CN208459563U - Hydro turbine governor static properties test macro - Google Patents
Hydro turbine governor static properties test macro Download PDFInfo
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- CN208459563U CN208459563U CN201821233438.4U CN201821233438U CN208459563U CN 208459563 U CN208459563 U CN 208459563U CN 201821233438 U CN201821233438 U CN 201821233438U CN 208459563 U CN208459563 U CN 208459563U
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Abstract
The utility model discloses hydro turbine governor static properties test macro, including data collecting card, the AI0 analog input port of the data collecting card and the master of Hydropower Unit connect sensor port connection, the A/D conversion module of the data collecting card is connect with PC machine usb communication, the PC machine is connect with the crystal oscillator module usb communication of the data collecting card, the port Ctr0 of the data collecting card is connect with amplification circuit module port, the amplification circuit module is connect with the governor port of Hydropower Unit group, the device has used 100MHz crystal oscillator frequency, so that device frequency resolution with higher, the simulation unit frequency of output that can be more accurate under different tests, the frequency acquisition of the port analog quantity AI0 can be made to reach 500kS/s's, it is possible thereby to more Accurately measurement unit servomotor is failure to actuate the time, the various tests of the static properties of completion hydrogovernor that can be automatic accurate.
Description
Technical field
The utility model relates to hydro turbine governor static properties testing field more particularly to hydro turbine governor are quiet
State Performance Test System.
Background technique
The superiority and inferiority of the performance of governor directly affects its safety for controlling precision and unit entirety in turbine-generator units
Can, therefore it is then extremely important to the performance test of governor.
It include that static characteristic test, intrinsic dead zone testing experiment, servomotor are failure to actuate time test to governor testing experiment
The tests such as test, the test of switching on and shutting down actuation time.Wherein in the test such as static characteristic and dead zone test, artificial external device hair frequency was both
It is time-consuming and laborious, and it is synchronous to be unable to satisfy equipment, and national standard governor frequency measurement dead zone is within 0.01Hz, and general test
The measuring accuracy of device will reach 10 times of measurand precision or more, it requires the dead of the frequency of signal generator of measuring device
Area should be less than 0.001Hz, i.e. its crystal oscillator frequency at least requires as 2.5MHz.
But existing market Hydropower Unit debugger test device is largely developed by core processor of single-chip microcontroller,
Its many clock frequency is about 1MHz or so, is thus extremely difficult to the measurement accuracy requirement of current international standard.And it is based on
The test device of microcomputer development needs to construct complicated peripheral circuit, also influences whether the measuring accuracy of equipment and portable in this way
Ability.A set of hydro turbine governor static tester how is designed and developed, is far longer than it in hair frequency and frequency-measurement accuracy
The complexity that proper development platform reduces peripheral circuit to reach measurement accuracy requirement, while being chosen in national Specification dead zone
Degree is that this patent will solve the problems, such as.
Utility model content
Technical problem to be solved by the utility model is: the utility model is tested by hydro turbine governor static properties
System, it is cumbersome and time consuming to solve the artificial external device hair frequency of the prior art, and it is unable to satisfy the synchronous problem of equipment and list
Piece machine is the problem that the Hydropower Unit debugger test device measuring accuracy of core processor is not high and portability is bad.
The technical solution of the utility model is: hydro turbine governor static properties test macro, including data collecting card,
The AI0 analog input port of the data collecting card and the master of Hydropower Unit connect sensor port connection, the data acquisition
The A/D conversion module of card is connect with PC machine usb communication, and the crystal oscillator module usb communication of the PC machine and the data collecting card connects
It connects, the port Ctr0 of the data collecting card is connect with amplification circuit module port, the amplification circuit module and Hydropower Unit
The governor port connection of group.
The AI0 analog input port of the data collecting card is connect with A/D conversion module port.
Crystal oscillator module on the data collecting card is logical with counter module on data collecting card and A/D conversion module respectively
Cross port connection.
The fixed frequency signal frequency that the crystal oscillator module generates is 100MHz.The fixed frequency of the 100MHz that crystal oscillator module generates
Rate signal is connect with counter module by port, respectively the different frequency pulse signal of parameter under different countings, then is passed through
The output of the port Ctr0
The test method of hydro turbine governor static properties test macro, comprising the following steps:
Step 1: the good test procedure of PC machine internal composition first gives the instruction of data collecting card one fixed 50Hz frequency；
Step 2: data collecting card modifies counter module count value automatically, then is cooperated by crystal oscillator module fixed frequency
It is common to generate 50+ △X Hz frequency pulse signal is sent out by the port Ctr0, believes frequency pulse using amplified signal module
Number it is converted into the port PT that a-c cycle signal passes to hydro turbine governor；
Step 3: the guide vane opening of Hydropower Unit is adjusted after receiving signal the port PT of hydro turbine governor
Section；
Step 4: the position letter that data collecting card passes through the guide vane opening of AI0 analog input port processing Hydropower Unit
Number；
Step 5: guide vane signal is handled by the A/D conversion module inside data collecting card, is converted to digital letter
Number usb communications are to PC machine；
Step 6: PC machine will obtain guide vane signal and judge it, and recording and storage after guide vane is stablized retransmits down
One Frequency point, return step two continue to execute；
Step 7: it after all Frequency points instruction for completing each pilot project, is carried out by the guide vane opening data of storage
It calculates, acquires the performance indicators such as dead zone, linearity error degree.
The beneficial effects of the utility model are: the device has used 100MHz crystal oscillator frequency, so that device is with higher
Frequency resolution, the simulation unit frequency of output that can be more accurate under different tests, such as: in the testing experiment of dead zone
Speed dead bend method is tested with step frequency signal, it is necessary to which accurately frequency resolution is implemented；Simultaneously based on higher
Crystal oscillator frequency, the frequency acquisition of the port analog quantity AI0 can be made to reach 500kS/s, it is possible thereby to more accurately survey
Amount unit servomotor is failure to actuate the time.The static characteristic examination for the completion hydrogovernor that the equipment can be automatic accurate in terms of comprehensive
Test, speed dead bend test, servomotor be failure to actuate the time test, machine frequency verification test etc., convenient for test complete.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of utility model device.
Specific embodiment
With reference to the accompanying drawing and utility model is described further in specific embodiment:
Hydro turbine governor static properties test macro, including data collecting card, the AI0 simulation of the data collecting card
The master of amount input port and Hydropower Unit connects sensor port connection, the A/D conversion module and PC machine USB of the data collecting card
Communication connection, the PC machine are connect with the crystal oscillator module usb communication of the data collecting card, the end Ctr0 of the data collecting card
Mouth is connect with amplification circuit module port, and the amplification circuit module is connect with the governor port of Hydropower Unit group.
The AI0 analog input port of the data collecting card is connect with A/D conversion module port.
Crystal oscillator module on the data collecting card is logical with counter module on data collecting card and A/D conversion module respectively
Cross port connection.
The fixed frequency signal frequency that the crystal oscillator module generates is 100MHz.The fixed frequency of the 100MHz that crystal oscillator module generates
Rate signal is connect with counter module by port, respectively the different frequency pulse signal of parameter under different countings, then is passed through
The output of the port Ctr0
The test method of hydro turbine governor static properties test macro, comprising the following steps:
Step 1: the good test procedure of PC machine internal composition first gives the instruction of data collecting card one fixed 50Hz frequency；
Step 2: data collecting card modifies counter module count value automatically, then is cooperated by crystal oscillator module fixed frequency
It is common to generate 50+ △X Hz frequency pulse signal is sent out by the port Ctr0, believes frequency pulse using amplified signal module
Number it is converted into the port PT that a-c cycle signal passes to hydro turbine governor；
Step 3: the guide vane opening of Hydropower Unit is adjusted after receiving signal the port PT of hydro turbine governor
Section；
Step 4: the position letter that data collecting card passes through the guide vane opening of AI0 analog input port processing Hydropower Unit
Number；
Step 5: guide vane signal is handled by the A/D conversion module inside data collecting card, is converted to digital letter
Number usb communications are to PC machine；
Step 6: PC machine will obtain guide vane signal and judge it, and recording and storage after guide vane is stablized retransmits down
One Frequency point, return step two continue to execute；
Step 7: it after all Frequency points instruction for completing each pilot project, is carried out by the guide vane opening data of storage
It calculates, acquires the performance indicators such as dead zone, linearity error degree.
The data collecting card is USB-6343 model.
Claims (4)
1. hydro turbine governor static properties test macro, it is characterised in that: including data collecting card, the data collecting card
AI0 analog input port and Hydropower Unit master connect sensor port connection, the A/D conversion module of the data collecting card
It is connect with PC machine usb communication, the PC machine is connect with the crystal oscillator module usb communication of the data collecting card, the data acquisition
The port Ctr0 of card is connect with amplification circuit module port, and the governor port of the amplification circuit module and Hydropower Unit group connects
It connects.
2. hydro turbine governor static properties test macro according to claim 1, it is characterised in that: the data are adopted
The AI0 analog input port of truck is connect with A/D conversion module port.
3. hydro turbine governor static properties test macro according to claim 1, it is characterised in that: the data are adopted
Crystal oscillator module on truck is connect with counter module on data collecting card and A/D conversion module by port respectively.
4. hydro turbine governor static properties test macro according to claim 3, it is characterised in that: the crystal oscillator mould
The fixed frequency signal frequency that block generates is 100MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233438.4U CN208459563U (en) | 2018-08-01 | 2018-08-01 | Hydro turbine governor static properties test macro |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233438.4U CN208459563U (en) | 2018-08-01 | 2018-08-01 | Hydro turbine governor static properties test macro |
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| CN208459563U true CN208459563U (en) | 2019-02-01 |
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| CN201821233438.4U Active CN208459563U (en) | 2018-08-01 | 2018-08-01 | Hydro turbine governor static properties test macro |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802615A (en) * | 2018-08-01 | 2018-11-13 | 贵州电网有限责任公司 | Hydro turbine governor static properties tests system and its test method |
-
2018
- 2018-08-01 CN CN201821233438.4U patent/CN208459563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802615A (en) * | 2018-08-01 | 2018-11-13 | 贵州电网有限责任公司 | Hydro turbine governor static properties tests system and its test method |
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