Oil-immersed current transformer observation window and dismounting tool thereof

Abstract

The utility model relates to the technical field of oil-immersed current transformers, in particular to an oil-immersed current transformer observation window and a dismounting tool thereof, the oil-immersed current transformer observation window comprises an observation window and a dismounting frame, the observation window comprises a fixed shell, the fixed shell is detachably connected with a movable shell, the movable shell is fixedly connected with safety glass, and the dismounting frame is fixedly connected with the movable shell. Strong magnets a are arranged at all corners of the fixed shell, and strong magnets b corresponding to the strong magnets a are fixedly connected to the movable shell. The fixed shell is connected with the mutual inductor through the screws, then the movable shell is fixed to the fixed shell through the strong magnet a and the strong magnet b, the safety glass is clamped by the strong magnet a and the strong magnet b, the whole structure is easy to install, only the movable shell needs to be replaced during replacement, the replacement cost is reduced, and the replacement efficiency is improved. And the shell can be quickly moved by using a special dismounting tool, so that the problem of tedious dismounting caused by the need of special equipment for dismounting because the observation window is too high away from the ground is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed current transformers, in particular to an oil-immersed current transformer observation window and a disassembly tool thereof. Background Art

[0002] Outdoor oil-immersed current transformer is a sensor used to measure high current in power systems. It is usually composed of an iron core and a coil, and is immersed in insulating oil to protect electrical components. The insulating oil plays the role of insulation, cooling and corrosion prevention. Too high or too low oil level will affect its performance, so the oil level needs to be checked regularly.

[0003] First, the height of the observation window is 4-5m from the ground. Secondly, the glass of the observation window is plexiglass, which ages over time, causing the glass to become blurred, making it difficult to see the oil level. Therefore, the observation window must be replaced frequently on site, and the existing observation window and cover need to be replaced as a whole, which invisibly increases the maintenance cost. In addition, since the observation window is high from the ground, special lifting equipment is required for lifting, which makes the disassembly process cumbersome. Utility Model Content

[0004] The utility model aims to provide an oil-immersed current transformer observation window and a disassembly tool thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An oil-immersed current transformer observation window and a disassembly tool thereof, comprising an observation window and a disassembly frame, wherein the observation window comprises a fixed shell, a movable shell is detachably connected to the fixed shell, a safety glass is fixedly connected to the movable shell, strong magnets a are arranged at each corner of the fixed shell, a strong magnet b corresponding to the strong magnet a is fixedly connected to the movable shell, and a groove corresponding to the safety glass is provided on the fixed shell;

[0007] The disassembly frame includes a fixed cover, a first mounting frame is fixedly connected to the bottom of the fixed cover, a fixed seat is rotatably connected to the first mounting frame, a threaded rod is fixedly connected to the top of the fixed seat, a push plate is slidably connected to the fixed cover, the push plate and the threaded rod are threadedly connected, and an insulating rod is fixedly connected to the bottom of the fixed cover

[0008] Preferably, an O-ring is provided in the groove.

[0009] Preferably, a slot is provided on the fixed cover, a lifting sleeve is slidably connected to the insulating rod, a second mounting frame is fixedly connected to the lifting sleeve, and an insert block is fixedly connected to the second mounting frame.

[0010] Preferably, a positioning groove is provided on the fixed shell and located at the strong magnet a.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model connects the fixed shell with the mutual inductor by screws, and then fixes the movable shell on the fixed shell by strong magnets a and b, and the two clamp the safety glass. The whole structure is simple to install. When replacing, only the movable shell needs to be replaced, which reduces the replacement cost. The shell can be quickly moved by using a special disassembly tool, which avoids the problem of cumbersome disassembly and assembly caused by the observation window being too high from the ground and requiring special equipment for disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the observation window of the utility model;

[0015] Figure 3 This is an exploded view of the structure of the observation window of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the mobile housing of the utility model;

[0017] Figure 5 It is a cross-sectional view of the mechanism of the disassembly rack of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0022] See also Figure 1 - Figure 5 As shown, a technical solution provided by the utility model:

[0023] An oil-immersed current transformer observation window and a disassembly tool thereof, comprising an observation window 1 and a disassembly frame 2, wherein the observation window 1 comprises a fixed shell 111, a movable shell 121 is detachably connected to the fixed shell 111, a safety glass 122 is fixedly connected to the movable shell 121, strong magnets a114 are arranged at each corner of the fixed shell 111, a strong magnet b123 corresponding to the strong magnet a114 is fixedly connected to the movable shell 121, and a groove 112 corresponding to the safety glass 122 is provided on the fixed shell 111; the fixed shell 111 is connected to the transformer by screws, and then the movable shell 121 is fixed to the fixed shell 111 by the strong magnets a114 and b123, and the two clamp the safety glass 122, the whole structure is easy to install, and when replacing, only the movable shell 121 needs to be replaced, thereby reducing the replacement cost.

[0024] The disassembly frame 2 includes a fixed cover 211, the bottom of which is fixedly connected to a first mounting frame 212, the first mounting frame 212 is rotatably connected to a fixed seat 213, the top of the fixed seat 213 is fixedly connected to a threaded rod 215, the fixed cover 211 is slidably connected to a push plate 214, the push plate 214 and the threaded rod 215 are threadedly connected, and the bottom end of the fixed cover 211 is fixedly connected to an insulating rod 216.

[0025] When the observation window 1 needs to be disassembled, the fixed cover 211 is buckled on the movable shell 121 through the insulating rod 216. The rotating insulating rod 216 drives the fixed seat 213 to rotate, and the threaded rod 215 on the fixed seat 213 also rotates. Since the push plate 214 and the threaded rod 215 are threadedly connected and slidably connected with the fixed cover 211, when the threaded rod 215 rotates, the push plate 214 slides upward, supports and squeezes the movable shell 121 to fix it, and then bends it outward to remove it. When the insulating rod 216 is reversed, the push plate 214 shrinks into the fixed cover 211 to loosen the movable shell 213. The shell 121 can be quickly moved using a special disassembly tool, avoiding the problem of cumbersome disassembly and assembly caused by the observation window 1 being too high from the ground and requiring special equipment for disassembly.

[0026] It should be noted that an O-ring 113 is disposed in the groove 112 , and a positioning groove is provided on the fixed housing 111 at the location of the strong magnet a114 .

[0027] A slot 221 is provided on the fixed cover 211, and a lifting sleeve 224 is slidably connected to the insulating rod 216. A second mounting bracket 222 is fixedly connected to the lifting sleeve 224, and an insert block 223 is fixedly connected to the second mounting bracket 222. The lifting sleeve 224 can be pushed upward to insert the insert block 223 between the fixed shell 111 and the movable shell 121. The inclined surface of the insert block 223 is used to squeeze the two to separate them, which can avoid the problem that the top connection of the insulating rod 216 is weak, and the top of the insulating rod 216 may be broken when the movable shell 121 is pried outward.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An oil-immersed current transformer observation window and a disassembly tool thereof, comprising an observation window (1) and a disassembly frame (2), characterized in that: The observation window (1) comprises a fixed shell (111), a movable shell (121) is detachably connected to the fixed shell (111), a safety glass (122) is fixedly connected to the movable shell (121), each corner of the fixed shell (111) is provided with a strong magnet a (114), a strong magnet b (123) corresponding to the strong magnet a (114) is fixedly connected to the movable shell (121), and a groove (112) corresponding to the safety glass (122) is provided on the fixed shell (111); The disassembly frame (2) comprises a fixed cover (211), the bottom of the fixed cover (211) is fixedly connected to a first mounting frame (212), the first mounting frame (212) is rotatably connected to a fixed seat (213), the top of the fixed seat (213) is fixedly connected to a threaded rod (215), the fixed cover (211) is slidably connected to a push plate (214), the push plate (214) and the threaded rod (215) are threadedly connected, and the bottom end of the fixed cover (211) is fixedly connected to an insulating rod (216).

2. The oil-immersed current transformer observation window and the disassembly tool thereof according to claim 1, characterized in that: An O-type sealing ring (113) is arranged in the groove (112).

3. The oil-immersed current transformer observation window and the disassembly tool thereof according to claim 1, characterized in that: The fixed cover (211) is provided with a slot (221), the insulating rod (216) is slidably connected with a lifting sleeve (224), the lifting sleeve (224) is fixedly connected with a second mounting frame (222), and the second mounting frame (222) is fixedly connected with an insert block (223).

4. The oil-immersed current transformer observation window and the disassembly tool thereof according to claim 1, characterized in that: A positioning groove is provided on the fixed housing (111) and is located at the strong magnet a (114).

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