CN105526814A - Heat exchange plate used for welding type plate heat exchanger, heat exchange plate pair, heat exchange plate set and welding type plate heat exchanger - Google Patents
Heat exchange plate used for welding type plate heat exchanger, heat exchange plate pair, heat exchange plate set and welding type plate heat exchanger Download PDFInfo
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- CN105526814A CN105526814A CN201610077335.2A CN201610077335A CN105526814A CN 105526814 A CN105526814 A CN 105526814A CN 201610077335 A CN201610077335 A CN 201610077335A CN 105526814 A CN105526814 A CN 105526814A
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- heat exchanger
- flanging
- exchanger plates
- heat exchange
- plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat exchange plate used for a welding type plate heat exchanger, a heat exchange plate pair, a heat exchange plate set and a welding type plate heat exchanger. The corner of the heat exchange plate horizontally extends to form a transverse connecting part in a diagonal line direction of the corner; one side, opposite to the heat exchange plate, of the transverse connecting plate is bent to form a first connecting folding side; other two sides of the transverse connecting part are bent to form a first folding side and a second folding side; adjacent side edges of the heat exchange plate are bent to form a second connecting folding side and a third connecting folding side; and the heat exchange plate is superposed to form a medium runner which is sealed in two ends and is through in other two ends. According to the heat exchange plate provided by the invention, the transverse connecting part is additionally arranged to have guide effect to a fluid, and a flow dead zone is absent in the runner, so that the heat exchange efficiency of the heat exchange plate is improved, and influences of scaling and corrosion to the heat transfer efficiency and the service life of the heat exchange plate are reduced; a right-angled connecting mode of adjacent two sides on the corner of the heat exchange plate is changed, so that a deformation phenomenon generated when the heat exchange plate bears medium pressure difference is avoided; and a processing process for the heat exchange plate is simple, and is high in realization degree.
Description
Technical field
The present invention relates to plate type heat exchanger field, particularly relate to a kind of heat exchanger plates for welded type plate type heat exchanger.
Background technology
At present, plate type heat exchanger has become efficient, compact heat transmission equipment, and a large amount of is applied in industry, and its development experienced by the history of a century.Wherein for adapting to high temperature, high pressure operating mode and the welded plate type heat exchanger researched and developed, further expand the application of plate type heat exchanger.
Announced about in the patent of welded plate type heat exchanger, patent CN1606682A, a kind of heat exchanger plates of welding type heat exchanger is disclosed in CN202057615U, the corner of this heat exchanger plates is provided with the tab arrangement connected for heat exchanger plates, by assembling between this structure heat exchanger plates, but the intensity of tab itself is subject to the restriction of heat exchanger plates thickness of slab, be difficult to ensure higher bonding strength, in the course of work, under the fluid pressure difference effect of both sides, heat exchanger plates is by force unbalance, the free degree because of heat exchanger plates is subject to the constraint with tab connected components, heat exchanger plates can deflect around heat exchanger plates center, cause between the coupled parts of the tab of heat exchanger plates and produce larger active force, in longtime running, tab is in high-stress state, tab is easily caused to tear inefficacy, equipment is caused not use, simultaneously when the later stage carries out disassembly, cleaning or maintenance to product, heat exchanger plates tab could be separated with its attaching parts by the active force that larger reaction force need be used to overcome between the coupled parts of heat exchanger plates, add the difficulty of the disassembly, cleaning of product later stage or maintenance, although the coupled parts of tab connect by penetrating welding, because welding the restriction in space, cause becoming at the root of tab adopting this tab to carry out the weak location connected, in addition tab arrangement need can reach required machining accuracy through repeatedly overturning process, processing technology is complicated, machining accuracy is difficult to ensure.
A kind of heat exchange welded plate type heat exchanger for welding type heat exchanger is disclosed in patent CN103791739A, heat exchanger plates disclosed in it be welded to connect the effect reaching and seal and be connected between frame bent plate, in cause fluid not flow into region that heat exchanger plates is connected with frame bent plate, cause and form flow dead in this region, reduce heat exchanger plates surface heat and exchange utilization rate, increase the weight of the generation of the corrosion at flow dead place and the phenomenon of fouling simultaneously, in addition, a kind of plate disclosed in patent CN104132567A, the adjacent two edges of plate body are provided with flanged structure, and by connection that connecting portion spatially interlocks, flanged structure on this plate achieves being welded to connect between plate, but this weld seam is lap weld, bearing in pressure medium situation, lap weld carrying shear stress, very easily there is tearing of weld seam, cause welding seam failure, lap weld corrosion phenomenon is difficult to avoid simultaneously, affect the whole service life of equipment, in addition, connecting portion is the boundary position of cold and hot side medium differential pressure, but connecting portion is subject to the restriction of sheet and vertical direction compact dimensions, be difficult to avoid bearing under differential pressure conditions, the generation of this connecting portion distortion, simultaneously, the processing technology of this flange and connecting portion structure is poor, machine-shaping difficulty, processing cost is higher.
Summary of the invention
The present invention proposes a kind of heat exchanger plates for welded type plate type heat exchanger, heat exchanger plates to, plate group and welded type plate type heat exchanger, heat exchanger plates heat exchange process can not be participated in solve the above-mentioned heat exchanger plates syndeton for welding type heat exchanger, reduce heat exchanger plates heat and transmit space, and the intensity connected is low, the form of being welded to connect is not suitable for the problem used in welded plate type heat exchanger.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
For a heat exchanger plates for welded type plate type heat exchanger, described heat exchanger plates (1) comprises main heat exchange district (6), it is characterized in that,
Heat exchanger plates edge is provided with syndeton, and syndeton comprises lateral connection portion (2), first and connects flanging (3), the first flanging (33), the second flanging (34);
The edge of heat exchanger plates (1) forms lateral connection portion (2) along its diagonal horizontal-extending;
The open end in lateral connection portion (2) is bent to form the first connection flanging (3);
The dual-side in lateral connection portion (2) bends corresponding formation first flanging (33), the second flanging (34) respectively;
The dual-side of the heat exchanger plates that this edge is adjacent is bent to form the second connection flanging (4), the 3rd respectively and connects flanging (5);
Second connects flanging (4) is connected with the first flanging (33) transition, and the 3rd connects flanging (5) is connected with the second flanging (34) transition.
Further, the corner of syndeton and heat exchanger plates is formed in one structure, and lateral connection portion utilizes the unfilled corner part of this corner to stretch out.
Further, described lateral connection portion is the quadrangle protuberance of the diagonal symmetry along this heat exchanger plates corner, and the straight flange of open end is vertical with the diagonal at this place, corner of heat exchanger plates.
Further, four corners of described heat exchanger plates are equipped with described syndeton.
Further, the first flanging (33) is reverse each other with the overbending direction of the second flanging (34), and correspondingly, the second connection flanging (4) is connected flanging (5) overbending direction with the 3rd is reverse each other.
Further, with heat exchanger plates place plane for horizontal direction, its vertical direction is vertical direction,
First connects flanging (3), the first flanging (33), the second flanging (34), second connects flanging (4), the 3rd connection flanging (5) is vertical setting,
First flanging (33) is reverse each other with the overbending direction of the second flanging (34), and correspondingly, the second connection flanging (4) is connected flanging (5) overbending direction with the 3rd is reverse each other;
The overbending direction that first flanging (33) and second connects flanging (4) is identical, first flanging (33) end is connected flanging (4) end with described second is connected, first flanging (33) the other end is connected flanging (3) end points with first intersects at the edge of lateral connection portion (2), and second to connect flanging (4) equal with the height of the first flanging (33);
The overbending direction that second flanging (34) and the 3rd connects flanging (5) is identical, second flanging (34) end is connected flanging (5) end with the 3rd is connected, its the other end is connected flanging (3) end points with first intersects at the edge of lateral connection portion (2), and the height that the second flanging (34) and the 3rd connects flanging (5) is identical;
First height and second connecting flanging (3) connects flanging (4) and the 3rd, and to connect the height sum of flanging (5) equal.
Further, the transverse width of described lateral connection portion (2) is 3 ~ 50mm.
Further, the described first height connecting flanging (3) is 2 ~ 30mm.
Further, described first flanging (33) is connected flanging (4) and is connected by transition part (15) with described second, described second flanging (34) is connected flanging (5) with the described 3rd and is connected by transition part (15); Transition part (15) is arc-shaped or hypotenuse shape.
Further, heat transfer zone is provided with first convex lean (61), second convex lean (71), the shape of first convex lean (61) and second convex lean (71) is have lean and ripple struction that is paddy, and the cross section of this ripple struction is trapezoidal or triangle or circular arc; Heat transfer zone structure adopts any one or any combination in following four kinds of schemes or all:
Scheme 1: between the bearing of trend of described second convex lean (71) and the bearing of trend of described first convex lean (61), angle is 30 ~ 150 °;
Scheme 2: the surface area of described second convex lean (71) accounts for 2 ~ 50% of total heat exchange area of described heat exchanger plates (1).
Scheme 3: to be interrupted along bearing of trend at described first convex ridge (61) and described second convex ridge (71) and to be provided with recess (16), this recess (16) to ranked first between convex lean (61) and interlaced arrangement between adjacent two second convex lean (71) adjacent two;
Scheme 4: the degree of depth of described recess (16) is 0 ~ 100% of described first convex lean (61) height;
Scheme 5: the edge level of described main heat exchange district (6) extends to form extension (9), described second connection flanging (4) is connected flanging (5) and is connected with described heat exchanger plates (1) respectively by described extension (9) with the 3rd, described extension (9) is communicated with described lateral connection portion (2).
Further, be provided with reinforcement (8) in described lateral connection portion (2), described reinforcement (8) is highly equal to or less than the height of the first connection flanging (3).
A kind of heat exchanger plates pair, is characterized in that,
Heat exchanger plates is to comprising the first heat exchanger plates (12) and the second heat exchanger plates (13), and the first heat exchanger plates (12) and the second heat exchanger plates (13) all adopt above-mentioned a kind of heat exchanger plates for welded type plate type heat exchanger;
First heat exchanger plates and the second heat exchanger plates each other 180 ° overturn after weld, the first heat exchanger plates is in below, and up, the two is interlocked the second heat exchange version;
First top connecting flanging (3) of described first heat exchanger plates (12) is connected flanging (3) bottom with first of the second heat exchanger plates (13) is docked and is welded to connect;
First flanging (33) top of described first heat exchanger plates (12) is docked with the bottom of second flanging (34) of the second heat exchanger plates (13) and is welded to connect;
A dielectric space is formed between the lateral connection portion of the first heat exchanger plates (12) and the lateral connection portion of the second heat exchanger plates (13);
Second top connecting flanging (4) of described first heat exchanger plates (12) is connected with the 3rd of described second heat exchanger plates (13) to dock bottom flanging (5) and is welded to connect;
Space between described first heat exchanger plates (12) with described second heat exchanger plates (13) is communicated with described dielectric space, forms medium runner (10) between plate.
A kind of plate package, is characterized in that,
Plate package comprise multiple stacked heat exchanger plates to multiple medium runner; Heat exchanger plates is to adopting above-mentioned a kind of heat exchanger plates pair, plate package comprises multiple heat exchanger plates to stacked multiple dielectric spaces, first of multiple lateral connection portion (2) connects flanging (3) and is welded to connect successively, form plate group connecting portion, the transverse ends of plate group connecting portion is respectively equipped with connecting end portion (32) for fixing;
Adjacent two heat exchanger plates between form connected space, be communicated with described dielectric space, form medium runner (11) between plate pair;
Medium runner comprises medium runner (11) between medium runner between plate (10) and plate pair.
A kind of welded type plate type heat exchanger, it adopts above-mentioned a kind of heat exchanger plates pair.
The advantage that the present invention has and good effect are:
(1), heat exchanger plates for welded type plate type heat exchanger of the present invention, set up lateral connection portion, the setting in lateral connection portion changes the right angle type of attachment on the adjacent both sides of heat exchanger plates corner, after the stacked formation plate package of multiple heat exchanger plates, lateral connection portion constitutes plate group connecting portion, this plate group connecting portion adds the contact area between the coupled attaching parts of heat exchanger plates, be welded to connect by the coupled parts of connecting end portion at the two ends of plate group connecting portion, form twice weld seam, the existence of this twice weld seam enhances bonding strength, avoid the generation of the metaboly of heat exchanger plates when bearing medium differential pressure, this lateral connection portion has guide functions to fluid, in the dielectric space that the lateral connection portion enabling segment fluid flow enter heat exchanger plates is formed, make in heat exchanger plates without flow dead, make use of heat exchanger plates surface to greatest extent and carry out exchange heat, improve the service efficiency on heat exchanger plates surface, can ensure that hot and cold side liquid is uniformly distributed on heat exchanger plates, the generation of the corrosion rate that the existence avoiding flow dead causes and fouling acceleration problem simultaneously, in addition the processing technology in lateral connection portion is simple, first flanging, the second flanging, second connect flanging and are connected flanging with the 3rd by once bending technique and plastic, simplify process, improve the efficiency of processing, machining accuracy can be well controlled simultaneously.
(2), the heat exchanger plates for welded type plate type heat exchanger of the present invention, heat exchanger plates connects by second flanging to be connected flanging docking welding with the 3rd and taps into capable connection with the first butt welding is connected between flanging, the leakage problem making butt weld avoid crevice corrosion to cause, the bearing capacity of this butt weld is simultaneously strong, improve the bonding strength of heat exchanger plates, add the bearing capacity of heat exchanger plates to, plate package and heat exchanger.
(3) heat exchanger plates for welded type plate type heat exchanger of the present invention, the first convex lean bearing of trend in guiding region, heat exchanger plates corner second convex lean bearing of trend and main heat exchange district at angle, guide functions can be played to fluid, and the formed precision of heat exchanger plates can be improved.
Accompanying drawing explanation
Fig. 1 is the schematic three dimensional views of an embodiment of heat exchanger plates for welded type plate type heat exchanger;
Fig. 2 is the lateral connection portion schematic diagram of an embodiment of heat exchanger plates for welded type plate type heat exchanger;
Fig. 3 is the front view of an embodiment of heat exchanger plates for welded type plate type heat exchanger;
Fig. 4 is the schematic diagram of the embodiment connected for the heat exchanger plates of welded type plate type heat exchanger;
Fig. 5 is the schematic diagram of an embodiment of heat exchanger plates recess for welded type plate type heat exchanger;
Fig. 6 is the convex lean bearing of trend angle schematic diagram of the convex lean bearing of trend in guiding region, heat exchanger plates corner and main heat exchange district for welded type plate type heat exchanger;
Fig. 7 is the schematic diagram of circular arc for the convex lean cross section in guiding region, heat exchanger plates corner of welded type plate type heat exchanger.
In figure:
1-heat exchanger plates, 2-lateral connection portion, 3-first connects flanging, 31-joint face, 32-connecting end portion, 33-first flanging, 34-second flanging, 4-second connects flanging, 5-the 3rd connects flanging, 6-main heat exchange district, 61-first convex ridge, guiding region, 7-corner, 71-second convex ridge, 8-reinforcement, 9-extension, medium runner between 10-plate, medium runner between 11-plate pair, 12-first heat exchanger plates, 13-second heat exchanger plates, another heat exchanger plates pair of 14-, 15-transition part, 16-recess.
Detailed description of the invention
Now in conjunction with the drawings and the specific embodiments the present invention is further described:
As depicted in figs. 1 and 2, a kind of heat exchanger plates for welded type plate type heat exchanger, described heat exchanger plates 1 limits main heat exchange district 6, the edge of heat exchanger plates 1 forms lateral connection portion 2 along its diagonal horizontal-extending, the side just right with heat exchanger plates 1, lateral connection portion 2 is bent to form first and is connected flanging 3, the another both sides in lateral connection portion 2 are bent to form the first flanging 33 and the second flanging 34, heat exchanger plates 1 neighboring edge is bent to form the second connection flanging 4 and is connected flanging 5 with the 3rd, second connects flanging 4 is connected with the first flanging 33, 3rd connects flanging 5 is connected with the second flanging 34, the stacked formation closed at both ends of heat exchanger plates, the medium runner that another two ends are through,
Heat exchanger plates 1 of the present invention can be quadrangle, the transverse width in lateral connection portion 2 is 2 ~ 35mm, when being less than this value, the intensity in lateral connection portion 2 is less, and difficult forming, if be greater than this scope, the rigidity in lateral connection portion 2 is deteriorated, after bearing larger medium differential pressure, deformation tendency becomes large, concrete, for the heat exchanger plates 1 of 150 × 150mm specification, the width in lateral connection portion 2 can be about 10mm: for the heat exchanger plates 1 of 1000 × 1000mm specification, the width in lateral connection portion 2 can be about 30mm, first height connecting flanging 3 is 5 ~ 20mm, if the height of the first connection flanging 3 is less, the gap between plate can be caused too small, easily cause blockage problem, if the excessive height of the first connection flanging 3, shaping being difficult to realizes, and shaping precision is lower, concrete, for the heat exchanger plates 1 of 150 × 150mm specification, first height connecting flanging 3 can be about 4mm, for the heat exchanger plates 1 of 1000 × 1000mm specification, first height connecting flanging 3 can be about 5mm.
The forming direction that first flanging 33 and second connects flanging 4 is identical, one end is connected flanging 4 end with second is connected, its the other end is connected the intersect ends of flanging 3 in the edge in lateral connection portion 2 with first, second connection flanging 4 is equal with the length of the first flanging 33, the overbending direction that second flanging 34 and the 3rd connects flanging 5 is identical, one end is connected flanging 5 end with the 3rd is connected, its the other end is connected the intersect ends of flanging 3 in the edge in lateral connection portion 2 with first, the height that second flanging 34 and the 3rd connects flanging 5 is identical, first connects the length and second of flanging 3 connects flanging 4 and the 3rd to connect the height sum of flanging 5 equal, concrete, second to connect flanging 4 be that an edge of heat exchanger plates 1 is vertically upwards bent to form, and be connected with the first flanging 33, and both bend after height identical, the overbending direction that second diversion edges 34 and the 3rd connects flanging 5 is identical, one end is connected flanging 5 end with the 3rd is connected, its the other end is connected the intersect ends of flanging 3 in the edge in lateral connection portion 2 with first, the height that second flanging 34 and the 3rd connects flanging 5 is identical, concrete, 3rd to connect flanging 5 be that another edge of heat exchanger plates 1 is vertically bent to form downwards, and be connected with the second flanging 34, and both bend after height identical,
As shown in Figure 3,4, the first flanging 33 is connected flanging 4 and is connected by transition part 15 with second, the second flanging 34 is connected flanging 5 with the 3rd and is connected by transition part 15, and further, transition part 15 is arc-shaped or hypotenuse; This structure induction medium, when entering main heat exchange district 6, enters in lateral connection portion 2 simultaneously, avoids the existence of the flow dead, lateral connection portion 2 being positioned at corner, and arc transition form reduces the harm that transition part stress is concentrated simultaneously.
As shown in Figure 1,3, parallelly in main heat exchange district be provided with some first convex ridges 61, the edge of heat exchanger plates 1 limits guiding region, corner 7, parallelly in guiding region, corner 7 be provided with the second convex ridge 71, the bearing of trend of this first convex ridge 61 is parallel with a pair linea angulata direction of heat exchanger plates 1, at angle, the first convex height of lean 61 is identical with the second convex height of lean 71, and equals the height of the first connection flanging 3 for the second convex lean 71 and first convex bearing of trend of lean 61, the second convex ridge 71 that guiding region, corner 7 is arranged has water conservancy diversion, under the effect of guiding region, corner 7, enable the fluid of diverse location with evenly flow velocity enter in main heat exchange district 6, reduce too low because of fluid velocity local velocity or the too high plate local scaling that causes or corrosion harm, improve the formed precision of heat exchanger plates simultaneously, angle between the first convex lean 61 and second convex bearing of trend of lean 71 is 30 ~ 150 °, such as 30 °, 40 °, 45 °, 50 °, 60 °, 90 °, 100 °, 120 °, 150 °, as shown in Figure 6, angle between the first convex lean 61 and second convex bearing of trend of lean 71 is as shown in β, in FIG, angle between the first convex lean 61 and second convex bearing of trend of lean 71 is 90 °, in figure 6, angle between the first convex lean 61 and second convex bearing of trend of lean 71 is 60 °, the ratio that the second convex developed area of lean 71 accounts for total heat exchange area of heat exchanger plates 1 is 2 ~ 50%, bearing of trend angle and developed area ratio two parameter jointly determine and control heat exchanger plates punch forming process formed precision, bearing of trend angle is excessive, first convex lean 61 with the second convex bearing of trend of lean 71 more close to parallel, too small second convex lean 71 area occupied of developed area ratio are less, be difficult to guarantee first convex lean 61 suitable with the springback capacity of Fei Qi bearing of trend along the springback capacity of its bearing of trend, the shaping rear one-tenth of heat exchanger plates is caused to be distorted distortion along its diagonal, for the heat exchanger plates 1 that specification is 150 × 150mm, the ratio that the second convex developed area of lean 71 accounts for total heat exchange area of heat exchanger plates 1 can be: 18%, 32% and 50%, the ratio specification convex developed area of lean 71 of heat exchanger plates 1, second that is 1000 × 1000mm being accounted for total heat exchange area of heat exchanger plates 1 can be: 2%, 8%, 18%, 32% and 50%.
First convex ridge 61 and the second convex ridge 71 are provided with recess 16, between this recess 16 ranked first convex lean 61 adjacent two and in adjacent two second convex lean 71 interlaced arrangement along bearing of trend interruption; The ripple struction form of lean and paddy convex lean, first heat exchanger plates 12 and the second heat exchanger plates 13 to form between plate pair after medium runner 10, lean and leanly to offset, form the netted runner with multiple contact, when fluid flows in this runner, experience runner enlargement and contraction repeatedly, when Reynolds number is greater than 300, namely fluid is in turbulence state, heat transfer efficiency is high, the setting of recess 16 simultaneously, effectively prevents controlling the first convex ridge 61 and the springback capacity of the second convex ridge 71 in forming process, ensure that the formed precision of heat exchanger plates; The degree of depth of recess 16 is 0 ~ 100% of the first convex lean 61 height, concrete, concrete cross sectional shape according to first convex lean 61 and second convex lean 71 of heat exchanger plates 1 and the second convex developed area of lean 71 account for the ratio of the total heat exchange area of heat exchanger plates 1, recess 16 can be highly the plane of 0mm, it highly also can be first convex lean 61 high by 50%, as as shown in Fig. 1,3,5 and 6, recess 16 is be highly the plane of 0mm.
As shown in Figure 3, for the second connection flanging 3 provides more sufficient processing space with the 3rd processing being connected flanging 4, the edge level in main heat exchange district 6 extends to form extension 9, and the second connection flanging 4 is connected flanging 5 and is connected with heat exchanger plates 1 respectively by described extension 9 with the 3rd.
As shown in Figure 1, in order to increase the intensity in lateral connection portion 2, prevent the distortion of lateral connection portion 2 when bearing load, reinforcement 8 is provided with in lateral connection portion 2, the cross section of this reinforcement 8 is at least one in circular arc, trapezoidal, triangle, can according to the shape of cross section of the use pressure of heat exchanger plates 1 and difficulty of processing determination reinforcement 8, simultaneously in order to prevent the flow dead forming fluid media (medium) at place of lateral connection portion 2, it is highly equal to or less than the height of the first connection flanging 3.
A kind of heat exchanger plates pair, comprise the first heat exchanger plates 12 and the second heat exchanger plates 13, first of first heat exchanger plates 12 connects the top of flanging 3 is connected flanging 3 bottom with first of the second heat exchanger plates 13 and docks and be welded to connect, first flanging 33 top of the first heat exchanger plates 12 is docked with the bottom of the second flanging 34 of the second heat exchanger plates 13 and is welded to connect, between the lateral connection portion 2 of the first heat exchanger plates 12 and the lateral connection portion 2 of the second heat exchanger plates 13, form a dielectric space 21;
Second of first heat exchanger plates 12 connects the top of flanging 4 and is connected with the 3rd of the second heat exchanger plates 13 to dock bottom flanging 5 and is welded to connect, and is communicated with, and is communicated with dielectric space 21, medium runner 10 between formation plate between the first heat exchanger plates 12 with the second heat exchanger plates 13;
A kind of plate package, comprises stacked multiple dielectric spaces 21, and first of described multiple lateral connection portion 2 connects flanging 3 and is welded to connect successively, and form a plate group connecting portion 22, the transverse ends of plate group connecting portion 22 is respectively equipped with connecting end portion 32.
Plate package comprise multiple stacked heat exchanger plates to and be multiplely positioned at medium runner between plate pair;
Heat exchanger plates between be communicated with, and to be communicated with described dielectric space 21, to form medium runner 11 between plate pair, the gap between plate pair to comprise between described plate medium runner 11 between medium runner 10 and plate pair.
This heat exchanger plates 1 is for welded plate type heat exchanger, be applicable to work pressure scope vacuum ~ 4.2MPa, serviceability temperature is in the condition range of-70 ~ 350 DEG C, when practical application, multiple heat exchanger plates is carried out stacked, by the different type of attachment between each syndeton, medium runner 10 between plate is formed between plate pair, plate between form medium runner 11 between plate pair, between plate, between medium runner 10 and plate pair, medium runner 11 is disposed adjacent, all can be cold fluid pass or zone of heat liberation, cold to realize, thermal medium carries out exchange heat by wall, lateral connection portion 2 becomes as cold, the boundary of heat two runners, carry cold, due to the stress of pressure difference generation between heat two fluids, version due to lateral connection portion 2 changes the right angle type of attachment of heat exchanger plates corner, when heat exchanger plates thickness is certain, by increasing another two-dimension sizes, improve heat exchanger plates cold, the intensity of hot flow path boundary, simultaneously in heat exchanger plates 1 main heat exchange district 6 first convex lean 61 and guiding region, corner 7 in the second convex existence of lean 71, enhance the turbulent extent of fluid in runner, enhance heat transfer efficiency, butt-welded connected mode, prevent the generation of crevice corrosion, the permission that improve medium uses pressure and serviceability temperature, expand the scope of application of welded plate type heat exchanger,
Stacked lateral connection portion 2 forms dielectric space, to fluid, there is certain guide functions, the marginal position place of heat exchanger plates 1 is made also to have fluid to flow into, avoid the existence in flow dead, heat exchanger plates 1 marginal position place, fluid is more evenly distributed at sheet surface, and the heat exchange area of heat exchanger plates 1 can be fully utilized;
In plate package, the board component connecting portion that stacked lateral connection portion 2 is formed, connect with the coupled component sleeve of the version of joint face 31, improve contact area when heat exchanger plates is welded to connect, and connected by the weld seam between the coupled parts of connecting end portion at board component connecting portion two ends, the existence of these two weld seams, improve the bearing capacity of heat exchanger plates entirety, add the bearing capacity of heat exchanger plates, and then expand the scope of application of welded plate type heat exchanger.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the scope of the invention change and improve, and all should still belong within this patent covering scope.
Claims (14)
1., for a heat exchanger plates for welded type plate type heat exchanger, described heat exchanger plates (1) comprises main heat exchange district (6), it is characterized in that,
Heat exchanger plates edge is provided with syndeton, and syndeton comprises lateral connection portion (2), first and connects flanging (3), the first flanging (33), the second flanging (34);
The edge of heat exchanger plates (1) forms lateral connection portion (2) along its diagonal horizontal-extending;
The open end in lateral connection portion (2) is bent to form the first connection flanging (3);
The dual-side in lateral connection portion (2) bends corresponding formation first flanging (33), the second flanging (34) respectively;
The dual-side of the heat exchanger plates that this edge is adjacent is bent to form the second connection flanging (4), the 3rd respectively and connects flanging (5);
Second connects flanging (4) is connected with the first flanging (33) transition, and the 3rd connects flanging (5) is connected with the second flanging (34) transition.
2. a kind of heat exchanger plates for welded type plate type heat exchanger according to claim 1, is characterized in that, the corner of syndeton and heat exchanger plates is formed in one structure, and lateral connection portion utilizes the unfilled corner part of this corner to stretch out.
3. a kind of heat exchanger plates for welded type plate type heat exchanger according to claim 1, it is characterized in that, described lateral connection portion is the quadrangle protuberance of the diagonal symmetry along this heat exchanger plates corner, and the straight flange of open end is vertical with the diagonal at this place, corner of heat exchanger plates.
4., according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that, four corners of described heat exchanger plates are equipped with described syndeton.
5. according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that, first flanging (33) is reverse each other with the overbending direction of the second flanging (34), correspondingly, second connects flanging (4) be connected the overbending direction of flanging (5) with the 3rd reverse each other.
6., according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that,
With heat exchanger plates place plane for horizontal direction, its vertical direction is vertical direction,
First connects flanging (3), the first flanging (33), the second flanging (34), second connects flanging (4), the 3rd connection flanging (5) is vertical setting,
First flanging (33) is reverse each other with the overbending direction of the second flanging (34), and correspondingly, the second connection flanging (4) is connected flanging (5) overbending direction with the 3rd is reverse each other;
The overbending direction that first flanging (33) and second connects flanging (4) is identical, first flanging (33) end is connected flanging (4) end with described second is connected, first flanging (33) the other end is connected flanging (3) end points with first intersects at the edge of lateral connection portion (2), and second to connect flanging (4) equal with the height of the first flanging (33);
The overbending direction that second flanging (34) and the 3rd connects flanging (5) is identical, second flanging (34) end is connected flanging (5) end with the 3rd is connected, its the other end is connected flanging (3) end points with first intersects at the edge of lateral connection portion (2), and the height that the second flanging (34) and the 3rd connects flanging (5) is identical;
First height and second connecting flanging (3) connects flanging (4) and the 3rd, and to connect the height sum of flanging (5) equal.
7., according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that, the transverse width of described lateral connection portion (2) is 3 ~ 50mm.
8. according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that, the described first height connecting flanging (3) is 2 ~ 30mm.
9. according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that, described first flanging (33) is connected flanging (4) and is connected by transition part (15) with described second, described second flanging (34) is connected flanging (5) with the described 3rd and is connected by transition part (15); Transition part (15) is arc-shaped or hypotenuse shape.
10. according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that, heat transfer zone is provided with first convex lean (61), second convex lean (71), the shape of first convex lean (61) and second convex lean (71) is have lean and ripple struction that is paddy, and the cross section of this ripple struction is trapezoidal or triangle or circular arc; Heat transfer zone structure adopts any one or any combination in following four kinds of schemes or all:
Scheme 1: between the bearing of trend of described second convex lean (71) and the bearing of trend of described first convex lean (61), angle is 30 ~ 150 °;
Scheme 2: the surface area of described second convex lean (71) accounts for 2 ~ 50% of total heat exchange area of described heat exchanger plates (1).
Scheme 3: to be interrupted along bearing of trend at described first convex ridge (61) and described second convex ridge (71) and to be provided with recess (16), this recess (16) to ranked first between convex lean (61) and interlaced arrangement between adjacent two second convex lean (71) adjacent two;
Scheme 4: the degree of depth of described recess (16) is 0 ~ 100% of described first convex lean (61) height;
Scheme 5: the edge level of described main heat exchange district (6) extends to form extension (9), described second connection flanging (4) is connected flanging (5) and is connected with described heat exchanger plates (1) respectively by described extension (9) with the 3rd, described extension (9) is communicated with described lateral connection portion (2).
11. according to the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of claims 1 to 3, it is characterized in that, be provided with reinforcement (8) in described lateral connection portion (2), described reinforcement (8) is highly equal to or less than the height of the first connection flanging (3).
12. 1 kinds of heat exchanger plates pair, is characterized in that,
Heat exchanger plates is to comprising the first heat exchanger plates (12) and the second heat exchanger plates (13), and the first heat exchanger plates (12) and the second heat exchanger plates (13) all adopt the arbitrary described a kind of heat exchanger plates for welded type plate type heat exchanger of the claims 1 to 11;
First heat exchanger plates and the second heat exchanger plates each other 180 ° overturn after weld, the first heat exchanger plates is in below, and up, the two is interlocked the second heat exchange version;
First top connecting flanging (3) of described first heat exchanger plates (12) is connected flanging (3) bottom with first of the second heat exchanger plates (13) is docked and is welded to connect;
First flanging (33) top of described first heat exchanger plates (12) is docked with the bottom of second flanging (34) of the second heat exchanger plates (13) and is welded to connect;
A dielectric space is formed between the lateral connection portion of the first heat exchanger plates (12) and the lateral connection portion of the second heat exchanger plates (13);
Second top connecting flanging (4) of described first heat exchanger plates (12) is connected with the 3rd of described second heat exchanger plates (13) to dock bottom flanging (5) and is welded to connect;
Space between described first heat exchanger plates (12) with described second heat exchanger plates (13) is communicated with described dielectric space, forms medium runner (10) between plate.
13. 1 kinds of plate package, is characterized in that,
Plate package comprise multiple stacked heat exchanger plates to multiple medium runner; Heat exchanger plates is to a kind of heat exchanger plates pair adopted described in the claims 11, plate package comprises multiple heat exchanger plates to stacked multiple dielectric spaces, first of multiple lateral connection portion (2) connects flanging (3) and is welded to connect successively, form plate group connecting portion, the transverse ends of plate group connecting portion is respectively equipped with connecting end portion (32) for fixing;
Adjacent two heat exchanger plates between form connected space, be communicated with described dielectric space, form medium runner (11) between plate pair;
Medium runner comprises medium runner (11) between medium runner between plate (10) and plate pair.
14. 1 kinds of welded type plate type heat exchangers, is characterized in that, it adopts the arbitrary described a kind of heat exchanger plates pair of the claims 1 to 13.
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| CN201610077335.2A CN105526814B (en) | 2016-02-03 | 2016-02-03 | Heat exchanger plates, heat exchanger plates for welded type plate type heat exchanger are to, plate group and welded type plate type heat exchanger |
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| CN105526814B (en) | 2017-07-28 |
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