CN106286018B - Gas engine bilayer fuel gas pipeline structure and manufacturing method - Google Patents
Gas engine bilayer fuel gas pipeline structure and manufacturing method Download PDFInfo
- Publication number
- CN106286018B CN106286018B CN201610898379.1A CN201610898379A CN106286018B CN 106286018 B CN106286018 B CN 106286018B CN 201610898379 A CN201610898379 A CN 201610898379A CN 106286018 B CN106286018 B CN 106286018B
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- China
- Prior art keywords
- flange
- internal layer
- inner tube
- layer pipe
- outer tube
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
Gas engine bilayer fuel gas pipeline structure of the invention, the flange of depressed area and internal layer pipe flange withholds cooperation on the inside of lap joint flange, the length of internal layer pipe flange is that the short neck of b is connect with inner tube butt welding, it is corresponded on internal layer pipe flange on the outside of inner tube and folds place on the inside of outer tube and venthole is set, outer tube is divided into two sections, centre is equipped with the gap that length is a, and a > b, and overlap joint pipe is connected two sections of outer tube by welding in gap location.When the manufacturing, by outer tube to one end backup, the butt welding of internal layer pipe flange short neck and inner tube is carried out in opposite end；Reverse operation carries out the butt welding of internal layer pipe flange short neck and inner tube in the other end；And weld seam nondestructive inspection is carried out with the same manner.After flaw detection is qualified, overlap joint pipe is welded in the gap location of two sections of outer tubes.It can guarantee the inner tube welding position complete penetraction and fusion in welding of delivery of fuel gas；It moves axially outer tube with can be convenient, welding and nondestructive inspection is carried out to inner tube welding position.
Description
Technical field
The present invention relates to a kind of gas engine bilayer fuel gas pipeline structure and manufacturing methods, belong to engine manufacturing technology
Field.
Background technique
The combustion gas that gas engine uses, once revealing, aggregation reaches certain concentration in the environment, meets open fire
Or high temperature, explosion or fire easily occurs, causes damages to surrounding devices, personnel and environment.For the combustion gas of gas engine
Risk of leakage minimizes, and the prior art uses such a solution of the double-deck fuel gas pipeline.Such as application No. is
201410112756.5 Chinese patent application just disclose a kind of double-deck fuel gas transmission system of multiple spot air inlet dual fuel engine
System.But the double-deck fuel gas pipeline structure of the prior art, at connecting flange position its inner tube can only using interior grafting weldering without
It is butt welding, it cannot be guaranteed that welding position complete penetraction and fusion in welding, and can not detects a flaw to the welding quality of inner tube, it cannot 100%
Guarantee the welding quality of inner tube；In addition face-flange connection sealing effect is undesirable, is also easy to happen leakage, therefore existing skill
The double-deck fuel gas pipeline structure of art still has quite high security risk.
Summary of the invention
The object of the invention is to overcome the deficiency of the above-mentioned prior art, a kind of gas engine bilayer fuel gas pipeline is provided
Structure and manufacturing method.
The object of the present invention is achieved like this: a kind of gas engine bilayer fuel gas pipeline structure, by outer tube, internal layer
Pipe and end connecting flange are constituted, it is characterised in that end connecting flange is made of lap joint flange and internal layer pipe flange, loop method
Blue flange radial outside is equipped with the bolt hole for connection, and inside depressed area and the flange of internal layer pipe flange withhold cooperation, interior
The short neck that the length of layer pipe flange is b is connect with inner tube butt welding, is corresponded on the outside of inner tube and in outer tube on internal layer pipe flange
Side folds place and venthole is arranged, and outer tube is divided into two sections, and centre is equipped with the gap that length is a, and a > b, overlaps pipe in gap
Place is connected two sections of outer tube by welding, and the external seal face protrusion lap joint flange end face of internal layer pipe flange is c
Height.
In order to which the purpose of the present invention is better achieved, the external seal face of the internal layer pipe flange protrudes lap joint flange end
Face is the height of c.
A kind of manufacturing method of above-mentioned gas engine bilayer fuel gas pipeline structure, it is characterised in that take the following steps:
A. by two sections of outer tube insertion overlap joint pipes；
B. inner tube is inserted into outer tube；
C. the flange of lap joint flange flange inner depressed area and internal layer pipe flange is withheld into cooperation；
D. by outer tube to one end backup, the butt welding of internal layer pipe flange short neck and inner tube is carried out in opposite end；Negative side
To operation, the butt welding of internal layer pipe flange short neck and inner tube is carried out in the other end；
E. by outer tube to one end backup, the lossless spy of weld seam of internal layer pipe flange short neck and inner tube is carried out in opposite end
Wound；Reverse operation carries out the weld seam nondestructive inspection of internal layer pipe flange short neck and inner tube in the other end；
F. after flaw detection is qualified, two sections of outer tubes is close to both ends insertion lap joint flange respectively, overlap joint pipe is welded in two sections
The gap location of outer tube.
Technical solution of the present invention, inner tube use butt welding with the short neck of internal layer pipe flange, it is ensured that welding position is complete
Through welding；Since the gap a between two sections of outer tubes is greater than the short neck length degree b of internal layer pipe flange, axial movement outer tube can be convenient,
Welding and nondestructive inspection are carried out to welding position；External connection uses lap joint flange, eliminates error when external connection.
Detailed description of the invention
Fig. 1 is the gas engine bilayer fuel gas pipeline structural schematic diagram of the embodiment of the present invention.
In the figure, it is marked as 1- lap joint flange, 2- internal layer pipe flange, 3- venthole, 4- bolt hole, the short neck of 5- internal layer flange,
6- inner tube, 7- outer tube, 8- overlap joint pipe, 9- fuel gas transmission layer, 10- unsaturated zone, the external sealing surface of 11- internal layer flange, 12- pairs
Welding position is set.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to attached drawing, the gas engine bilayer fuel gas pipeline structure of the present embodiment is connected by outer tube, inner tube and end
Acting flange is constituted.End connecting flange is made of lap joint flange 1 and internal layer pipe flange 2, and 1 flange radial outside of lap joint flange is equipped with
For the bolt hole 4 of connection, the flange of inside depressed area and internal layer pipe flange withholds cooperation, and the length of internal layer pipe flange 2 is b
Short neck 5 connect with 6 butt welding of inner tube, corresponded on internal layer pipe flange 2 and fold place on the inside of the outside of inner tube 6 and outer tube 7 and set
Venthole 3 is set, it is two sections that outer tube 7, which is divided to, and centre is equipped with the gap that length is a, and a > b, overlaps pipe 8 in gap location and passes through weldering
It connects and connects two sections of outer tube 7, the external seal face 11 of internal layer pipe flange 2 protrudes the height that 1 end face of lap joint flange is c
Degree.
When manufacturing, successively by two sections of insertion overlap joint pipes 8 of outer tube 7, inner tube 6 is inserted in outer tube 7, then will live
The flange of set 1 flange inner depressed area of flange and internal layer pipe flange 2 withholds cooperation.Then by outer tube 7 to one end backup,
Opposite end carries out the butt welding of internal layer pipe flange short neck 5 and inner tube 6；Then reverse operation carries out inner tube in the other end
The butt welding of flange short neck 5 and inner tube 6.After completing above-mentioned butt welding, by outer tube to one end backup, in opposite end progress
The weld seam nondestructive inspection of layer pipe flange short neck and inner tube；Reverse operation, the other end carry out the short neck of internal layer pipe flange with it is interior
The weld seam nondestructive inspection of layer pipe.After flaw detection is qualified, two sections of outer tubes are close to both ends insertion lap joint flange respectively, by overlap joint pipe weldering
It is connected to the gap location of two sections of outer tubes.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (2)
1. a kind of manufacturing method of gas engine bilayer fuel gas pipeline structure, it is characterised in that:
Pipeline structure is made of outer tube, inner tube and end connecting flange, and end connecting flange is by lap joint flange and inner tube
Flange is constituted, and lap joint flange flange radial outside is equipped with the bolt hole for connection, inside depressed area and internal layer pipe flange
Flange withholds cooperation, and the short neck that the length of internal layer pipe flange is b is connect with inner tube butt welding, corresponds to inner tube on internal layer pipe flange
Place being folded on the inside of outside and outer tube, venthole being set, outer tube is divided into two sections, and centre is equipped with the gap that length is a, and a >
B, overlap joint pipe are connected two sections of outer tube by welding in gap location；
Take following manufacturing step:
A. by two sections of outer tube insertion overlap joint pipes；
B. inner tube is inserted into outer tube；
C. the flange of lap joint flange flange inner depressed area and internal layer pipe flange is withheld into cooperation；
D. by outer tube to one end backup, the butt welding of internal layer pipe flange short neck and inner tube is carried out in opposite end；Opposite direction behaviour
Make, carries out the butt welding of internal layer pipe flange short neck and inner tube in the other end；
E. by outer tube to one end backup, the weld seam nondestructive inspection of internal layer pipe flange short neck and inner tube is carried out in opposite end；
Reverse operation carries out the weld seam nondestructive inspection of internal layer pipe flange short neck and inner tube in the other end；
F. after flaw detection is qualified, two sections of outer tubes is close to both ends insertion lap joint flange respectively, overlap joint pipe is welded in two sections of outer layers
The gap location of pipe.
2. the manufacturing method of gas engine bilayer fuel gas pipeline structure according to claim 1, it is characterised in that described
The height that the external seal face protrusion lap joint flange end face of internal layer pipe flange is c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898379.1A CN106286018B (en) | 2016-10-14 | 2016-10-14 | Gas engine bilayer fuel gas pipeline structure and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898379.1A CN106286018B (en) | 2016-10-14 | 2016-10-14 | Gas engine bilayer fuel gas pipeline structure and manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN106286018A CN106286018A (en) | 2017-01-04 |
| CN106286018B true CN106286018B (en) | 2018-12-04 |
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ID=57717381
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610898379.1A Active CN106286018B (en) | 2016-10-14 | 2016-10-14 | Gas engine bilayer fuel gas pipeline structure and manufacturing method |
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| CN (1) | CN106286018B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131079A (en) * | 2017-07-05 | 2017-09-05 | 广西玉柴机器股份有限公司 | A kind of gas engine supply bimetallic tube |
| CN112032432B (en) * | 2020-08-20 | 2022-04-15 | 中船动力研究院有限公司 | Double-layer pipe flange |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201954147U (en) * | 2009-11-26 | 2011-08-31 | 张明亮 | Adjustable butt welding flange |
| CN103939240A (en) * | 2014-03-25 | 2014-07-23 | 南车玉柴四川发动机股份有限公司 | Double-layer fuel gas conveying system of multipoint gas inlet dual-fuel engine |
| CN104024624A (en) * | 2011-11-04 | 2014-09-03 | 卡特彼勒发动机有限及两合公司 | Double-walled fuel supply pipe element |
| CN104024614A (en) * | 2011-11-04 | 2014-09-03 | 卡特彼勒发动机有限及两合公司 | Fuel supply system with leakage detection means |
| CN104024626A (en) * | 2011-11-04 | 2014-09-03 | 卡特彼勒发动机有限及两合公司 | Cylinder head |
| CN104040163A (en) * | 2011-11-04 | 2014-09-10 | 卡特彼勒发动机有限及两合公司 | Fuel inlet valve and cylinder head for housing a fuel inlet valve |
| CN104455835A (en) * | 2014-12-29 | 2015-03-25 | 江苏大津重工有限公司 | Double-pipe pipeline connection flange of hazardous gas delivery system |
| CN104975986A (en) * | 2014-04-04 | 2015-10-14 | 卡特彼勒发动机有限责任两合公司 | Double-walled fuel supply line element and connecting flange for the same |
-
2016
- 2016-10-14 CN CN201610898379.1A patent/CN106286018B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201954147U (en) * | 2009-11-26 | 2011-08-31 | 张明亮 | Adjustable butt welding flange |
| CN104024624A (en) * | 2011-11-04 | 2014-09-03 | 卡特彼勒发动机有限及两合公司 | Double-walled fuel supply pipe element |
| CN104024614A (en) * | 2011-11-04 | 2014-09-03 | 卡特彼勒发动机有限及两合公司 | Fuel supply system with leakage detection means |
| CN104024626A (en) * | 2011-11-04 | 2014-09-03 | 卡特彼勒发动机有限及两合公司 | Cylinder head |
| CN104040163A (en) * | 2011-11-04 | 2014-09-10 | 卡特彼勒发动机有限及两合公司 | Fuel inlet valve and cylinder head for housing a fuel inlet valve |
| CN103939240A (en) * | 2014-03-25 | 2014-07-23 | 南车玉柴四川发动机股份有限公司 | Double-layer fuel gas conveying system of multipoint gas inlet dual-fuel engine |
| CN104975986A (en) * | 2014-04-04 | 2015-10-14 | 卡特彼勒发动机有限责任两合公司 | Double-walled fuel supply line element and connecting flange for the same |
| CN104455835A (en) * | 2014-12-29 | 2015-03-25 | 江苏大津重工有限公司 | Double-pipe pipeline connection flange of hazardous gas delivery system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106286018A (en) | 2017-01-04 |
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Effective date of registration: 20200903 Address after: No.82 Xingfa Road, Lvshun Economic Development Zone, Dalian City, Liaoning Province Co-patentee after: CRRC Dalian Co.,Ltd. Patentee after: Dalian CRRC Diesel Engine Co., Ltd Address before: 116022 Shahekou, Liaoning, China No. 51 The Strip Patentee before: CRRC Dalian Co.,Ltd. |