CN207245763U - A kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system - Google Patents
A kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system Download PDFInfo
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- CN207245763U CN207245763U CN201721158921.6U CN201721158921U CN207245763U CN 207245763 U CN207245763 U CN 207245763U CN 201721158921 U CN201721158921 U CN 201721158921U CN 207245763 U CN207245763 U CN 207245763U
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Abstract
The utility model discloses a kind of high temperature gas cooled reactor back pressure turbine gland sealing steam supply system,The outlet of main steam system is divided into two-way,Wherein it is connected all the way with the entrance of back pressure turbine,Another way is connected with the entrance of main steam pressure reducing valve,The outlet of main steam pressure reducing valve and the outlet of back pressure turbine after pipeline and pipe by being divided into two-way,Wherein,It is connected all the way with the entrance of high pressure cylinder packing and the entrance of direct-contact desuperheater,Another way is connected with oxygen-eliminating device,The outlet of condensate system is connected with the entrance of direct-contact desuperheater,The outlet of direct-contact desuperheater is connected with the entrance of low pressure (LP) cylinder packing and the entrance of condenser,The system can make the high pressure cylinder gland sealing steam supply temperature of steam turbine and high pressure cylinder metal temperature match,Two kinds of vapour source handoff procedures are avoided to be disturbed caused by unit,Avoid the problem that auxiliary electric boiler longtime running caused by for seal steam quality decline to,And better economy.
Description
Technical field
The utility model belongs to technical field of nuclear power, is related to a kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system.
Background technology
Turbine steam seal system is used for sealing the gap between steam turbine sound component, is the important composition portion of steam turbine
Part.At present, turbine steam seal problem has become an important factor for influence Turbine Safety and economy.Mainly there are two aspect originals
Cause：(1) there are problem in itself for packing design structure so that labyrinth casing easily damages during steam turbine longtime running, causes low pressure (LP) cylinder
Packing is poorly sealed and causes vacuum to reduce, and steam consumption increase, turbine efficiency reduces, and causes steam turbine sound portion under serious conditions
Part friction, bearing vibration value rise, or even the major accidents such as turbine rotor permanent bend are caused, the problem is mainly by vapour
Seal structure is designed improvement to solve；(2) gland sealing steam supply system poor reliability so that gland sealing steam supply pressure and temperature can not
Strictly meet steam turbine operation demand.In the case of steam turbine longtime running, gland sealing steam supply hypertonia will cause steam to leak into axis
Case is held, lubrication oil mixed with water is caused and emulsifies, cause oil whip, bearing shell can be caused to burn when serious；When pressure of steam supply is too low,
It can equally cause low pressure (LP) cylinder shaft end gland seal poorly sealed；For stripping temperature is excessive steam turbine bearing temperature can be caused to raise, added
The creep properties of packing metal material, so as to cause packing deformed damaged；It can cause steam turbine ponding, machine for stripping temperature is too low
Difference increase that group is swollen.In view of this, how to improve turbine steam seal reliability becomes an important research topic.It is right at present
The achievement in research of each side is achieved in terms of how improving packing design structure, but with regard to how to improve gland sealing steam supply system reliability
The research of aspect is very few, and gland sealing steam supply parameter is adjusted frequently by accumulating experience in steam turbine actual moving process.
Ball bed modular high temperature gas cooled reactor nuclear power station is current internationally recognized forth generation advanced reactor, 211MW high temperature
Air cooled reactor Turbine Steam gland sealing steam supply system flow is illustrated in fig. 1 shown below.According to steam turbine cold conditions, stable state and hot starting, hot start operating mode not
Together, packing vapour source is provided by auxiliary electric boiler vapour system and main steam system respectively.When steam turbine cold conditions or stable state start, come
It is divided into two-way after being decompressed to 0.025-0.031MPa from the adjusted valve of superheated steam (1.6MPa, 350 DEG C) of auxiliary electric boiler：One
Road prevents steam from being leaked out from cylinder body directly for high pressure cylinder packing, and another way is by direct-contact desuperheater desuperheat to after 121-177 DEG C
Prevent extraneous air from leaking into cylinder body for low pressure (LP) cylinder packing, which comes from condensate system, steam turbine
During hot or very hot startup, main steam from reactor export (13.9MPa, 576 DEG C) is decompressed to by regulating valve
0.025-0.031MPa, by level-one direct-contact desuperheater desuperheat to being divided into two-way after 300-450 DEG C：High pressure cylinder vapour is directly supplied all the way
Envelope, another way is by two level direct-contact desuperheater desuperheat to supplying low pressure (LP) cylinder packing after 121-177 DEG C.Steam turbine during normal operation,
Gland sealing steam supply main-piping pressure is controlled to be not higher than 0.031MPa by overflow valve, when steam turbine load reaches the 25% of rated load
Afterwards, self sealss are realized come sealing low pressure cylinder packing after load reaches the 50% of rated load by high pressure cylinder gland leak-off, it is auxiliary
Electric boiler vapour system or main steam system is helped to exit.
The designing scheme has used two kinds of packing vapour sources in steam turbine cold conditions, stable state and hot different start operating performances, from
And successive step at the beginning of realizing gland sealing steam supply parameter meets unit demand.But at least there are following drawback for the designing scheme：(1) according to
Steam turbine Start-up and Adjustment directive/guide (DLT863-2004) provides：Steam turbine start-up course high pressure cylinder gland sealing steam supply temperature Ying Yugao
Cylinder pressure metal temperature matches (the general temperature difference≤85 DEG C), when unit cold conditions and stable state start, aids in electric boiler outlet vapor temperature
Spend constant, it is difficult to the change of Dynamic Matching start-up course high pressure cylinder metal temperature, easily cause gland sealing steam supply temperature drift or
Relatively low phenomenon, seriously affects unit safety；(2) unit is hot and during very hot startup, main steam steam supply seal pressure by
13.24MPa is down to 0.025-0.031MPa, can cause substantial amounts of droop loss during this, economy is poor.Pressure reducing valve at the same time
Front and rear higher pressure differential, inherently there are the flimsy risk of valve；(3) electric boiler is aided in be supplied in the case of longtime running
Seal steam quality can exist to be declined to a certain degree, and steam turbine is run reliably and with long-term to affect.
Utility model content
The purpose of the utility model is to overcome the shortcomings that the above-mentioned prior art, there is provided a kind of high temperature gas cooled reactor steam turbine
Gland sealing steam supply system, the system can make the high pressure cylinder gland sealing steam supply temperature of steam turbine and high pressure cylinder metal temperature match, keep away
Exempt from two kinds of vapour source handoff procedures to disturb caused by unit, avoid supplying seal steam quality caused by auxiliary electric boiler longtime running
The problem of dropping to, and better economy.
To reach above-mentioned purpose, high temperature gas cooled reactor Turbine Steam gland sealing steam supply system described in the utility model includes main steam
System, main steam pressure reducing valve, back pressure turbine, high pressure cylinder packing, direct-contact desuperheater, oxygen-eliminating device, condensate system, low pressure (LP) cylinder
Packing and condenser；
The outlet of main steam system is divided into two-way, wherein be connected all the way with the entrance of back pressure turbine, another way with
The entrance of main steam pressure reducing valve is connected, after the outlet of main steam pressure reducing valve and the outlet of back pressure turbine are by pipeline and pipe
It is divided into two-way, wherein, it is connected all the way with the entrance of high pressure cylinder packing and the entrance of direct-contact desuperheater, another way and oxygen-eliminating device phase
Connection, the outlet of condensate system are connected with the entrance of direct-contact desuperheater, outlet and the low pressure (LP) cylinder packing of direct-contact desuperheater
The entrance of entrance and condenser is connected.
The outlet of back pressure turbine and the outlet of main steam pressure reducing valve by being divided into two-way after pipeline and pipe, wherein, one
Road is connected through gland sealing steam supply main pipe pressure reducing valve with the entrance of high pressure cylinder packing and the entrance of direct-contact desuperheater, and another way is through main steaming
Vapour is connected for oxygen-eliminating device regulating valve with oxygen-eliminating device.
The outlet of oxygen-eliminating device is connected through steam feed pump with the entrance of oxygen-eliminating device, back pressure turbine and steam feed pump
It is coaxially arranged.
The adjusted valve in outlet of condensate system is connected with the entrance of direct-contact desuperheater.
It is connected between direct-contact desuperheater and condenser by packing overflow regulating valve.
The utility model has the advantages that：
High temperature gas cooled reactor back pressure turbine gland sealing steam supply system described in the utility model and method in concrete operations,
The outlet of main steam system is divided into two-way, wherein being connected all the way with the entrance of back pressure turbine, another way subtracts with main steam
The entrance of pressure valve is connected, and the outlet of back pressure turbine and the outlet of main steam pressure reducing valve are divided into two-way after pipeline and pipe,
Wherein it is connected all the way with oxygen-eliminating device, another way is connected with direct-contact desuperheater and high pressure cylinder packing, by adjusting back pressure type vapour
Turbine, makes the exhaust temperature of back pressure turbine and the Metal Temperature angle value of steam turbine high-pressure cylinder match, while uses single vapour
Source, realizes that steam turbine start-up course high pressure cylinder gland sealing steam supply temperature matches with high pressure cylinder metal temperature, drastically increases
The security and stability of steam turbine operation, while avoid the prior art from using in two kinds of vapour source handoff procedures to caused by unit possibility
Disturbance, beneficial to stable operation of unit.The utility model cancels electric boiler steam and supplies sealing system at the same time, vapour when avoiding longtime running
The problem of gland steam quality reduces, while oxygen-eliminating device heating vapour source is self-supporting by main steam in the utility model, greatly shortens
The time that steam turbine starts, improves the performance driving economy of unit.
Further, back pressure turbine and steam feed pump are coaxially arranged, are lost by a part of main steam pressure drop to drive
Dynamic back pressure turbine, by back pressure steam turbine drive steam feed pump, so as to be removed by steam feed pump come circulating-heating
The feedwater of oxygen device, realizes the recycling of energy.
Brief description of the drawings
Fig. 1 is the structure diagram of existing steam-supplying system；
Fig. 2 is the structure diagram of the utility model.
Wherein, 1 it is main steam system, 2 be main steam reducing valve, 3 be back pressure turbine, 4 is that gland sealing steam supply main pipe subtracts
Pressure valve, 5 be main steam for oxygen-eliminating device regulating valve, 6 be steam feed pump, 7 be oxygen-eliminating device, 8 be condensate system, 9 be regulating valve,
10 it is direct-contact desuperheater, 11 be high pressure cylinder packing, 12 be low pressure (LP) cylinder packing, 13 be packing overflow regulating valve, 14 is condenser.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, high temperature gas cooled reactor Turbine Steam gland sealing steam supply system described in the utility model include main steam system 1,
It is main steam pressure reducing valve 2, back pressure turbine 3, high pressure cylinder packing 11, direct-contact desuperheater 10, oxygen-eliminating device 7, condensate system 8, low
Cylinder pressure packing 12 and condenser 14；The outlet of main steam system 1 is divided into two-way, wherein the entrance with back pressure turbine 3 all the way
It is connected, another way is connected with the entrance of main steam pressure reducing valve 2, outlet and the back pressure turbine 3 of main steam pressure reducing valve 2
Outlet by being divided into two-way after pipeline and pipe, wherein, all the way with the entrance of high pressure cylinder packing 11 and the entrance of direct-contact desuperheater 10
It is connected, another way is connected with oxygen-eliminating device 7, and the outlet of condensate system 8 is connected with the entrance of direct-contact desuperheater 10, water spray
The outlet of attemperator 10 is connected with the entrance of low pressure (LP) cylinder packing 12 and the entrance of condenser 14.
The outlet of back pressure turbine 3 and the outlet of main steam pressure reducing valve 2 by being divided into two-way after pipeline and pipe, wherein,
It is connected all the way through gland sealing steam supply main pipe pressure reducing valve 4 with the entrance of high pressure cylinder packing 11 and the entrance of direct-contact desuperheater 10, it is another
Road is connected through main steam for oxygen-eliminating device regulating valve 5 with oxygen-eliminating device 7；The outlet of oxygen-eliminating device 7 is through steam feed pump 6 and oxygen-eliminating device 7
Entrance be connected, back pressure turbine 3 and steam feed pump 6 are coaxially arranged；The adjusted valve 9 in outlet of condensate system 8 with
The entrance of direct-contact desuperheater 10 is connected；It is connected between direct-contact desuperheater 10 and condenser 14 by packing overflow regulating valve 13
It is logical；Back pressure turbine 3 is back pressure type back pressure turbine.
The specific work process of the utility model is：
When steam turbine starts, the main steam that main steam system 1 exports enters back pressure turbine 3 and main steam pressure reducing valve
In 2, the exhaust steam pressure and exhaust temperature of back pressure turbine 3 are set according to steam turbine high-pressure cylinder Metal Temperature angle value, makes back pressure type
The exhaust temperature of steam turbine 3 and the Metal Temperature angle value of steam turbine high-pressure cylinder match, while make main steam through main steam pressure reducing valve 2
Pressure afterwards is consistent with the exhaust steam pressure of back pressure turbine 3, the steam and main steam pressure reducing valve that back pressure turbine 3 exports
Be divided into two-way after the steam convergences of 2 outputs, wherein enter all the way in oxygen-eliminating device 7, another way enter high pressure cylinder packing 11 and
In direct-contact desuperheater 10, then entered again after 10 desuperheat of direct-contact desuperheater in low pressure (LP) cylinder packing 12 and condenser 14, wherein,
The water that direct-contact desuperheater 10 is exported in desuperheating process by condensate system 8 is used as the cooling water source of direct-contact desuperheater 10, vapour
After turbine red switch, grid-connected and loaded-up, when steam turbine load reaches more than the 50% of rated load, turbine steam seal is real
Existing automatic-sealed, then close main steam system 1.
Embodiment one
By taking 211MW high temperature gas cooled reactor as an example, main steam total flow is 129600kg/h during unit starting, the utility model
Middle main steam system 1 is 4000kg/h for packing flow, and back pressure turbine 3 is into vapour mean flow under unit difference start operating performance
Measure as 3600kg/h, initial steam pressure 13.9MPa, be 450 DEG C into vapour mean temperature, steam discharge average pressure is 4MPa, and steam discharge is put down
Equal temperature is 300 DEG C, turbine efficiency 70%, with the 7000h that generates electricity in year, starts 100h in unit year and calculates, preresearch estimates can save
About energy reaches 15100kWh.
Use after the utility model specific work process for：
1. steam turbine cold start process：
1) reactor starts to start, after the 20% of reactor power raising to full power, steam generator outlet working medium
For saturated vapor (pressure：13.9MPa temperature：336.1℃)；The steam that main steam system 1 exports enters back pressure turbine 3
(exhaust steam pressure：1.6MPa, exhaust temperature：200 DEG C) in, while main steam pressure reducing valve 2 is thrown automatically and tracks back pressure type steam turbine
The exhaust steam pressure value of machine 3, ensures to export the pressure of steam and the exhaust steam pressure one of back pressure turbine 3 through main steam pressure reducing valve 2
Cause；Gland sealing steam supply main pipe pressure reducing valve 4 is thrown automatic and its exhaust steam pressure is set as 0.025-0.031MPa, regulating valve 9 is thrown
Automatically and the temperature of its exit condensation water is set as 121-177 DEG C, by condensate system 8 as the cold of direct-contact desuperheater 10
But water source, the steam that gland sealing steam supply main pipe pressure reducing valve 4 exports enter high pressure cylinder packing 11 and direct-contact desuperheater 10, spray desuperheating
The steam supply low pressure (LP) cylinder packing 12 that device 10 exports；Packing overflow regulating valve 13 from the pressure of motion tracking gland sealing steam supply main pipe, when
After gland sealing steam supply main-piping pressure is more than 0.031MPa, packing overflow regulating valve 13 is opened and so that header vapor pressure maintains
0.031MPa, the steam overflowed are discharged into condenser 14；
2) main steam throws automatic and tracks gland sealing steam supply flow after main steam pressure reducing valve 2 for oxygen-eliminating device regulating valve 5, works as packing
After steam supply flow meets unit demand, remaining main steam is discharged into oxygen-eliminating device 7 for oxygen-eliminating device regulating valve 5 by main steam, together
When by steam feed pump 6 circulating-heating is carried out to oxygen-eliminating device 7, to improve the thermal de-aeration efficiency of oxygen-eliminating device 7；
3) as reactor power raising, steam turbine high-pressure cylinder metal temperature gradually rise, 3 steam discharge temperature of back pressure turbine
The change from motion tracking steam turbine high-pressure cylinder metal temperature is spent, ensures 3 exhaust temperature of back pressure turbine and steam turbine high-pressure cylinder
Difference between metal temperature is less than or equal to 85 DEG C；After reactor capability rises to the 36% of full power, steam generator outlet
Working medium is superheated steam
(pressure：13.9MPa temperature：400 DEG C), the exhaust steam pressure of back pressure turbine 3 is 2MPa, exhaust temperature 270
℃.The steam parameter of reactor export meets steam turbine red switch demand at this time, and steam turbine starts red switch, grid-connected and on-load；
4) reactor capability continues to lift up, after reactor capability rises to the 50% of full power, steam generator outlet work
Matter is superheated steam (pressure：13.9MPa temperature：571 DEG C), the load of steam turbine reaches the 25% of rated load at this time；Back pressure
The exhaust steam pressure of formula steam turbine 3 is 5MPa, and exhaust temperature is 400 DEG C, leaks vapour by high pressure cylinder packing 11 come sealing low pressure at this time
Cylinder packing 12, and gland sealing steam supply main pipe pressure reducing valve 4 is gradually turned down, after the load of steam turbine reaches the 50% of rated load,
The sealing system of steam turbine realizes self sealss, and after gland sealing steam supply main pipe 4 contract fully of pressure reducing valve, main steam pressure reducing valve 2 slowly closes
Close, back pressure turbine 3 and steam feed pump 6 are out of service immediately.
2. steam turbine warm starting process：
The operating procedure of the cold start of the warm starting and steam turbine of steam turbine is essentially identical, it is distinguished part and is：
High pressure cylinder Metal Temperature angle value when being started according to steam turbine, when reactor power ascension to full power 20% after, main steam system
The steam of the output of system 1 enters in steam turbine 3, and the exhaust steam pressure of back pressure turbine 3 is 3MPa at this time, and exhaust temperature is 290 DEG C,
Change of the exhaust temperature of subsequent back pressure turbine 3 from motion tracking steam turbine high-pressure cylinder metal temperature.
3. the hot concrete operations of steam turbine are：
The hot or very hot startup and cold start operating procedure of back pressure turbine 3 are essentially identical, it distinguishes part
It is：High pressure cylinder Metal Temperature angle value when being started according to steam turbine, after the 36% of reactor power raising to full power, main steam
System 1 starts to put into and is Turbine Steam gland sealing steam supply, and the exhaust steam pressure of back pressure turbine 3 is 4MPa at this time, and exhaust temperature is
340 DEG C, the change of the exhaust temperature of subsequent back pressure turbine 3 from 3 high pressure cylinder metal temperature of motion tracking steam turbine.
Claims (5)
1. a kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system, it is characterised in that subtract including main steam system (1), main steam
Pressure valve (2), steam turbine (3), high pressure cylinder packing (11), direct-contact desuperheater (10), oxygen-eliminating device (7), condensate system (8), low pressure
Cylinder packing (12) and condenser (14)；
The outlet of main steam system (1) is divided into two-way, wherein the entrance with back pressure turbine (3) is connected all the way, another way
It is connected with the entrance of main steam pressure reducing valve (2), the outlet and the outlet of back pressure turbine (3) of main steam pressure reducing valve (2) lead to
Be divided into two-way after piping and pipe, wherein, all the way with the entrance of high pressure cylinder packing (11) and the entrance phase of direct-contact desuperheater (10)
Connection, another way are connected with oxygen-eliminating device (7), and the outlet of condensate system (8) is connected with the entrance of direct-contact desuperheater (10),
The outlet of direct-contact desuperheater (10) is connected with the entrance of low pressure (LP) cylinder packing (12) and the entrance of condenser (14).
2. high temperature gas cooled reactor Turbine Steam gland sealing steam supply system according to claim 1, it is characterised in that back pressure turbine
(3) outlet of outlet and main steam pressure reducing valve (2) by being divided into two-way after pipeline and pipe, wherein, it is female through gland sealing steam supply all the way
Pipe pressure reducing valve (4) is connected with the entrance of high pressure cylinder packing (11) and the entrance of direct-contact desuperheater (10), and another way is through main steam
It is connected for oxygen-eliminating device regulating valve (5) with oxygen-eliminating device (7).
3. high temperature gas cooled reactor Turbine Steam gland sealing steam supply system according to claim 1, it is characterised in that oxygen-eliminating device (7)
Outlet is connected through steam feed pump (6) with the entrance of oxygen-eliminating device (7), and back pressure turbine (3) and steam feed pump (6) are coaxial
Arrangement.
4. high temperature gas cooled reactor Turbine Steam gland sealing steam supply system according to claim 1, it is characterised in that condensate system
(8) the adjusted valve in outlet (9) is connected with the entrance of direct-contact desuperheater (10).
5. high temperature gas cooled reactor Turbine Steam gland sealing steam supply system according to claim 1, it is characterised in that direct-contact desuperheater
(10) it is connected between condenser (14) by packing overflow regulating valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721158921.6U CN207245763U (en) | 2017-09-11 | 2017-09-11 | A kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721158921.6U CN207245763U (en) | 2017-09-11 | 2017-09-11 | A kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system |
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| Publication Number | Publication Date |
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| CN207245763U true CN207245763U (en) | 2018-04-17 |
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ID=61887956
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721158921.6U Withdrawn - After Issue CN207245763U (en) | 2017-09-11 | 2017-09-11 | A kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664045A (en) * | 2017-09-11 | 2018-02-06 | 西安热工研究院有限公司 | A kind of HTGR Turbine Steam gland sealing steam supply system and method |
| CN109767852A (en) * | 2019-02-22 | 2019-05-17 | 西安热工研究院有限公司 | A kind of secondary circuit security system and its working method for reactor emergency shut-down |
| CN111927566A (en) * | 2020-07-03 | 2020-11-13 | 东方电气集团东方汽轮机有限公司 | Shaft seal system for large back pressure steam turbine |
| CN113266440A (en) * | 2021-06-11 | 2021-08-17 | 兖矿鲁南化工有限公司 | Steam control system and method |
| CN113653543A (en) * | 2021-09-24 | 2021-11-16 | 三门核电有限公司 | Method for reducing temperature of low-pressure shaft seal steam of nuclear turbine |
-
2017
- 2017-09-11 CN CN201721158921.6U patent/CN207245763U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664045A (en) * | 2017-09-11 | 2018-02-06 | 西安热工研究院有限公司 | A kind of HTGR Turbine Steam gland sealing steam supply system and method |
| CN107664045B (en) * | 2017-09-11 | 2023-09-19 | 西安热工研究院有限公司 | High-temperature gas cooled reactor steam turbine gland seal steam supply system and method |
| CN109767852A (en) * | 2019-02-22 | 2019-05-17 | 西安热工研究院有限公司 | A kind of secondary circuit security system and its working method for reactor emergency shut-down |
| CN109767852B (en) * | 2019-02-22 | 2024-06-04 | 西安热工研究院有限公司 | Two-loop safety system for reactor emergency shutdown and working method thereof |
| CN111927566A (en) * | 2020-07-03 | 2020-11-13 | 东方电气集团东方汽轮机有限公司 | Shaft seal system for large back pressure steam turbine |
| CN113266440A (en) * | 2021-06-11 | 2021-08-17 | 兖矿鲁南化工有限公司 | Steam control system and method |
| CN113653543A (en) * | 2021-09-24 | 2021-11-16 | 三门核电有限公司 | Method for reducing temperature of low-pressure shaft seal steam of nuclear turbine |
| CN113653543B (en) * | 2021-09-24 | 2023-10-20 | 三门核电有限公司 | Low-pressure shaft seal steam temperature reduction method of nuclear turbine |
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