A high-temperature tube heat exchanger

Abstract

The application discloses a high-temperature tubular heat exchanger, which comprises a shell, a hot liquid inlet, a hot liquid outlet, a tube box, a cold liquid inlet, a cold liquid outlet, a heat exchange tube bundle, a deflection mechanism and a anti-collision mechanism; the deflection mechanism is arranged on the middle section of the surface of the heat exchange tube bundle; the connecting bolt between the first mounting hole and the second mounting hole is removed, the sleeve cavity is separated from the surface of the connecting piece, then the new deflection guide plate is nested on the surface of the connecting piece through the sleeve cavity, the first mounting hole and the second mounting hole are locked by the bolt, and the replacement of the deflection guide plate is completed; the split structure is simple in operation and low in cost, and can reduce the maintenance pressure of the equipment in the later period; in addition, the deflection base plate and the deflection guide plate not only play the role of adjusting the flow direction, but also help the heat exchange tube bundle and the fluid to realize higher efficiency heat exchange due to the excellent heat conduction characteristics; the deflection guide plate can expand the heat exchange area with the fluid by means of the fin seat, and further improve the heat exchange efficiency of the heat exchange tube bundle.

Description

Technical Field

[0001] This invention relates to the field of tubular heat exchanger technology, specifically a high-temperature tubular heat exchanger. Background Technology

[0002] Tubular heat exchangers are a type of indirect heat exchange equipment that uses the tube walls as the heat transfer surface. They consist of a shell, tube bundle, tube sheet, baffles, etc. Hot and cold fluids flow in the tube side and shell side, respectively. They are characterized by high temperature and high pressure resistance, and structural stability, and are widely used in chemical, energy, and other fields.

[0003] Existing patent application number: 202322879081.4 Novel tubular heat exchanger, comprising: a base shell, a medium outlet pipe fixedly connected to the top of the base shell, a medium outlet pipe fixedly connected to the bottom of the base shell, mounting plates at both ends of the base shell, fastening bolts on the mounting plates, a sealing cylinder on the left side of the mounting plates, and a medium inlet pipe fixedly connected to the top of the sealing cylinder.

[0004] The aforementioned patent describes a tubular heat exchanger. Currently, the tube bundles of tubular heat exchangers are typically fixed to baffles by welding. The main function of the baffles is to change the fluid flow direction. Located in the main channels inside the shell, they are subject to long-term fluid scouring and impact. However, due to the integrated structure of the baffles, they need to be re-welded after wear, which is difficult to replace, costly to manufacture, and not conducive to later maintenance. In addition, the functional structure of the baffles can be further improved to further enhance the heat exchange efficiency of the tube bundle. Anti-impact sleeves are usually installed on the surface of the tube bundles in tubular heat exchangers to prevent the rapid flow at the inlet and outlet from directly impacting the tube bundles. The existing anti-impact sleeves are annular protective plates, which lack buffering measures. Most of the impact force of the fluid is still transmitted to the surface of the tube bundle through the annular protective plate. Under long-term use, the tube bundles are prone to deformation and displacement. The functional structure of the anti-impact sleeves can be further improved to enhance the protection capability of the tube bundles. Therefore, we propose a high-temperature tubular heat exchanger to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature tubular heat exchanger to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-temperature tubular heat exchanger includes a shell, a hot liquid inlet, a hot liquid outlet, a tube box, a cold liquid inlet, a cold liquid outlet, a heat exchange tube bundle, a baffle mechanism, and an anti-impact mechanism. The shell has a hot liquid inlet at its lower left side and a hot liquid outlet at its upper right side. A tube box is flanged at the top port of the shell. A cold liquid inlet is located on the left side of the tube box, and a cold liquid outlet is located on the right side. The cold liquid inlet and outlet are separated by a partition. A heat exchange tube bundle is installed at the bottom of the tube box, with its head connected to the cold liquid inlet and its tail connected to the cold liquid outlet. The shell is fitted over the heat exchange tube bundle. A baffle mechanism is provided in the middle section of the surface of the heat exchange tube bundle, and the baffle mechanism includes a baffle base. The heat exchange tube bundle includes a plate, a first sleeve hole, a connecting piece, a first mounting hole, a baffle plate, a sleeve cavity, and a second mounting hole. A baffle plate is provided in the middle section of the surface of the heat exchange tube bundle. A first sleeve hole is formed on the surface of the baffle plate, which is then sleeved and fixed to the outside of the heat exchange tube bundle. A connecting piece is integrally provided along the side edge of the baffle plate, and a first mounting hole is provided through the edge of the connecting piece. A baffle plate is provided on the side of the baffle plate, and a sleeve cavity is formed on the side of the baffle plate. The baffle plate is nested and connected to the surface of the connecting piece through the sleeve cavity. A second mounting hole is provided through the edge of the baffle plate, extending longitudinally through the sleeve cavity. The number of second mounting holes is the same as the first mounting hole, and their positions correspond. Anti-impact mechanisms are provided at both the upper and lower ends of the surface of the heat exchange tube bundle.

[0007] Preferably, the baffle substrate, connecting piece, and baffle guide plate are all made of copper alloy.

[0008] Preferably, the connecting piece is integrally provided with insert strips on both sides, and the socket cavity is symmetrically provided with insert grooves on both the upper and lower sides. During the process of connecting the connecting piece and socket cavity being sleeved, the insert strips will also be inserted and connected with the insert grooves.

[0009] Preferably, the deflector mechanism further includes fin seats and mounting sleeves. Fin seats are fitted to both sides of the deflector guide plate. Mounting sleeves are welded to the edges of the fin seats. The number of mounting sleeves is the same as that of the second mounting holes and their positions are corresponding. The first mounting hole, the second mounting hole and the mounting sleeve are fastened by bolts.

[0010] Preferably, the fin seats on both sides of the flow deflector can be disassembled independently.

[0011] Preferably, a thermally conductive patch is adhered to the side of the fin holder facing the baffle plate, and the thermally conductive patch is made of silicone grease.

[0012] Preferably, the fin spacing of the fin seat is 6-12 mm.

[0013] Preferably, the anti-impact mechanism includes a connecting seat, a second sleeve hole, a protective plate, a telescopic sleeve, and an elastic folding member. The heat exchange tube bundle surface is provided with connecting seats at both the upper and lower ends. The two sets of connecting seats correspond to the positions of the hydrothermal inlet and the hydrothermal outlet, respectively. A second sleeve hole is provided through the surface of the connecting seat. The connecting seat is sleeved and fixed to the surface of the heat exchange tube bundle through the second sleeve hole. Protective plates are symmetrically arranged on the left and right sides of the connecting seat. Telescopic sleeves are symmetrically installed in the middle of the left and right sides of the connecting seat. The telescopic shaft at the end of the telescopic sleeve is fixed to the protective plate. Elastic folding members are symmetrically installed on the front and rear sides of the protective plate. The elastic folding members are V-shaped. The other end of the elastic folding members is fixed to the connecting seat.

[0014] Preferably, the outer surface of the protective plate has a streamlined structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention utilizes a baffle mechanism installed in the middle section of the heat exchange tube bundle surface. By removing the connecting bolts between mounting holes one and two, the sleeve cavity can be detached from the connecting plate surface. Subsequently, a new baffle guide plate is nested into the connecting plate surface through the sleeve cavity, and then bolts are used to insert and lock mounting holes one and two, thus completing the replacement of the baffle guide plate. The split structure makes replacement simple and cost-effective, reducing the pressure of later equipment maintenance. In addition, the baffle base plate and baffle guide plate not only play a role in adjusting the flow direction, but their excellent thermal conductivity also helps the heat exchange tube bundle and fluid achieve higher heat exchange efficiency.

[0017] This invention achieves the installation connection between the fin seat and the baffle plate by setting a fin seat on the surface of the baffle plate and locking it with the bolts in the mounting sleeve and the second mounting hole. The fin seat expands the heat exchange area between the baffle plate and the fluid, which can further improve the heat exchange efficiency of the heat exchange tube bundle.

[0018] This invention provides an anti-impact mechanism at both ends of the heat exchange tube bundle surface. The connecting seat and the protective plate are connected by a telescopic sleeve, which provides a certain buffer distance for the protective plate. When the protective plate is impacted by fluid, the protective plate is forced to move towards the connecting seat, and at the same time, the elastic folding part is compressed to absorb the impact pressure transmitted from the protective plate, which has a better buffering and protection effect. It can effectively reduce the impact force transmitted to the heat exchange tube bundle and ensure the long-term use of the heat exchange tube bundle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front view of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the present invention.

[0021] Figure 3 This is a front view cross-sectional structural diagram of the pipe box of the present invention.

[0022] Figure 4 This is a partial structural diagram of the heat exchange tube bundle in this invention.

[0023] Figure 5 This is a schematic diagram of the baffle mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of the baffle substrate structure of the present invention.

[0025] Figure 7 This is a schematic diagram of the flow guide plate structure of the present invention.

[0026] Figure 8 This is a schematic diagram of the fin seat structure of the present invention.

[0027] Figure 9 This is a top view of the anti-impact mechanism in this invention.

[0028] Figure 10 This is a schematic diagram of the force state of the anti-impact mechanism in this invention.

[0029] In the diagram: Shell-1, Hydrothermal Inlet-2, Hydrothermal Outlet-3, Tube Box-4, Cold Liquid Inlet-5, Cold Liquid Outlet-6, Heat Exchanger Tube Bundle-7, Baffle Mechanism-8, Baffle Base Plate-81, No. 1 Sleeve Hole-82, Connecting Piece-83, Insert Strip-83a, No. 1 Mounting Hole-84, Baffle Guide Plate-85, Sleeve Cavity-86, Insert Slot-86a, No. 2 Mounting Hole-87, Fin Seat-88, Mounting Sleeve-89, Thermal Conductive Patch-810, Anti-impact Mechanism-9, Connecting Seat-91, No. 2 Sleeve Hole-92, Protective Plate-93, Telescopic Sleeve-94, Elastic Folding Part-95. Detailed Implementation

[0030] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0031] Please see Figure 1-3 This invention provides a high-temperature tubular heat exchanger, comprising a shell 1, a hot liquid inlet 2, a hot liquid outlet 3, a tube box 4, a cold liquid inlet 5, a cold liquid outlet 6, a heat exchange tube bundle 7, a baffle mechanism 8, and an anti-impact mechanism 9. The hot liquid inlet 2 is located at the lower left end of the shell 1, and the hot liquid outlet 3 is located at the upper right end of the shell 1. The tube box 4 is installed at the top port of the shell 1 via a flange. The cold liquid inlet 5 is located on the left side of the tube box 4, and the cold liquid outlet 6 is located on the right side of the tube box 4. The cold liquid inlet 5 and the cold liquid outlet 6 are separated independently by a partition. The heat exchange tube bundle 7 is installed at the bottom of the tube box 4. The first end of the heat exchange tube bundle 7 is connected to the cold liquid inlet 5, and the last end of the heat exchange tube bundle 7 is connected to the cold liquid outlet 6. The shell 1 is sleeved and installed outside the heat exchange tube bundle 7. The baffle mechanism 8 is provided in the middle section of the surface of the heat exchange tube bundle 7, and the anti-impact mechanism 9 is provided at both the upper and lower ends of the surface of the heat exchange tube bundle 7.

[0032] During operation, the cold fluid enters the left side of the tube box 4 from the cold liquid inlet 5, then turns into the right side of the tube box 4 through the heat exchange tube bundle 7, and finally exits the tube box 4 through the cold liquid outlet 6. The hot fluid enters the shell 1 from the hot liquid inlet 2, allowing the hot fluid to exchange heat with the cold fluid through the heat exchange tube bundle 7, and finally exits the shell 1 through the hot liquid outlet 3, thus realizing the heat exchange process.

[0033] Please see Figure 4-7 This invention provides a high-temperature tubular heat exchanger. The baffle mechanism 8 includes a baffle base plate 81, a first sleeve hole 82, a connecting piece 83, a first mounting hole 84, a baffle guide plate 85, a sleeve cavity 86, and a second mounting hole 87. The baffle base plate 81 is disposed in the middle section of the surface of the heat exchange tube bundle 7. The first sleeve hole 82 is formed on the surface of the baffle base plate 81. The baffle base plate 81 is sleeved and fixed to the outside of the heat exchange tube bundle 7 through the first sleeve hole 82. A connecting piece is integrally disposed on the side edge of the surface of the baffle base plate 81. 83. A first mounting hole 84 is provided through the edge of the surface of the connecting piece 83. A flow guide plate 85 is provided on the side of the surface of the flow deflector substrate 81. A sleeve cavity 86 is opened on the side of the flow guide plate 85. The flow guide plate 85 is nested and connected to the surface of the connecting piece 83 through the sleeve cavity 86. A second mounting hole 87 is provided through the edge of the surface of the flow guide plate 85. The second mounting hole 87 passes longitudinally through the sleeve cavity 86. The number of the second mounting holes 87 is the same as that of the first mounting hole 84 and their positions are corresponding.

[0034] A flow-baffle mechanism 8 is provided in the middle section of the surface of the heat exchange tube bundle 7. The flow-baffle mechanism 8 is a split structure. The flow-baffle guide plate 85, as the outer edge structure of the flow-baffle base plate 81, undertakes the main flow-baffle function, which makes the flow-baffle guide plate 85 relatively easy to be damaged. After the flow-baffle guide plate 85 is damaged, it is only necessary to remove the connecting bolts of the first mounting hole 84 and the second mounting hole 87 to remove the sleeve cavity 86 from the surface of the connecting piece 83. Then, the new flow-baffle guide plate 85 is nested on the surface of the connecting piece 83 through the sleeve cavity 86, and then the first mounting hole 84 and the second mounting hole 87 are inserted and locked with bolts to complete the replacement of the flow-baffle guide plate 85. The replacement is simple and low-cost, which can reduce the pressure of later maintenance of the equipment. In addition, the flow-baffle base plate 81 and the flow-baffle guide plate 85 not only play a role in adjusting the flow direction, but their own excellent thermal conductivity can also help the heat exchange tube bundle 7 and the fluid achieve higher efficiency heat exchange.

[0035] To further explain, the baffle plate 81, the connecting piece 83, and the baffle guide plate 85 are all made of copper alloy. Copper alloy has excellent thermal conductivity and corrosion resistance, so that the baffle mechanism 8 not only plays the role of regulating the flow direction, but its own excellent thermal conductivity can also help the heat exchange tube bundle 7 and the fluid to achieve higher efficiency heat exchange.

[0036] To further explain, the connecting piece 83 has an integrally formed insert strip 83a on both sides, and the socket cavity 86 has symmetrically formed insert grooves 86a on both the upper and lower sides. During the process of connecting piece 83 and socket cavity 86 being fitted together, insert strip 83a will also be inserted into insert groove 86a. Through the structural cooperation between insert strip 83a and insert groove 86a, the contact area between baffle substrate 81 and baffle guide plate 85 can be increased to ensure heat conduction efficiency. At the same time, it can further enhance the connection strength between baffle substrate 81 and baffle guide plate 85, making it less prone to shaking due to unstable connection.

[0037] Please see Figure 8 This invention provides a high-temperature tubular heat exchanger. The baffle mechanism 8 further includes a fin seat 88 and a mounting sleeve 89. Fin seats 88 are attached to both sides of the baffle guide plate 85. Mounting sleeves 89 are welded to the edges of the fin seats 88. The number of mounting sleeves 89 is the same as that of the second mounting hole 87, and their positions are corresponding. The first mounting hole 84, the second mounting hole 87, and the mounting sleeve 89 are fastened by bolts, thereby bolting the fin seats 88 to the surface of the baffle guide plate 85. The fin seats 88 can expand the heat exchange area between the baffle guide plate 85 and the fluid, thereby further improving the heat exchange efficiency.

[0038] The fin seat 88 can be installed and locked with the mounting sleeve 89 and the second mounting hole 87 by bolt insertion and locking, so as to realize the installation connection between the fin seat 88 and the baffle plate 85. By expanding the heat exchange area between the baffle plate 85 and the fluid through the fin seat 88, the heat exchange efficiency of the heat exchange tube bundle 7 can be further improved.

[0039] To further explain, the fin seats 88 on both sides of the flow guide plate 85 can be disassembled independently, and users can choose to install the fin seats 88 according to their actual needs, making it highly adaptable.

[0040] To further explain, a thermally conductive patch 810 is attached to the side of the fin holder 88 facing the baffle plate 85. The thermally conductive patch 810 is made of silicone grease and can fill the gap between the baffle plate 85 and the fin holder 88 to ensure heat conduction efficiency.

[0041] To further explain, the fin spacing of the fin seat 88 is 6-12mm to avoid excessive fluid resistance caused by overly dense fins.

[0042] Please see Figure 9-10This invention provides a high-temperature tubular heat exchanger. The anti-impact mechanism 9 includes a connecting seat 91, a second sleeve hole 92, a protective plate 93, a telescopic sleeve 94, and an elastic folding member 95. The heat exchange tube bundle 7 has connecting seats 91 at both the upper and lower ends. The two sets of connecting seats 91 correspond to the positions of the hot liquid inlet 2 and the hot liquid outlet 3, respectively. The connecting seat 91 has a second sleeve hole 92 through it. The connecting seat 91 is sleeved and fixed to the surface of the heat exchange tube bundle 7 through the second sleeve hole 92. The protective plate 93 is symmetrically arranged on the left and right sides of the connecting seat 91. The telescopic sleeve 94 is symmetrically installed in the middle of the left and right sides of the connecting seat 91. The telescopic shaft at the end of the telescopic sleeve 94 is fixed to the protective plate 93 to provide a certain telescopic buffer distance for the protective plate 93. The elastic folding member 95 is symmetrically installed on the front and rear sides of the protective plate 93. The elastic folding member 95 is V-shaped. The other end of the elastic folding member 95 is fixed to the connecting seat 91.

[0043] The connecting seat 91 and the protective plate 93 are connected by a telescopic sleeve 94, which provides a certain buffer distance for the protective plate 93. When the protective plate 93 is impacted by fluid, the protective plate 93 is forced to lean against the connecting seat 91. At the same time, the elastic folding member 95 is compressed and absorbs the impact pressure transmitted from the protective plate 93, which has a better buffering and protection effect. It can effectively reduce the impact force transmitted to the heat exchange tube bundle 7 and ensure the long-term use of the heat exchange tube bundle 7.

[0044] To further explain, the outer surface of the guard plate 93 has a streamlined structure to reduce the fluid impact resistance experienced by the guard plate 93 and further improve its impact protection performance.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature tube heat exchanger, comprising a shell (1), a hot liquid inlet (2), a hot liquid outlet (3), a tube box (4), a cold liquid inlet (5), a cold liquid outlet (6) and a heat exchange tube bundle (7), the left lower end of the shell (1) is provided with the hot liquid inlet (2), the right upper end of the shell (1) is provided with the hot liquid outlet (3), the flange at the top end of the shell (1) is provided with the tube box (4), the left side of the tube box (4) is provided with the cold liquid inlet (5), the right side of the tube box (4) is provided with the cold liquid outlet (6), the cold liquid inlet (5) and the cold liquid outlet (6) are separated independently by a partition, the bottom of the tube box (4) is provided with the heat exchange tube bundle (7), the front end of the heat exchange tube bundle (7) is connected with the cold liquid inlet (5), the tail end of the heat exchange tube bundle (7) is connected with the cold liquid outlet (6), and the shell (1) is sleeved and installed outside the heat exchange tube bundle (7); characterized in that It also comprises a baffle mechanism (8) and a anti-collision mechanism (9), the surface middle section of the heat exchange tube bundle (7) is provided with the baffle mechanism (8), the baffle mechanism (8) comprises a baffle base plate (81), a No. 1 sleeve hole (82), a connecting piece (83), a No. 1 mounting hole (84), a baffle guide plate (85), a sleeve cavity (86) and a No. 2 mounting hole (87), the surface middle section of the heat exchange tube bundle (7) is provided with the baffle base plate (81), the surface of the baffle base plate (81) is provided with the No. 1 sleeve hole (82), the baffle base plate (81) is sleeved and installed outside the heat exchange tube bundle (7) through the No. 1 sleeve hole (82), the surface side of the baffle base plate (81) is integrally provided with the connecting piece (83), the surface edge of the connecting piece (83) is provided with the No. 1 mounting hole (84), the surface side of the baffle base plate (81) is provided with the baffle guide plate (85), the baffle guide plate (85) is provided with the sleeve cavity (86) on the side, the baffle guide plate (85) is nested and connected with the surface of the connecting piece (83) through the sleeve cavity (86), the surface edge of the baffle guide plate (85) is provided with the No. 2 mounting hole (87), the No. 2 mounting hole (87) penetrates the sleeve cavity (86) longitudinally, the number of the No. 2 mounting hole (87) is consistent with that of the No. 1 mounting hole (84) and the position distribution corresponds, and the surface of the heat exchange tube bundle (7) is provided with the anti-collision mechanism (9) at the upper and lower ends.

2. The high temperature tube heat exchanger according to claim 1, characterized in that: The baffle base plate (81), the connecting piece (83) and the baffle guide plate (85) are made of copper alloy material as a whole.

3. The high-temperature tube heat exchanger according to claim 1, characterized in that: The connecting piece (83) is integrally provided with a plug-in strip (83a) on both front and back surfaces, the sleeve cavity (86) is symmetrically provided with a plug-in groove (86a) on both upper and lower surfaces, and the plug-in strip (83a) is also connected with the plug-in groove (86a) during the sleeving process of the connecting piece (83) and the sleeve cavity (86).

4. The high-temperature tube heat exchanger according to claim 1, characterized in that: The baffle mechanism (8) further comprises fin seats (88) and mounting sleeves (89), the baffle guide plates (85) are attached with fin seats (88) on both sides, the edges of the fin seats (88) are welded with mounting sleeves (89), the mounting sleeves (89) are consistent in number with the second mounting holes (87) and correspond in position distribution, the first mounting holes (84), the second mounting holes (87) and the mounting sleeves (89) are locked by bolts.

5. The high-temperature tube heat exchanger according to claim 4, characterized in that: The fin seats (88) on both sides of the baffle guide plates (85) can be independently disassembled.

6. The high-temperature tube heat exchanger according to claim 4, characterized in that: The side of the fin seat (88) facing the baffle guide plate (85) is pasted with a heat-conducting patch (810), and the heat-conducting patch (810) is made of silicone grease.

7. The high-temperature tube heat exchanger according to claim 4, characterized in that: The fin spacing of the fin seat (88) is 6-12mm.

8. The high-temperature tube heat exchanger according to claim 1, characterized in that: The anti-collision mechanism (9) comprises connecting seats (91), second sleeve holes (92), guard plates (93), telescopic sleeves (94) and elastic folding pieces (95), the heat exchange pipe bundles (7) are provided with connecting seats (91) on the upper and lower surfaces, the two groups of connecting seats (91) are opposite to the positions of the hot liquid inlet (2) and the hot liquid outlet (3), respectively, the connecting seats (91) are provided with second sleeve holes (92) penetrating the surfaces, the connecting seats (91) are installed and fixed on the surfaces of the heat exchange pipe bundles (7) through the second sleeve holes (92), the connecting seats (91) are provided with guard plates (93) on the left and right sides, the connecting seats (91) are provided with telescopic sleeves (94) on the left and right sides, the telescopic sleeves (94) are installed and fixed with the guard plates (93) at the ends, the guard plates (93) are provided with elastic folding pieces (95) on the front and rear sides, the elastic folding pieces (95) are V-shaped, and the other ends of the elastic folding pieces (95) are installed and fixed with the connecting seats (91).

9. The high-temperature tube heat exchanger according to claim 8, characterized in that: The outer surface of the guard plate (93) is a streamline structure.

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