KR20180131026A - Method for manufacturing heat panel of 4-side opend multi-pass heat exchanger - Google Patents

Abstract

The present invention relates to a multi-pass heat exchanger, which includes: a plurality of heat plates alternately stacked up between an upper head and a lower base; side plates mounted on four sides of the heat plate. A hot fluid having slurry and a cold fluid pass between the heat plates stacked to exchange heat. More specifically, the method for manufacturing the heat plate of the 4-side open multi-pass heat exchanger includes: forming the roughness-shaped furrow part through a press process; and bonding the suds to the one surface having the roughness-shaped furrow. As described above, according to the present invention, in the method for manufacturing the heat plate of the 4-side open multi-pass heat exchanger, the space between the stacked heat plates is widened as the studs protrude from one surface of each heat plate, so various types of fluids are used. In addition, less failure may be caused by the fluid passage clogged due to the slurry. In addition, the roughness-shaped furrow is formed in the one surface of the heat plate, thereby improving the heat transfer efficiency and the pressure-resistance of the heat plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-pass heat exchanger,

The present invention relates to a method for manufacturing a heat transfer plate of a slope open multi-pass heat exchanger, and more particularly, to a heat transfer efficiency and a pressure resistance of a heat transfer plate, Open multi-pass heat exchanger according to the present invention.

A heat exchanger is a device that transfers the heat of a fluid to another fluid and performs functions such as heating, cooling, condensation and evaporation, and is widely used throughout the industry.

Because it is used in many industrial fields, the kinds of fluids applied are also very diverse, and various heat exchangers are used in many industrial fields and handle various fluids.

A heat exchanger that handles fluids containing sludges, slurries, fibers, and particulate loaded in processes such as petrochemical, fine chemical, steelmaking, smelting and paper making is used. The spiral heat exchanger is used in most of the heat exchangers. However, due to the problems caused by the contamination and the clogging, there are many difficulties.

Therefore, the problem is solved by using a plate heat exchanger.

A related art related to a plate heat exchanger is disclosed in Japanese Unexamined Patent Application Publication No. 2004-0065286, wherein a plurality of corrugations extend in a first direction and extend in a first direction parallel to the vertical line of the plate, A heat exchange substrate for a plate heat exchanger having a rotating shaft, wherein the plate includes at least a second region with corrugations and corrugations and a plurality of corrugations extending in a second direction, And a contour coinciding with each virtual fixed contour at a second rotational position of the plate rotated by 90 °.

Another prior art is a heat transfer plate having a pair of first flange surfaces bent to one side from a heat transfer surface of a quadrangular plate and a pair of second flange surfaces bent in an opposite direction to the heat transfer plate in Patent Document 0865115; A welding sealing line is formed by welding a flange surface of a pair of heat transfer plates disposed to face each other in an mirror image, and an inner passage is formed along the welding sealing line, and an outer groove intersecting at right angles with the inner passage is provided on the heat transfer surface An electrothermal shell; A heat transfer assembly in which the heat transfer shells are laminated in multiple layers to form a second fluid passage between the plurality of heat transfer shells at right angles to the first fluid passage formed by the internal passages to perform heat exchange; A frame portion having a plurality of support beams connecting between a pair of sealing panels facing opposite outer surfaces of the heat transfer assembly; And a second elastic portion provided between the sealing panel and the heat transfer assembly and having a second elastic portion provided between the support beam and the heat transfer assembly to absorb thermal expansion of the heat transfer assembly and prevent leakage of the supply fluid. A plate heat exchanger including a heat exchanger is registered and disclosed.

However, in the conventional plate type heat exchanger, the heat transfer plate has a wrinkle up and down and laminated so that the space through which the sludge can pass is narrow, which is disadvantageous for sludge use.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a multi-pass heat exchanger having a plurality of studs protruding from a surface of a heat transfer plate, The present invention provides a method for manufacturing a heat transfer plate.

A plurality of heat transfer plates stacked on top of a head and a lower base of the upper part of the present invention and between a head and a base of the upper part of the upper part of the present invention, and side plates provided on slopes of the heat transfer plates, And a cool fluid passing through the heat exchanger, wherein the heat transfer plate is formed by press working to form a concave-convex wrinkle portion; And joining a plurality of studs to one surface of the corrugated wrinkle-shaped portion.

As described above, in the method of manufacturing a heat transfer plate of a slope open multi-pass heat exchanger according to the present invention, a plurality of studs are protruded on one surface of a heat transfer plate, and a space between the heat sinks is wide and various fluids can be used. And it is also possible to improve the heat transfer efficiency and the pressure resistance of the heat transfer plate because the corrugated portion is formed on one surface of the heat transfer plate.

Fig. 1 is a component separating view of a slope open multi-pass heat exchanger using a heat transfer plate having a stud formed therein.
FIG. 2 is a perspective view of a heat transfer plate of a slope open multi-pass heat exchanger using a heat transfer plate having studs of the present invention as viewed from above. FIG.
3 is an enlarged perspective view of a portion of an upper side of a heat transfer plate of a slope open multi-pass heat exchanger using a heat transfer plate having studs of the present invention.
4 is a perspective view of a heat transfer plate of a slope open multi-pass heat exchanger using a heat transfer plate having studs according to the present invention as viewed from below.
FIG. 5 is an enlarged perspective view of a portion of a lower side of a heat transfer plate mounted in a slope open multi-pass heat exchanger using a heat transfer plate having studs of the present invention. FIG.
6 is a view showing the state of use of a baffle mounted in a slope open multi-pass heat exchanger using a heat transfer plate having studs of the present invention.
FIG. 7 is a perspective view showing a fastening relationship between a corner lining and a corner girder of a slope open multi-pass heat exchanger using a heat transfer plate having studs of the present invention. FIG.
8 is a partial enlarged detail view of Fig. 7;
9 is a plan schematic diagram of an edge lining of a slope open multi-pass heat exchanger using a heat transfer plate having studs of the present invention.
10 is a detailed enlarged view of a portion of Fig. 9;
11 is a plan view of an edge lining of a slope open multi-pass heat exchanger using a heat transfer plate formed with studs of the present invention.

A plurality of heat transfer plates 1 stacked on top of the head 18 and the lower base 19 of the present invention and between the upper head 18 and the base 19; And a slope open multipass heat exchanger which is composed of the side plates 10, 11, 12 and 13 and through which the hot fluid H containing the slurry and the cold fluid C are exchanged through the plurality of stacked heat transfer plates 1 The heat transfer plate 1 is formed in a first step of forming a concave-convex wrinkle portion 1c by press working; And a plurality of studs (s) are joined to one surface of the concavo-convex wrinkle portion (1c).

Both side surfaces of the heat transfer plate 1 are bent upward to form a side surface 1b and the end portion of the side surface 1b is bent outwardly to form a flange surface 1a that is horizontal to the upper surface of the heat transfer plate 1 , And the stud (S) is formed on the upper surface of the heat transfer plate (1).

The corrugated portion 1c of the convexo-concave shape formed on the heat conductive plate 1 is formed with a rhombic inner corrugated portion 1-1 having apexes at the centers of the four sides of the heat conductive plate 1, 1-1 are formed on the respective sides of the heat conductive plate 1 in the direction of the vertex of the heat conductive plate 1.

The inner wrinkle 1-1 and the outer wrinkle 1-2 are formed to be wrinkled so as to be orthogonal to each other, so that the shape is maintained more firmly.

A plurality of heat transfer plates 1 stacked on top of the head 18 and the lower base 19 of the present invention and between the upper head 18 and the base 19; And a slope open multi-pass system in which a hot fluid (H) containing a slurry and a cold fluid (C) are passed through and heat exchanged between the plurality of stacked heat transfer plates (1) In the heat exchanger, the heat transfer plate (1) is provided with corrugated irregularities, and a plurality of studs (S) protrude from one surface.

A baffle is provided between the side plates 10 and 12 on which the hot fluid H moves and the heat transfer plate 1 so that the hot fluid H flowing through the inlet port 22 is supplied to the plurality of heat transfer plates 1 And the hot fluid H which has branched into the heat transfer plates 1 is joined together by the baffle B and discharged to the outside through the outflow pipe 23.

A baffle is provided between the side plates 11 and 13 on which the cool fluid H moves and the heat transfer plate 1 so that the cool fluid C introduced through the inlet port 28 is supplied to the plurality of heat transfer plates 1 And the coolant fluid C that has branched and flows between the heat transfer plates 1 is again joined by the baffle B and discharged to the outside through the outflow pipe 29. [

Hereinafter, a slope open multi-pass heat exchanger using a heat transfer plate having studs according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a component view of a slope open multi-pass heat exchanger using a heat transfer plate on which a stud is formed.

As shown in Fig. 1, the slope open multi-pass heat exchanger includes a top head 18 and a bottom base 19, and a plurality of heat transfer plates 1 in plate form between the top head 18 and the base 19, And is designed to have a structure in which the fluid flows into the space between the heat transfer plates 1. [

At this time, the fluid flowing between the heat transfer plates 1 is a principle in which heat is exchanged between fluids by flowing in a direction in which two kinds of fluids having different temperatures are orthogonal to each other.

In other words, the flow of the fluid is configured to have a cross-flow type of flow, and when the baffle that constitutes the pass is attached, the flow of the multi-pass causes a counter-flow flow Temperature proximity is possible to 3 degrees or less.

Baffles are provided between the side plates 10 and 12 on which the hot fluid H moves and the heat transfer plate 1 so that the hot fluid H introduced through the inlet port 22 flows through the plurality of heat transfer plates 1, and the hot fluid H which has branched into the heat transfer plates 1 is joined together by the baffle B and discharged to the outside through the outflow pipe 23.

A baffle is provided between the side plates 11 and 13 on which the cool fluid H moves and the heat transfer plate 1 so that the cool fluid C introduced through the inlet 28 flows into a plurality of The cold fluid C which has branched and flows between the heat transfer plates 1 and flows between the heat transfer plates 1 is again joined together by the baffle B and discharged to the outside through the outflow pipe 29. [

The baffle B for branching and joining the hot fluid H and the baffle B for branching and joining the cold fluid C may be provided together or separately.

Even when the flow rate difference between the two fluids is large, a pass is applied to the side having a small flow rate, so that an appropriate flow rate can be obtained and a high heat transfer performance can be obtained.

This makes it possible to prevent fouling by low flow rates.

On the other hand, upper and lower lining (20, 21) for maintaining airtightness when a fluid flows are mounted between the head (18), the heat transfer plate (1), the base (19) and the heat transfer plate Side gaskets 14, 15, 16, 17 are mounted between the side plates 10, 11, 12, 13 so that the airtightness is further maintained.

The upper and lower lining 20 and 21 and the side gaskets 14, 15, 16 and 17 may be selected from metal, synthetic resin and synthetic rubber.

The heat transfer plate 1 may be selected from among SUS, Ti, SM0254, and LSX so as to prevent corrosion when the fluid containing the slurry flows, and the studs S are also used for the welding with the heat transfer plate 1 Use materials.

FIG. 2 is a perspective view of a heat transfer plate of a slope open multi-pass heat exchanger using a heat transfer plate having studs according to the present invention, and FIG. 3 is an enlarged perspective view of a portion of an upper side of a heat transfer plate of a slope open multi-pass heat exchanger using a heat transfer plate, FIG. 4 is a perspective view showing a heat transfer plate of a slope open multi-pass heat exchanger using a heat transfer plate having studs according to the present invention, FIG. 5 is a partial side view of a heat transfer plate mounted on a slope open multi- Is an enlarged perspective view.

As shown in FIGS. 2 to 5, the heat transfer plate 1 of the slope open multi-pass heat exchanger of the present invention is formed with concave and convex wrinkles, and a plurality of studs S are protruded from one surface.

More specifically, both side surfaces of the heat transfer plate 1 are bent upward to form a side surface 1b, and the end portion of the side surface 1b is bent outwardly to be connected to a flange surface 1a And the stud S is formed on the upper surface of the heat transfer plate 1. [

A pair of the heat transfer plates 1 are opposed to each other and a flange surface 1a is laminated so as to be in contact with each other so that a coolant fluid C or a flow path through which a hot fluid H flows is formed between the pair of heat transfer plates 1 .

And the studs S are fixed to the heat transfer plate 1 by stud welding.

Stud welding is a welding that generates an arc between the tip of a bolt,

Therefore, it has slope open type structure which has two to three times larger channel spacing (wide gap, more than 12mm) than the plate heat exchanger or shell-and-tube to allow various fluids to pass through without clogging,

Also, because of the multi-pass structure, the flow rate can be adjusted and the heat exchange performance is improved.

6 is a view showing the state of use of a baffle mounted on a slope open multi-pass heat exchanger using a heat transfer plate having studs of the present invention.

As shown in FIG. 6, the baffle B functions as a partition separating upper and lower spaces. The plurality of heat transfer plates 1 are installed as a unit so as to be vertically spaced apart from each other, ) Was allowed to flow in a space formed by a pair of baffles (B).

The baffle (B) is made of SUS, Ti, SM0254 or LSX which is the same material as the heat transfer plate (1) to prevent corrosion.

Particularly, in the baffle B, protruding grooves B1 are formed on side surfaces contacting with the heat transfer plate 1 so that the flange surfaces 1a of the heat transfer plates 1 stacked in pairs can be inserted, and the side plates 10, 11, 12, and 13 are separated from each other by a pair of wefts, and are compressed and welded to the inner surfaces of the side plates 10, 11, 12, and 13 so that airtightness can be maintained more efficiently.

More specifically, the baffle (B) will be described. The baffle (B) is a pair of corrugated plates in the form of a corrugated plate member. The corrugated plates are separated from each other by a pair of legs and contacted with the side plates (10, 11, 12, And the other side is formed such that the flange surface 1a of the heat transfer plate 1 can be inserted between the pair of corrugated plates.

This is to make the structure more rigid than when it is flat.

More specifically, the depth of the heat transfer plate 1 mounted on the uppermost and lowermost portions is set to be twice as large as the depth of the heat transfer plate 1 mounted in the middle.

In other words. The heat transfer plate 1 is provided with side plates 10, 11, 12 and 13 on both sides in the direction of flow of the fluid. The heat transfer plates 1 located in the middle are stacked one on top of the other, Fluid flows.

On the other hand, each of the heat transfer plates 1 located at the uppermost and lowermost portions of the heat transfer plate 1 has a plate-shaped head 18 and a base 19 respectively mounted on upper and lower sides of one heat transfer plate 1, 1, and the space between the base 19 and the heat transfer plate 10, the height of the side plates 10, 11, 12, 13 formed on the uppermost and lowermost heat transfer plates 1 11, 12, and 13 of the heat transfer plate 1 positioned at the middle, respectively, so that the space through which the fluid flows, that is, the upper and lower widths, can be the same.

The heat transfer plate 1 is formed by bending both side edges of a plate-like body, and bending the ends of the bent side edges back to the outside by 90 ° again to form a horizontal flange surface 1a. Is formed.

’형상이다.That is,

'Shape.

When the pair of heat transfer plates 1 are bonded to each other so that the flange surfaces 1a are in contact with each other, a passage through which the fluids C and H can flow is formed between the pair of heat transfer plates 1.

The flange surface 1a to which the pair of heat transfer plates 1 are joined is inserted into the projecting groove B1 of the baffle B so as to be bonded by welding.

On the other hand, when the pair of heat transfer plates 1 are laminated on the flange surfaces 1a, the side surfaces of the laminated heat transfer plates 1 are formed in a concave-convex shape.

FIG. 7 is a partial enlarged view of FIG. 7 showing the fastening relationship between the corner lining and the corner girder of the slope open multi-pass heat exchanger using the heat transfer plate of the present invention. FIG. Fig. 10 is an enlarged detail view of a portion of Fig. 9, and Fig. 11 is a plan view of an edge lining of a slope open multi-pass heat exchanger using a heat transfer plate on which a stud according to the present invention is formed.

7 to 11, the corner lining 2, 3, 4, 5 is formed so as to penetrate through the inside in the vertical direction, wherein two adjacent sides are opened and the remaining two sides are laminated Convex portions U1 corresponding to the shape of the heat transfer plate 1 are formed.

In more detail, the edge lining 2, 3, 4, 5 is bent in the inward direction so that the corner girders 2, 3, 4, 5 are inserted into the inside of the corner lining 2, 6, 7, 8, and 9 are inserted in the upper or lower direction of the corner lining 2, 3, 4, 5 and fastened to each other so as not to be easily separated or disassembled.

As shown in FIG. 10, a sealing plate A is inserted in a portion where the corner lining 2, 3, 4, 5 and the side plates 10, 11, 12, 13 are in contact with each other.

The sealing plate (A) is made of metal or synthetic resin.

11, the edge lining 2, 3, 4 and 5 have flange surfaces LP1 and RP1 on one side, respectively, and a left side plate LP and a right side plate RP, And a hoisting plate U having a concave portion U1 formed between the flange surfaces LP1 and RP1 of the left side plate LP and the right side plate RP is inserted and adhered to each other.

This is to make the edge lining 2, 3, 4 and 5 easier to manufacture than to be integrally manufactured by dividing into the left side plate LP and the right side plate RP.

On the other hand, SUS, Ti, SM0254, and SUS304 are added to the corner lining 2, 3, 4 and 5, the corner girders 6, 7, 8 and 9 and the portion directly contacting the fluid in the heat transfer plate 1 and the baffle B, LSX was selected to prevent corrosion.

As described above, in the method of manufacturing a heat transfer plate of a slope open multi-pass heat exchanger according to the present invention, a plurality of studs are protruded on one surface of a heat transfer plate, and a space between the heat sinks is wide and various fluids can be used. And it is also possible to improve the heat transfer efficiency and the pressure resistance of the heat transfer plate because the corrugated portion is formed on one surface of the heat transfer plate.

1. Heat transfer plate 1a. Flange surface 1b. side
1c. Wrinkles 1-1. Inner wrinkles 1-2. The outer-
2, 3, 4, 5. Edge lining
6, 7, 8, 9. Corner girder
10, 11, 12, 13. Shroud
14, 15, 16, 17. Side gasket
18. Head
19. Base
20. Top lining
21. Lower lining
22. Inlet
23. Outlet
24. Inlet
25. Outlet
26, 27, 28, 29. Support frame
A. Closed Plate
B. Beppel B1. Projecting groove
LP. Left plate RP. Right side plates LP1 and RP1. Flange surface
S. Stud U. Plate U1. Uneven portion

Claims (3)

A plurality of heat transfer plates 1 stacked on top of the upper head 18 and the lower base 19 and between the upper head 18 and the base 19 and a side plate Wherein the hot fluid (H) containing the slurry is passed through the plurality of stacked heat transfer plates (1) and the cold fluid (C) to perform heat exchange, the sloped open multi-pass heat exchanger comprising:
The heat transfer plate 1 is formed by pressing a first step of forming a concave-convex wrinkle portion 1c;
A step (2) of joining a plurality of studs (s) to one surface of the concavo-convex wrinkle portion (1c);
Wherein the heat exchanger is manufactured in a process of manufacturing a heat transfer plate of a slope open multi-pass heat exchanger.
The method according to claim 1,
Both side surfaces of the heat transfer plate 1 are bent upward to form a side surface 1b and the end portion of the side surface 1b is bent outwardly to form a flange surface 1a that is horizontal to the upper surface of the heat transfer plate 1 , And the stud (S) is formed on the upper surface of the heat transfer plate (1).
3. The method of claim 2,
The corrugated portion 1c of the convexo-concave shape formed on the heat transfer plate 1 is formed in a rhombic-shaped inner corrugated portion 1-1 having vertexes at the centers of four sides of the heat transfer plate 1, -1) is formed at each side of the heat transfer plate (1) in the direction of the vertex of the heat transfer plate (1).

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