CN104771968B - Cryogenic system turbo-expander detachably high accuracy profound hypothermia filter - Google Patents
Cryogenic system turbo-expander detachably high accuracy profound hypothermia filter Download PDFInfo
- Publication number
- CN104771968B CN104771968B CN201510121708.7A CN201510121708A CN104771968B CN 104771968 B CN104771968 B CN 104771968B CN 201510121708 A CN201510121708 A CN 201510121708A CN 104771968 B CN104771968 B CN 104771968B
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- Prior art keywords
- filter element
- filter
- shell
- boss
- mouth
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- 230000002631 hypothermal effect Effects 0.000 title claims abstract description 17
- 238000012856 packing Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052683 pyrite Inorganic materials 0.000 claims description 4
- 239000011028 pyrite Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a kind of cryogenic system turbo-expander detachably high accuracy profound hypothermia filter, include shell, filter element, seal several parts compositions such as capping, external seal pad, interior gasket seal, spring, hex bolts, packing ring.The invention provides No leakage under a kind of profound hypothermia (below 80K), detachably, high-precision filter, and have the advantages that resistance is little, the safe operation for cryogenic system turbo-expander provides important leverage.
Description
Technical field
The present invention relates to cryogenic system turbo-expander field, specifically a kind of cryogenic system turbo-expander is used can
Dismounting high accuracy profound hypothermia filter.
Background technology
In large-scale cryogenic system, turbo-expander is its core component, and the safe operation of helium turboexpander is particularly
Important, the most just include the requirement that the size of its inlet gas solid impurity particle size is had stringent, some turbines
Decompressor requires to be not more than 3 μm, and requires that resistance is little, so the design of low-temperature filter is the most particularly important here.Tradition mistake
The flange seal of filter easily leaks under profound hypothermia (80K), and uses the filter element of the filter of full welded seal inconvenient
Disassembly, cleaning are maintained, it is therefore desirable to there is one not leak under profound hypothermia (below 80K), resistance is little, and precision is high, and filter element
Removable filter device again.
It is deep by detachable high accuracy that summary of the invention it is an object of the invention to provide a kind of cryogenic system turbo-expander
Low-temperature filter, to solve the problem that in prior art cryogenic system turbo-expander, filter exists.
In order to achieve the above object, the technical solution adopted in the present invention is:
Cryogenic system turbo-expander detachably high accuracy profound hypothermia filter, it is characterised in that: include shell,
Described cover top portion has installing port and is fitted around the annular groove of mouth, and cover top portion outer wall connects the ring being fitted around mouth
Platform, land has multiple screwed hole, and outer casing bottom connection is provided with air vent, and the connection of shell one upper lateral part is provided with air inlet
Mouthful, also including sealing capping, filter element, described sealing covers in cover top portion, and sealing closure base portion forms outside snapping in
Annular table in roof portion annular groove, and it is provided with external seal pad bottom annular table and between cover top portion annular groove bottom land, seal
Capping is provided with multiple and cover top portion sidewall land upper screwed hole position tapped through hole one to one near edge placement,
Sealing in capping and be screwed into hex bolts respectively in each tapped through hole, hex bolts is each passed through tapped through hole in sealing capping
And be screwed in the screwed hole that position in land is corresponding, it is provided with between bolt cap and the sealing capping of each hex bolts and is enclosed within hexagonal spiral shell
Packing ring on bolt, described filter element is arranged in the enclosure, and cartridge top is closed and cartridge top center is provided with the boss raised up,
Boss top is provided with process Installation screwed hole in boss, and cartridge top is provided around the annular groove of boss, filter element top against boss
Being cased with spring on portion's boss, spring bottom end is arranged in cartridge top annular groove, and described sealing closure base portion center has groove, bullet
Spring top is arranged in sealing closure base portion central recess, is communicated with downwardly convex filter element mouth, filter element mouth bottom described filter element
Stretch in outer casing bottom air vent, and bottom filter element and between shell inner bottom part, be provided with the interior gasket seal being enclosed within filter element mouth.
Described cryogenic system turbo-expander detachably high accuracy profound hypothermia filter, it is characterised in that: described
Interior gasket seal use teflon gasket, external seal pad use annealing oxygen-free copper pad；Hex bolts material
Matter is pyrite, and shell and packing ring material use 304 rustless steels.
Seal capping to be connected with the screw thread on filter housing by 6 unthreaded hole hex bolts, the packing ring of circumference, pass through
Compressing external seal gasket seal, prevent from leaking outside, the most also can prevent leakage, its principle is: hex bolts material is Huang
Copper, and packing ring, shell, sealing capping material are 304 rustless steels, utilize the most particularly receipts of pyrite under profound hypothermia
The characteristic that shrinkage is bigger than 304 stainless shrinkage factors, it is ensured that the most more can lock sealing pad, thus ensure seal capping
Place does not leaks.External seal pad uses oxygen-free copper (annealing) pad, has good sealing property, flexibility good, for nothing
Leakage provides guarantee.
Filter element of the present invention is installed and is sealed with gasket seal in spring compression in the enclosure, and interior gasket seal uses polytetrafluoroethyl-ne
Alkene pad, low temperature resistant, good seal performance.Interior gasket seal (teflon gasket) can produce contraction, at this moment bullet
Compensate for compressing when the spring energy of spring is mentioned, it is thus possible to ensure not leak under low temperature.
Filter element uses rustless steel (304) collapsible net filter element, claimed accuracy 3 μm, has filter area big, and resistance is little
Feature, thus meet filter resistance requirement.
The cryogenic system turbo-expander of the present invention can also be applied to it with detachable high accuracy profound hypothermia filter
He uses aspect.
The invention have the advantage that
The present invention solves a difficult problem for easily leakage under conventional filter profound hypothermia (below 80K), and this filter is removable
Unloading, it is simple to routine cleaning maintains, and it is high to have precision, the feature that resistance is little, the safe operation for turbo-expander provides weight
Ensure.
Accompanying drawing explanation
Fig. 1 filter population structure schematic diagram.
Fig. 2 gasket construction schematic diagram.
Fig. 3 seals closure construction schematic diagram.
Fig. 4 shell mechanism schematic diagram.
Fig. 5 external seal gasket construction schematic diagram.
Sheet gasket structure schematic diagram in Fig. 6.
Fig. 7 filter cartridge construction schematic diagram.
Detailed description of the invention
As shown in Fig. 1-Fig. 7, cryogenic system turbo-expander detachably high accuracy profound hypothermia filter, outside including
Shell 1, shell 1 top has installing port 2 and is fitted around the annular groove 3 of mouth 2, and the connection of shell 1 top exterior walls is fitted around mouth 2
Land 4, land 4 has multiple screwed hole 5, bottom shell 1, connection is provided with air vent 6, shell 1 one upper lateral part connection peace
Equipped with air inlet 7, also include sealing capping 8, filter element 9, seal capping 8 and cover at shell 1 top, seal to become bottom capping 8
Type has setting between the annular table 10 snapped in shell 1 top annular groove 3, and bottom annular table 10 and shell 1 top annular groove 3 bottom land
There is external seal pad 11, seal in capping 8 and edge placement is provided with multiple and shell 1 top sidewall land 4 upper screwed hole 5
Tapped through hole 12 one to one, position, seal in capping 8 and have been screwed into hex bolts 13, hexagonal respectively in each tapped through hole 12
Bolt 13 is each passed through tapped through hole 12 being screwed in the screwed hole 5 that in land 4, position is corresponding, each hexagonal in sealing capping 8
Being provided with, between bolt cap and the sealing capping 8 of bolt 13, the packing ring 14 being enclosed within hex bolts 13, filter element 9 is arranged in shell 1, filter
Core 9 top seal and filter element 9 top center are provided with the boss 15 raised up, and boss 15 top is provided with technique peace in boss 15
Dress screwed hole 16, filter element 9 top is provided around the annular groove 17 of boss 15 against boss 15, filter element 9 top boss 15 is cased with bullet
Spring 18, spring 18 bottom is arranged in filter element 9 top annular groove 17, seals capping 8 bottom centre and has groove 19, spring 18 top
Being arranged in sealing capping 8 bottom centre's grooves 19, be communicated with downwardly convex filter element mouth 20 bottom filter element 9, filter element mouth 20 is stretched
Enter in shell 1 base bleed mouth 6, and bottom filter element 9 and be provided with the interior sealing gasket being enclosed within filter element mouth 20 between shell 1 inner bottom part
Sheet 21.
Interior gasket seal 21 uses teflon gasket, external seal pad 11 to use the oxygen-free copper pad of annealing；
Hex bolts 13 material is pyrite, and shell 1 and packing ring 14 material use 304 rustless steels.
The present invention, under profound hypothermia (below 80K), does not reveals, and filter element is detachable, it is simple to routine cleaning maintains,
There is volume little, the little feature of resistance, significantly facilitate installation and safeguard；This filter filtering accuracy, up to 3 μm, fully meets helium low temperature
The requirement to inlet gas solid particulate filters of the system turbo-expander.
The present invention breaks through the method easily revealed under conventional filter profound hypothermia (below 80K), solves cryogenic system
Turbo-expander is high to air intake filter filtering accuracy, and resistance is little, and is easy to a difficult problem for clean and maintenance, substantially increases helium turbine
The safety in operation of decompressor, greatly facilitates the periodic maintenance of helium turboexpander.
Present invention accomplishes cryogenic system turbo-expander to inlet air filtration No leakage, precision is high, resistance is little and filter element
It is easy to the requirement of routine cleaning, substantially increases the safety that helium turboexpander runs, greatly facilitate helium turboexpander
Periodic maintenance.
When the present invention assembles, by interior gasket seal, filter element, (there is process Installation screwed hole on filter element, be screwed in loading shell
Process Installation bolt, it is simple to install), take off process Installation bolt, then load onto spring in filter element upper end, at the seal groove of shell
Interior loading external seal pad, then loads onto sealing capping, by sealing 6 unthreaded hole bolts, packing ring and the filtration of capping circumference
Screw thread on device shell is connected, and is finally uniformly tightened by all bolts and gets final product (needing symmetry to tighten).Such a cryogenic system
Turbo-expander just completes with detachable high accuracy profound hypothermia filter.
Claims (1)
1. cryogenic system turbo-expander detachably high accuracy profound hypothermia filter, it is characterised in that: include shell, institute
Stating cover top portion have installing port and be fitted around the annular groove of mouth, cover top portion outer wall connects the land being fitted around mouth,
Having multiple screwed hole in land, outer casing bottom connection is provided with air vent, and the connection of shell one upper lateral part is provided with air inlet, also
Including sealing capping, filter element, described sealing covers in cover top portion, and sealing closure base portion forms and snaps in cover top portion
Annular table in annular groove, and bottom annular table and between cover top portion annular groove bottom land, it is provided with external seal pad, seal in capping
Edge placement is provided with multiple and cover top portion sidewall land upper screwed hole position tapped through hole one to one, seals envelope
Being screwed into hex bolts in lid in each tapped through hole respectively, hex bolts is each passed through tapped through hole being screwed in sealing capping
In the screwed hole that in land, position is corresponding, it is provided with between bolt cap and the sealing capping of each hex bolts and is enclosed within hex bolts
Packing ring, described filter element is arranged in the enclosure, and cartridge top is closed and cartridge top center is provided with the boss raised up, boss top
Portion is provided with process Installation screwed hole in boss, and cartridge top is provided around the annular groove of boss, cartridge top boss against boss
On be cased with spring, spring bottom end is arranged in cartridge top annular groove, and described sealing closure base portion center has groove, spring top
It is arranged in sealing closure base portion central recess, is communicated with downwardly convex filter element mouth bottom described filter element, outside filter element mouth stretches into
In shell base bleed mouth, and bottom filter element and between shell inner bottom part, it is provided with the interior gasket seal being enclosed within filter element mouth；Described
Interior gasket seal uses teflon gasket, external seal pad to use the oxygen-free copper pad of annealing；Hex bolts material
304 rustless steels are used for pyrite, shell and packing ring material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510121708.7A CN104771968B (en) | 2015-03-19 | 2015-03-19 | Cryogenic system turbo-expander detachably high accuracy profound hypothermia filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510121708.7A CN104771968B (en) | 2015-03-19 | 2015-03-19 | Cryogenic system turbo-expander detachably high accuracy profound hypothermia filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104771968A CN104771968A (en) | 2015-07-15 |
| CN104771968B true CN104771968B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510121708.7A Active CN104771968B (en) | 2015-03-19 | 2015-03-19 | Cryogenic system turbo-expander detachably high accuracy profound hypothermia filter |
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| Country | Link |
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| CN (1) | CN104771968B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112018000527T5 (en) * | 2017-01-25 | 2019-10-10 | Cummins Filtration Ip, Inc. | ADVANCED THREADED ADAPTER FOR THREADLESS COAT |
| CN108970255A (en) * | 2018-06-14 | 2018-12-11 | 何志颖 | A kind of vehicular air cleaning unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001248964A (en) * | 2000-03-08 | 2001-09-14 | Sumisho Fine Gas Kk | Apparatus and method for gas refining |
| CN2581911Y (en) * | 2002-04-01 | 2003-10-22 | 杭州临安天城机电制造有限公司 | Efficient freezing drier |
| CN2899901Y (en) * | 2006-03-31 | 2007-05-16 | 李志臣 | Water filter for low temperature heating system |
| CN101008595A (en) * | 2007-01-25 | 2007-08-01 | 上海交通大学 | Experimental equipment for testing characteristic of liquid helium filter |
| CN203196490U (en) * | 2013-03-25 | 2013-09-18 | 林德工程（杭州）有限公司 | Improved structure of ultralow-temperature high-pressure filter core of air-separation expander |
-
2015
- 2015-03-19 CN CN201510121708.7A patent/CN104771968B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001248964A (en) * | 2000-03-08 | 2001-09-14 | Sumisho Fine Gas Kk | Apparatus and method for gas refining |
| CN2581911Y (en) * | 2002-04-01 | 2003-10-22 | 杭州临安天城机电制造有限公司 | Efficient freezing drier |
| CN2899901Y (en) * | 2006-03-31 | 2007-05-16 | 李志臣 | Water filter for low temperature heating system |
| CN101008595A (en) * | 2007-01-25 | 2007-08-01 | 上海交通大学 | Experimental equipment for testing characteristic of liquid helium filter |
| CN203196490U (en) * | 2013-03-25 | 2013-09-18 | 林德工程（杭州）有限公司 | Improved structure of ultralow-temperature high-pressure filter core of air-separation expander |
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| Publication number | Publication date |
|---|---|
| CN104771968A (en) | 2015-07-15 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 230001 no.181 Gucheng Road, shiyangang Township, Hefei City, Anhui Province Patentee after: INSTITUTE OF PLASMA PHYSICS CHINESE ACADEMY OF SCIENCES Address before: 230031 Shushan Lake Road, Shushan District, Anhui, China, No. 350, No. Patentee before: INSTITUTE OF PLASMA PHYSICS CHINESE ACADEMY OF SCIENCES |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240423 Address after: 230031 Building 2, Dongpu Island, Hefei City, Anhui Province Patentee after: Hefei Science Island Holdings Co.,Ltd. Country or region after: China Address before: 230001 no.181, Gucheng Road, sanzigang Township, Luyang District, Hefei City, Anhui Province Patentee before: INSTITUTE OF PLASMA PHYSICS CHINESE ACADEMY OF SCIENCES Country or region before: China |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240617 Address after: Room 799-5, 7th Floor, Building A3A4, Zhong'an Chuanggu Science and Technology Park, No. 900 Wangjiang West Road, Hefei High tech Zone, China (Anhui) Pilot Free Trade Zone, Hefei City, Anhui Province, 230088 Patentee after: Fusion New Energy (Anhui) Co.,Ltd. Country or region after: China Address before: 230031 Building 2, Dongpu Island, Hefei City, Anhui Province Patentee before: Hefei Science Island Holdings Co.,Ltd. Country or region before: China |