CN104896092A - Low-stress hole plugging pin special for pipe pipe-sheet heat exchanger - Google Patents
Low-stress hole plugging pin special for pipe pipe-sheet heat exchanger Download PDFInfo
- Publication number
- CN104896092A CN104896092A CN201510274733.9A CN201510274733A CN104896092A CN 104896092 A CN104896092 A CN 104896092A CN 201510274733 A CN201510274733 A CN 201510274733A CN 104896092 A CN104896092 A CN 104896092A
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- Prior art keywords
- plug
- hole
- hole pin
- main body
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/04—Sealings between relatively-stationary surfaces without packing between the surfaces, e.g. with ground surfaces, with cutting edge
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
The invention discloses a low-stress hole plugging pin special for a pipe pipe-sheet heat exchanger, and relates to a low-stress hole plugging pin. The low-stress hole plugging pin solves the problems that an existing hole plugging pin cannot eliminate or reduce welding stress generated by welding, and connecting welding lines of the hole plugging pin and the hole wall are prone to being cracked. A hole plugging pin body (1) is a circular truncated cone column, a center blind hole (1-1) is machined in the large end of the hole plugging pin body (1) in the length direction, the length (L) of the hole plugging pin body (1) ranges from 40 mm to 65 mm, the diameter (D) of the large end of the hole plugging pin body (1) ranges from 8 mm to 63 mm, the diameter (d) of the center blind hole (1-1) ranges from 4 mm to 30 mm, the depth (h) of the center blind hole (1-1) ranges from 15 mm to 40 mm, the taper of the hole plugging pin body (1) is 1:15, and the material of the low-stress hole plugging pin is the same as the material of a heat exchange pipe of the plugged heat exchanger. The low-stress hole plugging pin is used for overhauling the pipe pipe-sheet heat exchanger/.
Description
Technical field
The present invention relates to a kind of low stress plug-hole pin, be specifically related to the low stress plug-hole pin during maintenance of a kind of tube-tube plate formula heat exchange pressure vessel and equipment.
Background technique
Heat exchange container is widely used in the industries such as oil, chemical industry, electric power, health care, what adopt tube-to-tube sheet connection formula structure in heat exchange container occupies larger ratio, be all utilize the flowing medium of different temperatures inside and outside heat exchanging tube to carry out exchange heat, reach the effect of heating or cooling.No matter be tube still type or U-shaped tubular heat exchanger, when exchanger tubes and tubesheets is connected weld seam or heat exchanging tube generation leakage itself, the means of maintenance adopt the way of plug-hole to solve mostly, existing plug-hole plug-hole pin used is all solid cylinder, because the welding stress of welding generation can not be eliminated or reduce to existing plug-hole pin, cause the attachment weld of plug-hole pin self and hole wall easily to ftracture, also the attachment weld drawing crack of the exchanger tubes and tubesheets of periphery can be added maintenance load.
To sum up, the welding stress that welding produces can not be eliminated or reduce to existing plug-hole pin, causes the attachment weld of plug-hole pin self and hole wall easily to ftracture.
Summary of the invention
The present invention solves the welding stress that welding generation could not be eliminated or reduce to existing plug-hole pin, the problem that the attachment weld that there is plug-hole pin self and hole wall easily ftractures, and then provides a kind of tube-tube plate formula heat exchanger special low stress plug-hole pin.
The present invention solves the problems of the technologies described above the technological scheme taked to be:
Tube-tube plate formula heat exchanger of the present invention special low stress plug-hole pin comprises plug-hole pin main body, plug-hole pin main body is round platform post, the large end of plug-hole pin main body is processed with central blind hole along its length, the length of plug-hole pin main body is 40 ~ 65 ㎜, plug-hole pin main body Outside diameter is 8 ~ 63 ㎜, and the diameter of central blind hole is 4 ~ 30 ㎜, and the degree of depth of central blind hole is 15 ~ 40 ㎜, the tapering of plug-hole pin main body is 1:15, and low stress plug-hole pin material is identical with by the heat exchanging tube material of blocking heat exchanger.
The present invention and prior art have following beneficial effect:
Tube-tube plate formula heat exchanger of the present invention special low stress plug-hole pin is provided with the central blind hole eliminated stress, and when welding high-temperature expansion, blind hole absorbs the tension force of heat expansion; When welding end cooling, blind hole compensate for the pulling force of shrinkage; Make to weld the stress produced greatly to reduce, improve repair quality and overhaul efficiency.
Accompanying drawing explanation
Fig. 1 is the plan view of tube-tube plate formula heat exchanger of the present invention special low stress plug-hole pin, Fig. 2 be low stress plug-hole pin of the present invention with tube sheet weld schematic diagram (stretched), Fig. 3 be low stress plug-hole pin of the present invention with tube sheet weld schematic diagram (indented style), Fig. 4 be low stress plug-hole pin of the present invention with pipe weld schematic diagram (stretched), Fig. 5 be low stress plug-hole pin of the present invention with pipe weld schematic diagram (indented style).
Embodiment
Embodiment one: as Fig. 1, shown in Fig. 4 and Fig. 5, the tube-tube plate formula heat exchanger special low stress plug-hole pin of present embodiment comprises plug-hole pin main body 1, plug-hole pin main body 1 is round platform post, the large end of plug-hole pin main body 1 is processed with central blind hole 1-1 along its length, the length L of plug-hole pin main body 1 is 40 ~ 65 ㎜, plug-hole pin main body 1 Outside diameter D is 8 ~ 63 ㎜, the diameter d of central blind hole 1-1 is 4 ~ 30 ㎜, the degree of depth h of central blind hole 1-1 is 15 ~ 40 ㎜, the tapering of plug-hole pin main body 1 is 1:15, low stress plug-hole pin material is identical with by the heat exchanging tube material of blocking heat exchanger.
Embodiment two: as shown in Figure 1, the length L of present embodiment plug-hole pin main body 1 is 40 ㎜, and plug-hole pin main body 1 Outside diameter D is 7.7 ~ 13 ㎜, and the diameter d of central blind hole 1-1 is 4 ㎜, and the degree of depth h of central blind hole 1-1 is 15 ㎜.Design like this, but the size designing plug-hole pin according to the size of the bore dia that is blocked.Other composition and annexation identical with embodiment one.
Embodiment three: as shown in Figure 1, the length L of present embodiment plug-hole pin main body 1 is 45 ㎜, and plug-hole pin main body 1 Outside diameter D is 11.7 ~ 19 ㎜, and the diameter d of central blind hole 1-1 is 6 ㎜, and the degree of depth h of central blind hole 1-1 is 20 ㎜.Design like this, but the size designing plug-hole pin according to the size of the bore dia that is blocked.Other composition and annexation identical with embodiment one.
Embodiment four: as shown in Figure 1, the length L of present embodiment plug-hole pin main body 1 is 50 ㎜, and plug-hole pin main body 1 Outside diameter D is 17.7 ~ 29 ㎜, and the diameter d of central blind hole 1-1 is 10 ㎜, and the degree of depth h of central blind hole 1-1 is 25 ㎜.Design like this, but the size designing plug-hole pin according to the size of the bore dia that is blocked.Other composition and annexation identical with embodiment one.
Embodiment five: as shown in Figure 1, the length L of present embodiment plug-hole pin main body 1 is 55 ㎜, and plug-hole pin main body 1 Outside diameter D is 27.7 ~ 39 ㎜, and the diameter d of central blind hole 1-1 is 15 ㎜, and the degree of depth h of central blind hole 1-1 is 30 ㎜.Design like this, but the size designing plug-hole pin according to the size of the bore dia that is blocked.Other composition and annexation identical with embodiment one.
Embodiment six: as shown in Figure 1, the length L of present embodiment plug-hole pin main body 1 is 60 ㎜, and plug-hole pin main body 1 Outside diameter D is 37.7 ~ 52 ㎜, and the diameter d of central blind hole 1-1 is 20 ㎜, and the degree of depth h of central blind hole 1-1 is 35 ㎜.Design like this, but the size designing plug-hole pin according to the size of the bore dia that is blocked.Other composition and annexation identical with embodiment one.
Embodiment seven: as shown in Figure 1, the length L of present embodiment plug-hole pin main body 1 is 65 ㎜, and plug-hole pin main body 1 Outside diameter D is 50.7 ~ 64 ㎜, and the diameter d of central blind hole 1-1 is 30 ㎜, and the degree of depth h of central blind hole 1-1 is 40 ㎜.Other composition and annexation identical with embodiment one.
Working principle:
As shown in Fig. 1 ~ Fig. 5, plug-hole pin needs to connect with the eyelet welding that is blocked, and the stress that common plug-hole pin produces when welding cannot be eliminated, sometimes self attachment weld drawing crack or the heat exchanging tube attachment weld drawing crack adjacent with plug-hole; And low level plug-hole pin of the present invention is provided with the central blind hole eliminated stress, when welding high-temperature expansion, blind hole absorbs the tension force of heat expansion; When welding end cooling, blind hole compensate for the pulling force of shrinkage; Make to weld the stress produced greatly to reduce, improve repair quality and overhaul efficiency.
Claims (7)
1. a tube-tube plate formula heat exchanger special low stress plug-hole pin, described low stress plug-hole pin comprises plug-hole pin main body (1), it is characterized in that: plug-hole pin main body (1) is round platform post, the large end of plug-hole pin main body (1) is processed with central blind hole (1-1) along its length, the length (L) of plug-hole pin main body (1) is 40 ~ 65 ㎜, plug-hole pin main body (1) Outside diameter (D) is 8 ~ 63 ㎜, the diameter (d) of central blind hole (1-1) is 4 ~ 30 ㎜, the degree of depth (h) of central blind hole (1-1) is 15 ~ 40 ㎜, the tapering of plug-hole pin main body (1) is 1:15, low stress plug-hole pin material is identical with by the heat exchanging tube material of blocking heat exchanger.
2. tube-tube plate formula heat exchanger according to claim 1 special low stress plug-hole pin, it is characterized in that: the length (L) of plug-hole pin main body (1) is 40 ㎜, plug-hole pin main body (1) Outside diameter (D) is 7.7 ~ 13 ㎜, the diameter (d) of central blind hole (1-1) is 4 ㎜, and the degree of depth (h) of central blind hole (1-1) is 15 ㎜.
3. tube-tube plate formula heat exchanger according to claim 1 special low stress plug-hole pin, it is characterized in that: the length (L) of plug-hole pin main body (1) is 45 ㎜, plug-hole pin main body (1) Outside diameter (D) is 11.7 ~ 19 ㎜, the diameter (d) of central blind hole (1-1) is 6 ㎜, and the degree of depth (h) of central blind hole (1-1) is 20 ㎜.
4. tube-tube plate formula heat exchanger according to claim 1 special low stress plug-hole pin, it is characterized in that: the length (L) of plug-hole pin main body (1) is 50 ㎜, plug-hole pin main body (1) Outside diameter (D) is 17.7 ~ 29 ㎜, the diameter (d) of central blind hole (1-1) is 10 ㎜, and the degree of depth (h) of central blind hole (1-1) is 25 ㎜.
5. tube-tube plate formula heat exchanger according to claim 1 special low stress plug-hole pin, it is characterized in that: the length (L) of plug-hole pin main body (1) is 55 ㎜, plug-hole pin main body (1) Outside diameter (D) is 27.7 ~ 39 ㎜, the diameter (d) of central blind hole (1-1) is 15 ㎜, and the degree of depth (h) of central blind hole (1-1) is 30 ㎜.
6. tube-tube plate formula heat exchanger according to claim 1 special low stress plug-hole pin, it is characterized in that: the length (L) of plug-hole pin main body (1) is 60 ㎜, plug-hole pin main body (1) Outside diameter (D) is 37.7 ~ 52 ㎜, the diameter (d) of central blind hole (1-1) is 20 ㎜, and the degree of depth (h) of central blind hole (1-1) is 35 ㎜.
7. tube-tube plate formula heat exchanger according to claim 1 special low stress plug-hole pin, it is characterized in that: the length (L) of plug-hole pin main body (1) is 65 ㎜, plug-hole pin main body (1) Outside diameter (D) is 50.7 ~ 64 ㎜, the diameter (d) of central blind hole (1-1) is 30 ㎜, and the degree of depth (h) of central blind hole (1-1) is 40 ㎜.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510274733.9A CN104896092A (en) | 2015-05-26 | 2015-05-26 | Low-stress hole plugging pin special for pipe pipe-sheet heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510274733.9A CN104896092A (en) | 2015-05-26 | 2015-05-26 | Low-stress hole plugging pin special for pipe pipe-sheet heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN104896092A true CN104896092A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510274733.9A Pending CN104896092A (en) | 2015-05-26 | 2015-05-26 | Low-stress hole plugging pin special for pipe pipe-sheet heat exchanger |
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| CN (1) | CN104896092A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339426A (en) * | 2017-06-30 | 2017-11-10 | 中国科学院长春光学精密机械与物理研究所 | A kind of spoke cold drawing fills the high-air-tightness combined sealing structure of head |
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|---|---|---|---|---|
| CN1411399A (en) * | 1999-10-26 | 2003-04-16 | 丰田自动车株式会社 | Rivet, riveted joint structure, riveting apparatus and riveting method |
| CN2641363Y (en) * | 2003-09-19 | 2004-09-15 | 孙家元 | Mechanism for quick connecting guardrail tube and frame of shaped material door or window |
| CN1622790A (en) * | 2000-03-16 | 2005-06-01 | 斯罗博丹·特皮克 | Screw anchored joint prosthesis |
| CN2922820Y (en) * | 2006-06-15 | 2007-07-18 | 常州邦德医疗器械有限公司 | Locking bone-setting board screw auxiliary assembly |
| CN101730606A (en) * | 2007-07-03 | 2010-06-09 | 伊卓特有限两合公司 | Friction weld assembly of a plurality of plates arranged one above the other |
| CN102256766A (en) * | 2008-12-23 | 2011-11-23 | 伍德韦尔丁公司 | Method of anchoring a connector, and connector |
| CN204228363U (en) * | 2014-11-11 | 2015-03-25 | 内蒙古伊泰煤制油有限责任公司 | Without shell side fixed tube-sheet exchanger heat exchanger tube leak detection apparatus |
| CN104564966A (en) * | 2013-10-10 | 2015-04-29 | 本田技研工业株式会社 | Waterproof clip |
| CN104588961A (en) * | 2014-11-25 | 2015-05-06 | 麦克维尔空调制冷(武汉)有限公司 | Heat exchanger three-tube plate expanding and inner leaking repairing method |
-
2015
- 2015-05-26 CN CN201510274733.9A patent/CN104896092A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411399A (en) * | 1999-10-26 | 2003-04-16 | 丰田自动车株式会社 | Rivet, riveted joint structure, riveting apparatus and riveting method |
| CN1622790A (en) * | 2000-03-16 | 2005-06-01 | 斯罗博丹·特皮克 | Screw anchored joint prosthesis |
| CN2641363Y (en) * | 2003-09-19 | 2004-09-15 | 孙家元 | Mechanism for quick connecting guardrail tube and frame of shaped material door or window |
| CN2922820Y (en) * | 2006-06-15 | 2007-07-18 | 常州邦德医疗器械有限公司 | Locking bone-setting board screw auxiliary assembly |
| CN101730606A (en) * | 2007-07-03 | 2010-06-09 | 伊卓特有限两合公司 | Friction weld assembly of a plurality of plates arranged one above the other |
| CN102256766A (en) * | 2008-12-23 | 2011-11-23 | 伍德韦尔丁公司 | Method of anchoring a connector, and connector |
| CN104564966A (en) * | 2013-10-10 | 2015-04-29 | 本田技研工业株式会社 | Waterproof clip |
| CN204228363U (en) * | 2014-11-11 | 2015-03-25 | 内蒙古伊泰煤制油有限责任公司 | Without shell side fixed tube-sheet exchanger heat exchanger tube leak detection apparatus |
| CN104588961A (en) * | 2014-11-25 | 2015-05-06 | 麦克维尔空调制冷(武汉)有限公司 | Heat exchanger three-tube plate expanding and inner leaking repairing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339426A (en) * | 2017-06-30 | 2017-11-10 | 中国科学院长春光学精密机械与物理研究所 | A kind of spoke cold drawing fills the high-air-tightness combined sealing structure of head |
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Application publication date: 20150909 |