CN113833533A - Auxiliary steam device - Google Patents
Auxiliary steam device Download PDFInfo
- Publication number
- CN113833533A CN113833533A CN202111146210.8A CN202111146210A CN113833533A CN 113833533 A CN113833533 A CN 113833533A CN 202111146210 A CN202111146210 A CN 202111146210A CN 113833533 A CN113833533 A CN 113833533A
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- valve
- electric isolating
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- isolating valve
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- 230000007246 mechanism Effects 0.000 claims abstract description 91
- 238000002955 isolation Methods 0.000 claims abstract description 64
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 238000009413 insulation Methods 0.000 claims 2
- 238000005452 bending Methods 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009191 jumping Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/10—Heating, e.g. warming-up before starting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses an auxiliary steam device, comprising: an auxiliary steam mechanism adapted to generate steam; the heating mechanism is connected with the auxiliary steam mechanism through a pipeline and is suitable for heating the steam generated by the auxiliary steam mechanism; the shaft seal system is connected with the heating mechanism through a pipeline; the first isolation device is arranged between the auxiliary steam mechanism and the heating mechanism; and the second isolation device is arranged between the heating mechanism and the shaft seal system. Through setting up steam mechanism, heating mechanism, first isolating device and second isolating device to with the series connection of bearing seal system, in single operation emergency shutdown pile or two operation jump simultaneously and pile the back, can in time provide high-temperature steam for the steam turbine through the bearing seal system, make the steam turbine can continue the operation, avoided the steam turbine because of lacking the risk that high-temperature steam caused sound friction and macroaxis bending risk.
Description
Technical Field
The invention relates to the technical field of nuclear power, in particular to an auxiliary steam device.
Background
China is a world with large electricity consumption and a power generation country, and nuclear power generation is one of the main power generation modes in China at present. Among them, the pebble-bed high-temperature gas cooled reactor is an advanced nuclear reactor with good intrinsic safety, wide application and high power generation efficiency, and is also a fourth generation nuclear energy reactor type technology in the international nuclear energy field.
Although the pebble bed high temperature gas cooled reactor is a new energy reactor type technology, its technology is still incomplete. For example, when a high-temperature gas cooled reactor is in a single-reactor operation emergency shutdown state or a double-reactor operation simultaneous reactor jump state, a main steam isolation valve on a nuclear island side is closed in a linkage manner, and according to the existing system design, a steam source of a steam turbine shaft seal system is lost. At the moment, the steam quantity in the pipeline of the main steam system can only provide the steam requirement of the steam turbine shaft seal system for at most 5 minutes, the highest temperature of steam generated after the auxiliary electric boiler is started by one key is 350 ℃, the parameter requirement of shaft seal steam can not be met, the metal temperature of a rotor is about 540 ℃ during tripping, the shaft seal steam temperature is required to be about 430 ℃, and the steam parameter provided by the conventional auxiliary boiler can not meet the requirement. Meanwhile, the auxiliary electric boiler is started by one key in a hot standby state until the shaft seal steam with the temperature of 350 ℃ is produced, and the time is about 20min actually. Therefore, a method and apparatus for providing a high temperature gas cooled reactor with a lost shaft seal for a steam turbine is needed.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that steam cannot be provided in time in the prior art due to the fact that a high-temperature reactor is under the working condition of single-reactor operation emergency shutdown or double-reactor operation simultaneous reactor jumping.
To this end, the present invention provides an auxiliary steam device comprising:
an auxiliary steam mechanism adapted to generate steam;
the heating mechanism is connected with the auxiliary steam mechanism through a pipeline and is suitable for heating the steam generated by the auxiliary steam mechanism;
the shaft seal system is connected with the heating mechanism through a pipeline;
the first isolation device is arranged between the auxiliary steam mechanism and the heating mechanism;
and the second isolation device is arranged between the heating mechanism and the shaft seal system.
Further, the first isolation device includes:
and the air inlet electric isolating valve is arranged between the auxiliary steam mechanism and the heating mechanism, one end of the air inlet electric isolating valve is connected with the auxiliary steam mechanism, and the other end of the air inlet electric isolating valve is connected with the heating mechanism.
Further, the second isolation device includes:
and the outlet electric isolation valve is arranged between the heating mechanism and the shaft seal system, one end of the outlet electric isolation valve is connected with the heating mechanism, and the other end of the outlet electric isolation valve is connected with the shaft seal system.
Furthermore, a front manual valve of the air inlet electric isolating valve is arranged between the air inlet electric isolating valve and the auxiliary steam mechanism, and a rear manual valve of the air inlet electric isolating valve is arranged between the air inlet electric isolating valve and the heating mechanism.
Furthermore, the air inlet electric isolating valve, the front manual valve of the air inlet electric isolating valve and the rear manual valve of the air inlet electric isolating valve are arranged in series.
Furthermore, a front manual valve of the outlet electric isolation valve is arranged between the outlet electric isolation valve and the heating mechanism, and a rear manual valve of the outlet electric isolation valve is arranged between the outlet electric isolation valve and the shaft seal system.
Furthermore, the outlet electric isolating valve, the front manual valve of the outlet electric isolating valve and the rear manual valve of the outlet electric isolating valve are arranged in series.
Further, the method also comprises the following steps: the air inlet electric isolating valve bypass valve is arranged in parallel with the air inlet electric isolating valve, the front manual valve of the air inlet electric isolating valve and the rear manual valve of the air inlet electric isolating valve, and the outlet electric isolating valve bypass valve is arranged in parallel with the outlet electric isolating valve, the front manual valve of the outlet electric isolating valve and the rear manual valve of the outlet electric isolating valve.
Further, the auxiliary steam mechanism includes an auxiliary steam header.
Further, the heating mechanism comprises a steam electric heater for shaft seal.
The technical scheme provided by the invention has the following advantages:
1. the invention provides an auxiliary steam device, comprising: the steam heating device comprises an auxiliary steam mechanism, a heating mechanism, a shaft seal system, a first isolation device and a second isolation device. The heating mechanism is connected with the auxiliary steam mechanism through a pipeline and is suitable for heating the steam generated by the auxiliary steam mechanism; the shaft seal system is connected with the heating mechanism through a pipeline; the first isolation device is arranged between the auxiliary steam mechanism and the heating mechanism; the second isolation device is arranged between the heating mechanism and the shaft seal system.
The supplementary steam device of this structure, supplementary steam mechanism, heating mechanism, the bearing seal system, first isolation valve and second isolation valve series connection set up, first isolation device is separated supplementary steam mechanism and heating mechanism, first isolation device separates heating mechanism and bearing seal system, jump under the heap operating mode simultaneously in emergency shutdown or two operation of piling up, operating personnel can open first isolation device and second isolation device fast, make the steam that supplementary steam mechanism produced get into the heating mechanism after-heating, the bearing seal system is supplied with fast to the steam after will heating again, guarantee the air feed demand of bearing seal system, can effectively avoid the steam turbine because of lacking the risk that high temperature steam caused sound friction and bent risk of macroaxis.
2. The invention provides an auxiliary steam device, comprising; the system comprises an air inlet electric isolating valve front manual valve, an air inlet electric isolating valve rear manual valve, an outlet electric isolating valve front manual valve and an outlet electric isolating valve rear manual valve. The front manual valve of the air inlet electric isolating valve is arranged between the air inlet electric isolating valve and the auxiliary steam mechanism; the rear manual valve of the air inlet electric isolating valve is arranged between the air inlet electric isolating valve and the heating mechanism; the front manual valve of the outlet electric isolating valve is arranged between the outlet electric isolating valve and the heating mechanism, and the rear manual valve of the outlet electric isolating valve is arranged between the outlet electric isolating valve and the shaft seal system.
The auxiliary steam device of this structure sets up with the electronic isolation valve series connection of admitting air through the preceding manual valve of electronic isolation valve that will admit air and the electronic isolation valve that admits air back manual valve, and the electronic isolation valve of export is the series connection setting with the electronic isolation valve of export before the electronic isolation valve of manual valve and the electronic isolation valve of export to make the pipeline confined more thorough of connecting between auxiliary steam mechanism, heating mechanism, the bearing seal system, further improvement auxiliary steam device's stability.
3. The invention provides an auxiliary steam device, comprising: an inlet electrically-operated isolation valve bypass valve and an outlet electrically-operated isolation valve bypass valve. The air inlet electric isolating valve bypass valve is connected in parallel with the air inlet electric isolating valve, the front manual valve of the air inlet electric isolating valve and the rear manual valve of the air inlet electric isolating valve; the outlet electric isolating valve bypass valve is connected with the outlet electric isolating valve, the outlet electric isolating valve front manual valve and the outlet electric isolating valve rear manual valve in parallel.
The auxiliary steam device with the structure has the advantages that the air inlet electric isolating valve bypass valve and the outlet electric isolating valve bypass valve are arranged, so that when the air inlet electric isolating valve and the outlet electric isolating valve simultaneously break down or one of the air inlet electric isolating valve and the outlet electric isolating valve fails and cannot be used, the air inlet electric isolating valve bypass valve and the outlet electric isolating valve bypass valve can be opened or only the bypass valve of the failed isolating device is opened, steam generated by the auxiliary steam mechanism can be supplied to the shaft seal system, the air supply requirement of the shaft seal system is further guaranteed, and the stability of the auxiliary steam device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of an auxiliary steam unit provided in an embodiment of the present invention
Description of reference numerals:
1-an auxiliary steam mechanism; 2-a heating mechanism; 3-a shaft seal system;
4-a first isolation device; 5-a second isolation device;
6-manual valve in front of the air inlet electric isolating valve; 7-air inlet electric isolating valve back manual valve;
8-outlet electric isolating valve front manual valve; 9-outlet electric isolating valve back manual valve;
10-an air intake electric isolating valve bypass valve; 11-outlet electrically-actuated isolation valve bypass valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides an auxiliary steam device, as shown in fig. 1, including: the steam heating device comprises an auxiliary steam mechanism 1, a heating mechanism 2, a shaft seal system 3, a first isolation device 4 and a second isolation device 5. Wherein, the auxiliary steam mechanism 1 is connected with the heating mechanism 2 through a pipeline; the first isolation device 4 is arranged between the auxiliary steam mechanism 1 and the heating mechanism 2 and is used for isolating the auxiliary steam mechanism 1 from the heating mechanism 2 to form different spaces; the heating mechanism 2 is connected with the shaft seal system 3 through a pipeline; the second isolation device 5 is arranged between the heating mechanism 2 and the shaft seal system 3 and is used for isolating the heating mechanism 2 from the shaft seal system 3 to form different spaces; the auxiliary steam mechanism 1, the heating mechanism 2, the shaft seal system 3, the first isolation device 4 and the second isolation device 5 are arranged in series.
In this embodiment, the first isolation device 4 is an intake electric isolation valve, and the second isolation device 5 is an outlet electric isolation valve.
Specifically, in this embodiment, the auxiliary steam mechanism 1 is an auxiliary steam header, the heating mechanism 2 is a steam electric heater for shaft sealing, and in other alternative embodiments, the auxiliary steam mechanism 1 may also be an auxiliary electric boiler.
In the auxiliary steam device provided by this embodiment, the front manual valve 6 of the air inlet electric isolating valve is arranged between the auxiliary steam header and the air inlet electric isolating valve, the rear manual valve 7 of the air inlet electric isolating valve is arranged between the air inlet electric isolating valve and the steam electric heater for shaft seal, and the air inlet electric isolating valve, the front manual valve 6 of the air inlet electric isolating valve and the rear manual valve 7 of the air inlet electric isolating valve are arranged in series; an outlet electric isolating valve front manual valve 8 is arranged between the outlet electric isolating valve and the steam-electric heater for the shaft seal, an outlet electric isolating valve rear manual valve 9 is arranged between the outlet electric isolating valve and the shaft seal system 3, and the outlet electric isolating valve, the outlet electric isolating valve front manual valve 8 and the outlet electric isolating valve rear manual valve 9 are arranged in series.
Through the arrangement of the front manual valve 6 of the air inlet electric isolating valve, the rear manual valve 7 of the air inlet electric isolating valve, the front manual valve 8 of the outlet electric isolating valve and the rear manual valve 9 of the outlet electric isolating valve, the pipeline connected among the auxiliary steam header, the steam electric heater for the shaft seal and the shaft seal system 3 is more thoroughly sealed, and the stability of the auxiliary steam device is further improved.
The auxiliary steam device that this embodiment provided still includes electronic isolation valve by-pass valve 10 of admitting air and export electronic isolation valve by-pass valve 11, electronic isolation valve by-pass valve 10 and electronic isolation valve of admitting air, preceding manual valve 6 of electronic isolation valve of admitting air and electronic isolation valve after 7 manual valves of admitting air are parallelly connected and set up, export electronic isolation valve by-pass valve 11 and export electronic isolation valve, preceding manual valve 8 of the electronic isolation valve of export and the electronic isolation valve of export behind the manual valve 9 are parallelly connected and set up.
When the air inlet electric isolating valve and the outlet electric isolating valve are failed simultaneously or one of the air inlet electric isolating valve and the outlet electric isolating valve is failed and can not be used, the air inlet electric isolating valve bypass valve 10 and the outlet electric isolating valve bypass valve 11 can be opened simultaneously or only the bypass valve of the failed isolating device is opened, so that the steam generated by the auxiliary steam mechanism can be supplied to the shaft seal system 3.
The auxiliary steam device provided by the embodiment has the following use process:
(1) when the high-temperature reactor is subjected to emergency shutdown in single-reactor operation or simultaneous reactor jumping in double-reactor operation, opening a front manual valve of the air inlet electric isolating valve, the air inlet electric isolating valve and a rear manual valve of the air inlet electric isolating valve, and enabling steam produced by the auxiliary steam header to enter a steam-electric heater for shaft seal through a pipeline; if the air inlet electric isolating valve has a fault, the bypass valve of the air inlet electric isolating valve can be opened, so that steam enters the steam electric heater for the shaft seal through the bypass valve of the air inlet electric isolating valve.
(2) Then the shaft seal heats the entering steam by a steam electric heater;
(3) after the steam is heated, opening a front manual valve of the outlet electric isolating valve, the outlet electric isolating valve and a rear manual valve of the outlet electric isolating valve, and enabling the heated steam to enter the shaft seal system; if the outlet electric isolation valve has a fault, the outlet electric isolation valve bypass valve can be opened, so that the heated steam enters the shaft seal system through the outlet electric isolation valve bypass valve.
The supplementary steam device that this embodiment provided is through setting up steam mechanism, heating mechanism, first isolating device and second isolating device to with shaft seal system series connection, after single operation emergency stop pile or two operation jump piles simultaneously, can in time provide high-temperature steam for the steam turbine through the shaft seal system, make the steam turbine can continue the operation, avoided the steam turbine because of lacking the risk that high-temperature steam caused sound friction and macroaxis bending risk.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An auxiliary steam device, comprising:
-an auxiliary steam mechanism (1) adapted to generate steam;
the heating mechanism (2) is connected with the auxiliary steam mechanism (1) through a pipeline and is suitable for heating the steam generated by the auxiliary steam mechanism (1);
the shaft seal system (3) is connected with the heating mechanism (2) through a pipeline;
the first isolation device (4) is arranged between the auxiliary steam mechanism (1) and the heating mechanism (2);
and the second isolation device (5) is arranged between the heating mechanism (2) and the shaft seal system (3).
2. Auxiliary steam device according to claim 1, characterized in that said first insulation means (4) comprise:
the air inlet electric isolating valve is arranged between the auxiliary steam mechanism (1) and the heating mechanism (2), one end of the air inlet electric isolating valve is connected with the auxiliary steam mechanism (1), and the other end of the air inlet electric isolating valve is connected with the heating mechanism (2).
3. Auxiliary steam device according to claim 2, characterized in that said second insulation means (5) comprise:
and the outlet electric isolation valve is arranged between the heating mechanism (2) and the shaft seal system (3), one end of the outlet electric isolation valve is connected with the heating mechanism (2), and the other end of the outlet electric isolation valve is connected with the shaft seal system (3).
4. The auxiliary steam device of claim 3, wherein: an air inlet electric isolating valve front manual valve (6) is arranged between the air inlet electric isolating valve and the auxiliary steam mechanism (1), and an air inlet electric isolating valve rear manual valve (7) is arranged between the air inlet electric isolating valve and the heating mechanism (2).
5. The auxiliary steam device of claim 4, wherein: the air inlet electric isolating valve, the front manual valve (6) of the air inlet electric isolating valve and the rear manual valve (7) of the air inlet electric isolating valve are arranged in series.
6. The auxiliary steam device of claim 3, wherein: an outlet electric isolating valve front manual valve (8) is arranged between the outlet electric isolating valve and the heating mechanism (2), and an outlet electric isolating valve rear manual valve (9) is arranged between the outlet electric isolating valve and the shaft seal system (3).
7. The auxiliary steam device of claim 6, wherein; the outlet electric isolating valve, the front manual valve (8) of the outlet electric isolating valve and the rear manual valve (9) of the outlet electric isolating valve are arranged in series.
8. An auxiliary steam device according to any one of claims 1 to 7, further comprising: the air inlet electric isolating valve comprises an air inlet electric isolating valve bypass valve (10) and an outlet electric isolating valve bypass valve (11), wherein the air inlet electric isolating valve bypass valve (10) is arranged in parallel with the air inlet electric isolating valve, a front manual valve (6) of the air inlet electric isolating valve and a rear manual valve (7) of the air inlet electric isolating valve, and the outlet electric isolating valve bypass valve (11) is arranged in parallel with the outlet electric isolating valve, a front manual valve (8) of the outlet electric isolating valve and a rear manual valve (9) of the outlet electric isolating valve.
9. The auxiliary steam device of claim 8, wherein: the auxiliary steam mechanism (1) comprises an auxiliary steam header.
10. The auxiliary steam device of claim 9, wherein: the heating mechanism (2) comprises a steam electric heater for shaft seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111146210.8A CN113833533B (en) | 2021-09-28 | 2021-09-28 | Auxiliary steam device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111146210.8A CN113833533B (en) | 2021-09-28 | 2021-09-28 | Auxiliary steam device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113833533A true CN113833533A (en) | 2021-12-24 |
| CN113833533B CN113833533B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111146210.8A Active CN113833533B (en) | 2021-09-28 | 2021-09-28 | Auxiliary steam device |
Country Status (1)
| Country | Link |
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| CN (1) | CN113833533B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788606A (en) * | 2022-12-15 | 2023-03-14 | 东方电气集团东方汽轮机有限公司 | Heat accumulating type shaft seal electric heating system and control method |
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| CN113431638A (en) * | 2021-06-21 | 2021-09-24 | 华能山东石岛湾核电有限公司 | High-temperature gas cooled reactor shaft seal system and rapid gas supply device and method thereof |
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2021
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| CN115788606A (en) * | 2022-12-15 | 2023-03-14 | 东方电气集团东方汽轮机有限公司 | Heat accumulating type shaft seal electric heating system and control method |
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| Publication number | Publication date |
|---|---|
| CN113833533B (en) | 2024-02-23 |
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