CN207514460U - A kind of generator bilayer for LNG surface units supplies tube-connecting part - Google Patents
A kind of generator bilayer for LNG surface units supplies tube-connecting part Download PDFInfo
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- CN207514460U CN207514460U CN201721462695.0U CN201721462695U CN207514460U CN 207514460 U CN207514460 U CN 207514460U CN 201721462695 U CN201721462695 U CN 201721462695U CN 207514460 U CN207514460 U CN 207514460U
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- tube
- bilayer
- arc gusset
- connecting part
- generator
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- 238000003466 welding Methods 0.000 claims abstract description 17
- 230000002146 bilateral effect Effects 0.000 claims abstract description 8
- 238000004513 sizing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 14
- 239000007789 gas Substances 0.000 description 16
- 238000010276 construction Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model is that a kind of generator bilayer for LNG surface units supplies tube-connecting part, and to have the sizing elbow of angle of turn identical with interior pipe bend, tube wall splits the HALF elbows for two valves along longitudinal direction；Arc gusset is each provided in two valve HALF elbows junctions, fixation is connect using bilateral foot welding manner with every valve HALF elbows, is fixed with the clamping part clamps flexibly dismantled.Such method sets a kind of component that can be easy to disassemble in inner tube commissure, simple and effective, manufactures cost economy, and the later stage checks that inner tube weld seam is convenient.
Description
Technical field
The utility model belongs to ship and marine engineering equipment manufacturing field, is related to dual fuel engine power plant pipeline
Pipe fittings design, especially belong to a kind of generator bilayer gas supply tube-connecting part for LNG surface units.
Background technology
Important system of the LNG air supply systems as LNG fuels and energy ships is that the room temperature for generating LNG gasifiers is natural
The pipe-line system that gas supply host uses.Since natural gas has inflammable and explosive characteristic, if leakage pair occurs for supply air line
In entire LNG fuels and energies ship, on the bank, Offshore Units and personnel safety portion be likely to result in great loss.So it is
Ensure air supply system safety, foundation《IGC CODE International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk -2005》In
To having using double-wall pipe and the requirement for keeping keeping positive pressure or negative pressure among outer tube and inner tube, air supply system for dual fuel engine
Outer layer can only be taken as air hose, internal layer is higher than internal supply air line pressure for the bimetallic tube design or outer tube charge pressure of air supply pipe
The mode of the bimetallic tube design of the inert gas of power, ensures the safety of air supply system with this.
Prior art discloses a kind of dual-layer pipe wall composite-type gas pipeline and the leakage monitoring methods for the pipeline
(201210246597.9), it mainly solves high risk zone gas pipeline safety in operation deficiency and leakage point is difficult to determining ask
Topic.It is characterized in that：Spatia between inner tube and outer tube is set, nitrogen displacement, the top of outer tube outer wall are carried out in spatia
Several vertical branch pipes connected with spatia are set, and the top setting concrete slab of vertical branch pipe is sealed, side wall connection one
A reclinate branch pipe, branch pipe end are equipped with pressure rupture disk, and installation combustible gas probe in concrete slab bottom surface stretches into perpendicular
Inside allotment pipe, the fuel gas that is connected respectively to by analog signal line and RS485 data bus cables in remote monitoring room
Alarm and industrial control computer, industrial control computer calculate the position that pipeline leaks.In the utility model is disclosed and is prepared
The method of pipe bend, it is specific as follows：It is curved to prepare an outer tube with angle of turn identical with interior pipe bend and suitable length
Head, tube wall are splitted along longitudinal direction as two valves, and internal diameter is equal to outer pipe outside diameter, is fastened on the corresponding outer tube in interior pipe bend both ends
On, and welded seal will be carried out between its two valve and with outer tube lap-joint, finally in the periphery of outer tube, spraying 3PE is compound
Corrosion-inhibiting coating so far completes the connection of channel bend；The method for preparing interior pipe bend is welding manner, and complex process is live
Site operation is required to, difficulty of construction is big, and inner tube Welding Testing must be completed before outer pipe construction, complex procedures, the duration
It is long.
Prior art discloses a kind of construction technologies of LNG powered ships air supply system bimetallic tube
(201410336396.7), including two parts of internal field construction technology and outfield construction technology, by the portion of air supply system bimetallic tube
Working procedure is divided to be advanced to internal field progress, reduces the working procedure under the severe environmental conditions of ship scene, is LNG fuels and energy ships
The construction of oceangoing ship air supply system Double layer pipeline provides a kind of arrangement and method for construction in detail, clear, clear and definite, safe, which makes
The connection mode all welded with inner and outer tubes particularly takes pipe bent position outer tube first is cut into two valve pipes pacify
Dress, then to the mode that junction is welded, conventional weld detection is carried out after the completion of welding, although can make the outer tube of double-wall pipe with
Positive pressure or negative pressure are kept among inner tube, but outer tube leakage should unload immediately as found, inspection, but repair welding time are re-started after repair welding
Number must not exceed twice, and repair welding must scrap pipe or elbow more than twice, and waste of materials and working hour are relatively more, production cycle ratio
It is longer, and site operation and inspection difficulty are big.
Invention content
The utility model is to provide a kind of generator bilayer for LNG surface units and supplies tube-connecting part, to have
The sizing elbow of angle of turn identical with interior pipe bend, tube wall split the HALF elbows for two valves along longitudinal direction；In two valve HALF
Elbow junction is each provided with arc gusset, and fixation is connect using bilateral foot welding manner with every valve HALF elbows, with flexibly tearing open
The clamping part clamps unloaded are fixed.Such method sets a kind of component that can be easy to disassemble in inner tube commissure, simple and effective, system
This economy is caused, the later stage checks that inner tube weld seam is convenient.
In order to achieve the above object, the utility model proposes a kind of generator bilayer air supply pipes for LNG surface units
Connecting component, including inner tube 1, outer tube 2, said inner tube 1 is arranged on inside the outer tube 2, is set between said inner tube 1 and outer tube 2
Interstitial cavities 3 are equipped with, and have stent support；Characterized by further comprising the flanges 4 being welded on outer tube 2, are connect with flange 4
HALF elbows 5, the HALF elbows 5 are the sizing elbow with angle of turn identical with interior pipe bend, and tube wall is along vertical
To the part splitted as two valves；Arc gusset 6, arc gusset 6 and every valve are each provided in two valve HALF elbows, 5 junction
HALF elbows 5 are fixed using the connection of bilateral foot welding manner, and the identical gasket of shape is provided between arc gusset 6；Also wrap
The clamping component 7 that can flexibly dismantle is included, corresponding arc gusset 6 is fixedly clamped by the clamping component 7.
Further, on the arc gusset 6 with bore connection bolt hole, clamping component 7 be fastening bolt, spiral shell
Bolt spacing is evenly arranged,
Further, the bolt pore size distribution angle with brill connection on the arc gusset 6 is 10 ° -12 °.
A kind of fabrication and installation method of generator bilayer gas supply tube-connecting part for LNG surface units, feature exist
In：Include the following steps：
A. supply air line is made according to design drawing, including inner and outer tubes；
B. 100% ray detection is carried out to the per pass weld seam of inner tube, conventional detection is carried out to outer tube；
C. the hydrostatic test of 1.5 times of design pressures is carried out to the supply air line after detection qualification；
D. it after pressure testing, is dried up using dry compressed air water stain in supply air line；
E. by part outer tube sleeve dress on inner pipe, several supports for being used to prevent inner and outer pipes bias are set between inner and outer pipes
Device；
F. with normal bend, on elbow axis, one section of size scribing line is deviated toward both sides, is reserved gusset and the ruler of gasket
It is very little to slice off；
G. it is positioned on sawing machine, cuts open and be split into two halves from the twice ground bit lines of elbow, each half is welded with arc gusset
On elbow, the welding position of gusset and half elbow uses bilateral falsework slippage；
H. the bolt hole with brill connection on gusset,
I. by inner tube close up weld seam carry out welding close up, and to weld seam carry out 100% ray detection；
J. the gas pressure test of 1.5 times of design pressures is carried out to the inner tube after detection lattice；
K. two panels HALF elbows (5) close up and in centre by the use of gasket as gasket, are fastened later with bolt；
L. outer tube elbow and outer tube straight tube are fixed by flanged joint, and outer tube closes up completion；
M. the gas pressure test of 1.5 times of design pressures is carried out to the outer tube after detection lattice.
The utility model provides a kind of generator bilayer gas supply tube-connecting part for LNG surface units, for have with
The sizing elbow of the identical angle of turn of interior pipe bend, tube wall split the HALF elbows for two valves along longitudinal direction；It is curved in two valve HALF
Head junction is each provided with arc gusset, and fixation is connect using bilateral foot welding manner with every valve HALF elbows, with flexible dismounting
Clamping part clamps fix.Such method sets a kind of component that can be easy to disassemble in inner tube commissure, simple and effective, manufacture
Cost economy meets the requirement that combustion gas inner tube facilitates the welding inspection in later stage.
Description of the drawings
Fig. 1 show the utility model bilayer gas supply tube-connecting part structure diagram.
Fig. 2 show the more double-deck gas supply tube-connecting part structure A-A sectional views of the utility model.
Fig. 3 show the more double-deck gas supply tube-connecting part structure B-B sectional views of the utility model.
Fig. 4 show the utility model preferred embodiment bilayer gas supply tube-connecting part structure diagram.
Fig. 5 show the utility model preferred embodiment bilayer gas supply tube-connecting part structure A-A views.
Specific embodiment
Specific embodiment of the present utility model is provided, but the utility model is not limited to following implementation below in conjunction with attached drawing
Mode.According to following explanation and claims, will be become apparent from feature the advantages of the utility model.It should be noted that attached drawing
Using very simplified form and using non-accurate ratio, it is only used for convenience, lucidly aids in illustrating the utility model
The purpose of embodiment.
Attached drawing 1,2,3 show a kind of generator bilayer air supply pipe for LNG surface units of utility model embodiment and connects
Relay part, including inner tube 1, outer tube 2, said inner tube 1 is arranged on inside the outer tube 2, is set between said inner tube 1 and outer tube 2
There are interstitial cavities 3, and have stent support；Characterized by further comprising the flanges 4 being welded on outer tube 2, are connect with flange 4
HALF elbows 5, the HALF elbows 5 are the sizing elbow with angle of turn identical with interior pipe bend, and tube wall is along longitudinal direction
Split the part for two valves；Arc gusset 6, arc gusset 6 and every valve HALF are each provided in two valve HALF elbows, 5 junction
Elbow 5 is fixed using the connection of bilateral foot welding manner, and the identical gasket of shape is provided between arc gusset 6；It has further included
Corresponding arc gusset 6 is fixedly clamped by the clamping component 7 that can flexibly dismantle, the clamping component 7.
A kind of component that can be easy to disassemble in inner tube commissure in above-described embodiment is set, cost economy is manufactured, meets
Combustion gas inner tube facilitates the requirement of the welding inspection in later stage, and there is the easy to manufacture and install, later stage to check the convenient effect of inner tube weld seam.
It has been found that also exist during above-described embodiment work certain the defects of, in HALF types elbow before
On, arc gusset is directly welded at the outer surface of half elbow, and corresponding arc gusset 6 is fixedly clamped by clamping component, in this way
Cause design pressure that code requirement is not achieved, the water pressure test of pipeline workshop, leakage is seriously；And in making, difficulty is big, technique
It is complicated.
In view of the above-mentioned problems, clamping component is further proposed by the way of fastening bolt, on the arc gusset 6
With the bolt hole for boring connection, clamping component 7 is fastening bolt, and pitch of bolts is evenly arranged,
Further, the bolt pore size distribution angle with brill connection on the arc gusset 6 is 10 ° -12 °.
Further, it is lengthened on the width dimensions of arc gusset, size extends to the notch both sides of half elbow, thick
Increasing to equal flange thickness on degree, welding procedure uses bilateral full weld,
In above-described embodiment HALF types are completely solved for the generator bilayer of LNG surface units gas supply tube-connecting part
Elbow cannot bear the technical issues of 0.7MPa, have preferable sealing and measuring body effect, the inspection of inner tube weld seam is taken
Remove the mode of HALF type elbows, solve the problems, such as to check that weld seam needs to remove whole outer tube, have it is convenient, save
Artificial effect.
Although the utility model has been disclosed with preferred embodiment as above, so it is not limited to the utility model.This reality
It is without departing from the spirit and scope of the utility model, each when that can make with novel those of ordinary skill in the art
Kind changes and retouches.Therefore, the scope of protection of the utility model is when subject to those as defined in claim.
Claims (3)
1. a kind of generator bilayer for LNG surface units supplies tube-connecting part, described including inner tube (1), outer tube (2)
Inner tube (1) is arranged on the outer tube (2) inside, interstitial cavities (3) is provided between said inner tube (1) and outer tube (2), and have branch
Frame supports；Characterized by further comprising the flange (4) being welded on outer tube (2), the HALF elbows (5) being connect with flange (4), institute
The HALF elbows (5) stated are the sizing elbow with angle of turn identical with interior pipe bend, and tube wall is splitted along longitudinal direction as two valves
Part；Arc gusset (6), arc gusset (6) and every valve HALF elbows are each provided in two valve HALF elbows (5) junctions
(5) it is fixed using the connection of bilateral foot welding manner, the identical gasket of shape is provided between arc gusset (6)；It has further included
Corresponding arc gusset (6) is fixedly clamped by the clamping component (7) that can flexibly dismantle, the clamping component (7).
2. a kind of generator bilayer for LNG surface units according to claim 1 supplies tube-connecting part, feature
It is：On the arc gusset (6) with bore connection bolt hole (71), clamping component (7) be fastening bolt (72), bolt
(72) spacing is evenly arranged.
3. a kind of generator bilayer for LNG surface units according to claim 2 supplies tube-connecting part, feature
It is：It is 10 ° -12 ° to be distributed angle with the bolt hole (71) for boring connection on the arc gusset (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721462695.0U CN207514460U (en) | 2017-11-06 | 2017-11-06 | A kind of generator bilayer for LNG surface units supplies tube-connecting part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721462695.0U CN207514460U (en) | 2017-11-06 | 2017-11-06 | A kind of generator bilayer for LNG surface units supplies tube-connecting part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514460U true CN207514460U (en) | 2018-06-19 |
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ID=62537152
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721462695.0U Active CN207514460U (en) | 2017-11-06 | 2017-11-06 | A kind of generator bilayer for LNG surface units supplies tube-connecting part |
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| Country | Link |
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| CN (1) | CN207514460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747655A (en) * | 2017-11-06 | 2018-03-02 | 惠生（南通）重工有限公司 | A kind of double-deck supply tube-connecting part of generator for LNG surface units |
| CN108581264A (en) * | 2018-07-24 | 2018-09-28 | 张月文 | A kind of double-layer bend processing method |
-
2017
- 2017-11-06 CN CN201721462695.0U patent/CN207514460U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747655A (en) * | 2017-11-06 | 2018-03-02 | 惠生（南通）重工有限公司 | A kind of double-deck supply tube-connecting part of generator for LNG surface units |
| CN108581264A (en) * | 2018-07-24 | 2018-09-28 | 张月文 | A kind of double-layer bend processing method |
| CN108581264B (en) * | 2018-07-24 | 2020-11-03 | 张月文 | Double-layer elbow machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 226000 port industrial zone 3, Nantong Economic and Technological Development Zone, Jiangsu Province Patentee after: Wison Clean Energy Technology Group Co.,Ltd. Country or region after: China Address before: 226009 Jianghai Road 189, Nantong Economic and Technological Development Zone, Nantong City, Jiangsu Province Patentee before: WISON(NANTONG) HEAVY INDUSTRY Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |