CN2438079Y

CN2438079Y - Corrugated pipe heat-exhanger

Info

Publication number: CN2438079Y
Application number: CN 00221558
Authority: CN
Inventors: 顾安胜; 周文勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-25
Filing date: 2000-08-25
Publication date: 2001-07-04
Anticipated expiration: 2010-08-25

Abstract

The utility model relates to a corrugated pipe heat exchanger, which is composed of a casing provided with a shell pass interface and a pipe pass interface, and an inner piece, wherein, the casing comprises pipe boxes at both ends and a barrel body in the middle; the inner piece comprises a corrugated heat exchange pipe, pipe plates at both ends, and a flow folding mechanism. Flanges are welded at both ends of the barrel body; the pipe plates are divided into large pipe plates and small pipe plates; the outer diameter pf each small pipe plate is a little smaller than the inner diameter of the barrel body; the small pipe plates are fixedly connected with the flanged on the barrel body through screws; sealing pads are arranged between the small pipe plates and the flanges; the outer diameter of each large pipe plate is larger than the inner diameter of the barrel body; the large pipe plates are clamped and fixed by the flanges on the pipe boxes. The inner piece of the utility model can be taken out of the casing, which is convenient to clean and repair the shell pass; in addition, a fixing structure between the inner piece and the barrel body has the advantages of reliable seal, temperature resistance, and pressure resistance.

Description

Corrugated tube heat exchanger

The utility model relates to a kind of heat exchanger, is specifically related to a kind of corrugated tube heat exchanger.

Corrugated tube heat exchanger is to grow up from traditional shell-and-tube heat exchanger, and fixed tube-sheet exchanger can adopt bellows as heat exchanger tube usually.The structure of this fixed tube sheet type corrugated tube heat exchanger is: form heat exchanger by the housing that is provided with shell side interface and tube side interface and internals two parts, housing comprises the bobbin carriage and the middle cylindrical shell at two ends, internals comprise tube sheet, the baffling mechanism at corrugated tube, two ends, the two ends of every corrugated tube penetrate and are fixed on the tube sheet at two ends respectively, the peripheral flange that forms of two tube sheets, and being welded into overall structure with cylindrical shell, bobbin carriage is connected with cylindrical shell by flange.Heat exchanger structure compactness, the augmentation of heat transfer effect of this structure are obvious, but because the welding of internals and housing is fixing, the cleaning of shell side, keep in repair very inconvenient.And in the shell-and-tube heat exchanger of other structure as adopt bellows as heat exchanger tube, complex structure often, even be difficult to carry out, thereby seldom use.

The utility model purpose provides and a kind ofly can dismantle, be convenient to corrugated tube heat exchanger that shell side is cleaned and overhauls.

For achieving the above object, the technical solution adopted in the utility model is: a kind of corrugated tube heat exchanger, form by the housing and the internals that are provided with shell side interface and tube side interface, described housing comprises the bobbin carriage and the middle cylindrical shell at two ends, described internals comprise corrugated tube, the tube sheet at two ends, baffling mechanism, the two ends of every corrugated tube penetrate and are fixed on the tube sheet at two ends respectively, described cylindrical shell two ends are welded with flange, described tube sheet is divided into large tubesheet and little tube sheet, the external diameter of described little tube sheet is slightly less than the internal diameter of described cylindrical shell, and fixedly connected with the flange on the cylindrical shell with screw, be provided with gasket seal between little tube sheet and the flange, described large tubesheet external diameter is greater than the internal diameter of cylindrical shell, and gripped by the flange on cylindrical shell and the bobbin carriage.

In the technique scheme, described " corrugated tube " is meant inside and outside as undulatory thin-walled heat exchanger tube; Described little tube sheet " is fixedlyed connected with the flange on the cylindrical shell with screw " and is had many screw holes on the circumference of little tube sheet one side that is meant internals, be connected sealing with the flange (nonstandard) on the cylindrical shell with screw, described " baffling mechanism " is meant the mechanism that is used for guiding shell side to flow and is provided with, as all kinds of deflection plates that define in the GB, also can be the mechanism that non-target plays the baffling effect, as baffling circle etc.

In the technique scheme, pull bar and distance sink tube that described baffling mechanism can be by deflection plate, be used to locate deflection plate are formed, the both sides of the tube bank that corrugated tube constitutes in the described internals are parallel to tube bank and are provided with the bypass plate washer, and bypass plate washer and deflection plate weld together.

In the technique scheme, described baffling mechanism also can be made of baffling circle and the rod baffle that is fixed on the baffling circle.

The utility model operation principle is: the little tube sheet in the internals is connected with flange seal by screw, and large tubesheet grips and sealed by the flange of cylindrical shell and bobbin carriage, thereby internals can extract out from housing, cleans and overhauls.During heat exchange, tube side, shell side medium be process inside and outside bellows respectively, and the turbulence that is excited has reduced the thickness of viscous flow internal layer in the heat transfer boundary layer greatly, even destroys the boundary layer, strengthens convection heat transfer' heat-transfer by convection, thereby reduces the convection heat transfer' heat-transfer by convection thermal resistance, improves the heat exchange effect.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1, owing to fixing by screw between the utility model internals and cylindrical shell and sealing, compare with existing fixed tube-sheet exchanger, internals can be taken out from housing, are convenient to shell side is cleaned and overhauls;

2, reliable, the heatproof, withstand voltage of the sealing of the fixed structure between the utility model internals and cylindrical shell;

3, the utility model can be brought into play the nose balance function that bellows has fully, and very strong applicability is arranged.

Accompanying drawing 1 is the structural representation of the utility model embodiment 1, and the bellows that drawn among the figure is as signal, and the tube bank that all the other bellowss constitute is represented with the chain-dotted line group;

Accompanying drawing 2 is the enlarged diagram of medium and small tube sheet of Fig. 1 and shell flange coupling part.

Wherein: [1], bobbin carriage; [2], tube side interface; [3], hanger; [4], large tubesheet; [5], flange; [6], impingement baffle; [7], baffling is analysed; [8], cylindrical shell; [9], corrugated tube; [10], pull bar; [11], distance sink tube; [12], little tube sheet; [13], flange; [14], gasket seal; [15], screw; [16], shell side interface; [17], bearing; [18], bypass plate washer; [19], flange.

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: referring to attached Figure 1 and Figure 2, a kind of corrugated tube heat exchanger, can adopt vertical structure, also can adopt horizontal type structure, form with the housing and the internals of tube side interface 2 by being provided with shell side interface 16, described housing comprises the bobbin carriage 1 and the middle cylindrical shell 8 at two ends, cylindrical shell 8 two ends are welded with

flange

5,13, cylindrical shell 8 is provided with bearing 17, described internals are by corrugated tube 9, large tubesheet 4, tubule plate 12, deflection plate 7, pull bar 10, distance sink tube 11 and bypass plate washer 18 form a whole, pull bar 10 1 ends are fixed on the large tubesheet 4 and pass each

deflection plate

7,7 of large tubesheet 4 and deflection plates, two 7 of adjacent deflection plates are provided with distance sink tube 11, bypass plate washer 18 is positioned at the peripheral both sides of the tube bank of corrugated tube 9 formations, with deflection plate 7 welding, internals are placed in the cylindrical shell 8, the external diameter of tubule plate 12 is slightly less than the internal diameter of described cylindrical shell 8, have many screwed holes on the circumference in its outside, fixedly connected with the flange 13 on the cylindrical shell 8 with screw 15, and between tubule plate 12 and flange 13, be provided with gasket seal 14 to guarantee sealing, described large tubesheet 4 external diameters are greater than the internal diameter of cylindrical shell 8, and by the flange 5 on cylindrical shell 8 and the

bobbin carriage

1,19 grip, use gasket seal therebetween, guarantee the reliability of bolting sealing, thereby form the tube side and the shell side space of sealing, porch at shell side interface 16 can be provided with impingement baffle 6, with the damage of avoiding the impact of corrugated tube 9 being caused because of fluid, the outer periphery of large tubesheet 4 is equipped with hanger 3, rotates to prevent internals, is convenient to the dismounting and the installation of internals.Flow through respectively tube side and shell side of hot and cold two kinds of media carries out heat exchange during heat exchange inside and outside corrugated tube 9, and internals can be extracted out from housing, is convenient to clean, maintenance.

Embodiment two: as a kind of corrugated tube heat exchanger of embodiment one, wherein the baffling mechanism in the internals is made of baffling circle and the rod baffle that is fixed on the baffling circle.

Claims

1, a kind of corrugated tube heat exchanger, form with the housing and the internals of tube side interface [2] by being provided with shell side interface [16], described housing comprises the bobbin carriage [1] and the middle cylindrical shell [8] at two ends, described internals comprise corrugated tube [9], the tube sheet at two ends, baffling mechanism, the two ends of every corrugated tube [9] penetrate and are fixed on the tube sheet at two ends respectively, it is characterized in that: described cylindrical shell [8] two ends are welded with flange [5,13], described tube sheet is divided into large tubesheet [4] and little tube sheet [12], the external diameter of described little tube sheet [12] is slightly less than the internal diameter of described cylindrical shell [8], and fixedly connected with the flange [13] on the cylindrical shell [8] with screw [15], be provided with gasket seal [14] between little tube sheet [12] and the flange [13], described large tubesheet [4] external diameter is greater than the internal diameter of cylindrical shell [8], and by the flange [5 on cylindrical shell [8] and the bobbin carriage [1], 19] grip.

2, corrugated tube heat exchanger as claimed in claim 1 is characterized in that: described baffling mechanism is made up of deflection plate [7], the pull bar [10] that is used to locate deflection plate [7] and distance sink tube [11].

3, corrugated tube heat exchanger as claimed in claim 2 is characterized in that: the both sides of the tube bank that corrugated tube in the described internals [9] constitutes, and be parallel to tube bank and be provided with bypass plate washer [18], bypass plate washer [18] welds together with deflection plate [7].

4, corrugated tube heat exchanger as claimed in claim 1 is characterized in that: described baffling mechanism is made of baffling circle and the rod baffle that is fixed on the baffling circle.