CN110665153A

CN110665153A - Power cable ditch firebreak device

Info

Publication number: CN110665153A
Application number: CN201910778062.8A
Authority: CN
Inventors: 张瑞昌; 顾士友; 刘元建
Original assignee: Shandong Rouen Electric Co Ltd
Current assignee: Shandong Rouen Electric Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-01-10

Abstract

The invention discloses a power cable trench fireproof device which is arranged in a cable trench and comprises a plurality of brackets arranged at the bottom of the cable trench and used for accommodating a cable joint part, wherein each bracket is of a U-shaped structure with an upward opening, the top of the cable trench above each bracket is provided with a sand storage box, fine dry sand is stored in each sand storage box, the bottom of each sand storage box vertically extends downwards to form a sand outlet pipe, the bottom of each sand outlet pipe is provided with a sand outlet positioned above the opening at the top of the bracket, a blocking cover is arranged at the sand outlet, one end of each blocking cover is hinged with the corresponding sand outlet pipe, the other end of each blocking cover and the corresponding sand outlet pipe are provided with a matched locking ring, and a temperature-sensitive cable memory alloy wire which is used for fastening the locking ring and can be fused at high temperature. The invention has the beneficial effects that: simple structure, the fire control effect is good, and is with low costs, can keep the fire control effect for a long time, does not have the restriction of effective time, has saved the cost, the management of being convenient for.

Description

Power cable ditch firebreak device

Technical Field

The invention relates to a power cable trench fireproof device.

Background

At present, in the remote laying of multiple cables such as power cables, communication cables and the like, a method for laying through a cable trench is widely applied, but various cables arranged in the cable trench are large in quantity and high in space density, particularly, a cable joint part is easy to generate high temperature to cause fire, the management of the cable trench at present is completely carried out by manual inspection, after the cables are fired, a fire point cannot be found in the first time, the timely fire extinguishing cannot be carried out, once one cable is fired, the fire is easy to spread to other cables or electric equipment, so that serious electric accidents are caused, indirect damages such as fire disasters and the like are caused in serious cases, the harm is huge, although some fire extinguishing devices are arranged at present, the effective period of a certain time generally exists, the fire extinguishing effect is difficult to be achieved after the effective period, and therefore, the fire extinguishing equipment needs to be updated in a certain time, and is inconvenient to manage.

Disclosure of Invention

In order to solve the technical defects, the invention provides a power cable trench fireproof device

The invention is realized by the following measures:

the invention discloses a power cable trench fireproof device which is arranged in a cable trench and comprises a plurality of brackets arranged at the bottom of the cable trench and used for accommodating a cable joint part, wherein each bracket is of a U-shaped structure with an upward opening, the top of the cable trench above each bracket is provided with a sand storage box, fine dry sand is stored in each sand storage box, the bottom of each sand storage box vertically extends downwards to form a sand outlet pipe, the bottom of each sand outlet pipe is provided with a sand outlet positioned above the opening at the top of the bracket, a blocking cover is arranged at the sand outlet, one end of each blocking cover is hinged with the corresponding sand outlet pipe, the other end of each blocking cover and the corresponding sand outlet pipe are provided with a locking ring which is matched with each other, and a temperature-sensitive cable memory alloy wire which is used for fastening the locking ring and can be fused at high temperature.

The top of the sand storage box extends outwards to form an ear plate, and the ear plate is fixed with the top of the cable duct through a bolt.

The bottom of the sand storage box is provided with a convex box bottom, and the top of the sand outlet pipe is integrally connected to the center of the box bottom and communicated with the sand storage box.

The sand outlet pipe is cylindrical, and the diameter of the sand outlet pipe is smaller than the width of the bracket.

The invention has the beneficial effects that: simple structure, the fire control effect is good, and is with low costs, can keep the fire control effect for a long time, does not have the restriction of effective time, has saved the cost, the management of being convenient for.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a right-view structural diagram of fig. 1.

Wherein: the sand box comprises a sand storage box 1, a sand outlet pipe 2, a bracket 3, a blocking cover 4, a locking ring 5, a temperature sensing cable memory alloy wire 6, an ear plate 7 and a cable joint 8.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1 and 2, the power cable trench fire protection device is arranged in a cable trench and comprises a plurality of brackets 3 arranged at the bottom of the cable trench and used for accommodating cable joints 8, each bracket 3 is of a U-shaped structure with an upward opening, a sand storage box 1 is arranged at the top of the cable trench above each bracket 3, fine dry sand is stored in each sand storage box 1, a sand outlet pipe 2 vertically extends downwards from the bottom of each sand storage box 1, a sand outlet positioned above the opening at the top of each bracket 3 is arranged at the bottom of each sand outlet pipe 2, a blocking cover 4 is arranged at the sand outlet, one end of each blocking cover 4 is hinged to the corresponding sand outlet pipe 2, a locking ring 5 matched with the other end of each blocking cover 4 and the corresponding sand outlet pipe 2 are arranged, and a temperature-sensitive cable memory alloy wire 6 which is used for fastening the locking ring 5 and can be fused at high temperature is wound on each.

The top of the sand storage box 1 extends outwards to form an ear plate 7, and the ear plate 7 is fixed with the top of the cable duct through a bolt. The bottom of the sand storage box 1 is provided with a convex bottom, and the top of the sand outlet pipe 2 is integrally connected with the center of the bottom and communicated with the sand storage box 1. The sand outlet pipe 2 is cylindrical, and the diameter of the sand outlet pipe 2 is smaller than the width of the bracket 3.

The working principle is as follows: when cable joint 8 produced high temperature, can be with 6 fuses of temperature sensing cable memory alloy silk to shutoff lid 4 is opened, and the fine dry sand in the storage sandbox 1 can be followed out husky pipe 2 outflow, and fine dry sand can directly fall in bracket 3, thereby fine dry sand can bury cable joint 8 in the inside, and cable joint 8 behind the isolated air just can not catch fire, thereby plays the effect of putting out a fire.

The foregoing is only a preferred embodiment of this patent, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of this patent, and these modifications and substitutions should also be regarded as the protection scope of this patent.

Claims

1. The utility model provides a power cable ditch firebreak device, sets up in the cable pit, its characterized in that: the sand outlet pipe is characterized by comprising a plurality of brackets which are arranged at the bottom of a cable duct and used for containing cable joint parts, wherein the brackets are of U-shaped structures with upward openings, a sand storage box is arranged at the top of the cable duct above each bracket, fine dry sand is stored in the sand storage box, a sand outlet pipe vertically and downwardly extends from the bottom of the sand storage box, a sand outlet positioned above the opening at the top of each bracket is arranged at the bottom of the sand outlet pipe, a blocking cover is arranged at the sand outlet, one end of the blocking cover is hinged to the sand outlet pipe, a matched locking ring is arranged at the other end of the blocking cover and the sand outlet pipe, and a temperature sensing cable memory alloy wire used for fastening the locking ring and capable of being fused at high temperature is wound on.

2. The power cable trench fire protection device of claim 1, wherein: the top of the sand storage box extends outwards to form an ear plate, and the ear plate is fixed with the top of the cable duct through a bolt.

3. The power cable trench fire protection device of claim 1, wherein: the bottom of the sand storage box is provided with a convex bottom, and the top of the sand outlet pipe is integrally connected to the center of the bottom and communicated with the sand storage box.

4. The power cable trench fire protection device of claim 1, wherein: the sand outlet pipe is cylindrical, and the diameter of the sand outlet pipe is smaller than the width of the bracket.