CN209736900U - Anti-deformation device of flange disc of liquid nitrogen machine - Google Patents
Anti-deformation device of flange disc of liquid nitrogen machine Download PDFInfo
- Publication number
- CN209736900U CN209736900U CN201822117601.7U CN201822117601U CN209736900U CN 209736900 U CN209736900 U CN 209736900U CN 201822117601 U CN201822117601 U CN 201822117601U CN 209736900 U CN209736900 U CN 209736900U
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- CN
- China
- Prior art keywords
- flange
- pressure plate
- central shaft
- bolts
- cone
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 title claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
An anti-deformation device of a flange disc of a liquid nitrogen machine is mainly formed by combining an upper flange, a lower flange, a central shaft, an upper pressure plate, a lower pressure plate, bolts and nuts, wherein the central shaft is fixed in the middle of the lower flange through the bolts, and the upper flange is placed on the lower flange and fixed through the bolts; a cone and a positioning shoulder ring are sequentially placed on a lower flange, an upper pressure plate and a lower pressure plate are further placed on the central shaft and are fastened by a gasket and a nut, and the flange (10), the cone (11) and the positioning shoulder ring (12) are fixedly connected through argon arc welding spot welding respectively; the flange (10) is positioned below the upper flange (2) and above the lower flange, and has the characteristics of simple structure, convenience in use, capability of meeting the use requirement of a flange sealing surface, capability of improving the product quality and the like.
Description
Technical Field
The invention relates to a deformation preventing device for a flange disc of a liquid nitrogen machine, and belongs to the technical field of sealing structures of flange discs in liquid nitrogen machines.
Background
The requirement on the sealing surface of a flange disc of a liquid nitrogen machine is very high, so that the importance of installation of parts inside the liquid nitrogen machine is guaranteed, and when the flange disc is installed, the deformation of the flange surface is large when 3 parts, namely the flange, a cone and a shoulder ring, are welded, so that the sealing requirement cannot be guaranteed. In the prior art, a flange disc of a liquid nitrogen machine is easy to deform due to welding in the installation process, if the deformation is too large in the welding process, the sealing leakage seriously influences the use performance of the liquid nitrogen machine, and finally the gas leakage is caused, so that the equipment cannot run.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the deformation preventing device for the flange disc of the liquid nitrogen machine, which has a simple structure and is convenient to use, can ensure that the welding deformation generated by the flange disc is effectively controlled in the welding process, achieves the purposes of flattening the use of the flange sealing surface without leakage, meets the requirement of subsequent installation sealing, and improves the quality in the installation process.
The invention aims to provide an anti-deformation device of a flange disc of a liquid nitrogen machine, which is mainly formed by combining an upper flange, a lower flange, a central shaft, an upper pressure plate, a lower pressure plate, bolts and nuts, wherein the central shaft is fixed in the middle of the lower flange through the bolts, and the upper flange is placed on the lower flange and fixed by the bolts; place a flange, cone and location shoulder circle in proper order on lower flange the top surface of center pin still placed top board and holding down plate to fasten with packing ring and nut, flange, cone, location shoulder circle weld spot welding fixed connection through argon arc respectively.
Preferably, the method comprises the following steps: the flange 10 is positioned below the upper flange 2 and above the lower flange, the large lower bottom ring of the cone is positioned below the upper flange and above the lower flange, and the small upper bottom ring edge of the positioning shoulder ring is clamped in a concave ring groove between the upper pressure plate and the lower pressure plate and is fastened by a gasket and a nut which are fixed at the upper end part of the central shaft; the upper end of the central shaft is made into a stepped ring groove and is sleeved by holes with different diameters in the middle of the upper pressure plate and the lower pressure plate.
The flange sealing surface sealing device has the characteristics of simple structure, convenience in use, capability of ensuring the use requirement of the flange sealing surface, improvement on the product quality and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will be described in detail below with reference to the following figures: as shown in fig. 1, the deformation preventing device for the flange disc of the liquid nitrogen machine is mainly formed by combining an upper flange 2, a lower flange 1, a central shaft 3, an upper pressure plate 5, a lower pressure plate 4, bolts 8 and nuts 7, wherein the central shaft 3 is fixed in the middle of the lower flange through bolts, and the upper flange 2 is placed on the lower flange 1 and fixed through the bolts 8; a flange 10, a cone 11 and a positioning shoulder ring 12 are sequentially placed on a lower flange 1, an upper pressing plate 5 and a lower pressing plate 4 are further placed on a central shaft 3 and are fastened by a gasket 6 and a nut 7, and the flange 10, the cone 11 and the positioning shoulder ring 12 are fixedly connected through argon arc welding spot welding respectively.
As shown in the figure, the flange 10 is positioned below the upper flange 2, the lower large circle of the cone 11 is positioned below the upper flange 2 and above the lower flange, and the upper small circle edge of the positioning shoulder ring 12 is clamped in the concave circle groove between the upper pressure plate 5 and the lower pressure plate 4 and is fastened by a gasket 6 and a nut 7 which are fixed at the upper end part of the central shaft 3; the upper end part of the central shaft 3 is made into a stepped ring groove and is sleeved by holes with different diameters between the upper pressure plate 5 and the lower pressure plate 4.
When in use, the flange, the cone and the positioning shoulder ring of the product part are sequentially placed in the device for firm fixation, spot welding is firstly carried out, then welding is carried out, and natural cooling is carried out after welding is finished; the invention can control the deformation of 3 parts of the flange, the cone and the positioning shoulder ring after combination welding.
Claims (2)
1. An anti-deformation device of a flange disc of a liquid nitrogen machine is mainly formed by combining an upper flange (2), a lower flange (1), a central shaft (3), an upper pressing plate (5), a lower pressing plate (4), bolts (8) and nuts (7), and is characterized in that the central shaft (3) is fixed in the middle of the lower flange through the bolts, and the upper flange (2) is placed on the lower flange (1) and fixed through the bolts (8); lower flange (1) the higher authority has placed flange (10) cone (11) and location shoulder circle (12) in proper order upper press plate (5) and holding down plate (4) have still been placed to the higher authority of center pin (3) to fasten with packing ring (6) and nut (7), flange (10), cone (11), location shoulder circle (12) respectively through argon arc welding spot welding fixed connection.
2. The deformation preventing device for the flange disc of the liquid nitrogen machine is characterized in that the flange (10) is positioned below the upper flange (2) and above the lower flange, the large lower bottom ring of the cone (11) is positioned below the upper flange and above the lower flange, and the small upper bottom ring edge of the positioning shoulder ring (12) is clamped in a concave ring groove between the upper pressure plate (5) and the lower pressure plate (4) and is fastened by a gasket (6) and a nut (7) which are fixed at the upper end part of the central shaft (3); the upper end part of the central shaft (3) is made into a step ring groove and is sleeved by holes with different diameters between the upper pressure plate (5) and the lower pressure plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117601.7U CN209736900U (en) | 2018-12-17 | 2018-12-17 | Anti-deformation device of flange disc of liquid nitrogen machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117601.7U CN209736900U (en) | 2018-12-17 | 2018-12-17 | Anti-deformation device of flange disc of liquid nitrogen machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209736900U true CN209736900U (en) | 2019-12-06 |
Family
ID=68703668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822117601.7U Active CN209736900U (en) | 2018-12-17 | 2018-12-17 | Anti-deformation device of flange disc of liquid nitrogen machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209736900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570868A (en) * | 2018-12-17 | 2019-04-05 | 杭州杭氧低温液化设备有限公司 | A kind of anti-deformation device of liquid nitrogen machine flange disk |
-
2018
- 2018-12-17 CN CN201822117601.7U patent/CN209736900U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570868A (en) * | 2018-12-17 | 2019-04-05 | 杭州杭氧低温液化设备有限公司 | A kind of anti-deformation device of liquid nitrogen machine flange disk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 799 Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU HANGYANG CRYOGENIC LIQUEFY EQUIPMENT Co.,Ltd. Address before: 311305 No.99, East Ring Road, Qingshanhu street, Lin'an, Hangzhou, Zhejiang Patentee before: HANGZHOU HANGYANG CRYOGENIC LIQUEFY EQUIPMENT Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |