Secondary fire connection wiring terminal protection device

Abstract

The utility model discloses a secondary fire connection wiring terminal protection device which comprises a protection sleeve, the protection sleeve has axial flexibility and insulativity, the inner edge of the protection sleeve is provided with a hollow cavity arranged along the axial direction of the protection sleeve, the hollow cavity penetrates through the two ends of the protection sleeve, and openings are arranged at the two ends of the protection sleeve. And the two ends of the protective sleeve are respectively provided with an opening binding device which is used for changing the size of the opening at the end part of the protective sleeve and completely closing the opening. The binding band design is adopted at the two ends of the wiring terminal protection device, the wiring terminal protection device can be fixed on the secondary wiring, the electrified part of the wiring terminal is wrapped on the inner side of the protection sleeve, and meanwhile, the elastic buckling piece is arranged on the connecting part of the fixing sleeve, so that the protection device is convenient to disassemble and assemble; the protective sleeve adopts the design of a telescopic hose, can realize the stretching and folding of different lengths, can well wrap and cover the secondary wiring terminals of different lengths and distances, and plays a role in insulation and isolation.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to the technical field of secondary fire connection terminal protection devices. Background Art

[0002] With the increase in people's demand for electricity and the increase in investment in power grid construction, the number of substation renovation and expansion projects has gradually increased in recent years, and the secondary connection work is time-sensitive and the task is heavy. In order to ensure the safety and reliability of the power equipment in the station, it is also necessary to regularly inspect and maintain the power equipment. During the construction and maintenance process, electrical misoperation caused by the three errors of relay protection (miscontact, miswiring, and missetting) is a major hazard to power production. The occurrence of misoperation directly threatens personal safety, equipment safety, and the reliable operation of the power system.

[0003] At present, the measures adopted during the secondary connection are generally to use red insulating tape to seal the wiring terminals in the non-connection parts. Without taking other protective measures, this method is easy to cause falling off, short circuit, grounding, disconnection, leakage and other phenomena. In addition, it is not easy to identify the terminal row after the insulating tape is bonded during the connection, and the insulating tape cannot be reused, which is easy to cause waste of resources. Summary of the invention

[0004] The purpose of the utility model is to solve the problems in the prior art and propose a secondary live connection terminal protection device, which can effectively wrap the exposed live parts of the secondary connection, thereby achieving insulation isolation, effectively preventing the occurrence of three errors of relay protection, and providing guarantee for the safe and stable operation of the power grid.

[0005] To achieve the above-mentioned purpose, the utility model proposes a secondary live connection terminal protection device, including a protective sleeve, the protective sleeve has axial elasticity and insulation, the inner edge of the protective sleeve is provided with a hollow chamber arranged along its axial direction, the hollow chamber is arranged through both ends of the protective sleeve and has openings at both ends, and the two ends of the protective sleeve are respectively provided with a constriction device for changing the size of the opening at the end of the protective sleeve and making the opening completely closed.

[0006] Preferably, the constriction device includes a connecting part, a fixing part and an insertion part, the fixing part is in the shape of an elongated strip, the connecting part and the insertion part are respectively arranged at two ends of the fixing part, the connecting part includes an elastic clip and a ring sleeve, the ring sleeve encloses a channel for the insertion part and the fixing part to pass through, the elastic clip is located in the ring, and the surface of the fixing part is provided with unidirectional bevel teeth arranged along its length direction, and the elastic clip is engaged with the unidirectional bevel teeth.

[0007] Preferably, the middle portion of the elastic clip is fixedly connected to the collar, and the elastic clip is provided with a locking tooth engaged with the one-way bevel tooth and a pressing buckle for driving the locking tooth away from the one-way bevel tooth.

[0008] Preferably, a smooth surface is provided on a side of the fixing portion away from the one-way bevel teeth.

[0009] Preferably, the connecting portion, the fixing portion and the inserting portion are integrally formed.

[0010] Preferably, the protective sleeve is composed of a spiral PVC telescopic tube.

[0011] Preferably, the above-mentioned material can be in a variety of colors.

[0012] The utility model discloses a secondary live terminal protection device with beneficial effects: the utility model adopts a binding strap design at both ends, so that the terminal protection device can be fixed on the secondary wiring, and the live part of the terminal is wrapped inside the protective cover, and elastic clips are arranged on the connection part of the fixed cover to facilitate the disassembly and assembly of the protection device; the protective cover adopts a retractable hose design, which can achieve extension and folding of different lengths, and can well wrap and cover the secondary terminal blocks of different lengths and distances, so as to play an insulating and isolating role; the insulating, anti-electrical and flame-retardant polycarbonate material is adopted, which not only ensures the strength requirements, but also improves its own safety.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a secondary live connection terminal protection device in a folded state.

[0015] Figure 2 The utility model is a structural schematic diagram of a secondary live connection terminal protection device in an extended state.

[0016] Figure 3 It is a partial enlarged view of a secondary live connection terminal protection device of the utility model in a locking state of a constriction device.

[0017] Figure 4 It is a partial enlarged view of a secondary live connection terminal protection device of the utility model in a loosened state of a tie device.

[0018] in:

[0019] 1-cuffing device; 2-protective cover; 110-connecting part; 111-elastic buckle; 112-locking tooth; 113-press buckle; 114-ring; 120-fixing part; 121-one-way oblique tooth; 122-smooth surface; 130-insertion part. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Therefore, the 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 "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1 , Figure 2The utility model discloses a secondary live connection terminal protection device, comprising two constriction devices 1 capable of fixing the terminal protection device on the secondary connection and a protective cover 2 wrapping the exposed live part of the secondary connection, wherein the two constriction devices 1 are provided with a connecting portion 110, a fixing portion 120 and an inserting portion 130, the connecting portion is arranged at one end of the fixing portion 120, the inserting portion 130 is arranged at the other end of the fixing portion 120, the two fixing portions are fixedly connected to the two ends of the protective cover 2, the connecting portion 110 comprises an elastic clip 111 and a collar 114, the elastic clip 111 is located in the middle of the collar 114, and the elastic clip 111 is provided with a locking tooth 11 2 and a press buckle 113, one side of the fixing part 120 is provided with a row of one-way bevel teeth 121, and the other side is a smooth surface 122. When the secondary wiring terminal enters the protective cover 2 through a hole at one end, when the live part of the secondary wiring terminal enters the wrapping range of the protective cover, after the insertion part 130 at one end is inserted into the connecting part 110, the locking teeth 112 and the one-way bevel teeth 121 are snapped together, and the connecting part 110 can lock the terminal protection device on the secondary wiring, and the protective cover 2 extends outward to the required length that can completely wrap the live part of the secondary wiring terminal, and the insertion part 130 at the other end is inserted into the connecting part 110, and locked into a seamless knot. The utility model adopts a binding strap design at both ends, which can fix the terminal protection device on the secondary wiring, wrap the live part of the terminal inside the protective cover, and at the same time, an elastic snap fastener is provided on the connecting part of the fixing cover to facilitate the disassembly and assembly of the protection device. The protective cover adopts a retractable hose design, which can be stretched and folded to different lengths. It can well wrap and cover secondary wiring terminals of different lengths and distances, playing an insulating and isolating role.

[0025] See also Figure 3 , Figure 4 The elastic buckle 111 of the connecting part 110 is provided with a pressing buckle 113. When the pressing buckle 113 is pressed, the locking tooth 112 is away from the one-way oblique tooth 121, so that the insertion part 130 can be pulled out of the ring 114, and the terminal protection device is separated from the secondary wiring.

[0026] Preferably, the cinch device 1 and the protective cover 2 are made of insulating, anti-electrical and flame-retardant polycarbonate material.

[0027] Preferably, the protective cover 2 is composed of a spiral PVC telescopic tube.

[0028] Working process of this utility model:

[0029] The utility model is a secondary live terminal protection device. When in operation, when in use, first insert the disassembled secondary terminal into the terminal protection device through a hole at one end. When the live part of the secondary terminal enters the wrapping range of the protective cover 2, the insertion part 130 at one end of the constriction device 1 is inserted into the connecting part 110, and the locking teeth 112 are engaged with the one-way bevel teeth 121 to lock the terminal protection device on the secondary wiring. The protective cover 2 extends outward to the required length that can completely wrap the live part of the secondary terminal, and the insertion part 130 at the other end is inserted into the connecting part 110 and locked into a seamless knot. After the maintenance is completed, press the pressing buckle 113 connected to the connecting part 110 on the secondary wiring side to release the connecting part 110 locked on the secondary wiring side, fold the protective cover 2 to extend the wrapped live part of the terminal, remove the terminal protection device, and allow the insertion part 130 to be pulled out of the ring 114 for secondary use.

[0030] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The electric slide rail slide, cylinder, welding machine, electric telescopic rod and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structure. Workers can complete normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the prior art, and no specific description is given here.

[0031] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A secondary live connection terminal protection device, comprising a protective sleeve (2), characterized in that: The protective sleeve (2) has axial elasticity and insulation properties. The inner edge of the protective sleeve (2) is provided with a hollow chamber arranged along its axial direction. The hollow chamber is arranged through both ends of the protective sleeve (2) and has openings at both ends. Both ends of the protective sleeve (2) are respectively provided with a constriction device (1) for changing the size of the opening at the end of the protective sleeve (2) and making the opening completely closed.

2. A secondary fire connection terminal protection device as claimed in claim 1, characterized in that: The cinch device (1) comprises a connecting portion (110), a fixing portion (120) and an insertion portion (130); the fixing portion (120) is in the shape of an elongated strip; the connecting portion (110) and the insertion portion (130) are respectively arranged at two ends of the fixing portion (120); the connecting portion (110) comprises an elastic snap-fitting piece (111) and a collar (114); the collar (114) is combined to form a passage for the insertion portion (130) and the fixing portion (120) to pass through; the elastic snap-fitting piece (111) is located inside the collar (114); a surface of the fixing portion (120) is provided with one-way bevel teeth (121) arranged along its length direction; the elastic snap-fitting piece (111) meshes with the one-way bevel teeth (121).

3. A secondary fire connection terminal protection device as claimed in claim 2, characterized in that: The middle portion of the elastic clip (111) is fixedly connected to the collar (114), and the elastic clip (111) is provided with a locking tooth (112) meshing with the one-way bevel tooth (121) and a pressing buckle (113) for driving the locking tooth (112) away from the one-way bevel tooth (121).

4. A secondary fire connection terminal protection device as claimed in claim 3, characterized in that: A smooth surface (122) is provided on a side of the fixing portion (120) away from the one-way bevel teeth (121).

5. A secondary fire connection terminal protection device as claimed in claim 2, characterized in that: The connecting portion (110), the fixing portion (120) and the inserting portion (130) are integrally formed.

6. A secondary fire connection terminal protection device as claimed in claim 1, characterized in that: The protective sleeve (2) is composed of a spiral PVC telescopic tube.

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