CN103252400A - Method for sealing of pipe plate and pipe through expanding and connecting - Google Patents
Method for sealing of pipe plate and pipe through expanding and connecting Download PDFInfo
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- CN103252400A CN103252400A CN2012100378073A CN201210037807A CN103252400A CN 103252400 A CN103252400 A CN 103252400A CN 2012100378073 A CN2012100378073 A CN 2012100378073A CN 201210037807 A CN201210037807 A CN 201210037807A CN 103252400 A CN103252400 A CN 103252400A
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- expanded joint
- pipe
- lubricant
- sealing
- expanding
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Abstract
The invention discloses a method for sealing of a pipe plate and a pipe through expanding and connecting. The method includes following steps: coating lubricant on the surface of an expanding and connecting portion of a pipe expander or the inner wall of an expanded and connected section of the pipe, and inserting the expanding and connecting portion into the expanded and connected section of the pipe. By the method, frictional force can be evidently reduced, temperature rise in expanding and connecting can be lowered, one-time expanding and connecting qualification rate can be improved and stabilized, expanding and connecting abrasion of the pipe expander can be remarkably reduced, service cycle of the pipe expander can be prolonged, consumption of the pipe expander can be lowered, and expanding and connecting cost can be substantially lowered.
Description
Technical field
The present invention relates to being connected of metal tube and metallic plate, the method for especially a kind of tube sheet and the sealing of pipe expanded joint.
Background technology
At present, the step of the method for tube sheet and pipe expanded joint sealing is as follows: 1. prepare electric tube expander and tube expander; 2. be inserted into after being connected to tube expander on the electric tube expander pipe by expanded joint in the expanded joint section; 3. extract tube expander out cooling behind about 5 of the expanded joint; 4. cool to continuation expanded joint in back about 40 degrees centigrade.There is following shortcoming in existing expanding joint method in the actual production: the expanded joint first-time qualification rate is low and unstable, and tube expander is short service life, expanded joint cost height.Cause the reason of above-mentioned defective to be by analysis: because expanded joint frictional force is big, to force expanded joint speed instability, cause the tension force hoop inhomogeneous, make expanded joint attenuate amount inhomogeneous (local sudden change forms seal channel) and cause the expanded joint blow-by; Add frictional force and make the temperature rise of expanded joint place, accelerate tube expander wear damage and copper pipe inwall scratch peeling, thereby cause the expanded joint first-time qualification rate low and unstable; In addition, because frictional force makes that greatly the tube expander wear damage is fast, the tube expander life-span is short, and the tube expander consumption is big, expanded joint cost height.
Summary of the invention
Technical problem to be solved by this invention is, the method for a kind of tube sheet and pipe expanded joint sealing is provided, and it can improve the disposable qualification rate of expanded joint, improves the life cycle of tube expander, reduces the expanded joint cost.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the method for a kind of tube sheet and the sealing of pipe expanded joint, its comprise the steps: expanded joint with tube expander partly be inserted into pipe by the expanded joint section, also comprise the steps: described expanded joint partly be inserted into described pipe by the expanded joint section before, on the surface of described expanded joint part or described pipe by the coated inner wall lubricant of expanded joint section.
Preferably, described lubricant is fluid lubricant.
Preferably, described lubricant is water-based lubricant.
Preferably, described lubricant is partly to be inserted into by the expanded joint with described tube expander to be coated under the liquid level in the container that is loaded with described lubricant on the described expanded joint part.
Preferably, the liquid level of lubricant described in the described container is 50 to 60mm.
Preferably, behind 6 to 10 described pipes of every expanded joint at the surface applied of described expanded joint part described lubricant once.
Preferably, described tube sheet is the package tube sheet, and described pipe is copper heat exchanger tube.
The method of tube sheet provided by the present invention and the sealing of pipe expanded joint, do not change the service condition (equipment, tube expander, pore roughness and expanded joint parameter) of expanded joint, by making with lubricator at the package expanded joint, significantly reduced expanded joint frictional resistance, and frictional resistance has been converted into tension force; And can also reduce the generation of expanded joint heat, significantly reduce the temperature rise at expanded joint place, thereby improved the expanded joint environment.Compared with prior art, the present invention has the following advantages:
1, the expanded joint wall thickness reduction improves more than 15%.Through test, the expanded joint wall thickness reduction that the expanded joint wall thickness reduction of 15.88 * 0.58 pipe has improved 16.07%, 19.05 * 1.13 pipe has improved 18.75%;
2, the expanded joint temperature rise reduces.As can be seen from Table 1, the temperature rise of the expanding joint method of prior art is big, and tube expander and tube wall easily produce the hot tearing layer and shorten the tube expander life cycle, and expanding joint method temperature rise of the present invention is little, is conducive to protect tube expander and tube wall not to be destroyed;
Table 1:
3, improve the disposable qualification rate of package expanded joint.As can be seen from Table 2, the disposable qualification rate of package expanded joint by before below 95% and unstable, bring up to more than 98%, qualification rate is high and stable.
Table 2:
4, significantly reduce the expanded joint cost.Nearly 4 times (seeing Table 3) before the life-span of tube expander extends to, the consumption of actual tube expander reduces by 2/3 (seeing Table 4).
Table 3:
Table 4:
5, in addition, the method for tube sheet provided by the present invention and the sealing of pipe expanded joint, its lubricant is to adopt to be fit to the water-based lubricant that the package expanded joint uses, aqueous lubricating liquid can also be got certain cooling effect.
This shows that the method for tube sheet provided by the present invention and the sealing of pipe expanded joint can significantly reduce friction, and reduces the expanded joint temperature rise, improves and stablize disposable expanded joint qualification rate; Can significantly reduce simultaneously the wearing and tearing of tube expander expanded joint, improve its life cycle, reduce the consumption of tube expander, significantly reduce the expanded joint cost.
Description of drawings
Fig. 1 is that tube expander inserts the cut-away view in the pipe.
Description of reference numerals: 1-tube expander, 1a-expanded joint part, 2-tube sheet, 3-pipe, 3a-pipe by expanded joint section, 4-lubricant layer.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated:
The method of the tube sheet of one of them embodiment of the present invention and the sealing of pipe expanded joint is used for the expanded joint sealing of package tube sheet and copper heat exchanger tube, and its step is as follows:
1, checks and prepares electric tube expander and tube expander 1.
2, prepare lubricant.The lubricant of present embodiment is the liquid or solid lubricant, is preferably fluid lubricant.Further preferred, fluid lubricant is for being fit to the water-based lubricant of package expanded joint, and aqueous lubricating liquid can also be got certain cooling effect.Lubricant is contained in
Special container in, the liquid level height is preferably 50mm～60mm.
3, the expanded joint part 1a of tube expander 1 is inserted under the liquid level in the ready container that is loaded with lubricant, with a certain amount of lubricant of surface adhesion (about 1～2ml) at the expanded joint part 1a of tube expander 1.
4, the mandrel square toes of tube expander 1 are imported on the electric tube expander, again the expanded joint part 1a of tube expander 1 is inserted pipe 3 by expanded joint section 3a, expanded joint immediately.At this moment, the lubricant layer 4 performance lubrications that the expanded joint part 1a of tube expander 1 adheres to, lubricated mandrel and satellite rotor and protect the contact-making surface of frame lubricate satellite rotor and copper pipe by the internal face of expanded joint section 3a.
5, behind 6 to 10 pipes 3 of expanded joint, can continuous expanded joint after according to the method re-lubrication in the 3rd step with tube expander 1.
The tube sheet 2 of present embodiment and the method for pipe 3 expanded joints sealing can significantly reduce friction, and reduce the expanded joint temperature rise, improve and stablize disposable expanded joint qualification rate; Can significantly reduce simultaneously the wearing and tearing of tube expander 1 expanded joint, improve its life cycle, reduce the consumption of tube expander 1, significantly reduce the expanded joint cost.
Be specific embodiments of the invention only below, do not limit protection scope of the present invention with this; Any replacement and the improvement done on the basis of not violating the present invention's design all belong to protection scope of the present invention.
Claims (7)
1. the method for a tube sheet and pipe expanded joint sealing, its comprise the steps: expanded joint with tube expander partly be inserted into pipe by the expanded joint section, it is characterized in that: also comprise the steps: described expanded joint partly be inserted into described pipe by the expanded joint section before, on the surface of described expanded joint part or described pipe by the coated inner wall lubricant of expanded joint section.
Tube sheet according to claim 1 and pipe expanded joint the sealing method, it is characterized in that: described lubricant is fluid lubricant.
Tube sheet according to claim 2 and pipe expanded joint the sealing method, it is characterized in that: described lubricant is water-based lubricant.
4. the method for tube sheet according to claim 3 and pipe expanded joint sealing, it is characterized in that: described lubricant is partly to be inserted into by the expanded joint with described tube expander to be coated under the liquid level in the container that is loaded with described lubricant on the described expanded joint part.
5. the method for tube sheet according to claim 4 and pipe expanded joint sealing, it is characterized in that: the liquid level of the described lubricant in the described container is 50 to 60mm.
6. the method for tube sheet according to claim 1 and pipe expanded joint sealing is characterized in that: behind 6 to 10 described pipes of every expanded joint at the surface applied of described expanded joint part described lubricant once.
7. according to the method for each described tube sheet of claim 1 to 6 and the sealing of pipe expanded joint, it is characterized in that: described tube sheet is the package tube sheet, and described pipe is copper heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210037807.3A CN103252400B (en) | 2012-02-17 | 2012-02-17 | A kind of method that tube sheet and pipe expanded joint seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210037807.3A CN103252400B (en) | 2012-02-17 | 2012-02-17 | A kind of method that tube sheet and pipe expanded joint seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103252400A true CN103252400A (en) | 2013-08-21 |
| CN103252400B CN103252400B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210037807.3A Active CN103252400B (en) | 2012-02-17 | 2012-02-17 | A kind of method that tube sheet and pipe expanded joint seal |
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| CN (1) | CN103252400B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710549A (en) * | 2016-02-06 | 2016-06-29 | 保定多田冷却设备有限公司 | Technology of welding stainless steel cooling pipe and pipe plate of air cooler for transformer |
| CN106440480A (en) * | 2016-12-12 | 2017-02-22 | 远大空调有限公司 | High-temperature generator for lithium bromide cold and warm water unit and pipe expanding method |
| CN106766343A (en) * | 2016-12-12 | 2017-05-31 | 远大空调有限公司 | A kind of lithium bromide cold and hot water machine group and expansion tube method |
| CN108507221A (en) * | 2017-02-28 | 2018-09-07 | 远大空调有限公司 | A kind of lithium bromide cold and hot water/heat pump unit using full Ti-heat exchanger |
| CN111360533A (en) * | 2020-03-11 | 2020-07-03 | 江西华东船业有限公司 | Automatic assembly mechanism |
| CN113084019A (en) * | 2020-01-09 | 2021-07-09 | 重庆华超金属有限公司 | Expansion joint process and expansion joint structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005238765A (en) * | 2004-02-27 | 2005-09-08 | Canon Inc | Method for covering base material with tube and fixing belt manufactured using it |
| CN2839750Y (en) * | 2005-05-28 | 2006-11-22 | 杜明乾 | Sealing device for pipe expander |
| CN101954566A (en) * | 2010-05-19 | 2011-01-26 | 张家港市恒强冷却设备有限公司 | Process for fixedly connecting titanium cooling tube in cooler and radiating fins and titanium tube plate |
-
2012
- 2012-02-17 CN CN201210037807.3A patent/CN103252400B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005238765A (en) * | 2004-02-27 | 2005-09-08 | Canon Inc | Method for covering base material with tube and fixing belt manufactured using it |
| CN2839750Y (en) * | 2005-05-28 | 2006-11-22 | 杜明乾 | Sealing device for pipe expander |
| CN101954566A (en) * | 2010-05-19 | 2011-01-26 | 张家港市恒强冷却设备有限公司 | Process for fixedly connecting titanium cooling tube in cooler and radiating fins and titanium tube plate |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710549A (en) * | 2016-02-06 | 2016-06-29 | 保定多田冷却设备有限公司 | Technology of welding stainless steel cooling pipe and pipe plate of air cooler for transformer |
| CN105710549B (en) * | 2016-02-06 | 2018-05-01 | 保定多田冷却设备有限公司 | A kind of transformer forced air cooler stainless steel cooling pipe and Tube-sheet Welding technique |
| CN106440480A (en) * | 2016-12-12 | 2017-02-22 | 远大空调有限公司 | High-temperature generator for lithium bromide cold and warm water unit and pipe expanding method |
| CN106766343A (en) * | 2016-12-12 | 2017-05-31 | 远大空调有限公司 | A kind of lithium bromide cold and hot water machine group and expansion tube method |
| CN108507221A (en) * | 2017-02-28 | 2018-09-07 | 远大空调有限公司 | A kind of lithium bromide cold and hot water/heat pump unit using full Ti-heat exchanger |
| CN113084019A (en) * | 2020-01-09 | 2021-07-09 | 重庆华超金属有限公司 | Expansion joint process and expansion joint structure |
| CN111360533A (en) * | 2020-03-11 | 2020-07-03 | 江西华东船业有限公司 | Automatic assembly mechanism |
| CN111360533B (en) * | 2020-03-11 | 2021-07-06 | 芜湖易泽中小企业公共服务股份有限公司 | Automatic assembly mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103252400B (en) | 2016-03-09 |
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