CN2534546Y

CN2534546Y - Whole-welding plate type heat exchanger

Info

Publication number: CN2534546Y
Application number: CN 01265997
Authority: CN
Inventors: 张曼丽; 李德举; 何海澜; 董强林
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-04
Filing date: 2001-12-04
Publication date: 2003-02-05
Anticipated expiration: 2011-12-04

Abstract

The utility model relates to a full-welding plate-typed heat exchanger and comprises a shell and a heat-exchanging core body; the heat-exchanging core body consists of two corrugation heat-exchanging plates that are the same and integrated in certain way, the wave crest is opposite to the wave crest, the heat-exchanging plates are welded on the length direction of the corrugation of the plates to form a flow-channel welding seam A between the plates so as to form a plate bundle; a flow channel is formed between the two plates of the plate bundle; a group of plate bundles is formed in certain way, namely, a passage similar to a circular tube, which is a flow channel between the tubes, is formed between the wave troughs of the plate bundles; the plate bundles are welded crosswise on the end part to form a welding seam B between the tubes; the utility model not only reserves the characteristics of the plate-typed heat exchanger such as the high efficiency and the compact structure, but also has the characteristics of the tube-shell-typed heat exchanger such as the high-temperature resistance and high-pressure resistance, thereby having high heat-transfer efficiency, less pressure loss, uneasy deposition and wide application range.

Description

Welded plate heat exchanger

Technical field

The utility model relates to a kind of plate type heat exchanger.

Background technology

Plate type heat exchanger is from coming into operation in industry first, in the history in existing more than 50 year of China.Particularly since nineteen sixty-five Lan Shi factory succeeds in developing first homemade plate type heat exchanger-BP05 template formula heat exchanger, the application at home of the technology of plate type heat exchanger more and more widely, enter after the eighties, the technology of plate type heat exchanger has obtained significant progress at home.The plate type heat exchanger unique texture makes it have very high heat transfer coefficient, is generally 4500-6500W/m ²K; have simultaneously compact conformation again, take up an area of characteristics such as the space is little, dismounting is easy to maintenance; the material of its a high proportion of part universality, optional majority kind, characteristics such as accomplish scale production easily; the manufacturing cost of plate type heat exchanger is reduced significantly; have vast market; purposes has spreaded all over food, has brewageed, machinery, metallurgy, chemical industry, oil, electric power, boats and ships, weaving, etc. a lot of fields, and become leading heat transmission equipment in the concentrated supply of heating in the city engineering.

For traditional detachable plate type heat exchanger, because the restriction of structure and the limitation of rubber gasket, heatproof is the highest can only to reach 180 ℃, the highest withstand voltage 2.5Mpa, maximum assembling area 1000m ², under process conditions such as some high temperature, high pressure and the medium of industries such as thermoelectricity, nuclear power, chemical industry, oil refining, smelting be inflammable, explosive, poisonous, be difficult to be competent at.At present domesticly generally select shell-and-tube heat exchanger for use in these occasions, not only heat transfer efficiency is low, floor space big for this heat exchanger, maintenance difficult, and service life is short, and weight of equipment is heavy, the manufacturing cost height of same material; Having a strong impact on the normal operation of heating system and other process system, and the overlapping investment expense is bigger.In order to satisfy the needs of special operation condition, the field that enlarges plate type heat exchanger has become the important topic of changing market when header board.

Of the present utility model open

The purpose of this utility model is both to have kept in order to provide a kind of that plate type heat exchanger is efficient, the characteristics of compact conformation, have again that shell-and-tube heat exchanger is high temperature resistant, the characteristics of high pressure, make it have heat transfer efficiency height, the pressure loss is little, less scaling, the scope of application is big New-type plate heat exchanger.

The purpose of this utility model can realize by following measure:

A kind of welded plate heat exchanger comprises shell, heat exchange core body; Described heat exchange core body is to be undulatory heat exchange plate by identical two to make up according to certain way, crest is to crest, assembly welding on the length direction of plate ripple forms runner weld seam A between plate, and becomes the plate bundle, just formed runner between plate between two plates of plate bundle, one group of plate bundle is pressed the certain way combination, and promptly the relative passage that forms approximate pipe with trough of the trough between the plate bundle becomes runner between pipe, in the end, the staggered welding of plate bundle and plate bundle forms weld seam B between pipe.

The utility model has following advantage compared to existing technology:

1, the utility model is by two identical heat exchange plate similar welding formation plate bundles, runner between the plate that forms similar plate type heat exchanger between the plate bundle; Be combined into runner between pipe by the plate bundle again, form heat exchange core body, by shell with plate between between runner and pipe runner separately form two independently flow passage systems, and bear the pressure of system.Therefore the utility model had both kept the characteristics of efficient, the compact conformation of plate type heat exchanger, had high temperature resistant, the high voltage bearing characteristics of shell-and-tube heat exchanger again.

2, the utility model is owing to adopt full welding manner to connect, thereby do not need the rubber gasket sealing, applicable to all temps, pressure physical characteristic and steric requirements, Applicable temperature is 600 ℃ of-200 ∽, pressure range is vacuum-6Mpa, maximum heat exchange area 5000m ²

3, heat exchange plate of the present utility model has all participated in heat exchange, thereby its heat transfer efficiency height.

4, unique plate of the present utility model, make fluid be full of the whole runner that plate forms, all plate surfaces have nearly all participated in changing exchange, medium can realize not having flowing of " dead band " in runner, so it is smooth and easy that fluid flows, resistance is little, can reduce kinetic energy consumption, for the user saves big operating cost.

5, after the welding all around of corrugated plate of the present utility model, because the influence of thermal stress causes freely stretching of plate inboard, the plate surface is not easy to form for dirty layer in running; Simultaneously because the unique texture of plate, between plate in the runner Hydrodynamic turbulence degree big, the dirty thing in plate surface is come off automatically, be difficult for the collection dirt.

6, heat exchange plate adopts the segmentation compacting, and length can be chosen arbitrarily as required, and the veneer heat exchange area changes thereupon.

7, because the big I of heat exchange plate arbitrarily changes, and product structure design can be varied, according to the different process requirement, change combining form, thereby change flow process and circulation area, reach the reasonable coupling of heat exchange core body and shell.

Therefore 8, owing to the housing construction reason, this heat exchanger has the weld seam of overlength, and these weld seams directly have influence on the success or failure of product, and only under the prerequisite of supporting special welding procedure and quality control method, this heat exchanger just has actual use value.

The drawing explanation

Fig. 1 is a structural representation of the present utility model

Runner import 4-heat exchange core body between runner import 3-pipe between 1-shell, 2-plate

Runner exit between runner exit 6-pipe between 5-plate

Fig. 2 is a flow passage structure schematic diagram between the plate of heat exchange core body of the present utility model

Runner between weld seam A 10-plate between 7-heat exchange plate, 8-plate bundle, 9-plate

Runner between 11-pipe

Fig. 3 is a flow passage structure schematic diagram between the pipe of heat exchange core body of the present utility model

Weld seam B between 12-pipe

Embodiment of the present utility model

The utility model is also incited somebody to action in conjunction with the accompanying drawings, and embodiment is described in further detail:

With reference to Fig. 1, welded plate heat exchanger comprises shell 1, heat exchange core body 4; With reference to Fig. 2, described heat exchange core body 4 is to be made up according to certain way by two heat exchange plates 7 that are the ripple glaze shape, crest is to crest, assembly welding on the length direction of plate ripple, form runner weld seam A9 between plate, and become plate bundle 8, just formed runner 10 between plate between two plates of plate bundle: be provided with runner import and export 2,5 between plate at 10 two ends of runner between plate; With reference to Fig. 3, press the certain way combination by one group of plate bundle 8 again, i.e. runner 11 between the pipe of the approximate pipe of the relative formation of the trough between the plate bundle 8 with trough; In the end, plate bundle 8 and the 8 staggered welding of plate bundle form weld seam B12 between pipe, are provided with runner import and export 3,6 between pipe at the two ends of runner between pipe 11.By shell 1 with plate between between runner 10 and pipe runner 11 separately form two independently flow passage systems.Ripple on the described heat exchange plate 7 is rectangle.The length of plate can arbitrarily extend or shorten, and the veneer heat exchange area can arbitrarily change, and the path combination form is varied, satisfies the requirement of various operating modes.

Claims

1, a kind of welded plate heat exchanger comprises shell (1), heat exchange core body (4); It is characterized in that described heat exchange core body (4) is to be made up according to certain way by two heat exchange plates (7) that are the ripple glaze shape, crest is to crest, assembly welding on the length direction of plate ripple, form runner weld seam A (9) between plate, and become plate bundle (8), just formed runner between plate (10) between two plates of plate bundle (8); Be provided with runner import and export (2), (5) between plate at runner between plate (10) two ends; Press the certain way combination by one group of plate bundle (8) again, it is runner (11) between the relative pipe that forms approximate pipe of trough between the plate bundle (8) with trough, in the staggered welding of end panel bundle (8) and plate bundle (8), form weld seam B (12) between pipe, be provided with runner import and export (3), (6) between pipe at the two ends of runner between pipe (11).

2, welded plate heat exchanger as claimed in claim 1 is characterized in that the ripple on the described heat exchange plate (7) is rectangle.