CN1410696A - Technical method of connecting corrugated pipes using heat shrinking pipe - Google Patents
Technical method of connecting corrugated pipes using heat shrinking pipe Download PDFInfo
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- CN1410696A CN1410696A CN 02134083 CN02134083A CN1410696A CN 1410696 A CN1410696 A CN 1410696A CN 02134083 CN02134083 CN 02134083 CN 02134083 A CN02134083 A CN 02134083A CN 1410696 A CN1410696 A CN 1410696A
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- bellows
- heat
- shrink tube
- connect
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Abstract
The procedures of the technique are as follows. The thermal shrinkage tube is pulled and covered on the abutting end of the corrugated pipe to be connected. The two abutting ends of the corrugated pipes to be connected are burnished, aligned and fixed as well as kept a distance from ground. The following steps are carried out: preheating the surfaces burnished, moving the thermal shrinkage tube to the burnished place of the corrugated pipe and using wedge shape back up block to support one end of the corrugated pipe. Baking procedure is carried out from one end of the thermal shrinkage tube around the circumferential direction evenly to the other end with the wedge shape back up block supported, meanwhile the pressure is applied to the shrank part.
Description
Technical field
The invention provides a kind of connection technological method of bellows, particularly relate to a kind of technological method that connects bellows with heat-shrink tube.
Background technique
Dual mode is generally adopted in the connecting means of bellows in the prior art, and seal ring is inserted in first bellows joint, compresses with socket joint or clip again; It two is that hot melt connects, and is about to two bellows connecting ends and directly welds.The former shortcoming is that the strength that compresses is inhomogeneous, and seal ring is fragile, causes leakage, and the cost height; The latter easily misplaces during welding because the ripple tube wall is thinner, connects insecurely, also needs power supply.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, a kind of power supply that do not need be provided, firm and reliable connection, good airproof performance, and the joint still for flexible, and can keep the bellows profile connect the technological method of bellows with heat-shrink tube.
The present invention may further comprise the steps with the technological method that heat-shrink tube connects bellows:
1) heat-shrink tube is set on wherein one and waits to connect on the bellows, notice that heat-shrink tube inwall protective paper can not damage, prevent that dirt, dust and water from immersing the heat-shrink tube inwall.Polishing two waits to connect the outer surface of bellows butt end, and polishing length is apart from butt joint end face 30～600mm, generally decide according to the length of heat-shrink tube, and the cleaning buffed surface.
2) with two bellows end to be connect in the face of neat and fixing, the gap after the fitness for purpose both ends of the surface are closed up is less than 2.5mm, and makes it and overhead keep at a distance, be advisable in that its circumferencial direction is easy to operate with heating tool,
3) surface after the preheating polishing makes its surface temperature reach 40～60 ℃.
4) heat-shrink tube is moved in the buffed surface of bellows one end, generally making the bellows butt joint be positioned at heat-shrink tube 1/3 place is advisable, be as the criterion with heat-shrink tube and interface symmetry after shrinking, and remove protective paper in the heat-shrink tube, support the bellows the other end with the wedge shape support block simultaneously, promptly 2/3 place keeps circumferentially even at interval between heat-shrink tube and the bellows, helps improving the contraction uniformity and the profile pattern of heat-shrink tube.
5) begin evenly to be heated to the other end apart from the nearer end of butt joint end face from heat-shrink tube at circumferencial direction, the general flame heating that adopts, also can adopt special-purpose annular roaster heating, and extraction wedge shape support block, simultaneously to shrinking the position pressurization, as cylinder or rod or the heat protective gloves with waveform, hot melt adhesive is overflowed in the even more at last heat hot draw to end.
During big or fixing inconvenience, preferably adopt the heat fusion joint solid welding fixed, generally at least 4 places of spot welding in a circumferential direction when the diameter of bellows.For intensity and the sealing after increasing it and connecting, also can be behind two bellows preheating buffed surfaces, earlier twine jointing with shrink belt, shrink belt is plain edition or adds epistasis, the width that shrink belt twines is generally 20～500mm, be decided according to the actual requirements, and while heat hot contraction bands, make it be close to jointing more than one week.
The present invention is that with the advantage that heat-shrink tube connects the technological method of bellows this kind technological method connects the back good airproof performance, solid and reliable, the join strength height, can satisfy of the requirement of various uses bellows to join strength, and the joint still is a corrugated, beautiful shape, pipeline after the connection is the flexible pipe system of bar integral body, can be advantageously used in the piping erection construction of trenchless technology, also can be used for wearing intubation and repair broken pipe, be applicable to the connection of non-pressure pipeline, manage as PE, the PP pipe, single-wall corrugated pipes such as pvc pipe, the pipe of double-wall corrugated pipe and various helix structure tube walls connects.
Embodiment
Fig. 1: adopt the preceding linkage structure schematic representation of thermal shrinkage of the present invention
Fig. 2: adopt linkage structure schematic representation after the thermal shrinkage of the present invention
Embodiment 1: connecting internal diameter is the single-wall corrugated pipe of 110mm, and its operating procedure is as follows:
1) the PE heat-shrink tube is set on wherein one and waits to connect on the bellows, polishing two waits to connect the outer surface of bellows butt end, and polishing length is apart from butt joint end face 100mm, and the cleaning buffed surface.
2) with two bellows end to be connect in the face of neat and fixing, and make it and overhead keep at a distance.
3) surface after the preheating polishing makes its surface temperature reach 50 ± 10 ℃.
4) heat-shrink tube is moved in the buffed surface of bellows one end, make the bellows butt joint be positioned at heat-shrink tube 1/3 place, and remove protective paper in the heat-shrink tube, support the bellows the other end with the wedge shape support block simultaneously, promptly 2/3 place keeps circumferentially even at interval between heat-shrink tube and the bellows.
5) begin evenly to be heated to the other end at circumferencial direction apart from the nearer end of butt joint end face from heat-shrink tube with annular roaster, and extract the wedge shape support block simultaneously out, make it form the ripple profile to shrinking the position pressurization simultaneously, hot melt adhesive is overflowed in the even more at last heat hot draw to end.Performance index after the connection are as shown in table 1.
Embodiment 2: connecting internal diameter is the double-wall corrugated pipe of 300mm, and its operating procedure is as follows:
1) the PE heat-shrink tube is set on wherein one and waits to connect on the bellows, polishing two waits to connect the outer surface of bellows butt end, and polishing length is apart from butt joint end face 120mm, and the cleaning buffed surface.
2) with two bellows end to be connect in the face of neat and fix by hot melt spot welding 4 places, and make it and overhead keep at a distance.
3) surface after the preheating polishing makes its surface temperature reach 50 ± 10 ℃.
4) with contraction bands winding corrugated pipe jointing, and while heat hot contraction bands, it was close to more than the week.
5) heat-shrink tube is moved in the buffed surface of bellows one end, make the bellows butt joint be positioned at heat-shrink tube 1/3 place, and remove protective paper in the heat-shrink tube, support the bellows the other end with the wedge shape support block simultaneously, promptly 2/3 place keeps circumferentially even at interval between heat-shrink tube and the bellows.
6) begin evenly to be heated to the other end with flame at circumferencial direction from a heat-shrink tube end nearer apart from the butt end, and extract the wedge shape support block simultaneously out, to shrinking the position pressurization, make it form the ripple profile, hot melt adhesive is overflowed in the even more at last heat hot draw to end.Performance index after the connection are as shown in table 1.Wherein, two butt joint bellowss 1 jointings are wound with pyrocondensation belt 2, heat-shrink tube 3 be close to that pyrocondensation brings and bellows 1 outside, heat-shrink tube 3 internal layers have heat-fusing glue layer 4.
Table 1: adopt the performance index after the inventive method connects
| Connecting means | Test parameters | Requirement | Test result | Conclusion | |
| Performance | Data | ||||
| Dock connection with the PE heat-shrink tube | The interface distortion | 10％ | Non-leakage | Non-leakage | Qualified |
| The interface distortion | 5％ | ||||
| Hydraulic pressure | 0.05Mpa | ||||
| Hydraulic pressure | 0.15Mpa | ||||
| Connect corner | 2° | ||||
| Peeling strength | ＞65N/cm | ||||
Claims (3)
1, a kind of technological method with heat-shrink tube connection bellows is characterized in that step is as follows:
1) with heat-shrink tube earlier cover therein one wait to connect on the bellows, polishing two waits to connect the outer surface of bellows butt end, polishing length is apart from butt joint end face 30～600mm place, and cleans buffed surface;
2) two bellows end to be connect are also fixed in the face of neat, make it to keep at a distance with ground;
3) surface after the preheating polishing makes its surface temperature reach 40～60 ℃;
4) heat-shrink tube is moved in the bellows buffed surface, make the bellows butt joint be positioned at heat-shrink tube 1/3 place, and support bellows 2/3 place with the wedge shape support block;
5) begin evenly to be heated to the other end at circumferencial direction apart from the nearer end of butt joint end face from heat-shrink tube, and extract the wedge shape support block out, make it form the ripple profile to shrinking the position pressurization simultaneously, hot melt adhesive is overflowed in the even more at last heat hot draw to end.
2, as claimed in claim 1ly connect the technological method of bellows, it is characterized in that two wait to connect bellows end in the face of neat and fixedly be to adopt heat fusion joint to be welded to lack 4 places to fix with heat-shrink tube.
3, the technological method with heat-shrink tube connection bellows as claimed in claim 1, its feature is used shrink belt winding corrugated pipe jointing earlier behind the preheating buffed surface, and while heat hot contraction bands, makes it be close to the bellows jointing more than one week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02134083 CN1410696A (en) | 2002-11-18 | 2002-11-18 | Technical method of connecting corrugated pipes using heat shrinking pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02134083 CN1410696A (en) | 2002-11-18 | 2002-11-18 | Technical method of connecting corrugated pipes using heat shrinking pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1410696A true CN1410696A (en) | 2003-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02134083 Pending CN1410696A (en) | 2002-11-18 | 2002-11-18 | Technical method of connecting corrugated pipes using heat shrinking pipe |
Country Status (1)
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| CN (1) | CN1410696A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364758C (en) * | 2003-12-05 | 2008-01-30 | 深圳市沃尔核材股份有限公司 | Connect method of heat-shrinkable sleeve |
| CN100498036C (en) * | 2007-05-29 | 2009-06-10 | 广东联塑科技实业有限公司 | Steel band reinforced polyethylene spiral ripple pipe and its connection fitting and connection method |
| CN107131578A (en) * | 2017-04-13 | 2017-09-05 | 广东美的暖通设备有限公司 | Shock absorbing pipe and air conditioner |
| CN108253199A (en) * | 2018-03-05 | 2018-07-06 | 江苏桓通环境科技有限公司 | Internal-rib enhances polyethylene helical bellows and its connector connecting method |
| CN109681696A (en) * | 2019-01-14 | 2019-04-26 | 苏州交通工程集团有限公司 | The construction method of the buried straight degree of steel band reinforced spiral ripple pipe |
| CN111255044A (en) * | 2020-01-13 | 2020-06-09 | 中国一冶集团有限公司 | Flat-opening type rainwater pipe flexible connection structure and connection method |
-
2002
- 2002-11-18 CN CN 02134083 patent/CN1410696A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364758C (en) * | 2003-12-05 | 2008-01-30 | 深圳市沃尔核材股份有限公司 | Connect method of heat-shrinkable sleeve |
| CN100498036C (en) * | 2007-05-29 | 2009-06-10 | 广东联塑科技实业有限公司 | Steel band reinforced polyethylene spiral ripple pipe and its connection fitting and connection method |
| CN107131578A (en) * | 2017-04-13 | 2017-09-05 | 广东美的暖通设备有限公司 | Shock absorbing pipe and air conditioner |
| CN108253199A (en) * | 2018-03-05 | 2018-07-06 | 江苏桓通环境科技有限公司 | Internal-rib enhances polyethylene helical bellows and its connector connecting method |
| CN109681696A (en) * | 2019-01-14 | 2019-04-26 | 苏州交通工程集团有限公司 | The construction method of the buried straight degree of steel band reinforced spiral ripple pipe |
| CN111255044A (en) * | 2020-01-13 | 2020-06-09 | 中国一冶集团有限公司 | Flat-opening type rainwater pipe flexible connection structure and connection method |
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