CN102248042A - Compound bending method and special intermediate-frequency pipe bender - Google Patents
Compound bending method and special intermediate-frequency pipe bender Download PDFInfo
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- CN102248042A CN102248042A CN2011101458583A CN201110145858A CN102248042A CN 102248042 A CN102248042 A CN 102248042A CN 2011101458583 A CN2011101458583 A CN 2011101458583A CN 201110145858 A CN201110145858 A CN 201110145858A CN 102248042 A CN102248042 A CN 102248042A
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- 238000005452 bending Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 18
- 150000001875 compounds Chemical class 0.000 title abstract 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 19
- 230000033001 locomotion Effects 0.000 claims description 13
- 230000003044 adaptive effect Effects 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 230000003028 elevating effect Effects 0.000 description 11
- 238000000748 compression moulding Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a compound bending method and special intermediate-frequency pipe bender capable of simultaneously deforming a bending section on the X axis, Y axis and Z axis. In the compound bending method, the bending section generates a gradient along the Z axis direction while curvature of the bending section is formed on the XY plane by the intermediate-frequency pipe bender. The intermediate-frequency pipe bender comprises a tumbler rotating with a spindle, a chuck, an intermediate-frequency induction heating coil, a guiding device, a driving device and a transmission structure, wherein the spindle is vertical to the XY plane; the chuck is arranged on the tumbler; the intermediate-frequency induction heating coil is arranged at the side part of the spindle; the guiding device is arranged at the front end of the intermediate-frequency induction heating coil and used for enabling a pipe billet to pass through the intermediate-frequency induction heating coil along the direction parallel to the XY plane; the driving device drives the pipe billet to move; and the transmission structure leads the tumbler to rotate as well as move along the axial direction of the spindle. The compound bending technology adopted by the invention can realize formed deformation of the bending section on the X axis, Y axis and Z axis once without formation by mould pressing, thus saving the manufacturing cost and shortening the manufacturing period.
Description
Technical field
The present invention relates to a kind of forming method and special-purpose medium frequency bending of pipe machine that is mainly used in third generation AP1000 nuclear power plant reactor voltage-stablizer fluctuation pipe, forming technique of the present invention is equally applicable to the manufacturing of other high-quality bend pipes.
Background technology
The total installation of generating capacity of the present nuclear power of China is less than 1,000 ten thousand kilowatts, and delivery is about 2% of national total electricity.Development plan according to National Development and Reform Committee, to the year two thousand twenty, China's nuclear power total installation of generating capacity will reach average level in the world, promptly will account for 16% of national total installed capacity of electricity capacity, just in following 10 years, China also will build up about 100 million kilowatt nuclear power stations.The development type is exactly the newly-designed third generation AP1000 of a US Westinghouse company pressurized-water reactor nuclear power plant.11 AP1000 nuclear power stations year also will be gone up by the U.S. to 2015.
The advanced large-scale AP1000 pressurized-water reactor nuclear power plant of the newly-designed third generation of US Westinghouse company, be at present in the world two generation nuclear power station and two generations add the update type of nuclear power station.Its major advantage have service life from before be increased to 60 years in 40 years, the installed capacity of single seat nuclear power station reaches 1,250,000 kilowatts.The AP1000 of Westinghouse Electric reactor is not also being built unit at present, and China takes the lead in starting this type.The voltage-stablizer fluctuation pipe of this type is designed to the three-D space structure form, and manufacture difficulty is very big, does not also produce this product now in the world.Therefore, study and resolve the manufacturing technology of third generation AP1000 voltage-stablizer fluctuation pipe, meaning is very great.
The AP1000 of Westinghouse Electric reactor voltage-stablizer fluctuation pipe is divided into into 5 sections and makes respectively, and Fig. 1 is the 3rd section a orthographic drawing wherein, and Fig. 2 is the left view of Fig. 1.As shown in Figure 1, bending section 1 is in the bending (promptly the curvature on XY plane 2 is 180 °) that has 180 ° on the XY plane 2, and in addition, as shown in Figure 2, also there is a height difference H in this bending section 1 in Z-direction.Therefore, bending section 1 is actually and has distortion simultaneously on X-axis, Y-axis and three direction of Z axle.
Existing two kinds of methods can be used for moulding bending section 1: a kind of is compression molding at twice, promptly earlier by the curvature of a mold compression molding bending section 1 on XY plane 2, then by the gradient of another set of mould compression molding bending section 1 in Z-direction; Another kind is to combine with compression molding picking the type of making, and promptly earlier by the curvature of existing medium frequency bending of pipe machine moulding bending section 1 on XY plane 2, and then compression molding bending section 1 is in the gradient of Z-direction.Than preceding a kind of method, a kind of method in back can reduce the cost of manufacture of a mold, so have certain cost advantage.Even so, because the still moulding at twice of a kind of method in back, so its manufacturing cost and manufacturing cycle are still higher.
Summary of the invention
The present invention aims to provide and a kind ofly can satisfy the complex bend method that bending section is out of shape simultaneously on X-axis, Y-axis and Z-direction.
When this method adopts the curvature of medium frequency bending of pipe machine moulding bending section on the XY plane, make this bending section produce the gradient simultaneously along Z-direction; This medium frequency bending of pipe machine comprises: a, a pivoted arm with main axis rotation, and this main shaft is perpendicular to the XY plane; B, be arranged at the chuck on the described pivoted arm; C, be positioned at the Frequency Induction Heating circle of main shaft sidepiece; D, be positioned at this Frequency Induction Heating circle front end and be used to make pipe with the direction that is parallel to the XY plane guider by the Frequency Induction Heating circle; The drive unit of e, the motion of promotion pipe; F, make described pivoted arm drive mechanism along the main shaft axially-movable when rotating.
Obviously, make pivoted arm when rotating along the main shaft axially-movable, can realize by multiple means, such as: main shaft can be installed on the elevating mechanism and by bearing pivoted arm is connected with main shaft, this moment, pivoted arm both can pass through the relative main axis rotation of bearing, can drive the pivoted arm axially-movable through main shaft by elevating mechanism again.Perhaps, also pivoted arm and main shaft rigid attachment can be installed to pivoted arm on the elevating mechanism by bearing again, so both can main shaft be rotated together with pivoted arm, can drive the pivoted arm axially-movable through main shaft by elevating mechanism again by bearing.
And the present invention realizes that pivoted arm optimal way along the main shaft axially-movable when rotating is: make between described pivoted arm and the main shaft by adaptive mutually helicla flute to form when pivoted arm during around main axis rotation the worm drive structure of this pivoted arm axially-movable on main shaft.The advantage of this mode is, need not elevating mechanism and just can make pivoted arm axially-movable voluntarily when rotating pivoted arm, can either guarantee two kinds of synchronisms between motion, has also omitted complicated transmission device.
The gradient of bending section on Z-direction may be fixed, and also may change.If the gradient of bending section on Z-direction fixed, then can realize along the axial uniform motion of main shaft by making pivoted arm.At this moment, as long as helicla flute mutual adaptive on pivoted arm and the main shaft is designed to common constant pitch screw rod (being that pitch, groove width and groove depth are consistent), promote the pipe uniform motion simultaneously, then pivoted arm also will be along the axial uniform motion of main shaft when main shaft at the uniform velocity rotates.If the gradient of bending section on Z-direction changes, can be a screw rod that the gradient of this bending section on Z-direction changed by designing requirement then, thereby control pivoted arm axially-movable instantaneous velocity along main shaft when rotating being used for carrying out the adaptive partial design of spiral on the described main shaft with pivoted arm.
Such as, when bending section be by the last period be zero circular arc and back one section when having on Z-direction that fixedly the circular arc of the gradient constitutes in the gradient on the Z-direction, can with crooked the last period during circular arc on the main shaft corresponding helicla flute be designed to one section form of only extending around main shaft in the horizontal direction, and during with the back one section circular arc of bending on the main shaft corresponding helicla flute be designed to common spiral form, thereby realize that pivoted arm is only done pure rotation when bending circular arc the last period, and just when beginning the starting point of crooked back one section circular arc, pivoted arm begins same constantly along the axially-movable of main shaft what rotate again.Obviously, according to the slope change of bending section on Z-direction, the helicla flute form on the screw rod can be carried out respective design.
Certainly, realize the control of tumbler shaft to movement velocity, be not a kind of mode that can only take main shaft is designed to screw rod.Also have other feasible patterns, such as, driving under the situation of pivoted arm axially-movable through main shaft by elevating mechanism, the movement velocity that the special control device of a cover is controlled elevating mechanism can be set, realize the speed change lifting.
The present invention also provides a kind of medium frequency bending of pipe machine that is used for said method, and this medium frequency bending of pipe machine comprises: a, a pivoted arm with main axis rotation, and this main shaft is perpendicular to the XY plane; B, be arranged at the chuck on the described pivoted arm; C, be positioned at the Frequency Induction Heating circle of main shaft sidepiece; D, be positioned at this Frequency Induction Heating circle front end and be used to make pipe with the direction that is parallel to the XY plane guider by the Frequency Induction Heating circle; The drive unit of e, the motion of promotion pipe; F, make described pivoted arm drive mechanism along the main shaft axially-movable when rotating.
The preferred following mode of this medium frequency bending of pipe machine realize pivoted arm when rotating along the main shaft axially-movable: form when pivoted arm during the worm drive structure of this pivoted arm axially-movable on main shaft between described pivoted arm and the main shaft around main axis rotation by adaptive mutually helicla flute.If the gradient of bending section on Z-direction changes, being used on the then described main shaft carrying out the adaptive part of spiral with pivoted arm is a screw rod that the gradient of this bending section on Z-direction changed by designing requirement.
This medium frequency bending of pipe machine also can comprise: g, be used to control pivoted arm control device along the axially-movable speed of main shaft when rotating.
The invention has the beneficial effects as follows: complex bend technology provided by the present invention can be out of shape on X-axis, Y-axis and Z-direction by disposable moulding bending section, need not again by the press moulding mode moulding, saved manufacturing cost, shorten the manufacturing cycle, effectively solved the manufacturing difficult problem of third generation AP1000 voltage-stablizer fluctuation pipe.
Description of drawings
Fig. 1 is the orthographic drawing of the 3rd section of the AP1000 of Westinghouse Electric reactor voltage-stablizer fluctuation pipe.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the user mode schematic diagram of medium frequency bending of pipe machine of the present invention.
Fig. 4 be among Fig. 3 A-A to cutaway view.
Be labeled as among the figure: bending section 1, XY plane 2, YZ plane 3, XZ plane 4, push pedal 5, pipe 6, guide roller 7, Frequency Induction Heating circle 8, chuck 9, pivoted arm 10, main shaft 11, direction of advance 12, descent direction 13, base 14.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2 and shown in Figure 3, push pedal 5 in the drive unit promotes pipe 6 and moves along direction of advance 12 (being positioned on the XY plane 2), pipe 6 by the guide roller 7 that is positioned at Frequency Induction Heating circle 8 front ends after again through Frequency Induction Heating circle 8 heating, the direction of motion of the pipe 6 after the heating is subjected to the restriction of chuck 9, thereby drive pivoted arm 10 around main shaft 11 rotations, form the curvature of bending section 1 on XY plane 2 gradually; Meanwhile, pivoted arm 10 is also along descent direction 13 (Z-direction) motion vertical with XY plane 2, thereby the gradient that bending section 1 is produced along Z-direction makes bending section 1 after the moulding have as shown in Figure 2 tilt quantity H.Obviously, the stroke of pivoted arm 10 on descent direction 13 promptly equals the tilt quantity H shown in Fig. 2.
Embodiment 1
As shown in Figure 4, between described pivoted arm 10 and the main shaft 11 by mutually adaptive helicla flute form when pivoted arm 10 when main shaft 11 rotates, the worm drive structure of this pivoted arm 10 axially-movable on main shaft 11.Therefore, this embodiment need not elevating mechanism just can descend pivoted arm 10 when rotating pivoted arm 10 voluntarily, can either guarantee two kinds of synchronisms between motion, has also omitted complicated transmission device.Suppose the original state when state shown in Figure 4 is pivoted arm 10 rotations, because the curvature of bending section 1 on XY plane 2 is 180 °, so the distance H that indicates among Fig. 4 equals the tilt quantity H shown in Fig. 2.
Described main shaft 11 is installed on the elevating mechanism and by bearing pivoted arm 10 is connected with main shaft 11, and pivoted arm 10 both can drive pivoted arm through main shaft 11 by elevating mechanism again and move along Z-direction by relative main shaft 11 rotations of bearing this moment.After push pedal 5 began action, elevating mechanism drove pivoted arm 10 and descends through triggering, and the speed of its decline is controlled by a control device.
If bending section 1 be by the last period be zero circular arc and back one section when having on Z-direction that 2.5 ° fixedly the circular arc of the gradient constitutes in the gradient on the Z-direction, then will crooked the last period during circular arc on the main shaft corresponding helicla flute be designed to one section form of only extending around main shaft in the horizontal direction, and during with the back one section circular arc of bending on the main shaft corresponding helicla flute be designed to common spiral form, thereby realize that pivoted arm 10 is only done pure rotation when bending circular arc the last period, and when pivoted arm 10 just rotated to the starting point of the crooked back one section circular arc of beginning, pivoted arm 10 began same constantly along the axially-movable of main shaft what rotate again.Therefore, be used for carrying out the adaptive partial design of spiral on the main shaft 11 and become a screw rod that the gradient of this bending section 1 on Z-direction changed by designing requirement with pivoted arm 10.
If the gradient of bending section 1 on Z-direction changes, then on the basis of embodiment 2, by control device the instantaneous fall off rate of pivoted arm 10 is regulated, thereby the gradient of described bending section 1 on Z-direction changed by designing requirement by control pivoted arm 10 axially-movable speed along main shaft 11 when rotating.
Claims (8)
1. complex bend method is characterized in that: when adopting the curvature of medium frequency bending of pipe machine moulding bending section (1) on XY plane (2), make this bending section (1) produce the gradient along Z-direction simultaneously; This medium frequency bending of pipe machine comprises: a, a pivoted arm (10) with main shaft (11) rotation, and this main shaft (11) is perpendicular to XY plane (2); B, be arranged at the chuck (9) on the described pivoted arm (10); C, be positioned at the Frequency Induction Heating circle (8) of main shaft (11) sidepiece; D, be positioned at this Frequency Induction Heating circle (8) front end and be used to make pipe (6) with the direction that is parallel to XY plane (2) guider by Frequency Induction Heating circle (8); The drive unit of e, promotion pipe (6) motion; F, make described pivoted arm (10) drive mechanism along main shaft (11) axially-movable when rotating.
2. complex bend method as claimed in claim 1, it is characterized in that: between described pivoted arm (10) and the main shaft (11) by mutually adaptive helicla flute form when pivoted arm (10) when main shaft (11) rotates, the worm drive structure of this pivoted arm (10) axially-movable on main shaft (11).
3. complex bend method as claimed in claim 1 or 2 is characterized in that: by control pivoted arm (10) axially-movable speed along main shaft (11) when rotating, thereby the gradient of described bending section (1) on Z-direction changed by designing requirement.
4. complex bend method as claimed in claim 3 is characterized in that: being used on the described main shaft (11) carrying out the adaptive part of spiral with pivoted arm (10) is a screw rod that the gradient of this bending section (1) on Z-direction changed by designing requirement.
5. be used for the medium frequency bending of pipe machine of said method, comprise: a, a pivoted arm (10) with main shaft (11) rotation, this main shaft (11) is perpendicular to XY plane (2); B, be arranged at the chuck (9) on the described pivoted arm (10); C, be positioned at the Frequency Induction Heating circle (8) of main shaft (11) sidepiece; D, be positioned at this Frequency Induction Heating circle (8) front end and be used to make pipe (6) with the direction that is parallel to XY plane (2) guider by Frequency Induction Heating circle (8); The drive unit of e, promotion pipe (6) motion; F, make described pivoted arm (10) drive mechanism along main shaft (11) axially-movable when rotating.
6. medium frequency bending of pipe machine as claimed in claim 5, it is characterized in that: between described pivoted arm (10) and the main shaft (11) by mutually adaptive helicla flute form when pivoted arm (10) when main shaft (11) rotates, the worm drive structure of this pivoted arm (10) axially-movable on main shaft (11).
7. medium frequency bending of pipe machine as claimed in claim 6 is characterized in that: being used on the described main shaft (11) carrying out the adaptive part of spiral with pivoted arm (10) is a screw rod that the gradient of this bending section (1) on Z-direction changed by designing requirement.
8. medium frequency bending of pipe machine as claimed in claim 5 is characterized in that: this medium frequency bending of pipe machine also comprises: g, a cover are used to control pivoted arm (10) control device along the axially-movable speed of main shaft (11) when rotating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110145858.3A CN102248042B (en) | 2011-06-01 | 2011-06-01 | Compound bending method and special intermediate-frequency pipe bender |
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| CN201110145858.3A CN102248042B (en) | 2011-06-01 | 2011-06-01 | Compound bending method and special intermediate-frequency pipe bender |
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| CN102248042B CN102248042B (en) | 2014-04-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716949A (en) * | 2012-02-28 | 2012-10-10 | 江阴中南重工股份有限公司 | Large-caliber pipe bending machine |
| CN104070095A (en) * | 2014-06-24 | 2014-10-01 | 梁淑慧 | Pipe-bending machine |
| CN104690117A (en) * | 2015-03-27 | 2015-06-10 | 华电重工股份有限公司 | Ultralarge-radius bend and manufacturing method thereof of large-diameter thick-wall steel pipe |
| CN104759500A (en) * | 2015-04-27 | 2015-07-08 | 岳阳筑盛阀门管道有限责任公司 | Method and system for cold bending of nuclear power surge pipe |
| CN105127200A (en) * | 2015-09-29 | 2015-12-09 | 中国钢研科技集团有限公司 | Manufacturing method for pressurizer surge line of nuclear power plant |
| CN105396910A (en) * | 2015-12-16 | 2016-03-16 | 昆明理工大学 | Tension control device |
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| CN202114111U (en) * | 2011-06-01 | 2012-01-18 | 二重集团（德阳）重型装备股份有限公司 | Medium-frequency pipe bender capable of achieving complex bend |
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2011
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716949A (en) * | 2012-02-28 | 2012-10-10 | 江阴中南重工股份有限公司 | Large-caliber pipe bending machine |
| CN104070095A (en) * | 2014-06-24 | 2014-10-01 | 梁淑慧 | Pipe-bending machine |
| CN104690117A (en) * | 2015-03-27 | 2015-06-10 | 华电重工股份有限公司 | Ultralarge-radius bend and manufacturing method thereof of large-diameter thick-wall steel pipe |
| CN104759500A (en) * | 2015-04-27 | 2015-07-08 | 岳阳筑盛阀门管道有限责任公司 | Method and system for cold bending of nuclear power surge pipe |
| CN105127200A (en) * | 2015-09-29 | 2015-12-09 | 中国钢研科技集团有限公司 | Manufacturing method for pressurizer surge line of nuclear power plant |
| CN105396910A (en) * | 2015-12-16 | 2016-03-16 | 昆明理工大学 | Tension control device |
| CN105396910B (en) * | 2015-12-16 | 2017-05-10 | 昆明理工大学 | Tension control device |
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| Publication number | Publication date |
|---|---|
| CN102248042B (en) | 2014-04-30 |
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Effective date of registration: 20180322 Address after: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee after: Double (Deyang) heavy equipment Co., Ltd. Address before: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee before: Erzhong Group (Deyang) Heavy Equipment Co., Ltd. |