CN214428412U - Temperature-sensing external electric power insulation cover - Google Patents
Temperature-sensing external electric power insulation cover Download PDFInfo
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- CN214428412U CN214428412U CN202022004054.9U CN202022004054U CN214428412U CN 214428412 U CN214428412 U CN 214428412U CN 202022004054 U CN202022004054 U CN 202022004054U CN 214428412 U CN214428412 U CN 214428412U
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Abstract
The utility model discloses a guarantee that fortune dimension personnel can in time discover that the hidden danger of junction exists, guarantee that fortune dimension personnel can judge directly perceivedly, in time handle the further deterioration of hidden danger prevention accident, guarantee the operation of electric power safe and reliable. For reaching the technical effect, the utility model discloses a technical scheme be: the temperature-sensing external insulation cover comprises a cover body supported by silicon rubber, wherein the cover body comprises a fixing part and a cable protection part, the cable protection part comprises an insulation layer wrapped on the outer side of a cable, a temperature change sleeve is arranged on the outer side of the insulation layer below the cable protection part, and one end of the temperature change sleeve is in direct contact with the cable. The utility model discloses a position at trouble place can in time be found to the external electric power insulating boot temperature sensing of such structure temperature sensing. The complete color change temperature of the whole cover body is above 150 ℃. In hot summer, the false alarm can not occur due to the temperature of the environment. The whole cover body is white and more obvious after changing color. And the temperature change sleeve can be conveniently judged by workers during maintenance.
Description
Technical Field
The utility model relates to a power equipment field, concretely relates to external electric power insulating boot of temperature sensing.
Background
In the process of designing and installing the power line, the lead equipment works at high temperature for a long time, and the working conditions of hardware fittings with a plurality of transitional connections and connections gradually become an irrespective factor influencing the running safety and reliability of the line equipment; further, with the advance of standardization, the demand for insulation of overhead lines is increasing. In the prior art, the common silicon rubber insulating cover is adopted at the joint of the wire equipment to compensate the insulation rate, but the joint is often the position which is most prone to heat, and therefore the hidden trouble of accidents is buried instead. Worse still, it also shields the hidden trouble spots itself due to the use of the insulating cover of silicone rubber. At present, infrared temperature measurement or infrared imaging is generally adopted for judgment, and the requirements on manpower, equipment and technology are relatively high.
A utility model patent with the patent number of CN201120515281.6 in the prior art discloses an electric joint insulating cover capable of changing color along with temperature in the electric joint insulating cover capable of changing color along with temperature, belonging to the technical field of electric equipment joint protection devices. The insulating cover body is a hollow shell, the square boss and the fixing clamp are manufactured on the left side, and the rectangular wiring terminal boss with the wire hole and the rectangular boss are manufactured on the right side. When the electric joint is in failure and the temperature is increased, the electric joint insulating cover capable of changing color along with the temperature can be red or purple, the failure part is displayed in a striking way, and the failure point is indicated visually and accurately; and simple structure, it is convenient to survey, need not to press close to the electrical connector and detects, has effectively alleviateed maintainer's intensity of labour. And can be widely used for electrical joints of electrical transformers, high-power tubes, conductive busbar joints, cable joints, transmitters, heat exchangers and the like. The problem of current adoption contact type temperature appearance high altitude detection trouble, adopt infrared sensor to increase manufacturing cost is solved.
However, in practical applications, such a solution still has a major problem. For example, most of the cables in the prior art are red or blue in initial color, and the white insulating cover body is still not obvious after changing color into red or purple. And the color-changing material can be oxidized after the insulating cover body is used for a long time, so that the color change is not obvious. Most importantly, different insulating covers are different in use occasions, the requirements on rated temperature are different, and the color-changing temperature corresponding to the insulating cover cannot be adjusted in the use process of the utility model.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses a guarantee that fortune dimension personnel can in time discover that the hidden danger of junction exists, adopt the absolute temperature difference method discrimination mode that discolours, guarantee that fortune dimension personnel can judge directly perceivedly, in time handle the further deterioration of hidden danger prevention accident, guarantee electric power safe and reliable operation.
For reaching the technical effect, the utility model discloses a technical scheme be: the temperature-sensing external insulation cover comprises a cover body supported by silicon rubber, wherein the cover body comprises a fixing part and a cable protection part, the cable protection part comprises an insulation layer wrapped on the outer side of a cable, a temperature change sleeve is arranged on the outer side of the insulation layer below the cable protection part, and one end of the temperature change sleeve is in direct contact with the cable.
Preferably, the lower part of the temperature change sleeve is provided with identification scale rings at equal intervals. When the color change range is small, the identification scale ring is used for judging the accurate position of the part with the largest actual temperature change, and is particularly convenient for old staff with sufficient experience to judge faults.
Preferably, a temperature-sensitive color-changing film is arranged between the two adjacent identification scale rings. Under the help of the identification scale ring, the temperature-sensitive color-changing film can be used in a split mode, if only part of the temperature-sensitive color-changing film changes color, the temperature-sensitive color-changing film of the color-changing part can be replaced, and materials are saved.
Preferably, the front end of the temperature change sleeve is provided with a stripping cut, the stripping cut is horizontal to the direction of the cable, and the depth of the stripping cut is 2/3 the thickness of the temperature change sleeve. The temperature change sleeve can be used for a plurality of times, but still has a certain service life. The stripping cut is arranged, namely a cut is made at the front end of the temperature change sleeve by a tool, and the stripping cut is horizontal to the direction of the cable, so that the overall insulation performance of the cover body is not influenced. The incision is initially closed, but after multiple uses, the incision gradually opens under the influence of high temperatures. When the temperature change sleeve is opened to a certain degree, the whole temperature change sleeve needs to be replaced.
Preferably, a filling layer is further arranged between the insulating layer and the temperature change sleeve. The filling layer is integrally formed, and the materials of the filling layer are adjusted according to requirements to ensure that the filling layer is resistant to electric arc, corona, ultraviolet rays and ozone machine chemicals, water, mildew and weather, and the insulating layer is convenient and firm to install.
Preferably, the insulating layer is fixed by a pair of fastening bolts and a cable. The fastening bolt has one side fixing part embedded inside the insulating layer and the other side matching the insulating layer from outside.
The utility model discloses a position at trouble place can in time be found to the external electric power insulating boot temperature sensing of such structure temperature sensing. The complete color-changing temperature of the whole cover body is above 150 ℃, and the actual color-changing temperature can be adjusted through setting. In hot summer, the false alarm can not occur due to the temperature of the environment. The whole cover body is white and more obvious after changing color. And the temperature change sleeve can be conveniently judged by workers during maintenance.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, example 1: the external insulating boot of temperature sensing, the cover body that includes the silicon rubber support, the cover body includes fixed part and cable protection portion, cable protection portion is including the insulating layer 4 of parcel in the 1 outside of cable, the insulating layer 4 outside of cable protection portion below is equipped with temperature change cover 2, 2 one end of temperature change cover and 1 direct contact of cable. Although the area of direct contact between one end of the temperature change sleeve 2 and the cable 1 is small in the drawing, the area of direct contact between one end of the temperature change sleeve 2 and the cable 1 is different in different types of temperature-sensing externally-hung insulating covers.
The temperature change sleeve 2 is formed by injection molding and extrusion molding of any one of polypropylene, soft polyvinyl chloride, AS resin, ABS resin or silica gel doped with temperature-sensitive color change powder.
The front end of the temperature change sleeve 2 is provided with a stripping cut 6, the stripping cut 6 is horizontal to the direction of the cable 1, and the depth of the stripping cut is 2/3 of the thickness of the temperature change sleeve 2 at the stripping cut. And a filling layer 7 is also arranged between the insulating layer 4 and the temperature change sleeve 2. The insulating layer 4 is fixed to the cable 1 by a pair of fastening bolts 5.
Based on the embodiment, the temperature-sensitive color-changing powder is required to be added to the material in the production preparation process. The temperature-sensitive color-changing powder is prepared by an electron transfer type organic compound system. The electron transfer type organic compound is an organic color system with a special chemical structure. The molecular structure of the organic substance is changed by electron transfer at a specific temperature, thereby realizing color conversion. The color-changing substance not only has bright color, but also can realize color change from a 'colored → colorless' state, which is not possessed by heavy metal double salt complex type and liquid crystal type reversible temperature-sensitive color-changing substances.
Therefore, the basic color of the utility model can be selected from yellow, green, red, blue, etc. The temperature sensing external insulation cover gradually changes the primary color into white at 85 ℃, and finally reaches milky white at more than or equal to 155 ℃. At this time, the inspector can easily perceive the white temperature sensing externally hung insulating cover in the cable 1 with dark color and examine and repair the same. The temperature-sensitive color-changing powder has the service life, so whether the temperature-sensitive externally-hung insulating cover can be used continuously or not needs to be judged according to the condition of the stripping notch 6 at the front end of the temperature-changing sleeve 2.
The structure is tested on a 30# pole section switch of a Xingxi K110 line in a Cixi Zohan power supply station area, as the line is suburb, the enterprise is more, the actually measured current is about 367, the C phase temperature sensing externally-hung insulating cover of the switch is found to be white in the inspection process, the hot-line work is immediately applied for overhauling, and the C phase of the section switch is found to be burnt; fortunately, the enterprise can be found in time, otherwise, all the enterprises around the enterprise are powered off. After the overhaul is finished, the peeling cut 6 at the front end of the temperature change sleeve 2 of the temperature sensing externally-hung insulating cover is completely opened by inspection, which indicates that the temperature sensing externally-hung insulating cover needs to be replaced after the service life is up.
Example 2: the external insulating boot of temperature sensing, the cover body that includes the silicon rubber support, the cover body includes fixed part and cable protection portion, cable protection portion is including the insulating layer 4 of parcel in the 1 outside of cable, the insulating layer 4 outside of cable protection portion below is equipped with temperature change cover 2, 2 one end of temperature change cover and 1 direct contact of cable. The outer side of the temperature-sensitive color-changing sleeve 2 is covered with a temperature-sensitive color-changing film which is prepared and formed by any one of polypropylene, soft polyvinyl chloride, AS resin, ABS resin or silica gel doped with temperature-sensitive color-changing powder. And identification scale rings 3 are arranged below the temperature change sleeve 2 at equal intervals. A temperature-sensitive color-changing film is arranged between the two adjacent identification scale rings 3.
In actual use, the temperature-sensitive color-changing sleeve 2 where the temperature-sensitive color-changing film is located is in direct contact with the cable 1.
And a filling layer 7 is also arranged between the insulating layer 4 and the temperature change sleeve 2 and is used for meeting the additional requirement of the temperature sensing externally hung insulating cover. The insulating layer 4 is fixed to the cable 1 by a pair of fastening bolts 5.
The implementation mode is used for testing on a column-mounted public transformer No. 23 in a Jinshan district in Cixi city, the area is an old district, more residents and more users exist, the capacity of an original station area is 360KVA, the color of the C-phase temperature-sensing externally-hung insulating cover of the high-voltage pile of the transformer is milky during inspection, inspection is carried out gradually, the burning red head of the C-phase pile caused by overlarge load is found, and emergency repair is arranged immediately; avoiding a larger accident. And after the maintenance is finished, the thermochromic film is replaced.
Claims (6)
1. The temperature sensing externally-hung electric power insulating cover comprises a cover body supported by silicon rubber, and is characterized in that: the cover body includes fixed part and cable protection portion, cable protection portion is including the insulating layer of parcel in the cable outside, the insulating layer outside of cable protection portion below is equipped with the temperature change cover, temperature change cover one end and cable direct contact.
2. The temperature-sensing externally-hung electrical insulation cover according to claim 1, characterized in that: and identification scale rings are arranged below the temperature change sleeve at equal intervals.
3. The temperature-sensing externally-hung electrical insulation cover according to claim 2, characterized in that: a temperature-sensitive color-changing film is arranged between the two adjacent identification scale rings.
4. The temperature-sensing externally-hung electrical insulation cover according to claim 1, characterized in that: the front end of the temperature change sleeve is provided with a stripping cut, the stripping cut is horizontal to the direction of the cable, and the depth of the stripping cut is 2/3 the thickness of the temperature change sleeve.
5. The temperature-sensing externally-hung electrical insulation cover according to claim 1, characterized in that: and a filling layer is also arranged between the insulating layer and the temperature change sleeve.
6. The temperature-sensing externally-hung electrical insulation cover according to claim 1 or 5, characterized in that: the insulating layer is fixed by a pair of fastening bolts and cables.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020200386667 | 2020-01-09 | ||
| CN202020038666 | 2020-01-09 |
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| Publication Number | Publication Date |
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| CN214428412U true CN214428412U (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022004054.9U Active CN214428412U (en) | 2020-01-09 | 2020-09-14 | Temperature-sensing external electric power insulation cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122755A (en) * | 2021-11-24 | 2022-03-01 | 广东电网有限责任公司东莞供电局 | Can follow temperature and discolour joint insulating boot |
-
2020
- 2020-09-14 CN CN202022004054.9U patent/CN214428412U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122755A (en) * | 2021-11-24 | 2022-03-01 | 广东电网有限责任公司东莞供电局 | Can follow temperature and discolour joint insulating boot |
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