CN102052869A

CN102052869A - Plate bundle of U-shaped fin plate heat exchanger

Info

Publication number: CN102052869A
Application number: CN 201010529884
Authority: CN
Inventors: 张锁龙; 郝存根; 王平
Original assignee: Changzhou University
Current assignee: Liyang Chang Technology Transfer Center Co., Ltd.
Priority date: 2010-11-03
Filing date: 2010-11-03
Publication date: 2011-05-11
Anticipated expiration: 2030-11-03
Also published as: CN102052869B

Abstract

A plate bundle of a U-shaped fin plate heat exchanger comprises rectangular fins, saw-tooth fins and flat plates; the rectangular and the saw-tooth fins are arranged on the front sides and the back sides of the flat plates through seam welding respectively; the two sides of each fin are turned over upwards from the weld edge; and finally, the flat plates are combined with one another to form the plate bundle of the U-shaped fin plate heat exchanger (seeing the structural drawings in the drawings of the abstract in the specification). Therefore, staggered flow passages perpendicular to one another are formed on two sides of the fin-type plates through the fins; and the purpose of heat exchange of hot and cold fluids is achieved on the two sides of the flat plate through the fins and the flat plates. The U-shaped fin plate heat exchanger aims at combustion furnaces and high pollution problems such as flue gas and the like, and can be applied to energy recovery of pollutant tail gas in the field of high-temperature gas-gas energy exchange under normal pressure and low pressure. The invention has the characteristics of compact structure, good operation stability, simple manufacturing technology, high heat exchange efficiency, low cost and the like.

Description

The board-like heat exchanger plate bundle of U type fin

Technical field:

U type fin plate type heat exchanger is a kind of heat exchanger between plate type heat exchanger and plate-fin heat exchanger, be mainly used in normal pressure and low-voltage high-temperature gas-gas energy exchange, application is the recovery of tail gas such as incinerator, flue gas, and it has, and heat exchange area per unit volume is big, compact conformation, light and handy, characteristics such as heat-transfer intensity is high, can prevent effectively that runner that high temperature deformation causes from stopping up and production technology is simple.Simultaneously, the energy that also can be widely used in industrial circles such as oil, chemical industry, the energy reclaims.

Background technology:

Characteristics such as plate type heat exchanger has the heat transfer efficiency height, and is safe and reliable, takes up an area of little, easy care, and drag losses is few, and cost of investment is low.The plate of traditional plate type heat exchanger is through punch forming, and cost height not only, and temperature resistance difference deformability is relatively poor relatively in the high temperature heat exchange, once it is flexible to expand, forms the distortion of plate repairs very difficultly, often can only reappear purchase when serious.Though plate-fin heat exchanger heat-transfer intensity height because runner is narrow and small, causes easily and stops up and increase pressure and fall.And, on production technology, adopt soldering, the expense height, the specification requirement difficulty is big, and the size of soldering oven has also influenced the maximization of plate.

The invention provides a kind of finned seam weldering plate.This plate utilizes the superiority of seam welding technology continuously through layout reasonably, makes the parallel fins of welding be folded into the U type.Therefore, it not only has the effect of fin---and improved non-deformability, the fin turnover forms open runner and prevents from effectively to stop up, and has reduced the needed large-scale input expense of soldering.

Summary of the invention:

The objective of the invention is to overcome shortcoming and expensive expense in the manufacturing technology that has board-like and plate-fin heat exchanger now, provide a kind of being convenient to produce, and the U type fin plate type heat exchanger with multiple advantages.Wherein be mainly the finned plate bundle of U type, stitch the rectangle or the serrated fin of the some of burn-oning according to the layout of design, staggered fin process turns down, and the parallel of two boards sheet oppositely interlocked, form the open runner of fenestration, and then form the heat exchanger plates Shu Danyuan of plate type heat exchanger.

This heat exchanger plate is divided into A, B two sides: the A face is called the front, adopts rectangular fin, utilizes vertical distribution form of black and white chess lattice to stitch weldering; The B face is called the back side, adopts serrated fin, utilizes lined line landscape layout form, stitches weldering.(as Fig. 1)

The dull and stereotyped two sides of monoblock bonding pad turn down out respectively vertical fin and, vertical (as Fig. 2) of A face and horizontal (as Fig. 3) of B face form open runner between fin.Thus, vertical fins is played a supporting role between two plates, has higher rigidity, can effectively prevent the plate bundle because of the distortion that various factors produces, and prevents that runner from stopping up.

Plate after the moulding, per two all A-A face (as Fig. 4) or B-B face (as Fig. 5) assemblings relatively, and fill a vacancy by the parallel Rotate 180 of another a piece plate ° room that makes A-A face or B-B face form fin.Relative edge and the reverse flange of adjacent edge, welding with the battery limit (BL), surrounding at last forms the heat exchanger plates bundle.So the heat exchange unit of moulding is formed runner and B-B face composition runner according to arts demand at the A-A face, and the cold fluid and hot fluid of flowing through respectively reaches the purpose of heat exchange.

Description of drawings:

Fig. 1 be whole plate A face (front) with B face (back side) rectangular fin and serrated fin flat distribution map (among the figure 1, put in order plate, 2, rectangular fin, 3, A face (front) heat exchange zone, 4, front, flange weld zone, 5, the rectangular fin turn-line, 6, rectangular fin seam bonding wire, 7, serrated fin, 8, B face (back side) heat exchange zone, 9, the back side, flange weld zone, 10, serrated fin turn-line, 11, serrated fin seam bonding wire)

Fig. 2 is that plate A face (front) welds through seam, and rectangular fin is turnover back structure chart upwards

Fig. 3 is that plate B face (back side) welds through seam, and serrated fin is turnover back structure chart upwards

Fig. 4 is that two plate A-A faces are through upset assembling schematic diagram

Fig. 5 is that two plate B-B faces are through upset assembling schematic diagram

Fig. 6 is the board-like heat exchanger plate sheet of U type fin forms the integral slab bundle through assembling a cold fluid and hot fluid heat exchange schematic diagram

The specific embodiment:

As shown in Figure 6, cold fluid is by A-A face one side inflow, and opposite side flows out; Hot fluid is by vertical direction B-B face one side inflow, and opposite side flows out, and two side liquids form cross-flow, and plate plays the separation of the fluid effect; Fin plays the effect of disturbance fluid augmentation of heat transfer, simultaneously, has the plate of enhancing rigidity, improves the ability of plate resistance to deformation.Cold fluid and hot fluid is finished heat transmission by plate and fin.

Claims

1.U type fin plate type heat exchanger is a kind of a kind of novel gas-to-gas heat exchanger between welded plate type heat exchanger and plate-fin heat exchanger.It stitches the staggered rectangular fin (or serrated fin) of burn-oning respectively by monoblock flat board positive and negative (A, B) both sides, with the upwards turnover of its both sides, form the runner of the open interruption of U type, make then that plate is parallel in twos to interlock, form the cross-flow passage of cold fluid and hot fluid in dull and stereotyped both sides and form.The U type fin of seam weldering plays the effect that increases heat exchange area and support plate; The discontinuity runner that the fin that is interspersed forms reaches the effect of windowing of smooth formula fin in the plate-fin heat exchanger.

2. U type fin plate type heat exchanger according to claim 1 is characterized in that substituting with U type welding fin the punch forming of plate type heat exchanger; Soldering with continuous seam weldering replacing plate fin heat exchanger.

3. U type fin plate type heat exchanger according to claim 1 is characterized in that U type fin has not only increased the plate heat exchange area, and plays the supporting role between plate, helps increasing the non-deformability of heat exchanger plates.

4.. U type fin plate type heat exchanger according to claim 1 is characterized in that the discontinuity runner that the plate interfascicular forms, and impels the cold fluid and hot fluid turbulence, destroys thermal boundary layer effectively, obtains bigger heat transfer efficiency.

5. U type fin plate type heat exchanger according to claim 1 is characterized in that whole plate Shu Caiyong seam welding technology, has avoided the high cost of soldering effectively, reaches weak points such as ratio of briquetting is low.