CN105270780A - Manhole device of low-temperature liquid storing and transporting container - Google Patents
Manhole device of low-temperature liquid storing and transporting container Download PDFInfo
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- CN105270780A CN105270780A CN201510710888.2A CN201510710888A CN105270780A CN 105270780 A CN105270780 A CN 105270780A CN 201510710888 A CN201510710888 A CN 201510710888A CN 105270780 A CN105270780 A CN 105270780A
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- manhole
- flange
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- liquid storage
- cryogenic liquid
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Abstract
The invention relates to a manhole device of a low-temperature liquid storing and transporting container. The manhole device of the low-temperature liquid storing and transporting container comprises a manhole flange, a DN400 sealing head and an expansion joint, wherein the manhole flange is a long-neck butt-welded flange; one end of the manhole flange is welded with an outer layer housing of a low-temperature container; one end of the manhole flange is covered by a manhole cover used for sealing the manhole device; the sealing surface of the manhole flange is sealed by a tenon slot; the DN400 sealing head is welded with an inner layer housing of the low-temperature container, so that the inner layer housing is in a heat insulation sealed environment; the expansion joint is connected between a manhole short segment and a tube section which is connected with the sealing head. Through the manhole device of the low-temperature liquid storing and transporting container, the problem of deformation caused by cold shrinkage of the inner housing of the low-temperature container is solved; and the manhole device is convenient to maintain, obvious in sealing effect and convenient to mount.
Description
Technical field
The present invention relates to a kind of double-layer vacuum insulated cryogen container people aperture apparatus, particularly relate to a kind of cryogenic liquid vessel manhole device for cryogenic liquids such as accumulating liquefied natural gas, belong to cryogenic liquid warehousing and transportation facilities technical field.
Background technology
Double-layer vacuum insulated cryogen container comprises internal layer shell and outer casing, arranges insulating sandwich space between internal layer shell and outer casing, and in order to overhaul conveniently, pressure container all arranges manhole device, but the setting of manhole must ensure the leakproofness of container.Current double-layer vacuum insulated cryogen container generally all only arranges technique manhole, whole seam welding and non-destructive test when facilitating internal layer shell to make, and does not establish and can open manhole.Some originating firms do not arrange manhole on outer casing, because the setting of manhole may cause internal gas to leak, layer vacuum also may be made not ensure, the inconvenience that manhole makes to overhaul very is not set, the cost of overhaul strengthens, and even also can make housing service life reduction.
The present invention is exactly the deficiency that will overcome existing cryogenic liquid storage-transport vessel manhole device, a kind of leakproofness and the adiathermancy that can ensure whole inner casing are provided, make again manhole open convenient, the manhole device that the cost of overhaul reduces, be arranged on position, horizontal cryogenic vessel end socket middle and upper part.
Summary of the invention
The technical problem to be solved in the present invention is: the invention provides a kind of cryogenic liquid storage-transport vessel manhole device, this invention manhole flange adopts long-neck W.N flange, sealing surface adopts tongue and groove, ensure that absolute tightness, inner casing welds with the end socket of DN400, make endogenous pyrogen be in adiabatic space, greatly reduce the cost of overhaul, can not service life of equipment be reduced.
In order to solve the problem, the present invention is achieved through technology:
A kind of cryogenic liquid storage-transport vessel manhole device, comprises nut, stud, manhole flange lid, pad, manhole flange, manhole pipe nipple, expansion joint, shell ring, end socket, end socket handle.Stud, nut are used for being fixedly connected with manhole flange and manhole cover; Manhole flange is the long-neck W.N flange of DN400, and one end is connected with manhole pipe nipple, and one end is coated with the manhole cover for closed manhole device; Pad is SW with outside ring; Manhole pipe nipple welds with the shell of low-temperature (low temperature) vessel, adopts complete penetraction and fusion in welding; Used for expansion joint in connection manhole pipe nipple and shell ring, model is ZXW (B) 400, and length and wave number are determined according to the spacing of inside and outside shell; End socket is the ellipsoidal head of DN400, is welded on inner casing with shell ring; End socket handle is fixedly connected on the ellipsoidal head of DN400.
Manhole flange is coated with the manhole cover for closed manhole device.
Manhole flange is arranged on outer tank body outside, for being fixedly connected with the outer casing of low-temperature (low temperature) vessel.
Expansion joint pattern is the little wave height expansion joint of global formation, and nominal diameter is DN400.
Used for expansion joint in connection manhole pipe nipple and shell ring, be arranged between the internal layer shell of low-temperature (low temperature) vessel and outer casing.
DN400 ellipsoidal head is welded on inner barrel inside, and actv. ensure that the airtight performance of inner casing.
Manhole cover can be installed various adapter and other container attachment, adapter be concentrated and draws, can reduce and leak heat.
Have employed technique scheme, the invention has the beneficial effects as follows:
Inner casing welds the ellipse head of DN400, ensures leakproofness and the adiathermancy of whole inner casing, shell welding long-neck W.N flange, manhole is opened convenient, the cost of overhaul reduces; The setting of expansion joint, actv. solves the problem that cryogenic liquid causes housing shrinkage, can not reduce the life problems of equipment because stress is large; Whole manhole structure is arranged on position, horizontal cryogenic vessel end socket middle and upper part, as shown in Figure 1.
Therefore, the present invention, compared with existing cryogenic liquid storage-transport vessel manhole device, has outstanding advantage and is: (1) arranges manhole device, conveniently enters in low-temperature (low temperature) vessel and checks.(2) manhole device adopts ZXW (B) 400 expansion joint, connects internal layer shell and outer casing respectively, solves low-temperature (low temperature) vessel Material shrinkage problem; (3) adopt the ellipsoidal head of DN400 to be fixedly connected with inner casing, actv. ensure that inner casing is in adiabatic space; (4) manhole device adopts long-neck W.N flange, and sealing surface adopts tongue and groove sealing, and sealing effectiveness is obvious, can not affect the degree of vacuum in the middle of ectonexine housing.(5) manhole cover can be installed various adapter and other container attachment, adapter be concentrated and draws, can reduce and leak heat.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of cryogenic liquid storage-transport vessel manhole device provided by the present invention;
In accompanying drawing: 1, nut; 2, stud; 3, manhole flange lid; 4, pad; 5, manhole flange; 6, manhole pipe nipple; 7, expansion joint; 8, shell ring; 9, DN400 ellipsoidal head; 10, end socket handle.11, shell end socket; 12, inner casing end socket
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.As shown in Figure 1, the invention provides a kind of cryogenic liquid storage-transport vessel manhole device, stud 2, nut 1 are for being fixedly connected with manhole flange 5 and manhole flange lid 3, manhole flange 5 is the long-neck W.N flange of DN400, and one end is fixedly connected with manhole pipe nipple, and one end is coated with the manhole cover 3 for closed manhole device, manhole flange and the middle shimming 4 of manhole flange lid are SW with outside ring, the sealing surface form of manhole flange is tongue and groove sealing, further enhance sealing effectiveness, manhole pipe nipple 6 welds with the shell end socket 11 of low-temperature (low temperature) vessel, adopt complete penetraction and fusion in welding, expansion joint 7 one end is fixedly connected with manhole pipe nipple, one end is fixedly connected with the shell ring 8 of DN400, the model of expansion joint is ZXW (B) 400, length and wave number are determined according to the spacing of inside and outside shell, shell ring 8 stretches in inner casing end socket 12, be fixedly connected with inner casing end socket, one end is fixedly connected with the ellipsoidal head of DN400, end socket handle 10 is fixedly connected on the ellipsoidal head of DN400, when in endogenous pyrogen during holding low-temperature liquid, expansion joint actv. solves the contraction problem of low-temperature (low temperature) vessel material, manhole cover can be installed various adapter and other container attachment, adapter is concentrated and draws, can reduce and leak heat.During maintenance, open manhole cover, the end socket of DN400 is disconnected, with hanging lock tube upper cover handle, end socket being taken out, greatly reducing service expenditure, go back actv. and ensure that inner casing is in adiabatic enclosed environment, this manhole device is arranged on the upper side of horizontal vessel end socket, namely away from the side of bearing, as shown in Figure 1, the stress of DN400 ellipsoidal head is effectively reduced.
It is last it is noted that above embodiment is only in order to illustrate this explanation and unrestricted technical scheme described in the invention; Therefore, although this specification sheets reference the above embodiments are to present invention has been detailed description, those of ordinary skill in the art should be appreciated that and still can modify to the present invention or equivalent replacement; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. a cryogenic liquid storage-transport vessel manhole device, comprises nut, stud, manhole flange lid, pad, manhole flange, manhole pipe nipple, expansion joint, shell ring, end socket, end socket handle.Described bolt is for connecting manhole flange; Described manhole flange is the long-neck W.N flange of DN400; Described pad is SW with outside ring; Described manhole pipe nipple is connected with the shell of low-temperature (low temperature) vessel; Described is used for expansion joint in connection manhole pipe nipple and shell ring; Described end socket is the ellipsoidal head of DN400; Described end socket handle is fixedly connected on the ellipsoidal head of DN400.
2. cryogenic liquid storage-transport vessel manhole device as claimed in claim 1, is characterized in that: described manhole flange is coated with the manhole cover for closed manhole device.
3. cryogenic liquid storage-transport vessel manhole device as claimed in claim 1, is characterized in that: described manhole flange is arranged on outer tank body outside, for being fixedly connected with the outer casing of low-temperature (low temperature) vessel.
4. cryogenic liquid storage-transport vessel manhole device as claimed in claim 1, is characterized in that: described manhole flange adopts the long-neck W.N flange of DN400, sealing surface adopts tongue and groove sealing, and sealing property is high.
5. cryogenic liquid storage-transport vessel manhole device as claimed in claim 1, is characterized in that: described expansion joint pattern is the little wave height expansion joint of global formation, and nominal diameter is DN400.
6. cryogenic liquid storage-transport vessel manhole device as claimed in claim 1, is characterized in that: described is used for expansion joint in connection manhole pipe nipple and shell ring, is arranged between the internal layer shell of low-temperature (low temperature) vessel and outer casing.
7. cryogenic liquid storage-transport vessel manhole device as claimed in claim 1, is characterized in that: described DN400 ellipsoidal head is welded on inner barrel inside, and actv. ensure that the airtight performance of inner casing.
8. cryogenic liquid storage-transport vessel manhole device as claimed in claim 1, is characterized in that: manhole cover can be installed various adapter and other container attachment, adapter is concentrated and draws, can reduce and leak heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510710888.2A CN105270780A (en) | 2015-10-27 | 2015-10-27 | Manhole device of low-temperature liquid storing and transporting container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510710888.2A CN105270780A (en) | 2015-10-27 | 2015-10-27 | Manhole device of low-temperature liquid storing and transporting container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105270780A true CN105270780A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510710888.2A Pending CN105270780A (en) | 2015-10-27 | 2015-10-27 | Manhole device of low-temperature liquid storing and transporting container |
Country Status (1)
| Country | Link |
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| CN (1) | CN105270780A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106586315A (en) * | 2017-02-07 | 2017-04-26 | 兴化市苏星金属制品有限公司 | Welding neck flange handhole |
-
2015
- 2015-10-27 CN CN201510710888.2A patent/CN105270780A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106586315A (en) * | 2017-02-07 | 2017-04-26 | 兴化市苏星金属制品有限公司 | Welding neck flange handhole |
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| C06 | Publication | ||
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Application publication date: 20160127 |