CN207065070U - Low temperature atmospheric tank and its manhole structure - Google Patents
Low temperature atmospheric tank and its manhole structure Download PDFInfo
- Publication number
- CN207065070U CN207065070U CN201720874136.4U CN201720874136U CN207065070U CN 207065070 U CN207065070 U CN 207065070U CN 201720874136 U CN201720874136 U CN 201720874136U CN 207065070 U CN207065070 U CN 207065070U
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- cylinder
- manhole
- circular plate
- pressurd vessel
- inner pressurd
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- 238000009413 insulation Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 208000001034 Frostbite Diseases 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model proposes a kind of low temperature atmospheric tank and its manhole structure, the low temperature atmospheric tank includes inner pressurd vessel and outer container, and the manhole structure includes cylinder, manhole cover and heat-insulation layer；Cylinder is located at the top of low temperature atmospheric tank, and is penetrated by the outside of the outer container to the inside of the inner pressurd vessel downwards, and the bottom of the cylinder is fixedly connected with inner pressurd vessel, and compensator is connected between cylinder and outer container；Manhole cover is removably sealedly attached to the upper end port of the cylinder；Heat-insulation layer is coated on the exposed surface of the manhole cover and cylinder with to manhole cover and cylinder insulation.The utility model manhole structure, cylinder directly penetrates the inside of inner pressurd vessel, staff is enabled to enter directly into inner pressurd vessel by cylinder, avoid and the problem of construction is destroyed and restored to the cold insulation system of storage tank, reduce the cost of overhaul, economic benefit is huge, and design is simple, easy for construction.
Description
Technical field
A kind of low temperature atmospheric tank for being used to store cryogenic liquid is the utility model is related to, the utility model further relates to low temperature
The manhole structure of atmospheric storage tank.
Background technology
In recent years, low temperature liquid market is increasingly hot, and the dosage such as liquid oxygen, liquid argon, liquid nitrogen is increased sharply, air separation products profit
It is very considerable, as country improves the requirement to environmental protection, increase the input and supporting dynamics to clean energy resource, low temperature
LNG sales volumes are also significantly increased.The storage of these cryogenic liquids be unable to do without low temperature atmospheric tank.In order to strengthen the integrality pipe of storage tank
Reason, makes storage tank be in slave mode, improves reliability, the extension device cycle of operation of storage tank, need to carry out periodic inspection to storage tank.
The manhole of usual low temperature atmospheric tank, which is set, sees Fig. 1.Outer container manhole 101 is provided with outer container 102, on inner pressurd vessel 104
Provided with inner pressurd vessel manhole 105, when storage tank maintenance, container nitrogen system 106 need to be first closed, opens outer container manhole 101, appearance
Device heat-insulation layer 103 is cleaned out, then opens inner pressurd vessel manhole 105, and personnel are allowed for access internal overhaul.Needed again after the completion of maintenance
Vessel insulation layer 103 is constructed；Vessel insulation layer 103 needs to be purged for a long time after the completion of constructing.Such a existing skill
Manhole in art is inconvenient for use so that storage tank each time between overhauls(TBO) is long and costly.
Above- mentioned information is only used for strengthening the understanding to background of the present utility model disclosed in the background section, because
This it can include not forming the information to prior art known to persons of ordinary skill in the art.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of manhole knot easy to use
Structure.
Additional aspect and advantage of the present utility model will be set forth in part in the description, and partly will be from retouching
It is apparent from stating, or can be by practice of the present utility model and acquistion.
According to one side of the present utility model, a kind of manhole structure, for low temperature atmospheric tank, the low-temperature atmosphere-pressure storage
Tank includes inner pressurd vessel and outer container, and the manhole structure includes cylinder, manhole cover and heat-insulation layer；Cylinder, located at low-temperature atmosphere-pressure
The top of storage tank, and being penetrated by the outside of the outer container to the inside of the inner pressurd vessel downwards, the bottom of the cylinder with it is interior
Container is fixedly connected, and compensator is connected between cylinder and outer container；Manhole cover, removably it is sealedly attached to the cylinder
Upper end port；Heat-insulation layer, the exposed surface of the manhole cover and cylinder is coated on to manhole cover and cylinder insulation.
According to an embodiment of the present utility model, inner pressurd vessel retainer is provided between the cylinder and inner pressurd vessel, it is described
Inner pressurd vessel retainer includes the first Circular Plate, the second Circular Plate and the circle being welded between the first Circular Plate and the second Circular Plate
Shell ring, first Circular Plate and the second Circular Plate are respectively welded in the outer surface of the inner pressurd vessel and inner surface, the cylinder
Outer wall mutually welded with the first Circular Plate and the second Circular Plate；
Be provided with outer container retainer between the cylinder and outer container, the outer container retainer include the 3rd Circular Plate,
4th Circular Plate and the cylinder section being welded between the 3rd Circular Plate and the 4th Circular Plate, the 3rd Circular Plate and the 4th circle
Ring flat-plate is respectively welded is provided with upper sealing plate and lower envelope in the outer surface of the outer container and inner surface, the outer surface of the cylinder
Plate, the upper sealing plate are mutually welded with the cylinder, and the compensator is sheathed between the upper sealing plate of the cylinder and lower shrouding, and
The upper and lower ends of compensator are mutually welded with upper sealing plate and lower shrouding respectively, and the lower shrouding can live above and below relatively described cylinder
Dynamic, the outer wall of the compensator mutually welds with the outer container retainer.
According to an embodiment of the present utility model, cold and heat insulation material is filled between the outer wall of the compensator and cylinder
Material.
According to an embodiment of the present utility model, the position of the lower shrouding is less than the 4th Circular Plate.
According to an embodiment of the present utility model, the top of the cylinder is provided with manhole flange, and the manhole cover is fixed
The manhole flange is connected to, and gasket seal is provided between manhole cover and manhole flange.
According to an embodiment of the present utility model, the compensator is the bellows being sheathed on the cylinder.
According to an embodiment of the present utility model, it is pre-stretched before the compensator welding.
According to an embodiment of the present utility model, the cylinder is vertically arranged at the top of the low temperature atmospheric tank.
According to an embodiment of the present utility model, the axis of the cylinder and the inner pressurd vessel and the axis weight of outer container
Close.
According to other side of the present utility model, a kind of low temperature atmospheric tank, including inner pressurd vessel and outer container, also wrap
Include above-mentioned manhole structure.
As shown from the above technical solution, it is the advantages of the utility model with good effect：
The utility model manhole structure, cylinder directly penetrate the inside of inner pressurd vessel so that staff can be straight by cylinder
Connect and enter inner pressurd vessel, avoid and the problem of construction is destroyed and restored to the cold insulation system of storage tank, reduce the cost of overhaul,
Economic benefit is huge, and design is simple, easy for construction.Meanwhile during routine use, cylinder and manhole cover quilt
Heat-insulation layer is coated, and will not conduct heat, can ensure evaporation rate index of the storage tank in normal operation, will not frostbite in tank body
The staff of the contact cylinder at top.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the present utility model will
Become readily apparent from.
Fig. 1 is the structural representation of the low temperature atmospheric tank of prior art；
Fig. 2 is schematic diagram of the manhole structure of the embodiment of the utility model one when being installed on low temperature atmospheric tank；
Fig. 3 is the structural representation of the inner pressurd vessel retainer in Fig. 2；
Fig. 4 is the structural representation of the outer container retainer in Fig. 2.
In figure：1st, gasket seal；2nd, heat-insulation layer；3rd, manhole cover；4th, fastener；5th, manhole flange；6th, upper sealing plate；7th, compensate
Device；8th, cold and heat insulation material；9th, outer container retainer；91st, the 3rd Circular Plate；92nd, cylinder section；93rd, the 4th Circular Plate；10th, it is outer
Container；11st, lower shrouding；12nd, cylinder；13rd, inner pressurd vessel；14th, inner pressurd vessel retainer；141st, the first Circular Plate；142nd, cylinder section；
143rd, the second Circular Plate；101st, outer container manhole；102nd, outer container；103rd, vessel insulation layer；104th, inner pressurd vessel；105th, inner pressurd vessel
Manhole；106th, container nitrogen system.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that this practicality is new
The design of example embodiment fully and completely, and will be comprehensively communicated to those skilled in the art by type.Identical in figure
Reference represents same or similar structure, thus will omit their detailed description.
Referring to Fig. 2 to Fig. 4, the utility model embodiment discloses a kind of manhole structure, and the manhole structure is used for low temperature
On atmospheric storage tank, wherein low temperature atmospheric tank includes inner pressurd vessel 13 and outer container 10.Manhole structure of the present utility model includes cylinder
Body 12, manhole cover 3 and heat-insulation layer 2.
The cylinder 12 is arranged on the top of low temperature atmospheric tank, and by outer container 10 outside downward through to inner pressurd vessel 13
Inside.The cylinder 12 is generally VERTICAL TUBE, and it is vertically arranged in the top of low temperature atmospheric tank, also, the cylinder
12 axis may be configured as overlapping with the axis of the inner pressurd vessel 13 and outer container 10.When cylinder 12 is in open mode, dimension
The personnel of repairing can enter the inside of inner pressurd vessel 13 by the cylinder 12, and inner pressurd vessel 13 is overhauled.Do the top of cylinder 12
Manhole flange 5, the substantially flat cover of manhole cover 3 can be set, and the manhole cover 3 is fixedly connected on manhole flange 5 by fastener 4
On, and set gasket seal 1 to be sealed between manhole cover 3 and manhole flange 5.Heat-insulation layer 2 be arranged on manhole cover 3 and
On the exposed surface of cylinder 12, manhole cover 5 and cylinder 12 can be so incubated.
The bottom of cylinder 12 is fixedly connected with inner pressurd vessel 13, and compensator 7 is then provided between cylinder 12 and outer container 10.
Wherein, the connected mode between cylinder 12 and inner pressurd vessel 13 is unlimited, can be carried out by welding, bolt connection etc..In this implementation
In mode, welded between the cylinder 12 and inner pressurd vessel 13.Cylinder 12 can directly weld with the inner pressurd vessel 13, can also be by interior
Vessel switchover frame 14 is attached.Referring to Fig. 3, the inner pressurd vessel retainer 14 is arranged between cylinder 12 and inner pressurd vessel 13, including
First Circular Plate 141, the second Circular Plate 143 and cylinder section 142.First Circular Plate 141 and the second Circular Plate 143 are respectively welded
In the outer surface of inner pressurd vessel 13 and inner surface, and cylinder section 142 is arranged between the first Circular Plate 141 and the second Circular Plate 143
And welded with the first Circular Plate 141 and the second Circular Plate 143.The outer wall of cylinder 12 and the first Circular Plate 141 and the second annulus
The phase of plate 143 is welded, and welding position uses the form of complete penetraction and fusion in welding, and carries out ray detection.By setting the inner pressurd vessel retainer, the
When one Circular Plate 141 and the second Circular Plate 143 are welded with cylinder 12, weld strength and stability can be effectively improved, and
And it is easier to realize complete penetraction and fusion in welding.
It can be attached between the cylinder 12 and compensator 7 by forms such as welding, bolt connections.In present embodiment
In, compensator 7 is the bellows being set on cylinder 12 of tubular structure, and it has undulatory extensible position.In cylinder
Upper sealing plate 6 and lower shrouding 11 are arranged at intervals on 12, upper sealing plate 6 welds with the phase of cylinder 12, and the compensator 7 is set in the upper envelope of cylinder
Between plate and lower shrouding, and upper and lower ends are welded with upper sealing plate 6 and the lower phase of shrouding 11 respectively, and lower shrouding 11 can be with respect to cylinder 12
It is up and down, compensator 7, upper sealing plate 6, lower shrouding 11 and cylinder 12 outer wall between form cavity, be filled with the cavity
Cold and heat insulation material 8.Before compensator 7 is welded, compensator 7 can be pre-stretched.
It can directly weld, can also be set between cylinder 12 and outer container 10 corresponding between compensator 7 and outer container 10
Outer container retainer 9.The structure of the outer container retainer 9 is similar to inner pressurd vessel retainer 14, it include the 3rd Circular Plate 91,
4th Circular Plate 93 and the cylinder section 92 being arranged between the 3rd Circular Plate 91 and the 4th Circular Plate 93.Wherein the 3rd Circular Plate
91 and the 4th Circular Plate 93 be respectively welded at the top cover and top cover reinforcement of outer container 10.The position of lower shrouding 11 is less than the 4th circle
The position of ring flat-plate 93, the outer wall of such compensator can mutually weld with two Circular Plates of the outer container retainer 9.Pass through setting
Compensator 7, storage tank cold events stress can be eliminated, add the security of structure.By setting outer container retainer 9 and compensation
Device 7 is connected, and improves bonding strength, adds bulk strength and stability.
The manhole structure of the utility model embodiment, during routine use, cylinder 12 and the insulation of manhole cover 3
Layer 2 is coated, and will not be conducted heat, can be ensured evaporation rate index of the storage tank in normal operation, will not frostbite on tank body top
The staff of the contact cylinder 12 in portion.When being overhauled to storage tank, manhole cover 3 is opened, personnel can be entered by cylinder 12
Enter to the inside of inner pressurd vessel 13.The maintenance of storage tank can opening is avoided to destroy storage tank cold insulation system and restore the problem of construction,
The cost of overhaul is reduced, economic benefit is huge, and design is simple, easy for construction.
From Fig. 2 to Fig. 4, the invention also discloses a kind of low temperature atmospheric tank, and it is used to preserve liquid oxygen, liquid
The various cryogenic liquids such as argon, liquid nitrogen or low temperature LNG, the low temperature atmospheric tank include inner pressurd vessel 14 and outer container 9, in addition to
Above-mentioned manhole structure.
Specifically represent and describe above illustrative embodiments of the present utility model.It should be understood that this practicality is new
Type is not limited to disclosed embodiment, on the contrary, the utility model is intended to cover the spirit and model included in appended claims
Various modifications and equivalent arrangements in enclosing.
Claims (10)
1. a kind of manhole structure, for low temperature atmospheric tank, the low temperature atmospheric tank includes inner pressurd vessel and outer container, it is special
Sign is that the manhole structure includes：
Cylinder, penetrated located at the top of low temperature atmospheric tank, and by the outside of the outer container to the inner pressurd vessel downwards
Portion, the bottom of the cylinder is fixedly connected with inner pressurd vessel, and compensator is connected between cylinder and outer container；
Manhole cover, removably it is sealedly attached to the upper end port of the cylinder；
Heat-insulation layer, the exposed surface of the manhole cover and cylinder is coated on to manhole cover and cylinder insulation.
2. manhole structure according to claim 1, it is characterised in that inner pressurd vessel is provided between the cylinder and inner pressurd vessel and is protected
Frame is held, the inner pressurd vessel retainer includes the first Circular Plate, the second Circular Plate and is welded on the first Circular Plate and the second annulus
Cylinder section between plate, first Circular Plate and the second Circular Plate are respectively welded in the outer surface of the inner pressurd vessel and Nei Biao
Face, the outer wall of the cylinder mutually weld with the first Circular Plate and the second Circular Plate；
Outer container retainer is provided between the cylinder and outer container, the outer container retainer includes the 3rd Circular Plate, the 4th
Circular Plate and the cylinder section being welded between the 3rd Circular Plate and the 4th Circular Plate, the 3rd Circular Plate and the 4th Circular Plate
It is respectively welded and the outer surface of the outer container and inner surface, the outer surface of the cylinder is provided with upper sealing plate and lower shrouding, institute
State upper sealing plate mutually to weld with the cylinder, the compensator is sheathed between the upper sealing plate of the cylinder and lower shrouding, and is compensated
The upper and lower ends of device are mutually welded with upper sealing plate and lower shrouding respectively, the lower shrouding can relatively described cylinder it is up and down, institute
The outer wall and the outer container retainer for stating compensator mutually weld.
3. manhole structure according to claim 1, it is characterised in that be filled between the outer wall of the compensator and cylinder
Cold and heat insulation material.
4. manhole structure according to claim 2, it is characterised in that the position of the lower shrouding is less than the 4th annulus
Plate.
5. manhole structure according to claim 1 or 2, it is characterised in that the top of the cylinder is provided with manhole flange, institute
State manhole cover and be fixedly connected on the manhole flange, and gasket seal is provided between manhole cover and manhole flange.
6. manhole structure according to claim 2, it is characterised in that the compensator is the ripple being sheathed on the cylinder
Line pipe.
7. manhole structure according to claim 6, it is characterised in that be pre-stretched before the compensator welding.
8. manhole structure according to claim 1, it is characterised in that the cylinder is vertically arranged at the low-temperature atmosphere-pressure storage
The top of tank.
9. manhole structure according to claim 1, it is characterised in that the axis of the cylinder and the inner pressurd vessel and outer appearance
The axis of device overlaps.
10. a kind of low temperature atmospheric tank, including inner pressurd vessel and outer container, it is characterised in that also include such as claim 1 to 9
In any described manhole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720874136.4U CN207065070U (en) | 2017-07-18 | 2017-07-18 | Low temperature atmospheric tank and its manhole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720874136.4U CN207065070U (en) | 2017-07-18 | 2017-07-18 | Low temperature atmospheric tank and its manhole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207065070U true CN207065070U (en) | 2018-03-02 |
Family
ID=61510950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720874136.4U Active CN207065070U (en) | 2017-07-18 | 2017-07-18 | Low temperature atmospheric tank and its manhole structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207065070U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194832A (en) * | 2018-03-14 | 2018-06-22 | 新兴能源装备股份有限公司 | A kind of manhole structure with vacuum interlayer |
| CN109268674A (en) * | 2017-07-18 | 2019-01-25 | 张家港中集圣达因低温装备有限公司 | Low temperature atmospheric tank and its manhole structure |
-
2017
- 2017-07-18 CN CN201720874136.4U patent/CN207065070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268674A (en) * | 2017-07-18 | 2019-01-25 | 张家港中集圣达因低温装备有限公司 | Low temperature atmospheric tank and its manhole structure |
| CN108194832A (en) * | 2018-03-14 | 2018-06-22 | 新兴能源装备股份有限公司 | A kind of manhole structure with vacuum interlayer |
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