CN215177120U - Plate-type waste heat recovery module with anti-corrosion function - Google Patents

Abstract

The utility model relates to a plate-type waste heat recovery module with anti-corrosion function, which comprises an inlet bin body, a heat exchange module and an outlet bin body. The entry storehouse body sets up the fluoroplastics inside lining for carbon steel material, inside sets up some fluoroplastics material guide plates. The shell of the heat exchange module is made of stainless steel, and a series of heat collecting plates are arranged in parallel and at equal intervals inside the shell. The heat collecting plate is formed by welding two stainless steel sheets, edge welding is needed to be carried out on the heat collecting plate for preventing the edges of the heat collecting plate from being corroded, and meanwhile, the surface of the heat collecting plate, including the edge welding line, is sprayed with a fluorine-containing resin coating. The outlet bin body is made of carbon steel and is provided with a fluoroplastic lining. The utility model has the advantages that: the method has the advantages of effective corrosion prevention, low investment cost, high waste heat recovery efficiency, short investment return period and low fluid resistance.

Description

Plate-type waste heat recovery module with anti-corrosion function

Technical Field

The utility model relates to an exhaust heat recovery field specifically is a plate-type exhaust heat recovery module of anticorrosion function.

Background

With the development of society, energy shortage becomes a topic facing the whole mankind, and the development of new energy and the reuse of waste heat become important for the research of people. Waste heat recovery is also very practical for an enterprise, and can save a large amount of energy cost for the enterprise.

At present, waste heat recovery mainly aims at high-temperature gas and high-temperature liquid, high-temperature fluid and low-temperature fluid (mainly water) are utilized to exchange heat in a heat exchanger, and after heat exchange, the heated water can be used for other process sections needing hot water or heating.

Most of the prior art use tube and fin tube heat exchangers for waste heat recovery of waste hot gas, but whatever the heat exchangers, they have a problem that if the waste hot gas has certain corrosiveness, such as chlorine and fluorine, metal materials are corroded quickly. The fluoroplastic tube heat exchangers exist in the market at present, the problem of corrosion is solved to a certain extent, but the fluoroplastic heat conductivity is poor, the price is high, the same heat exchange amount is caused, the heat exchange area of the fluoroplastic tube heat exchanger is many times larger than that of a metal tube heat exchanger, the appearance of equipment is very large, and meanwhile, the cost is extremely high. In addition, because the resistance drop of the tube array and finned tube heat exchangers is large, many customers have to pass through the fluid by adding a booster fan or a pump, so that the equipment purchase cost is increased, and the later-period operation and maintenance cost is also increased.

Waste heat liquid multi-purpose plate heat exchanger carries out waste heat recovery, plate heat exchanger liquid heat exchange efficiency is very high, but the problem of corruption can't be solved equally, it is faster to corrode even, because plate heat exchanger's slab is very thin, the conventionality is at 0.4-0.6mm, thickest also does not exceed 0.8mm, it pierces through to corrode very easily, in addition, all there is the gasket between plate heat exchanger's the slab, these gaskets themselves just age very easily, under the corrosive environment of high fever, ageing speed is accelerated, can need often to change the gasket, and influence production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plate-type waste heat recovery module of anticorrosion function to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: comprises an inlet bin body, a heat exchange module and an outlet bin body. The entry storehouse body is the carbon steel material, sets up the fluoroplastics inside lining, and inside sets up some fluoroplastics material guide plates. The heat exchange module shell is made of stainless steel, and a series of heat collecting plates are arranged in parallel and at equal intervals inside the heat exchange module shell. The heat collecting plate is formed by welding two stainless steel sheets, edge welding is needed to be carried out on the heat collecting plate for preventing the edges of the heat collecting plate from being corroded, and meanwhile, the surface of the heat collecting plate, including the edge welding seam, is sprayed with a fluorine-containing resin coating. The export storehouse body adopts carbon steel material, sets up the fluoroplastics inside lining.

Preferably, the inlet bin body is a variable diameter with a section of a hemispherical shape and is connected with an external air inlet pipe and a heat exchange module, a square port is welded with the upper end of the heat exchange module, a round port is in flexible connection with an external air inlet pipe, and a plurality of guide plates are arranged in the inlet bin body to guide air flow to be uniformly distributed to enter the heat exchange module. The guide plate is also made of fluoroplastic materials and is connected with a fluoroplastic lining of the inlet bin body into a whole.

Preferably, the heat exchange module is externally provided with a stainless steel shell, a series of heat collecting plates are dispersedly arranged in the heat exchange module, certain intervals are reserved among the heat collecting plates to form a channel for waste heat fluid, and the inner surface of the shell of the heat exchange module and the outer surfaces of the heat collecting plates are sprayed with fluorine-containing resin coatings to prevent corrosive substances contained in the waste heat fluid from corroding the heat collecting plates.

Preferably, the heat collecting plate is formed by welding two stainless steel sheets by laser, after the heat collecting plate is pressed, welding points of the two stainless steel sheets are connected, the non-welding points are separated, a channel through which a liquid heat exchange medium can flow is formed, and the welded guide lines can guide the heat exchange medium to all areas of the heat collecting plate.

Preferably, one side of the heat collecting plates is provided with a heat exchange medium inlet and a heat exchange medium outlet, the inlets and the outlets of all the heat collecting plates extend out of the heat exchange module shell and are welded and sealed, a semi-tubular inlet header pipe and a semi-tubular outlet header pipe are arranged outside the inlets and the outlets and are communicated with the inlet and the outlet of each heat collecting plate, and the middle parts of the inlet header pipe and the outlet header pipe are respectively provided with an inlet manifold and an outlet manifold which are connected with external heat exchange medium pipelines.

Preferably, the outlet bin body is a section of variable diameter in a round-sky-square place, the heat exchange module is connected with an external exhaust pipeline, the square port is welded with the heat exchange module, and the round port is in flexible connection with the external exhaust pipeline.

Compared with the prior art, the beneficial effects of the utility model are that:

1. can effectively prevent corrosion: the fluoroplastic inside lining that the storehouse body of entry and the storehouse body of export set up, the contact of carbon steel and corrosive fluids has been completely cut off, the guide plate itself is exactly the fluoroplastic material, can not produce the corruption, heat exchange module casing inboard and receipts hot plate outside are all sprayed and are had fluororesin's coating, protect inside stainless steel, the limit seam department of receiving the hot plate simultaneously has also welded, the storehouse body of entry in addition, all weld between heat exchange module, the export module, the at utmost prevents the erosion of corrosive fluids.

2. The waste heat recovery efficiency is high: the relative tubulation reynolds number of heat-collecting plate is higher, and the heat transfer effect is better, and stainless steel's heat conductivity is better than fluoroplastics a lot, even the outside has covered the very thin anticorrosive coating of one deck, but overall, the heat conductivity also is better a lot than fluoroplastics, consequently under the same heat transfer area, can retrieve more heat.

3. The investment cost is low: no matter carbon steel or common stainless steel, the unit price is lower than that of fluoroplastic, and the heat exchange efficiency of the heat collecting plate is high, so that the heat exchange area required by the whole waste heat recovery module is smaller, and the cost is lower.

4. The investment return period is short: the investment return period is shorter due to the relatively low cost of the equipment and the higher waste heat recovery efficiency.

5. Reduction of the fluid resistance: the heat collecting plates arranged in parallel are parallel to the flow direction of the waste heat fluid, so that smaller resistance drop is ensured, the side resistance drop of the waste heat fluid is usually not higher than 1kPa, the normal passing of most of fluids can be met, and a booster fan or a pump is not required to be additionally arranged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a heat collecting plate;

FIG. 3 is a partial enlarged view of the heat collecting plate;

fig. 4 is a side view of the present invention;

in the figure: 1. an inlet bin body; 2. a heat exchange module; 3. an outlet bin body; 4. a heat collecting plate; 5. a load bearing slot; 6. a lateral clamping groove; 7. an upper clamping groove; 8. an outlet manifold; 9. an inlet manifold; 10. an outlet manifold; 11. an inlet manifold; 12. a baffle; 13. a heat exchange medium outlet; 14. a heat exchange medium inlet; 15. A diversion line; 16. welding spots; 17. an edge weld; 18. a fluorine-containing resin coating; 19. and (4) fluoroplastic lining.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The utility model provides a board-like waste heat recovery module of anticorrosion function, includes the storehouse body 1 of entry, heat exchange module 2 and the storehouse body 3 of export, the storehouse body 1 of entry is the reducing in one section sky circle place, connects outside intake pipe and heat exchange module 2, and square port welds with the 2 upper ends of heat exchange module, and circular port and outside inlet duct flexible coupling, the storehouse body 1 inside of entry sets up some guide plates 12, and the guide air current evenly distributed gets into heat exchange module 2. The guide plate 12 is also made of fluoroplastic material and is connected with a fluoroplastic lining arranged on the inlet bin body 1 into a whole. The heat exchange module 2 is externally provided with a stainless steel shell, a series of heat collecting plates 4 are dispersedly arranged in the heat exchange module 2, certain intervals are reserved between the heat collecting plates 4 to form a channel for waste heat fluid, and the inner surface of the shell of the heat exchange module 2 and the outer surfaces of the heat collecting plates 4 are both sprayed with fluorine-containing resin coatings 18 to prevent corrosive substances contained in the waste heat fluid from corroding the heat collecting plates 4. The heat collecting plate 4 is formed by welding two stainless steel sheets by laser, welding spots 16 of the two stainless steel sheets are connected after the two stainless steel sheets are pressed, the non-welding spots are separated, a channel through which a liquid heat exchange medium can flow is formed, and the welded guide lines 15 can guide the heat exchange medium to flow to all areas of the heat collecting plate 4. One side of the heat collecting plates 4 is provided with a heat exchange medium inlet 14 and a heat exchange medium outlet 13, inlets and outlets of all the heat collecting plates 4 extend out of the shell of the heat exchange module 2 and are welded and sealed, a semi-tubular inlet header pipe 9 and a semi-tubular outlet header pipe 8 are arranged outside the inlets and outlets and are communicated with the inlets and outlets of each heat collecting plate 4, and the middle parts of the inlet header pipe 9 and the outlet header pipe 8 are respectively provided with an inlet manifold 11 and an outlet manifold 10 which are connected with external heat exchange medium pipelines. The outlet bin body 3 is a variable diameter with a section of a hemispherical shape and is used for connecting the heat exchange module 2 with an external exhaust pipeline, a square port is welded with the heat exchange module 2, and a circular port is in flexible connection with the external exhaust pipeline.

Claims (6)

1. The utility model provides a plate-type waste heat recovery module of anticorrosion function which characterized in that: including the entry storehouse body (1), heat exchange module (2) and the export storehouse body (3), the entry storehouse body (1) is the carbon steel material, sets up fluoroplastics inside lining (19), and inside sets up some fluoroplastics material guide plate (12), heat exchange module (2) casing is stainless steel material, and a series of receipts hot plate (4) have been arranged to inside parallel, equidistance, receipts hot plate (4) are formed by two stainless steel sheet welds, for preventing to receive hot plate (4) border corruption, receive hot plate (4) and need carry out the edge weld, receive the surface of hot plate (4) simultaneously, include all spraying fluorine-containing resin coating (18) of edge weld (17) department, the export storehouse body (3) adopts the carbon steel material, sets up fluoroplastics inside lining (19).

2. The corrosion-protected plate-type waste heat recovery module according to claim 1, wherein: the inlet bin body (1) is a variable diameter of one section of hemispherical dome, an external air inlet pipe and a heat exchange module (2) are connected, a square port is welded to the upper end of the heat exchange module (2), a circular port is in flexible connection with an external air inlet pipeline, a plurality of guide plates (12) are arranged inside the inlet bin body (1), air flow is guided to be uniformly distributed to enter the heat exchange module (2), the guide plates (12) are also made of fluoroplastic materials, and are connected with a fluoroplastic lining (19) arranged on the inlet bin body (1) into a whole.

3. The corrosion-protected plate-type waste heat recovery module according to claim 1, wherein: the stainless steel shell is arranged outside the heat exchange module (2), a series of heat collecting plates (4) are dispersedly arranged inside the heat exchange module, certain intervals are reserved between the heat collecting plates (4) to form a channel for waste heat fluid, and the inner surface of the shell of the heat exchange module (2) and the outer surface of each heat collecting plate (4) are sprayed with a fluorine-containing resin coating (18) to prevent corrosive substances contained in the waste heat fluid from corroding the heat collecting plates (4).

4. The corrosion-protected plate-type waste heat recovery module according to claim 1, wherein: the heat collecting plate (4) is formed by welding two stainless steel sheets in a laser mode, welding points (16) of the two stainless steel sheets are connected after the two stainless steel sheets are pressed, the parts which are not welded are separated, a channel capable of flowing heat exchange media is formed, and welded flow guide lines (15) can guide the heat exchange media to flow to all areas of the heat collecting plate (4).

5. The corrosion-protected plate-type waste heat recovery module according to claim 1, wherein: one side of the heat collecting plates (4) is provided with a heat exchange medium inlet (14) and a heat exchange medium outlet (13), the inlets and the outlets of all the heat collecting plates (4) extend out of the shell of the heat exchange module (2) and are welded and sealed, a semi-tubular inlet header pipe (9) and a semi-tubular outlet header pipe (8) are arranged outside the inlets and the outlets and are communicated with the inlets and the outlets of all the heat collecting plates (4), and an inlet manifold (11) and an outlet manifold (10) are arranged in the middle of each inlet header pipe (9) and each outlet header pipe (8) and are connected with an external heat exchange medium pipeline.

6. The corrosion-protected plate-type waste heat recovery module according to claim 1, wherein: the outlet bin body (3) is a variable diameter with one section of a hemispherical shape and is connected with the heat exchange module (2) and an external exhaust pipeline, a square port is welded with the heat exchange module (2), and a circular port is in flexible connection with the external exhaust pipeline.

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