CN113959243A - Integrated brazing plate type heat exchanger capable of preventing thermal cracking and production and manufacturing method thereof - Google Patents

Abstract

The invention discloses an integrated brazed plate heat exchanger for preventing thermal cracking and a production method thereof, and relates to the technical field of heat exchangers, which comprises a first outer side plate, a second outer side plate and heat exchange sheets, wherein when a heat exchange medium passes through a first buffer mechanism, a first driving fan is pushed by the heat exchange medium to rotate so as to drive an inner flow disturbing plate to rotate, the flow of passing liquid is adapted by changing the size of the opposite area of through holes on the inner flow disturbing plate and the outer flow disturbing plate, high-flow-rate heat exchange medium is prevented from directly impacting the heat exchange sheets, the rotation of the inner flow disturbing plate in a buffer assembly drives a first driving fan to rotate through the heat exchange medium so as to drive the inner flow disturbing plate to rotate, a power source is not required to be arranged outside, energy is saved, a filtering mechanism can filter impurities in the filtering mechanism when the heat exchange medium passes through, and the heat exchange medium can drive a second driving fan to rotate simultaneously, so that a scraper plate and a cleaning brush clean and scrape the surface of a filter plate, thereby keeping the surface of the filter plate clean.

Description

Integrated brazing plate type heat exchanger capable of preventing thermal cracking and production and manufacturing method thereof

Technical Field

The invention relates to the technical field of heat exchangers, in particular to an integrated brazed plate heat exchanger capable of preventing thermal cracking and a production and manufacturing method thereof.

Background

The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is an ideal device for heat exchange of liquid-liquid and liquid-vapor. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. Under the condition of same pressure loss, the heat transfer coefficient of the heat exchanger is 3-5 times higher than that of a tubular heat exchanger, the occupied area is one third of that of the tubular heat exchanger, the heat recovery rate can reach more than 90 percent, the plate type heat exchanger mainly comprises two types of frame type (detachable type) and brazing type, and the brazing plate type heat exchanger is a novel efficient heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes and performing brazing processing. Thin rectangular channels are formed between the various plates through which heat is exchanged. Compared with the conventional shell-and-tube heat exchanger, the heat transfer coefficient of the heat exchanger is much higher under the condition of the same flow resistance and pump power consumption, and the heat exchanger tends to replace the shell-and-tube heat exchanger in an applicable range.

But general water inlet of brazing type plate heat exchanger is direct butt joint with the pipeline, flow and velocity of flow are all unstable in the pipeline, when the flow is great, rivers directly fill in the fin in the heat exchanger, because brazing type plate heat exchanger is that fin a slice piece stack is got up, the impact of rivers can lead to the slab deformation of water inlet department, produce the phenomenon of weeping easily, lead to the heat exchanger unable to use, the rivers that get into the heat exchanger in addition and carry out heat exchange are at the heat transfer in-process, its inside impurity is easy at the inside scale deposit of fin, lead to the heat exchange efficiency of fin to reduce.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an integrated brazed plate heat exchanger capable of preventing thermal cracking and a production and manufacturing method thereof, and solves the problems that when a liquid heat exchange medium is introduced into a traditional heat exchanger, the heat exchange medium with constantly changing flow velocity directly impacts heat exchange fins, the heat exchanger is easily damaged, and impurities carried in the heat exchange medium are easily in the structure of the heat exchanger, so that the heat exchange efficiency of the heat exchanger is reduced.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a prevent integration brazed plate heat exchanger of heat burst, includes first outer panel, second outside board and heat exchanger fin, one side of first outer panel is provided with the second outside board, be provided with a plurality of heat exchanger fins between first outer panel and the second outside board, a lateral wall of first outer panel is provided with first buffer gear and second buffer gear, first buffer gear is provided with first filtering mechanism and second filtering mechanism respectively with second buffer gear's one end, first filtering mechanism all is provided with the inlet tube with second filtering mechanism's one end.

First buffer gear includes the buffer tube, the one end fixedly connected with first ring flange of buffer tube, and the other end fixedly connected with second ring flange of buffer tube, the inside of buffer tube is provided with the buffering subassembly, and the inner wall of buffer tube has seted up a plurality of installation draw-in grooves with the ring array mode.

The buffer assembly comprises a first transmission shaft, an inner spoiler is fixedly connected to one end of the first transmission shaft, a first driving fan is fixedly connected to the other end of the first transmission shaft, an outer spoiler is arranged between the first transmission shaft and the inner spoiler, the outer spoiler is connected with the first transmission shaft through a bearing, and a plurality of through holes are formed in the outer walls of the first transmission shaft and the outer spoiler.

The first filtering mechanism comprises a filtering pipe, a third flange plate is fixedly connected to one end of the filtering pipe, a fourth flange plate is fixedly connected to the other end of the filtering pipe, a filtering assembly is arranged inside the filtering pipe, a plurality of limiting grooves and fixing grooves are formed in the inner wall of the filtering pipe in an annular array mode, and the limiting grooves and the fixing grooves are distributed alternately.

The filter assembly comprises a second transmission shaft, one end of the second transmission shaft is fixedly connected with a second driving fan, the other end of the second transmission shaft is rotatably connected with a first filter plate assembly, and a second filter plate assembly and a third filter plate assembly are respectively rotatably arranged between the second driving fan and the first filter plate assembly.

Furthermore, the first buffer mechanism and the second buffer mechanism and the first filtering mechanism and the second filtering mechanism are two components with completely identical structures respectively.

Furthermore, the outer wall of the outer spoiler is fixedly connected with an installation block in an annular array mode, a threaded hole is formed in one side wall of the installation block, and the structure of the installation block is matched with the installation clamping groove.

Furthermore, a plurality of fixed blocks are fixedly connected to one side wall of the first filter plate assembly in an annular array mode, and the first filter plate assembly, the second filter plate assembly and the third filter plate assembly are identical in structure except for the fixed block structure.

Furthermore, the second filter plate component comprises a filter plate, a plurality of cleaning brushes and scraping plates are respectively arranged on two side walls of the filter plate, the cleaning brushes and the scraping plates are fixedly connected to the outer wall of the second transmission shaft, and a plurality of limiting blocks are distributed on one side wall of the filter plate in an annular array mode.

Further, the structure and the fixed slot looks adaptation of fixed block, the structure and the spacing groove looks adaptation of stopper, all through bolted connection between fixed block and fixed slot and stopper and the spacing groove.

Furthermore, the first filtering mechanism and the first buffering mechanism are connected with a fourth flange plate through a buffering assembly.

Further, the second driving fan and the first driving fan are both stainless steel members.

The invention also discloses a thermal cracking prevention integrated brazed plate heat exchanger and a production and manufacturing method thereof, and the specific method comprises the following steps:

step one, cutting heat exchange pieces: and taking a large metal plate material, putting the large metal plate material into a cutting machine, and cutting the large metal plate material into a heat exchange plate blank with a required specification and a required shape for later use.

And step two, forming the heat exchange sheet, namely putting the heat exchange sheet cut in the step one into a special mould press, pressing a heat exchange groove on a heat exchange sheet blank, and placing the heat exchange sheet blank aside for later use.

Step three, an assembly process: and taking a first outer side plate and a second outer side plate which are matched with the formed heat exchange plate in shape and specification, then mutually overlapping the heat exchange plates in the step two according to the assembling requirement to finish the pre-assembling work, and then welding the first outer side plate, the second outer side plate and a plurality of heat exchange plates together by means of brazing equipment.

Step four, detecting and warehousing: and (4) conveying the heat exchanger welded and formed in the step three into a detection chamber for detection, and detecting the heat exchange effect and whether leakage projects exist.

Advantageous effects

The invention provides a thermal crack prevention integrated brazed plate heat exchanger and a production and manufacturing method thereof.

Compared with the prior art, the method has the following beneficial effects:

1. an integrated brazing plate type heat exchanger for preventing thermal cracking and a production method thereof are disclosed, which comprises a first outer side plate, a second outer side plate and heat exchange fins, wherein the second outer side plate is arranged on one side of the first outer side plate, a plurality of heat exchange fins are arranged between the first outer side plate and the second outer side plate, a first buffer mechanism and a second buffer mechanism are arranged on one side wall of the first outer side plate, one end of the first buffer mechanism and one end of the second buffer mechanism are respectively provided with a first filtering mechanism and a second filtering mechanism, when a heat exchange medium passes through the first buffer mechanism, a first driving fan is pushed by the heat exchange medium to rotate, so that an inner flow disturbing plate can be driven to rotate, an outer flow disturbing plate is clamped with the flow disturbing plate, the flow of liquid is adapted by changing the size of the opposite area of through holes on the inner flow disturbing plate and the outer flow disturbing plate, when the flow rate of the heat exchange medium is high, the rotating speed of the first driving fan is higher, therefore, the through holes on the inner turbulence plate and the outer turbulence plate are short in dead time, the heat exchange medium is greatly blocked, the flow velocity is reduced, the high-flow-velocity heat exchange medium is prevented from directly impacting the heat exchange plate, and the service life of the heat exchange plate is prolonged.

2. The buffer assembly comprises a first transmission shaft, one end of the first transmission shaft is fixedly connected with an inner spoiler, the other end of the first transmission shaft is fixedly connected with a first driving fan, an outer spoiler is arranged between the first transmission shaft and the inner spoiler, the outer spoiler and the first transmission shaft are connected through a bearing, a plurality of through holes are formed in the outer walls of the first transmission shaft and the outer spoiler, the rotation of the inner spoiler in the buffer assembly drives the first driving fan to rotate through a heat exchange medium to drive the inner spoiler to rotate, a power source does not need to be arranged outside, and energy is saved.

3. The utility model provides an integrated brazed plate heat exchanger of thermal crack prevention and manufacturing method thereof, first filter mechanism and second filter mechanism, filter mechanism can filter its inside impurity when heat transfer medium passes through, and heat transfer medium can drive the rotation of second drive fan simultaneously to scraper blade and cleaning brush clean and strike off the filter plate surface, and then can keep the cleanness on filter plate surface, and heat transfer medium can circulate smoothly.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic exploded perspective view of the present invention;

FIG. 3 is a schematic structural diagram of a first buffer mechanism according to the present invention;

FIG. 4 is an exploded perspective view of a first cushioning mechanism according to the present invention;

FIG. 5 is a perspective view of a structural cushioning assembly of the present invention;

FIG. 6 is a schematic perspective view of a first filter mechanism according to the present invention;

FIG. 7 is an exploded perspective view of a first filter mechanism according to the present invention;

fig. 8 is a perspective view of a second filter plate assembly according to the present invention.

In the figure: 1. a first outer panel; 2. a second exterior plate; 3. a heat exchanger fin; 4. a first buffer mechanism; 401. a buffer tube; 402. a first flange plate; 403. a second flange plate; 404. a buffer assembly; 4041. a first drive shaft; 4042. an inner spoiler; 4043. a first driving fan; 4044. an outer spoiler; 4045. mounting blocks; 4046. a through hole; 405. installing a clamping groove; 5. a first filter mechanism; 501. a filter tube; 502. a third flange plate; 503. a fourth flange plate; 504. a filter assembly; 5041. a second drive shaft; 5042. a second driving fan; 5043. a first filter plate assembly; 5044. a second filter plate assembly; 50441. filtering the plate; 50442. a cleaning brush; 50443. a squeegee; 50444. a limiting block; 5045. a third filter plate assembly; 5046. a fixed block; 505. a limiting groove; 506. fixing grooves; 6. a water inlet pipe; 7. a second buffer mechanism; 8. a second filter mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: an integrated brazing plate type heat exchanger capable of preventing thermal cracking comprises a first outer side plate 1, a second outer side plate 2 and heat exchange fins 3, wherein the second outer side plate 2 is arranged on one side of the first outer side plate 1, a plurality of heat exchange fins 3 are arranged between the first outer side plate 1 and the second outer side plate 2, a first buffer mechanism 4 and a second buffer mechanism 7 are arranged on one side wall of the first outer side plate 1, a first filtering mechanism 5 and a second filtering mechanism 8 are respectively arranged at one ends of the first buffer mechanism 4 and the second buffer mechanism 7, a water inlet pipe 6 is respectively arranged at one ends of the first filtering mechanism 5 and the second filtering mechanism 8, the first buffer mechanism 4 comprises a buffer pipe 401, one end of the buffer pipe 401 is fixedly connected with a first flange 402, the other end of the buffer pipe 401 is fixedly connected with a second flange 403, a buffer component 404 is arranged inside the buffer pipe 401, and a plurality of installation clamping grooves 405 are arranged on the inner wall of the buffer pipe 401 in a ring array mode, the buffer assembly 404 includes a first transmission shaft 4041, an inner baffle 4042 is fixedly connected to one end of the first transmission shaft 4041, a first driving fan 4043 is fixedly connected to the other end of the first transmission shaft 4041, an outer baffle 4044 is disposed between the first transmission shaft 4041 and the inner baffle 4042, the outer baffle 4044 is connected to the first transmission shaft 4041 through a bearing, a plurality of through holes 4046 are disposed on outer walls of the first transmission shaft 4041 and the outer baffle 4044, the first filtering mechanism 5 includes a filtering pipe 501, one end of the filtering pipe 501 is fixedly connected to a third flange 502, the other end of the filtering pipe 501 is fixedly connected to a fourth flange 503, a filtering assembly 504 is disposed inside the filtering pipe 501, a plurality of limiting grooves 505 and fixing grooves 506 are disposed on an inner wall of the filtering pipe 501 in an annular array manner, the limiting grooves 505 and the fixing grooves 506 are alternately distributed, the filtering assembly 504 includes a second transmission shaft 5041, one end of the second transmission shaft 5041 is fixedly connected with a second driving fan 5042, the other end of the second transmission shaft 5041 is rotatably connected with a first filter plate component 5043, a second filter plate component 5044 and a third filter plate component 5045 are respectively and rotatably arranged between the second driving fan 5042 and the first filter plate component 5043, the first buffer mechanism 4, the second buffer mechanism 7, the first filter mechanism 5 and the second filter mechanism 8 are respectively two components with completely same structures, the outer wall of the outer baffle plate 4044 is fixedly connected with a mounting block 4045 in an annular array mode, one side wall of the mounting block 4045 is provided with a threaded hole, the structure of the mounting block 4045 is matched with the mounting slot 405, one side wall of the first filter plate component 5043 is fixedly connected with a plurality of fixing blocks 5046 in an annular array mode, the first filter plate component 5043, the second filter plate component 5044 and the third filter plate component 5045 have completely same structures except for the fixing block 5046 structures, the second filter plate component 5044 includes a filter plate 50441, two side walls of the filter plate 50441 are respectively provided with a plurality of cleaning brushes 50442 and scrapers 50443, the cleaning brushes 50442 and the scrapers 50443 are both fixedly connected to the outer wall of the second transmission shaft 5041, a plurality of limit blocks 50444 are distributed on one side wall of the filter plate 50441 in an annular array manner, the structure of the fixed block 5046 is matched with the fixed groove 506, the structure of the limit block 50444 is matched with the limit groove 505, the fixed block 5046 is connected with the fixed groove 506 and the limit blocks 50444 are connected with the limit groove 505 by bolts, the first filter mechanism 5 is connected with the first buffer mechanism 4 by the buffer component 404 and the fourth flange 503, and the second driving fan 5042 and the first driving fan 4043 are both members made of stainless steel.

The invention also discloses a production and manufacturing method of the integrated brazing plate type heat exchanger for preventing the thermal cracking, which comprises the following steps:

step one, cutting heat exchange pieces: and taking a large metal plate material, putting the large metal plate material into a cutting machine, and cutting the large metal plate material into a heat exchange plate 3 blank with a required specification and a required shape for later use.

And step two, forming the heat exchange plate, namely putting the heat exchange plate 3 cut in the step one into a special mould press, pressing a heat exchange groove on a blank of the heat exchange plate 3, and placing the heat exchange plate aside for later use.

Step three, an assembly process: and taking a first outer side plate 1 and a second outer side plate 2 which are matched with the formed heat exchange plate in shape and specification, then mutually overlapping the heat exchange plates 3 in the step two according to the assembly requirement to finish the pre-assembly work, and then welding the first outer side plate 1, the second outer side plate 2 and the plurality of heat exchange plates 3 together by means of brazing equipment.

Step four, detecting and warehousing: and (4) conveying the heat exchanger welded and formed in the step three into a detection chamber for detection, and detecting the heat exchange effect and whether leakage projects exist.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a prevent integration brazed plate heat exchanger of hot crack, includes first outer panel (1), second outside board (2) and fin (3), one side of first outer panel (1) is provided with second outside board (2), be provided with a plurality of fins (3), its characterized in that between first outer panel (1) and second outside board (2): a first buffer mechanism (4) and a second buffer mechanism (7) are arranged on one side wall of the first outer side plate (1), a first filtering mechanism (5) and a second filtering mechanism (8) are respectively arranged at one ends of the first buffer mechanism (4) and the second buffer mechanism (7), and water inlet pipes (6) are respectively arranged at one ends of the first filtering mechanism (5) and the second filtering mechanism (8);

the first buffer mechanism (4) comprises a buffer tube (401), one end of the buffer tube (401) is fixedly connected with a first flange plate (402), the other end of the buffer tube (401) is fixedly connected with a second flange plate (403), a buffer assembly (404) is arranged inside the buffer tube (401), and a plurality of mounting clamping grooves (405) are formed in the inner wall of the buffer tube (401) in a ring array mode;

the buffer assembly (404) comprises a first transmission shaft (4041), one end of the first transmission shaft (4041) is fixedly connected with an inner current disturbing plate (4042), the other end of the first transmission shaft (4041) is fixedly connected with a first driving fan (4043), an outer current disturbing plate (4044) is arranged between the first transmission shaft (4041) and the inner current disturbing plate (4042), the outer current disturbing plate (4044) is connected with the first transmission shaft (4041) through a bearing, and a plurality of through holes (4046) are formed in the outer walls of the first transmission shaft (4041) and the outer current disturbing plate (4044);

the first filtering mechanism (5) comprises a filtering pipe (501), one end of the filtering pipe (501) is fixedly connected with a third flange plate (502), the other end of the filtering pipe (501) is fixedly connected with a fourth flange plate (503), a filtering assembly (504) is arranged inside the filtering pipe (501), a plurality of limiting grooves (505) and fixing grooves (506) are formed in the inner wall of the filtering pipe (501) in an annular array mode, and the limiting grooves (505) and the fixing grooves (506) are alternately distributed;

the filter assembly (504) includes second transmission shaft (5041), the one end fixedly connected with second driving fan (5042) of second transmission shaft (5041), and the other end of second transmission shaft (5041) rotates and is connected with first filter plate subassembly (5043), it is provided with second filter plate subassembly (5044) and third filter plate subassembly (5045) to rotate respectively between second driving fan (5042) and first filter plate subassembly (5043).

2. The integrated brazed plate heat exchanger of claim 1, wherein: the first buffer mechanism (4) and the second buffer mechanism (7) as well as the first filtering mechanism (5) and the second filtering mechanism (8) are two components with completely same structures respectively.

3. The integrated brazed plate heat exchanger of claim 1, wherein: the outer wall of outer spoiler (4044) is with annular array mode fixedly connected with installation piece (4045), the screw hole is seted up to a lateral wall of installation piece (4045), and the structure and the installation draw-in groove (405) looks adaptation of installation piece (4045).

4. The integrated brazed plate heat exchanger of claim 1, wherein: a plurality of fixed blocks (5046) are fixedly connected to one side wall of the first filter plate assembly (5043) in an annular array mode, and the first filter plate assembly (5043), the second filter plate assembly (5044) and the third filter plate assembly (5045) have the same structure except for the structure of the fixed blocks (5046).

5. The integrated brazed plate heat exchanger resistant to thermal cracking according to claim 4, wherein: the second filter plate assembly (5044) comprises a filter plate (50441), a plurality of cleaning brushes (50442) and scrapers (50443) are respectively arranged on two side walls of the filter plate (50441), the cleaning brushes (50442) and the scrapers (50443) are fixedly connected to the outer wall of the second transmission shaft (5041), and a plurality of limiting blocks (50444) are distributed on one side wall of the filter plate (50441) in an annular array mode.

6. The integrated brazed plate heat exchanger of claim 5, wherein: the structure and the fixed slot (506) of fixed block (5046) are adapted, the structure and the spacing groove (505) of stopper (50444) are adapted, fixed block (5046) and fixed slot (506) and stopper (50444) and spacing groove (505) are all connected through bolt.

7. The integrated brazed plate heat exchanger of claim 1, wherein: the first filtering mechanism (5) and the first buffer mechanism (4) are connected with a fourth flange plate (503) through a buffer component (404).

8. The integrated brazed plate heat exchanger of claim 1, wherein: the second driving fan (5042) and the first driving fan (4043) are both stainless steel members.

9. A method of manufacturing a thermally crack resistant integrated brazed plate heat exchanger according to any of claims 1 to 8, characterized in that: the method comprises the following steps:

step one, cutting heat exchange pieces: taking a large metal plate material, putting the large metal plate material into a cutting machine, and cutting the large metal plate material into blanks of heat exchange plates (3) with required specifications and shapes for later use;

step two, forming the heat exchange plate, namely putting the heat exchange plate (3) cut in the step one into a special mould press, pressing a heat exchange groove on a blank of the heat exchange plate (3), and placing one side for later use;

step three, an assembly process: taking a first outer side plate (1) and a second outer side plate (2) which are matched with the formed heat exchange plate in shape and specification, then mutually overlapping the heat exchange plates (3) in the step two according to the assembly requirement to finish pre-assembly work, and then welding the first outer side plate (1), the second outer side plate (2) and a plurality of heat exchange plates (3) together by means of brazing equipment;

step four, detecting and warehousing: and (4) conveying the heat exchanger welded and formed in the step three into a detection chamber for detection, and detecting the heat exchange effect and whether leakage projects exist.

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