CN203907204U - Vacuuming device of vertical low temperature vacuum thermal insulation gas cylinder - Google Patents
Vacuuming device of vertical low temperature vacuum thermal insulation gas cylinder Download PDFInfo
- Publication number
- CN203907204U CN203907204U CN201420200262.8U CN201420200262U CN203907204U CN 203907204 U CN203907204 U CN 203907204U CN 201420200262 U CN201420200262 U CN 201420200262U CN 203907204 U CN203907204 U CN 203907204U
- Authority
- CN
- China
- Prior art keywords
- vacuum
- low temperature
- vertical low
- wall
- filter screen
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 210000002445 nipple Anatomy 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000012634 fragment Substances 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a vacuuming device of a vertical low temperature vacuum thermal insulation gas cylinder. The vacuuming device comprises a cylindrical vacuum opening mounted at the outer wall of an upper end plate of a casing of an gas cylinder, wherein a vacuum plug is arranged in the vacuum opening; the vacuum plug is sealed with the vacuum opening through a seal ring; a close nipple used for opening and closing the vacuuming is formed in the top surface of the vacuum plug; a circular shaft shoulder is arranged on the outer wall of the vacuum opening and is used for limiting the connection length of vacuuming equipment so that influence on vacuuming technology caused by manual factor can be reduced; a filter screen is arranged at the air inlet end of the vacuum opening; the filter screen is fixed onto the inner wall of the upper end plate of the casing. According to the utility model, scraps of a thermal insulating material can be prevented from being extracted during the machining process to cause the sealing surface to be invalid; the device is simple in overall structure, reliable in performance and convenient in mounting.
Description
Technical field
The utility model relates to vertical low temperature vacuum insulation gas cylinder, refers to particularly a kind of vertical low temperature vacuum insulation vacuum extractor of gas cylinders.
Background technique
In vertical low temperature vacuum insulation gas cylinder, shell upper cover is provided with and vacuumizes member, this vacuumizes member is the parts that vaccum-pumping equipment vacuumizes gas cylinder interlayer, gas cylinder mezzanine space is reached and maintain vacuum state by vacuumizing, thereby reduce to import into the heat of cryogenic liquide, institute's load medium emission loss is reduced.Vacuumize the requirement that member should be able to meet gas cylinder interlayer vacuum-pumping, in the time vacuumizing, bleed-off passage can be opened, and can close close mezzanine space after exhausting vacuum, and vacuum can be filtered the thermoinsulation material of gas cylinder mezzanine space fragmentation, the installation convenient welding of vacuum component, sealing is reliable.
Prior art adopts the vacuum port of straight tube directly to stretch into the structure of gas cylinder upper cover conventionally, vacuum orifice is directly welded in gas cylinder upper cover outer wall in the time of welding, the conformity of weld size and product is difficult to ensure, vacuum orifice stretches into the vacuum orifice that stretches into end socket when gas cylinder shell upper cover causes assembling and is pressed in above Vacuum thermal insulating material, cause heat insulation layer fragmentation, reduce the heat-insulating property of material, vacuum orifice joint of vaccum-pumping equipment in the time vacuumizing does not have axially locating benchmark, the efficiency that impact vacuumizes, and in the time vacuumizing, because can being evacuated unit, extracts out the fragment that is difficult to avoid in heat insulation layer course of working, the fragment of extracting out rests on vacuum port sealing surface and causes seal failure.
Summary of the invention
The purpose of this utility model will overcome exactly above-mentioned vertical low temperature vacuum insulation gas cylinder and in the time vacuumizing, easily cause the defects such as heat insulation layer fragmentation, efficiency are low, seal failure, and a kind of vertical low temperature vacuum insulation vacuum extractor of gas cylinders of simple in structure, reliable performance is provided.
For achieving the above object, the vertical low temperature vacuum insulation vacuum extractor of gas cylinders that the utility model is designed, special way is: comprise the tubular vacuum port that is arranged on gas cylinder shell upper cover outer wall, in described vacuum port, be provided with vacuum stopper, described vacuum stopper is by seal ring and vacuum port sealing, described vacuum stopper end face is provided with and vacuumizes the threaded coupling that opens and closes use, described vacuum port outer wall is provided with the annular shaft shoulder, can limit the connecting length of vaccum-pumping equipment, easy-to-operat reduces the impact of artificial factor on vacuum pumping technique; Described vacuum port inlet end is provided with filter screen, and described filter screen is fixed on shell upper cover inwall.Avoid the thermoinsulation material fragment in course of working to be drawn out of, cause sealing surface to lose efficacy.
Preferably, described shell upper cover outer wall is provided with counterbore, and described vacuum port bottom is fixed in counterbore.Counterbore has facilitated the positioning welding of vacuum port, and this structure is because head opening is less, and Seal Head Strength is guaranteed; When vacuum port welding, do not stretch into end socket inwall, while ensureing assembling, vacuum port can not squeeze broken thermoinsulation material, and product performance are guaranteed.
Further, described vacuum stopper outer wall is provided with twice annular seal groove, and described seal ring is positioned in seal groove, is that sealability is better, at utmost ensures degree of vacuum.In order further to increase sealability, on the sealing surface of described seal ring, be provided with seal gease coating.
Further, described filter screen is columnar structured, and wherein opening of sieve is circular hole.
Again further, described threaded coupling is nonstandard threaded coupling, only has production unit could dismantle this part, makes gas cylinder vacuum state controlled.
Again further, described strainer filtering face area is not less than the ventilation bore of vacuum port.
The utility model has the advantage of: offer counterbore face by gas cylinder upper cover, vacuum port axially locating is guaranteed, shaft shoulder face on the outer surface of vacuum port, improve the efficiency vacuumizing, be welded on the filter screen of gas cylinder upper cover, avoid the sealability of chips affect sealing surface, the nonstandard screw thread that vacuum stopper upper-end surface arranges, ensure that gas cylinder vacuum state is controlled, in addition, also there is simple in structure, reliable performance, feature easy for installation.
Brief description of the drawings
Fig. 1 is a kind of vertical low temperature vacuum insulation vacuum extractor of gas cylinders structural representation.
Fig. 2 is the R portion structure for amplifying schematic diagram in Fig. 1.
Fig. 3 is the structure for amplifying schematic diagram of gas cylinder upper cover in Fig. 1.
Fig. 4 is the structure for amplifying schematic diagram of vacuum port in Fig. 1.
Fig. 5 is the structure for amplifying schematic diagram of vacuum stopper in Fig. 1.
Fig. 6 is the structure for amplifying schematic diagram of filter screen in Fig. 1.
Wherein: shell upper cover 1, counterbore 1a, vacuum port 2, shaft shoulder 2a, vacuum stopper 3, threaded coupling 3a, filter screen 4, opening of sieve 4a, seal ring 5.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Vertical low temperature vacuum insulation vacuum extractor of gas cylinders shown in figure, comprises the tubular vacuum port 2 that is arranged on gas cylinder shell upper cover 1 outer wall, and shell upper cover 1 outer wall is provided with counterbore 1a, and vacuum port 2 bottoms are fixed in counterbore 1a.Counterbore 1a has facilitated the positioning welding of vacuum port, and this structure is because head opening is less, and shell upper cover 1 intensity is guaranteed; When vacuum port 2 welds, do not stretch into end socket inwall, while ensureing assembling, vacuum port 2 can not squeeze broken thermoinsulation material, and product performance are guaranteed.In vacuum port 2, be provided with vacuum stopper 3, vacuum stopper 3 outer walls are provided with two seals groove, in groove, in seal groove, be placed with seal ring, vacuum stopper is by seal ring 5 and vacuum port sealing, when assembling, sealing surface at seal ring 5 is coated seal gease, makes sealing effect better, at utmost ensures internal vacuum; Vacuum stopper 3 end faces are provided with and vacuumize the nonstandard threaded coupling 3a that opens and closes use, only have production unit could dismantle this part, make gas cylinder vacuum state controlled.Vacuum port 2 outer walls are provided with annular shaft shoulder 2a, described tubular vacuum port 2 inlet ends are provided with circle tube leaching net 4, described filter screen 4 is fixed on shell upper cover 1 inwall, and the opening of sieve 4a of filter screen 4 is circular hole, and filter screen 4 filtering surface areas are not less than the ventilation bore of vacuum port 2.
When assembling, before vacuum port 2 and shell upper cover 1 weld, the counterbore face 1a that first vacuum port 2 is placed in to shell upper cover 1 is upper, with plug location, keeps vacuum port coaxial with the opening of end socket 1; After vacuum port 2 has welded with shell upper cover 1, welding filter screen 4 is fixed on upper cover 1 inwall, ensures that filter screen is coaxial with upper cover 1 when welding; After filter screen 4 has welded, seal ring 5 is enclosed within the seal groove of vacuum stopper 3, on the sealing surface of seal ring 5, coats vacuum grease, then fill in 2 li of vacuum ports, complete the assembling of vacuum component.Wherein, the shaft shoulder 2a of vacuum port 2 determines by the interface of vaccum-pumping equipment apart from the distance of its upper-end surface, vacuum port 2 vacuumize latus rectum by manufacturing process determination, the ventilation bore of the not little vacuum port 2 of small opening area sum of filter screen 4.
Claims (8)
1. a vertical low temperature vacuum insulation vacuum extractor of gas cylinders, it is characterized in that: comprise the tubular vacuum port (2) that is arranged on gas cylinder shell upper cover (1) outer wall, in described vacuum port (2), be provided with vacuum stopper (3), described vacuum stopper (3) is by seal ring (5) and vacuum port (2) sealing, described vacuum stopper (3) end face is provided with and vacuumizes the threaded coupling (3a) that opens and closes use, described vacuum port (2) outer wall is provided with the annular shaft shoulder (2a), described vacuum port (2) inlet end is provided with filter screen (4), described filter screen (4) is fixed on shell upper cover (1) inwall.
2. vertical low temperature vacuum insulation vacuum extractor of gas cylinders according to claim 1, it is characterized in that: described shell upper cover (1) outer wall is provided with counterbore (1a), described vacuum port (2) bottom is fixed in counterbore (1a).
3. vertical low temperature vacuum insulation vacuum extractor of gas cylinders according to claim 2, is characterized in that: described vacuum stopper (3) outer wall is provided with annular seal groove, and described seal ring (5) is positioned in seal groove.
4. vertical low temperature vacuum insulation vacuum extractor of gas cylinders according to claim 3, is characterized in that: described seal ring (5) has two, is placed on respectively in the two seals groove of described vacuum stopper (3) outer wall.
5. vertical low temperature vacuum insulation vacuum extractor of gas cylinders according to claim 4, is characterized in that: on the sealing surface of described seal ring (5), be provided with seal gease coating.
6. vertical low temperature vacuum insulation vacuum extractor of gas cylinders according to claim 5, is characterized in that: described filter screen (4) is for columnar structured, and wherein opening of sieve (4a) is circular hole.
7. according to the vertical low temperature vacuum insulation vacuum extractor of gas cylinders described in any one in claim 1～6, it is characterized in that: described threaded coupling (3a) is nonstandard threaded coupling.
8. according to the vertical low temperature vacuum insulation vacuum extractor of gas cylinders described in any one in claim 1～6, it is characterized in that: described filter screen (4) filtering surface area is not less than the ventilation bore of vacuum port (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200262.8U CN203907204U (en) | 2014-04-23 | 2014-04-23 | Vacuuming device of vertical low temperature vacuum thermal insulation gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200262.8U CN203907204U (en) | 2014-04-23 | 2014-04-23 | Vacuuming device of vertical low temperature vacuum thermal insulation gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203907204U true CN203907204U (en) | 2014-10-29 |
Family
ID=51781482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200262.8U Expired - Lifetime CN203907204U (en) | 2014-04-23 | 2014-04-23 | Vacuuming device of vertical low temperature vacuum thermal insulation gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203907204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944210A (en) * | 2021-01-28 | 2021-06-11 | 长春致远新能源装备股份有限公司 | LNG gas cylinder vacuum port protection subsides |
-
2014
- 2014-04-23 CN CN201420200262.8U patent/CN203907204U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944210A (en) * | 2021-01-28 | 2021-06-11 | 长春致远新能源装备股份有限公司 | LNG gas cylinder vacuum port protection subsides |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |