CN203785697U - Calibration tool for large-scale water turbine governor main feedback sensor - Google Patents
Calibration tool for large-scale water turbine governor main feedback sensor Download PDFInfo
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- CN203785697U CN203785697U CN201420145565.4U CN201420145565U CN203785697U CN 203785697 U CN203785697 U CN 203785697U CN 201420145565 U CN201420145565 U CN 201420145565U CN 203785697 U CN203785697 U CN 203785697U
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- sensor
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- water turbine
- aviation
- scale water
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Abstract
Provided is a calibration tool for a large-scale water turbine governor main feedback sensor. The tool comprises a ranging module disposed on a magnetic sliding block. The ranging module is connected with a first input end and a first aviation joint of a transmitter. The second input end and the output end of the transmitter are respectively connected with a second aviation joint and a third aviation joint. A changing-over handle is connected with a fourth aviation joint. Using the structure, the aviation joints are connected with a sensor circuit. When the tool is used, current values output by the ranging module and current values fed back by the sensor circuit in a process that the ranging module slides are transmitted to the transmitter. The tool performs linearity check on the sensor through the current value output by the transmitter. When the sliding block slides to an all-off position or an all-on position which need calibration, the handle is switched to an all-off contact circuit or an all-on contact circuit. An editing current pin and a corresponding current output pin in the sensor are connected in a short circuit through the pin of the aviation joint, so the tool can preferably calibrate output standard of a corresponding position, and an objective of calibrating the sensor again is achieved.
Description
Technical field
The utility model relates to a kind of sensor calibration instrument, is specifically related to a kind of test instrument that large-scale water turbine governing system master connects the feedback transducer linearity and range check, demarcation that is applied to.
Background technology
Existing Turbine Governor System master connects feedback transducer and generally adopts straight line magneto strictive sensor or elastic wire sensor, and installation site is parallel with main servomotor, is used for measuring water wheels unit servomotor and water guide leaf divergence and feedback position.
Yet because working position is severe and mechanical vibration, the hydraulic turbine for a long time operation can cause linear sensor degree to change and the electric zero point drift of sensor 4-20mA standard-sized sheet, complete shut-down position, need to carry out to sensor the demarcation again of the check of the linearity and standard-sized sheet, complete shut-down position.
Now to the check of sensor and again demarcate and need primer fluid pressing system action servomotor to carry out, and a lot of middle-size and small-size power plant often do not have, this class formation is complicated, expensive equipment, can not well to sensor, check and staking-out work again, equipment and staff's life security has been caused to certain potential safety hazard.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and provide a kind of to solve existing sensor assay device structures complicated, expensive, can not in middle-size and small-size power plant, extensively popularize the test instrument that is applied to the large-scale water turbine governing system main relay feedback transducer linearity and range check, demarcation of the problem of use.
The object of utility model is achieved in that
A kind of large-scale water turbine speed regulator master connects feedback transducer calibration instrument, it comprises the range finder module being arranged on mangneto slide block, range finder module is connected with first input end, first Aviation Connector of transmitter respectively, the second input end of transmitter and output terminal are connected with the second Aviation Connector, the 3rd Aviation Connector respectively, switch handle and are connected with the 4th Aviation Connector.
Between above-mentioned transmitter and the 3rd Aviation Connector, be provided with multimeter test splice.
Above-mentioned range finder module is provided with LCDs.
In above-mentioned switching handle, there are two groups of normal opened contacts, correspond respectively to 4mA complete shut-down position and 20mA fully open position.
The utility model has been obtained following technique effect:
Adopt said structure, first each Aviation Connector of the present utility model is connected with sensor loop, during use, the current value that the current value of range finder module output and sensor loop are fed back in range finder module sliding process is all transferred to transmitter, and the current value of exporting by transmitter carries out the check of the linearity to sensor; Simultaneously, when slide block slides into the complete shut-down position that needs demarcation, handle switches to complete shut-down contact loop, by aviation plug stitch, electric current stitch and corresponding electric current output pin-strapping will be revised in sensor, the outputting standard that can well demarcate relevant position, reaches the object that sensor is demarcated again.
Adopt the structure that is provided with multimeter test splice between transmitter and the 3rd Aviation Connector, can facilitate staff at any time this place's electric signal to be carried out to hand inspection detection in the utility model use procedure, the LCDs that range finder module is provided with can facilitate staff's observation, can effectively improve the reliability of data;
Adopt to switch in handle and there are two groups of normal opened contacts, correspond respectively to the structure of 4mA complete shut-down position and 20mA fully open position, can carry out clear and definite demarcation to sensing station, mangneto slide block is in the process of sliding like this, sensor output feedback current value changes between 4mA-20mA, can well by the corresponding relation of measuring distance and current value, check the linearity, and by transmitter, adjust the linearity of output current.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the structural representation of embodiment.
Embodiment
embodiment 1:
A kind of large-scale water turbine speed regulator master connects feedback transducer calibration instrument as shown in Figure 1, it comprises the range finder module 1 being arranged on mangneto slide block, range finder module 1 is connected with first input end, first Aviation Connector 3 of transmitter 2 respectively, the second input end of transmitter 2 and output terminal are connected with the second Aviation Connector 4, the 3rd Aviation Connector 6 respectively, switch handle 7 and are connected with the 4th Aviation Connector 8.
Preferably, range finder module is infrared distance measurement module.
Between described transmitter 2 and the 3rd Aviation Connector 6, be provided with multimeter test splice 5, can facilitate staff at any time this place's electric signal to be carried out to hand inspection detection in the utility model use procedure.
Described range finder module 1 is provided with LCDs, can facilitate staff's observation.
In described switching handle 7, there are two groups of normal opened contacts, correspond respectively to 4mA complete shut-down position and 20mA fully open position.
Adopt said structure, first each Aviation Connector of the present utility model is connected with sensor loop, during use, the current value that the current value of infrared distance measurement module output and sensor loop are fed back in infrared distance measurement module sliding process is all transferred to transmitter, and the current value of exporting by transmitter carries out the check of the linearity to sensor; Simultaneously, when slide block slides into the complete shut-down position that needs demarcation, handle switches to complete shut-down contact loop, by aviation plug stitch, electric current stitch and corresponding electric current output pin-strapping will be revised in sensor, the outputting standard that can well demarcate relevant position, reaches the object that sensor is demarcated again;
Adopt to switch in handle and there are two groups of normal opened contacts, correspond respectively to the structure of 4mA complete shut-down position and 20mA fully open position, can carry out clear and definite demarcation to sensing station, mangneto slide block is in the process of sliding like this, sensor output feedback current value changes between 4mA-20mA, can well by the corresponding relation of measuring distance and current value, check the linearity, and by transmitter, adjust the linearity of output current.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from improvement, the change done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (4)
1. a large-scale water turbine speed regulator master connects feedback transducer calibration instrument, it is characterized in that: it comprises the range finder module (1) being arranged on mangneto slide block, range finder module (1) is connected with first input end, first Aviation Connector (3) of transmitter (2) respectively, the second input end of transmitter (2) and output terminal are connected with the second Aviation Connector (4), the 3rd Aviation Connector (6) respectively, switch handle (7) and are connected with the 4th Aviation Connector (8).
2. large-scale water turbine speed regulator master according to claim 1 connects feedback transducer calibration instrument, it is characterized in that: between described transmitter (2) and the 3rd Aviation Connector (6), be provided with multimeter test splice (5).
3. large-scale water turbine speed regulator master according to claim 1 connects feedback transducer calibration instrument, it is characterized in that: described range finder module (1) is provided with LCDs.
4. large-scale water turbine speed regulator master according to claim 1 connects feedback transducer calibration instrument, it is characterized in that: in described switching handle (7), have two groups of normal opened contacts, correspond respectively to 4mA complete shut-down position and 20mA fully open position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145565.4U CN203785697U (en) | 2014-03-28 | 2014-03-28 | Calibration tool for large-scale water turbine governor main feedback sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145565.4U CN203785697U (en) | 2014-03-28 | 2014-03-28 | Calibration tool for large-scale water turbine governor main feedback sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203785697U true CN203785697U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420145565.4U Expired - Fee Related CN203785697U (en) | 2014-03-28 | 2014-03-28 | Calibration tool for large-scale water turbine governor main feedback sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203785697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199309A (en) * | 2014-09-03 | 2014-12-10 | 长江三峡能事达电气股份有限公司 | Analog channel calibrating method of simulating and testing instrument of hydro turbine governor |
-
2014
- 2014-03-28 CN CN201420145565.4U patent/CN203785697U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199309A (en) * | 2014-09-03 | 2014-12-10 | 长江三峡能事达电气股份有限公司 | Analog channel calibrating method of simulating and testing instrument of hydro turbine governor |
| CN104199309B (en) * | 2014-09-03 | 2016-08-31 | 长江三峡能事达电气股份有限公司 | Hydrogovernor simulating and testing instrument analog channel calibration steps |
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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 |
Granted publication date: 20140820 Termination date: 20180328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |