Insulating sheath of voltage transformer

Abstract

The utility model discloses an insulating sheath of a voltage transformer, and relates to the field of transformer accessories. The device comprises a sleeve, a protection corrugated sleeve, a matching corrugated sleeve and a fixing cap, the upper surface of the sleeve is fixedly connected with a fixing ring, the fixing ring is communicated with the sleeve, and the bottom end of the protection corrugated sleeve and the bottom end of the matching corrugated sleeve are both arranged in the fixing ring. The protective corrugated sleeve and the matched corrugated sleeve are arranged, the protective corrugated sleeve and the matched corrugated sleeve are tightly buckled through the inserting strips and the inserting grooves, the protective corrugated sleeve and the matched corrugated sleeve are rotated, the bottom ends of the protective corrugated sleeve and the matched corrugated sleeve are fixed to the fixing ring in a threaded mode, and then the fixing cap is connected to the top ends of the protective corrugated sleeve and the matched corrugated sleeve in a threaded mode. The protection stability is enhanced, and the protection sleeve is used for protecting the joint of the fixing ring, so that external impurities are prevented from entering the fixing ring; the insulating sheath formed by the protective corrugated sleeve and the matched corrugated sleeve can be detached and reused, and meanwhile, the exposed mutual inductor component can be reliably insulated and protected.

Description

Technical Field

[0001] The utility model belongs to the field of accessory parts of transformers, and particularly relates to an insulating sheath for a voltage transformer. Background Technique

[0002] A voltage transformer is an instrument used to transform voltage. The main purpose of transforming voltage by a voltage transformer is to supply power to measuring instruments and relay protection devices, to measure the voltage, power, and electric energy of a circuit, or to protect valuable equipment, motors, and transformers in the circuit when a fault occurs in the circuit. The usage environment of voltage inductors is mostly exposed to the natural environment. Under the influence of high temperature, low temperature, wind, rain, snow, etc., they will age rapidly and may be damaged severely. Therefore, it is necessary to put an insulating sheath on the outside of the voltage inductor to protect the voltage inductor, improve safety, and extend the service life.

[0003] Most of the existing voltage transformers push a rubber heat-shrinkable tube to the position to be protected, and then use a hot air blower to bake and shrink the rubber heat-shrinkable tube to achieve the purpose of insulation. However, when the transformer components need to be repaired, this kind of insulating sheath is inconvenient to disassemble and can only be forcibly disassembled, and its service life is short. Content of the Utility Model

[0004] The purpose of the utility model is to provide an insulating sheath for a voltage transformer, which solves the problems that most of the existing voltage transformers push a rubber heat-shrinkable tube to the position to be protected, and then use a hot air blower to bake and shrink the rubber heat-shrinkable tube to achieve the purpose of insulation. However, when the transformer components need to be repaired, this kind of insulating sheath is inconvenient to disassemble and can only be forcibly disassembled, and its service life is short.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is an insulating sheath for a voltage transformer, which includes a sleeve, a protective corrugated sleeve, a mating corrugated sleeve, and a fixing cap. A fixing ring is fixedly connected to the upper surface of the sleeve, and the fixing ring is communicated with the sleeve. The bottom ends of the protective corrugated sleeve and the mating corrugated sleeve are both arranged in the fixing ring. A plug strip is fixedly connected to the side surface of the mating corrugated sleeve, and the plug strip is adapted to the shape of the mating corrugated sleeve. A slot is formed on the side surface of the protective corrugated sleeve, and the plug strip is inserted and matched with the slot. Matching teeth are provided at the top and bottom ends of the protective corrugated sleeve and the mating corrugated sleeve.

[0007] Threaded teeth are provided on the inner side surface of the fixing ring and the inner side surface of the fixing cap. The threaded teeth in the fixing ring are in threaded cooperation with the matching teeth at the bottom ends of the protective corrugated sleeve and the mating corrugated sleeve, and the matching teeth at the top ends of the protective corrugated sleeve and the mating corrugated sleeve are in threaded cooperation with the threaded teeth in the fixing cap.

[0008] On both sides of the upper surface of the sleeve, there are fixedly connected with fitting blocks. Inside the fitting blocks, there are fitting grooves. The circumferential side of the fixed ring is slidably connected with a protective sleeve. Both ends of the protective sleeve are fixedly connected with connecting frames. The connecting frames are "U"-shaped. The two ends of the connecting frames are respectively arranged on both sides of the fitting blocks. Between the two ends of the connecting frames, there is a fastening screw. The fastening screw is arranged in the fitting groove and is in threaded cooperation with it.

[0009] The protective sleeve is made of rubber material, and the fastening screw is made of plastic material; by setting the protective sleeve, it can protect the connection between the bottom ends of the protective corrugated sleeve and the fitting corrugated sleeve and the fixed ring, and prevent external impurities from entering it.

[0010] On the circumferential side of the top end of the fixed cap and the circumferential side of the sleeve, there are provided multiple groups of wire passing holes; by setting the wire passing holes, it is convenient for the wires to pass through, and it is more convenient to use.

[0011] The utility model has the following beneficial effects:

[0012] By setting the protective corrugated sleeve and the fitting corrugated sleeve, the protective corrugated sleeve and the fitting corrugated sleeve are sleeved on the parts of the mutual inductor that need to be protected, and are tightly buckled by the inserting strips and the inserting slots. Rotate the protective corrugated sleeve and the fitting corrugated sleeve so that their bottom ends are threadedly fixed to the fixed ring. Then, threadedly connect the fixed cap to the top ends of the protective corrugated sleeve and the fitting corrugated sleeve to strengthen the stability of the protection. Then, rotate the fastening screw to release its restriction on the fitting groove, and then move the protective sleeve so that the connection of the fixed ring is protected. Then, rotate the fastening screw to fix the protective sleeve; the insulating sheath composed of the protective corrugated sleeve and the fitting corrugated sleeve can be disassembled and reused, and is convenient and fast to use, and can reliably insulate and protect the exposed parts of the mutual inductor.

[0013] Of course, when implementing any product of the utility model, it is not necessarily required to achieve all the above-mentioned advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0015] Figure 1 It is a three-dimensional assembly structure schematic diagram of the present utility model;

[0016] Figure 2 is Figure 1 the enlarged view of area A in

[0017] Figure 3 For Figure 1 An enlarged view of area B in

[0018] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0019] 1. Sleeve; 101. Fixed ring; 102. Threaded teeth; 103. Fitting block; 104. Fitting groove; 2. Protective corrugated sleeve; 21. Fitting corrugated sleeve; 201. Fitting teeth; 202. Insertion strip; 3. Fixed cap; 301. Threading hole; 302. Protective sleeve; 303. Connecting frame; 304. Fastening screw. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", etc. indicating orientation or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Please refer to Figures 1-3 As shown, the present invention is an insulating sheath for a voltage transformer, including a sleeve 1, a protective corrugated sleeve 2, a fitting corrugated sleeve 21, and a fixed cap 3. A fixed ring 101 is fixedly connected to the upper surface of the sleeve 1, and the fixed ring 101 is communicated with the sleeve 1. The bottom ends of the protective corrugated sleeve 2 and the fitting corrugated sleeve 21 are both arranged in the fixed ring 101. An insertion strip 202 is fixedly connected to the side surface of the fitting corrugated sleeve 21, and the insertion strip 202 is adapted to the shape of the fitting corrugated sleeve 21. A slot is opened on the side surface of the protective corrugated sleeve 2, and the insertion strip 202 is inserted and matched with the slot. Fitting teeth 201 are opened at both the top and bottom ends of the protective corrugated sleeve 2 and the fitting corrugated sleeve 21.

[0024] Threaded teeth 102 are provided on the inner side of the fixed ring 101 and the inner side of the fixed cap 3. The threaded teeth 102 inside the fixed ring 101 are in threaded fit with the mating teeth 201 at the bottom ends of the protective corrugated sleeve 2 and the mating corrugated sleeve 21, and the mating teeth 201 at the top ends of the protective corrugated sleeve 2 and the mating corrugated sleeve 21 are in threaded fit with the threaded teeth 102 inside the fixed cap 3.

[0025] On both sides of the upper surface of the sleeve 1, fitting blocks 103 are fixedly connected. A fitting groove 104 is provided inside the fitting block 103. A protective sleeve 302 is slidably connected to the circumferential side of the fixed ring 101. Both ends of the protective sleeve 302 are fixedly connected with connecting frames 303. The connecting frames 303 are "U"-shaped. The two ends of the connecting frames 303 are respectively arranged on both sides of the fitting block 103. A fastening screw 304 is arranged between the two ends of the connecting frames 303. The fastening screw 304 is arranged in the fitting groove 104 and is in threaded fit with it.

[0026] The protective sleeve 302 is made of rubber material, and the fastening screw 304 is made of plastic material; by providing the protective sleeve 302, the connection between the bottom ends of the protective corrugated sleeve 2 and the mating corrugated sleeve 21 and the fixed ring 101 can be protected, preventing external impurities from entering it.

[0027] Multiple sets of wire passing holes 301 are provided on the circumferential side of the top end of the fixed cap 3 and the circumferential side of the sleeve 1; by providing the wire passing holes 301, it is convenient for the wires to pass through, making it more convenient to use.

[0028] It should be noted that during actual use, the protective corrugated sleeve 2 and the mating corrugated sleeve 21 are sleeved on the parts of the transformer that need to be protected. The protective corrugated sleeve 2 and the mating corrugated sleeve 21 are tightly buckled using the inserting strips 202 and the slots to provide insulation protection for the parts. Rotate the protective corrugated sleeve 2 and the mating corrugated sleeve 21 so that their bottom ends are threadedly fixed to the fixed ring 101, and then threadedly connect the fixed cap 3 to the top ends of the protective corrugated sleeve 2 and the mating corrugated sleeve 21 to enhance the stability of the protection. Then rotate the fastening screw 304 to release its restriction on the fitting groove 104, and then move the protective sleeve 302 so that the connection between the fixed ring 101 and the protective corrugated sleeve 2 and the mating corrugated sleeve 21 is protected, preventing external impurities from entering it. Then rotate the fastening screw 304 to fix the protective sleeve 302 using the connecting frame 303; the insulating sheath formed by the protective corrugated sleeve 2 and the mating corrugated sleeve 21 can be disassembled and reused, and it is convenient and fast to use, and at the same time can reliably provide insulation protection for the exposed parts of the transformer.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0030] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An insulating sheath for a voltage transformer, comprising a sleeve (1), a protective corrugated sleeve (2), a mating corrugated sleeve (21) and a fixing cap (3), characterized in that: The upper surface of the sleeve (1) is fixedly connected with a fixing ring (101), the fixing ring (101) is communicated with the sleeve (1), the bottom ends of the protective corrugated sleeve (2) and the matching corrugated sleeve (21) are both arranged in the fixing ring (101), the side surface of the matching corrugated sleeve (21) is fixedly connected with an inserting strip (202), the inserting strip (202) is adapted to the shape of the matching corrugated sleeve (21), a slot is formed in the side surface of the protective corrugated sleeve (2), the inserting strip (202) is in plug-in fit with the slot, and matching teeth (201) are formed at the top and bottom ends of the protective corrugated sleeve (2) and the matching corrugated sleeve (21).

2. The insulating sheath of a voltage transformer according to claim 1, characterized in that, Thread teeth (102) are formed on the inner side surface of the fixing ring (101) and the inner side surface of the fixing cap (3), the thread teeth (102) in the fixing ring (101) are in threaded fit with the matching teeth (201) at the bottom ends of the protective corrugated sleeve (2) and the matching corrugated sleeve (21), and the matching teeth (201) at the top ends of the protective corrugated sleeve (2) and the matching corrugated sleeve (21) are in threaded fit with the thread teeth (102) in the fixing cap (3).

3. The insulating sheath of a voltage transformer according to claim 2, characterized in that, Both sides of the upper surface of the sleeve (1) are fixedly connected with matching blocks (103), a matching groove (104) is formed inside the matching blocks (103), a protective sleeve (302) is slidably connected to the circumferential side of the fixing ring (101), both ends of the protective sleeve (302) are fixedly connected with connecting frames (303), the connecting frames (303) are "U"-shaped, both ends of the connecting frames (303) are respectively arranged on both sides of the matching blocks (103), and a fastening screw (304) is arranged between both ends of the connecting frames (303), and the fastening screw (304) is arranged in the matching groove (104) and is in threaded fit with it.

4. The insulating sheath of a voltage transformer according to claim 3, characterized in that, The protective sleeve (302) is made of rubber material, and the fastening screw (304) is made of plastic material.

5. The insulating sheath of a voltage transformer according to claim 4, characterized in that Multiple groups of wire passing holes (301) are formed on the circumferential side of the top end of the fixing cap (3) and the circumferential side of the sleeve (1).

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