CN205484412U - Rotational speed calibration equipment with variable frequency speed governing(VFSG) function - Google Patents
Rotational speed calibration equipment with variable frequency speed governing(VFSG) function Download PDFInfo
- Publication number
- CN205484412U CN205484412U CN201620240415.0U CN201620240415U CN205484412U CN 205484412 U CN205484412 U CN 205484412U CN 201620240415 U CN201620240415 U CN 201620240415U CN 205484412 U CN205484412 U CN 205484412U
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- speed
- rotational speed
- sensor
- motor
- gear
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Abstract
The utility model relates to a calibration equipment of the tachometry instrument of the large -scale favourable turn equipment of chemical industry and electric power enterprise, concretely relates to rotational speed calibration equipment with variable frequency speed governing(VFSG) function, including power, signal generator, converter, motor, speed sensor, sensor fixed support, preamplifier and rotational speed instrument, for the converter power supply behind the power process signal generator, the gear is installed to the rotational speed of converter control motor on the rotor of motor, sensor fixed support sets up under the gear, sets up the mounting hole that a plurality of is used for fixed speed sensor on the support, speed sensor passes through preamplifier and rotational speed instrument connecting. The utility model provides it is high to required speed detection instrument measuring accuracy of large -scale favourable turn equipment and security, provide the guarantee for the long period run of safety of large -scale favourable turn equipment.
Description
Technical field
This utility model relates to the calibration equipment of the tachometer of chemical industry and electric power enterprise large-scale favourable turn equipment,
It is specifically related to a kind of rotational speed calibrator with frequency control function.
Background technology
Rotating speed is energy device and an important characterisitic parameter in dynamic power machine performance test.Because power
The numerous characteristics parameter of machinery is to determine with the functional relationship of rotating speed according to them, the row of such as compressor
Tolerance, shaft power, the output etc. of internal combustion engine, and the vibration of dynamic power machine, chimneying pulsation,
The state of wear of various working parts etc. are all closely related with rotating speed.The most accurately measure rotating speed to understanding equipment
Operation, improve the quality of product and efficiency be significant.
When electrical power generators frequency is consistent with external power grid frequency, just can generate electricity by way of merging two or more grid systems, electromotor start-up,
Need progressively raising speed, rotating speed is controlled in the nominal speed range of electromotor；If rotating speed is too high, can make
Become electromotor runaway accident and destroy the generation of power grid accident.For ensureing that it effectively runs, it is to avoid accident
Occurring, speed probe need to regularly check and verify, and guarantees that the accuracy of tachometric survey is with steady with this
Qualitative.
Sensor install and equipment rebuilding during, it is impossible to rotating speed instrument and sensor are carried out periodic check and
Confirm, make tachometric survey cannot effectively be monitored guarantee in process of production.
Summary of the invention
This utility model is for defect present in prior art, it is provided that a kind of have turning of frequency control function
Speed calibration equipment, ensure that rotating speed instrument and sensor can be with periodic check and dimensions during favourable turn equipment rebuilding
Protect, to ensure the accuracy of favourable turn equipment run duration rotating speed instrument measurement, so that it is guaranteed that the fortune of favourable turn equipment
Row safety.
The technical solution of the utility model is:
A kind of rotational speed calibrator with frequency control function, including power supply, signal generator, converter,
Motor, speed probe, sensor fixed support, preamplifier and rotating speed instrument；Described power supply warp
It is inverter supply after crossing signal generator, the rotating speed of inverter control motor, the rotor of motor is pacified
Equipped with gear；Described sensor fixed support is arranged on the underface of gear, support offers several and uses
Installing hole in fixed rotating speed sensor；Described speed probe is connected with rotating speed instrument by preamplifier.
The number of teeth of described gear is 60 teeth, and modulus is 2 moulds.
The rated speed of described motor is 3000rpm/min.
The diameter of described installing hole is respectively 8mm, 11mm, 12mm.
Gap between described speed probe top and gear is 1～1.5mm, and guarantees preamplifier SIG
And the voltage between COM is-10VDC.
Described signal generator applies the current signal of 4～20mADC to converter.
Described speed probe uses magnetoresistive transducer or current vortex sensor.
The beneficial effects of the utility model are:
This utility model improves the accuracy of Rotating speed measring instrument measurement needed for large-scale favourable turn equipment and safety
Property, the safe long-term operation for large-scale favourable turn equipment provides guarantee.
Accompanying drawing explanation
Fig. 1 is front elevational schematic of the present utility model；
Fig. 2 is schematic side view of the present utility model；
Fig. 3 is the connection diagram of rotating speed instrument and speed probe.
In figure, the implication representated by sequence number is: 1. power supply, 2. signal generator, 3. converter, 4. motor,
5. speed probe, 6. sensor fixed support, 7. preamplifier, 8. rotating speed instrument, 9. gear, 10.
Installing hole.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is described in further detail by detailed description of the invention:
See shown in Fig. 1 to Fig. 3, a kind of rotational speed calibrator with frequency control function, including power supply 1,
Signal generator 2, converter 3, motor 4, speed probe 5, sensor fixed support 6, front storing
Big device 7 and rotating speed instrument 8；Described power supply 1 is powered for converter 3 after signal generator 2, converter
3 rotating speeds controlling motor 4, the rotor of motor 4 is provided with gear 9；Described sensor fixed support
6 underfaces being arranged on gear 9, support offers several installing holes for fixed rotating speed sensor 5
10；Described speed probe 5 is connected with rotating speed instrument 8 by preamplifier 7.
The number of teeth of described gear 9 is 60 teeth, and modulus is 2 moulds.The rated speed of described motor 4 is
3000rpm/min.The diameter of described installing hole 10 is respectively 8mm, 11mm, 12mm.Described speed probe
Gap between 5 tops and gear 9 is 1～1.5mm, it is ensured that the voltage between preamplifier 7SIG and COM
For-10VDC.Described signal generator 2 applies the current signal of 4～20mADC to converter 3.Described turn
Speed sensor 5 uses magnetoresistive transducer or current vortex sensor.
In actual use, speed probe 5 to be checked and rated rotational frequency sensor 5 are installed on sensor solid
In the suitable installing hole 10 of fixed rack 6, and ensure that the gap between speed probe 5 top and gear 9 is
1～1.5mm, then speed probe 5 is connected with rotating speed instrument 8 by preamplifier 7, fine setting turns
Gap between speed sensor 5 and gear 9, it is ensured that the voltage between preamplifier 7SIG and COM is
After-10VDC, speed probe 5 is fixed in installing hole 10.Adjust rotating speed instrument 8 parameter to be checked, by tooth
Tooth number is set to 60 teeth, and rotating speed instrument 8 range to be checked arranges consistent with rated rotational frequency instrument 8 range, with
Time set needed for rotating speed alarming value.Then, to converter 3, motor 4, rotating speed instrument 8 to be checked and mark
Quasi-rotating speed instrument 8 powers on, and outer signal generator 2 applies the current signal of 4～20mADC to converter 3,
Motor 4 rotating speed is carried out progressively raising speed by 0～3000rpm/min, record respectively 600rpm/min,
When 1200rpm/min, 1800rpm/min, 2400rpm/min, 3000rpm/min standard rotational speed meters table 8 and
The display numerical value of rotating speed instrument 8 to be checked, and calculate its measurement error, set according to rotating speed instrument 8 to be checked simultaneously
Fixed rotating speed alarming value circuit tester checks the Reliability of Microprocessor of its warning contact.
Only preferred embodiment of the present utility model described here, not in order to limit this utility model,
All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all should
Within being included in protection domain of the present utility model.
Claims (7)
1. a rotational speed calibrator with frequency control function, it is characterised in that: include power supply, signal generator, converter, motor, speed probe, sensor fixed support, preamplifier and rotating speed instrument；Described power supply is inverter supply after signal generator, and the rotating speed of inverter control motor is provided with gear on the rotor of motor；Described sensor fixed support is arranged on the underface of gear, and support offers several installing holes for fixed rotating speed sensor；Described speed probe is connected with rotating speed instrument by preamplifier.
A kind of rotational speed calibrator with frequency control function the most according to claim 1, it is characterised in that: the number of teeth of described gear is 60 teeth, and modulus is 2 moulds.
A kind of rotational speed calibrator with frequency control function the most according to claim 2, it is characterised in that: the rated speed of described motor is 3000rpm/min.
A kind of rotational speed calibrator with frequency control function the most according to claim 3, it is characterised in that: the diameter of described installing hole is respectively 8mm, 11mm, 12mm.
A kind of rotational speed calibrator with frequency control function the most according to claim 1, it is characterised in that: the gap between described speed probe top and gear is 1～1.5mm, and guarantees that the voltage between preamplifier SIG and COM is-10VDC.
A kind of rotational speed calibrator with frequency control function the most according to claim 1, it is characterised in that: described signal generator applies the current signal of 4～20mADC to converter.
A kind of rotational speed calibrator with frequency control function the most according to claim 1, it is characterised in that: described speed probe uses magnetoresistive transducer or current vortex sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620240415.0U CN205484412U (en) | 2016-03-25 | 2016-03-25 | Rotational speed calibration equipment with variable frequency speed governing(VFSG) function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620240415.0U CN205484412U (en) | 2016-03-25 | 2016-03-25 | Rotational speed calibration equipment with variable frequency speed governing(VFSG) function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205484412U true CN205484412U (en) | 2016-08-17 |
Family
ID=56653060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620240415.0U Expired - Fee Related CN205484412U (en) | 2016-03-25 | 2016-03-25 | Rotational speed calibration equipment with variable frequency speed governing(VFSG) function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205484412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761136A (en) * | 2018-08-31 | 2018-11-06 | 仪凤机电（嘉兴）检测技术服务有限公司 | A kind of coolant pump rotational speed monitor system testing calibration device and its testing calibration method |
-
2016
- 2016-03-25 CN CN201620240415.0U patent/CN205484412U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761136A (en) * | 2018-08-31 | 2018-11-06 | 仪凤机电（嘉兴）检测技术服务有限公司 | A kind of coolant pump rotational speed monitor system testing calibration device and its testing calibration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20170325 |