CN210294506U - Secondary open circuit switching device and error verification platform with same - Google Patents
Secondary open circuit switching device and error verification platform with same Download PDFInfo
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- CN210294506U CN210294506U CN201921156322.XU CN201921156322U CN210294506U CN 210294506 U CN210294506 U CN 210294506U CN 201921156322 U CN201921156322 U CN 201921156322U CN 210294506 U CN210294506 U CN 210294506U
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Abstract
The utility model discloses a switching device opens a way to secondary, include: the insulation assembly and the secondary connection assembly are arranged on the workbench, the secondary connection assembly is movably provided with a first connection end, the insulation assembly is fixedly provided with a second connection end, and the first connection end and the second connection end can be attached and disconnected. Because the secondary switching device that opens a way is arranged in the circuit experiment, so can set up secondary coupling assembling and insulating assembly on the workstation, through connecting the circuit respectively at first link and second link respectively, and control the contact and the disconnection of first link and second link, can realize the intercommunication and the disconnection of circuit, utilize the secondary switching device that opens a way to replace vacuum relay to carry out circuit control, there is not the ageing of electron device, phenomenon such as coil impedance increase, thereby the accuracy of measuring result has been promoted, and to later maintenance, it is comparatively convenient to inspect the fault change. The utility model also discloses an error verification platform.
Description
Technical Field
The utility model relates to a circuit control technical field, more specifically say, relate to a switching device is opened a way to secondary. Furthermore, the utility model discloses still relate to an error examination platform including above-mentioned secondary auto-change over device that opens a way.
Background
Over the years, power companies in various grids, provinces and cities invest a large amount of funds to build electric energy metering centers, and the domestic current transformer calibrating device realizes automatic wiring and automatic calibration, so that manual errors caused by manual wiring and disconnection are avoided, and the calibration efficiency is improved.
The basic error measurement is carried out after the first and second terminal crimping line contacts of the transformer can be contacted closely, and the ascending and descending of primary current and the gear of a standard current transformer and a load box and the range of a calibrator are automatically controlled in a program control mode; switching the mutual inductor calibrator to a self-calibration loop through a control terminal for error self-detection, switching a secondary current loop to a secondary load measurement mode, and automatically storing a test result; at present, a widely popularized method is to adopt a 12-path vacuum relay, control the state of the vacuum relay through a DSP (digital signal processor), realize the switching between a secondary winding turn-to-turn insulation test and an error test of the mutual inductor, and meanwhile, the vacuum relay also bears 150% of the rated current of the mutual inductor for completing the measurement of the magnetic saturation margin.
And the error detection station respectively completes the turn-to-turn insulation test and the error test of the secondary winding of the transformer by controlling the switching of the vacuum relay, and simultaneously controls the vacuum relay to switch different current grade ranges and measure the magnetic saturation margin error of the transformer.
When the mutual inductor is opened for the second time, rated and expanded primary current is conducted on the primary side for 1 minute, at the moment, very high induction voltage can be generated at the secondary winding end, the maximum voltage can reach 4.5kV, potential safety hazards are generated, meanwhile, the vacuum relay completes the magnetic saturation margin error test through 1.5 times of the rated current of the mutual inductor, the contact is aged due to long-time overcurrent of the vacuum relay, the coil impedance is increased, the load characteristic is increased, and the accuracy of the measurement result is influenced to a certain degree.
In summary, how to improve the accuracy of the measurement result is a problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a secondary open circuit switching device, which can improve the accuracy of the measurement result by controlling the switch of the circuit.
Another object of the present invention is to provide an error calibration platform comprising the above secondary open circuit switching device.
In order to achieve the above object, the present invention provides the following technical solutions:
a secondary open circuit switching device comprising: the insulation assembly and the secondary connecting assembly are arranged on the workbench, a first connecting end is movably arranged on the secondary connecting assembly, a second connecting end is fixedly arranged on the insulation assembly, and the first connecting end and the second connecting end can be attached and disconnected.
Preferably, the secondary connecting assembly comprises an air cylinder installed on the workbench, and a cylinder rod of the air cylinder is connected with a first connecting end.
Preferably, a guide rod cylinder connecting plate is arranged at the end part of a cylinder rod of the cylinder, a plurality of first connecting ends are arranged on the other surface of the guide rod cylinder connecting plate, and the number of the second connecting ends is consistent with that of the first connecting ends.
Preferably, an elastic part for buffering is arranged between the guide rod cylinder connecting plate and the first connecting end.
Preferably, the elastic part comprises a sliding groove arranged on the guide rod cylinder connecting plate, the sliding groove is connected with a spring groove, a guide rail communicated with the sliding groove and the spring groove is arranged in the spring groove, an opening is formed in the end portion of the spring groove, the end portion of the first connecting end is arranged in the spring groove, the outer diameter of the inner end of the first connecting end is larger than the inner diameter of the opening, a spring is arranged in the guide rail, one end of the spring abuts against the inner end of the first connecting end, and the other end of the spring abuts against the connecting end of the sliding groove and the guide rod cylinder connecting plate.
Preferably, the first connecting end is a guide pin, a thimble contact head is arranged at the end of the guide pin, and the second connecting end is a thimble sleeve head.
Preferably, a first thread section is arranged on the guide pin, a first nut is installed on the first thread section, a second thread section is arranged on the thimble sleeve head, and a second nut is installed on the second thread section.
The utility model provides an error verification platform, includes the workstation, set up in a secondary switch board and the sampling board of opening a way of secondary on the workstation, a secondary switch board with be equipped with the switch between the sampling board of opening a way of secondary, the switch is above-mentioned arbitrary item the switching device of opening a way of secondary.
The utility model provides a pair of switching device is opened a way to secondary, include: the insulation assembly and the secondary connection assembly are arranged on the workbench, the secondary connection assembly is movably provided with a first connection end, the insulation assembly is fixedly provided with a second connection end, and the first connection end and the second connection end can be attached and disconnected.
The secondary connecting assembly is used for installing the first connecting end, the insulating assembly is used for installing the second connecting end, because the secondary switching device that opens a way is used for the circuit experiment, so can set up secondary connecting assembly and insulating assembly on the workstation, through connecting the circuit respectively at first connecting end and second connecting end, and control the contact and the disconnection of first connecting end and second connecting end, can realize the intercommunication and the disconnection of circuit, utilize the secondary switching device that opens a way to replace vacuum relay to carry out circuit control, there is not electronic device ageing, phenomenon such as coil impedance increase, thereby the accuracy of measuring result has been promoted, and to later maintenance, it is comparatively convenient to inspect the fault and change.
The utility model also provides an error verification platform sets up the secondary switching device that opens a way on the error verification platform, can promote the accuracy of experimental result.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of an error verification station provided in the present invention;
fig. 2 is a partially enlarged view of the error calibration stand according to the present invention;
fig. 3 is a top view of the error verification station provided by the present invention;
fig. 4 is a schematic view of a secondary open-circuit switching device provided by the present invention;
fig. 5 is a schematic view of an insulation assembly provided by the present invention;
fig. 6 is a schematic view of the secondary connection assembly provided by the present invention.
In FIGS. 1-6:
1-secondary connecting component, 2-workbench, 3-guide rod cylinder connecting plate, 4-guide pin, 5-thimble contact head, 6-thimble sleeve head, 7-insulating component, 8-spring groove, 9-sliding groove, 10-cylinder, 11-second thread section, 12-second nut, 13-first thread section and 14-first nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a switching device is opened a way to the secondary, utilizes the switch of the device control scheme can promote measuring result's accuracy. The utility model discloses a another core provides an error examination platform including above-mentioned secondary auto-change over device that opens a way.
Referring to fig. 1 to 6, fig. 1 is a schematic view of an error verification platform provided in the present invention; fig. 2 is a partially enlarged view of the error calibration stand according to the present invention; fig. 3 is a top view of the error verification station provided by the present invention; fig. 4 is a schematic view of a secondary open-circuit switching device provided by the present invention; fig. 5 is a schematic view of an insulation assembly provided by the present invention; fig. 6 is a schematic view of the secondary connection assembly provided by the present invention.
A secondary open circuit switching device comprising: the insulating assembly 7 and the secondary connecting assembly 1 are arranged on the workbench 2, the secondary connecting assembly 1 is movably provided with a first connecting end, the insulating assembly 7 is fixedly provided with a second connecting end, and the first connecting end and the second connecting end can be attached and disconnected.
It should be noted that the working platform 2 may be any experimental platform, for example, in the second open circuit experiment, the working platform 2 may be an error verification platform. The insulating assembly 7 comprises an insulating block and a secondary connecting end arranged on the insulating block, and the insulating block can be made of inorganic insulating materials such as ceramics, marble, glass and the like and also can be made of organic insulating materials such as plastics or dry wood and the like. Because the insulating block needs to be installed on the workbench 2, the insulating block can be provided with a plane structure in consideration of the installation stability of the insulating block, so that the plane can be attached to the surface of the workbench 2, such as square.
Because the first connecting end and the second connecting end need to be conductive and are both used for being connected with the conducting wire, the first connecting end and the second connecting end are both made of conductors, and the commonly used conductors with lower cost are aluminum, copper and the like.
Secondary coupling assembling 1 is used for installing first link, insulating assembly 7 is used for installing the second link, because the switching device is opened a way to the secondary is used for the circuit experiment, so can set up secondary coupling assembling 1 and insulating assembly 7 on workstation 2, through connecting the circuit respectively at first link and second link, and control the contact and the disconnection of first link and second link, can realize the intercommunication and the disconnection of circuit, utilize the switching device that opens a way to the secondary to replace vacuum relay and carry out circuit control, there is not the electron device ageing, phenomenon such as coil impedance increase, thereby the accuracy of measuring result has been promoted, and to later maintenance, it is comparatively convenient to inspect the fault replacement.
On the basis of the above embodiment, the secondary connection assembly 1 includes the air cylinder 10 installed on the workbench 2, and the cylinder rod of the air cylinder 10 is connected with the first connection end.
It should be noted that, the steel cylinder of the cylinder 10 is fixedly arranged on the workbench 2, and the linear reciprocating motion of the cylinder rod can be realized by changing the air pressure inside the cylinder 10, so as to drive the first connecting end to reciprocate. When the cylinder rod extends out of the cylinder 10, the first connecting end is driven to be close to the second connecting end until the first connecting end is attached to the second connecting end, and when the cylinder rod retracts, the first connecting end is driven to leave the second connecting end to disconnect the circuit, so that the opening and closing control of the circuit is realized.
Compared with a vacuum relay, the driving form of the air cylinder 10 is mechanical transmission, and the phenomena of electronic device aging, coil impedance increase and the like do not exist, so that the accuracy of a measuring result is improved, the air cylinder 10 can reliably work under severe conditions, the operation is simple, and maintenance-free operation can be basically realized.
On the basis of the above embodiment, the end of the cylinder rod of the cylinder 10 is provided with the connecting plate 3 of the guide rod cylinder 10, the other side of the connecting plate 3 of the guide rod cylinder 10 is provided with a plurality of first connecting ends, and the number of the second connecting ends is consistent with that of the first connecting ends.
It should be noted that, one side face of guide arm cylinder 10 connecting plate 3 is connected in the cylinder rod tip of cylinder 10, sets up a plurality of first links on the opposite side face of cylinder 10, and the quantity of first link can set up according to the quantity of circuit, the utility model provides a secondary auto-change over device that opens a way can be applied to the mutual-inductor test, and according to the quantity of examining the station, can examine and determine the quantity of mutual-inductor simultaneously, sets up first link and second link, and every mutual-inductor corresponds a first link or a second link, and here can all set up first link and second link into six, and one-to-one.
On the basis of the above embodiment, an elastic member for buffering is arranged between the connecting plate 3 of the guide rod cylinder 10 and the first connecting end.
It should be noted that, because the cylinder rod of the cylinder 10 drives the connecting plate 3 of the guide rod cylinder 10 to reciprocate to drive the first connecting end to move, when the cylinder rod of the cylinder 10 extends out, the first connecting end can be driven to approach the second connecting end, and if the first connecting end and the second connecting end are in rigid collision, damage may be caused to components, therefore, the first connecting end can be connected to the elastic element, and then the elastic element is arranged on the connecting plate 3 of the guide rod cylinder 10, so as to convert the collision between the first connecting end and the second connecting end into elastic collision, so as to reduce the impact between the first connecting end and the second connecting end.
On the basis of the above embodiment, the elastic member includes the spout 9 that sets up on the connecting plate 3 of guide arm cylinder 10, spout 9 is connected with spring groove 8, the inside guide rail that is equipped with the intercommunication of spout 9 and spring groove 8, the tip of spring groove 8 is equipped with the trompil, the tip of first link sets up in spring groove 8 and the outer diameter of the inner of first link is greater than the internal diameter of trompil, be equipped with the spring in the guide rail, the one end butt of spring is in the inner of first link, the other end butt of spring is in the link of spout 9 and guide arm cylinder 10 connecting plate 3.
It should be noted that the sliding groove 9 is a square structure, a guide rail is arranged in the sliding groove 9, the connection position of the sliding groove 9 and the connecting plate 3 of the guide rod cylinder 10 is closed, the sliding groove 9 is communicated with the guide rail in the spring groove 8, and the spring in the guide rail is in a compressed state or a natural state, so that the first connecting end can be restored to a natural state when moving along the opening of the spring groove 8.
When the first connecting end contacts the second connecting end, the second connecting end is in a fixed state, so that the first connecting end can move along the opening to compress the spring, the reaction force of the spring on the first connecting end can enable the first connecting end and the second connecting end to be connected more firmly, and the impact is relieved.
The elastic piece that this embodiment provided simple structure, the dismouting of being convenient for, control accuracy is high, the response is sensitive, has better durability.
On the basis of the above embodiment, in order to simplify the structure of the first connection end and the second connection end, the first connection end is the guide pin 4, the end of the guide pin 4 is provided with the thimble contact head 5, and the second connection end is the thimble sleeve head 6.
It should be noted that the thimble sleeve head 6 includes a head portion and a rod portion, one end of the rod portion is connected to the insulating assembly 7, the other end of the rod portion is connected to the head portion, and both the thimble contact head 5 and the thimble sleeve head 6 may be set to be of a polyhedral structure, such as a regular hexahedral structure, and one side of the thimble sleeve head is connected to the end portion of the guide pin 4 or the rod portion of the thimble sleeve head 6.
No matter what kind of structure sets up, because thimble contact 5 openly contacts with the head of thimble pullover 6, so with the laminating portion of the two set up to the plane can, when first link and second link contact, the plane of thimble contact 5 and the plane laminating of the head of thimble pullover 6 reach better linkage effect.
On the basis of the above embodiments, in order to facilitate the connection of the conducting wire on the guide pin 4 and the thimble sleeve head 6, the guide pin 4 is provided with the first thread section 13, the first thread section 13 is provided with the first nut 14, the thimble sleeve head 6 is provided with the second thread section 11, and the second thread section 11 is provided with the second nut 12.
It should be noted that the first threaded section 13 is connected with the thimble contact 5, the second threaded section 11 is connected with the head of the thimble sleeve head 6, when connecting the conducting wire to the guide pin 4, the conducting wire is attached to the thimble contact 5, and then the first nut 14 is rotated to press the conducting wire onto the thimble contact 5 by the first nut 14; similarly, when the wire is connected to the rod portion of the thimble sleeve head 6, the wire is attached to the head portion of the thimble sleeve head 6, and then the second nut 12 is rotated to press the wire onto the head portion of the thimble sleeve head 6 by the second nut 12. The arrangement form of this embodiment can make the wire connect more firm to improve detection efficiency.
Except that above-mentioned secondary auto-change over device that opens a way, the utility model discloses still provide an error verification platform including the secondary auto-change over device that opens a way that above-mentioned embodiment discloses, including workstation 2, set up a secondary switch board and secondary sampling board that opens a way on workstation 2, a secondary switch board and secondary are opened a way and are equipped with the switch between the sampling board, and the switch is the secondary auto-change over device that opens a way of above-mentioned arbitrary one. The structure of other parts of the error calibration platform is referred to the prior art, and is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a switching device and error verification platform are opened a way to the secondary detail introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. A secondary open circuit switching device, comprising: the insulation assembly (7) and the secondary connection assembly (1) are arranged on the workbench (2), a first connection end is movably arranged on the secondary connection assembly (1), a second connection end is fixedly arranged on the insulation assembly (7), and the first connection end and the second connection end can be attached and disconnected.
2. The secondary open circuit switching device according to claim 1, wherein the secondary connection assembly (1) comprises a cylinder (10) mounted on the worktable (2), and a cylinder rod of the cylinder (10) is connected with a first connection end.
3. The secondary open circuit switching device according to claim 2, wherein a guide rod cylinder (10) connecting plate (3) is arranged at an end of a cylinder rod of the cylinder (10), a plurality of first connecting ends are arranged on the other side of the guide rod cylinder (10) connecting plate (3), and the number of the second connecting ends is the same as that of the first connecting ends.
4. The secondary open circuit switching device according to claim 3, wherein an elastic member for buffering is arranged between the connecting plate (3) of the guide rod cylinder (10) and the first connecting end.
5. The secondary open circuit switching device according to claim 4, wherein the elastic member includes a sliding groove (9) disposed on the connecting plate (3) of the guide rod cylinder (10), the sliding groove (9) is connected with a spring groove (8), the sliding groove (9) and the spring groove (8) are internally provided with a communicated guide rail, an end of the spring groove (8) is provided with an opening, an end of the first connection end is disposed in the spring groove (8) and an outer diameter of an inner end of the first connection end is larger than an inner diameter of the opening, the guide rail is provided with a spring, one end of the spring abuts against the inner end of the first connection end, and the other end of the spring abuts against a connecting end of the sliding groove (9) and the connecting plate (3) of the guide rod cylinder (10).
6. The secondary open circuit switching device according to any one of claims 1 to 5, wherein the first connection end is a guide pin (4), an ejector pin contact (5) is disposed at an end of the guide pin (4), and the second connection end is an ejector pin sleeve head (6).
7. The secondary open-circuit switching device according to claim 6, wherein a first thread section (13) is provided on the guide pin (4), a first nut (14) is installed on the first thread section (13), a second thread section (11) is provided on the thimble sleeve head (6), and a second nut (12) is installed on the second thread section (11).
8. An error verification platform, comprising a workbench (2), a secondary switching board and a secondary open-circuit sampling board which are arranged on the workbench (2), wherein a switch is arranged between the secondary switching board and the secondary open-circuit sampling board, and the switch is the secondary open-circuit switching device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921156322.XU CN210294506U (en) | 2019-07-22 | 2019-07-22 | Secondary open circuit switching device and error verification platform with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921156322.XU CN210294506U (en) | 2019-07-22 | 2019-07-22 | Secondary open circuit switching device and error verification platform with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210294506U true CN210294506U (en) | 2020-04-10 |
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ID=70103823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921156322.XU Active CN210294506U (en) | 2019-07-22 | 2019-07-22 | Secondary open circuit switching device and error verification platform with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210294506U (en) |
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2019
- 2019-07-22 CN CN201921156322.XU patent/CN210294506U/en active Active
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