CN105179846A - Rigid insulating joint manufacturing method - Google Patents
Rigid insulating joint manufacturing method Download PDFInfo
- Publication number
- CN105179846A CN105179846A CN201510659803.2A CN201510659803A CN105179846A CN 105179846 A CN105179846 A CN 105179846A CN 201510659803 A CN201510659803 A CN 201510659803A CN 105179846 A CN105179846 A CN 105179846A
- Authority
- CN
- China
- Prior art keywords
- overcoat
- flange
- right flange
- insulation
- manufacture method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000003754 machining Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 28
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 20
- 239000003365 glass fiber Substances 0.000 claims description 20
- 238000007514 turning Methods 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 abstract description 8
- 229920000647 polyepoxide Polymers 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000010292 electrical insulation Methods 0.000 abstract description 2
- 239000011152 fibreglass Substances 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
- F16L25/02—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for electrically insulating the two pipe ends of the joint from each other
- F16L25/026—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for electrically insulating the two pipe ends of the joint from each other for flanged joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Insulators (AREA)
Abstract
The invention provides a rigid insulating joint manufacturing method. The method comprises the steps that firstly, winding type glass fiber-reinforced plastic machining is conducted on a right flange; secondly, a jacket and the right flange are heated and assembled; thirdly, spot welding is conducted on a left flange and the jacket along the four points on the circumference; and finally, destressing is conducted, and the left flange and the jacket are welded into a whole. By means of the method, the mechanical strength is improved, fragility is low, and toughness is high; moreover, the jacket and winding type glass fiber-reinforced plastic of the right flange are combined through the heating and assembling process, the requirements for electrical insulation properties and the mechanical strength are met, the bending moment resistance of an insulating joint is greatly improved, and the technical problems of poor sealing performance and poor insulating properties caused by high fragility and low toughness of cured epoxy resin in the prior art are solved.
Description
Technical field
The present invention relates to a kind of insulating joint manufacture method, especially a kind of rigid insulation joint manufacture method.
Background technique
Annular space space between the right flange of common steel insulating joint and overcoat is filling in the molten state with epoxy resin after assembling, after epoxy resin cure, fragility is large, toughness is little, due to above reason make insulating joint in use bear pipeline moment of flexure time, epoxy resin embrittlement produces seal failure, dielectric leakage makes left and right flange electrical insulation lose efficacy, and has both lost security seal and has also lost insulating properties.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of rigid insulation joint manufacture method, first right flange is carried out the processing of winding type glass fibre reinforced plastics, dry dress overcoat and right flange again, afterwards by left flange and overcoat circumferentially 4 spot welding, last destressing, is welded into one by left flange and overcoat, after solving the epoxy resin cure existed in prior art, fragility is large, toughness is little and the technical problem of the poor sealing performance that causes and insulating property difference.
To achieve these goals, the technical solution used in the present invention is: rigid insulation joint manufacture method, the steps include:
1), by right flange carry out the processing of winding type glass fibre reinforced plastics: right flange machining completed, carry out the processing of winding type glass fibre reinforced plastics in its flange convex edge and flange root, complete the rear turning of solidification;
2), dry dress overcoat and right flange: after externally cover carries out heating and being incubated, utilize insulating joint mounting plate, right flange is put into overcoat and is cooled to normal temperature, make overcoat and right flange root winding type glass fibre reinforced plastics form interference fit;
3), by the overcoat after baking dress and right flange put into the O RunddichtringO of right flange, the O RunddichtringO of left flange, left flange successively, press machine is exerted pressure, by left flange and overcoat circumferentially 4 spot welding;
4), destressing, left flange and overcoat are welded into one.
In described step 1), turning tolerance of size is φ XX
+ 0.3 + 0.2, outer casing internal diameter tolerance of size with matching is φ XX
0 -0.1.
Described step 2) in externally to overlap according to the size of overcoat and carry out heating and being incubated, heating-up temperature 120 DEG C ± 2 DEG C; Holding time: outside dimension D≤φ 80mm, insulation 30 ± 5min; Outside dimension scope φ 80 < D≤φ 150mm, insulation 45 ± 5min; Outside dimension scope φ 150 < D≤φ 350mm, insulation 70 ± 5min; Outside dimension scope φ 350 < D≤φ 550mm, insulation 90 ± 5min; Dimensional range D > φ 550mm, insulation 120 ± 5min.
Described step 2) in right flange put into overcoat and uses 15 DEG C of water-cooleds to normal temperature.
On press machine, 5.0MPa pressure is imposed to left flange in described step 3), make O type circle produce gapless pretightening force.
With filling weldering, left flange and overcoat circumferential weld are welded into one in described step 4).
The beneficial effect of the invention is: the invention provides a kind of rigid insulation joint manufacture method, first right flange is carried out the processing of winding type glass fibre reinforced plastics, dry dress overcoat and right flange again, afterwards by left flange and overcoat circumferentially 4 spot welding, last destressing, is welded into one by left flange and overcoat.The inventive method utilizes dries the assembling of dress technique, then overcoat cooling and right flange winding type glass fibre reinforced plastics are linked together; Winding type glass fibre reinforced plastics compares with the epoxy resin of filling solidification, and winding type glass fibre reinforced plastics had both possessed electrical insulating property, turn improved mechanical strength, and fragility is little, toughness is high, and after epoxy resin cure, fragility is large, toughness is little.So, overcoat and right flange winding type glass fibre reinforced plastics dry dress technique and combine and both meet electric insulating quality, mechanical strength, also the raising insulating joint requirement of bending resistance square performance greatly, and after solving the epoxy resin cure existed in prior art, fragility is large, toughness is little and the technical problem of the poor sealing performance that causes and insulating property difference.
Accompanying drawing explanation
Fig. 1: be the structural representation of the invention.
Wherein, the right flange of 1-, 2-right flange root winding type glass fibre reinforced plastics, 3-overcoat, 4-felt pad, 5-right flange convex edge winding type glass fibre reinforced plastics, 6-insulated enclosure pad, 7-O RunddichtringO, the left flange of 8-.
Embodiment
Rigid insulation joint manufacture method, the steps include:
1, right flange is carried out the processing of winding type glass fibre reinforced plastics: the right flange 1 machining completed, carry out the processing of winding type glass fibre reinforced plastics in its flange convex edge and flange root, complete the rear turning of solidification.
2, dress overcoat and right flange is dried: after overcoat 3 is heated and being incubated, utilize insulating joint mounting plate, right flange 1 is put into overcoat 3 and is cooled to normal temperature, make overcoat 3 and right flange root winding type glass fibre reinforced plastics 2 form interference fit.
3, the overcoat 3 after baking dress and right flange 1 are put into the O RunddichtringO of right flange, the O RunddichtringO 7 of left flange, left flange 8 successively, press machine is exerted pressure, by left flange 8 and overcoat 3 circumferentially 4 spot welding.
4, destressing, is welded into one by left flange 8 and overcoat 3.
During practical application, concrete steps are:
1), right flange winding type glass fibre reinforced plastics manufactures: the right flange 1 machining completed, carry out the processing of winding type glass fibre reinforced plastics in its flange convex edge and flange root, solidify laggard driving completely and cut, its tolerance of size is φ XX
+ 0.3 + 0.2, outer casing internal diameter tolerance of size with matching is φ XX
0 -0.1;
2), according to overcoat 3 size overcoat 3 is heated, heating-up temperature 120 DEG C ± 2 DEG C; Holding time: outside dimension D≤φ 80mm, insulation 30 ± 5min; Dimensional range φ 80 < D≤φ 150mm, insulation 45 ± 5min; Dimensional range φ 150 < D≤φ 350mm, insulation 70 ± 5min; Dimensional range φ 350 < D≤φ 550mm, insulation 90 ± 5min; Dimensional range D > φ 550mm, insulation 120 ± 5min; Overcoat 3 is under 120 DEG C and corresponding holding time, and its internal diameter increases 0.4-0.5mm, utilizes insulating joint mounting plate, right flange is put into overcoat, by 15 DEG C of water-cooleds to normal temperature, overcoat 3 and right flange winding type glass fibre reinforced plastics 2 is made to form interference fit, magnitude of interference 0.2-0.3mm;
3) overcoat 3 after, drying dress and right flange 2 put into O RunddichtringO, insulating pad, the O RunddichtringO of left flange, the left flange 8 of right flange successively, press machine imposes 5.0MPa pressure to left flange 8, O type circle is made to produce gapless pretightening force, by left flange 8 and overcoat 3 circumferentially 4 spot welding;
4), remove pressure, with filling weldering by left flange 8 and the welding of overcoat 3 circumferential weld, make it into and be integrated.
The bending resistance square rigid insulation joint of this explained hereafter and the comparison of common insulating joint beneficial effect:
Claims (6)
1. rigid insulation joint manufacture method, the steps include:
1), by right flange carry out the processing of winding type glass fibre reinforced plastics: the right flange (1) machining completed, carry out the processing of winding type glass fibre reinforced plastics in its flange convex edge and flange root, complete the rear turning of solidification;
2) dress overcoat and right flange, is dried: after overcoat (3) is heated and being incubated, utilize insulating joint mounting plate, right flange (1) is put into overcoat (3) and is cooled to normal temperature, make overcoat (3) and right flange root winding type glass fibre reinforced plastics (2) form interference fit;
3), by the overcoat (3) after baking dress and right flange (1) put into the O RunddichtringO of right flange, the O RunddichtringO (7) of left flange, left flange (8) successively, press machine is exerted pressure, by left flange (8) and overcoat (3) circumferentially 4 spot welding;
4), destressing, left flange (8) and overcoat (3) are welded into one.
2. rigid insulation joint manufacture method according to claim 1, is characterized in that: in described step 1), turning tolerance of size is φ XX
+ 0.3 + 0.2, outer casing internal diameter tolerance of size with matching is φ XX
0 -0.1.
3. rigid insulation joint manufacture method according to claim 1, is characterized in that: described step 2) in externally to overlap according to the size of overcoat (3) and carry out heating and being incubated, heating-up temperature 120 DEG C ± 2 DEG C; Holding time: outside dimension D≤φ 80mm, insulation 30 ± 5min; Outside dimension scope φ 80 < D≤φ 150mm, insulation 45 ± 5min; Outside dimension scope φ 150 < D≤φ 350mm, insulation 70 ± 5min; Outside dimension scope φ 350 < D≤φ 550mm, insulation 90 ± 5min; Dimensional range D > φ 550mm, insulation 120 ± 5min.
4. rigid insulation joint manufacture method according to claim 1, is characterized in that: described step 2) in right flange (1) put into overcoat (3) and uses 15 DEG C of water-cooleds to normal temperature.
5. rigid insulation joint manufacture method according to claim 1, is characterized in that: on press machine, impose 5.0MPa pressure to left flange in described step 3), makes O type circle produce gapless pretightening force.
6. rigid insulation joint manufacture method according to claim 1, is characterized in that: with filling weldering, left flange (8) and overcoat (3) circumferential weld are welded into one in described step 4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659803.2A CN105179846B (en) | 2015-10-14 | 2015-10-14 | Rigid insulation connector manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659803.2A CN105179846B (en) | 2015-10-14 | 2015-10-14 | Rigid insulation connector manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179846A true CN105179846A (en) | 2015-12-23 |
| CN105179846B CN105179846B (en) | 2019-10-18 |
Family
ID=54902132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510659803.2A Active CN105179846B (en) | 2015-10-14 | 2015-10-14 | Rigid insulation connector manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179846B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729492Y (en) * | 2004-10-20 | 2005-09-28 | 南京航天晨光股份有限公司 | High pressure connecting joint of fibre reinforced thermoplastic plastic composite pipe |
| CN203036119U (en) * | 2013-01-16 | 2013-07-03 | 沈阳永业实业有限公司 | Welding-free insulating joint |
| CN203036127U (en) * | 2013-01-15 | 2013-07-03 | 沈阳永业实业有限公司 | Welding-free insulation connector |
| CN103470913A (en) * | 2013-07-05 | 2013-12-25 | 周立超 | Connecting structure and manufacturing and connecting method of metal glass steel FRP (Fiber-glass Reinforced Plastics) lining rubber and plastic subsea pipeline |
| US20140232103A1 (en) * | 2013-02-18 | 2014-08-21 | The Boeing Company | Bulkhead Fitting |
| CN203868536U (en) * | 2014-05-16 | 2014-10-08 | 浙江经纬集团环保工程有限公司 | FRP (fiber reinforced plastic) reinforced high-strength polyethylene pipe for trenchless construction |
| CN204628800U (en) * | 2015-05-11 | 2015-09-09 | 杭州介通电缆保护管有限公司 | The butt joint of super large caliber steel-plastic composite pipe site operation |
-
2015
- 2015-10-14 CN CN201510659803.2A patent/CN105179846B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729492Y (en) * | 2004-10-20 | 2005-09-28 | 南京航天晨光股份有限公司 | High pressure connecting joint of fibre reinforced thermoplastic plastic composite pipe |
| CN203036127U (en) * | 2013-01-15 | 2013-07-03 | 沈阳永业实业有限公司 | Welding-free insulation connector |
| CN203036119U (en) * | 2013-01-16 | 2013-07-03 | 沈阳永业实业有限公司 | Welding-free insulating joint |
| US20140232103A1 (en) * | 2013-02-18 | 2014-08-21 | The Boeing Company | Bulkhead Fitting |
| CN103470913A (en) * | 2013-07-05 | 2013-12-25 | 周立超 | Connecting structure and manufacturing and connecting method of metal glass steel FRP (Fiber-glass Reinforced Plastics) lining rubber and plastic subsea pipeline |
| CN203868536U (en) * | 2014-05-16 | 2014-10-08 | 浙江经纬集团环保工程有限公司 | FRP (fiber reinforced plastic) reinforced high-strength polyethylene pipe for trenchless construction |
| CN204628800U (en) * | 2015-05-11 | 2015-09-09 | 杭州介通电缆保护管有限公司 | The butt joint of super large caliber steel-plastic composite pipe site operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105179846B (en) | 2019-10-18 |
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