CN103056580B - Tool for welding of heat exchanging tube and tube plate in waste heat boiler - Google Patents
Tool for welding of heat exchanging tube and tube plate in waste heat boiler Download PDFInfo
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- CN103056580B CN103056580B CN201310017432.9A CN201310017432A CN103056580B CN 103056580 B CN103056580 B CN 103056580B CN 201310017432 A CN201310017432 A CN 201310017432A CN 103056580 B CN103056580 B CN 103056580B
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Abstract
The invention discloses a tool for welding of a heat exchanging tube and a tube plate in a waste heat boiler. The tool is capable of centering the heat exchange tube simply and fast and comprises a positioning rod. Two ends of the positioning rod are provided with positioning devices respectively. Each positioning device comprises at least tow positioning blocks around the outer wall of the positioning rod. A stop plate is disposed on one side of each positioning block, sleeved on the positioning rod, and closer to the end of the positioning rod than each positioning block. The other side of each stop plate is provided with a stop nut which is connected to the positioning rod in a threaded manner. During use, the positioning blocks are inserted between the heat exchange tube and the tube plate, the distance among the positioning blocks are adjusted to allow tube hole center of the tube plate to be located on a central axis of the heat exchange tube, and the stop plates are used for positioning the positioning blocks. The tool is quite convenient and fast to operate.
Description
Technical field
The present invention relates to a kind of frock for waste heat boiler heat exchanger tube and Tube-sheet Welding.
Background technology
Coal gasification is a kind of coal utilization technology of cleaning, can avoid the directly pollution of burning of coal, and coal gasification mode utilizes the energy efficiency of coal high.By coal gasification, change solid coal raw material into clean gas raw material, reprocessing becomes oil, chemical products or electricity, and advanced Coal Gasification Technology is one of key technology of coal high-efficiency clean utilization.Coal, after front device high-temperature gasification utilizes, transforms in a large number flue gas and enters waste heat boiler and recycle, and finally enters device rear and purifies.
Waste heat boiler is also waste heat boiler, and the high-temp waste gas that utilizes exactly various devices to produce carrys out heating water, produces steam or produces hot water, and steam or hot water that recycling produces, reach and can be used for generating electricity, and also can be used to the objects such as heating.Waste heat boiler belongs to energy-conserving and environment-protective project, and it has reduced the discharge capacity of refuse, has greatly alleviated environmental pollution, heat has been carried out to certain recovery simultaneously.
In the coal gasification course of middle compression technology, reach 950 DEG C～1050 DEG C from coal gasifier flue-gas temperature out, in this part flue gas, contain a large amount of heat energy, must utilize waste heat boiler to recycle heat.Owing to containing a large amount of moisture content in flue gas, also there are the acidic materials such as some sulfur dioxide, hydrogen cyanide, under low temperature (flue gas dew point temperature), easily metal is produced to cold end corrosion, in flue gas, contain again the dust of a large amount of fine-powdered simultaneously, due to electrostatic interaction, the as easy as rolling off a log metal surface that is attached to is not easy cleaning, affects the operation of boiler and even complete equipment.The distinctive technique of coal gasification has determined the operating mode of the pressure of flue gas, has determined that waste heat boiler and other conventional boilers make a big difference, and the flue gas pressures of general boiler is pressure-fired or micro-negative pressure.Therefore, the design of waste heat boiler should be considered cold end corrosion and prevent dust stratification and the pressure of flue gas, guarantees again, so absorbing the energy in high-temperature flue gas under mal-condition, to reduce cigarette temperature.
This waste heat boiler belongs to the heat exchanger of a kind of middle temperature, middle pressure.Waste heat boiler is made up of import smoke box, vertical fire-pipe evaporimeter and vertical water-tube superheater.Utilize the feature of fire-tube type evaporimeter thermal capacity, in evaporimeter, the volume of the water outside heat exchanger tube is large, and therefore its cooling is slow, so just can in the time of blowing out, in the long period, keep the temperature of tube wall, avoids the cold end corrosion of flue gas.Adopt dual pressure system, the energy absorbing to greatest extent in flue gas is used.All evaporimeters all adopt fire-tube type, and housing employing is vertical, and water circulating speed is fast, and rate of heat transfer is higher, and the vapor space is also larger.Like this as long as suitably control the flow velocity of flue gas, just be not easy dust stratification on heat exchanger tube inwall, and all dust all can drop to air-flow the bottom of housing, simultaneously due to flue gas parallel baffled in heat exchanger tube, the wear problem of heat exchanger tube inwall is also very significantly improved.
Wherein due to tube sheet and heat exchanger tube be welded as complete penetraction and fusion in welding and can not expanded joint, so bring following problem in heat exchanger tube location and installation process:
1, in heat exchanger tube assembling process, be difficult to ensure that heat exchanger tube is positioned at pore center.
2, in the thinner welding process of heat exchanger tube tube wall, difficulty is larger, cannot ensure that in welding process, pipe is had the defects such as bubble by burn-through and weld seam inside.
3, heat exchanger tube One's name is legion, each heat exchanger tube needs tune center: labour intensity is large, workload is large, expend the plenty of time, adjust center dimensional accuracy to be difficult to ensure.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and can exchange simply, efficiently heat pipe and adjust the frock for waste heat boiler heat exchanger tube and Tube-sheet Welding at center.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of frock for waste heat boiler heat exchanger tube and Tube-sheet Welding, comprise backstay, the two ends of backstay are respectively arranged with positioner, positioner comprises at least two locating pieces that are looped around on backstay outer wall, one side of locating piece is provided with check plate, check plate is enclosed within on backstay and than the end of the more close backstay of locating piece, the opposite side of check plate is provided with retainer nut, on the backstay that retainer nut is threaded.
The cross section of described locating piece is trapezoidal, and locating piece stretches into that end rounding in tube sheet.
The outside of described locating piece is respectively arranged with location gusset, and location gusset is clamped between check plate and tube sheet in use.
The invention has the beneficial effects as follows: in use, locating piece is filled in to heat exchanger tube with between tube sheet, regulate the distance between locating piece, the pore of tube sheet is centered close on the central axis of heat exchanger tube, then with check plate, locating piece is positioned, easy to operate, quick.
Brief description of the drawings
Fig. 1 is the front view of the present invention for the frock of waste heat boiler heat exchanger tube and Tube-sheet Welding.
In figure: 1, backstay, 2, locating piece, 3, check plate, 4, location gusset, 5, packing ring, 6, retainer nut, 7, tube sheet, 8, heat exchanger tube.
Detailed description of the invention
Below in conjunction with accompanying drawing, describe specific embodiment of the invention scheme in detail.
As shown in Figure 1, for the frock of waste heat boiler heat exchanger tube and Tube-sheet Welding, comprise backstay 1, the two ends of backstay 1 are respectively arranged with positioner, positioner comprises at least two locating pieces 2 that are looped around on backstay 1 outer wall, in actual production, the quantity of locating piece 2 is generally set in three, not only saves material but also can meet positioning requirements.One side of locating piece 2 is provided with check plate 3, and check plate 3 is enclosed within on backstay 1 and than the end of the more close backstay 1 of locating piece 2, and the opposite side of check plate 3 is provided with retainer nut 6, on the backstay 1 that retainer nut 6 is threaded.In actual production, be subject to direct extruding of the retainer nut 6 and wear and tear for fear of check plate 3, can between retainer nut 6 and check plate 3, packing ring 5 be set.In order to ensure the correct position between locating piece 2 and tube sheet 7, the outside of described locating piece 2 is respectively arranged with location gusset 4, and location gusset 4 is clamped between check plate 3 and tube sheet 7 in use.In order to facilitate locating piece 2 to fill in the pore of tube sheet 7, the cross section of described locating piece 2 is trapezoidal, and locating piece 2 stretches into that end rounding in tube sheet 7.It is the effect that locating piece 2 plays a voussoir.
The course of work of the present invention is: after frock making, be placed on level ground, the heat exchanger tube of fire tube evaporimeter is all put on, tool locating order is as follows: backstay 1 is inserted in heat exchanger tube 8, ensure that the extension elongation at two ends equates.Locating piece 1 is inserted respectively to the gap between two ends heat exchanger tube 8 and tube sheet 7 pores.Because pore is smaller, in order to facilitate the heat exchanger tube behind spot welding location, the distance between locating piece 2, the angle between locating piece 2 is 90 °; Assembling rear 3 locating pieces 2 should be concordant.Check plate 3 should be contained in above locating piece 2.Location gusset 4 should be close to locating piece 2 and be positioned at locating piece 2 centre positions; Finally assemble packing ring 5 and retainer nut 6.Behind location, whether be positioned at management and control center with apparatus measures heat exchanger tube.Carry out carrying out spot welding between heat exchanger tube and pore with GTAW after the assay was approved, spot welding should intersect to be carried out.Point postwelding detects qualified rear dismounting frock, welds with GTAW.Adopt after above-mentioned tool locating heat exchanger tube and tube sheet, method of operating is simple, quick, and setting accuracy is high, effectively raises operating efficiency.
Claims (3)
1. for the frock of waste heat boiler heat exchanger tube and Tube-sheet Welding, it is characterized in that: comprise backstay, the two ends of backstay are respectively arranged with positioner, positioner comprises at least two locating pieces that are looped around on backstay outer wall, one side of locating piece is provided with check plate, check plate is enclosed within on backstay and than the end of the more close backstay of locating piece, and the opposite side of check plate is provided with retainer nut, and retainer nut is threaded on backstay.
2. the frock for waste heat boiler heat exchanger tube and Tube-sheet Welding according to claim 1, is characterized in that: the cross section of described locating piece is trapezoidal, and locating piece stretches into that end rounding in tube sheet.
3. the frock for waste heat boiler heat exchanger tube and Tube-sheet Welding according to claim 1 and 2, is characterized in that: the outside of described locating piece is respectively arranged with location gusset, and location gusset is clamped between check plate and tube sheet in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310017432.9A CN103056580B (en) | 2013-01-17 | 2013-01-17 | Tool for welding of heat exchanging tube and tube plate in waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310017432.9A CN103056580B (en) | 2013-01-17 | 2013-01-17 | Tool for welding of heat exchanging tube and tube plate in waste heat boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103056580A CN103056580A (en) | 2013-04-24 |
| CN103056580B true CN103056580B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310017432.9A Active CN103056580B (en) | 2013-01-17 | 2013-01-17 | Tool for welding of heat exchanging tube and tube plate in waste heat boiler |
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| Country | Link |
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| CN (1) | CN103056580B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202963B (en) * | 2015-09-29 | 2017-12-08 | 茂名重力石化装备股份公司 | A kind of non-solder forced sealing structure of exchanger tubes and tubesheets |
| CN108907409B (en) * | 2018-08-08 | 2023-08-18 | 电子科技大学中山学院 | Using method of visual positioning control structure of long tube full-automatic intelligent welding equipment |
| CN112108788A (en) * | 2020-10-29 | 2020-12-22 | 青岛中科国晟动力科技有限公司 | Auxiliary tool for sleeve welding and welding method |
| CN112157393B (en) * | 2020-11-10 | 2022-08-02 | 吕新青 | Welding tool and manufacturing process of well type electric furnace |
| CN113996964B (en) * | 2021-12-30 | 2022-03-18 | 常州新海飞金属制品有限公司 | Tube plate welding method, tube body and tube plate connecting method and heat exchanger |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181329A (en) * | 1979-02-02 | 1980-01-01 | Gordon H. Cork | Releasable tube coupling |
| NL8300396A (en) * | 1983-02-03 | 1984-09-03 | Lummus Nederland B V | Heat-exchanger with pipe bundle - has metal diaphragm ring on pipe plate, thrust by ring against packing |
| CN1357429A (en) * | 2000-12-08 | 2002-07-10 | 白天海 | Flange positioner |
| CN1733418A (en) * | 2000-12-08 | 2006-02-15 | 中国建筑第八工程局工业设备安装公司一公司 | Flange positioner |
| CN101569974A (en) * | 2008-05-04 | 2009-11-04 | 中建工业设备安装有限公司 | Flange positioner rapidly regulating locking device |
| CN201645099U (en) * | 2010-04-26 | 2010-11-24 | 徐州三原称重技术有限公司 | Steel tube flange welding flock |
| CN203045228U (en) * | 2013-01-17 | 2013-07-10 | 苏州海陆重工股份有限公司 | Tool used for welding heat exchange pipe and tube plate in waste heat boiler |
-
2013
- 2013-01-17 CN CN201310017432.9A patent/CN103056580B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181329A (en) * | 1979-02-02 | 1980-01-01 | Gordon H. Cork | Releasable tube coupling |
| NL8300396A (en) * | 1983-02-03 | 1984-09-03 | Lummus Nederland B V | Heat-exchanger with pipe bundle - has metal diaphragm ring on pipe plate, thrust by ring against packing |
| CN1357429A (en) * | 2000-12-08 | 2002-07-10 | 白天海 | Flange positioner |
| CN1733418A (en) * | 2000-12-08 | 2006-02-15 | 中国建筑第八工程局工业设备安装公司一公司 | Flange positioner |
| CN101569974A (en) * | 2008-05-04 | 2009-11-04 | 中建工业设备安装有限公司 | Flange positioner rapidly regulating locking device |
| CN201645099U (en) * | 2010-04-26 | 2010-11-24 | 徐州三原称重技术有限公司 | Steel tube flange welding flock |
| CN203045228U (en) * | 2013-01-17 | 2013-07-10 | 苏州海陆重工股份有限公司 | Tool used for welding heat exchange pipe and tube plate in waste heat boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103056580A (en) | 2013-04-24 |
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Effective date of registration: 20160603 Address after: Hangzhou City, Zhejiang province 310022 City Shi Xiang Road No. 86-7 Xinhua business building three four floor Patentee after: Hangzhou Hailu Heavy Industry Co., Ltd. Address before: The people of West yangshe Suzhou city 215600 Jiangsu city of Zhangjiagang province No. 1 Suzhou Hailu heavy industry Limited by Share Ltd Suzhou Hailu heavy industry Limited by Share Ltd Patentee before: Suzhou Hailu Heavy Industry Co., Ltd. |