CN203443968U - Revolution speed transducer of increased-safety brushless excitation synchronous motor - Google Patents
Revolution speed transducer of increased-safety brushless excitation synchronous motor Download PDFInfo
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- CN203443968U CN203443968U CN201320587501.5U CN201320587501U CN203443968U CN 203443968 U CN203443968 U CN 203443968U CN 201320587501 U CN201320587501 U CN 201320587501U CN 203443968 U CN203443968 U CN 203443968U
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- metal shell
- brushless excitation
- speed probe
- coil
- described metal
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Abstract
Disclosed in the utility model is a revolution speed transducer of an increased-safety brushless excitation synchronous motor. The revolution speed transducer comprises a metal housing and a coil. The metal housing has a cylindrical structure; and one end of the metal housing is open and the other end is communicated with the external world by a circular hole. The coil is arranged inside the metal housing; and the two ends of the coil are welded to a cable and pass through the circular hole. Besides, the space inside the metal housing is filled with an epoxy resin material; and the coil is fixed inside the metal housing by the epoxy resin material. The provided revolution speed transducer is suitable for speed measurement of increased-safety brushless excitation synchronous motors with the intermediate and low revolution speeds. The transducer with the simple structure can be installed conveniently and has the explosion-proof function; and thus the transducer can be applied to a factory explosion environment.
Description
Technical field
The utility model relates to a kind of speed probe, relates in particular to a kind of speed probe that is applied to enhanced brushless excitation synchronization motor, is applicable to the testing the speed of the type synchronous motor of middle and slow speed of revolution.
Background technology
At present, motor can be divided into two kinds, and a kind of is synchronous motor, and another kind is asynchronous motor.Synchronous motor divides again brushless excitation and has brush excitation, and brushless excitation has been cancelled having in brush excitation and easily produced carbon brush and the slip ring structure of arcing, electric spark, makes it can be in the special occasions use that has explosion-proof, dustproof, anticorrosion etc. to require.But no matter be the synchronous motor of which kind of form, all need under rated speed, move, reason due to physical construction, generally synchronous motor is not allow to move under the state of " step-out ", once step-out, will make the inner heat of motor too high, when situation is serious, can directly damage motor.Especially the enhanced brushless excitation synchronization motor moving under factory's explosion environment, belongs to the motor of explosion-proof type, if out-of-step operation, not only can damage motor and also can have larger potential safety hazard.And large-scale synchronous motor, is more necessary the measurement of its rotating speed.
Utility model content
The utility model has been designed and developed a kind of speed probe that is applied to test the enhanced brushless excitation synchronization motor of middle and slow speed of revolution, and it is simple in structure, easy for installation, and the effect that tests the speed is good, the most important thing is to possess good explosion-proof performance.
The technical scheme that the utility model provides is:
A speed probe for enhanced brushless excitation synchronization motor, comprising:
A metal shell, it is column structure, and one end of described metal shell is unlimited, and the other end is communicated with outside by a circular hole;
A coil, it is positioned at the inside of described metal shell, and the two ends of described coil are welded on a cable and by described cable and pass from described circular hole;
Wherein, in described metal shell, be filled with epoxide resin material, it is inner that described coil is fixed on described metal shell by described epoxide resin material.
Preferably, described metal shell is cylindric, and on outer wall, at least a portion offers helicitic texture.
Preferably, described speed probe also comprises two fixtures, and described fixture is circular, and is threaded on the helicitic texture of described metal shell outer wall, and can do traveling priority along described helicitic texture.
Preferably, in the periphery of described fixture, evenly offer four grooves, the rectangular shape of described groove.
Preferably, in an other part for described metal shell outer wall, offer three mounting holes, and described three mounting holes are evenly distributed on the same circumference of described metal shell outer wall.
Preferably, described coil is with cored coil, and one end of described iron core exceeds described metal shell 0.1-0.3 centimetre, and is coated with one deck epoxide resin material.
Preferably, described metal shell adopts aluminium or copper product to make.
Preferably, described betal can adopts magnesium content weight ratio to be no more than 0.5% aluminum to make.
Preferably, described epoxide resin material adopts the epoxy resin of heat-conducting type.
The advantage of the speed probe maximum that the utility model provides is to can be applicable in the enhanced brushless excitation synchronization motor moving under factory's explosion environment, the motor of INCREASEDSAFETY is the motor that belongs to explosion-proof type, so the speed probe that the utility model provides possesses explosion-proof performance, and meet requirement of explosion proof, be embodied in:
One, coil is watered and is enclosed in a metal shell inside by epoxy resin, coil is maintained static, therefore in motor rotary course, can not make coil wave and serviceable life of having reduced sensor;
It is isolated that two, the use of epoxy resin also makes the gas (may include inflammable gas) under coil and factory's explosion environment, when coil produces induction current, can not produce electric spark with the external world, strengthened explosion-proof performance;
Meanwhile, the speed probe that the utility model provides is provided with two fixtures, and three mounting holes, can be fixed very easily and be arranged on motor; Further, epoxy resin adopts the epoxy resin of heat-conducting type, adds the good thermal diffusivity of aluminum or copper product, and the heat energy that coil is sent when normal use well sheds, and has improved the serviceable life of speed probe.
Accompanying drawing explanation
Fig. 1 is the structural representation of speed probe described in the utility model.
Fig. 2 is the vertical view of speed probe described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, to make those skilled in the art can implement according to this with reference to instructions word.
As shown in Figure 1, the utility model provides a kind of speed probe of enhanced brushless excitation synchronization motor, comprising: a metal shell 4, it is column structure, and one end of described metal shell is unlimited, and the other end is communicated with outside by a circular hole; A coil, it is positioned at the inside of described metal shell, and the two ends of described coil are welded on a cable 7 inside and pass from described circular hole;
Wherein, be filled with epoxide resin material 3 in described metal shell, it is inner that described coil is fixed on described metal shell by described epoxide resin material.
In the utility model, the housing that metal shell preferentially adopts aluminum to make, or copper product; Described epoxide resin material preferentially adopts the epoxy resin of heat-conducting type.When speed probe is in normal operation, coil can produce induction current, can thermal value, utilization has the cooperation of the epoxy resin of thermal conductivity and the aluminium of perfect heat-dissipating or copper product, the heat that can make coil send well sheds, and in using for a long time, this effect can be obvious.
From Fig. 1 and Fig. 2, can see, metal shell described in the utility model is cylindric, and on outer wall, at least a portion is provided with helicitic texture 6.The about 0.4-0.7 centimetre of metal shell wall thickness.Described speed probe also comprises two fixtures 5, and described fixture is circular, and is threaded on the helicitic texture of described metal shell outer wall, and can do traveling priority along described helicitic texture.
In the periphery of described fixture, evenly offer four grooves 501, the rectangular shape of described groove, the angle of four grooves is 90 degree, as shown in Figure 2.
The speed probe that the utility model provides when mounted, relies on the straight line of two fixtures on metal shell outer wall to rotate to clamp corresponding fixed mount on the gland bonnet of rotating rectifier.Wherein in periphery, offering groove is in order to facilitate staff to rotate fixture.
Preferably, in an other part for described metal shell outer wall, offer three mounting holes 2, and described three mounting holes are evenly distributed on the same circumference of described metal shell outer wall.These three mounting holes offer the installation that helps speed probe.
Further, the coil that the present invention adopts is with cored coil, and one end of described iron core 1 exceeds described metal shell 0.1-0.3 centimetre, and is coated with one deck epoxide resin material.Iron is the good conductor of magnetic, has well poly-magnetic effect.
Preferably, described betal can adopts magnesium content weight ratio to be no more than 0.5% aluminum to make.
The survey rotating speed principle of the speed probe that the utility model provides is:
First on the outer of the rotation disk body of the rotating rectifier of enhanced brushless excitation synchronization motor, a permanent magnet is installed, permanent magnet is that a kind of electric current that do not need just can produce the magnet in magnetic field;
Rotating rectifier covers by a gland bonnet, sealing lid is static with respect to ground, on the cover rim of the gland bonnet of then aiming on the external edge of rotating disc of rotating rectifier, the speed probe that the utility model provides is installed, its iron core end is aimed at the outer of rotation disk body; The rotor coaxial of rotating rectifier and motor wherein, and while rotating along with the rotor of motor, rotation disk body also synchronously rotates, and the permanent magnet on it is also rotated thereupon; Whenever permanent magnet near or during away from speed probe iron core, the coil of sensor internal will be responded to once, and produces alternation induction electromotive force, the AC wave shape of output pulsatile once.This AC wave shape outputs to rear level system by cable again, carries out the processing such as filtering, just can measure the rotating speed of current motor.Meanwhile, the utility model can regulate the distance between its sensor iron core and permanent magnet by two fixtures, obtains the induction electromotive force of different demands.
The rotating speed of motor rotor is faster, and the frequency of impulse hits output is just higher, and the frequency of output is proportional to rotating speed, and measure frequency and just measured rotating speed, can be also voltage signal or current signal by frequency translation.
It should be noted that, the speed probe that the utility model provides does not pass to DC current signal in coil at the beginning, its inside only produces the induction current of alternation, and the rotation (being the rotation of motor rotor) that comes from rotating rectifier has completely produced at it magnetic field changing around.
Speed probe working current, voltage that the utility model provides:
Cell winding induction is output as cyclic pulse signal, and its parameter is as follows:
Crest voltage: 5V～20V
Peak point current: 0.5mA～2mA
Output short-circuit peak point current <20mA
Maximum diffipation power <50mW
Although embodiment of the present utility model is open as above, but it is not restricted to listed utilization in instructions and embodiment, it can be applied to the various fields of the present utility model that are applicable to completely, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend of describing.
Claims (9)
1. a speed probe for enhanced brushless excitation synchronization motor, is characterized in that, comprising:
A metal shell, it is column structure, and one end of described metal shell is unlimited, and the other end is communicated with outside by a circular hole;
A coil, it is positioned at the inside of described metal shell, and the two ends of described coil are welded on a cable and by described cable and pass from described circular hole;
Wherein, in described metal shell, be filled with epoxide resin material, it is inner that described coil is fixed on described metal shell by described epoxide resin material.
2. the speed probe of enhanced brushless excitation synchronization motor as claimed in claim 1, is characterized in that, described metal shell is cylindric, and on outer wall, at least a portion offers helicitic texture.
3. the speed probe of enhanced brushless excitation synchronization motor as claimed in claim 2, it is characterized in that, also comprise two fixtures, described fixture is circular, and be threaded on the helicitic texture of described metal shell outer wall, and can do traveling priority along described helicitic texture.
4. the speed probe of enhanced brushless excitation synchronization motor as claimed in claim 3, is characterized in that, evenly offers four grooves in the periphery of described fixture, the rectangular shape of described groove.
5. the speed probe of enhanced brushless excitation synchronization motor as claimed in claim 2, it is characterized in that, in an other part for described metal shell outer wall, offer three mounting holes, and described three mounting holes are evenly distributed on the same circumference of described metal shell outer wall.
6. the speed probe of enhanced brushless excitation synchronization motor as claimed in claim 1, it is characterized in that, described coil is with cored coil, and one end of described iron core exceeds described metal shell 0.1-0.3 centimetre, and is coated with one deck epoxide resin material.
7. the speed probe of the enhanced brushless excitation synchronization motor as described in claim 1-6 any one, is characterized in that, described metal shell adopts aluminium or copper product to make.
8. the speed probe of enhanced brushless excitation synchronization motor as claimed in claim 7, is characterized in that, described betal can adopts magnesium content weight ratio to be no more than 0.5% aluminum and makes.
9. the speed probe of enhanced brushless excitation synchronization motor as claimed in claim 1, is characterized in that, described epoxide resin material adopts the epoxy resin of heat-conducting type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587501.5U CN203443968U (en) | 2013-09-23 | 2013-09-23 | Revolution speed transducer of increased-safety brushless excitation synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587501.5U CN203443968U (en) | 2013-09-23 | 2013-09-23 | Revolution speed transducer of increased-safety brushless excitation synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443968U true CN203443968U (en) | 2014-02-19 |
Family
ID=50095005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320587501.5U Expired - Lifetime CN203443968U (en) | 2013-09-23 | 2013-09-23 | Revolution speed transducer of increased-safety brushless excitation synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443968U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044379A (en) * | 2015-08-28 | 2015-11-11 | 宁波南车时代传感技术有限公司 | Housing of multichannel speed sensor mounted at locomotive axle end |
| CN107238728A (en) * | 2017-05-25 | 2017-10-10 | 深圳市深双保电器有限公司 | The adjustable magnetoelectric induction velocity sensor of peak value |
-
2013
- 2013-09-23 CN CN201320587501.5U patent/CN203443968U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044379A (en) * | 2015-08-28 | 2015-11-11 | 宁波南车时代传感技术有限公司 | Housing of multichannel speed sensor mounted at locomotive axle end |
| CN105044379B (en) * | 2015-08-28 | 2018-11-02 | 宁波中车时代传感技术有限公司 | Multichannel locomotive shaft-end speed probe shell |
| CN107238728A (en) * | 2017-05-25 | 2017-10-10 | 深圳市深双保电器有限公司 | The adjustable magnetoelectric induction velocity sensor of peak value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |