CN201090251Y - Minitype turbine bulge difference protective equipment - Google Patents
Minitype turbine bulge difference protective equipment Download PDFInfo
- Publication number
- CN201090251Y CN201090251Y CN200720014544.9U CN200720014544U CN201090251Y CN 201090251 Y CN201090251 Y CN 201090251Y CN 200720014544 U CN200720014544 U CN 200720014544U CN 201090251 Y CN201090251 Y CN 201090251Y
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- steam turbine
- probes
- utility
- bracket
- support
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- Expired - Lifetime
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- 230000001681 protective effect Effects 0.000 title abstract description 12
- 239000000523 sample Substances 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model belongs to a device for protecting the differential expansion of a steam turbine, particularly relating to a device for protecting the differential expansion of a small-sized steam turbine. The utility model is characterized in that the device is composed of three probes, three front units and three controllers; the probes are arranged in parallel on a bracket arranged on the same measuring part of the steam turbine and are respectively used for measurement displaying, alarming output and 2-out-of-3 logical judgment protective output. An upper cover plate is arranged on the upper part of the bracket; three probe mounting holes are arranged at the bottom part of the bracket; the distance among the three probes is no less than 55 mm. The utility model improves the stability of relative expansion and can realize zero accident in a whole year, which assures that the operating personnel can accurately monitor the change of the differential expansion parameters, make accurate judgment to avoid error operation and friction between moving impellers and stationary impellers of the steam turbine.
Description
Technical field
The utility model belongs to the steam turbine differential expansion protective gear, particularly a kind of small steam turbine differential protecting equipment that expands.
Background technique
At present; the steam turbine differential expansion protective gear that uses in the thermal power plant tradition adopts a probe, a fore-lying device and a controller to form the single loop protective gear mostly; by the two probes of employing, two fore-lying devices, two controllers forms the double loop protective gear, do not adopt three of three probes, three fore-lying devices and three controller compositions to get two logics judgement protective gear in the 100MW level and with the little unit of subordinate.And adopt single loop or two circuit protective gear very easily to protect malfunction or tripping situation to take place, the safe operation of serious threat steam turbine.In the above Large Steam Turbine Sets of 300MW, bloated difference measurements has and adopts three to get that two logics judge, but being sub-fraction by TSI steam turbine monitor instrument system, its function realizes, and or not independent protective gear.Produce the producer of steam turbine monitor instrument; has only the bloated difference of 8000/042 Twin channel monitor as Jiangyin Zhonghe Electric Power Apparatus Co., Ltd.; but its 8000 series hypervelocity monitoring and protection devices type is to adopt triple channel to measure rotating speed; and power with independent current source; reset and check logic is controlled; guarantee the reliability of each working state; so three get the reliability that two logic voting dishes guarantee critical tripping grinder. this monitoring and protection devices type is fit to the system design of middle-size and small-size rotating machinery device TSI. and this device adopts 4 8000 cabinets; the supply of material separately is used to measure the turbine speed protective gear but not bloated differential protecting equipment.
Summary of the invention
The utility model has overcome the defective of above-mentioned existence; purpose is in order to solve in the bloated differential protecting equipment of small steam turbine because because of probe and fore-lying device operating temperature height; break down or decreased performance; and cause the measurement error increase or measure malfunctioning; cause protecting misoperation and make compressor emergency shutdown; cause heavy economic losses, a kind of small steam turbine differential protecting equipment that expands is provided.
The utility model small steam turbine differential protecting equipment content Description that expands:
The utility model small steam turbine differential protecting equipment that expands; it is characterized in that: form by three probes, three fore-lying devices and three controllers; three probes are installed on the support of steam turbine same measuring point setting side by side; by three separate loops; measure the output that shows, reports to the police respectively, three get two logics judges back protection output.
Top at support is provided with upper cover plate, and the bottom of support is provided with 3 probe mounting holes, and 3 distances of popping one's head between the mounting hole are not less than 55mm.
The utility model small steam turbine differential protecting equipment that expands; improved the stability of relative expansion; guarantee that the operations staff can monitor correctly that the difference parameter that expands changes, judge accurately and avoid misoperation mistakenly stop machine and steam turbine sound impeller takes place grinding mutually, can realize that 1 year zero accident takes place.
Description of drawings
Fig. 1 is the bloated differential protecting equipment structural representation of small steam turbine
Fig. 2 is a probe mounting bracket structural representation
Embodiment
The utility model small steam turbine differential protecting equipment that expands is achieved in that to do below in conjunction with accompanying drawing and specifies.See Fig. 1; be the bloated differential protecting equipment of small steam turbine; three probes are installed side by side in same measuring point; finishing measurement by three fore-lying devices, controllers shows; because three loops are independently; measure respectively and show; Installation and Debugging when the steam turbine cold conditions; three loop measured values are consistent, and after steam turbine started, the difference that occurs expanding was normal; if three loop measured values are consistent; specification exception is the problem of steam turbine itself, if difference is excessive between three loop measured values, can conclude it is the problem of a certain channel loop.
See Fig. 2, among the figure: the 1st, upper cover plate, the 2nd, support, the 3rd, probe mounting hole, the 4th, turbine rotor.Three probes are installed on the support 2 that is provided with in the same measuring point of steam turbine side by side, be provided with upper cover plate 1 on the top of support 2, the bottom of support 2 is provided with 3 probe mounting holes 3, in order to guarantee measuring accuracy and sensitivity, 3 distances of popping one's head between the mounting hole 3 are not less than 55mm, could guarantee that three's output signal is consistent and stable, otherwise system is overproof and unstable.Big many causing in watt seat of to pack into of perforate of installing than support top owing to the support lower dimension during installation.In order to address this problem, need are installed in the hole after support is rotated counterclockwise 90 degree, the support dextrorotation are turn 90 degrees again, and only in this way could smoothly support be installed on the base.
Under the situation of the normal operation of steam turbine, technology when making, the performance difference of components and parts, and the installation dimension of three probes on mounting bracket, the reasons such as difference of position owing to probe, fore-lying device, controller, causing between three loop measured values is impossible on all four, but it must be within certain EE Error Excepted scope.Difference changes if expand; three loops are detected simultaneously; the super I limit of which loop measured value; acoustooptic alarm is just sent in which loop; remind the operations staff to note,, send protective signal and send into the steam turbine protection system when having in three loops when reaching II limit protection value more than two; protective system is sent the protection halt command, makes steam turbine out of service.Any one link goes wrong in three loops; all just influence a certain loop; and can not cause the generation of protection malfunction or tripping phenomenon, and two possibilities that break down simultaneously are low-down in three loops, as seen the Security of this device, reliability have improved greatly.
This installs maximum characteristics is that three probes are installed on the same measuring point of steam turbine, and three loops are separate, measures the output that shows, reports to the police respectively, and three get two logics judges protection output.
Claims (2)
1. the small steam turbine differential protecting equipment that expands; it is characterized in that: form by three probes, three fore-lying devices and three controllers; three probes are installed on the support (2) that is provided with in the same measuring point of steam turbine side by side; by three separate loops; measure the output that shows, reports to the police respectively, three get two logics judges protection output.
2. the small steam turbine according to claim 1 differential protecting equipment that expands; it is characterized in that: be provided with upper cover plate (1) on the top of support (2); the bottom of support (2) is provided with 3 probe mounting holes (3), and the distance between 3 probe mounting holes (3) is not less than 55mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200720014544.9U CN201090251Y (en) | 2007-09-14 | 2007-09-14 | Minitype turbine bulge difference protective equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200720014544.9U CN201090251Y (en) | 2007-09-14 | 2007-09-14 | Minitype turbine bulge difference protective equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090251Y true CN201090251Y (en) | 2008-07-23 |
Family
ID=39862011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200720014544.9U Expired - Lifetime CN201090251Y (en) | 2007-09-14 | 2007-09-14 | Minitype turbine bulge difference protective equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090251Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226415A (en) * | 2011-05-06 | 2011-10-26 | 上海发电设备成套设计研究院 | Device and method for monitoring and controlling security risk of steam turbine rotor in on-line manner |
| CN103615966A (en) * | 2013-11-19 | 2014-03-05 | 国网河南省电力公司南阳供电公司 | Steam turbine generator unit differential expansion fault quick judgment method |
| CN109979145A (en) * | 2019-03-28 | 2019-07-05 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of tripping of converter station valve hall fire judgment method, apparatus and system |
-
2007
- 2007-09-14 CN CN200720014544.9U patent/CN201090251Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226415A (en) * | 2011-05-06 | 2011-10-26 | 上海发电设备成套设计研究院 | Device and method for monitoring and controlling security risk of steam turbine rotor in on-line manner |
| CN102226415B (en) * | 2011-05-06 | 2013-10-09 | 上海发电设备成套设计研究院 | Device and method for monitoring and controlling security risk of steam turbine rotor in on-line manner |
| CN103615966A (en) * | 2013-11-19 | 2014-03-05 | 国网河南省电力公司南阳供电公司 | Steam turbine generator unit differential expansion fault quick judgment method |
| CN103615966B (en) * | 2013-11-19 | 2016-08-17 | 国网河南南召县供电公司 | A kind of steam turbine generator unit differential expansion fault quick judgment method |
| CN109979145A (en) * | 2019-03-28 | 2019-07-05 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of tripping of converter station valve hall fire judgment method, apparatus and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080723 |
|
| CX01 | Expiry of patent term |