CN219828812U - Multistage venturi temperature reduction structure - Google Patents
Multistage venturi temperature reduction structure Download PDFInfo
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- CN219828812U CN219828812U CN202320407392.8U CN202320407392U CN219828812U CN 219828812 U CN219828812 U CN 219828812U CN 202320407392 U CN202320407392 U CN 202320407392U CN 219828812 U CN219828812 U CN 219828812U
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- temperature reduction
- reduction module
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- connecting pipe
- shell
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- 230000009467 reduction Effects 0.000 title claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims description 50
- 238000003466 welding Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 abstract description 17
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a multi-stage Venturi temperature reduction structure which comprises a primary temperature reduction module, a secondary temperature reduction module and a tertiary temperature reduction module, wherein the primary temperature reduction module, the secondary temperature reduction module and the tertiary temperature reduction module are communicated by water pipes from left to right in sequence; the first connecting pipe, the second connecting pipe and the third connecting pipe are communicated. The utility model adopts the design of serially connecting the multistage venturi attemperators to realize the attemperation work of ultra-high temperature steam, so that the steam temperature is steadily reduced, and the phenomena of deformation or cracking and the like caused by stress generated by rapid temperature change of a pipeline can be avoided; the multistage venturi attemperator is connected in series, so that steam and cooling water can be fully mixed, and the occurrence of water hammer phenomenon can be avoided.
Description
Technical Field
The utility model belongs to the technical field of venturi attemperators, and relates to a multistage venturi attemperation structure.
Background
The partial micro-flow ultrahigh-temperature steam attemperator directly obtains stable and controllable steam through one-time cooling, however, the water quantity sprayed by the attemperator is easily caused to be overlarge, and under the working condition of micro-flow, the steam is incompletely mixed with cooling water, so that the water hammer phenomenon is easily caused; the temperature difference between the front and the back of the desuperheater is large, and the pipeline is easily affected by stress to generate deformation, cracking and other phenomena.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, solve the problems that a micro-flow ultrahigh-temperature steam attemperator is easy to generate a water hammer phenomenon and a pipeline is easy to be affected by stress, and provide a multistage venturi attemperation structure.
In order to achieve the above purpose, the following technical scheme is adopted:
the multistage venturi temperature reduction structure comprises a first-stage temperature reduction module, a second-stage temperature reduction module and a third-stage temperature reduction module, wherein the first-stage temperature reduction module, the second-stage temperature reduction module and the third-stage temperature reduction module are communicated by water pipes from left to right in sequence; the first connecting pipe, the second connecting pipe and the third connecting pipe are communicated with the connecting pipe;
the first-stage temperature reduction module comprises a first shell, a first spray head is arranged in the first shell, an inclined spray hole is formed in the first spray head, and the inclined spray hole is communicated with an inner hole of the first spray head; the second-stage temperature reduction module comprises a second shell, a second spray head is arranged in the second shell, a first annular groove is formed in the second spray head, a step spray hole is formed in one end of the first annular groove, and the lower end of the step spray hole is communicated with an inner hole of the second spray head; the three-stage temperature reduction module and the two-stage temperature reduction module have the same structure.
Preferably, a first mounting hole is formed in the first shell, the first mounting hole is a threaded hole, and the first spray head is screwed in the first mounting hole.
Preferably, a step hole communicated with the first mounting hole is formed in the first shell, one end of the first spray head is matched with the step hole to form a first annular flow passage, and the first annular flow passage is communicated with the inclined spray hole.
Preferably, a first runner hole communicated with the step hole is formed in the first shell.
Preferably, a second mounting hole is formed in the second shell, the second spray head is mounted in the second mounting hole, a second annular groove is formed in the second shell, and the second annular groove is matched with the first annular groove to form a second annular flow channel.
Preferably, a second runner hole communicated with the second mounting hole is formed in the second shell.
Preferably, the primary temperature reduction module, the secondary temperature reduction module, the tertiary temperature reduction module and the water pipe are fixed by welding respectively.
Compared with the prior art, the utility model has the following advantages:
the utility model adopts the design of serially connecting the multistage venturi attemperators to realize the attemperation work of ultra-high temperature steam, so that the steam temperature is steadily reduced, and the phenomena of deformation or cracking and the like caused by stress generated by rapid temperature change of a pipeline can be avoided; the multistage venturi attemperator is connected in series, so that steam and cooling water can be fully mixed, and the occurrence of water hammer phenomenon can be avoided.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic diagram of a first-stage attemperation module according to the present utility model.
Fig. 3 is a schematic view of a first housing of the present utility model.
FIG. 4 is a schematic diagram of a two-stage attemperation module according to the present utility model.
Fig. 5 is a schematic view of a second housing of the present utility model.
Fig. 6 is a schematic view of a second showerhead according to the present utility model.
In the figure: 1. a primary temperature reducing module; 2. a secondary temperature reduction module; 3. a three-stage temperature reduction module; 4. a water pipe; 5. a first connection pipe; 6. a second connection pipe; 7. a third connection pipe; 8. a connecting pipe; 9. a first housing; 10. a first nozzle; 11. oblique spray holes; 12. an inner hole of the first nozzle; 13. a second housing; 14. a first annular groove; 15. step type spray hole; 16. a first mounting hole; 17. a step hole; 18. a first annular flow passage; 19. a first flow passage hole; 20. a second mounting hole; 21. a second annular groove; 22. a second annular flow passage; 23. an inner hole of the second nozzle; 24. a second flow passage hole; 25. and a second nozzle.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in fig. 1-6, a multi-stage venturi temperature reducing structure comprises a primary temperature reducing module 1, a secondary temperature reducing module 2 and a tertiary temperature reducing module 3, wherein the primary temperature reducing module 1, the secondary temperature reducing module 2 and the tertiary temperature reducing module 3 are communicated with each other by a water pipe 4 from left to right in sequence, and high-temperature steam can sequentially pass through the primary temperature reducing module 1, the secondary temperature reducing module 2 and the tertiary temperature reducing module 3 and then enter an external steam pipeline;
the first connecting pipe 5 is arranged on the first-stage temperature reduction module 1, the second connecting pipe 6 is arranged on the second-stage temperature reduction module 2, the third connecting pipe 7 is arranged on the third-stage temperature reduction module 3, the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7 are communicated with the connecting pipeline 8, the connecting pipeline 8 is communicated with an external cooling water pipeline, cooling water can enter the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7 through the connecting pipeline 8, and then cooling water can enter the first-stage temperature reduction module 1, the second-stage temperature reduction module 2 and the third-stage temperature reduction module 3 respectively;
the primary temperature reduction module 1 comprises a first shell 9, a first spray head 10 is arranged in the first shell 9, an inclined spray hole 11 is formed in the first spray head 10, and the inclined spray hole 11 is communicated with an inner hole 12 of the first spray head; after cooling water enters the first shell 9, the cooling water can be sprayed and atomized through the inclined spray holes 11, and when high-temperature steam passes through the inner holes 12 of the first spray head, the cooling water can be mixed with the cooling water mist for the first time;
the secondary temperature reduction module 2 comprises a second shell 13, a second spray head 25 is arranged in the second shell 13, a first annular groove 14 is formed in the second spray head 25, a step spray hole 15 is formed in one end of the first annular groove 14, the lower end of the step spray hole 15 is communicated with an inner hole 23 of the second spray head, cooling water can be sprayed out of the step spray hole 15 for atomization after entering the second shell 13, and high-temperature steam can be mixed with cooling water mist for second temperature reduction when passing through the inner hole 23 of the second spray head; the three-stage temperature reduction module 3 and the two-stage temperature reduction module 2 have the same structure; the high-temperature steam subjected to secondary cooling can be subjected to third cooling.
Further, a first mounting hole 16 is provided in the first housing 9, the first mounting hole 16 is a threaded hole, and the first nozzle 10 is screwed into the first mounting hole 16; the first spray head 10 equipped with the screw connection is easy to install and detach.
Further, a step hole 17 communicated with the first mounting hole 16 is formed in the first housing 9, one end of the first nozzle 10 is matched with the step hole 17 to form a first annular flow passage 18, and the first annular flow passage 18 is communicated with the inclined spray hole 11; the first connecting pipe 5, the annular flow passage 18, the inclined spray hole 11 and the first spray nozzle inner hole 12 can be mutually communicated, so that cooling water can be conveniently atomized and mixed with high-temperature steam.
Further, a first runner hole 19 communicating with the step hole 17 is formed in the first housing 9, and the first runner hole 19 is used for passing high-temperature steam.
Further, a second mounting hole 20 is formed in the second housing 13, the second nozzle 25 is mounted in the second mounting hole 20, a second annular groove 21 is formed in the second housing 13, the second annular groove 21 is matched with the first annular groove 14 to form a second annular flow passage 22, and the second connecting pipe 6, the second annular flow passage 22, the step-type nozzle 15 and the second nozzle inner hole 23 can be mutually communicated, so that cooling water can be atomized and mixed with high-temperature steam to perform secondary cooling.
Further, a second flow passage hole 24 is formed in the second housing 13 and is communicated with the second mounting hole 20, and the second flow passage hole 24 is used for passing high-temperature steam after primary cooling.
Further, the primary temperature reduction module 1, the secondary temperature reduction module 2, the tertiary temperature reduction module 3 and the water pipe 4 are respectively fixed by welding.
Working principle: when the utility model is used, the first-stage temperature reduction module 1, the second-stage temperature reduction module 2 and the third-stage temperature reduction module 3 are connected in series by utilizing the water pipe 4, then the first connecting pipe 5, the second connecting pipe 6, the third connecting pipe 7 and the connecting pipe 8 are respectively connected, and then the connecting pipe 8 is connected with an external cooling water pipeline; then the first-stage temperature reduction module 1 is connected with a high-temperature steam output pipeline, and the third-stage temperature reduction module 3 is connected with the high-temperature steam input pipeline;
in the working process, high-temperature steam firstly enters the inner hole 12 of the first nozzle, meanwhile, cooling water enters the first shell 9 through the first connecting pipe 5, then enters the inclined spray hole 11 after passing through the first annular pipeline 18, is sprayed and atomized, and is mixed with the high-temperature steam after being atomized to perform first cooling; then high-temperature steam enters an inner hole 23 of the second spray head through the water pipe 4, cooling water enters the second shell 13 through the second connecting pipe 6, enters the stepped spray hole 15 through the second annular flow passage 22, is sprayed and atomized, is mixed with the high-temperature steam, is subjected to second cooling, and the three-stage temperature reduction module 3 and the two-stage temperature reduction module 2 are identical in structure, and is subjected to third cooling, and then the high-temperature steam enters a high-temperature steam input pipeline; the multistage venturi attemperators are connected in series to realize stable cooling of high-temperature steam and avoid water hammer.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.
Claims (7)
1. The utility model provides a multistage venturi temperature reduction structure, includes one-level temperature reduction module (1), second grade temperature reduction module (2) and tertiary temperature reduction module (3), characterized by: the primary temperature reduction module (1), the secondary temperature reduction module (2) and the tertiary temperature reduction module (3) are communicated with each other by water pipes (4) from left to right in sequence; a first connecting pipe (5) is arranged on the primary temperature reduction module (1), a second connecting pipe (6) is arranged on the secondary temperature reduction module (2), a third connecting pipe (7) is arranged on the tertiary temperature reduction module (3), and the first connecting pipe (5), the second connecting pipe (6) and the third connecting pipe (7) are communicated with the connecting pipe (8);
the primary temperature reduction module (1) comprises a first shell (9), a first spray head (10) is arranged in the first shell (9), an inclined spray hole (11) is formed in the first spray head (10), and the inclined spray hole (11) is communicated with an inner hole (12) of the first spray head; the secondary temperature reduction module (2) comprises a second shell (13), a second spray head (25) is arranged in the second shell (13), a first annular groove (14) is formed in the second spray head (25), a stepped spray hole (15) is formed in one end of the first annular groove (14), and the lower end of the stepped spray hole (15) is communicated with an inner hole (23) of the second spray head; the three-level temperature reduction module (3) and the two-level temperature reduction module (2) have the same structure.
2. The multi-stage venturi temperature reducing structure according to claim 1, wherein: the novel shower nozzle is characterized in that a first mounting hole (16) is formed in the first shell (9), the first mounting hole (16) is a threaded hole, and the first shower nozzle (10) is in threaded connection with the first mounting hole (16).
3. The multi-stage venturi temperature reducing structure according to claim 2, wherein: the first shell (9) is internally provided with a step hole (17) communicated with the first mounting hole (16), one end of the first spray head (10) is matched with the step hole (17) to form a first annular flow passage (18), and the first annular flow passage (18) is communicated with the inclined spray hole (11).
4. A multi-stage venturi temperature reducing structure according to claim 3, wherein: a first runner hole (19) communicated with the step hole (17) is formed in the first shell (9).
5. The multi-stage venturi temperature reducing structure according to claim 1, wherein: a second mounting hole (20) is formed in the second shell (13), the second spray head (25) is mounted in the second mounting hole (20), a second annular groove (21) is formed in the second shell (13), and the second annular groove (21) is matched with the first annular groove (14) to form a second annular flow passage (22).
6. The multi-stage venturi temperature reducing structure according to claim 5, wherein: a second runner hole (24) communicated with the second mounting hole (20) is formed in the second shell (13).
7. The multi-stage venturi temperature reducing structure according to claim 1, wherein: the primary temperature reduction module (1), the secondary temperature reduction module (2), the tertiary temperature reduction module (3) and the water pipe (4) are fixed by welding respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320407392.8U CN219828812U (en) | 2023-03-07 | 2023-03-07 | Multistage venturi temperature reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320407392.8U CN219828812U (en) | 2023-03-07 | 2023-03-07 | Multistage venturi temperature reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219828812U true CN219828812U (en) | 2023-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320407392.8U Active CN219828812U (en) | 2023-03-07 | 2023-03-07 | Multistage venturi temperature reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219828812U (en) |
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2023
- 2023-03-07 CN CN202320407392.8U patent/CN219828812U/en active Active
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