CN201931010U - Pipe bending mould of small-caliber pipe - Google Patents
Pipe bending mould of small-caliber pipe Download PDFInfo
- Publication number
- CN201931010U CN201931010U CN 201020604672 CN201020604672U CN201931010U CN 201931010 U CN201931010 U CN 201931010U CN 201020604672 CN201020604672 CN 201020604672 CN 201020604672 U CN201020604672 U CN 201020604672U CN 201931010 U CN201931010 U CN 201931010U
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- pipe
- chute
- grooved
- groove profile
- small
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Abstract
The utility model relates to a pipe bending mould of a small-caliber pipe. Recently, because new products are increased, ovality and surface quality requirements on bending the small-caliber pipe are improved, and a conventional pipe bending mould groove profile design method can not meet the technical requirements of new products. The pipe bending mould of the small-caliber pipe consists of a pipe bending mould cavity comprising a fan-shaped plate groove profile and a chute groove profile, wherein the groove profile of a fan-shaped plate (2) is a semicircle with a bent pipe diameter shrinking groove profile (1), the fan-shaped plate groove profile and the groove profile of the chute (3) are anti-deformation cavities consisting of two sections of arcs, the fan-shaped plate is provided with the chute of the bent pipe anti-deformation groove profile in a connecting way, the upper end of the fan-shaped plate is connected with a lifting bolt (4), and the upper end of the chute is connected with a hanging plate (5). The utility model is used for designing the groove profile of the pipe bending mould of the small-caliber pipe for supercritical, ultra supercritical and other large boiler units.
Description
Technical field:
The utility model relates to a kind of small-bore pipe bend pipe mould that is used for large-sized boiler units such as overcritical, ultra supercritical.
Background technology:
Traditional bend pipe mould grooved method for designing is that my company's the eighties is by external introduction, be to multiply by coefficient calculations according to pipe name girth to go out sector disk grooved and chute grooved size, inboard, the curved back of pipe presents triangle, the bend pipe ovality is often overproof, and surface configuration does not meet the relevant art requirement.Because new product increases, small-bore pipe bend pipe ovality and surface quality require to improve, and adopt traditional bend pipe mould grooved method for designing, can not satisfy the specification requirement of new product in recent years.
Summary of the invention:
The purpose of this utility model provides the processing that a kind of equipment that utilizes the new grooved of special-purpose small-bore pipe bend pipe mould realizes that small-bore pipe is curved and the method for designing of the new grooved of mould thereof, make in the production of boiler products such as overcritical, ultra supercritical, every detection index significantly improves behind the bend pipe.
Above-mentioned purpose realizes by following technical scheme:
The small-bore pipe bend pipe mould, its composition comprises: the bend pipe mould die cavity comprises sector disk grooved and chute grooved, described sector disk grooved is have bend pipe undergauge grooved semi-circular, the reversible deformation die cavity that described sector disk grooved and chute grooved all are made up of two sections circular arcs, described sector disk has the chute of bend pipe contravariant type grooved by connection, described sector disk upper end connects lifting bolt, and described chute upper end connects link plate.
Be connected with screw between the described small-bore pipe bend pipe mould, described chute and described link plate.
Beneficial effect:
1. the utility model calculating is easy, practical, and ovality is little behind the tube bending, the bend pipe surface quality is good, advantage of wide range of application.
2. the utility model has improved the ovality of small-bore pipe bend pipe and the surface quality of bend pipe, make the tube bending of different relative bending radius after every data all reach standard-required.
3. the utility model is used for the production of boiler products such as overcritical, ultra supercritical, and every detection index significantly improves behind the bend pipe.
The utility model calculate easy, bend pipe is effective, directiveness is strong, in the past few years be widely used in the manufacturing of boiler product, for the production of all kinds of new products provides necessary guarantee.
5. the curved back of the utility model pipe ovality brings up to 5～6% by 8～9%, and the tube surface shape is a regular circular by triangularity.
Description of drawings:
Accompanying drawing 1 structural representation of the present utility model.
The structural representation of accompanying drawing 2 sector disk flute profiles of the present utility model and chute grooved.
The specific embodiment:
Embodiment 1:
The small-bore pipe bend pipe mould, its composition comprises: the bend pipe mould die cavity comprises sector disk grooved and chute grooved, the grooved of described sector disk 2 is have bend pipe undergauge grooved 1 semi-circular, the reversible deformation die cavity that the grooved of described sector disk grooved and chute 3 all is made up of two sections circular arcs, described sector disk has the chute of bend pipe contravariant type grooved by connection, described sector disk upper end connects lifting bolt 4, and described chute upper end connects link plate 5.Be connected with screw 6 between described chute 3 and the described link plate 5.
Embodiment 2:
A kind of method for designing of new grooved of small-bore pipe bend pipe mould:
(1). at first determine the undergauge girth of pipe behind the bend pipe according to the size of relative bending radius, its value is 97～99% of a pipe name girth, calculates the size R value of sector disk grooved then.
(2). determine sector disk flute profile girth according to the undergauge perimeter dimension, sector disk grooved girth is got 0.507 times of pipe name girth, calculates the size H value of sector disk grooved at last.
(3). chute grooved size is got 0.493 times of pipe name girth, according to relative bending radius, calculate the numerical value of chute cavity dimension R1, R2, h again, whether the girth that will check the chute grooved after the chute cavity dimension is determined near 0.493 times of the nominal girth of tube outer diameter, repeats aforementioned calculation if there is difference will adjust the H size.
Relative bending radius ε=bending radius (Rg)/pipe diameter (D)
ε≤3.5 o'clock, diameter (D1)=97%～99% pipe diameter (D) behind the undergauge behind the bend pipe
Sector disk grooved radius (R)=(D1)/2H=(0.507 π D-π R)/2
The numerical value of chute grooved girth=0.493 π D chute cavity dimension R1, R2, h sees the following form:
| ε | R2 | R1 | h |
| 1.5～2 | 0.93D | 0.37D | 0.54 |
| 2～3 | 0.70D | 0.40D | 0.52 |
| 3～3.5 | 0.55D | 0.42D | 0.51D |
Claims (2)
1. small-bore pipe bend pipe mould, its composition comprises: the bend pipe mould die cavity comprises sector disk grooved and chute grooved, it is characterized in that: described sector disk grooved is have bend pipe undergauge grooved semi-circular, the reversible deformation die cavity that described sector disk grooved and chute grooved all are made up of two sections circular arcs, described sector disk has the chute of bend pipe contravariant type grooved by connection, described sector disk upper end connects lifting bolt, and described chute upper end connects link plate.
2. small-bore pipe bend pipe mould according to claim 1 is characterized in that: be connected with screw between described chute and the described link plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020604672 CN201931010U (en) | 2010-11-12 | 2010-11-12 | Pipe bending mould of small-caliber pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020604672 CN201931010U (en) | 2010-11-12 | 2010-11-12 | Pipe bending mould of small-caliber pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201931010U true CN201931010U (en) | 2011-08-17 |
Family
ID=44442549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020604672 Expired - Lifetime CN201931010U (en) | 2010-11-12 | 2010-11-12 | Pipe bending mould of small-caliber pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201931010U (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 |
-
2010
- 2010-11-12 CN CN 201020604672 patent/CN201931010U/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 |
Granted publication date: 20110817 |
|
| CX01 | Expiry of patent term |