CN203881796U - Rotating speed measuring device - Google Patents
Rotating speed measuring device Download PDFInfo
- Publication number
- CN203881796U CN203881796U CN201420337487.8U CN201420337487U CN203881796U CN 203881796 U CN203881796 U CN 203881796U CN 201420337487 U CN201420337487 U CN 201420337487U CN 203881796 U CN203881796 U CN 203881796U
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- CN
- China
- Prior art keywords
- disc substrate
- measuring device
- rotating speed
- speed measuring
- code
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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 monitoring device of the motor of an oil pumper in an oil field and especially to a rotating speed measuring device. The rotating speed measuring device is composed of N-pole permanent magnets, S-pole permanent magnets, a magnetically-induced probe, a code disc substrate, and a controller. The code disc substrate is in an annular shape and grooves arranged in an annular array are disposed on a side of the code disc substrate. The N-pole permanent magnets and the S-pole permanent magnets are fixed in the grooves of the code disc substrate. The magnetically-induced probe is in circuit connection with the controller. The rotating speed measuring device measures the change of a magnetic field so as to further calculate the rotating speed of the motor and prevent damage, caused by contact measurement, to a measuring device. The monitoring device has no need for measurement environment and is suitable for various environments, high in measurement precision, and long in service life so as to improve the work efficiency of maintainers.
Description
Technical field
The utility model relates to the watch-dog of field, oil field pumping-unit motor, relates in particular to a kind of rotation-speed measuring device.
Background technology
Pumping-unit motor rotating speed is the important indicator of monitoring oil pumper duty, and the method for common measurement pumping-unit motor rotating speed is by shaft coupling, to connect scrambler to measure rotating speed, or measures rotating speed by optical mode.When long-time on-line measurement rotating speed, adopt scrambler to measure rotating speed owing to existing Mechanical Contact to be easy to damage scrambler, the regular device that alternates coding, causes unnecessary economic loss.If adopt optical mode to measure rotating speed, optical element is had relatively high expectations for environment, is not only easily subject to the interference of light, also can be subject to the impact of dust, causes the degree of accuracy of measuring to decline.
Summary of the invention
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of rotation-speed measuring device.
Rotation-speed measuring device of the present utility model; to be formed by N utmost point permanent magnet, S utmost point permanent magnet, magnetic strength probe, code-disc substrate and controller; described code-disc substrate is groove annular, that one side is provided with annular array; N utmost point permanent magnet and S utmost point permanent magnet are fixed in the groove of code-disc substrate; magnetic strength probe in protective sleeve is corresponding with the position of code-disc substrate; magnetic strength probe is connected with the controller circuitry in housing, and protective sleeve and housing join by connecting link.
As further improvement of the utility model, described N utmost point permanent magnet and S utmost point permanent magnet are alternately fixed in the groove of code-disc substrate.
As further improvement of the utility model, described magnetic strength probe is bipolarity Hall magnetic sensitive probe.
Rotation-speed measuring device of the present utility model, by measuring changes of magnetic field, further calculates the rotating speed of motor, has avoided the damage of contact type measurement to measurement mechanism; It is applicable to various environment to measurement environment no requirement (NR), and measuring accuracy is high, long service life, and then has improved maintainer's work efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1; rotation-speed measuring device of the present utility model; to be formed by N utmost point permanent magnet 1, S utmost point permanent magnet 2, magnetic strength probe, code-disc substrate 3 and controller; described code-disc substrate 3 is groove annular, that one side is provided with annular array; N utmost point permanent magnet 1 and S utmost point permanent magnet 2 are fixed in the groove of code-disc substrate 3; magnetic strength probe in protective sleeve 4 is corresponding with the position of code-disc substrate 3, and magnetic strength probe is connected with the controller circuitry in housing 5, and protective sleeve 4 joins by connecting link 6 with housing 5.N utmost point permanent magnet 1 and S utmost point permanent magnet 2 are alternately fixed in the groove of code-disc substrate 3.Described magnetic strength probe is bipolarity Hall magnetic sensitive probe.
During use, code-disc substrate 3 is fixed on the belt pulley of pumping-unit motor, makes magnetic strength alignment probe code-disc substrate 3, open controller, can monitor in real time the rotating speed of pumping-unit motor.This device is applicable to the real-time rotate speed of oil production machine motor, also can measure the rotating speed of other irony parts, and it adopts the changes of magnetic field frequency of bipolarity Hall magnetic sensitive probe scanning rotation code-disc, by measuring this frequency, calculates rotating speed.Its measuring accuracy is determined by permanent magnet arranging density and survey frequency Circuit responce speed.
Claims (3)
1. rotation-speed measuring device; to be formed by N utmost point permanent magnet (1), S utmost point permanent magnet (2), magnetic strength probe, code-disc substrate (3) and controller; it is characterized in that described code-disc substrate (3) is for groove annular, that one side is provided with annular array; N utmost point permanent magnet (1) and S utmost point permanent magnet (2) interval are fixed in the groove of code-disc substrate (3); magnetic strength probe in protective sleeve (4) is corresponding with the position of code-disc substrate (3); magnetic strength probe is connected with the controller circuitry in housing (5), and protective sleeve (4) joins by connecting link (6) with housing (5).
2. rotation-speed measuring device as claimed in claim 1, is characterized in that N utmost point permanent magnet (1) and S utmost point permanent magnet (2) are alternately fixed in the groove of code-disc substrate (3).
3. rotation-speed measuring device as claimed in claim 1, is characterized in that described magnetic strength probe is bipolarity Hall magnetic sensitive probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420337487.8U CN203881796U (en) | 2014-06-24 | 2014-06-24 | Rotating speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420337487.8U CN203881796U (en) | 2014-06-24 | 2014-06-24 | Rotating speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881796U true CN203881796U (en) | 2014-10-15 |
Family
ID=51682282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420337487.8U Expired - Fee Related CN203881796U (en) | 2014-06-24 | 2014-06-24 | Rotating speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203881796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707026A (en) * | 2019-01-14 | 2019-05-03 | 重庆工程职业技术学院 | Computer based energy-saving drainage system |
| CN109723806A (en) * | 2019-01-16 | 2019-05-07 | 重庆工程职业技术学院 | Engineering machinery deceleration device |
-
2014
- 2014-06-24 CN CN201420337487.8U patent/CN203881796U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707026A (en) * | 2019-01-14 | 2019-05-03 | 重庆工程职业技术学院 | Computer based energy-saving drainage system |
| CN109723806A (en) * | 2019-01-16 | 2019-05-07 | 重庆工程职业技术学院 | Engineering machinery deceleration device |
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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: 20141015 Termination date: 20190624 |