CN218821820U

CN218821820U - Plate component of plate-shell type heat exchanger and heat exchange plate group formed by plate component

Info

Publication number: CN218821820U
Application number: CN202223243342.5U
Authority: CN
Inventors: 杨静; 王振岭; 李泽煌; 周登先
Original assignee: Shanghai Baofeng Machinery Manufacturing Co ltd
Current assignee: Shanghai Baofeng Machinery Manufacturing Co ltd
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-04-07
Anticipated expiration: 2032-12-03

Abstract

A plate component of a plate-shell type heat exchanger and a heat exchange plate group formed by the plate component are provided. The plate sheet assembly of the plate-shell type heat exchanger comprises a metal circular plate, wherein a plurality of V-shaped corrugated grooves are pressed and formed on the metal circular plate, and each V-shaped corrugated groove is symmetrical about a radial symmetry axis. The metal circular plate is also symmetrically provided with two circular through holes, the connecting line of the centers of the two circular through holes is coincident with the radial symmetry axis, and each circular through hole penetrates through at least one V-shaped corrugated groove. Two identical metal circular plates are welded together in a mirror image manner, wherein each V-shaped corrugated groove of one metal circular plate and the corresponding V-shaped corrugated groove of the other metal circular plate form a closed pipeline. The utility model discloses a slab subassembly not only has great heat transfer area, lower pressure drop and higher coefficient of heat transfer, warp when having better rigidity in order to prevent the slab pressurized moreover. In addition, the spiral groove structure further enhances the turbulence degree and the heat exchange area of the fluid, and the inside of the flow channel is not easy to scale.

Description

Plate component of plate shell type heat exchanger and heat exchange plate group formed by plate component

Technical Field

The utility model discloses the totality relates to a lamella heat exchanger.

Background

The plate-shell type heat exchanger is a product between the plate type heat exchanger and the shell type heat exchanger, has the advantages of high heat transfer coefficient, compact structure, less material consumption, various forms, convenience in maintenance and the like, is widely applied to industries and fields such as petrochemical industry, oil refining, natural gas industry, coal chemical industry, industrial freezing process and the like, and shows strong competitiveness by virtue of price and performance.

The plate-shell type heat exchanger takes a metal plate group as a heat exchange element and is formed by pressing thin sheets of stainless steel, industrial pure titanium or other materials. The structure of the plate is different, but it is always the endeavour direction in the field to strengthen the heat exchange effect of the plate, increase the rigidity of the plate surface and improve the pressure bearing capacity of the plate-shell type heat exchanger.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the utility model is to provide a lamella heat exchanger slab subassembly that can strengthen heat transfer effect at least.

According to the utility model provides a plate and shell heat exchanger slab subassembly includes:

a first metal circular plate, on which a plurality of V-shaped corrugated grooves are pressed and formed, each V-shaped corrugated groove being symmetrical about a (same) radial symmetry axis, wherein the first metal circular plate is further symmetrically formed with two circular through holes, a connection line of centers of the two circular through holes coincides with the radial symmetry axis, and each circular through hole passes through at least one V-shaped corrugated groove; and a second metal circular plate identical to the first metal circular plate;

the first metal circular plate and the second metal circular plate are welded together in a mirror image mode, so that each V-shaped corrugated groove of the first metal circular plate and the corresponding V-shaped corrugated groove of the second metal circular plate form a closed pipeline.

According to the utility model discloses a lamella heat exchanger slab assembly, the left and right sides of every V type ripple recess all forms the helicla flute, wherein the spiral opposite direction of left side helicla flute and right side helicla flute.

According to the utility model discloses a lamella heat exchanger slab subassembly, a plurality of V type ripple recesses are parallel to each other and evenly separate and arrange.

According to the utility model discloses a lamella heat exchanger slab subassembly, every V type ripple recess forms 120 contained angles.

The utility model also provides a heat exchange plate group for lamella heat exchanger, it is formed by the mutual welding of a plurality of above-mentioned lamella heat exchanger slab subassemblies, thereby the circular perforation of each lamella heat exchanger slab subassembly aligns each other and forms corresponding board journey runner wherein.

The plate assembly of the plate-shell type heat exchanger not only has larger heat transfer area, lower pressure drop and higher heat transfer coefficient, but also has better rigidity to prevent the deformation of the plate when the plate is pressed. In addition, the spiral groove structure further enhances the turbulence degree and the heat exchange area of the fluid, and the inside of the flow channel is not easy to scale.

Drawings

Fig. 1 is a schematic sectional structure view of a single metal circular plate of a plate-and-shell heat exchanger plate assembly according to the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 shows a single circular metal plate of a plate and shell heat exchanger plate package according to the invention, which plate package consists of two such circular metal plates welded together.

The illustrated metal circular plate is stamped (cold-press formed) with a plurality of V-shaped corrugated grooves 2, each V-shaped corrugated groove 2 being symmetrical about a radial symmetry axis (vertical center line in the figure). The V-shaped corrugated groove 2 is processed by one-time pressing, the same stamping die ensures that the sizes and specifications of the corrugations of different plates are completely consistent, and the symmetrical wafers and the corrugations enable the plates to be stressed uniformly and have strong bearing capacity. The metal circular plate is also symmetrically provided with two circular through holes 1, and the connecting line of the centers of the two circular through holes 1 is superposed with the radial symmetry axis. In order to form the plate-pass flow channels mentioned later, each circular perforation 1 passes through at least one V-shaped corrugation groove 2. The left side and the right side of each V-shaped corrugated groove 2 form a spiral groove structure, wherein the spiral directions of the left spiral groove and the right spiral groove are opposite. The left and right spiral grooves are staggered by half a groove position at the radial symmetry axis. These V-shaped corrugated grooves 2 are arranged in parallel and evenly spaced apart from each other. Each V-shaped corrugation groove 2 forms an angle of 120 deg. with respect to the radial symmetry axis.

The plate assembly is formed by welding together two metal circular plates of identical structure in a welding area 3 in a mirror image manner, wherein each V-shaped corrugated groove 2 of one metal circular plate and the corresponding V-shaped corrugated groove 2 of the other metal circular plate form a closed pipeline in the form of a spiral flow channel. The spiral flow channel may adopt a widened flow channel, the width of which is, for example, 1.5 times of that of a conventional flow channel; this is particularly useful in applications where solid particles are present and fouling is prone to occur, while increasing heat transfer performance. The welding area 3 can adopt automatic plasma welding, and has the advantages of small heat affected zone, small deformation of welded products, good forming effect of automatic connection welding seams, guaranteed technical maturity and quality and the like; the formed welding structure between the net-shaped plates can bear thermal shock, icing expansion and the like.

A plurality of the above-formed plate assemblies (with completely identical dimensions) are overlapped and welded together to form a cylindrical heat exchange plate group for a plate and shell heat exchanger, wherein the circular through holes 1 of the plate assemblies of the plate and shell heat exchanger are aligned with each other to form corresponding plate-pass flow channels. After the shell is arranged on the outer side to form the cylindrical heat exchanger, a shell pass flow channel is formed between the shell and the plate assembly. The plate shell structure of such plate and shell heat exchangers is well known in the art and will not be described in further detail here for the sake of brevity.

When the material passes through the spiral flow channel arranged between the plate assemblies, the spiral grooves enable the fluid to change the flow direction continuously, and generate rotation and torsion, so that mass points of all parts in the fluid are quickly transferred continuously, and the heat exchange is accelerated.

According to the utility model discloses a lamella heat exchanger slab subassembly, the fluid is fast and very easily produces the torrent when the spiral runner or the passageway that wherein forms flow through. The plate component has large heat exchange area and high heat exchange coefficient. In addition, the wider spiral flow channel is not easy to scale and block, and is suitable for viscous media, granular media and media which are easy to generate dirt.

Claims

1. A plate and shell heat exchanger plate package, comprising:

the first metal circular plate is pressed with a plurality of V-shaped corrugated grooves, each V-shaped corrugated groove is symmetrical about a radial symmetry axis, the first metal circular plate is further symmetrically provided with two circular through holes, a connecting line of circle centers of the two circular through holes is coincident with the radial symmetry axis, and each circular through hole penetrates through at least one V-shaped corrugated groove; and

a second metal circular plate identical to the first metal circular plate;

2. The plate package of a plate and shell heat exchanger of claim 1, wherein the left and right sides of each V-shaped corrugated groove are formed with spiral grooves, wherein the spiral direction of the left spiral groove is opposite to that of the right spiral groove.

3. The plate package of a plate and shell heat exchanger according to claim 1, characterized in that the plurality of V-shaped corrugated grooves are arranged parallel to each other and evenly spaced apart.

4. The plate package of a plate and shell heat exchanger according to claim 1, characterized in that each V-shaped corrugation groove forms an angle of 120 °.

5. A heat exchanger plate pack for a plate and shell heat exchanger, characterised in that it is formed by welding a plurality of plate and shell heat exchanger plate packages according to any one of claims 1-4 to each other, wherein the circular perforations of the individual plate and shell heat exchanger plate packages are aligned with each other so as to form respective plate pass flow channels.