CN214750597U

CN214750597U - Transformer on-line state automatic detection device

Info

Publication number: CN214750597U
Application number: CN202120591782.6U
Authority: CN
Inventors: 骆刚; 吴运明; 陈彦; 纪小剑
Original assignee: Wuhan Zhiling Chuanglian Technology Co ltd
Current assignee: Wuhan Zhiling Chuanglian Technology Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-11-16
Anticipated expiration: 2031-03-23

Abstract

The utility model discloses an automatic detection device of transformer on-line state, include: the transformer comprises a transformer body, an insulating bracket, a megger, a wireless transceiving module and the like; the transformer is fixed with a megger through an insulating support, a wireless transceiving module is fixed beside the megger, a metal shell of a transformer main body is fixedly welded with a measuring end of an attached column megger of a metal structure, a first electric connecting column and a second electric connecting column are respectively arranged at the measuring end of the attached column megger, the first electric connecting column and the second electric connecting column are electrically connected with the measuring end of the megger, the first electric connecting column is electrically connected with a bushing through a lead, the second electric connecting column is electrically connected with an attached column through a lead, a metal ring is fixed on a rotating column of the megger, a pointer of an integrated structure is arranged on the metal ring, a first electric connecting block is arranged at the limit value of a scale arc used for displaying the megger value on the megger, and a second electric connecting block is arranged beside the rotating column; the utility model has the advantages that: human resources and low risk coefficient.

Description

Transformer on-line state automatic detection device

Technical Field

The utility model relates to the electric power engineering field specifically is a transformer on-line status automatic checkout device.

Background

A Transformer (Transformer) is a device that changes an alternating-current voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core); the main functions are as follows: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like; according to the application, the method can be divided into: power transformers and special transformers (furnace transformers, rectification transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impulse transformers, instrument transformers, electronic transformers, reactors, transformers, etc.); the maintenance of the transformer is the daily work which is required to be carried out by electrician operators and electrician operation and maintenance personnel in order to keep the normal technical state of the transformer and prolong the service life; maintenance of the transformer is an important matter in the management of the electrical equipment; if the maintenance work is done in place, the failure rate of the equipment can be reduced, the maintenance cost is saved, and the cost is reduced; before the transformer is put into operation (usually after drying) after installation or maintenance and after long-term shutdown, the insulation resistance of the coil is measured, and a 1000-2500V megameter is used for measuring the insulation resistance of the coil; the allowable value of the coil insulation resistance is lower than 70% of the factory production; the insulation monitoring of the transformer is mostly dependent on manual measurement of the insulation resistance of a transformer coil, the transformer is difficult to measure due to the large size, the transformer relates to high-voltage current, and the measurement risk coefficient is high, so that the prior art needs an automatic detection device for the online state of the transformer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic detection device of transformer on-line status to solve the problem mentioned in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an automatic transformer online state detection device comprises: the transformer comprises a transformer body, an insulating support, a megger, a wireless transceiver module, a first power connection pole, a second power connection pole, an attached pole, a rotating pole, a metal ring, a pointer, a calibration arc, a contact, a first power connection block, a second power connection block, a reed, a first signal wire, a second signal wire and a sleeve power connection potential; the transformer main body is a transformer needing to be detected and maintained in the utility model, an insulating support with a square frame structure is fixed on the transformer main body, a panel is fixed on the front side of the insulating support, a megger is fixed on the panel, a wireless transceiving module is fixed on the side of the megger, an attaching post with a metal structure is fixed on the metal shell of the transformer main body in a welding way, the attaching post and the metal shell of the transformer main body keep good electric conductivity, a first electric connecting post and a second electric connecting post are respectively arranged at the measuring end of the megger, the first electric connecting post and the second electric connecting post are electrically connected with the measuring end of the megger, the first electric connecting post is electrically connected with a bushing electric potential of a ceramic bushing on the transformer main body through a lead, the second electric connecting post is electrically connected with the attaching post through a lead, a rotating post of the megger (the megger is directly applied to the application, the rotating column is a rotating part used for deflection test on the megohmmeter, and the megohmmeter is directly applied in the application, so that a metal ring with a metal sleeve structure is concentrically embedded outside the rotating column and the megohmmeter, a pointer with an integrated structure is arranged on the metal ring, a first electricity-connecting block with a metal block structure is arranged at a limit value (the value is an acceptable minimum resistance value of normal work of the transformer main body) of a scale arc used for displaying a megohmmeter value, and a contact with a metal structure is embedded outside one end of the pointer far away from the rotating column; a second power connection block is arranged beside the rotary column and fixed on the front surface of the megohmmeter, and good permanent non-fixed electric connection is kept between the second power connection block and the rotary column.

Preferably, a spring is fixed on the second contact block, the spring has an elastic capability of deflecting towards the side of the rotary column, and the spring is tightly attached to the outer circumferential surface of the rotary column.

Preferably, the contact is made of light metal, the contact covers the end part of the pointer, and the pointer and the contact keep good conductive capacity.

Preferably, the first signal line led out of the first power connection block is electrically connected with a signal acquisition end of the wireless transceiver module, and the second signal line led out of the second power connection block is electrically connected with another signal acquisition end of the wireless transceiver module.

Preferably, the wireless transceiver module is provided with a matched alarm device, the alarm device and the wireless transceiver module are in wireless radio connection, or the alarm device and the wireless transceiver module are in wireless connection through a cloud network, or the wireless transceiver module is cancelled, so that the first signal line and the second signal line are in direct connection with the alarm device and the power supply through wires to form a series loop.

Preferably, the insulating support is a PVC frame structure or a wood frame coated with a paint surface.

Preferably, when the contact deflects to the first power connection block along with the pointer, the contact can be in direct contact with the first power connection block, so that good electrical connection is realized.

Compared with the prior art, the beneficial effects of the utility model are that: through wireless transceiver module, first electric pole, second electric pole, attach the post, the rotary column, the metal loop, the pointer, the scale arc, the contact, first electric block that connects, second electric block that connects, the reed, first signal line, the establishment of second signal line, transformer on-line state automated inspection has been realized, need not rely on the manual work to measure transformer coil insulation resistance, human resources have been practiced thrift, because on-line measurement and transformer relate to high-tension current, it also reduces a lot to measure danger coefficient, and when resistance between transformer main part shell and sleeve pipe connect electric potential is in normal range, wireless transceiver module only does standby work, can not occupy and waste the data transmission resource in high in the clouds, also can not occupy high in the clouds or alarm terminal's data storage.

Drawings

Fig. 1 is a schematic perspective view of an on-line automatic transformer status detection device.

Fig. 2 is a schematic structural diagram of a front side of an on-line state automatic detection device of a transformer.

Fig. 3 is a schematic diagram of a backside three-dimensional structure of an on-line state automatic detection device for a transformer.

Fig. 4 is an enlarged schematic view of the structure of fig. 1A.

Fig. 5 is a schematic reference diagram of a first embodiment of the present invention.

Fig. 6 is a schematic reference diagram of a second embodiment of the present invention.

Fig. 7 is a schematic reference diagram of a third embodiment of the present invention.

In the figure: 1. a transformer body; 2. an insulating support; 3. a megger; 4. a wireless transceiver module; 5. a first electric connecting post; 6. a second electric connecting post; 7. an attachment post; 8. turning the column; 9. a metal ring; 10. a pointer; 11. a graduated arc; 12. a contact; 13. a first power connection block; 14. a second power connection block; 15. a reed; 16. a first signal line; 17. a second signal line; 18. the sleeve is connected with an electric potential.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.

Referring to fig. 1 to 7, in an embodiment of the present invention, an on-line state automatic detection device for a transformer includes: the power supply comprises a transformer main body 1, an insulating support 2, a megger 3, a wireless transceiving module 4, a first power connection pole 5, a second power connection pole 6, an attaching pole 7, a rotating pole 8, a metal ring 9, a pointer 10, a graduated arc 11, a contact 12, a first power connection block 13, a second power connection block 14, a reed 15, a first signal wire 16, a second signal wire 17 and a sleeve power connection potential 18; the transformer main body 1 is a transformer needing detection and maintenance in the utility model, an insulating support 2 with a square frame structure is fixed on the transformer main body 1, a panel is fixed on the front side of the insulating support 2, a megohmmeter 3 is fixed on the panel, a wireless transceiving module 4 is fixed on the side of the megohmmeter 3, an attaching post 7 with a metal structure is fixed on the metal shell of the transformer main body 1 in a welding way, the attaching post 7 and the metal shell of the transformer main body 1 keep good conductive capability, a first electric connecting post 5 and a second electric connecting post 6 are respectively arranged at the measuring end of the megohmmeter 3, the first electric connecting post 5, the second electric connecting post 6 are electrically connected with the measuring end of the megohmmeter 3, the first electric connecting post 5 is electrically connected with a bushing electric potential 18 of a ceramic bushing on the transformer main body 1 through a lead, the second electric connecting post 6 is electrically connected with the attaching post 7 through a lead, a metal ring 9 with a metal sleeve structure is concentrically and externally embedded on a rotating column 8 of the megohmmeter 3 (the megohmmeter 3 is directly applied in the application, and the rotating column 8 is a rotating part for deflection test on the megohmmeter 3. the megohmmeter 3 is directly applied in the application, so that the matching principle and the matching structure between the rotating column 8 and the megohmmeter 3 are omitted, a pointer 10 with an integrated structure is arranged on the metal ring 9, a first electricity connecting block 13 with a metal block structure is arranged at the limit value of a scale arc 11 for displaying the megohmmeter value on the megohmmeter 3 (the limit value is the acceptable minimum resistance value of the normal work of the transformer body 1), and a contact 12 with a metal structure is embedded outside one end of the pointer 10, which is far away from the rotating column 8; a second electricity connecting block 14 is arranged beside the rotating column 8 and fixed on the front surface of the megohmmeter 3, and a good permanent non-fixed electric connection is kept between the second electricity connecting block 14 and the rotating column 8.

A spring plate 15 is fixed on the second electric block 14, the spring plate 15 has the elastic capability of deflecting towards the rotary column 8 side, and the spring plate 15 is tightly attached to the outer circumferential surface of the rotary column 8.

The contact 12 is made of light metal, the contact 12 covers the end of the pointer 10, and the pointer 10 and the contact 12 keep good conductive capacity.

The first signal wire 16 led out of the first power connection block 13 is electrically connected with a signal acquisition end of the wireless transceiver module 4, and the second signal wire 17 led out of the second power connection block 14 is electrically connected with another signal acquisition end of the wireless transceiver module 4.

The wireless transceiver module 4 is provided with a matched alarm device, the alarm device and the wireless transceiver module 4 are in wireless connection, or the alarm device and the wireless transceiver module 4 are in wireless connection through a cloud network, or the wireless transceiver module 4 is cancelled, so that the first signal line 16 and the second signal line 17 are in direct connection with the alarm device and a power supply through wires to form a series loop.

The insulating support 2 is a PVC frame structure or a wood frame coated with a paint surface.

When the contact 12 deflects to the first electric connection block 13 along with the pointer 10, the contact can be in direct contact with the first electric connection block 13, and good electric connection is realized.

The utility model discloses a theory of operation is:

when the megohmmeter 3 is used, the resistance value between the shell of the transformer main body 1 and the bushing connection potential 18 is measured in real time, when the resistance value between the shell of the transformer main body 1 and the bushing connection potential 18 is in a normal range, the wireless transceiver module 4 only works in a standby mode, cloud data transmission resources cannot be occupied and wasted, and data storage of a cloud end or an alarm terminal cannot be occupied, when the resistance value between the shell of the transformer main body 1 and the bushing connection potential 18 is lower than the normal range, because the first connection block 13 is arranged at the limit value of the scale arc 11 used for displaying the megohmmeter value on the megohmmeter 3, when the pointer 10 deflects to the limit value, the pointer 10 drives the contact 12 to move until the contact 12 is contacted with the first connection block 13, at the moment, the first connection block 13 and the contact 12 are electrically conducted, at the moment, the first signal line 16 and the second signal line 17 pass through the second connection block 14, The reed 15, the metal ring 9, the pointer 10, the contact 12 and the first electricity connecting block 13 are connected and conducted to achieve electricity conduction, the scale arc 11 is used for being matched with the pointer 10 to display the resistance value between the shell of the transformer body 1 and the bushing electricity connecting potential 18 in real time, field personnel can conveniently and directly judge the health condition of the resistance value between the shell of the transformer body 1 and the bushing electricity connecting potential 18, the transformer body 1 can be maintained before the resistance value between the shell of the transformer body 1 and the bushing electricity connecting potential 18 is in a problem, and therefore electricity utilization safety is prevented from being delayed.

The first embodiment is as follows: when the alarm device and the wireless transceiver module 4 adopt the wireless radio connection condition, the alarm device is arranged in an online monitoring room; when the wireless transceiver module 4 receives the electrical conduction signals of the first signal line 16 and the second signal line 17, the alarm device is directly controlled to make an alarm response (such as sound and flashing light) in a wireless transmission mode, so that a worker receives a signal indicating that the insulation resistance value of the transformer body 1 is unqualified in a remote monitoring room, the signal is made to make a response rapidly, unnecessary loss is avoided, and the automatic detection of the online state of the transformer is realized.

Example two: when the alarm device and the wireless transceiver module 4 are in wireless connection through a cloud network, the alarm device is arranged in an online monitoring room; when the wireless transceiver module 4 receives the electrical conduction signals of the first signal line 16 and the second signal line 17, the wireless transceiver module can directly send out an alarm signal to the cloud end in a wireless transmission mode, after the cloud end receives the alarm signal, the corresponding alarm device is searched again, and after the alarm signal is sent out to the corresponding alarm device, the alarm device can directly make an alarm response (such as sound and flare light) after receiving the alarm signal, and then a worker receives a signal that the insulation resistance value of the transformer body 1 is unqualified in a remote monitoring room, so that the response is quickly made, unnecessary loss is avoided, and the automatic detection of the online state of the transformer is realized.

Example three: the wireless transceiver module 4 is cancelled, so that when the first signal wire 16 and the second signal wire 17 adopt a wire to directly form a series loop with the alarm device and the power supply, the alarm device is arranged in the online monitoring room; first signal line 16, second signal line 17 circuit switch on, can directly switch on the series circuit that alarm device, power are constituteed, and alarm device directly receives electric work, directly makes the alarm response (like sound, light of twinkling of an eye), and then the staff receives the unqualified signal of transformer main part 1 insulation resistance value in the control room of remote, and then reacts rapidly, avoids unnecessary loss, realizes transformer on-line state automated inspection (wireless transceiver module 4 is the direct application of this application, no matter it is common wireless transmission principle among the prior art with alarm device adoption wireless directly link or utilize the indirect connection of high in the clouds, omits its wireless transmission principle admittedly).

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An automatic transformer online state detection device comprises: the power supply comprises a transformer main body (1), an insulating support (2), a megger (3), a wireless transceiver module (4), a first power connection pole (5), a second power connection pole (6), an attachment pole (7), a rotating pole (8), a metal ring (9), a pointer (10), a scale arc (11), a contact (12), a first power connection block (13), a second power connection block (14), a reed (15), a first signal wire (16), a second signal wire (17) and a sleeve power connection potential (18); the method is characterized in that: an insulating support (2) with a square frame structure is fixed on a transformer body (1), a panel is fixed on the front side of the insulating support (2), a megger (3) is fixed on the panel, a wireless transceiving module (4) is fixed on the side of the megger (3), an attaching post (7) with a metal structure is welded and fixed on a metal shell of the transformer body (1), the attaching post (7) and the metal shell of the transformer body (1) keep good conductive capability, a first electric post (5) and a second electric post (6) are respectively arranged at the measuring end of the megger (3), the first electric post (5), the second electric post (6) and the measuring end of the megger (3) are electrically connected, the first electric post (5) is electrically connected with a bushing potential (18) of a ceramic bushing on the transformer body (1) through a lead, and the attaching post (7) are electrically connected through the lead, a metal ring (9) with a metal sleeve structure is concentrically and externally embedded on a rotating column (8) of the megohmmeter (3), a pointer (10) with an integrated structure is arranged on the metal ring (9), a first electricity-receiving block (13) with a metal block structure is arranged at the limit value of a scale arc (11) used for displaying the megohmmeter value on the megohmmeter (3), and a contact (12) with a metal structure is externally embedded at one end, far away from the rotating column (8), of the pointer (10); a second electricity connecting block (14) is arranged beside the rotating column (8) and fixed on the front surface of the megohmmeter (3), and the second electricity connecting block (14) and the rotating column (8) are kept in good permanent non-fixed type electric connection.

2. The transformer online state automatic detection device according to claim 1, characterized in that: a reed (15) is fixed on the second electric connection block (14), the reed (15) has the elastic capability of deflecting towards the rotary column (8), and the reed (15) is tightly attached to the outer circumferential surface of the rotary column (8).

3. The transformer online state automatic detection device according to claim 1, characterized in that: the contact (12) is made of light metal, the contact (12) is coated on the end part of the pointer (10), and the pointer (10) and the contact (12) keep good conductive capacity.

4. The transformer online state automatic detection device according to claim 1, characterized in that: the first signal wire (16) is led out of the first power connection block (13) and is electrically connected with the signal acquisition end of the wireless transceiver module (4), and the second signal wire (17) is led out of the second power connection block (14) and is electrically connected with the other signal acquisition end of the wireless transceiver module (4).

5. The transformer online state automatic detection device according to claim 1, characterized in that: the wireless transceiver module (4) is provided with a matched alarm device, the alarm device and the wireless transceiver module (4) are in wireless radio connection, or the alarm device and the wireless transceiver module (4) are in wireless connection through a cloud network, or the wireless transceiver module (4) is cancelled, so that the first signal line (16) and the second signal line (17) are in direct connection with the alarm device and a power supply through wires to form a series loop.

6. The transformer online state automatic detection device according to claim 1, characterized in that: the insulating support (2) is a PVC frame structure or a wood frame coated with a paint surface.

7. The transformer online state automatic detection device according to claim 1, characterized in that: when the contact (12) deflects to the first electricity connecting block (13) along with the pointer (10), the contact can be in direct contact with the first electricity connecting block (13), and good electrical connection is realized.