CN106121740A - A kind of shaft seal steam supply system - Google Patents
A kind of shaft seal steam supply system Download PDFInfo
- Publication number
- CN106121740A CN106121740A CN201610465218.3A CN201610465218A CN106121740A CN 106121740 A CN106121740 A CN 106121740A CN 201610465218 A CN201610465218 A CN 201610465218A CN 106121740 A CN106121740 A CN 106121740A
- Authority
- CN
- China
- Prior art keywords
- valve
- connects
- shaft seal
- steam
- seal steam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F01D11/06—Control thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a kind of shaft seal steam supply system, mainly include boiler steam pipe, heat supply mother pipe, the first shaft seal steam device, the second shaft seal steam device and the 3rd shaft seal steam device composition；It is characterized in that: being provided with above-mentioned three set shaft seal steam devices in the middle of boiler steam pipe and heat supply mother's pipe, heat supply mother's pipe tail end is provided with valve, and its vapour supply user uses.The invention have the advantage that for two shaft seal steam source, road existing problems, manage from heat supply mother and connect a shaft seal steam source from the machine the most nearby；This road steam pressure, at about 20 times that about 0.6mpa is axle envelope steam pressure, facilitates operation adjustment temperature about 300, just can meet axle envelope vapour requirement without desuperheat, in unit starting, initial steam can be closed during with this road steam, in day-to-day operation, keep this road resting state.
Description
Technical field
The invention belongs to a kind of steam turbine technology field, be specially a kind of shaft seal steam supply system.
Background technology
Steam turbine is the external combustion rotary machinery that steam thermal energy can be converted into mechanical power, and the steam from boiler enters vapour
After turbine, sequentially pass through nozzle and the movable vane of a series of loop configurations, the heat energy of steam is converted into what turbine rotor rotated
Mechanical energy.Steam, in steam turbine, carries out energy conversion by different way, just constitutes the steam turbine of different operating principle.?
In steam turbine operation work, vacuum is a very important coefficient, and shaft seal steam is a key factor affecting vacuum
One of, and this factor is embodied in the overall process of operation, such as startup, daily operation adjustment accident treatment, shutdown etc..
Shaft seal steam pressure typically requires that between 0.003-0.03MPa between i.e. 3-30kpa, temperature controls between 150-260 DEG C.
Though shaft seal steam operation is little skill, but very important, because shaft seal steam deficiency will make breaking of vacuum impact peace
Entirely, the too urgent excess of shaft seal steam will make axle seal damaged, time serious, will beat inclined shaft seal, be allowed to friction and cause big axle overheated, generation
Vibration, even more serious, make axle envelope complete wear flat (shaving clearly) cause a large amount of gas leakage of axle envelope uneconomical, make that bearing oil enters vapour and make oil
Middle band water emulsification causes regulation security department set corrosion bite, causes major safety risks.Owing to axle big envelope is in cylinder, it is necessary to take off
Cylinder could overhaul changes the axle envelope damaged, time and effort consuming, and economic loss is big, so operating for shaft seal steam, it is necessary to cause weight
Depending on, it is necessary to go into seriously.
Shaft seal design installs the deficiency existed and operation inconvenience at present；Present shaft seal steam is from surge tank, and all presses
Case come Qi You bis-tunnel, come from initial steam, come before the machine one takes out electrically operated valve.First say initial steam one tunnel: newly steam
Vapour is from boiler, and superheated steam pressure is high, about about 4.6Mpa, after high about the 470 DEG C reducing pressure by regulating flows that must first reduce pressure of temperature, supplies
Axle envelope vapour, owing to pressure is about 150 times of shaft seal steam pressure, this road vapor (steam) temperature is high, it is necessary to cold water or condensation
Water desuperheat, complicated and operation inconvenience.Besides axle steam one tunnel, owing to this road steam is from before the machine one axle Electrically operated gate, before start
Can not use at the machine one axle or under vacuum state, in load carrying, after general band 15%-20% rated load, the axle envelope of the machine
Leakage vapour is entirely capable of meeting shaft seal steam requirement, although now one taking out pressure and can use, but does not need, and this road is useless thus
's.
Summary of the invention
It is an object of the invention to provide a kind of shaft seal steam supply system, analyze through above, come for two road shaft seal steams
Source has problems, and manages from heat supply mother and connects a shaft seal steam source from the machine the most nearby.
The present invention adopts the following technical scheme that a kind of shaft seal steam supply system, mainly includes that boiler steam pipe, heat supply are female
Pipe, the first shaft seal steam device, the second shaft seal steam device and the 3rd shaft seal steam device composition；It is characterized in that: boiler steams
Being provided with above-mentioned three set shaft seal steam devices in the middle of steam pipe road and heat supply mother's pipe, heat supply mother's pipe tail end is provided with valve, and its vapour supply is used
Family uses.
First shaft seal steam device of the present invention is made up of some valves, high pressure cylinder, surge tank；Described Boiler Steam pipe
Connecing the first valve under road, the first valve connects the second valve, is divided into two tunnels after the second valve, and a road connects all after connecing the first valve
Pressure case, another road is divided into two tunnels, and a road connects surge tank after connecing the 3rd valve, a road connects high pressure cylinder, and high pressure cylinder connects the 4th valve
Door, the 4th valve connects surge tank, heat supply mother Guan Xiajie the first valve, and the first valve connects surge tank after connecing the first valve again,
Described high pressure cylinder divides two tunnels, a road to connect valve and connect surge tank, and another road connects the 5th valve, and the 5th valve connects the 6th valve
Door, the 6th valve connects heat supply mother pipe.
Second shaft seal steam device of the present invention is made up of some valves, intermediate pressure cylinder；Connect under described boiler steam pipe
First valve, the first valve connects the 7th valve, and the 7th valve connects the 8th valve, and the 8th valve connects intermediate pressure cylinder, and intermediate pressure cylinder connects the
Nine valves, the 9th valve connects the first valve, and the first valve connects heat supply mother pipe.
3rd shaft seal steam device of the present invention is made up of some valves, high pressure cylinder, surge tank；Described Boiler Steam pipe
Connecing the first valve under road, the first valve connects the second valve, is divided into two tunnels after the second valve, and a road connects all after connecing the first valve
Pressure case, another road is divided into two tunnels, and a road connects surge tank after connecing the 3rd valve, a road connects high pressure cylinder, and high pressure cylinder connects the 4th valve
Door, the 4th valve connects surge tank, heat supply mother Guan Xiajie the first valve, and the first valve connects surge tank after connecing the first valve again,
Described high pressure cylinder divides two tunnels, a road to connect valve and connect surge tank, and another road connects the 5th valve, and the 5th valve connects the 6th valve
Door, the 6th valve connects heat supply mother pipe.
It is provided with a manometer between first shaft seal steam device the first valve of the present invention and the 3rd valve.
It is provided with a manometer between 3rd shaft seal steam device the first valve of the present invention and the 3rd valve.
First valve of the present invention is admission valve, is directly connected on boiler steam pipe and heat supply mother's pipe.
Second valve of the present invention is automatic throttle.
3rd valve of the present invention is that high pressure cylinder front axle seals valve.
4th valve of the present invention is high pressure cylinder rear shaft seal valve.
5th valve of the present invention is axle electrically operated valve.
6th valve of the present invention is gas outlet valve door.
7th valve of the present invention subtracts entrance electrically operated valve for double.
8th valve of the present invention subtracts pressure regulating valve for double.
9th valve of the present invention subtracts outlet electric valve door for double.
The invention have the advantage that for two shaft seal steam source, road existing problems, manage from the machine the most nearby from heat supply mother
Connect a shaft seal steam source；This road steam pressure, at about 20 times that about 0.6mpa is axle envelope steam pressure, facilitates operation adjustment temperature
Degree, about 300, just can meet axle envelope vapour requirement without desuperheat, in unit starting, with can be by initial steam during this road steam
Close, in day-to-day operation, keep this road resting state.Remain about 20kpa press against, it is ensured that when large area load and left alone without help machine
Come into operation in time, even if hot starting, hot start after the left alone without help machine of unit, also can use；When the urgent left alone without help machine of unit and hot starting, hot start, steam with new once again
Vapour for axle envelope vapour time, this road steam without closedown, other original pipelines also it goes without doing change, installation workload is the most not
Greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In the drawings, boiler steam pipe 1, heat supply mother's pipe the 2, first shaft seal steam device the 3, second shaft seal steam device 4 and
3rd shaft seal steam device 5, valve 6, the first valve 7, connect the second valve 8, surge tank 9, the 3rd valve 10, high pressure cylinder 11,
Four valves 12, the 5th valve 13, the 6th valve 14, the 7th valve 15, the 8th valve 16, intermediate pressure cylinder 17, the 9th valve 18;Survey
Pressure meter 19.
Detailed description of the invention
With embodiment, embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.Following example are used for
The present invention is described, but can not be used for limiting the scope of the present invention.
In describing the invention, except as otherwise noted, " multiple " are meant that two or more；Term " on ",
Orientation or the position relationship of the instruction such as D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", " afterbody " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
The device or the element that show indication must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of the present invention.Additionally, term " first ", " second ", " the 3rd " etc. be only used for describe purpose, and it is not intended that instruction or
Hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is connected ", " even
Connect " should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；It can be machine
Tool connects, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.
For the ordinary skill in the art, above-mentioned term in the present invention concrete can be understood with concrete condition
Implication.
A kind of shaft seal steam supply system, mainly include boiler steam pipe 1, heat supply mother's pipe the 2, first shaft seal steam device 3, the
Two shaft seal steam devices 4 and the 3rd shaft seal steam device 5 form；It is characterized in that: in boiler steam pipe 1 and heat supply mother's pipe 2
Between be provided with above-mentioned three set shaft seal steam devices, heat supply mother's pipe tail end is provided with valve 6, its vapour supply user use.
First shaft seal steam device of the present invention is made up of some valves, high pressure cylinder, surge tank；Described Boiler Steam pipe
Road connects the first valve 7 for 1 time, and the first valve 7 connects the second valve 8, is divided into two tunnels after the second valve 8, after a road connects the first valve 7
Connecting surge tank 9, another road is divided into two tunnels, and a road connects surge tank 9 after connecing the 3rd valve 10, a road connects high pressure cylinder 11, high
Cylinder pressure 11 connects the 4th valve 12, and the 4th valve 12 connects surge tank 9, and heat supply mother's pipe connects the first valve 7 for 2 times, and the first valve 7 connects again
Connecting surge tank 9,11 point of two tunnel of described high pressure cylinder after first valve 7, a road was connected valve and was connect surge tank 9, and another road connects
5th valve 13, the 5th valve 13 connects the 6th valve 14, and the 6th valve 14 connects heat supply mother's pipe 2；Described second shaft seal steam dress
Put 4 to be made up of some valves, intermediate pressure cylinder；Described boiler steam pipe connects the first valve 7 for 1 time, and the first valve 7 connects the 7th valve
15, the 7th valve 15 connects the 8th valve 16, and the 8th valve 16 connects intermediate pressure cylinder 17, and intermediate pressure cylinder 17 connects the 9th valve 18, the 9th valve
Door 18 connects the first valve 7, and the first valve 7 connects heat supply mother's pipe 2；Described 3rd shaft seal steam device by some valves, high pressure cylinder,
Surge tank forms；Described boiler steam pipe connects the first valve 7 for 1 time, and the first valve 7 connects the second valve 8, after the second valve 8
Being divided into two tunnels, a road connects surge tank 9 after connecing the first valve 7, and another road is divided into two tunnels, and a road connects all after connecing the 3rd valve 10
Pressure case 9, a road connects high pressure cylinder 11, and high pressure cylinder 11 connects the 4th valve 12, and the 4th valve 12 connects surge tank 9, heat supply mother's pipe 2 times
Connecing the first valve 7, the first valve 7 connects surge tank 9 after connecing the first valve 7 again, and 11 point of two tunnel of described high pressure cylinder, a road was connected
Valve connects surge tank 9, and another road connects the 5th valve 13, and the 5th valve 13 connects the 6th valve 14, and the 6th valve 14 connects heat supply
Female pipe 2.
It is provided with a manometer 19 between first shaft seal steam device the first valve of the present invention and the 3rd valve；Institute
State and be provided with a manometer between the 3rd shaft seal steam device the first valve and the 3rd valve；Described first valve is inlet valve
Door, is directly connected on boiler steam pipe and heat supply mother's pipe；Described second valve is automatic throttle；Described 3rd valve is high
Cylinder pressure front axle envelope valve；Described 4th valve is high pressure cylinder rear shaft seal valve；Described 5th valve is axle electrically operated valve；Described
Six valves are gas outlet valve door；Described 7th valve subtracts entrance electrically operated valve for double；Described 8th valve subtracts pressure regulating valve for double；Institute
State the 9th valve and subtract outlet electric valve door for double.
Claims (9)
1. a shaft seal steam supply system, mainly includes boiler steam pipe, heat supply mother pipe, the first shaft seal steam device, the second axle
Gland sealing steam supply device and the 3rd shaft seal steam device composition；It is characterized in that: be provided with in the middle of boiler steam pipe and heat supply mother's pipe
Stating three set shaft seal steam devices, heat supply mother's pipe tail end is provided with valve, and its vapour supply user uses.
A kind of shaft seal steam supply system the most according to claim 1, it is characterised in that: if described first shaft seal steam device by
Dryvalve door, high pressure cylinder, surge tank form；Connecing the first valve under described boiler steam pipe, the first valve connects the second valve, the
Being divided into two tunnels after two valves, a road connects surge tank after connecing the first valve, and another road is divided into two tunnels, and a road connects after connecing the 3rd valve
Connecing surge tank, a road connects high pressure cylinder, and high pressure cylinder connects the 4th valve, and the 4th valve connects surge tank, heat supply mother Guan Xiajie first
Valve, the first valve connects and connects surge tank after the first valve, and described high pressure cylinder divides two tunnels, a road to connect valve to connect and all press
Case, another road connects the 5th valve, and the 5th valve connects the 6th valve, and the 6th valve connects heat supply mother pipe.
A kind of shaft seal steam supply system the most according to claim 1, it is characterised in that: if described second shaft seal steam device by
Dryvalve door, intermediate pressure cylinder form；Connecing the first valve under described boiler steam pipe, the first valve connects the 7th valve, and the 7th valve connects
8th valve, the 8th valve connects intermediate pressure cylinder, and intermediate pressure cylinder connects the 9th valve, and the 9th valve connects the first valve, and the first valve connects
Heat supply mother manages.
A kind of shaft seal steam supply system the most according to claim 1, it is characterised in that: if described 3rd shaft seal steam device by
Dryvalve door, high pressure cylinder, surge tank form；Connecing the first valve under described boiler steam pipe, the first valve connects the second valve, the
Being divided into two tunnels after two valves, a road connects surge tank after connecing the first valve, and another road is divided into two tunnels, and a road connects after connecing the 3rd valve
Connecing surge tank, a road connects high pressure cylinder, and high pressure cylinder connects the 4th valve, and the 4th valve connects surge tank, heat supply mother Guan Xiajie first
Valve, the first valve connects and connects surge tank after the first valve, and described high pressure cylinder divides two tunnels, a road to connect valve to connect and all press
Case, another road connects the 5th valve, and the 5th valve connects the 6th valve, and the 6th valve connects heat supply mother pipe.
A kind of shaft seal steam supply system the most according to claim 2, it is characterised in that: described first shaft seal steam device first
A manometer it is provided with between valve and the 3rd valve.
A kind of shaft seal steam supply system the most according to claim 4, it is characterised in that: described 3rd shaft seal steam device first
A manometer it is provided with between valve and the 3rd valve.
7. according to a kind of shaft seal steam supply system described in claim 2 or 4, it is characterised in that: described first valve is inlet valve
Door, is directly connected on boiler steam pipe and heat supply mother's pipe；Described second valve is automatic throttle.
8. according to a kind of shaft seal steam supply system described in claim 2 or 4, it is characterised in that: described 3rd valve is high pressure cylinder
Front axle envelope valve；Described 4th valve is high pressure cylinder rear shaft seal valve；Described 5th valve is axle electrically operated valve；Described 6th valve
Door is gas outlet valve door.
A kind of shaft seal steam supply system the most according to claim 3, it is characterised in that: described 7th valve subtracts entrance electricity for double
Movable valve；Described 8th valve subtracts pressure regulating valve for double；Described 9th valve subtracts outlet electric valve door for double.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610465218.3A CN106121740B (en) | 2016-06-24 | 2016-06-24 | A kind of shaft seal steam supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610465218.3A CN106121740B (en) | 2016-06-24 | 2016-06-24 | A kind of shaft seal steam supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106121740A true CN106121740A (en) | 2016-11-16 |
| CN106121740B CN106121740B (en) | 2018-05-22 |
Family
ID=57268276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610465218.3A Active CN106121740B (en) | 2016-06-24 | 2016-06-24 | A kind of shaft seal steam supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106121740B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3604206A (en) * | 1968-07-31 | 1971-09-14 | Gen Electric | Shaft-sealing system for nuclear turbines |
| JP2001227303A (en) * | 2000-02-15 | 2001-08-24 | Fuji Electric Co Ltd | Shaft sealing device of steam turbine |
| CN201301730Y (en) * | 2008-10-30 | 2009-09-02 | 中国长江动力公司(集团) | Steam seal pressure adjusting device for steam seal system of turbine |
| CN203547804U (en) * | 2013-11-12 | 2014-04-16 | 万逵芳 | Airtight turbine shaft seal system |
| CN205135725U (en) * | 2015-10-14 | 2016-04-06 | 大唐保定热电厂 | Power plant's unit bearing seal supplies vapour device |
-
2016
- 2016-06-24 CN CN201610465218.3A patent/CN106121740B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3604206A (en) * | 1968-07-31 | 1971-09-14 | Gen Electric | Shaft-sealing system for nuclear turbines |
| JP2001227303A (en) * | 2000-02-15 | 2001-08-24 | Fuji Electric Co Ltd | Shaft sealing device of steam turbine |
| CN201301730Y (en) * | 2008-10-30 | 2009-09-02 | 中国长江动力公司(集团) | Steam seal pressure adjusting device for steam seal system of turbine |
| CN203547804U (en) * | 2013-11-12 | 2014-04-16 | 万逵芳 | Airtight turbine shaft seal system |
| CN205135725U (en) * | 2015-10-14 | 2016-04-06 | 大唐保定热电厂 | Power plant's unit bearing seal supplies vapour device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106121740B (en) | 2018-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10767513B2 (en) | Thermal electric power generator | |
| CN206035553U (en) | Cogeneration system of combined cycle | |
| CN207245763U (en) | A kind of high temperature gas cooled reactor Turbine Steam gland sealing steam supply system | |
| CN202209668U (en) | Steam supply system of auxiliary steam source of large thermal generator set | |
| CN106194297A (en) | The double branch road heating system of a kind of cogeneration turbine | |
| CN107664045A (en) | A kind of HTGR Turbine Steam gland sealing steam supply system and method | |
| CN205480920U (en) | System for power station unit auxiliary steam header utilizes local boiler to supply vapour | |
| CN108224392B (en) | Converter residual neat recovering system storage heater steam energy saving method | |
| CN203962061U (en) | Utilize exhaust heat boiler that the Gas-steam Combined Cycle unit of auxiliary steam is provided | |
| CN103670547B (en) | Method for enhancing heat supply capability of three-steam-exhaust 200MW turboset | |
| US11879365B2 (en) | Steam turbine plant and operation method, combined cycle plant and operation method | |
| KR20120131755A (en) | Turbine generator control apparatus of steam generating plant | |
| CN205445699U (en) | Steam turbine with degree of depth peak regulation function | |
| CN106121740A (en) | A kind of shaft seal steam supply system | |
| CN204283512U (en) | A kind of cogeneration turbine | |
| CN203835469U (en) | Turbine low-pressure shaft seal steam supply system | |
| CN202866911U (en) | Turbine high-pressure cylinder structure | |
| CN206129323U (en) | A twin -screw expander for low temperature waste heat recovery system | |
| CN104594964A (en) | Novel single-shaft natural gas combined cycle heat supply unit system | |
| CN212673163U (en) | Steam heating starting system of once-through boiler | |
| CN212132387U (en) | Two-stage steam extraction type medium-temperature and medium-pressure waste incineration power generation system | |
| Duan et al. | Technical and economic analysis of 150MW turbine unit about two reconstruction modes for high back pressure heating | |
| CN211924258U (en) | Energy-saving and efficient steam seal steam supply system of steam turbine | |
| CN207406389U (en) | A kind of biomass high-temperature super-pressure reheating generating set quickly opens furnace system | |
| CN206267895U (en) | Every the cogeneration turbine that level adjustment is drawn gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180810 Address after: 100089 42 North Street, Xizhimen, Haidian District, Beijing. Co-patentee after: China energy saving (Linyi) environmental protection energy Co., Ltd. Patentee after: China Environment Protection Group Co Ltd Address before: 276000 west section of Dashan Road, Linyi, Linyi, Shandong Patentee before: China energy saving (Linyi) environmental protection energy Co., Ltd. |
|
| TR01 | Transfer of patent right |