Combined waste heat recovery conversion heat exchanger

Abstract

The present invention relates to a combined waste heat recovery and conversion heat exchanger, which comprises a cryogenic cooler and a cooler connected by a flange and a pipeline; the cryogenic cooler includes a first folded plate and a panel; the first folded plate is provided with an air inlet and an air inlet head is installed; a first core body is arranged between the first folded plate and the panel; a layer of wire mesh is horizontally arranged between the first core body and the panel; a first head and a second head are respectively arranged on the upper and lower sides of the first core body; the first head is provided with a cooling water inlet and a cooling water outlet; the panel comprises a first sealing plate, a second sealing plate and a third sealing plate which are integrally formed; an air outlet is formed in the second sealing plate and an air outlet head is installed; the third sealing plate is installed with a first flange group; the cooler includes a second core body; the second core body is a cuboid; the second core body includes six faces, and three pairs of opposite faces are heat exchange channels; a second folded plate is arranged in front of each heat exchange channel. The present invention adopts a combined scheme, which reduces energy consumption.

Description

Technical Field

[0001] The present invention relates to the field of heat exchangers, and particularly to a combined waste heat recovery and conversion heat exchanger. Background Art

[0002] A device for transferring heat energy between fluids at different temperatures is called a cooler, simply referred to as a heat exchanger. In a heat exchanger, there must be at least two fluids with different temperatures. One fluid has a higher temperature and releases heat, while the other fluid has a lower temperature and absorbs heat. Heat exchangers are general process equipment in many industrial production departments, especially more widely used in petroleum and chemical production. In chemical plants, heat exchangers can be used as heaters, coolers, condensers, evaporators, reboilers, etc. With the continuous development of China's industry, the requirements for energy utilization, development, and conservation are constantly increasing, so the requirements for heat exchangers are also becoming increasingly stringent.

[0003] Coolers with secondary surfaces were first adopted in the aviation industry in the 1930s. Due to their high efficiency, light weight, and structural compactness, they have attracted great attention from researchers and designers. In the 1940s, finned plate coolers made of aluminum alloy, titanium alloy, and other materials were used as regenerators in steam turbine equipment. Since the early 1950s, it has been used in various fields of cryogenic equipment and cryogenic technology and is considered the most promising heat exchange equipment. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention discloses a combined waste heat recovery and conversion heat exchanger.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A combined waste heat recovery and conversion heat exchanger includes a cryogenic cooler and a cooler connected by a flange and a pipeline;

[0007] The cryogenic cooler includes a first folded plate and a panel; the first folded plate is provided with an air inlet and an air inlet head is installed; a first core body is arranged between the first folded plate and the panel; a layer of wire mesh is horizontally arranged between the first core body and the panel; a sealing plate is covered on one side of the wire mesh; flat strips are arranged on the other side of the wire mesh; first and second heads are respectively arranged on the upper and lower sides of the first core body; the first head is provided with a cooling water inlet and a cooling water outlet; the panel includes a first sealing plate, a second sealing plate, and a third sealing plate integrally formed; the cross-sections of the first sealing plate and the second sealing plate are both rectangular; the cross-section of the third sealing plate is arc-shaped; the connection angle between the first sealing plate and the second sealing plate is 135°; the second sealing plate and the third sealing plate are welded; an air outlet is opened on the second sealing plate and an air outlet head is installed; the third sealing plate is installed with a first flange group;

[0008] The cooler includes a second core body; the second core body is a straight quadrangular prism; the second core body includes six faces, and three pairs of opposite faces are heat exchange channels; a second folding plate is provided in front of each heat exchange channel; the second folding plate is provided with an inlet and an air header is installed; the top and bottom of the cooler are both covers;

[0009] The shape of the first folding plate is a quadrangular frustum; the first folding plate includes a first top surface A2B2C2D2, a first bottom surface A1B1C1D1 and the edges of the first folding plate; the first bottom surface A1B1C1D1 includes a first base edge A1B1, a second base edge A1D1, a third base edge C1D1 and a fourth base edge B1C1; the plane α and the plane β cut off the edges of the first folding plate; both the plane α and the plane β are triangles, and the shapes of the plane α and the plane β are different; the edges of the first folding plate include a first side edge A1A2, a second side edge B1B2, a third side edge C1C2 and a fourth side edge D1D2; l A1A2 =l B1B2 ; the first bottom surface A1B1C1D1 is a rectangle, l A1B1 =l C1D1 and the length of the first base edge A1B1 is the same as the length of the long side of the first core body; l A1D1 =l B1C1 and the length of the second base edge A1D1 is the same as the length of the short side of the first core body; the first top surface A2B2C2D2 is provided with a circular hole.

[0010] A further technical feature thereof is that a plurality of air flow distribution plates are installed in the air inlet header.

[0011] A further technical feature thereof is that both the first core body and the second core body include a plurality of mutually parallel partition groups; a first channel is provided between the partition groups; a second channel is provided between two adjacent partition groups; outer fins are installed in the second channel; inner fins are installed in the first channel.

[0012] A further technical feature thereof is that a first seal is provided at the end of the outer fin of the first core body; a protruding portion is provided in the middle of one end of the first seal; both sides of the protruding portion are smooth planes; the shape of the protruding portion is a triangular prism; a continuous transition is formed between the protruding portion and its two side surfaces; the protruding portion abuts against the end of the outer fin; a second seal is provided at the end of the inner fin of the first core body; the second seal includes an upper part and a lower part which are integrally formed; the upper part and the lower part are superposed; the shape of the upper part is a triangular prism; the upper part abuts against the end of the inner fin; the shape of the lower part is a cuboid.

[0013] Its further technical features are as follows: a third seal is provided at the end of the outer fin of the second core body; a fourth seal is provided at the end of the inner fin of the second core body; the end interface forms of both the third seal and the fourth seal are of type A.

[0014] Its further technical features are as follows: cover plates are respectively provided on the left and right sides of the first core body; brackets are installed on the cover plates.

[0015] Its further technical features are as follows: second flange groups are installed at both the cooling water inlet and the cooling water outlet; the second flange group includes a flange and a nozzle; the configuration form of the nozzle and the first head is an inclined nozzle.

[0016] Its further technical features are as follows: the shape of the second folding plate is a regular square frustum; the second folding plate includes a second top surface A4B4C4D4, a second bottom surface A3B3C3D3 and the edges of the second folding plate; the second bottom surface A3B3C3D3 includes a fifth base A3B3, a sixth base A3D3, a seventh base C3D3 and an eighth base B3C3; the edges of the second folding plate are cut off by the plane γ; the plane γ is a triangle; the edges include a fifth side edge A3A4, a sixth side edge B3B4, a seventh side edge C3C4 and an eighth side edge D3D4; l A3A4 =l B3B4 =l C3C4 =l D3D4 ; the second bottom surface A3B3C3D3 is a rectangle, l A3B3 =l C3D3 , and the length of the fifth base A3B3 is the same as the length of the long side of the second core body; l A3D3 =l B3C3 , and the length of the sixth base A3D3 is the same as the length of the short side of the second core body; a circular hole is opened on the second top surface A4B4C4D4.

[0017] Its further technical features are as follows: foot supports are provided on the cover at the bottom of the cooler.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention effectively reduces energy consumption and actively implements and responds to the national and industrial energy conservation and emission reduction goals and requirements.

[0020] The present invention effectively recovers secondary steam, avoids direct discharge of secondary steam into the atmosphere, and reduces environmental heat pollution.

[0021] It occupies a small area and has a high space utilization rate. The combined solution integrates the cryogenic cooler and the cooler, greatly improving the space utilization rate.

[0022] The equipment installation has high reliability. The modular solution reduces and eliminates the possibility of low installation accuracy caused by pipeline construction errors, steel structure construction errors, civil engineering foundation errors, etc. from the source.

[0023] It improves production efficiency and reduces the manufacturing and installation costs of production equipment. Through integration and standardization, the manufacturing costs of components can be reduced. The high integration degree of the equipment reduces the number of pipe fittings, shortens the pipe length, and can also reduce the number of steel structures and the corresponding civil engineering costs of the supports by sharing the supports. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a cryogenic cooler.

[0025] Figure 2 It is a schematic diagram of the first folding plate.

[0026] Figure 3 It is a schematic diagram of the panel.

[0027] Figure 4 It is a front view of the first core body.

[0028] Figure 5 It is a side view of the first core body.

[0029] Figure 6 It is Figure 4 an enlarged schematic diagram of part A in

[0030] Figure 7 It is Figure 5 an enlarged schematic diagram of part B in

[0031] Figure 8 It is a schematic structural diagram of a cooler.

[0032] Figure 9 It is a schematic diagram of the second folding plate.

[0033] Figure 10 It is a front view of the second core body.

[0034] Figure 11 It is a side view of the second core body.

[0035] Figure 12 It is Figure 10 an enlarged schematic diagram of part C in

[0036] Figure 13 It is Figure 11 an enlarged schematic diagram of part D in

[0037] In the figure: 1. Cryogenic cooler; 11. Air inlet head; 12. First folded plate; 121. First core; 13. Panel; 14. Wire mesh; 15. First head; 16. Second head; 17. Cooling water inlet; 18. Cooling water outlet; 19. Air outlet head; 2. Cooler; 21. Second core; 22. Second folded plate; 23. Cover; 24. Foot; 31. First sealing plate; 32. Second sealing plate; 33. Third sealing plate; 4. Air flow distribution plate; 51. Cover plate; 52. Support; 61. Baffle group; 62. Outer fin; 63. Inner fin; 64. First seal; 65. Second seal; 66. Third seal; 67. Fourth seal; A1B1C1D1. First bottom surface; A2B2C2D2. First top surface; A1B1. First bottom edge; A1D1. Second bottom edge; C1D1. Third bottom edge; B1C1. Fourth bottom edge; A1A2. First side edge; B1B2. Second side edge; C1C2. Third side edge; D1D2. Fourth side edge; A4B4C4D4. Second top surface; A3B3C3D3. Second bottom surface; A3B3. Fifth bottom edge; A3D3. Sixth bottom edge; C3D3. Seventh bottom edge; B3C3. Eighth bottom edge; A3A4. Fifth side edge; B3B4. Sixth side edge; C3C4. Seventh side edge; D3D4. Eighth side edge. Detailed implementation mode

[0038] Regarding the foregoing and other technical contents, features and effects of the present invention, they will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only with reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0039] The following combines the accompanying drawings to illustrate the specific implementation mode of this embodiment.

[0040] Figure 1 It is a structural schematic diagram of the cryogenic cooler. Figure 8 It is a structural schematic diagram of the cooler. Combining Figure 1 and Figure 8 , a combined waste heat recovery and conversion heat exchanger includes a cryogenic cooler 1 and a cooler 2 connected by flanges and pipes.

[0041] Figure 2 It is a schematic diagram of the first folded plate. Figure 3 It is a schematic diagram of the panel. Combining Figure 2 and Figure 3, the cryogenic cooler 1 includes a first folded plate 12 and a panel 13. The first folded plate 12 is provided with an air inlet and is installed with the inlet head 11 of the orifice device. A first core body 121 is provided between the air inlet head 11 and the panel 13. A layer of wire mesh 14 is horizontally provided between the first core body 121 and the panel 13. One side of the wire mesh 14 is covered with a sealing plate. Flat strips are provided on the other side of the wire mesh 14. First heads 15 and second heads 16 are respectively provided on the upper and lower sides of the first core body 121. The first head 15 is provided with a cooling water inlet 17 and a cooling water outlet 18. Both the cooling water inlet 17 and the cooling water outlet 18 are installed with second flange groups. The second flange group includes a flange and a nozzle. The configuration form of the nozzle and the first head 15 is an inclined nozzle. The panel 13 includes a first sealing plate 31, a second sealing plate 32 and a third sealing plate 33 which are integrally formed. The structure of the panel 13 reduces the gas flow resistance to the cooler 2. The cross-sections of both the first sealing plate 31 and the second sealing plate 32 are rectangular. The cross-section of the third sealing plate 33 is arc-shaped. The connection angle between the first sealing plate 31 and the second sealing plate 32 is 135°. The second sealing plate 32 and the third sealing plate 33 are welded. The panel 13 achieves full penetration welding and reduces welding deformation, making the heat transfer more uniform, having a strong supporting ability, being more stable during operation, and having a strong corrosion resistance. An air outlet is provided on the second sealing plate 32 and the air outlet head 19 is installed. The third sealing plate 33 is installed with a first flange group.

[0042] A plurality of gas flow distribution plates 4 are installed in the air inlet head 11. The shape of the first folded plate 12 is a quadrangular frustum. The shape of the first folded plate 12 is beneficial to the uniform inlet and outlet of gas and is also beneficial to the discharge of suspended or solid particles, etc. The first folded plate 12 includes a first top surface A2B2C2D2, a first bottom surface A1B1C1D1 and the edges of the first folded plate 12. The first bottom surface A1B1C1D1 includes a first bottom edge A1B1, a second bottom edge A1D1, a third bottom edge C1D1 and a fourth bottom edge B1C1. The edges of the air inlet head 11 are cut off by plane α and plane β. Both plane α and plane β are triangles and the shapes of plane α and plane β are different. The edges of the first folded plate 12 include a first side edge A1A2, a second side edge B1B2, a third side edge C1C2 and a fourth side edge D1D2. l A1A2 =l B1B2 . The first bottom surface A1B1C1D1 is rectangular, the length of the first bottom edge A1B1 is equal to the length of the third bottom edge C1D1, that is, l A1B1 =l C1D1 , and the length of the first bottom edge A1B1 is the same as the length of the long side of the first core body 121. The length of the second bottom edge A1D1 is equal to the length of the fourth bottom edge B1C1, that is, l A1D1 =l B1C1 , and the length of the second bottom edge A1D1 is the same as the length of the short side of the first core body 121. The first top surface A2B2C2D2 is provided with a round hole.

[0043] Figure 4 is the front view of the first core body, Figure 5 is the side view of the first core body, Figure 6 is Figure 4 the enlarged schematic view of the position A in Figure 7 is Figure 5 the enlarged schematic view of the position B in. Combining Figure 4 , Figure 5 , Figure 6 and Figure 7 , the first core body 121 includes a plurality of mutually parallel partition groups 61. The partition group 61 includes two parallel partitions. A first channel is provided between the partition groups 61 of the first core body 121. A second channel is provided between two adjacent partition groups 61 of the first core body 121. The number of the first channels is 50, and the number of the second channels is 48. Outer fins 62 are installed in the second channels. The outer fins 62 are located at both ends of the second channels. Inner fins 63 are installed in the first channels. The inner fins 63 are located at both ends of the first channels.

[0044] At the end of the outer fin 62 of the first core body 121, there is a first seal 64. In the middle of one end of the first seal 64, there is a protruding part. Both sides of the protruding part are smooth planes. The shape of the protruding part is a triangular prism. There is a continuous transition between the protruding part and its two side faces. The protruding part abuts against the end of the outer fin 62. At the end of the inner fin 63 of the first core body 121, there is a second seal 65. The second seal 65 includes an upper part and a lower part which are integrally formed. The upper part and the lower part are superposed. The shape of the upper part is a triangular prism. The upper part abuts against the end of the inner fin 63. The shape of the lower part is a cuboid.

[0045] On the left and right sides of the first core body 121, there are cover plates 51 respectively. Brackets 52 are installed on the cover plates 51.

[0046] Figure 9 is the schematic view of the second folding plate. As Figure 9 shown, the cooler 2 includes a second core body 21. The second core body 21 is a cuboid. The second core body 21 includes six faces, and three pairs of opposite faces are heat exchange channels. In front of each heat exchange channel, there is a second folding plate 22. The shape of the second folding plate 22 is a regular square frustum. The shape of the second folding plate 22 is beneficial to the uniform inlet and outlet of gas and also beneficial to the discharge of suspended or solid particles, etc. The second folding plate 22 includes a second top surface A4B4C4D4, a second bottom surface A3B3C3D3 and the edges of the second folding plate 22. The second bottom surface A3B3C3D3 includes a fifth base A3B3, a sixth base A3D3, a seventh base C3D3 and an eighth base B3C3. The plane γ cuts off the edges of the second folding plate 22. The plane γ is a triangle. The edges include a fifth side edge A3A4, a sixth side edge B3B4, a seventh side edge C3C4 and an eighth side edge D3D4. l A3A4 =l B3B4 =lC3C4 = l D3D4 。The second bottom surface A3B3C3D3 is rectangular. The length of the fifth base A3B3 is equal to the length of the seventh base C3D3, i.e., l A3B3 = l C3D3 ,and the length of the fifth base A3B3 is the same as the length of the long side of the second core 21. The length of the sixth base A3D3 is equal to the length of the eighth base B3C3, i.e., l A3D3 = l B3C3 ,and the length of the sixth base A3D3 is the same as the length of the short side of the second core 21. The second top surface A4B4C4D4 is provided with a circular hole. Both the top and bottom of the cooler 2 are covers 23. A lifting ring is provided on the cover 23 at the top of the cooler 2. The cover 23 at the bottom of the cooler 2 is supported by feet 24.

[0047] Figure 10 is the front view of the second core, Figure 11 is the side view of the second core, Figure 12 is Figure 10 the enlarged schematic view at C in Figure 13 is Figure 11 the enlarged schematic view at D in Figure 10 、 Figure 11 、 Figure 12 and Figure 13 ,the second core 21 includes a plurality of mutually parallel partition groups 61. The partition group 61 includes two parallel partitions. A first channel is provided between the partition groups 61 of the second core 21. A second channel is provided between two adjacent partition groups 61 of the second core 21. The number of the first channels and the number of the second channels in the second core 21 are each 21. External fins 62 are installed in the second channels. Internal fins 63 are installed in the first channels. The ends of the external fins 62 of the second core 21 are provided with third seals 66. The ends of the internal fins 63 of the second core 21 are provided with fourth seals 67. The end interface forms of the third seals 66 and the end interface forms of the fourth seals 67 are both type A. The form of the type A seal has been defined in the industry standard NB / T47006 - 2009 "Aluminum Plate - Fin Heat Exchanger".

[0048] The cryogenic cooler 1 is connected to the cold recovery section cooler 2. The specific connection method is that the air outlet head 19 is connected to a second folded plate 22 of the cooler 2 through a pipeline. The cryogenic cooler 1 adopts the first core 121, and the cooling medium adopts the cooling water of the dehumidification system. In the present invention, the cryogenic cooler 1 is connected to the cold recovery section cooler 2 after the cryogenic cooler 1, realizing waste heat recovery and secondary cooling, not only improving the energy - saving benefit by more than 10%, but also reducing the energy consumption of the cooling system by more than 20%.

[0049] The above description is an explanation of the present invention, not a limitation thereof. For the scope defined by the present invention, refer to the claims. Without departing from the basic structure of the present invention, the present invention may be modified in any form.

Claims

1. A combined waste heat recovery conversion heat exchanger, characterized in that: It includes a cryogenic cooler (1) and a cooler (2) connected by a flange and a pipeline; The cryogenic cooler (1) includes a first folded plate (12) and a panel (13); an air inlet is opened on the first folded plate (12), and an air inlet head (11) is installed; a first core body (121) is provided between the first folded plate (12) and the panel (13); a layer of wire mesh (14) is horizontally arranged between the first core body (121) and the panel (13); a sealing plate is covered on one side of the wire mesh (14); flat strips are arranged on the other side of the wire mesh (14); a first head (15) and a second head (16) are respectively arranged on the upper and lower sides of the first core body (121); a cooling water inlet (17) and a cooling water outlet (18) are opened on the first head (15); the panel (13) includes a first sealing plate (31), a second sealing plate (32) and a third sealing plate (33) which are integrally formed; the cross-sections of the first sealing plate (31) and the second sealing plate (32) are both rectangular; the cross-section of the third sealing plate (33) is arc-shaped; the connection angle between the first sealing plate (31) and the second sealing plate (32) is 135°; the second sealing plate (32) and the third sealing plate (33) are welded; an air outlet is opened on the second sealing plate (32), and an air outlet head (19) is installed; the third sealing plate (33) installs a first flange group; The cooler (2) includes a second core body (21); the second core body (21) is a cuboid; the second core body (21) includes six faces, and three pairs of opposite faces are heat exchange channels; a second folded plate (22) is provided in front of each heat exchange channel; an inlet is opened on the second folded plate (22), and an air head is installed; the top and bottom of the cooler (2) are both covers (23); Both the first core body (121) and the second core body (21) include a plurality of mutually parallel partition groups (61); a first channel is provided between the partition groups (61); a second channel is provided between two adjacent partition groups (61); outer fins (62) are installed in the second channel; inner fins (63) are installed in the first channel; A first seal strip (64) is provided at the end of the outer fin (62) of the first core body (121); a protruding part is provided in the middle of one end of the first seal strip (64); both sides of the protruding part are smooth planes; the shape of the protruding part is a triangular prism; a continuous transition is formed between the protruding part and its two side faces; the protruding part abuts against the end of the outer fin (62); a second seal strip (65) is provided at the end of the inner fin (63) of the first core body (121); the second seal strip (65) includes an upper part and a lower part which are integrally formed; the upper part and the lower part are superposed; the shape of the upper part is a triangular prism; the upper part abuts against the end of the inner fin (63); the shape of the lower part is a cuboid.

2. The combined waste heat recovery conversion heat exchanger according to claim 1, wherein: A plurality of air flow distribution plates (4) are installed in the air inlet head (11).

3. The combined waste heat recovery conversion heat exchanger according to claim 1, characterized in that: A third seal (66) is provided at the end of the outer fin (62) of the second core body (21); a fourth seal (67) is provided at the end of the inner fin (63) of the second core body (21); the end interface forms of both the third seal (66) and the fourth seal (67) are type A.

4. The combined waste heat recovery conversion heat exchanger according to claim 1, wherein: Cover plates (51) are respectively provided on the left and right sides of the first core body (121); brackets (52) are installed on the cover plates (51).

5. The combined waste heat recovery conversion heat exchanger according to claim 1, characterized in that: Second flange groups are installed at both the cooling water inlet (17) and the cooling water outlet (18); the second flange groups include flanges and nozzles; the configuration form of the nozzles and the first head (15) is an inclined nozzle.

6. The combined waste heat recovery and conversion heat exchanger according to claim 1, characterized in that: The bottom cover (23) of the cooler (2) is supported by feet (24).

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