CN212551334U

CN212551334U - Double-sided pressing die for heat transfer plate

Info

Publication number: CN212551334U
Application number: CN202020811338.6U
Authority: CN
Inventors: 张廷元; 林虹宇; 朱航; 刘恩义; 薛东; 詹云天
Original assignee: Miki Chihirotoyo Technology Ltd
Current assignee: Miki Chihirotoyo Technology Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-02-19
Anticipated expiration: 2030-05-15

Abstract

A double-sided pressing die for heat transfer plates comprises an upper die, a middle die, a lower die, springs and a limiting plate, wherein the lower die is installed on a lower table top of a hydraulic device, the limiting plate is longitudinally fixed on the lower table top of the hydraulic device, the middle die is in sliding connection with the limiting plate, the springs are arranged between the middle die and the lower die, the upper die is installed on the upper table top of the hydraulic device, and plate pressing structures of the upper die, the middle die and the lower die comprise a flow guide area, a heat exchange area and a sealing groove; one part of the flow guide area is a triangular area, the other part of the flow guide area is a trapezoidal area, and the two areas are connected at the same bottom edge; the sealing groove comprises an angle hole part and a side part, and the side part is of a folded-back curve structure; the heat exchange area is of a non-uniform corrugated structure. The beneficial effects of the utility model are that the production that is used for plate heat exchanger slab, the slab fluid distribution of suppression is more even, improves heat transfer ability. Two sheets can be pressed and formed each time, and the production efficiency is improved.

Description

Double-sided pressing die for heat transfer plate

Technical Field

The utility model relates to a plate heat exchanger production technical field especially relates to a two-sided embossing mold utensil of heat transfer slab.

Background

The heat transfer plate of the plate heat exchanger is provided with an angle hole, a flow guide area, a heat exchange area and a sealing groove at present, wherein the flow guide area is generally designed in a triangular shape, the heat exchange area is generally designed in a symmetrical corrugated shape, the sealing groove of the heat exchange area is generally designed in a straight line, fluid flows in from the angle hole at one side, enters the heat exchange area through the flow guide area, and flows out of the angle hole through the flow guide area at the other side after heat exchange. Because the fluid always flows in from a side corner hole, the fluid is always unevenly distributed in the triangular diversion area, and left and right flow velocities of the heat transfer plate are uneven after the fluid enters the heat exchange area, so that the heat transfer plate cannot complete sufficient heat exchange.

The conventional plate type heat exchanger plate pressing mold generally comprises an upper part and a lower part which are combined into a set of mold, and only one plate is pressed and formed each time, so that the time and labor are wasted, and the efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two-sided embossing mold utensil of heat transfer slab for the production of plate heat exchanger slab, the slab fluid distribution of suppression is more even, improves heat transfer ability. Meanwhile, the upper die, the middle die and the lower die are adopted, and the middle die is a double-sided die, so that two sheets can be pressed and formed at each time, and the production efficiency is improved.

In order to achieve the above object, the utility model adopts the following technical scheme:

a double-sided pressing die for heat transfer plates comprises an upper die, a middle die, a lower die, springs and a limiting plate, wherein the lower die is installed on a lower table top of a hydraulic device, the limiting plate is longitudinally fixed on the lower table top of the hydraulic device, the middle die is in sliding connection with the limiting plate, the springs are arranged between the middle die and the lower die, the upper die is installed on the upper table top of the hydraulic device, and plate pressing structures of the upper die, the middle die and the lower die comprise a flow guide area, a heat exchange area and a sealing groove; one part of the flow guide area is a triangular area, the other part of the flow guide area is a trapezoidal area, and the two areas are connected at the same bottom edge; the sealing groove comprises an angle hole part and a side part, and the side part is of a folded-back curve structure; the heat exchange area is of a non-uniform corrugated structure.

The heat exchange area is characterized in that the corrugations of the heat exchange area are arranged in the same direction and are provided with two wave crests and a wave trough, a wave trough line formed by the wave troughs of all the corrugations is superposed with the central axis of the plate, a wave crest line I formed by the wave crest on one side of the wave trough is a straight line parallel to the central axis, a wave crest line II formed by the wave crest on the other side of the wave trough is a circular arc, an included angle alpha between the wave crest line II and the central axis is 55-65 degrees, an included angle beta between the wave crest line II and the central axis is 40-50 degrees, an included angle beta between the wave crest line I and the central axis is equal to the included angle beta, and an included angle theta between the wave crest line I and the wave crest line I on one side of.

The included angle lambda between the oblique edge of the folded curve of the side edge part of the sealing groove and the straight edge is 125-135 degrees.

Compared with the prior art, the beneficial effects of the utility model are that:

a double-sided pressing die for heat transfer plates is used for producing plates of plate heat exchangers, fluid of the pressed plates is distributed more uniformly, and heat exchange capacity is improved. Meanwhile, the upper die, the middle die and the lower die are adopted, and the middle die is a double-sided die, so that two sheets can be pressed and formed at each time, and the production efficiency is improved.

Drawings

FIG. 1 is a front schematic view of a pressing plate of the double-sided pressing mold of the present invention;

FIG. 2 is a schematic view of the pressing plate of the double-sided pressing mold of the present invention;

FIG. 3 is a view in the direction P of FIG. 1;

FIG. 4 is a view in the direction P of FIG. 2;

fig. 5 is a schematic view of a die pressing structure.

In the figure: 1. an upper die; 2. a middle mold; 3. a spring; 4. a limiting plate; 5. a lower die; 6. a lower deck of the hydraulic device; 7. the position of the plate corner hole; 8. a flow guide area; 9. a sealing groove; 10. a heat exchange zone; 11. a peak line II; 12. a central axis; 13. a peak line I; 14. and a plate limiting table.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following embodiments.

Referring to fig. 1, a double-sided pressing die for heat transfer plates comprises an upper die 1, a middle die 2, a lower die 5, a spring 3 and a limiting plate 4, wherein the lower die 5 is installed on a lower table 6 of a hydraulic device, the limiting plate 4 is longitudinally fixed on the lower table 6 of the hydraulic device, the middle die 2 is in sliding connection with the limiting plate 4, the spring 3 is arranged between the middle die 2 and the lower die 5, the upper die 1 is installed on an upper table of the hydraulic device, and a plate pressing structure of the upper die 1, the middle die 2 and the lower die 5 comprises a flow guide area 8, a heat exchange area 10 and a sealing groove 9; one part of the flow guide area 8 is a triangular area, and the other part of the flow guide area is a trapezoidal area, and the two areas are connected at the same bottom edge; the sealing groove 9 comprises an angle hole part and a side part, and the side part is of a folded-back curve structure; the heat transfer zone 10 is of a non-uniform corrugated structure.

Flow guide area 8 among the prior art generally is isosceles triangle, and isosceles triangle's summit sets up to 7 directions of slab angle hole position, and isosceles triangle's base is connected with heat transfer area 10, the utility model discloses a slab embossing mold utensil has increased the regional flow guide area of a part of trapezium again at isosceles triangle's the base avris in flow guide area. The diversion areas 8 are concave-convex alternated to form diversion lines.

The heat exchange area 10 is a corrugated structure with alternate convex and concave, the corrugations of the heat exchange area 10 are arranged in the same direction and are provided with two wave crests and a wave trough, a wave trough line formed by the wave troughs of all the corrugations is superposed with the central axis 12 of the plate, a wave crest line I13 formed by the wave crest on one side of the wave trough is a straight line parallel to the central axis 12, a wave crest line II 11 formed by the wave crest on the other side of the wave trough is in a circular arc shape, an included angle alpha between the wave crest line II 11 and one side of the plate edge and the central axis 12 is 55-65 degrees, an included angle beta between the wave crest line II 11 and the central axis 12 is 40-50 degrees, an included angle beta between the wave crest line I13 and the central axis 12 of the central axis 12 is equal to the included angle beta, and an included angle theta between the wave crest line.

Preferably, the angle α is 60 °, the angle β is 45 °, and the angle θ is 30 °.

The end points of the two ends of the peak line II 11 and the peak line I13 correspond to the two end points of the upper bottom of the trapezoidal flow guiding area.

The sealing groove 9 is a groove on the plate, a rib is arranged on the die, and the included angle lambda between the inclined edge of the folded curve of the side edge part of the sealing groove 3 and the straight edge is 125-135 degrees.

Preferably, the angle λ between the oblique side of the folded-back curve of the lateral portion of the sealing slot 3 and the straight side is 130 °.

The upper die can be set as a female die, the upper end surface of the middle die is a male die, the lower end surface of the middle die is a female die, and the lower die is a male die. Be equipped with the spacing platform 14 of slab on the up end of well mould and lower mould, put into the spacing platform 14 of slab with the slab, start hydraulic means, well mould slides from top to bottom through limiting plate 4 is spacing, compresses tightly the compression of back spring 3, and two slabs are suppressed simultaneously between last mould 1 and well mould 2, well mould 2 and lower mould 5, promote production efficiency. After the pressure is released, the middle die 2 is bounced up by the spring 3.

Claims

1. A double-sided pressing die for heat transfer plates is characterized by comprising an upper die, a middle die, a lower die, a spring and a limiting plate, wherein the lower die is installed on a lower table top of a hydraulic device, the limiting plate is longitudinally fixed on the lower table top of the hydraulic device, the middle die is in sliding connection with the limiting plate, the spring is arranged between the middle die and the lower die, the upper die is installed on an upper table top of the hydraulic device, and plate pressing structures of the upper die, the middle die and the lower die comprise a flow guide area, a heat exchange area and a sealing groove; one part of the flow guide area is a triangular area, the other part of the flow guide area is a trapezoidal area, and the two areas are connected at the same bottom edge; the sealing groove comprises an angle hole part and a side part, and the side part is of a folded-back curve structure; the heat exchange area is of a non-uniform corrugated structure.

2. A double-sided pressing mold for heat transfer sheets as claimed in claim 1, wherein the corrugations of the heat transfer zone are arranged in the same direction, and have two peaks and one valley, the valley line formed by all the valleys of the corrugations coincides with the central axis of the sheet, the peak line i formed by the peak on one side of the valley is a straight line parallel to the central axis, the peak line ii formed by the peak on the other side of the valley is a circular arc, the included angle α between the central axis and the ripple line between the peak line ii and the central axis is 55 to 65 °, the included angle β between the central axis and the ripple line on the side of the peak line ii close to the central axis is 40 to 50 °, the included angle β between the central axis and the included angle β between the central axis and the peak line i and the central axis are equal to the included angle β, and the included angle θ between the peak line i and.

3. A double-sided pressing die for a heat transfer plate as recited in claim 1 wherein an angle λ between a hypotenuse of a folded-back curve of the seal groove side edge portion and a straight edge is 125 ° to 135 °.