CN107701246A - Turbine low pressure cylinder axle envelope spray desuperheating device - Google Patents
Turbine low pressure cylinder axle envelope spray desuperheating device Download PDFInfo
- Publication number
- CN107701246A CN107701246A CN201711203927.5A CN201711203927A CN107701246A CN 107701246 A CN107701246 A CN 107701246A CN 201711203927 A CN201711203927 A CN 201711203927A CN 107701246 A CN107701246 A CN 107701246A
- Authority
- CN
- China
- Prior art keywords
- lead screw
- shower nozzle
- hollow lead
- desuperheat
- seat
- 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.)
- Pending
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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/002—Cleaning of turbomachines
-
- 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
- F01D25/12—Cooling
Abstract
The invention discloses a kind of turbine low pressure cylinder axle envelope spray desuperheating device, including desuperheat seat and shower nozzle, isolating device, sealing device and leading screw frame are removably connected with successively in desuperheat seat upper port, hollow lead screw is installed by screw on leading screw frame, hollow lead screw sequentially passes through sealing device and isolating device and is inserted into desuperheat seat, shower nozzle is arranged on hollow lead screw lower end and connected with hollow lead screw centre bore, can be moved to shower nozzle above the flashboard in isolating device after hollow lead screw rotation.Beneficial effect is：Because shower nozzle is arranged on hollow lead screw lower end and is connected with hollow lead screw centre bore; shower nozzle can be moved to above the flashboard in isolating device after hollow lead screw rotation; therefore when steam supply overtemperature needs to carry out cleaning and dredging to shower nozzle, shower nozzle is moved to above the flashboard in isolating device by rotatable hollow leading screw; then disassembly, cleaning can be carried out to shower nozzle by isolating device being closed; handled during cleaning without shutdown, can realize and online disassembly, cleaning are carried out to shower nozzle.
Description
Technical field
The present invention relates to a kind of water injector, more particularly to a kind of turbine low pressure cylinder axle envelope spray desuperheating device.
Background technology
Existing turbine low pressure cylinder axle envelope, which needs to be passed through steam, to be sealed, and the steam that low pressure (LP) cylinder axle envelope is passed through needs logical
Cross a fixation spray desuperheating device and carry out desuperheat, to prevent axle envelope from being damaged because of steam superheating.Due to fixed spray desuperheating device
There is impurity in the desuperheating water being passed through, easily cause shower nozzle Partial Blocking, reduce temperature lowering effect, cause low pressure (LP) cylinder shaft seal steam to surpass
Temperature；Therefore need to carry out cleaning and dredging to shower nozzle immediately when steam supply overtemperature.But because shower nozzle can not be dredged in operation,
Only shutting down to be handled, and the safe operation to unit can produce larger hidden danger.
The content of the invention
The technical problems to be solved by the invention are to provide for one kind and handled without shutdown, and shower nozzle can be torn open online
Unload the turbine low pressure cylinder axle envelope spray desuperheating device of cleaning.
To solve the above problems, the present invention adopts the following technical scheme that：
A kind of turbine low pressure cylinder axle envelope spray desuperheating device, including desuperheat seat and shower nozzle, the desuperheat seat are threeway shape, its
It is characterized in that：Isolating device, sealing device and leading screw frame are removably connected with successively in desuperheat seat upper port, on leading screw frame
Hollow lead screw is provided with by screw, hollow lead screw sequentially passes through sealing device and isolating device and is inserted into desuperheat seat, institute
Shower nozzle is stated installed in hollow lead screw lower end and connect with hollow lead screw centre bore, hollow lead screw shower nozzle can be moved to after rotating every
Above the flashboard in device.
As further preferred, the isolating device is gate valve.
As further preferred, the sealing device is by seal receptacle and is located between seal receptacle inner chamber and hollow lead screw
Seal assembly is formed.
As further preferred, the hollow lead screw top is leading screw, bottom is polished rod.
As further preferred, corresponded in the desuperheat seat and be provided with hollow sandwich in the middle part of the cavity of flowing steam, in desuperheat
The inner chamber that hollow sandwich is corresponded in seat is embedded with stainless steel bushing, to improve the corrosion resistance of desuperheat seat.
As further preferred, handwheel is installed in leading screw upper end.
The beneficial effects of the invention are as follows：Because shower nozzle is arranged on hollow lead screw lower end and is connected with hollow lead screw centre bore,
Shower nozzle can be moved to above the flashboard in isolating device after hollow lead screw rotation, therefore when steam supply overtemperature needs to carry out shower nozzle
Shower nozzle is moved to above the flashboard in isolating device by rotatable hollow leading screw during cleaning and dredging, is then by isolating device closing
Disassembly, cleaning can be carried out to shower nozzle, be handled without shutdown during cleaning, can realize and online disassembly, cleaning are carried out to shower nozzle.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：Desuperheat seat 1, shower nozzle 2, isolating device 3, seal receptacle 4, screw 5, handwheel 6, hollow lead screw 7, leading screw frame 8 are close
Sealing assembly 9, stainless steel bushing 10.
Embodiment
As shown in figure 1, a kind of turbine low pressure cylinder axle envelope spray desuperheating device of the present invention, including a desuperheat seat
1, the desuperheat seat 1 is threeway shape, and isolating device is removably connected with successively by the bolt of circumference uniform distribution in the upper port of desuperheat seat 1
3rd, sealing device and leading screw frame 8, the hollow lead screw 7 arranged vertically is installed on leading screw frame 8 by screw 5, for being passed through drop
Warm water.It provided with externally threaded leading screw, bottom is polished rod that the top of hollow lead screw 7, which is,.The lower end of hollow lead screw 7 sequentially passes through sealing dress
Put and isolating device 3 and be inserted into desuperheat seat 1, shower nozzle 2 is connected with the lower end of hollow lead screw 7, the shower nozzle 2 is pacified by screw thread
Connected mounted in the lower end of hollow lead screw 7 and with the centre bore of hollow lead screw 7, shower nozzle 2 can be moved to isolation dress by hollow lead screw 7 after rotating
Put above the flashboard in 3.
The isolating device 3 is hand sluice valve.The sealing device be by seal receptacle 4 and be embedded in the inner chamber of seal receptacle 4 with
Seal assembly 9 between hollow lead screw 7 is formed.
Corresponded in the desuperheat seat 1 and be provided with hollow sandwich in the middle part of the cavity of flowing steam, hollow folder is corresponded in desuperheat seat 1
The inner chamber of layer is embedded with stainless steel bushing 10, to improve the corrosion resistance of desuperheat seat 1.Handwheel 6 is installed in the leading screw upper end,
In order to operate.
During work, by the sealing welding of desuperheat seat 1 on steam pipework, cold water is connected by the upper end of hollow lead screw 7, cold water leads to
Cross hollow lead screw 7 to spray through shower nozzle 2, the steam for flowing through desuperheat seat 1 is cooled, when shower nozzle 2, which blocks, causes steam overtemperature,
Hollow lead screw 7 is reversely rotated by handwheel 6, makes hollow lead screw 7 drive shower nozzle 2 to move up, is blocked when shower nozzle 2 moves to seal receptacle 4
It is motionless, now isolating device 3 is closed, then unload bottom sealing socket 4 to carry out cleaning treatment to shower nozzle, now steamed without closing
Vapour.Put in back after shower nozzle cleaning treatment.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the legend with description.
Claims (6)
1. a kind of turbine low pressure cylinder axle envelope spray desuperheating device, including desuperheat seat and shower nozzle, the desuperheat seat is threeway shape, and it is special
Sign is：Isolating device, sealing device and leading screw frame are removably connected with successively in desuperheat seat upper port, pass through silk on leading screw frame
Mother is provided with hollow lead screw, and hollow lead screw sequentially passes through sealing device and isolating device and is inserted into desuperheat seat, the shower nozzle
Connected installed in hollow lead screw lower end and with hollow lead screw centre bore, shower nozzle isolating device can be moved to after hollow lead screw rotation
Above interior flashboard.
2. turbine low pressure cylinder axle envelope spray desuperheating device according to claim 1, it is characterized in that：The isolating device is
Gate valve.
3. turbine low pressure cylinder axle envelope spray desuperheating device according to claim 1, it is characterized in that：The sealing device is
It is made up of seal receptacle and the seal assembly being located between seal receptacle inner chamber and hollow lead screw.
4. turbine low pressure cylinder axle envelope spray desuperheating device according to claim 1, it is characterized in that：On the hollow lead screw
Portion is leading screw, bottom is polished rod.
5. turbine low pressure cylinder axle envelope spray desuperheating device according to claim 1, it is characterized in that：It is right in the desuperheat seat
Answer and be provided with hollow sandwich in the middle part of the cavity of flowing steam, the inner chamber that hollow sandwich is corresponded in desuperheat seat is embedded with stainless steel lining
Set, to improve the corrosion resistance of desuperheat seat.
6. the turbine low pressure cylinder axle envelope spray desuperheating device according to claim 1 or 4, it is characterized in that：In leading screw upper end
Handwheel is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203927.5A CN107701246A (en) | 2017-11-27 | 2017-11-27 | Turbine low pressure cylinder axle envelope spray desuperheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203927.5A CN107701246A (en) | 2017-11-27 | 2017-11-27 | Turbine low pressure cylinder axle envelope spray desuperheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701246A true CN107701246A (en) | 2018-02-16 |
Family
ID=61180996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711203927.5A Pending CN107701246A (en) | 2017-11-27 | 2017-11-27 | Turbine low pressure cylinder axle envelope spray desuperheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701246A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389605A (en) * | 2021-07-19 | 2021-09-14 | 西安热工研究院有限公司 | System and design method for improving steam supply safety of low-pressure shaft seal of thermal power plant |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336451A (en) * | 1993-01-22 | 1994-08-09 | Itt Rayonier, Inc. | Desuperheater apparatus and method |
| CN101625116A (en) * | 2009-08-05 | 2010-01-13 | 无锡卓尔阀业有限公司 | High-temperature and high-pressure positive action desuperheater |
| CN201433795Y (en) * | 2009-04-10 | 2010-03-31 | 中盐皓龙盐化有限责任公司 | Special scale eliminator for turbine |
| CN201448126U (en) * | 2009-07-16 | 2010-05-05 | 高邮市龙华机械制造厂 | Electronic type steam seal regulator |
| CN202470032U (en) * | 2012-02-15 | 2012-10-03 | 河北省电力勘测设计研究院 | Variable-flow high-speed attemperator nozzle |
| CN207554122U (en) * | 2017-11-27 | 2018-06-29 | 辽宁大唐国际锦州热电有限责任公司 | Turbine low pressure cylinder axle envelope spray desuperheating device |
-
2017
- 2017-11-27 CN CN201711203927.5A patent/CN107701246A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336451A (en) * | 1993-01-22 | 1994-08-09 | Itt Rayonier, Inc. | Desuperheater apparatus and method |
| CN201433795Y (en) * | 2009-04-10 | 2010-03-31 | 中盐皓龙盐化有限责任公司 | Special scale eliminator for turbine |
| CN201448126U (en) * | 2009-07-16 | 2010-05-05 | 高邮市龙华机械制造厂 | Electronic type steam seal regulator |
| CN101625116A (en) * | 2009-08-05 | 2010-01-13 | 无锡卓尔阀业有限公司 | High-temperature and high-pressure positive action desuperheater |
| CN202470032U (en) * | 2012-02-15 | 2012-10-03 | 河北省电力勘测设计研究院 | Variable-flow high-speed attemperator nozzle |
| CN207554122U (en) * | 2017-11-27 | 2018-06-29 | 辽宁大唐国际锦州热电有限责任公司 | Turbine low pressure cylinder axle envelope spray desuperheating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389605A (en) * | 2021-07-19 | 2021-09-14 | 西安热工研究院有限公司 | System and design method for improving steam supply safety of low-pressure shaft seal of thermal power plant |
| CN113389605B (en) * | 2021-07-19 | 2023-05-30 | 西安热工研究院有限公司 | System and design method for improving steam supply safety of low-pressure shaft seal of thermal power plant |
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