CN106115823B - Welded plate type water making device and manufacturing method thereof - Google Patents
Welded plate type water making device and manufacturing method thereof Download PDFInfo
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- CN106115823B CN106115823B CN201610682106.3A CN201610682106A CN106115823B CN 106115823 B CN106115823 B CN 106115823B CN 201610682106 A CN201610682106 A CN 201610682106A CN 106115823 B CN106115823 B CN 106115823B
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- pipe box
- heat exchange
- evaporator
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
Abstract
A welded plate type water making device and a manufacturing method thereof are provided with a bracket, an evaporator and a condenser are welded on the bracket, the evaporator and the condenser both adopt plate type heat exchange structures, an evaporator plate bundle and a condenser plate bundle respectively adopt welded connection structures, the evaporator shell and the evaporator plate bundle as well as the condenser shell and the condenser plate bundle are also completely welded, and the evaporator and the condenser are welded and connected through a shared clapboard.
Description
Technical Field
The invention relates to a water making device for desalting seawater, in particular to a welded plate type water making device and a manufacturing method thereof.
Background
The existing seawater desalination technology generally adopts a reverse osmosis method and a distillation method. The distillation method has the advantages that the seawater is subjected to phase change, the generated steam passes through the vapor-liquid separator and is then condensed to form fresh water, the product water is high in quality, the salt content is less than 5ppm, the product water can be used as boiler make-up water, and the cost of the unit fresh water yield of the distillation method is lower than that of a reverse osmosis method, so that the distillation method is more widely applied than the reverse osmosis method.
In the existing water making devices for seawater desalination by distillation, the water making devices are divided into a tube-shell heat exchange type water making device and a detachable water making device (hereinafter referred to as a detachable plate type water making device) according to different adopted heat exchange components. The heat transfer coefficient of the tube-shell heat exchange type water making device is low, so that the volume and the weight of the water making device are large, the water making device is heavy, inconvenient to transport and install, high in water making cost and maintenance cost and short in continuous operation period. The detachable plate heat exchange type water making device has the advantages that the special plate structure enhances the disturbance effect on fluid, improves the heat transfer coefficient, reduces the heat exchange area, and is high in compactness, small in size and light in weight, so that the detachable plate heat exchange type water making device is widely applied.
However, the flow channel between the plates is narrow, so that the flow channel is easy to block after the plates are scaled, and the plates need to be disassembled and cleaned regularly; meanwhile, the plates are sealed by gaskets, and the gaskets are corroded and aged under the action of seawater, so that the gaskets need to be replaced regularly, the maintenance cost of the seawater desalination device is increased, and the continuous operation time is shortened; in addition, due to the limitation of the structure of the detachable plate type water making device, the temperature and the pressure of a heat source of the detachable plate type water making device cannot be too high, and the detachable plate type water making device is poor in applicability to heat medium parameters.
Disclosure of Invention
In order to solve the technical problems, the invention provides a welded plate type water making device and a manufacturing method thereof.
The technical scheme adopted by the invention to solve the technical problems is as follows: a welded plate type water making device is provided with a support, an evaporator and a condenser are welded on the support, the evaporator comprises an evaporator shell and an evaporator plate bundle arranged in the evaporator shell, and a heat medium inlet pipe box, a heat medium outlet pipe box, a preheating seawater inlet pipe box and a concentrated seawater outlet pipe box are arranged on the evaporator shell; the evaporator plate bundle comprises a plurality of rectangular heat exchange plates and four toothed plates, wherein the rectangular heat exchange plates are arranged in parallel from top to bottom, one side of each heat exchange plate is provided with a plurality of grooves, the other side of each heat exchange plate is correspondingly provided with a plurality of raised structures, welding connection areas are arranged on four sides of each heat exchange plate, the welding connection areas on one group of opposite sides are flush with the bottoms of the grooves on one side, and the welding connection areas on the other group of opposite sides are flush with the tops of the grooves on the same side; every two of the heat exchange plates are in a group, a group of opposite sides which are parallel and level to the tops of the grooves in the same group are correspondingly welded together, the other group of opposite sides are respectively welded together with the corresponding sides of the adjacent group of heat exchange plates, a first flow channel is formed between the two heat exchange plates in the same group, a second flow channel is formed between the two adjacent groups of heat exchange plates, two ends of the first flow channel are respectively communicated with a heat medium inlet pipe box and a heat medium outlet pipe box, two ends of the second flow channel are respectively communicated with a preheated seawater inlet pipe box and a concentrated seawater outlet pipe box, toothed sides of four toothed plates are respectively welded at four corners of all the heat exchange plates and used for separating the first flow channel from the second flow channel, and the other three sides of the toothed plates are all welded together with the evaporator shell;
the condenser comprises a condenser shell and a condenser plate bundle arranged in the condenser shell, and a bottom plate of the condenser shell and a top plate of the evaporator shell share the same plate, namely a partition plate; the condenser shell is provided with a fresh seawater inlet pipe box, a fresh seawater outlet pipe box, a steam pipe box and a product fresh water pipe box; the structure of the condenser plate bundle is the same as that of the evaporator plate bundle, two ends of a first flow passage of the condenser plate bundle are respectively communicated with a fresh seawater inlet pipe box and a fresh seawater outlet pipe box, and two ends of a second flow passage are respectively communicated with a steam pipe box and a product fresh water pipe box;
the heat medium inlet pipe box is provided with a heat medium inlet, the heat medium outlet pipe box is provided with a heat medium outlet, the lower part of the concentrated seawater outlet pipe box is provided with a concentrated seawater outlet, the concentrated seawater outlet pipe box is communicated with the steam pipe box, and the steam demister is arranged on the partition plate at the position where the concentrated seawater outlet pipe box is communicated with the steam pipe box; the product fresh water pipe box is provided with a product fresh water outlet; the fresh seawater inlet pipe box is provided with a fresh seawater inlet, and a preheated seawater transmission pipeline is arranged between the fresh seawater outlet pipe box and the preheated seawater inlet pipe box.
And a hand hole for observing and maintaining the steam demister is arranged on a steam pipe box of the condenser shell.
The support comprises a rectangular frame, four support legs are arranged at the upper end of the frame, and the evaporator shell is welded at the upper parts of the four support legs.
A manufacturing method of a welded plate type water making device comprises the following steps:
A. fabrication of condenser and evaporator plate bundles:
the condenser plate bundle and the evaporator plate bundle have the same structure and are respectively a heat exchange part, and the manufacturing method of the heat exchange part comprises the following steps:
1) and press forming of the heat exchange plate:
pressing a plurality of prepared rectangular flat plate materials into a structure with a plurality of grooves on one side and a plurality of bulges on the other side correspondingly, wherein welding connection areas are reserved on four sides of the heat exchange plate after the plate materials are pressed and formed, wherein the welding connection areas on one group of opposite sides are flush with the bottoms of the grooves on one side, and the welding connection areas on the other group of opposite sides are flush with the tops of the grooves on the same side;
2) and grouping welding of the heat exchange plates:
placing two heat exchange plates in a group in a face-to-face manner, enabling the welding connection areas of a group of opposite sides, which are parallel to the top of the groove, in the two heat exchange plates in each group to be correspondingly attached, then welding, and welding the corresponding welding connection areas together along the edges to obtain a plurality of heat exchange plate groups, wherein a first flow channel is formed between the two heat exchange plates in each group;
3) welding and forming the heat exchange plate bundle:
stacking the plurality of heat exchange plate groups welded in the step 2), enabling the welded pair of opposite sides to be arranged in the same direction, and then welding the other pair of adjacent two heat exchange plates in the adjacent heat exchange plate groups together at the edge of a welding connection area, so that a second flow channel is formed between the two adjacent heat exchange plates in the adjacent heat exchange plate groups, and the plurality of heat exchange plate groups are welded in sequence to form a heat exchange plate bundle;
4) and welding and forming the heat exchange part:
respectively welding toothed plates for separating the first flow channel from the second flow channel at four corners of the heat exchange plate bundle obtained in the step 3), so that the plate surface of each toothed plate is perpendicular to the flow direction of the medium of the first flow channel, inserting the teeth of each toothed plate into a gap formed between every two adjacent heat exchange plate groups at the corners, and then welding the toothed plates and the heat exchange plate bundle together to form a heat exchange component;
B. welding and forming of the evaporator:
flatly placing an evaporator plate bundle on a bottom plate of a prepared evaporator shell, enabling four toothed plates to vertically stand on the bottom plate of the evaporator shell, flatly placing a partition plate at the upper end of the evaporator plate bundle, wherein the partition plate is the same as the bottom plate of the evaporator shell in shape and size, the bottom plate of the evaporator shell is provided with lower structures used for forming a heat medium inlet pipe box, a heat medium outlet pipe box, a preheated seawater inlet pipe box and a concentrated seawater outlet pipe box, the partition plate is correspondingly provided with upper structures used for forming the heat medium inlet pipe box, the heat medium outlet pipe box, the preheated seawater inlet pipe box and the concentrated seawater outlet pipe box, a communication hole used for communicating the concentrated seawater outlet pipe box and a steam pipe box is formed in the partition plate, then welding the bottom edges of the four toothed plates and the bottom plate of the evaporator shell together, welding the top edges of the four toothed plates and the partition plate together, and finally welding side plates of the evaporator shell between the partition plate and the bottom plate of the evaporator shell, the side edges of the four toothed plates are welded with corresponding side plates of the evaporator shell respectively to form an evaporator;
C. welding and forming of the condenser:
b, flatly placing the condenser plate bundle on a partition plate in the same way as the evaporator plate bundle in the step B, flatly placing a top plate of a condenser shell at the upper end of the condenser plate bundle, wherein the top plate of the condenser shell is provided with upper structures for forming a fresh seawater inlet pipe box, a fresh seawater outlet pipe box, a steam pipe box and a product fresh water pipe box, and then welding the condenser plate bundle and the evaporator shell in the same way as the evaporator plate bundle in the step B to form the condenser, wherein a steam demister is arranged at a connecting hole on the partition plate before or after the steam pipe box is formed;
D. welding two ends of a preheated seawater transmission pipeline with a fresh seawater outlet pipe box of a condenser and a preheated seawater inlet pipe box of an evaporator respectively;
E. welding a bracket;
F. and welding the evaporator shell on the bracket.
Has the beneficial effects that:
according to the invention, the evaporator and the condenser both adopt plate type heat exchange structures, the evaporator plate bundle and the condenser plate bundle respectively adopt welded connection structures, the evaporator shell and the evaporator plate bundle as well as the condenser shell and the condenser plate bundle are also completely welded, and the evaporator and the condenser are welded through a shared clapboard.
Under the condition of the same heat transfer coefficient, the invention can reduce the heat exchange area of the evaporator and the condenser, thereby reducing the volume and being convenient for transportation and installation.
In addition, the steam demister is arranged between the evaporator concentrated seawater outlet pipe box and the condenser steam pipe box, so that the whole water making device is more compact in structure and convenient to install and transport.
In the invention, the condenser plate bundle and the evaporator plate bundle are free from using sealing gaskets, so that the applicability of the invention to heat medium parameters can be improved, the maintenance period is prolonged, and when maintenance is needed, the medicine adding, soaking and flushing can be integrally carried out, thus being convenient and quick.
Further, a manhole is provided, which facilitates observation and maintenance of the steam demister and related internal structures.
The present invention will be described in further detail with reference to the drawings and the following detailed description.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the evaporator shell side plate and the condenser shell side plate of fig. 1 with a portion removed.
FIG. 3 is a schematic view of a welded structure of the evaporator (with a portion of the side plate removed).
Fig. 4 is a schematic view of an evaporator pan beam weld configuration.
Fig. 5 is a partially exploded view of fig. 4.
In the drawing, 1, a bracket, 101, a frame, 102, a leg, 2, an evaporator housing, 201, a bottom plate of the evaporator housing, 202, a side plate of the evaporator housing, 203, a heat medium inlet pipe box, 204, a heat medium outlet pipe box, 205, a preheated seawater inlet pipe box, 206, a concentrated seawater outlet pipe box, 3, a condenser housing, 301, a top plate of the condenser housing, 302, a side plate of the condenser housing, 303, a fresh seawater inlet pipe box, 304, a fresh seawater outlet pipe box, 305, a steam pipe box, 306, a product fresh water pipe box, 4, a heat medium outlet, 5, a product fresh water outlet, 6, a preheated seawater transfer pipe, 7, a hand hole, 8, a fresh seawater inlet, 9, a heat medium inlet, 10, a steam demister, 11, a concentrated seawater outlet, 12, a plate bundle, 12a, a heat exchange plate, 12b, a toothed plate, 13, a partition plate, 13a communication hole, 14, a condenser plate bundle, 15. a heating medium channel 16 and a preheating seawater channel.
Detailed Description
As shown in the figure, the welded plate type water making device is provided with a bracket 1, and an evaporator and a condenser are welded on the bracket 1, wherein the evaporator comprises an evaporator shell 2 and an evaporator plate bundle 12 arranged in the evaporator shell 2.
The evaporator shell 2 is provided with a heat medium inlet pipe box 203, a heat medium outlet pipe box 204, a preheated seawater inlet pipe box 205 and a concentrated seawater outlet pipe box 206.
The evaporator plate bundle 12 comprises a plurality of rectangular heat exchange plates 12a and four toothed plates 12b which are arranged in parallel, wherein one side of each heat exchange plate 12a is provided with a plurality of grooves, and the other side of each heat exchange plate is correspondingly provided with a plurality of convex structures.
Welding connection areas are arranged on four sides of the heat exchange plate 12a, wherein the welding connection areas of one group of opposite sides are flush with the bottoms of the grooves on one side, and the welding connection areas of the other group of opposite sides are flush with the tops of the grooves on the same side; every two of the heat exchange plates 12a form a group, a group of opposite sides which are parallel and level to the tops of the grooves are correspondingly welded together in the same group, the other group of opposite sides are respectively welded together with the corresponding sides of the adjacent group of heat exchange plates 12a, a first flow channel is formed between the two heat exchange plates 12a in the same group, a second flow channel is formed between the two adjacent groups of heat exchange plates 12a, two ends of the first flow channel are respectively communicated with the heat medium inlet pipe box 203 and the heat medium outlet pipe box 204, and are heat medium channels 15, two ends of the second flow channel are respectively communicated with the preheating seawater inlet pipe box 205 and the concentrated seawater outlet pipe box 206, and toothed sides of the four toothed plates 12b are respectively welded at four corners of all the heat exchange plates 12a for preheating the seawater channel 16, and are used for separating the first flow channel from the second flow channel. During specific welding, the teeth of the toothed plate are correspondingly inserted between the two adjacent groups of heat exchange plates to be welded.
The other three sides of the toothed plate 12b are welded to the bottom plate 201 of the evaporator case, the side plate 202 of the evaporator case, and the top plate (i.e., a partition plate 13 described below) of the evaporator case 2, respectively.
The condenser comprises a condenser shell 3 and a condenser plate bundle 14 arranged in the condenser shell, wherein the bottom plate of the condenser shell 3 and the top plate of the evaporator shell 2 share the same plate, namely a partition plate 13; a fresh seawater inlet channel box 303, a fresh seawater outlet channel box 304, a steam channel box 305 and a product fresh water pipe box 306 are arranged on the condenser shell 3; the structure of the condenser plate bundle 14 is identical to the structure of the evaporator plate bundle 12 and will not be described in detail.
The two ends of the first flow channel of the condenser plate bundle 14 are respectively communicated with a fresh seawater inlet channel box 303 and a fresh seawater outlet channel box 304, which are fresh seawater channels, and the two ends of the second flow channel are respectively communicated with a steam channel box 305 and a product fresh water pipe box 306, which are steam condensation channels.
The heat medium inlet pipe box 203 is provided with a heat medium inlet 9, the heat medium outlet pipe box 204 is provided with a heat medium outlet 4, the lower part of the concentrated seawater outlet pipe box 206 is provided with a concentrated seawater outlet 11, the concentrated seawater outlet pipe box 206 is communicated with the steam pipe box 305, and the steam demister 10 is arranged on the partition plate 13 at the position where the concentrated seawater outlet pipe box 206 is communicated with the steam pipe box 305; the product fresh water pipe box 306 is provided with a product fresh water outlet 5; the fresh seawater inlet pipe box 303 is provided with a fresh seawater inlet 8, and a preheating seawater transmission pipeline 6 is arranged between the fresh seawater outlet pipe box 304 and the preheating seawater inlet pipe box 205.
In this embodiment, the arrangement of the grooves (the corresponding sides are the protrusions) in the heat exchange plate 12a is in the shape of a Chinese character 'ren'.
In practical application, the arrangement form of the grooves may be any structural form capable of forming a bidirectional channel, for example, the grooves may also be arranged in rows along a certain direction, each row includes a plurality of grooves, and two adjacent rows of grooves are staggered.
A hand hole 7 for observing and maintaining the steam demister 10 is provided on the steam pipe box 305 of the condenser case 3.
The bracket 1 comprises a rectangular frame 101, four legs 102 are arranged at the upper end of the frame 101, and the evaporator shell 2 is welded at the upper parts of the four legs.
The process of making water by adopting the welding type plate type water making device of the invention is as follows:
fresh seawater enters a fresh seawater channel of a condenser plate bundle 14 in a condenser shell 3 from a fresh seawater inlet 8 through a fresh seawater inlet pipe box 303, and is used as a cooling medium to cool steam in a steam condensation channel and absorb the temperature rise of heat released by steam condensation to become preheated seawater; the preheated seawater enters a preheated seawater channel of an evaporator plate bundle 12 in the evaporator shell 2 through a fresh seawater outlet pipe box 304, a preheated seawater transmission pipeline 6 and a preheated seawater inlet pipe box 205 to exchange heat with a heat medium in the heat medium channel, part of the preheated seawater in the preheated seawater channel of the evaporator plate bundle 12 is evaporated into steam after the temperature of the preheated seawater is raised to a saturation temperature, the steam enters a steam condensation channel of a condenser plate bundle 14 in the condenser shell 3 through a concentrated seawater outlet pipe box 206 of the evaporator shell 2, a steam demister 10 and a steam pipe box 305 of the condenser, and the steam is condensed into product fresh water after exchanging heat with the fresh seawater serving as a cooling medium and is discharged through a product fresh water outlet 5 arranged on a product fresh water pipe box 306; the unevaporated concentrated seawater collects from the bottom of the evaporator case 2 to the bottom of the concentrated seawater outlet header 206 by gravity and is discharged from the concentrated seawater outlet 11.
The steam demister 10 has the functions of removing seawater droplets carried in steam generated by evaporation of preheated seawater, reducing the salt content of product fresh water and improving the quality of the product fresh water.
The manufacturing method of the welded plate type water making device comprises the following steps:
A. fabrication of condenser and evaporator plate bundles:
the condenser plate bundle and the evaporator plate bundle have the same structure and are respectively a heat exchange part, and the manufacturing method of the heat exchange part comprises the following steps:
1) and press forming of the heat exchange plate:
pressing a plurality of prepared rectangular flat plate materials into a structure with a plurality of grooves on one side and a plurality of bulges on the other side correspondingly, wherein welding connection areas are reserved on the four sides of the heat exchange plate after the plate materials are pressed and formed, the welding connection areas of one group of opposite sides are flush with the bottoms of the grooves on one side, and the welding connection areas of the other group of opposite sides are flush with the tops of the grooves on the same side;
2) and grouping welding of the heat exchange plates:
placing two heat exchange plates in a group in a face-to-face manner, correspondingly attaching the welding connection areas of a group of opposite sides, which are parallel to the top of the groove, in the two heat exchange plates in each group, then welding, and welding the corresponding welding connection areas together along the edges to obtain a plurality of heat exchange plate groups, wherein a first flow channel is formed between the two heat exchange plates in each group;
3) welding and forming the heat exchange plate bundle:
stacking the plurality of heat exchange plate groups welded in the step 2), enabling the welded pair of opposite sides to be arranged in the same direction, and then welding the other pair of adjacent two heat exchange plates in the adjacent heat exchange plate groups together at the edge of a welding connection area, so that a second flow channel is formed between the adjacent two heat exchange plates in the adjacent heat exchange plate groups, and the plurality of heat exchange plate groups are sequentially welded to form a heat exchange plate bundle;
4) and welding and forming the heat exchange part:
respectively welding toothed plates for separating the first flow channel from the second flow channel at four corners of the heat exchange plate bundle obtained in the step 3), so that the plate surface of each toothed plate is perpendicular to the flow direction of the medium of the first flow channel, inserting the teeth of each toothed plate into a gap formed between every two adjacent heat exchange plate groups at the corners, and then welding the toothed plates and the heat exchange plate bundle together to form a heat exchange component;
B. welding and forming of the evaporator:
the evaporator plate bundle is horizontally placed on the bottom plate of the prepared evaporator shell, four toothed plates are vertically erected on the bottom plate of the evaporator shell, a partition 13 is horizontally placed at the upper end of the evaporator plate bundle, the partition has the same shape and size as the bottom plate 201 of the evaporator shell, the bottom plate 201 of the evaporator shell has lower structures for forming a heat medium inlet pipe box 203, a heat medium outlet pipe box 204, a preheating seawater inlet pipe box 205 and a concentrated seawater outlet pipe box 206, and the partition correspondingly has upper structures for forming the heat medium inlet pipe box 203, the heat medium outlet pipe box 204, the preheating seawater inlet pipe box 205 and the concentrated seawater outlet pipe box 206.
And the partition plate is provided with a communication hole 13a for communicating the concentrated seawater outlet pipe box 206 with the steam pipe box 305, then the bottom edges of the four toothed plates 12b are welded with the bottom plate 201 of the evaporator shell, the top edges of the four toothed plates are welded with the partition plate, and finally, each side plate of the evaporator shell is welded between the partition plate 13 and the bottom plate 201 of the evaporator shell to form the evaporator. Wherein, the sides of four blocks of pinion racks respectively with the corresponding curb plate welding of evaporimeter casing together.
In the above welding process, before welding, the bottom edge of the toothed plate 12b and the bottom plate 201 of the evaporator shell, the top edge of the toothed plate and the partition plate 13, the side plates and the bottom plate 201 of the evaporator shell, and the side plates and the partition plate 13 may be positioned by spot welding.
C. Welding and forming of the condenser:
placing the condenser plate bundle flat on the partition 13 in the same manner as the evaporator plate bundle in step B, placing the top plate 301 of the condenser housing flat on the upper end of the condenser plate bundle, the top plate of the condenser housing having respective upper structures for forming a fresh seawater inlet header box 303, a fresh seawater outlet header box 304, a steam header box 305 and a product fresh water header box 306, and then welding the condenser housing in the same manner as the welding of the evaporator plate bundle and the evaporator housing in step B to form the condenser, wherein the steam demister 10 is made in a block-wise assembly so as to be capable of being installed and removed through the hand holes 7, and therefore, the steam demister 10 can be provided at the communication holes of the partition before or after the steam header box 305 is formed;
D. welding two ends of a preheated seawater transmission pipeline 6 with a fresh seawater outlet pipe box 304 of a condenser and a preheated seawater inlet pipe box 205 of an evaporator respectively;
E. welding a bracket;
in this embodiment, a rectangular frame 101 is formed by welding a section bar, and then four legs 102 of the same height are welded to the upper end of the frame.
F. The evaporator shell is welded to the four legs 102 of the bracket, resulting in a welded plate weld.
Parts not described in detail herein are prior art.
Claims (4)
1. The utility model provides a welding formula is board-like makes water installation which characterized in that: the system is provided with a support (1), an evaporator and a condenser are welded on the support (1), the evaporator comprises an evaporator shell (2) and an evaporator plate bundle (12) arranged in the evaporator shell, and a heat medium inlet pipe box (203), a heat medium outlet pipe box (204), a preheating seawater inlet pipe box (205) and a concentrated seawater outlet pipe box (206) are arranged on the evaporator shell (2); the evaporator plate bundle (12) comprises a plurality of rectangular heat exchange plates (12 a) and four toothed plates (12 b) which are arranged in parallel up and down, wherein one side of each heat exchange plate (12 a) is provided with a plurality of grooves, the other side of each heat exchange plate (12 a) is correspondingly provided with a plurality of bulges, four sides of each heat exchange plate (12 a) are respectively provided with a welding connection area, the welding connection areas of one group of opposite sides are flush with the bottoms of the grooves on one side, and the welding connection areas of the other group of opposite sides are flush with the tops of the grooves on the same side; every two of the heat exchange plates (12 a) are in a group, a group of opposite sides which are parallel and level to the tops of the grooves in the same group are correspondingly welded together, the other group of opposite sides are respectively welded together with the corresponding sides of the adjacent group of heat exchange plates (12 a), a first flow channel is formed between the two heat exchange plates (12 a) in the same group, a second flow channel is formed between the two adjacent groups of heat exchange plates (12 a), two ends of the first flow channel are respectively communicated with a heat medium inlet pipe box (203) and a heat medium outlet pipe box (204), two ends of the second flow channel are respectively communicated with a preheated seawater inlet pipe box (205) and a concentrated seawater outlet pipe box (206), toothed sides of four toothed plates are respectively welded at four corners of all the heat exchange plates (12 a) and used for separating the first flow channel from the second flow channel, and the other three sides of the toothed plates are all welded together with the evaporator shell (2);
the condenser comprises a condenser shell (3) and a condenser plate bundle (14) arranged in the condenser shell, wherein the bottom plate of the condenser shell (3) and the top plate of the evaporator shell (2) share the same plate, and the plate is called as a partition plate (13); a fresh seawater inlet pipe box (303), a fresh seawater outlet pipe box (304), a steam pipe box (305) and a product fresh water pipe box (306) are arranged on the condenser shell (3); the structure of the condenser plate bundle (14) is the same as that of the evaporator plate bundle (12), two ends of one group of flow passages of the condenser plate bundle (14) are respectively communicated with a fresh seawater inlet pipe box (303) and a fresh seawater outlet pipe box (304), and two ends of the other group of flow passages are respectively communicated with a steam pipe box (305) and a product fresh water pipe box (306);
the heat medium inlet pipe box (203) is provided with a heat medium inlet (9), the heat medium outlet pipe box (204) is provided with a heat medium outlet (4), the lower part of the concentrated seawater outlet pipe box (206) is provided with a concentrated seawater outlet (11), the concentrated seawater outlet pipe box (206) is communicated with the steam pipe box (305), and the steam demister (10) is arranged at the position on the partition plate (13) where the concentrated seawater outlet pipe box (206) is communicated with the steam pipe box (305); the product fresh water pipe box (306) is provided with a product fresh water outlet (5); the fresh seawater inlet pipe box (303) is provided with a fresh seawater inlet (8), and a preheated seawater transmission pipeline (6) is arranged between the fresh seawater outlet pipe box (304) and the preheated seawater inlet pipe box (205).
2. The welded plate type water producing device according to claim 1, wherein: a hand hole (7) for observing and maintaining the steam demister (10) is arranged on a steam pipe box (305) of the condenser shell (3).
3. The welded plate type water producing device according to claim 1, wherein: the support (1) comprises a rectangular welding frame (101), four support legs (102) are arranged at the upper end of the welding frame (101), and the evaporator shell (2) is welded to the upper portions of the four support legs.
4. A manufacturing method of a welded plate type water making device is characterized by comprising the following steps:
A. fabrication of condenser and evaporator plate bundles:
the condenser plate bundle and the evaporator plate bundle have the same structure and are respectively a heat exchange part, and the manufacturing method of the heat exchange part comprises the following steps:
1) and pressing and forming the heat exchange plate:
pressing a plurality of prepared rectangular flat plate materials into a structure with a plurality of grooves on one side and a plurality of bulges on the other side correspondingly, wherein welding connection areas are reserved on the four sides of the heat exchange plate after the plate materials are pressed and formed, the welding connection areas of one group of opposite sides are flush with the bottoms of the grooves on one side, and the welding connection areas of the other group of opposite sides are flush with the tops of the grooves on the same side;
2) and grouping welding of the heat exchange plates:
placing two heat exchange plates in a group in a face-to-face manner, correspondingly attaching the welding connection areas of a group of opposite sides, which are parallel to the top of the groove, in the two heat exchange plates in each group, then welding, and welding the corresponding welding connection areas together along the edges to obtain a plurality of heat exchange plate groups, wherein a first flow channel is formed between the two heat exchange plates in each group;
3) welding and forming the heat exchange plate bundle:
stacking the plurality of heat exchange plate groups welded in the step 2), enabling the welded pair of opposite sides to be arranged in the same direction, and then welding the other pair of adjacent two heat exchange plates in the adjacent heat exchange plate groups together at the edge of a welding connection area, so that a second flow channel is formed between the two adjacent heat exchange plates in the adjacent heat exchange plate groups, and the plurality of heat exchange plate groups are welded in sequence to form a heat exchange plate bundle;
4) and welding and forming the heat exchange part:
respectively welding toothed plates for separating the first flow channel from the second flow channel at four corners of the heat exchange plate bundle obtained in the step 3), so that the plate surface of each toothed plate is perpendicular to the flow direction of the medium of the first flow channel, inserting the teeth of each toothed plate into a gap formed between every two adjacent heat exchange plate groups at the corners, and then welding the toothed plates and the heat exchange plate bundle together to form a heat exchange component;
B. welding and forming of the evaporator:
the evaporator plate bundle is horizontally placed on a bottom plate of a prepared evaporator shell, four toothed plates are vertically arranged on the bottom plate of the evaporator shell, a partition plate is horizontally placed at the upper end of the evaporator plate bundle, the partition plate is the same as the bottom plate of the evaporator shell in shape and size, the bottom plate (201) of the evaporator shell is provided with lower structures for forming a heat medium inlet pipe box (203), a heat medium outlet pipe box (204), a preheating seawater inlet pipe box (205) and a concentrated seawater outlet pipe box (206), the partition plate is correspondingly provided with upper structures for forming the heat medium inlet pipe box (203), the heat medium outlet pipe box (204), the preheating seawater inlet pipe box (205) and the concentrated seawater outlet pipe box (206), communication holes for communicating the concentrated seawater outlet pipe box (206) with a steam pipe box (305) are formed in the partition plate, and then the bottom edges of the four toothed plates are welded with the bottom plate of the evaporator shell, welding the top edges of the four toothed plates and the partition plates together, and finally welding each side plate of the evaporator shell between the partition plates and the bottom plate of the evaporator shell, wherein the side edges of the four toothed plates are respectively welded with the corresponding side plates of the evaporator shell together to form the evaporator;
C. welding and forming of the condenser:
placing the condenser plate bundle on a partition in the same manner as the evaporator plate bundle in the step B, placing a top plate of a condenser housing on the upper end of the condenser plate bundle, the top plate of the condenser housing having upper structures for forming a fresh seawater inlet channel (303), a fresh seawater outlet channel (304), a steam channel (305) and a product fresh water channel (306), and then welding in the same manner as the evaporator plate bundle and the evaporator housing in the step B to form the condenser, wherein a steam demister (10) is provided at a communication hole in the partition before or after the steam channel (305) is formed;
D. welding two ends of a preheated seawater transmission pipeline (6) with a fresh seawater outlet pipe box (304) of a condenser and a preheated seawater inlet pipe box (205) of an evaporator respectively;
E. welding a bracket;
F. and welding the evaporator shell on the bracket.
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| CN201610682106.3A CN106115823B (en) | 2016-08-18 | 2016-08-18 | Welded plate type water making device and manufacturing method thereof |
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| CN106115823B true CN106115823B (en) | 2022-07-26 |
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| CN114877728B (en) * | 2022-06-01 | 2023-07-21 | 无锡市豫达换热器有限公司 | High-efficient aluminium system plate-fin heat exchanger of sea water utilization |
| CN116329900B (en) * | 2023-05-25 | 2023-07-28 | 甘肃蓝科石化高新装备股份有限公司 | Manufacturing method of plate heat exchanger plate bundle for air energy storage |
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