A tube sheet assembly for a U-shaped medium tube tube heat exchanger

Abstract

This utility model relates to a tube sheet assembly for a tubular heat exchanger with U-shaped medium tubes, including a tube sheet body and a protective plate. The tube sheet body has a plurality of first connecting through holes evenly distributed along its front edge. The upper half of the front surface of the tube sheet body has a plurality of U-shaped medium tube inlet mounting through holes evenly distributed, and the lower half of the front surface of the tube sheet body has a plurality of U-shaped medium tube outlet mounting through holes evenly distributed. Two first annular mounting grooves are provided on the inner side of the front edge of the tube sheet body near the first connecting through holes, and the two first annular mounting grooves share the same axis as the tube sheet body. A first sealing ring is provided within the first annular mounting groove. The protective plate has a plurality of second connecting through holes evenly distributed along its front edge. The protective plate also has a plurality of first adapting through holes and a plurality of second adapting through holes. The protective plate in this utility model assembly effectively protects the tube sheet body and ensures the sealing at the connection point between the two.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger tube sheet technology, and in particular to a tube sheet assembly for a U-shaped medium tube in a tubular heat exchanger. Background Technology

[0002] The heat exchanger tube sheet is the core component of a shell-and-tube heat exchanger, used to fix the heat exchange tube bundle and separate the medium flow channels. The tube sheet is a thick circular steel plate (or flange plate) with holes precisely drilled to match the outer diameter of the heat exchange tubes. Its thickness must withstand high pressure differentials and thermal stress, and the material is mostly corrosion-resistant metal or composite material.

[0003] Chinese utility model patent CN221549452U discloses a heat exchanger tube sheet, including a tube sheet body with multiple sets of heat exchange tube mounting holes A. A protective circular plate is provided on the tube sheet body, and multiple sets of heat exchange tube mounting holes B are provided on the protective circular plate. The multiple sets of heat exchange tube mounting holes B are matched with the multiple sets of heat exchange tube mounting holes A. A fixing circular groove is provided on the tube sheet body, and the protective circular plate is placed in the fixing circular groove. The beneficial effects are: through the cooperation between the fixing circular groove and the protective circular plate, the surface of the tube sheet body can be shielded, preventing fluid in the tube box of the shell-and-tube heat exchanger from adhering to the surface of the tube sheet body, thus facilitating rapid subsequent treatment of the fouling. It also prevents the surface of the tube sheet body from being eroded and corroded by the fluid, thereby improving the service life of the tube sheet body.

[0004] However, the above solution is for tubular heat exchangers with straight medium tubes and is not applicable to tubular heat exchangers with U-shaped medium tubes. Furthermore, in the above solution, the protective circular plate is placed in the fixed circular groove and fixed by bolts. Since the contact is rigid, its sealing performance cannot be effectively guaranteed.

[0005] Therefore, it is desirable to provide a tube sheet assembly for a tubular heat exchanger with a U-shaped medium tube, which can solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to provide a tube sheet assembly for a U-shaped medium tube tubular heat exchanger. The protective plate in the assembly can effectively protect the tube sheet body and ensure the sealing of the connection between the two.

[0007] To achieve the above-mentioned utility model objectives, this utility model provides a tube sheet assembly for a U-shaped medium tube tubular heat exchanger, including a tube sheet body and a protective plate.

[0008] The tube sheet body has several first connecting through holes evenly provided on the front edge.

[0009] The upper half of the front side of the tube sheet body is evenly provided with several U-shaped medium tube inlet installation through holes, and the lower half of the front side of the tube sheet body is evenly provided with several U-shaped medium tube outlet installation through holes.

[0010] The outlet through hole of the U-shaped medium tube corresponds one-to-one with the inlet through hole of the U-shaped medium tube;

[0011] Two first annular mounting grooves are provided on the front edge of the tube sheet body near the inner side of the first connecting through hole. The two first annular mounting grooves share the same axis with the tube sheet body.

[0012] A first sealing ring is provided inside the first annular mounting groove;

[0013] The protective plate is provided with a plurality of second connecting through holes evenly distributed on the front edge, and the plurality of second connecting through holes correspond one-to-one with the plurality of first connecting through holes on the tube sheet body.

[0014] The protective plate is provided with a number of first adapter through holes and a number of second adapter through holes. The first adapter through holes correspond one-to-one with the inlet installation through holes of the U-shaped medium tube, and the second adapter through holes correspond one-to-one with the outlet installation through holes of the U-shaped medium tube.

[0015] Preferably, two second annular mounting grooves are provided on the back edge of the tube sheet body near the inner side of the first connecting through hole, and the two second annular mounting grooves share the same axis with the tube sheet body;

[0016] A second sealing ring is provided inside the second annular mounting groove.

[0017] Furthermore, the protective plate has two third annular mounting grooves on the front edge near the inner side of the second connecting through hole, and the two third annular mounting grooves share the same axis with the protective plate.

[0018] A third sealing ring is provided inside the third annular mounting groove.

[0019] Preferably, at least two positioning pin holes are provided on the front edge of the tube sheet body, and a positioning pin is fixed on the back of the protective plate at the position corresponding to the positioning pin holes.

[0020] Furthermore, the number of positioning pin holes is two.

[0021] Preferably, the back of the protective plate is provided with a fourth annular mounting groove, the fourth annular mounting groove sharing the same axis with the protective plate and located between the two first annular mounting grooves;

[0022] The fourth annular mounting groove is provided with a fourth sealing ring.

[0023] Preferably, a long groove is provided in the middle of the front side of the protective plate and the back side of the tube plate body.

[0024] The tube sheet assembly for a U-shaped medium tube tubular heat exchanger of this utility model has the following advantages compared with the prior art:

[0025] By attaching a protective plate to the front of the tube sheet body, the front is effectively shielded. When cleaning is required, only the protective plate needs to be removed for cleaning or replacement. The two seals on the front of the tube sheet body and the seal on the back of the protective plate form a triple seal to ensure airtightness. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the front structure of the tube sheet body in this embodiment. Figure 1 ;

[0027] Figure 2 for Figure 1 A schematic diagram of the back side of the tube sheet body;

[0028] Figure 3 This is a front view of a tube sheet assembly for a U-shaped medium tube heat exchanger according to this embodiment. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the front structure of the tube sheet body in this embodiment. Figure 2 ;

[0030] Figure 5 This is a schematic diagram of the back structure of the protective plate in this embodiment;

[0031] Figure 6 This is a front view of a tube sheet assembly for a U-shaped medium tube heat exchanger according to this embodiment. Figure 2 ;

[0032] Figure 7 for Figure 6 A schematic diagram of the back structure of a tube sheet assembly for a U-shaped medium tube in a tubular heat exchanger. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0034] Example

[0035] This embodiment of a tube sheet assembly for a U-shaped medium tube tubular heat exchanger includes a tube sheet body 1 and a protective plate 2.

[0036] like Figure 1As shown, a plurality of first connecting through holes 3 are uniformly provided on the front edge of the tube sheet body 1; a plurality of U-shaped medium tube inlet mounting through holes 4 are uniformly provided on the upper half of the front of the tube sheet body 1, and a plurality of U-shaped medium tube outlet mounting through holes 5 are uniformly provided on the lower half of the front of the tube sheet body 1; the U-shaped medium tube outlet mounting through holes 5 correspond one-to-one with the U-shaped medium tube inlet mounting through holes 4.

[0037] Two first annular mounting grooves 6 are provided on the front edge of the tube sheet body 1 near the inner side of the first connecting through hole 3. The two first annular mounting grooves 6 share the same axis with the tube sheet body 1. A first sealing ring (not shown in the figure) is provided in the first annular mounting groove 6.

[0038] In this embodiment, as Figure 2 As shown, two second annular mounting grooves 7 are provided on the back edge of the tube sheet body 1 near the inner side of the first connecting through hole 3. The two second annular mounting grooves 7 share the same axis with the tube sheet body 1. A second sealing ring (not shown in the drawing) is provided in the second annular mounting groove 7. This arrangement effectively improves the sealing performance of the connection between the tube sheet body 1 and the shell of the tubular heat exchanger.

[0039] like Figure 3 As shown, the protective plate 2 has a plurality of second connecting through holes 8 evenly distributed on the front edge, and the plurality of second connecting through holes 8 correspond one-to-one with the plurality of first connecting through holes 3 on the tube sheet body 1; the protective plate 2 has a plurality of first adapting through holes 9 and a plurality of second adapting through holes 10, the first adapting through holes 9 correspond one-to-one with the U-shaped medium tube inlet mounting through hole 4, and the second adapting through holes 10 correspond one-to-one with the U-shaped medium tube outlet mounting through hole 5.

[0040] In this embodiment, as Figure 3 As shown, the protective plate 2 has two third annular mounting grooves 11 on the inner side of the front edge near the second connecting through hole 8. The two third annular mounting grooves 11 share the same axis with the protective plate 2. A third sealing ring (not shown in the figure) is provided in the third annular mounting groove 11. This arrangement effectively ensures the sealing between the protective plate 2 and the tube box of the tubular heat exchanger.

[0041] Furthermore, such as Figure 4 and Figure 5 As shown, at least two positioning pin holes 12 are provided on the front edge of the tube sheet body 1, and positioning pins 13 are fixed on the back of the protective plate 2 corresponding to the positions of the positioning pin holes 12, so as to facilitate quick positioning and attachment of the protective plate 2 onto the tube sheet body 1. In this embodiment, the number of positioning pin holes 12 is two.

[0042] When installing the aforementioned protective plate, firstly, several U-shaped medium pipes are inserted into the corresponding U-shaped medium pipe inlet mounting through hole 4 and the corresponding U-shaped medium pipe outlet mounting through hole 5; and then they are welded. Then, through the cooperation of the positioning pin hole 12 and the positioning pin 13, the protective plate 2 is initially attached and positioned on the front of the tube sheet body 1. Finally, the tube box of the tube heat exchanger is fixed to the front of the protective plate with bolts (the bolts pass through the through holes of the flange connection end on the tube box, the corresponding first connection through hole 3, the second connection through hole 8 and the through hole of the flange connection end on the tube heat exchanger in sequence, and are finally locked by the nuts at the ends of the bolts). Due to the sealing ring in the first annular mounting groove 6, the sealing between the protective plate 2 and the tube sheet body 1 is effectively guaranteed.

[0043] In this embodiment, a fourth annular mounting groove 14 is provided on the back of the protective plate 2. The fourth annular mounting groove 14 shares the same axis with the protective plate 2 and is located between the two first annular mounting grooves 6. This arrangement achieves triple sealing to further ensure the sealing between the protective plate 2 and the tube sheet body 1.

[0044] In this embodiment, as Figure 6 and Figure 7 As shown, the front of the protective plate 2 and the middle of the back of the tube plate body 1 are provided with long grooves 15 to facilitate the positioning of the tube box and the partition inside the shell.

[0045] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A tube sheet assembly for a U-shaped medium tube tubular heat exchanger, characterized in that, Includes the tube sheet body and the protective plate; The tube sheet body has several first connecting through holes evenly provided on the front edge. The upper half of the front side of the tube sheet body is evenly provided with several U-shaped medium tube inlet installation through holes, and the lower half of the front side of the tube sheet body is evenly provided with several U-shaped medium tube outlet installation through holes. The outlet through hole of the U-shaped medium tube corresponds one-to-one with the inlet through hole of the U-shaped medium tube; Two first annular mounting grooves are provided on the front edge of the tube sheet body near the inner side of the first connecting through hole. The two first annular mounting grooves share the same axis with the tube sheet body. A first sealing ring is provided inside the first annular mounting groove; The protective plate is provided with a plurality of second connecting through holes evenly distributed on the front edge, and the plurality of second connecting through holes correspond one-to-one with the plurality of first connecting through holes on the tube sheet body. The protective plate is provided with several second connecting through holes evenly distributed on the front edge; A number of second connecting through holes correspond one-to-one with a number of first connecting through holes on the tube sheet body; The protective plate is provided with a number of first adapter through holes and a number of second adapter through holes. The first adapter through holes correspond one-to-one with the inlet installation through holes of the U-shaped medium tube, and the second adapter through holes correspond one-to-one with the outlet installation through holes of the U-shaped medium tube.

2. The tube sheet assembly for a U-shaped medium tube heat exchanger as described in claim 1, characterized in that, Two second annular mounting grooves are provided on the back edge of the tube sheet body near the inner side of the first connecting through hole. The two second annular mounting grooves share the same axis with the tube sheet body. A second sealing ring is provided inside the second annular mounting groove.

3. The tube sheet assembly for a U-shaped medium tube tubular heat exchanger as described in claim 2, characterized in that, The protective plate has two third annular mounting grooves on the front edge near the inner side of the second connecting through hole, and the two third annular mounting grooves share the same axis with the protective plate. A third sealing ring is provided inside the third annular mounting groove.

4. A tube sheet assembly for a tubular heat exchanger with a U-shaped medium tube as described in any one of claims 1 to 3, characterized in that, The tube sheet body has at least two positioning pin holes on its front edge, and the protective plate has a positioning pin fixed on its back corresponding to the positioning pin holes.

5. The tube sheet assembly for a U-shaped medium tube tubular heat exchanger as described in claim 4, characterized in that, The number of positioning pin holes is two.

6. The tube sheet assembly for a U-shaped medium tube tubular heat exchanger as described in claim 1, characterized in that, The protective plate has a fourth annular mounting groove on its back. The fourth annular mounting groove shares the same axis with the protective plate and is located between the two first annular mounting grooves. The fourth annular mounting groove is provided with a fourth sealing ring.

7. The tube sheet assembly for a U-shaped medium tube tubular heat exchanger as described in claim 1, characterized in that, The protective plate has a long groove in the middle of the front and the back of the tube sheet body.

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