CN216144234U - Double-layer pipe plate structure - Google Patents
Double-layer pipe plate structure Download PDFInfo
- Publication number
- CN216144234U CN216144234U CN202121774087.XU CN202121774087U CN216144234U CN 216144234 U CN216144234 U CN 216144234U CN 202121774087 U CN202121774087 U CN 202121774087U CN 216144234 U CN216144234 U CN 216144234U
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- tube
- plate
- tube plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a double-layer tube plate structure which comprises a main tube plate, a secondary tube plate, sleeve tubes, a connecting cylinder, a tube bundle shell, a tube box shell, a cooling air inlet tube, a cooling air outlet tube and a heat exchange tube.
Description
Technical Field
The utility model relates to a double-layer tube plate structure, in particular to a double-layer tube plate structure of a high-temperature air preheater for a carbon black production device.
Background
The high-temperature air preheater has high working temperature, and the high-temperature side tube plate adopts a double-tube plate structure, so that cooling air is introduced between the double tube plates to reduce the working temperature of the tube plates. At present, two tube plates of a known double-tube plate structure are equal in thickness and are welded with sleeve pipes. Although the air is cooled inside the double-tube plate, the working temperature of the double-tube plate is still high, thermal stress generated by high temperature is accumulated in the double-tube plate structure, and the double-tube plate fails under the complex thermal stress working condition for a long time.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a double-layer tube plate structure which has the advantages that the thermal stress generated at high temperature is partially released, the level of the thermal stress of the double-tube plate is reduced, the service life of the double-tube plate is prolonged, and the service life of the whole equipment is prolonged.
The double-layer tube plate structure comprises a main tube plate, a secondary tube plate, sleeve tubes, a connecting cylinder, a tube bundle shell, a tube box shell, a cooling air inlet tube, a cooling air outlet tube and a heat exchange tube, and is an integral device, wherein the tube plate at one end is a round flat plate, the main tube plate and the secondary tube plate are parallel to each other and have a certain distance, the thickness of the secondary tube plate is smaller than that of the main tube plate, a plurality of tube holes which are perpendicular to the flat plate surface and penetrate through the main tube plate are formed in the same position of the main tube plate and the secondary tube plate, the sleeve tubes are tubes, the tube holes penetrating through the main tube plate and the secondary tube plate are connected with the main tube plate, a certain annular gap is reserved between the sleeve tubes and the secondary tube plate, one end of the heat exchange tube penetrates through the sleeve tubes and is connected with the sleeve tubes at one side of the sleeve tubes penetrating through the main tube plate, and the other end of the heat exchange tube is connected with the tube plate at the other end of the device.
When the double tube plates are in a high-temperature normal working condition, the sleeve pipes are not in contact with the secondary tube plates, the thermal deformation of the main tube plates and the sleeve pipes caused by high temperature is not limited by the secondary tube plates, and the thermal deformation of the secondary tube plates caused by high temperature is not limited by the sleeve pipes, so that the thermal stress of the double tube plates is partially released, the thermal stress level of the double tube plates is lower than that of the conventional known double tube plate structure, the service life of the double tube plates is prolonged, and the service life of the whole equipment in the high-temperature normal working condition is prolonged.
When the double-tube plate is in a high-temperature abnormal working condition, stress is possibly generated due to the fact that the sleeve tube is in contact with the secondary tube plate due to the fact that thermal deformation is large, the secondary tube plate is smaller than the main tube plate in thickness, the secondary tube plate is firstly deformed to absorb the stress, and therefore the main tube plate serving as a main bearing part is protected, the service life of the main tube plate is guaranteed, and the service life of the whole equipment under the high-temperature abnormal condition is further guaranteed.
Drawings
Embodiments of the utility model are described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
Fig. 1 shows a schematic diagram of the present invention. The utility model relates to a double-layer tube plate structure, which comprises a main tube plate, a secondary tube plate, sleeve tubes, a connecting cylinder, a tube bundle shell, a tube box shell, a cooling air inlet tube, a cooling air outlet tube and a heat exchange tube, and the specific implementation mode is as follows:
a double-layer tube plate structure is a structure of a tube plate at one end of the whole equipment.
The main tube plate 1 and the secondary tube plate 5 are both circular flat plates, the surfaces of the main tube plate 1 and the secondary tube plate 5 are parallel and have a certain distance, the thickness of the secondary tube plate 5 is smaller than that of the main tube plate 1, the same positions of the main tube plate 1 and the secondary tube plate 5 are provided with a plurality of tube holes which are perpendicular to the flat plate surfaces and penetrate through, the sleeve tube 6 is a tube, the tube holes penetrating through the main tube plate 1 and the secondary tube plate 5 are connected with the main tube plate 1, a certain annular gap is reserved between the main tube plate 1 and the secondary tube plate 5, the heat exchange tube 7 is a tube and penetrates through the sleeve tube 6, one end of the sleeve tube 6 is connected with the sleeve tube 6 on one side penetrating through the main tube plate 1, and the other end of the sleeve tube is connected with the tube plate at the other end of the device.
The connecting cylinder 4 is a cylinder, one end of which is connected with the plate surface of the main pipe plate 1, and the other end of which is connected with the plate surface of the secondary pipe plate 5, and all the sleeves 6 are wrapped in the cylinder. The space surrounded by the connecting cylinder 4, the main tube plate 1 and the secondary tube plate 5 and the outer side of the sleeve are cooling air flowing spaces.
The two sides of the main tube plate 1 are respectively connected with a tube bundle shell 2 and a tube box shell 3, the tube bundle shell 2 and the tube box shell 3 are cylinders, the tube bundle shell 2 is positioned at one side of the tube bundle, the secondary tube plate 5 and all the heat exchange tubes 7 are wrapped in the cylinders of the tube bundle shell, the tube box shell 3 is positioned at the other side, and the tube heads of all the heat exchange tubes 7 and the sleeve tubes 6 are wrapped in the cylinders of the tube bundle shell.
The tube bundle shell 2 and the connecting cylinder 4 are provided with one or more holes in the same circumferential direction, and the cooling air inlet pipe 9 is a pipe, passes through the holes and is connected with the tube bundle shell 2 and the connecting cylinder 4 respectively. The secondary tube plate 5 is provided with one or more holes extending through the plate surface perpendicularly, and the cooling air outlet pipe 8 is a pipe extending through the holes and connected to the secondary tube plate 5. The cooling air enters the cooling air flowing space between the double tube plates from the cooling air inlet pipe 9 and then flows out from the cooling air outlet pipe 8.
Claims (5)
1. The utility model provides a double-deck tube sheet structure, includes main tube sheet, inferior tube sheet, sleeve pipe, connecting cylinder, tube bank shell, pipe case shell, cooling air import pipe, cooling air outlet pipe and heat exchange tube, is the structure of one end tube sheet among them of whole equipment, its characterized in that: the main tube plate and the secondary tube plate are both circular flat plates, the surfaces of the main tube plate and the secondary tube plate are parallel and have a certain distance, and the thickness of the secondary tube plate is smaller than that of the main tube plate.
2. A double tube sheet structure according to claim 1 wherein: the same positions of the main tube plate and the secondary tube plate are provided with a plurality of tube holes which are vertical to the plane and penetrate through the plane, and the sleeve tubes are tubes, penetrate through the tube holes of the main tube plate and the secondary tube plate, are connected with the main tube plate and keep a certain annular gap with the secondary tube plate.
3. A double tube sheet structure according to claim 1 wherein: the connecting cylinder is a cylinder, one end of the connecting cylinder is connected with the plate surface of the main tube plate, the other end of the connecting cylinder is connected with the plate surface of the secondary tube plate, and all sleeve tubes are wrapped in the cylinder.
4. A double tube sheet structure according to claim 1 wherein: the two sides of the main tube plate are respectively connected with the tube bundle shell and the tube box shell, the tube bundle shell and the tube box shell are cylinders, the tube bundle shell is positioned at one side of the tube bundle, the secondary tube plate and all the heat exchange tubes are wrapped in the cylinders of the tube bundle shell, the tube box shell is positioned at the other side of the tube box shell, and all the heat exchange tubes and sleeve tube heads are wrapped in the cylinders of the tube bundle shell.
5. A double tube sheet structure according to claim 1 wherein: the tube bundle shell and the connecting cylinder are provided with one or more holes in the same circumferential direction, the cooling air inlet pipe is a pipe and penetrates through the holes to be respectively connected with the tube bundle shell and the connecting cylinder, the secondary tube plate is provided with one or more holes which are vertical to the flat plate surface and penetrate through the secondary tube plate, and the cooling air outlet pipe is a pipe and penetrates through the holes to be connected with the secondary tube plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121774087.XU CN216144234U (en) | 2021-08-02 | 2021-08-02 | Double-layer pipe plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121774087.XU CN216144234U (en) | 2021-08-02 | 2021-08-02 | Double-layer pipe plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216144234U true CN216144234U (en) | 2022-03-29 |
Family
ID=80803515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121774087.XU Active CN216144234U (en) | 2021-08-02 | 2021-08-02 | Double-layer pipe plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216144234U (en) |
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2021
- 2021-08-02 CN CN202121774087.XU patent/CN216144234U/en active Active
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