Quick-mounting silicon carbide heat exchanger

Abstract

This utility model relates to the field of heat exchanger technology and discloses a quick-installation silicon carbide heat exchanger, including a tube sheet. Several baffles are installed on the tube sheet, and the baffles are fixed to the tube sheet by fasteners. Several heat exchange tubes are installed on the tube sheet and the baffles. Tube shells are fitted onto the baffles and heat exchange tubes. A flange one of the tube shell is in contact with a flange three of the tube sheet. A tube box is fitted to the other side of the tube sheet, and a flange two of the tube box is in contact with a flange three. A connecting member is provided on flange one, flange two, and flange three. The connecting member includes two semi-circular clamps, which are fixed to each other by bolts. This device solves the problems of high welding difficulty of baffles and the need for a large number of bolts for tube sheet installation, making assembly difficult. By setting the baffles as a detachable structure installed by fasteners, and connecting the tube sheet by two semi-circular clamps, the use of bolts is reduced, making disassembly and assembly easier.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and more specifically, to a quick-install silicon carbide heat exchanger. Background Technology

[0002] Silicon carbide heat exchangers are a new type of heat exchanger that uses silicon carbide ceramic material as the heat transfer medium. The most common structure is a shell-and-tube type. Due to their excellent properties such as corrosion resistance, high temperature resistance, and high thermal conductivity, they are widely used in metallurgy, machinery, building materials, chemical and other fields.

[0003] Currently, the tube sheet, tube shell, and tube box of silicon carbide heat exchangers on the market are fixedly connected by bolts. To ensure connection strength and sealing performance, a large number of bolts are usually installed, making disassembly and assembly difficult. At the same time, in the existing technology, when assembling the baffle, it is necessary to fit the baffle onto the mounting rod, adjust the position appropriately, and then fix it by welding to ensure that the position of the baffle and the tube sheet is fixed and to prevent the baffle from shifting due to impact. However, the welded installation is not easy to disassemble and is inconvenient for maintenance. Moreover, the baffle position needs to be kept stable during welding, which is difficult to operate, making the assembly of the heat exchanger difficult. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a quick-install silicon carbide heat exchanger.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A quick-install silicon carbide heat exchanger includes a tube sheet with several baffles mounted on it. The baffles are fixed to the tube sheet by fasteners. Several heat exchange tubes are mounted on the tube sheet and the baffles. Tube shells are fitted onto the baffles and the heat exchange tubes. A flange one of the tube shells is in contact with a flange three of the tube sheet. A tube box is fitted onto the other side of the tube sheet. A flange two of the tube box is in contact with a flange three. A connector is provided around flange one, flange two, and flange three. The connector includes two semi-circular hoops, which are fixed to each other by bolts.

[0007] The present invention is further configured such that: a plurality of mounting rods are provided on the tube sheet, the mounting rods are arranged in the same direction as the heat exchange tubes, a plurality of locking blocks are evenly provided on the mounting rods, two locking blocks are grouped together, the baffle plate can be locked between two locking blocks in the same group, a plurality of fixing holes are correspondingly opened on the baffle plate, one side of the fixing hole is semi-circular, the semi-circle of the fixing hole has the same radius as the mounting rod, the other side of the fixing hole is square, the maximum distance from the square to the semi-circle of the fixing hole is greater than the maximum radial distance from the mounting rod to the locking block, and the fixing member is locked with the fixing hole.

[0008] The present invention is further configured such that: the fixing member includes a positioning block, the positioning block passes through a fixing hole and is engaged with the fixing hole, one end of the positioning block passing through the fixing hole is semi-cylindrical, and a semi-threaded column two is slidably connected to the one end of the positioning block passing through the fixing hole along the axial direction, one end of the semi-threaded column two abuts against the corresponding side of the locking block, and a nut is threadedly connected to both the positioning block and the semi-threaded column two, and the nut abuts against the corresponding side of the locking block.

[0009] The present invention is further configured such that: the positioning block includes a connecting section, the side of the connecting section opposite to the corresponding mounting rod is square, the connecting section can fit into the square side of the fixing hole, a limiting block is connected to the side of the connecting section opposite to the second semi-threaded column, the limiting block extends out of the fixing hole, the limiting block is engaged with the baffle plate, the other side of the connecting section is connected to the first semi-threaded column, the first semi-threaded column can be combined with the second semi-threaded column to form a complete thread structure, a sliding groove is provided on the axial end face of the second semi-threaded column, and a corresponding retaining strip is provided on the axial end face of the second semi-threaded column, the retaining strip is slidably connected to the sliding groove.

[0010] The present invention is further configured such that: both flange one and flange two have a slot on the side away from flange three, the slot is annular and coaxial with the flange, the cross-section of the semi-ring hoop is "U" shaped, the end faces on both sides of the semi-ring hoop are respectively in contact with the side faces of flange one and flange two, a protruding ring is provided on both end faces of the semi-ring hoop, the protruding ring is engaged with the slot, and a connecting block is provided on both radial end faces of the semi-ring hoop, the connecting blocks of the two semi-ring hoops are connected to each other.

[0011] The present invention is further configured such that: a plurality of positioning posts are provided on both sides of the flange three, the positioning posts can be inserted into the flange one and flange two respectively, a sealing ring is snapped on both sides of the flange three, the other end of the sealing ring is snapped into the flange one and flange two respectively, the sealing ring is gourd-shaped, and the thinnest point of the cross-section of the sealing ring is on the end face of the flange three.

[0012] The advantages of this utility model are:

[0013] 1. The baffle plate is fastened to the mounting rod of the tube sheet by a fastener. The mounting rod is equipped with a corresponding locking block. The mounting rod and the locking block can pass through the fixing hole of the baffle plate at the same time. After moving the baffle plate to a suitable position, the baffle plate is pushed radially so that the baffle plate is locked between the two locking blocks. Then, the positioning block is passed through the fixing hole. After installing the semi-threaded column II, it can be fixed with a nut. That is, the fastener is fixed on the baffle plate, so that the mounting rod cannot move in the fixing hole. Thus, the baffle plate is locked between the two locking blocks, realizing the installation and fixing. This replaces the welding in the existing technology, and can be disassembled and assembled more conveniently.

[0014] 2. The pipe shell, pipe box, and pipe sheet are respectively equipped with flange one, flange two, and flange three. Flange three is equipped with a positioning post and a gourd-shaped sealing ring. During installation, the positioning post and sealing ring are engaged with flange one and flange two, thereby connecting the three flanges together for easy installation. Then, the two semi-ring hoops of the connector are inserted into the flanges and connected with bolts, which can connect the pipe shell, pipe box, and pipe sheet together, greatly reducing the use of bolts and facilitating assembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the present invention;

[0016] Figure 2 For along Figure 1 The cross-sectional view along line AA is shown below;

[0017] Figure 3 for Figure 2 The enlarged view of part B shown;

[0018] Figure 4 This is a schematic diagram of the heat exchange tube structure of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of section C shown;

[0020] Figure 6 This is a schematic diagram of the baffle structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the fastener structure of this utility model;

[0022] Figure 8 This is an exploded structural diagram of the fastener of this utility model;

[0023] In the diagram: 1. Tube shell; 11. Flange 1; 2. Tube box; 21. Flange 2; 3. Tube sheet; 31. Flange 3; 32. Positioning post; 33. Mounting rod; 34. Clamping block; 4. Heat exchange tube; 5. Baffle plate; 51. Fixing hole; 6. Connecting piece; 61. Semi-ring clamp; 62. Convex ring; 63. Connecting block; 7. Slot; 8. Sealing ring; 9. Fixing piece; 91. Positioning block; 911. Connecting section; 912. Limiting block; 913. Semi-threaded post 1; 914. Slide groove; 92. Semi-threaded post 2; 921. Clamping strip; 93. Nut. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] Please see Figure 1-8 The present invention provides the following technical solution:

[0028] A quick-install silicon carbide heat exchanger includes a tube sheet 3, on which a plurality of mounting rods 33 are provided. The mounting rods 33 are arranged along the axial direction of the tube sheet 3. A plurality of baffles 5 are installed on all the mounting rods 33. A plurality of locking blocks 34 are evenly arranged on the mounting rods 33. Two locking blocks 34 form a group, and the baffles 5 can be locked between two locking blocks 34 in the same group.

[0029] The baffle plate 5 has several fixing holes 51. One side of the fixing hole 51 is semi-circular, and the other side is square. The radius of the semi-circle of the fixing hole 51 is the same as that of the mounting rod 33. The maximum distance from the square to the semi-circle of the fixing hole 51 is greater than the maximum radial distance from the mounting rod 33 to the locking block 34. That is, the mounting rod 33 and the locking block 34 can pass through the fixing hole 51 at the same time. The baffle plate 5 can slide on the mounting rod 33 to a suitable position. Then, the baffle plate 5 can be pushed radially to lock it between the two corresponding locking blocks 34. After the baffle plate 5 and the locking block 34 are locked together, a fixing member 9 is inserted into the fixing hole 51. The two ends of the fixing member 9 are locked on both sides of the baffle plate 5. The fixing member 9 and the mounting rod 33 fill the fixing hole 51 together, thereby preventing the mounting rod 33 from sliding in the fixing hole 51 and ensuring that the baffle plate 5 is fixed on the mounting rod 33. The baffle plate 5 can be disassembled and assembled by removing the fixing member 9. The operation is convenient.

[0030] The fastener 9 includes a positioning block 91, which passes through and engages with the fixing hole 51. One end of the positioning block 91 passing through the fixing hole 51 is semi-cylindrical. A semi-threaded post 92 is slidably connected to the end of the positioning block 91 passing through the fixing hole 51 along the axial direction. One end of the semi-threaded post 92 abuts against the corresponding side of the locking block 34. A nut 93 is threadedly connected to both the positioning block 91 and the semi-threaded post 92. The nut 93 abuts against the corresponding side of the locking block 34.

[0031] The positioning block 91 includes a connecting section 911. The side of the connecting section 911 facing away from the corresponding mounting rod 33 is square. The connecting section 911 can fit into the square side of the fixing hole 51. The side of the connecting section 911 facing away from the second semi-threaded column 92 is connected to a limiting block 912. The limiting block 912 extends out of the fixing hole 51 and is engaged with the baffle plate 5. The other side of the connecting section 911 is connected to a first semi-threaded column 913. The first semi-threaded column 913 can be combined with the second semi-threaded column 92 to form a complete thread structure. A sliding groove 914 is provided on the axial end face of the first semi-threaded column 913. A corresponding retaining strip 921 is provided on the axial end face of the second semi-threaded column 92. The retaining strip 921 is slidably connected to the sliding groove 914.

[0032] During installation, first, the positioning block 91 is passed through the fixing hole 51, so that the limiting block 912 abuts against the baffle 5. At this time, the connecting section 911 fills the space between the mounting rod 33 and the square side of the fixing hole 51. The first semi-threaded column 913 passes through the fixing hole 51 and extends to the other side of the baffle 5. Then, the second semi-threaded column 92 is pushed along the slide groove 914 until the end face of the second semi-threaded column 92 abuts against the corresponding locking block 34. At this time, the other end face of the second semi-threaded column 92 is flush with the end face of the first semi-threaded column 913. The first semi-threaded column 913 and the second semi-threaded column 92 form a complete threaded column. Finally, the nut 93 is screwed into the threaded column until the nut 93 abuts against the locking block 34, which can lock the fixing part 9 onto both sides of the baffle 5, so that the mounting rod 33 will not move in the fixing hole 51, thus ensuring that the baffle 5 is locked between the two locking blocks 34, ensuring the relative position of the baffle 5 on the mounting rod 33.

[0033] A number of heat exchange tubes 4 are installed on the tube sheet 3 and several baffles 5. A tube shell 1 is sleeved on the baffles 5 and the heat exchange tubes 4. The first flange 11 of the tube shell 1 is in contact with the third flange 31 of the tube sheet 3. A tube box 2 is attached to the other side of the tube sheet 3. The second flange 21 of the tube box 2 is in contact with the third flange 31. A connector 6 is provided on the first flange 11, the second flange 21 and the third flange 31. The connector 6 includes two semi-circular hoops 61. The two semi-circular hoops 61 are fixed to each other by bolts, thereby reducing the use of bolts and facilitating the overall assembly.

[0034] Both flange 11 and flange 21 have a groove 7 on the side away from flange 31. The groove 7 is annular and coaxial with flange 11. The cross-section of the semi-ring hoop 61 is "U". The end faces of the two sides of the semi-ring hoop 61 are respectively attached to the side faces of flange 11 and flange 21. A protruding ring 62 is provided on the end faces of the two sides of the semi-ring hoop 61. The protruding ring 62 is engaged with the groove 7. A connecting block 63 is provided on the two radial end faces of the semi-ring hoop 61. The connecting blocks 63 of the two semi-ring hoops 61 are connected to each other.

[0035] During installation, the two semi-circular clamps 61 can be inserted into the slots 7 first, and then bolts can be used to tighten the connection. The installer does not need to pay extra attention to maintaining the position of the semi-circular clamps 61, making the operation more convenient. In addition, the cooperation between the convex ring 62 and the slot 7 improves the connection strength of the connector 6 to the three flanges.

[0036] Several positioning posts 32 are provided on both sides of flange 31. The positioning posts 32 can be inserted into flange 11 and flange 21 respectively to position the three flanges, ensure the accurate position of heat exchange tube 4 on tube sheet 3, and provide auxiliary support during installation without the need for the assembler to hold it by hand, thus reducing the assembly difficulty.

[0037] Both sides of flange 31 are fitted with sealing rings 8. The other end of the sealing ring 8 is fitted into flange 11 and flange 21 respectively. The sealing ring 8 is gourd-shaped. The thinnest point of the cross-section of the sealing ring 8 is on the end face of flange 31. The fitting of the sealing ring 8 can also provide auxiliary support between the various structures. At the same time, the connection between the sealing ring 8 and the flanges on both sides is more stable, ensuring the sealing performance between the connecting surfaces.

[0038] Specifically, the baffle plate 5 is snapped onto the mounting rod 33 of the tube sheet 3 by the fastener 9. The mounting rod 33 is provided with a corresponding locking block 34. The mounting rod 33 and the locking block 34 can pass through the fixing hole 51 of the baffle plate 5 at the same time. After moving the baffle plate 5 to a suitable position, the baffle plate 5 is pushed radially so that the baffle plate 5 is snapped between the two locking blocks 34. Then, the positioning block 91 is passed through the fixing hole 51, and the semi-threaded column 92 is installed and fixed with the nut 93. That is, the fastener 9 is fixed on the baffle plate 5, so that the mounting rod 33 cannot move in the fixing hole 51, thereby snapping the baffle plate 5 between the two locking blocks 34, realizing the installation and fixing, replacing the welding in the prior art, which can be disassembled and assembled, and the assembly is more convenient.

[0039] The tube shell 1, tube box 2, and tube sheet 3 are respectively provided with flange 11, flange 21, and flange 31. Flange 31 is provided with positioning post 32 and gourd-shaped sealing ring 8. During installation, positioning post 32 and sealing ring 8 are engaged with flange 11 and flange 21 respectively, thereby connecting the three flanges together for easy installation. Then, the two semi-rings 61 of connector 6 are engaged with the flanges and connected by bolts, which can connect tube shell 1, tube box 2, and tube sheet 3 together, greatly reducing the use of bolts and facilitating assembly.

[0040] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar counterparts and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-install silicon carbide heat exchanger, comprising a tube sheet (3), characterized in that: A plurality of baffles (5) are installed on the tube sheet (3). The baffles (5) are fixed to the tube sheet (3) by fasteners (9). A plurality of heat exchange tubes (4) are installed on the tube sheet (3) and the plurality of baffles (5). A plurality of mounting rods (33) are provided on the tube sheet (3). The mounting rods (33) and the heat exchange tubes (4) are arranged in the same direction. A plurality of locking blocks (34) are evenly provided on the mounting rods (33). Two locking blocks (34) form a group. The baffles (5) can be locked between two locking blocks (34) in the same group. A plurality of fixing holes (51) are correspondingly opened on the baffles (5). One side of the fixing hole (51) is semi-circular. The semi-circularity of the fixing hole (51) is the same as the radius of the mounting rod (33). The other side of the fixed hole (51) is square. The maximum distance from the square to the semicircle of the fixed hole (51) is greater than the maximum radial distance from the mounting rod (33) to the locking block (34). The fixing member (9) is engaged with the fixed hole (51). The baffle plate (5) and the heat exchange tube (4) are fitted with a tube shell (1). The flange one (11) of the tube shell (1) is in contact with the flange three (31) of the tube plate (3). The tube box (2) is attached to the other side of the tube plate (3). The flange two (21) of the tube box (2) is in contact with the flange three (31). The flange one (11), flange two (21) and flange three (31) are together surrounded by a connector (6). The connector (6) includes two semi-circular hoops (61). The two semi-circular hoops (61) are fixed to each other by bolts.

2. The quick-installation silicon carbide heat exchanger according to claim 1, characterized in that: The fixing component (9) includes a positioning block (91), which passes through a fixing hole (51) and is engaged with the fixing hole (51). One end of the positioning block (91) passing through the fixing hole (51) is semi-cylindrical. A semi-threaded column (92) is slidably connected to the other end of the positioning block (91) passing through the fixing hole (51) along the axial direction. One end of the semi-threaded column (92) abuts against the corresponding side of the locking block (34). A nut (93) is threadedly connected to both the positioning block (91) and the semi-threaded column (92). The nut (93) abuts against the corresponding side of the locking block (34).

3. A quick-installation silicon carbide heat exchanger according to claim 2, characterized in that: The positioning block (91) includes a connecting section (911). One side of the connecting section (911) facing away from the corresponding mounting rod (33) is square. The connecting section (911) can be fitted with the square side of the fixing hole (51). One side of the connecting section (911) facing away from the half-threaded column two (92) is connected with a limiting block (912). The limiting block (912) extends out of the fixing hole (51), and the limiting block (912) is clamped with the baffle plate (5). The other side of the connecting section (911) is connected with a half-threaded column one (913). The half-threaded column one (913) can be combined with the half-threaded column two (92) to form a complete threaded structure. A chute (914) is formed on the axial end surface of the half-threaded column one (913), and a clamping strip (921) is correspondingly arranged on the axial end surface of the half-threaded column two (92). The clamping strip (921) is slidably connected with the chute (914).

4. A quick-installation silicon carbide heat exchanger according to claim 1, characterized in that: On one side of the flange one (11) and the flange two (21) facing away from the flange three (31), a clamping groove (7) is formed. The clamping groove (7) is in a ring shape coaxial with the flange one (11). The cross-section of the semi-ring hoop (61) is in the shape of "冖". The end surfaces on both sides of the semi-ring hoop (61) are respectively fitted with the side surfaces of the flange one (11) and the flange two (21). Convex rings (62) are arranged on the end surfaces on both sides of the semi-ring hoop (61). The convex rings (62) are clamped with the clamping grooves (7). Connecting blocks (63) are arranged on the two radial end surfaces of the semi-ring hoop (61). The connecting blocks (63) of the two semi-ring hoops (61) are correspondingly connected.

5. A quick-installation silicon carbide heat exchanger according to claim 4, characterized in that: A plurality of positioning columns (32) are arranged on both sides of the flange three (31). The positioning columns (32) can be correspondingly inserted into the flange one (11) and the flange two (21). Sealing rings (8) are clamped on both sides of the flange three (31). The other ends of the sealing rings (8) are correspondingly clamped into the flange one (11) and the flange two (21). The sealing rings (8) are in a gourd shape, and the thinnest point of the cross-section of the sealing rings (8) is on the end surface of the flange three (31).

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