KR200333602Y1 - Fixed structure of tube and tube seat for heat exchanger - Google Patents
Fixed structure of tube and tube seat for heat exchanger Download PDFInfo
- Publication number
- KR200333602Y1 KR200333602Y1 KR20-2003-0025390U KR20030025390U KR200333602Y1 KR 200333602 Y1 KR200333602 Y1 KR 200333602Y1 KR 20030025390 U KR20030025390 U KR 20030025390U KR 200333602 Y1 KR200333602 Y1 KR 200333602Y1
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- South Korea
- Prior art keywords
- tube
- heat exchanger
- tube sheet
- sheet
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000003466 welding Methods 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims 1
- 230000008646 thermal stress Effects 0.000 abstract description 13
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
- F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
본 고안은 열교환기의 셀부에 장착되어 열교환에 의해 열응력이 반복적으로 작용되는 다수의 튜브들을 튜브시트에 고정함에 있어서의 튜브의 끝단이 용접에 의하여 고정되는 튜브시트에 핫댐(Heat Dam)을 튜브에 열응력이 작용하더라도 이를 흡수하여 크랙(Crack) 등의 결함 발생을 최소화할 수 있는 열교환기의 튜브와 튜브시트의 고정구조에 관한 것으로, 열교환기(10)내의 셀부(20)내에 튜브(100)를 튜브시트(200)의 튜브고정구멍(210)에 고정함에 있어서, 상기 튜브시트(200)의 튜브고정구멍(210)과 용접간격(230)을 두고 핫댐(220)을 형성하여, 상기 튜브(100)의 끝단면(110)과 상기 튜브시트(200)의 용접간격(230)에 용접이 행하여져 고정되도록 되어 있고, 상기 핫댐(220)은, 튜브시트(200)의 둘레면에 절삭 성형된 깊이있는 요홈이며, 또한 상기 용접간격(230)은, 상기 튜브(100)의 두께 보다 큰 칫수의 간격이다.The present invention is installed in the cell portion of the heat exchanger in the tube sheet in which the end of the tube is fixed by welding in the tube sheet to fix a plurality of tubes that the thermal stress is repeatedly acted by the heat exchange tube to the tube (Heat Dam) This is related to the fixing structure of the tube and the tube sheet of the heat exchanger that can absorb the thermal stress even if the thermal stress acts to minimize the occurrence of cracks, etc., the tube 100 in the cell portion 20 of the heat exchanger 10 ) In fixing the tube fixing hole 210 of the tube sheet 200, the hot dam 220 is formed with the tube fixing hole 210 and the welding interval 230 of the tube sheet 200 to form the tube. The end surface 110 of the 100 and the welding interval 230 of the tube sheet 200 is welded to be fixed, and the hot dam 220 is cut formed on the peripheral surface of the tube sheet 200 Deep groove, and the welding interval 230, the tu A spacing dimension greater than the thickness of 100.
Description
본 고안은 열교환기내에 장착되는 튜브를 튜브시트에 고정하는 구조에 관한 것으로, 더욱 상세하게는 열교환기의 셀부에 장착되어 열교환에 의해 열응력이 반복적으로 작용되는 다수의 튜브들을 튜브시트에 고정함에 있어서의 튜브의 끝단이 용접에 의하여 고정되는 튜브시트에 핫댐(Heat Dam)을 튜브에 열응력이 작용하더라도 이를 흡수하여 크랙(Crack) 등의 결함 발생을 최소화할 수 있는 열교환기의 튜브와 튜브시트의 고정구조에 관한 것이다.The present invention relates to a structure for fixing a tube mounted in a heat exchanger to a tube sheet, and more particularly, to fix a plurality of tubes mounted on a cell portion of a heat exchanger to which a thermal stress is repeatedly applied to the tube sheet. The tube and tube sheet of the heat exchanger can minimize the occurrence of defects such as cracks by absorbing the hot dam to the tube sheet where the end of the tube is fixed by welding, even if the thermal stress acts on the tube. It relates to a fixed structure of.
일반적으로, 화공유체를 저장하는 탱크 또는 폐수로부터 폐열을 회수하는 열교환기는 본체의 모체를 카본스틸재 또는 스텐레스재로 형성하며, 내면은 티타늄 및 지르코늄 등의 내부식성의 클래드재를 압착 성형되도록 하여 탱크내에 유출입되는 유체에 의한 부식을 방지하도록 하고 있다.In general, a heat exchanger for recovering waste heat from a tank or a waste water storage tank is formed of carbon steel or stainless steel, and an inner surface of the tank is pressed against a corrosion-resistant cladding material such as titanium and zirconium. Corrosion by the fluid flowing in and out is prevented.
또한, 열교환기의 튜브는 부식 등을 방지하기 위하여 내면은 티타늄 및 지르코늄 등의 내부식성재를 사용하고 있다.In addition, the tube of the heat exchanger uses corrosion resistant materials such as titanium and zirconium to prevent corrosion.
위와 같이 탱크의 구조를 2중으로 하지 않고 하나의 내부식성부재로 형성할 수도 있으나, 상기 티타늄 및 지르코늄 등의 부재의 가격이 고가일 뿐만 아니라, 기계가공처리가 난해하며 가공비용이 고가인 관계로 본체의 모체를 카본스틸 또는 스텐레스로 하고 내부식성부재를 클래드재로 사용되고 있다.It is possible to form a single corrosion resistant member without double the structure of the tank as described above, but the main body of the titanium and zirconium, such as the price is not only expensive, but also difficult to machine processing and the processing cost is high Is made of carbon steel or stainless steel, and the corrosion resistant member is used as clad material.
특히, 열교환기의 셀부에 장착되는 튜브가 튜브시트에 용접되어 고정되는 데, 도 2 및 도 3에 나타낸 바와 같이 튜브시트(200)에 튜브(100)의 끝단을 용접을 위하여 컷(Cut)부(201)을 절결 형성하며, 이 컷부(201)는 튜브의 끝단과의 용접단면적을 높이기 위하여 대략 "ㄴ"자 형상으로 절결하여 형성하고, 또한 튜브를 도 2와 같이 컷부(201)쪽으로 위치시킨 후, 도 3 과 같이 튜브(100)와 튜브시트(200)에 용접을 행하여 튜브의 끝단이 튜브시트(200)에 고정되도록 하고 있다.In particular, the tube mounted in the cell portion of the heat exchanger is fixed to the tube sheet by welding, as shown in Figures 2 and 3 cut (Cut) for welding the end of the tube 100 to the tube sheet 200 The cut portion 201 is formed by cutting the cut portion 201 into a roughly “b” shape in order to increase the weld end area with the end of the tube, and the tube is placed toward the cut portion 201 as shown in FIG. 2. Thereafter, as shown in FIG. 3, the tube 100 and the tube sheet 200 are welded so that the end of the tube is fixed to the tube sheet 200.
위와 같이 튜브(100)가 튜브시트(200)에 밀착 고정된 상태에서 튜브(100)에 열응력이 발생하면 튜브시트(200)가 열응력을 흡수하지 못하고 바로 튜브가 길이방향으로의 팽창이 반복되어 크랙 등의 발생을 유발하여 열교환기의 열효율을 떨어뜨림을 물론, 열교환기의 사용수명을 저하시키는 요인이 되고 있다.When the tube 100 is in close contact with the tube sheet 200 and thermal stress is generated in the tube 100 as described above, the tube sheet 200 does not absorb the thermal stress and the tube is repeatedly expanded in the longitudinal direction. In addition, the occurrence of cracks and the like decreases the thermal efficiency of the heat exchanger, as well as reducing the service life of the heat exchanger.
본 고안은 상기의 문제를 해소하기 위한 것으로, 열교환기의 튜브를 튜브시트에 고정함에 있어서의 튜브시트의 튜브고정구멍과 용접간격을 두고 튜브시트에 일정깊이의 핫댐을 형성하고, 또한 튜브의 끝단을 상기 튜브시트의 튜브고정구멍 보다 노출시키어 형성한 용접부에, 상기 튜브시트의 용접간격과의 용접함으로써, 튜브에 열응력이 발생하더라도 상기 핫댐이 열교환기의 튜브로부터 발생되는 열응력을 흡수하여 튜브와 튜브시트의 사이에 무리를 줄여 튜브에 크랙 등의 결함 발생을 미연에 방지하여, 열효율을 높이고 열교환기의 사용수명을 연장할 수 있는 열교환기의 튜브와 튜브시트의 고정구조를 제공하고자 한다.The present invention is to solve the above problems, to form a hot dam of a certain depth in the tube sheet with a welding interval and the tube fixing hole of the tube sheet in fixing the tube of the heat exchanger to the tube sheet, the end of the tube Is welded to the welded portion formed by exposing the tube fixing hole of the tube sheet to the welding interval of the tube sheet, so that the hot dam absorbs the thermal stress generated from the tube of the heat exchanger even if the thermal stress occurs in the tube. It is to provide a fixing structure of the tube and tube sheet of the heat exchanger to reduce the force between the and the tube sheet to prevent the occurrence of defects such as cracks in the tube in advance, to increase the thermal efficiency and extend the service life of the heat exchanger.
본 고안은 열교환기내의 셀부내에 튜브를 튜브시트의 튜브고정구멍에 고정함에 있어서, 상기 튜브시트의 튜브고정구멍과 용접간격을 두고 핫댐을 형성하여, 상기 튜브의 끝단면과 상기 튜브시트의 용접간격에 용접이 행하여져 고정되도록 됨을 기본특징으로 한다.According to the present invention, in fixing a tube to a tube fixing hole of a tube sheet in a cell part of a heat exchanger, a hot dam is formed with a welding interval between the tube fixing hole of the tube sheet, and the end surface of the tube is welded to the tube sheet. It is a basic feature that welding is performed at intervals to be fixed.
본 고안의 상기 핫댐은 튜브시트의 둘레면에 절삭성형된 깊이있는 요홈이며,또한 상기 용접간격은 상기 튜브의 두께 보다 큰 칫수의 간격으로 형성하여 용접이 행하여지도록 되어 있다.The hot dam of the present invention is a deep groove cut on the circumferential surface of the tube sheet, and the welding interval is formed by the interval of the dimension larger than the thickness of the tube to be welded.
도 1 는 일반 열교환기의 개략도,1 is a schematic diagram of a general heat exchanger,
도 2 는 종래의 열교환기의 튜브시트의 가공과 튜브의 셋팅구조의 일부절결 확대 단면도,2 is a partially cut-away enlarged cross-sectional view of a tube sheet processing and tube setting structure of a conventional heat exchanger;
도 3 은 종래의 열교환기의 튜브와 튜브시트의 용접처리에 의한 고정구조의 일부절결 확대 단면도,3 is a partially cut-away enlarged cross-sectional view of a fixing structure by welding a tube and a tube sheet of a conventional heat exchanger;
도 4 는 본 고안의 열교환기의 튜브시트의 가공과 튜브의 셋팅구조의 일부절결 확대 단면도,4 is a partially cut-away enlarged cross-sectional view of the tube sheet processing and tube setting structure of the heat exchanger of the present invention;
도 5 는 본 고안의 열교환기의 튜브와 튜브시트의 고정구조의 일부 절결 확대 단면도.5 is a partially cut-away enlarged cross-sectional view of the fixing structure of the tube and the tubesheet of the heat exchanger of the present invention.
* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
10 : 열교환기 20 : 셀부10: heat exchanger 20: cell part
30 : 채널 100 : 튜브30: channel 100: tube
110 : 끝단면 200 : 튜브시트110: end surface 200: tube sheet
210 : 튜브고정구멍 220 : 핫댐210: tube fixing hole 220: hot dam
230 : 용접간격230: welding interval
본 고안의 구성을 첨부도면에 의하여 상세히 설명하면 다음과 같다.Referring to the configuration of the present invention in detail by the accompanying drawings as follows.
도 1에 나타낸 바와 같이 열교환기는 셀부(20)와 채널부(30)가 결합되어 화공유체 등의 용액의 열을 교환하게 된다.As shown in FIG. 1, the heat exchanger is coupled to the cell unit 20 and the channel unit 30 to exchange heat of a solution such as a chemical coagulant.
특히, 상기 열교환기(10)내의 셀부(20)내에는 다수의 튜브(100)가 길이방향으로 뻗어있으며, 이들의 튜브(100)의 끝단들은 튜브시트(200)의 튜브고정구멍(210)에 용접에 의해 고정하도록 되어 있다.In particular, the plurality of tubes 100 extend in the longitudinal direction in the cell portion 20 of the heat exchanger 10, the ends of the tube 100 of the tube fixing hole 210 of the tube sheet 200 It is fixed by welding.
본 고안은 도 4 및 도 5 에 나타낸 바와 같이 상기 튜브시트(200)의 튜브고정구멍(210)과 용접간격(230)을 두고 핫댐(220)이 절삭 가공되어 있으며, 이 핫댐(220)은 절삭 성형된 깊이있는 요홈의 형태로 가공되어 있다.4 and 5, the hot dam 220 is cut by the tube fixing hole 210 and the welding interval 230 of the tube sheet 200, and the hot dam 220 is cut. It is processed in the form of molded deep groove.
그리고, 상기 용접간격(230)은, 상기 튜브(100)의 두께 보다 칫수와 같거나 큰 칫수의 간격으로 형성되어 상기 튜브(100)의 끝단면(110)과 상기 튜브시트(200)의 용접간격(230)에 용접이 행하여져 고정되도록 되어 있다.In addition, the welding interval 230 is formed at intervals of the same or larger dimensions than the thickness of the tube 100 to weld intervals between the end surface 110 of the tube 100 and the tube sheet 200. Welding is performed to 230 to fix it.
상기 용접간격(230)은 상기 튜브의 끝단면(110)과의 용접이 용이하도록 하고 또한 핫댐(220)의 확보를 위하여 용접간격을 두어야 한다.The welding interval 230 should be easy to weld with the end surface 110 of the tube, and should also have a welding interval to secure the hot dam 220.
또한 상기 튜브(100)의 끝단면은 도 4에 나타낸 바와 같이 상기 튜브시트(200)의 튜브고정구멍(210)으로부터 일정 칫수로 노출되도록 셋팅시킨 상태에서 상기 튜브(100)의 끝단면(110)과 상기 튜브시트(200)의 용접간격(230)에 용접이 행하여지도록 하면, 도 5 와 같이 튜브시트(200)의 용접간격(230)부위에 튜브(100)의 끝단면(110)이 용접되어 상기 핫댐(220)의 역할을 담당하여 튜브(100)에 열응력이 반복적으로 작용하더라도 튜브시트(200)가 열응력을 흡수하여 크랙 등의 결함을 예방하게 된다.In addition, the end surface 110 of the tube 100 is set to be exposed to a predetermined dimension from the tube fixing hole 210 of the tube sheet 200, as shown in Figure 4 end surface 110 of the tube 100 When the welding is performed to the welding interval 230 of the tube sheet 200, the end surface 110 of the tube 100 is welded to the welding interval 230 of the tube sheet 200 as shown in FIG. 5. Even though the thermal stress acts repeatedly on the tube 100 by acting as the hot dam 220, the tube sheet 200 absorbs the thermal stress to prevent defects such as cracks.
이상과 같이, 본 고안은 열교환기의 튜브를 튜브시트에 고정함에 있어서의 튜브시트의 튜브고정구멍과 용접간격을 두고 튜브시트에 일정깊이의 핫댐을 형성하고, 또한 튜브의 끝단을 상기 튜브시트의 튜브고정구멍 보다 노출시키어 형성한 용접부에, 상기 튜브시트의 용접간격과의 용접함으로써, 튜브에 열응력이 발생하더라도 상기 핫댐이 열교환기의 튜브로부터 발생되는 열응력을 흡수하여 튜브와 튜브시트의 사이에 무리를 줄여 튜브에 크랙 등의 결함 발생을 미연에 방지하여, 열효율을 높이고 열교환기의 사용수명을 연장할 수 있다.As described above, the present invention forms a hot dam of a predetermined depth in the tube sheet at intervals between the tube fixing hole of the tube sheet and the welding interval in fixing the tube of the heat exchanger to the tube sheet, and the end of the tube is By welding with the welding interval of the tube sheet, the welded portion formed by exposing the tube fixing hole, the hot dam absorbs the thermal stress generated from the tube of the heat exchanger even though the thermal stress is generated in the tube. By reducing the number of cracks, defects such as cracks in the tube can be prevented in advance, thereby improving thermal efficiency and extending the service life of the heat exchanger.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0025390U KR200333602Y1 (en) | 2003-08-06 | 2003-08-06 | Fixed structure of tube and tube seat for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0025390U KR200333602Y1 (en) | 2003-08-06 | 2003-08-06 | Fixed structure of tube and tube seat for heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| KR200333602Y1 true KR200333602Y1 (en) | 2003-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20-2003-0025390U Ceased KR200333602Y1 (en) | 2003-08-06 | 2003-08-06 | Fixed structure of tube and tube seat for heat exchanger |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200448730Y1 (en) | 2008-07-04 | 2010-05-11 | (주)일진에너지 | Two Head Heat Exchanger |
| KR101298703B1 (en) * | 2012-01-12 | 2013-08-21 | 주식회사 동화엔텍 | Method for joining the tube and the tube sheet in shell |
| KR200475744Y1 (en) * | 2013-05-21 | 2014-12-30 | 주식회사 동화엔텍 | Joint structure of the tube and the tube sheet in shell and tube exchanger |
| US11860113B2 (en) | 2021-03-30 | 2024-01-02 | Digiray Corp. | Tube weld X-ray inspection device comprising an X-ray source, an X-ray source support, and an image plate fixing part for fixing an image plate |
| US11874236B2 (en) | 2021-03-30 | 2024-01-16 | Digiray Corp. | Tube weld x-ray inspection device |
-
2003
- 2003-08-06 KR KR20-2003-0025390U patent/KR200333602Y1/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200448730Y1 (en) | 2008-07-04 | 2010-05-11 | (주)일진에너지 | Two Head Heat Exchanger |
| KR101298703B1 (en) * | 2012-01-12 | 2013-08-21 | 주식회사 동화엔텍 | Method for joining the tube and the tube sheet in shell |
| KR200475744Y1 (en) * | 2013-05-21 | 2014-12-30 | 주식회사 동화엔텍 | Joint structure of the tube and the tube sheet in shell and tube exchanger |
| US11860113B2 (en) | 2021-03-30 | 2024-01-02 | Digiray Corp. | Tube weld X-ray inspection device comprising an X-ray source, an X-ray source support, and an image plate fixing part for fixing an image plate |
| US11874236B2 (en) | 2021-03-30 | 2024-01-16 | Digiray Corp. | Tube weld x-ray inspection device |
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