CN201432027Y - Cooling water pipe bending mould for cooling wall of blast furnace - Google Patents
Cooling water pipe bending mould for cooling wall of blast furnace Download PDFInfo
- Publication number
- CN201432027Y CN201432027Y CN2009201035642U CN200920103564U CN201432027Y CN 201432027 Y CN201432027 Y CN 201432027Y CN 2009201035642 U CN2009201035642 U CN 2009201035642U CN 200920103564 U CN200920103564 U CN 200920103564U CN 201432027 Y CN201432027 Y CN 201432027Y
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- pipe
- roller
- blast furnace
- bent
- cooling water
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Abstract
The utility model belongs to the technical field of mould machinery, discloses a cooling water pipe bending mould for the cooling wall of a blast furnace, and adopts the following technical scheme: the mould comprises a guide roller, a pinch roller, a drawer roller and a pipe clamping mechanism, wherein the guide roller, the pinch roller and the drawer roller are used for controlling a pipe to bebent; the pipe clamping mechanism is fixed on the drawer roller; the axial section of the roller groove of the pinch roller is designed into the shape of a duck egg, which meets the parabolic equation: Y= (2.0 minus 2.5)/D * X<2> (Y is the groove depth coordinate of the duck egg-shaped curve, and X is the groove width coordinate thereof); the parabola intersects with the roller groove in the widthdirection to form a roller groove section; D is the caliber of the bent pipe; and the width of the roller groove is the difference between the caliber D of the bent pipe and 0.1 mm. By utilizing thepinch roller with the structure to manufacture the bent part of the cooling water pipe of the cooling wall of the blast furnace, not only is the reduction of the excircle of the bent part reduced, butalso the flow of the pipe inner wall towards the pinch roller direction in the stretching process is reduced, therefore, the occurrence of a D-shaped inner wall is effectively avoided. The through ball rate of the cooling water pipe of the cooling wall of the blast furnace can be up to 86%.
Description
Technical field
The utility model belongs to the mould field of mechanical technique, relates in particular to a kind of bend pipe mould of making blast furnace cooling wall cooling water pipe.
Background technology
Need to be provided with cooling wall in the furnace wall of blast furnace.Cooling wall is to be made of rectangle fragment of brick and the water pipe that is cast into the bending of its inside.During cooling, realize by in water pipe, injecting cooling water.Cooling effect then be by the length of water pipe, can be by water pipe the size of water flow velocity and the length decision in service life of water pipe.Dish places the length of rectangle fragment of brick water pipe long more, the effect of the long more then cooling in service life of the flow velocity by water pipe water big more (resistance to water-flow is just more little) and water pipe is then good more, otherwise can be relatively poor.
At present, the bending (as shown in Figure 1) of cooling water pipe, promptly cooling water pipe on the bending machine by by directive wheel 1, contact roller 2 and traction wheel 3 and be fixed in the bend pipe mould that the card pipe mechanism 4 on the traction wheel constitutes and process.In the process of bending, will be clamped on the bend pipe mould by bend pipe 5, promptly under the traction of traction wheel 3, pipe rotates with traction wheel, and contact roller 2 and card pipe mechanism 4 go for a stroll pipe on traction wheel, forward the angle that needs to and get final product.
Above-mentioned bend pipe mould, the race radial section of contact roller and traction wheel are designed to the identical semicircular structure of pipe section that fundamental sum is bent.Pipe is (as shown in Figure 2) when bending, and the cross section can form ellipsoidal structure in the pipe in its knee, and promptly pipe is when bend tension, the half tube wall face 6 that is adjacent to contact roller 2 is stretched, wall thickness reduction, the half tube wall face 7 that is adjacent to traction wheel 3 is compressed, the wall thickness thickening; Because the race of traction wheel and the outer wall of pipe are essentially identical semi circular surfaces, so wall thickness can only be thickeied to tube inner wall, its effect is that the interior cross section of crooked position leaned on the stretching face of traction wheel almost to flatten after pipe stretched; That is to say that its internal diameter 8 of the knee of pipe is " D " type structure.The big or small index of detection by the water flow velocity of water pipe is to decide by the size that detects the pipe through ball rate, and generally the through ball rate maximum that is cast into the inner formed cooling wall of rectangle fragment of brick through the curved intake pipe of above-mentioned bend pipe mould preparation can only reach 81.5%; Secondly, after the half tube wall face that is adjacent to contact roller was stretched, its wall thickness reduction was more than 15%; The intensity of this lightening holes and corrosion resistant performance reduce, and will significantly reduce the service life of pipe, just significantly reduce the life-span of cooling wall.The tube wall reduction is more little, and the life-span of cooling wall is high more.
The utility model content
The purpose of this utility model just provides the blast furnace cooling stave cooling water pipe bending mould of the little and long service life of a kind of resistance to water-flow.
For achieving the above object, the technical scheme that the utility model adopted is:
A kind of blast furnace cooling stave cooling water pipe bending mould, its structure comprises and is used to control directive wheel, contact roller and the traction wheel that is bent pipe and is fixed in card pipe mechanism on the traction wheel, the race axial section of described contact roller is shaped as an approximate duck's egg type shape structure, and wherein taking turns groove width B is that the caliber that is bent pipe subtracts 0.1mm.
Its additional technical feature also comprises:
---described duck's egg type shape curvilinear structures satisfies parabolic equation:
Y＝(2.0-2.5)/D*X
2
Design, parabola intersects formation wheel grooved profile with the wheel well width; Wherein D is the caliber that is bent pipe, and the wheel groove width is that the caliber D that is bent pipe subtracts 0.1mm; Wherein Y is groove depth coordinate, the X groove width coordinate of duck's egg type shape curve;
---the structure of the race axial section of described traction wheel is to be bent the semi-circular shape of pipe radius formation and is that the caliber that is bent pipe reduces the trapezoidal combination structure that 0.2mm constitutes for 2mm, length highly; Be that groove depth adds 2mm for being bent the pipe radius.
---the structure of the race axial section of described directive wheel is: it takes turns the radius that groove radius equals to be bent pipe, and the radius that groove depth equals to be bent pipe subtracts the 1mm shape.
A kind of blast furnace cooling stave cooling water pipe bending mould provided by the utility model, beneficial effect compared with prior art is: cooling water pipe is when bending, form an oval between traction wheel and the contact roller, because contact roller is a parabolic shape, promptly take turns trench bottom less than tube outer diameter and darker, the tube wall of this part shifts to an earlier date pressurized projection when bending beginning, for certain surplus has been prepared in stretching subsequently, bending subsequently is stretched this part, and this bossing constantly is pulled to and the tube outer diameter basically identical.Like this, not only reduced the attenuate of sweep cylindrical, also reduced in drawing process tube wall, effectively avoided the appearance of " D " shape inwall to the flowing of traction wheel direction.Pipe after so not only having guaranteed to bend is round at the external diameter of sweep substantially, and the internal diameter of pipe also approaches circle substantially, both reduced the attenuate of pipe, increased the through ball rate of pipe again, simultaneously because the wall thickness of tube wall is even, so prolonged its service life.The groove width of directive wheel is identical with pipe, and groove depth reduces corresponding resistance less than pipe radius 1mm, and pipe can steadily be slided in groove.
Use the crooked cooling water pipe of the utility model, when bending radius was 1.67 times of pipe diameter, the wall thickness reduction of pipe was below 11.16%, and through ball rate reaches 85%, and when bending radius was 2 times of pipe diameters, through ball rate reached more than 86%, and reduction is less than 6%.
Description of drawings
Fig. 1 is the structural representation of bend pipe mould;
The cross-sectional view of the crooked pipe of the existing bend pipe mould of Fig. 2;
Fig. 3 is a contact roller diameter of axle cross-sectional view;
Fig. 4 is for being traction wheel axial section structural representation;
Fig. 5 is that guide wheel shaft is to cross-sectional view.
The specific embodiment
The structure of a kind of blast furnace cooling stave cooling water pipe bending mould that the utility model is provided below in conjunction with accompanying drawing is described in further details.
As shown in Figure 1, the structural representation of a kind of blast furnace cooling stave cooling water pipe bending mould that provides for the utility model.Cooling water pipe 5 processes by the bend pipe mould that is made of directive wheel 1, contact roller 2 and traction wheel 3 and card pipe mechanism 4 on bending machine.Wherein constitute blast furnace cooling stave cooling water pipe bending mould
Contact roller: its axial cross section structure (as shown in Figure 3) is directly half duck's egg type structure of shape for the camber line 9 of both sides inwall, and its shape should satisfy Y=(2.0-2.5)/D*X more precisely
2The parabolic curve design of (wherein Y is the coordinate of the groove depth H of duck's egg type shape curve, the coordinate of X groove width B), parabola and race width B intersect to constitute takes turns grooved profile; Wherein D is the caliber that is bent pipe, it is fixed that selection between the coefficient 2.0-2.5 in the parabolic equation is come by the size of the caliber D that is bent pipe, 2.0-2.5 be suitable for bending diameter (also being external diameter of pipe) at 30 millimeters---the cooling water pipe between 80 millimeters: when the diameter of the pipe that bends is between the 30---50 millimeter, because its diameter is less, then coefficient is chosen between the 2.0-2.2; When the diameter of the pipe that bends was between the 50---80 millimeter, because its diameter is bigger, then coefficient was chosen between the 2.2-2.5 proper: wheel groove width B is that the caliber D that is bent pipe subtracts 0.1mm.
The external diameter of this contact roller and aperture are according to the diameter and the bending machine design of institute's bend pipe.
Traction wheel: its shaft section structure (as shown in Figure 4) is to be bent the semi-circular shape of pipe radius formation and is that the caliber that is bent pipe reduces the trapezoidal combination structure that 0.2mm constitutes for 2mm, length highly;
Be that the size of each several part should satisfy and is radius R=D/2; Opening groove width B2=D-0.2mm; Groove depth H2=D/2+2mm;
The external diameter of traction wheel and aperture are according to the diameter and the bending machine design of institute's bend pipe.
Directive wheel: its cross-sectional view as shown in Figure 5, it takes turns radius R=D/2 that groove radius equals to be bent pipe, the radius that groove depth equals to be bent pipe subtracts the 1mm shape.
The external diameter of directive wheel and aperture are according to the diameter and the bending machine design of institute's bend pipe.
Cooling water pipe is when bending, race between traction wheel and the contact roller forms an oval, the wheel trench bottom R1 minimum of contact roller, traction race maximum is also than the little 0.2mm of pipe diameter (anti-deformation), and the groove depth of contact roller is greater than pipe diameter, when beginning to bend, pipe is to contact roller trench bottom projection, for certain surplus has been prepared in stretching subsequently, this part of bending subsequently is stretched, and this bossing constantly is pulled to and the tube outer diameter basically identical.Like this, not only reduced the attenuate of sweep cylindrical, also reduced in drawing process tube wall, effectively avoided the appearance of " D " shape inwall to the flowing of traction wheel direction.
Claims (4)
1, a kind of blast furnace cooling stave cooling water pipe bending mould, its structure comprises and is used to control directive wheel, contact roller and the traction wheel that is bent pipe and is fixed in card pipe mechanism on the traction wheel, it is characterized in that: the race axial section of described contact roller is shaped as an approximate duck's egg type shape structure, and wherein taking turns groove width B is that the caliber that is bent pipe subtracts 0.1mm.
2, a kind of blast furnace cooling stave cooling water pipe bending mould according to claim 1 is characterized in that: described duck's egg type shape curvilinear structures satisfies parabolic equation:
Y＝(2.0-2.5)/D*X
2
Design, parabola intersects formation wheel grooved profile with the wheel well width; Wherein D is the caliber that is bent pipe, and the wheel groove width is that the caliber D that is bent pipe subtracts 0.1mm; Wherein Y is groove depth coordinate, the X groove width coordinate of duck's egg type shape curve.
3, a kind of blast furnace cooling stave cooling water pipe bending mould according to claim 1 is characterized in that: the structure of the race axial section of described traction wheel is to be bent the semi-circular shape of pipe radius formation and is that the caliber that is bent pipe reduces the trapezoidal combination structure that 0.2mm constitutes for 2mm, length highly; Be that groove depth adds 2mm for being bent the pipe radius.
4, a kind of blast furnace cooling stave cooling water pipe bending mould according to claim 1, it is characterized in that: the structure of the race axial section of described directive wheel is: it takes turns the radius that groove radius equals to be bent pipe, and the radius that groove depth equals to be bent pipe subtracts the 1mm shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201035642U CN201432027Y (en) | 2009-07-06 | 2009-07-06 | Cooling water pipe bending mould for cooling wall of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201035642U CN201432027Y (en) | 2009-07-06 | 2009-07-06 | Cooling water pipe bending mould for cooling wall of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201432027Y true CN201432027Y (en) | 2010-03-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201035642U Expired - Lifetime CN201432027Y (en) | 2009-07-06 | 2009-07-06 | Cooling water pipe bending mould for cooling wall of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201432027Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151750A (en) * | 2010-11-12 | 2011-08-17 | 哈尔滨锅炉厂有限责任公司 | Small-bore pipe bending die, and method for designing groove profile |
-
2009
- 2009-07-06 CN CN2009201035642U patent/CN201432027Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151750A (en) * | 2010-11-12 | 2011-08-17 | 哈尔滨锅炉厂有限责任公司 | Small-bore pipe bending die, and method for designing groove profile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100331 |