CN212847841U

CN212847841U - Self-radiating electrical-grade aluminum alloy conductor cable

Info

Publication number: CN212847841U
Application number: CN202021997836.0U
Authority: CN
Inventors: 林朝前
Original assignee: Sichuan Wan Yang Cable Co ltd
Current assignee: Sichuan Wan Yang Cable Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-03-30
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a from heat dissipation formula electrician level aluminum alloy conductor cable, including the aluminum alloy conductor more than two, above-mentioned aluminum alloy conductor outside is equipped with the sheath, and above-mentioned sheath parcel aluminum alloy conductor, its characterized in that: above-mentioned aluminum alloy conductor outer wall is equipped with the heat conduction cotton, and above-mentioned sheath inner wall is equipped with the armor, and the inside cutting that is equipped with of above-mentioned armor is equipped with the socket that corresponds with the cutting on the above-mentioned heat conduction cotton, and above-mentioned cutting stretches into the socket, and the cotton outer wall of above-mentioned armor inner wall contact heat conduction for carry out the heat transfer by armor and heat conduction cotton, when expecting to improve current cable and carrying out the load test, because current voltage is unstable, probably lead to the too high problem of cable local temperature.

Description

Self-radiating electrical-grade aluminum alloy conductor cable

Technical Field

The utility model relates to an electrician's level cable, concretely relates to from heat dissipation formula electrician's level aluminum alloy conductor cable.

Background

With the development of the times, the application of power is gradually wide, a cable is an important component for ensuring the operation of a power grid, and if the cable breaks down, the stability of the power grid is easily affected greatly, even safety accidents occur, so that the stable operation of the cable is the core guarantee of power engineering.

The phenomenon of generating heat can appear in current power cable when passing through certain load current, and along with load current's increase, cable surface temperature just is higher, piles up to certain extent and handles untimely when cable surface's temperature, probably leads to the cable performance impaired, and then induces short circuit and electric leakage risk. Particularly, when a load test or experiment is carried out, the load borne by the cable gradually tends to the maximum design standard; as is well known, in the process of preliminary testing or experiments of a distribution network, the conditions of unstable local current and voltage often occur, and a worker is required to gradually debug equipment according to relevant conditions; after the distribution network is debugged, the voltage and the current of a distribution network unit are relatively stable, and the stability of the distribution network is obviously improved.

During actual test, because the current and voltage of each energy consumption unit in a distribution network are unstable, the local temperature of the cable is possibly overhigh, so that a short circuit phenomenon occurs, the whole detection is stopped, the structure of the cable is optimized, and the phenomenon that the local temperature is overhigh due to unstable current and voltage during test is improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a from heat dissipation formula electrician's level aluminum alloy conductor cable to expect to improve current cable when carrying out the load test, because current-voltage is unstable, probably lead to the too high problem of cable local temperature.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a from heat dissipation formula electrician level aluminum alloy conductor cable, includes the aluminum alloy conductor more than two, and above-mentioned aluminum alloy conductor outside is equipped with the sheath, and above-mentioned sheath parcel aluminum alloy conductor, its characterized in that: above-mentioned aluminum alloy conductor outer wall is equipped with the heat conduction cotton, and above-mentioned sheath inner wall is equipped with the armor, and the inside cutting that is equipped with of above-mentioned armor is equipped with the socket that corresponds with the cutting on the above-mentioned heat conduction cotton, and above-mentioned cutting stretches into in the socket, the cotton outer wall of above-mentioned armor inner wall contact heat conduction for carry out the heat transfer by armor and heat conduction cotton.

Preferably, the side wall of the sheath is provided with a heat exchange hole, one side of the sheath is provided with a heat exchange tube, the heat exchange tube extends into the heat exchange hole and contacts with the outer wall of the armor, and the heat exchange tube is filled with a cooling medium for heat transfer between the cooling medium and the armor.

A further technical scheme is that the heat exchange tube comprises a main pipeline and a branch pipeline, the head end of the branch pipeline is communicated with the main pipeline, the tail end of the branch pipeline extends into the heat exchange hole, and the tail end of the branch pipeline is provided with a pipe plug which is in contact with the armored outer wall.

According to a further technical scheme, the tail end of the pipe plug extends out of the branch pipeline, and the tail end of the pipe plug is an arc-shaped surface attached to the outer wall of the armor.

The further technical scheme is that a fluorescent strip is attached to the outer wall of the sheath and is positioned on one side of the heat exchange hole.

Preferably, the aluminum alloy conductor includes a core layer, the outer wall of the core layer is provided with a shielding layer, the outer wall of the shielding layer is provided with an insulating layer, the inner wall of the shielding layer is attached to the core layer, and the outer wall of the shielding layer is attached to the insulating layer.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

the utility model discloses a sheath improves cable protective capacities, carries out the heat transfer through heat conduction cotton and aluminum alloy conductor, improves the ability that the cable bore mechanical pressure on the one hand through the armor, and on the other hand absorbs the heat in the heat conduction cotton as heat transfer medium, makes the heat that aluminum alloy conductor produced can be absorbed by the armor to the homodisperse is to whole cable, avoids local high temperature to cause the short circuit risk. The inserting strip of the armor is inserted into the socket of the heat conducting cotton, so that the heat conducting cotton is ensured to be in contact with the armor from the outside to the inside for heat exchange.

The utility model discloses still establish the replacement hot hole on the sheath, its heat exchange tube carries out the heat transfer through heat transfer hole and armor to in the load experimentation, cool down to the high region of local temperature, utilize the heat exchange tube to make the heat energy area of armor leave the cable. The risk that the local temperature of the cable is too high is avoided, and the load experiment is guaranteed to be stably carried out.

The utility model discloses a heat exchange tube passes through trunk line circulation coolant, stretches into the heat transfer hole respectively by the small transfer line to a plurality of regions to the cable are cooled down. The pipe plug is used for avoiding the contact of the cooling medium and the cable and is used as a carrier for heat exchange between the armor and the cooling medium, so that the leakage risk is reduced. Through the fluorescence area under the night environment, the staff of being convenient for under the insufficient condition of illumination, can discern the cable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the distribution of heat exchange holes of the present invention.

Fig. 3 is the installation schematic diagram of the heat exchange tube of the present invention.

Fig. 4 is a schematic view of the aluminum alloy conductor structure of the present invention.

Description of reference numerals:

the heat exchange tube comprises a 1-aluminum alloy conductor, a 2-sheath, 3-heat conduction cotton, 4-armor, 5-heat exchange holes, 6-heat exchange tubes, 7-fluorescent strips, 101-core layers, 102-shielding layers, 103-insulating layers, 301-jacks, 401-inserts, 601-main pipelines, 602-branch pipelines and 603-pipe plugs.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, an embodiment of the present invention is a self-radiating electrical grade aluminum alloy conductor cable, which includes more than two aluminum alloy conductors 1, wherein the aluminum alloy conductors 1 are cables made of existing aluminum alloy core materials. The aluminum alloy conductor 1 is used in a specified current range according to the specification of a cable in actual operation, the maximum current value of the allowable load of the aluminum alloy conductor 1 is that the conductor cannot be short-circuited at the highest working temperature, and specifically, the temperature value of the aluminum alloy conductor 1 cannot exceed the long-term tolerance temperature of an insulating material used. Thereby ensuring that the service life of the cable is controllable. If the aluminum alloy conductor 1 runs under overload for a long time, the temperature of the conductor in the aluminum alloy conductor 1 is too high, the maximum current temperature exceeds the limit value, the aging of the cable is accelerated, the heat conducting property of the cable is reduced, and even the cable insulation is thermally broken down due to local overheating, so that interphase short circuit or fire accidents are caused.

The outer side of the aluminum alloy conductor 1 is provided with a sheath 2, wherein the sheath 2 is made of the existing crosslinked polyethylene, the minimum bending radius allowed by the sheath is small, and the aluminum alloy conductor is light in weight and easy to install. The aluminum alloy conductor 1 is wrapped by the sheath 2, the thermal performance of the sheath 2 is good, the allowable working temperature is high, and the transmission capacity is large, so that the number of the aluminum alloy conductors 1 in the sheath 2 can be multiple, and the overall transmission capacity of the cable is improved.

1 outer wall of above-mentioned aluminum alloy conductor is equipped with heat conduction cotton 3, wrap up aluminum alloy conductor 1 through heat conduction cotton 3, thereby after 1 aluminium alloy conductor generates heat, the heat is absorbed by

heat conduction cotton

3, 2 inner walls of above-mentioned sheath are equipped with armor 4, wherein armor 4 is made for heat conduction metal, 4 inside cutting 401 that are equipped with of above-mentioned armor, be equipped with the socket 301 that corresponds with cutting 401 on the cotton 3 of above-mentioned heat conduction, above-mentioned cutting 401 stretches into in the

socket

301, 4 inner wall contact heat conduction cotton 3 outer walls of above-mentioned armor, be used for carrying out the heat transfer by armor 4 and heat conduction cotton 3.

Wherein, the contact of the cotton 3 outer walls of heat conduction and the 4 inner walls of armor to heat conduction cotton 3 carries out the heat transfer with armor 4, because heat conduction cotton 3 has certain thickness, and its cotton 3 inside temperatures of heat conduction is higher than the outside temperature, so heat conduction cotton 3 goes deep into the socket 301 of the cotton 3 of heat conduction through cutting 401, thereby improves heat exchange efficiency.

When a load test is carried out, the current passing through the aluminum alloy conductor 1 gradually tends to the aluminum alloy conductor 1, and due to the fact that the load connection modes are various, certain errors can exist in the current and the voltage of the aluminum alloy conductor 1 during the test, the current loaded on the aluminum alloy conductor 1 exceeds a specified current range, and the conductor temperature inside the aluminum alloy conductor 1 can be too high. The high temperature that its aluminum alloy conductor 1 produced is absorbed by heat conduction cotton 3, and heat conduction cotton 3 transmits for armor 4, because the material of armor 4 is the metal, armor 4 can be quick with heat energy dispersion to whole cable, avoid the risk that local high temperature caused.

Based on above-mentioned embodiment, refer to fig. 2 and show, the utility model discloses a further embodiment is, in order to improve heat exchange efficiency, 2 lateral walls of above-mentioned sheath are equipped with

heat exchange hole

5, 2 one sides of above-mentioned sheath are equipped with heat exchange tube 6, because under the test environment, part distribution network equipment needs the overload to carry out work, in order to guarantee the stability of equipment overload operation, need avoid the regional cable of overload short circuit phenomenon to appear, it evades the mode and generally changes the higher cable of specification, but change the operation relatively loaded down with trivial details and take time, lead to test efficiency to slow down. The heat exchange tube 6 extends into the heat exchange hole 5 and contacts the outer wall of the armor 4, a cooling medium is filled in the heat exchange tube 6, and the cooling medium in the heat exchange tube 6 can be the existing cooling liquid and is used for heat transfer between the cooling medium and the armor 4.

In stretching into heat transfer hole 5 through heat exchange tube 6, its heat exchange tube 6 and armor 4 contact to heat exchange tube 6 carries out the heat exchange with armor 4, thereby reduces the heat energy of armor 4, avoids heat energy to pile up on armor 4, improves cable operating temperature upper limit.

Further, referring to fig. 3, the heat exchanging pipe 6 includes a main pipe 601 and branch pipes 602, and specifically, the heat exchanging pipe 6 is composed of a main pipe 601 and a plurality of branch pipes 602, wherein the number of the branch pipes 602 corresponds to the number of the heat exchanging holes 5.

The head end of the branch pipe 602 is communicated with the main pipe 601, the tail end of the branch pipe 602 extends into the heat exchange hole 5, the tail end of the branch pipe 602 is provided with a pipe plug 603, and the pipe plug 603 contacts with the outer wall of the armor 4. The pipe plug 603 is made of heat conducting materials, the outer wall of the pipe plug 603 is in contact with the armor 4, and the inner wall of the pipe plug 603 is in contact with a cooling medium, so that heat exchange between the cooling medium and the armor 4 is realized.

Furthermore, in order to increase the contact area between the pipe plug 603 and the armor 4, the heat exchange efficiency is increased. The tail end of the pipe plug 603 extends out of the branch pipe 602, and the tail end of the pipe plug 603 is an arc-shaped surface attached to the outer wall of the armor 4.

Further, a fluorescent tape 7 is attached to the outer wall of the sheath 2, and the fluorescent tape 7 is positioned on the heat exchange hole 5 side. Wherein fluorescent strip 7 is current night light sticker, pastes the fluorescent strip 7 of different colors on cable sheathing 2 as required to the staff joins in marriage the distribution condition of net according to the cable, discerns as early as possible. For example, the attached fluorescent tape 7 connected to the distribution box is red, and for example, the attached fluorescent tape 7 connected to the central control system is white.

Based on the above embodiment, referring to fig. 4, another embodiment of the present invention is that, the above aluminum alloy conductor 1 includes a core layer 101, wherein the core layer 101 is a conductor twisted together by an aluminum alloy, the outer wall of the above core layer 101 is provided with a shielding layer 102, wherein the shielding layer 102 is an existing semiconductor material, the outer wall of the above shielding layer 102 is provided with an insulating layer 103, wherein the insulating layer 103 is an insulating layer made by an existing silane crosslinking, the inner wall of the above shielding layer 102 is attached to the core layer 101, and the outer wall of the above shielding layer 102 is attached to the insulating layer 103. The shielding layer 102 protects the core layer 101, effectively improves electric field distribution, and avoids partial discharge.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides a from heat dissipation formula electrician grade aluminum alloy conductor cable, includes aluminum alloy conductor (1) more than two, aluminum alloy conductor (1) outside is equipped with sheath (2), sheath (2) parcel aluminum alloy conductor (1), its characterized in that: aluminum alloy conductor (1) outer wall is equipped with heat conduction cotton (3), sheath (2) inner wall is equipped with armor (4), armor (4) inside is equipped with cutting (401), be equipped with socket (301) that correspond with cutting (401) on heat conduction cotton (3), cutting (401) stretch into in socket (301), armor (4) inner wall contact heat conduction cotton (3) outer wall for carry out the heat transfer by armor (4) and heat conduction cotton (3).

2. The self-dissipating electrical grade aluminum alloy conductor cable according to claim 1, wherein: the heat exchanger is characterized in that heat exchange holes (5) are formed in the side wall of the sheath (2), a heat exchange tube (6) is arranged on one side of the sheath (2), the heat exchange tube (6) extends into the heat exchange holes (5) and contacts with the outer wall of the armor (4), and a cooling medium is injected into the heat exchange tube (6) and is used for heat transfer between the cooling medium and the armor (4).

3. The self-dissipating electrical grade aluminum alloy conductor cable according to claim 2, wherein: the heat exchange tube (6) comprises a main pipeline (601) and a branch pipeline (602), the head end of the branch pipeline (602) is communicated with the main pipeline (601), the tail end of the branch pipeline (602) extends into the heat exchange hole (5), the tail end of the branch pipeline (602) is provided with a pipe plug (603), and the pipe plug (603) is in contact with the outer wall of the armor (4).

4. The self-dissipating electrical grade aluminum alloy conductor cable according to claim 3, wherein: the tail end of the pipe plug (603) extends out of the branch pipeline (602), and the tail end of the pipe plug (603) is an arc-shaped surface attached to the outer wall of the armor (4).

5. The self-dissipating electrical grade aluminum alloy conductor cable according to claim 2, wherein: the outer wall of the sheath (2) is pasted with a fluorescent belt (7), and the fluorescent belt (7) is located on one side of the heat exchange hole (5).

6. The self-dissipating electrical grade aluminum alloy conductor cable according to claim 1, wherein: the aluminum alloy conductor (1) comprises a core layer (101), wherein a shielding layer (102) is arranged on the outer wall of the core layer (101), an insulating layer (103) is arranged on the outer wall of the shielding layer (102), the inner wall of the shielding layer (102) is attached to the core layer (101), and the outer wall of the shielding layer (102) is attached to the insulating layer (103).