Full-automatic verification equipment for electronic mutual inductor

Abstract

The invention discloses electronic mutual inductor full-automatic verification equipment, and relates to the technical field of mutual inductor verification devices, the electronic mutual inductor full-automatic verification equipment comprises a verification detection structure, the verification detection structure comprises a case, one side surface of the case is provided with a dismounting opening, the dismounting opening is connected with a dismounting mainboard, the inner wall of the upper end of the case is provided with a plurality of limiting grooves, and the limiting grooves are connected with the dismounting mainboard. A plurality of limiting grooves are formed in the detachable mainboard, a plurality of limiting insertion blocks are arranged on the detachable mainboard, the limiting insertion blocks can be inserted into the limiting grooves, a first connecting socket and a control panel are arranged on the detachable mainboard, a display screen is arranged on the control panel, a verification component is arranged in the verification detection structure and comprises a protection plate seat, and the protection plate seat is placed in the case. A circuit board is arranged at the bottom in the protection plate base, a control chip is arranged on the circuit board, a control switch is arranged on the side wall of the machine box, and the first connecting socket and the control panel are both electrically connected with the circuit board. The device is simple in structure and convenient to disassemble.

Description

Technical Field

[0001] The invention relates to the technical field of mutual inductor calibration devices, and in particular to a fully automatic calibration device for an electronic mutual inductor. Background Art

[0002] As a bridge from the analog world to the digital world, digital (photoelectric) transformers play an important role in digital substations. It can be considered that digital (photoelectric) transformers are the cornerstone of digital substations. All digital quantities come from them, so the accuracy and performance of digital (photoelectric) transformers are very important. my country's Metrology Law stipulates that all measuring instruments must be transmitted, that is, all measuring instruments must be able to achieve value traceability. Therefore, in practical applications, digital (photoelectric) transformers need to be transmitted, and they also need to be calibrated after on-site installation to verify their measurement accuracy and stability, as well as the correctness of their support for the IEC61850 protocol.

[0003] According to Chinese patent publication number CN203385848U, which relates to the technical field of transformer calibrators, an intelligent fully automatic transformer calibrator is disclosed, including a voltage / current test module, a control module, a display module and an intelligent controller; the voltage / current test module is connected to the control module; the control module is provided with an output port that can be connected to the input end of the transformer under test; the display module is provided with a loop port connected to the output end of the transformer under test, and a loop can be formed with the output port through the transformer under test; the voltage / current test module, the control module and the display module are all connected to the intelligent controller; the intelligent controller can control the voltage / current test module, the control module and the display module to automatically complete the work according to a pre-set program.

[0004] The existing electronic transformer automatic calibration equipment is installed in a fixed manner. Due to the fixed setting, subsequent maintenance and disassembly work cannot be carried out.

[0005] Therefore, there is an urgent need in the art for a new type of fully automatic electronic transformer calibration equipment to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide an electronic transformer fully automatic calibration device to solve the problems existing in the above-mentioned prior art. The calibration and detection structure is a split structure, which is convenient for assembly and disassembly.

[0007] To achieve the above object, the present invention provides the following solutions: The present invention discloses a fully automatic calibration device for an electronic mutual inductor, comprising a calibration and detection structure, wherein the calibration and detection structure comprises a chassis, a disassembly opening is provided on one side of the chassis, a disassembly mainboard is connected to the disassembly opening, a plurality of limiting grooves are provided on the inner wall of the upper end of the chassis, a plurality of limiting plugs are provided on the disassembly mainboard, the limiting plugs can be inserted into the limiting grooves, a first connecting socket and a control panel are provided on the disassembly mainboard, a display screen is provided on the control panel, a calibration component is provided in the calibration and detection structure, and the calibration component comprises a protection plate seat, the protection plate seat is placed inside the chassis, a circuit board is provided at the bottom inside the protection plate seat, a control chip is provided on the circuit board, a control switch is provided on the side wall of the chassis, and the first connecting socket and the control panel are both electrically connected to the circuit board.

[0008] Preferably, the verification and detection structure also includes a protective plate, which is arranged between the chassis and the disassembled mainboard, and is provided with a socket limiting through hole and a panel limiting through hole, the first connecting socket can be inserted into the socket limiting through hole, and the control panel can be inserted into the panel limiting through hole.

[0009] Preferably, a first protective frame and a second protective frame are also installed on the outside of the chassis, the first protective frame is installed at the joint between the disassembled mainboard and the chassis, and the second protective frame is installed on a side of the chassis away from the disassembly opening.

[0010] Preferably, push-pull handles are fixed on both sides of the disassembly mainboard.

[0011] Preferably, a handle is provided at the upper end of the chassis.

[0012] Preferably, a plurality of second connection sockets are further provided on the side wall of the chassis, and the second connection sockets can be electrically connected to the circuit board.

[0013] Preferably, a plurality of first connectors are provided on a surface of the protection board seat close to the disassembled mainboard, and the first connection socket and the control panel are electrically connected to the circuit board through the first connectors; A plurality of second connectors are provided on a surface of the protection board seat close to the second connection socket, and the control switch and the second connection socket are both electrically connected to the circuit board through the second connectors.

[0014] Preferably, the circuit board is equipped with a capacitor.

[0015] Preferably, a plurality of laminating frames are mounted on the circuit board, and the upper ends of the laminating frames are connected to the limiting adapter frames via elastic expansion and contraction devices, and the limiting adapter frames can extend into the limiting grooves.

[0016] Preferably, an exhaust fan seat and an air inlet fan seat are respectively installed on both sides of the top of the chassis, the exhaust fan seat and the air inlet fan seat are both connected to the interior of the chassis, the exhaust fan seat is connected to an exhaust duct, the air inlet fan seat is connected to an air inlet duct, and an exhaust fan is provided on the exhaust fan seat.

[0017] Compared with the prior art, the present invention has achieved the following technical effects: In the present invention, the circuit board is installed on the protection board seat, and the circuit board and electrical components such as the control chip are arranged on the protection board seat. The protection board seat is placed in the chassis, and the disassembly mainboard is plugged into the disassembly opening of the chassis. When the internal maintenance is required, only the disassembly mainboard needs to be pulled out, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a fully automatic calibration device for an electronic transformer according to an embodiment of the present invention; Figure 2 It is a side schematic diagram of the fully automatic calibration equipment of the electronic transformer according to the embodiment of the present invention; Figure 3 This is a schematic diagram of the back of the fully automatic calibration device for electronic transformers according to an embodiment of the present invention; Figure 4 This is a disassembled diagram of the fully automatic calibration device for electronic transformers according to an embodiment of the present invention; Figure 5 This is a disassembled diagram of the verification and detection structure in the fully automatic verification equipment for electronic transformers according to an embodiment of the present invention; Figure 6 This is a disassembled diagram of the calibration components in the fully automatic calibration equipment for electronic transformers according to an embodiment of the present invention; In the figure: 1- verification and detection structure; 2- first connection socket; 3- display screen; 4- operation panel; 5- first protection frame; 6- second protection frame; 7- protection plate; 8- verification component; 9- handle; 10- exhaust fan seat; 11- exhaust duct; 12- first connector; 13- circuit board; 14- capacitor; 15- fitting frame; 16- elastic expansion device; 17- limit adapter frame; 18- second connector; 19- protection plate seat; 20- control chip; 21- control switch; 22- chassis; 23- second connection socket; 24- air inlet duct; 25- air inlet fan seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The purpose of the present invention is to provide an electronic transformer fully automatic calibration device to solve the problems existing in the above-mentioned prior art. The calibration and detection structure is a split structure, which is convenient for assembly and disassembly.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-Figure 6 As shown, this embodiment provides an electronic transformer automatic calibration device, including a calibration detection structure 1, the calibration detection structure 1 includes a chassis 22, a disassembly opening is provided on one side (i.e., the front) of the chassis 22, and a disassembly mainboard is connected to the disassembly opening. In order to realize the detachable connection of the disassembly mainboard, a plurality of limiting grooves are provided on the inner wall of the upper end of the chassis 22, and the limiting grooves are rectangular strip grooves, and one end of which extends to the front of the chassis 22, which can be understood as an opening at one end. A plurality of limiting plugs are provided on the disassembly mainboard, and the number of the limiting plugs is the same as the number of the limiting grooves and corresponds one to one. In this embodiment, there are two limiting plugs and two limiting grooves, and the two limiting plugs can be inserted into one end of the two limiting grooves respectively. A first connection socket 2 and a control panel 4 are provided on the disassembly mainboard, and the first connection socket 2 is used to connect the transformer, and a display screen 3 is provided on the control panel 4 for displaying relevant information. A verification component 8 is provided in the verification detection structure 1, and the verification component 8 includes a protection plate seat 19, which is a box-shaped structure with an upper end open, and the protection plate seat 19 is placed inside the chassis 22. A circuit board 13 is provided at the bottom of the protection plate seat 19, and a control chip 20 is provided on the circuit board 13, and the control chip 20 is used for data analysis. A control switch 21 is provided on the side wall of the chassis 22, and the control switch 21 is used to control the switch of the entire device. The first connection socket 2 and the control panel 4 are both electrically connected to the circuit board 13, so as to transmit relevant data to the control chip 20 on the circuit board 13.

[0024] In actual use, the mainboard can be pushed in simply by aligning the limiting plug on the mainboard to be removed with the opening end of the limiting groove, which is simple and convenient.

[0025] In this embodiment, if Figure 5As shown, the verification and detection structure 1 also includes a protective plate 7, which is arranged between the chassis 22 and the disassembled mainboard. Specifically, the protective plate 7 is provided with a socket limiting through hole and a panel limiting through hole, and the number of the socket limiting through holes is the same as that of the first connection socket 2, which can be 3-4, and the back of the first connection socket 2 can be inserted into the socket limiting through hole. Similarly, the control panel 4 can be inserted into the panel limiting through hole.

[0026] In this embodiment, a first protective frame 5 and a second protective frame 6 are also installed on the outside of the chassis 22. The first protective frame 5 and the second protective frame 6 are both rectangular frames. The first protective frame 5 is installed at the joint between the disassembled mainboard and the chassis 22, which can not only protect the chassis 22, but also prevent the disassembled mainboard from being separated from the chassis 22. The second protective frame 6 is installed on the side of the chassis 22 away from the disassembly opening, and also plays a role in protecting the chassis 22.

[0027] In this embodiment, push-pull handles are fixed on both sides of the disassembled mainboard, and the staff can push and pull the disassembled mainboard through the push-pull handles.

[0028] In this embodiment, a handle 9 is provided at the upper end of the chassis 22, and a worker can lift the calibration and detection structure 1 by the handle 9 for easy carrying.

[0029] In this embodiment, a plurality of second connection sockets 23 are further provided on the side wall of the chassis 22, and the second connection sockets 23 can be electrically connected to the circuit board 13. The purpose of providing the second connection sockets 23 is that the first connection socket 2 and the second connection socket 23 are different, so as to be used to connect different devices. Specifically, the first connection socket 2 can be a TRS socket, and the second connection socket 23 can be a pin header socket. Of course, those skilled in the art can completely select the desired socket according to actual needs, and are not limited to these two types.

[0030] In this embodiment, a plurality of first connectors 12 are provided on a surface of the protection board seat 19 close to the disassembly of the main board. The number of the first connectors 12 matches the number of the first connection sockets 2 and the control panel 4. The first connection sockets 2 and the control panel 4 are both electrically connected to the circuit board 13 through the first connectors 12.

[0031] A plurality of second connectors 18 are provided on one surface of the protection board seat 19 close to the second connection socket 23 , and the number of the second connectors 18 matches the number of the control switches 21 and the second connection sockets 23 . The control switches 21 and the second connection sockets 23 are both electrically connected to the circuit board 13 through the second connectors 18 .

[0032] The first connector 12 and the second connector 18 are provided to realize the electrical connection between the first connection socket 2, the control panel 4, the control switch 21, the second connection socket 23 and the circuit board 13, so the first connector 12 and the second connector 18 are both conductive devices, specifically flexible connectors, and further FFC / FPC flexible connectors. Of course, those skilled in the art can also replace them with components that can conduct electricity, not just limited to this one.

[0033] In this embodiment, the circuit board 13 is equipped with a capacitor 14, through which electric energy can be transmitted, a specified current and voltage are emitted, and act on the mutual inductor, the mutual inductor performs measurement, and the control chip 20 can analyze the deviation between them, which is convenient for subsequent correction processing. In addition, the circuit board 13 can also be connected to a power plug for plugging into an external power source, thereby powering the entire device.

[0034] In this embodiment, a plurality of laminating frames 15 are mounted on the circuit board 13. The laminating frames 15 are specifically provided with two rows. The two rows of laminating frames 15 correspond to the positions of the limiting grooves one by one, and each row is provided with 4-5 laminating frames 15. The upper end of each laminating frame 15 is connected to the limiting adapter frame 17 through an elastic telescopic device 16. The elastic telescopic device 16 can be a hydraulic buffer or a hydraulic spring. When the protection plate seat 19 is placed inside the chassis 22, the limiting adapter frame 17 can extend into the limiting groove. Under the compression reaction force of the elastic telescopic device 16, the elastic telescopic device 16 can push the limiting adapter frame 17 upward, so that the limiting adapter frame 17 can be tightly against the limiting groove. The larger friction force can prevent the protection plate seat 19 from moving, and the two rows of limiting adapter frames 17 can also play a role in limiting and aligning the circuit board 13.

[0035] In this embodiment, an exhaust fan base 10 and an air inlet base 25 are respectively installed on both sides of the top of the chassis 22. The exhaust fan base 10 is provided with an exhaust channel, and the air inlet base 25 is provided with an air inlet channel. One end of the exhaust channel in the exhaust fan base 10 and one end of the air inlet channel in the air inlet base 25 are both connected to the inside of the chassis 22. An exhaust duct 11 is connected to one end of the exhaust channel in the exhaust fan base 10 away from the inside of the chassis 22, and an air inlet duct 24 is connected to one end of the air inlet channel in the air inlet base 25 away from the chassis 22. An exhaust fan is provided at one end of the exhaust channel in the exhaust fan base 10 close to the chassis 22. In actual use, the exhaust fan can be started, and the external cold air can enter the chassis 22 through the air inlet pipe 24 and the air inlet channel on the air inlet base 25, thereby cooling the circuit board 13 and the various components thereon. The hot air after heat exchange is then discharged back to the outside atmosphere from the exhaust channel on the exhaust base 10 and the exhaust pipe 11.

[0036] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electronic transformer automatic calibration device, characterized in that: The invention comprises a verification and detection structure (1), wherein the verification and detection structure (1) comprises a chassis (22), a disassembly opening being provided on one side of the chassis (22), a disassembly mainboard being connected to the disassembly opening, a plurality of limit grooves being provided on the inner wall of the upper end of the chassis (22), a plurality of limit plugs being provided on the disassembly mainboard, the limit plugs being capable of being inserted into the limit grooves, a first connection socket (2) and a control panel (4) being provided on the disassembly mainboard, a display screen (3) being provided on the control panel (4), a verification component (8) being provided inside the verification and detection structure (1), the verification component (8) comprising a protection plate seat (19), the protection plate seat (19) being placed inside the chassis (22), a circuit board (13) being provided at the bottom inside the protection plate seat (19), a control chip (20) being provided on the circuit board (13), a control switch (21) being provided on the side wall of the chassis (22), and the first connection socket (2) and the control panel (4) being both electrically connected to the circuit board (13).

2. The fully automatic calibration equipment for electronic transformers according to claim 1 is characterized in that: The verification and detection structure (1) further comprises a protective plate (7), wherein the protective plate (7) is arranged between the chassis (22) and the disassembled mainboard, and the protective plate (7) is provided with a socket limiting through hole and a panel limiting through hole, wherein the first connection socket (2) can be inserted into the socket limiting through hole, and the control panel (4) can be inserted into the panel limiting through hole.

3. The fully automatic calibration equipment for electronic transformers according to claim 1 is characterized in that: A first protective frame (5) and a second protective frame (6) are also installed on the outer side of the chassis (22); the first protective frame (5) is installed at the joint between the disassembled mainboard and the chassis (22); and the second protective frame (6) is installed on a side of the chassis (22) away from the disassembly opening.

4. The fully automatic calibration equipment for electronic transformers according to claim 1 is characterized in that: Push-pull handles are fixed on both sides of the disassembly mainboard.

5. The fully automatic calibration equipment for electronic transformers according to claim 1 is characterized in that: A handle (9) is provided at the upper end of the chassis (22).

6. The fully automatic calibration equipment for electronic transformers according to claim 1 is characterized in that: A plurality of second connection sockets (23) are also provided on the side wall of the chassis (22), and the second connection sockets (23) can be electrically connected to the circuit board (13).

7. The fully automatic calibration equipment for electronic transformers according to claim 6 is characterized in that: A plurality of first connectors (12) are provided on a surface of the protection board seat (19) close to the disassembled main board, and the first connection socket (2) and the control panel (4) are both electrically connected to the circuit board (13) via the first connectors (12); A plurality of second connectors (18) are provided on a surface of the protection board seat (19) close to the second connection socket (23), and the control switch (21) and the second connection socket (23) are both electrically connected to the circuit board (13) via the second connectors (18).

8. The fully automatic calibration equipment for electronic transformers according to claim 1 is characterized in that: The circuit board (13) is equipped with a capacitor (14).

9. The fully automatic calibration equipment for electronic transformers according to claim 1 is characterized in that: A plurality of laminating frames (15) are mounted on the circuit board (13); the upper ends of the laminating frames (15) are connected to a position-limiting adapter frame (17) via an elastic telescopic device (16); and the position-limiting adapter frame (17) can extend into the position-limiting groove.

10. The fully automatic calibration equipment for electronic transformers according to claim 1, characterized in that: An exhaust fan base (10) and an air inlet base (25) are respectively installed on both sides of the top of the chassis (22); the exhaust fan base (10) and the air inlet base (25) are both connected to the interior of the chassis (22); the exhaust fan base (10) is connected to an exhaust duct (11); the air inlet base (25) is connected to an air inlet duct (24); and an exhaust fan is provided on the exhaust fan base (10).

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