CN212907140U

CN212907140U - Flexible inorganic mineral insulated fireproof cable

Info

Publication number: CN212907140U
Application number: CN202022033449.1U
Authority: CN
Inventors: 刘行山; 张欢欢
Original assignee: Tianjin Mitun Technology Co ltd
Current assignee: Tianjin Mitun Technology Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-04-06
Anticipated expiration: 2030-09-16

Abstract

The utility model discloses a flexible inorganic mineral insulation fireproof cable, which comprises an outer protective layer, four stranded conductors and an insulating layer, wherein the four stranded conductors are symmetrically arranged inside the outer protective layer in pairs, the insulating layer is arranged outside the stranded conductors, the flexible inorganic mineral insulation fireproof cable also comprises a supporting device, a buffering device, a soft protective layer and a wrapping layer, the supporting device is arranged inside the four stranded conductors, the buffering device is arranged between the supporting device and the stranded conductors, the soft protective layer is arranged inside the outer protective layer, the wrapping layer is arranged inside the soft protective layer, the flexible inorganic mineral insulation fireproof cable has the advantages that the supporting device is matched with the buffering device, the flexible inorganic mineral insulation fireproof cable has good impact resistance, can generate certain protection on the stranded conductors when being impacted, is provided with the copper soft protective layer, and has good fireproof performance, and it has good mechanical impact resistance and water resistance under fire conditions.

Description

Flexible inorganic mineral insulated fireproof cable

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a flexible inorganic mineral insulation fireproof cable is related to.

Background

In the prior art, fireproof cables used in the market have two types of rigidity and flexibility, the two types of cables both use magnesium oxide as insulation, wherein a copper pipe is wrapped outside the rigid fireproof cable and is formed by multiple drawing processes and pressing; the flexible fireproof cable is rolled into a spiral shape outside the rigid cable copper pipe. The rigid fireproof cable is a first-generation product, and the flexible fireproof cable is a second-generation product. The two cables are applied to the market for many years, but with the development of times and technological progress, the cable in the prior art cannot meet the requirement of the development of the modernization process, such as the multi-core long-length cables in places such as skyscrapers, tunnels, airports and the like are increasingly required, the fire-resistant time of the cables is required to be long in the places, and the cables cannot meet the modern requirement by the original old process for production.

The application numbers are: 201922213460.3 discloses an inorganic mineral insulated flexible fireproof cable, including the outer jacket, the inside of outer jacket is provided with the fire barrier, the separation sleeve has been cup jointed to the inside on fire barrier, the fixed conductor that has cup jointed in the inside of separation sleeve, the outside of conductor is equipped with the insulating layer. However, the flexible fireproof cable has poor impact resistance, is easy to damage or even break the stranded conductor when being impacted, and has poor mechanical impact resistance and water resistance under fire conditions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flexible inorganic mineral insulation fireproof cable.

In order to achieve the above object, the present invention provides a technical solution:

the utility model provides a flexible inorganic mineral insulation fireproof cable, includes outer jacket, stranded conductor and insulating layer, the stranded conductor has four, four stranded conductor sets up two bisymmetry ground the outer jacket is inboard, the insulating layer is located the stranded conductor outside still includes strutting arrangement, buffer, soft sheath and around the covering, strutting arrangement is located four stranded conductor is inboard, buffer is located strutting arrangement and between the stranded conductor, soft sheath is located the outer jacket is inboard, lie in around the covering soft sheath is inboard.

The supporting device is a supporting frame, the supporting frame is a cross-shaped supporting frame, the supporting frame corresponds to four stranded conductors and is arranged in the middle of the inner side of the outer protective layer, and a through hole is formed in the middle of the supporting frame.

Buffer includes buffer spring and buffering backplate, buffer spring has four, four buffer spring corresponds the support frame cover and establishes in the support frame outside, buffer spring's one end articulates with the through-hole at support frame middle part, the buffering backplate has four, four the buffering backplate corresponds four the stranded conductor sets up respectively four the buffer spring other end and its one end with buffer spring fixed connection, the other end of buffering backplate with the insulating layer butt, the buffering backplate is the arc.

The soft protective layer is a copper soft sheath, and the copper soft sheath is sleeved on the outer side of the wrapping layer.

The winding layer is a mineral winding tape, and the four stranded conductors are sleeved with the mineral winding tape.

The outer jacket is a plastic outer jacket, and the plastic outer jacket is sleeved on the outer side of the soft protective layer.

The stranded conductor is formed by stranding a plurality of strands of copper wires.

The insulating layer is inorganic mineral substance insulating layer, and there are four inorganic mineral substance insulating layers, four inorganic mineral substance insulating layers cover respectively and are established four stranded conductor outsides.

The supporting devices and the buffer devices are provided with a plurality of supporting devices and a plurality of buffer devices which are uniformly arranged on the inner sides of the four stranded conductors at intervals.

Still include the filling layer, the filling layer is the mineral substance filling layer, the filling layer is located around the covering inboard, just the filling layer is filled in the stranded conductor outside in the clearance between the insulating layer and parcel the insulating layer.

The utility model has the advantages that:

through strutting arrangement and buffer cooperation, have good shock resistance to can produce certain protection to the stranded conductor when receiving the impact, be equipped with copper soft sheath, make this cable have good fire resistance, and it has good anti mechanical shock and waterproof performance under the condition of a fire, be equipped with inorganic mineral substance insulating layer, can not add any additional measure during laying, and inorganic mineral substance insulating layer and inorganic mineral substance are around the covering under the conflagration condition, can not produce acid gas.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. an outer jacket; 2. a stranded conductor; 3. an insulating layer; 4. a support device; 5. a buffer device; 6. A soft protective layer; 7. wrapping a covering; 8. a buffer spring; 9. buffering the guard plate; 10. and (5) filling the layer.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings,

the utility model provides a flexible inorganic mineral insulation fireproof cable, includes outer jacket, transposition conductor and insulating layer, and the transposition conductor has four, and four transposition conductors set up at outer jacket inboard two bisymmetries, and the insulating layer is located the transposition conductor outside, still includes strutting arrangement, buffer, soft sheath and around the covering, and strutting arrangement is located four transposition conductor inboardly, and buffer is located between strutting arrangement and the transposition conductor, and soft sheath is located the outer jacket inboardly, and it is inboard to be located soft sheath around the covering, the utility model discloses overall structure schematic diagram is as shown in FIG. 1.

Strutting arrangement is the support frame, and the support frame is the cross support frame, and the support frame corresponds four stranded conductor settings and is being equipped with the through-hole in the middle part of the outer sheath inboard middle part, and strutting arrangement passes through the support frame and plays the supporting role to buffer, and wherein, the stability of cross support frame is strong, can cushion the support with cooperation buffer as buffer's base to the stranded conductor.

The buffer device comprises four buffer springs and four buffer guard plates, the four buffer springs are sleeved outside the support frame corresponding to the support frame, one ends of the buffer springs are hung with the through holes in the middle of the support frame, the four buffer guard plates are provided with four pieces, the four buffer guard plates are respectively arranged at the other ends of the four buffer springs corresponding to the four stranded conductors, one ends of the four buffer springs are fixedly connected with the buffer springs, the other ends of the buffer guard plates are abutted against the insulating layer, the buffer guard plates are arc-shaped plates, and the buffer device is matched with the buffer guard plates through the buffer springs, plays a role in buffering the stranded conductor and the insulating layer, can protect the stranded conductor to a certain extent when being impacted, prevents the stranded conductor from being broken, wherein, buffer spring is used for connecting buffering backplate and support frame to play the cushioning effect to the stranded conductor, arc buffering backplate laminating stranded conductor and insulating layer provide the protection for stranded conductor and insulating layer.

The soft protective layer is a copper soft sheath, the copper soft sheath is sleeved on the outer side of the wrapping layer, and the copper soft sheath has good conductivity, mechanical impact resistance and flexible bending performance and can replace a ground wire.

The wrapping layer is a mineral wrapping tape, the mineral wrapping tape is sleeved on the outer sides of the four stranded conductors, and the mineral wrapping tape is made of inorganic materials, so that acid gas cannot be generated under the condition of fire.

The outer jacket is a plastic outer jacket, the plastic outer jacket is sleeved outside the soft protective layer, the plastic outer jacket has the characteristics of low smoke and no toxicity, and the plastic outer jacket has good corrosion resistance and can be made of different materials according to specific use conditions.

The stranded conductor is formed by stranding a plurality of strands of copper wires, and the stranded cable conductor has good bending property.

The insulating layer is inorganic mineral substance insulating layer, and there are four inorganic mineral substance insulating layers, and four inorganic mineral substance insulating layers overlap respectively and establish four stranded conductor outsides, and inorganic mineral substance insulating layer can not add any additional measure when laying.

The supporting device and the buffering device are provided with a plurality of supporting devices and buffering devices which are arranged inside the four stranded conductors at uniform intervals, and the supporting devices and the buffering devices are matched to play a role in buffering and supporting the whole cable.

Still include the filling layer, the filling layer is the mineral substance filling layer, and the filling layer is located around the covering inboard, and the filling layer fills in the clearance between the insulating layer in the stranded conductor outside and parcel insulating layer, and the fire behavior of cable can further be strengthened to the mineral substance filling layer.

The beneficial effects of the utility model are that cooperate through strutting arrangement and buffer, good shock resistance has, and can produce certain protection to the stranded conductor when receiving the impact, be equipped with copper soft sheath, make this cable have good fire resistance, and it has good anti mechanical shock and waterproof performance under the condition of a fire, be equipped with inorganic mineral substance insulating layer, can not add any additional measure when laying, and inorganic mineral substance insulating layer and inorganic mineral substance are around the covering under the conflagration condition, can not produce acid gas.

While one embodiment of the present invention has been described in detail, the present invention is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a flexible inorganic mineral insulation fireproof cable, includes outer jacket (1), stranded conductor (2) and insulating layer (3), stranded conductor (2) have four, four stranded conductor (2) set up two liang of symmetry outer jacket (1) is inboard, insulating layer (3) are located stranded conductor (2) outside, its characterized in that still includes strutting arrangement (4), buffer (5), soft sheath (6) and winds covering (7), strutting arrangement (4) are located four stranded conductor (2) are inboard, buffer (5) are located strutting arrangement (4) and between stranded conductor (2), soft sheath (6) are located outer jacket (1) is inboard, it is located to wind covering (7) soft sheath (6) are inboard.

2. The flexible inorganic mineral insulated fireproof cable according to claim 1, wherein the support device (4) is a cross support, the support is arranged in the middle of the inner side of the outer sheath (1) corresponding to the four stranded conductors (2), and a through hole is formed in the middle of the support.

3. The flexible inorganic mineral insulation fireproof cable of claim 2, wherein the buffer device (5) comprises four buffer springs (8) and four buffer guard plates (9), the four buffer springs (8) are sleeved outside the support frame corresponding to the support frame, one end of each buffer spring (8) is hooked with a through hole in the middle of the support frame, the four buffer guard plates (9) are provided with four buffer guard plates (9) corresponding to the four stranded conductors (2) respectively arranged at the other ends of the four buffer springs (8) and one ends of the four stranded conductors are fixedly connected with the buffer springs (8), the other ends of the buffer guard plates (9) are abutted to the insulating layer (3), and the buffer guard plates (9) are arc-shaped plates.

4. The flexible inorganic mineral insulated fireproof cable according to claim 1, wherein the soft sheath (6) is a copper soft sheath, and the copper soft sheath is sleeved outside the wrapping layer (7).

5. The flexible inorganic mineral insulated fireproof cable according to claim 1, wherein the wrapping layer (7) is a mineral wrapping tape, and the mineral wrapping tape is sleeved on the outer sides of the four stranded conductors (2).

6. The flexible inorganic mineral insulated fireproof cable according to claim 1, wherein the outer sheath (1) is a plastic outer sheath, and the plastic outer sheath is disposed outside the soft sheath (6).

7. A flexible inorganic mineral insulated fireproof cable according to claim 1, wherein the stranded conductor (2) is formed by stranding a plurality of copper wires.

8. The flexible inorganic mineral insulated fireproof cable according to claim 1, wherein the insulating layer (3) is four inorganic mineral insulating layers, and the four inorganic mineral insulating layers are respectively sleeved on the outer sides of the four stranded conductors (2).

9. A flexible inorganic mineral insulated fireproof cable according to claim 3, wherein there are several support means (4) and several buffer means (5), and several support means (4) and several buffer means (5) are evenly spaced inside four of the stranded conductors (2).

10. A flexible inorganic mineral insulated fireproof cable according to claim 1, further comprising a filler layer (10), wherein the filler layer (10) is a mineral filler layer, the filler layer (10) is located inside the wrapping layer (7), and the filler layer (10) is filled in the gap between the insulating layers (3) outside the stranded conductor (2) and wraps the insulating layers (3).