The thickness of the oxidation-resistant film on described metal foil zona 3 radially from inside to outside gradually attenuation be 0.For avoiding at high temperature oxidation of metal foil zona 3, be coated with oxidation-resistant film on the surface of metal foil zona 3.But, the wetting property of oxidation-resistant film and glass is bad, can cause between Glass tubing 1 and metal foil zona 3 welding insecure, even can't welding, so oxidation-resistant film only is arranged on the surface of metal foil zona 3 towards a side of air 8, and opposite side is vacuum or fills non-oxidized gas, does not plate oxidation-resistant film, and the surperficial opposite side of metal foil zona 3 can be kept the sealing property with Glass tubing 1 like this; The thickness of the oxidation-resistant film on metal foil zona 3 radially from inside to outside gradually attenuation be 0, also can guarantee simultaneously metallic film ring 3 and the sealing property of Glass tubing 1 and the high temperature oxidation resistance of metal foil zona 3 in the one side that is coated with oxidation-resistant film like this.For example described oxidation-resistant film can adopt chromium plating, and the thickness in thickness is about 0.02mm.
In the cavity 7 that described Glass tubing 1, metalwork 2, metal foil zona 3, support ring 4 four surround, wherein be exposed in the cavity 7 of a side in air 8 and be filled with high temperature material, can completely cut off air 8, further improve the high temperature oxidation resistance of metal foil zona 3.Can adopt expanded graphite, ceramic fiber or asbestos etc. such as described high temperature material.
As shown in Figure 4, one end of described Glass tubing 1 is with the tubular glass that is connected with other tubular glass parts, be used for the longer glass pipe fitting of welding, the thickness of pipe of tubular glass namely from outwards diminishing gradually with Glass tubing 1 junction, is complementary with other tubular glass part dimensions that will be connected to the size of outermost end from inside to outside, this is conducive to improve the intensity of tubular glass, reduce the internal stress of glass, and Glass tubing 1 is more easily dismantled mould after in-mold molding.
According to the difference of application scenario, metalwork 2 can be hollow or the solid metal part.After completing, metalwork 2 removes to connect other hollow or solid metal part again, and Glass tubing 2 removes other glass workpiece of welding again.And a side that will be coated with oxidation-resistant film is in the one side that contacts with air, and opposite side is placed in vacuum or fills the finished product of non-oxidized gas inner.
The above is only preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. the film sealing structure of high temperature resistant, a high-intensity Glass tubing and metalwork, is characterized in that, it comprises Glass tubing (1) and metal foil zona (3), and the ring surface welding of described metal foil zona (3) is fixed in the tube wall of Glass tubing (1); The internal diameter of described metal foil zona (3) is less than the internal diameter of Glass tubing (1), and the external diameter of metal foil zona (3) ring surface is less than the external diameter of Glass tubing (1), and the inboard of the outside surface of metalwork (2) and metal foil zona (2) is fixed;
Glass tubing (1) with the tube wall of metal foil zona (3) weld on be provided with up and down two projections with slope (5); Locate to be provided with respectively a support ring (4) in projection (5), described support ring (4) comprises internal diameter and the adaptive ring surface of metalwork (2) external diameter, and the outer side of the medial surface of the ring surface of support ring (4) and metalwork (2) is fixed; The ring surface of support ring (4) also is connected with domatic that the bending that stretches out forms, and the slope of the projection (5) on domatic and Glass tubing (1) is adaptive; Wherein, the opposite direction setting of the slope of two projections (5), the domatic of two support rings (4) coordinates with the slope of two projections (5) respectively.
2. the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing according to claim 1 and metalwork, it is characterized in that, the bending that extends internally of the ring surface of described metal foil zona (3) forms folding surface (6), and the outer side of the medial surface of folding surface (6) and metalwork (2) is fixed.
3. the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing according to claim 1 and 2 and metalwork, is characterized in that, described metal foil zona (3) is coated with oxidation-resistant film on a side ring surface of air (8).
4. the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing according to claim 3 and metalwork, is characterized in that, the thickness of the oxidation-resistant film on described metal foil zona (3) radially from inside to outside gradually attenuation be 0.
5. the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing according to claim 1 and metalwork, is characterized in that, the thickness of described metal foil zona (3) ring surface radially from inside to outside, thickness attenuation gradually is 0.
6. the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing according to claim 1 and metalwork, it is characterized in that, the cavity (7) that Glass tubing (1), metalwork (2), metal foil zona (3), support ring (4) four surround wherein is filled with high temperature material in a space (7) of air (8) one sides.
7. the film sealing structure of a kind of high temperature resistant, high-intensity Glass tubing according to claim 1 and metalwork, it is characterized in that, described Glass tubing (1) is with the tubular glass that is connected with other tubular glass parts, the thickness of tubular glass from the outwards attenuation gradually of Glass tubing (1) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220694969 CN203007137U (en) | 2012-12-14 | 2012-12-14 | Thin film sealing structure of heat resistant and high strength glass tube and metalwork |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220694969 CN203007137U (en) | 2012-12-14 | 2012-12-14 | Thin film sealing structure of heat resistant and high strength glass tube and metalwork |
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| CN203007137U true CN203007137U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220694969 Expired - Fee Related CN203007137U (en) | 2012-12-14 | 2012-12-14 | Thin film sealing structure of heat resistant and high strength glass tube and metalwork |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011621A (en) * | 2012-12-14 | 2013-04-03 | 南京旭城新能源技术有限公司 | Thin-film sealing-in structure of high-temperature-resistant and high-strength glass tube and metal piece |
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2012
- 2012-12-14 CN CN 201220694969 patent/CN203007137U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011621A (en) * | 2012-12-14 | 2013-04-03 | 南京旭城新能源技术有限公司 | Thin-film sealing-in structure of high-temperature-resistant and high-strength glass tube and metal piece |
| WO2014090063A1 (en) * | 2012-12-14 | 2014-06-19 | 南京旭城新能源技术有限公司 | High-temperature-resistant high-strength sealing film structure between glass tube and metal piece |
| CN103011621B (en) * | 2012-12-14 | 2015-03-11 | 南京旭城新能源技术有限公司 | Thin-film sealing-in structure of high-temperature-resistant and high-strength glass tube and metal piece |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20131214 |