CN204299626U - A kind of Steam Turbine shaft seal pressure equalizing box device - Google Patents
A kind of Steam Turbine shaft seal pressure equalizing box device Download PDFInfo
- Publication number
- CN204299626U CN204299626U CN201420782388.0U CN201420782388U CN204299626U CN 204299626 U CN204299626 U CN 204299626U CN 201420782388 U CN201420782388 U CN 201420782388U CN 204299626 U CN204299626 U CN 204299626U
- Authority
- CN
- China
- Prior art keywords
- steam
- pressure
- shaft seal
- low
- box device
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of Steam Turbine shaft seal pressure equalizing box device, comprise surge tank casing, the female pipeline of the axle gland sealing steam supply pipeline be connected on casing, main steam pipe road, low-pressure steam and the desuperheat water pipe that is connected with main steam pipe road, the female pipeline of its low pressure steam is connected with a live steam source steam line, this live steam source steam line is provided with a valve; The utility model can make surge tank to low-pressure steam pressure, the temperature stabilization of shaft seal steam, and amplitude of variation is little, and easy to operate, safety, saves manpower simultaneously.
Description
Technical field
The utility model relates to a kind of Steam Turbine shaft seal pressure equalizing box device, particularly in the improvement of Steam Turbine shaft seal surge tank connecting pipeline structure.
Background technology
Surge tank is as a middle device of Steam Turbine mesohigh shaft seal and low pressure shaft seal; main operational principle is that the steam when Steam Turbine is normally run, a part for high pressure shaft seal having been done merit delivers to low pressure shaft seal place, when starting shooting and shutting down, initial steam is delivered to high-low pressure both sides and carries out packing.Existing surge tank has distinct disadvantage: start shooting, shut down and underrun time, low by the low-pressure steam flow of one-level extraction steam pipe, the needs of shaft seal steam can not be met, so often need to use main steam to carry out shaft seal steam, and when using main steam to shaft seal steam, due to main steam pressure higher (about 4.9MPa), and the shaft seal steam pressure of surge tank (0.02-0.03MPa) on the low side, manpower is needed to carry out pressure adjusting, work heavy inconvenience and control ratio is more difficult, need repeatedly to adjust, waste of manpower; Secondly the temperature of main steam is higher, and greatly about about 435 DEG C, and surge tank temperature will remain in 250 DEG C, needs artificial desuperheating water to adjust cooling, adds the workload of staff; When use one-level is drawn gas to shaft seal steam and is use pressure regulator, for preventing swollen difference on the occasion of increase, also need to adjust at any time along with the height of electric load evaporation capacity for engine, complicated operation, workload are heavy.
Summary of the invention
The purpose of this utility model is to provide a kind of Steam Turbine shaft seal pressure equalizing box device, this device utilizes an initial steam steam line be connected with the female pipe of low-pressure steam to reach the low-pressure steam pressure, the temperature stabilization that make surge tank to shaft seal steam, amplitude of variation is little, easy to operate, safety, save manpower, the technical scheme in the invention for solving the technical problem is simultaneously:
A kind of Steam Turbine shaft seal pressure equalizing box device, comprise surge tank casing, the female pipeline of the axle gland sealing steam supply pipeline be connected on casing, main steam pipe road, low-pressure steam and the desuperheat water pipe that is connected with main steam pipe road, its low pressure steam mother pipeline is connected with a live steam source steam line.
Described live steam source steam line is provided with a valve.
Described live steam source steam line is preferably DN125, i.e. ￠=140mm.
The utility model uses the steam line in live steam source by interpolation one on the female pipeline of low-pressure steam on the basis of the surge tank of existing Steam Turbine.Like this, when Steam Turbine opens machine, if warm-up period is not enough, main steam pipe can be opened and use main steam to carry out fast lifting temperature, when temperature reaches 250 DEG C, switch to low-pressure steam.If warm-up period is sufficient, can open separately initial steam steam line and use the female pipeline steam supply of low-pressure steam, after adjusting, pressure, temperature variation is minimum, does not need special messenger to nurse and swollen difference just can be prevented on the occasion of increase.Main steam pipe road can be closed when halt turbines or underrun and only use the female pipeline of low-pressure steam, just can ensure that steam supply is stablized without the need to other operation bidirectionals.
The beneficial effects of the utility model are: compared with prior art, a kind of Steam Turbine shaft seal pressure-equalizing device of the present utility model can make surge tank to low-pressure steam pressure, the temperature stabilization of shaft seal steam, amplitude of variation is little, and easy to operate, safety, saves manpower simultaneously.
Accompanying drawing explanation
Fig. 1, be the utility model general structure schematic diagram.
Wherein, shaft seal steam pipeline, 5 rear shaft seal steam lines before 1 surge tank casing, 2 main steam pipe roads, 2.1 desuperheat water pipes, the female pipeline of 3 low-pressure steams, 3.1 live steam source steam lines, 3.2 valves, 4.
Detailed description of the invention
A kind of Steam Turbine shaft seal pressure equalizing box device, as shown in Figure 1, comprise surge tank casing 1, the axle gland sealing steam supply pipeline 4 be connected on casing, 5, main steam pipe road 2, the female pipeline 3 of low-pressure steam and the desuperheat water pipe 2.1 that is connected with main steam pipe road 2, the female pipeline 3 of its low pressure steam being connected with a root type number is DN125, the i.e. live steam source steam line 3.1 of ￠=140mm, this live steam source steam line 3.1 is provided with a valve 3.2.When Steam Turbine opens machine, if warm-up period is not enough, main steam pipe 2 can be opened and use main steam to carry out fast lifting temperature, when temperature reaches 250 DEG C, switch to low-pressure steam; If warm-up period is sufficient, can open separately initial steam steam line 3.1 and use female pipeline 3 steam supply of low-pressure steam, after adjusting, pressure, temperature variation amplitude is little, does not need special messenger to nurse and swollen difference just can be prevented on the occasion of increase.2, main steam pipe road can be closed when halt turbines or underrun and use the female pipeline 3 of low-pressure steam and initial steam steam line 3.1 steam supply on it, just can ensure that steam supply is stablized without the need to other operation bidirectionals.
Claims (3)
1. a Steam Turbine shaft seal pressure equalizing box device, comprise surge tank casing (1), the axle gland sealing steam supply pipeline (4 be connected on casing, 5), main steam pipe road (2), the female pipeline (3) of low-pressure steam and the desuperheat water pipe (2.1) that is connected with main steam pipe road (2), it is characterized in that: described low-pressure steam mother's pipeline (3) is connected with live steam source steam line (3.1).
2. a kind of Steam Turbine shaft seal pressure equalizing box device according to claim 1, described live steam source steam line (3.1) is provided with a valve (3.2).
3. a kind of Steam Turbine shaft seal pressure equalizing box device according to claim 1, described live steam source steam line (3.1) is preferably DN125, i.e. ￠=140mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420782388.0U CN204299626U (en) | 2014-12-13 | 2014-12-13 | A kind of Steam Turbine shaft seal pressure equalizing box device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420782388.0U CN204299626U (en) | 2014-12-13 | 2014-12-13 | A kind of Steam Turbine shaft seal pressure equalizing box device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299626U true CN204299626U (en) | 2015-04-29 |
Family
ID=53105172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420782388.0U Expired - Fee Related CN204299626U (en) | 2014-12-13 | 2014-12-13 | A kind of Steam Turbine shaft seal pressure equalizing box device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014195A (en) * | 2019-12-17 | 2020-04-17 | 安徽昊源化工集团有限公司 | Method for accelerating purging of high-temperature and high-pressure steam pipeline by using low-pressure steam |
-
2014
- 2014-12-13 CN CN201420782388.0U patent/CN204299626U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014195A (en) * | 2019-12-17 | 2020-04-17 | 安徽昊源化工集团有限公司 | Method for accelerating purging of high-temperature and high-pressure steam pipeline by using low-pressure steam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105134545A (en) | Water drawing device and water drawing method using water drawing device | |
| CN203285493U (en) | Steam turbine multi-steam source automatic switching control system | |
| IN2014DE00595A (en) | ||
| IN2014DE00353A (en) | ||
| CN204299626U (en) | A kind of Steam Turbine shaft seal pressure equalizing box device | |
| CN205135725U (en) | Power plant's unit bearing seal supplies vapour device | |
| CN203628280U (en) | Natural gas vent device | |
| CN205137083U (en) | A pressure regulating box for natural gas air feed | |
| CN206942815U (en) | Steam Turbine attachment structure | |
| CN204629093U (en) | A kind of steam Small Flow Control System | |
| CN203906014U (en) | Steam supplying system of turbine low-pressure cylinder end shaft seal | |
| CN204478860U (en) | Plant condenser three grades of Roots's variable frequency pump group energy efficiency vacuum maintain system | |
| CN202047869U (en) | Steam turbine set steam sealing pressure equalizing box device | |
| CN204717015U (en) | Refrigeration plant straight-through stop valve | |
| CN105133698A (en) | Energy gathering pumping device and pumping method thereof | |
| CN204253253U (en) | Water turbine expansion joint structure | |
| CN204518721U (en) | A kind of irrigation system utilizing low temperature snow-broth | |
| CN204041126U (en) | Hydrogen-cooled steam turbine power generation group sealing oil system | |
| CN204692671U (en) | Industrial refrigeration right-angle type safety check | |
| CN205189971U (en) | 600MW grade direct air cooling unit bearing seal overflow vapor recovery system | |
| CN203797349U (en) | Impeller type coal slurry pipeline splitter | |
| CN204403490U (en) | Self-contained pressure regulator | |
| CN204343395U (en) | Bicavate constant pressure water supply equipment | |
| CN204553320U (en) | A kind of modified model gland seal system | |
| CN204530851U (en) | Well pressurization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20161213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |