CN202992442U - Novel exhaust pipe installment fixture - Google Patents
Novel exhaust pipe installment fixture Download PDFInfo
- Publication number
- CN202992442U CN202992442U CN 201220472236 CN201220472236U CN202992442U CN 202992442 U CN202992442 U CN 202992442U CN 201220472236 CN201220472236 CN 201220472236 CN 201220472236 U CN201220472236 U CN 201220472236U CN 202992442 U CN202992442 U CN 202992442U
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- Prior art keywords
- base
- special
- snap ring
- shaped snap
- external diameter
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Abstract
The utility model discloses a novel exhaust pipe installment fixture. The novel exhaust pipe installment fixture comprises a base, a flange, a special-shaped clamping ring, a ring and a nut. The base is in a barrel-shaped structure, the external diameter of the base is provided with threads, the middle of the base is in a hexagonal structure, and the lower end of the base is circular-shaped. A step hole, a trapezoidal hole and a circular hole are sequentially arranged on the inner diameter of the base from top down. The flange is connected at the lower end of the base in a sleeved mode, and is fixed with the base in a welded mode. The lower end of the special-shaped clamping ring is arranged in the step hole of the base, the special-shaped clamping ring comprises two symmetrical semi-circular rings, the external diameter of the upper portion of the special-shaped is a step groove, and the ring is connected on the step groove of the special-shaped clamping ring in a sleeved mode. The nut is connected with the threads of the upper end of the base in a matched mode, and covers the special-shaped clamping ring. The novel exhaust pipe installment fixture is simple in structure, convenient to operate, capable of ensuring that an exhaust pipe is fast installed and fixed, high in connection vacuum air impermeability, and capable of ensuring that air leakage rates are controlled to be below 10-14Pa*L/s, and being integrally baked under the high temperature lower than 700DEG C; and service life is prolonged.
Description
Technical field
The utility model relates to a kind of homogeneous tube of travelling wave valve and makes furniture, especially relates to a kind of novel outlet pipe mounting fixture, belongs to microwave electric vacuum technology field.
Background technique
Travelling wave valve, magnetron, klystron equal vacuum electronic device, inside is generally vacuum state, and the electronics that it is inner and the interaction of peripheral circuits produce signal and amplify and change.Vacuum is pumped in vacuum electron device inside, and residual gas pressure is 10
-2～10
-6Pa.In the manufacture process of these vacuum devices, critical process---exhaust is arranged one, exactly its internal gas is vacuumized, also can carry out Baking out to device when exhaust in case of necessity, keep high vacuum state during with the assurance internal work.In exhaust process, need outlet pipe that device and gas outlet means (generally being called exhaust station) are connected to one, because vacuum electron device inside is ultrahigh vacuum, need to carry out long exhaust, the requirement that the connection of like this outlet pipe being connected with exhaust station has vacuum-tightness and reliability.
The connection of General Proper do-nothing system pipeline enclosure needs to adopt flange plate, and then the centre adopts a plurality of screw rod structures to be fixed with metal or rubber seal, is fixedly according to certain mode screwing screw, not so can guarantee the tightness that vacuum connects.When vacuum electron device is connected to exhaust station, need to adopt a plurality of screw rods like this.And need long high-temperature baking during exhaust, make in exhaust process, for for the thread of screw-rod structure, be equivalent to carry out annealing in process, after repeatedly using, screw rod will degenerate, and needs to use new screw rod, can cause like this installing device when carrying out exhaust, not only operating process complexity and cost are higher.
The model utility content
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of can carry out a kind of novel outlet pipe mounting fixture that outlet pipe connects fast.
The technological scheme that the utility model adopts is:
a kind of novel outlet pipe mounting fixture, it is characterized in that, comprise base, flange plate, the abnormity snap ring, annulus and nut, described base is drum-shaped structure, the upper end of the external diameter of base is provided with screw thread, the middle part of external diameter is hexgonal structure, the lower end of external diameter is circular, the internal diameter of described base is followed successively by step hole from top to bottom, trapezoidal hole and circular hole, described flange plate is socketed in the lower end of base, and be welded and fixed with base, the lower end of described special-shaped snap ring is arranged in the step hole of base, described special-shaped snap ring comprises the semicircular ring of two symmetries, and the top external diameter of special-shaped snap ring is stepped slot, described annulus is socketed on the stepped slot of special-shaped snap ring, described nut is connected with the screw-thread fit of base upper end, and described nut covers described special-shaped snap ring.
Further, the bottom of described special-shaped snap ring is provided with two projections, described two projections are symmetricly set in the bottom of two semicircular ring, and on the outer wall of the step hole on described base internal diameter top corresponding be formed with two be symmetrical arranged and with described two straight troughs that projection matches.
And the bottom surface of the step hole on described base internal diameter top also is provided with a recessed groove of circle.
The material of described base is stainless steel.
Further, the external diameter of described annulus is identical with the external diameter of special-shaped snap ring.
And the end face of described nut is plane structure, and described end face is pressed on the upper-end surface of step of special-shaped snap ring.
The beneficial effects of the utility model are: the utility model is simple in structure, convenient operation, and can quick mounting fixing outlet pipe, and connect that vacuum-tightness is high, leak rate can be controlled in below 10～14PaL/s, and whole can anti-high-temperature baking below 700 ℃, extended working life.
Description of drawings
Fig. 1 is the structural representation of outlet pipe described in the utility model;
Fig. 2 is the utility model one embodiment's structural representation;
Fig. 3 is the structural representation of base described in the utility model;
Fig. 4 is the cross-sectional view of special-shaped snap ring described in the utility model;
Fig. 5 is the plan view of special-shaped snap ring described in the utility model;
Fig. 6 is the intermediate portion horizontal section schematic diagram of base described in the utility model;
Fig. 7 is the status architecture schematic diagram that the utility model is connected with outlet pipe.
In figure, main reference character implication is as follows:
1, annulus 2, special-shaped snap ring 21, semicircular ring 3, nut 4, base
41, hexgonal structure 42, groove 5, flange plate 6, comb
7, comb bottom plane 8, briquetting.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done concrete introduction.
Fig. 1 is the structural representation of outlet pipe described in the utility model.
As shown in Figure 1: described outlet pipe comprises comb 6, comb bottom plane 7 and briquetting 8, and described briquetting 8 is socketed on the comb 6 on 7 tops, comb bottom plane, when travelling wave valve carries out exhaust, assembles.
Fig. 2 is the utility model one embodiment's structural representation, and Fig. 3 is for being the structural representation of base described in the utility model; Fig. 4 is the cross-sectional view of special-shaped snap ring described in the utility model; Fig. 5 is the plan view of special-shaped snap ring described in the utility model; Fig. 6 is the intermediate portion horizontal section schematic diagram of base described in the utility model.
as Fig. 2-shown in Figure 6: novel outlet pipe mounting fixture, comprise base 4, flange plate 5, abnormity snap ring 2, annulus 1 and nut 3, described base 4 materials are stainless steel, and it is drum-shaped structure, the upper end of the external diameter of base is provided with screw thread, the middle part of external diameter is hexgonal structure 41, the lower end of external diameter is circular, the internal diameter of described base 4 is followed successively by step hole from top to bottom, trapezoidal hole and circular hole, described flange plate 5 is socketed in the lower end of base 4, and fix by Welding with base 4, described flange plate 5 is ring structure, the circular outer diameter of its internal diameter and base 4 lower ends coordinates, guarantee vacuum-tightness and structural strength, the lower end of described special-shaped snap ring 2 is arranged in the step hole of base 4, be specially: the bottom of described special-shaped snap ring 2 is provided with two projections, described two projections are symmetricly set in the bottom of two semicircular ring 21, and on the outer wall of the step hole on described base 4 internal diameter tops corresponding be formed with two be symmetrical arranged and with described two straight troughs that projection matches.
Described special-shaped snap ring 2 comprises the semicircular ring 21 of two symmetries, and the top external diameter of special-shaped snap ring 2 is stepped slot, described annulus 1 is socketed on the stepped slot of special-shaped snap ring 2, form an integral body, and the external diameter of described annulus 1 is identical with the external diameter of special-shaped snap ring 2, described nut 3 is connected with the screw-thread fit of base 4 upper ends, be used for and base 4 between screw, and described nut 3 covers described special-shaped snap ring 2, be specially: the end face of described nut 3 is plane structure, and described end face is pressed on the upper-end surface of step of special-shaped snap ring 2.
In addition, the bottom surface of the step hole on described base 4 internal diameter tops also is provided with a recessed groove 42 of circle.
Fig. 7 is the status architecture schematic diagram that the utility model is connected with outlet pipe.
as shown in Figure 7: concrete using method of the present utility model is: travelling wave valve is when exhaust, have six circular holes in flange plate 5, described flange plate 5 is fixed by circular hole and exhaust station, simultaneously, a recessed interior indentation sealing pad of groove 42 of circle in the bottom surface of the step hole on base 4 internal diameter tops, be used for vacuum seal, then, outlet pipe is placed in step hole in base 4 upper-end inner diameter, then special-shaped snap ring 2 is socketed on outlet pipe, then be enclosed within on the stepped slot of special-shaped snap ring 2 with annulus 1, fix outlet pipe with this, at this moment, the projection of abnormity snap ring 2 lower ends is inserted in the straight trough of base 4, guarantee that different in nature snap ring 2 can only move at above-below direction, then, nut 3 is inserted in from the upper end, and screw with the screw thread of base 4 upper ends, at this moment, step up the hexgonal structure of the centre of base with spanner, make at nut 3 when screwing, effectively fixed base 4 prevents base 4 torsional deformations, and screw process at nut 3, nut 3 moves down and drives annulus 1, opposite sex snap ring 2 is pushed down the briquetting 8 of outlet pipe, the edge of a knife of briquetting 8 compresses the comb bottom plane 7 of comb lower end, outlet pipe is fixed on base 4, and the tightness of assurance connection.
The utility model is simple in structure, convenient operation, and can quick mounting fixing outlet pipe, and connect that vacuum-tightness is high, leak rate can be controlled in below 10～14PaL/s, and whole can anti-high-temperature baking below 700 ℃, extended working life.
Above-described embodiment does not limit the utility model in any form, and all employings are equal to replaces or technological scheme that the mode of equivalent transformation obtains, all drops in protection domain of the present utility model.
Claims (6)
1. novel outlet pipe mounting fixture, it is characterized in that, comprise base, flange plate, the abnormity snap ring, annulus and nut, described base is drum-shaped structure, the upper end of the external diameter of base is provided with screw thread, the middle part of external diameter is hexgonal structure, the lower end of external diameter is circular, the internal diameter of described base is followed successively by step hole from top to bottom, trapezoidal hole and circular hole, described flange plate is socketed in the lower end of base, and be welded and fixed with base, the lower end of described special-shaped snap ring is arranged in the step hole of base, described special-shaped snap ring comprises the semicircular ring of two symmetries, and the top external diameter of special-shaped snap ring is stepped slot, described annulus is socketed on the stepped slot of special-shaped snap ring, described nut is connected with the screw-thread fit of base upper end, and described nut covers described special-shaped snap ring.
2. a kind of novel outlet pipe mounting fixture according to claim 1, it is characterized in that, the bottom of described special-shaped snap ring is provided with two projections, described two projections are symmetricly set in the bottom of two semicircular ring, and on the outer wall of the step hole on described base internal diameter top corresponding be formed with two be symmetrical arranged and with described two straight troughs that projection matches.
3. a kind of novel outlet pipe mounting fixture according to claim 1, is characterized in that, the bottom surface of the step hole on described base internal diameter top also is provided with a recessed groove of circle.
4. a kind of novel outlet pipe mounting fixture according to claim 1, is characterized in that, the material of described base is stainless steel.
5. a kind of novel outlet pipe mounting fixture according to claim 1, is characterized in that, the external diameter of described annulus is identical with the external diameter of special-shaped snap ring.
6. a kind of novel outlet pipe mounting fixture according to claim 1, is characterized in that, the end face of described nut is plane structure, and described end face is pressed on the upper-end surface of step of special-shaped snap ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472236 CN202992442U (en) | 2012-09-17 | 2012-09-17 | Novel exhaust pipe installment fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472236 CN202992442U (en) | 2012-09-17 | 2012-09-17 | Novel exhaust pipe installment fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992442U true CN202992442U (en) | 2013-06-12 |
Family
ID=48563621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220472236 Expired - Fee Related CN202992442U (en) | 2012-09-17 | 2012-09-17 | Novel exhaust pipe installment fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992442U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707191A (en) * | 2013-12-31 | 2014-04-09 | 郝鹏飞 | Application method of clamp with abrasive flow wiping stainless steel tubes |
| CN106439396A (en) * | 2016-11-25 | 2017-02-22 | 攀枝花煤业（集团）有限责任公司 | Valve thermal-insulation structure |
| CN112944066A (en) * | 2021-03-11 | 2021-06-11 | 中国科学院上海技术物理研究所 | Freely-detachable type super-current helium temperature zone gold wire sealing connection device and implementation method |
-
2012
- 2012-09-17 CN CN 201220472236 patent/CN202992442U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707191A (en) * | 2013-12-31 | 2014-04-09 | 郝鹏飞 | Application method of clamp with abrasive flow wiping stainless steel tubes |
| CN103707191B (en) * | 2013-12-31 | 2016-04-27 | 郝鹏飞 | A kind of using method of stainless steel tube abrasive flows wiping fixture |
| CN106439396A (en) * | 2016-11-25 | 2017-02-22 | 攀枝花煤业（集团）有限责任公司 | Valve thermal-insulation structure |
| CN112944066A (en) * | 2021-03-11 | 2021-06-11 | 中国科学院上海技术物理研究所 | Freely-detachable type super-current helium temperature zone gold wire sealing connection device and implementation method |
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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: 20130612 Termination date: 20190917 |