CN210142167U - Switching-on and switching-off speed measuring device for vacuum contactor or vacuum circuit breaker - Google Patents
Switching-on and switching-off speed measuring device for vacuum contactor or vacuum circuit breaker Download PDFInfo
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- CN210142167U CN210142167U CN201920501773.6U CN201920501773U CN210142167U CN 210142167 U CN210142167 U CN 210142167U CN 201920501773 U CN201920501773 U CN 201920501773U CN 210142167 U CN210142167 U CN 210142167U
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Abstract
The utility model relates to a divide-shut brake speed measuring device for vacuum contactor or vacuum circuit breaker, including rigidity unable adjustment base, pressure sensor, rigidity guide bar, spring and moving contact transmission body, pressure sensor fixes on rigidity unable adjustment base, rigidity guide bar one end and pressure sensor surface laminating, moving contact transmission body one end has the deep hole, and pressure sensor's other end plug-in is kept away from to the rigidity guide bar in the deep hole of moving contact transmission body, the spring housing is established outside the rigidity guide bar, spring one end and moving contact transmission body fixed connection, and the spring can be along the rigidity guide bar along moving contact transmission body motion realization flexible. The opening and closing speed measuring device for the vacuum contactor or the vacuum circuit breaker is convenient to install, high in response speed, high in measuring precision and strong in pollution resistance.
Description
Technical Field
The utility model relates to a mining power equipment state monitoring technology field especially relates to a vacuum contactor or vacuum circuit breaker that is used for vacuum contactor or vacuum circuit breaker's divide-shut brake speed measuring device and has this divide-shut brake speed measuring device.
Background
In a mining electric power system, a vacuum contactor and a vacuum circuit breaker are widely used electrical equipment, and the on-off speed of the vacuum contactor and the vacuum circuit breaker is mastered to accurately control the on-off time of the vacuum contactor and the vacuum circuit breaker in a split-phase manner, so that the current breaking capacity of the vacuum contactor and the vacuum circuit breaker is played to the greatest extent, and the breaking capacity of the vacuum contactor and the vacuum circuit breaker is directly influenced. Therefore, the method has important significance in accurately measuring, calculating and analyzing the switching-on and switching-off speeds of the vacuum contactor and the vacuum circuit breaker. Generally, a speed measuring device indirectly obtains a displacement characteristic curve of a moving contact of a vacuum contactor or a vacuum circuit breaker by converting mechanical motion of the moving contact of the vacuum contactor or the vacuum circuit breaker into signals which can be directly measured, such as an electric signal, an optical signal, a magnetic signal and the like.
The common speed testing devices for the vacuum contactor and the vacuum circuit breaker mainly comprise the following devices:
1) provided is a potentiometric sensing and measuring device. The device has the advantages of simple structure, high resolution, large volume, difficult installation, abrasion, friction and other defects, and is matched with special instruments, so that the use occasion is limited.
2) Provided is an electromagnetic sensing and measuring device. The mechanical motion is converted into an electrical signal using a magneto-sensitive element. Its advantages are no direct contact, no friction, high sensitivity and high measuring precision. The disadvantage is that the response speed is slow, which is not beneficial to high frequency dynamic measurement.
3) Photoelectric sensing measuring device. The common photoelectric sensor is a grating, has high measurement precision, large range and strong anti-interference capability, but has complex process, is sensitive to working environment, has weak impact resistance and vibration resistance, is easily influenced by oil stains and dust, and cannot be applied to mining equipment working in a dust environment.
4) High-speed camera speed sensor. The device is intuitive and easy to understand, but the operation is complex, an identification processing program related to machine vision needs to be written, and the equipment cost is expensive.
The speed testing devices of the vacuum contactors and the vacuum circuit breakers generally have the defects of difficult sensor fixing and installation, high cost, high use environment requirement and the like, and cannot be applied to mining equipment with limited volume and working in a dust environment.
Patent No. CN102176129A discloses an online speed monitoring device and method for an intelligent vacuum circuit breaker, which, although it is described in general terms that a pressure sensor can be used to monitor the opening and closing speed of the vacuum circuit breaker, no detailed and effective monitoring structure is provided, and it is difficult to implement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a divide-shut brake speed measuring device for vacuum contactor or vacuum circuit breaker, the device be convenient for install, and response speed is fast, and measurement accuracy is high, and antipollution ability is strong.
The utility model discloses a realize through following technical scheme:
a switching-on and switching-off speed measuring device for a vacuum contactor or a vacuum circuit breaker comprises a rigid fixing base, a pressure sensor, a rigid guide rod, a spring and a moving contact transmission body, wherein the pressure sensor is fixed on the rigid fixing base, one end of the rigid guide rod is attached to the surface of the pressure sensor, one end of the moving contact transmission body is provided with a deep hole, the other end, far away from the pressure sensor, of the rigid guide rod is inserted into the deep hole of the moving contact transmission body, the spring is sleeved outside the rigid guide rod, one end of the spring is fixedly connected with the moving contact transmission body, and the spring can stretch along the rigid guide rod along with the movement of the moving contact transmission body.
In order to ensure the effective extension and retraction of the spring, the rigid guide rod comprises a platform part and a rod part which are fixed mutually, the platform part is adhered to the surface of the pressure sensor, and the rod part is inserted into a deep hole of the moving contact transmission body.
In order to facilitate installation, one end of the moving contact transmission body, which is far away from the spring, is provided with a fixing part connected with a vacuum contactor or a vacuum circuit breaker.
The utility model provides a vacuum contactor or vacuum circuit breaker, its moving contact with divide-shut brake speed measuring device's moving contact transmission body fixed connection.
The utility model has the advantages that: this a divide-shut brake speed measuring device for vacuum contactor or vacuum circuit breaker will be difficult to the stroke distance parameter of the vacuum contactor or vacuum circuit breaker moving contact of measuring and turn into the elasticity parameter of the spring or other elastic object that easily detect, use pressure sensor to detect pressure variation, in vacuum contactor or vacuum circuit breaker action, gather pressure sensor's output signal of telecommunication in real time, after numerical analysis, obtain vacuum contactor or vacuum circuit breaker's action time and speed, the installation of being convenient for, response speed is fast, measurement accuracy is high, anti-pollution ability is strong.
Drawings
Fig. 1 is a schematic structural view of the opening and closing speed measuring device for a vacuum contactor or a vacuum circuit breaker according to the present invention in use;
fig. 2 is an exploded view of the opening/closing speed measuring device for a vacuum contactor or a vacuum circuit breaker according to the present invention;
fig. 3 is a schematic circuit diagram of the pressure sensor of the present invention during use.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.
Referring to fig. 1 and 2, the switching speed measuring device for a vacuum contactor or a vacuum circuit breaker of the present invention is a measuring tool for detecting the switching time and speed of a switch in a mining vacuum contactor or a vacuum circuit breaker, and includes a rigid fixing base 1, a pressure sensor 2, a rigid guide rod 3, a spring 4 and a moving contact transmission body 5, wherein the pressure sensor 2 is fixed on the rigid fixing base 1, the left end of the rigid guide rod 3 is adhered to the surface of the pressure sensor 2 and is in contact connection, the left end of the moving contact transmission body 5 has a deep hole 52, the right end of the rigid guide rod 3 is inserted into the deep hole 52 of the moving contact transmission body 5, the spring 4 is sleeved outside the rigid guide rod 3, the right end of the spring 4 is fixedly connected with the left end of the moving contact transmission body 5, and moves along with the moving contact transmission body 5, the spring 4 can be extended and retracted along the rigid guide bar 3.
Further, the rigid guide rod 3 includes a platform portion 31 and a rod portion 32 which are integrated, the platform portion 31 is adhered to the surface of the pressure sensor 2, and the rod portion 32 is inserted into the deep hole 52 of the movable contact transmission body 5.
Further, the movable contact transmission body 5 includes a movable portion 51 connected to the spring 4 and a fixed portion 53 connected to the vacuum contactor or the vacuum circuit breaker 6.
The rigid fixed base 1, the rigid guide rod 3, the spring 4, the moving contact transmission body 5 and the pressure sensor 2 are on the same axis with a moving contact and a static contact of a vacuum contactor or a vacuum circuit breaker 6, when the moving contact of the vacuum contactor or the vacuum circuit breaker moves, the moving contact transmission body is driven to move, and the moving contact of the vacuum contactor or the vacuum circuit breaker and the moving contact transmission body have the same moving speed and moving distance. When the moving contact transmission body moves, the spring is extruded or released, the movement kinetic energy of the moving contact of the vacuum contactor or the vacuum circuit breaker is converted into the elastic potential energy of the spring, and the change condition of the elastic potential energy of the spring is measured through the pressure sensor, so that the movement time and speed of the moving contact of the vacuum contactor or the vacuum circuit breaker are indirectly obtained.
In this embodiment, the pressure sensor is a resistive sensor, as shown in fig. 3, where R1 is a matched resistor, R2 is a pressure sensor, Vin is an input voltage, and Vout is an output voltage.
The detection principle of the method for measuring the opening and closing speed of the vacuum contactor or the vacuum circuit breaker is as follows:
under the condition that the total voltage of R1 and R2 is not changed, when the resistance value of R2 is changed, the value of the output voltage Vout is also changed, and then the value of the output voltage Vout is measured and then is subjected to formula measurement
And calculating to obtain the resistance change of the pressure sensor, and further obtaining the movement time and speed of the movable contact of the vacuum contactor or the vacuum circuit breaker according to the energy conversion relation.
The utility model provides a vacuum contactor or vacuum circuit breaker has the same technical characteristic with above-mentioned divide-shut brake speed measuring device, so also can solve the same technical problem, reach the same technological effect.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The rigid fixing base, the pressure sensor, the rigid guide rod, the spring, and the movable contact transmission body of the present invention may be circular or cylindrical in the drawings, and may have other shapes, and are not limited to the drawings.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "adhered" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. The utility model provides a divide closing speed measuring device for vacuum contactor or vacuum circuit breaker which characterized in that: the pressure sensor is fixed on the rigid fixed base, one end of the rigid guide rod is attached to the surface of the pressure sensor, one end of the moving contact transmission body is provided with a deep hole, the other end, far away from the pressure sensor, of the rigid guide rod is inserted into the deep hole of the moving contact transmission body, the spring is sleeved outside the rigid guide rod, one end of the spring is fixedly connected with the moving contact transmission body, and the spring can stretch along the rigid guide rod along with the movement of the moving contact transmission body.
2. The opening and closing speed measuring device for a vacuum contactor or a vacuum circuit breaker according to claim 1, characterized in that: the rigid guide rod comprises a platform part and a rod part which are fixed mutually, the platform part is adhered to the surface of the pressure sensor, and the rod part is inserted into a deep hole of the moving contact transmission body.
3. The opening and closing speed measuring device for a vacuum contactor or a vacuum circuit breaker according to claim 1, characterized in that: and one end of the moving contact transmission body, which is far away from the spring, is provided with a fixed part connected with the vacuum contactor or the vacuum circuit breaker.
4. The opening/closing speed measuring device for a vacuum contactor or vacuum circuit breaker according to any one of claims 1 to 3, wherein: and a moving contact transmission body of the switching-on and switching-off speed measuring device is fixedly connected with a moving contact of the vacuum contactor or the vacuum circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501773.6U CN210142167U (en) | 2019-04-12 | 2019-04-12 | Switching-on and switching-off speed measuring device for vacuum contactor or vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501773.6U CN210142167U (en) | 2019-04-12 | 2019-04-12 | Switching-on and switching-off speed measuring device for vacuum contactor or vacuum circuit breaker |
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| CN210142167U true CN210142167U (en) | 2020-03-13 |
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| CN201920501773.6U Active CN210142167U (en) | 2019-04-12 | 2019-04-12 | Switching-on and switching-off speed measuring device for vacuum contactor or vacuum circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305414A (en) * | 2020-10-16 | 2021-02-02 | 济南市坤鹏技术开发中心 | Switching-on and switching-off speed measuring device of extra-high voltage vacuum circuit breaker |
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2019
- 2019-04-12 CN CN201920501773.6U patent/CN210142167U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305414A (en) * | 2020-10-16 | 2021-02-02 | 济南市坤鹏技术开发中心 | Switching-on and switching-off speed measuring device of extra-high voltage vacuum circuit breaker |
| CN112305414B (en) * | 2020-10-16 | 2021-09-17 | 亚太人民集团浙江电力设备有限公司 | Switching-on and switching-off speed measuring device of extra-high voltage vacuum circuit breaker |
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