A heat exchanger

Abstract

The utility model relates to the technical field of heat exchange, and in particular to a heat exchanger with long service life, easy mobility, high heat exchange efficiency, convenient use and strong practicality; comprising a base, a square tube bracket and a shell, the square tube bracket is fixedly mounted on the upper end of the base, the shell is fixedly mounted on the square tube bracket, a chamber is arranged inside the shell, and an air inlet and an air outlet connected to the chamber are respectively arranged at the left and right ends of the shell; further comprising an inlet and outlet mechanism, a heat exchange mechanism and two groups of tube sheets, the two groups of tube sheets are respectively fixedly mounted on the front and rear parts of the shell chamber, the front and rear parts of the heat exchange mechanism are respectively fixedly mounted on the two groups of tube sheets, the inlet and outlet mechanism is mounted on the shell, the inlet and outlet mechanism is connected to the heat exchange mechanism, and the inlet and outlet mechanism is used to transport water to and discharge water from the heat exchange mechanism; the heat exchange mechanism comprises a plurality of groups of fin tubes.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a heat exchanger. Background Art

[0002] A heat exchanger is a device used for heat exchange, which is widely used in many fields such as chemical industry, pharmaceutical industry, food industry and flue gas heat recovery. Existing heat exchangers are basically composed of heat exchange tubes and shells. The heat exchange tubes are installed in the shell. When exchanging heat, the medium to be heated is added to the heat exchange tubes, and the medium providing heat is added to the shell. The heated medium is in contact with the medium providing heat in the shell through the tube wall of the heat exchange tube, thereby heating the medium in the heat exchange tube. However, the heat exchangers in the prior art generally have the following problems during use: the two media can only exchange heat through the tube wall of the heat exchange tube, and the heat exchange efficiency is low, the heat exchange is insufficient, and it is inconvenient to use. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a heat exchanger with long service life, high heat exchange efficiency, convenient use and strong practicality.

[0004] The utility model heat exchanger comprises a base, a square tube bracket and a shell, the square tube bracket is fixedly mounted on the upper end of the base, the shell is fixedly mounted on the square tube bracket, a chamber is arranged inside the shell, and an air inlet and an air outlet connected to the chamber are respectively arranged at the left and right ends of the shell; it also comprises an inlet and outlet mechanism, a heat exchanging mechanism and two groups of tube sheets, the two groups of tube sheets are respectively fixedly mounted on the front and rear parts of the shell chamber, the front and rear parts of the heat exchanging mechanism are respectively fixedly mounted on the two groups of tube sheets, the inlet and outlet mechanism is mounted on the shell, the inlet and outlet mechanism is connected to the heat exchanging mechanism, and the inlet and outlet mechanism is used to transport water to and discharge water from the heat exchanging mechanism; the heat exchanging mechanism comprises a plurality of groups of fin tubes, the front and rear parts of the plurality of groups of fin tubes are respectively fixedly mounted on the two groups of tube sheets, the plurality of groups of fin tubes are connected to each other, the plurality of groups of fin tubes are all provided with fins, and the material of the plurality of groups of fin tubes is 304 stainless steel; when it is necessary to exchange the flue gas When it is hot, the external flue gas is discharged into the chamber of the shell through the air inlet on the left side of the shell, and then cold water is transported into the multiple groups of finned tubes through the air inlet and outlet mechanism. Then the flue gas exchanges heat with the water in the multiple groups of finned tubes through the tube walls of the multiple groups of finned tubes and the fins on the multiple groups of finned tubes, thereby heating the water in the multiple groups of finned tubes to increase the temperature of the water. The heated water is discharged through the air inlet and outlet mechanism and then collected for use. Then the flue gas is discharged through the air outlet on the right side of the shell and then continues to be processed by other external equipment. Since the material of the finned tube is 304 stainless steel, the rust of the finned tube is avoided, and the service life of the finned tube is increased. In addition, the finned tube is used as the heat exchange tube. Since the finned tube is provided with fins, compared with the traditional heat exchange tube, the contact area with the flue gas is increased by adding fins, which greatly increases the heat transfer effect and heat transfer efficiency. It is easy to use and has high practicality.

[0005] Preferably, it further comprises a plurality of groups of elbows, wherein the plurality of groups of finned tubes are connected in series via the plurality of groups of elbows, the plurality of groups of elbows are all located in the chamber of the shell, a thermal insulation layer is provided on the plurality of groups of elbows, and the plurality of groups of finned tubes are arranged and distributed in a triangular manner on the tube sheet; the plurality of groups of finned tubes are connected in series via the plurality of groups of elbows, so that the connection between the plurality of groups of finned tubes is convenient, and by providing a thermal insulation layer on the plurality of groups of elbows, the heat loss of water in the elbows is reduced, thereby improving convenience; at the same time, since the plurality of groups of finned tubes are arranged and distributed in a triangular manner on the tube sheet, the wind resistance of the plurality of groups of finned tubes to the smoke in the chamber of the shell on the same cross section is reduced, thereby improving service life.

[0006] Preferably, the height of the fins on the fin tube is 15 mm, the thickness of the fins is 0.8 mm, and the fin pitch is 6 mm; the upper base tube diameter of the fin tube is 32 mm, the wall thickness is 2 mm, and the length is 2000 mm; after thermal calculations, under the conditions of meeting the heating of 5,000 square meters and known working conditions, the fin height, fin thickness and fin pitch are set to the above dimensions, and the diameter, wall thickness and length of the fin tube are specified to the above dimensions, which can improve the heat exchange efficiency while meeting the heat exchange requirements.

[0007] Preferably, an air intake funnel is provided at the left end of the shell, and the left and right ends of the air intake funnel are both square, the area of ​​the left end of the air intake funnel is smaller than the area of ​​the right end of the air intake funnel, an air inlet is provided on the left end of the air intake funnel, and a square flange is provided on the air inlet of the air intake funnel; the thickness of the square flange is preferably 10 mm. By providing a square on the left and right ends of the air intake funnel, and the area of ​​the left end of the air intake funnel is smaller than the area of ​​the right end of the air intake funnel, the overall wind resistance of the equipment is reduced and the stability is improved. By providing a square flange at the left end of the air intake funnel, the connection between the external exhaust duct and the air intake funnel is facilitated, and the stability of the connection is improved.

[0008] Preferably, an exhaust funnel is provided at the right end of the shell, an exhaust port is provided at the right end of the exhaust funnel, the right end of the exhaust funnel is circular, and the left end of the exhaust funnel is square; through the above arrangement, the wind resistance on the right part of the shell is reduced and the stability is improved.

[0009] Preferably, the water inlet and outlet mechanism comprises a drain pipe, a water inlet pipe, a drain flange and a water inlet flange, the drain pipe is fixedly installed on the upper part of the shell chamber, the drain pipe is connected to the output end of the heat exchange mechanism, the water inlet pipe is installed in the lower part of the shell chamber, the water inlet pipe is connected to the input end of the heat exchange mechanism, the drain flange and the water inlet flange are fixedly installed on the drain pipe and the water inlet pipe respectively, the drain flange is located at the upper right of the water inlet flange, the drain flange and the water inlet flange are both located on the front side of the shell, the drain pipe is connected to an exhaust ball valve, the water inlet pipe is provided with a drain ball valve, and the exhaust ball valve and the drain ball valve are both located at on the outside of the shell; when conveying water into the multiple groups of fin tubes, the external water supply mechanism is connected to the water inlet flange, so that the external cold water enters the multiple groups of fin tubes through the water inlet flange and the water inlet pipe, and then the water in the multiple groups of fin tubes exchanges heat with the flue gas in the shell chamber, so that the water in the multiple groups of fin tubes is heated, and then the heated water is discharged through the drain pipe and the drain flange and then passed into the external heating pipe for use as heating; the circulation and transportation of water is convenient, and by arranging the drain ball valve on the water inlet pipe, the discharge of water in the multiple groups of fin tubes is convenient, thereby improving convenience.

[0010] Preferably, it also includes baffle A, baffle B, lifting mechanism A and lifting mechanism B, baffle A and baffle B are respectively installed on lifting mechanism A and lifting mechanism B, baffle A is located above baffle B, baffle A and baffle B are both located at the left end of multiple groups of fin tubes, lifting mechanism A and lifting mechanism B are used to lift baffle A and baffle B respectively, baffle A and baffle B are both located in the chamber of the shell, baffle A and baffle B are both installed in the chamber of the shell to slide up and down; when multiple groups of fin tubes are needed to work for heating in winter, baffle A and baffle B are moved away from each other by lifting mechanism A and lifting mechanism B, and baffle A and baffle B are moved to the top and bottom of the multiple groups of fin tubes respectively, so that the flue gas can Blow directly onto the multiple groups of fin tubes, so that the water in the multiple groups of fin tubes can exchange heat with the flue gas; in summer, when the multiple groups of fin tubes are not needed to work, the lifting mechanism A and the lifting mechanism B make the baffle A and the baffle B approach each other until the baffle A and the baffle B move to the left side of the multiple groups of fin tubes, and the baffle A and the baffle B block the flue gas, thereby preventing the flue gas from blowing directly onto the multiple groups of fin tubes, so that the flue gas enters the chamber of the shell through the upper and lower sides of the baffle A and the baffle B, and then the flue gas is discharged through the exhaust port on the right side of the shell; when the multiple groups of fin tubes are not needed to work, the baffle A and the baffle B can be used to reduce the direct contact between the flue gas and the multiple groups of fin tubes, thereby increasing the service life of the multiple groups of fin tubes.

[0011] Preferably, the lifting mechanism A includes a screw A, the lower end of which is rotatably mounted on the baffle A, the upper part of which is screwed to the square tube bracket, and a handwheel is provided at the upper end of the screw A; the lifting mechanism B includes a screw B, a lifting motor and a control electric box, the upper part of which is fixedly mounted on the baffle B, the screw B is connected to the lower part of the square tube bracket for sliding up and down, the lifting motor is used to drive the screw B to move up and down, and the control electric box is used to control the lifting motor; when adjusting the height of the baffle A, the staff turns the handwheel to rotate the screw A. , and then the height of the baffle A can be adjusted; a nut is provided on the square tube bracket, and the nut is rotatably installed on the lower part of the screw B on the square tube bracket and is screwed with the nut, a gear ring is provided on the outer wall of the nut, and the lifting motor is fixedly installed at the lower part of the square tube bracket, and a driving gear is provided at the output end of the lifting motor, and the driving gear is meshed with the gear ring; when controlling the lifting and lowering of the screw B, the lifting motor is turned on, so that the driving gear drives the gear ring to rotate, and then the nut rotates, and the rotating nut controls the lifting and lowering of the screw B; it is convenient to adjust the height of the screws A and B.

[0012] Preferably, it also includes multiple groups of lifting ears and drain valves. The upper end of the square tube bracket is provided with multiple groups of lifting ears, and the lower end of the shell is provided with a drain valve connected to the chamber. By providing the lifting ears, the overall lifting of the square tube bracket is facilitated, and the movement of the square tube bracket is facilitated. By providing the drain valve, the discharge of dust in the shell chamber is facilitated. When it is necessary to flush the dust in the shell chamber, water is added into the shell chamber to flush the dust on the inner wall of the shell chamber, and then the drain valve is opened to discharge the dust and water together; the convenience is improved.

[0013] Preferably, it also includes a sealing door, and the air inlet funnel is provided with a rectangular manhole connected to the chamber, and the sealing door is installed on the outside of the rectangular manhole; when it is necessary to inspect or maintain the equipment in the shell chamber, the sealing door is opened and the staff can enter the shell chamber to inspect or maintain the equipment, thereby improving safety and convenience.

[0014] Compared with the prior art, the utility model has the following beneficial effects: long service life, high heat exchange efficiency, convenient use and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a main structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the fin tubes distributed on the tube sheet;

[0017] Figure 3 It is a structural schematic diagram of the fin tube in the utility model when it is working;

[0018] Figure 4 It is a structural schematic diagram of the fin tube in the utility model when not working;

[0019] Figure 5 It is a schematic diagram of the structure of elbow, shell and fin tube;

[0020] Figure 6 It is a schematic diagram of the structure of the finned tube;

[0021] Figure 7 It is a schematic diagram of the structure of a square flange;

[0022] Figure 8 It is a first axonometric structural schematic diagram of the utility model;

[0023] Fig. 9 It is a second axonometric structural schematic diagram of the utility model;

[0024] Fig.10 It is a third axonometric structural schematic diagram of the utility model.

[0025] Markings in the attached figure: 1. base; 2. square tube bracket; 3. shell; 4. finned tube; 5. tube sheet; 6. air inlet funnel; 7. square flange; 8. exhaust funnel; 9. elbow; 10. drain pipe; 11. water inlet pipe; 12. drain flange; 13. water inlet flange; 14. baffle A; 15. baffle B; 16. screw A; 17. screw B; 18. lifting ear; 19. drain valve; 20. sealing door. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0027] Example

[0028] like Figures 1 to 10 The heat exchanger of the utility model comprises a base 1, a square tube bracket 2, a shell 3, an inlet and outlet mechanism, a heat exchange mechanism and two groups of tube sheets 5. The square tube bracket 2 is fixedly mounted on the upper end of the base 1, and the shell 3 is fixedly mounted on the square tube bracket 2. A chamber is arranged inside the shell 3, and an air inlet and an air outlet communicating with the chamber are respectively arranged at the left and right ends of the shell 3. The two groups of tube sheets 5 are respectively fixedly mounted on the front and rear parts of the chamber of the shell 3, and the front and rear parts of the heat exchange mechanism are respectively fixedly mounted on the two groups of tube sheets 5. The inlet and outlet mechanism is mounted on the shell 3, and the inlet and outlet mechanism is connected with the heat exchange mechanism. The inlet and outlet mechanism is used to transport water to and discharge water from the heat exchange mechanism; the heat exchange mechanism comprises multiple groups of fin tubes 4, and the front and rear parts of the multiple groups of fin tubes 4 are respectively fixedly mounted on the two groups of tube sheets 5. The multiple groups of fin tubes 4 are connected to each other, and fins are arranged on the multiple groups of fin tubes 4. The material of the multiple groups of fin tubes 4 is 304 stainless steel; when it is necessary to treat the flue gas During heat exchange, the external flue gas is discharged into the chamber of the shell 3 through the air inlet on the left side of the shell 3, and then cold water is transported into the multiple groups of finned tubes 4 through the water inlet and outlet mechanism. Then, the flue gas exchanges heat with the water in the multiple groups of finned tubes 4 through the tube walls of the multiple groups of finned tubes 4 and the fins on the multiple groups of finned tubes 4, thereby heating the water in the multiple groups of finned tubes 4 to increase the temperature of the water. The heated water is discharged through the water inlet and outlet mechanism and then collected for use. Then, the flue gas is discharged through the air outlet on the right side of the shell 3 and then continues to be processed by other external equipment. Since the material of the finned tube 4 is 304 stainless steel, the rusting of the finned tube 4 is delayed, and the service life of the finned tube 4 is increased. In addition, the finned tube 4 is used as the heat exchange tube. Since the finned tube 4 is provided with fins, compared with the traditional heat exchange tube, the contact area with the flue gas is increased by adding fins, and the heat transfer effect and heat transfer efficiency are increased. It is easy to use and has high practicality.

[0029] like Figure 2 and Figure 3, further comprising a plurality of groups of elbows 9, wherein the plurality of groups of finned tubes 4 are connected in series through the plurality of groups of elbows 9, the plurality of groups of elbows 9 are all located in the chamber of the shell 3, the plurality of groups of elbows 9 are all provided with a heat-insulating layer, and the plurality of groups of finned tubes 4 are arranged and distributed in a triangular manner on the tube sheet 5; the plurality of groups of finned tubes 4 are connected in series through the plurality of groups of elbows 9, so as to facilitate the connection between the plurality of groups of finned tubes 4, and by providing a heat-insulating layer on the plurality of groups of elbows 9, the heat loss of water in the elbows 9 is reduced, and the convenience is improved. At the same time, since the plurality of groups of finned tubes 4 are distributed and arranged in a triangular manner on the tube sheet 5, the wind resistance of the plurality of groups of finned tubes 4 to the smoke in the chamber of the shell 3 on the same cross section is reduced, and the service life is improved.

[0030] like Figure 6 The height of the fin on the fin tube 4 is 15mm, the thickness of the fin is 0.8mm, and the fin pitch is 6mm; the diameter of the fin tube 4 is 32mm, the wall thickness is 2mm, and the length is 2000mm; after thermal calculation, under the conditions of meeting the heating of 5,000 square meters and known working conditions, the fin height, fin thickness and fin pitch are set to the above dimensions, and the diameter, closure and length of the fin tube are specified to the above dimensions, which can improve the heat exchange efficiency while meeting the heat exchange requirements.

[0031] like Figure 1 , Figure 7 and Figure 8 An air intake funnel 6 is provided at the left end of the shell 3. The left and right ends of the air intake funnel 6 are both square. The area of ​​the left end of the air intake funnel 6 is smaller than that of the right end of the air intake funnel 6. An air inlet is provided on the left end of the air intake funnel 6. A square flange 7 is provided on the air inlet of the air intake funnel 6. The thickness of the square flange 7 is preferably 10 mm. By providing a square shape on the left and right ends of the air intake funnel 6, and the area of ​​the left end of the air intake funnel 6 is smaller than that of the right end of the air intake funnel 6, the overall wind resistance of the equipment is reduced and the stability is improved. By providing a square flange 7 at the left end of the air intake funnel 6, the connection between the external exhaust duct and the air intake funnel 6 is facilitated, and the stability of the connection is improved.

[0032] like Figure 8 and Fig. 9 An exhaust funnel 8 is provided at the right end of the shell 3, an exhaust port is provided at the right end of the exhaust funnel 8, the right end of the exhaust funnel 8 is circular, and the left end of the exhaust funnel 8 is square; through the above arrangement, the wind resistance of the right part of the shell 3 is reduced and the stability is improved.

[0033] like Figure 3 and Figure 5The water inlet and outlet mechanism includes a drain pipe 10, a water inlet pipe 11, a drain flange 12 and a water inlet flange 13. The drain pipe 10 is fixedly installed at the upper part of the chamber of the shell 3, and the output end of the heat exchange mechanism of the drain pipe 10 is connected. The water inlet pipe 11 is installed at the lower part of the chamber of the shell 3. The water inlet pipe 11 is connected to the input end of the heat exchange mechanism. The drain flange 12 and the water inlet flange 13 are fixedly installed on the drain pipe 10 and the water inlet pipe 11 respectively. The drain flange 12 is located at the upper right of the water inlet flange 13. The drain flange 12 and the water inlet flange 13 are both located on the front side of the shell 3. An exhaust ball valve is connected to the drain pipe 10, and a drain ball valve is provided on the water inlet pipe 11. The exhaust ball valve and the drain ball valve are both located on the outside of the shell 3; when water is transported into the multiple groups of fin tubes 4, the external water supply mechanism is connected to the water inlet flange 13, so that the external cold water enters the multiple groups of fin tubes 4 through the water inlet flange 13 and the water inlet pipe 11, and then the water in the multiple groups of fin tubes 4 is heat-exchanged with the flue gas in the chamber of the shell 3, so that the water in the multiple groups of fin tubes 4 is heated, and then the heated water is discharged through the drain pipe 10 and the drain flange 12 and then passed into the external heating pipe for use as heating; the circulation and transportation of water is facilitated, and by arranging the drain ball valve on the water inlet pipe 11, the discharge of water in the multiple groups of fin tubes 4 is facilitated, thereby improving convenience.

[0034] like Figure 3 and Figure 4 , baffle A14 and baffle B15 are respectively installed on lifting mechanism A and lifting mechanism B, baffle A14 is located above baffle B15, baffle A14 and baffle B15 are both located at the left end of the multiple groups of fin tubes 4, lifting mechanism A and lifting mechanism B are used to lift baffle A14 and baffle B15 respectively, baffle A14 and baffle B15 are both located in the chamber of shell 3, baffle A14 and baffle B15 are both installed in the chamber of shell 3 for sliding up and down; when multiple groups of fin tubes 4 are needed to work for heating in winter, baffle A14 and baffle B15 are moved away from each other by lifting mechanism A and lifting mechanism B, so that baffle A14 and baffle B15 are moved to the top and bottom of the multiple groups of fin tubes 4 respectively, so that the smoke can be directly blown to the multiple groups of fin tubes 4 On the upper side, the water in the multiple groups of fin tubes 4 is heat exchanged with the flue gas; in summer, when the multiple groups of fin tubes 4 are not needed to work, the lifting mechanism A and the lifting mechanism B make the baffle A14 and the baffle B15 approach each other until the baffle A14 and the baffle B15 move to the left side of the multiple groups of fin tubes 4, and the baffle A14 and the baffle B15 block the flue gas, thereby preventing the flue gas from directly blowing onto the multiple groups of fin tubes 4, so that the flue gas enters the chamber of the shell 3 through the upper and lower sides of the baffle A14 and the baffle B15, and then the flue gas is discharged through the exhaust port on the right side of the shell 3; when the multiple groups of fin tubes 4 are not needed to work, the baffle A14 and the baffle B15 can be used to reduce the direct contact between the flue gas and the multiple groups of fin tubes 4, thereby improving the service life of the multiple groups of fin tubes 4.

[0035] Continue to refer to Figure 3 and Figure 4 The lifting mechanism A includes a screw A16, the lower end of which is rotatably mounted on the baffle A14, the upper part of which is screwed to the square tube bracket 2, and a hand wheel is arranged on the upper end of the screw A16; the lifting mechanism B includes a screw B17, a lifting motor and a control box, the upper part of which is fixedly mounted on the baffle B15, the screw B17 is connected to the lower part of the square tube bracket 2 for sliding up and down, the lifting motor is used to drive the screw B17 to move up and down, and the control box is used to control the lifting motor; when adjusting the height of the baffle A14, the staff rotates the hand wheel to make the screw A17 move up and down. 6 is rotated, and then the height of the baffle A14 can be adjusted; a nut is provided on the square tube bracket 2, and the nut is rotatably installed on the lower part of the screw B17 on the square tube bracket 2 and is screwed with the nut, a gear ring is provided on the outer wall of the nut, and the lifting motor is fixedly installed at the lower part of the square tube bracket 2, and a driving gear is provided at the output end of the lifting motor, and the driving gear is meshed with the gear ring; when controlling the lifting and lowering of the screw B17, the lifting motor is turned on, so that the driving gear drives the gear ring to rotate, and then the nut rotates, and the rotating nut controls the lifting and lowering of the screw B17; it is convenient to adjust the height of the screws A16 and B17.

[0036] like Figure 1 A plurality of lifting ears 18 are provided at the upper end of the square tube support 2, and a drain valve 19 connected to the chamber is provided at the lower end of the shell 3; by providing the lifting ears 18, the overall lifting of the square tube support 2 is facilitated, and the movement of the square tube support 2 is facilitated; by providing the drain valve 19, the discharge of dust in the chamber of the shell 3 is facilitated. When it is necessary to flush the dust in the chamber of the shell 3, water is added into the chamber of the shell 3 to flush the dust on the inner wall of the chamber of the shell 3, and then the drain valve 19 is opened to discharge the dust and water together; the convenience is improved.

[0037] like Figure 1 A rectangular manhole connected to the chamber is provided on the air inlet funnel 6, and a sealing door 20 is installed on the outside of the rectangular manhole; when it is necessary to inspect or maintain the equipment in the chamber of the shell 3, the sealing door 20 is opened, and the staff can enter the chamber of the shell 3 to inspect or maintain the equipment, thereby improving convenience.

[0038] The flue gas volume in the known working condition is 47900Nm 3 / h, inlet flue gas temperature: 90℃, outlet flue gas temperature: 64.5℃, inlet water temperature: 40℃, outlet water temperature: 62.14℃, average flue gas velocity: 10.89m / s, flue gas side resistance: 825.52pa. After thermal calculation, the specifications of fin tube 4 are 32mm in diameter, 2mm in thickness and 2000 in length. The specifications of the fins are; 0.8mm in thickness, 6mm in spacing and 15mm in height. The above-mentioned fin tubes can not only meet the heat exchange requirements, but also maximize the heat exchange efficiency.

[0039] Known operating conditions, heat exchange area flue gas side: 438.60m 2 Heat exchange area water side: 46.39m 2 After thermal calculation, the arrangement of the finned tubes 4 on the tube sheet 5 is designed as follows: transverse tube pitch: 85 mm, longitudinal tube pitch: 74 mm, transverse average tube row number: 16, longitudinal tube row number: 16, total tube number: 256. The above arrangement can meet the needs and maximize the heat exchange efficiency.

[0040] The fin tubes 4, exhaust funnel 8, drain flange 12, water inlet flange 13, lifting lugs 18, drain valve 19 and sealing door 20 on the heat exchanger of the utility model are all purchased on the market. The technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative efforts.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A heat exchanger, comprising a base (1), a square tube support (2) and a shell (3), wherein the square tube support (2) is fixedly mounted on the upper end of the base (1), the shell (3) is fixedly mounted on the square tube support (2), a chamber is arranged inside the shell (3), and an air inlet and an air outlet communicating with the chamber are arranged at the left and right ends of the shell (3); characterized in that: The invention also comprises an inlet and outlet mechanism, a heat exchange mechanism and two groups of tube sheets (5), the two groups of tube sheets (5) are respectively fixedly mounted on the front and rear parts of the chamber of the shell (3), the front and rear parts of the heat exchange mechanism are respectively fixedly mounted on the two groups of tube sheets (5), the inlet and outlet mechanism is mounted on the shell (3), the inlet and outlet mechanism is connected to the heat exchange mechanism, and the inlet and outlet mechanism is used to transport water to and discharge water from the heat exchange mechanism; the heat exchange mechanism comprises a plurality of groups of fin tubes (4), the front and rear parts of the plurality of groups of fin tubes (4) are respectively fixedly mounted on the two groups of tube sheets (5), the plurality of groups of fin tubes (4) are interconnected, the plurality of groups of fin tubes (4) are all provided with fins, and the plurality of groups of fin tubes (4) are all made of 304 stainless steel.

2. A heat exchanger according to claim 1, characterized in that: It also includes a plurality of groups of elbows (9), wherein the plurality of groups of finned tubes (4) are connected in series via the plurality of groups of elbows (9), the plurality of groups of elbows (9) are all located in the chamber of the shell (3), a thermal insulation layer is provided on the plurality of groups of elbows (9), and the plurality of groups of finned tubes (4) are arranged and distributed in a triangular manner on the tube sheet (5).

3. A heat exchanger according to claim 2, characterized in that: The height of the fins on the fin tube (4) is 15 mm, the thickness of the fins is 0.85 mm, and the fin pitch is 6 mm; the diameter of the fin tube (4) is 32 mm, the wall thickness is 2 mm, and the length is 2000 mm.

4. A heat exchanger according to claim 1, characterized in that: The water inlet and outlet mechanism comprises a water inlet pipe (11), a water inlet pipe (11), a water inlet flange (12) and a water inlet flange (13); the water inlet pipe (10) is fixedly mounted on the upper part of the chamber of the shell (3); the water inlet pipe (11) is connected to the output end of the heat exchange mechanism; the water inlet pipe (11) is mounted on the lower part of the chamber of the shell (3); the water inlet pipe (11) is connected to the input end of the heat exchange mechanism; the water inlet flange (12) and the water inlet flange (13) are fixedly mounted on the water inlet pipe (10) and the water inlet pipe (11), respectively; the water inlet flange (12) is located at the upper right of the water inlet flange (13); the water inlet flange (12) and the water inlet flange (13) are both located at the front side of the shell (3); the water inlet pipe (10) is connected to an exhaust ball valve; the water inlet pipe (11) is provided with a drain ball valve; the exhaust ball valve and the drain ball valve are both located outside the shell (3).

5. A heat exchanger according to claim 1, characterized in that: An air intake funnel (6) is arranged at the left end of the shell (3); the left and right ends of the air intake funnel (6) are both square; the area of ​​the left end of the air intake funnel (6) is smaller than the area of ​​the right end of the air intake funnel (6); an air inlet is arranged at the left end of the air intake funnel (6); and a square flange (7) is arranged at the air inlet of the air intake funnel (6).

6. A heat exchanger according to claim 1, characterized in that: An exhaust funnel (8) is provided at the right end of the shell (3), and an exhaust port is provided at the right end of the exhaust funnel (8); the right end of the exhaust funnel (8) is circular, and the left end of the exhaust funnel (8) is square.

7. A heat exchanger according to claim 1, characterized in that: The invention also comprises a baffle A (14), a baffle B (15), a lifting mechanism A and a lifting mechanism B. The baffle A (14) and the baffle B (15) are respectively mounted on the lifting mechanism A and the lifting mechanism B. The baffle A (14) is located above the baffle B (15). The baffle A (14) and the baffle B (15) are both located at the left end of the plurality of groups of fin tubes (4). The lifting mechanism A and the lifting mechanism B are respectively used to lift and lower the baffle A (14) and the baffle B (15). The baffle A (14) and the baffle B (15) are both located in the chamber of the shell (3). The baffle A (14) and the baffle B (15) are both mounted in the chamber of the shell (3) so as to slide up and down.

8. A heat exchanger according to claim 7, characterized in that: The lifting mechanism A comprises a screw A (16), the lower end of which is rotatably mounted on the baffle A (14), the upper part of which is screwed to the square tube bracket (2), and the upper end of which is provided with a hand wheel; the lifting mechanism B comprises a screw B (17), a lifting motor and a control box, the upper part of which is fixedly mounted on the baffle B (15), the screw B (17) is slidably connected to the lower part of the square tube bracket (2), the lifting motor is used to drive the screw B (17) to move up and down, and the control box is used to control the lifting motor.

9. A heat exchanger according to claim 1, characterized in that: It also includes a plurality of lifting ears (18) and a drain valve (19). The upper end of the square tube support (2) is provided with a plurality of lifting ears (18), and the lower end of the shell (3) is provided with a drain valve (19) connected to the chamber.

10. A heat exchanger according to claim 5, characterized in that: It also comprises a sealing door (20); the air inlet funnel (6) is provided with a rectangular manhole communicating with the chamber; the sealing door (20) is installed on the outside of the rectangular manhole.

Images