CN217762603U - Mechanical labyrinth expansion device - Google Patents
Mechanical labyrinth expansion device Download PDFInfo
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- CN217762603U CN217762603U CN202221996283.6U CN202221996283U CN217762603U CN 217762603 U CN217762603 U CN 217762603U CN 202221996283 U CN202221996283 U CN 202221996283U CN 217762603 U CN217762603 U CN 217762603U
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- joint
- fixed joint
- movable joint
- sealing
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Abstract
The utility model discloses a mechanical labyrinth expansion device, which comprises a first fixed joint, a movable joint and a second fixed joint, wherein the first fixed joint, the movable joint and the second fixed joint are sequentially and hermetically arranged on the outer wall of a vertical pipeline from top to bottom; the upper section of the first fixed joint is positioned at the outer side and is mutually compressed and sealed with the upper section of the movable joint positioned at the inner side under the action of temperature expansion, and the lower section of the first fixed joint is positioned at the outer side and is mutually compressed and sealed with the middle section of the movable joint positioned at the inner side under the action of gravity; the lower section of the movable joint is positioned at the outer side and mutually compressed and sealed with the lower section of the second fixed joint positioned at the inner side under the action of gravity, and the middle section of the movable joint is positioned at the outer side and mutually compressed and sealed with the upper section of the second fixed joint positioned at the inner side under the action of temperature expansion; wherein, the movable joint is one or more. The mechanical labyrinth expansion device is simple in structure, convenient and quick to manufacture and install, low in cost and good in sealing effect.
Description
Technical Field
The utility model relates to an engineering construction technical field specifically, relates to a mechanical type maze expansion device.
Background
In engineering construction, particularly large heat pipes, due to the high temperature of the fluid therein, high temperature stress is generated during operation, so that the relevant pipes are often designed to be disconnected, i.e. not directly connected to the relevant fixed components, and special equipment such as expansion joints are often placed therein. Such devices do solve the problem of expansion stress, but they require relatively high manufacturing cost, are complex in manufacturing method, and require special manufacturers to manufacture and supply the materials.
Therefore, it is desirable to provide a device with simple manufacturing, low investment cost and shortened supply time to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mechanical type maze expansion device, this mechanical type maze expansion device simple structure, preparation simple to operate is swift, and is with low costs, and is sealed effectual.
In order to achieve the above object, the present invention provides a mechanical labyrinth expansion device, which comprises a first fixed joint, a movable joint and a second fixed joint, wherein the first fixed joint, the movable joint and the second fixed joint are sequentially arranged on the outer wall of a vertical pipeline in a sealing manner from top to bottom; the upper section of the first fixed joint is positioned at the outer side and is mutually compressed and sealed with the upper section of the movable joint positioned at the inner side under the action of temperature expansion, and the lower section of the first fixed joint is positioned at the outer side and is mutually compressed and sealed with the middle section of the movable joint positioned at the inner side under the action of gravity; the lower section of the movable joint is positioned at the outer side and mutually compressed and sealed with the lower section of the second fixed joint positioned at the inner side under the action of gravity, and the middle section of the movable joint is positioned at the outer side and mutually compressed and sealed with the upper section of the second fixed joint positioned at the inner side under the action of temperature expansion; wherein, the movable joint is one or more.
Preferably, the position close to the lower end of the first fixed joint is connected with the movable joint in a sealing mode through a first sealing group strip.
Preferably, the position close to the upper end of the movable joint is connected with the first fixed joint in a sealing mode through a second sealing group strip, and the position close to the lower end of the movable joint is connected with the second fixed joint in a sealing mode through a third sealing group strip.
Preferably, the position close to the upper end of the second fixed joint is connected with the movable joint in a sealing mode through a fourth sealing group strip.
Preferably, the first fixed joint, the movable joint and the second fixed joint are special-shaped joints, and the first sealing group strip, the second sealing group strip, the third sealing group strip and the fourth sealing group strip are all arranged on the straight section of the special-shaped joints.
Preferably, each group of sealing group strips is formed by welding annular flat steel.
Preferably, each group of sealing strips is staggered on the sealing surface from top to bottom.
According to the above technical scheme, the utility model discloses with first fixed festival, activity festival and the fixed festival top-down sealed setting in proper order on vertical pipe's outer wall, lie in the outside with the hypomere of first fixed festival and compress tightly mutually sealed with the upper segment that lies in inboard activity festival, lie in the outside with the lower extreme of activity festival and compress tightly sealed mutually with the upper segment that lies in inboard second fixed festival. In this way, in the cold state, the parallel surfaces of the faces 2 (the region between the second sealing group strip and the first sealing group strip as shown in fig. 1), the faces 4 (the region between the fourth sealing group strip and the third sealing group strip as shown in fig. 1) are pressed against each other by gravity, and in the hot state, the parallel surfaces of the faces 1 (the region above the second sealing group strip as shown in fig. 1), the faces 3 (the region above the fourth sealing group strip as shown in fig. 1) are pressed against each other by gravity. In the hot state, when the load expansion distance is small, the sealing surface of the surface 4 loses effectiveness firstly, and the surface 3 plays a sealing role at the same time; when the load expansion distance is larger, the sealing surface of the surface 2 fails firstly, and the surface 1 plays a sealing role at the same time. Furthermore, the movable joint can be one or more joints, and the expansion range of the device is increased by removing or increasing the movable joint according to the designed expansion size.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a mechanical labyrinth expansion device provided by the present invention.
Description of the reference numerals
1-first fixed joint 2-movable joint
3-second fixed joint 1-1-first sealing group strip
2-1-second seal group strip 2-2-third seal group strip
3-1-fourth seal group strip
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the terms of orientation such as "upper, lower, inner, outer" and the like included in the terms only represent the orientation of the terms in a conventional use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.
Referring to fig. 1, the utility model provides a mechanical labyrinth expansion device, which comprises a first fixed joint 1, a movable joint 2 and a second fixed joint 3, wherein the first fixed joint 1, the movable joint 2 and the second fixed joint 3 are sequentially arranged on the outer wall of a vertical pipeline in a sealing manner from top to bottom; the upper section of the first fixed joint 1 is positioned at the outer side and is arranged to be capable of mutually pressing and sealing with the upper section of the movable joint 2 positioned at the inner side under the action of temperature expansion (namely, the position of the surface 1 in the figure 1 can be mutually pressed and sealed under the action of temperature expansion), and the lower section of the first fixed joint 1 is positioned at the outer side and is mutually pressed and sealed with the middle section of the movable joint 2 positioned at the inner side under the action of gravity (namely, the position of the surface 2 in the figure 1 can be mutually pressed and sealed under the action of gravity); the lower section of the movable joint 2 is positioned at the outer side and is mutually pressed and sealed with the lower section of the second fixed joint 3 positioned at the inner side under the action of gravity (namely, the position of the surface 4 in the figure 1 can be mutually pressed and sealed under the action of gravity), and the middle section of the movable joint 2 positioned at the outer side and the upper section of the second fixed joint 3 positioned at the inner side are arranged to be mutually pressed and sealed under the action of temperature expansion (namely, the position of the surface 3 in the figure 1 can be mutually pressed and sealed under the action of temperature expansion); wherein, the movable joint 2 is one or more joints.
Through the technical scheme, the first fixed joint 1, the movable joint 2 and the second fixed joint 3 are sequentially and hermetically arranged on the outer wall of the vertical pipeline from top to bottom, the lower section of the first fixed joint 1 is positioned on the outer side and is mutually compressed and sealed with the upper section of the movable joint 2 positioned on the inner side, and the lower end of the movable joint 2 is positioned on the outer side and is mutually compressed and sealed with the upper section of the second fixed joint 3 positioned on the inner side. Thus, in the cold state, the respective parallel surfaces of the lower face 2 (the region between the second seal group strip 2-1 and the first seal group strip 1-1 as shown in fig. 1), the face 4 (the region between the fourth seal group strip 3-1 and the third seal group strip 2-2 as shown in fig. 1) and the respective parallel surfaces of the lower face 1 (the region above the second seal group strip 2-1 as shown in fig. 1) and the face 3 (the region above the fourth seal group strip 3-1 as shown in fig. 1) are pressed against each other by gravity in the hot state. In the hot state, when the load expansion distance is small, the sealing surface of the surface 4 loses effectiveness firstly, and the surface 3 plays a sealing role at the same time; when the load expansion distance is larger, the sealing surface of the surface 2 fails firstly, and the surface 1 plays a sealing role at the same time. Furthermore, the movable joint can be one or more joints, and the expansion range of the device is increased by eliminating or increasing the expansion size according to the design.
In addition, in order to further improve the sealing effect of the mechanical labyrinth expansion device, it is preferable that a position near the lower end of the first fixed joint 1 is sealingly connected to the movable joint 2 by a first seal group strip 1-1.
Meanwhile, the position close to the upper end of the movable joint 2 is in sealing connection with the first fixed joint 1 through a second sealing group strip 2-1, and the position close to the lower end of the movable joint 2 is in sealing connection with the second fixed joint 3 through a third sealing group strip 2-2.
Furthermore, the position close to the upper end of the second fixed joint 3 is connected with the movable joint 2 in a sealing mode through a fourth sealing group strip 3-1.
In order to enable the contact area among the first fixed joint 1, the movable joint 2 and the second fixed joint 3 to be larger and enable the labyrinth seal effect to be better, the first fixed joint 1, the movable joint 2 and the second fixed joint 3 are preferably special-shaped joints (specific shapes and structures can be designed or selected according to specific use requirements, and only a labyrinth seal surface needs to be formed), and the first seal assembly strip 1-1, the second seal assembly strip 2-1, the third seal assembly strip 2-2 and the fourth seal assembly strip 3-1 are all arranged on the straight section of the special-shaped joints.
In the present embodiment, each set of seal assembly bars is formed by welding annular flat steel.
In addition, each group of sealing strips are arranged on the sealing surface in a staggered manner from top to bottom, so that double-guarantee sealing is realized by adopting two forms of sealing strips and parallel double-sided sealing.
In the actual installation use, after first fixed knot 1, activity festival 2, second fixed knot 3 accomplished according to the picture drawing preparation, adopt the crane with first fixed knot 1 with the tuber pipe welding of design accomplish the back, activity festival 2, the second fixed knot 3 of below have sealed by oneself because of the dead weight. At this time, the second fixing joint 3 is welded with the corresponding pipeline below. Thus, after thermal expansion, face 4 will fail first, while face 3 will function as a seal, and face 2 will fail first, while face 1 will function as a seal.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (7)
1. The mechanical labyrinth expansion device is characterized by comprising a first fixed joint (1), a movable joint (2) and a second fixed joint (3), wherein the first fixed joint (1), the movable joint (2) and the second fixed joint (3) are sequentially arranged on the outer wall of a vertical pipeline in a sealing manner from top to bottom; the upper section of the first fixed joint (1) is positioned at the outer side and is mutually pressed and sealed with the upper section of the movable joint (2) positioned at the inner side under the action of temperature expansion, and the lower section of the first fixed joint (1) is positioned at the outer side and is mutually pressed and sealed with the middle section of the movable joint (2) positioned at the inner side under the action of gravity; the lower section of the movable joint (2) is positioned at the outer side and is mutually compressed and sealed with the lower section of the second fixed joint (3) positioned at the inner side under the action of gravity, and the middle section of the movable joint (2) is positioned at the outer side and is mutually compressed and sealed with the upper section of the second fixed joint (3) positioned at the inner side under the action of temperature expansion; wherein, the movable joint (2) is one or more joints.
2. The mechanical labyrinth expansion device according to claim 1, characterized in that a position close to the lower end of the first fixed joint (1) is sealingly connected to the movable joint (2) by a first sealing pack (1-1).
3. The mechanical labyrinth expansion device according to claim 2, characterized in that a position close to the upper end of the movable joint (2) is sealingly connected to the first fixed joint (1) by a second sealing pack strip (2-1), and a position close to the lower end of the movable joint (2) is sealingly connected to the second fixed joint (3) by a third sealing pack strip (2-2).
4. The mechanical labyrinth expansion device according to claim 3, characterized in that the position close to the upper end of the second fixed joint (3) is sealingly connected to the movable joint (2) by a fourth sealing pack (3-1).
5. The mechanical labyrinth expansion device according to claim 4, characterized in that the first fixed joint (1), the movable joint (2) and the second fixed joint (3) are profiled joints, and the first sealing group strip (1-1), the second sealing group strip (2-1), the third sealing group strip (2-2) and the fourth sealing group strip (3-1) are all arranged on a straight section of the profiled joints.
6. The mechanical labyrinth expansion device as recited in claim 5, wherein each set of seal pack bars is formed by welding annular flat steel.
7. The mechanical labyrinth expansion device as claimed in claim 5, wherein the strips of each set of seal set are staggered on the seal face from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221996283.6U CN217762603U (en) | 2022-07-28 | 2022-07-28 | Mechanical labyrinth expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221996283.6U CN217762603U (en) | 2022-07-28 | 2022-07-28 | Mechanical labyrinth expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217762603U true CN217762603U (en) | 2022-11-08 |
Family
ID=83876750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221996283.6U Active CN217762603U (en) | 2022-07-28 | 2022-07-28 | Mechanical labyrinth expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217762603U (en) |
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2022
- 2022-07-28 CN CN202221996283.6U patent/CN217762603U/en active Active
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