Isolation mineral insulated cable

Abstract

The utility model belongs to the technical field of mineral cables, and particularly relates to an isolated mineral insulated cable which comprises a cable body. Comprising an adapter frame, the adapter frame is located at one end of a cable body, an adapter unit is arranged in the adapter frame, an extension pad with a larger diameter is arranged at one end of the adapter frame, an outer ring frame is arranged on the outer side of the adapter frame and used for extruding the extension pad to enable the inner side of the extension pad to abut against the surface of a ring groove to form sealing, and a sealing block is used for filling a gap in the inner side of the extension pad to enhance the sealing performance; the shrinkage sleeve is located on the outer side of the adapter frame and used for abutting against the outer ring frame to prevent the outer ring frame from reversing and loosening, a protruding boss is arranged on the outer side of the end, away from the cable body, of the adapter frame, and a limiting groove is formed between the boss and the threaded protruding structure at the other end of the adapter frame and used for being in butt joint with a clamping ring on the inner side of the shrinkage sleeve; and the shrinkage sleeve is also used for sealing the connecting part of the adapter frame and the external joint. According to the utility model, the joint part of the cable can be quickly sealed and fixed without hot melting and glue, the operation difficulty is reduced, the convenience is improved, and the construction is simpler and more practical.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mineral cable technical field, especially relate to a isolation mineral insulated cable. BACKGROUND

[0002] The isolation mineral insulated cable is a kind of cable with excellent fireproof, corrosion-resistant, energy-saving and environmental protection etc., and the conductor is usually made of copper, and the copper sheath is wrapped outside.The insulating layer of the cable uses inorganic insulating material, such as magnesium oxide powder or mica tape etc., these materials have the characteristics of high temperature resistance and non-combustion, which provides excellent fireproof performance for the cable.

[0003] At present, mineral cable is found in practical application, the insulating layer of cable is usually composed of mineral magnesium oxide, when the conductor is exposed and contacts with moisture in air, chemical reaction occurs, and magnesium hydroxide that can conduct electricity is generated.This can significantly reduce the insulation resistance of cable, and even cause insulation breakdown, thereby causing electrical fault, which requires strict sealing measures when cable joint is constructed, not only high construction difficulty but also affect overall work efficiency, inconvenient to use.

[0004] To solve the above problems, an isolation mineral insulated cable is provided in the present application. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an isolation mineral insulated cable, which solves the problems raised in the background.

[0006] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0007] The utility model is an isolation mineral insulated cable, which comprises a cable body, an adapter frame located at one end of the cable body, an adapter unit arranged inside the adapter frame, a larger diameter extension pad arranged at one end of the adapter frame, an outer ring frame arranged on the outer side of the adapter frame for extruding the extension pad to make the inner side of the extension pad abut against the surface of the ring groove to form a seal, a sealing block arranged on the inner side of the extension pad for filling the gap to enhance the sealing performance, a shrink sleeve arranged on the outer side of the adapter frame for abutting against the outer ring frame to prevent it from being loosened, a protruding boss arranged on the outer side of the end of the adapter frame away from the cable body, a limiting groove formed between the boss and the threaded protruding structure at the other end of the adapter frame for accommodating the clasp ring on the inner side of the shrink sleeve, and the shrink sleeve is also used for sealing the connection part between the adapter frame and the external joint.

[0008] Further, a ring groove is arranged on the outer side of the end of the cable body adjacent to the adapter frame for accommodating the sealing block to fix the adapter frame.

[0009] Further, a sealing pad is arranged on the inner side of the end of the shrink sleeve away from the cable body for filling the gap between the adapter frame and the external joint.

[0010] Further, one end of the extension pad is provided with a protruding convex ring outside, which is combined with the shrink sleeve to limit the outer ring frame to a fixed area.

[0011] Further, the shrink sleeve is divided into two parts, the head part is used to extrude the extension pad, and the tail part is used to set a spiral unit on the inside and connect the thread structure outside the shrink sleeve.

[0012] Further, the spiral unit is arranged at the tail of the outer ring frame to accommodate the extension pad outside the adapter frame, which is convenient for carrying and assembling.

[0013] Further, the cooperation of the outer ring frame and the extension pad is used to replace the traditional sealing method to achieve the effect of quick sealing and fixing.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses the pressure that the extension pad is added to the adapter frame combined with the outer ring frame, can make that the sealing block is conveniently connected in the annular groove and fills the gap and forms the fastening sealing, makes the moisture in the air unable to erode the cable, can quickly complete the sealing operation after this arrangement, guarantees the sealing performance and effectively reduces the construction difficulty, improves the laying efficiency of cable installation, and uses more conveniently.

[0016] The utility model discloses the shrink sleeve is added and utilizes the clamping ring and the limit slot to form the clamping, can add the sealing of sealing pad when the adapter frame is connected with the external connector, to ensure the stability of connection, and the other end of shrink sleeve is against the outer ring frame, can limit it in a certain area to prevent the reverse loose situation, reach the effect of reinforcing the sealing performance of sealing block.

[0017] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0019] Figure 1 It is the exploded structural schematic view of the adapter frame and the cable body of the utility model;

[0020] Figure 2 It is the combined structural schematic view of the adapter frame and the cable body of the utility model;

[0021] Figure 3This is a schematic diagram of the planar structure of the connection part between the adapter frame and the cable body of this utility model;

[0022] Figure 4 This is a partial structural diagram of the connection between the adapter frame and the cable body of this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] In the diagram: 1. Cable body; 2. Ring groove; 3. Adapter frame; 4. Adapter unit; 5. Outer ring frame; 6. Shrink sleeve; 7. Extension pad; 8. Sealing block; 9. Sealing gasket; 10. Raised ring; 11. Spiral unit; 12. Snap ring; 13. Boss; 14. Limiting groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Please see Figures 1-4 As shown, this utility model is an insulated mineral-insulated cable, including a cable body 1;

[0028] The adapter frame 3 is located at one end of the cable body 1 and has an adapter unit 4 inside. One end of the adapter frame 3 has an extension pad 7 with a larger diameter. The outer side of the adapter frame 3 has an outer ring frame 5 to squeeze the extension pad 7 so that its inner side abuts against the surface of the ring groove 2 to form a seal. The inner side of the extension pad 7 uses a sealing block 8 to fill the gap and enhance the sealing performance. The outer side of the adapter frame 3 adjacent to the cable body 1 has a ring groove 2 for connecting the sealing block 8 to fix the adapter frame 3.

[0029] The shrink sleeve 6 is located outside the adapter frame 3 and is used to prevent the outer ring frame 5 from being loosened in reverse rotation, and the adapter frame 3 is provided with a protruding boss 13 outside the end away from the cable body 1, and a limiting groove 14 is formed between the boss 13 and the threaded protruding structure at the other end of the adapter frame 3, which is used to clamp the snap ring 12 inside the shrink sleeve 6, and the shrink sleeve 6 is also used to seal the connection part of the external joint and the adapter frame 3;

[0030] The cable connection structure provided by the embodiment has simple connection and good sealing performance, the cooperation of the outer ring frame 5 and the extension pad 7 is used to replace the traditional sealing methods such as hot melting and glue injection, so that the quick sealing and fixing effect is achieved, and the outer ring frame 5 is reinforced by the shrink sleeve 6 after sealing, so as to prevent the loosening of the deflection and ensure the sealing stability during long-time use.

[0031] The inner side of the end of the shrink sleeve 6 away from the cable body 1 is provided with a sealing pad 9, which is used to fill the gap between the adapter frame 3 and the external joint, so as to form a double-zone sealing treatment, and facilitate the construction and use of the joint part.

[0032] The shrink sleeve 6 is divided into two parts, the head part is used to extrude the extension pad 7, and the tail part is used to set the spiral unit 11 on the inner side and connect the threaded structure on the outer side of the shrink sleeve 6, the outer side of one end of the extension pad 7 is provided with a protruding convex ring 10, which is combined with the shrink sleeve 6 and used to limit the outer ring frame 5 in the fixed area, so as to avoid the rotation under the influence of external force and ensure the stability of the threaded connection.

[0033] The spiral unit 11 is arranged at the tail of the outer ring frame 5 and is used to accommodate the extension pad 7 outside the adapter frame 3, so as to facilitate the carrying and matched assembly.

[0034] It can be understood that the utility model does not need hot melting and glue to quickly seal and fix the joint part of the cable body 1, reduces the operation difficulty, improves the convenience, and makes the construction simpler and more practical.

[0035] A specific application of the operation flow of the embodiment is as follows: when laying a cable, first, the outer skin of one end of the cable body 1 is peeled off to form a ring groove 2, then the adapter frame 3 is directly butted against the cable body 1, and the outer ring frame 5 is extruded to extend the gasket 7 through the screwing of the screw unit 11, so that the sealing block 8 is inserted into the ring groove 2 and fills the gap to form a seal, and the locking force of the outer ring frame 5 is increased in the way that the one end of the gasket 7 is inclined to increase the diameter, so that the sealing block 8 is tightly extruded to prevent loosening; then the contraction sleeve 6 is stretched and the clasp ring 12 is clamped in the limiting groove 14, at this time, one end of the contraction sleeve 6 seals the connection part of the adapter frame 3 and the external joint, and the other end abuts against the outer ring frame 5, and the convex ring 10 is limited in a certain area and cannot be deflected, so as to prevent the deflection and loosening caused by external force and other factors, so as to maintain the long-term sealing performance of the sealing block 8, the overall construction operation is simple, the working difficulty is effectively reduced, and the working efficiency and the practicability of the device are improved.

[0036] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. An isolated mineral insulated cable, comprising a cable body (1), characterized in that: a transition frame (3) is arranged at one end of the cable body (1) and internally provided with a transition unit (4), one end of the transition frame (3) is provided with an extended pad (7) with a larger diameter, the outer side of the transition frame (3) is provided with an outer ring frame (5) for extruding the extended pad (7) to make the inner side of the extended pad (7) abut against the surface of the ring groove (2) to form a seal, the inner side of the extended pad (7) is provided with a sealing block (8) for filling the gap to enhance the sealing performance; a shrink sleeve (6) is arranged on the outer side of the transition frame (3) for abutting against the outer ring frame (5) to prevent it from being loosened, the outer side of the transition frame (3) away from the one end of the cable body (1) is provided with a protruding boss (13) which forms a limiting groove (14) with the threaded protruding structure at the other end of the transition frame (3) for accommodating the snap ring (12) on the inner side of the shrink sleeve (6), the shrink sleeve (6) is also used for sealing the connection part between the transition frame (3) and the external joint.

2. A segregated mineral insulated electrical cable according to claim 1, characterised in that: The outer side of the one end of the cable body (1) adjacent to the transition frame (3) is provided with a ring groove (2) for abutting against the sealing block (8) to fix the transition frame (3).

3. A segregated mineral insulated electrical cable according to claim 1, characterised in that: The inner side of the one end of the shrink sleeve (6) away from the cable body (1) is provided with a sealing pad (9) for filling the gap between the transition frame (3) and the external joint.

4. A segregated mineral insulated electrical cable according to claim 1, characterised in that: The outer side of one end of the extended pad (7) is provided with a protruding lug (10) which is combined with the shrink sleeve (6) for limiting the outer ring frame (5) in the fixed area.

5. The isolated mineral insulated electrical cable of claim 1, wherein: The shrink sleeve (6) is divided into two parts, the head part is used for extruding the extended pad (7), and the tail part is provided with a helical unit (11) on the inner side for connecting the threaded structure on the outer side of the shrink sleeve (6).

6. A segregated mineral insulated electrical cable according to claim 5, characterised in that: The helical unit (11) is arranged at the tail of the outer ring frame (5) for accommodating the extended pad (7) on the outer side of the transition frame (3) to facilitate carrying and assembling.

Images