CN203464830U - Connection structure of heat exchanger heat exchange pipe and pipe plate - Google Patents
Connection structure of heat exchanger heat exchange pipe and pipe plate Download PDFInfo
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- CN203464830U CN203464830U CN201320394997.4U CN201320394997U CN203464830U CN 203464830 U CN203464830 U CN 203464830U CN 201320394997 U CN201320394997 U CN 201320394997U CN 203464830 U CN203464830 U CN 203464830U
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Abstract
The utility model relates to a connection structure of a heat exchanger heat exchange pipe and a pipe plate. The connection structure comprises a heat exchange pipe and a pipe plate which is equipped with a pipe hole. The connection structure is characterized in that a connecting pipe is inserted into the pipe hole; two ends of the connecting pipe are exposed from side surfaces of the pipe plate; a first built-up welding layer and a second built-up welding layer are welded between one side surface of the pipe plate and the connecting pipe and between the other side surface of the pipe plate and the connecting pipe respectively; the first built-up welding layer and the second built-up welding layer are welded with the two side surfaces of the pipe plate respectively in a high-strength manner; the first built-up welding layer and the second built-up welding layer are welded with the connecting pipe in a sealed manner; the connecting pipe and the pipe hole are connected in an adhered and expanding manner; and the heat exchange pipe is welded with one end of the connecting pipe via an inner deep hole. The heat exchange pipe and the pipe plate with built-up welding layers on two sides are connected through butt joint by the connecting pipe, and the heat exchange pipe is welded with both a pipe side built-up welding layer and a shell side built-up welding layer, so that media on a pipe side and a shell side can be only contacted with the built-up welding layers of the double-built-up welding pipe plate instead of a low-alloy steel portion at the base layer of the pipe plate. Therefore, the connection structure, compared with the prior art, helps to thoroughly solve problems that the base layer of a pipe plate is liable to be corroded by a medium on a shell side.
Description
Technical field
The utility model relates to heat exchanger structure, specifically refers to the syndeton of a kind of heat exchanger heat-exchanging tube and tube sheet.
Background technology
Change furnace heater in coal gasification apparatus gasification unit, diameter DN=2000mm, tube side design pressure is 7.0MPa, design temperature is 330 ℃, shell side design pressure is 7.0MPa, design temperature is 475 ℃, tube side medium is crude synthesis gas, shell side medium is conversion gas, consider the corrosivity of medium, heat exchanger tube adopts 0Cr18Ni10Ti, if tube sheet adopts S32168, although can solve the etching problem of tube sheet, but because the diameter of equipment is larger, pressure, temperature is all higher, the allowable stress of S32168 is lower, the calculated thickness of tube sheet is far beyond the given permission thickness of standard criterion, so similar devices in the same device now having moved, tube sheet all adopts the two-sided built-up welding S32168 of 15CrMo forging, heat exchanger tube welds+pastes swollen pattern with the intensity common in employing GB151-1999 < < shell-and-tube heat exchanger > > that is connected of tube sheet.
In the coal gasification apparatus now having come into operation, in overall structure and the similar heat exchanger of operation operating mode, the tube sheet of heat exchanger tube and two-sided built-up welding adopts common intensity to weld+paste swollen structure, this structure can not fundamentally be eliminated the possibility that shell side side medium enters heat exchanger tube and tube sheet gap, easily causes the corrosion of tube sheet basic unit.Especially opening, in docking process, due to the effect of expanding with heat and contract with cold, it is large that the gap between heat exchanger tube and tube sheet can become, shell side side medium easily enters into gap, cause the corrosion of tube sheet basic unit, thereby cause the jointing place of heat exchanger tube and tube sheet to be leaked, affect the use of heat exchanger.Similar heat exchangers, in actual running, finds that there is leakage phenomenon and occurs.
Summary of the invention
Technical problem to be solved in the utility model is that the present situation for prior art provides a kind of heat exchanger tube and the good a kind of heat exchanger heat-exchanging tube of tube sheet connection sealing and the syndeton of tube sheet, thereby avoids the corrosion of tube sheet and tube sheet.
The utility model solves the problems of the technologies described above adopted technical scheme: the syndeton of this heat exchanger heat-exchanging tube and tube sheet, comprise heat exchanger tube and tube sheet, described heat exchanger tube is provided with pore, it is characterized in that being inserted with tube connector in described pore, and the two ends of this tube connector expose to the two sides of described tube sheet, on the two sides of described tube sheet and between described tube connector, be welded with respectively the first overlay cladding and the second overlay cladding, first, two sides of the second overlay cladding and described tube sheet are intensity weldering, first, between the second overlay cladding and described tube connector, it is seal welding, between described tube connector and described pore, for pasting expanded joint, connect, one end that described heat exchanger tube and described tube connector connect connects by Deep Hole Welding.
Preferably, the many 15～25mm of the thickness of tube sheet described in the Length Ratio of described tube connector.
Compared with prior art, the utility model heat exchanger tube adopts the docking of tube connector joint with being connected of two-sided built-up welding tube sheet, heat exchange tube and tube, shell side side overlay cladding all adopt and are welded to connect, make the medium of tube side and shell side can only touch the overlay cladding of two-sided built-up welding tube sheet, cannot touch the low-alloy steel part of tube sheet basic unit, thoroughly solve tube sheet basic unit by the problem of shell side dielectric corrosion.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the utility model embodiment decomposition texture.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figure 1, the syndeton of this heat exchanger heat-exchanging tube and tube sheet comprises heat exchanger tube 1, tube sheet 2 and tube connector 3.
Wherein, tube sheet 2 is provided with pore, and tube connector 3 is plugged in this pore, two sides of the tube sheet that the two ends of tube connector 3 expose to.In the present embodiment, the many 20mm of thickness of the Length Ratio tube sheet 2 of tube connector 3, tube connector 3 exposes to the length of the tube side side of tube sheet and is a bit larger tham the length that exposes to tube sheet another side.
On the two sides of tube sheet and between tube connector, be welded with respectively the first overlay cladding 5 and the second overlay cladding 4.It between two of first, second overlay cladding and tube sheet sides, is wherein intensity weldering; Between first, second overlay cladding and tube connector 3, be seal weld; Between tube connector 3 and pore, for pasting expanded joint, connect.
Heat exchanger tube 1 is connected by inner side Deep Hole Welding with one end that tube connector exposes to the tube side side of tube sheet 2.
In this heat exchanger, between tube sheet and heat exchanger tube, pipe, the shell side built-up welding side by one section of tube connector and double-deck built-up welding tube sheet all adopts that intensity is soldered to be connect, and then adopt the method for inner side Deep Hole Welding that heat exchanger tube is connected with tube connector, effectively solved the etching problem of shell side medium osmosis to tube sheet basic unit.
Claims (2)
1. the syndeton of a heat exchanger heat-exchanging tube and tube sheet, comprise heat exchanger tube and tube sheet, described tube sheet is provided with pore, it is characterized in that being inserted with tube connector in described pore, and the two ends of this tube connector expose to the side of described tube sheet, on the two sides of described tube sheet and between described tube connector, be welded with respectively the first overlay cladding and the second overlay cladding, two sides of first, second overlay cladding and described tube sheet are intensity weldering, between first, second overlay cladding and described tube connector, are seal welding; Between described tube connector and described pore, for pasting expanded joint, connect; One end of described heat exchanger tube and described tube connector connects by inner side Deep Hole Welding.
2. the syndeton of heat exchanger heat-exchanging tube according to claim 1 and tube sheet, is characterized in that the many 15～25mm of thickness of tube sheet described in the Length Ratio of described tube connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320394997.4U CN203464830U (en) | 2013-07-03 | 2013-07-03 | Connection structure of heat exchanger heat exchange pipe and pipe plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320394997.4U CN203464830U (en) | 2013-07-03 | 2013-07-03 | Connection structure of heat exchanger heat exchange pipe and pipe plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203464830U true CN203464830U (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320394997.4U Expired - Lifetime CN203464830U (en) | 2013-07-03 | 2013-07-03 | Connection structure of heat exchanger heat exchange pipe and pipe plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN203464830U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525421A (en) * | 2017-10-23 | 2017-12-29 | 张化机（苏州）重装有限公司 | A kind of heat exchanger for improving service life |
| CN110382992A (en) * | 2017-03-14 | 2019-10-25 | 阿法拉伐奥米有限公司 | Protective device for shell-tube type equipment |
| CN111390339A (en) * | 2020-04-04 | 2020-07-10 | 天津津滨石化设备有限公司 | Welding process of high-purity ferrite stainless steel heat exchanger |
| CN115072661A (en) * | 2022-05-31 | 2022-09-20 | 中国石油化工股份有限公司 | Method for preventing converted gas steam converter from dew point corrosion and steam converter |
-
2013
- 2013-07-03 CN CN201320394997.4U patent/CN203464830U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110382992A (en) * | 2017-03-14 | 2019-10-25 | 阿法拉伐奥米有限公司 | Protective device for shell-tube type equipment |
| CN110382992B (en) * | 2017-03-14 | 2020-09-29 | 阿法拉伐奥米有限公司 | Protective device for a shell-and-tube installation |
| US11143465B2 (en) | 2017-03-14 | 2021-10-12 | Alfa Laval Olmi S.P.A | Protection device for a shell-and-tube equipment |
| CN107525421A (en) * | 2017-10-23 | 2017-12-29 | 张化机（苏州）重装有限公司 | A kind of heat exchanger for improving service life |
| CN107525421B (en) * | 2017-10-23 | 2024-02-06 | 张化机（苏州）重装有限公司 | Heat exchanger capable of prolonging service life |
| CN111390339A (en) * | 2020-04-04 | 2020-07-10 | 天津津滨石化设备有限公司 | Welding process of high-purity ferrite stainless steel heat exchanger |
| CN111390339B (en) * | 2020-04-04 | 2021-10-29 | 天津津滨石化设备有限公司 | Welding process of high-purity ferrite stainless steel heat exchanger |
| CN115072661A (en) * | 2022-05-31 | 2022-09-20 | 中国石油化工股份有限公司 | Method for preventing converted gas steam converter from dew point corrosion and steam converter |
| CN115072661B (en) * | 2022-05-31 | 2023-08-08 | 中国石油化工股份有限公司 | Method for preventing dew point corrosion of conversion gas steam converter and steam converter |
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| GR01 | Patent grant | ||
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Granted publication date: 20140305 |
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| CX01 | Expiry of patent term |