CN203813361U - Inflatable sealing device of secondary cable pipeline - Google Patents

Abstract

The utility model relates to an inflatable sealing device for a secondary cable duct. It includes a bag body, film layers attached to both side walls of the bag body, and a film strip connected at one end to the bag body for binding and winding the bag body. The utility model has beneficial effects: it is sealed in an air-inflated manner, and the film layer and the film strip are used to fill the gap formed by the winding of the inflatable sealed bag. The sealing effect is good, the sealing reliability is strong, and the sealing effect is less affected by external factors. The setting of the film layer is used to fill the gap generated between the walls of the winding bag body, and the gap between the bag body and the secondary cable duct. On the one hand, the setting of the film strip is used to bind the wrapped bag body to prevent the bag body from being loose, and on the other hand, it fills the gap between the bag body and the inner wall of the secondary cable duct.

Description

Inflatable Sealing Device for Secondary Cable Conduit

Inflatable type seal for secondary cable ducts.

technical field

The utility model relates to a sealing device, in particular to an inflatable sealing device for a secondary cable duct.

Background technique

Compared with primary cables, secondary cables have the characteristics of small diameter, large quantity, easy to leave gaps between cables, and difficult to seal. The existing common secondary cable duct sealing method is mainly plasticine. Plasticine has the advantages of good sealing and strong plasticity. However, the plasticine seal has the following disadvantages: 1. It needs to be softened by hot water before the sealing operation can be performed. Therefore, it is necessary to carry auxiliary equipment such as an electric kettle during operation; The thermal expansion and contraction will also cause the lack of sealing; 3. It is not resistant to the bite of small animals; 4. It is not very convenient to expand the sealed cable. Therefore, there are relatively large defects in the existing secondary cable duct sealing method.

Contents of the invention

The purpose of this utility model is to solve the above problems existing in the prior art and provide an inflatable sealing device for secondary cable ducts, which is sealed by inflating, and cooperates with the film layer and film strip to fill the gap formed by the winding of the inflatable sealing bag , The sealing effect is good, the sealing reliability is strong, and the sealing effect is less affected by external factors.

The above-mentioned technical purpose of the utility model is mainly solved by the following technical solutions: the inflatable sealing device of the secondary cable duct is characterized in that it includes a bag body, a film layer attached to the two outer walls of the bag body, and one end connected to the The bag body is used to bind the film strips wrapped around the bag body. It adopts the way of inflating to seal, and cooperates with the film layer and film strip to fill the gap formed by the winding of the inflatable sealing bag. The sealing effect is good, the sealing reliability is strong, and the sealing effect is less affected by external factors. The setting of the film layer is used to fill the gap generated between the walls of the winding bag body, and the gap between the bag body and the secondary cable duct. On the one hand, the setting of the film strip is used to bind the wrapped bag body to prevent the bag body from being loose, and on the other hand, it fills the gap between the bag body and the inner wall of the secondary cable duct.

As a further improvement and supplement to the above technical solution, the utility model adopts the following technical measures: the bag body is composed of a three-layer structure, including a metal layer, a silica gel layer and a gum layer from the inside to the outside. The metal layer is provided for added strength to avoid breakage. The silicone layer is set through its own self-sealing property, which can be self-sealing after the inflation tube is pulled out to avoid air leakage. The setting of the gum layer has sufficient flexibility and puncture resistance (bitten by small animals).

In order to facilitate inflation, the bag body is provided with a plug-in inflation tube.

In order to facilitate winding and ensure sufficient length, winding strength and balance of covering degree, the bag is in the shape of a long strip.

The utility model has beneficial effects: it is sealed in an air-inflated manner, and the film layer and the film strip are used to fill the gap formed by the winding of the inflatable sealed bag. The sealing effect is good, the sealing reliability is strong, and the sealing effect is less affected by external factors. The setting of the film layer is used to fill the gap generated between the walls of the winding bag body, and the gap between the bag body and the secondary cable duct. On the one hand, the setting of the film strip is used to bind the wrapped bag body to prevent the bag body from being loose, and on the other hand, it fills the gap between the bag body and the inner wall of the secondary cable duct.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Example: The inflatable sealing device for the secondary cable duct, as shown in Figure 1, includes a long strip bag body 1 (of course other shapes are also feasible, but the long strip shape is the better solution), which is attached to the bag body 1 The film layer 3 on the two outer walls, and the film strip 5 connected to the bag body 1 for binding and wrapping the bag body 1 at one end. The film strip 5 can also cooperate with the bag body 1 by binding. In order to facilitate inflation, the bag body 1 is provided with a plug-in inflation tube 4 .

The bag body 1 is composited with a three-layer structure, and includes a metal layer 11 , a silica gel layer 12 and a rubber layer 13 sequentially from the inside to the outside. The metal layer is provided for added strength to avoid breakage. The silicone layer is set through its own self-sealing property, which can be self-sealing after the inflation tube is pulled out to avoid air leakage. The setting of the gum layer has sufficient flexibility and puncture resistance (bitten by small animals).

The inflatable bag body provides the sealing of the large space between the secondary cable and the wall of the cable duct; the film layer and film strip on the sealing bag provide the sealing of the small space between the secondary cable and the sealing bag, between the bag body and the secondary cable seal.

The sealing device of this patent application not only has a good sealing effect, but also can prevent the intrusion of water, keep the inside of the cable duct dry, and provide a good environment for the operation of the cable; it is also convenient for future expansion and maintenance, light fire prevention, simple structure, easy to assemble and disassemble It is simple; in addition, it can prevent small animals from entering the secondary cable duct to bite the secondary cable skin, avoiding the occurrence of cable grounding and even malfunction of relay protection devices.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. In the above embodiments, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (4)

1. The inflatable sealing device of the secondary cable duct is characterized in that it includes a bag body (1), a film layer (3) attached to the two outer walls of the bag body (1), and one end connected to the bag body (1) Put the film strip (5) for binding the wrapping bag body (1). 2. The inflatable sealing device for secondary cable ducts according to claim 1, characterized in that the bag body (1) is composed of a three-layer structure, which sequentially includes a metal layer, a silica gel layer and a gum layer from the inside to the outside . 3. The inflatable sealing device for secondary cable ducts according to claim 1 or 2, characterized in that the bag body (1) is provided with a pluggable inflatable tube (4). 4. The inflatable sealing device for secondary cable ducts according to claim 3, characterized in that the bag body (1) is elongated.