CN113358000A - Air gap measuring method of gap arrester - Google Patents
Air gap measuring method of gap arrester Download PDFInfo
- Publication number
- CN113358000A CN113358000A CN202110674470.6A CN202110674470A CN113358000A CN 113358000 A CN113358000 A CN 113358000A CN 202110674470 A CN202110674470 A CN 202110674470A CN 113358000 A CN113358000 A CN 113358000A
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- Prior art keywords
- measuring
- main body
- gap
- lightning arrester
- end point
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- 238000000691 measurement method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 230000037250 Clearance Effects 0.000 description 5
- 230000035512 clearance Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 206010042255 Struck by lightning Diseases 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical means
- G01B5/14—Measuring arrangements characterised by the use of mechanical means for measuring distance or clearance between spaced objects or spaced apertures
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- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/02—Details
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
Abstract
The application discloses air gap measurement method of gap arrester is applied to a gap arrester, and this gap arrester includes: the lightning arrester comprises a lightning arrester main body, a connecting rod, a measuring rod and a measuring end; scales are arranged on the lightning arrester main body; the position where the wire is closest to the lightning arrester main body is a wire gap point; the measuring rod comprises a fixed first end point and a movable second end point; the measuring method comprises the following steps: under the condition that the first end point, the measuring end and the second end of the lightning arrester main body are kept in the same straight line, the second end point is adjusted to enable the second end point, the measuring end and the wire gap point to be in the same straight line; keeping the distance between the measuring rod and the measuring end unchanged, keeping the distance between the first end point and the second end point unchanged, adjusting the second end point to enable the second end point, the measuring end and the second end of the lightning arrester main body to be in the same straight line, adjusting the measuring rod to be parallel to the lightning arrester main body, and obtaining the scale points on the lightning arrester main body, which are in the same straight line with the first end point and the testing end.
Description
Technical Field
The application relates to the technical field of lightning arrester installation, in particular to an air gap measuring method of a gap lightning arrester.
Background
When the power transmission line is struck by lightning, the lightning can cause voltage impact on the power transmission line, and the power transmission line can be caused to have short circuit fault in severe cases, so that the power supply of a power system is interrupted. Therefore, how to protect the transmission line from lightning is a concern of technicians.
The lightning arrester is an effective lightning protection mode. The existing lightning arresters are mainly classified into a gap lightning arrester and a gapless lightning arrester, wherein when the gap lightning arrester is installed on a tower of a power transmission line, an air gap with a certain distance is needed between a discharge end of the lightning arrester and an overhead conductor. The air gap is in an insulating state when in normal operation, can bear power frequency voltage and is not broken down, and when meeting lightning overvoltage, the air gap is broken down to discharge, namely, the voltage-resistant level of the gap lightning arrester is matched and depends on the clearance distance length of the air gap. Due to the fact that the sag of each section of the lead is different, the lightning arrester can be installed only after the gap distance is measured when the lightning arrester is installed on different leads; the existing measurement mode is that a ruler is hung at the discharge end of the lightning arrester for direct measurement, or theodolite is used on the ground for measurement, the former has the risk that the measurement process touches a wire for electric shock, and the latter is relatively complicated to operate.
Disclosure of Invention
In view of this, an object of the present application is to provide an air gap measuring method for a gap arrester, which is used to solve the problem that the gap distance method of the existing gap arrester cannot be considered to avoid the risk of electric shock and make the measuring process simple.
In order to achieve the above technical object, the present application provides an air gap measuring method of a gap arrester, applied to a gap arrester, the gap arrester including: the lightning arrester comprises a lightning arrester main body, a connecting rod, a measuring rod and a measuring end;
the first end of the connecting rod is connected to the electric pole provided with the wire, and the second end of the connecting rod is detachably connected with the first end of the lightning arrester main body;
the second end of the lightning arrester main body is arranged at intervals with the lead;
the position where the wire is closest to the lightning arrester main body is a wire gap point;
the lightning arrester main body is provided with scales from a second end;
the measuring rod comprises a fixed first end point and a movable second end point;
the measuring method comprises the following steps:
adjusting the measuring rod to enable the first end point, the measuring end and the second end of the lightning arrester main body to be in the same straight line;
under the condition that the first end point, the measuring end and the second end of the arrester main body are kept in the same straight line and the mutual spacing distance is unchanged, adjusting the second end point to enable the second end point, the measuring end and the wire gap point to be in the same straight line, wherein the distance between the first end point and the second end point is the gap specific distance;
under the conditions that the distance between the measuring rod and the measuring end and the distance between the second end of the lightning arrester main body and the measuring end are kept unchanged, and the distance between the first end point and the second end point is kept to be the gap specific distance, adjusting the second end point to enable the second end point, the measuring end and the second end of the lightning arrester main body to be in the same straight line, and adjusting the measuring rod to be parallel to the lightning arrester main body;
and acquiring scale points on the lightning arrester main body, which are positioned on the same straight line with the first end point and the test end.
Further, the scales on the lightning arrester main body are arranged at equal intervals.
Further, the arrester main body is connected with the first end of the connecting rod and the arrester main body through bolts.
Further, the first end of the connecting rod is rotatably connected to the electric pole.
Further, the first end of the connecting rod is slidably connected to the pole.
It can be seen from the above technical scheme that the application provides an air gap measurement method of gap arrester, is applied to a gap arrester, and this gap arrester includes: the lightning arrester comprises a lightning arrester main body, a connecting rod, a measuring rod and a measuring end; the first end of the connecting rod is connected to the electric pole provided with the wire, and the second end of the connecting rod is detachably connected with the first end of the lightning arrester main body; the second end of the lightning arrester main body is arranged at intervals with the lead; the position where the wire is closest to the lightning arrester main body is a wire gap point; the lightning arrester main body is provided with scales from a second end; the measuring rod comprises a fixed first end point and a movable second end point; the measuring method comprises the following steps: under the condition that the first end point, the measuring end and the second end of the lightning arrester main body are kept in the same straight line, adjusting the second end point to enable the second end point, the measuring end and the wire gap point to be in the same straight line, wherein the distance between the first end point and the second end point is the gap specific distance; under the conditions that the distance between the measuring rod and the measuring end is kept unchanged and the distance between the first end point and the second end point is kept to be the gap specific distance, adjusting the second end point to enable the second end point, the measuring end and the second end of the lightning arrester main body to be in the same straight line, and adjusting the measuring rod to be parallel to the lightning arrester main body;
the gap specific distance is obtained and then is compared with the scale on the arrester main body in an equal proportion, so that a technician installing the arrester can know the air gap distance of the moment, and the technician can adjust the installation position of the arrester main body according to actual conditions, so that the air gap distance meets the set length, and the measurement and installation work is completed; compare in the mode that hangs scale direct measurement at arrester discharge end, can effectively avoid the risk of electrocuting, compare in using theodolite measuring mode on ground, the measurement process is more simple and convenient, effectively solves the clearance distance mode of current gap arrester and can't compromise and avoid electrocuting the risk and make the simple and convenient problem of measurement process.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a main body of an arrester in an air gap measurement method of a gap arrester according to an embodiment of the present application;
fig. 2 is an operation schematic diagram for obtaining a gap specific distance in an air gap measurement method of a gap arrester according to an embodiment of the present application;
fig. 3 is an operation schematic diagram of obtaining an air gap according to a gap pitch in an air gap measurement method of a gap arrester according to an embodiment of the present application;
in the figure: 1. a lightning arrester main body; 11. a first end; 12. a second end; 2. a connecting rod; 3. an electric pole; 4. a wire; 41. a wire clearance point; 5. measuring the rod; 51. a first endpoint; 52. a second endpoint; 53. the specific gap distance; 6. and a measuring end.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. 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 scope of protection claimed herein.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application discloses an air gap measuring method of a gap arrester.
Referring to fig. 1 to 3, an air gap measuring method for a gap arrester provided in an embodiment of the present application is applied to a gap arrester, and the gap arrester includes: the lightning arrester comprises a lightning arrester main body 1, a connecting rod 2, a measuring rod 5 and a measuring end 6; the first end of the connecting rod 2 is connected to the electric pole 3 provided with the conducting wire 4, and the second end is detachably connected with the first end 11 of the lightning arrester main body 1; the electric pole 3 may be referred to as a mounting pole for mounting a tower of an overhead transmission line, among others.
The second end 12 of the arrester body 1 is arranged at an interval with the lead 4; the closest position of the wire 4 to the arrester body 1 is a wire gap point 41. Scales are arranged on the lightning arrester main body 1 from the second end; the measuring stick 5 comprises a fixed first end point 51 and a movable second end point 52, wherein the first end point 51 may be an end edge of the measuring stick 5.
The measuring method comprises the following steps:
s1, adjusting the measuring rod 5 so that the first end point 51 and the measuring end 6 are in the same straight line with the second end 12 of the lightning arrester main body 1;
s2, under the condition that the first end point 51, the measuring end 6 and the second end 12 of the lightning arrester main body 1 are in the same straight line and the distance therebetween is not changed, adjusting the second end point 52 to make the second end point 52, the measuring end 6 and the wire gap point 41 in the same straight line, wherein the distance between the first end point 51 and the second end point 52 is the gap ratio 53.
Specifically, referring to fig. 2, the measuring end 6 may be a measuring device, and the measuring rod 5 is rotatably disposed on the measuring device, and the rotation center is the measuring end 6. After the measuring end 6 is directed towards the arrester body 1, the measuring rod 5 is adjusted such that the first end point 51, the measuring end 6 and the second end 12 of the arrester body 1 are in the same straight line and the measuring rod 5 is kept stationary.
Furthermore, the second end point 12 is adjusted to make the second end point 52, the measuring end 6 and the wire gap point 41 in the same straight line, so that the gap distance 53 can be obtained, and the gap distance 53 is compared with the scale on the lightning arrester main body 1.
S3, under the condition that the distance between the measuring rod 5 and the measuring end 6 and the distance between the second end of the lightning arrester main body 1 and the measuring end 6 are both kept unchanged, and the distance between the first end point 51 and the second end point 52 is kept as the specific gap distance 53, adjusting the second end point 52 to enable the second end point 52, the measuring end 6 and the second end 12 of the lightning arrester main body 1 to be in the same straight line, and adjusting the measuring rod 5 to be parallel to the lightning arrester main body 1;
and S4, acquiring scale points on the lightning arrester main body 1, which are in the same straight line with the first end point and the testing end.
Specifically, referring to fig. 3, after obtaining the gap distance, the position of the measuring end 6 may be kept unchanged, and the measuring rod 5 is rotated around the measuring end 6, so that the measuring rod 5 is parallel to the lightning arrester main body 1 and the second end point 52 is aligned with the second end 12 of the lightning arrester main body 1. At this time, the second end point 52, the measuring end 6 and the second end 12 of the arrester main body 1 are in the same straight line, and the straight line connecting the first end point 51 and the measuring end 6 intersects with the arrester main body 1, and then step S4 can obtain which scale point the intersection point is specifically located.
Further, the measuring end 6 may be a port including a plurality of light emitting lines, and the light emitting lines pass through the measuring rod 5 and then irradiate on the lightning arrester main body 1, so that the lightning arrester main body is convenient for a technician to read.
In this embodiment, the scales on the arrester main body 1 may be arranged at equal intervals, that is, a plurality of equidistant scale lines may be arranged on the arrester main body 1. The second end of the connecting rod 2 is connected with the lightning arrester main body 1 through a bolt.
Further, after the technician obtains the clearance gap value according to the measurement of the clearance gap distance 53, the adjustment mode of the air gap may be: the first end of the connecting rod 2 is rotatably connected with the electric pole 3 and can be locked and fixed through a bolt and other devices, when the air gap needs to be adjusted, the bolt is unscrewed, and the connecting rod 2 is rotated so as to change the air gap between the lightning arrester main body 1 and the lead 4; it can also be: but the first end sliding connection pole 3 of connecting rod 2 to can die fixedly through device locks such as bolts, when the air gap needs to be adjusted, unscrew the bolt, make connecting rod 2 slide along pole 3, and then change the air gap between arrester main part 1 and the wire 4.
Through the air gap measuring method of the gap arrester provided by the application, after a technician obtains the air gap value at the moment according to the scale points, the air gap value can be compared with a set value meeting the requirement of the safety distance, and if the air gap value is inconsistent, the position of the arrester main body 1 can be finely adjusted. Through this kind of mode, can measure the air gap value between arrester main part 1 and the wire 4 to technical staff need not have direct basis with wire 4, has reduced the risk of electrocuteeing, and the security is higher.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (5)
1. An air gap measuring method of a gap arrester is characterized by being applied to a gap arrester, and the gap arrester comprises the following components: the lightning arrester comprises a lightning arrester main body, a connecting rod, a measuring rod and a measuring end;
the first end of the connecting rod is connected to the electric pole provided with the wire, and the second end of the connecting rod is detachably connected with the first end of the lightning arrester main body;
the second end of the lightning arrester main body is arranged at intervals with the lead;
the position where the wire is closest to the lightning arrester main body is a wire gap point;
the lightning arrester main body is provided with scales from a second end;
the measuring rod comprises a fixed first end point and a movable second end point;
the measuring method comprises the following steps:
adjusting the measuring rod to enable the first end point, the measuring end and the second end of the lightning arrester main body to be in the same straight line;
under the condition that the first end point, the measuring end and the second end of the arrester main body are kept in the same straight line and the mutual spacing distance is unchanged, adjusting the second end point to enable the second end point, the measuring end and the wire gap point to be in the same straight line, wherein the distance between the first end point and the second end point is the gap specific distance;
under the conditions that the distance between the measuring rod and the measuring end and the distance between the second end of the lightning arrester main body and the measuring end are kept unchanged, and the distance between the first end point and the second end point is kept to be the gap specific distance, adjusting the second end point to enable the second end point, the measuring end and the second end of the lightning arrester main body to be in the same straight line, and adjusting the measuring rod to be parallel to the lightning arrester main body;
and acquiring scale points on the lightning arrester main body, which are positioned on the same straight line with the first end point and the test end.
2. The air gap measuring method of a gap arrester as claimed in claim 1, wherein scales on the arrester main body are provided at equal intervals.
3. The air gap measuring method of a gap arrestor as claimed in claim 1, wherein the first end of the arrestor main body is connected to the connection rod by a bolt.
4. The air gap measuring method of a gap arrestor as set forth in claim 1, wherein the first end of the connection rod is rotatably connected to the pole.
5. The air gap measuring method of a gap arrestor as set forth in claim 1, wherein the first end of the connection rod is slidably connected to the pole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110674470.6A CN113358000A (en) | 2021-06-17 | 2021-06-17 | Air gap measuring method of gap arrester |
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| CN202110674470.6A CN113358000A (en) | 2021-06-17 | 2021-06-17 | Air gap measuring method of gap arrester |
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