External oil vertical metal corrugated oil conservator with integrated oil level signal wiring device

Abstract

The utility model belongs to the technical field of manufacturing of metal corrugated oil conservators for transformers, and particularly relates to an external oil vertical type metal corrugated oil conservator with an integrated oil level signal wiring device, which comprises an oil conservator shell, a corrugated core body, a magnetic induction synchronizing mechanism and an integrated oil level signal device, the magnetic induction synchronizing mechanism is installed on a sealing plate at the free end of the corrugated core body, and the integrated oil level signal device is arranged outside the oil conservator shell. Compared with a traditional structure, the oil level signal device is integrated, and the oil level signal device has the advantages of being compact in structure, more flexible in use range, more reliable in use performance and more convenient to install and replace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to transformer metal corrugated oil conservator manufacturing technical field, specifically, it is a kind of outer oil vertical metal corrugated oil conservator with integrated oil level signal wiring device. BACKGROUND

[0002] Traditional transformer metal corrugated oil conservator, oil level display, alarm signal, remote signal, signal conversion device, voltage conversion device are respectively independently installed, and are connected by cable.

[0003] In order to adapt to the requirement of smart substation of State Grid, more and more signals need to be output by transformer in recent years, such as alarm signal, remote 4-20mA signal, remote 485 signal, etc.; under this background, more and more modules need to be installed, which occupies a lot of space, so that some small oil conservators have no space to install these modules.

[0004] Most of the connection between magnetic flap and oil conservator is by bolt, and the installation is mostly by drilling threaded hole on the cylinder. In order to make the magnetic flap close to the internal magnet of the oil conservator to ensure the magnetic induction intensity, the outside of the cylinder is not convenient to weld the mounting seat, so the threaded hole is drilled on the cylinder, and then the connecting seat is welded inside the cylinder to prevent leakage. This way increases the number of welds and increases the risk of leakage.

[0005] In order to connect these modules, a large number of wiring is needed, which greatly increases the circuit damage caused by wiring error; and the wiring and installation are extremely complicated and inconvenient to operate.

[0006] Because there are a lot of wiring positions, it is easy to cause poor contact of contact position due to bumping during transportation of oil conservator.

[0007] Each module exists independently, and the materials used and the protection level used are different, and most of them do not consider extreme corrosion, in humid or corrosive gas environment, metal parts are easy to rust, which affects the service life.

[0008] As shown in Figure 1 The traditional metal corrugated oil conservator oil level signal wiring device is: the oil level signal is led out from the magnetic flap 1 to the junction box 4 of the cabinet foot 29 by cable, and the remote signal needs to pass through current conversion device 2 and voltage conversion device 3 in turn during the process of leading to the junction box 4 on the cabinet foot 29. The magnetic flap 1 is installed on the cylinder 30 of the outer oil vertical metal corrugated oil conservator by bolt, and the current conversion device 2 and the voltage conversion device 3 are installed on the bottom plate of the outer oil vertical metal corrugated oil conservator by bolt. Figures 2A-2CAs shown, the existing magnetic flip panel 1 consists of a magnetic flip panel body, a magnetic switch A5, and a reed switch magnetic strip 6. Magnetic switch A5 is responsible for outputting alarm signals, and reed switch magnetic strip 6 is responsible for outputting remote transmission signals. Both magnetic switch A5 and reed switch magnetic strip 6 are bolted to the outside of the magnetic flip panel body. During signal transmission, at least twenty wiring operations are required at the terminals, and the large number of exposed electrical components easily leads to water accumulation, corrosion, and potential hazards during transportation. Utility Model Content

[0009] In view of the above-mentioned wiring devices in traditional oil tanks, the purpose of this utility model is to provide an external oil vertical metal corrugated oil tank with an integrated oil level signal wiring device.

[0010] The objective of this utility model is achieved through the following technical solution:

[0011] This utility model includes an oil tank shell and a corrugated core located inside the oil tank shell. The upper end of the corrugated core is mounted on the oil tank shell, and the lower end of the corrugated core is a free end. The expansion and contraction direction of the corrugated core is vertical. Transformer oil enters the oil cavity formed by the interior of the oil tank shell and the exterior of the corrugated core. An integrated oil level signal wiring device is installed on the oil tank shell. The integrated oil level signal wiring device includes a magnetic flip plate assembly and an integrated circuit device. The magnetic flip plate assembly includes a magnetic flip plate body, a magnetic switch B, and a Hall sensor. The integrated circuit device includes a housing, an integrated circuit board, a waterproof connector, and a cover. The magnetic flip plate body has useful openings on it. The magnetic switch B and the Hall sensor are respectively embedded in their respective cavities, sealed with glue, and plugged with a sealing plug. The lower end of the magnetic flip plate body is connected to the housing. The housing is fixed to the bottom plate of the oil tank shell. The cover is connected to the bottom surface of the housing. The integrated circuit board is located between the cover and the housing and installed on the bottom surface of the housing. A waterproof connector is provided inside the housing. The cables of the magnetic switch B and the Hall sensor are led out through the wiring holes opened on the magnetic flip plate body, introduced through the waterproof connector, and connected to the integrated circuit board. The free end of the corrugated core is equipped with a magnetic synchronization mechanism that cooperates with the magnetic flip plate assembly.

[0012] Wherein: a waterproof cover is installed on the outer wall of the oil tank shell, and the upper end of the magnetic flip plate body is inserted into the waterproof cover.

[0013] Two circular cavities are symmetrically opened on both sides of the magnetic flip plate body along its length. The magnetic switch B and the Hall sensor are each embedded in one of the circular cavities. The magnetic switch B is cylindrical and can be moved in the cavity. Each cavity is filled with insulating sealant. Both ends of the magnetic flip plate body along its length are sealed with plugs.

[0014] The lower end side of the magnetic flap body is provided with a mounting hole A for connecting with the shell, and the back of the magnetic flap body is provided with a wire hole, and the cables of the magnetic switch B and the Hall sensor are led out from the wire hole.

[0015] The magnetic induction synchronization mechanism comprises a magnetic block box, a permanent magnet, a pulley and a synchronization plate, the permanent magnet is installed in the magnetic block box, the magnetic block box is fixed on the free end of the corrugated core body through the synchronization plate, and the two sides of the magnetic block box are respectively provided with the pulleys in rolling contact with the inner walls of the oil storage cabinet shell.

[0016] The top surface of the shell is provided with a mounting hole F for fixedly connecting with the bottom plate of the oil storage cabinet shell, the bottom surface of the shell is provided with a mounting hole B for fixedly connecting with the box cover, one side of the shell is provided with a slot, the lower end of the magnetic flap body is inserted into the slot, the waterproof joint is arranged between the slot and one side of the shell, the bottom plate of the slot is a decorative plate for shielding the connection position between the magnetic flap body and the shell, mounting holes E and D are respectively arranged on the slot wall of the slot and are used for fixedly connecting with the magnetic flap body and the decorative plate, and the other side of the shell is provided with a mounting hole C for mounting the cable joint.

[0017] The integrated circuit board is provided with a display screen, and the box cover is provided with a glass window at the position corresponding to the display screen.

[0018] The utility model discloses the advantages and positive effects are:

[0019] The utility model discloses through the application mature structure, makes the oil storage cabinet wiring device structure more reliable, installs more convenient, the performance is more reliable, uses more flexible.

[0020] 1. reliable structure: the utility model discloses the integral integration of the oil storage cabinet wiring device, avoids rain, condensation into the wiring box inside and wiring device inside through waterproof cover, sealing plug, waterproof joint etc. maximum limit, and reduces the electrical component in the circuit, makes the circuit structure more reliable.

[0021] 2. easy to install: the utility model discloses reducing the quantity of the module that needs to be installed, reduces the quantity of internal wiring, and the integral oil level signal device is assembled as a whole and then installed with the oil storage cabinet, so that the structure installation is more convenient.

[0022] 3. reliable performance: the shell material of the utility model is selected from aluminum alloy material with better corrosion resistance, and the shell is kept sealed through sealing gasket, sealing glue and other ways, reducing the influence of environmental corrosion on the internal circuit.

[0023] 4. flexible use: the utility model greatly reduces the installation space of the circuit module, so that more small oil storage cabinets can meet the demand of outputting various signals.

[0024] 5. The utility model uses the integrated circuit board to integrate the commonly used module, reduces the internal node and increases the universality.

[0025] 6. The utility model reduces the cable exposed outside, reduces the risk caused by the electrical element failure in the transportation and use process. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structural diagram of traditional metal corrugated oil tank and oil level signal wiring device;

[0027] Figure 2A It is the structural front view of magnetic flap in traditional oil level signal wiring device;

[0028] Figure 2B It is the right view of Figure 2A ;

[0029] Figure 2C It is the left view of Figure 2A ;

[0030] Figure 3A It is the overall structure schematic diagram of the utility model;

[0031] Figure 3B It is the partial close-up view of I in Figure 3A ;

[0032] Figure 4 It is the structural schematic diagram of integrated oil level signal device in Figure 3A ;

[0033] Figure 5A It is the structural front view of magnetic flap assembly in Figure 4 ;

[0034] Figure 5B It is the bottom view section of Figure 5A ;

[0035] Figure 5C It is the side view of Figure 5A ;

[0036] Figure 5D It is the back view of Figure 5A ;

[0037] Figure 6A It is the structural front view of integrated circuit device in Figure 4 ;

[0038] Figure 6B It is the bottom view of Figure 6A ;

[0039] Figure 6C It is the top view of Figure 6A ;

[0040] Figure 6D is a right view of Figure 6A ;

[0041] Figure 7 is a structural schematic view of a magnetic induction synchronization mechanism; Figure 3A

[0042] Wherein: 1 is a magnetic reed, 2 is a current conversion module, 3 is a voltage conversion module, 4 is a junction box, 5 is a magnetic switch A, 6 is a reed switch magnetic strip, 7 is a rain cover, 8 is an integrated oil level signal device, 9 is a magnetic induction synchronization mechanism, 10 is a corrugated core, 11 is an oil storage cabinet shell, 12 is a magnetic reed assembly, 13 is an integrated circuit device, 14 is a magnetic reed body, 15 is a magnetic switch B, 16 is a Hall sensor, 17 is a closed plug, 18 is a mounting hole A, 19 is a wiring hole, 20 is a shell, 21 is a mounting hole B, 22 is an integrated circuit board, 23 is a mounting hole C, 24 is a waterproof joint, 25 is a decorative plate, 26 is a mounting hole D, 27 is a mounting hole E, 28 is a cover, 29 is a cabinet foot, 30 is a barrel, 31 is a magnetic block box, 32 is a permanent magnet, 33 is a pulley, 34 is a synchronization plate, 35 is a mounting hole F, and 36 is a slot. DETAILED DESCRIPTION

[0043] The utility model will be further described in detail below with reference to the drawings.

[0044] As Figure 3A , Figure 3B and Figure 4 shown, the utility model includes oil storage cabinet shell 11 and the corrugated core 10 in the oil storage cabinet shell 11, the upper end of corrugated core 10 is installed on oil storage cabinet shell 11, the lower end of corrugated core 10 is free end, the expansion and contraction direction of corrugated core 10 is vertical direction, the inside of corrugated core 10 is the same breathing cavity as atmospheric pressure, and the oil cavity formed by the inside of oil storage cabinet shell 11 and the outside of corrugated core 10 is entered by transformer oil.

[0045] The oil storage cabinet shell 11 of the embodiment is provided with an integrated oil level signal wiring device 8, the integrated oil level signal wiring device 8 includes a magnetic reed assembly 12 and an integrated circuit device 13, the magnetic reed assembly 12 and the integrated circuit device 13 are well butted, the mounting hole A 18 at the lower end of the magnetic reed assembly 12 and the mounting hole E 27 of the integrated circuit device 13 are connected and fixed through rivets, and the effect of anti-shock and not easy to loosen is achieved.

[0046] As Figure 3A , Figure 3B , Figure 4 and Figures 5A-5D ​As shown, the magnetic flip panel assembly 12 in this embodiment includes a magnetic flip panel body 14, a magnetic switch B15, and a Hall sensor 16. The magnetic flip panel body 14 is integrally formed from aluminum alloy. Two circular cavities are symmetrically opened on both sides of the magnetic flip panel body 14 along its length. The magnetic switch B15 and the Hall sensor 16 are each embedded in one of the circular cavities. Each cavity is filled with insulating sealant. The two ends of the magnetic flip panel body 14 along its length are sealed with sealing plugs 17. Mounting holes A18 for connecting to the housing 20 are opened on both sides of the lower end of the magnetic flip panel body 14, and it is fixed to the housing 20 by rivets. A wiring hole 19 is opened on the back of the magnetic flip panel body 14, and the cables of the magnetic switch B15 and the Hall sensor 16 are led out through the wiring hole 19. The magnetic switch B15 is cylindrical, which facilitates movement in the circular cavity. The cable is directly integrated inside the magnetic switch B15, reducing manual contact points. In this embodiment, a Hall sensor 16 is used instead of a reed switch magnetic strip 6. The Hall sensor 16 is superior to the reed switch in terms of working frequency, adaptability, temperature range, processing cost, natural frequency, output signal stability, anti-interference ability and environmental adaptability. It is also smaller in size, reducing the overall volume of the magnetic flip assembly 12.

[0047] In this embodiment, a waterproof cover 7 is welded to the outer wall of the oil tank housing 11. The upper end of the magnetic flip plate body 14 is inserted into the waterproof cover 7. The waterproof cover 7 serves to limit and fix the integrated oil level signal device 8 and to provide waterproofing. When installing the integrated oil level signal device 8, the upper end is first inserted into the waterproof cover 7, and then it is fixed to the bottom plate of the oil tank housing 11 by bolts through the mounting hole at the lower end.

[0048] like Figure 3A , Figure 3B , Figure 4 , Figures 5A-5D and Figures 6A-6DAs shown, the integrated circuit device 13 of the embodiment includes a shell 20, an integrated circuit board 22, a waterproof joint 24, and a box cover 28. The shell 20 is fixed on the bottom plate of the oil tank shell 11. The box cover 28 is connected to the bottom surface of the shell 20. The integrated circuit board 22 is located between the box cover 28 and the shell 20 and is installed on the bottom surface of the shell 20. The waterproof joint 24 is arranged in the shell 20. The cable of the magnetic switch B15 and the Hall sensor 16 is led out from the wire hole 19 arranged on the magnetic flap body 14, introduced into the waterproof joint 24, and connected to the integrated circuit board 22. The shell 20 and the box cover 28 of the embodiment are integrally formed by an aluminum alloy material. The top surface of the shell 20 is provided with a mounting hole F35 for fixing with the bottom plate of the oil tank shell 11. The bottom surface of the shell 20 is provided with a mounting hole B21 for fixing with the box cover 28. One side of the shell 20 is provided with a slot 36. The lower end of the magnetic flap body 14 is inserted into the slot 36. The waterproof joint 24 is arranged between the slot 36 and one side of the shell 20. The bottom plate of the slot 36 is a decorative plate 25 for shielding the connection position between the magnetic flap body 14 and the shell 20. The slot wall of the slot 36 is respectively provided with a mounting hole E27 for fixing with the magnetic flap body 14 and a mounting hole D26 for fixing with the decorative plate 25. The other side of the shell 20 is provided with a mounting hole C23 for mounting the cable joint. According to the needs, a display screen can be additionally arranged on the integrated circuit board 22. A glass window can be arranged on the box cover 28 at a position corresponding to the display screen. The shell 20 is provided with the mounting hole C23 for mounting the cable joint. Different specifications of the cable joint can be installed according to the needs. The integrated circuit board 22 of the embodiment is a prior art. The alarm signal input, the alarm signal output, the sensor signal input, the current conversion function, the voltage conversion function, the remote 4-20mA signal output, the remote 485 signal output, and the 220V voltage input are integrated together.

[0049] The free end of the corrugated core body 10 of the embodiment is provided with a magnetic induction synchronization mechanism 9 matched with the magnetic flap assembly 12. The magnetic induction synchronization mechanism 9 includes a magnetic block box 31, a permanent magnet 32, a pulley 33, and a synchronization plate 34. The permanent magnet 32 is installed in the magnetic block box 31. The magnetic block box 31 is fixed to the free end of the corrugated core body 10 through the synchronization plate 34. The pulleys 33 are respectively arranged on the two sides of the magnetic block box 31 and rollingly contact the inner wall of the oil tank shell 11. The magnetic induction synchronization mechanism 9 moves up and down with the expansion and contraction of the corrugated core body 10. Through the cooperation of the permanent magnet 32, the magnetic switch B15, and the Hall sensor 16, the magnetic flap assembly 12 displays the oil level. This is a prior art and will not be described here.

[0050] The utility model discloses an oil level signal wiring device of traditional outer oil vertical metal corrugated oil tank is optimized and designs, uses integrated circuit board to replace multiple circuit modules, makes the oil level signal wiring device structure of outer oil vertical metal corrugated oil tank more reliable, installs more convenient, performance is more reliable, uses more nimblely, prolongs the service life of oil tank.

Claims

1. An external oil vertical metal corrugated oil conservator with integrated oil level signal wiring device, comprising an oil conservator shell (11) and a corrugated core (10) located in the oil conservator shell (11), the upper end of the corrugated core (10) is mounted on the oil conservator shell (11), the lower end of the corrugated core (10) is a free end, the expansion and contraction direction of the corrugated core (10) is vertical, and transformer oil enters the oil cavity formed between the inside of the oil conservator shell (11) and the outside of the corrugated core (10); characterized in that: The oil tank shell (11) is provided with an integrated oil level signal wiring device (8), which comprises a magnetic flap assembly (12) and an integrated circuit device (13), the magnetic flap assembly (12) comprises a magnetic flap body (14), a magnetic switch B (15) and a Hall sensor (16), the integrated circuit device (13) comprises a shell (20), an integrated circuit board (22), a waterproof joint (24) and a box cover (28), the magnetic flap body (14) is provided with cavities for accommodating the magnetic switch B (15) and the Hall sensor (16) respectively, the magnetic switch B (15) and the Hall sensor (16) are embedded in the cavities respectively, and the cavities are filled with glue for sealing and closed by a sealing plug (17), the lower end of the magnetic flap body (14) is connected with the shell (20), the shell (20) is fixed on the bottom plate of the oil tank shell (11), the box cover (28) is connected with the bottom surface of the shell (20), the integrated circuit board (22) is located between the box cover (28) and the shell (20) and is fixed on the bottom surface of the shell (20), the waterproof joint (24) is arranged in the shell (20), and the cables of the magnetic switch B (15) and the Hall sensor (16) are led out from the wire holes (19) of the magnetic flap body (14) and then led into the integrated circuit board (22) through the waterproof joint (24); the free end of the corrugated core (10) is provided with a magnetic induction synchronization mechanism (9) matched with the magnetic flap assembly (12).

2. The elevated metal bellows tank with integral oil level signal wiring device of claim 1, wherein: The outer side wall of the oil tank shell (11) is provided with a waterproof cover (7), and the upper end of the magnetic flap body (14) is inserted into the waterproof cover (7).

3. The elevated metal bellows tank with integral oil level signal wiring device of claim 1, wherein: Two circular cavities are symmetrically arranged on the length direction of the magnetic flap body (14), the magnetic switch B (15) and the Hall sensor (16) are respectively embedded in one of the circular cavities, the magnetic switch B (15) is in a cylindrical shape for moving in the cavity, and each cavity is filled with insulating sealing glue, and the two ends of the magnetic flap body (14) are respectively closed by the sealing plugs (17).

4. The elevated metal bellows tank with integral oil level signal wiring device of claim 1, wherein: The lower end side of the magnetic flap body (14) is provided with a mounting hole A (18) for connecting with the shell (20), and the back surface of the magnetic flap body (14) is provided with a wire hole (19), and the cables of the magnetic switch B (15) and the Hall sensor (16) are led out from the wire hole (19).

5. The elevated metal bellows tank with integral oil level signal wiring device of claim 1, wherein: The magnetic induction synchronization mechanism (9) comprises a magnetic block box (31), a permanent magnet (32), a pulley (33) and a synchronization plate (34), the permanent magnet (32) is arranged in the magnetic block box (31), the magnetic block box (31) is fixed on the free end of the corrugated core (10) through the synchronization plate (34), and the two sides of the magnetic block box (31) are respectively provided with the pulleys (33) in rolling contact with the inner walls of the oil tank shell (11).

6. The elevated metal bellows tank with integral oil level signal wiring device of claim 1, wherein: The top surface of the shell (20) is provided with a mounting hole F (35) for being fixed with the bottom plate of the oil storage tank shell (11), the bottom surface of the shell (20) is provided with a mounting hole B (21) for being fixed with the box cover (28), one side of the shell (20) is provided with a slot (36), the lower end of the magnetic flap body (14) is inserted into the slot (36), the waterproof joint (24) is arranged between the slot (36) and one side of the shell (20), the bottom plate of the slot (36) is a decorative plate (25) for shielding the intermediate connecting position of the magnetic flap body (14) and the shell (20), the slot wall of the slot (36) is respectively provided with a mounting hole E (27) for being fixed with the magnetic flap body (14) and a mounting hole D (26) for being fixed with the decorative plate (25), the other side of the shell (20) is provided with a mounting hole C (23) for mounting a cable joint.

7. The elevated metal bellows tank with integral oil level signal wiring device of claim 1, wherein: The integrated circuit board (22) is provided with a display screen, and the box cover (28) is provided with a glass window at a position corresponding to the display screen.

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