Airbag protected medium voltage fire resistant cable

Abstract

The utility model belongs to cable protection application technical field, specifically disclose air bag protection medium pressure fireproof cable, including the pipe hole of going through the wall, a plurality of medium pressure fireproof cable, outer protection pipe body, anti extrusion part, waterproof tape, fireproof tape, inflatable air bag and take sealed blanking head air pipe, wherein, the both ends of inflatable air bag do not protrude outer protection pipe body. The utility model has the advantages of: 1, effectively resist impact, solve the hidden trouble problem that deformation under external impact causes cable, can absorb the kinetic energy that impact brings, guarantee the integrity of cable, 2, be applicable to multiple or single cable, combination use is flexible, easy to install, and with traditional joint and terminal are fully compatible, 3, can provide better mechanical protection than traditional metal armored cable with lower cost, can also maintain the functional advantage of unarmored cable, and the structure is reasonable, practical.

Description

Technical Field

[0001] This utility model belongs to the field of cable protection application technology, specifically relating to airbag-protected medium-voltage fireproof cables. Background Technology

[0002] Medium-voltage fire-resistant cables are mainly used in power supply systems of super high-rise buildings, rail transit and power grid systems in places with fire resistance requirements.

[0003] During the laying of medium-voltage fire-resistant cables, to ensure the reliability of cable operations, it is necessary to consider the safety hazards posed by external deformation and impacts to the cables, and to prevent residual energy from damaging sensitive components of the cable, such as the insulator and shield. Damage to the metal armor is also a concern, as it may compromise the integrity of the insulator, leading to a reduction in its long-term reliability.

[0004] Therefore, based on the above problems, this utility model provides an airbag-protected medium-voltage fireproof cable. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to provide an airbag-protected medium-voltage fireproof cable to solve the technical problems existing in the background art.

[0006] Technical Solution: The airbag-protected medium-voltage fireproof cable provided by this utility model includes a wall-penetrating pipe hole and a plurality of medium-voltage fireproof cables. An outer protective tube is provided inside the wall-penetrating pipe hole, and an anti-compression part is provided inside the outer protective tube. The plurality of medium-voltage fireproof cables are spaced apart on the anti-compression part. Waterproof tape is evenly wrapped around the outer wall of the plurality of medium-voltage fireproof cables, and fireproof tape is evenly wrapped around the outer wall of the waterproof tape. An inflatable airbag is provided between the outer protective tube and the fireproof tape, and an air tube with a sealing plug is provided on the inflatable airbag. The two ends of the inflatable airbag do not protrude from the outer protective tube.

[0007] In this technical solution, the anti-squeezing part is composed of an intermediate tube, an outer partition tube, and a transition plate. The transition plate is evenly distributed on the outer wall of the intermediate tube, and the outer partition tube is connected to one end of each transition plate. The intermediate tube and the outer partition tube are hollow tubes or solid tubes, respectively.

[0008] In this technical solution, the outer protective tube is a plastic tube, a metal tube, or a fiberglass tube, used to be inserted into the wall penetration hole of a building; wherein, the outer protective tube is circular or elliptical.

[0009] In this technical solution, the waterproof tape is any one of natural rubber tape, butyl rubber tape, ethylene propylene rubber tape, and silicone rubber tape.

[0010] In this technical solution, the fireproof tape is any one of fiberglass fireproof tape, silicone rubber fireproof tape, and aluminum foil fireproof tape.

[0011] Compared with existing technologies, the beneficial effects of this utility model of airbag-protected medium-voltage fireproof cable are as follows: 1. It effectively resists impact, solves the hidden dangers caused by deformation of the cable under external impact, absorbs the kinetic energy brought by the impact, and ensures the integrity of the cable; 2. It is suitable for multiple or single cables, and its combination is flexible and easy to install, and it is fully compatible with traditional connectors and terminals; 3. It can provide better mechanical protection than traditional metal armored cables at a lower cost, while maintaining the functional advantages of unarmored cables, and its structure is reasonable and practical. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the main structure of the airbag-protected medium-voltage fireproof cable of this utility model; Figure 2 This is a schematic diagram of the anti-crushing part of the airbag-protected medium-voltage fireproof cable of this utility model; Figure 3 yes Figure 2 A schematic diagram of the connection structure of the intermediate tube, the outer diaphragm tube, and the transition plate; Figure 4 yes Figure 2 A schematic diagram of another embodiment of the anti-squeezing part; The numbers in the diagram are as follows: 100-wall penetration hole, 200-medium voltage fireproof cable, 300-anti-crushing part, 10-outer protective pipe body, 11-inflatable airbag, 111-air pipe with sealing plug, 12-waterproof tape, 13-fireproof tape, 14-intermediate pipe body, 15-outer partition pipe body, 16-transition plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] Example 1 like Figure 1 , Figure 2 and Figure 3 The airbag-protected medium-voltage fireproof cable shown includes a wall-penetrating conduit 100 and several medium-voltage fireproof cables 200 (four cables). An outer protective pipe body 10 is installed inside the through-wall pipe hole 100. An anti-crushing part 300 is provided inside the outer protective tube body 10. Several medium-voltage fire-resistant cables 200 are spaced apart on the anti-crushing part 300. Several medium-voltage fireproof cables 200 have waterproof tape 12 evenly wrapped around their outer walls. Fireproof tape 13 is evenly wrapped around the outer wall of the waterproof tape 12. An inflatable airbag 11 is provided between the outer protective tube 10 and the fireproof tape 13. The inflatable airbag 11 is equipped with an air tube 111 with a sealed plug; The inflatable airbag 11 has no protrusions at either end of the outer protective tube 10.

[0017] The working or structural principle is as follows: First, several medium-voltage fireproof cables 200 are placed on the anti-compression part 300; then, waterproof tape 12 is wrapped around the surface of the several medium-voltage fireproof cables 200, and then fireproof tape 13 is wrapped around the surface of the waterproof tape 12; finally, the fireproof tape 13, waterproof tape 12, several medium-voltage fireproof cables 200 and anti-compression part 300 are covered by an inflatable airbag 11, and the inflatable airbag 11 is placed inside the outer protective tube 10. At this time, the outer protective tube 10 is inserted into the wall penetration hole 100 (the outer protective tube 10 and the wall penetration hole 100 are sealed and fixed with construction adhesive). In this way, the inflatable airbag 11 can be inflated by the inflation device through the air pipe 111 with the sealed plug.

[0018] In addition, the anti-squeezing part 300 is preferably composed of an intermediate tube 14, an outer partition tube 15 and a transition plate 16. The transition plate 16 is evenly distributed on the outer wall of the intermediate tube 14, and the outer partition tube 15 is connected to one end of the transition plate (16). The intermediate tube 14 and the outer partition tube 15 are hollow tubes or solid tubes, respectively, and are made of integrally molded plastic material. This prevents the mutual squeezing between several medium-voltage fireproof cables 200, and extends their service life and safety.

[0019] In addition, the outer protective tube 10 is preferably made of plastic, metal or fiberglass, and is used to insert into the wall-penetrating pipe hole 100 of the building to provide initial protection for the fireproof tape 13, waterproof tape 12, several medium-voltage fireproof cables 200 and anti-squeezing part 300 located inside it; wherein, the outer protective tube 10 is circular or elliptical to suit different cable laying and assembly sites.

[0020] In addition, the waterproof tape 12 is preferably any one of natural rubber tape, butyl rubber tape, ethylene propylene rubber tape and silicone rubber tape, which has good self-adhesion, waterproof sealing and insulation properties, etc. Different suitable waterproof tapes are selected for different cable laying and assembly sites.

[0021] In addition, the fireproof tape 13 is preferably any one of glass fiber fireproof tape, silicone rubber fireproof tape, and aluminum foil fireproof tape, which has good chemical properties. Different fireproof tapes are selected for different cable laying and assembly sites.

[0022] like Figure 4 The image shows another structure of the anti-crushing part 300, which is adapted to the laying and protection construction of three medium-voltage fireproof cables 200.

[0023] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An airbag-protected medium-voltage fireproof cable, comprising a wall-penetrating conduit (100) and several medium-voltage fireproof cables (200), characterized in that: An outer protective pipe body (10) is provided inside the through-wall pipe hole (100). The outer protective tube (10) is provided with an anti-squeezing part (300). The plurality of medium-voltage fire-resistant cables (200) are spaced apart on the anti-crushing part (300). The outer walls of the plurality of medium-voltage fireproof cables (200) are uniformly wrapped with waterproof tape (12). The outer wall of the waterproof tape (12) is evenly wrapped with fireproof tape (13). An inflatable airbag (11) is provided between the outer protective tube (10) and the fireproof tape (13). The inflatable airbag (11) is provided with an air tube (111) with a sealed plug. The inflatable airbag (11) has no protrusions at either end of the outer protective tube (10).

2. The airbag-protected medium-voltage fireproof cable according to claim 1, characterized in that: The anti-squeezing part (300) is composed of an intermediate tube (14), an outer partition tube (15) and a transition plate (16). The transition plate (16) is evenly distributed on the outer wall of the intermediate tube (14), and the outer partition tube (15) is connected to one end of the transition plate (16). Among them, the middle tube (14) and the outer diaphragm tube (15) are hollow tubes or solid tubes, respectively.

3. The airbag-protected medium-voltage fireproof cable according to claim 1, characterized in that: The outer protective tube (10) is a plastic tube, a metal tube, or a fiberglass tube, used to be inserted into the wall-penetrating pipe hole (100) of the building; The outer protective tube (10) is circular or elliptical.

4. The airbag-protected medium-voltage fireproof cable according to claim 1, characterized in that: The waterproof tape (12) is any one of natural rubber tape, butyl rubber tape, ethylene propylene rubber tape and silicone rubber tape.

5. The airbag-protected medium-voltage fireproof cable according to claim 1, characterized in that: The fireproof tape (13) is any one of glass fiber fireproof tape, silicone rubber fireproof tape, and aluminum foil fireproof tape.

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