CN2123055U

CN2123055U - Corrugated helically coiled shell and tube exchanger

Info

Publication number: CN2123055U
Application number: CN 92208859
Authority: CN
Inventors: 方净; 郭永泉; 赵成武
Original assignee: 方净
Priority date: 1992-05-04
Filing date: 1992-05-04
Publication date: 1992-11-25

Abstract

The utility model discloses a corrugated spiral shell and pipe heat exchanger. A pipe bundle is formed by internal and external corrugated spiral pipes with certain quantities and an identical specification. The both ends of the pipe bundle are sealed by sealing head flanges. Water inlet or water outlet pipes are arranged on the sealing head flanges of the one end or the both ends of the pipe bundle. The sealed pipe bundle is assembled in a shell of pipe which is provided with water inlet or water outlet pipes. In use, a medium flows in and out from the water inlet or the water outlet pipes on the sealing head flanges through the interiors of the internal and the external corrugated spiral pipes. The other medium flows in and out from the water inlet or the water outlet pipes on the shell of pipe by flowing among the internal and the external corrugated spiral pipes. The utility model has the advantages of high heat transfer coefficient, strong heat exchange capability, small size, low cost, etc.

Description

Corrugated helically coiled shell and tube exchanger

The utility model relates to a kind of industry or civilian heat-exchange device.

Existing shell-and-tube heat exchanger, Pipe bundle structure is made of several pipes such as pipe, external finned tube or male-pipes.Their shortcoming is that heat transfer coefficient is low, and equipment volume is big, the one-time investment height, and energy loss is many etc.

The purpose of this utility model provides a kind of ripple helix tube shell heat exchanger, and it can remedy the deficiency of above-mentioned several heat exchanger effectively.

The purpose of this utility model is achieved in that a kind of ripple spiral tube heat exchanger, and it comprises two oral siphons and two outlet pipes, particularly uses inside and outside ripple helix tube as heat-transfer pipe.Some, same size, identical shaped inside and outside ripple helix tube are parallel is welded in or rises on tube sheet, form one group of tube bank, the tube bank two ends seal with cover flange, at one end or be respectively equipped with a flange oral siphon and a flange outlet pipe on the cover flange at two ends, one group of tube bank of good seal is assembled in both sides is respectively equipped with in the shell of a flange oral siphon and a flange outlet pipe, a kind of medium passes in and out in inside and outside ripple helix tube from cover flange oral siphon and outlet pipe; Another kind of medium passes in and out through between inside and outside ripple helix tube from flange oral siphon and flange outlet pipe on the shell.

The utility model makes fluid constantly change the flow direction owing to adopt the co-ordinative construction of inside and outside ripple helix tube and shell, can form turbulent flow under lower flow velocity, augmentation of heat transfer.Thereby the raising exchange capability of heat, in WATER AS FLOW MEDIUM--heat transfer coefficient can reach 3500w/m under the hydrothermal exchange condition ²℃.Compare with other shell-and-tube heat exchanger, under equal heat transfer boundary condition, equipment volume can reduce greatly, and has small investment, low cost and other advantages.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the generalized section of inside and outside ripple helix tube shell heat exchanger.

Describe concrete structure of the present utility model and working condition in detail below in conjunction with accompanying drawing.

Some, pitch is 5-20mm; The ripple degree of depth is one of 3-20mm or bull, select that the inside and outside ripple helix tube (1) of trapezoidal, square, triangle or camber line shape ripple is parallel to be welded in or to rise on tube sheet (2) for use, form one group of tube bank (3), tube bank (3) two ends seal with cover flange (4), the cover flange of one or both ends (4) is provided with flange oral siphon (5) and flange outlet pipe (6), and the tube bank (3) of the good seal both sides of packing into are provided with in the shell (9) of (8) of flange oral siphon (7) and flange outlet pipe.During use, a kind of medium enters from the oral siphon (5) on the cover flange (4), and in the inside and outside ripple helix tube (10) of flowing through, the outlet pipe (6) from cover flange (4) flows out; Another kind of medium enters from the flange oral siphon (7) on the shell (9), and flow out from the flange outlet pipe (8) on the shell (9) flow through between inside and outside ripple helix tube (11).Two media between (10) and pipe when (11), can carry out cold-hot and heat-cold two kinds of heat exchanges simultaneously in the inside and outside ripple helix tube of flowing through.

Claims

1, a kind of ripple helix tube shell heat exchanger, it comprises two water inlet pipes (5), (7) and two outlet pipes (6), (8), it is characterized in that with inside and outside ripple helix tube as heat-transfer pipe, be welded in or rise on tube sheet (2) the internal and external screw pipe (1) of some, same size is parallel, two ends are contained in the shell (9) then with cover flange (4) sealing.

2,, it is characterized in that the pitch on the inside and outside ripple helix tube (1) is 5-20mm by the described ripple helix tube of claim 1 shell heat exchanger; The ripple degree of depth is 3-20mm, and ripple can be one or bull.

3, by the described ripple helix tube of claim 1 shell heat exchanger, it is characterized in that the bellows-shaped on the inside and outside ripple helix tube (1), can be trapezoidal, square, leg-of-mutton or camber line shape.