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Round point width flow passage fully-soldering heat exchange plate

A wide flow channel, heat exchange plate technology, applied in heat exchange equipment, lighting and heating equipment, laminated components, etc., can solve the problems of difficult cleaning, large resistance, easy accumulation of dust, etc., to increase the effective heat exchange area, The effect of improving heat exchange efficiency and strengthening support strength

Active Publication Date: 2009-03-18
SHANDONG BEICHEN MECHANICAL & ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of narrow flow channel, complex structure, high resistance, easy to accumulate dust and difficult to clean, the fully welded plate currently used can only be used for liquid-liquid, vapor-liquid and small flow pure gas-liquid and gas. —Heat exchange places such as gas
However, most gases in actual working conditions have a large flow rate, dust content, low pressure or negative pressure. If a narrow flow channel, a corrugated plate with a complex structure or an elliptical flat plate arranged obliquely is used, the resistance is very large and the accumulation Difficult to clean after ash, which seriously affects the use of equipment

Method used

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  • Round point width flow passage fully-soldering heat exchange plate
  • Round point width flow passage fully-soldering heat exchange plate
  • Round point width flow passage fully-soldering heat exchange plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1, such as figure 1 A dot-type wide-flow channel full-welded heat exchange plate is shown, and its structure is: on the rectangular plate, taking the line connecting the midpoints of the short sides as the axis of symmetry, flat-top hemispherical protrusions 3 and 3 are distributed in a rectangular array. Low hemispherical pits 4, the center lines of the columns or rows of the protrusions are arranged at intervals with the lines of the centers of the columns or rows of the pits, the short side edge 1 and the long side edge 2 are respectively connected with the raised top surface and the concave The bottom of the pit is even.

Embodiment 2

[0017] Example 2, such as figure 1 A dot-type wide-flow channel full-welded heat exchange plate is shown, and its structure is: on the rectangular plate, taking the line connecting the midpoints of the short sides as the axis of symmetry, flat-top hemispherical protrusions 3 and 3 are distributed in a rectangular array. Low hemispherical pits 4, the center lines of the columns or rows of the protrusions are arranged at intervals with the lines of the centers of the columns or rows of the pits, the short side edge 1 and the long side edge 2 are respectively connected with the raised top surface and the concave The bottom of the pit is even. The top of the flat-top hemispherical protrusion or pit is a horizontal disc with a diameter of 2 to 10 mm, and the bottom of the disc is a partial spherical shell with a radius of 5 to 40 mm. The chamfering radius of the spherical shell and the plate is 5 ~40 mm, the diameter of the plate pressing hole is 10 ~ 80 mm. The distance between ...

Embodiment 3

[0018] Example 3, such as image 3 4. As shown in 4, on the plate with a rectangular structure, flat-top hemispherical protrusions 3 and flat-low hemispherical pits 4 are distributed in a rectangular array with the line connecting the midpoints of the short sides as the symmetrical axis. The raised columns or The center line of the row and the center line of the column or row of the pit are arranged at intervals, and the short side edge 1 and the long side edge 2 are respectively flush with the convex top surface and the bottom surface of the pit. The structure of the heat exchanger made of heat exchange plates is: at least three dot-type wide-flow channel fully-welded heat exchange plates are arranged in front and back, and the adjacent short side edges or long side edges are welded together. The inlet and outlet of the primary medium gas flow channel 6 are respectively between the two short sides, and the inlet and outlet of the secondary medium gas flow channel 5 are respec...

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Abstract

The invention discloses a dot type wide flow passage fully-welded heat exchange plate, which belongs to components of heat exchange equipment indirectly contacted with heat exchange media. The structure of the heat exchange plate is as follows: protrusions in a flat topping semisphere shape and pits in a flat low semisphere shape are distributed in rectangular arrays on rectangular plate sheets by taking the connecting line of the midpoints of short edges of as a symmetry axis, central connection lines of lines or rows of the protrusions and central connecting lines of lines or rows of the pits are arranged at intervals, and the brims of the short edges and the brims of long edges are respectively at the same level with the top surfaces of the protrusions and the bottom surfaces of the pits. A heat exchanger assembled by the heat exchange plate has a wide flow passage with visible two ends of a medium inlet and a medium outlet, which is advantageous to air circulation, resistance reduction and uneasy dust accumulation; with a structure of round protrusions or the pits, the supporting strength among the plate sheets is strengthened, and the effective heat exchanging area of the plate sheets is increased simultaneously, thus high speed turbulent flow can be formed when the flow rate is low, the heat exchange efficiency is high, and simultaneously the generated turbulent flow can generate self sweeping function to the accumulated dust.

Description

technical field [0001] The invention pertains to parts of heat exchange equipment in which the heat exchange media do not come into direct contact, in particular to parts of fully welded heat exchange equipment for fixed plates or laminated channel assemblies for two gas exchange media. Background technique [0002] Fully welded plate heat exchanger is a high-efficiency heat exchange equipment specially designed for high-temperature and high-pressure working conditions in thermal power, nuclear power, chemical industry, oil refining, smelting and other industries. It absorbs many advantages of similar products at home and abroad. It retains the advantages of high heat transfer efficiency and small size of the plate heat exchanger, and has the characteristics of high pressure and high temperature resistance of the shell-and-tube heat exchanger. The surrounding of the corrugated plate is welded to form a variety of product structures. It is the most ideal equipment to replace ...

Claims

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Application Information

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IPC IPC(8): F28F3/04
Inventor 李本远唐金山
Owner SHANDONG BEICHEN MECHANICAL & ELECTRICAL EQUIP
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