Power transformer capable of preventing oil leakage

Abstract

The utility model discloses a power transformer capable of preventing oil leakage, which belongs to the field of power transformers and comprises a power transformer oil tank, an oil conservator and a protection mechanism, and an upper protection shell and a lower protection shell are respectively combined at the joint of a connecting pipe and a liquid outlet pipe and the joint of the connecting pipe and a liquid inlet pipe. During combination, the positioning blocks are inserted into the positioning grooves, and after the vertical parts of the L-shaped connecting plates are inserted into the connecting sockets, the rotary knobs are rotated to drive the two-way screws to rotate through the rotating rods, so that the symmetrical connecting blocks oppositely move in the movable openings along the two-way screws through the screw holes, and the movable blocks are driven to synchronously move in the transverse openings; the clamping block is inserted into the through hole and penetrates through the clamping hole, so that the upper protective shell and the lower protective shell can be combined, connected and fixed together, and the connecting part between the connecting pipe and the liquid outlet pipe and the connecting part between the connecting pipe and the liquid inlet pipe are shielded and protected in a shell cavity formed by the upper protective shell and the lower protective shell; therefore, the outer protection and oil seepage prevention effects can be achieved on the connecting position.

Description

Technical Field

[0001] The utility model relates to the field of power transformers, in particular to a power transformer capable of preventing oil leakage. Background Art

[0002] A power transformer is a static electrical device that is used to convert a certain value of AC voltage (current) into another or several different values ​​of voltage (current) with the same frequency. It realizes the transmission of electric energy based on the principle of electromagnetic induction. Transformers can be divided into power transformers, test transformers, instrument transformers and special-purpose transformers according to their uses: power transformers are necessary equipment for power transmission and distribution, and power distribution to power users; test transformers are equipment for withstand voltage (boost) tests on electrical equipment; instrument transformers are used for electrical measurement and relay protection of distribution systems (PT, CT); special-purpose transformers include smelting furnace transformers, welding transformers, electrolysis rectifier transformers, small voltage regulating transformers, etc.

[0003] In the prior art, the oil tank and the oil pillow of the power transformer are generally connected together through a connecting pipe. When there is no oil in the oil tank, transformer oil can be added to the oil tank through the oil pillow. The connection between the connecting pipe and the oil tank and the oil pillow of the power transformer is usually sealed by installing a sealing ring. However, due to the lack of protective measures at the connection, after long-term use, due to factors such as wind, sun, rain, etc. in the external environment, as well as the high temperature generated by the power transformer during use, the sealing ring at the connection between the connecting pipe and the oil tank and the oil pillow of the power transformer will age and be damaged, resulting in the sealing ring losing its sealing effect, causing oil leakage at the connection when the oil pillow is filling oil into the oil tank of the power transformer, thereby posing a safety hazard to the use of the power transformer and affecting its normal use. Utility Model Content

[0004] The main purpose of the utility model is to provide a power transformer which can prevent oil leakage and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The invention relates to an oil-leakage-proof power transformer, comprising an oil tank and an oil pillow of the power transformer, wherein a liquid inlet pipe is fixedly connected to the right side of the oil tank of the power transformer, and a liquid outlet pipe is fixedly connected to the bottom surface of the oil pillow, the liquid inlet pipe and the liquid outlet pipe are fixedly connected by a connecting pipe, and a protective mechanism is arranged outside the connection between the connecting pipe and the liquid inlet pipe and the liquid outlet pipe, and the protective mechanism comprises an upper protective shell, a lower protective shell, a side plate, a fixed block, a bidirectional screw, a movable block and a clamping block, the upper protective shell is positioned and connected to the top surface of the lower protective shell through a positioning block on the bottom surface, and the front and rear outer walls of the lower protective shell are respectively fixedly connected with side plates, symmetrical fixed blocks are fixedly connected to the outer side walls of the side plates, and the bidirectional screw is movably connected between the fixed blocks through rotating rods at both ends, the two movable blocks are movably connected in a transverse opening opened on the top surface of the side plates, and the movable block is movably connected to the bidirectional screw through a connecting block on the outer side wall, and the clamping block is fixedly connected to the outer side wall of the movable block.

[0007] Preferably, a group of left-right symmetrical positioning blocks are fixedly installed on the front and rear sides of the bottom of the upper protective shell, and a group of left-right symmetrical L-shaped connecting plates are fixedly installed on the front and rear sides of the outer wall of the upper protective shell, and a bayonet is opened on the side wall of the vertical part of the L-shaped connecting plate.

[0008] Preferably, a positioning groove corresponding to the positioning block is formed on the top surface of the lower protective shell, and the positioning block is inserted and installed in the positioning groove.

[0009] Preferably, side panels are fixedly installed on the front and rear side walls of the lower protective shell, and a transverse opening is provided on the top surface of the side panel. Connecting sockets are also provided on the top surface of the side panel and on the left and right sides of the transverse opening, and through openings corresponding to the bayonet are provided on the inner side walls of the connecting socket, and a movable opening connected to the transverse opening is also provided on the outer wall of the side panel.

[0010] Preferably, a group of left-right symmetrical fixing blocks are fixedly installed on the outer side wall of the side panel, and a rotating hole is opened on the side wall of the fixing block, and rotating rods are fixedly installed on the left and right ends of the bidirectional screw respectively, and the rotating rods are movably installed in the rotating holes, and a knob is also fixedly installed on the outer side end of the rotating rod at the right end.

[0011] Preferably, the connecting block is movably installed in the movable opening, and a screw hole is opened on the side wall of the connecting block and is threadedly connected with the bidirectional screw through the screw hole. The movable block is movably installed in the transverse opening and fixedly installed on the inner side wall of the connecting block, and a clamping block is fixedly installed on the outer side wall of the movable block. The clamping block is inserted in the through opening and passes through the clamping opening.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, a protective mechanism is provided, and the upper protective shell and the lower protective shell are respectively merged at the connection between the connecting pipe and the liquid outlet pipe and the connecting pipe and the liquid inlet pipe. When merging, the positioning block is inserted into the positioning groove, and the vertical part of the L-shaped connecting plate is inserted into the connecting socket. The rotating knob drives the bidirectional screw to rotate through the rotating rod, so that the symmetrical connecting blocks make opposite movements in the movable port along the bidirectional screw through the screw hole, and drive the movable block to move synchronously in the transverse port until the block is inserted into the through port and passes through the bayonet. Therefore, the upper protective shell and the lower protective shell can be merged and connected and fixed together, and the connection between the connecting pipe and the liquid outlet pipe and the connection pipe and the liquid inlet pipe is partially shielded and protected in the shell cavity formed by the upper protective shell and the lower protective shell, so that the connection can be effectively protected from oil leakage, and the sealing ring at the connection position is prevented from aging and losing the sealing effect due to external factors after long-term use, thereby preventing the oil tank and the oil pillow of the power transformer from leaking oil at the connection position after being connected through the connecting pipe, so as to ensure the normal and safe use of the power transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the protection mechanism of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the upper protective shell of the utility model;

[0017] Figure 4 It is a schematic diagram of the structural disassembly of the lower protective shell of the utility model.

[0018] In the figure: 1. oil tank of power transformer; 2. oil pillow; 3. liquid inlet pipe; 4. liquid outlet pipe; 5. connecting pipe; 6. protective mechanism; 7. upper protective shell; 8. positioning block; 9. L-shaped connecting plate; 10. bayonet; 11. lower protective shell; 12. positioning groove; 13. side plate; 14. transverse opening; 15. connecting socket; 16. through opening; 17. movable opening; 18. fixing block; 19. rotating hole; 20. bidirectional screw; 21. rotating rod; 22. knob; 23. connecting block; 24. screw hole; 25. movable block; 26. clamping block. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1 - Figure 4As shown, in this embodiment, in order to prevent the problem of oil leakage at the connection part of the power transformer oil tank 1 and the oil pillow 2 through the connecting pipe 5 during use, the protective mechanism 6 is used to ensure the normal and safe use of the power transformer, and the specific use principle of the protective mechanism 6 in conjunction with the power transformer is as follows:

[0021] The upper protective shell 7 and the lower protective shell 11 are combined together at the outside of the connection part of the connecting pipe 5, the outlet pipe 4 on the power transformer oil tank 1, and the inlet pipe 3 on the oil pillow 2. After the combination, the positioning block 8 installed on the bottom surface of the upper protective shell 7 is inserted into the positioning groove 12 opened on the top surface of the lower protective shell 11, and the vertical part of the L-shaped connecting plate 9 installed on the front and rear sides of the upper protective shell 7 is inserted into the connecting socket 15 opened on the top surface of the side plate 13 installed on the front and rear sides of the lower protective shell 11. Then, the knob 22 on one side of the side plate 13 is rotated in sequence. The knob 22 will drive the rotating rods 21 installed at both ends of the bidirectional screw 20 to rotate in the rotating holes 19 opened on the side walls of the symmetrical fixing blocks 18 installed on the outer side walls of the side plates 13, and the rotating rods 21 will drive the bidirectional screw 20 to rotate between the symmetrical fixing blocks 18. At this time, because the two connecting blocks 23 are respectively threadedly connected to the bidirectional screw 20 through the screw holes 24 opened on the side walls, the two connecting blocks 23 will move along the bidirectional screw 20 through the screw holes 24 in the movable openings 17 opened on the outer side walls of the side plates 13. The movable block 25 installed on the inner side is moved in the horizontal opening 14 opened on the top surface of the side plate 13, until the block 26 installed on the outer wall of the movable block 25 is inserted into the through opening 16 opened on the inner side walls of the connecting socket 15, and passes through the bayonet 10 opened on the vertical side wall of the L-shaped connecting plate 9 inserted in the connecting socket 15, until the knob 22 can no longer be rotated, thereby connecting and fixing the upper protective shell 7 and the lower protective shell 11 together, and connecting the connecting pipe 5 and the liquid inlet pipe 3 with The connection part between the connecting pipe 5 and the liquid outlet pipe 4 is covered in the shell cavity formed by the combination of the upper protective shell 7 and the lower protective shell 11, so that the connection part can be effectively protected, so that during the use of the power transformer, the sealing ring at the connection part between the connecting pipe 5 and the liquid inlet pipe 3 and the connecting pipe 5 and the liquid outlet pipe 4 can be prevented from aging due to external factors, which may affect the sealing effect, and oil leakage can be prevented from occurring at the connection part when the power transformer is in use, so as to ensure the normal and safe use of the power transformer.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, various improvements may be made to the present invention and its components may be replaced by equivalents, or some of its technical features may be replaced by equivalents without departing from the scope of the present invention. All that is within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil-leakage-proof power transformer, comprising a power transformer oil tank (1) and an oil pillow (2), wherein a liquid inlet pipe (3) is fixedly connected to the right side of the power transformer oil tank (1), and a liquid outlet pipe (4) is fixedly connected to the bottom surface of the oil pillow (2), and the liquid inlet pipe (3) and the liquid outlet pipe (4) are fixedly connected via a connecting pipe (5), characterized in that: A protective mechanism (6) is provided outside the connection between the connecting pipe (5) and the liquid inlet pipe (3) and the liquid outlet pipe (4), and the protective mechanism (6) comprises an upper protective shell (7), a lower protective shell (11), a side plate (13), a fixed block (18), a bidirectional screw (20), a movable block (25) and a clamping block (26), the upper protective shell (7) is positioned and connected to the top surface of the lower protective shell (11) through a positioning block (8) on the bottom surface, and the outer walls of the front and rear sides of the lower protective shell (11) are respectively fixedly connected to the side The side plate (13) is provided with a symmetrical fixed block (18) fixedly connected to the outer side wall of the side plate (13), and a bidirectional screw (20) is movably connected between the fixed blocks (18) through rotating rods (21) at both ends, and two movable blocks (25) are movably connected in a transverse opening (14) opened on the top surface of the side plate (13), and the movable block (25) is movably connected to the bidirectional screw (20) through a connecting block (23) on the outer side wall, and the clamping block (26) is fixedly connected to the outer side wall of the movable block (25).

2. The oil-leakage-proof power transformer according to claim 1, characterized in that: A group of left-right symmetrical positioning blocks (8) are fixedly mounted on the front and rear sides of the bottom of the upper protective shell (7), and a group of left-right symmetrical L-shaped connecting plates (9) are fixedly mounted on the front and rear sides of the outer wall of the upper protective shell (7), and a bayonet (10) is provided on the side wall of the vertical portion of the L-shaped connecting plate (9).

3. The oil-leakage-proof power transformer according to claim 2, characterized in that: A positioning groove (12) corresponding to the positioning block (8) is provided on the top surface of the lower protective shell (11), and the positioning block (8) is inserted and installed in the positioning groove (12).

4. The oil-leakage-proof power transformer according to claim 3, characterized in that: Side panels (13) are fixedly mounted on the front and rear side walls of the lower protective shell (11), and a transverse opening (14) is provided on the top surface of the side panel (13). Connecting sockets (15) are provided on the top surface of the side panel (13) and on the left and right sides of the transverse opening (14), and through openings (16) corresponding to the bayonet (10) are provided on the inner side walls of the connecting socket (15). A movable opening (17) communicating with the transverse opening (14) is provided on the outer side wall of the side panel (13).

5. The oil-leakage-proof power transformer according to claim 4, characterized in that: A group of left-right symmetrical fixing blocks (18) are fixedly mounted on the outer side wall of the side plate (13), and a rotating hole (19) is opened on the side wall of the fixing block (18). The left and right ends of the bidirectional screw (20) are respectively fixedly mounted with rotating rods (21), and the rotating rods (21) are movably mounted in the rotating holes (19). A knob (22) is also fixedly mounted on the outer side end of the rotating rod (21) at the right end.

6. The oil-leakage-proof power transformer according to claim 5, characterized in that: The connecting block (23) is movably mounted in the movable opening (17), and a screw hole (24) is provided on the side wall of the connecting block (23) and is threadedly connected to the bidirectional screw rod (20) through the screw hole (24). The movable block (25) is movably mounted in the transverse opening (14) and fixedly mounted on the inner side wall of the connecting block (23), and a clamping block (26) is fixedly mounted on the outer side wall of the movable block (25), and the clamping block (26) is inserted and mounted in the through opening (16) and passes through the clamping opening (10).

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