CN107525967A - A kind of measurement apparatus and method of contactless fluted disc frequency - Google Patents
A kind of measurement apparatus and method of contactless fluted disc frequency Download PDFInfo
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- CN107525967A CN107525967A CN201710842608.2A CN201710842608A CN107525967A CN 107525967 A CN107525967 A CN 107525967A CN 201710842608 A CN201710842608 A CN 201710842608A CN 107525967 A CN107525967 A CN 107525967A
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- 238000005259 measurement Methods 0.000 title claims abstract description 59
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- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 6
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
Abstract
A kind of measurement apparatus and method of contactless fluted disc frequency, cingulum, tooth head are grouped together into fluted disc, and fluted disc is arranged on the big axle of hydrogenerator.The tooth head is sequentially uniformly mounted on cingulum with quantity, and installation parallel with holes probe face, the distance of reaction L certain with holes probe holding.Tooth head, cingulum and holes probe component frequency signal generating unit, when the big axle rotation of hydrogenerator, fluted disc rotates with big axle and produces velocity pulse, sensed by holes probe and produce unit frequency signal, reflect the pulse signal of generating unit speed, interference signal source and pulse signal are handled by frequency signal change-over panel, then by measuring pulse width by frequency measurement module, and the frequency as caused by square wave calculates generating unit speed size, on deliver to PLC processing rotating speed, relevant information is shown on the touchscreen.The present invention has self-diagnostic function, and when holes probe breaks down, system can veto faulty channel automatically, the use of this mechanism can effectively suppress bursty interference, and fault-signal is rejected, the fault-tolerant ability of measurement apparatus is greatly improved, so as to the reliability of progressive system.
Description
Technical field
The present invention a kind of measurement apparatus and method of contactless fluted disc frequency, belong to hydroelectric power plant's electric automatic control technology
Field.
Background technology
Turbine-generator units rotating speed is the important parameter that turbine-generator units control to adjust, and unit can be made to complete start, stop
The functions such as machine, increasing and decreasing load, therefore the requirement of reliability high-precision, residual voltage frequency are proposed to the measurement apparatus of machine class frequency
It has the advantages of cost is low, installation is simple, but there is also certain security risk：Residual pressure signal serious distortion during the slow-speed of revolution, nothing
Method detects its real generating unit speed by residual voltage Frequency Patterns, causes unit residual voltage frequency during startup-shutdown to disappear,
It is likely to result in unit and is in state out of control；Residual voltage frequency is easily by the interference signal in the external world（Electromagnetic interference, broken string etc.）,
This interference signal can not eradicate this hidden danger from hardware device using modes such as shielding lines, can not also be used from software mode
The modes such as filtering effectively eliminate this interference signal, thus are difficult to ensure that the accuracy of unit frequency measurement, and unit is then to detect
Data be adjusted for actual frequency, it will cause the fluctuation of the frequent regulation even network load of unit active power；Will
Hydraulic system oil pump can be caused frequently unloading will to be added to influence electrical machinery life；Master will occur with twitch phenomenon, or even occur
Unit, which is overrun, causes electric one-level to be overrun, electric two level is overrun acts with water dispenser back-up protection, and then rapid door can be caused to close soon
Action falls the situation of door, and unit has serious potential safety hazard.
Because fluted disc speed measuring is a kind of direct measurement mode of turbine-generator units rotating speed, its reliability and confidence level are obvious
Tested the speed better than residual voltage.In fluted disc speed measuring, the machining accuracy of fluted disc it is difficult to ensure that the required precision of turbine-generator units tachometric survey,
And measurement accuracy, and the real-time that will influence frequency measurement are improved using the method for average filter.
The content of the invention
The invention aims to overcome the shortcomings of prior art and shortcoming, there is provided a kind of contactless fluted disc frequency
The measurement apparatus and method of rate, simple in construction, measurement accurately, so as to can reach the purpose for improving system reliability, effectively avoid
Frequency measurement inaccuracy occur unit overrun caused by economic loss and device damage caused by disorderly closedown.
The technical scheme that the present invention takes is：
A kind of measuring method of contactless fluted disc frequency, eliminated by installing two sensors caused by fluted disc machining accuracy
Measurement error.
A kind of measuring method of contactless fluted disc frequency, the measuring machine by the way of two-way fluted disc speed measuring adds residual voltage to test the speed
Group rotating speed, including be unit residual voltage frequency signal all the way, another two-way is fluted disc frequency signal；Fluted disc frequency and residual voltage frequency are each other
It is standby, it is preferential to use fluted disc frequency in unit start or stopping process, preferentially use 1# fluted discs frequency in fluted disc frequency signal
Rate；2# fluted disc frequency signals are used when 1# fluted disc frequency faults.
A kind of measuring method of contactless fluted disc frequency, in normal operation, residual voltage frequency passes through to be carried out with fluted disc frequency
Compare checking it is errorless after, for speed regulator control calculate use；When residual voltage frequency fault or comparative result exceed given threshold scope
When, it is preferential with fluted disc frequency signal, is controlled for speed regulator and calculate use；For speed regulator after grid-connected, net is frequent to make speed regulator
Frequency measurement standby；
A kind of measurement apparatus of contactless fluted disc frequency, the device include：
Cingulum, tooth head, 1# holes probes, 2# holes probes, frequency signal isolation change, frequency signal change-over panel, frequency measurement module,
PLC, touch-screen.The cingulum, tooth head are grouped together into fluted disc, and fluted disc is arranged on the big axle of hydrogenerator.
The tooth head is sequentially uniformly mounted on cingulum with quantity, and it is parallel with holes probe face installation, with testing the speed
Probe keeps certain distance of reaction L.Tooth head, cingulum and holes probe component frequency signal generating unit, work as hydrogenerator
During big axle rotation, fluted disc rotates with the big axle of hydrogenerator and produces velocity pulse, senses generation machine class frequency by holes probe
Signal, reflect the pulse signal of generating unit speed, interference signal source and pulse signal, Ran Houjing are handled by frequency signal change-over panel
Cross and pulse width is measured by frequency measurement module, and the frequency as caused by square wave calculates generating unit speed size, above delivers to PLC
Rotating speed is handled, relevant information is shown on the touchscreen.
The holes probe is standby each other using dual probe two pass bands, with the tooth head of fluted disc keep certain sensing away from
From L, holes probe and tooth head holding concentricity are rack-mount, and the mounting distance between two holes probes is maintained at tooth head
With the integral multiple distance D of tooth head spacing.
The cingulum, tooth head use Fine Steel Casting iron.
The measurement apparatus of fluted disc frequency, it is made up of fluted disc speed measuring probe and corresponding revolution speed signal processor loop.
The holes probe uses the capacitive approach switch being made up of high-frequency generator and amplifier.
The frequency measurement module uses high speed counting module, is surveyed using the reference clock frequency of PLC high speed digital Is/O channel
Frequently.
The touch-screen uses 19 cun of high clear colorful lcd touch industrial computers of imported with original packaging, and hard-disc storage amount is not less than 1T,
And at least there is USB, Ethernet and serial communication interface, displaying information on screen is Chinese, has independently-powered and standby electricity
The electric supply system in pond.
Apparatus of the present invention include redundant power module, and redundant power module is popped one's head in for fluted disc speed measuring and residual voltage tests the speed, and loop carries
For independent redundant power.
Apparatus of the present invention include residual voltage frequency loop all the way, are mutually redundant with fluted disc frequency standby, and residual voltage frequency signal takes
From voltage transformer side, frequency signal change-over panel processing pulse signal, use and fluted disc are entered after frequency signal isolation becomes
The same mechanism processing of frequency signal and calculating rotating speed.
The present invention a kind of measurement apparatus and method of contactless fluted disc frequency, technique effect are as follows：
1：Measurement error caused by fluted disc machining accuracy etc. is eliminated by installing the method for two sensors, to meet hydroelectric machine
Group control is to the requirement in terms of rate accuracy and real-time.Fluted disc speed measuring signal is not limited by generator residual pressure, also not by non-
The interference of cycle clutter, there is higher reliability than residual voltage frequency signal, fluted disc speed measuring device also has highly reliable zero-turn speed
（Wriggle）Detection function.But the double holes probe strategies of fluted disc frequency are not still fully solved measurement accuracy problem.
2：A kind of measurement apparatus of contactless fluted disc frequency provided by the invention has optional dual probe speed measuring function,
There is residual voltage frequency functionality simultaneously, the big axle of unit is swung and fluted disc machining accuracy error is to fluted disc speed measuring precision effectively to offset
Influence, efficiently avoid the inaccuracy that single channel tests the speed, improve the reliability of speed measuring device, reduce equipment cost.
3：Speed measuring device provided by the invention has independent power of alterating and direct current while powers and form redundant power system,
Two paths of signals while defeated people, improve power supply reliability.
4：Measurement apparatus provided by the invention has self-diagnostic function, and when holes probe breaks down, system can be automatic
Faulty channel is vetoed, the use of this mechanism can effectively suppress bursty interference, and reject fault-signal, greatly improve survey
The fault-tolerant ability of device is measured, so as to the reliability of progressive system.
5：Measurement apparatus provided by the invention has highly reliable zero-turn speed（Wriggle）Detection function.Unit is in stopped status
Under remain to normally detect when if any wriggling situation occurring, and provide signal.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is fluted disc speed measuring of the present invention probe scheme of installation.
Fig. 2 is fluted disc speed measuring of the present invention probe distribution schematic diagram.
Fig. 3 is the measurement apparatus schematic diagram of fluted disc frequency of the present invention.
In figure：The big axle of 1- turbine-generator units；2- cingulums；3- tooth heads；4-1# holes probes；5-2# holes probes；6-1#
Fluted disc frequency generation unit；7-2# fluted disc frequency generation units；8- residual voltage frequency signals；The isolation of 9- frequency signals becomes；10- frequencies
Rate signal transducer；11- frequency measurement modules；12-PLC controllers；13- touch-screens；14- redundant power modules.
Embodiment
A kind of measuring method of contactless fluted disc frequency, the measuring machine by the way of two-way fluted disc speed measuring adds residual voltage to test the speed
Group rotating speed, including be unit residual voltage frequency signal all the way, another two-way is fluted disc frequency signal.This fluted disc frequency and residual voltage frequency are mutual
It is preferential to use fluted disc frequency in unit start or stopping process to be standby, preferentially use 1# fluted discs frequency in fluted disc frequency signal
Rate.In normal operation, residual voltage frequency through compared with fluted disc frequency verify it is errorless after, for speed regulator control calculate use.
When residual voltage frequency fault or comparative result go beyond the scope, it is preferential with fluted disc frequency signal, is controlled for speed regulator and calculate use.
Speed regulator nets the frequent frequency measurement standby for making speed regulator after grid-connected.
A kind of measuring method of contactless fluted disc frequency, it is proposed that double holes probe strategies of fluted disc frequency, it is expected to lead to
The method for crossing two sensors of installation eliminates measurement error caused by fluted disc machining accuracy etc., to meet Hydropower Unit control pair
Requirement in terms of rate accuracy and real-time.Fluted disc speed measuring signal is not limited by generator residual pressure, also not by aperiodic clutter
Interference, there is higher reliability than residual voltage frequency signal, fluted disc speed measuring device also has highly reliable zero-turn speed（Wriggle）Inspection
Brake.But the double holes probe strategies of fluted disc frequency are not still fully solved measurement accuracy problem, the present invention uses two-way
The mode measuring unit rotating speed that the residual voltage that fluted disc speed measuring adds tests the speed, including be unit residual voltage frequency signal all the way, another two-way is fluted disc
Frequency signal.This fluted disc frequency and residual voltage frequency are standby each other, in unit start or stopping process, preferentially using fluted disc frequency
Rate, preferentially 1# fluted disc frequencies are used in fluted disc frequency signal.In normal operation, residual voltage frequency is passed through compared with fluted disc frequency
Verify it is errorless after, for speed regulator control calculate use.When residual voltage frequency fault or comparative result go beyond the scope, with fluted disc frequency
Signal is preferential, is controlled for speed regulator and calculates use.Speed regulator nets the frequent frequency measurement standby for making speed regulator after grid-connected.
A kind of measurement apparatus of contactless fluted disc frequency, including it is cingulum, tooth head, 1# holes probes, 2# holes probes, superfluous
Remaining power module, frequency signal isolation change, frequency signal change-over panel, frequency measurement module, PLC and touch-screen.
The redundant power module can pop one's head in for fluted disc speed measuring and residual voltage tests the speed, and loop provides independent redundant power, protects
Card device does not power off.Cingulum and the tooth head is grouped together into fluted disc, and fluted disc is arranged on the hydrogenerator of water wheel chamber section
On big axle, it is easy to the installation and maintenance of holes probe.The tooth head is sequentially uniformly mounted on cingulum with quantity,
And installation parallel with holes probe face, certain distance of reaction is L with holes probe holding.The holes probe is visited using double
Head two pass bands are standby each other, and 1# holes probes and 2# holes probes is respectively adopted, and certain sense is kept with the tooth head of fluted disc
Should distance L, with tooth head keep concentricity it is rack-mount, the mounting distance between two holes probes is maintained at tooth head and tooth
The integral multiple distance D of head spacing.The measurement apparatus of fluted disc frequency is handled by fluted disc speed measuring probe and corresponding tach signal
Device loop is formed, tooth head, cingulum and holes probe component frequency signal generating unit.When the big axle rotation of turbine-generator units,
Fluted disc is rotated with the big axle of hydrogenerator and produces velocity pulse, and unit frequency is produced by proximity or the sensing of photo-electric holes probe
Rate signal, reflect the pulse signal of generating unit speed, handle interference signal source and pulse signal by frequency signal change-over panel, then
By measuring pulse width by frequency measurement module, and the frequency as caused by square wave calculates generating unit speed size, above delivers to PLC controls
Device handles rotating speed, and relevant information is shown on the touchscreen.
Measurement apparatus provided by the invention completes generating unit speed detection simultaneously and unit is wriggled and detected.
As a kind of preferable technical scheme of the present invention, cingulum and the tooth head preferentially uses Fine Steel Casting iron, processing essence
Degree is high, and fluted disc circularity is accurate, is installed uniformly between tooth and tooth, noise immunity is strong.
As a kind of preferable technical scheme of the present invention, the holes probe is preferentially using by high-frequency generator and amplifier
The capacitive approach switch of composition, it is preferential to use proximity switch of the output based version for PNP DC three-wire system and steady with performance
Fixed, frequency response is fast, strong antijamming capability, has the etch-proof feature of water, shock.
As a kind of preferable technical scheme of the present invention, the PLC uses modularized design, all I/O modules
It can plug, there is high reliability, extremely strong antijamming capability, adapt to various electromagnetic interference environments, preferentially adopt
It is not less than 2.6GHz with controller dominant frequency, internal memory is not less than 1G, is equipped with the internal memory of enough capacity, should be carried using during RAM
Backup battery.
As a kind of preferable technical scheme of the present invention, the frequency measurement module preferentially uses high speed counting module, utilizes PLC
The reference clock frequency of high speed digital I/O channel carrys out frequency measurement, avoids using external crystal oscillation circuit and outside frequency measurement board, frequency measurement essence
Index request of the degree not less than 0.15 ‰.
As a kind of preferable technical scheme of the present invention, the touch-screen preferentially uses 19 cun of high clear colorful liquid of imported with original packaging
Crystalline substance touches industrial computer, and hard-disc storage amount is not less than 1T, and at least has USB, Ethernet and serial communication interface, screen display
Information is Chinese, has the independently-powered and electric supply system of backup battery.
As a kind of preferable technical scheme of the present invention, the redundant power module preferentially uses Switzerland imported with original packaging ABB
Redundant power, should have the characteristics that reliability height, stable performance, fault rate are low, easy to maintenance.
Embodiment：
The present invention provides a kind of measurement apparatus of contactless fluted disc frequency, including the big axle 1 of turbine-generator units, 1# holes probes
4th, 2# holes probes 5, fluted disc and 1# holes probes composition 1# fluted discs frequency generation unit 6, fluted disc and 2# holes probes composition 2#
Fluted disc frequency generation unit 7, residual voltage frequency signal 8, frequency signal isolation become 9, frequency signal change-over panel 10, frequency measurement module 11,
PLC 12, touch-screen 13, redundant power module 14.A fluted disc is wherein formed by cingulum 2 and tooth first 3.
The fluted disc is arranged on the big axle 1 of hydrogenerator of water wheel chamber section, and tooth first 3 is equal with quantity in a certain order
It is arranged on evenly on cingulum 2, and certain distance of reaction L is kept with tooth first 3 respectively with 1# holes probes 4 and 2# holes probes 5
The parallel installation of face afterwards, holes probe first with tooth 3 keep concentricity rack-mount, the locating distance between two holes probes
From the integral multiple distance D for being maintained at tooth head and tooth head spacing.By tooth is first 3, cingulum 2 is sent out with holes probe component frequency signal
Raw unit, the redundant power module 14 provide independent redundant power for holes probe, ensure that device does not power off.When water wheels are sent out
When the big axle 1 of group of motors rotates, fluted disc rotates with big axle and produces velocity pulse, passes through proximity or the sensing production of photo-electric holes probe
Life class frequency signal, reflect the pulse signal of generating unit speed, pulse signal, Ran Houjing are handled by frequency signal change-over panel 10
Cross and pulse width is measured by frequency measurement module 11, and the frequency as caused by square wave calculates generating unit speed size, above delivers to PLC controls
Device 12, touch-screen 14 will be delivered in relevant information.
The invention provides residual voltage frequency loop all the way, is mutually redundant with fluted disc frequency standby.Residual voltage frequency signal 8 is derived from
Voltage transformer side, the processing pulse signal of frequency signal change-over panel 10, use and fluted disc are entered after frequency signal isolation becomes 9
The same mechanism processing of frequency signal and calculating rotating speed.Measurement apparatus provided by the invention completes generating unit speed detection and machine simultaneously
Group, which is wriggled, to be detected.
The present invention provides three drive test frequency passages, is all the way unit residual voltage frequency signal, another two-way is fluted disc frequency signal.This
Fluted disc frequency is standby each other with residual voltage frequency, and in unit normal operation, residual voltage frequency passes through to be verified compared with fluted disc frequency
After errorless, residual voltage frequency is controlled to calculate for speed regulator and used.When residual voltage frequency fault or comparative result exceed given threshold scope
When, it is preferential with fluted disc frequency signal, is controlled for speed regulator and calculate use.For speed regulator after grid-connected, net is frequent to make speed regulator
Frequency measurement standby.Unit is during startup-shutdown, and machine class frequency preferentially uses 1# fluted disc frequency signals, when 1# fluted disc frequency faults
When use 2# fluted disc frequency signals.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (10)
- A kind of 1. measuring method of contactless fluted disc frequency, it is characterised in that：Fluted disc is eliminated by installing two sensors Measurement error caused by machining accuracy.
- A kind of 2. measuring method of contactless fluted disc frequency, it is characterised in that：Add what residual voltage tested the speed using two-way fluted disc speed measuring Mode measuring unit rotating speed, including be unit residual voltage frequency signal all the way, another two-way is fluted disc frequency signal；Fluted disc frequency with it is residual Voltage-frequency rate is standby each other, in unit start or stopping process, preferentially uses fluted disc frequency, is preferentially used in fluted disc frequency signal 1# fluted disc frequencies；2# fluted disc frequency signals are used when 1# fluted disc frequency faults.
- A kind of 3. measuring method of contactless fluted disc frequency according to claim 2, it is characterised in that：In normal operation When, residual voltage frequency through compared with fluted disc frequency verify it is errorless after, for speed regulator control calculate use；When residual voltage frequency fault Or comparative result is when exceeding given threshold scope, is preferential with fluted disc frequency signal, controls to calculate for speed regulator and use；Speed regulator After grid-connected, the frequent frequency measurement standby for making speed regulator is netted.
- 4. a kind of measurement apparatus of contactless fluted disc frequency, it is characterised in that the device includes：Cingulum（2）, tooth head（3）, survey Speed probe, frequency signal isolation become（9）, frequency signal change-over panel（10）, frequency measurement module（11）, PLC（12）, touch-screen （13）；The cingulum（2）, tooth head（3）Fluted disc is grouped together into, fluted disc is arranged on the big axle of hydrogenerator（1）On；It is described Tooth head（3）Sequentially cingulum is uniformly mounted to quantity（2）On, and installation parallel with holes probe face and survey Speed probe keeps certain distance of reaction L；Tooth head（3）, cingulum（2）With holes probe component frequency signal generating unit, when the big axle of hydrogenerator（1）During rotation, Fluted disc rotates with the big axle 1 of hydrogenerator and produces velocity pulse, is sensed by holes probe and produces unit frequency signal, reflects machine The pulse signal of group rotating speed, by frequency signal change-over panel（10）Interference signal source and pulse signal are handled, then by by surveying Frequency module（11）Pulse width is measured, and the frequency as caused by square wave calculates generating unit speed size, above delivers to PLC （12）Rotating speed is handled, relevant information is included in touch-screen（13）On.
- A kind of 5. measurement apparatus of contactless fluted disc frequency according to claim 4, it is characterised in that：The holes probe It is standby each other using dual probe two pass bands, the tooth head with fluted disc（3）Keep certain distance of reaction L, holes probe and tooth Head（3）Holding concentricity is rack-mount, and the mounting distance between two holes probes is maintained at tooth head（3）With tooth head spacing Integral multiple distance D.
- A kind of 6. measurement apparatus of contactless fluted disc frequency according to claim 4, it is characterised in that：The cingulum, tooth Head uses Fine Steel Casting iron.
- A kind of 7. measurement apparatus of contactless fluted disc frequency according to claim 4, it is characterised in that：The frequency measurement module （11）Using high speed counting module, using the reference clock frequency of PLC high speed digital Is/O channel come frequency measurement.
- A kind of 8. measurement apparatus of contactless fluted disc frequency according to claim 4, it is characterised in that：The device includes superfluous Remaining power module（14）, redundant power module（14）Independent redundant electric is provided for fluted disc speed measuring probe and residual voltage loop of testing the speed Source.
- A kind of 9. measurement apparatus of contactless fluted disc frequency according to claim 4, it is characterised in that：The device includes one Road residual voltage frequency loop, standby, residual voltage frequency signal is mutually redundant with fluted disc frequency（8）Voltage transformer side is derived from, through overfrequency Rate signal isolation becomes（9）Enter frequency signal change-over panel afterwards（10）Pulse signal is handled, using same with fluted disc frequency signal Mechanism processing and calculating rotating speed.
- 10. the measurement apparatus of any one contactless fluted disc frequency as described in claim 4-9, it is characterised in that：It is simultaneously complete Wriggle and detect into generating unit speed detection and unit.
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| CN109596854A (en) * | 2018-12-03 | 2019-04-09 | 湖南湘依铁路机车电器股份有限公司 | Velocity sensor is avoided to generate the method and structure of accidentally pulse when stopping shake |
| CN109725176A (en) * | 2019-02-21 | 2019-05-07 | 中国长江电力股份有限公司 | A kind of hydroelectric power plant's generating unit speed node calibration equipment and method of calibration |
| CN110208692A (en) * | 2019-04-26 | 2019-09-06 | 中国长江电力股份有限公司 | A kind of big axis wriggling detection method suitable for power station unit |
| CN111077367A (en) * | 2019-11-26 | 2020-04-28 | 中国南方电网有限责任公司 | One-out-of-three judgment and selection method for frequency measurement signal of speed regulator of water turbine |
| CN111308193A (en) * | 2019-11-20 | 2020-06-19 | 武汉海卓智控电气有限公司 | Frequency measurement method and system for hydroelectric generating set |
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| CN112858981A (en) * | 2021-01-14 | 2021-05-28 | 中国长江电力股份有限公司 | Frequency measurement device fault diagnosis method based on joint curve of water head, opening and frequency |
| CN113298088A (en) * | 2021-05-13 | 2021-08-24 | 中国长江电力股份有限公司 | Water turbine speed regulator frequency measurement method and device based on image recognition technology |
| CN113339282A (en) * | 2021-07-06 | 2021-09-03 | 西安航天动力研究所 | Non-contact precompression pump rotational speed measurement system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201016985Y (en) * | 2007-03-12 | 2008-02-06 | 武汉事达电气股份有限公司 | Water turbine programmable rotation rate signal apparatus based on voting output mode |
| CN201331536Y (en) * | 2008-12-30 | 2009-10-21 | 李峰 | Rotation speed signal monitoring device |
| CN101762716A (en) * | 2009-11-27 | 2010-06-30 | 哈尔滨电机厂有限责任公司 | Fluted disc speed measuring device for water turbine generator |
| CN201724944U (en) * | 2010-08-06 | 2011-01-26 | 天津水利电力机电研究所 | Intelligent rotate speed and peristalsis monitoring device |
| CN203799221U (en) * | 2014-02-13 | 2014-08-27 | 天津市天骄水电成套设备有限公司 | Programmable microcomputer speed signal device |
| CN104007281A (en) * | 2014-05-15 | 2014-08-27 | 国家电网公司 | Frequency measurement method, device and system for pumped storage unit |
| CN104535788A (en) * | 2015-01-09 | 2015-04-22 | 深圳东方锅炉控制有限公司 | Low-revolution-speed speed measurement and warning device and method |
| CN204613245U (en) * | 2015-05-22 | 2015-09-02 | 中国长江电力股份有限公司 | Fluted disc speed measuring comprehensive calibrator |
| CN105203794A (en) * | 2015-09-21 | 2015-12-30 | 华自科技股份有限公司 | Electric generator rotation speed measuring system and method |
| CN205049707U (en) * | 2015-10-28 | 2016-02-24 | 中国长江电力股份有限公司 | Non -contact hydroelectric set detecting device of wriggling |
| CN105628955A (en) * | 2015-12-25 | 2016-06-01 | 南京南瑞集团公司 | Speed measurement device for pump storage group static frequency converter and speed measurement method thereof |
| CN207148218U (en) * | 2017-09-18 | 2018-03-27 | 中国长江电力股份有限公司 | A kind of measurement apparatus of contactless fluted disc frequency |
-
2017
- 2017-09-18 CN CN201710842608.2A patent/CN107525967A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201016985Y (en) * | 2007-03-12 | 2008-02-06 | 武汉事达电气股份有限公司 | Water turbine programmable rotation rate signal apparatus based on voting output mode |
| CN201331536Y (en) * | 2008-12-30 | 2009-10-21 | 李峰 | Rotation speed signal monitoring device |
| CN101762716A (en) * | 2009-11-27 | 2010-06-30 | 哈尔滨电机厂有限责任公司 | Fluted disc speed measuring device for water turbine generator |
| CN201724944U (en) * | 2010-08-06 | 2011-01-26 | 天津水利电力机电研究所 | Intelligent rotate speed and peristalsis monitoring device |
| CN203799221U (en) * | 2014-02-13 | 2014-08-27 | 天津市天骄水电成套设备有限公司 | Programmable microcomputer speed signal device |
| CN104007281A (en) * | 2014-05-15 | 2014-08-27 | 国家电网公司 | Frequency measurement method, device and system for pumped storage unit |
| CN104535788A (en) * | 2015-01-09 | 2015-04-22 | 深圳东方锅炉控制有限公司 | Low-revolution-speed speed measurement and warning device and method |
| CN204613245U (en) * | 2015-05-22 | 2015-09-02 | 中国长江电力股份有限公司 | Fluted disc speed measuring comprehensive calibrator |
| CN105203794A (en) * | 2015-09-21 | 2015-12-30 | 华自科技股份有限公司 | Electric generator rotation speed measuring system and method |
| CN205049707U (en) * | 2015-10-28 | 2016-02-24 | 中国长江电力股份有限公司 | Non -contact hydroelectric set detecting device of wriggling |
| CN105628955A (en) * | 2015-12-25 | 2016-06-01 | 南京南瑞集团公司 | Speed measurement device for pump storage group static frequency converter and speed measurement method thereof |
| CN207148218U (en) * | 2017-09-18 | 2018-03-27 | 中国长江电力股份有限公司 | A kind of measurement apparatus of contactless fluted disc frequency |
Non-Patent Citations (4)
| Title |
|---|
| 周志军: "双冗余PCC步进式调速器", 2004中国水电控制设备论文集，工程科技Ⅱ辑, 30 June 2004 (2004-06-30), pages 132 - 137 * |
| 武汉水利电力学院: "《电测量仪表使用入门》", 中国水利出版社, pages: 120 - 122 * |
| 王峥: "WBST/D02-03型调速器在水电厂的应用", 湖北电力, no. 05, 28 August 2013 (2013-08-28), pages 62 - 64 * |
| 黄宝珠: "乌鲁瓦提水电厂调速器设备比选", 水利科技与经济, no. 07, 30 July 2012 (2012-07-30), pages 120 - 122 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596854A (en) * | 2018-12-03 | 2019-04-09 | 湖南湘依铁路机车电器股份有限公司 | Velocity sensor is avoided to generate the method and structure of accidentally pulse when stopping shake |
| CN109725176A (en) * | 2019-02-21 | 2019-05-07 | 中国长江电力股份有限公司 | A kind of hydroelectric power plant's generating unit speed node calibration equipment and method of calibration |
| CN109725176B (en) * | 2019-02-21 | 2024-03-12 | 中国长江电力股份有限公司 | Hydropower plant unit rotating speed node verification device and method |
| CN110208692A (en) * | 2019-04-26 | 2019-09-06 | 中国长江电力股份有限公司 | A kind of big axis wriggling detection method suitable for power station unit |
| CN111308193A (en) * | 2019-11-20 | 2020-06-19 | 武汉海卓智控电气有限公司 | Frequency measurement method and system for hydroelectric generating set |
| CN111077367A (en) * | 2019-11-26 | 2020-04-28 | 中国南方电网有限责任公司 | One-out-of-three judgment and selection method for frequency measurement signal of speed regulator of water turbine |
| CN112816732A (en) * | 2020-12-30 | 2021-05-18 | 中国船舶工业系统工程研究院 | Detection device for detecting rotation of low-speed diesel engine |
| CN112858981A (en) * | 2021-01-14 | 2021-05-28 | 中国长江电力股份有限公司 | Frequency measurement device fault diagnosis method based on joint curve of water head, opening and frequency |
| CN112858981B (en) * | 2021-01-14 | 2022-03-15 | 中国长江电力股份有限公司 | Frequency measurement device fault diagnosis method based on joint curve of water head, opening and frequency |
| CN113298088A (en) * | 2021-05-13 | 2021-08-24 | 中国长江电力股份有限公司 | Water turbine speed regulator frequency measurement method and device based on image recognition technology |
| CN113339282A (en) * | 2021-07-06 | 2021-09-03 | 西安航天动力研究所 | Non-contact precompression pump rotational speed measurement system |
| CN113339282B (en) * | 2021-07-06 | 2022-07-05 | 西安航天动力研究所 | Non-contact precompression pump rotational speed measurement system |
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