CN214589269U - Flexible joint of polyvinyl chloride cable - Google Patents

Abstract

The utility model relates to the technical field of cables, concretely relates to flexible joint of polyvinyl chloride cable aims at solving complex environment and can seriously influence the cable flexible joint life-span, leads to the not enough problem of wiring department joint strength, including two cable wires with the specification, cable conductor's cable core passes through a welding fixed connection, and the junction constitutes sinle silk connecting portion, sinle silk connecting portion have set gradually conductor shield, insulating layer, insulation barrier and sheath outward, the sheath both ends are connected with cable conductor through the mounting respectively. The utility model discloses utilize conductor shield, insulating layer, insulation shield to vulcanize respectively with cable conductor's reservation section and merge, the sheath both ends are connected with cable conductor through the mounting respectively to this security and the reliability of guaranteeing cable junction, and make the joint design reach the mechanical properties and the electrical property that are close mutually with the cable body.

Description

Flexible joint of polyvinyl chloride cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to flexible joint of polyvinyl chloride cable.

Background

A cable is a power or signal transmission device, and is generally composed of several wires or groups of wires. The cable connector is also called a cable head. After the cable is laid, the sections of the cable must be connected together in order to form a continuous line, and these connections are called cable connectors. The cable joints at the middle of the cable run are called intermediate joints and the cable joints at the two ends of the run are called termination joints. The cable joint is used for locking and fixing the incoming and outgoing lines, and plays a role in water resistance, dust prevention and vibration prevention.

In some cases, for example, in the power supply engineering of a long submarine cable, the length of a single cable is less than the total length of the required cable, so that a plurality of cables need to be connected through a flexible cable joint, and the complex environment can seriously affect the service life of the flexible cable joint, resulting in the problem of insufficient connection strength at the connection position.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims at providing a flexible joint of polyvinyl chloride cable solves the complex environment and can seriously influence the cable flexible joint life-span, leads to the not enough problem of wiring department joint strength.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a flexible joint of polyvinyl chloride cable, includes two cable conductor with the specification, cable conductor's cable core passes through welding piece fixed connection, and the junction constitutes sinle silk connecting portion, sinle silk connecting portion have set gradually conductor shield, insulating layer, insulation shield and sheath outward, the sheath both ends are connected with cable conductor through the mounting respectively.

Optionally, the sheath is a hollow lead pipe sheath, and a silica gel isolation layer is arranged in the hollow lead pipe sheath.

Optionally, the mounting includes the sealing washer that sets up with the sheath is integrative, be equipped with two assorted semicircle rings on the sealing washer, semicircle ring one side is rotated through the pivot and is connected, the semicircle ring opposite side is outwards buckled and is had the ear of rolling over, passes the ear of rolling over be equipped with locking screw and with locking screw complex lock nut.

Optionally, the seal ring is a rubber seal ring.

Optionally, a plurality of cavities which are uniformly distributed are arranged in the sealing ring, and a spring which is stressed in a direction perpendicular to the central axis of the sealing ring is placed in each cavity.

The utility model has the advantages that:

1. the utility model discloses a soft joint has set gradually conductor shield, insulating layer, insulation shield and sheath outside the core connecting portion, and wherein conductor shield, insulating layer, insulation shield vulcanize with cable conductor's reservation section respectively and merge, and the sheath both ends are connected with cable conductor through the mounting respectively to this security and the reliability of guaranteeing cable junction, and make joint design reach the mechanical properties and the electrical property that are close mutually with the cable body.

2. The utility model discloses a soft joint, sheath are cavity lead pipe sheath, and vacuum perfusion has the silica gel isolation layer in this cavity lead pipe sheath to reduce impurity and gas clearance's existence, and increase connection structure's seal, reinforcing insulating properties, it is more firm.

3. The utility model discloses a soft joint, the setting of mounting, the size in adjustable clamping space realizes that the sheath is fixed with the locking of cable conductor to guarantee the leakproofness of sealing washer, convenient, swift simultaneously, the work efficiency when effectively improving the installation.

4. The utility model discloses a soft joint, the setting of cavity and spring for the sealing washer still can keep elasticity after the oxidation, thereby further prolongs its life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a flexible joint of a polyvinyl chloride cable according to an embodiment of the present invention.

Description of reference numerals:

1. a cable conductor; 2. a wire core connecting portion; 3. a conductor shield; 4. an insulating layer; 5. insulating shielding; 6. a sheath; 7. a fixing member; 71. a seal ring; 72. a semicircular ring; 73. ear folding; 74. a cavity; 75. a spring; 8. a silicone gel isolation layer.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

A flexible joint of a polyvinyl chloride cable is shown in figure 1 and comprises two polyvinyl chloride cable leads 1 with the same specification, cable cores of the cable leads 1 are fixedly connected through welding parts, and the joint of the cable leads forms a wire core connecting part 2. In order to improve the structural strength of the wire core connecting part 2, specifically, a conductor shield 3, an insulating layer 4, an insulating shield 5 and a sheath 6 are sequentially arranged outside the wire core connecting part 2, wherein the conductor shield 3, the insulating layer 4 and the insulating shield 5 are respectively vulcanized and fused with a reserved section of the cable conductor 1, and two ends of the sheath 6 are respectively connected with the cable conductor 1 through fixing parts 7, so that the safety and reliability of cable connection are ensured, and the joint structure achieves the mechanical property and the electrical property which are close to those of the cable body.

As shown in fig. 1, the sheath 6 is a hollow lead pipe sheath, and a silica gel isolation layer 8 is filled in the hollow lead pipe sheath in a vacuum manner, so that the existence of impurities and gas gaps is reduced, the tightness of the connection structure is improved, the insulation performance is enhanced, and the connection structure is firmer.

As shown in fig. 1, the fixing element 7 includes a sealing ring 71 integrally disposed with the sheath 6, the sealing ring 71 is sleeved with two matching semicircular rings 72, one side of each semicircular ring 72 is rotatably connected through a rotating shaft, the other side of each semicircular ring 72 is bent outward to form a folding lug 73, and a locking screw and a locking nut (not shown) matched with the locking screw are fixed through the folding lug 73. The size of the clamping space is adjusted through the structure, the sheath 6 and the cable conductor 1 are locked and fixed, the sealing performance of the sealing ring 71 is guaranteed, convenience and rapidness are achieved, and the working efficiency during installation is effectively improved.

As shown in fig. 1, the sealing ring 71 is a rubber sealing ring, which has a good anti-leakage effect, and in this embodiment, the rubber sealing ring is made of neoprene or epdm, which has the advantages of high strength, good elastic effect, and low wear resistance, thereby greatly prolonging the service life of the sealing ring 71.

As shown in fig. 1, a plurality of cavities 74 are uniformly distributed in the sealing ring 71, and a spring 75 is placed in each cavity 74, wherein the force direction of the spring is perpendicular to the central axis of the sealing ring 71, so that the sealing ring 71 can still keep elasticity after being oxidized, and the service life of the sealing ring is further prolonged.

The working principle of the flexible joint of the polyvinyl chloride cable is as follows: conductor shield 3, insulating layer 4, insulation shield 5 and sheath 6 are set gradually outside sinle silk connecting portion 2, and wherein conductor shield 3, insulating layer 4, insulation shield 5 vulcanize respectively with the reservation section of cable conductor 1 and fuse, and 6 both ends of sheath are connected with cable conductor 1 through mounting 7 respectively to this security and the reliability of guaranteeing the cable junction, and make the joint design reach mechanical properties and the electrical property that is close to with the cable body mutually.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (5)

1. The utility model provides a flexible joint of polyvinyl chloride cable, includes two cable conductor (1) with the specification, the cable core of cable conductor (1) passes through welding spare fixed connection, and the junction constitutes sinle silk connecting portion (2), its characterized in that, sinle silk connecting portion (2) have set gradually conductor shield (3), insulating layer (4), insulation shield (5) and sheath (6) outward, sheath (6) both ends are connected with cable conductor (1) through mounting (7) respectively.

2. The flexible joint of polyvinyl chloride cable according to claim 1, wherein said sheath (6) is a hollow lead pipe sheath, and said hollow lead pipe sheath is provided with a silicone gel isolation layer (8).

3. The flexible joint of a polyvinyl chloride cable according to claim 1, wherein the fixing member (7) comprises a sealing ring (71) integrally arranged with the sheath (6), the sealing ring (71) is provided with two matched semicircular rings (72), one side of each semicircular ring (72) is rotatably connected through a rotating shaft, the other side of each semicircular ring (72) is bent outwards to form a folding lug (73), and a locking screw rod and a locking nut matched with the locking screw rod are arranged through the folding lug (73).

4. A flexible joint of a polyvinyl chloride cable according to claim 3, wherein said sealing ring (71) is a rubber sealing ring.

5. Flexible joint for polyvinyl chloride cables as claimed in claim 4, wherein said sealing ring (71) has a plurality of uniformly distributed cavities (74), and said cavities (74) have springs (75) disposed therein, the direction of force applied to said springs being perpendicular to the central axis of said sealing ring (71).

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