CN201373211Y - Pipe joint infrared heating device - Google Patents
Pipe joint infrared heating device Download PDFInfo
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- CN201373211Y CN201373211Y CN200820124231U CN200820124231U CN201373211Y CN 201373211 Y CN201373211 Y CN 201373211Y CN 200820124231 U CN200820124231 U CN 200820124231U CN 200820124231 U CN200820124231 U CN 200820124231U CN 201373211 Y CN201373211 Y CN 201373211Y
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- pipeline
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Abstract
The utility model relates to a pipe joint infrared heating device which is suitable for pipe joint heating, pipe welding preheating and pipe welding post-heating treatment, belonging to the technical field of the pipe system. The pipe joint infrared heating device consists of a main body frame (1), axial moving and pipe diameter adjusting mechanisms, a heating system and a gas control system; the opening and the closing of the round or polygonal main body frame (1) are controlled by two hinges and an opening-closing mechanism (5); the upper part of the main body frame (1) is provided with a hung mechanism (4); two sides of the hung mechanism (4) are respectively provided with one axial moving and pipe diameter adjusting mechanism; the main body frame (1) is internally provided with the heating system consisting of a plurality of LPG catalytic combustion infrared heaters (6), gas guiding pipes (15) and heater spray nozzles (16); the gas control system which is connected with the gas guiding pipes (15) by pipes is arranged at the lower part of the main body frame (1); and the gas control system is communicated with the heating system by pipes and is used for controlling the gas entering the heating system.
Description
Technical field
The utility model is a kind ofly to be applicable to preheating before joint coating on pipeline heating and the pipeline welding, to weld the infrared heating device for coated joints of pipelines 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.
The model utility content
The purpose of this utility model is that the infrared heating device for coated joints of pipelines of heating, raising joint coating on pipeline efficient and quality is fixed and moved to a kind of different pipe diameter scopes, realization joint coating on pipeline of being applicable to of design.
General structure of the present utility model 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.
Circular or polygonal main body frame 1 is handled opening and closing by two hinges and an open-and-close mechanism 5, hoisting mechanism 4 is arranged at main body frame 1 top, in hoisting mechanism 4 both sides one axial traveling and caliber controlling mechanism are installed respectively, main body frame 1 inboard is equipped with the heating system that a plurality of LPG catalytic combustion infrared heaters 6, heater nozzle 16 and combustion gas air pipe 15 are formed, and the gas control system that is connected with combustion gas air pipe 15 by pipeline is installed in the bottom of main body frame 1.
Wherein:
Axial traveling and caliber controlling mechanism such as Fig. 6-shown in Figure 9, 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, adjust screw rod group 9 by the road wheel at road wheel support 8 and two ends and form " gantry " shape frame, an end rectangularity below the straight-bar of road wheel support 8, the other end " L " type hook that is connected; The lower end that road wheel is adjusted screw rod group 9 is connected with road wheel adjustment rack 22 middle part hinges, and road wheel adjustment rack 22 upper ends are connected with the rectangular of road wheel support 8 belows one end and " L " type hook hinge of the other end, and road wheel 10 is arranged at the bottom; Road wheel is adjusted on screw rod group 9 (see figure 7)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 of road wheel support 8 belows one end and " L " type hook and main body frame 1 vertical being connected of the other end; 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;
The structure of heating system such as Fig. 7-shown in Figure 9, it is made up of a plurality of heaters 6, heater nozzle 16 and combustion gas air pipe 15.Heater 6 is rectangular flat structures, on 21 li on the shell of five of outsourcings, empty one side catch net 17, catalytic bed 18, separation layer 19, mixing chamber 20 are installed from outside to inside successively; So in the uniform main body frame 1 that is installed in endless tube road 7 of heater 6; Each heater 6 has 3 heater nozzles 16 to insert mixing chamber 20; After entering main body frame 1, be divided into 2 parallel pipes with the combustion gas air pipe 15 that the gas control system suction tude connects, converge into a muffler again after 1 one weeks enclosing main body frame, return gas control system from the indirect of 2 suction tude; 3 heater nozzles 16 of each heater 6 are connected with the suction tude of combustion gas air pipe 15 respectively; Heater 6 is taked LPG catalytic combustion infrared heating mode, controls its heating-up temperature and heated perimeter by gas control system, and weather and environment are less to its influence; Here combustion gas air pipe 15 is a rubber hose; Heater nozzle 16 (see figure 4)s are that periphery is polygonal pipeline section, directly insert in the bypass mouth of pipe of combustion gas air pipe 15;
Gas control system constitutes as shown in Figure 5, and it is made up of way switch in the heater 11, heater by-pass switch 12, pressure controlling of liquefied gas table 13, heater main switch 14.Be divided into two-way after connecing the heater main switch 14 of fuel gas source, the one tunnel connects the suction tude that connects combustion gas air pipe 15 behind the heater by-pass switch 12; Another road connects the muffler that connects combustion gas air pipe 15 in pressure controlling of liquefied gas table 13 and the heater behind the way switch 11.
As seen, the utlity model has that in light weight, compact structure, volume are little, repaired mouth efficient and quality advantages of higher, 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 open-and-close mechanism enlarged view
Fig. 4 heater nozzle arrangements figure
Fig. 5 ventilatory control system structural drawing
Fig. 6 axial traveling mechanism front view
Partial enlarged drawing among Fig. 7 Fig. 6
Fig. 8 axial traveling mechanism and main body frame plan view
Fig. 9 axial traveling mechanism and main body frame side view
Figure 10 infrared heater front view
Figure 11 infrared heater side view
Figure 12 infrared heater axonometric drawing
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-catch net 18-catalytic bed
19-thermal-protective coating 20-mixing chamber
21-shell 22-road wheel adjustment rack
Embodiment
Embodiment. this example is the above joint coating on pipeline infrared heating of a Φ 1000mm experimental prototype, and its general structure 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.
Become the main body frame 1 of 12 limit shapes to handle opening and closing by two hinges and an open-and-close mechanism 5, hoisting mechanism 4 is arranged at main body frame 1 top, in hoisting mechanism 4 both sides one axial traveling and caliber controlling mechanism are installed respectively, the inboard heating system of being made up of 6,36 heater nozzles 16 of 12 LPG catalytic combustion infrared heaters and combustion gas air pipe 15 of installing of main body frame 1, the gas control system that is connected with combustion gas air pipe 15 by pipeline is installed in the bottom of main body frame 1.
Wherein:
Axial traveling and caliber controlling mechanism such as Fig. 6-shown in Figure 9, 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, adjust screw rod group 9 by the road wheel at road wheel support 8 and two ends and form " gantry " shape frame, an end rectangularity below the straight-bar of road wheel support 8, the other end " L " type hook that is connected; The lower end that road wheel is adjusted screw rod group 9 is connected with road wheel adjustment rack middle part hinge, and road wheel adjustment rack upper end is connected with the rectangular of road wheel support 8 belows one end and " L " type hook hinge of the other end, and road wheel 10 is arranged at the bottom; Road wheel is adjusted on screw rod group 9 (see figure 7)s adjustment screw rod group is housed respectively; Axial traveling and caliber controlling mechanism are seen Fig. 8 and Fig. 9 with being connected of main body frame 1; Be the rectangular of road wheel support 8 belows one end and " L " type hook and main body frame 1 vertical being connected of the other end;
Axial traveling and caliber controlling mechanism key dimension: road wheel support 8 length are 1400mm, and width is 40mm, highly are 120mm;
The structure of heating system such as Fig. 7-shown in Figure 9, it is made up of 12 heaters, 6,36 heater nozzles 16 and combustion gas air pipe 15.Heater 6 is rectangular flat structures, on 21 li on the shell of five of outsourcings, empty one side catch net 17, catalytic bed 18, separation layer 19, mixing chamber 20 are installed from outside to inside successively; Heater 6 is uniform to be installed in the main body frame 1 in endless tube road 7; Each heater 6 has 3 heater nozzles 16 to insert mixing chamber 20; After entering main body frame 1, be divided into 2 parallel pipes with the combustion gas air pipe 15 that the gas control system suction tude connects, converge into a muffler again after 1 one weeks enclosing main body frame, return gas control system from the indirect of 2 suction tude; 3 heater nozzles 16 of each heater 6 are connected with the suction tude of combustion gas air pipe 15 respectively; Heater 6 is taked LPG catalytic combustion infrared heating mode, controls its heating-up temperature and heated perimeter by gas control system, and weather and environment are less to its influence; Here combustion gas air pipe 15 is a rubber hose; Heater nozzle 16 (see figure 4)s are that periphery is polygonal pipeline section, directly insert in the bypass mouth of pipe of combustion gas air pipe 15;
Heater size is 370mm * 600mm * 150mm;
Gas control system constitutes as shown in Figure 5, and it is made up of way switch in the heater 11, heater by-pass switch 12, pressure controlling of liquefied gas table 13, heater main switch 14.Be divided into two-way after connecing the heater main switch 14 of fuel gas source, the one tunnel connects the suction tude that connects combustion gas air pipe 15 behind the heater by-pass switch 12; Another road connects the muffler that connects combustion gas air pipe 15 in pressure controlling of liquefied gas table 13 and the heater behind the way switch 11;
12 heater 6 uniform being installed in the endless tube road main body frame 1, can carry out even rapid heating to pipeline 7 interface left and right sides 700mm scopes, also can realize the centre of shrink belt (cover) and the priority of both sides are evenly heated, guarantee smooth and easy exhaust of shrink belt (cover) and evenly contraction.
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 heating equipment 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. open way switch 11 and heater by-pass switch 12 in the heater;
3. adjust pressure controlling of liquefied gas table 13 to desired value, light heater 6 with igniter;
4. 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;
5. at pipeline 7 repaired mouth places brush anti-corrosion primer;
6. after shrink belt (cover) being overlapped on request well, install support device in shrink belt (cover) below;
7. heating equipment is pushed back, make heating equipment and shrink belt (cover) central position over against;
8. open in the heater 6 way switch and light heater with igniter simultaneously;
9. when the surface temperature in the middle of the shrink belt (cover) reaches predetermined value, open heater by-pass switch 12, when heater 6 both sides are lighted, close way switch 11 in the heater, withdraw from shrink belt (cover) support device simultaneously;
10. when anticorrosion contraction bands (cover) both side surface temperature reaches predetermined value, close heater by-pass switch 12:
11. 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, easy to use, and repaired mouth efficient and quality height can be widely used in the joint coating on pipeline of different operating mode occasions and different tube diameters, have broad application prospects.
Claims (5)
1. one kind is used for preheating before joint coating on pipeline heating and the pipeline welding, welds the infrared heating device for coated joints of pipelines of after-baking, it is characterized in that it is made up of main body frame (1), axial traveling and caliber controlling mechanism, heating system and gas control system; Circular or polygonal main body frame (1) is handled opening and closing by two hinges and an open-and-close mechanism (5), hoisting mechanism (4) is arranged at main body frame (1) top, in hoisting mechanism (4) both sides one axial traveling and caliber controlling mechanism are installed respectively, main body frame (1) is inboard installs the heating system of being made up of a plurality of LPG catalytic combustion infrared heaters (6) and combustion gas air pipe (15), heater nozzle (16), and the gas control system that is connected with combustion gas air pipe (15) by pipeline 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.
2. infrared heating device for coated joints of pipelines according to claim 1, it is characterized in that described main body frame (1) constitutes circle or polygonal integral body by three sections, it is divided into upper and lower two-part, top is one section 180 ° circular arc, the bottom is for respectively being two sections circular arcs of 90 °, each is connected the two ends of top circular arc by folding hinge (2) with an end of the two sections circular arcs in bottom, and the other end of these two sections circular arcs is connected by open-and-close mechanism (5); Two-part respectively are equipped with the heater (6) that quantity equates up and down; Main body frame (1) central upper portion has hoisting mechanism (4); " ∏ " shape base (3) is arranged down at main body frame (1) bottom; The main body frame (1) in endless tube road (7) is a switching structure; Main body frame (1) adopts stainless steel material.
3. infrared heating device for coated joints of pipelines according to claim 1, it is characterized in that described axial traveling and caliber controlling mechanism be 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, adjust screw rod group (9) by the road wheel at road wheel support (8) and two ends and form " gantry " shape frame, an end rectangularity below the straight-bar of road wheel support (8), the other end " L " type hook that is connected; The lower end that road wheel is adjusted screw rod group (9) is connected with road wheel adjustment rack (22) middle part hinge, and road wheel adjustment rack (22) upper end is connected with the rectangular of road wheel support (8) below one end and " L " type hook hinge of the other end, 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 " L " type hook and vertical being connected of main body frame (1) of the other end.
4. infrared heating device for coated joints of pipelines according to claim 1 is characterized in that described heating system is made up of a plurality of heaters (6), heater nozzle (16) and combustion gas air pipe (15); Heater (6) is the rectangular flat structure, in shell (21) lining of five of outsourcings, empty one side catch net (17), catalytic bed (18), separation layer (19), mixing chamber (20) are installed from outside to inside successively; So in the uniform main body frame (1) that is installed in endless tube road (7) of heater (6); Each heater (6) has 3 heater nozzles (16) to insert mixing chamber (20); After entering main body frame (1), be divided into 2 parallel pipes with the combustion gas air pipe (15) that the gas control system suction tude connects, converge into a muffler again after (1) one week enclosing main body frame, return gas control system from the indirect of 2 suction tude; 3 heater nozzles (16) of each heater (6) are connected with the suction tude of combustion gas air pipe (15) respectively; Heater (6) is taked LPG catalytic combustion infrared heating mode; Combustion gas air pipe (15) is a rubber hose; Heater nozzle (16) directly inserts in the bypass mouth of pipe of combustion gas air pipe (15) for periphery is polygonal pipeline section.
5. infrared heating device for coated joints of pipelines according to claim 1 is characterized in that described gas control system is made up of way switch in the heater (11), heater by-pass switch (12), pressure controlling of liquefied gas table (13), heater main switch (14); Be divided into two-way after connecing the heater main switch (14) of fuel gas source, the one tunnel connects the suction tude that connects combustion gas air pipe (15) behind the heater by-pass switch (12); Another road connects the muffler that connects combustion gas air pipe (15) in pressure controlling of liquefied gas table (13) and the heater behind the way switch (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820124231U CN201373211Y (en) | 2008-12-02 | 2008-12-02 | Pipe joint infrared heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820124231U CN201373211Y (en) | 2008-12-02 | 2008-12-02 | Pipe joint infrared heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373211Y true CN201373211Y (en) | 2009-12-30 |
Family
ID=41499295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820124231U Expired - Lifetime CN201373211Y (en) | 2008-12-02 | 2008-12-02 | Pipe joint infrared heating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201373211Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749517B (en) * | 2008-12-02 | 2012-03-07 | 中国石油天然气股份有限公司 | Infrared heating device for coated joints of pipelines |
| 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 |
| CN111468952A (en) * | 2020-04-15 | 2020-07-31 | 中国石油大学(华东) | Construction device and construction method for maintenance and integrated construction of small-caliber pipeline |
-
2008
- 2008-12-02 CN CN200820124231U patent/CN201373211Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749517B (en) * | 2008-12-02 | 2012-03-07 | 中国石油天然气股份有限公司 | Infrared heating device for coated joints of pipelines |
| 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 |
| CN111468952A (en) * | 2020-04-15 | 2020-07-31 | 中国石油大学(华东) | Construction device and construction method for maintenance and integrated construction of small-caliber pipeline |
| CN111468952B (en) * | 2020-04-15 | 2021-11-02 | 中国石油大学(华东) | Construction device and construction method for maintenance and integrated construction of small-caliber pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091230 Effective date of abandoning: 20081202 |