Line protection device

Abstract

The utility model relates to the technical field of cable connection, in particular to a line protection device, which comprises a connecting piece provided with a first connecting part and at least two second connecting parts, the second connecting parts are uniformly arranged on the peripheral side of the first connecting part, and the first connecting part and the second connecting parts are hollow; two first convex ring parts are symmetrically arranged at the two ends of the first connecting part; two second convex ring parts are symmetrically arranged at the two ends of the second connecting part; the first sealing assembly is arranged between the two first convex ring parts, and the first sealing assembly is used for controlling connection and disconnection of the inner side and the outer side of the first sealing assembly; and the second sealing assemblies are arranged corresponding to the second connecting parts respectively, the second sealing assemblies are arranged between the two second convex ring parts, and the second sealing assemblies are used for controlling connection and disconnection of the inner sides and the outer sides of the second sealing assemblies. The utility model discloses a line protection device, and aims to solve the problem that cable connection in the prior art is complex in operation or incomplete in communication.

Description

Technical Field

[0001] The utility model relates to the technical field of cable connection, and more specifically, to a line protection device. Background Art

[0002] A cable (Electric cable, Cable) is usually a wire made of multiple mutually insulated conductors and an outer insulating protective layer, laid underground, in the air, etc., and is mostly three or five in number in the vast majority of cases. A cable generally consists of three parts: a conductor, an insulating layer, and a protective layer. There are usually two types: power cables and control cables. Power cables are mainly used for the transmission and distribution of electrical energy; control cables are mainly used for lines such as measurement, protection, and control. Cables have the characteristics of being electrically conductive inside and insulated outside.

[0003] After being manufactured, cables usually appear and are used in the form of large coils. In some special cases, two cables need to be connected for use. Since the conduction area of the inner conductor of the cable is a decisive condition affecting the cable transmission efficiency, the prior art usually connects them by means of copper tube crimping, splicing, tin brushing, or a transfer box. However, the above connection methods either require the dispersion of the multiple component wires of the conductor, or have the problem of incomplete contact, or have relatively complex problems, and are not convenient to use. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a line protection device, aiming to solve the problems of complex operation or incomplete connection in cable connection in the prior art.

[0005] To solve the above technical problems, a line protection device is proposed, including: a connecting piece, provided with a first connecting part and at least two second connecting parts, each of the second connecting parts being uniformly arranged on the periphery of the first connecting part, and both the first connecting part and the second connecting part being hollow;

[0006] Two first convex ring parts are symmetrically arranged at both ends of the first connecting part, the first convex ring part is hermetically arranged with the inner side wall of the first connecting part, and the inner diameter of the first convex ring part is smaller than the inner diameter of the first connecting part;

[0007] Two second convex ring parts are symmetrically arranged at both ends of the second connecting part, the second convex ring part is hermetically arranged with the inner side wall of the second connecting part, and the inner diameter of the second convex ring part is smaller than the inner diameter of the second connecting part;

[0008] A first sealing assembly is arranged between the two first convex ring parts, graphite is used to be placed between the first sealing assembly and the first connecting part, and the first sealing assembly is used to control the on-off of its inside and outside;

[0009] At least two second sealing components, each of the second sealing components being respectively arranged corresponding to each of the second connecting parts, the second sealing components being arranged between two of the second convex ring parts, graphite being used to be placed between the second sealing components and the second connecting parts, and the second sealing components being used to control the on-off between their inner and outer sides.

[0010] In any of the above technical solutions, further, it further includes:

[0011] A first cover member, the first connecting part being provided with a through first through hole, the first cover member being detachably arranged in the first through hole;

[0012] A plurality of second cover members, each of the second connecting parts being provided with a through second through hole, each of the second cover members being respectively detachably arranged in each of the second through holes.

[0013] In any of the above technical solutions, further, two first extension parts are symmetrically arranged at both ends of the first connecting part, and the inner diameter of the first extension part is greater than the inner diameter of the first convex ring part;

[0014] Two second extension parts are symmetrically arranged at both ends of each of the second connecting parts, and the inner diameter of the second extension part is greater than the inner diameter of the second convex ring part.

[0015] In any of the above technical solutions, further, the first convex ring part is provided with a first clamping groove, and a first sealing ring is arranged in the first clamping groove;

[0016] The second convex ring part is provided with a second clamping groove, and a second sealing ring is arranged in the second clamping groove.

[0017] In any of the above technical solutions, further, the first sealing component includes:

[0018] An inner side ring plate, fixedly arranged on the first convex ring part, and provided with a plurality of first guiding holes;

[0019] An outer side ring plate, rotatably arranged around the outside of the inner side ring plate and fittingly arranged with the inner side ring plate, and provided with a plurality of second guiding holes.

[0020] In any of the above technical solutions, further, it further includes:

[0021] A plurality of thickening parts, corresponding to each of the second connecting parts and arranged on the side of the second connecting part away from the first connecting part;

[0022] A sleeve, arranged on each of the thickening parts and arranged around the outside of the connecting piece.

[0023] The beneficial effects are as follows:

[0024] 1. The line protection device of the present utility model provides insertion spaces for at least three conductors of two cables to be connected through the first connection part and the second connection part of the connecting piece. At the same time, a first convex ring part and a second convex ring part are respectively arranged in the first connection part and the second connection part to narrow the entrances in the two connection parts. On the one hand, the fixing effect between the connection part and the inserted conductor is improved. On the other hand, it is convenient to cooperate with the sealing component to form an openable or closable space for placing graphite, which is convenient for the retention of graphite in the space between the sealing component and the connection part and the subsequent movement of graphite between the conductors of the two cables;

[0025] 2. The line protection device of the present utility model controls the on-off of the spaces formed by the first sealing component and the second sealing component respectively with the corresponding convex ring parts of the two connection parts, which is convenient for filling powdered graphite, granular graphite or block graphite into the aforementioned space and retaining it before connecting the cables, and is also convenient for spreading the graphite outside the first sealing component and the second sealing component to the inside of the sealing component during connection, so as to improve the connection effect of the two cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a three-dimensional structural schematic diagram of a line protection device of the present utility model;

[0028] Figure 2 is a cross-sectional structural schematic diagram of a line protection device of the present utility model.

[0029] The reference numerals are explained as follows:

[0030] 1. Connecting piece; 101. First connection part; 102. Second connection part; 103. First convex ring part; 104. Second convex ring part; 105. First extension part; 106. Second extension part; 107. Thickened part;

[0031] 2. First sealing component;

[0032] 3. Second sealing component; 301. Inner ring plate; 302. Outer ring plate;

[0033] 4. First cover piece;

[0034] 5. Second cover piece;

[0035] 6. First sealing ring;

[0036] 7. Second sealing ring;

[0037] 8. Sleeve. Detailed implementation manners

[0038] Next, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that, as shown in the present application and the claims, unless the context clearly indicates an exception, words such as "a", "an", "one" and / or "the" are not specifically singular and may also include plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0040] If there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In the present invention, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; 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 internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. 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.

[0042] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0043] The present utility model provides a line protection device, which mainly forms a space for placing graphite that can be opened and closed outside the insertion space of two cables through a connecting part, a convex ring part and a sealing component. When connecting the cables, the sealing component is opened, and the middle and the periphery of the two cables are electrically conducted by means of the sealing component and the guiding property of the graphite, which is convenient to use and can maintain good conduction efficiency.

[0044] The following will detail a line protection device of the present application through the following embodiments.

[0045] In this embodiment, as Figure 1 and Figure 2 shown, the line protection device includes: a connecting member 1, provided with a first connecting part 101 and at least two second connecting parts 102. Each of the second connecting parts 102 is evenly arranged on the periphery of the first connecting part 101. The first connecting part 101 and the second connecting parts 102 are both hollow;

[0046] Two first convex ring parts 103 are symmetrically arranged at both ends of the first connecting part 101. The first convex ring parts 103 are hermetically arranged with the inner side wall of the first connecting part 101, and the inner diameter of the first convex ring parts 103 is smaller than the inner diameter of the first connecting part 101;

[0047] Two second convex ring parts 104 are symmetrically arranged at both ends of the second connecting part 102. The second convex ring parts 104 are hermetically arranged with the inner side wall of the second connecting part 102, and the inner diameter of the second convex ring parts 104 is smaller than the inner diameter of the second connecting part 102;

[0048] A first sealing component 2 is arranged between the two first convex ring parts 103. The space between the first sealing component 2 and the first connecting part 101 is for placing graphite, and the first sealing component 2 is used to control the on-off of its inner and outer sides;

[0049] At least two second sealing components 3, each second sealing component 3 is respectively arranged corresponding to each second connecting portion 102. The second sealing component 3 is arranged between two second convex ring portions 104. Graphite is used to be placed between the second sealing component 3 and the second connecting portion 102. The second sealing component 3 is used to control the on-off between its inner and outer sides.

[0050] In this technical solution, both the first connecting portion 101 and the second connecting portion 102 are in a hollow tubular structure. The second connecting portion 102 is provided with four. The four second connecting portions 102 are evenly arranged circumferentially on the circumferential side of the first connecting portion 101. The first connecting portion 101 and the second connecting portion 102 are integrally formed. Two first convex ring portions 103 are symmetrically fixed at both ends of the first connecting portion 101 front and back. The outer diameter of the first convex ring portion 103 is equal to the inner diameter of the first connecting portion 101, so that the first convex ring portion 103 protrudes inwards from the inner side of the first connecting portion 101; on the front and back sides of each second connecting portion 102, a second convex ring portion 104 is provided. The outer diameter of the second convex ring portion 104 is equal to the inner diameter of the second connecting portion 102. Both ends of the first sealing component 2 are hermetically connected to the two first convex ring portions 103 respectively. The second sealing component 3 is provided with four. Both ends of each second sealing component 3 are hermetically connected to the corresponding two second convex ring portions 104 respectively. The first sealing component 2, the first connecting portion 101 and the two first convex ring portions 103 form a first sealable cavity, and graphite is placed in the first sealable cavity; the second sealing component 3, the second connecting portion 102 and the two second convex ring portions 104 form another second sealable cavity, and graphite is placed in the second sealable cavity.

[0051] During use, first install graphite in the two sealable cavities respectively in advance. Then, insert each conductor of a cable into one end of the connector 1 first. Then open the first sealing component 2 and the second sealing component 3, and then insert each conductor of the other cable into the corresponding first connecting portion 101 or second connecting portion 102. The graphite will diffuse into the gap between the corresponding two conductors.

[0052] The first sealing component 2 and the second sealing component 3 are made of metal materials, and the connector 1 is made of rubber or plastic materials.

[0053] Since in actual use, there will be a phenomenon of local cavities when the graphite diffuses in the first sealable cavity and the second sealable cavity, therefore, a first through hole and a second through hole are respectively provided on the first connecting portion 101 and the second connecting portion 102. Specifically, it further includes:

[0054] A first cover member 4. The first connecting portion 101 is provided with a penetrating first through hole, and the first cover member 4 is detachably arranged in the first through hole;

[0055] A plurality of second cover members 5, each second connecting portion 102 is provided with a through second through hole, and each second cover member 5 is detachably disposed in each second through hole.

[0056] In this technical solution, the opening and closing of the first through hole is controlled by the first cover body, and the opening and closing of the second through hole is controlled by the second cover body. After inserting two cables, the graphite in the first sealing cavity and the second sealing cavity can be supplemented through the first through hole and the second through hole, so that the graphite in the first sealing cavity and the space at the conductor insertion joint of the first sealing cavity through the first sealing assembly 2 reaches a full state or a state that does not affect the connection. Then, the first cover body is covered on the first through hole; similarly, the graphite in the second sealing cavity can also be supplemented through the second through hole.

[0057] Generally speaking, the above method does not require separating the constituent wires of each conductor of the two cables, nor does it require high-temperature heating during soldering, and it can maintain good conduction efficiency and achieve the advantage of small occupied space at the connection.

[0058] In this embodiment, two first extension portions 105 are symmetrically provided at both ends of the first connecting portion 101, and the inner diameter of the first extension portion 105 is larger than the inner diameter of the first convex ring portion 103;

[0059] Two second extension portions 106 are symmetrically provided at both ends of each second connecting portion 102, and the inner diameter of the second extension portion 106 is larger than the inner diameter of the second convex ring portion 104.

[0060] In this technical solution, both the first extension portion 105 and the second extension portion 106 are provided in a hollow tubular shape. The outer diameter of the first extension portion 105 is equal to the outer diameter of the first connecting portion 101, and the inner diameter of the first extension portion 105 is equal to the inner diameter of the first connecting portion 101; the outer diameter of the second extension portion 106 is equal to the outer diameter of the second connecting portion 102, and the inner diameter of the second extension portion 106 is equal to the inner diameter of the second connecting portion 102. The setting of the first extension portion 105 and the second extension portion 106 can wrap the insulating layer outside each conductor, improve the sealing effect inside the connecting portion, and also prevent the external space from affecting the connection.

[0061] In this embodiment, the first convex ring portion 103 is provided with a first card slot, and a first sealing ring 6 is provided in the first card slot;

[0062] The second convex ring portion 104 is provided with a second card slot, and a second sealing ring 7 is provided in the second card slot.

[0063] In this technical solution, since the conductor is usually composed of multiple constituent wires twisted together, the setting of the first sealing ring 6 and the second sealing ring 7 can seal the gap between the convex ring portion and the conductor, and prevent the diffusion of the graphite in the internal space of the connecting portion.

[0064] In this embodiment, the first sealing assembly 2 includes:

[0065] An inner ring plate 301, fixedly arranged on the first convex ring portion 103, and provided with a plurality of first guiding holes;

[0066] An outer ring plate 302, rotatably arranged around the outside of the inner ring plate 301, and attached to the inner ring plate 301, and provided with a plurality of second guiding holes.

[0067] In this technical solution, the inner diameter of the inner ring plate 301 of the first sealing assembly 2 is equal to the inner diameter of the first convex ring portion 103, the inner diameter of the outer ring plate 302 is equal to the outer diameter of the inner ring plate 301, the outer diameter of the outer ring plate 302 is smaller than the inner diameter of the first connecting portion 101, the front and rear ends of the inner ring plate 301 are fixed to the side surfaces of the first convex ring portions 103 on the front and rear sides, the outer ring plate 302 is rotatably sleeved on the inner ring plate 301, a plurality of long strip-shaped first guiding holes are uniformly arranged on the inner ring plate 301 in the circumferential direction, and an equal number of long strip-shaped second guiding holes are uniformly arranged on the outer ring plate 302 in the circumferential direction. By controlling the rotation angle of the outer ring plate 302 relative to the inner ring plate 301, it is controlled whether the first guiding holes and the second guiding holes are aligned. When the first guiding holes and the second guiding holes are aligned, the inside and outside of the first sealing assembly 2 are in a communicating state. When the first guiding holes and the second guiding holes are not aligned, the inside and outside of the first sealing assembly 2 are in a disconnected state.

[0068] The structure of the second sealing assembly 3 is the same as that of the first sealing assembly 2.

[0069] In some technical solutions, the rotation angle of the outer ring plate 302 can be adjusted through the through holes on the first connecting portion 101 or the second connecting portion 102, so that the first guiding holes and the second guiding holes are communicated. In this way, graphite can be released after the two cables are plugged and connected, reducing the degree of outward diffusion of graphite, and making the graphite as dispersed as possible between the two conductors.

[0070] In this embodiment, it further includes:

[0071] A plurality of thickening portions 107, corresponding to each second connecting portion 102, and arranged on the side surface of the second connecting portion 102 away from the first connecting portion 101;

[0072] A sleeve 8, arranged on each thickening portion 107 and arranged around the outside of the connecting member 1.

[0073] In this technical solution, the thickening parts 107 are provided in four numbers and are respectively disposed outside the four second connecting parts 102. In this way, there is a certain distance between the sleeve 8 and the second connecting part 102, so that the sleeve 8 can be sleeved outside a cable before the connector 1 is docked with the cable. After the cable is inserted into the connector 1, the sleeve 8 is fixed on the thickening part 107, enabling the sleeve 8 to be sleeved outside the protective layers of two cables, thereby protecting the connection part and the overall line protection device.

[0074] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to technologies in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A line protection device, characterized in that: include: A connecting member (1) is provided with a first connecting portion (101) and at least two second connecting portions (102), wherein each of the second connecting portions (102) is evenly arranged around the first connecting portion (101), and the first connecting portion (101) and the second connecting portion (102) are both hollow; Two first convex ring parts (103) are symmetrically arranged at both ends of the first connecting part (101), the first convex ring parts (103) are sealed with the inner side wall of the first connecting part (101), and the inner diameter of the first convex ring part (103) is smaller than the inner diameter of the first connecting part (101); Two second convex ring portions (104) are symmetrically arranged at both ends of the second connecting portion (102); the second convex ring portion (104) is sealed with the inner side wall of the second connecting portion (102); and the inner diameter of the second convex ring portion (104) is smaller than the inner diameter of the second connecting portion (102); A first sealing component (2) is arranged between the two first convex ring parts (103), graphite is placed between the first sealing component (2) and the first connecting part (101), and the first sealing component (2) is used to control the opening and closing of the inner and outer sides thereof; At least two second sealing components (3), each second sealing component (3) is arranged corresponding to each second connecting portion (102), the second sealing component (3) is arranged between two second convex ring portions (104), graphite is placed between the second sealing component (3) and the second connecting portion (102), and the second sealing component (3) is used to control the opening and closing of the inner and outer sides thereof.

2. The line protection device according to claim 1, characterized in that: Also includes: A first cover member (4), wherein the first connecting portion (101) is provided with a first through hole extending therethrough, and the first cover member (4) is detachably arranged in the first through hole; A plurality of second cover members (5), each of the second connection portions (102) is provided with a second through hole extending therethrough, and each of the second cover members (5) is detachably arranged in each of the second through holes.

3. The line protection device according to claim 1, characterized in that: Two first extension parts (105) are symmetrically provided at both ends of the first connecting part (101), and the inner diameter of the first extension part (105) is larger than the inner diameter of the first convex ring part (103); Two second extension portions (106) are symmetrically arranged at both ends of each second connecting portion (102), and the inner diameter of the second extension portion (106) is greater than the inner diameter of the second convex ring portion (104).

4. The line protection device according to claim 1, characterized in that: The first convex ring portion (103) is provided with a first clamping groove, and a first sealing ring (6) is provided in the first clamping groove; The second convex ring portion (104) is provided with a second clamping groove, and a second sealing ring (7) is provided in the second clamping groove.

5. The line protection device according to claim 1, characterized in that: The first sealing component (2) comprises: An inner ring plate (301) is fixedly arranged on the first convex ring portion (103) and is provided with a plurality of first guide holes; The outer ring plate (302) is rotatably arranged around the outer side of the inner ring plate (301), and is arranged in close contact with the inner ring plate (301), and is provided with a plurality of second guide holes.

6. The line protection device according to claim 1, characterized in that: Also includes: A plurality of thickened portions (107), arranged corresponding to each of the second connecting portions (102), and arranged on a side of the second connecting portion (102) away from the first connecting portion (101); A sleeve (8) is arranged on each of the thickened portions (107) and surrounds the outside of the connecting member (1).

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