CN205341695U - Pipe expander - Google Patents
Pipe expander Download PDFInfo
- Publication number
- CN205341695U CN205341695U CN201520940498.XU CN201520940498U CN205341695U CN 205341695 U CN205341695 U CN 205341695U CN 201520940498 U CN201520940498 U CN 201520940498U CN 205341695 U CN205341695 U CN 205341695U
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- CN
- China
- Prior art keywords
- pearl
- swollen
- shell
- steel wire
- tube
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a pipe expander, including expander roll, the shell that expands, bloated pearl and positioner, expand the shell dress on the expander roll, be equipped with the pearl groove of expanding on the bloated shell, bloated pearl is installed at the bloated pearl inslot of shell that expands, the positioner suit in on expanding the shell, be provided with the fixation with steel wire circle respectively on the left side and the right side in the pearl groove of expanding, and this fixation with steel wire circle comprises the steel wire, both ends all are connected with the fixation with steel wire circle about bloated pearl. The utility model discloses the diameter volume that expands when the expand tube is big, and the expand tube effect all can be guaranteed with the condition that warping appears in tube sheet welding back to the expanded joint that warp some pipes and pipe, and the expand phenomenon of the big pearl that also can not appear falling to expand of output.
Description
Technical field
This utility model relates to swage technique field, particularly to a kind of tube expander.
Background technology
When producing refrigeration plant and heat transmission equipment, the connection between cooling tube and tube sheet needs to use tube expander.Utilizing tube expander, the internal-and external diameter of enlarged pipe, so that combining closely in tube-to-tube sheet connection contact site, to realize the expanded joint of pipe and tube sheet.Existing common tube expander, the expansion tube process that some are special is not competent, as pipe has moderate finite deformation, after tube-to-tube sheet connection welding, deformation occurs.Pipe after deformation, general tube expander just cannot put in pipe so that pipe to be dilated, even if swollen shell external diameter reduces can put in expanded joint, swollen pearl also simply falls out, and tube expander reduces service life.And, some pipe expansion diameters are very big, and common tube expander can not realize.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is in that to provide a kind of tube expander, and this tube expander can solve the problem that the deformation expanded joint of pipe and the expansion tube process problem of expansion diametric requirements increasing.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, this utility model is achieved through the following technical solutions: a kind of tube expander, including expander roll, swollen shell, swollen pearl and positioner, described swollen valve jacket is contained on expander roll, described swollen shell is provided with swollen pearl groove, described swollen pearl is arranged in the swollen pearl groove of swollen shell, described positioner is set on described swollen shell, it is respectively arranged with fixation with steel wire circle in the left side of swollen pearl groove and right side, this fixation with steel wire circle is made up of steel wire, and the two ends, left and right of described swollen pearl are all connected with fixation with steel wire circle.
Further, it is provided with thrust bearing between described positioner and described swollen shell.
The beneficial effects of the utility model are: be provided with the fixation with steel wire circle being made up of steel wire in tube expander of the present utility model, thus the swollen pearl on swollen shell is positioned by fixation with steel wire circle, when tube expansion, swollen pearl outwards can dilate together with steel wire, after deswelling, fixation with steel wire circle can drive again swollen pearl to return to original position, even if thus the diameter of swollen shell reduces, without the phenomenon occurring that swollen pearl drops out, it is ensured that tube expansion effect.This diameter can do little swollen shell, and the diameter amount of expansion is big, occurs that the situation of deformation all can ensure tube expansion effect to after the expanded joint of some pipe deformations and tube-to-tube sheet connection welding, and expansion amount is greatly without the phenomenon occurring swollen pearl.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus protection domain of the present utility model being made apparent clear and definite defining.
As shown in Figure 1, a kind of tube expander, including expander roll 1, swollen shell 2, swollen pearl 3 and positioner 4, described swollen shell 2 is sleeved on expander roll 1, and described swollen shell 2 is provided with swollen pearl groove, and described swollen pearl 3 is arranged in the swollen pearl groove of swollen shell 2, described positioner 4 is set on described swollen shell 2, being respectively arranged with fixation with steel wire circle 5 in the left side of swollen pearl groove and right side, this fixation with steel wire circle 5 is made up of steel wire, and the two ends, left and right of described swollen pearl 3 are all connected with fixation with steel wire circle 5.
Furtherly, it is provided with thrust bearing 6 between described positioner 4 and described swollen shell 2.
In use, tube expander is stretched into and treats swollen pipe 8, and had good positioning by positioner 4.Electric tool drives expander roll 1 to rotate, and due to the effect of the conical surface of expander roll 1, in the process that expander roll 1 screws in, swollen pearl 3 is to radial direction expansion so that the internal-and external diameter of pipe 8 expands required size to, it is achieved the tight expanded joint of pipe 8 and tube sheet 7.In the process of tube expansion, swollen pearl 3 outwards can dilate together with the steel wire of fixation with steel wire circle 5, and after deswelling, fixation with steel wire circle 5 can drive again swollen pearl 3 to return to original position, even if thus the diameter of swollen shell 2 reduces, without the phenomenon occurring that swollen pearl drops out, it is ensured that tube expansion effect.The diameter of the swollen shell 2 of this tube expander is little, and when tube expansion, the diameter amount of expansion is big, occurs that the situation of deformation all can ensure tube expansion effect to after the expanded joint of some pipe deformations and tube-to-tube sheet connection welding, and expansion amount is greatly without the phenomenon occurring swollen pearl.It addition, even if burr or electric welding deformation occurs in opening part, this tube expander also can realize good expanded joint.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in scope of patent protection of the present utility model.
Claims (2)
1. a tube expander, it is characterized in that: include expander roll, swollen shell, swollen pearl and positioner, described swollen valve jacket is contained on expander roll, described swollen shell is provided with swollen pearl groove, described swollen pearl is arranged in the swollen pearl groove of swollen shell, and described positioner is set on described swollen shell, is respectively arranged with fixation with steel wire circle in the left side of swollen pearl groove and right side, this fixation with steel wire circle is made up of steel wire, and the two ends, left and right of described swollen pearl are all connected with fixation with steel wire circle.
2. tube expander according to claim 1, it is characterised in that: it is provided with thrust bearing between described positioner and described swollen shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940498.XU CN205341695U (en) | 2015-11-23 | 2015-11-23 | Pipe expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940498.XU CN205341695U (en) | 2015-11-23 | 2015-11-23 | Pipe expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205341695U true CN205341695U (en) | 2016-06-29 |
Family
ID=56167524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520940498.XU Expired - Fee Related CN205341695U (en) | 2015-11-23 | 2015-11-23 | Pipe expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205341695U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695668A (en) * | 2016-12-05 | 2017-05-24 | 无锡化工装备股份有限公司 | Special tool for U-shaped tube penetrating |
| CN108372251A (en) * | 2018-04-24 | 2018-08-07 | 三河科达实业有限公司 | Spinning electric tube expander |
| CN108500172A (en) * | 2018-03-06 | 2018-09-07 | 珠海格力电器股份有限公司 | Expansion joint system and expansion joint method |
-
2015
- 2015-11-23 CN CN201520940498.XU patent/CN205341695U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695668A (en) * | 2016-12-05 | 2017-05-24 | 无锡化工装备股份有限公司 | Special tool for U-shaped tube penetrating |
| CN108500172A (en) * | 2018-03-06 | 2018-09-07 | 珠海格力电器股份有限公司 | Expansion joint system and expansion joint method |
| CN108500172B (en) * | 2018-03-06 | 2023-10-10 | 珠海格力电器股份有限公司 | Expansion joint system and expansion joint method |
| CN108372251A (en) * | 2018-04-24 | 2018-08-07 | 三河科达实业有限公司 | Spinning electric tube expander |
| CN108372251B (en) * | 2018-04-24 | 2024-04-23 | 三河科达实业有限公司 | Spinning tube expander |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20191123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |