A protective sleeve for cable corners

Abstract

This utility model provides a protective sleeve for cable corners, including a first arm and a second arm, which are arranged perpendicularly to each other. Multiple placement slots are provided on one side of the first and second arms for placing cables, and multiple filling slots are provided on the other side of the first and second arms for filling with adhesive. A removable pressure plate is provided on the placement slots. Multiple inner cavities are provided inside the first and second arms, and the interior of each cavity is filled with flame-retardant gas. This solves the problem of insulation layer damage easily occurring at corners in narrow vertical cable trays.

Description

Technical Field

[0001] This utility model relates to the field of cable cabling, and in particular to a protective sleeve for cable corners. Background Technology

[0002] In the field of power engineering and building cabling, the protection of cables at corners in narrow vertical cable trays has always been a problem. Traditional cable trays often use right-angle or arc structures at corners. During the concrete pouring process, cables are prone to direct contact with the hard surface at the corner of the cable tray, and are worn by the concrete pressure. Moreover, with long-term use, the cables are affected by external forces such as pulling and thermal expansion and contraction, which can easily cause the insulation layer to break at the corners. This not only shortens the service life of the cables, but also poses safety hazards such as leakage and short circuits.

[0003] In addition, existing protective measures lack effective cable fixing and fire-retardant functions, and cannot meet the safety requirements of use in complex environments. Therefore, a protective sleeve that can be used at cable corners is needed to reduce the problem of insulation damage at corners. Utility Model Content

[0004] The main purpose of this utility model is to provide a protective sleeve for cable corners, which solves the problem that the insulation layer is easily damaged at corners in narrow grooves of vertical cabling.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a protective sleeve for cable corners, including a first arm and a second arm, the first arm and the second arm are arranged perpendicularly, and a plurality of placement slots are provided on one side of the first arm and the second arm for placing cables. The first and second arms are provided with multiple filling slots on the other side, which are used to fill adhesive. The placement slots are provided with removable pressure plates. The first and second arms are provided with multiple inner cavities, which are filled with flame-retardant gas.

[0006] In the preferred embodiment, the outermost sides of the first and second arms are also provided with side plates, and the side plates are provided with multiple pin holes.

[0007] In the preferred embodiment, the side of the pressure plate facing the first and second arms is also provided with multiple connecting pins, which are used to connect with the pin holes.

[0008] In the preferred embodiment, the end face of the second arm has multiple one-way valves, which are connected to the opening of the inner cavity. The one-way valves are used to inject flame-retardant gas into the inner cavity.

[0009] In the preferred embodiment, the flame-retardant gas is carbon dioxide.

[0010] In the preferred embodiment, the pressure plate is provided with multiple pressure grooves on the side facing the first and second arms. The number of pressure grooves corresponds one-to-one with the placement grooves, and the pressure grooves are used to clamp the cables in conjunction with the placement grooves.

[0011] In the preferred embodiment, the placement slots are arranged in an L-shape on the outer sides of the first and second arms.

[0012] In the preferred embodiment, the adhesive used to fill the filling groove is epoxy resin. This utility model provides a protective sleeve for cable corners, which has the following advantages: The sleeve, by setting placement grooves and pressure plates in the first and second arms, can securely clamp the cable, preventing direct contact with concrete. The epoxy resin adhesive filled in the grooves firmly bonds the sleeve to the concrete, enhancing the fixing effect. The carbon dioxide flame-retardant gas filled in the inner cavity, combined with a one-way valve for gas replenishment, can suppress the spread of fire in the event of a fire, improving safety. This protective sleeve effectively solves the problems of cables being easily cut by concrete at corners and having a short service life. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is an exploded view of the protective sleeve of this utility model; Figure 2 This is an isometric view of the fit between the protective sleeve and the cable of this utility model; Figure 3 This is a cross-sectional schematic diagram of the inner cavity of this utility model; Figure 4 This is a top view of the installation of the protective sleeve of this utility model; Figure 5 This is an isometric view of the installation of the protective sleeve of this utility model.

[0014] In the diagram: 1. First arm; 2. Second arm; 3. Filling groove; 4. Placement groove; 5. Check valve; 6. Pin hole; 7. Pressure plate; 8. Connecting pin; 9. Pressure groove; 10. Side plate; 11. Inner cavity; 12. Cable. Detailed Implementation

[0015] Example 1 like Figure 1-5 As shown, a protective sleeve for cable corners includes a first arm 1 and a second arm 2. The first arm 1 and the second arm 2 are arranged perpendicularly. A plurality of placement slots 4 are provided on one side of the first arm 1 and the second arm 2. The placement slots 4 are used to place cables. On the other side of the first arm 1 and the second arm 2, there are multiple filling grooves 3, which are used to fill adhesive. The placement groove 4 is provided with a detachable pressure plate 7. The interior of the first arm 1 and the second arm 2 is provided with multiple inner cavities 11, which are filled with flame-retardant gas.

[0016] In the preferred embodiment, the outermost sides of the first arm 1 and the second arm 2 are also provided with side plates 10, and the side plates 10 are provided with multiple pin holes 6.

[0017] In the preferred embodiment, the side of the pressure plate 7 facing the first arm 1 and the second arm 2 is also provided with a plurality of connecting pins 8, which are used to connect with the pin holes 6.

[0018] In the preferred embodiment, the end face of the second arm 2 has multiple one-way valves 5, which are connected to the opening of the inner cavity 11. The one-way valves 5 are used to inject flame-retardant gas into the inner cavity 11.

[0019] In the preferred embodiment, the flame-retardant gas is carbon dioxide.

[0020] In the preferred embodiment, the pressure plate 7 is provided with a plurality of pressure grooves 9 on the side facing the first support arm 1 and the second support arm 2. The number of pressure grooves 9 corresponds one-to-one with the placement groove 4. The pressure grooves 9 are used to cooperate with the placement groove 4 to clamp the cable 12.

[0021] In the preferred embodiment, the placement groove 4 is arranged in an L-shape on the outside of the first arm 1 and the second arm 2.

[0022] In the preferred embodiment, the adhesive filling the filling groove 3 is epoxy resin.

[0023] The protective sleeve for cable corners is used as follows: First, place the cable 12 to be protected into the L-shaped placement slot 4 on one side of the first arm 1 and the second arm 2. Since the placement slot 4 is L-shaped, it can perfectly fit the bending shape of the cable at the corner, providing a stable placement space for the cable. After placing the cable 12, position the pressure plate 7 towards the first arm 1 and the second arm 2. At this time, the connecting pin 8 on the pressure plate 7 is inserted into the corresponding pin hole 6 on the side plate 10. This connection method fixes the pressure plate 7 to the first arm 1 and the second arm 2. Simultaneously, the pressure grooves 9 on the pressure plate 7, which correspond one-to-one with the placement grooves 4, will cooperate with the placement grooves 4 to clamp the cable 12 from both the top and bottom, preventing the cable from shaking or shifting within the placement grooves 4, further enhancing the cable fixation effect. Next, epoxy resin adhesive is filled into the filling groove 3 on the other side of the first arm 1 and the second arm 2. The epoxy resin adhesive has good adhesion and curing properties. After filling, it can firmly bond the protective sleeve to the mounting surface at the corner of the cable, so that the protective sleeve is stably fixed at the corner position and avoids displacement of the protective sleeve due to external pulling or other reasons.

[0024] Under normal operating conditions, the first arm 1 and the second arm 2 of the protective sleeve provide physical protection for the cable 12 at the corner, resisting mechanical damage such as collisions and friction from the outside. The carbon dioxide flame-retardant gas filled in the multiple cavities 11 inside the first arm 1 and the second arm 2 is in a sealed state, serving as a potential fire safety guarantee.

[0025] When cable 12 at the corner is damaged due to aging, overload, or other reasons, causing high temperatures that may even lead to a fire, the high temperature will gradually damage the protective sleeve. At this time, the protective sleeve's protective mechanism will play a crucial role: As the temperature rises and reaches a certain level, the inner cavity 11 is filled with carbon dioxide flame-retardant gas, which is then released into the online groove. Carbon dioxide gas is denser than air. After being released, it will quickly sink and diffuse, gradually occupying the space in the cable tray and reducing the oxygen content inside. When the oxygen content drops to a certain level, the flame will be unable to sustain combustion, thus effectively preventing the fire from spreading and avoiding further escalation of the cable fire. The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A protective sleeve for use at a cable corner, characterized by: It includes a first arm (1) and a second arm (2), the first arm (1) and the second arm (2) are arranged perpendicularly, and a plurality of placement slots (4) are provided on one side of the first arm (1) and the second arm (2), the placement slots (4) are used to place cables; On the other side of the first arm (1) and the second arm (2), there are multiple filling slots (3) for filling adhesive. The placement slot (4) is provided with a removable pressure plate (7). The first arm (1) and the second arm (2) are provided with multiple inner cavities (11) and the inner cavities (11) are filled with flame-retardant gas.

2. A protective sleeve for cable corners as defined in claim 1, characterized in that: The outermost sides of the first arm (1) and the second arm (2) are also provided with side plates (10), and the side plates (10) are provided with multiple pin holes (6).

3. A protective sleeve for cable corners as defined in claim 1, characterized in that: The pressure plate (7) is also provided with a plurality of connecting pins (8) on the side facing the first arm (1) and the second arm (2), which are used to connect with the pin hole (6).

4. A protective sleeve for cable corners as defined in claim 1, characterized in that: The end face of the second arm (2) has multiple one-way valves (5), which are connected to the opening of the inner cavity (11). The one-way valves (5) are used to inject flame-retardant gas into the inner cavity (11).

5. A protective sleeve for cable corners according to claim 1, characterized in that: The flame-retardant gas is carbon dioxide.

6. A protective sleeve for cable corners as defined in claim 1, characterized in that: The pressure plate (7) is provided with multiple pressure grooves (9) on the side facing the first arm (1) and the second arm (2). The number of pressure grooves (9) corresponds one-to-one with the placement groove (4). The pressure grooves (9) are used to clamp the cable (12) in conjunction with the placement groove (4).

7. A protective sleeve for cable corners as defined in claim 1, characterized in that: The placement slot (4) is arranged in an L-shape on the outside of the first arm (1) and the second arm (2).

8. A protective sleeve for cable corners as defined in claim 1, characterized in that: The adhesive used to fill the filling groove (3) is epoxy resin.

Images