CN215261332U - Welded plate type heat exchanger - Google Patents
Welded plate type heat exchanger Download PDFInfo
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- CN215261332U CN215261332U CN202120836593.0U CN202120836593U CN215261332U CN 215261332 U CN215261332 U CN 215261332U CN 202120836593 U CN202120836593 U CN 202120836593U CN 215261332 U CN215261332 U CN 215261332U
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Abstract
The utility model discloses a welded plate heat exchanger, which comprises a plate bundle core body, a shell wrapping the plate bundle core body, and a fluid inlet and outlet connecting pipe arranged on the shell, wherein the plate bundle core body is circular, the shell is a combined cylinder coaxial with the plate bundle core body, and the combined cylinder consists of a top plate, a bottom plate, a plurality of stand columns and a plurality of cover plates with the same radian; the upper ends and the lower ends of the plurality of upright posts are detachably connected with the top plate and the bottom plate respectively to form a combined cylindrical framework after being symmetrically arranged; the upper end and the lower end of the cover plates with the same radian are detachably connected with the top plate and the bottom plate, and the left side edge and the right side edge are detachably connected with the upright posts to form a pressure-bearing sealed cavity for wrapping the plate bundle core body. Compared with the prior art the utility model discloses a temperature resistant, resistance to pressure are better, easily realize to the washing of pencil core, overhaul and change, have used relatively less material to form the pressure-bearing shell of heat exchanger simultaneously, are a novel welding plate heat exchanger that has better application and popularization prospect.
Description
Technical Field
The utility model relates to a indirect heating equipment technical field especially relates to a welding type plate heat exchanger.
Background
The plate heat exchanger has high heat exchange efficiency, compact and light structure and small occupied area, the heat transfer coefficient of the plate heat exchanger is 3-5 times higher than that of the tubular heat exchanger under the condition of the same pressure loss, the occupied area is one third of that of the tubular heat exchanger, and the heat recovery rate can reach more than 90 percent, so that the plate heat exchanger is ideal equipment for heat exchange. The plate heat exchangers of different types are widely applied to oil refining, chemical engineering and water treatment, wherein the welded plate heat exchanger which is researched and developed for adapting to high temperature and high pressure and facilitating periodic cleaning and maintenance further widens the application field of the plate heat exchanger.
Some types of plate heat exchanger structures now incorporate a plate bundle core of stacked round heat transfer plates within a sealed shell, which can withstand high pressure loads because it is surrounded by a sealed round shell. However, in some applications, due to the fact that the viscosity of the heat exchange fluid on two sides is high and solid particles are precipitated in a flow field with temperature change, a layer of dirt is formed on the wall of the heat exchange plate in long-period operation, so that the thermal resistance and the flow resistance of equipment are increased, and the performance of the heat exchanger is greatly influenced. The plate heat exchangers disclosed in patent documents CN 104487796B and CN 107076520B have difficulty in achieving regular cleaning agent flushing of the two-sided fluid channels. The plate heat exchanger disclosed in patent document CN 104204706B forms a box-shaped enclosure by bolting a top cover, a bottom cover, and four flat cover plates, and internally encloses a bundle core formed by stacking heat transfer plates. During maintenance of the heat exchanger, the plate bundle core can be flushed with a cleaning agent by removing the two side flat cover plates by disassembly. However, the box-shaped enclosure has poor pressure bearing performance compared with a cylindrical enclosure, and four flat cover plates are relatively thick in application and account for more than 60% of the weight of the whole heat exchanger, so that the total weight and the overall cost of the heat exchanger are greatly increased, and the economical efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a welded plate heat exchanger, its temperature resistant, resistance to pressure are better, easily realize to the washing of pencil core, overhaul and change.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a welded plate heat exchanger comprises a plate bundle core body, a shell wrapping the plate bundle core body and a fluid inlet and outlet connecting pipe arranged on the shell, wherein the plate bundle core body is circular, the shell is a combined cylinder coaxial with the plate bundle core body, and the combined cylinder consists of a top plate, a bottom plate, a plurality of stand columns and a plurality of cover plates with the same radian; the upper ends and the lower ends of the plurality of upright posts are detachably connected with the top plate and the bottom plate respectively to form a combined cylindrical framework after being symmetrically arranged; the upper end and the lower end of the cover plates with the same radian are detachably connected with the top plate and the bottom plate, and the left side edge and the right side edge are detachably connected with the upright posts to form a pressure-bearing sealed cavity for wrapping the plate bundle core body.
The outer edge of the top plate is provided with a plurality of symmetrical grooves, and the cross sections of the grooves are trapezoidal; the upper end and the lower end of the upright post are fittingly arranged in the groove and fixed.
The top plate, the bottom plate, the plurality of stand columns and the inner sides of the plurality of cover plates with the same radian are respectively provided with a top plate lining, a bottom plate lining, a cover plate lining and a stand column lining.
The top plate lining, the bottom plate lining, the cover plate lining and the upright post lining are all made of materials with the same level of corrosion resistance as the heat exchange plate.
And one side of the inlet and the outlet of the fluid on the plate bundle core body is provided with a sealing plate, and the other end of the sealing plate is fixedly connected with the inner lining of the upright post.
The sealing plate is a flexible structure with corrugations.
The plate bundle core body is formed by buckling a plurality of groups of paired heat exchange plates pairwise into a group to form a circulation channel of a first fluid, the outer edges of the heat exchange plates are connected together by using partition bars between each group, so that a circulation channel of a second fluid is formed between the plate groups, and the plate bundle core body is formed by stacking the plurality of groups of plate groups.
The end face of the outer edge of the heat exchange plate is provided with symmetrical bulges, and the end face of each bulge is transited to the end face of the heat exchange plate through an inclined plane.
The plate bundle core body is provided with baffle plates at intervals of a plurality of heat exchange plate groups in the height direction, one end of each baffle plate is inserted into the inlet end and the outlet end of the fluid and is fixedly connected with the heat exchange plate, and the other end of each baffle plate is attached to the inner lining of the cover plate.
The corrugations in the middle of the heat exchange plate are of an inclined straight corrugation structure or a bubbling corrugation structure with alternately raised and recessed grooves.
The heat exchanger of the utility model can remove the arc-shaped cover plates on four sides by disassembly, thereby realizing the cleaning, the maintenance and the replacement of the plate bundle core body; the round heat exchange plate has no sharp corner, and has uniform stress distribution, pressure resistance and better thermal shock resistance than a rectangular heat exchange plate; the cylindrical sealing shell has better bearing performance, and has lighter weight than a box-shaped sealing shell, thereby saving materials and having remarkable economic benefit; based on the characteristics, the utility model can further widen the application field of the plate heat exchanger, and has better application and popularization prospects.
Drawings
FIG. 1 is a three-dimensional structure of the present invention;
FIG. 2 is an exploded view of the present invention;
fig. 3 is a cross-sectional top view of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a partial structure view of the core body of the plate bundle of the present invention;
fig. 6 is a schematic structural view of the top plate of the present invention;
fig. 7 is a schematic structural view of the roof lining of the present invention;
fig. 8 is a schematic structural view of the stand column of the present invention;
fig. 9 is a schematic structural view of the column lining of the present invention;
numbering in the figures: 1. the heat exchanger comprises a top plate, a bottom plate, a plate bundle core, a cover plate, a column, a baffle plate, a sealing plate, a fastener, a top plate lining, a bottom plate lining, a heat exchange plate, a partition bar, a first fluid inlet and outlet port, a second fluid inlet and outlet port, a cover plate lining, a column lining, a first fluid flow path, a cover plate lining, a column lining, a first fluid flow path, a F2. second fluid flow path, a slope, a protrusion end face and a protrusion end face, wherein the protrusion end face is arranged on the top plate, the bottom plate lining, the heat exchange plate, the protrusion end face, and the protrusion end face are arranged on the bottom plate.
Detailed Description
The present invention and the effects thereof will be further explained with reference to the accompanying drawings.
Referring to fig. 1, 2 and 3, a welded plate heat exchanger includes a plate bundle core 3, a shell wrapping the plate bundle core 3, and a fluid inlet and outlet connection pipe arranged on the shell, wherein the plate bundle core 3 is circular, the shell is a combined cylinder coaxial with the plate bundle core 3, and the combined cylinder is composed of a top plate 1, a bottom plate 2, a plurality of columns 5 and a plurality of groups of cover plates 4 with the same radian; after the upright posts 5 are symmetrically arranged, the upper ends and the lower ends of the upright posts are detachably connected with the top plate 1 and the bottom plate 2 respectively to form a combined cylindrical framework; the upper end and the lower end of a plurality of groups of cover plates 4 with the same radian are detachably connected with the top plate 1 and the bottom plate 2 respectively, and the left side edge and the right side edge are detachably connected with the upright posts 5 to form a pressure-bearing sealed cavity for wrapping the plate bundle core body 3. The heat exchanger realizes the cleaning of the two-side flow channels and the plate bundle core body overhauling and maintenance by removing the cover plates 4 on the four sides through disassembling fasteners.
As shown in fig. 6, a plurality of symmetrical grooves are arranged on the outer edge of the top plate 1, and the cross section of each groove is trapezoidal; as shown in fig. 8, the cross-section of the pillar 5 is approximately concave, and the upper and lower ends are fittingly fitted into the grooves and fixed, which facilitates sealing between the pillar 5 and the cover plate 4. In this embodiment, four sets of grooves are provided on the top plate 1, four sets of corresponding pillars are provided, and four sets of cover plates 4 are provided. The upper end and the lower end of each of the four upright posts are respectively provided with two through holes, and the fasteners 8 respectively penetrate through the through holes at the upper end and the lower end of the upright posts and are connected with the internal tapping blind holes arranged on the top plate and the bottom plate to form a heat exchanger frame; the middle of the upright post 5, the radial surrounding of the top plate 1 and the bottom plate 2 are provided with internal tapping blind holes with certain depth, the four cover plates 4 surround by taking the circle center of the heat exchange plate as the center, and the cover plates and the heat exchanger frame are connected by a fastener 8 to form a cylindrical pressure-bearing sealing shell. The heat exchanger frame and the cover plate can be disassembled through the fasteners.
As shown in fig. 1 and 2, the connection pipes for the first fluid inlet and the first fluid outlet and for the second fluid inlet and the second fluid outlet are respectively arranged on a set of opposite cover plates 4, and the axes of the connection pipes are along the direction of the plane of the heat exchange plates 30, i.e. two media for heat exchange flow into the plate bundle core and flow out from the direction parallel to the heat exchange plates. It can be seen that the flow path F1 for the first fluid is approximately perpendicular to the flow path F2 for the second fluid, and that the two fluids are cross-flow heat exchanged between the respective flow channels.
As shown in fig. 6, 7, 8 and 9, the top plate 1, the bottom plate 2, the plurality of columns 5 and the plurality of groups of cover plates 4 with the same radian are respectively provided with a top plate lining 10, a bottom plate lining 20, a cover plate lining 40 and a column lining 50 on the inner sides. The top plate lining 10, the bottom plate lining 20, the cover plate lining 40 and the column lining 50 have the same shape as the top plate 1, the bottom plate 2, the column 5 and the cover plate 4 and are made of the same grade of corrosion-resistant material as the heat exchange plate 30. And the top plate, the bottom plate, the upright post and the cover plate are made of more economical carbon steel, so that the overall corrosion resistance of the equipment is improved, and the material cost is reduced.
As shown in fig. 3 and 4, a seal plate 7 is provided on the inlet and outlet sides of the fluid in the plate bundle core 3, and the other end of the seal plate 7 is welded to the column liner 50 to divide the outer periphery of the plate bundle core 3 into four regions and isolate the first fluid from the second fluid. The fluid flows from the first and second fluid inlet ports into the first and second fluid inlet ports of the plate bundle core 3, leaving a space for the fluid to have a certain distribution chamber.
The sealing plate 7 is a flexible structure with corrugation, and can offset thermal stress caused by inconsistent temperature changes of the plate bundle core body and the outer shell body.
As shown in fig. 5, the plate bundle core 3 is formed by buckling a plurality of pairs of heat exchange plates 30 into a group, wherein the heat exchange plates form a first fluid flow channel, and the outer edges of the heat exchange plates are connected together by using partition bars 31, so that a second fluid flow channel is formed between the plate groups, and the plate bundle cores 3 are formed by stacking the plate groups. The plate pair channel for the first fluid to flow through is closed relative to the flow channel for the second fluid; the corresponding plate-to-plate channel for the second fluid is closed with respect to the first fluid.
The heat exchange plate 30 is circular, and the end surface 302 of the protrusion is transited to the end surface 303 of the heat exchange plate through the inclined surfaces 301 at both ends. Which is equivalent to the end surface of the heat exchange plate provided with the bulges and the grooves which are symmetrically arranged. When the heat exchange plates 30 are buckled, the protrusions of the upper heat exchange plate are inserted into the end surface 303 of the lower heat exchange plate along the inclined plane 301 until the end surface 302 of the protrusions of the upper heat exchange plate contacts with the end surface 303 of the lower heat exchange plate.
Baffle plates 6 are arranged on the heat exchange plate groups at intervals in the height direction of the plate bundle core body 3, one end of each baffle plate 6 is inserted into the inlet end and the outlet end of a fluid and is welded with the heat exchange plate 30, the other end of each baffle plate 6 is attached to the cover plate lining 40, the normally flowing fluid is divided, and the media on the two sides of the heat exchanger can be matched with various flows due to the arrangement of the baffle plates on the two sides, so that the applicability of the heat exchanger to different working conditions is greatly improved.
The corrugations in the middle of the heat exchange plate 30 are in an inclined straight corrugation structure or a bubbling corrugation structure with alternating protrusions and grooves. Compared with the herringbone corrugation, the inclined straight corrugation and the bulge and the groove of the bubble structure extend according to a specific direction, when fluid flows in the plate group, the bottom of the groove of the lower plate of the plate group and the channel of the bulge top of the upper plate of the plate group are not interfered, and the characteristic can be well utilized when the heat exchanger needs to be opened for cleaning.
The above-mentioned only be the utility model discloses a preferred embodiment and technical principle, nevertheless the utility model discloses be not limited to this, to the technical staff in this field the utility model discloses various changes, adjustment and substitution that go on under the inspiration, the ordinary reference the utility model discloses any modification, the equivalent replacement of making of thinking all are contained within the scope of protection of the utility model.
Claims (10)
1. A welded plate heat exchanger comprises a plate bundle core body (3), a shell wrapping the plate bundle core body (3), and a fluid inlet and outlet connecting pipe arranged on the shell, and is characterized in that the plate bundle core body (3) is circular, the shell is a combined cylinder coaxial with the plate bundle core body (3), and the combined cylinder consists of a top plate (1), a bottom plate (2), a plurality of stand columns (5) and a plurality of cover plates (4) with the same radian; after the upright posts (5) are symmetrically arranged, the upper ends and the lower ends of the upright posts are detachably connected with the top plate (1) and the bottom plate (2) respectively to form a combined cylindrical framework; the upper end and the lower end of the cover plates (4) with the same radian are detachably connected with the top plate (1) and the bottom plate (2), and the left side edge and the right side edge are detachably connected with the upright posts (5) to form a pressure-bearing sealed cavity for wrapping the plate bundle core body (3).
2. A welded plate heat exchanger according to claim 1, wherein the top plate (1) is provided at its outer edge with a number of symmetrical grooves having a trapezoidal cross-section; the upper end and the lower end of the upright post (5) are fittingly arranged in the groove and fixed.
3. A welded plate heat exchanger according to claim 1, wherein the top plate (1), the bottom plate (2), the plurality of columns (5) and the plurality of cover plates (4) of the same curvature are provided with a top plate lining (10), a bottom plate lining (20), a cover plate lining (40) and a column lining (50) on the inner side, respectively.
4. A welded plate heat exchanger according to claim 3, wherein the top plate inner liner (10), the bottom plate inner liner (20), the cover plate inner liner (40) and the column inner liner (50) are made of a material having a corrosion resistance comparable to that of the heat exchanger plates (30).
5. A welded plate heat exchanger according to claim 1, wherein the plate bundle core (3) is provided with a sealing plate (7) on the side of the inlet and outlet of the fluid, and the other end of the sealing plate (7) is fixedly connected to the column liner (50).
6. A welded plate heat exchanger according to claim 5, wherein the sealing plate (7) is of a corrugated flexible construction.
7. A welded plate heat exchanger according to claim 1, wherein the plate package core (3) is formed by a plurality of pairs of heat exchanger plates (30) which are arranged in pairs to form a flow channel for the first fluid, each pair being provided with spacers (31) connecting their outer edges together, whereby a flow channel for the second fluid is formed between the plate packages, and wherein the plate packages are stacked to form the plate package core (3).
8. A welded plate heat exchanger according to claim 7, wherein the heat exchanger plates (30) have symmetrical bulges on their peripheral end surfaces, the bulges having end surfaces (302) that transition by means of bevels (301) to heat exchanger plate end surfaces (303).
9. The welded plate heat exchanger according to claim 7, characterized in that baffles (6) are arranged in the plate package core (3) at a plurality of heat exchanger groups spaced apart in the height direction, one end of each baffle (6) being inserted into the inlet and outlet ends of the fluid and being fixedly connected to the heat exchanger plates (30) and the other end being attached to the cover plate liner (40).
10. A welded plate heat exchanger according to claim 7, wherein the corrugations in the middle of the heat exchanger plates (30) are of an inclined straight corrugation configuration or a bubbling corrugation configuration of alternating protrusions and recesses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120836593.0U CN215261332U (en) | 2021-04-22 | 2021-04-22 | Welded plate type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120836593.0U CN215261332U (en) | 2021-04-22 | 2021-04-22 | Welded plate type heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN215261332U true CN215261332U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120836593.0U Active CN215261332U (en) | 2021-04-22 | 2021-04-22 | Welded plate type heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137880A (en) * | 2021-04-22 | 2021-07-20 | 上海蓝滨石化设备有限责任公司 | Welded plate type heat exchanger |
| CN116659270A (en) * | 2023-05-30 | 2023-08-29 | 江苏广旭热管科技有限公司 | Heat pipe type waste heat recoverer with high heat transfer efficiency and use method thereof |
-
2021
- 2021-04-22 CN CN202120836593.0U patent/CN215261332U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137880A (en) * | 2021-04-22 | 2021-07-20 | 上海蓝滨石化设备有限责任公司 | Welded plate type heat exchanger |
| CN116659270A (en) * | 2023-05-30 | 2023-08-29 | 江苏广旭热管科技有限公司 | Heat pipe type waste heat recoverer with high heat transfer efficiency and use method thereof |
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