CN101749519A - Pipeline joint infrared heating axial walking and pipe diameter adjusting device - Google Patents
Pipeline joint infrared heating axial walking and pipe diameter adjusting device Download PDFInfo
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- CN101749519A CN101749519A CN200810227777A CN200810227777A CN101749519A CN 101749519 A CN101749519 A CN 101749519A CN 200810227777 A CN200810227777 A CN 200810227777A CN 200810227777 A CN200810227777 A CN 200810227777A CN 101749519 A CN101749519 A CN 101749519A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 16
- 239000007789 gas Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to an infrared heating axial walking and pipe diameter adjusting device for pipeline joint sealing. Relates to the technical field of pipeline systems. The device consists of four double-crank wheels with two axial walking and pipe diameter adjusting mechanisms, wherein two pairs of double-crank wheels are symmetrically arranged at two sides of the central line of the upper surface of the pipeline to form two V-shaped wheel sets which form 45 degrees with the central line of the upper surface of the pipeline, and the axial central lines of the double-crank wheels are tangent to the pipeline (7); each axial walking and pipe diameter adjusting machine forms a gantry shape, and a gantry-shaped frame is formed by a walking wheel bracket (8) and walking wheel adjusting screw groups (9) at two ends; the lower end of the walking wheel adjusting screw group (9) is hinged with the middle part of the walking wheel adjusting frame (17), the upper end of the walking wheel adjusting frame (17) is hinged with one end below the walking wheel bracket (8), and the lower part is provided with a walking wheel (10); the walking wheel adjusting screw groups (9) are respectively provided with an adjusting screw group.
Description
Technical field
The present invention a kind ofly is applicable to preheating before joint coating on pipeline heating and the pipeline welding, welds the joint coating on pipeline infrared heating axial traveling and the pipe diameter adjusting device of after-baking.Relate to the pipe-line system technical field.
Background technique
Outer anticorrosion to buried pipeline, the measure of generally adopting is a coating protection at present.On-the-spot repaired mouth coating should have blending and continuity with pipe main body corrosion-inhibiting coating structure in theory as the important component part of whole coating system, two be coated with interlayer should form in conjunction with closely, seamlessly transit, even continuous safeguard structure.But in the on-the-spot field joint construction process, owing to be subjected to factor affecting such as weather conditions, construction equipment, workmen's technical merit, field joints coating technology control difficulty makes the repaired mouth difficult quality of site operation reach perfect condition than big of prefabrication more.The survey showed that for U.S. delivery safety office pipeline accident, and 45% pipeline accident is caused by the outer corrosion of pipeline, and most of outer corrosion occurs in the joint coating on pipeline place.This shows that joint coating on pipeline is to influence the most important key link of the final antiseptic property of whole pipe, therefore should further investigate, improve repaired mouth quality and reliability on-the-spot patch technology.
Pipeline generally adopts shrink belt (cover) repaired mouth both at home and abroad at present.During construction shrink belt (cover) is coated on the joint coating on pipeline place, then its skin is evenly heated the generation radial contraction, hose lining melts, and shrink belt (cover) is closely bonded together with body anticorrosive coat and repaired mouth steel tube surface reach the sealing corrosion effect.The flame gun manual mode of operation is all adopted in present domestic heat-contraction sleeve heating.The problem that this mode of heating exists mainly contains: the heat-contraction sleeve heating is inhomogeneous, and the temperature difference is big (particularly in the pipeline Lower Half), causes the burned or alice phenomenon of shrink sleeve easily; It is bigger that heating process is influenced by temperature; Time-consuming, labor strength is big, the operation easier height; The combustion efficiency and the energy transformation ratio of flame combustion mode are low, and the exhaust emission pollution environment that produces etc.The heat-contraction sleeve heating does not reach requirement, with directly causing the cohesive force and the peeling strength of heat-contraction sleeve to reduce, finally influences the pipeline corrosion protection quality.
Developed the heating plant that is used for pipeline thermal contraction bag band (cover) at present abroad.This equipment utilization catalytic combustion technology will carry out catalytic combustion after LPG and the air mixing, generate oxidation product and release heat.This equipment has greatly improved the combustion efficiency of fuel, and it is fast to have rate of heating, and the repaired mouth quality is good, and is pollution-free to anticorrosive coat, is convenient to characteristics such as carrying and installation.This equipment can be used for joint coating on pipeline heat-contraction sleeve heating under ditch, the ditch, also can be used for winter construction pipeline welding preceding preheating and postweld heat treatment.
But because after shrink belt (cover) was installed on the pipeline, shrink belt (cover) can form dangling of certain distance below pipeline, abroad heating plant heating surface and pipe ring can't be regulated to each position maintenance certain distance.Use external heating plant when heating, can cause the inhomogeneous of each position heating of shrink belt (cover) hoop, influence the repaired mouth quality shrink belt (cover).In addition, external heating plant takes to move along pipeline the mode of heating, avoiding the foaming phenomenon occurring in shrink belt (cover) heating process, but the travelling speed of heating plant and move at the uniform velocity that property is difficult to manually control, for the use of heating plant and the assurance of repaired mouth quality have brought bigger influence.
Summary of the invention
The objective of the invention is to invent a kind of different pipe diameter scopes, realization joint coating on pipeline of being applicable to and fix and move the joint coating on pipeline infrared heating axial traveling and the pipe diameter adjusting device of heating.
The present invention is axial traveling and the pipe diameter adjusting device in the infrared heating device for coated joints of pipelines, its formation in infrared heating device for coated joints of pipelines mainly is made up of main body frame 1, axial traveling and caliber controlling mechanism, heating system and gas control system as shown in Figure 1 and Figure 2.Two tool axial travelings and caliber controlling mechanism are installed in circumferential body framework 1 top that heating system is installed, and gas control system is installed in the bottom of main body frame 1; Gas control system has pipeline to communicate with heating system and controls the air inlet of heating system.
Axial traveling and caliber controlling mechanism such as Fig. 3-shown in Figure 6, it is made up of four hyperbolic wheels of two tool axial travelings and caliber controlling mechanism, two pairs of hyperbolic wheel wheels are symmetrically arranged in pipeline upper surface center line both sides and form two " V " shape wheels, become 45 degree with pipeline upper surface center line, the longitudinal center line of hyperbolic wheels and pipeline 7 are tangent; Every tool axial traveling and caliber controlling mechanism become " gantry " shape, and adjust screw rod group 9 by the road wheel at road wheel support 8 and two ends and form " gantry " shape frame, the straight-bar below one end rectangularity of road wheel support 8, the other end is connected
The type hook; The lower end that road wheel is adjusted screw rod group 9 is connected with road wheel adjustment rack 22 middle part hinges, the rectangular of road wheel adjustment rack 22 upper ends and road wheel support 8 belows one end and the other end
Type hook hinge connects, and road wheel 10 is arranged at the bottom; Road wheel is adjusted on screw rod group 9 (see figure 4)s adjustment screw rod group is housed respectively, and is adjustable to pipeline 7 centre distances, the opening and closing angle of regulating walking and caliber controlling mechanism; Axial traveling and caliber controlling mechanism are seen Fig. 8 and Fig. 9 with being connected of main body frame 1; Be the rectangular and the other end of road wheel support 8 belows one end
Type hook and main body frame 1 vertical being connected; Therefore equipment can be walked on the pipeline 7 of multiple bore, and pipeline 7 is carried out the repaired mouth heating; Because weight of equipment is lighter, only one to two people can promote its front and back walking on pipeline;
As seen, that the present invention has is in light weight, compact structure, volume is little, walking is flexible and pipe through advantage such as easy to adjust, can be widely used in the joint coating on pipeline of different operating mode occasions and different tube diameters, have broad application prospects.
Description of drawings
Fig. 1 infrared heating device for coated joints of pipelines general structure front view
Fig. 2 infrared heating device for coated joints of pipelines general structure side view
Fig. 3 axial traveling and pipe diameter adjusting device front view
Partial enlarged drawing among Fig. 4 Fig. 3
Fig. 5 axial traveling and pipe diameter adjusting device and main body frame plan view
Fig. 6 axial traveling and pipe diameter adjusting device and main body frame side view
1-main body frame 2-folding hinge wherein
3-base 4-hoisting mechanism
5-open-and-close mechanism 6-heater
7-pipeline 8-road wheel support
9-road wheel adjusting screw rod group 10-road wheel
Way switch 12-heater by-pass switch in the 11-heater
13-pressure controlling of liquefied gas table 14-heater main switch
15-combustion gas air pipe 16-heater nozzle
17-road wheel adjustment rack
Embodiment
Embodiment. this example is 1000mm above joint coating on pipeline infrared heating axial traveling and pipe diameter adjusting device experimental prototype, itself and infrared heating device for coated joints of pipelines general structure mainly are made up of main body frame 1, axial traveling and caliber controlling mechanism, heating system and gas control system as shown in Figure 1 and Figure 2.Two tool axial travelings and caliber controlling mechanism are installed in circumferential body framework 1 top that heating system is installed, and gas control system is installed in the bottom of main body frame 1; Gas control system has pipeline to communicate with heating system and controls the air inlet of heating system.
Axial traveling and caliber controlling mechanism such as Fig. 3-shown in Figure 6, it is made up of four hyperbolic wheels of two tool axial travelings and caliber controlling mechanism, two pairs of hyperbolic wheel wheels are symmetrically arranged in pipeline upper surface center line both sides and form two " V " shape wheels, become 45 degree with pipeline upper surface center line, the longitudinal center line of hyperbolic wheels and pipeline 7 are tangent; Every tool axial traveling and caliber controlling mechanism become " gantry " shape, and adjust screw rod group 9 by the road wheel at road wheel support 8 and two ends and form " gantry " shape frame, the straight-bar below one end rectangularity of road wheel support 8, the other end is connected
The type hook; The lower end that road wheel is adjusted screw rod group 9 is connected with road wheel adjustment rack middle part hinge, the rectangular of road wheel adjustment rack upper end and road wheel support 8 belows one end and the other end
Type hook hinge connects, and road wheel 10 is arranged at the bottom; Road wheel is adjusted on screw rod group 9 (see figure 4)s adjustment screw rod group is housed respectively; Axial traveling and caliber controlling mechanism are seen Fig. 5 and Fig. 6 with being connected of main body frame 1; Be the rectangular and the other end of road wheel support 8 belows one end
Type hook and main body frame 1 vertical being connected;
Axial traveling and caliber controlling mechanism key dimension: road wheel support 8 length are 1400mm, and width is 40mm, highly are 120mm;
When endless tube road main body frame 1 is opened, can implement installation and removal, can stride across the pipeline support pier smoothly when equipment is walked simultaneously on pipeline 7 equipment; Only need when closed framework open-and-close mechanism 5 is closed and can be carried out the anticorrosion construction operation to pipeline 7.
This device workflow is as follows:
1. heating equipment is placed on the pipeline 7 repaired mouth positions, adjust axial traveling and caliber controlling mechanism road wheel 10 to the appropriate location, heating equipment Lower Half both sides are closed and locked;
2. light heater 6;
3. when pipeline 7 repaired mouth places reach predetermined temperature, close heater 6 switches, and heating equipment is pushed into outside pipeline 7 repaired mouths sentence;
4. after shrink belt (cover) being overlapped on request well, install support device in shrink belt (cover) below;
5. heating equipment is pushed back, make heating equipment and shrink belt (cover) central position over against;
6. the joint coating on pipeline operation is finished, and heating equipment is pushed into pipeline 7 next repaired mouth positions.
This example is through test of many times, proves that it is in light weight, compact structure, volume be little, walking flexibly and pipe through easy to adjust, make the raising of repaired mouth efficient and quality, can be widely used in the joint coating on pipeline of different operating mode occasions and different tube diameters, have broad application prospects.
Claims (1)
1. joint coating on pipeline infrared heating axial traveling and pipe diameter adjusting device, it is characterized in that it is made up of four hyperbolics wheel of two tool axial travelings and caliber controlling mechanism, two pairs of hyperbolic wheel wheels are symmetrically arranged in pipeline upper surface center line both sides and form two " V " shape wheels, become 45 degree with pipeline upper surface center line, the longitudinal center line of hyperbolic wheels and pipeline (7) are tangent; Every tool axial traveling and caliber controlling mechanism become " gantry " shape, and adjust screw rod group (9) by the road wheel at road wheel support (8) and two ends and form " gantry " shape frame, the straight-bar below one end rectangularity of road wheel support (8), the other end is connected
The type hook; The lower end that road wheel is adjusted screw rod group (9) is connected with road wheel adjustment rack (22) middle part hinge, the rectangular of road wheel adjustment rack (22) upper end and road wheel support (8) below one end and the other end
Type hook hinge connects, and road wheel (10) is arranged at the bottom; Road wheel is adjusted on the screw rod group (9) the adjustment screw rod group is housed respectively; Axial traveling and caliber controlling mechanism with being connected of main body frame (1) are: the rectangular of road wheel support (8) below one end and the other end
Type hook and vertical being connected of main body frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810227777A CN101749519A (en) | 2008-12-02 | 2008-12-02 | Pipeline joint infrared heating axial walking and pipe diameter adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810227777A CN101749519A (en) | 2008-12-02 | 2008-12-02 | Pipeline joint infrared heating axial walking and pipe diameter adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN101749519A true CN101749519A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810227777A Pending CN101749519A (en) | 2008-12-02 | 2008-12-02 | Pipeline joint infrared heating axial walking and pipe diameter adjusting device |
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| CN (1) | CN101749519A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085268A (en) * | 2012-12-11 | 2013-05-08 | 北京中石伟业科技股份有限公司 | Retractor of heat shrink pipe |
| CN107131388A (en) * | 2016-02-29 | 2017-09-05 | 中国石油天然气集团公司 | Joint coating on pipeline heat shrinking sleeve support meanss |
-
2008
- 2008-12-02 CN CN200810227777A patent/CN101749519A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085268A (en) * | 2012-12-11 | 2013-05-08 | 北京中石伟业科技股份有限公司 | Retractor of heat shrink pipe |
| CN107131388A (en) * | 2016-02-29 | 2017-09-05 | 中国石油天然气集团公司 | Joint coating on pipeline heat shrinking sleeve support meanss |
| CN107131388B (en) * | 2016-02-29 | 2019-04-09 | 中国石油天然气集团公司 | Joint coating on pipeline heat shrinking sleeve support device |
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Application publication date: 20100623 |