CN112013374A - Vertical MSR structure of marine floating pile - Google Patents
Vertical MSR structure of marine floating pile Download PDFInfo
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- CN112013374A CN112013374A CN202010921562.5A CN202010921562A CN112013374A CN 112013374 A CN112013374 A CN 112013374A CN 202010921562 A CN202010921562 A CN 202010921562A CN 112013374 A CN112013374 A CN 112013374A
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- steam
- water separation
- reheater
- vertical
- shell
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/26—Steam-separating arrangements
- F22B37/30—Steam-separating arrangements using impingement against baffle separators
- F22B37/306—Steam-separating arrangements using impingement against baffle separators specially adapted for steam generators of nuclear power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A vertical MSR structure of a marine floating pile solves the problem that the existing MSR structure occupies a large area and is not suitable for the marine floating pile, and belongs to the technical field of nuclear power. The invention comprises a vertical shell, a steam-water separation device and a reheater; the steam-water separation device and the reheater are arranged in the vertical shell and are sequentially arranged from bottom to top along the vertical shell. The reheater comprises a heat exchange tube bundle, a baffle plate, a heating steam inlet connecting pipe and a reheater drainage outlet connecting pipe; the heating steam inlet connecting pipe and the reheater drain outlet connecting pipe are respectively arranged at the upper part and the lower part of the heat exchange tube bundle and are communicated with the heat exchange tube bundle, a plurality of baffle plates are uniformly distributed around the heat exchange tube bundle, and a circulating steam outlet is arranged at the upper part of the vertical shell. The reheater and the steam-water separation assembly are arranged up and down, the occupied area is small, the reheater and the steam-water separation assembly can be applied to narrow spaces, and the flexibility of the overall arrangement of the offshore floating pile unit is improved. The baffle plates are arranged, countercurrent heat exchange is realized, and the heat exchange efficiency of the reheater is high.
Description
Technical Field
The invention relates to a vertical MSR structure applied to a marine floating stack, and belongs to the technical field of nuclear power.
Background
A steam-water Separator Reheater (MSR) is required to be arranged between a high-pressure cylinder and a medium-low pressure cylinder of a steam turbine of the nuclear power unit and is used for removing Moisture of steam discharged by the high-pressure cylinder and heating the steam, and superheated steam enters the medium-low pressure cylinder and can reduce erosion damage and vibration of blades, so that the safety and the economy of operation of the nuclear power unit are improved.
With the development of marine industry, the floating reactor on the sea is also developed rapidly as a heavy device for upgrading marine economy and exploring the solution of energy problems. The offshore floating pile has small floor area, compact structural arrangement and limited space, and also puts forward more flexible requirements on the design of the MSR, and the existing horizontal MSR has large floor area and is not beneficial to the flexible arrangement of the whole unit.
Disclosure of Invention
The invention provides a vertical MSR structure of a marine floating pile, aiming at the problem that the existing MSR structure occupies a large area and is not suitable for the marine floating pile.
The invention relates to a vertical MSR structure of a marine floating stack, which comprises a vertical shell, a steam-water separation device and a reheater; the steam-water separation device and the reheater are arranged in the vertical shell and are sequentially arranged from bottom to top along the vertical shell.
Preferably, the reheater comprises a heat exchange tube bundle 8, a baffle plate 9, a heating steam inlet connecting pipe N6 and a reheater drainage outlet connecting pipe N7;
the heating steam inlet connecting pipe N6 and the reheater drain outlet connecting pipe N7 are respectively arranged at the upper part and the lower part of the heat exchange tube bundle 8 and are communicated with the heat exchange tube bundle 8, a plurality of baffle plates 9 are uniformly distributed around the heat exchange tube bundle 8, and the upper part of the vertical shell is provided with a circulating steam outlet N2.
Preferably, the steam-water separation device comprises a steam-water separation assembly 3 and a steam-water separation assembly drain pipe 10;
the lower part of the vertical shell is provided with a circulating steam inlet N1, steam entering from the circulating steam inlet N1 enters the steam-water separation assembly 3, steam flowing out of the steam-water separation assembly 3 enters a reheater, a steam-water separation assembly drain pipe 10 is arranged at the bottom of the steam-water separation assembly 3, and drain water in the steam-water separation assembly 3 flows out through the steam-water separation assembly drain pipe 10.
Preferably, the MSR structure further comprises a first steam shield 5 and a plurality of second steam shields 4;
the first steam baffle 5 is arranged at the bottom of the reheater and used for limiting all steam flowing from the steam-water separation device to the reheater to enter the heat exchange tube bundle 8 along the baffle plate 9;
the second steam baffle 4 is arranged between the steam-water separation assemblies 3, so that all steam entering from the circulating steam inlet N1 enters the steam-water separation assemblies 3.
Preferably, the vertical shell comprises a shell seal head 1, a shell 2 and supporting legs 11;
two casing head 1 settings are at the top and the bottom of casing 2, and landing leg 11 is fixed in the both sides of casing 2 bottom, plays the supporting role.
Preferably, the vertical shell further comprises a plurality of safety valve connecting pipes N3, a shell drain outlet connecting pipe N4 and a drain tank balancing port N5;
a plurality of safety valve take-over pipes N3; the reheater is arranged at the upper part of the side surface of the shell 2 and corresponds to the position of the reheater;
the drain box balance port N5 is arranged at the lower part of the side surface of the shell 2 and corresponds to the position of the steam-water separation device;
the shell drainage outlet connecting pipe N4 is arranged on the bottom shell head 1 and is communicated with the shell 2.
The invention has the beneficial effects that: 1. the reheater and the steam-water separation component are arranged up and down, the occupied area is small, the reheater and the steam-water separation component can be applied to narrow spaces, and the flexibility of the overall arrangement of the marine floating pile unit is improved. 2. The baffle plates are arranged, countercurrent heat exchange is realized, and the heat exchange efficiency of the reheater is high. 3. Compact structure and unobstructed air passage.
Drawings
FIG. 1 is a schematic diagram of a vertical MSR structure of a floating offshore stack;
fig. 2 is a schematic sectional view taken along line B-B of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The vertical MSR structure of the offshore floating stack in the embodiment comprises a vertical shell, a steam-water separation device and a reheater; the steam-water separation device and the reheater are arranged in the vertical shell and are sequentially arranged from bottom to top along the vertical shell, so that the diameter of the vertical shell can be reduced, and the occupied area is reduced.
In the preferred embodiment, the reheater comprises heat exchange tube bundle 8, baffle 9, heating steam inlet connection N6 and reheater drain outlet connection N7;
the heating steam inlet connecting pipe N6 and the reheater drain outlet connecting pipe N7 are respectively arranged at the upper part and the lower part of the heat exchange tube bundle 8 and are communicated with the heat exchange tube bundle 8, a plurality of baffle plates 9 are uniformly distributed around the heat exchange tube bundle 8, and the upper part of the vertical shell is provided with a circulating steam outlet N2.
The heating steam in the heat exchange tube bundle 8 and the circulating steam in the vertical shell flow reversely to perform countercurrent heat exchange, and the baffle plates 9 are uniformly arranged to improve the flow velocity of the circulating steam and improve the heat exchange efficiency.
In a preferred embodiment, the steam-water separation device of the present embodiment includes a steam-water separation assembly 3 and a steam-water separation assembly drain pipe 10;
a circulating steam inlet N1 is arranged at the lower part of the vertical shell, steam entering from a circulating steam inlet N1 enters the steam-water separation assembly 3, steam flowing out of the steam-water separation assembly 3 enters a reheater, a steam drain pipe 10 of the steam-water separation assembly is arranged at the bottom of the steam-water separation assembly 3, and drain water in the steam-water separation assembly 3 flows out through the steam drain pipe 10.
In a preferred embodiment, the MSR structure of the present embodiment further includes a first steam trap 5 and a plurality of second steam traps 4;
the first steam baffle 5 is arranged at the bottom of the reheater and used for limiting all steam flowing from the steam-water separation device to the reheater to enter the heat exchange tube bundle 8 along the baffle plate 9;
the second steam baffle 4 is arranged between the steam-water separation assemblies 3, so that all steam entering from the circulating steam inlet N1 enters the steam-water separation assemblies 3.
In a preferred embodiment, the vertical shell of the present embodiment includes a shell head 1, a shell 2 and legs 11;
two casing head 1 settings are at the top and the bottom of casing 2, and landing leg 11 is fixed in the both sides of casing 2 bottom, plays the supporting role.
In a preferred embodiment, the vertical casing of the present embodiment further includes a plurality of safety valve connection pipes N3, a casing drain outlet connection pipe N4, and a drain tank balancing port N5;
a plurality of safety valve take-over pipes N3; the reheater is arranged at the upper part of the side surface of the shell 2 and corresponds to the position of the reheater;
the drain box balance port N5 is arranged at the lower part of the side surface of the shell 2 and corresponds to the position of the steam-water separation device;
the shell drainage outlet connecting pipe N4 is arranged on the bottom shell head 1 and is communicated with the shell 2.
As shown in fig. 1 and 2, the circulating steam of the present embodiment enters the housing 2 through the N1 circulating steam inlet, flows upward to enter the steam-water separation assemblies 3 for steam-water separation, and the separated hydrophobic water flows downward along the steam-water separation assembly hydrophobic pipes 10 disposed at both ends of each steam-water separation assembly 3 to enter the housing head 1, and is finally discharged through the housing hydrophobic outlet connecting pipe N4. The separated dry steam continues to flow upwards, enters the heat exchange tube bundle 8 to exchange heat with high-temperature and high-pressure heating steam in the heat exchange tubes, and finally becomes superheated steam which is discharged through a circulating steam outlet connecting tube N2.
As shown in fig. 1, in order to ensure that the circulating steam smoothly enters the heat exchange tube bundle 8, a second steam baffle 4 is arranged in front of each steam-water separation assembly 3, and a first steam baffle 5 is arranged at the reheater head 6. In order to increase the flow velocity of steam and improve the heat exchange efficiency, baffle plates 9 are uniformly arranged at the positions of the heat exchange tube bundles 8. In order to make the drainage at the casing drainage outlet connecting pipe N4 smoothly drain into the drainage tank, a drainage tank balancing port N5 is arranged. In order to prevent steam overpressure in the housing 2, a safety valve connection N3 is provided for protection.
Heating steam extracted from the main steam or the high-pressure cylinder enters the reheater through the heating steam inlet connecting pipe N6, enters the heat exchange tube bundle 8 through the reheater end socket 6 and the reheater tube plate 7 and flows downwards and upwards to perform countercurrent heat exchange, and therefore heat exchange efficiency is improved. The steam heated by heat exchange is changed into water or the low-parameter steam reheater tube plate 7 and the reheater end socket 6 are discharged from a reheater drainage outlet connecting pipe N7.
The steam-water separation assemblies 3 are arranged in groups according to actual needs and are arranged vertically, and each group of steam-water separation assemblies 3 consists of a porous plate and a steam-water separation plate. Two ends of each group of steam-water separation components 3 are fixedly connected with the shell 2, two ends of each group of steam-water separation components 3 are provided with steam-water separation component drain pipes 10 for draining separated drain water, and in order to enable all circulating steam to enter the steam-water separation components 3 for steam-water separation, each group of steam-water separation components 3 are provided with second steam baffles 4.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (6)
1. A vertical MSR structure of a marine floating stack is characterized by comprising a vertical shell, a steam-water separation device and a reheater; the steam-water separation device and the reheater are arranged in the vertical shell and are sequentially arranged from bottom to top along the vertical shell.
2. The marine floating stack vertical MSR structure according to claim 1, characterized in that the reheater comprises a heat exchange tube bundle (8), a baffle (9), a heating steam inlet connection (N6) and a reheater drain outlet connection (N7);
the heating steam inlet connecting pipe (N6) and the reheater drain outlet connecting pipe (N7) are respectively arranged at the upper part and the lower part of the heat exchange tube bundle (8) and are communicated with the heat exchange tube bundle (8), a plurality of baffle plates (9) are uniformly distributed around the heat exchange tube bundle (8), and the upper part of the vertical shell is provided with a circulating steam outlet (N2).
3. The vertical MSR structure of claim 2, characterized in that the steam-water separation device comprises a steam-water separation assembly (3) and a steam-water separation assembly drain pipe (10);
the steam-water separator is characterized in that a circulating steam inlet (N1) is formed in the lower portion of the vertical shell, steam entering from the circulating steam inlet (N1) enters the steam-water separation assembly (3), steam flowing out of the steam-water separation assembly (3) enters the reheater, a steam-water separation assembly drain pipe (10) is arranged at the bottom of the steam-water separation assembly (3), and drain water in the steam-water separation assembly (3) flows out through the steam-water separation assembly drain pipe (10).
4. The offshore floating stack vertical MSR structure of claim 3, wherein the MSR structure further comprises a first steam shield (5) and a plurality of second steam shields (4);
the first steam baffle plate (5) is arranged at the bottom of the reheater and used for limiting all steam flowing from the steam-water separation device to the reheater to enter the heat exchange tube bundle (8) along the baffle plate (9);
the second steam baffle (4) is arranged between the steam-water separation assemblies (3), so that all steam entering from the circulating steam inlet (N1) enters the steam-water separation assemblies (3).
5. The vertical MSR structure of claim 4, characterized in that the vertical shell comprises a shell head (1), a shell (2) and legs (11);
two casing head (1) set up the top and the bottom in casing (2), and landing leg (11) are fixed in the both sides of casing (2) bottom, play the supporting role.
6. The vertical MSR structure of claim 5, characterized in that said vertical enclosure further comprises a plurality of safety valve nipples (N3), a housing drain outlet nipple (N4) and a drain tank balancing port (N5);
a plurality of safety valve connections (N3); the reheater is arranged at the upper part of the side surface of the shell (2) and corresponds to the position of the reheater;
the steam trap balance port (N5) is arranged at the lower part of the side surface of the shell (2) and corresponds to the position of the steam-water separation device;
the shell drainage outlet connecting pipe (N4) is arranged on the bottom shell end socket (1) and is communicated with the shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921562.5A CN112013374A (en) | 2020-09-04 | 2020-09-04 | Vertical MSR structure of marine floating pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921562.5A CN112013374A (en) | 2020-09-04 | 2020-09-04 | Vertical MSR structure of marine floating pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112013374A true CN112013374A (en) | 2020-12-01 |
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ID=73515386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010921562.5A Pending CN112013374A (en) | 2020-09-04 | 2020-09-04 | Vertical MSR structure of marine floating pile |
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| Country | Link |
|---|---|
| CN (1) | CN112013374A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0373554A1 (en) * | 1988-12-15 | 1990-06-20 | STEIN INDUSTRIE Société Anonyme dite: | Superheater tube bundle for a horizontal steam separator-reheater |
| CN203764006U (en) * | 2014-04-17 | 2014-08-13 | 山东电力工程咨询院有限公司 | MSR (Molten Salt Reactor) steam distribution device |
| CN207122334U (en) * | 2017-07-31 | 2018-03-20 | 中国船舶重工集团公司第七一九研究所 | Marine vertical steam-water separation reheat machine |
| CN207936041U (en) * | 2018-03-16 | 2018-10-02 | 哈尔滨汽轮机厂辅机工程有限公司 | A kind of tetra- flow reheating of MSR tube bank with U-shaped heat exchange tube structure |
-
2020
- 2020-09-04 CN CN202010921562.5A patent/CN112013374A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0373554A1 (en) * | 1988-12-15 | 1990-06-20 | STEIN INDUSTRIE Société Anonyme dite: | Superheater tube bundle for a horizontal steam separator-reheater |
| CN203764006U (en) * | 2014-04-17 | 2014-08-13 | 山东电力工程咨询院有限公司 | MSR (Molten Salt Reactor) steam distribution device |
| CN207122334U (en) * | 2017-07-31 | 2018-03-20 | 中国船舶重工集团公司第七一九研究所 | Marine vertical steam-water separation reheat machine |
| CN207936041U (en) * | 2018-03-16 | 2018-10-02 | 哈尔滨汽轮机厂辅机工程有限公司 | A kind of tetra- flow reheating of MSR tube bank with U-shaped heat exchange tube structure |
Non-Patent Citations (1)
| Title |
|---|
| 于涛等: "《压水堆核电厂系统与设备》", 31 August 2016 * |
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Application publication date: 20201201 |