CN211903842U - Double-casing double-tube-plate shell-and-tube heat exchanger - Google Patents
Double-casing double-tube-plate shell-and-tube heat exchanger Download PDFInfo
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- CN211903842U CN211903842U CN202020402577.6U CN202020402577U CN211903842U CN 211903842 U CN211903842 U CN 211903842U CN 202020402577 U CN202020402577 U CN 202020402577U CN 211903842 U CN211903842 U CN 211903842U
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Abstract
The utility model relates to a double cannula double tube sheet shell and tube type heat exchanger belongs to shell and tube type heat exchanger technical field. The heat exchanger comprises a shell (1), wherein the shell (1) is cylindrical, tube plate devices (2) are arranged at two ends of the shell (1), pressure sensors (3) are arranged at the tops of the tube plate devices (2), tube boxes (4) are arranged at two ends of the tube plate devices (2), an outer heat exchange tube (5) is arranged in the shell (1), and an inner heat exchange tube (6) is arranged in the outer heat exchange tube (5); the outer surface of the inner heat exchange tube (6) is provided with a drainage channel (7), and the drainage channel (7) is a crossed net-shaped groove. The utility model discloses can effectually cause in the joint of tube sheet and heat exchange tube or the breakage of heat exchange tube that the medium is each other revealing and avoid causing serious incident and economic loss such as system shutdown, medium pollution, even explosion when becoming invalid in tube side and shell side.
Description
Technical Field
The utility model relates to a shell and tube type heat exchanger technical field, in particular to double cannula double tube sheet shell and tube type heat exchanger.
Background
At present, in the industries of electric power, chemical industry, food and the like, tube-plate heat exchangers used for cooling liquid media are all traditional products, the tube-plate heat exchangers are composed of a tube side and a shell side, and heat exchange of media with different temperatures in the tube side and the shell side is realized through heat transfer of heat exchange tubes.
As described in the relevant information, among the quality problems of the heat exchanger, 70 to 80% of the tube bundles are failure due to leakage of media between the tube side and the shell side caused by breakage of the tube plate and the joint of the heat exchange tube or the heat exchange tube, and serious safety accidents or economic losses such as system shutdown, media pollution, even explosion caused by leakage of different media between the tube side and the shell side.
Chinese patent with patent publication No. CN207779174U discloses a tube-plate heat exchanger, and this utility model discloses a be provided with thermometer and manometer respectively in coolant import and coolant exit, can detect coolant's temperature and pressure differential to eliminated the potential safety hazard, but can not effectually cause the leakage of medium each other and avoid causing serious incident such as system shutdown, medium pollution, even explosion in tube side and shell side in the joint of tube sheet and heat exchange tube or the breakage of heat exchange tube.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of proposing among the above-mentioned background problem, provide a double cannula double tube board shell and tube type heat exchanger, can effectually cause the medium in the joint of tube sheet and heat exchange tube or the breakage of heat exchange tube to reveal each other and avoid causing serious incident and economic loss such as system shut down, medium pollution, even explosion when becoming invalid in tube side and shell side.
The purpose of the utility model is realized like this: a double-casing double-tube-plate shell-and-tube heat exchanger comprises a shell, wherein the shell is cylindrical, tube plate devices are arranged at two ends of the shell, a pressure sensor is arranged at the top of each tube plate device, tube boxes are arranged at two ends of each tube plate device, a plurality of outer heat exchange tubes are arranged in the shell, and inner heat exchange tubes are arranged in the outer heat exchange tubes;
the outer surface of the inner heat exchange tube is provided with a drainage channel which is a crossed net-shaped groove;
the tube plate device comprises an outer tube plate and an inner tube plate, the outer tube plate is of a U-shaped structure, the outer tube plate is connected with the inner tube plate, a hollow structure is formed inside the outer tube plate, the hollow structure is a sealed detection cavity, and the sealed detection cavity is connected with a pressure sensor at the top of the tube plate device;
the outer heat exchange tube is connected with the inner tube plate, and the inner heat exchange tube is connected with the outer tube plate;
the length of the outer heat exchange tube is smaller than that of the inner heat exchange tube;
the groove is a V-shaped groove.
Compared with the prior art, the utility model has the advantages of it is following:
through the earial drainage passageway that interior tube sheet surface set up, when inner heat exchange tube or outer heat exchange tube had the fracture, the medium can get into the sealed chamber that detects at both ends through earial drainage passageway, and the pressure sensor that tube sheet device top set up can carry out real-time alarm to the pressure change that sealed detection intracavity produced to avoid the leakage of heat exchange tube and tube sheet joint and make the accident and the economic loss that the collude emergence of two kinds of media of tube side and shell side.
Drawings
FIG. 1 is a schematic perspective view of a double-tube plate shell-and-tube heat exchanger of the present invention;
FIG. 2 is an enlarged schematic view of the inner heat exchange tube of the present invention;
FIG. 3 is an enlarged schematic view of the bleed passage of the present invention;
wherein: the device comprises a shell 1, a tube plate device 2, a pressure sensor 3, a tube box 4, an outer heat exchange tube 5, an inner heat exchange tube 6, a discharge channel 7, an outer tube plate 8 and an inner tube plate 9.
Detailed Description
The invention is described below with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 to 3, a double-casing double-tube-plate shell-and-tube heat exchanger includes a shell 1, wherein the shell 1 is cylindrical, tube plate devices 2 are respectively disposed at two ends of the shell 1, a pressure sensor 3 is disposed at the top of each tube plate device 2, tube boxes 4 are respectively disposed at two ends of each tube plate device 2, a plurality of outer heat exchange tubes 5 are disposed in the shell 1, and inner heat exchange tubes 6 are disposed in the plurality of outer heat exchange tubes 5;
the outer surface of the inner heat exchange tube 6 is provided with a drainage channel 7, and the drainage channel 7 is a crossed net-shaped groove;
the tube plate device 2 comprises an outer tube plate 8 and an inner tube plate 9, the outer tube plate 8 is of a U-shaped structure, the outer tube plate 8 is connected with the inner tube plate 9, a hollow structure is formed inside the outer tube plate 8, the hollow structure is a sealed detection cavity, and the sealed detection cavity is connected with the pressure sensor 3 at the top of the tube plate device 2;
the outer heat exchange tube 5 is connected with an inner tube plate 9 through expansion joint or expansion welding, and the inner heat exchange tube 6 is connected with an outer tube plate 8 through expansion joint or expansion welding;
the length of the outer heat exchange tube 5 is less than that of the inner heat exchange tube 6;
the groove is a V-shaped groove.
In this embodiment, through the drainage channel 7 disposed on the outer surface of the inner heat exchange tube 6, when the inner heat exchange tube 6 or the outer heat exchange tube 5 is broken, the medium will enter the sealed detection cavities at both ends through the drainage channel 7, and the pressure sensor 3 disposed on the top of the tube plate device 2 will alarm the pressure change generated in the sealed detection cavities in real time, thereby avoiding the accident and economic loss caused by the communication between the two mediums of the tube side and the shell side due to the leakage of the heat exchange tube and the tube plate joint.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a double-pipe double-tube sheet shell and tube heat exchanger, includes casing (1), casing (1) is cylindric, its characterized in that: the heat exchanger is characterized in that tube plate devices (2) are arranged at two ends of the shell (1), pressure sensors (3) are arranged at the tops of the tube plate devices (2), tube boxes (4) are arranged at two ends of the tube plate devices (2), a plurality of outer heat exchange tubes (5) are arranged in the shell (1), and inner heat exchange tubes (6) are arranged in the outer heat exchange tubes (5);
the outer surface of the inner heat exchange tube (6) is provided with a drainage channel (7), and the drainage channel (7) is a crossed net-shaped groove.
2. The double-tube plate shell-and-tube heat exchanger according to claim 1, characterized in that: the tube plate device (2) comprises an outer tube plate (8) and an inner tube plate (9), the outer tube plate (8) is of a U-shaped structure, the outer tube plate (8) is connected with the inner tube plate (9), a hollow structure is formed inside the outer tube plate, the hollow structure is a sealed detection cavity, and the sealed detection cavity is connected with a pressure sensor (3) at the top of the tube plate device (2).
3. The double-tube plate shell-and-tube heat exchanger according to claim 1, characterized in that: the outer heat exchange tube (5) is connected with an inner tube plate (9), and the inner heat exchange tube (6) is connected with an outer tube plate (8).
4. A double-tube plate shell-and-tube heat exchanger according to claim 3, characterized in that: the length of the outer heat exchange tube (5) is less than that of the inner heat exchange tube (6).
5. The double-tube plate shell-and-tube heat exchanger according to claim 1, characterized in that: the groove is a V-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020402577.6U CN211903842U (en) | 2020-03-26 | 2020-03-26 | Double-casing double-tube-plate shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020402577.6U CN211903842U (en) | 2020-03-26 | 2020-03-26 | Double-casing double-tube-plate shell-and-tube heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN211903842U true CN211903842U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020402577.6U Active CN211903842U (en) | 2020-03-26 | 2020-03-26 | Double-casing double-tube-plate shell-and-tube heat exchanger |
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| CN (1) | CN211903842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115574649A (en) * | 2022-11-24 | 2023-01-06 | 四川科新机电股份有限公司 | Double-tube-plate heat exchanger and machining and forming method thereof |
-
2020
- 2020-03-26 CN CN202020402577.6U patent/CN211903842U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115574649A (en) * | 2022-11-24 | 2023-01-06 | 四川科新机电股份有限公司 | Double-tube-plate heat exchanger and machining and forming method thereof |
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