CN204482140U - Insulation and sealing structure and electrocurtain accelerator - Google Patents
Insulation and sealing structure and electrocurtain accelerator Download PDFInfo
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- CN204482140U CN204482140U CN201520185393.8U CN201520185393U CN204482140U CN 204482140 U CN204482140 U CN 204482140U CN 201520185393 U CN201520185393 U CN 201520185393U CN 204482140 U CN204482140 U CN 204482140U
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Abstract
The utility model discloses a kind of insulation and sealing structure and electrocurtain accelerator.Insulation and sealing structure is used for the chamber of seal case, comprise conductive structure mounting disc and insulation board, described conductive structure mounting disc and described insulation board are tightly connected, the installed surface of described insulation board and described casing is tightly connected, described conductive structure mounting disc comprises conductive structure, the first end of described conductive structure is positioned at described chamber, and the second end of described conductive structure is positioned at described casing outside.This insulation and sealing structure and the electrocurtain accelerator with this insulation and sealing structure can meet simultaneously conductive structure between two different operational environments time seal request and withstand voltage insulation requirements.
Description
Technical field
The utility model relates to electrical equipment, particularly a kind of insulation and sealing structure and electrocurtain accelerator.
Background technology
Not only the filament supply of electrocurtain accelerator and cathode grid assembly are operated in diverse environment, by conductive structure, filament supply and both cathode grid assemblies will be undertaken being connected but also needing ensureing that respective operational environment is relatively independent and need withstand voltage insulation.In order to realize this object, need to adopt insulation and sealing structure to realize the isolation of the operational environment of filament supply and the operational environment of cathode grid assembly.Insulation and sealing structure of the prior art needs to use high performance insulating material to realize.But high performance insulating material buying, processing and assembling all need to pay high expense.For this reason, need to design a kind of new insulation and sealing structure.
Utility model content
The purpose of this utility model is to provide a kind of insulation and sealing structure and electrocurtain accelerator, this insulation and sealing structure can meet simultaneously conductive structure between two different operational environments time seal request and withstand voltage insulation requirements.
The utility model first aspect provides a kind of insulation and sealing structure, for the chamber of seal case, described insulation and sealing structure comprises conductive structure mounting disc and insulation board, described conductive structure mounting disc and described insulation board are tightly connected, the installed surface of described insulation board and described casing is tightly connected, described conductive structure mounting disc comprises conductive structure, and the first end of described conductive structure is positioned at described chamber, and the second end of described conductive structure is positioned at described casing outside.
Further, described conductive structure mounting disc comprises metal flange and ceramics pole, and described ceramics pole is fixed in the centre bore of described metal flange hermetically, has described conductive structure in described ceramics pole.
Further, described insulation board comprises via hole, described insulation and sealing structure also comprises threaded sleeve and clamp nut, described threaded sleeve to be fixedly connected in described conductive structure mounting disc and through described via hole, and described clamp nut and described conductive structure mounting disc lay respectively at the both sides of described insulation board and described clamp nut and described threaded sleeve threaded engagement.
Further, described threaded sleeve comprises through hole, and one end of described through hole is communicated with the centre bore of described threaded sleeve, and the other end of described through hole is communicated with the gap between described threaded sleeve and described via hole.
Further, a side of described insulation board presses on described installed surface, described insulation and sealing structure also comprises pressure ring and screw, described pressure ring presses on another side of described insulation board, and described screw is positioned at the outer circumferential of described insulation board and is connected on described installed surface through the installing hole on described pressure ring.
Further, in the surface that described conductive structure mounting disc matches with described insulation board, one has the first radial locating surface, and another has the second radial locating surface coordinated with described first radial locating surface.
Further, described installed surface is towards described chamber, and described conductive structure mounting disc is positioned at described chamber.
Further, described insulation board is convex surface plate, and described convex surface plate protrudes towards described chamber.
Further, described insulation and sealing structure also comprises the first seal and the second seal, and described first seal is between described conductive structure mounting disc and described insulation board, and described second seal is between described insulation board and described installed surface.
The utility model second aspect provides a kind of electrocurtain accelerator, comprise casing, filament supply, vacuum (-tight) housing, cathode grid assembly and insulation and sealing structure, the insulation and sealing structure of described insulation and sealing structure according to any one of the utility model second aspect, megohmite insulant is filled in described chamber, described filament supply is positioned at described chamber, described cathode grid assembly is positioned at described vacuum (-tight) housing, the first end of described conductive structure is connected with described filament supply, and the second end of described conductive structure is connected with described cathode grid assembly.
The insulation and sealing structure provided based on the utility model and electrocurtain accelerator, because insulation and sealing structure comprises conductive structure mounting disc and insulation board, insulation board and conductive structure mounting disc are tightly connected, the installed surface of insulation board and casing is tightly connected, insulation board then can ensure that insulation and sealing structure has good withstand voltage insulation property, therefore, this insulation and sealing structure and the electrocurtain accelerator with this insulation and sealing structure can meet simultaneously conductive structure between two different operational environments time seal request and withstand voltage insulation requirements.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the casing of the electrocurtain accelerator of the utility model preferred embodiment and the syndeton of vacuum (-tight) housing and insulation and sealing structure thereof.
Fig. 2 is the structural representation of the insulation and sealing structure of the electrocurtain accelerator of the utility model preferred embodiment.
In Fig. 1 and Fig. 2, each Reference numeral represents respectively:
10, casing
20, filament supply
30, vacuum (-tight) housing
40, insulation and sealing structure
41, metal flange
42, insulation board
43, screw
44, pressure ring
45, the first seal
46, the second seal
47, ceramics pole
471, conductive structure
48, threaded sleeve
481, through hole
49, clamp nut
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
In the utility model preferred embodiment, only for the insulation and sealing structure in electrocurtain accelerator, insulation and sealing structure of the present utility model is described, but insulation and sealing structure of the present utility model be applicable to any demand fulfillment conductive structure between two different operational environments time seal request and the occasion of withstand voltage insulation requirements.
Fig. 1 is the structural representation of the casing of the electrocurtain accelerator of the utility model preferred embodiment and the syndeton of vacuum (-tight) housing and insulation and sealing structure thereof.Fig. 2 is the structural representation of the insulation and sealing structure of the electrocurtain accelerator of the utility model preferred embodiment.
As depicted in figs. 1 and 2, in the present embodiment, electrocurtain accelerator comprises casing 10, filament supply 20, vacuum (-tight) housing 30, cathode grid assembly (not shown) and insulation and sealing structure 40.
In the present embodiment, the metal shell of casing 10 and the metal shell of vacuum (-tight) housing 30 are welded to one another.In other unshowned embodiment, casing 10 and vacuum (-tight) housing 30 also can adopt other modes of being tightly connected such as Flange joint to be tightly connected, and also can be wholely set.
Casing 10 has chamber.Fill as megohmite insulants such as insulating oil or SF6 gases in chamber.Filament supply 20 is positioned at chamber.The cathode grid assembly that filament supply 20 is electrocurtain accelerator provides power supply.
Be vacuum chamber in vacuum (-tight) housing 30.Cathode grid assembly is positioned at vacuum chamber.
Insulation and sealing structure 40 for the chamber of seal case 10 to isolate chamber and the vacuum chamber of casing 10.Insulation and sealing structure 40 comprises conductive structure mounting disc, insulation board 42, screw 43, pressure ring 44, first seal 45, second seal 46, threaded sleeve 48 and clamp nut 49.
Conductive structure mounting disc to be installed on insulation board 42 and the first seal 45 between conductive structure mounting disc and insulation board 42, insulation board 42 is installed on the installed surface of casing 10, and the second seal 46 is between insulation board 42 and the installed surface of casing 10.
In the present embodiment, conductive structure mounting disc comprises metal flange 41 and ceramics pole 47.Ceramics pole 47 is fixed in the centre bore of metal flange 41 hermetically.Such as, ceramics pole 47 can adopt the mode of welding to be connected on metal flange 41.The centre of ceramics pole 47 has conductive structure 471.The first end of conductive structure 471 is positioned at the chamber of casing 10 and is connected with filament supply 20, and the second end of conductive structure 471 is positioned at vacuum chamber and is connected with cathode grid assembly.In the present embodiment, conductive structure 471 is lead-in wire.The quantity of lead-in wire is three.The diameter of lead-in wire is 3 ~ 5mm, to each other apart from 5 ~ 10mm, is the ceramic segment of ceramics pole 47 between each lead-in wire.In other unshowned embodiment, conductive structure 471 also can be other structures such as conducting strip.
Voltage between each conductive structure 471 is close, and metal flange 41 can play all pressure effects, reduces electrostatic field produces high-voltage breakdown chance along insulation board 42 surface.The ceramic segment of ceramics pole 47 can make each conductive structure 471 insulated from each other on the one hand, can make conductive structure 471 and metal flange 41 sealed insulation on the other hand.Adopt ceramic insulation one can meet the big current requirement of conductive structure 471, also avoid in addition causing megohmite insulant to infiltrate in vacuum chamber because of too high being softened by insulation board 42 around it of conductive structure 471 temperature.
In other unshowned embodiment, conductive structure mounting disc also can be the conductive structure mounting disc of other materials such as ceramic disk.
Insulation board 42 is preferably glass plate or ceramic wafer.Glass plate or ceramic wafer is adopted to make the with low cost of insulation and sealing structure 40 as insulation board 42.Certainly, the utility model does not get rid of use High Performance Insulation material making insulation board 42.
In the present embodiment, insulation board 42 is dull and stereotyped, and flat insulation board 42 is convenient to processing.
In a unshowned embodiment, insulation board 42 also can be convex surface plate, and convex surface plate protrudes towards the chamber side of casing 10.This arranges the insulation distance that can increase vacuum chamber.In addition, the non-uniform phenomenon of the stress distribution of insulation board 42 can also be reduced to a certain extent, improve reliability.
In the present embodiment, insulation board 42 is circular quartz glass plate, the outer circumference diameter 40 ~ 50cm of quartz glass plate, and the center-hole diameter of quartz glass plate can pass for threaded sleeve 48 thus form via hole.
First seal 45 and the second seal 46 can be all the seal of conventional material, such as O-ring seal or sealing gasket.In the present embodiment, the first seal 45 and the second seal 46 are O-ring seal.First seal 45 is arranged in the seal groove in conductive structure mounting disc, and the second seal 46 is arranged in the seal groove on the installed surface of casing 10.
As shown in Figure 2, in the present embodiment, threaded sleeve 48 is fixedly connected in conductive structure mounting disc.Such as, threaded sleeve 48 can be welded in the end face of metal flange 41.In unshowned embodiment, threaded sleeve 48 also can be fixedly connected with ceramics pole 47.Clamp nut 49 and conductive structure mounting disc lay respectively at the both sides of insulation board 42 and clamp nut 49 and threaded sleeve 48 threaded engagement.Thus conductive structure mounting disc is fixed on insulation board 42 by clamp nut 49.
In the present embodiment, conductive structure mounting disc is positioned at the chamber of casing 10.First seal 45 produces the chamber of deformation seal case 10 under the pressure effect of clamp nut 49 and megohmite insulant, thus isolated chamber and vacuum chamber.Under vacuum chamber is low vacuum state, megohmite insulant makes conductive structure mounting disc towards the pressuring direction of insulation board 42 under atmospheric pressure effect, thus the vacuum level requirements of vacuum chamber under operating state can be ensured better.
As shown in Figure 2, threaded sleeve 48 comprises through hole 481, and one end of through hole 481 is communicated with the centre bore of threaded sleeve 48, and the other end of through hole 481 is communicated with the gap between threaded sleeve 48 and via hole.In the present embodiment, through hole 481 is radial direction through hole.Through hole 481 can guide out the gas in the gap between threaded sleeve 48 and via hole, ensures that vacuum chamber exists without vacuum dead band.
As shown in Figure 2, a side of insulation board 42 presses on installed surface.Pressure ring 44 and installed surface lay respectively at the both sides of insulation board 42, and pressure ring 44 presses on another side of insulation board 42.Screw 43 is positioned at insulation board 42 outer circumferential and is connected on the installed surface of casing 10 through the installing hole on pressure ring 44.Second seal 46 is arranged in the seal groove on this installed surface.Insulation board 42 can be fixed on the installed surface of casing 10 by pressure ring 44 and screw element fitting 43.In the present embodiment, installed surface is step surface, and in other unshowned embodiment, installed surface also can be plane.
Preferably, installed surface is positioned at the chamber side of casing 10.This applies towards the pressure of installed surface insulation board 42 after arranging and chamber can being made to be filled with megohmite insulant, thus ensures sealing effectiveness better.
In order to ensure the radial position between conductive structure mounting disc and insulation board 42, preferably, in the surface that conductive structure mounting disc matches with insulation board 42, one has the first radial locating surface, and another has the second radial locating surface coordinated with the first radial locating surface.Such as, first radial locating surface can for first step face and the second radial locating surface is the second step face coordinated with First terrace, or the first radial locating surface is the first taper surface and the second radial locating surface is the second taper surface coordinated with the first taper surface.
The insulation and sealing structure of the present embodiment, can meet certain withstand voltage insulating requirements while meeting sealing requirements, the processing of unnecessary consideration High Performance Insulation material and use.Test by experiment, quartz glass plate can tolerate 150kV high pressure, therefore can meet the withstand voltage insulating requirements of the electric equipments such as conventional electrocurtain accelerator.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (10)
1. an insulation and sealing structure, for the chamber of seal case (10), it is characterized in that, described insulation and sealing structure (40) comprises conductive structure mounting disc and insulation board (42), described conductive structure mounting disc and described insulation board (42) are tightly connected, described insulation board (42) is tightly connected with the installed surface of described casing, described conductive structure mounting disc comprises conductive structure (471), the first end of described conductive structure (471) is positioned at described chamber, second end of described conductive structure (471) is positioned at described casing (10) outside.
2. insulation and sealing structure according to claim 1, it is characterized in that, described conductive structure mounting disc comprises metal flange (41) and ceramics pole (47), described ceramics pole (47) is fixed in the centre bore of described metal flange (41) hermetically, has described conductive structure (471) in described ceramics pole (47).
3. insulation and sealing structure according to claim 1, it is characterized in that, described insulation board (42) comprises via hole, described insulation and sealing structure (40) also comprises threaded sleeve (48) and clamp nut (49), described threaded sleeve (48) to be fixedly connected in described conductive structure mounting disc and through described via hole, and described clamp nut (49) and described conductive structure mounting disc lay respectively at the both sides of described insulation board (42) and described clamp nut (49) and described threaded sleeve (48) threaded engagement.
4. insulation and sealing structure according to claim 3, it is characterized in that, described threaded sleeve (48) comprises through hole (481), one end of described through hole (481) is communicated with the centre bore of described threaded sleeve (48), and the other end of described through hole (481) is communicated with the gap between described threaded sleeve (48) and described via hole.
5. insulation and sealing structure according to claim 1, it is characterized in that, a side of described insulation board (42) presses on described installed surface, described insulation and sealing structure (40) also comprises pressure ring (44) and screw (43), described pressure ring (44) presses on another side of described insulation board (42), and described screw (43) is positioned at the outer circumferential of described insulation board (42) and is connected on described installed surface through the installing hole on described pressure ring (44).
6. insulation and sealing structure according to claim 1, it is characterized in that, in the surface that described conductive structure mounting disc (41) is matched with described insulation board (42), one has the first radial locating surface, and another has the second radial locating surface coordinated with described first radial locating surface.
7. insulation and sealing structure according to claim 1, is characterized in that, described installed surface is towards described chamber, and described conductive structure mounting disc is positioned at described chamber.
8. insulation and sealing structure according to claim 1, is characterized in that, described insulation board (42) is convex surface plate, and described convex surface plate protrudes towards described chamber.
9. insulation and sealing structure according to claim 1, it is characterized in that, described insulation and sealing structure also comprises the first seal (45) and the second seal (46), described first seal (45) is positioned between described conductive structure mounting disc and described insulation board (42), and described second seal (46) is positioned between described insulation board (42) and described installed surface.
10. an electrocurtain accelerator, it is characterized in that, comprise casing (10), filament supply (20), vacuum (-tight) housing (30), cathode grid assembly and insulation and sealing structure (40), described insulation and sealing structure (40) is insulation and sealing structure according to any one of claim 1 to 9, megohmite insulant is filled in described chamber, described filament supply (20) is positioned at described chamber, described cathode grid assembly is positioned at described vacuum (-tight) housing (30), the first end of described conductive structure (471) is connected with described filament supply (20), second end of described conductive structure (471) is connected with described cathode grid assembly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520185393.8U CN204482140U (en) | 2015-03-30 | 2015-03-30 | Insulation and sealing structure and electrocurtain accelerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520185393.8U CN204482140U (en) | 2015-03-30 | 2015-03-30 | Insulation and sealing structure and electrocurtain accelerator |
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| CN204482140U true CN204482140U (en) | 2015-07-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104717823A (en) * | 2015-03-30 | 2015-06-17 | 同方威视技术股份有限公司 | Insulating and sealing structure and electronic curtain accelerator |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104717823A (en) * | 2015-03-30 | 2015-06-17 | 同方威视技术股份有限公司 | Insulating and sealing structure and electronic curtain accelerator |
| CN110167250A (en) * | 2015-03-30 | 2019-08-23 | 同方威视技术股份有限公司 | Insulation and sealing structure and electrocurtain accelerator |
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| GR01 | Patent grant |