CN214371730U - Connecting pipe and jacket sealing structure - Google Patents
Connecting pipe and jacket sealing structure Download PDFInfo
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- CN214371730U CN214371730U CN202120370247.8U CN202120370247U CN214371730U CN 214371730 U CN214371730 U CN 214371730U CN 202120370247 U CN202120370247 U CN 202120370247U CN 214371730 U CN214371730 U CN 214371730U
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- pipe
- connecting pipe
- jacket
- sleeve
- outer cylinder
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Abstract
The utility model relates to a take over and press from both sides cover enclosed construction, it is including taking over, intermediate pipe, gas barrier circle and outer barrel. The middle pipe is sleeved on the periphery of the connecting pipe, and the outer end of the middle pipe is connected with the peripheral surface of the connecting pipe. The air isolating ring is arranged on the inner wall of the middle pipe, and a buffer air cavity is enclosed among the air isolating ring, the middle pipe and the connecting pipe. The outer cylinder body is provided with a through hole, the through hole is connected with the inner end of the middle pipe, and the diameter of the through hole is larger than the outer diameter of the connecting pipe. The utility model discloses a temperature in the buffer gas intracavity is close to the temperature of takeover for the outer end of intervalve is less with the temperature gradient of the junction of takeover, connects the good reliability. The temperature gradient at the joint of the inner end of the middle pipe and the outer cylinder body is smaller, and the connection reliability is good. The utility model discloses a takeover is connected with outer barrel through the intervalve, and the outer end of intervalve and the inner of takeover and intervalve and the connection reliability between the outer barrel are all relatively good, have realized the reliable connection of takeover and outer barrel.
Description
Technical Field
The utility model relates to a take over and press from both sides cover enclosed construction.
Background
The top furnace cover or the bottom furnace cover of the deposition furnace is distributed with connecting pipes such as an air inlet pipe, an air outlet pipe, an electric heating radiant tube and the like. The deposition furnace also comprises an inner cylinder and an outer heat-preservation cold jacket. The inner cylinder is contacted with high-temperature material gas, so that the temperature of the inner cylinder is very high. Because the connecting pipe is welded and connected with the inner cylinder and is communicated with the inner cylinder, the temperature of the connecting pipe is also high. These high temperature connections are all required to pass through the outer insulating cold jacket and then extend to the outside. The outer heat-preservation cold jacket is arranged on the periphery of the inner cylinder, and the high-temperature connecting pipes are directly welded with the outer heat-preservation cold jacket.
The outer heat-preservation cold jacket is isolated from the connecting pipe by heat-preservation cotton, and the outside of the outer heat-preservation cold jacket is in contact with the atmosphere, so that the temperature of the outer heat-preservation cold jacket is close to the normal temperature. Because the temperature of the inner cylinder and the connecting pipe is very high, and the temperature of the outer heat-preservation cold jacket is very low, a very high temperature gradient and a very high thermal expansion difference are inevitably generated at the welding position of the connecting pipe and the outer heat-preservation cold jacket, and then very high local thermal stress is generated, so that the welding seam between the connecting pipe and the outer heat-preservation cold jacket is cracked. The deformation between the connecting pipe and the outer heat-preservation cold jacket is transferred to the welding position of the connecting pipe and the inner cylinder, so that the connection between the connecting pipe and the inner cylinder is easy to lose efficacy.
In summary, for the connection between the connection pipe parts with large temperature gradient, the problem of connection failure is easy to occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take over and press from both sides cover enclosed construction to improve the reliability of connecting.
To achieve the purpose, the utility model adopts the following technical proposal:
a nozzle and jacket closure comprising:
a nipple extending along a first axis;
the middle pipe extends along the first axis and is sleeved on the periphery of the connecting pipe, and the outer end of the middle pipe is connected with the peripheral surface of the connecting pipe;
the air isolating ring is arranged on the inner wall of the middle pipe, and a buffer air cavity is formed by the air isolating ring, the middle pipe and the connecting pipe in a surrounding manner;
the outer cylinder body is provided with a through hole for the connecting pipe to penetrate through, the through hole is connected with the inner end of the middle pipe, and the diameter of the through hole is larger than the outer diameter of the connecting pipe.
Preferably, in the above connecting tube and jacket closing structure, the intermediate tube includes a closed tube and a sleeve, an outer end of the closed tube is connected to an outer peripheral surface of the connecting tube, an inner end of the closed tube is connected to an outer end of the sleeve, and an inner end of the sleeve is connected to the through hole of the outer cylinder.
Preferably, in the above-mentioned adapter and jacket closure structure, the surface of the closure tube varies along a curve in a direction from its outer end to its inner end.
Preferably, in the above-mentioned adapter and jacket closing structure, the gas-barrier ring is mounted on the inner wall of the sleeve.
Preferably, in the above-mentioned adapter and jacket closing structure, the gas-isolating ring is installed in the middle of the sleeve.
Preferably, in the above connection pipe and jacket closed structure, the air-isolating ring is of an annular structure, and the air-isolating ring is sleeved outside the connection pipe and spaced from the connection pipe.
Preferably, in the above-mentioned adapter and jacket closing structure, at least a part of the space between the sleeve and the adapter is filled with insulation cotton.
Preferably, in the above connecting tube and jacket closing structure, the connecting tube and jacket closing structure further includes an inner cylinder, the outer cylinder is located at the periphery of the inner cylinder, and heat insulation cotton is also filled between the outer cylinder and the inner cylinder.
Preferably, in the above-mentioned adapter tube and jacket closing structure, the adapter tube is connected to and communicates with the inner cylinder.
Preferably, in the above-mentioned adapter tube and jacket closing structure, the intermediate tube is provided with a leakage detecting opening.
The utility model discloses a take over and press from both sides cover enclosed construction's beneficial effect lies in:
the temperature in the buffer air cavity is close to that of the connecting pipe, and the intermediate pipe is used for surrounding the buffer air cavity, so that the temperature gradient of the joint of the outer end of the intermediate pipe and the connecting pipe is small, and the connection reliability is good.
In addition, the middle pipe is used as a buffer piece between the connecting pipe and the outer cylinder body, so that the temperature of the connecting pipe reaches the outer cylinder body through a section of buffer, the temperature gradient between the inner end of the middle pipe and the outer cylinder body is smaller, and the connection reliability between the inner end of the middle pipe and the through hole of the outer cylinder body is improved.
For the lug connection between current takeover and the outer barrel, the utility model discloses a takeover is connected with the outer barrel through intervalve, and the outer end of intervalve and the inner of takeover and intervalve and the reliability of being connected between the outer barrel are all relatively good, have realized the reliable connection of takeover and outer barrel.
Drawings
FIG. 1 shows a connecting tube and a jacket enclosing structure according to an embodiment of the present invention;
fig. 2 shows a second connection pipe and a jacket sealing structure according to an embodiment of the present invention.
The component names and designations in the drawings are as follows:
the device comprises an inner cylinder 1, heat insulation cotton 2, an outer cylinder 3, an air isolating ring 4, a sleeve 5, a closed pipe 6, a leak detection port 7, a connecting pipe 8 and a buffer air cavity 9.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
As shown in fig. 1, the present embodiment discloses a connection pipe and jacket sealing structure, which includes a connection pipe 8, an intermediate pipe, a gas-isolating ring 4, and an outer cylinder 3. The outer cylinder 3 of this embodiment is an outer jacket.
The connection pipe 8 of this embodiment may be disposed perpendicular to the extending direction of the outer cylinder 3, or may be disposed at another angle with the extending direction of the outer cylinder 3. The nipple 8 extends along a first axis. The middle pipe extends along the first axis and is sleeved on the periphery of the connecting pipe 8, and the outer end of the middle pipe is connected with the peripheral surface of the connecting pipe 8 in a welding mode. The air isolating ring 4 is arranged on the inner wall of the middle pipe, and a buffer air cavity 9 is enclosed by the air isolating ring 4, the middle pipe and the connecting pipe 8. The outer cylinder body 3 is provided with a through hole for the connection pipe 8 to pass through, the through hole is connected with the inner end of the middle pipe, and the diameter of the through hole is larger than the outer diameter of the connection pipe 8. The inner wall of the through hole is spaced from the outer circumferential surface of the adapter tube 8. The inner end of the middle tube is connected with the through hole in a sealing way so as to seal the inner cavity of the outer cylinder body 3. Specifically, the nipple 8 may extend from the penetration hole to the outside in the radial direction of the outer cylinder 3.
The temperature in the buffer air cavity 9 of this embodiment is close to the temperature of the connection pipe 8, and the intermediate pipe is involved in enclosing the buffer air cavity 9, so that the temperature gradient at the connection position of the outer end of the intermediate pipe and the connection pipe 8 is small, and the connection reliability is good.
In addition, the middle pipe is used as a buffer element between the connecting pipe 8 and the outer cylinder 3, so that the temperature of the connecting pipe 8 reaches the outer cylinder 3 through a section of buffer, the temperature gradient between the inner end of the middle pipe and the through hole of the outer cylinder 3 is smaller, and the connection reliability between the inner end of the middle pipe and the through hole of the outer cylinder 3 is improved.
For the direct connection between the existing connecting pipe and the outer cylinder, the connecting pipe 8 of the embodiment is connected with the outer cylinder 3 through the middle pipe, the connection reliability between the outer end of the middle pipe and the connecting pipe 8 and between the inner end of the middle pipe and the outer cylinder 3 is good, and the reliable connection between the connecting pipe 8 and the outer cylinder 3 is realized.
In this embodiment, the connection tube and jacket sealing structure further includes an inner cylinder 1, the connection tube 8 is welded to and communicated with the inner cylinder 1, and the outer cylinder 3 is located at the periphery of the inner cylinder 1. The inner cylinder 1 is in gas contact with the high-temperature material, so that the temperature of the inner cylinder 1 is very high. The temperature of the nipple 8 will also be high. The outer cylinder 3 of this embodiment contacts with outside air, and packs between outer cylinder 3 and the inner tube 1 and have heat preservation cotton 2 for the temperature ratio of outer cylinder 3 is lower. Under the condition, the temperature in the buffer air cavity 9 is higher, so that the temperature of the outer end of the middle pipe is also higher, the temperature gradient of the joint of the middle pipe and the connecting pipe 8 is smaller, and the welding connection reliability is good.
The temperature of the buffer air cavity 9 surrounded by the middle pipe is lower than that of the connecting pipe 8 and higher than that of the outer cylinder 3, and when the high temperature on the middle pipe reaches the outer cylinder 3 through the inner section of the middle pipe, the temperature is greatly reduced, so that the temperature gradient between the inner end of the middle pipe and the outer cylinder 3 is small, and the welding reliability is good.
In the embodiment, the middle pipe is added between the connecting pipe 8 and the outer cylinder 3, so that the middle pipe participates in deformation coordination among the connecting pipe 8, the outer cylinder 3 and the inner cylinder 1, local stress at the welding position of the connecting pipe 8 and the inner cylinder 1 is also reduced, and the overall connection reliability of the embodiment is higher.
In this embodiment, the intermediate pipe comprises a closed pipe 6 and a sleeve 5, the sleeve 5 can be a straight pipe, and the diameter of the sleeve 5 is close to or the same as the aperture of the perforation. The outer end of the closed pipe 6 is connected with the peripheral surface of the connecting pipe 8, the inner end of the closed pipe 6 is connected with the outer end of the sleeve 5, and the inner end of the sleeve 5 is connected with the through hole of the outer cylinder 3. The middle pipe of the embodiment is composed of two parts, namely a closed pipe 6 and a sleeve 5, and is convenient to install. In other alternative embodiments, the intermediate tube may also be an integrally formed piece.
In this embodiment, the surface of the closed pipe 6 changes along a curve in the direction from the outer end to the inner end, which is beneficial to improving the deformation capacity, so as to reduce the local stress at the connection position of the closed pipe 6, the connection pipe 8 and the sleeve 5, and further improve the connection reliability.
In this embodiment, the air-isolating ring 4 is mounted on the inner wall of the sleeve 5. The air isolating ring 4 of the present embodiment may be welded to the inner wall of the sleeve 5, or may be detachably connected to the sleeve 5 by a connector such as a bolt. Further, in the present embodiment, the air-isolating ring 4 is installed in the middle of the sleeve 5. The sleeve 5 is divided into an outer section and an inner section by the air isolating ring 4, the outer section is surrounded with a buffer air cavity 9, and the inner section forms a cooling transition section. In this embodiment, the heat insulation cotton 2 is filled between the inner section of the sleeve 5 and the connection pipe 8 to ensure that the temperature of the inner section of the sleeve 5 is low, and the temperature gradient between the inner end of the sleeve 5 and the through hole of the outer cylinder 3 is reduced, so as to further improve the connection reliability between the inner end of the sleeve 5 and the through hole of the outer cylinder 3. In addition, the heat insulation cotton 2 also participates in surrounding the buffer air cavity 9, so that the sealing performance of the buffer air cavity 9 is higher, the temperature gradient between the outer end of the closed pipe 6 and the connecting pipe 8 can be further reduced, and the welding reliability is improved.
In this embodiment, the air-isolating ring 4 is an annular structure, and the air-isolating ring 4 is sleeved outside the connection pipe 8 and is arranged at an interval with the connection pipe 8.
In this embodiment, the middle tube is provided with a leak detection port 7. The compactness of the inner cylinder 1 and the outer cylinder 3 can be detected by pressing the jacket cavity of the outer cylinder 3 through the leakage detection opening 7.
The inner cylinder 1 of the embodiment can be a closed cavity surrounded by a cylinder, a spherical shell, an elliptical seal head, a disc-shaped seal head, a flat cover and the like. The outer cylinder 3 is a closed chamber surrounding the outer cylinder 1.
In other alternative embodiments, the closing tube 6 may be circular, flat, tapered, or any combination of curved and flat surfaces that can close the inner cavity of the outer cylinder 3.
In other alternative embodiments, the temperature of the nozzle 8 and the inner cylinder 1 can also be lower than the temperature of the outer cylinder 3. In this case, the arrangement of the above structure can also ensure good connection reliability between the adapter tube and the parts of the jacket enclosure structure.
In other alternative embodiments, the above structure is also suitable for a vacuum thermal insulation or cold insulation jacket, in which case, the buffer air cavity 9 needs to be filled with heat-conducting or cold-conducting cotton, and other spaces can be filled with thermal insulation or cold insulation cotton to enhance the thermal insulation or cold insulation effect. Or other spaces are not filled with any material. Other spaces herein refer to: all the spaces inside the air-isolating ring 4, namely the spaces where the heat-insulating cotton 2 is distributed.
Example two
As shown in fig. 2, the present embodiment is substantially the same as the first embodiment, except that: the outer cylinder 3 is the body of the device.
Correspondingly, the connecting pipe 8 of the embodiment is high in temperature, the body of the equipment is low in temperature, the inner cylinder 1 is not arranged, the connecting pipe 8 is used as a feeding pipe extending into the body of the equipment, and the heat preservation cotton 2 is not arranged on the inner side of the air isolating ring 4.
The adapter tube 8 of the present embodiment has a small temperature gradient with the body of the apparatus, thereby having good connection reliability.
In other alternative embodiments, the nozzle 8 may also be of a low temperature, the body of the device being of a high temperature.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A connecting pipe and jacket closing structure is characterized by comprising:
a nipple (8) extending along a first axis;
the middle pipe extends along the first axis and is sleeved on the periphery of the connecting pipe (8), and the outer end of the middle pipe is connected with the peripheral surface of the connecting pipe (8);
the air isolating ring (4) is arranged on the inner wall of the middle pipe, and a buffer air cavity (9) is enclosed among the air isolating ring (4), the middle pipe and the connecting pipe (8);
the outer cylinder body (3) is provided with a through hole for the connecting pipe (8) to penetrate through, the through hole is connected with the inner end of the middle pipe, and the diameter of the through hole is larger than the outer diameter of the connecting pipe (8).
2. The adapter tube and jacket closure structure according to claim 1, wherein the intermediate tube comprises a closure tube (6) and a sleeve (5), an outer end of the closure tube (6) is connected to an outer circumferential surface of the adapter tube (8), an inner end of the closure tube (6) is connected to an outer end of the sleeve (5), and an inner end of the sleeve (5) is connected to the through hole of the outer cylinder (3).
3. A nozzle and jacket closure according to claim 2, characterised in that the surface of the closure tube (6) varies along a curve in the direction from its outer end to its inner end.
4. The nozzle and jacket closure structure according to claim 2, characterised in that the gas-tight ring (4) is mounted on the inner wall of the sleeve (5).
5. The nozzle and jacket closure structure according to claim 4, wherein the air-tight ring (4) is mounted in the middle of the sleeve (5).
6. The connecting pipe and jacket closing structure according to claim 1, wherein the air-isolating ring (4) is an annular structure, and the air-isolating ring (4) is sleeved outside the connecting pipe (8) and is arranged at a distance from the connecting pipe (8).
7. The nozzle and jacket closure structure according to claim 2, characterised in that at least part of the space between the sleeve (5) and the nozzle (8) is filled with insulating cotton (2).
8. The adapter and jacket closure structure according to claim 7, further comprising an inner cylinder (1), wherein the outer cylinder (3) is located at the periphery of the inner cylinder (1), and heat insulation cotton (2) is filled between the outer cylinder (3) and the inner cylinder (1).
9. The nozzle and jacket closure structure according to claim 8, wherein the nozzle (8) is connected and communicates with the inner cylinder (1).
10. The connection pipe and jacket closure structure according to any one of claims 1 to 9, wherein the intermediate pipe is provided with a leak detection port (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120370247.8U CN214371730U (en) | 2021-02-10 | 2021-02-10 | Connecting pipe and jacket sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120370247.8U CN214371730U (en) | 2021-02-10 | 2021-02-10 | Connecting pipe and jacket sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214371730U true CN214371730U (en) | 2021-10-08 |
Family
ID=77965615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120370247.8U Active CN214371730U (en) | 2021-02-10 | 2021-02-10 | Connecting pipe and jacket sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214371730U (en) |
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2021
- 2021-02-10 CN CN202120370247.8U patent/CN214371730U/en active Active
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