CN201387255Y

CN201387255Y - Internal turbulent type heat exchanger

Info

Publication number: CN201387255Y
Application number: CN200920012789U
Authority: CN
Inventors: 周正泓; 周麟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-06
Filing date: 2009-04-06
Publication date: 2010-01-20
Anticipated expiration: 2019-04-06

Abstract

The utility model relates to an internal turbulent flow type heat exchanger which mainly has the structure that an inlet of each heat exchange tube of a tubular heat exchanger is provided with a turbolator, a base body of the turbolator is a circular tube with an external diameter which is the same with an internal diameter of the heat exchange tube, the liquid inlet side of the base body is provided with a circular tube, and the liquid outlet side of the base body is provided with a group of blades which are bent to the circular tube inwards. The internal turbulent type heat exchanger can convert the flow state of liquid in the heat exchange tube into onflow from laminar flow, increase convective flow heat transfer coefficient alpha of the working substance in the heat exchange tube, the heat exchange efficiency of the heat exchanger and the disturbance degree of the liquid, reinforce the flush of the inner wall of the tube, reduce the accumulation of attachments in the tube, is beneficial for reducing fouling resistance in an operating period and extend the effective operating time of a heat exchange device.

Description

Interior disturbed flow type heat exchanger

Technical field

The utility model relates to tubular heat exchanger.

Background technology

Tubular heat exchanger described in the utility model includes tubular heat exchanger and shell and tube cooler.Those skilled in the art knows that their basic structure is identical, and promptly some heat exchanger tube two ends are separately fixed on the through hole of two tube sheet correspondences, and two tube sheets outside is provided with end socket, is respectively equipped with a kind of heat exchange medium import and export on it.The occasion difference used according to tubular heat exchanger, the shell that heat exchanger tube is contained and has another heat exchange medium import and export can be established in the heat exchanger tube outside between two tube sheets; As another heat exchange medium is the normal pressure nature, and shell also can not established in the heat exchanger tube outside between two tube sheets.In theory, the heat transfer of tubular heat exchanger is mainly the heat conduction between the heat exchanger tube inside and outside wall and the convection heat transfer' heat-transfer by convection of fluid and heat exchanger tube, and radiant heat transfer is ignored substantially at this.Because heat exchanger tube inside and outside wall area difference is very little and the thin thermal conductivity factor of tube wall is very big, under the situation of not considering the dirt resistance, the size of total heat transfer efficiency K depends on the convective heat-transfer coefficient α of the inside and outside working medium of heat exchanger tube after heat-transfer working medium is determined.The flow regime of tubular heat exchanger heat exchanger tube inner fluid medium is laminar flow at present, so convective heat-transfer coefficient α is little, and heat transfer efficiency is low.

Summary of the invention

The purpose of this utility model is to provide that a kind of to improve the flow regime that heat exchanger tube inner fluid disturbance degree makes the heat exchanger tube inner fluid be the interior disturbed flow type heat exchanger of turbulent flow.The utility model mainly is at every heat exchanger tube inlet (welding or expanded joint) turbolator to be set, this turbolator matrix is the external diameter pipe identical with the heat exchanger tube internal diameter, its fluid intake side is a pipe, the fluid issuing side is provided with axially open, pipe outlet side is divided into a limit for it and matrix is connected as a single entity, three some blades that the limit is a free margins in addition, and they are one group, this group lobe numbers can be selected according to the condition of work of heat exchanger, and above-mentioned one group of blade is all to the pipe inner bending.When fluid enters every heat exchanger tube inlet, at first to pass through turbolator, under the disturbance of its twisted blade and leading, make the fluid of laminar flow change the fluid of turbulent flow or rotational flow into.

The utility model compared with prior art has following advantage:

1, the utility model can make the flow regime of heat exchanger tube inner fluid transfer turbulent flow to by laminar flow, improves the convective heat-transfer coefficient α of heat exchange intraductal working medium, and then improves the heat exchange efficiency of heat exchanger.

2, increase the disturbance degree of fluid, strengthened, can reduce that attachment accumulates in the pipe, help reducing the dirt resistance of run duration, prolong the effective run time of heat transmission equipment the washing away of inside pipe wall.

Description of drawings

Fig. 1 is the local main generalized section of looking of the utility model.

Fig. 2 is that the A of Fig. 1 is to view.

Fig. 3 is the expansion schematic diagram of the utility model turbolator.

The specific embodiment

Disturbed flow type heat exchanger in of the present utility model, its some heat exchanger tubes 1 two ends are separately fixed on the through hole of two tube sheets, 2 correspondences, and two tube sheets outside is provided with end socket, is respectively equipped with a kind of heat exchange medium import and export on it.The shell that heat exchanger tube is contained and has another heat exchange medium import and export is established in heat exchanger tube outside between two tube sheets.In turbolator 3 of every heat exchanger tube inlet expanded joint, in interior disturbed flow type heat exchanger partial schematic diagram illustrated in figures 1 and 2, this turbolator matrix is the external diameter pipe identical with the heat exchanger tube internal diameter, its fluid intake side is the pipe that flange is established in the end, and the fluid issuing side is one group of 5 blade 4 to the pipe inner bending.When this turbolator is launched, as shown in Figure 3.

Claims

Disturbed flow type heat exchanger in 1 one kinds, its heat exchanger tube two ends are separately fixed on the through hole of two tube sheet correspondences, two tube sheets outside is provided with end socket, be respectively equipped with a kind of heat exchange medium import and export on it, it is characterized in that: a turbolator is set at every heat exchanger tube inlet, this turbolator matrix is the external diameter pipe identical with the heat exchanger tube internal diameter, and its fluid intake side is a pipe, and the fluid issuing side is one group of blade to the pipe inner bending.
2 interior disturbed flow type heat exchangers according to claim 1, it is characterized in that: the fluid intake side of turbolator is the pipe that flange is established in the end.