CN113884291A - Isolating switch mechanical life testing device - Google Patents
Isolating switch mechanical life testing device Download PDFInfo
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- CN113884291A CN113884291A CN202111155671.1A CN202111155671A CN113884291A CN 113884291 A CN113884291 A CN 113884291A CN 202111155671 A CN202111155671 A CN 202111155671A CN 113884291 A CN113884291 A CN 113884291A
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- contact finger
- contact
- isolating switch
- switch
- swing mechanism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to the technical field of isolating switches, and discloses a mechanical life testing device for an isolating switch, which comprises a rack, a contact finger swinging mechanism, a photoelectric switch and a control system, wherein the contact finger swinging mechanism is installed on the rack, the photoelectric switch is arranged on the rack, the photoelectric switch is used for being in control connection with the control system so as to count the opening and closing times of the contact finger swinging mechanism, and the control system is in control connection with the contact finger swinging mechanism. The mechanical service life testing device of the isolating switch can automatically control the isolating switch to be switched on and off and count.
Description
Technical Field
The invention relates to the technical field of isolating switches, in particular to a mechanical life testing device for an isolating switch.
Background
In the field operation process of a power grid, the high-voltage isolating switch plays a role in conducting current, the dynamic and static electric contact parts (contacts and contact fingers) of the high-voltage isolating switch are core components, generally are red copper matrixes, and the conductivity of the high-voltage isolating switch is improved by silver plating on the surfaces of the matrixes.
In recent years, the heating of the contact surface of the moving contact and the fixed contact of the isolating switch becomes a key problem influencing the safe operation of a power grid, and most of the heating defects are that a silver coating on the surface of the contact is oxidized, abraded and even stripped to expose copper due to a large amount of opening and closing mechanical operations, so that the contact resistance on the surface of the silver contact is increased, and a large amount of heat is generated under the action of large current to cause the generation of thermal defects.
However, at present, no special isolating switch mechanical life test device exists, and is particularly used for measuring the switching-on times of wearing or peeling of a silver coating, the existing test device directly adopts an actual isolating switch, the switching-on and switching-off operations are realized by climbing a rack and manually operating once and again, the switching-on and switching-off operation times need to be counted manually, the switching-on and switching-off interval time of each time is also manually controlled, the mechanical life of the isolating switch needs to be obtained, the operation which is not stopped by a specially-assigned person is needed, the service life is generally required for thousands of times, the operation can be carried out for several weeks without interruption, and the test device is very inconvenient and is easy to remember the times of wrong operation.
Disclosure of Invention
The purpose of the invention is: the isolating switch mechanical life testing device is designed, and can automatically control the isolating switch to be switched on and off and count.
In order to achieve the purpose, the invention provides a device for testing the mechanical life of an isolating switch, which comprises a rack, a contact finger swing mechanism, a photoelectric switch and a control system, wherein the contact finger swing mechanism is installed on the rack, the photoelectric switch is arranged on the rack, the photoelectric switch is used for being in control connection with the control system so as to count the opening and closing times of the contact finger swing mechanism, and the control system is in control connection with the contact finger swing mechanism.
Preferably, the contact finger swinging mechanism comprises at least one first driving assembly and a rocker, one end of the rocker is in transmission connection with the first driving assembly and is installed on one side of the rack, the other end of the rocker is used for being connected with a contact finger of the isolating switch, the other side of the rack is used for being connected with a contact of the isolating switch, and the first driving assembly is in control connection with the control system.
Preferably, the contact finger swing mechanism comprises two first driving assemblies and rocking bars, the two first driving assemblies and the rocking bars are respectively installed on two sides of the rack, one ends of the two rocking bars are respectively in transmission connection with the two first driving assemblies, the other end of one rocking bar is used for being connected with a contact finger of the isolating switch, and the other end of the other rocking bar is used for being connected with a contact of the isolating switch.
Preferably, the first driving assembly comprises a driving motor and a link mechanism, and the driving motor is in transmission connection with the rocker through the link mechanism.
As a preferred scheme, the device further comprises a contact finger plugging mechanism, the contact finger plugging mechanism is installed on the rack, and the contact finger plugging mechanism is in control connection with the control system.
Preferably, the contact finger inserting mechanism comprises a telescopic driving mechanism, one end of the telescopic driving mechanism is installed on one side of the rack, and the other end of the telescopic driving mechanism is used for being connected with a contact finger of the isolating switch so as to drive the contact finger of the isolating switch to move in a telescopic mode and be fixedly installed on the contact of the isolating switch on the other side of the rack to be switched on and off.
Preferably, the telescopic driving mechanism comprises a telescopic rod and a second driving assembly, the second driving assembly is mounted on the rack and used for driving the telescopic rod to stretch, the telescopic rod is connected with the contact finger of the isolating switch, and the second driving assembly is in control connection with the control system.
Preferably, the control system includes:
a controller;
the counting module is used for counting the switching-on and switching-off times of a contact and a contact finger of the isolating switch;
the timing module is used for counting the switching-on or switching-off time of a contact and a contact finger of the isolating switch;
the display module is used for displaying the switching-on and switching-off times of the contact and the contact finger of the isolating switch;
the storage module is used for storing the times of opening and closing of the contact and the contact finger of the isolating switch; and
the position detection module is used for detecting the position of the contact finger swing mechanism during opening;
the counting module, the timing module, the display module and the storage module are in control connection with the controller.
Preferably, the counting module comprises a pulse shaper and a decoder, and the pulse shaper and the decoder are used for processing the pulse signal of the photoelectric switch.
Preferably, the control method of the control system includes:
s1, controlling the contact finger swing mechanism to switch on;
s2, acquiring a pulse signal of the photoelectric switch;
s3, triggering the counting module to count, comparing with a set value, outputting a counting result to a display module, and storing the counting result in a storage module;
s4, triggering a timing module to time, and controlling the contact finger swing mechanism to open when the first set time is reached;
s5, acquiring the position of the contact finger swing mechanism, triggering the timing module to time when the contact finger swing mechanism reaches the brake-separating in-place position, and controlling the contact finger swing mechanism to switch on when the contact finger swing mechanism reaches a second set time;
in step S3, when the counting result is equal to the set value, the contact finger swing mechanism is controlled to stop operating.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
according to the mechanical service life testing device for the isolating switch, the control system controls the contact finger swing mechanism to be switched on and off, and obtains the pulse signals of the photoelectric switch to count, the structure is simple, manual operation is not needed, the labor intensity is reduced, automatic counting is achieved, testing errors are reduced, and the reliability of testing results is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
In the figure:
1. a frame; 2. a rocker; 3. a contact finger; 4. a contact; 5. a telescopic rod.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", and the like, which are used in the present invention, are used for indicating the orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The terms "first" and "second" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used in a broad sense, and for example, the terms "connected," "connected," and "fixed" may be fixed, detachable, or integrated; the connection can be mechanical connection or welding connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the device for testing mechanical life of an isolation switch according to the preferred embodiment of the present invention includes a rack 1, a contact finger swing mechanism, a photoelectric switch and a control system, wherein the contact finger swing mechanism is installed in the rack 1, the photoelectric switch is used for being in control connection with the control system to count the number of times of opening and closing the contact finger swing mechanism, and the control system is in control connection with the contact finger swing mechanism.
According to the mechanical service life testing device for the isolating switch, the control system controls the contact finger swing mechanism to be switched on and off, and obtains the pulse signals of the photoelectric switch to count, so that the mechanical service life testing device is simple in structure, free of manual operation, capable of reducing labor intensity, capable of automatically counting, reducing testing errors and capable of improving reliability of testing results.
Furthermore, the contact finger swing mechanism comprises at least one first driving assembly and a rocker 2, one end of the rocker 2 is in transmission connection with the first driving assembly and is installed on one side of the rack 1, the other end of the rocker 2 is used for being connected with a contact finger 3 of the isolating switch, the other side of the rack 1 is used for being connected with a contact 4 of the isolating switch, and the first driving assembly is in control connection with the control system. The control system controls the first driving assembly to drive the rocker 2 to swing, so that the contact finger 3 and the contact 4 of the isolating switch are switched off or switched on, the contact finger 3 and the contact 4 of the isolating switch are automatically controlled to be switched on and off, the photoelectric switch is used for detecting, and when the contact finger 3 and the contact 4 are switched on, a pulse signal is transmitted to the control system, so that counting is carried out. In addition, the isolating switch is in three-phase linkage, each phase can be independently operated through the contact finger swinging mechanism, adjustment is not needed, and the stress of three-phase testing is uniform.
Specifically, as shown in fig. 1, the contact finger swinging mechanism includes two first driving assemblies and rockers 2, the two first driving assemblies and the rockers 2 are respectively installed on two sides of the frame 1, one ends of the two rockers 2 are respectively in transmission connection with the two first driving assemblies, the other end of one rocker 2 is used for being connected with a contact finger 3 of the disconnecting switch, and the other end of the other rocker 2 is used for being connected with a contact 4 of the disconnecting switch. Two first driving assemblies are simultaneously controlled by a control system to drive two rockers 2 to swing, so that a contact finger 3 and a contact finger 4 of the isolating switch are switched off or switched on, the contact finger 4 and the contact finger 3 swing simultaneously, switching-off and switching-on actions of the actual horizontal rotary isolating switch can be simulated, more real experimental data are obtained, adjustment is facilitated, switching-on actions of the contact finger 4 and the contact finger 3 are smoother, abrasion is smaller, and errors caused by external factors are reduced.
Furthermore, the first driving assembly comprises a driving motor and a link mechanism, and the driving motor is in transmission connection with the rocker 2 through the link mechanism. The rocker 2 swings by driving the link mechanism through the driving motor, and the link mechanism has smaller pressure intensity, so that larger load can be borne; the lubricating is facilitated, and the abrasion is small; in addition, the geometrical shape is simple, the processing and the manufacturing are convenient, and the complexity and the cost of the structure can be reduced.
Furthermore, the device also comprises a contact finger plugging mechanism, wherein the contact finger plugging mechanism is arranged on the rack and is in control connection with the control system. The contact finger inserting mechanism is suitable for the contact finger test of the inserting type plum blossom contact, so that the device is suitable for the contact finger test of the disconnecting switches of various models, and the utilization rate of the device is improved.
Further, as shown in fig. 1, the contact finger plugging mechanism includes a telescopic driving mechanism, one end of the telescopic driving mechanism is installed at one side of the rack, and the other end of the telescopic driving mechanism is used for being connected with a contact finger 3 of the disconnecting switch to drive the contact finger 3 of the disconnecting switch to move telescopically and be connected with a contact 4 of the disconnecting switch fixedly installed at the other side of the rack. Specifically, flexible actuating mechanism includes telescopic link 5 and second drive assembly, and second drive assembly installs in frame 1 and is used for driving telescopic link 5 flexible, and telescopic link 5 is connected with isolator's touching and indicates 3, and second drive assembly and control system control are connected. The control system controls the second driving mechanism to drive the telescopic rod 5 to perform telescopic motion, so that the contact finger 3 is inserted into or separated from the contact 4 to realize switching on or switching off, and signals are transmitted to the control system through the photoelectric switch to count, and the device is simple in structure and convenient to operate.
Further, the control system includes:
a controller;
the counting module is used for counting the switching-on and switching-off times of the contact 4 and the contact finger 3 of the isolating switch;
the timing module is used for counting the switching-on or switching-off time of the contact 4 and the contact finger 3 of the isolating switch;
the display module is used for displaying the switching-on and switching-off times of the contact 4 and the contact finger 3 of the isolating switch;
the storage module is used for storing the switching-on and switching-off times of the contact 4 and the contact finger 3 of the isolating switch; and the number of the first and second groups,
the position detection module is used for detecting the position of the contact finger swing mechanism during opening;
the counting module, the timing module, the display module and the storage module are in control connection with the controller.
Furthermore, the counting module comprises a pulse shaper and a decoder, and the pulse shaper and the decoder are used for processing the pulse signal of the photoelectric switch. The pulse shaper can eliminate the interference of the pulse signal of the photoelectric switch, and the decoder can compile the pulse signal and display the signal through the display module.
Further, the control method of the control system comprises the following steps:
s1, controlling the contact finger swing mechanism to switch on;
s2, acquiring a pulse signal of the photoelectric switch;
s3, triggering the counting module to count, comparing with a set value, outputting a counting result to a display module, and storing the counting result in a storage module;
s4, triggering a timing module to time, and controlling the contact finger swing mechanism to open when the first set time is reached;
s5, acquiring the position of the contact finger swing mechanism, triggering the timing module to time when the contact finger swing mechanism reaches the brake-separating in-place position, and controlling the contact finger swing mechanism to switch on when the contact finger swing mechanism reaches a second set time;
in step S3, when the counting result is equal to the set value, the contact finger swing mechanism is controlled to stop operating.
The action of the whole device is controlled through the control system, automatic counting is achieved, manual operation is not needed, automation is achieved, reliability of a test result can be improved, delay action is achieved through the timing module in the switching-on and switching-off process, the situation that the action is too fast, the contact 4 and the contact finger 3 are abraded, and test accuracy is affected can be prevented.
In summary, the embodiment of the invention provides a device for testing the mechanical life of an isolating switch, which controls the switching-on and switching-off of a contact finger swing mechanism through a control system, and acquires a pulse signal of a photoelectric switch to count, and has the advantages of simple structure, no need of manual operation, reduced labor intensity, automatic counting, reduced test error, and improved reliability of test results, and each phase of the isolating switch can be independently tested. In addition, the device also comprises a contact finger plugging mechanism, so that the device is suitable for the contact finger test of the disconnecting switches of various models, and the utilization rate of the device is improved.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an isolator mechanical life testing arrangement, its characterized in that, touches and indicates swing mechanism, photoelectric switch and control system including frame, contact, the contact touch indicate swing mechanism install in the frame, photoelectric switch locates the frame, photoelectric switch be used for with control system control connection is in order to count the contact touches the deciliter number of times that indicates swing mechanism, control system with the contact touches and indicates swing mechanism control connection.
2. The mechanical life testing device for the disconnecting switch according to claim 1, wherein the contact finger swing mechanism comprises at least one first driving assembly and a rocker, one end of the rocker is in transmission connection with the first driving assembly and is mounted on one side of the rack, the other end of the rocker is used for being connected with a contact finger of the disconnecting switch, the other side of the rack is used for being connected with a contact of the disconnecting switch, and the first driving assembly is in control connection with the control system.
3. The mechanical life testing device for the disconnecting switch according to claim 2, wherein the contact finger swing mechanism comprises two first driving assemblies and rockers, the two first driving assemblies and the rockers are respectively mounted on two sides of the rack, one ends of the two rockers are respectively in transmission connection with the two first driving assemblies, the other end of one rocker is used for being connected with the contact finger of the disconnecting switch, and the other end of the other rocker is used for being connected with the contact of the disconnecting switch.
4. The mechanical life testing device for the isolating switch as claimed in claim 2 or 3, wherein the first driving assembly comprises a driving motor and a link mechanism, and the driving motor is in transmission connection with the rocker through the link mechanism.
5. The mechanical life testing device for the isolating switch as claimed in claim 1, further comprising a contact finger plugging mechanism, wherein the contact finger plugging mechanism is mounted on the rack and is in control connection with the control system.
6. The mechanical life testing device for the isolating switch as claimed in claim 5, wherein the contact finger inserting mechanism comprises a telescopic driving mechanism, one end of the telescopic driving mechanism is mounted on one side of the rack, and the other end of the telescopic driving mechanism is used for being connected with a contact finger of the isolating switch so as to drive the contact finger of the isolating switch to move telescopically and be connected with a contact of the isolating switch fixedly mounted on the other side of the rack.
7. The mechanical life testing device for the isolating switch as claimed in claim 6, wherein the telescopic driving mechanism comprises a telescopic rod and a second driving assembly, the second driving assembly is mounted on the rack and used for driving the telescopic rod to stretch and retract, the telescopic rod is connected with the contact finger of the isolating switch, and the second driving assembly is in control connection with the control system.
8. The mechanical life testing device of the isolating switch according to claim 1, wherein the control system comprises:
a controller;
the counting module is used for counting the switching-on and switching-off times of a contact and a contact finger of the isolating switch;
the timing module is used for counting the switching-on or switching-off time of a contact and a contact finger of the isolating switch;
the display module is used for displaying the switching-on and switching-off times of the contact and the contact finger of the isolating switch;
the storage module is used for storing the times of opening and closing of the contact and the contact finger of the isolating switch; and
the position detection module is used for detecting the position of the contact finger swing mechanism during opening;
the counting module, the timing module, the display module and the storage module are in control connection with the controller.
9. The mechanical life testing device for the isolating switch according to claim 8, characterized in that: the counting module comprises a pulse shaper and a decoder, and the pulse shaper and the decoder are used for processing pulse signals of the photoelectric switch.
10. The mechanical life testing device for the isolating switch according to claim 8, wherein the control method of the control system comprises the following steps:
s1, controlling the contact finger swing mechanism to switch on;
s2, acquiring a pulse signal of the photoelectric switch;
s3, triggering the counting module to count, comparing with a set value, outputting a counting result to a display module, and storing the counting result in a storage module;
s4, triggering a timing module to time, and controlling the contact finger swing mechanism to open when the first set time is reached;
s5, acquiring the position of the contact finger swing mechanism, triggering the timing module to time when the contact finger swing mechanism reaches the brake-separating in-place position, and controlling the contact finger swing mechanism to switch on when the contact finger swing mechanism reaches a second set time;
in step S3, when the counting result is equal to the set value, the contact finger swing mechanism is controlled to stop operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155671.1A CN113884291A (en) | 2021-09-29 | 2021-09-29 | Isolating switch mechanical life testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155671.1A CN113884291A (en) | 2021-09-29 | 2021-09-29 | Isolating switch mechanical life testing device |
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| CN113884291A true CN113884291A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111155671.1A Pending CN113884291A (en) | 2021-09-29 | 2021-09-29 | Isolating switch mechanical life testing device |
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| CN (1) | CN113884291A (en) |
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| CN209087684U (en) * | 2018-12-25 | 2019-07-09 | 瑞熙恩电气（珠海）有限公司 | Ring network cabinet and its isolator operation device |
| CN212722001U (en) * | 2020-07-14 | 2021-03-16 | 西安庆安电气控制有限责任公司 | Rotary switch life test device |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203572648U (en) * | 2013-08-26 | 2014-04-30 | 山东泰开隔离开关有限公司 | Automatic testing device for mechanical lifetime of silvering layer of double-column horizontal rotary type outdoor disconnecting switch |
| CN203587766U (en) * | 2013-11-28 | 2014-05-07 | 江苏省如高高压电器有限公司 | Auxiliary switch service life testing device |
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