CN111843451A - Guide mechanism for automatic pipe penetrating equipment of large heat exchanger - Google Patents
Guide mechanism for automatic pipe penetrating equipment of large heat exchanger Download PDFInfo
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- CN111843451A CN111843451A CN202010835834.XA CN202010835834A CN111843451A CN 111843451 A CN111843451 A CN 111843451A CN 202010835834 A CN202010835834 A CN 202010835834A CN 111843451 A CN111843451 A CN 111843451A
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- heat exchanger
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 230000000712 assembly Effects 0.000 claims abstract description 37
- 238000000429 assembly Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 abstract description 17
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a guide mechanism for automatic pipe penetrating equipment of a large-scale heat exchanger, wherein a cuboid cavity which is communicated up and down is arranged in the guide mechanism, at least two rows of roller assemblies are arranged on the inner wall of the cavity, a guide sleeve is arranged between the adjacent rows of roller assemblies, and the guide sleeve is composed of a guide pipe; each row of roller assemblies consists of two roller groups which are oppositely arranged, the roller groups are divided into two types, namely a driving roller group and a driven roller group, and each roller group consists of a plurality of rollers which are arranged side by side, and the upper and lower positions of the rollers in adjacent rows correspond to each other; the outer circumference of the roller wheel is inwards sunken to form arc-shaped grooves, a gap formed between every two opposite rows of arc-shaped grooves enables the heat exchange tube to just pass through, and the gap and the guide tube in the same vertical plane jointly form a guide channel of the heat exchange tube. The guide mechanism adopts a guide mode of the driving roller set, the driven roller set and the guide sleeve, can keep the heat exchange tube to be flat and stable in displacement in the tube penetrating process, has high guide precision, and effectively avoids the phenomenon that the heat exchange tube collides with a tube plate hole in operation.
Description
Technical Field
The invention relates to the technical field of heat exchanger tube penetrating, in particular to a guide mechanism for automatic tube penetrating equipment of a large heat exchanger.
Background
The tubular heat exchanger is the most typical dividing wall type heat exchanger and has wide industrial application. The tubular heat exchanger mainly comprises a shell, a tube bundle (heat exchange tube), a tube plate and a seal head. In the production and manufacturing of the tube heat exchanger, a process (tube penetrating process) for penetrating a heat exchange tube into a multilayer tube plate is one of several key processes in the whole process flow, and is also the process which consumes the longest time and most easily affects the product quality.
With the upsizing of chemical equipment and power stations, the diameter of a tube plate of the heat exchanger becomes larger and larger, the length of the heat exchanger tube is also longer and longer, and the tube plate with the diameter of 4m-5m and the heat exchanger tube with the length of 5m-8m are common. The large tube plate is characterized by more tube holes, density, small aperture, depth, high requirements on precision and finish degree and very high requirements on a tube penetrating process.
In the existing technical scheme for penetrating the large-scale tubular heat exchanger, the tube is generally transversely penetrated manually, namely, the heat exchanger is horizontally and horizontally arranged on an operation platform, and then the tube is horizontally penetrated. The technical scheme is more suitable for smaller heat exchangers, has the defects of low efficiency, high labor intensity and the like for large heat exchangers (the length of the tube is 5m-8m), and is easy to generate the phenomenon that the heat exchange tube collides with the hole of the tube sheet in the operation due to the fact that the tube sheet is transversely penetrated, so that the product quality is influenced.
Under the condition that a proper place exists, some manufacturers adopt manual vertical through pipes, vertically place the heat exchanger in a pit, and manually utilize tools such as a crane and the like to vertically penetrate the pipes from top to bottom. The manual vertical through pipe also has the defects of low efficiency, high labor intensity and the like; meanwhile, because the manual operation is adopted, the operation quality and efficiency mainly depend on the proficiency and the technical capability of workers; and the phenomenon that the heat exchange tube collides with a tube plate hole can also occur, but the occurrence probability is smaller compared with that of a manual transverse tube.
At present, the automatic tube penetrating equipment basically transversely penetrates tubes, a complex tube penetrating guide mechanism needs to be configured to prevent the heat exchange tubes from colliding with tube plate holes, and the tube penetrating guide mechanism needs to be detached from the tube plates before the subsequent tube expanding process, so that the process is not actually simplified, and the process is complicated.
Disclosure of Invention
The invention aims to provide a guide mechanism for automatic pipe penetrating equipment of a large heat exchanger, which is suitable for vertical pipe penetration, has simple structure and high guide precision, can keep the straightness and stable displacement of a heat exchange pipe in the pipe penetrating process, and effectively avoids the problem that the heat exchange pipe collides with a pipe plate hole in the pipe penetrating operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a guide mechanism for automatic pipe penetrating equipment of a large-scale heat exchanger comprises a body, wherein a cuboid cavity which is communicated up and down is arranged in the body, at least two rows of roller assemblies are arranged on the inner wall of the cavity, a guide sleeve is arranged between the roller assemblies in adjacent rows, and the guide sleeve is composed of a plurality of guide pipes which are vertically arranged and through which heat exchange pipes can penetrate;
each row of the roller assemblies is composed of two roller groups which are oppositely arranged, the roller groups are divided into two types, namely an active roller group and a passive roller group, at least one active roller group is arranged in the body, the rest are passive roller groups, the active roller group and the passive roller groups are composed of a plurality of rollers which have the same size and are arranged side by side, and the axes of the rollers in adjacent rows of the roller assemblies are in the same straight line, and the upper and lower positions of the rollers in adjacent rows of the roller assemblies are corresponding;
the outer circumferences of the rollers are inwards sunken to form arc-shaped grooves, gaps are formed between the arc-shaped grooves of two opposite rollers on each row of roller assemblies to enable the heat exchange tubes to pass through the gaps, the guide tubes are arranged on paths through which the heat exchange tubes pass between adjacent rows of roller assemblies, and the gaps and the guide tubes in the same vertical plane form guide channels of the heat exchange tubes together.
Furthermore, the upper end and the lower end of the chamber are respectively provided with a row of the roller assemblies.
Furthermore, at least one driving roller group is arranged on the roller assembly at the lowest row.
Furthermore, the driving roller group consists of a plurality of driving rollers, a long shaft, a coupler, a speed reduction motor and a motor base, and the driven roller group consists of a plurality of driven rollers.
Furthermore, the arc-shaped grooves of the two opposite rollers on each row of roller assemblies are positioned on a circle with the same diameter and the same center of the cross section of the heat exchange tube when the heat exchange tube passes through.
Furthermore, the axis of the guide tube is on the same plane with the axis of a circle formed by the arc grooves of the two opposite rollers on each row of the roller assemblies.
Furthermore, the guide pipe is of a horn-shaped structure with a large opening at the upper end and a small opening at the lower end.
Furthermore, the body is composed of a first fixing plate and a second fixing plate which are arranged in parallel and a connecting frame for connecting the first fixing plate and the second fixing plate, wherein one roller group of each row of roller assemblies is arranged on the first fixing plate, and the other roller group of each row of roller assemblies is arranged on the second fixing plate.
Furthermore, the distance between adjacent rows of the roller assemblies is less than the length of the heat exchange tube.
Furthermore, a plurality of cuboid cavities which are communicated up and down are arranged in the body, and each cavity is internally provided with a guide channel of the heat exchange tube.
The invention has the beneficial effects that: the guide mechanism is suitable for automatic pipe penetrating operation of the pipe heat exchanger with a large pipe plate (the diameter is 4-5 m) and a long heat exchange pipe (the length is 5-8 m). The guide mode of the driving roller set, the driven roller set and the guide sleeve is adopted, the straightness and the stable displacement of the heat exchange tube can be kept in the tube penetrating process, the guide precision is high, the phenomenon that the heat exchange tube collides with a tube plate hole in the operation can be effectively avoided, and the operation quality is guaranteed. The guide mechanism is applied to automatic pipe penetrating equipment and matched with automatic operation, so that the labor intensity of pipe penetrating operation can be greatly reduced, and the operation efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of a guide mechanism of the present application;
FIG. 2 is a schematic structural view of the lowermost roller assembly of the guide mechanism of the present application;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a state diagram of the guiding mechanism of the present application during the process of pipe penetration of the roller assembly at the lowest row;
FIG. 6 is an enlarged view of portion C of FIG. 5;
FIG. 7 is an internal schematic view of the guide mechanism of the present application;
FIG. 8 is a cross-sectional view of the guide mechanism of the present application;
FIG. 9 is an enlarged view of portion D of FIG. 8;
FIG. 10 is a schematic view of the construction of the passive roller of the present application;
FIG. 11 is a cross-sectional view of a passive roller of the present application;
FIG. 12 is a schematic view of the active roller of the present application;
FIG. 13 is a cross-sectional view of the drive roller of the present application;
wherein: 1-heat exchange tube, 2-first fixing plate, 3-second fixing plate, 4-connecting frame, 5-guide sleeve, 6-guide tube, 7-driving roller set, 8-driven roller set, 9-arc groove, 10-gap, 11-driving roller, 12-long shaft, 13-coupler, 14-speed reducing motor, 15-motor base, 16-driven roller, 17-roller base, 18-driven shaft, 19-bearing, 20-shaft sleeve, 21-roller and 22-transmission key.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific embodiments. This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims.
As shown in fig. 1 to 13, a guide mechanism for an automatic pipe penetrating device of a large heat exchanger comprises a body, wherein the body is composed of a first fixing plate 2 and a second fixing plate 3 which are arranged in parallel and a connecting frame 4 for connecting the first fixing plate 2 and the second fixing plate 3. A cuboid cavity which is communicated up and down is arranged in the body, at least two rows of roller assemblies are arranged on the inner wall of the cavity, and a row of roller assemblies are respectively arranged at the upper end and the lower end of the cavity; as shown in fig. 7-9, the inner wall of the chamber is provided with 3 rows of roller assemblies, which are respectively provided with the upper end, the middle part and the lower end of the chamber, and a plurality of rows of roller assemblies can be arranged according to the length of the heat exchange tube 1 and the needs of the tube penetrating process, so as to ensure the smooth proceeding of the tube penetrating guide.
A guide sleeve 5 is arranged between the adjacent rows of roller components, the guide sleeve 5 is arranged on the first fixing plate 2, and the guide sleeve 5 is composed of a plurality of guide tubes 6 which are vertically arranged and through which the heat exchange tubes 1 can pass.
Each row of roller components is composed of two roller groups which are oppositely arranged, one of the roller groups of each row of roller components is arranged on the first fixing plate 2, and the other roller group of each row of roller components is arranged on the second fixing plate 3.
The roller groups are divided into two types, namely a driving roller group 7 and a driven roller group 8, at least one driving roller group 7 is arranged in the body, the rest driven roller groups 8 are arranged in the body, and at least one driving roller group 7 is arranged on the roller assembly at the lowest row; as one example, as shown in fig. 7-9, the roller assembly at the lowest row is provided with a driving roller set 7, and the other roller sets are driven roller sets 8, and the arrangement mode is as follows: 3 rows of passive roller groups 8 are arranged on the second fixing plate 3, and 2 rows of passive roller groups 8 and 1 row of active roller groups 7 are arranged on the first fixing plate 2. The driving roller group 7, the driven roller group 8 and the guide sleeve 6 form a guide channel of the heat exchange tube. The driving roller group 7 provides auxiliary power for the downward movement of the heat exchange tube 1 under the action of gravity of the heat exchange tube 1.
The driving roller group 7 and the driven roller group 8 are formed by a plurality of rollers which have the same size and are arranged side by side, and the axes of the rollers are on the same straight line, and the rollers on adjacent rows of roller assemblies are in corresponding up-down positions.
The structure of the driving roller group 7 and the driven roller group 8 is as follows: a motor base 15 is arranged on the inner wall of the cavity, a speed reducing motor 14 is arranged on the motor base 15, the driving roller group 7 is formed by connecting a plurality of driving rollers 11 through a long shaft 12, and the driving roller group 7 is connected with the speed reducing motor 14 through a coupler 13; the driven roller group 8 is composed of a plurality of driven rollers 16. The driving roller 11 and the driven roller 16 are disposed on the first fixing plate 2 or the second fixing plate 3. As shown in fig. 10-13, which are schematic structural views of the driving roller 11 and the driven roller 16, the driven roller 16 is composed of a roller seat 17, a driven shaft 18, a bearing 19, a shaft sleeve 20 and a roller 21; the driving roller 11 is composed of a roller seat 17, a bearing 19, a shaft sleeve 20, a transmission key 22 and a roller 21.
The outer circumferences of the rollers are inwards sunken to form arc-shaped grooves 9, a gap 10 formed between the arc-shaped grooves 9 of two opposite rollers on each row of roller assemblies enables the heat exchange tube 1 to just pass through, the guide tubes 6 are arranged on a path through which the heat exchange tube 1 passes between the adjacent rows of roller assemblies, and the gap 10 and the guide tubes 6 in the same vertical plane jointly form a guide channel of the heat exchange tube 1. Under the action force of the gravity of the heat exchange tube 1 and the action force of the driving roller group 7, the heat exchange tube 1 moves downwards and is always kept in a vertical state in the moving process.
The arc grooves 9 of the two opposite rollers of each row of roller assemblies are positioned on a circle which is concentric and has the same diameter as the cross section of the heat exchange tube 1 when the heat exchange tube 1 passes through. Therefore, the heat exchange tube 1 penetrating through the gap 10 is limited in all directions, and the heat exchange tube 1 can keep a vertical state and penetrate through the gap 10 to move downwards.
The axial lead of the guide tube 6 and the axial lead of a circle formed by the arc-shaped grooves 9 of the two opposite rollers on each row of roller assemblies are on the same plane, so that the heat exchange tube 1 passing through the gap 10 between the two opposite rollers can just reach the guide tube 6 and vertically move downwards under the guiding action of the guide tube 6.
The guide tube 6 is of a horn-shaped structure with a large opening at the upper end and a small opening at the lower end, so that the heat exchange tube 1 can enter the guide tube 6 more smoothly.
The distance between the adjacent rows of roller assemblies is smaller than the length of the heat exchange tube 1, so that one end of the heat exchange tube 1 is always kept in the gap 10 in the process of moving downwards in the guide mechanism, the vertical state of the heat exchange tube 1 can be better kept, and the heat exchange tube 1 cannot be deviated left and right in the process of moving downwards.
In addition, as one embodiment, a plurality of cuboid cavities which are communicated up and down can be arranged in the body, or one cavity is divided into a plurality of cavities by partition plates, the cavities are arranged in parallel, and a guide mechanism of the driving roller group 7+ the driven roller group 8+ the guide sleeve 5 is arranged in each cavity.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A guide mechanism for automatic pipe penetrating equipment of a large-scale heat exchanger, which comprises a body,
the method is characterized in that: a cuboid cavity which is communicated up and down is arranged in the body, at least two rows of roller assemblies are arranged on the inner wall of the cavity, a guide sleeve (5) is arranged between the adjacent rows of roller assemblies, and the guide sleeve (5) is composed of a plurality of guide tubes (6) which are vertically arranged and through which the heat exchange tubes (1) can pass;
each row of the roller assemblies consists of two roller groups which are oppositely arranged, the roller groups are divided into a driving roller group (7) and a driven roller group (8), at least one driving roller group (7) is arranged in the body, the rest of the roller groups are driven roller groups (8), the driving roller group (7) and the driven roller groups (8) consist of a plurality of rollers which have the same size and are arranged side by side, the axes of the rollers are on the same straight line, and the rollers in adjacent rows of the roller assemblies correspond to each other in the vertical position;
the outer circumference of each roller is inwards sunken to form an arc-shaped groove (9), a gap (10) formed between the arc-shaped grooves (9) of two opposite rollers on each row of roller assemblies enables the heat exchange tube (1) to just pass through, the guide tubes (6) are arranged between the adjacent rows of roller assemblies on a path through which the heat exchange tube (1) passes, and the gaps (10) and the guide tubes (6) in the same vertical plane jointly form a guide channel of the heat exchange tube (1).
2. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 1, is characterized in that: the upper end and the lower end of the chamber are respectively provided with a row of the roller assemblies.
3. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 2, is characterized in that: the roller component at the lowest row is provided with at least one driving roller group (7).
4. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 1, is characterized in that: the driving roller group (7) is composed of a plurality of driving rollers (11), a long shaft (12), a coupler (13), a speed reducing motor (14) and a motor base (15), and the driven roller group (8) is composed of a plurality of driven rollers (16).
5. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 1, is characterized in that: the arc-shaped grooves (9) of the two opposite rollers on each row of roller assemblies are positioned on a circle with the same diameter and the same center of the cross section of the heat exchange tube (1) when the heat exchange tube (1) passes through.
6. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 5, wherein: the axial lead of the guide pipe (6) and the axial lead of a circle formed by the arc-shaped grooves (9) of the two opposite rollers on each row of the roller assemblies are on the same plane.
7. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 1, is characterized in that: the guide pipe (6) is of a horn-shaped structure with a large opening at the upper end and a small opening at the lower end.
8. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 1, is characterized in that: the body comprises a first fixing plate (2) and a second fixing plate (3) which are arranged in parallel and a connecting frame (4) for connecting the first fixing plate (2) and the second fixing plate (3), wherein one roller group of each row of roller assemblies is arranged on the first fixing plate (2), and the other roller group is arranged on the second fixing plate (3).
9. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 1, is characterized in that: the distance between the adjacent rows of the roller assemblies is less than the length of the heat exchange tube (1).
10. The guide mechanism for the automatic pipe penetrating equipment of the large heat exchanger according to claim 1, is characterized in that: this internal cuboid cavity that link up from top to bottom that is equipped with, every all be equipped with in the cavity the direction passageway of heat exchange tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835834.XA CN111843451B (en) | 2020-08-19 | 2020-08-19 | Guide mechanism for automatic pipe penetrating equipment of large heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835834.XA CN111843451B (en) | 2020-08-19 | 2020-08-19 | Guide mechanism for automatic pipe penetrating equipment of large heat exchanger |
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| Publication Number | Publication Date |
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| CN111843451A true CN111843451A (en) | 2020-10-30 |
| CN111843451B CN111843451B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010835834.XA Active CN111843451B (en) | 2020-08-19 | 2020-08-19 | Guide mechanism for automatic pipe penetrating equipment of large heat exchanger |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773682A (en) * | 2012-08-17 | 2012-11-14 | 中山市奥美森工业有限公司 | Full-automatic pipe penetrating equipment for inserting copper pipes into condenser fins and pipe penetrating technology |
| CN104936720A (en) * | 2013-01-31 | 2015-09-23 | 大金工业株式会社 | Heat transfer tube insertion apparatus |
| CN107953094A (en) * | 2017-11-20 | 2018-04-24 | 山东大学 | Heat exchanger assembles Intubaction device |
| CN110961895A (en) * | 2019-11-20 | 2020-04-07 | 珠海格力电器股份有限公司 | Automatic pipe penetration guide universal device for large-scale multi-hole heat exchanger |
| CN212351028U (en) * | 2020-08-19 | 2021-01-15 | 武汉凯比思电力设备有限公司 | Guide mechanism for automatic pipe penetrating equipment of large heat exchanger |
-
2020
- 2020-08-19 CN CN202010835834.XA patent/CN111843451B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773682A (en) * | 2012-08-17 | 2012-11-14 | 中山市奥美森工业有限公司 | Full-automatic pipe penetrating equipment for inserting copper pipes into condenser fins and pipe penetrating technology |
| CN104936720A (en) * | 2013-01-31 | 2015-09-23 | 大金工业株式会社 | Heat transfer tube insertion apparatus |
| CN107953094A (en) * | 2017-11-20 | 2018-04-24 | 山东大学 | Heat exchanger assembles Intubaction device |
| CN110961895A (en) * | 2019-11-20 | 2020-04-07 | 珠海格力电器股份有限公司 | Automatic pipe penetration guide universal device for large-scale multi-hole heat exchanger |
| CN212351028U (en) * | 2020-08-19 | 2021-01-15 | 武汉凯比思电力设备有限公司 | Guide mechanism for automatic pipe penetrating equipment of large heat exchanger |
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| CN111843451B (en) | 2024-07-09 |
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