A waterproof sleeve for an opening surface of an open-close mutual inductor

Abstract

The utility model provides a kind of waterproof sleeve of opening and closing mutual inductor opening surface, comprising: upper half annular shell, lower half annular shell, waterproof sleeve and sealing mechanism, lower half annular shell is installed in the bottom of upper half annular shell, waterproof sleeve is sleeved in the outside of lower half annular shell, sealing mechanism is arranged on lower half annular shell, sealing mechanism includes fixed sleeve, hinge, pressing plate and waterproof sheet, fixed sleeve is sleeved on lower half annular shell, hinge is installed in the outer wall of fixed sleeve, pressing plate is fixed in the inner wall of waterproof sleeve, waterproof groove is set up in fixed sleeve, waterproof sheet is installed in the inner wall of fixed sleeve.The utility model embodiment of a kind of waterproof sleeve of opening and closing mutual inductor opening surface, effectively blocks rainwater and moisture invasion by sealing mechanism and multilayer protection design, improves the operation reliability of opening and closing mutual inductor in humid environment, reduces the precision decline risk caused by iron core damp.

Description

Technical Field

[0001] This utility model relates to the technical field of opening and closing current transformers, and in particular to a waterproof sleeve for the opening surface of an opening and closing current transformer. Background Technology

[0002] A switching current transformer is a special type of current transformer that can be installed, disassembled, or repaired without disconnecting the conductor being tested. Because it does not require disconnecting the power supply or disassembling the busbars during installation, the magnetic circuit of the current transformer can be directly opened, the busbar can be passed through the through hole, and then the magnetic circuit can be closed. This avoids power outages and the need for a large investment of manpower and resources. However, the magnetic circuit of the switching current transformer is cut open, and the iron core is directly exposed to the air. When used in outdoor or indoor humid environments, the cross-section of the iron core is very susceptible to moisture and rust. This will lead to a decrease in the transformation accuracy of the current transformer, a reduction in stability, or even failure to work properly. Therefore, a waterproof sleeve is required to protect the cross-section of the iron core.

[0003] Currently, most traditional waterproof sleeves use a single sealing ring or gasket structure, which achieves sealing through compression when the shell is fastened. However, their protective performance is limited. For example, some waterproof solutions only set a single sealing ring on the shell mating surface. Although it can block a small amount of moisture, it cannot cope with the direct scouring of outdoor rainwater. Rainwater can easily seep in through the joint between the transformer and the cable, or seep in through the gaps on the opening surface, eventually causing the internal iron core to become damp and rust, and the coil to short-circuit. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0005] Therefore, one objective of this utility model is to provide a waterproof sleeve for the opening surface of an openable transformer. Through a sealing mechanism and a multi-layer protective design, it effectively blocks the intrusion of rainwater and moisture. The waterproof groove and sealing ring on the fixed sleeve constitute the first layer of protection. The waterproof sheet and pressure plate in the sealing mechanism cooperate to form the second layer of waterproof barrier, ensuring that rainwater cannot penetrate along the gaps in the shell.

[0006] To achieve the above objectives, the first aspect of this utility model proposes a waterproof sleeve for the opening surface of an openable transformer, comprising: an upper semi-annular shell, a lower semi-annular shell, a waterproof sleeve, and a sealing mechanism. The lower semi-annular shell is installed at the bottom of the upper semi-annular shell, the waterproof sleeve is fitted over the outside of the lower semi-annular shell, and the sealing mechanism is disposed on the lower semi-annular shell. The sealing mechanism includes a fixing sleeve, a hinge, a pressure plate, and a waterproof sheet. The fixing sleeve is fitted over the lower semi-annular shell, the hinge is installed on the outer wall of the fixing sleeve, the pressure plate is fixed on the inner wall of the waterproof sleeve, a waterproof groove is provided on the fixing sleeve, and the waterproof sheet is installed on the inner wall of the fixing sleeve.

[0007] In addition, the waterproof sleeve for the opening surface of the current transformer proposed above may also have the following additional technical features: Specifically, the outer wall of the upper semi-annular shell is provided with an installation mechanism, which includes a fixed shell, a fixed post, a fixed rod, a fixed ball, and a locking ball. The fixed shell is fixed to the outer wall of the upper semi-annular shell, the fixed post is slidably installed on the inner wall of the fixed shell, the fixed rod is threadedly connected to the inside of the fixed post, the fixed ball is fixed to the bottom wall of the fixed rod, and the locking balls are respectively installed inside the fixed post. The outer wall of the fixed post is provided with a fixing hole.

[0008] Specifically, a dustproof mesh is installed inside the fixed shell, and a sealing ring is installed on the inner wall of the waterproof groove.

[0009] Specifically, the inner wall of the waterproof sleeve is provided with a fixing component, which includes a spring and a limiting block. The inner wall of the waterproof sleeve has a fixing groove, the spring is installed inside the fixing groove, and the limiting block is fixed to the other end of the spring.

[0010] Specifically, soft washers are installed on the inner wall of the fixing column.

[0011] Specifically, the upper semi-circular outer shell is externally threaded with fixing bolts, and the bottom of the lower semi-circular outer shell is fitted with a fixing block.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The waterproof sleeve for the opening surface of the current transformer of the present invention effectively blocks the intrusion of rainwater and moisture through a sealing mechanism and multi-layer protection design. The waterproof groove and sealing ring on the fixed sleeve constitute the first layer of protection. The waterproof sheet and pressure plate in the sealing mechanism cooperate to form the second layer of waterproof barrier, ensuring that rainwater cannot penetrate along the gaps in the shell. At the same time, the fixed ball and locking ball in the installation mechanism achieve adaptive adjustment through elastic compression, which can not only compensate for processing errors, but also enhance the sealing pressure between the shells, improve the operational reliability of the current transformer in a humid environment, and reduce the risk of accuracy reduction caused by moisture in the iron core.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of a waterproof sleeve structure for the opening surface of an openable current transformer according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a sealing mechanism for a waterproof sleeve on the opening surface of an openable current transformer according to an embodiment of the present invention. Figure 3This is a schematic diagram of the structure of a waterproof sleeve fixing column and a fixing shell for the opening surface of an opening and closing current transformer according to an embodiment of the present invention. Figure 4 This is a schematic diagram of a waterproof sleeve installation mechanism for the opening surface of an openable current transformer according to an embodiment of the present invention. Figure 5 A waterproof sleeve for the opening surface of an opening and closing current transformer according to an embodiment of the present invention. Figure 2 Enlarged structural diagram at point A in the middle; Figure 6 A waterproof sleeve for the opening surface of an opening and closing current transformer according to an embodiment of the present invention. Figure 2 Enlarged structural diagram at point B.

[0015] Reference numerals: 1. Upper semi-circular outer shell; 2. Lower semi-circular outer shell; 3. Waterproof sleeve; 4. Sealing mechanism; 41. Fixing sleeve; 42. Hinge; 43. Pressure plate; 44. Waterproof groove; 45. Waterproof sheet; 46. Dustproof net; 47. Sealing ring; 5. Installation mechanism; 51. Fixing shell; 52. Fixing column; 53. Fixing rod; 54. Fixing ball; 55. Locking ball; 56. Soft washer; 57. Fixing hole; 6. Fixing component; 61. Fixing groove; 62. Spring; 63. Limiting block; 7. Fixing bolt; 8. Fixing block. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] The following description, with reference to the accompanying drawings, describes a waterproof sleeve for the opening surface of an openable current transformer according to an embodiment of the present invention.

[0018] like Figures 1-6 As shown in the figure, a waterproof sleeve for the opening surface of an openable transformer according to an embodiment of the present invention includes: an upper semi-annular shell 1, a lower semi-annular shell 2, a waterproof sleeve 3, and a sealing mechanism 4.

[0019] The lower semi-circular outer shell 2 is installed at the bottom of the upper semi-circular outer shell 1, the waterproof sleeve 3 is fitted on the outside of the lower semi-circular outer shell 2, and the sealing mechanism 4 is installed on the lower semi-circular outer shell 2. The sealing mechanism 4 includes a fixing sleeve 41, a hinge 42, a pressure plate 43, and a waterproof sheet 45.

[0020] The fixing sleeve 41 is fitted onto the lower semi-annular outer shell 2, the hinge 42 is installed on the outer wall of the fixing sleeve 41, the pressure plate 43 is fixed on the inner wall of the waterproof sleeve 3, the fixing sleeve 41 is provided with a waterproof groove 44, and the waterproof sheet 45 is installed on the inner wall of the fixing sleeve 41.

[0021] Specifically, when waterproof protection is required for the switching transformer, the fixing sleeve 41 is first placed on the lower semi-annular outer shell 2, and then the waterproof sheet 45 is installed on the inner wall of the fixing sleeve 41 so that it can cover the gap between the fixing sleeve 41 and the lower semi-annular outer shell 2, thus playing a waterproof role. After the switching transformer is closed, the pressure plate 43 is pushed to rotate around the hinge 42, so that the pressure plate 43 tightly presses the waterproof sheet 45, thereby ensuring that the waterproof sheet 45 forms a tight fit with the lower semi-annular outer shell 2 and the fixing sleeve 41, effectively preventing rainwater and moisture from entering from there.

[0022] In one embodiment of this application, such as Figure 4 and Figure 5 As shown, the outer wall of the upper semi-annular shell 1 is provided with an installation mechanism 5.

[0023] The mounting mechanism 5 includes a fixed housing 51, a fixed column 52, a fixed rod 53, a fixed ball 54, and a locking ball 55.

[0024] The fixed shell 51 is fixed to the outer wall of the upper semi-annular shell 1, the fixed post 52 is slidably installed on the inner wall of the fixed shell 51, the fixed rod 53 is threadedly connected to the inside of the fixed post 52, the fixed ball 54 is fixed to the bottom wall of the fixed rod 53, the locking ball 55 is installed inside the fixed post 52, and the outer wall of the fixed post 52 is provided with a fixing hole 57.

[0025] It should be noted that the fixing column 52 described in this embodiment of the present invention is a hollow cylinder in the shape of a bolt.

[0026] Specifically, when it is necessary to fix the upper semi-annular shell 1 and the lower semi-annular shell 2, the fixing shell 51 is fixed to the outer wall of the upper semi-annular shell 1, and then the fixing post 52 is slidably installed on the inner wall of the fixing shell 51. Then, by rotating the fixing rod 53, when the fixing rod 53 is adjusted downward, the fixing ball 54 moves downward accordingly, pushing out the locking ball 55, so that the locking ball 55 is pushed out and stuck in the fixing hole 57, and extends out a part so that the three locking balls 55 tightly press the fixing post 52 to prevent it from shaking or shifting during use, thereby fixing the upper semi-annular shell 1 and the lower semi-annular shell 2.

[0027] In one embodiment of this application, such as Figure 2 As shown, a dustproof net 46 is installed inside the fixed shell 51, and a sealing ring 47 is installed on the inner wall of the waterproof groove 44.

[0028] Understandably, the installation of the dustproof net 46 effectively prevents dust from entering the lower semi-annular housing 2, avoiding dust accumulation that could affect the normal operation of the current transformer and extending the service life of the equipment. Meanwhile, the sealing ring 47, installed on the inner wall of the waterproof groove 44, can tightly fit between relevant components when the current transformer is in the closed state, further enhancing the sealing effect.

[0029] In one embodiment of this application, such as Figure 4 As shown, the inner wall of the waterproof sleeve 3 is provided with a fixing component 6.

[0030] The fixing component 6 includes a spring 62 and a limiting block 63.

[0031] The inner wall of the waterproof sleeve 3 is provided with a fixing groove 61, the spring 62 is installed inside the fixing groove 61, and the limiting block 63 is fixed to the other end of the spring 62.

[0032] Specifically, when the waterproof sleeve 3 is put on, after the waterproof sleeve 3 is put on the appropriate position, the spring 62 in the fixing component 6 will be compressed, and the limiting block 63 will be inserted into the corresponding fixing groove 61 under the action of the spring 62, thereby fixing the waterproof sleeve 3 on the lower semi-annular outer shell 2 and preventing the waterproof sleeve 3 from sliding or falling off.

[0033] In one embodiment of this application, such as Figure 2 As shown, a soft washer 56 is installed on the inner wall of the fixing column 52.

[0034] Understandably, the installation of the soft washer 56 can buffer the contact between the fixed post 52 and related components, reduce wear caused by collision, and enhance the stability of the fixation, so as to avoid affecting the normal use of the switching transformer due to loosening.

[0035] In one embodiment of this application, such as Figure 1 As shown, the upper semi-annular shell 1 is externally threaded with a fixing bolt 7, and the lower semi-annular shell 2 is fitted with a fixing block 8 at its bottom.

[0036] Understandably, the fixing bolts 7 ensure a more secure connection between the upper annular housing 1 and other components during installation. The tightening of the fixing bolts 7 can be adjusted by rotating them, ensuring a tight connection between the upper annular housing 1 and other components, preventing any loosening. The fixing block 8 installed at the bottom of the lower annular housing 2 allows the entire waterproof sleeve on the opening surface of the current transformer to be secured to other equipment or structures when needed.

[0037] Working principle: When waterproof protection is required for the switching transformer, firstly, the lower semi-annular outer shell 2 is installed at the bottom of the upper semi-annular outer shell 1, forming a complete annular structure to enclose the switching transformer. Next, the waterproof sleeve 3 is placed on the outside of the lower semi-annular outer shell 2. During the placement process, the fixing component 6 on the inner wall of the waterproof sleeve 3 plays its role. When it is placed in the appropriate position, the spring 62 is compressed, and the limiting block 63 is engaged with the fixing groove 61, firmly fixing the waterproof sleeve 3 on the lower semi-annular outer shell 2 and preventing it from sliding or falling off.

[0038] Then, the fixing sleeve 41 is fitted onto the lower semi-annular housing 2, ensuring accurate positioning and a tight fit. The fixing sleeve 41 is connected to the lower semi-annular housing 2 via the hinge 42, allowing the pressure plate 43 to rotate around the hinge 42. The waterproof sheet 45 is installed on the inner wall of the fixing sleeve 41, covering the gap between the fixing sleeve 41 and the lower semi-annular housing 2. After the current transformer closes, the pressure plate 43 rotates around the hinge 42, pressing the waterproof sheet 45 so that it fits tightly against the connection between the fixing sleeve 41 and the lower semi-annular housing 2, forming a reliable waterproof barrier that effectively prevents moisture from seeping into the interior of the current transformer.

[0039] When it is necessary to fix the upper semi-annular shell 1 and the lower semi-annular shell 2, the fixing shell 51 is fixed to the outer wall of the upper semi-annular shell 1, and the fixing post 52 is slidably installed on the inner wall of the fixing shell 51. The position of the fixing post 52 can be adjusted to meet different installation requirements. The fixing rod 53 is threaded into the inside of the fixing post 52, and the length of its extension is adjusted by rotating the fixing rod 53. When the fixing rod 53 is adjusted to the appropriate position, the fixing ball 54 moves downward and pushes out the locking ball 55. The locking ball 55 is locked in the fixing hole 57, so that the three locking balls 55 are fixed in the fixing post 52 to prevent them from shaking or shifting, thereby firmly fixing the upper semi-annular shell 1 and the lower semi-annular shell 2.

[0040] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A waterproof sleeve for the opening surface of an openable current transformer, characterized in that, include: The upper half-ring shell (1), the lower half-ring shell (2), the waterproof sleeve (3) and the sealing mechanism (4) are provided. The lower half-ring shell (2) is installed at the bottom of the upper half-ring shell (1). The waterproof sleeve (3) is fitted on the outside of the lower half-ring shell (2). The sealing mechanism (4) is provided on the lower half-ring shell (2). The sealing mechanism (4) includes a fixing sleeve (41), a hinge (42), a pressure plate (43) and a waterproof sheet (45). The fixing sleeve (41) is fitted on the lower half-ring shell (2). The hinge (42) is installed on the outer wall of the fixing sleeve (41). The pressure plate (43) is fixed on the inner wall of the waterproof sleeve (3). A waterproof groove (44) is provided on the fixing sleeve (41). The waterproof sheet (45) is installed on the inner wall of the fixing sleeve (41).

2. The waterproof sleeve for the opening surface of an openable current transformer according to claim 1, characterized in that, The upper semi-annular shell (1) is provided with an installation mechanism (5) on its outer wall. The installation mechanism (5) includes a fixed shell (51), a fixed column (52), a fixed rod (53), a fixed ball (54), and a locking ball (55). The fixed shell (51) is fixed to the outer wall of the upper semi-annular shell (1). The fixed column (52) is slidably installed on the inner wall of the fixed shell (51). The fixed rod (53) is threaded to the inside of the fixed column (52). The fixed ball (54) is fixed to the bottom wall of the fixed rod (53). The locking ball (55) is installed inside the fixed column (52). The outer wall of the fixed column (52) is provided with a fixing hole (57).

3. A waterproof sleeve for the opening surface of an openable current transformer according to claim 2, characterized in that, The interior of the fixed shell (51) is equipped with a dustproof net (46), and the inner wall of the waterproof groove (44) is equipped with a sealing ring (47).

4. A waterproof sleeve for the opening surface of an openable current transformer according to claim 1, characterized in that, The inner wall of the waterproof sleeve (3) is provided with a fixing component (6), which includes a spring (62) and a limiting block (63). The inner wall of the waterproof sleeve (3) is provided with a fixing groove (61), the spring (62) is installed inside the fixing groove (61), and the limiting block (63) is fixed to the other end of the spring (62).

5. A waterproof sleeve for the opening surface of an openable current transformer according to claim 2, characterized in that, The inner wall of the fixed column (52) is fitted with a soft gasket (56).

6. A waterproof sleeve for the opening surface of an openable current transformer according to claim 1, characterized in that, The upper semi-annular shell (1) is externally threaded with a fixing bolt (7), and the bottom of the lower semi-annular shell (2) is fitted with a fixing block (8).

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