CN215596701U - High temperature resistant expansion joint based on multilayer is kept apart - Google Patents
High temperature resistant expansion joint based on multilayer is kept apart Download PDFInfo
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- CN215596701U CN215596701U CN202121078163.3U CN202121078163U CN215596701U CN 215596701 U CN215596701 U CN 215596701U CN 202121078163 U CN202121078163 U CN 202121078163U CN 215596701 U CN215596701 U CN 215596701U
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- pressing block
- expansion joint
- resistant expansion
- multilayer
- lower pressing
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Abstract
The utility model discloses a high-temperature-resistant expansion joint based on multilayer isolation, which comprises an elastic compensation part, wherein an upper pressing block and a lower pressing block are arranged at the upper end and the lower end of the elastic compensation part respectively; the bottom of the outer shell is provided with an annular bulge bent outwards, and the annular bulge is positioned between the upper pressing block and the lower pressing block; the end part of the lower pressing block is provided with an annular groove, a sealing ring is arranged in the annular groove, and the sealing ring is abutted to the outer surface of the annular bulge. Compared with the existing device, the device can effectively improve the high-temperature resistance of the expansion joint through the design of multiple layers. The asbestos interlayer in the middle can slow down the temperature change, and can provide certain elastic buffer for the deformation of the inner shell or the outer shell so as to prevent the inner shell or the outer shell from cracking due to severe deformation.
Description
Technical Field
The utility model relates to a high-temperature-resistant expansion joint based on multilayer isolation.
Background
The expansion joint is widely applied to the connection of various pipelines, and the main function of the expansion joint is to compensate the elastic deformation of the pipelines caused by expansion with heat and contraction with cold.
The expansion joint is used as an elastic compensation element which can freely stretch out and draw back, has higher requirements than common pipeline parts, is mainly applied to the aspects of chemical industry, metallurgy, nuclear energy and the like, and has higher requirements on high temperature resistance when being particularly applied to the aspects of chemical industry and metallurgy.
And the elastic deformation generated by the expansion joint does not cause the expansion joint to break under the condition of severe temperature change, thereby affecting the safety of the whole pipeline.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a high-temperature-resistant expansion joint based on multilayer isolation.
A high-temperature-resistant expansion joint based on multilayer isolation comprises an elastic compensation component, wherein an upper pressing block and a lower pressing block are arranged at the upper end and the lower end of the elastic compensation component respectively, the elastic compensation component comprises an inner shell, an asbestos interlayer and an outer shell, and the middle parts of the inner shell and the outer shell are bulged outwards; the bottom of the outer shell is provided with an annular bulge bent outwards, and the annular bulge is positioned between the upper pressing block and the lower pressing block; the end part of the lower pressing block is provided with an annular groove, a sealing ring is arranged in the annular groove, and the sealing ring is abutted to the outer surface of the annular bulge.
Preferably, the upper pressing block is connected with the lower pressing block through a plurality of bolts.
Preferably, the number of the bolts is eight.
Preferably, the thickness of the upper pressing block is equal to that of the lower pressing block.
Preferably, the inner part of the inner shell is provided with a steel wire mesh layer.
Preferably, the thickness of the asbestos sandwich is smaller than that of the inner shell.
Preferably, the thickness of the asbestos interlayer is smaller than that of the outer shell.
Has the advantages that:
the device is used for compensating the elastic deformation of the high-temperature liquid conveying pipeline. When the pipeline expansion joint is used, the elastic deformation of the whole pipeline can be compensated through the deformation of the inner shell and the outer shell.
Compared with the existing device, the device can effectively improve the high-temperature resistance of the expansion joint through the design of multiple layers. The asbestos interlayer in the middle can slow down the temperature change, and can provide certain elastic buffer for the deformation of the inner shell or the outer shell so as to prevent the inner shell or the outer shell from cracking due to severe deformation.
Drawings
FIG. 1 is a schematic structural diagram of a high temperature resistant expansion joint based on multilayer isolation;
FIG. 2 is a schematic diagram of the internal structure of a high temperature resistant expansion joint based on multilayer isolation;
1. the upper pressing block 2, the lower pressing block 3, the elastic compensation component 31, the inner shell 32, the asbestos interlayer 33, the outer shell 4 and the sealing ring.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1-2, the multilayer isolation-based high-temperature-resistant expansion joint comprises an elastic compensation component, wherein an upper pressing block 1 and a lower pressing block 2 are arranged at the upper end and the lower end of the elastic compensation component, the thickness of the upper pressing block 1 is equal to that of the lower pressing block 2, and the upper pressing block 1 is connected with the lower pressing block 2 through bolts.
The elastic compensation component 3 comprises an inner shell 31, an asbestos interlayer 32 and an outer shell 33, and the middle parts of the inner shell 31 and the outer shell 33 are bulged outwards; a steel wire mesh layer is arranged inside the inner shell 31, an annular bulge bent outwards is arranged at the bottom of the outer shell 33, and the annular bulge is positioned between the upper pressing block 1 and the lower pressing block 2; the end part of the lower pressing block is provided with an annular groove, a sealing ring 4 is arranged inside the annular groove, and the sealing ring 4 is abutted against the outer surface of the annular bulge.
The use condition is as follows:
when the pipeline is used all year round, a certain amount of expansion with heat and contraction with cold is generated due to the change of the environmental temperature or the change of the temperature of the internal solution. The expansion and contraction amount can be compensated by the elastic deformation of the inner shell 31 and the outer shell 33, so that the normal use of the pipeline is satisfied.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A high-temperature-resistant expansion joint based on multilayer isolation is characterized by comprising an elastic compensation component, wherein an upper pressing block and a lower pressing block are arranged at the upper end and the lower end of the elastic compensation component respectively; the bottom of the outer shell is provided with an annular bulge bent outwards, and the annular bulge is positioned between the upper pressing block and the lower pressing block; the end part of the lower pressing block is provided with an annular groove, a sealing ring is arranged in the annular groove, and the sealing ring is abutted to the outer surface of the annular bulge.
2. The multilayer-insulation-based high-temperature-resistant expansion joint as claimed in claim 1, wherein the upper pressing block and the lower pressing block are connected through a plurality of bolts.
3. The multilayer insulation based high temperature resistant expansion joint according to claim 2, wherein the number of bolts is eight.
4. The multilayer insulation based high temperature resistant expansion joint according to claim 1, wherein the thickness of the upper compact is equal to the thickness of the lower compact.
5. The multilayer insulation-based high-temperature-resistant expansion joint as claimed in claim 1, wherein the inner shell is provided with a steel wire mesh layer.
6. The multilayer insulation based high temperature resistant expansion joint according to claim 1, wherein the thickness of the asbestos layer is less than the thickness of the inner shell.
7. The high temperature resistant expansion joint based on multilayer insulation of claim 1, wherein the thickness of the asbestos interlayer is less than the thickness of the outer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121078163.3U CN215596701U (en) | 2021-05-19 | 2021-05-19 | High temperature resistant expansion joint based on multilayer is kept apart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121078163.3U CN215596701U (en) | 2021-05-19 | 2021-05-19 | High temperature resistant expansion joint based on multilayer is kept apart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215596701U true CN215596701U (en) | 2022-01-21 |
Family
ID=79873372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121078163.3U Active CN215596701U (en) | 2021-05-19 | 2021-05-19 | High temperature resistant expansion joint based on multilayer is kept apart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215596701U (en) |
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2021
- 2021-05-19 CN CN202121078163.3U patent/CN215596701U/en active Active
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