CN216770321U - Expansion joint structure of tube plate and tantalum tube - Google Patents
Expansion joint structure of tube plate and tantalum tube Download PDFInfo
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- CN216770321U CN216770321U CN202220316213.5U CN202220316213U CN216770321U CN 216770321 U CN216770321 U CN 216770321U CN 202220316213 U CN202220316213 U CN 202220316213U CN 216770321 U CN216770321 U CN 216770321U
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Abstract
The utility model provides an expansion joint structure of a tube plate and a tantalum tube, and belongs to the technical field of heat exchangers. The expansion joint structure solves the problem that the existing expansion joint structure needs a thicker tantalum tube wall, so that the cost is higher. The tube plate is provided with a plurality of through tube holes, the expansion joint structure comprises an expansion joint tantalum tube and a plurality of expansion joint grooves in the wall of the tube hole, the wall thickness of the expansion joint tantalum tube is larger than that of the tantalum tube, the expansion joint tantalum tube is arranged in the tube hole in a penetrating mode, part of the expansion joint tantalum tube protrudes outwards and is embedded into the expansion joint grooves to enable the expansion joint tantalum tube to be fixedly connected with the tube plate, and the tantalum tube penetrates through the expansion joint tantalum tube and is fixedly connected with the expansion joint tantalum tube in a welding mode. The expansion joint structure has the advantage of reducing the cost of the tantalum tube under the condition of ensuring that the expansion joint cannot be broken.
Description
Technical Field
The utility model belongs to the technical field of heat exchangers, and relates to an expansion joint structure of a tube plate and a tantalum tube.
Background
Tantalum is a light gray rare precious metal material, the melting point is 2996 degrees, the price of the tantalum material is very high, and the tantalum material equipment usually adopts a composite plate structure or a lining structure, so that the purpose of reducing the equipment cost is achieved.
Tantalum tubes are used as heat exchange tubes in the heat exchanger, two ends of each tantalum tube need to be fixedly connected with a tube plate, and the existing fixedly connecting structure, for example, Chinese patent document data discloses a U-shaped tube heat exchanger [ application number: 201220673099.8; authorization notice number: CN202928408U ], which comprises a shell, a tantalum steel composite tube plate connected with the shell and a tube box connected with the tantalum steel composite tube plate, wherein a pull rod is arranged in the shell, a distance tube, a plurality of baffle plates and a tantalum U-shaped heat exchange tube are arranged in the tube box, a partition plate for dividing the inner space of the tube box into an upper tube side and a lower tube side is arranged in the tube box, two ends of the tantalum U-shaped heat exchange tube penetrate through the tantalum steel composite tube plate and are respectively communicated with the upper tube side and the lower tube side, the upper tube side is connected with a sulfuric acid inlet, the lower tube side is connected with a sulfuric acid outlet, a first tantalum lining layer is arranged in the upper tube side, a second tantalum lining layer is arranged in the lower tube side, a third tantalum lining layer is arranged on the inner surface of the sulfuric acid inlet, a fourth tantalum lining layer is arranged on the inner surface of the sulfuric acid outlet, and a cooling water inlet and a cooling water outlet are arranged on the shell.
According to the heat exchanger with the structure, the plurality of expansion grooves used for expanding connection with the tantalum U-shaped heat exchange tube are formed in the tube hole of the heat exchange tube, and during machining, the tantalum U-shaped heat exchange tube is expanded connected with the tantalum steel composite tube plate through the expansion grooves and then welded. When the expansion joint is performed, if the wall thickness of the tantalum U-shaped heat exchange tube is insufficient, the expansion joint is easy to break, so that the tantalum U-shaped heat exchange tube needs to be made thicker to prevent the expansion joint from breaking, more tantalum materials are needed, and the price of the tantalum materials is very high, so that the cost of the tantalum U-shaped heat exchange tube is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an expansion joint structure of a tube plate and a tantalum tube aiming at the problems in the prior art, and solves the technical problem of reducing the cost of the tantalum tube under the condition of ensuring that an expansion joint is not broken.
The purpose of the utility model can be realized by the following technical scheme: the expanded connection structure is characterized in that the expanded connection structure comprises an expanded connection tantalum tube and a plurality of expanded connection grooves in the wall of the tube hole, the wall thickness of the expanded connection tantalum tube is larger than that of the tantalum tube, the expanded connection tantalum tube is arranged in the tube hole in a penetrating mode, part of the expanded connection tantalum tube protrudes outwards and is embedded into the expanded connection grooves to enable the expanded connection tantalum tube to be fixedly connected with the tube plate, and the tantalum tube penetrates through the expanded connection tantalum tube and is fixedly connected with the expanded connection tantalum tube in a welding mode.
And the tantalum tube is fixedly connected with the tube plate in an expanded mode, and then the tantalum tube is fixedly connected with the expanded tantalum tube in a welding mode, so that the tantalum tube is fixed with the tube plate. The wall thickness of the expansion joint tantalum tube is larger than that of the tantalum tube, the wall thickness of the expansion joint tantalum tube is thick, the expansion joint tantalum tube cannot crack during expansion joint, the tantalum tube is fixed on the expansion joint tantalum tube in a welding mode, the expansion joint tantalum tube can be made to be correspondingly thin, and the cost of the tantalum tube can be reduced.
In the expansion joint structure of the tube plate and the tantalum tube, the end face of the tube plate is provided with the tantalum plate, the tube hole penetrates through the tantalum plate, and the tantalum plate is fixedly connected with the expansion joint tantalum tube in a welding mode. The structure further improves the firm degree of the expansion joint tantalum tube for fixedly connecting, and separates the tube plates to play a better anti-corrosion role.
In the expanded connection structure of the tube plate and the tantalum tube, the tube hole comprises an annular counterbore close to one end of the tantalum plate, the inner diameter of the counterbore is larger than that of the tube hole, part of the tantalum plate is bent inwards and is embedded into the counterbore, and the part of the tantalum plate is fixedly connected with the expanded connection tantalum tube in a welding mode. The arrangement of the reaming provides an installation space, and simultaneously provides a welding space, so that the space is reasonably utilized, and the expansion joint structure of the tube plate and the tantalum tube is compact and smooth.
In the expansion joint structure of the tube plate and the tantalum tube, the cross section of the part of the tantalum plate in the counterbore is arc-shaped. The transition is arc-shaped, so that the medium can better enter and exit the tantalum tube.
In the expansion joint structure of the tube plate and the tantalum tube, the outer end part of the expansion joint tantalum tube is located between the outer end part of the tantalum tube and the tantalum plate, and the outer end part of the tantalum tube is arranged in a retracting manner relative to the outer end part of the expansion joint tantalum tube. The structure can prevent the formation of grooves between the outer end part of the tantalum pipe, the outer end part of the expansion-joint tantalum pipe and the tantalum plate, and avoid liquid accumulation. In the expansion joint structure of the tube plate and the tantalum tube, the length of the expansion joint tantalum tube is greater than that of the tube hole, one end of the expansion joint tantalum tube, which is close to the tantalum plate, is arranged in a retracted mode, and the other end of the expansion joint tantalum tube extends out of the tube hole. The structure ensures the expansion joint firmness degree of the expansion joint tantalum tube and the tube plate.
In the expanded connection structure of the tube plate and the tantalum tube, the tantalum tube and the expanded tantalum tube are in clearance fit. The tantalum tube and the expansion joint tantalum tube can be attached to each other and can also have a certain gap.
In the expanded connection structure of the tube plate and the tantalum tube, the wall thickness of the expanded connection tantalum tube is 1.5-2.5mm, and the wall thickness of the tantalum tube is 0.3-0.45 mm.
Compared with the prior art, the expansion joint structure of the tube plate and the tantalum tube has the following advantages:
1. the expansion joint structure is fixedly connected with the tube plate through expansion joint of the tantalum tube and fixedly connected with the tantalum tube in a welding mode, so that the tantalum tube is fixed with the tube plate, the wall thickness of the expansion joint tantalum tube is larger than that of the tantalum tube, the tantalum tube is prevented from being broken, and meanwhile the cost of the tantalum tube is reduced.
2. One end of the tube hole of the expansion joint structure is provided with a reaming hole, so that an installation space and a welding space are provided, the space is reasonably utilized, and the expansion joint structure of the tube plate and the tantalum tube is compact and flat.
Drawings
FIG. 1 is a schematic view showing the overall structure of the present tube sheet and tantalum tube expansion joint structure.
FIG. 2 is a schematic view of the present tantalum tube, tantalum plate and expanded tantalum tube weld.
In the figure, 1, a tube plate; 2. a tube hole; 21. reaming; 3. expanding and connecting a tantalum tube; 4. expanding and connecting the groove; 5. a tantalum tube; 6. a tantalum plate.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a tube hole 2 is formed in a tube plate 1, in this embodiment, taking one tube hole 2 as an example, the expansion joint structure includes an expansion joint tantalum tube 3 and expansion joint grooves 4 on a wall of the tube hole 2, in this embodiment, the expansion joint grooves 4 are annular grooves, the number of the expansion joint grooves is two, and in actual production, the number of the expansion joint grooves 4 may be three or four.
The wall thickness of the expanded tantalum tube 3 is greater than that of the tantalum tube 5, in this embodiment, the wall thickness of the expanded tantalum tube 3 is 2mm, the wall thickness of the tantalum tube 5 is 0.38mm, in actual production, the wall thickness of the expanded tantalum tube 3 may be 1.5mm or 2.5mm, and the wall thickness of the tantalum tube 5 may be 0.3mm or 0.45 mm.
The end face of the tube plate 1 is provided with a tantalum plate 6, the tube hole 2 penetrates through the tantalum plate 6, as shown in fig. 2, the tube hole 2 comprises an annular counterbore 21 close to one end of the tantalum plate 6, the inner diameter of the counterbore 21 is larger than that of the tube hole 2, the tantalum plate 6 is partially bent inwards and embedded into the counterbore 21, and the cross section of the part, located in the counterbore 21, of the tantalum plate 6 is arc-shaped.
The expansion-joint tantalum tube 3 is arranged in the tube hole 2 in a penetrating mode, part of the expansion-joint tantalum tube 3 protrudes outwards and is embedded into the expansion-joint groove 4, so that the expansion-joint tantalum tube 3 is fixedly connected with the tube plate 1 in an expansion-joint mode, the length of the expansion-joint tantalum tube 3 is larger than that of the tube hole 2, one end, close to the tantalum plate 6, of the expansion-joint tantalum tube 3 is arranged in a retracting mode, and the other end of the expansion-joint tantalum tube extends out of the tube hole 2. The tantalum tube 5 penetrates through the expansion tantalum tube 3, the tantalum tube 5 is in clearance fit with the expansion tantalum tube 3, the outer end portion of the expansion tantalum tube 3 is located between the outer end portion of the tantalum tube 5 and the tantalum plate 6, the outer end portion of the tantalum tube 5 is arranged in a retracting mode relative to the outer end portion of the expansion tantalum tube 3, and the expansion tantalum tube 3 is fixedly connected with the tantalum tube 5, the expansion tantalum tube 3 and the tantalum plate 6 in a welding mode.
During assembly, the expansion-joint tantalum tube 3 is inserted into the tube hole 2, the expansion-joint tantalum tube 3 is fixedly connected with the tube plate 1 in an expansion-joint mode, then the expansion-joint tantalum tube 3 is fixedly connected with the tantalum plate 6 in a welding mode, the tantalum tube 5 penetrates through the expansion-joint tantalum tube 3, and the tantalum tube 5 is fixedly connected with the expansion-joint tantalum tube 3 in a welding mode.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Although the terms tubesheet 1, tubebore 2, counterbore 21, expanded tantalum tube 3, expanded groove 4, tantalum tube 5, tantalum plate 6, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. The utility model provides an expanded joint structure of tube sheet and tantalum pipe, tube hole (2) that a plurality of runs through have in tube sheet (1), its characterized in that, expanded joint structure include expanded joint tantalum pipe (3) and a plurality of expanded joint groove (4) on tube hole (2) pore wall, the wall thickness of expanded joint tantalum pipe (3) is greater than the wall thickness of tantalum pipe (5), expanded joint tantalum pipe (3) wear to establish in tube hole (2), expanded joint tantalum pipe (3) part is outwards protruding and is embedded into expanded joint groove (4) and make expanded joint tantalum pipe (3) and tube sheet (1) link firmly mutually, tantalum pipe (5) pass expanded joint tantalum pipe (3) and tantalum pipe (5) and expanded joint tantalum pipe (3) welding link firmly.
2. The tube plate and tantalum tube expanded joint structure according to claim 1, wherein a tantalum plate (6) is arranged on an end face of the tube plate (1), the tube hole (2) penetrates through the tantalum plate (6), and the tantalum plate (6) is fixedly connected with the expanded joint tantalum tube (3) in a welding mode.
3. The expanded joint structure of the tube plate and the tantalum tube as claimed in claim 2, wherein the tube hole (2) comprises a counterbore (21) which is annular near one end of the tantalum plate (6), the inner diameter of the counterbore (21) is larger than that of the tube hole (2), the tantalum plate (6) is partially bent inwards and embedded in the counterbore (21), and the tantalum plate (6) is fixedly welded with the expanded tantalum tube (3).
4. A tube sheet and tantalum tube expansion joint as claimed in claim 3 wherein the portion of tantalum plate (6) in counterbore (21) is arcuate in cross section.
5. The tube plate and tantalum tube expansion joint structure as claimed in claim 2, 3 or 4, wherein the outer end of the expansion joint tantalum tube (3) is located between the outer end of the tantalum tube (5) and the tantalum plate (6), and the outer end of the tantalum tube (5) is arranged in a retracted mode relative to the outer end of the expansion joint tantalum tube (3).
6. The expanded joint structure of the tube plate and the tantalum tube as claimed in claim 2, 3 or 4, wherein the length of the expanded joint tantalum tube (3) is larger than that of the tube hole (2), one end of the expanded joint tantalum tube (3) close to the tantalum plate (6) is arranged in a retracted mode, and the other end of the expanded joint tantalum tube extends out of the tube hole (2).
7. An expanded joint structure of a tube plate and a tantalum tube as claimed in claim 1, 2, 3 or 4, wherein said tantalum tube (5) and said expanded tantalum tube (3) are in clearance fit.
8. The expanded joint structure of the tube plate and the tantalum tube as claimed in claim 1, 2, 3 or 4, wherein the wall thickness of the expanded tantalum tube (3) is 1.5-2.5mm, and the wall thickness of the tantalum tube (5) is 0.3-0.45 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220316213.5U CN216770321U (en) | 2022-02-15 | 2022-02-15 | Expansion joint structure of tube plate and tantalum tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220316213.5U CN216770321U (en) | 2022-02-15 | 2022-02-15 | Expansion joint structure of tube plate and tantalum tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216770321U true CN216770321U (en) | 2022-06-17 |
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ID=81955980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220316213.5U Active CN216770321U (en) | 2022-02-15 | 2022-02-15 | Expansion joint structure of tube plate and tantalum tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216770321U (en) |
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2022
- 2022-02-15 CN CN202220316213.5U patent/CN216770321U/en active Active
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