CN201078732Y

CN201078732Y - External thread inner corrugated heat exchange tube

Info

Publication number: CN201078732Y
Application number: CNU2006201535071U
Authority: CN
Inventors: 李志安; 卢秉威; 郭文韶
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-07
Filing date: 2006-12-07
Publication date: 2008-06-25
Anticipated expiration: 2016-12-07

Abstract

A male screw internal wave heat exchange pipe is provided, which comprises a pipe joint with two smooth ends and round section and a pipe body segment moulded through rolling. The utility model is characterized in that: the pipe body segment has suitable helix wave wall face on external surface and a round and regulated wave face on internal surface. Compared with the prior art, the utility model enlarges the heat exchanging superficial area inside and outside pipes and enables the fluid in the pipe to generate strong wave-type push disturbance and horizontal disturbance and rotating flow outside the pipe, thus the flowing speed of heat exchanging medium near wall both inside and outside the pipe is increased and the extrinsic strengthening heat conducting effect is obvious. The utility model belongs to a double-side strengthened heat exchanger strengthened inside and outside the pipe symmetrically, which is characterized in good strengthened heat conducting effect, small flow resistance, being uneasy for fouling, high rolling efficiency and low cost, etc.

Description

Corrugated tube in the external screw thread

Technical field

The utility model relates to a kind of heat exchanger tube, particularly relates to a kind of interior corrugated tube of external screw thread of augmentation of heat transfer, is to the improvement of existing heat exchange tube structure, belongs to the heat exchange element technology.

Background technology

The augmentation of heat transfer heat exchanger tube of the general normal employing of existing shell-and-tube heat exchanger is various informative, for example, publication number is the Chinese invention patent application " rhombus thermoexcell " of CN1447089, it is made up of some rhombus pipeline sections, oval pipeline section, circle-oval changeover portion, the two ends cross section of described rhombus pipeline section is for intersecting 15～an angle of 90 degrees between oval and two transverses, reduce gradually to the ovality that the center changes its cross section by the pipeline section two ends, become circle or sub-circular up to the pipeline section center cross-sectional, rhombus pipeline section and oval pipeline section be periodic arrangement successively.

The above-mentioned heat exchanger tube that prior art provides though structure is brought in constant renewal in, has certain practicality, but substantially all exist heat transfer coefficient low, shape difficulty, shortcomings such as the easy fouling of inside pipe wall, the use field is subject to certain restrictions. in the nonstandard motion of reality, is easy to go wrong.

The utility model content

The purpose of this utility model is to overcome the prior art above shortcomings, by improvement to existing heat exchange tube structure, a kind of heat transfer coefficient height is provided, it is simple to make processing, the heat exchanger tube inwall is less scaling, corrugated tube in the external screw thread of applied range, this heat exchanger tube passes through rolling and forming, its tube outer surface has suitable helical corrugation wall, promptly has suitable wingization ratio and suitable lead angle and pitch, and pipe internal surface has the corrugated surface of slick and sly rule, make in the pipe, outer heat exchange area improves greatly, it is moving that extratubal fluid produces stronger spiral lamination turn of tidal stream, and tube fluid produces flowing of advancing wave upon wave, and the augmentation of heat transfer effect is very remarkable.

This heat exchanger tube destroys the boundary layer by utilizing, and the coefficient of heat transfer is improved greatly.Because the augmented form inside and outside the pipe between not is two-sided strengthened, because of having shortened rolling time, has reduced production cost again, and higher heat transfer efficiency is arranged.Owing to when medium circulates in pipe, make the inside and outside same stable rheology of pipe of the steady relatively rule of script turn to multi-form turbulent flow, improved heat exchange efficiency significantly, be applicable to the heat exchanger of All Media.

The technical scheme that the utility model provides is: corrugated tube in this external screw thread, include the smooth circular tube junction in two ends and by the body section of rolling and forming, be characterized in that described body section outer surface has suitable helical corrugation wall, described body section inner surface has the corrugated surface of slick and sly rule.

Compared with prior art, the beneficial effects of the utility model are: when increasing the inside and outside heat transfer sheet area of pipe, make tube fluid produce stronger wave and advance disturbance and laterally disturbance, rotary the flowing of the outer generation of pipe, managing inside and outside nearly wall place heat transferring medium flow velocity increases, and it is all very remarkable to manage inside and outside augmentation of heat transfer effect, belongs to the inside and outside heat exchange tube with two reinforced surfaces of strengthening simultaneously of pipe, have that augmentation of heat transfer is effective, flow resistance,, characteristics such as less scaling, rolling efficient height, cost are low.

Description of drawings

Accompanying drawing is the structural representation of the embodiment that provides of the utility model.

The specific embodiment

As shown in the figure, corrugated tube in this external screw thread, include the smooth circular tube junction 1 in two ends and by the external screw thread inner corrugated pipe body section 2 of rolling and forming, its middle tube body section 2 outer surfaces have suitable helical corrugation wall, and body section 2 inner surfaces have the corrugated surface of slick and sly rule, because the heat exchanger tube outside is a thread forms, body inside is corrugated form, the inside and outside medium of pipe will produce the diverse type of flow like this, and heat exchange process is strengthened, and exchange capability of heat strengthens.

Claims

1. corrugated tube in the external screw thread, include the smooth circular tube junction in two ends and by the body section of rolling and forming, it is characterized in that described body section outer surface has suitable helical corrugation wall, described body section inner surface has the corrugated surface of slick and sly rule.