CN104801621B - A kind of expanding equipment of liquid nitrogen pipes - Google Patents
A kind of expanding equipment of liquid nitrogen pipes Download PDFInfo
- Publication number
- CN104801621B CN104801621B CN201510216165.7A CN201510216165A CN104801621B CN 104801621 B CN104801621 B CN 104801621B CN 201510216165 A CN201510216165 A CN 201510216165A CN 104801621 B CN104801621 B CN 104801621B
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- China
- Prior art keywords
- feeding pipe
- nitrogen feeding
- pipe
- nitrogen
- liquid nitrogen
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
- B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of expanding equipment of liquid nitrogen pipes, including nitrogen feeding pipe, fin, aeration ring, tracheae, integrated pipe, liquid nitrogen feeding mechanism, liquid nitrogen collection device, nitrogen feeding pipe open at one end other end closure, nitrogen feeding pipe bosom are provided with baffle, and baffle will be divided into two parts inside nitrogen feeding pipe；2 fins are set on nitrogen feeding pipe, and fin is internally provided with baffle, and fin section is rounded；Liquid nitrogen feeding mechanism is connect with the first part inside nitrogen feeding pipe by the first connecting tube, liquid nitrogen collection device is connect with the second part inside nitrogen feeding pipe by the second connecting tube, 2 aeration rings are provided on nitrogen feeding pipe, it is tightly connected outside aeration ring and nitrogen feeding pipe, tracheae is mounted on inside the first part of nitrogen feeding pipe, 2 gas nozzles are set on tracheae, and gas nozzle passes through its gas outlet of nitrogen feeding pipe tube wall and is arranged inside aeration ring；Integrated pipe includes water-supply-pipe and exhaust pipe, and exhaust pipe is arranged above water-supply-pipe.
Description
Technical field
The present invention relates to pipeline welding fields, are to be related to a kind of expanding equipment of liquid nitrogen pipes more specifically.
Background technique
Longitudinal submerged arc welded pipe requires to eliminate the moulding stress and welding stress of steel pipe in process, at present in engineering
Generally use mechanical means and carry out expanding elimination stress, but mechanical means operating difficulties at high cost, the present invention using liquid processes into
Row is expanding, and this method is easy to operate low in cost.
The present invention uses liquid diameter enlarging method, and expander is put into pipeline, so that weld seam is between two fins,
It is first mainly filled with a certain amount of water into pipeline, after water is sealed, then is passed through liquid nitrogen into nitrogen feeding pipe, liquid nitrogen is in nitrogen feeding pipe
Pass through fin when flowing, fin is made of metal material, and fin temperature reduces the coolant-temperature gage that will lead to around fin and drops therewith
Low and water can gradually freeze, after water freezing volume increase, closed space inner volume increase can by pipeline-weld position into
Row is expanding, to eliminate stress.
Summary of the invention
It is insufficient in the prior art it is an object of the invention to overcome, a kind of expanding equipment of liquid nitrogen pipes is provided, the present invention
The letter of major advantage structure, and low manufacture cost.In order to achieve the above objectives, present invention employs following technical solutions:
A kind of expanding equipment of liquid nitrogen pipes, the expanding equipment of a kind of liquid nitrogen pipes includes nitrogen feeding pipe, fin, inflation
Circle, tracheae, integrated pipe, liquid nitrogen feeding mechanism, liquid nitrogen collection device, the nitrogen feeding pipe open at one end other end closure, defeated nitrogen
Pipe bosom is provided with baffle, and the baffle will be divided into two parts, i.e. first part and second part, institute inside nitrogen feeding pipe
Baffle one end and nitrogen feeding pipe open end are stated on same section, baffle extends along nitrogen feeding pipe toward closed end, and baffle and closure
There are a distances between end；2 fins are set on the nitrogen feeding pipe, are tightly connected outside the fin and nitrogen feeding pipe, it is described
Fin section is rounded；The fin is made of metal material, and the nitrogen feeding pipe is made of insulating materials, and the baffle is adopted
It is made of insulating materials；One layer insulating, the liquid nitrogen feeding mechanism and defeated nitrogen are set outside nitrogen feeding pipe between two fin
First part inside pipe is connected by the first connecting tube, and the second part inside the liquid nitrogen collection device and nitrogen feeding pipe is logical
The connection of the second connecting tube is crossed, 2 aeration rings are provided on the nitrogen feeding pipe, are tightly connected outside the aeration ring and nitrogen feeding pipe,
The tracheae is mounted on inside the first part of nitrogen feeding pipe, and described tracheae one end is inlet end, and the inlet end is arranged in defeated nitrogen
The outside at tube opening end, the tracheae other end are closed end, 2 gas nozzles are arranged on the tracheae, the gas nozzle passes through defeated nitrogen
Its gas outlet of tube wall is arranged inside aeration ring；The integrated pipe includes water-supply-pipe and exhaust pipe, and the exhaust pipe setting exists
Above water-supply-pipe.
Preferably, vent valve is installed, the vent valve is made of ventilative and waterproof material on the exhaust pipe.
Preferably, aeration ring is made of rubber material.
Preferably, the fin is made of Steel material.
The present invention has the advantage that: structure letter, and low manufacture cost can effectively expand the elimination of weld diameter and answer
Power.
Detailed description of the invention
Such as the structural schematic diagram that Fig. 1 is the expanding equipment of a kind of liquid nitrogen pipes of the invention；
Fig. 2 is for a kind of schematic diagram of internal structure of the expanding equipment of liquid nitrogen pipes of the invention；
Fig. 3 is a kind of left view schematic diagram of internal structure of the expanding equipment of liquid nitrogen pipes of the present invention；
Fig. 4 is A-A sectional view in Fig. 1；
Fig. 5 is B-B sectional view in Fig. 1；
Fig. 6 is C-C sectional view in Fig. 1；
Fig. 7 is to be mounted on schematic diagram in pipeline before a kind of expanding equipment expander of liquid nitrogen pipes of the present invention；
Fig. 8 is schematic diagram after a kind of expanding equipment expander of liquid nitrogen pipes of the present invention.
Wherein, 1, liquid nitrogen feeding mechanism；2, liquid nitrogen collection device；3, the first connecting tube；4, the second connecting tube；5, defeated nitrogen
Pipe；6, fin；7, aeration ring；8, integrated pipe；9, tracheae；10, baffle；11, gas nozzle；12, exhaust pipe；13, water-supply-pipe；14, thoroughly
Air valve；15, pipeline；16, ice berg；17, insulating layer.
Specific embodiment
With the drawings and specific embodiments, the present invention is described in further detail below.
As shown in Figure 1, a kind of expanding equipment of liquid nitrogen pipes, the expanding equipment of a kind of liquid nitrogen pipes include nitrogen feeding pipe 5,
Fin 6, aeration ring 7, tracheae 9, integrated pipe 8, liquid nitrogen feeding mechanism 1, liquid nitrogen collection device 2, the nitrogen feeding pipe 5 use insulation material
Material production, mainly prevents liquid nitrogen from absorbing heat during nitrogen feeding pipe and causes damages, the liquid nitrogen feeding mechanism 1 and nitrogen feeding pipe 5
Internal first part is connected by the first connecting tube 3, and the liquid nitrogen collection fills 2 and sets and the second part inside nitrogen feeding pipe 5
It is connected by the second connecting tube 4.
As shown in Figures 2 and 3, the 5 open at one end other end of nitrogen feeding pipe closure, 5 bosom of nitrogen feeding pipe are provided with gear
Piece 10, the baffle 10 will be divided into two parts, i.e. first part and second part inside nitrogen feeding pipe, described 10 one end of baffle with
On same section, baffle extends along nitrogen feeding pipe 5 toward closed end 5 open end of nitrogen feeding pipe, and stays between baffle 10 and closed end
There is a distance, the baffle 10 is made of insulating materials；2 fins, the fin 6 and defeated nitrogen are set on the nitrogen feeding pipe
It is tightly connected outside pipe 5, the integrated pipe 8 includes water-supply-pipe 13 and exhaust pipe 12, and the exhaust pipe 12 is arranged in water-supply-pipe 13
Vent valve 14 is installed, integrated pipe 8 is mounted on the surface of nitrogen feeding pipe, and vent valve 14 is using ventilative and anti-on the exhaust pipe of top
The production of water material.
One layer insulating 17 is set outside nitrogen feeding pipe between two fin 6 as shown in Figure 6, and the fin 6 uses steel
Material production, convenient for thermally conductive.
As shown in Figures 4 and 5,2 aeration rings 7, the aeration ring 7 and the company of sealing outside nitrogen feeding pipe 5 are provided on nitrogen feeding pipe 5
It connects, aeration ring 7 is made of rubber material, and the tracheae 9 is mounted on inside the first part of nitrogen feeding pipe 5, described 9 one end of tracheae
For inlet end, the outside of nitrogen feeding pipe open end is arranged in the inlet end, and 9 other end of tracheae is closed end, the tracheae
2 gas nozzles 11 of upper setting, the gas nozzle 11 pass through its gas outlet of 5 tube wall of nitrogen feeding pipe and are arranged inside aeration ring 7.
As described in Fig. 7 and 8, when in use, device is extend into pipeline 15, by the weld seam of pipeline be placed in two fins 6 it
Between, integrated pipe 8 is mounted on right above nitrogen feeding pipe 5, using air pump by tracheae 9 to 7 inner inflatable of aeration ring, when air pressure reaches
Stop inflation when certain value, tracheae 9 is sealed, the expansion of aeration ring 7 at this time is combined closely with 15 inner wall of pipeline, two aeration rings and pipe
Seal cavity is formed between road, then by water-supply-pipe to the seal cavity water delivery between two aeration rings, the intracorporal air of chamber can lead to
Exhaust pipe discharge is crossed, when water is full of cavity, water-supply-pipe is clogged；Liquid is inputted into nitrogen feeding pipe by liquid nitrogen feeding mechanism again
Nitrogen, liquid nitrogen is by nitrogen feeding pipe first part, then is flowed into nitrogen feeding pipe second part, passes through the second connection again eventually by nitrogen feeding pipe
Pipe enters liquid nitrogen collection device, when liquid nitrogen stream passes through fin, since fin is that steel make, around finned outer
Coolant-temperature gage sharply declines and freezes, formed ice berg 16, while water body while continually entering liquid nitrogen between two ice bergs also by
It gradually freezes, volume increases after water body freezes in closed space, can achieve the effect that expand commissure caliber.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, it will be apparent to an ordinarily skilled person in the art that technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (1)
1. a kind of expanding equipment of liquid nitrogen pipes, it is characterised in that: the expanding equipment of a kind of liquid nitrogen pipes includes nitrogen feeding pipe, wing
Piece, aeration ring, tracheae, integrated pipe, liquid nitrogen feeding mechanism, liquid nitrogen collection device, the nitrogen feeding pipe open at one end other end close
It closes, nitrogen feeding pipe bosom is provided with baffle, and the baffle will be divided into two parts, i.e. first part and second inside nitrogen feeding pipe
Part, described baffle one end and nitrogen feeding pipe open end are on same section, and baffle extends along nitrogen feeding pipe toward closed end, and baffle
There are a distances between closed end；2 fins are set on the nitrogen feeding pipe, and sealing connects outside the fin and nitrogen feeding pipe
It connects, the fin section is rounded；The fin is made of metal material, and the nitrogen feeding pipe is made of insulating materials, institute
Baffle is stated to be made of insulating materials；One layer insulating, the liquid nitrogen supply dress are set outside nitrogen feeding pipe between two fin
It sets and is connect with the first part inside nitrogen feeding pipe by the first connecting tube, the inside the liquid nitrogen collection device and nitrogen feeding pipe
Two parts are connected by the second connecting tube, and 2 aeration rings are provided on the nitrogen feeding pipe, and the aeration ring and nitrogen feeding pipe outside are close
Envelope connection, the tracheae are mounted on inside the first part of nitrogen feeding pipe, and described tracheae one end is inlet end, the inlet end setting
In the outside of nitrogen feeding pipe open end, the tracheae other end is closed end, 2 gas nozzles is arranged on the tracheae, the gas nozzle is worn
Its gas outlet of nitrogen feeding pipe tube wall is crossed to be arranged inside aeration ring；The integrated pipe includes water-supply-pipe and exhaust pipe, the exhaust pipe
It is arranged above water-supply-pipe；Vent valve is installed, the vent valve is made of ventilative and waterproof material on the exhaust pipe；It is described
Fin is made of Steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510216165.7A CN104801621B (en) | 2015-05-02 | 2015-05-02 | A kind of expanding equipment of liquid nitrogen pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510216165.7A CN104801621B (en) | 2015-05-02 | 2015-05-02 | A kind of expanding equipment of liquid nitrogen pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104801621A CN104801621A (en) | 2015-07-29 |
| CN104801621B true CN104801621B (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510216165.7A Active CN104801621B (en) | 2015-05-02 | 2015-05-02 | A kind of expanding equipment of liquid nitrogen pipes |
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| CN (1) | CN104801621B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102687A (en) * | 2019-06-11 | 2019-08-09 | 广东工业大学 | A kind of low temperature compression apparatus for reducing diameter |
| CN114561526A (en) * | 2022-02-24 | 2022-05-31 | 山东齐鲁石化机械制造有限公司 | Pipeline harmful residual stress relieving device and using method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54134064A (en) * | 1978-04-11 | 1979-10-18 | Mitsubishi Heavy Ind Ltd | Pipe expansion |
| JP3467545B2 (en) * | 2000-10-17 | 2003-11-17 | オーエヌ工業株式会社 | Expansion device for thin-walled stainless steel pipe |
| CN102641936A (en) * | 2012-05-08 | 2012-08-22 | 哈尔滨工业大学 | Tubing bulging device and method using internal heating and pressing |
| JP2014069207A (en) * | 2012-09-28 | 2014-04-21 | Mitsubishi Heavy Ind Ltd | Apparatus and method for expanding pipe diameter |
| CN103433395A (en) * | 2013-09-03 | 2013-12-11 | 西安胜智航空科技有限公司 | Expanding device for shape memory alloy pipe joint |
| CN203610465U (en) * | 2013-11-21 | 2014-05-28 | 番禺珠江钢管有限公司 | Pipe end water pressure composite device for bimetal composite pipe |
| CN204625709U (en) * | 2015-05-02 | 2015-09-09 | 汪浩 | The expanding equipment of a kind of pipeline |
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| Publication number | Publication date |
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| CN104801621A (en) | 2015-07-29 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181025 Address after: 224200 3 weft eight road, Dongtai Economic Development Zone, Yancheng City, Jiangsu Applicant after: Dongtai Hongren Gas Co., Ltd. Address before: 237400 Yao county Li Zhen Da Gu Dian Da Wei team, Huoqiu, Lu'an, Anhui Applicant before: Wang Hao |
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