CN103615966A - Steam turbine generator unit differential expansion fault quick judgment method - Google Patents
Steam turbine generator unit differential expansion fault quick judgment method Download PDFInfo
- Publication number
- CN103615966A CN103615966A CN201310580693.1A CN201310580693A CN103615966A CN 103615966 A CN103615966 A CN 103615966A CN 201310580693 A CN201310580693 A CN 201310580693A CN 103615966 A CN103615966 A CN 103615966A
- Authority
- CN
- China
- Prior art keywords
- loop
- fault
- differential expansion
- steam turbine
- turbine generator
- 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
Landscapes
- Control Of Eletrric Generators (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a steam turbine generator unit differential expansion fault quick judgment method. According to the method, a loop alarm and a condition alarm are jointly used for being connected with a digital signal processor (DSP) module arranged in a DCS so that a digital signal detected by a differential expansion probe can be transmitted to the DSP module through a lead; when the digital signal passes through the DSP module, a current gap is calculated by means of comparison with a null voltage according to a voltage-gap linear formula in differential expansion probe parameters; if an alarm signal is generated, when the gap is within a range allowed by errors, it is indicated that a fault happens in a loop, and the signal switches into the loop alarm automatically; otherwise, the signal switches into the condition alarm. By means of the steam turbine generator unit differential expansion fault quick judgment method, whether the fault is a loop fault or a fault inside a steam turbine generator can be distinguished quite simply and conveniently, great convenience is brought to a maintainer, the judgment time of the maintainer can be shortened, and the phenomenon of generator disassembly due to inaccurate judgment is reduced; the steam turbine generator unit differential expansion fault quick judgment method is easy and convenient to implement, simple in operation, and worth popularization and application.
Description
Technical field
The invention belongs to integrated application system and electrical network support technology field, be specifically related to the swollen poor fault method for rapidly judging of a kind of Turbo-generator Set.
Background technology
In Turbo-generator Set operational process, it is extremely important allowing rotor and cylinder keep roughly the same axial heat expansion speed, for preventing between rotor and bearing because thermal expansion difference reason causes sound partial frictional, swollen poor monitoring probe need to be installed, with the gap between monitoring rotor and cylinder, but when the swollen difference alarming of current control system, often only export a malfunctioning node signal, to being operating mode fault on earth or being only that loop fault reflection is not directly perceived.Because probe belongs to insert structure, the rear examination of installation is inconvenient, gives to overhaul and also causes very large difficulty, is unfavorable for investigating fast problem, resuming production, and tends to cause unnecessary economic loss; In CN 201090251 Y, a kind of Minitype turbine bulge difference protective equipment is disclosed; it is characterized in that: by two probes, two fore-lying devices and two controllers, formed; two probes are installed on the support arranging in the same measuring point of steam turbine side by side; by two separate loops; measure respectively the output that shows, reports to the police, three get two logic judgement protection outputs.Top at support is provided with upper cover plate, and the bottom of support is provided with 3 probe mounting holes, and the distance between 3 probe mounting holes is not less than SSmm; The utility model Minitype turbine bulge difference protective equipment, has improved the stability of relative expansion, guarantees that operations staff can correctly monitor that swollen poor parameter changes, and judgement is accurately avoided maloperation and steam turbine sound impeller occurs grinding mutually, can realize 1 year zero accident and occur.It arranges a plurality of probes and guarantees stability, but it can not distinguish circuit question or probe problem, therefore needs a kind of defence's method of examining for this device.
Summary of the invention
The object of the present invention is to provide a kind of easy and simple to handle, examine and debate the swollen poor fault method for rapidly judging of simple turbine generator group.
Realizing the technical scheme that object of the present invention adopts is: a kind of Turbo-generator Set is swollen poor fault method for rapidly judging, comprises the following steps:
A. at the control space of a whole page, set up a swollen difference alarming pilot lamp, thereby realize, former alerting signal therewith forms condition alarm and report to the police in loop;
B. warning digital signal processor (DSP) module common built-in with DCS with condition alarm in loop is connected;
C. will collect the current input voltage of swollen poor probe, the linear formula to voltage-gap in swollen poor probe parameter when by with total null voltage, calculates and works as anterior diastema;
When d. alerting signal occurs, if when anterior diastema is in error range, prove that fault occurs over just loop, signal automatically proceeds to loop and reports to the police, otherwise proceeds to condition alarm.
The present invention adopts warning digital signal processor (DSP) module common built-in with DCS with condition alarm in loop to be connected, make the digital signal that detects by swollen poor probe by wire transmission to DSP module, during through DSP module, linear formula by voltage-gap in the contrast with total null voltage and swollen poor probe parameter, calculates and works as anterior diastema with this; If alerting signal occurs, gap, when the scope of error permission, proves that fault occurs in loop, and signal automatically proceeds to loop and reports to the police; Otherwise proceed to condition alarm, can be very easy by the present invention distinguish loop fault or the fault of turbodynamo inside, be very easy to maintainer, can shorten the judgement time, reduced because the phenomenon of the inaccurate dismounting generator of judgement; The inventive method is easy, simple to operate, is worthy to be popularized and applies.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is Facad structure schematic diagram of the present invention.
Embodiment
As shown in Figure 1: a kind of Turbo-generator Set is swollen poor fault method for rapidly judging, comprises the following steps:
A. at the control space of a whole page, set up a swollen difference alarming pilot lamp, thereby realize, former alerting signal therewith forms condition alarm 1 and loop reports to the police 2;
B. warning 1 digital signal processor (DSP) module 3 common built-in with DCS with condition alarm 2 in loop is connected;
C. will collect swollen poor probe 4 current input voltages, the linear formula to voltage-gap in swollen poor probe 4 parameters when by with total null voltage, calculates and works as anterior diastema;
When d. alerting signal occurs, if when anterior diastema is in error range, prove that fault occurs over just loop, signal automatically proceeds to loop and reports to the police 2, otherwise proceeds to condition alarm 1.
The present invention is by swollen poor probe feedack, by transmitting wire, signal is passed to DSP module, linear formula through it to voltage-gap in the contrast of total null voltage and swollen poor probe parameter, with this, calculate and work as anterior diastema, thereby judgement belongs to that fault, then the information of gained is fed back on pilot lamp.For the diagnosis of maintainer to fault, favourable guarantee is provided, once avoid originally breaking down and will shut down the phenomenon of maintenance, because it opens trouble, trouble is installed and makes its shutdown inspection once need time a couple of days, if the problem of operating mode still can, if got the wrong sow by the ear, cause huge economic loss, by the present invention, well overcome this phenomenon, made it can make correct judgement; Reduced because the phenomenon of the inaccurate dismounting generator of judgement has guaranteed the safety and stablization of moving greatly; The inventive method is easy, simple to operate, is worthy to be popularized and applies.
Claims (1)
1. the swollen poor fault method for rapidly judging of Turbo-generator Set, is characterized in that: comprise the following steps:
A. at the control space of a whole page, set up a swollen difference alarming pilot lamp, thereby realize, former alerting signal therewith forms condition alarm and report to the police in loop;
B. warning digital signal processor (DSP) module common built-in with DCS with condition alarm in loop is connected;
C. will collect the current input voltage of swollen poor probe, the linear formula to voltage-gap in swollen poor probe parameter when by with total null voltage, calculates and works as anterior diastema;
When d. alerting signal occurs, if when anterior diastema is in error range, prove that fault occurs over just loop, signal automatically proceeds to loop and reports to the police, otherwise proceeds to condition alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310580693.1A CN103615966B (en) | 2013-11-19 | 2013-11-19 | A kind of steam turbine generator unit differential expansion fault quick judgment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310580693.1A CN103615966B (en) | 2013-11-19 | 2013-11-19 | A kind of steam turbine generator unit differential expansion fault quick judgment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103615966A true CN103615966A (en) | 2014-03-05 |
| CN103615966B CN103615966B (en) | 2016-08-17 |
Family
ID=50166673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310580693.1A Expired - Fee Related CN103615966B (en) | 2013-11-19 | 2013-11-19 | A kind of steam turbine generator unit differential expansion fault quick judgment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103615966B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764787A (en) * | 2019-03-13 | 2019-05-17 | 莱芜钢铁集团有限公司 | A kind of steam turbine generator unit differential expansion fault point detecting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663919Y (en) * | 2003-10-23 | 2004-12-15 | 徐莉 | Monitoring and fault diagnosing system for speed regulation arrangement of turbo generating set |
| CN201090251Y (en) * | 2007-09-14 | 2008-07-23 | 鞍山钢铁集团公司 | Minitype turbine bulge difference protective equipment |
| CN201142011Y (en) * | 2007-10-13 | 2008-10-29 | 德阳瑞能电力科技有限公司 | Safety monitoring device of rotating machinery |
| CN201589683U (en) * | 2009-12-14 | 2010-09-22 | 贵州电力试验研究院 | Differential expansion monitoring device of turbine lower-pressure cylinder |
| CN102331293A (en) * | 2011-06-20 | 2012-01-25 | 江阴盈誉科技有限公司 | Axial vibration transmitter system |
-
2013
- 2013-11-19 CN CN201310580693.1A patent/CN103615966B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663919Y (en) * | 2003-10-23 | 2004-12-15 | 徐莉 | Monitoring and fault diagnosing system for speed regulation arrangement of turbo generating set |
| CN201090251Y (en) * | 2007-09-14 | 2008-07-23 | 鞍山钢铁集团公司 | Minitype turbine bulge difference protective equipment |
| CN201142011Y (en) * | 2007-10-13 | 2008-10-29 | 德阳瑞能电力科技有限公司 | Safety monitoring device of rotating machinery |
| CN201589683U (en) * | 2009-12-14 | 2010-09-22 | 贵州电力试验研究院 | Differential expansion monitoring device of turbine lower-pressure cylinder |
| CN102331293A (en) * | 2011-06-20 | 2012-01-25 | 江阴盈誉科技有限公司 | Axial vibration transmitter system |
Non-Patent Citations (2)
| Title |
|---|
| 彭博伟: "汽轮机高压缸胀差偏大的故障分析", 《电力安全技术》 * |
| 朱小良，关鸿雁: "火力发电厂汽轮机胀差检测系统中的可靠性措施", 《机械科学与技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764787A (en) * | 2019-03-13 | 2019-05-17 | 莱芜钢铁集团有限公司 | A kind of steam turbine generator unit differential expansion fault point detecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103615966B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201229389Y (en) | Cable sheath insulation on-line monitoring device | |
| CN201835985U (en) | Embedded monitoring instrument and wind generating set thereof | |
| Jamil et al. | Technical communication of Condition Monitoring System of hydroelectric generating unit of HPP | |
| CN204228887U (en) | A kind of power equipment and the comprehensive on-line monitoring system of transmission line malfunction | |
| CN102682862B (en) | Online diagnosis method for effectiveness states of thermocouples of reactor core of pressurized water reactor nuclear power plant | |
| CN106771927B (en) | GIS voltage withstand fault positioning method, fault cause judging method using same and positioning device | |
| CN202171595U (en) | Overspeed protection module and overspeed protection system using same | |
| CN203658765U (en) | Control system interlocking protection device based on temperature measurement | |
| CN101750148A (en) | On-line monitoring and positioning method for temperature of junction plates of pole coil of rotor of electric generator | |
| CN102195342A (en) | Photovoltaic power station assembly state real-time monitoring system | |
| CN103615966A (en) | Steam turbine generator unit differential expansion fault quick judgment method | |
| CN101995839B (en) | Safety-level equipment cabinet monitoring device | |
| CN204286646U (en) | Main transformer of transformer substation thermometric loop fault detecting device | |
| CN103811081B (en) | A kind of method and apparatus that prevents the malfunction of nuclear plant safety protection system | |
| CN103674297B (en) | A kind of temperature measurement system for cable joint of annular cabinet | |
| CN103163402B (en) | Relay protection device state monitoring apparatus based on secondary circuit and monitoring method | |
| CN103274304A (en) | Method for dynamically adjusting monitoring and safety pre-warning threshold values of crane structure | |
| CN102662820A (en) | Method and device for data protection | |
| CN105429102A (en) | Protection warning method and system for frequency converter equipped with multiple motors | |
| CN205212412U (en) | Protection alarm system of many motors in converter area | |
| CN201242473Y (en) | Hydraulic set temperature measurement instrument | |
| CN102420417B (en) | Wound type motor protector and protection method thereof | |
| CN201090251Y (en) | Minitype turbine bulge difference protective equipment | |
| CN103306967A (en) | Measuring system for 300 MW reactor coolant pump | |
| CN202929474U (en) | Power station auxiliary machine fault diagnosis system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160620 Address after: Nanyang City, Henan province 473000 Nanzhao County Chengguan Danxia Road No. 27 Applicant after: STATE GRID HENAN NANZHAO POWER SUPPLYING COMPANY Address before: 473000 Henan City, Nanyang province people's North Road, No. 268 Applicant before: Nanyang Power Supply Company, State Grid Henan Electric Power Company |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20161119 |