CN103466212A - Support device and method for tube bundle - Google Patents
Support device and method for tube bundle Download PDFInfo
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- CN103466212A CN103466212A CN2013104391743A CN201310439174A CN103466212A CN 103466212 A CN103466212 A CN 103466212A CN 2013104391743 A CN2013104391743 A CN 2013104391743A CN 201310439174 A CN201310439174 A CN 201310439174A CN 103466212 A CN103466212 A CN 103466212A
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- right support
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- limited lever
- tube bank
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Abstract
The invention discloses a support device and method for a tube bundle. The support device comprises a base and at least two groups of fixing frames, wherein the two groups of fixing frames comprise a first group of fixing frames and a second group of fixing frames; the first group of the fixing frames comprises a first left bracket and a first right bracket; the first left bracket and the first right bracket are vertically fixed on both sides of the upper surface of the base respectively; the second group of fixing frames comprises a second left bracket and a second right bracket; the second left bracket and the second right bracket are fixed on both sides of the upper surface of the base respectively; a detachable limiting rod is arranged between the first left bracket and the first right bracket; a detachable limiting rod is arranged between the second left bracket and the second right bracket; each limiting rod is parallel to the surface of the base; and the distance between two adjacent limiting rods is matched with the outer diameter of a tube body in the tube bundle. The support device for the tube bundle disclosed by the invention can be used repeatedly, does not need any cutting during detaching, and is easy and safe to operate. By adopting the support method of the tube bundle disclosed by the invention, convenience in operation and high assembling speed are realized, any cutting is not needed during detaching, and the operation is easy and safe.
Description
Technical field
The present invention relates to a kind of bracing or strutting arrangement and method for supporting, be specifically related in chemical field Anti-deformation support in the assembling support in a kind of large-scale fluidized bed reactor finger-type tube bank manufacturing process and transportation.
Background technology
The tube bank of the finger-type of fluidized-bed reactor is subject in process of production the corrosion of medium and erosion and produces damage, need to regularly be changed.When originating firm is made tube bank, dactylethrae one end of this tube bank adopts intensity weldering and subsides expanded joint to connect and is fixed on tube sheet, it is long that the other end stretches out 10.2 meters of tube sheets, the dactylethrae external part positions dactylethrae from tube sheet different distance place, being provided with pipe collar 11 ', dactylethrae stretches in pipe collar 11 ', as shown in Figure 1,12 steel rings of pipe collar 11 ' ragged edge and dactylethrae are welded and fixed.Because dactylethrae stretches out length, do not have cylindrical shell and orifice plate to form actv. to dactylethrae and support, therefore, in the making of restraining and transportation, need tube bank is supported, so that the manufacture of tube bank is assembled and prevented that tube bank from producing and being out of shape in transit.
The method for supporting to tube bank commonly used adopts orifice plate to prop up staying, and the pore of orifice plate gets out with together with finger-type pore on tube sheet, and to the pore both sides chamfering of orifice plate, and the bridge in every comb hole is incised to the pore on limit along the horizontal center line direction with gas cutting.The assembling of orifice plate and tube bank, transport base welding, after transporting to erecting stage, then cut the connection of every comb hole to the orifice plate edge with gas cutting, by extracting out from tube bank after the orifice plate bar 90-degree rotation after cutting, orifice plate separated with tube bank.Adopt this method to be supported tube bank, the metalworking work capacity is large, high material consumption, and orifice plate can only be used once, and the cutting that needs at the scene to get angry just can complete the dismounting of orifice plate.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of bracing or strutting arrangement of tube bank, and it can repeated usage, and does not need to carry out any cutting, safety simple to operate during dismounting.
Another object of the present invention is to provide a kind of method for supporting of tube bank, and the method is easy to operate, and assembling speed is fast, does not need to carry out any cutting during dismounting, safety simple to operate.
To achieve these goals, technical solution of the present invention is: a kind of bracing or strutting arrangement of tube bank, comprise base and at least two group fixed mounts, two groups of fixed mounts comprise first group, second group of fixed mount, described first group, second group of fixed mount sets gradually along the length direction of base, described first group of fixed mount comprises the first left socle and the first right support, first left side, right support vertically is fixed in respectively the both sides of described base upper surface along the base Width, described second group of fixed mount comprises second left side, right support, second left side, right support is individually fixed in the both sides of described base upper surface along the base Width, described first left side, be disposed with from top to bottom some detouchable position-limited levers between right support, each position-limited lever two ends and described first left side, be equipped with inhibiting device between right support, described second left side, be disposed with from top to bottom some detouchable position-limited levers between right support, each position-limited lever two ends and described second left side, be equipped with inhibiting device between right support, described each position-limited lever is all parallel with described susceptor surface, spacing between adjacent two position-limited levers matches with the external diameter of tube bank middle tube body.
The bracing or strutting arrangement of the present invention's tube bank, wherein, by two I-beam section girders that are parallel to each other and some and described I-beam section girder, perpendicular I-beam section tie-beam is welded described base, the described first left and right support and the second left and right support are made by channel-section steel, between the described first left and right support and base and between the second left and right support and base, weld mutually.
The bracing or strutting arrangement of the present invention's tube bank, wherein, described position-limited lever is steel pipe, described first left side, have successively from top to bottom some through holes on right support, described through-hole diameter is slightly larger than described position-limited lever external diameter, described first left side, position-limited lever two ends between right support are respectively through first left side, through hole on right support stretches out first left side, outside right support, described first left side, position-limited lever both ends on right support are provided with respectively spring cotter, described second left side, have successively from top to bottom some through holes on right support, described second left side, through-hole diameter on right support is slightly larger than described position-limited lever external diameter, described second left side, position-limited lever two ends on right support are respectively through second left side, through hole on right support stretches out second left side, outside right support, described second left side, position-limited lever both ends on right support are provided with respectively spring cotter.
The bracing or strutting arrangement of the present invention's tube bank, wherein, described first left and right top of the trellis has been bolted the first upper beam, and the first upper beam is horizontally disposed with, and described second left and right top of the trellis has been bolted the second upper beam, and the second upper beam is horizontally disposed with.
The method for supporting of a kind of tube bank of the present invention, comprise the steps: 1) by the tube sheet assembly set, pipe collar is placed on the base of bracing or strutting arrangement, the tube sheet assembly set comprises tube sheet, make tube sheet and base perpendicular, tube sheet and base are removably connected, 2) each body in restraining is successively from first left side, adjacent two position-limited levers and second left side between right support, between adjacent two position-limited levers between right support, pass, and each body is penetrated respectively in pipe collar and tube sheet, 3) by the weldering of each body and tubesheet intensity and paste swollen after, each body in bracing or strutting arrangement and tube bank forms an integral body.
The present invention supports the method for tube bank, wherein, between described tube sheet and base, by bolt, interfixes.
After adopting such scheme, because the base of the bracing or strutting arrangement of the present invention tube bank is provided with at least two group fixed mounts, every group of fixed mount is provided with several position-limited levers, each position-limited lever is detachable, therefore the tube sheet assembly set of tube bank one end can be removably connected on base, the end that tube sheet is stretched out in tube bank is clamped between two position-limited levers, bracing or strutting arrangement and tube sheet assembly set and tube bank are connected as one, be convenient to manufacture assembling and prevent from producing in transit distortion, and after transportation arrives destination, as long as the tube sheet assembly set is dismantled and position-limited lever is extracted out, just can be by tube bank and the installation of slinging of tube sheet assembly set, do not need to carry out any cutting, safety simple to operate, and bracing or strutting arrangement is reusable, reduce waste of material.
First left and right top of the trellis has been bolted the first upper beam, and second left and right top of the trellis has been bolted the second upper beam, makes bracing or strutting arrangement more stable.
The present invention supports the method for tube bank, after tube sheet and base are interfixed, each body in tube bank is passed successively between adjacent two position-limited levers between the first left and right support and adjacent two position-limited levers between the second left and right support, and each body is penetrated respectively in pipe collar and tube sheet, then by the weldering of each body and tubesheet intensity with paste after swollen and can complete, easy to operate, assembling speed is fast, and after transportation arrives destination, do not need to carry out any cutting of getting angry during dismounting, meet the requirement that mustn't get angry in the Chemical Manufacture zone, safety simple to operate.
The accompanying drawing explanation
Fig. 1 is the structural representation of pipe collar;
Fig. 2 is the structural representation of the present invention's bracing or strutting arrangement of restraining;
Fig. 3 is that the A of Fig. 2 is to view.
The specific embodiment
As Fig. 1, shown in 2, the bracing or strutting arrangement of a kind of tube bank of the present invention, comprise base 11, first group of fixed mount 13, 15, the first groups of fixed mounts 13 of second group of fixed mount, second group of fixed mount 15 sets gradually along the length direction of base 11, and first group of fixed mount 13 comprises the first left socle 131 and the first right support, first left side, right support vertically is fixed in respectively the both sides of described base 11 upper surfaces along the base Width, and second group of fixed mount 15 comprises second left side, right support 151, 153, the second left sides, right support is individually fixed in the both sides of base 11 upper surfaces along the base Width, and base 11 is by two I-beam section girders 111 that are parallel to each other, 113 and many with the perpendicular I-beam section tie-beam 112 of two girders, be welded to form, first left side, right support and second left side, right support is made by channel-section steel, first left side, between right support and base 11 and second left side, right support 151, 153 and base 11 between mutually the welding, first left side, be disposed with from top to bottom many position-limited levers 17 between right support, each position-limited lever 17 two ends and described first left side, be equipped with inhibiting device between right support, second left side, right support 151, be disposed with from top to bottom many position-limited levers 17 between 153, each position-limited lever 17 two ends and second left side, be equipped with inhibiting device between right support, each position-limited lever 17 is all parallel with base 11 surfaces, and the spacing between adjacent two position-limited levers 17 matches with the external diameter of tube bank middle tube body, and body can be clamped between upper and lower two adjacent position-limited levers 17.
Position-limited lever 17 adopts steel pipe, first left side, have successively from top to bottom a plurality of through holes on right support, through-hole diameter is slightly larger than position-limited lever 17 external diameters, position-limited lever 17 two ends are respectively through first left side, through hole on right support stretches out first left side, outside right support, position-limited lever 17 both ends are provided with respectively for preventing position-limited lever 17 first left side of scurrying out, the spring cotter of right support, two spring cotter inboards are provided with flat gasket, second left side, right support 151, have successively from top to bottom a plurality of through holes on 153, second left side, right support 151, through-hole diameter on 153 is slightly larger than position-limited lever 17 external diameters, second left side, right support 151, position-limited lever 17 two ends on 153 are respectively through second left side, through hole on right support stretches out second left side, right support 151, outside 153, second left side, position-limited lever 17 both ends on right support are provided with respectively and prevent position-limited lever 17 second left side of scurrying out, right support 151, 153 spring cotter 171, two spring cotter 171 inboards are provided with flat gasket.
First left and right top of the trellis also has been bolted the first upper beam 135, the first upper beam is horizontally disposed with, the second left and right support 151,153 tops have been bolted the second upper beam 155 equally, the second upper beam 155 is horizontally disposed with, three groups or four groups of fixed mounts also can be set on base 11, it is identical that each organizes fixed rack structure, and respectively organize fixed mount and set gradually along the length direction of base 11, all is provided with in an identical manner many position-limited levers on every group of fixed mount.
A kind of bracing or strutting arrangement of above-mentioned tube bank that adopts supports the method for restraining, comprise the steps: 1) by tube sheet assembly set 21, pipe collar 22 is placed on the base 11 of bracing or strutting arrangement, as shown in Figure 2, tube sheet assembly set 21 comprises butt flange 212, tube sheet 213 and cylindrical shell 211, make tube sheet and the base 11 of tube sheet assembly set 21 perpendicular, base 11 left sides, right two ends are welded with respectively connecting panel 115, the connecting panel 115 at tube sheet 213 and base 11 two ends, left and right is interfixed by bolt respectively, 2) each body 31 in restraining is successively from first left side, adjacent two position-limited levers 17 and second left side between right support, between adjacent two position-limited levers 17 between right support, pass, and each body 31 other ends are penetrated respectively in pipe collar 22 and tube sheet 213, 3) by each body 31 and tube sheet 213 intensity welderings and paste swollen after, each body in bracing or strutting arrangement and tube bank forms an integral body.All be welded with stay bearing plate 18 between one of bottom and base 11 in position-limited lever 17 in position-limited lever 17 between the first left and right support between a bottom left and right support of level second.
After transporting to erecting stage, before installing, tube bank only need pull down bolt, the nut between tube sheet and base, spring cotter 171 and the flat gasket at dismounting position-limited lever 17 two ends, extract position-limited lever out, nethermost position-limited lever does not need to pull down, remove first, second upper beam with bolt, nut, connection, just tube bank can be sling and installed.
The above embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineering staff in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. the bracing or strutting arrangement of a tube bank, it is characterized in that: comprise base (11) and at least two group fixed mounts, two groups of fixed mounts comprise first group, second group of fixed mount (13, 15), described first group of fixed mount (13), second group of fixed mount (15) sets gradually along the length direction of base (11), described first group of fixed mount (13) comprises the first left socle (131) and the first right support, first left side, right support vertically is fixed in respectively the both sides of described base (11) upper surface along the base Width, described second group of fixed mount (15) comprises second left side, right support (151, 153), second left side, right support is individually fixed in the both sides of described base (11) upper surface along the base Width, described first left side, be disposed with from top to bottom some detouchable position-limited levers (17) between right support, each position-limited lever (17) two ends and described first left side, be equipped with inhibiting device between right support, described second left side, be disposed with from top to bottom some detouchable position-limited levers (17) between right support, each position-limited lever (17) two ends and described second left side, be equipped with inhibiting device between right support, described each position-limited lever (17) is all parallel with described base (11) surface, spacing between adjacent two position-limited levers (17) matches with the external diameter of tube bank middle tube body.
2. the bracing or strutting arrangement of tube bank as claimed in claim 1, it is characterized in that: by two I-beam section girders that are parallel to each other (111,113) and some and described I-beam section girder (111,113), perpendicular I-beam section tie-beam (112) is welded described base (11), the described first left and right support and the second left and right support are made by channel-section steel, between the described first left and right support and base (11) and between the second left and right support and base (11), weld mutually.
3. the bracing or strutting arrangement of tube bank as claimed in claim 2, it is characterized in that: described position-limited lever (17) is steel pipe, described first left side, have successively from top to bottom some through holes on right support, described through-hole diameter is slightly larger than described position-limited lever (17) external diameter, described first left side, position-limited lever between right support (17) two ends are respectively through first left side, through hole on right support stretches out first left side, outside right support, described first left side, position-limited lever on right support (17) both ends are provided with respectively spring cotter, described second left side, have successively from top to bottom some through holes on right support, described second left side, through-hole diameter on right support is slightly larger than described position-limited lever (17) external diameter, described second left side, position-limited lever on right support (17) two ends are respectively through second left side, through hole on right support stretches out second left side, outside right support, described second left side, position-limited lever on right support (17) both ends are provided with respectively spring cotter (171).
4. the bracing or strutting arrangement of tube bank as claimed in claim 3, it is characterized in that: described first left and right top of the trellis has been bolted the first upper beam (135), the first upper beam is horizontally disposed with, the described second left and right support (151,153) top has been bolted the second upper beam (155), and the second upper beam (155) is horizontally disposed with.
5. one kind adopts the bracing or strutting arrangement of the arbitrary described tube bank of claim 1-4 to support the method for restraining, it is characterized in that: comprise the steps: 1) by tube sheet assembly set (21), pipe collar (22) is placed on the base (11) of bracing or strutting arrangement, tube sheet assembly set (21) comprises tube sheet (213), make tube sheet (213) and base (11) perpendicular, tube sheet (213) and base (11) are removably connected, 2) each body (31) in restraining is successively from first left side, adjacent two position-limited levers (17) and second left side between right support, between adjacent two position-limited levers (17) between right support, pass, and each body (31) is penetrated respectively in pipe collar (22) and tube sheet (213), 3) by the weldering of each body (31) and tube sheet (213) intensity and paste swollen after, each body in bracing or strutting arrangement and tube bank forms an integral body.
6. the method for support tube bank as claimed in claim 5, is characterized in that: between described tube sheet (213) and base (11), by bolt, interfix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310439174.3A CN103466212B (en) | 2013-09-24 | 2013-09-24 | The support means of a kind of tube bank and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310439174.3A CN103466212B (en) | 2013-09-24 | 2013-09-24 | The support means of a kind of tube bank and method |
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| CN103466212A true CN103466212A (en) | 2013-12-25 |
| CN103466212B CN103466212B (en) | 2016-08-10 |
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| CN201310439174.3A Active CN103466212B (en) | 2013-09-24 | 2013-09-24 | The support means of a kind of tube bank and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618593A (en) * | 2014-11-11 | 2016-06-01 | 泰州市金鹰精密铸造有限公司 | Quick riveting tool of EGR heat exchange pipes |
| CN107826958A (en) * | 2017-11-14 | 2018-03-23 | 安徽晨讯智能科技有限公司 | A kind of pipe fitting hoisting structure |
| CN108016712A (en) * | 2017-12-05 | 2018-05-11 | 重庆尚鸿捷精密机械有限公司 | A kind of device and its manufacture method for steel pipe storage positioning |
| CN109202426A (en) * | 2018-09-12 | 2019-01-15 | 广西建工集团第安装有限公司 | A kind of large-scale vertical fixed tube-sheet exchanger scene process equipment for pipe penetration device and technique |
| CN110104323A (en) * | 2019-04-25 | 2019-08-09 | 贝滨（广东）科技有限公司 | A kind of assembled tubing |
| CN111332564A (en) * | 2020-03-15 | 2020-06-26 | 河北源泷科技有限公司 | A safe type support for dismantling bundle dress pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000043235A1 (en) * | 1999-01-23 | 2000-07-27 | Cargomax | Method and apparatus for secure storage and handling of elongate objects |
| WO2011018614A2 (en) * | 2009-08-10 | 2011-02-17 | Paul Brebner | A transportation cradle for tubular goods |
| CN202935777U (en) * | 2012-11-26 | 2013-05-15 | 福建亚通新材料科技股份有限公司 | Plastic tube staking frame capable of being repeatedly used |
| CN103213782A (en) * | 2013-04-12 | 2013-07-24 | 中国人民解放军后勤工程学院 | Pipe bunching device matching with pipe distributing vehicle and ordinary conveying vehicle |
| CN203473587U (en) * | 2013-09-24 | 2014-03-12 | 中国化学工程第三建设有限公司 | Tube bundle supporting device |
-
2013
- 2013-09-24 CN CN201310439174.3A patent/CN103466212B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000043235A1 (en) * | 1999-01-23 | 2000-07-27 | Cargomax | Method and apparatus for secure storage and handling of elongate objects |
| WO2011018614A2 (en) * | 2009-08-10 | 2011-02-17 | Paul Brebner | A transportation cradle for tubular goods |
| CN202935777U (en) * | 2012-11-26 | 2013-05-15 | 福建亚通新材料科技股份有限公司 | Plastic tube staking frame capable of being repeatedly used |
| CN103213782A (en) * | 2013-04-12 | 2013-07-24 | 中国人民解放军后勤工程学院 | Pipe bunching device matching with pipe distributing vehicle and ordinary conveying vehicle |
| CN203473587U (en) * | 2013-09-24 | 2014-03-12 | 中国化学工程第三建设有限公司 | Tube bundle supporting device |
Non-Patent Citations (3)
| Title |
|---|
| 李金萍: "换热器制造检验中的几个问题", 《山东化工》 * |
| 董天禄: "《离心式/螺杆式制冷机组及应用》", 31 October 2001, 机械工业出版社 * |
| 邹华: "高效节能固定式双管板换热器制造", 《中国化工装备》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618593A (en) * | 2014-11-11 | 2016-06-01 | 泰州市金鹰精密铸造有限公司 | Quick riveting tool of EGR heat exchange pipes |
| CN105618593B (en) * | 2014-11-11 | 2017-09-05 | 泰州市金鹰精密铸造有限公司 | A kind of EGR heat exchanger tubes Quick-rivet frock |
| CN107826958A (en) * | 2017-11-14 | 2018-03-23 | 安徽晨讯智能科技有限公司 | A kind of pipe fitting hoisting structure |
| CN108016712A (en) * | 2017-12-05 | 2018-05-11 | 重庆尚鸿捷精密机械有限公司 | A kind of device and its manufacture method for steel pipe storage positioning |
| CN109202426A (en) * | 2018-09-12 | 2019-01-15 | 广西建工集团第安装有限公司 | A kind of large-scale vertical fixed tube-sheet exchanger scene process equipment for pipe penetration device and technique |
| CN109202426B (en) * | 2018-09-12 | 2023-09-08 | 广西建工集团第一安装工程有限公司 | On-site pipe penetrating tool device and process for large vertical fixed pipe plate type heat exchanger |
| CN110104323A (en) * | 2019-04-25 | 2019-08-09 | 贝滨（广东）科技有限公司 | A kind of assembled tubing |
| CN111332564A (en) * | 2020-03-15 | 2020-06-26 | 河北源泷科技有限公司 | A safe type support for dismantling bundle dress pipe |
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| CN103466212B (en) | 2016-08-10 |
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