CN2341117Y - Non-contact linear position transmitter - Google Patents
Non-contact linear position transmitter Download PDFInfo
- Publication number
- CN2341117Y CN2341117Y CN 98205785 CN98205785U CN2341117Y CN 2341117 Y CN2341117 Y CN 2341117Y CN 98205785 CN98205785 CN 98205785 CN 98205785 U CN98205785 U CN 98205785U CN 2341117 Y CN2341117 Y CN 2341117Y
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- CN
- China
- Prior art keywords
- main shaft
- position transmitter
- utility
- model
- cone
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a contactless linear displacement type position transmitter. The utility model is characterized in that one end of a main shaft is connected with an axial inclined plane cam of an electric executive mechanism, the other end of the main shaft is connected with a position meter, the main shaft is provided with a measuring cone, one side of which is provided with an integral displacement sensor, and the measuring cone is connected with the main shaft which is pressed tightly on the inclined plane cam of the electric executive mechanism by a spring; an adjusting bolt is arranged between the main shaft and the position meter, the measuring cone does not contact the integral displacement sensor which is arranged on one side of the measuring cone and the displacement sensor is an eddy sensor. The utility model has the advantages of reliable work, high measuring precision, simple structure and convenient operation.
Description
The utility model relates to a kind of contactless straight-line displacement type position transmitter, position transmitter is the position dispensing device in the electric operator, be mainly used to show the aperture of electric operator by-pass valve control (baffle plate), the utility model is particularly related to and a kind ofly is fit to be used in that controlled device is frequent under operating condition adjusts and do not allow that the long period is in the contactless straight-line displacement type position transmitter on standard-sized sheet or complete shut-down valve (baffle plate) electric operator.
Existing position transmitter still adopts the measurement component of differential transformer as transmitter, its shortcoming is to have false zero-bit, measuring accuracy low, poor stability, the power consumption height, maintenance is big, though have part to adopt the push-and-pull potentiometer as measurement component, he still has frequent wearing and tearing, loose contact, the deficiency that failure rate is high.And the common issue with of two kinds of position transmitter existence is: in a single day operating transmitter breaks down, controlled valve (baffle plate) standard-sized sheet and complete shut-down could must be adjusted the zero-bit and the full scale indicated value of valve (baffle plate) during replacing, but most valve in service (baffle plate) is not allowed standard-sized sheet and complete shut-down, do not know the definite position of valve (baffle plate) aperture behind the replacing position transmitter, make production run lose the supervision means of safety economy, bring great inconvenience to production, and just can carry out definite adjustment after can only waiting equipment to stop transport.
In view of this, how to make position transmitter when displacement measurement, avoid contact, and make the user in equipment running process, to safeguard; And simple in structure, therefore can't increase on the cost under many situations, just can bring easy to use greatly, the work efficiency that increases substantially, the utility model grinds and creates the motivation place just.
The utility model designer, does a brand-new design and constitutes on the basis of feasibility study repeatedly by means of being engaged in the practical experience in fields such as all kinds of electronic survey instrument production and processings decades, gets generation of the present utility model eventually.
At the deficiencies in the prior art, the purpose of this utility model is a kind of contactless straight-line displacement type position transmitter of design, reliable operation, and the measuring accuracy height, simple in structure, easy to use.
Principle of the present utility model is that the employing non-contact turbulent flow sensor substitutes differential transformer and the push-and-pull potentiometer is the position transmitter of measuring sensor, measuring accuracy is better than 1%, long-time stability are good, power supply, detection, amplification, analog quantity, switching value output circuit are encapsulated in the same metal shell, strong interference immunity, zeroing is arranged on the displacement transducer, transfer full potentiometer, forward and reverse setting, output current detects, and has light to show and send the switch of cutting off of switching value signal controlling electric operator during extreme position.
The utility model especially is in operation and breaks down when needing to change, and can accurately determine the definite position of valve (baffle plate), does not need operating valve (baffle plate) standard-sized sheet, complete shut-down just can accurately change.The stoppage in transit number of times of minimizing equipment is saved substantial contribution, improves the security of industrial automation level and operation.
The utility model is achieved in that the end that is characterised in that main shaft 3 and the axial slope cam 9 of electric operator join, other end link position table 5, be equipped with on the main shaft and measure cone 1, cone one side is equipped with integrated displacement transducer 8, measures cone and links to each other with main shaft; Main shaft is pressed on the surface cam 9 of topworks by spring 6; At main shaft 3 and 5 of location tables adjustment bolt 4 is housed; Having the gap between the integrated displacement transducer 8 that cone and one side are installed does not contact; Displacement transducer 8 is an eddy current sensor.This displacement transducer is converted to current signal with the displacement that records, location tables also demonstrates and the corresponding to displacement of the magnitude of current simultaneously, when cone is displaced to zero-bit or full scale, displacement transducer sends electric switch amount signal according to the magnitude of current, be used for controlling the switch of cutting off of electronic execution, have corresponding signal lamp to light on the simultaneous displacement sensor, expression topworks has rotated to the limit, and servomotor stops operating.
Further illustrate the utility model below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural drawing.
Critical piece of the present utility model is installed in the metal shell of being made up of drain pan and loam cake, main drive disk assembly is installed in the bracing frame 2, main shaft 3 reaches in the electric operator by drain pan oil sealing 7, rely on spring 6 main shaft to be pressed on the surface cam 9 of topworks, when surface cam rotates with electric operator, promoting motion of main shaft makes electric operator go out the amount of exercise that arm of force corner variable quantity becomes main shaft, and the probe spacing of measuring cone and displacement transducer is changed, displacement transducer is converted to the magnitude of current with the variable in distance amount.The location tables 5 that the main shaft other end connects is measured the displacement of main shaft simultaneously, when controlled valve (baffle plate) is located standard-sized sheet or complete shut-down, output current and setting value are compared and are exported the switch of cutting off of switching value signal controlling standard-sized sheet, complete shut-down, disconnect the electric operator motor power.
Use first according to the following step and debug: when controlled valve (baffle plate) complete shut-down, the minimum position, surface of contact place of the surface cam of electric operator, the both forward and reverse directions on the position transmitter is set to forward.Rotate adjustment bolt 4 and make the measurement cone be in reference position, position transmitter is output as 0%, and the switch of cutting off that closes direction disconnects, and the pointer of location tables is transferred to zero-bit; With controlled valve (baffle plate) standard-sized sheet, that transfers that the full scale potentiometer makes position transmitter outputs to 100%, evolution to the switch of cutting off disconnect the position during record position table standard-sized sheet.Perhaps make the full scale mark on location tables, bolt 4 is adjusted in locking, and debugging finishes.
Just in case the utility model in service breaks down, and loses output current, according to two data A current location table designation datas of location tables.The indicated value of B valve (baffle plate) 100%.Can debug out a standby position transmitter in the laboratory, current designation data A is installed on the electric operator according to the location of fault transmitter, utilize the adjustment bolt 4 of position transmitter to check zero-bit full scale and the correctness of cutting off switch motion, indicated data when then location tables being adjusted to fault, bolt is adjusted in locking, and more changing jobs declares to be finished.
The utility model has overcome the main drawback of differential transformer type position transmitter: false zero-bit phenomenon, measuring accuracy is low, nonlinearity erron is big, and power consumption is high; And the wearing and tearing easily of push-and-pull potentiometer formula position transmitter, loose contact of present use, the shortcoming that maintenance is big have been overcome.
The utility model can be matched in homemade DKJ, DZJ, the various electric operators of DKZ; The most suitable be applied to valve controlled in the varitrol (baffle plate) be in operation do not allow that the long period is in standard-sized sheet, complete shut-down and the topworks that acts frequently on.
In sum, the utility model can utilize simple structural design, uses product measuring accuracy of the present utility model and reliability to increase substantially, and is easy to use.Obviously the utility model is the new design of a kind of novelty, progress and dark tool practicality.The above is specific embodiment of the utility model and the know-why used, if the equivalence of doing according to conception of the present utility model changes, when the function that it produced does not exceed spiritual that instructions and accompanying drawing contain yet, all should be in scope of the present utility model, explanation hereby.
Claims (5)
1. contactless straight-line displacement type position transmitter, it is characterized in that an end of main shaft and the axial slope cam of electric operator join, other end link position table is equipped with the measurement cone on the main shaft, cone one side is equipped with integrated displacement transducer, measures cone and links to each other with main shaft.
2. contactless straight-line displacement type position transmitter according to claim 1 is characterized in that main shaft is pressed on the surface cam of topworks by spring.
3. contactless straight-line displacement type position transmitter according to claim 1 is characterized in that being equipped with the adjustment bolt between main shaft and location tables.
4. contactless straight-line displacement type position transmitter according to claim 1 is characterized in that there is the gap between the integrated displacement transducer that cone and one side install.
5. according to claim 1 or 4 described contactless straight-line displacement type position transmitters, it is characterized in that displacement transducer is an eddy current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205785 CN2341117Y (en) | 1998-06-12 | 1998-06-12 | Non-contact linear position transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205785 CN2341117Y (en) | 1998-06-12 | 1998-06-12 | Non-contact linear position transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2341117Y true CN2341117Y (en) | 1999-09-29 |
Family
ID=33962094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98205785 Expired - Fee Related CN2341117Y (en) | 1998-06-12 | 1998-06-12 | Non-contact linear position transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2341117Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776791A (en) * | 2015-04-16 | 2015-07-15 | 广州日滨科技发展有限公司 | Displacement sensor and displacement measuring method |
-
1998
- 1998-06-12 CN CN 98205785 patent/CN2341117Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776791A (en) * | 2015-04-16 | 2015-07-15 | 广州日滨科技发展有限公司 | Displacement sensor and displacement measuring method |
| CN104776791B (en) * | 2015-04-16 | 2018-09-07 | 日立楼宇技术（广州）有限公司 | A kind of method of displacement sensor and measurement displacement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |