CN201439948U - W-shaped flame boiler water-cooling wall internal thread pipe - Google Patents
W-shaped flame boiler water-cooling wall internal thread pipe Download PDFInfo
- Publication number
- CN201439948U CN201439948U CN2009202339221U CN200920233922U CN201439948U CN 201439948 U CN201439948 U CN 201439948U CN 2009202339221 U CN2009202339221 U CN 2009202339221U CN 200920233922 U CN200920233922 U CN 200920233922U CN 201439948 U CN201439948 U CN 201439948U
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Abstract
The utility model relates to a W-shaped flame boiler water-cooling wall internal thread pipe, which comprises a pipe body; convex ribs are helically arranged on the inner wall of the pipe body, and a helix angle alpha of the convex ribs which are helically arranged is controlled within the range of 40 to 45 degrees. The internal thread pipe has the advantages that when medium inside the pipe rotates to ascend, the rotating speed is relatively rapid, the heat exchanging efficiency is higher, and the like.
Description
Technical field
The utility model relates to a kind of riffled tube, is specifically related to a kind of W type flame boiler water-cooling wall riffled tube.
Background technology
Flourish along with electric utility, power plant construction just develops towards high parameter, big capacity direction.Traditional W type flame boiler water-cooling wall is employed all to be that lead angle is 30 ° a riffled tube.Under the operating mode, the medium in the riffled tube can flow under the pressure of pump from bottom to top.During media flow in the riffled tube, because the existence of internal thread, medium moves in the shape of a spiral.And the lead angle of riffled tube size is linear with medium screw speed, and promptly lead angle is big, and medium screw speed is fast.And the centrifugal force that medium rotatablely moves and produced will destroy the laminar flow phenomenon of medium.Because the lead angle of existing riffled tube is 30 °, its centrifugal force is less to the effect of the bubble that is present in riffled tube inwall interface and steam blanket.Because its destruction to the dielectric layer flow phenomenon is insufficient, thereby its rate of heat exchange is lower.
Summary of the invention
The purpose of this utility model is: provide a kind of under the medium motion condition, can fully destroy the laminar flow phenomenon of medium, reach the effect of turbulent flow, thereby realize the higher relatively W type flame boiler water-cooling wall riffled tube of heat exchanger effectiveness, to overcome the deficiency of prior art.
In order to achieve the above object, the technical solution of the utility model is: a kind of W type flame boiler water-cooling wall riffled tube comprises body; Inwall at body has the convex tendon of shape layout in the shape of a spiral, and its innovative point is: the lead angle α of the convex tendon that described shape is in the shape of a spiral arranged is controlled in 40～45 ° of scopes.
Can understand by above given technical scheme, the utility model is because the lead angle of its inner convex rib, lead angle than prior art, 10～15 ° have been strengthened, thereby medium rotary speed in the ascending motion in its pipe is very fast, and effective bubble that is present in the inside pipe wall interface that absorbs, destroyed the steam blanket that is present in internal face, the contact area that the inwall that has strengthened riffled tube and medium directly contact, thereby effectively improved heat exchanger effectiveness of the present utility model, realized its purpose that will realize.
Further innovative point of the present utility model is:
The convex tendon that described shape is in the shape of a spiral arranged be 6 spiral convex ribs equidistantly arranging, and its pitch d is controlled in 12.5～13.5mm scope; And the height h of described convex tendon is controlled in 1.3～1.7mm scope.
The convex tendon that described shape is in the shape of a spiral arranged is a trapezoidal thread, and its thread spindle top width S is controlled in 5.5～6.5mm scope, and its side angle K is controlled in 60～75 ° the scope.
The purpose of above-mentioned two technical schemes mainly is further to improve it and absorbs bubble, destroys the ability of steam blanket, and further improves its heat exchanger effectiveness.
After technique scheme was implemented, the optimization that the utility model had had riffled tube, structure advanced person, and characteristics such as heat exchanger effectiveness height are conspicuous under the operating mode.
Description of drawings
Fig. 1 is the structural representation of the utility model W type flame boiler water-cooling wall riffled tube;
Fig. 2 is the structural representation of the trapezoidal convex tendon arranged of shape in the shape of a spiral among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the description by specific embodiment is further described the utility model.
Shown in Fig. 1,2, a kind of W type flame boiler water-cooling wall riffled tube comprises body 1; At the inwall 1-1 of body 1 the convex tendon 1-2 of shape layout is in the shape of a spiral arranged, the lead angle α of the convex tendon 1-2 that described shape is in the shape of a spiral arranged is controlled in 40～45 ° of scopes; The convex tendon 1-2 that described shape is in the shape of a spiral arranged be 6 spiral convex ribs equidistantly arranging, and its pitch d is controlled in 12.5～13.5mm scope; And the height h of described convex tendon 1-2 is controlled in 1.3～1.7mm scope.And the convex tendon 1-2 that described shape is in the shape of a spiral arranged is a trapezoidal thread, and its thread spindle top width S is controlled in 5.5～6.5mm scope, and its side angle K is controlled in 60～75 ° the scope.
The utility model is an example with 6 inside spin convex tendons, adopting thick T12 or the T23 steel alloy seamless pipe of Φ 43 * 8mm is blank, being processed into external diameter of the present utility model through cold-drawn is 34.95mm, large diameter is 23.65mm, wall thickness is 5.65mm, and thread depth is 1.49mm, and thread spindle top width S is 5.85mm, the whorl side corner is 69 °, and lead angle is 42 °.Certainly, because the actual requirement difference of using, thereby the utility model does not limit to riffled tube described above.
The utility model first sample and prior art comparative test result show that the utility model is because the movement velocity that the medium rotation is risen in the pipe is very fast relatively, thereby its heat exchanger effectiveness, and comparable prior art improves about 50%.Obtained tangible technical economic benefit.
Claims (3)
1. a W type flame boiler water-cooling wall riffled tube comprises body (1); Inwall (1-1) in body (1) has the convex tendon (1-2) of shape layout in the shape of a spiral, and it is characterized in that: the lead angle α of the convex tendon (1-2) that described shape is in the shape of a spiral arranged is controlled in 40～45 ° of scopes.
2. W type flame boiler water-cooling wall riffled tube according to claim 1 is characterized in that: the convex tendon (1-2) that described shape is in the shape of a spiral arranged be 6 spiral convex ribs equidistantly arranging, and its pitch d is controlled in 12.5～13.5mm scope; And the height h of described convex tendon (1-2) is controlled in 1.3～1.7mm scope.
3. W type flame boiler water-cooling wall riffled tube according to claim 1 and 2, it is characterized in that: the convex tendon (1-2) that described shape is in the shape of a spiral arranged is a trapezoidal thread, and its thread spindle top width S is controlled in 5.5～6.5mm scope, and its side angle K is controlled in 60～75 ° the scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202339221U CN201439948U (en) | 2009-07-28 | 2009-07-28 | W-shaped flame boiler water-cooling wall internal thread pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202339221U CN201439948U (en) | 2009-07-28 | 2009-07-28 | W-shaped flame boiler water-cooling wall internal thread pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439948U true CN201439948U (en) | 2010-04-21 |
Family
ID=42544618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202339221U Expired - Lifetime CN201439948U (en) | 2009-07-28 | 2009-07-28 | W-shaped flame boiler water-cooling wall internal thread pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439948U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806127A (en) * | 2016-05-03 | 2016-07-27 | 西安交通大学 | Boiler water-cooled wall inner threaded pipe with streamline-section inner ribs |
| CN105849463A (en) * | 2013-12-27 | 2016-08-10 | 三菱日立电力系统株式会社 | Heat transfer tube, boiler, and steam turbine facility |
| CN106524814A (en) * | 2016-12-19 | 2017-03-22 | 西安交通大学 | Wide load boiler water cooled wall internal threaded pipe with fins with arc-shaped transition sections |
| CN112856477A (en) * | 2021-01-18 | 2021-05-28 | 哈电发电设备国家工程研究中心有限公司 | Water-cooled wall internal thread tube panel and processing method thereof |
-
2009
- 2009-07-28 CN CN2009202339221U patent/CN201439948U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105849463A (en) * | 2013-12-27 | 2016-08-10 | 三菱日立电力系统株式会社 | Heat transfer tube, boiler, and steam turbine facility |
| CN105849463B (en) * | 2013-12-27 | 2017-10-03 | 三菱日立电力系统株式会社 | Heat conducting pipe, boiler and steam turbine plant |
| CN105806127A (en) * | 2016-05-03 | 2016-07-27 | 西安交通大学 | Boiler water-cooled wall inner threaded pipe with streamline-section inner ribs |
| CN105806127B (en) * | 2016-05-03 | 2018-06-26 | 西安交通大学 | A kind of boiler water wall riffled tube with streamline section internal-rib |
| CN106524814A (en) * | 2016-12-19 | 2017-03-22 | 西安交通大学 | Wide load boiler water cooled wall internal threaded pipe with fins with arc-shaped transition sections |
| CN112856477A (en) * | 2021-01-18 | 2021-05-28 | 哈电发电设备国家工程研究中心有限公司 | Water-cooled wall internal thread tube panel and processing method thereof |
| CN112856477B (en) * | 2021-01-18 | 2022-05-27 | 哈电发电设备国家工程研究中心有限公司 | Water-cooled wall internal thread tube panel and processing method thereof |
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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: 20100421 |