A corrosion-resistant plate heat exchanger and heat exchange method thereof

By introducing threaded rods and corrugated pipes into the plate heat exchanger and combining the use of sealing gaskets, the problem of easy corrosion in corrosive media by traditional plate heat exchangers is solved, achieving higher corrosion resistance and maintenance convenience.

CN119756036APending Publication Date: 2025-04-04JIANGSU HANGYE ENERGY TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411959312.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

When traditional plate heat exchangers deal with highly corrosive media for a long time, they are susceptible to corrosion, resulting in a shortening of equipment life, an increase in maintenance costs and an increase in safety risks.

Method used

A corrosion-resistant plate heat exchanger is designed. By providing a threaded rod inside the first fixing plate, the plate can be moved horizontally on the outer surface of the threaded rod, and the second fixing plate can also be moved on the outer surface of the threaded rod. Combined with the corrugated pipe and sealing gasket, the extrusion and fixation of the plate and the effective isolation of the fluid are achieved.

Benefits of technology

This design makes plate heat exchangers have higher corrosion resistance in corrosive media, making it easier for operators to disassemble, install, clean and maintain, extend equipment life and reduce maintenance costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119756036A_ABST
    Figure CN119756036A_ABST
Patent Text Reader

Abstract

The present invention relates to the field of heat exchange technology, and discloses a corrosion-resistant plate heat exchanger and a heat exchange method thereof, comprising a first fixed plate, a heat exchange mechanism is arranged above the first fixed plate, a moving mechanism is arranged below the first fixed plate, the heat exchange mechanism comprises a threaded rod, the number of the threaded rods is two, one end of the two threaded rods is respectively arranged at the upper middle part and the lower middle part of the first fixed plate, and a number of plates are evenly arranged on the right side of the outer surface of the threaded rod. The corrosion-resistant plate heat exchanger and the heat exchange method thereof, through the threaded rod arranged inside the first fixed plate, the plate can be horizontally moved on the outer surface of the threaded rod, the second fixed plate can also be moved on the outer surface of the threaded rod, the plate is squeezed, the first nut and the threaded rod are threaded and rotated, and the second fixed plate is squeezed and fixed, so that it is convenient for operators to disassemble, clean and maintain the device.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange, and in particular to a corrosion-resistant plate heat exchanger and a heat exchange method thereof. Background Art

[0002] A plate heat exchanger is a highly efficient heat exchange device. It is composed of a series of stacked metal sheets with a certain corrugated shape. Narrow rectangular flow channels are formed between these metal sheets. Through these flow channels, two fluids with different temperatures can exchange heat. Plate heat exchangers have been widely used in many industries due to their efficient and compact design, such as chemical industry, food processing, pharmaceuticals, heating, ventilation and air conditioning (HVAC), energy and water treatment.

[0003] When plate heat exchangers are used to process highly corrosive media for a long time, plate heat exchangers made of traditional materials are easily affected by corrosion. Some corrosive substances will adhere to the inside of the plate heat exchanger, making it troublesome to disassemble and clean it, and the workers' workload is high, resulting in a shortened equipment life, increased maintenance costs, and increased safety hazards. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a corrosion-resistant plate heat exchanger and a heat exchange method thereof, which have the advantages of being convenient for operators to disassemble, clean and maintain the device, and solve the problems mentioned in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrosion-resistant plate heat exchanger comprises a first fixed plate, a heat exchange mechanism is arranged above the first fixed plate, a moving mechanism is arranged below the first fixed plate, the heat exchange mechanism comprises a threaded rod, the number of the threaded rods is two, one end of the two threaded rods is respectively arranged at the middle upper part and the middle lower part of the first fixed plate, a number of plates are evenly arranged on the right side of the outer surface of the threaded rod, a first nut is arranged on one side of the left and right sides of the outer surface of the threaded rod close to the edge, a limiting disk is fixedly connected to the left side of the threaded rod, a second fixed plate is arranged on the right side of the outer surface of the threaded rod, water inlet pipes are fixedly connected at the two upper corners of the right side of the second fixed plate, water outlet pipes are fixedly connected at the two lower corners of the right side of the second fixed plate, flow holes are opened at the four corners of one side of the plate, and bellows are arranged on the left and right sides of the plate.

[0008] Preferably, there are slots at the left and right edges of the circulation hole, the four right corners of the first fixing plate, and the four left corners of the second fixing plate, and a gasket is provided on the outside of one side of the slot.

[0009] A number of card slots are respectively embedded in one side edge of the flow hole and the four right corners of the first fixed plate and the four left corners of the second fixed plate. The gasket can be embedded in the inside of the card slot and located between the flow holes opened by two adjacent plates to ensure the sealing of the flow hole.

[0010] Preferably, rectangular grooves are provided in the middle of the left and right sides of the plate close to the front side and the middle of the side close to the back side, and a sealing gasket is provided on the outside of one side of the rectangular groove.

[0011] A number of rectangular grooves are respectively embedded on both sides of the left side of the plate, and the sealing gasket can be stuck between two adjacent rectangular grooves to prevent the two fluids from mixing and ensure a good sealing effect.

[0012] Preferably, the moving mechanism comprises a support block, the upper surface of the support block is fixedly connected to the middle of the lower surface of the first fixed plate, the bottom of the support block is fixedly connected to a base plate, and the four corners of the lower surface of the base plate are fixedly connected to supporting feet.

[0013] Preferably, a slide groove is provided in the middle of the right side of the upper surface of the bottom plate, a threaded shaft is fixedly connected to the middle of the lower surface of the second fixing plate, and a second nut is provided below the outer surface of the threaded shaft.

[0014] The support block supports the bottom of the first fixed plate, and the bottom is vertically connected to the middle left part of the upper surface of the bottom plate. The support foot supports the bottom plate. The slide groove runs through the middle right part of the upper surface of the bottom plate. The top of the threaded shaft is vertically connected to the middle part of the lower surface of the second fixed plate, and runs through the inside of the slide groove, and can slide inside the slide groove. When the second fixed plate moves, the threaded shaft drives the movement, and the second nut and the threaded shaft perform a threaded rotation movement to fix the position of the threaded shaft and improve the stability of the second fixed plate.

[0015] First, place four washers in the grooves at the four right corners of the first fixed plate, respectively, put a number of prepared plates on the outer surfaces of the two threaded rods, place washers in the grooves between two adjacent plates, place sealing pads in the rectangular groove, then move to the left and extrude, place washers at the four left corners of the second fixed plate, put the second fixed plate on the outside of the two threaded rods, extrude the plates to the left, screw the first nut on the right side of the outer surface of the threaded rod, fix the second fixed plate and the plates, and finally screw the second nut on the outside of the threaded shaft to fix the threaded shaft. The cold fluid and the hot fluid enter the plates through the water inlet pipes respectively, and then flow out through the water outlet pipes to complete the heat exchange process.

[0016] Compared with the prior art, the present invention provides a corrosion-resistant plate heat exchanger and a heat exchange method thereof, which have the following beneficial effects:

[0017] 1. The corrosion-resistant plate heat exchanger and the heat exchange method thereof, through the threaded rod arranged inside the first fixed plate, the plate can be horizontally moved on the outer surface of the threaded rod, the second fixed plate can also be moved on the outer surface of the threaded rod to squeeze the plate, the first nut and the threaded rod are threadedly rotated to squeeze and fix the second fixed plate, so as to facilitate the operator to disassemble, clean and maintain the device.

[0018] 2. The corrosion-resistant plate heat exchanger and the heat exchange method thereof can improve the fluid flow characteristics, reduce local stress concentration, and enhance the corrosion resistance through the bellows arranged on both sides of the plate. The bellows are spiral in shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the side view structure of the plate of the present invention;

[0022] Figure 4 It is a schematic diagram of the overall structure of the plate of the present invention.

[0023] Wherein: 1. first fixed plate; 2. heat exchange mechanism; 201. threaded rod; 202. plate; 203. first nut; 204. limit plate; 205. second fixed plate; 206. water inlet pipe; 207. water outlet pipe; 208. flow hole; 209. bellows; 210. slot; 211. gasket; 212. rectangular slot; 213. sealing gasket; 3. moving mechanism; 301. support block; 302. bottom plate; 303. support foot; 304. slide groove; 305. threaded shaft; 306. second nut. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-4A corrosion-resistant plate heat exchanger comprises a first fixed plate 1, a heat exchange mechanism 2 is arranged above the first fixed plate 1, a moving mechanism 3 is arranged below the first fixed plate 1, the heat exchange mechanism 2 comprises a threaded rod 201, the number of the threaded rod 201 is two, one end of the two threaded rods 201 is respectively arranged at the middle of the upper part and the middle of the lower part of the first fixed plate 1, a number of plates 202 are evenly arranged on the right side of the outer surface of the threaded rod 201, a first nut 203 is arranged on one side near the edge of the left and right sides of the outer surface of the threaded rod 201, a limiting disk 204 is fixedly connected to the left side of the threaded rod 201, a second fixed plate 205 is arranged on the right side of the outer surface of the threaded rod 201, an inlet pipe 206 is fixedly connected to the two upper corners of the right side of the second fixed plate 205, an outlet pipe 207 is fixedly connected to the two lower corners of the right side of the second fixed plate 205, and a circulation pipe 206 is opened at the four corners of one side of the plate 202 Hole 208, bellows 209 are provided on the left and right sides of the plate 202, the left sides of the two threaded rods 201 respectively penetrate the upper middle part and the lower middle part of the interior of the first fixed plate 1, the plate 202 is sleeved on the outer surface of the threaded rod 201, and can move on its outer surface, the first nut 203 and the threaded rod 201 perform threaded rotation movement, which is responsible for squeezing and fixing the second fixed plate 205, and the limit plate 204 is used to limit the first nut 203 on the left side. The plate 202 is made of stainless steel material and has good corrosion resistance. The fluid enters the device through the water inlet pipe 206 and then flows out from the water outlet pipe 207. The four flow holes 208 respectively penetrate the four corners of the plate 202, and the bellows 209 is spiral in shape, which not only increases the contact area, but also promotes fluid turbulence, improves heat transfer efficiency, improves fluid flow characteristics, reduces local stress concentration, and enhances corrosion resistance.

[0026] Specifically, Figure 3 and Figure 4 As shown, slots 210 are provided at the left and right edges of the flow hole 208 and at the four right corners of the first fixing plate 1 and the four left corners of the second fixing plate 205 , and a gasket 211 is provided on one side of the slot 210 .

[0027] Through the above technical solution, a number of card slots 210 are respectively embedded in one side edge of the circulation hole 208 and the four right corners of the first fixed plate 1 and the four left corners of the second fixed plate 205. The gasket 211 can be embedded in the inside of the card slot 210 and located between the circulation holes 208 opened by two adjacent plates 202 to ensure the sealing of the circulation hole 208.

[0028] Specifically, Figure 3 and Figure 4As shown, rectangular grooves 212 are provided at the middle of the left and right sides of the plate 202 close to the front side and the middle of the side close to the back side, and a sealing gasket 213 is provided outside one side of the rectangular groove 212 .

[0029] Through the above technical solution, a number of rectangular grooves 212 are respectively embedded in the left sides of the plate 202, and the sealing gasket 213 can be stuck between two adjacent rectangular grooves 212 to prevent the two fluids from mixing and ensure a good sealing effect.

[0030] Specifically, Figure 2 As shown, the moving mechanism 3 includes a support block 301, the upper surface of the support block 301 is fixedly connected to the middle of the lower surface of the first fixed plate 1, the bottom of the support block 301 is fixedly connected to a base plate 302, the four corners of the lower surface of the base plate 302 are fixedly connected with support feet 303, a slide groove 304 is provided in the middle of the right side of the upper surface of the base plate 302, a threaded shaft 305 is fixedly connected to the middle of the lower surface of the second fixed plate 205, and a second nut 306 is provided below the outer surface of the threaded shaft 305.

[0031] Through the above technical solution, the support block 301 supports the bottom of the first fixed plate 1, and the bottom is vertically connected to the middle left part of the upper surface of the bottom plate 302. The support foot 303 supports the bottom plate 302. The slide groove 304 runs through the middle right part of the upper surface of the bottom plate 302. The top of the threaded shaft 305 is vertically connected to the middle part of the lower surface of the second fixed plate 205, and runs through the inside of the slide groove 304, and can slide inside the slide groove 304. When the second fixed plate 205 moves, the threaded shaft 305 is driven to move. The second nut 306 and the threaded shaft 305 perform a threaded rotation movement to fix the position of the threaded shaft 305, thereby improving the stability of the second fixed plate 205.

[0032] When in use, first place four washers 211 in the slots 210 at the four corners of the right side of the first fixed plate 1, respectively, put a number of prepared plates 202 on the outer surfaces of the two threaded rods 201, place washers 211 in the slots 210 between two adjacent plates 202, place sealing gaskets 213 in the rectangular grooves 212, then move and squeeze to the left, place washers 211 at the four corners of the left side of the second fixed plate 205, put the second fixed plate 205 on the outside of the two threaded rods 201, squeeze the plate 202 to the left, screw the first nut 203 on the right side of the outer surface of the threaded rod 201, fix the second fixed plate 205 and the plate 202, finally screw the second nut 306 on the outside of the threaded shaft 305, fix the threaded shaft 305, and the cold fluid and the hot fluid enter the plate 202 through the water inlet pipe 206 respectively, and then flow out from the water outlet pipe 207 to complete the heat exchange process.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant plate heat exchanger, comprising a first fixing plate (1), characterized in that: A heat exchange mechanism (2) is arranged above the first fixed plate (1), and a moving mechanism (3) is arranged below the first fixed plate (1). The heat exchange mechanism (2) comprises a threaded rod (201), and the number of the threaded rods (201) is two. One end of the two threaded rods (201) is respectively arranged at the middle of the upper part and the middle of the lower part of the first fixed plate (1). A number of plates (202) are evenly arranged on the right side of the outer surface of the threaded rod (201). The outer surface of the threaded rod (201) is provided with a first heat exchange mechanism (201) on both sides of the left and right sides of the outer surface of the threaded rod (201) near the edge. a nut (203), the left side of the threaded rod (201) is fixedly connected to a limiting plate (204), the right side of the outer surface of the threaded rod (201) is provided with a second fixing plate (205), the two upper corners of the right side of the second fixing plate (205) are fixedly connected to water inlet pipes (206), the two lower corners of the right side of the second fixing plate (205) are fixedly connected to water outlet pipes (207), the four corners of one side of the plate (202) are provided with flow holes (208), and the left and right sides of the plate (202) are provided with bellows (209).

2. A corrosion-resistant plate heat exchanger according to claim 1, characterized in that: Slots (210) are provided at the left and right edges of the circulation hole (208), the four right corners of the first fixing plate (1), and the four left corners of the second fixing plate (205), and a gasket (211) is provided on the outside of one side of the slot (210).

3. The corrosion-resistant plate heat exchanger according to claim 1, characterized in that: A rectangular groove (212) is provided in the middle of one side close to the front and the middle of one side close to the back on both sides of the plate (202), and a sealing gasket (213) is provided on the outside of one side of the rectangular groove (212).

4. The corrosion-resistant plate heat exchanger according to claim 1, characterized in that: The moving mechanism (3) comprises a support block (301), the upper surface of the support block (301) is fixedly connected to the middle part of the lower surface of the first fixed plate (1), the bottom of the support block (301) is fixedly connected to a base plate (302), and the four corners of the lower surface of the base plate (302) are fixedly connected to supporting feet (303).

5. The corrosion-resistant plate heat exchanger according to claim 1, characterized in that: A sliding groove (304) is provided in the middle of the right side of the upper surface of the bottom plate (302), a threaded shaft (305) is fixedly connected to the middle of the lower surface of the second fixing plate (205), and a second nut (306) is provided below the outer surface of the threaded shaft (305).

6. A corrosion-resistant plate heat exchanger heat exchange method according to claims 1-6, characterized in that: First, four washers (211) are respectively placed in the slots (210) at the four corners of the right side of the first fixing plate (1), and a number of prepared plates (202) are respectively sleeved on the outer surfaces of the two threaded rods (201), and washers (211) are respectively placed in the slots (210) between two adjacent plates (202), and a sealing gasket (213) is placed in the rectangular groove (212), and then moved to the left and squeezed, and washers (211) are respectively placed at the four corners of the left side of the second fixing plate (205), and the second fixing plate is fixed. (205) is sleeved on the outside of the two threaded rods (201), the plate (202) is squeezed to the left, the first nut (203) is screwed on the right side of the outer surface of the threaded rod (201), the second fixing plate (205) and the plate (202) are fixed, and finally the second nut (306) is screwed on the outside of the threaded shaft (305) to fix the threaded shaft (305), the cold fluid and the hot fluid respectively enter the plate (202) through the water inlet pipe (206), and then flow out through the water outlet pipe (207), completing the heat exchange process.