CN220134315U - Combined air extractor adopting tube plate type cooling structure - Google Patents
Combined air extractor adopting tube plate type cooling structure Download PDFInfo
- Publication number
- CN220134315U CN220134315U CN202321576321.7U CN202321576321U CN220134315U CN 220134315 U CN220134315 U CN 220134315U CN 202321576321 U CN202321576321 U CN 202321576321U CN 220134315 U CN220134315 U CN 220134315U
- Authority
- CN
- China
- Prior art keywords
- air extractor
- tube
- steam
- tube plate
- tube bundle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims description 4
- 210000004907 gland Anatomy 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a combined air extractor adopting a tube plate type cooling structure, which comprises an air inlet assembly, a multi-stage steam jet air extractor, a steam seal air extractor, a shell, a water chamber and a tube bundle structure, wherein the shell is internally provided with a plurality of water chambers and tube bundle structures corresponding to the multi-stage steam jet air extractor and the steam seal air extractor, the water chambers and the tube bundle structures adopt straight tubes distributed on a tube plate, and two ends of the water chambers are fixedly connected with the water chamber to form the tube plate type heat exchanger. The structure of the utility model can improve the space utilization rate of the cooling tube bundle in the air extractor, reduce the overall size of the air extractor, and effectively improve the rigidity and reliability of the tube bundle in the air extractor.
Description
Technical Field
The utility model relates to an air extracting and condensing device for a marine vapor seal system, in particular to a combined air extractor adopting a tube plate type cooling structure.
Background
The air leaked in the vapor seal system and the condenser needs to be pumped out through an air extractor. The steam seal system and the condenser need to be cooled after the steam and air are extracted by the steam jet air extractor, condensate water is recovered, and the cooled air is discharged back to the atmosphere.
The combined air extractor adopted at present mostly adopts a U-shaped pipe air extractor. The outside of the U-shaped pipe is a mixture of steam and air, and the inside of the U-shaped pipe is cooling water. The cooling water enters and exits through the water chamber at the lower part of the combined air extractor.
The combined integral structure and the internal tube bundle structure are shown in fig. 1 and 2, the vapor seal air extractor is arranged at the upper part of the combined air extractor, and the combined integral structure and the internal tube bundle structure are respectively a primary vapor jet air extractor 2, a secondary vapor jet air extractor 3 and a vapor seal vapor jet air extractor 4, and the three coolers are respectively a primary vapor extractor cooler 2, a secondary vapor extractor cooler 3 and a vapor seal air extractor 4 from left to right.
The non-condensing gas and a part of exhaust steam in the condenser are extracted by the primary steam jet air extractor 23 and then enter the primary cooler, part of steam is condensed, the residual steam and the non-condensing gas are pumped into the secondary cooler by the secondary air extractor 2, and the exhaust steam is condensed.
The direction of flow inside the cooler is shown in figure 3. The inner tube bundle of the cooler is of a U-shaped tube structure, as shown in fig. 2 and 4, and is divided into 4 flow paths, and the flow direction of the flow paths is shown in fig. 3. After entering the water chamber 7 through the cooling water inlet on the water chamber, the cooling water flows from left to right to the right of the water chamber 7 through the first U-shaped flow tube 6-1. After flowing through the cavity in the water chamber 7, the water flows from right to left to the left of the water chamber 7 through the second flow U-shaped pipe 6-1, and flows out of the cooling water outlet on the water chamber 7 after flowing through four flows in a reciprocating manner.
Because the U-shaped tube structure is adopted, the air extractor needs to flow out enough U-shaped tube bending space, so that the close-packed effect of the tube bundles cannot be achieved, the U-shaped tubes are of a structure with one side fixed, vibration is easy to generate when the tube bundles are impacted by the sucked airflow, and certain challenges are brought to the reliability and the internal structural strength of the combined air extractor.
Disclosure of Invention
The utility model aims to provide a combined air extractor adopting a tube plate type cooling structure, so that the space utilization rate of an internal cooling tube bundle of the traditional combined air extractor is improved, and the reliability and the internal structural strength of the air extractor are improved.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides an adopt tube sheet cooling structure's combination formula air extractor, includes steam inlet subassembly, multistage steam jet air extractor, gland seal air extractor, casing, hydroecium and tube bank structure, the inside hydroecium and the tube bank structure that corresponds multistage steam jet air extractor, gland seal air extractor that are equipped with of casing, hydroecium and tube bank structure adopt the tube sheet to distribute the straight tube, both ends fixed connection hydroecium constitutes tube sheet heat exchanger.
Further, the straight pipes are arranged in a matrix on the tube plate, so that the area on the tube plate can be used to the greatest extent.
Further, the steam inlet component is respectively connected with the primary steam jet air extractor and the secondary steam jet air extractor.
Furthermore, the two sides of the tube-plate heat exchanger are fixed, so that the tube-plate heat exchanger has better rigidity when the tube bundle is impacted by the steam and air mixture.
The beneficial effects of the utility model are as follows:
the structure of the utility model can improve the space utilization rate of the cooling tube bundle in the air extractor, reduce the overall size of the air extractor, and effectively improve the rigidity and reliability of the tube bundle in the air extractor.
Drawings
FIG. 1 is a schematic diagram of a prior art modular ejector;
FIG. 2 is a schematic illustration of a prior U-tube bundle and water chamber arrangement;
FIG. 3 shows the flow direction of cooling water in a conventional U-tube and a water chamber
FIG. 4 is a prior art U-tube distribution on tube sheet
FIG. 5 is a schematic view of a modular ejector employing a tube sheet cooling structure in accordance with the present utility model;
FIG. 6 is a schematic view of the distribution of straight tubes on a tube sheet of the present utility model;
fig. 7 is a schematic view of the tube bundle and water chamber arrangement of the present utility model.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in figures 5,6 and 7, the combined air extractor adopting the tube plate type cooling structure can improve the utilization rate of an internal cooling tube bundle of the combined air extractor. The steam seal type steam turbine mainly comprises a steam inlet assembly 1, a primary steam jet air extractor 2, a secondary steam jet air extractor 3, a steam seal air extractor 4, a shell 5, a water chamber and a tube bundle structure 6. The shell 5 is internally provided with a water chamber and a tube bundle structure 6 corresponding to the primary steam jet air extractor 2, the secondary steam jet air extractor 3 and the steam seal air extractor 4, the water chamber and the tube bundle structure 6 adopt tube plates to distribute straight tubes 6-2, and two ends of the water chamber and the tube bundle structure are fixedly connected with the water chamber 7 to form a tube plate type heat exchanger.
The straight tube distribution pattern on the tube sheet is shown in fig. 6, and compared with the distribution pattern of the U-shaped tube in fig. 4, the straight tube distribution can be observed to use the area on the tube sheet to a greater extent. The straight pipe 6-2 is used without considering the influence of the elbow size on the arrangement of the pipe bundle, and the space of the bending area of the U-shaped pipe 6-1 can be fully utilized.
Fig. 7 shows a schematic view of the arrangement of the tube bundle and the water chamber. Comparing the U-tube profile shown in fig. 2 can observe that the U-tubes 6-1 are single-sided cantilever fixed, while the tube-sheet heat exchanger is double-sided fixed, so that the tube-sheet heat exchanger has better rigidity when the tube bundle is impacted by the steam and air mixture. The tube bundle of the air extractor is more reliable.
During installation, the shell is fixed on the installation underframe, the tube bundles and the tube plates are installed on the shell, and the water chambers are respectively installed above and below the shell. The steam jet air extractor and the steam inlet component are all arranged above the shell.
Claims (4)
1. The utility model provides an adopt tube sheet cooling structure's combination formula air extractor, includes admission subassembly, multistage vapour ejector, gland seal air extractor, casing, hydroecium and tube bank structure, its characterized in that: the shell is internally provided with a plurality of water chambers and tube bundle structures corresponding to the multistage steam jet air extractors and the steam seal air extractors, the water chambers and the tube bundle structures adopt straight tubes distributed on tube plates, and two ends of the straight tubes are fixedly connected with the water chambers to form the tube plate type heat exchanger.
2. The combination air extractor with tube sheet cooling structure of claim 1, wherein: the straight pipes are arranged in a matrix on the tube plate, so that the area on the tube plate can be used to the greatest extent.
3. The combination air extractor with tube sheet cooling structure of claim 1, wherein: the steam inlet component is respectively connected with the primary steam jet air extractor and the secondary steam jet air extractor.
4. The combination air extractor with tube sheet cooling structure of claim 1, wherein: the tube plate heat exchanger is fixed on two sides, so that the tube plate heat exchanger has better rigidity when the tube bundle is impacted by steam and air mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321576321.7U CN220134315U (en) | 2023-06-19 | 2023-06-19 | Combined air extractor adopting tube plate type cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321576321.7U CN220134315U (en) | 2023-06-19 | 2023-06-19 | Combined air extractor adopting tube plate type cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134315U true CN220134315U (en) | 2023-12-05 |
Family
ID=88963026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321576321.7U Active CN220134315U (en) | 2023-06-19 | 2023-06-19 | Combined air extractor adopting tube plate type cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134315U (en) |
-
2023
- 2023-06-19 CN CN202321576321.7U patent/CN220134315U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106323026A (en) | Horizontal axial exhaust condenser | |
| CN111811289B (en) | Symmetrical nozzle condensing device | |
| JP5611019B2 (en) | Shell plate heat exchanger and power plant equipped with the same | |
| CN202993895U (en) | Steam exhaust cooler of high-water-side pressure steam-driving induced draft fan steam turbine | |
| CN214384461U (en) | Steam heat exchanger | |
| CN220134315U (en) | Combined air extractor adopting tube plate type cooling structure | |
| CN211625778U (en) | High-efficiency supercooling shell-tube condenser | |
| CN116816739A (en) | Combined air extractor adopting tube plate type cooling structure | |
| CN201837267U (en) | Shell-type stainless steel condenser with horizontal-type welding plates | |
| JP2024504846A (en) | steam heat exchanger | |
| CN212692611U (en) | Pressurized air waste heat recovery system and air heat exchanger thereof | |
| CN210268320U (en) | Plate pass shunting plate heat exchanger | |
| CN220853201U (en) | Lateral steam inlet condenser | |
| CN111442657A (en) | Low-pressure vacuum condenser | |
| CN108871006B (en) | Axial steam inlet condenser | |
| CN104713383B (en) | Single shell dual pressure condenser | |
| CN212378536U (en) | Low-pressure vacuum condenser | |
| CN214010013U (en) | Use one-flow condenser at high-order steam turbine set of arranging | |
| CN212620262U (en) | U-shaped small-diameter shell and tube heat exchanger for vortex machine set | |
| CN220728993U (en) | Hairpin heat exchanger for large medium-pressure secondary superheater | |
| CN219914043U (en) | Air cooler with multi-section steam inlet | |
| CN220471581U (en) | Waste heat recovery's steam generator | |
| CN218973263U (en) | Novel vacuum condenser | |
| CN209763006U (en) | Evaporator utilizing waste heat of blast furnace slag | |
| CN211926604U (en) | Combined type heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |