CN211505686U - Novel discharge counter - Google Patents
Novel discharge counter Download PDFInfo
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- CN211505686U CN211505686U CN201922172298.5U CN201922172298U CN211505686U CN 211505686 U CN211505686 U CN 211505686U CN 201922172298 U CN201922172298 U CN 201922172298U CN 211505686 U CN211505686 U CN 211505686U
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- shell
- discharge counter
- novel discharge
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Abstract
The utility model discloses a novel counter that discharges aims at providing a durable novel counter that discharges. The ceramic insulator comprises a shell, a glass panel fixedly arranged on the surface of the shell through a glass cover, a conducting rod fixedly arranged on the outer wall of the shell and sleeved with a ceramic insulator, and two mounting ends fixedly arranged on the outer wall of the shell; the shell is provided with a grounding connecting part with a connecting hole; the ground connection portion is located between the two mounting ends. The utility model is suitable for an outdoor various environment use.
Description
Technical Field
The utility model belongs to the technical field of the monitoring devices that zinc oxide arrester was used and specifically relates to a novel counter that discharges is related to.
Background
According to the daily operation and maintenance experience and the research on the existing discharge counter on the market, the discharge counter currently used in the transformer substation has the following defects:
the sealing performance is not good, the discharge counter body is exposed in the external environment for a long time, and the discharge counter shell is corroded by wind, rain and other chemical substances, so that the discharge counter shell is corroded, peeled, foamed and the like, and further the discharge counter is corroded, so that the internal components of the discharge counter are corroded, the counter cannot normally act, the lightning stroke frequency of the lightning arrester cannot be correctly reflected, and the state evaluation of operation and maintenance personnel on the lightning arrester is influenced. The reason is that the sealing element of the discharge counter is aged and damaged under the corrosion of the natural environment after being exposed to the external environment for a long time, and the design problem causes more positions where water can possibly seep in the common discharge counter, thereby further influencing the overall sealing effect of the discharge counter.
At present, the common discharge counter is made of stainless steel, aluminum alloy and the like, the adopted anticorrosion technology is only a common paint brushing process, and long-time wind blowing and rain spraying can cause the peeling and foaming of the paint surface and the oxidation of the shell.
Secondly, according to the standard requirement, in order to avoid direct grounding of lightning current without passing through a discharge counter, the ground resistance of a lightning arrester in a substation is required to be more than 5M omega, and the ground resistance of the discharge counter is required to be less than 3-4M omega. However, some transformer substations install the lightning arrester used indoors outdoors due to material procurement and other reasons, the lightning arrester base material used indoors is exposed in the external environment for a long time, the grounding resistance is reduced due to the reasons of moisture and the like, the leakage current is not directly grounded through the discharge counter, so that the discharge counter loses the function of monitoring the leakage current of the lightning arrester, and operation and maintenance personnel cannot accurately judge the state of the lightning arrester according to the size of the leakage current.
Due to the reasons, after the common discharge counter runs for a long time, internal components are corroded and jammed due to water seepage, so that the function of accurately measuring and recording the performance parameters of the lightning arrester is lost. And the machine account is managed according to operation and maintenance experience and equipment states, the common discharge counter cannot continue to operate due to water seepage, fuzzy observation windows and the like, and must be replaced, the average operation time of the common discharge counter is displayed to be 3 years according to a statistical result, the short operation life causes the workload of operation and maintenance personnel and maintainers to be increased, and the operation and maintenance cost of the transformer substation is further increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects existing in the prior art and providing a novel discharge counter with long service life.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a novel discharge counter comprises a shell, a glass panel fixedly arranged on the surface of the shell through a glass cover, a conducting rod fixedly arranged on the outer wall of the shell and sleeved with a porcelain insulator, and two mounting ends fixedly arranged on the outer wall of the shell; the shell is provided with a grounding connecting part with a connecting hole; the ground connection portion is located between the two mounting ends.
Preferably, the connection part of the grounding connection part and the shell is sealed by an aviation-grade high-quality silicon rubber sealing ring.
Preferably, the glass panel and the shell are sealed by a silicon rubber foaming sealing ring.
Preferably, the glass panel is made of antifogging glass.
Preferably, the glass cover and the shell are connected by adopting a binding.
Preferably, the shell is a cast aluminum shell.
Preferably, the housing is rated for salt fog resistance class B.
Compared with the prior art, the utility model has the advantages of as follows:
the discharge counter has high waterproof grade and reliability, and can accurately monitor the leakage current of the lightning arrester, so that the operation and maintenance level of a power grid is improved, and the reliability of power supply is ensured.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention. In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, reference will be made to the accompanying drawings by means of directional terms, but the terms "front", "rear", "left", "right", "up", "down", etc. should be construed as convenient terms and not as limitative terms.
The novel discharge counter shown in fig. 1-2 comprises a casing 1, a glass panel 3 fixedly mounted on the surface of the casing 1 through a glass cover 2, a conducting rod 5 fixedly arranged on the outer wall of the casing 1 and sleeved with a porcelain bottle 4, and two mounting ends 6 fixedly arranged on the outer wall of the casing 1; the shell 1 is provided with a grounding connecting part 8 with a connecting hole 7; the ground connection 8 is located between the two mounting ends 6.
In this embodiment, the ground connection portion 8 is sealed with the casing 1 junction adoption aviation level high-quality silicon rubber sealing washer, ensures sealed reliability to the condition of avoiding appearing infiltration, gas leakage. The glass panel 3 and the shell 1 are sealed by the silicon rubber foaming sealing ring, so that the sealing reliability is ensured, and the conditions of water seepage and air leakage are avoided. The glass panel 3 preferably adopts antifogging glass, so that the use reliability is improved. The glass cover 2 is connected with the shell 1 by adopting the edge rolling, the shell and the glass cover can not be disassembled, and no screw is arranged on the whole body, so that the appearance structure and the assembly are more reasonable and stable, the cracking or the deformation can not be caused after the long-term use, and the original high sealing performance can be maintained between minus 50 ℃ and 120 ℃. The casing 1 adopts cast aluminum shell, the salt spray resistant grade of casing 1 is B level, and the surface is polished, can work under harsher environment, but general outdoor use more than 10 years.
When in use, the thickness is 16mm2The red and green wires are directly connected with the connecting hole 7 of the grounding connecting part 8, so that the grounding resistance of the discharge counter is ensured to be less than 10 omega.
The current measuring accuracy of the utility model is less than 2%, and the requirement that the regulation is less than 5% is met; according to the sealing test result, the waterproof grade can reach IP67 grade without water seepage and air leakage of the discharge counter after the test. The resistance between the conducting rod 5 of the discharge counter and the grounding connection part is measured by using a measuring device such as a multimeter and the like to be less than 10 omega, so that the standard requirement is met.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It should be understood by those skilled in the art that any modification, equivalent replacement, or improvement made to the technical solutions or parts of technical features described in the above embodiments can be included in the scope of the present invention within the spirit and principle of the present invention.
Claims (7)
1. A novel discharge counter comprises a shell, a glass panel fixedly arranged on the surface of the shell through a glass cover, a conducting rod fixedly arranged on the outer wall of the shell and sleeved with a porcelain insulator, and two mounting ends fixedly arranged on the outer wall of the shell; the method is characterized in that: the shell is provided with a grounding connecting part with a connecting hole; the ground connection portion is located between the two mounting ends.
2. The novel discharge counter of claim 1, wherein: the joint of the grounding connecting part and the shell is sealed by an aviation-grade high-quality silicon rubber sealing ring.
3. The novel discharge counter according to claim 1 or 2, characterized in that: the glass panel and the shell are sealed by a silicon rubber foaming sealing ring.
4. The novel discharge counter according to claim 1 or 2, characterized in that: the glass panel is made of antifogging glass.
5. The novel discharge counter according to claim 1 or 2, characterized in that: the glass cover is connected with the shell through the edge rolling.
6. The novel discharge counter according to claim 1 or 2, characterized in that: the shell is a cast aluminum shell.
7. The novel discharge counter according to claim 1 or 2, characterized in that: the salt fog resistant grade of the shell is grade B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922172298.5U CN211505686U (en) | 2019-12-06 | 2019-12-06 | Novel discharge counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922172298.5U CN211505686U (en) | 2019-12-06 | 2019-12-06 | Novel discharge counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211505686U true CN211505686U (en) | 2020-09-15 |
Family
ID=72413929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922172298.5U Active CN211505686U (en) | 2019-12-06 | 2019-12-06 | Novel discharge counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211505686U (en) |
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2019
- 2019-12-06 CN CN201922172298.5U patent/CN211505686U/en active Active
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