CN101947603A - Elastic internal expansion tube expander - Google Patents
Elastic internal expansion tube expander Download PDFInfo
- Publication number
- CN101947603A CN101947603A CN 201010293372 CN201010293372A CN101947603A CN 101947603 A CN101947603 A CN 101947603A CN 201010293372 CN201010293372 CN 201010293372 CN 201010293372 A CN201010293372 A CN 201010293372A CN 101947603 A CN101947603 A CN 101947603A
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- mandrel
- bootstrap block
- locating piece
- sealing ring
- tube expander
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Abstract
The invention discloses an elastic internal expansion tube expander, which comprises a core shaft, wherein the core shaft is a cylinder with a step; the core shaft is provided with an oil inlet, and the oil inlet is communicated with a radial oil outlet; the external circle of the core shaft is matched with a sealing ring; the sealing ring is provided with an oil cavity; the oil cavity is communicated with the oil outlet; and the external circle of the sealing ring is matched with an expansion ring. The tube expander has good sealing effect, is convenient to operate, and is widely applied in the expanded connection process.
Description
Technical field
The present invention relates to a kind of tube expander, relate in particular to a kind of elasticity internal expanding tube expander of high reliability.
Background technology
The inventor had once invented a kind of steel-plastics composite pipe, and the multiple tube of this kind structure need carry out the expanded joint operation to it, generally adopts the hydraulic pressure of high pressure to carry out hydraulic extend pipe.The hydraulic extend pipe method is that the inner surface to pipe applies uniform hydraulic pressure and carries out expander, so can manage contact pressure accurately, can carry out the expander of high reliability.Chinese patent: a kind of double cup type self sealss hydraulic expanding tube device that can implement the hydraulic extend pipe operation is disclosed for No. 91204262.1, it by the head that expands, adjust nut, back pad, front pad, outer bowl, interior bowl and target seeker and form.A front end dress target seeker expands, the rear end connects with high pressure testing pump, the rear end is provided with the centre bore that enters highly pressurised liquid and liquid lead to annular seal space through centre bore radial hole, expand the rim of a bowl that a front-end and back-end also is provided with symmetry towards the interior bowl of annular seal space and outer bowl, the interior bowl and the head that expands are for being fixedly connected, outer bowl is by the adjustment nut location that can adjust its axial internal clearance respectively, and front pad and back pad are located at outer bowl respectively and adjust between the nut.This equipment is full of hydraulic oil in the use annular seal space, and the sealing chamber directly and treat that the inwall of expander contacts, and the also direct and tube wall of hydraulic oil contacts like this, easily tube wall is polluted, and sealing effectiveness is not good.
Summary of the invention
In order to address the above problem, the invention provides a kind ofly be convenient to operate, the elasticity internal expanding tube expander of high reliability.
Technical scheme of the present invention is: a kind of elasticity internal expanding tube expander, comprise mandrel, mandrel is a cylinder with the level, mandrel is provided with fuel feed hole, fuel feed hole is communicated with oil outlet radially, and the cylindrical of mandrel is combined with sealing ring, and sealing ring is provided with oil pocket, oil pocket and oil outlet are communicated with, and seal ring with outer is combined with packing.
As of the present invention a kind of preferred, also include locating piece, locating piece is the cylinder that has double step, and the step of locating piece and the end face of packing cooperate, and another step of locating piece and mandrel cooperate.
As of the present invention a kind of preferred, also comprise bootstrap block, bootstrap block is a cylinder with the level, the step of bootstrap block and the end face of sealing ring cooperate, and the described packing of axial location.
Another is preferred as of the present invention, and mandrel is provided with external screw thread away from an end of described fuel feed hole, and bootstrap block also has internal thread, and the internal thread of bootstrap block is screwed on the external screw thread of described mandrel.
Another is preferred as of the present invention, and mandrel is provided with at least one internal thread hole away from an end of fuel feed hole, and bootstrap block is provided with through hole, and mandrel is connected by bolt with bootstrap block.
Another is preferred as of the present invention, and the material of sealing ring is a rubber, and the material of packing is a polyurethane.
Another is preferred as of the present invention, also is provided with the handle of handled easily on the locating piece.
Hydraulic oil enters through fuel feed hole, and flow to from oil outlet in the oil pocket of sealing ring, and oil pressure is delivered on the wall of sealing ring, reaches packing again, and packing expands because of stressed, so just can play the effect of expander.Two step surfaces owing to locating piece cooperate with an end of mandrel and packing respectively again, the other end of locating piece and packing cooperates, packing is connected with mandrel again, like this from axial compression sealing ring and packing, these several parts have formed effective must the sealing thus, greatly reduce the possibility that hydraulic oil spills from the joint portion of sealing ring and mandrel.
In sum, the present invention has the following advantages:
1, the present invention has adopted the sealing ring that the has cavity transferring elements as pressure, and having designed bootstrap block and locating piece simultaneously is seal member, has good sealing effectiveness;
2, the present invention also designed have excellent toughness and pliability packing as force application part, evenly stressed like this and can not destroy the inwall of pipe;
3, also be provided with handle, handled easily on the locating piece of the present invention.
Description of drawings
The cutaway view of Fig. 1 embodiment 1;
The cutaway view of Fig. 2 embodiment 2;
Fig. 3 adds the schematic diagram that link to each other with pipeline man-hour for the present invention carries out expanded joint.
Among the figure, 1, mandrel; 2, sealing ring; 3, packing; 4, locating piece; 5, bootstrap block; 11, fuel feed hole; 12, oil outlet; 21, oil pocket; 41, handle; 6, oil outlet; 7, pipe; 8, tube wall; 9, pipe end face.
The specific embodiment
The invention will be further described with embodiment below in conjunction with accompanying drawing.
Embodiment one
As shown in Figure 1, a kind of elasticity internal expanding tube expander, comprise mandrel 1, locating piece 4 and bootstrap block 5, mandrel 1 is for having the cylinder of two steps, and mandrel 1 is provided with fuel feed hole 11, and fuel feed hole 11 is communicated with oil outlet 12 radially, cylindrical between 1 two steps of mandrel is combined with rubber seal 2, rubber seal 2 is provided with oil pocket 21, and oil pocket 21 and oil outlet 12 are communicated with, and rubber seal 2 cylindricals are combined with polyurethane packing 3.Locating piece 4 is for having the cylinder of double step, and the step of locating piece 4 and the end face of polyurethane packing 3 cooperate, and another step of locating piece 4 and mandrel 1 cooperate.Also be provided with the handle 41 of handled easily on the locating piece 4.Bootstrap block 5 is a cylinder with the level, and the end face of the step of bootstrap block 5 and rubber seal 2 cooperates, and the described polyurethane packing 3 of axial location.Mandrel 1 is provided with external screw thread away from an end of fuel feed hole 11, and bootstrap block 5 also has internal thread, and the internal thread of bootstrap block 5 is screwed on the external screw thread of mandrel 1.
Embodiment two
As shown in Figure 2, a kind of elasticity internal expanding tube expander, comprise mandrel 1, locating piece 4 and bootstrap block 5, mandrel 1 is for having the cylinder of step, and mandrel 1 is provided with fuel feed hole 11, and fuel feed hole 11 is communicated with oil outlet 12 radially, cylindrical between 1 two steps of mandrel is combined with rubber seal 2, rubber seal 2 is provided with oil pocket 21, and oil pocket 21 and oil outlet 12 are communicated with, and rubber seal 2 cylindricals are combined with polyurethane packing 3.Locating piece 4 is for having the cylinder of double step, and the step of locating piece 4 and the end face of polyurethane packing 3 cooperate, and another step of locating piece 4 and mandrel 1 cooperate.Also be provided with the handle 41 of handled easily on the locating piece 4.Bootstrap block 5 is a cylinder with the level, and the end face of the step of bootstrap block 5 and rubber seal 2 cooperates, and the described polyurethane packing 3 of axial location.Mandrel 1 is provided with 12 uniform internal thread holes of mandrel 1 end face away from an end of fuel feed hole 11, and bootstrap block 5 is provided with corresponding 12 through holes, and through hole passes bolt and internal thread hole is tightened.
Using method of the present invention is as follows:
As shown in Figure 3, after installing according to embodiment 1 and embodiment 2 described structures,, hold handle 41 and mention then at the screw on oil outlet 6 of hydraulic intensifier of fuel feed hole 11, bootstrap block 5 is aimed at the mouth of pipe of pipes 7 it is sent in the pipe, contact until the end face of pipe end face 9 and locating piece 4.The pressure of regulating booster then carries out expand tube processing to preset value, after finishing, closes booster.
In the use of reality, adopt when of the present invention expanded joint easy to operate.And not damage of 3 pairs of tube walls of the packing of polyurethane 8 makes tube wall stressed evenly, and the product strength behind the expanded joint is good.Bootstrap block 5 and locating piece 4 are seal member simultaneously, have good sealing effectiveness.
More than explanation only is an explanation of the invention; make enforcement this programme that those of ordinary skills can be complete; but be not limitation of the present invention; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification, but as long as all are subjected to the protection of Patent Law in claim scope of the present invention.
Claims (7)
1. elasticity internal expanding tube expander, comprise mandrel (1), described mandrel (1) is a cylinder with the level, described mandrel (1) is provided with fuel feed hole (11), described fuel feed hole (11) is communicated with oil outlet (12) radially, it is characterized in that: the cylindrical of described mandrel (1) is combined with sealing ring (2), and described sealing ring (2) is provided with oil pocket (21), described oil pocket (21) and described oil outlet (12) are communicated with, and described sealing ring (2) cylindrical is combined with packing (3).
2. a kind of elasticity internal expanding tube expander according to claim 1, it is characterized in that: also include locating piece (4), described locating piece (4) is for having the cylinder of double step, a step of described locating piece (4) and the end face of described packing (3) cooperate, and another step of described locating piece (4) and described mandrel (1) cooperate.
3. a kind of elasticity internal expanding tube expander according to claim 2, it is characterized in that: also comprise bootstrap block (5), described bootstrap block (5) is a cylinder with the level, and the end face of the step of described bootstrap block (5) and described sealing ring (2) cooperates, and the described packing of axial location (3).
4. a kind of elasticity internal expanding tube expander according to claim 3, it is characterized in that: described mandrel (1) is provided with external screw thread away from an end of described fuel feed hole (11), described bootstrap block (5) also has internal thread, and the internal thread of described bootstrap block (5) is screwed on the external screw thread of described mandrel (1).
5. a kind of elasticity internal expanding tube expander according to claim 3, it is characterized in that: described mandrel (1) is provided with at least one internal thread hole away from an end of described fuel feed hole (11), described bootstrap block (5) is provided with through hole, and described mandrel (1) is connected by bolt with described bootstrap block (5).
6. according to claim 4 or 5 described a kind of elasticity internal expanding tube expanders, it is characterized in that: the material of described sealing ring (2) is a rubber, and the material of described packing (3) is a polyurethane.
7. a kind of elasticity internal expanding tube expander according to claim 6 is characterized in that: the handle (41) that also is provided with handled easily on the described locating piece (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010293372 CN101947603A (en) | 2010-09-27 | 2010-09-27 | Elastic internal expansion tube expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010293372 CN101947603A (en) | 2010-09-27 | 2010-09-27 | Elastic internal expansion tube expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101947603A true CN101947603A (en) | 2011-01-19 |
Family
ID=43451303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010293372 Pending CN101947603A (en) | 2010-09-27 | 2010-09-27 | Elastic internal expansion tube expander |
Country Status (1)
| Country | Link |
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| CN (1) | CN101947603A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182456A (en) * | 2011-12-28 | 2013-07-03 | 北京隆盛泰科石油管科技有限公司 | Diameter expansion head for rounding and diameter expansion of tubular products or for processing of lining composite pipes |
| CN104690173A (en) * | 2014-11-28 | 2015-06-10 | 江苏大学 | Rivetless connection device for inner and outer cylinders of valve |
| CN104772398A (en) * | 2015-03-27 | 2015-07-15 | 鹤山联塑实业发展有限公司 | Method for additionally installing stainless steel bush on steel-plastic composite pipe |
| CN104772899A (en) * | 2015-03-27 | 2015-07-15 | 鹤山联塑实业发展有限公司 | Production apparatus for improving durability of steel plastic composite tube |
| CN104772739A (en) * | 2015-03-27 | 2015-07-15 | 鹤山联塑实业发展有限公司 | Preparation device of steel-plastic composite pipe provided with stainless steel bushing |
| CN105127315A (en) * | 2015-09-14 | 2015-12-09 | 天津二十冶建设有限公司 | Pipe expanding device and pipe expanding method thereof |
| CN112719104A (en) * | 2020-12-02 | 2021-04-30 | 安徽扬天金塑新能源装备股份公司 | Double-station efficient hydraulic pipe expander |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29604723U1 (en) * | 1996-03-14 | 1997-07-17 | Bartels, Hermann A., 63165 Mühlheim | Device for deforming hollow profile workpieces |
| CN101060946A (en) * | 2004-09-21 | 2007-10-24 | 美国罐装食品公司 | Dry hydraulic can shaping |
| CN201257476Y (en) * | 2008-09-11 | 2009-06-17 | 大连合生科技开发有限公司 | Composite tube hydraulic forming device |
| CN101722225A (en) * | 2009-12-08 | 2010-06-09 | 王秀丽 | Novel hydraulic bulging process for tubular parts |
| CN201856378U (en) * | 2010-09-27 | 2011-06-08 | 浙江金洲管道科技股份有限公司 | Elastic inner-expansion tube expander |
-
2010
- 2010-09-27 CN CN 201010293372 patent/CN101947603A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29604723U1 (en) * | 1996-03-14 | 1997-07-17 | Bartels, Hermann A., 63165 Mühlheim | Device for deforming hollow profile workpieces |
| CN101060946A (en) * | 2004-09-21 | 2007-10-24 | 美国罐装食品公司 | Dry hydraulic can shaping |
| CN201257476Y (en) * | 2008-09-11 | 2009-06-17 | 大连合生科技开发有限公司 | Composite tube hydraulic forming device |
| CN101722225A (en) * | 2009-12-08 | 2010-06-09 | 王秀丽 | Novel hydraulic bulging process for tubular parts |
| CN201856378U (en) * | 2010-09-27 | 2011-06-08 | 浙江金洲管道科技股份有限公司 | Elastic inner-expansion tube expander |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182456A (en) * | 2011-12-28 | 2013-07-03 | 北京隆盛泰科石油管科技有限公司 | Diameter expansion head for rounding and diameter expansion of tubular products or for processing of lining composite pipes |
| CN103182456B (en) * | 2011-12-28 | 2016-02-17 | 北京隆盛泰科石油管科技有限公司 | A kind of for tubing full circle expanding or for inner liner compound pipe processing expanding head |
| CN104690173A (en) * | 2014-11-28 | 2015-06-10 | 江苏大学 | Rivetless connection device for inner and outer cylinders of valve |
| CN104772398A (en) * | 2015-03-27 | 2015-07-15 | 鹤山联塑实业发展有限公司 | Method for additionally installing stainless steel bush on steel-plastic composite pipe |
| CN104772899A (en) * | 2015-03-27 | 2015-07-15 | 鹤山联塑实业发展有限公司 | Production apparatus for improving durability of steel plastic composite tube |
| CN104772739A (en) * | 2015-03-27 | 2015-07-15 | 鹤山联塑实业发展有限公司 | Preparation device of steel-plastic composite pipe provided with stainless steel bushing |
| CN105127315A (en) * | 2015-09-14 | 2015-12-09 | 天津二十冶建设有限公司 | Pipe expanding device and pipe expanding method thereof |
| CN112719104A (en) * | 2020-12-02 | 2021-04-30 | 安徽扬天金塑新能源装备股份公司 | Double-station efficient hydraulic pipe expander |
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Application publication date: 20110119 |