CN209108894U - A kind of mechanism for preventing generator hydrogen purity from reducing - Google Patents
A kind of mechanism for preventing generator hydrogen purity from reducing Download PDFInfo
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- CN209108894U CN209108894U CN201821675567.9U CN201821675567U CN209108894U CN 209108894 U CN209108894 U CN 209108894U CN 201821675567 U CN201821675567 U CN 201821675567U CN 209108894 U CN209108894 U CN 209108894U
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Abstract
The utility model relates to hydrogen cooled generator fields, specifically disclose a kind of mechanism for preventing generator hydrogen purity from reducing, it include: the first balanced valve and the second balanced valve, the input terminal of first balanced valve and the input terminal of the second balanced valve pass through a pipeline road respectively and are connected to hydrogen side oil inlet end, the output end of the output end of first balanced valve and the second balanced valve with encourage end bearing hydrogen-side seal oil oil inlet pipe and vapour end bearing hydrogen-side seal oil oil inlet pipe is connected to；First pneumatic control valve is equipped with first pneumatic control valve on every pipeline road；Oil pressure sensor is respectively equipped with oil pressure sensor in first balanced valve and the second balanced valve；And PLC controller, it is connect respectively with first pneumatic control valve and oil pressure sensor, which improves generator hydrogen purity, not only ensure that the safety of generator but also has improved its economy.
Description
Technical field
The utility model belongs to field, in particular to a kind of mechanism for preventing generator hydrogen purity from reducing.
Background technique
General large turbo-type generator using interior cold, the outer cold water hydrogen to have both at the same time it is hydrogen-cooled but by the way of, i.e. generator
It is cooling for hydrogen surface to use stator winding internal water cooling, rotor windings internal hydrogen cooling, stator core and its structural member, and hydrogen is close
Envelope mostly uses double-flow se al oil.Then gas density increases for hydrogen purity decline, loss can be caused to increase, i.e., generator is imitated
Rate decline.According to relevant information, 300mw generating set, hydrogen purity decline 1%, wind moussing loss increases by 11%, extrapolates loss
Increase 100kw or so, generator hydrogen purity is being universal phenomenon lower than rated value 2%-3%.
The reason of analysis generator hydrogen purity declines, generally has the following: the hydrogen side balanced valve work of sealing oil system
Make it is abnormal cause the excessive hydrogen side string oil that makes to have leisure in sealing bearing bush gap, and sealing bearing bush gap is excessive causes sealing bearing bush crossfire Seal Oil
Between string oil mass and sealing bearing bush among ring and axis gap at cube relationship, gap is smaller, the easier sealing of hydrogen, empty, hydrogen
Crossfire amount between side seal oil also can be smaller, but sealing bearing bush gap is excessive it will cause poor sealing, causes the impurity such as air mixed
Enter in hydrogen；Hydrogen drying unit operation is abnormal, causes hydrogen humidity excessive, hydrogen purity is low.
Utility model content
The purpose of this utility model is to provide a kind of mechanisms for preventing generator hydrogen purity from reducing, to overcome
Because balanced valve work it is not normal caused by hydrogen purity reduce defect.
To achieve the above object, the utility model provides a kind of mechanism for preventing generator hydrogen purity from reducing,
Include:
First balanced valve and the second balanced valve, the input terminal of first balanced valve and the input terminal difference of the second balanced valve
Be connected to by a pipeline road with hydrogen side oil inlet end, the output end of the output end of first balanced valve and the second balanced valve with encourage
End bearing hydrogen-side seal oil oil inlet pipe is connected to vapour end bearing hydrogen-side seal oil oil inlet pipe；
First pneumatic control valve is equipped with first pneumatic control valve on every pipeline road；
Oil pressure sensor is respectively equipped with oil pressure sensor in first balanced valve and the second balanced valve；And
PLC controller is connect with first pneumatic control valve and oil pressure sensor respectively, for according to the oil pressure
The oil pressure value of sensor is to control the on-off of first pneumatic control valve.
It preferably, further include baroceptor in above-mentioned technical proposal, the baroceptor is set in generator, institute
Baroceptor is stated to connect with the PLC controller.
Preferably, in above-mentioned technical proposal, the output end of first balanced valve, the output end of the second balanced valve pass through three
Port valve with encourage end bearing hydrogen-side seal oil oil inlet pipe, vapour end bearing hydrogen-side seal oil oil inlet pipe is connected to.
It preferably, further include warning device in above-mentioned technical proposal comprising display screen and alarm, the display screen
It is connect respectively with the PLC controller with alarm.
It preferably, further include two hydrogen dryers and humidity sensor in above-mentioned technical proposal, two hydrogen are dry
The hydrogen that dry device accesses generator by being equipped with the pipeline parallel connection of the second pneumatic control valve is passed through in pipeline, the humidity sensor
The PLC controller is separately connected with the second pneumatic control valve.
Compared with prior art, the utility model has the following beneficial effects:
1. the mechanism for preventing generator hydrogen purity from reducing in the utility model, introduce two balanced valves makes in turn
With another balanced valve can be automatically switched to when one of balanced valve, while alarming, to prevent because of balanced valve
It is not normal to cause tightness bad so that the case where hydrogen purity declines, improves generator hydrogen purity, it both ensure that hair
The safety of motor improves its economy again.
2. the utility model introduces two hydrogen dryers and uses in turn, avoids hydrogen drying unit operation abnormal, lead
Cause hydrogen humidity excessive, hydrogen purity is low.
Detailed description of the invention
Fig. 1 is the structure chart of the mechanism according to the present utility model for preventing generator hydrogen purity from reducing.
Main appended drawing reference explanation:
The first balanced valve of 1-, the first pneumatic control valve of 2-, 3- oil pressure sensor, 4-PLC controller, 5- display screen, 6- hand
Dynamic valve, 7- encourage end bearing hydrogen-side seal oil oil inlet pipe, 8- vapour end bearing hydrogen-side seal oil oil inlet pipe.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
As shown in Figure 1, a kind of mechanism for preventing generator hydrogen purity from reducing, comprising: the first balanced valve 1, second
Balanced valve, the first pneumatic control valve 2, oil pressure sensor 3, PLC controller 4, baroceptor, warning device, hydrogen dryer
And humidity sensor, the input terminal of the first balanced valve 1 and the input terminal of the second balanced valve pass through a pipeline road 9 and hydrogen side respectively
The output end of oil inlet end connection, the output end of the first balanced valve 1 and the second balanced valve by triple valve with to encourage end bearing hydrogen side close
Oil sealing oil inlet pipe 7 is connected to vapour end bearing hydrogen-side seal oil oil inlet pipe 8；The first pneumatic adjusting is equipped on every pipeline road 9
Valve 2；Oil pressure sensor 3 is respectively equipped in first balanced valve 1 and the second balanced valve；PLC controller 4 is pneumatically adjusted with first respectively
Valve 2 and oil pressure sensor 3 connect, and warning device includes display screen 5 and alarm, and display screen 5 and alarm are controlled with PLC respectively
Device 4 connects, and under normal circumstances, carries out logical oil using the first balanced valve 1, and oil pressure sensor 3 then obtains the first balanced valve 1 in real time
Fuel injection pressure signal be transmitted to PLC controller 4, by display screen 5 show oil pressure value, when PLC controller 4 judges that fuel injection pressure signal is abnormal
When (conventional comparison method etc. can be used in judgment method) then control the first balanced valve 1 the first pneumatic control valve 2 disconnection and into
Row alarm, while control the second balanced valve the first pneumatic control valve open, thus avoid because balanced valve it is not normal caused by tightness
It is bad so that the case where hydrogen purity declines.
In the embodiment, baroceptor is introduced, baroceptor is set in generator, and baroceptor and PLC are controlled
Device connection, at this time baroceptor obtain pressure data can be converted by PLC controller after in display screen display, work
When personnel can whether there is normal range (NR) between air pressure and sealing oil pressure in timing comparing generator, with to provide data when overhauling
It supports.
Further, at hydrogen gas end, two hydrogen dryers is quoted and pass through the pipeline equipped with the second pneumatic control valve
The hydrogen of parallel connection access generator is passed through in pipeline, and humidity sensor and the second pneumatic control valve are separately connected PLC controller, just
Hydrogen is dried using a hydrogen dryer when often work, when corresponding humidity sensor detects this hydrogen dryer
It is then closed by PLC controller when humidity is larger, opens simultaneously second pneumatic control valve of another spare hydrogen dryer,
To guarantee the aridity of hydrogen, avoids being mixed into moisture and cause hydrogen impure.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (5)
1. a kind of mechanism for preventing generator hydrogen purity from reducing characterized by comprising
First balanced valve and the second balanced valve, the input terminal of first balanced valve and the input terminal of the second balanced valve pass through respectively
One pipeline road is connected to hydrogen side oil inlet end, the output end of the output end of first balanced valve and the second balanced valve and encourages end axis
Hydrogen-side seal oil oil inlet pipe is held to be connected to vapour end bearing hydrogen-side seal oil oil inlet pipe；
First pneumatic control valve is equipped with first pneumatic control valve on every pipeline road；
Oil pressure sensor is respectively equipped with oil pressure sensor in first balanced valve and the second balanced valve；
PLC controller is connect with first pneumatic control valve and oil pressure sensor respectively, for being sensed according to the oil pressure
The oil pressure value of device is to control the on-off of first pneumatic control valve.
2. the mechanism according to claim 1 for preventing generator hydrogen purity from reducing, which is characterized in that further include gas
Pressure sensor, the baroceptor are set in generator, and the baroceptor is connect with the PLC controller.
3. the mechanism according to claim 1 for preventing generator hydrogen purity from reducing, which is characterized in that described first
The output end of balanced valve, the second balanced valve output end by triple valve and encouraging end bearing hydrogen-side seal oil oil inlet pipe, vapour end axis
Hold the connection of hydrogen-side seal oil oil inlet pipe.
4. the mechanism according to claim 1 for preventing generator hydrogen purity from reducing, which is characterized in that further include report
Alarm device comprising display screen and alarm, the display screen and alarm are connect with the PLC controller respectively.
5. the mechanism according to claim 1 for preventing generator hydrogen purity from reducing, which is characterized in that further include two
Platform hydrogen dryer and humidity sensor, two hydrogen dryers pass through the pipeline equipped with the second pneumatic control valve and connection
The hydrogen for entering generator is passed through in pipeline, and the humidity sensor and the second pneumatic control valve are separately connected the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821675567.9U CN209108894U (en) | 2018-10-16 | 2018-10-16 | A kind of mechanism for preventing generator hydrogen purity from reducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821675567.9U CN209108894U (en) | 2018-10-16 | 2018-10-16 | A kind of mechanism for preventing generator hydrogen purity from reducing |
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| Publication Number | Publication Date |
|---|---|
| CN209108894U true CN209108894U (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821675567.9U Active CN209108894U (en) | 2018-10-16 | 2018-10-16 | A kind of mechanism for preventing generator hydrogen purity from reducing |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394011A (en) * | 2020-10-26 | 2021-02-23 | 广西投资集团北海发电有限公司 | Coal mill coal powder fineness monitoring device and automatic adjusting method |
| US20230287591A1 (en) * | 2022-03-10 | 2023-09-14 | Bloom Energy Corporation | Modular scalability of soec stamp and compression |
-
2018
- 2018-10-16 CN CN201821675567.9U patent/CN209108894U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394011A (en) * | 2020-10-26 | 2021-02-23 | 广西投资集团北海发电有限公司 | Coal mill coal powder fineness monitoring device and automatic adjusting method |
| US20230287591A1 (en) * | 2022-03-10 | 2023-09-14 | Bloom Energy Corporation | Modular scalability of soec stamp and compression |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 536017 the Guangxi Zhuang Autonomous Region Beihai city Tieshan shitoubu port Patentee after: Guangxi Investment Group Beihai Power Generation Co., Ltd Address before: 536017 the Guangxi Zhuang Autonomous Region Beihai city Tieshan shitoubu port Patentee before: SDIC BEIBUWAN ELECTRIC POWER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |