Insulating protective sleeve for transformer

Abstract

The utility model relates to the technical field of electrical equipment insulation protection, and particularly discloses a transformer insulation protective sleeve which comprises an upper cover and a lower cover which are oppositely arranged, installation blocks are arranged on the two sides of the upper cover, an installation rod is arranged on each installation block, fixing blocks are arranged at the positions, corresponding to the installation blocks, of the two sides of the lower cover, and the installation rods are arranged on the fixing blocks. The fixing block is provided with positioning holes allowing the mounting rods to be inserted therein, and lock catch assemblies are arranged at the positions, corresponding to the positioning holes, of the fixing block. The high-voltage stay wire protective cover has the advantages of being simple in structure, not prone to tripping, resistant to falling and vibration and capable of protecting normal work of the wiring terminals in the protective cover and avoiding the situation that the wiring terminals are exposed under the action of external force, and the lock catch type insulation protective cover effectively avoids the accidents that high-voltage stay wire conductive pedestrians are electrically shocked in thunderstorm weather.

Description

Technical Field

[0001] The present application relates to the technical field of insulation protection of electric power equipment, and specifically discloses an insulation protection sleeve for a transformer. Background Art

[0002] At present, in order to prevent personal electric shock caused by exposed electrical contact points, and to prevent inter-phase short circuits caused by overlapping of foreign objects such as branches or crawling of small animals, transformer insulating sheaths have been introduced for various exposed joints and terminals of power equipment. Cold shrinkable sealing sheaths are used to wrap exposed joints and terminals. Cold shrinkable sealing sheaths are a kind of expansion material. The principle is to use elastomeric materials (commonly used are silicone rubber and EPDM rubber) to be injection vulcanized in the factory, and then expand the diameter and lined with nylon spiral supports to form a cold shrinkable sealing sheath. When sealing, the internal supporting nylon strips (supports) are pulled out, and the expanded cylindrical silicone rubber material relies on the elastic retraction force to tightly wrap the outer diameter of the exposed joints and terminals, thereby playing the role of insulation and sealing.

[0003] Currently, a silicone insulating protective cover is widely used in the market. The shape of the protective cover matches the shape of the equipment at the connection, wraps the connection, and is fastened with buckles. The buckles make the installation of the protective cover unreliable. At the same time, because the buckles are small and are separate accessories, each buckle needs to be fastened in sequence when installing the protective cover, which makes the installation efficiency low. Therefore, in view of this, the inventor provides a transformer insulating protective cover to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problem that the traditional transformer insulation protection cover is not installed firmly and that each buckle pin needs to be fastened in sequence when installing the protection cover, resulting in low installation efficiency.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a transformer insulating protective cover, including an upper cover and a lower cover arranged relatively to each other, mounting blocks are arranged on both sides of the upper cover, each mounting block is provided with a mounting rod, and fixing blocks are arranged on both sides of the lower cover at a position corresponding to each mounting block, and positioning holes are arranged on the fixing blocks for inserting the mounting rods, and locking components are arranged at the position of each positioning hole on the fixing blocks.

[0006] Furthermore, the inner wall of the positioning hole is provided with an inwardly recessed installation groove along the horizontal direction, and the locking assembly is located in the installation groove. The locking assembly includes a locking rod and a spring, one end of the spring is fixedly connected to the inner wall of the installation groove away from the positioning hole, and the other end is fixedly connected to one end of the locking rod, the locking rod is slidably matched with the installation groove, the other end of the locking rod extends out of the installation groove and is in sliding friction contact with the outer wall of the installation rod, and a groove matching the locking rod is provided along the surface of the installation rod.

[0007] Furthermore, an end of the locking rod close to the positioning hole is provided with an extrusion inclined surface for extrusion with the mounting rod, and an arc chamfer is provided at the bottom of the outer surface of the mounting rod.

[0008] Furthermore, an inwardly recessed adjustment groove is provided on the fixed block in the horizontal direction, the adjustment groove is connected to the mounting groove, a shift rod is fixed on the locking rod, the shift rod is located in the adjustment groove and can move in the horizontal direction, and the free end of the shift rod extends out of the adjustment groove.

[0009] Furthermore, a block for blocking the adjustment slot is provided on the lever.

[0010] Furthermore, a bayonet portion is provided on the lever, and a clamping slot which is engaged with the bayonet portion is provided at one end of the adjustment slot.

[0011] Furthermore, the upper cover and the lower cover are both hollow convex structures.

[0012] The principle and effect of this scheme are:

[0013] Compared with the prior art, the transformer insulation protective cover provided by the utility model has a simple structure, is not easy to disengage, is drop-proof and shock-proof, can protect the normal operation of the wiring terminals inside the shield, and has very good promotion value; and, it avoids the occurrence of the wiring terminals being exposed due to external forces, and the lock-type insulation protective cover effectively avoids the accidents of pedestrians being electrocuted by high-voltage wires in thunderstorms, and in the process of installing the protective cover, it is only necessary to put the lower cover on the transformer terminal, align the outlet with the cable, connect the cable to the terminal, and then buckle the upper cover to wrap the terminal, and insert the installation rod into the positioning hole to lock and fix it, and the installation is completed. The installation steps are simple and convenient, which greatly improves the installation efficiency, and at the same time ensures the reliability of the installation buckle, that is, it solves the problem that the traditional transformer insulation protective cover is not securely installed, and when installing the protective cover, each buckle needs to be buckled in turn, resulting in low installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a structural schematic diagram of a transformer insulation protection cover of the utility model;

[0016] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 It is a schematic diagram of the structure of the connection between the mounting rod and the fixing block in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the lock assembly in the utility model;

[0019] Figure 5 yes Figure 4 Schematic diagram of the structure from another perspective. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] The reference numerals in the drawings of the specification include: upper cover 1, lower cover 2, mounting rod 3, fixing block 4, positioning hole 5, mounting block 6, groove 7, locking rod 8, spring 9, mounting groove 10, adjustment groove 11, lever 12, stopper 13, bayonet portion 14, and slot 15.

[0022] A transformer insulation protective sleeve, for example Figure 1-5 As shown: it includes an upper cover 1 and a lower cover 2 which are arranged relatively, and both the upper cover 1 and the lower cover 2 are hollow convex structures. In this embodiment, the upper cover 1 and the lower cover 2 are made of flexible soft insulating materials. When the upper cover 1 and the lower cover 2 are buckled and locked, they form a protective cover body with a hollow convex structure. The hollow convex of the protective cover is used to place various exposed joints and wiring terminals, which is more applicable. The two sides of the two ends of the upper cover 1 (i.e., the four corners of the upper cover 1) are respectively fixed with mounting blocks 6, and the bottom of each mounting block 6 is fixed with a vertical downward mounting rod 3, and the two sides of the two ends of the lower cover 2 are fixed with fixed blocks 4 corresponding to the position of each mounting block 6, and the top of the fixed block 4 is provided with a positioning hole 5 for the mounting rod 3 to be inserted, and a locking assembly is provided at the position corresponding to each positioning hole 5 on the fixed block 4.

[0023] The inner wall of the positioning hole 5 is provided with a circular mounting groove 10 that is recessed inwardly in the horizontal direction. The locking assembly is located in the mounting groove 10. The locking assembly includes a locking rod 8 and a spring 9. The left end of the spring 9 is fixedly connected to the inner wall of the mounting groove 10 away from the positioning hole 5, and the right end is fixedly connected to the left end of the locking rod 8. The locking rod 8 is slidably matched with the mounting groove 10. The right end of the locking rod 8 extends out of the mounting groove 10 and is in sliding friction contact with the outer wall of the mounting rod 3. The bottom surface of the mounting rod 3 is provided with a groove 7 that matches the locking rod 8. The right end of the locking rod 8 is provided with an extrusion slope for extruding with the mounting rod 3. The bottom of the outer surface of the mounting rod 3 is provided with an arc chamfer to facilitate the extrusion of the mounting rod 3 and the extrusion slope of the locking rod 8.

[0024] In the above embodiment, when the spring 9 is in the natural state, the right end of the locking rod 8 extends out of the mounting groove 10. When the mounting rod 3 needs to be fixed, the mounting rod 3 only needs to be inserted into the positioning hole 5, and the mounting rod 3 squeezes the locking rod 8, thereby compressing the spring 9. Under the action of the spring 9, the locking rod 8 always abuts against the outer surface of the mounting rod 3 until the locking rod 8 is inserted into the groove 7, and the mounting rod 3 is limited in the vertical direction. Through the lock of the locking rod 8 and the groove 7, the protective cover is not affected by external factors and is not released during work, and the engagement is more secure.

[0025] The fixing block 4 is provided with an inwardly recessed adjustment groove 11 in the horizontal direction, the adjustment groove 11 is communicated with the mounting groove 10, and a lever 12 is fixedly provided on the lock rod 8, the lever 12 is located in the adjustment groove 11 and can move in the horizontal direction, and the free end of the lever 12 extends out of the adjustment groove 11. In this embodiment, the adjustment groove 11 can be provided on the top wall or the outer side wall of the fixing block 4, and by shifting the lever 12 to move the lever 12 to the left, the right end of the lock rod 8 can be disengaged from the groove 7 of the mounting rod 3, that is, the locking effect of the lock rod 8 on the mounting rod 3 is released.

[0026] A stopper 13 for blocking the adjustment slot 11 is fixed on the lever 12 to prevent foreign matter from accumulating in the adjustment slot 11 and affecting the use of the lock assembly. In this embodiment, the stopper 13 is arranged on the left side of the lever 12 and is located outside the fixing block 4. The stopper 13 is in contact with the surface of the fixing block 4 and can slide on the surface of the fixing block 4.

[0027] The lever 12 is provided with a bayonet portion 14, and the left end of the adjustment slot 11 is provided with a slot 15 that is engaged with the bayonet portion 14. In this embodiment, the lever 12 has a certain elasticity, and after the lever 12 is moved to the left, the bayonet portion 14 of the lever 12 can be engaged in the slot 15 to temporarily position the lever 12.

[0028] The working principle of this embodiment is as follows:

[0029] During installation, first put the lower cover 2 on the transformer terminal, align the outlet with the cable, connect the cable to the terminal, then buckle the upper cover 1 to wrap the terminal, insert the mounting rod 3 into the positioning hole 5 and lock it to complete the installation. The installation steps are simple and convenient, which greatly improves the installation efficiency and ensures the reliability of the installation buckle.

[0030] When a fault occurs and maintenance is required, the locking effect of the lock assembly can be released by pushing the levers 12 one by one. The disassembly steps are simple and convenient, which increases maintenance efficiency.

[0031] The transformer insulating protective cover provided by the utility model has a simple structure, is not easy to disengage, is drop-proof and shock-proof, can protect the normal operation of the wiring terminals inside the protective cover, and has very good promotion value; moreover, it avoids the occurrence of the wiring terminals being exposed due to external forces, and the lock-type insulating protective cover effectively avoids the accidents of pedestrians being electrocuted by the high-voltage wires during thunderstorms.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A transformer insulation protective cover, characterized in that: The utility model comprises an upper cover and a lower cover which are arranged opposite to each other, mounting blocks are arranged on both sides of the upper cover, and each mounting block is arranged with a mounting rod, and fixing blocks are arranged on both sides of the lower cover at positions corresponding to each mounting block, and positioning holes for inserting the mounting rods are arranged on the fixing blocks, and locking components are arranged at positions corresponding to each positioning hole on the fixing blocks.

2. The transformer insulation protective cover according to claim 1, characterized in that: The inner wall of the positioning hole is provided with an inwardly recessed installation groove along the horizontal direction, and the locking assembly is located in the installation groove. The locking assembly includes a locking rod and a spring, one end of the spring is fixedly connected to the inner wall of the installation groove away from the positioning hole, and the other end is fixedly connected to one end of the locking rod, the locking rod is slidably matched with the installation groove, the other end of the locking rod extends out of the installation groove and is in sliding friction contact with the outer wall of the installation rod, and a groove matching the locking rod is provided along the surface of the installation rod.

3. The transformer insulation protective cover according to claim 2, characterized in that: An end of the locking rod close to the positioning hole is provided with an extrusion inclined surface for extruding with the mounting rod, and an arc chamfer is provided at the bottom of the outer surface of the mounting rod.

4. The transformer insulation protective cover according to claim 2, characterized in that: The fixing block is provided with an inwardly recessed adjustment groove in the horizontal direction, the adjustment groove is communicated with the mounting groove, a shift rod is fixedly provided on the locking rod, the shift rod is located in the adjustment groove and can move in the horizontal direction, and the free end of the shift rod extends out of the adjustment groove.

5. The transformer insulation protective cover according to claim 4, characterized in that: The lever is provided with a stopper for blocking the adjustment slot.

6. The transformer insulation protective cover according to claim 4, characterized in that: The lever is provided with a bayonet portion, and one end of the adjustment slot is provided with a clamping slot that is clamped and matched with the bayonet portion.

7. The transformer insulation protective cover according to claim 1, characterized in that: The upper cover and the lower cover are both hollow convex structures.

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