CN203045228U - Tool used for welding heat exchange pipe and tube plate in waste heat boiler - Google Patents
Tool used for welding heat exchange pipe and tube plate in waste heat boiler Download PDFInfo
- Publication number
- CN203045228U CN203045228U CN 201320025538 CN201320025538U CN203045228U CN 203045228 U CN203045228 U CN 203045228U CN 201320025538 CN201320025538 CN 201320025538 CN 201320025538 U CN201320025538 U CN 201320025538U CN 203045228 U CN203045228 U CN 203045228U
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- locating
- locating piece
- tube
- exchange pipe
- heat exchanger
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Abstract
The utility model discloses a tool used for welding a heat exchange pipe and a tube plate in a waste heat boiler. The tool can carry out centering on the heat exchange pipe simply and quickly. The tool comprises a locating rod, two ends of the locating rod are respectively provided with a locating device, each locating device comprises at least two locating blocks surrounding the outer wall of the locating rod, a stop plate is arranged on one sides of the locating blocks, the stop plate is sleeved on the locating rod and closer to the end portion of the locating rod than the locating blocks, a stop nut is arranged on the other side of the stop plate, and the stop nut is in threaded connection on the locating rod. The tool used for welding the heat exchange pipe and the tube plate in the waste heat boiler has the advantages that in the process of use, the locating blocks are plugged between the heat exchange pipe and the tube plate, the distance between the locating blocks is adjusted so that a tube hole center of the tube plate is placed on the central axial line of the heat exchange pipe, then the locating blocks can be located through the stop plate, and therefore operation is convenient and quick.
Description
Technical field
The utility model 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 the coal gasification mode is utilized the energy efficiency height of coal.By coal gasification, change the solid coal raw material gas raw material of cleaning into, reprocessing becomes oil, chemical products or electricity, and advanced Coal Gasification Technology is one of key technology of coal high-efficiency clean utilization.After coal utilizes through the front device high-temperature gasification, transform flue gas in a large number and enter waste heat boiler and carry out recycling, enter rearmounted device at last and purify.
Waste heat boiler also is waste heat boiler, and the high-temp waste gas that utilizes various devices to produce exactly adds hot water, produces steam or produces hot water, and the steam that recycling produces or hot water reach and can be used for generating, also can be used to purposes such as heating.Waste heat boiler belongs to the energy-conserving and environment-protective project, and it has reduced the discharge capacity of refuse, has alleviated environmental pollution greatly, simultaneously heat has been carried out certain recovery.
In the coal gasification course of middle compression technology, the flue-gas temperature of coming out from coal gasifier reaches 950 ℃～1050 ℃, contains a large amount of heat energy in this part flue gas, must utilize waste heat boiler to recycle heat.Owing in flue gas, contain a large amount of moisture content, also there are acidic materials such as some sulfur dioxide, hydrogen cyanide, under low temperature (flue gas dew point temperature), easily metal is produced cold end corrosion, the dust that contains a large amount of fine-powdered simultaneously in the flue gas again, because electrostatic interaction, the as easy as rolling off a log metal surface that is attached to is not easy cleaning, influences the operation of boiler and even complete equipment.The distinctive technology of coal gasification has determined the operating mode of the pressure of flue gas, has determined waste heat boiler and other conventional boilers that very big difference is arranged, and the flue gas pressures of general boiler is pressure-fired or little 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 to absorb under mal-condition like this energy in the high-temperature flue gas again, reduces the 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 tube evaporimeter and vertical water pipe superheater.Utilize the characteristics of fire-tube type evaporimeter thermal capacity, namely the volume of the water outside the heat exchanger tube is big in the evaporimeter, so its cooling is slow, so just can keep the temperature of tube wall when blowing out in the long period, avoids the cold end corrosion of flue gas.Adopt dual pressure system, the energy that absorbs to greatest extent in the flue gas is used.All evaporimeters all adopt fire-tube type, and the housing employing is vertical, and water circulating speed is fast, and rate of heat transfer is higher, and the vapor space is also bigger.Like this as long as suitably control the flow velocity of flue gas, just be not easy dust stratification on the heat exchanger tube inwall, and all dust all can drop to the bottom of housing with air-flow, and owing to flue gas parallel baffled in heat exchanger tube, the wear problem of heat exchanger tube inwall also obtains very big improvement simultaneously.
Wherein since tube sheet and heat exchanger tube be welded as complete penetraction and fusion in welding and can not expanded joint, so in heat exchanger tube location and installation process, bring following problem:
1, is difficult to guarantee that heat exchanger tube is positioned at the pore center in the heat exchanger tube assembling process.
2, difficulty is bigger in the thinner welding process of heat exchanger tube tube wall, can't guarantee that pipe is had defectives such as bubble by burn-through and weld seam inside in the welding process.
3, heat exchanger tube One's name is legion, each heat exchanger tube needs the accent center: labour intensity is big, workload is big, expend the plenty of time, transfer the center dimensional accuracy to be difficult to guarantee.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of and can exchange the frock that is used for waste heat boiler heat exchanger tube and tube sheet welding that heat pipe is transferred the center simply, efficiently.
For solving the problems of the technologies described above, the technical solution adopted in the utility model 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 the backstay outer wall, one side of locating piece is provided with check plate, check plate is enclosed within on the backstay and than the end of the more close backstay of locating piece, the opposite side of check plate is provided with the retainer nut, on the backstay that the retainer nut is threaded.
The cross section of described locating piece is trapezoidal, and locating piece stretches into that end rounding in the tube sheet.
The outside of described locating piece is respectively arranged with the location gusset, and the location gusset is clamped between check plate and the tube sheet in use.
The beneficial effects of the utility model are: in use, locating piece is filled in heat exchanger tube with between the tube sheet, regulate the distance between the locating piece, make the pore of tube sheet be centered close on the central axis of heat exchanger tube, with check plate locating piece is positioned then and get final product, easy to operate, quick.
Description of drawings
Fig. 1 is the front view that the utility model is used for the frock of waste heat boiler heat exchanger tube and tube sheet welding.
Among the figure: 1, backstay, 2, locating piece, 3, check plate, 4, the location gusset, 5, packing ring, 6, the retainer nut, 7, tube sheet, 8, heat exchanger tube.
The specific embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
As shown in Figure 1, the frock that is used for the welding of waste heat boiler heat exchanger tube and tube sheet, 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 generally is set in three, not only saves material but also can satisfy positioning requirements.One side of locating piece 2 is provided with check plate 3, and check plate 3 is enclosed within on the backstay 1 and than the end of locating piece 2 more close backstays 1, 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 subjected 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 guarantee the correct position between locating piece 2 and the 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 the tube sheet 7 in use.Locating piece 2 is filled in the pore of tube sheet 7 for convenience, and the cross section of described locating piece 2 is trapezoidal, and locating piece 2 stretches into that end rounding in the tube sheet 7.It is the effect that locating piece 2 plays a voussoir.
The course of work of the present utility model is: be placed on after frock making finishes on the level ground, the heat exchanger tube of fire tube evaporimeter is all put on, the tool locating order is as follows: backstay 1 is inserted in the heat exchanger tube 8, guarantee that the extension elongation at two ends equates.Locating piece 2 is inserted gap between two ends heat exchanger tube 8 and tube sheet 7 pores respectively.Because pore is smaller, the heat exchanger tube behind the location of spot welding for convenience, the distance between the locating piece 2, the angle between the locating piece 2 are 90 °; Assembling back 3 locating pieces 2 should be concordant.Check plate 3 should be contained in above the locating piece 2.Location gusset 4 should be close to locating piece 2 and be positioned at locating piece 2 centre positions; Assemble packing ring 5 and retainer nut 6 at last.Whether the back, location is positioned at the management and control center with the apparatus measures heat exchanger tube.Carry out carrying out between heat exchanger tube and pore spot welding with GTAW after the assay was approved, spot welding should intersect to be carried out.The point postwelding detects qualified back and removes frock, welds with GTAW.After adopting above-mentioned tool locating heat exchanger tube and tube sheet, method of operating is simple, quick, and the setting accuracy height, effectively raises operating efficiency.
Claims (3)
1. the frock that is used for the welding of waste heat boiler heat exchanger tube and tube sheet, 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 the backstay outer wall, one side of locating piece is provided with check plate, check plate is enclosed within on the backstay and than the end of the more close backstay of locating piece, the opposite side of check plate is provided with the retainer nut, on the backstay that the retainer nut is threaded.
2. the frock for the welding of waste heat boiler heat exchanger tube and tube sheet according to claim 1, it is characterized in that: the cross section of described locating piece is trapezoidal, and locating piece stretches into that end rounding in the tube sheet.
3. the frock for the welding of waste heat boiler heat exchanger tube and tube sheet according to claim 1 and 2, it is characterized in that: the outside of described locating piece is respectively arranged with the location gusset, and the location gusset is clamped between check plate and the tube sheet in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025538 CN203045228U (en) | 2013-01-17 | 2013-01-17 | Tool used for welding heat exchange pipe and tube plate in waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025538 CN203045228U (en) | 2013-01-17 | 2013-01-17 | Tool used for welding heat exchange pipe and tube plate in waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203045228U true CN203045228U (en) | 2013-07-10 |
Family
ID=48728224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320025538 Withdrawn - After Issue CN203045228U (en) | 2013-01-17 | 2013-01-17 | Tool used for welding heat exchange pipe and tube plate in waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203045228U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056580A (en) * | 2013-01-17 | 2013-04-24 | 苏州海陆重工股份有限公司 | Tool for welding of heat exchanging tube and tube plate in waste heat boiler |
| CN106813014A (en) * | 2017-03-28 | 2017-06-09 | 苏州道众机械制造有限公司 | A kind of anti-corrosion reinforces tube sheet |
-
2013
- 2013-01-17 CN CN 201320025538 patent/CN203045228U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056580A (en) * | 2013-01-17 | 2013-04-24 | 苏州海陆重工股份有限公司 | Tool for welding of heat exchanging tube and tube plate in waste heat boiler |
| CN103056580B (en) * | 2013-01-17 | 2014-11-05 | 苏州海陆重工股份有限公司 | Tool for welding of heat exchanging tube and tube plate in waste heat boiler |
| CN106813014A (en) * | 2017-03-28 | 2017-06-09 | 苏州道众机械制造有限公司 | A kind of anti-corrosion reinforces tube sheet |
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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: 20130710 Effective date of abandoning: 20141105 |
|
| RGAV | Abandon patent right to avoid regrant |