CN113483585A

CN113483585A - Plate heat exchanger plate based on merry's law

Info

Publication number: CN113483585A
Application number: CN202110803822.3A
Authority: CN
Inventors: 张玉福; 邹建东; 余建平; 马一鸣; 姚立影; 马金伟; 梅光旭
Original assignee: Shanghai Lanbin Petrochemical Equipment Co Ltd; Lanpec Technologies Ltd
Current assignee: Shanghai Lanbin Petrochemical Equipment Co Ltd; Lanpec Technologies Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-10-08

Abstract

The invention relates to a plate heat exchanger plate based on the law of morley, which comprises a plate body, wherein a plurality of groups of binary network structures are uniformly arranged on the plate body, and each group of binary network structures are arranged at equal intervals; each group of bipartite network structures comprises a plurality of levels of downstream bipartite network structures; the cube of the width of the upper-level binary network structure is the sum of cubes of the widths of the lower-level binary network structures, and so on; wherein the bipartite network structure is a groove. The invention solves the problems of complex plate structure, large flow resistance, large manufacturing difficulty and the like of the plate heat exchanger, optimizes the plate structure and provides reference for the processing design of the plate heat exchanger.

Description

Plate heat exchanger plate based on merry's law

Technical Field

The invention relates to the technical field of plate heat exchangers, in particular to a plate heat exchanger plate based on the law of morley.

Background

Compared with other heat exchangers, the plate heat exchanger has the advantages of compact structure, good heat exchange performance, convenience in installation and cleaning and the like, and is widely applied to various industries, but the plate structure of the plate heat exchanger directly influences the heat exchange area and the flow resistance so as to influence the heat exchange performance. The existing plate heat exchanger has large flow resistance and high processing cost, and can not fully meet the heat exchange requirements of high efficiency and low resistance.

Tree-like bifurcated networks are common structures in nature. Tree-like branching structures appear to be very complex, but can be generated approximately by a mathematical iterative process. The mury summarizes the previous research results and proposes the law of mury. It is considered to be one of the most basic laws of bifurcated networks. Thomas Young, on the other hand, estimated the resistance of the arterial system as early as 1908, "to calculate the magnitude of the resistance, it was necessary to determine the size of the arterial system and the velocity of the blood flowing through it. "he selected a symmetrical two-part system in which the diameter of each branch was" 4/5 for the trunk diameter, or more precisely 1: 1.26. "by assuming the geometric ratio between the diameters of the daughter and parent vessels, Young calculates that 29 bifurcations need to be reduced to the size of the capillaries. From the estimates of the aorta and capillary lengths, he constructed another 30-generation geometric progression of vessel lengths and continued to calculate the blood volume, flow rate and resistance at different stages of the system. Young does not say why he chooses a ratio of the relative diameters of the maternal and offspring vessels of 1.26:1 nor does he comment that this ratio is 21/3:1, but it is certain that one of the rules with which he is familiar supports this choice, whether empirical or theoretical.

By default, the physiological vascular system, through the evolution of natural selection, must achieve an optimal arrangement such that flow is achieved with minimal biological effort in every part of the vessel. In nature, the mammalian circulatory and respiratory system largely follows the law of murry, i.e., the cube of the parent vessel radius is equal to the sum of the cubes of the daughter vessel radii. Both non-biological and biological systems can derive the law of murry.

Therefore, based on the proposition of the law of merry and the calculation of Thomas Young, the invention proposes a bipartite network structure. The bipartite network has a symmetrical structure, follows the law of morry and realizes the minimum resistance.

Disclosure of Invention

The invention provides a plate heat exchanger plate based on the Murili law, which is reasonable in structure, so that the problems that the existing plate heat exchanger is large in flow resistance and high in processing cost, and cannot fully meet the high-efficiency and low-resistance heat exchange requirements are solved.

The technical scheme adopted by the invention is as follows:

a plate heat exchanger plate based on the law of Muli comprises a plate body, wherein a plurality of groups of binary network structures are uniformly arranged on the plate body, and each group of binary network structures are arranged at equal intervals; each group of bipartite network structures comprises a plurality of levels of downstream bipartite network structures; the cube of the width of the upper-level binary network structure is the sum of cubes of the widths of the lower-level binary network structures, and so on; wherein the bipartite network structure is a groove.

Three groups of bipartite network structures are uniformly and symmetrically arranged on the plate body; each group of bipartite network structures are symmetrical and the number of the bipartite network structures corresponds to one.

And each bipartite network structure is provided with a three-level downstream bipartite network structure.

The invention has compact and reasonable structure and convenient processing, greatly increases the heat exchange area by arranging the three-component network structure on the plate body, and simultaneously has smaller resistance increase. The bipartite network has a simple structure, is convenient to process and install, increases the heat exchange area, has small resistance increase, and saves the cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a schematic diagram of a binary network structure according to the present invention;

FIG. 5 is a schematic view of a plate bundle constructed in accordance with the present invention;

wherein, 1, the plate body; 2. a bipartite network structure; 21. a first level bipartite network structure; 22. a second level bipartite network structure; 23. a three-level two-division network structure; 3. an insert.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Embodiment 1, as shown in fig. 1, a plate heat exchanger plate based on the law of murray comprises a plate body, wherein a plurality of groups of binary network structures 2 are uniformly arranged on the plate body 1, and each group of binary network structures are arranged at equal intervals; each group of said bipartite network structures 2 comprises several levels of downstream bipartite network structures; the cube of the upper level bipartite network structure width is the cube sum of the lower level bipartite network structure width; the two-part network structure 2 is a groove, and the concave depth of each two-part network structure is equal.

In embodiment 2, as shown in fig. 1, 2 and 3, on the basis of embodiment 1, three groups of bipartite network structures 2 are uniformly arranged on a plate body 1, and each group of bipartite network structures are arranged at equal intervals, are symmetrical in structure, and are in one-to-one correspondence in number. The arrangement mode accords with the law of murry and can reduce the pressure loss to the maximum extent.

Embodiment 3, referring to fig. 4, on the basis of

embodiments

1 and 2, each group of bipartite network structures 2 comprises three levels of downstream bipartite network structures; the cube of the width of the upper bipartite network structure is the sum of the cubes of the widths of the lower bipartite network structures, i.e. d1³=2d2³，d2³=2d3³(ii) a Wherein the bipartite network structure 2 is a groove. The arrangement mode accords with the law of murry and can reduce the pressure loss to the maximum extent.

Each group of bipartite network structures is provided with a three-level bipartite network structure, and the cube of the width of the upper bipartite network structure is the cube sum of the width of the lower bipartite network structure, and so on.

As shown in fig. 5, in the plate bundle formed by the plates of the plate heat exchanger of the present invention, every two plates are buckled with each other to form a plate tube, and at this time, the concave body of one plate corresponds to the concave body of the corresponding portion of the other plate; the plate tubes are overlapped in pairs to form the plate bundle, and the protrusion on one side of one plate tube is convex

The body corresponds to the convex body at the corresponding part of another plate pipe, and a plate sheet is arranged between two adjacent plate pipes

And a long insert is required to be placed at the long straight edge, and the height of the insert is 2 times higher than that of the bulge of the plate. An opening is respectively arranged at the end part of the plate bundle and is an inlet and an outlet of the fluid A; two openings are respectively arranged on two side surfaces of the plate bundle and close to two ends of the plate bundle, and the openings are respectively an inlet and an outlet of the fluid B, so that the plate bundle of the double-side convection type is formed.

The invention greatly increases the heat exchange area of the plate and has the advantages of small resistance, simple structure, low cost and the like.

Claims

1. The utility model provides a plate heat exchanger slab based on default law, includes the slab body, its characterized in that: a plurality of groups of bipartite network structures (2) are uniformly arranged on the plate body (1), and each group of bipartite network structures are arranged at equal intervals; each group of said bipartite network structures (2) comprises several levels of downstream bipartite network structures; the cube of the width of the upper-level binary network structure is the sum of cubes of the widths of the lower-level binary network structures, and so on; wherein the bipartite network structure (2) is a groove.

2. A plate heat exchanger plate according to claim 1, based on the law of merry, characterized in that: three groups of bipartite network structures (2) are uniformly and symmetrically arranged on the plate body (1); each group of bipartite network structures are symmetrical and the number of the bipartite network structures corresponds to one.

3. A plate heat exchanger plate according to claim 1 or 2, based on the law of merry, characterized in that: and each bisection network structure (2) is provided with a three-level downstream bisection network structure.