CN112242688A - Lightning arrester for high-altitude power distribution system - Google Patents
Lightning arrester for high-altitude power distribution system Download PDFInfo
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- CN112242688A CN112242688A CN202011038057.2A CN202011038057A CN112242688A CN 112242688 A CN112242688 A CN 112242688A CN 202011038057 A CN202011038057 A CN 202011038057A CN 112242688 A CN112242688 A CN 112242688A
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- 229910000831 Steel Inorganic materials 0.000 claims description 8
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
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- 238000009500 colour coating Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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- 239000011787 zinc oxide Substances 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
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Abstract
The invention relates to the technical field of lightning arresters and discloses a lightning arrester for a high-altitude power distribution system. This arrester for high altitude power distribution system, when the arrester body breaks down, utilize power frequency short-circuit current to make the soluble support column melt, move down from the fixed axle, the indicator that is located fixed epaxial will shorten, thereby expose at the outside length variation of arrester body through observing indicator, can know whether the arrester body breaks down, do not need test one by one, can improve work efficiency, the erection joint seat is fixed back, insert unable adjustment base's one end in the spout, and slide to the leftmost side, later insert the slot of spout bottom with spacing picture peg, make unable adjustment base compressed tightly the inside at the spout, the operation is very quick, and is convenient.
Description
Technical Field
The invention relates to the technical field of lightning arresters, in particular to a lightning arrester for a high-altitude power distribution system.
Background
The arrester is an electric appliance used for protecting various electric appliances in an electric power system from being damaged by lightning overvoltage, operation overvoltage and power frequency transient overvoltage impact, limiting follow current time and normally limiting follow current amplitude, is sometimes called as an overvoltage protector and an overvoltage limiter, is used for protecting the insulation of alternating current power transmission and transformation equipment from being damaged by the lightning overvoltage and the operation overvoltage, and is suitable for overvoltage protection of transformers, power transmission lines, distribution panels, switch cabinets, power metering boxes, vacuum switches, parallel compensation capacitors, rotating motors, semiconductor devices and the like. The types of arresters are mainly protection gap, valve type arresters and zinc oxide arresters. The protective gap is mainly used for limiting atmospheric overvoltage and is generally used for protecting the line incoming section of a power distribution system, a line and a substation. The valve type lightning arrester and the zinc oxide lightning arrester are used for protecting a substation and a power plant, are mainly used for limiting atmospheric overvoltage in a system of 500KV and below, and are also used for limiting internal overvoltage or performing backup protection on the internal overvoltage in an ultrahigh voltage system. For the arrester used in the high-altitude power distribution system, because the high altitude construction danger is higher, especially the electric power work of high altitude, so should not stay for a long time, but current arrester when installing, need two hands to operate simultaneously, because there is the instrument in the operating personnel hand, lead to the installation very inconvenient, the time of having prolonged the installation, work efficiency has been reduced, and also can not directly be seen from the surface if the inside damage that has taken place of arrester, need consume a large amount of check-up time, when having increased work burden, cause the waste of time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the lightning arrester for the high-altitude power distribution system, which has the advantages of ensuring that the lightning arrester can be installed more conveniently under the condition of firm installation, directly judging whether the lightning arrester is damaged from the outside and improving the working efficiency, and solves the problems that the existing lightning arrester needs two hands to operate simultaneously when being installed, the installation process is inconvenient because an operator has tools in the hands, the installation time is prolonged, the working efficiency is reduced, and if the lightning arrester is damaged, the damage can not be directly seen from the outer surface, a large amount of inspection time needs to be consumed, the working burden is increased, and the time is wasted.
The invention provides the following technical scheme: an arrester for a high-altitude power distribution system comprises an arrester body, a fixed base, an installation connecting seat and an installation supporting plate, wherein a fixed shaft penetrates through the top of the arrester body movably, the top of the fixed shaft extends to the outside of the arrester body, the bottom of the fixed shaft extends to the inner cavity of the arrester body, an insulating supporting column is fixedly installed on the inner wall of the arrester body, an indicating mark is arranged on the outer surface of the fixed shaft positioned on the outside of the arrester body, a supporting transverse plate is fixedly installed at the bottom of the fixed shaft positioned in the inner cavity of the arrester body, a spring is movably sleeved on the outer surface of the fixed shaft positioned in the inner cavity of the arrester body and positioned between the top surface of the supporting transverse plate and the top surface of the inner cavity of the arrester body, a soluble supporting column is fixedly installed at the bottom of the supporting transverse plate, and a, the outer surface of the fixed plate is fixedly connected with the inner wall of the insulating support column, the bottom of the arrester body is fixedly provided with a grounding end, the bottom of the outer surface of the arrester body is fixedly sleeved with a fixed support plate, the bottom of the outer surface of the arrester body is provided with a thread, the fixed support plate is provided with a thread through hole corresponding to the thread, the thread through hole penetrates through the top surface and the bottom surface of the fixed support plate, the arrester body is in threaded connection with the fixed support plate through the thread through hole, the fixed support plate is also provided with a plurality of first through holes, the first through holes penetrate through the top surface and the bottom surface of the fixed support plate, the top of the fixed base is fixedly welded with a plurality of first screws, each first screw is respectively matched with each first through hole on the fixed support plate, and the outer surface of each first screw is fixedly sleeved with, the top of the first screw penetrates through each first through hole in the fixed supporting plate respectively, the top of the first screw is in threaded connection with a first nut, the fixed supporting plate is fixed between the first nut and the limiting block, the length of the grounding end is smaller than the distance from the bottom of the lightning arrester body to the top of the fixed base, the fixed base is fixedly connected with the installation connecting seat, the installation connecting seat is positioned below the fixed base, a pair of second screws are fixedly installed at the bottom of the installation connecting seat, a pair of second through holes are arranged on the installation supporting plate in a penetrating mode, the diameter and the distance of the pair of second screws are matched with the diameter and the distance of the pair of second through holes, the length of the second screws is larger than that of the second through holes in the installation supporting plate, the second screws penetrate through the second through holes, and the second nuts are sleeved on the surface threads of the second screws, the second screw cap is positioned below the installation support plate, and the installation connecting seat is fixedly connected with the installation support plate through a second screw and a second through hole in the installation support plate.
Preferably, the bottom of the fixed base is provided with a first thread groove, the top of the installation connecting seat is fixedly provided with a fourth screw, the fourth screw is matched with the thread groove at the bottom of the fixed base, the fourth screw is in threaded connection with the fixed base through the thread groove, the fixed base is provided with a plurality of threaded holes which penetrate through the top surface and the bottom surface of the fixed base, the top of the mounting and connecting seat is provided with a plurality of second thread grooves, the diameter of the threaded hole on the fixed base is equal to that of the second thread grooves on the top of the mounting and connecting seat, and the positions are corresponding, the threaded hole on the fixed base and the internal thread of the second thread groove at the top of the mounting connecting seat are inserted with a third screw, the top fixed mounting of third screw has rotatory cap, unable adjustment base passes through fourth screw and third screw fixed connection with the erection joint seat.
Preferably, erection joint seat's top is equipped with the spout, the spout runs through erection joint seat's right flank, spout and unable adjustment base's longitudinal section all is the type of falling T, unable adjustment base's lower half is located the inside of spout, unable adjustment base passes through spout and erection joint seat sliding connection, the bottom of spout is equipped with the slot, the inside activity of this slot is pegged graft and is had spacing picture peg, spacing picture peg and the fixed bonding of the side that unable adjustment base is close to mutually have spacing gasket, spacing gasket is connected with the slot pressure-equalizing bottom the right flank of unable adjustment base and spout, the longitudinal section of spacing picture peg is L shape, spacing picture peg highly is greater than unable adjustment base's height.
Preferably, the indication marks are color coatings printed on the outer surface of the fixed shaft, the number of the indication marks is not less than two, the interval between every two indication marks is 0.5-0.8cm, and the width of each indication mark is 0.3-1 cm.
Preferably, the soluble support posts are made of tin.
Preferably, the stationary shaft is made of steel.
Preferably, the number of the threaded holes in the fixed base and the number of the second threaded grooves in the top of the mounting and connecting base are not less than two.
Preferably, the limiting insertion plate is made of a steel sheet, and the limiting insertion plate can also be made into a T shape.
Preferably, the limiting gasket is made of rubber, and the thickness of the limiting gasket is 0.2-0.5 cm.
Compared with the prior art, the invention has the following beneficial effects:
1. this arrester for high altitude power distribution system, setting through soluble support column, when the arrester body breaks down, utilize power frequency short-circuit current to make soluble support column melt, it moves down to push the support diaphragm under the spring action of spring, thereby move down with the fixed axle that supports diaphragm fixed connection, the indicator that is located fixed epaxial will shorten, thereby expose at the outside length variation of arrester body through observing indicator, can know whether the arrester body breaks down, need not test one by one, it is very swift, can improve work efficiency greatly.
2. The lightning arrester for the high-altitude power distribution system is characterized in that a second screw is aligned to a second through hole on the mounting support plate and inserted into the second through hole, then the mounting and connecting base can be placed on the top of the mounting support plate without manual operation, the mounting and connecting base can be temporarily positioned on the top of the mounting support plate without sliding, then the second screw cap is screwed on the second screw, and the mounting and connecting base can be fixed, then aligning the thread groove at the bottom of the fixed base with the fourth screw and rotating the fixed base to fix the fourth screw at the bottom of the fixed base, then releasing one hand, only needing one-hand operation, the other hand can be used for holding an operation tool, inserting the third screw into the thread hole on the fixed base, and fixed mounting can be accomplished to twisting it to the bottommost with instrument, and the fastness of arrester body can be guaranteed to whole installation, does not need both hands to operate simultaneously always during the installation moreover, convenience when can providing the operation.
3. This arrester for high altitude power distribution system, through with the fixed back of erection joint seat, can aim at unable adjustment base's one end spout, insert unable adjustment base's lower half in the spout to slide to the leftmost side, later insert the slot of spout bottom from the top of spout with spacing picture peg, and utilize the elastic characteristic of spacing gasket, make unable adjustment base firmly compressed tightly in the inside of spout, can accomplish the fixed to the arrester body, the operation is very quick, convenient.
4. This arrester for high altitude power distribution system, through the threaded connection of arrester body and fixed support board, can adjust the distance between the bottom of arrester body and unable adjustment base's the top, when connecting the earth connection line, can increase this distance through rotatory arrester body, conveniently carry out the wiring operation, later the contrarotation arrester body makes it move down, reduces the focus of arrester body, increases the fastness.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic sectional view of a body part of the arrester according to the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;
fig. 4 is a schematic longitudinal sectional structure view of a fixing base according to a second embodiment of the present invention.
In the figure: 1. a lightning arrester body; 2. a fixed shaft; 3. an indicator mark; 4. a first nut; 5. fixing the support plate; 6. a first screw; 7. a fixed base; 8. mounting a connecting seat; 9. mounting a support plate; 10. a ground terminal; 11. a fourth screw; 12. a third screw; 13. a second screw; 14. a second nut; 15. a chute; 16. a limiting inserting plate; 17. a limiting gasket; 18. supporting the transverse plate; 19. a fixing plate; 20 spring and spring; 21. a soluble support column; 22. insulating support post.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The first implementation mode comprises the following steps: referring to fig. 1-2, a lightning arrester for high-altitude power distribution system comprises a lightning arrester body 1, a fixed base 7, a mounting connection seat 8 and a mounting support plate 9, wherein the top of the lightning arrester body 1 is movably penetrated by a fixed shaft 2, the fixed shaft 2 is made of steel, the steel has high hardness, is not easy to deform and can conduct electricity, the service life of the fixed shaft 2 can be prolonged, the top of the fixed shaft 2 extends to the outside of the lightning arrester body 1, the bottom of the fixed shaft 2 extends to an inner cavity of the lightning arrester body 1, an insulating support column 22 is fixedly mounted on the inner wall of the lightning arrester body 1, an indication mark 3 is arranged on the outer surface of the fixed shaft 2 positioned outside the lightning arrester body 1, the indication mark 3 is a color coating printed on the outer surface of the fixed shaft 2, the number of the indication marks 3 is not less than two, the interval between every two indication marks 3 is 0.5-, the width of the indication mark 3 is 0.3-1cm, the existence of faults of the lightning arrester body 1 can be intuitively reflected through the change of the number of sections and the length of the indication mark 3 outside the lightning arrester body 1, therefore, the interval and the width of the indication mark 3 can be easily observed, a supporting transverse plate 18 is fixedly arranged at the bottom of a fixed shaft 2 in the inner cavity of the lightning arrester body 1, a spring 20 is movably sleeved on the outer surface of the fixed shaft 2 in the inner cavity of the lightning arrester body 1, the spring 20 is arranged between the top surface of the supporting transverse plate 18 and the top surface of the inner cavity of the lightning arrester body 1, a soluble supporting column 21 is fixedly arranged at the bottom of the supporting transverse plate 18, the soluble supporting column 21 is made of tin, and by utilizing the characteristic that the tin is easy to melt, when the lightning arrester body 1 has faults, the soluble supporting column 21 can be melted through power frequency short, the supporting column 21 is used for supporting the supporting transverse plate 18, through the arrangement of the soluble supporting column 21, when the lightning arrester body 1 breaks down, the soluble supporting column 21 is melted by using power frequency short-circuit current, the supporting transverse plate 18 is pushed to move downwards under the action of the elastic force of the spring 20, so that the fixing shaft 2 fixedly connected with the supporting transverse plate 18 moves downwards, the indicating mark 3 on the fixing shaft 2 is shortened, whether the lightning arrester body 1 breaks down or not can be known through observing the length change of the indicating mark 3 exposed outside the lightning arrester body 1, the testing is not required to be carried out one by one, the operation efficiency can be greatly improved, the bottom of the soluble supporting column 21 is fixedly connected with the fixing plate 19, the outer surface of the fixing plate 19 is fixedly connected with the inner wall of the insulating supporting column 22, the grounding end 10 is fixedly installed at the bottom of the lightning arrester body 1, and, the bottom of the outer surface of the lightning arrester body 1 is provided with a thread, the fixed supporting plate 5 is provided with a thread through hole corresponding to the thread, the thread through hole penetrates through the top surface and the bottom surface of the fixed supporting plate 5, the lightning arrester body 1 and the fixed supporting plate 5 are in threaded connection through the thread through hole, the distance between the bottom of the lightning arrester body 1 and the top of the fixed base 7 can be adjusted through the threaded connection of the lightning arrester body 1 and the fixed supporting plate 5, when a grounding wire is connected, the distance can be increased through rotating the lightning arrester body 1, the wiring operation is convenient, then the lightning arrester body 1 is reversely rotated to move downwards, the gravity center of the lightning arrester body 1 is reduced, the firmness is increased, the fixed supporting plate 5 is further provided with a plurality of first through holes, the first through holes penetrate through the top surface and the bottom surface of the fixed supporting plate 5, the top of the fixed base 7 is fixedly welded with, each first screw 6 is respectively matched with each first through hole on the fixed supporting plate 5, a limiting block is sleeved on the outer surface of each first screw 6, the top of each first screw 6 respectively penetrates through each first through hole on the fixed supporting plate 5, the top of each first screw 6 is in threaded connection with a first nut 4, the fixed supporting plate 5 is fixed between the first nut 4 and the limiting block, the first screws 6 penetrate through the first through holes on the fixed supporting plate 5 and are screwed with the first nuts 4, the fixing work of the lightning arrester body 1 and the fixed base 7 can be completed, the length of the grounding end 10 is smaller than the distance from the bottom of the lightning arrester body 1 to the top of the fixed base 7, a certain space needs to be reserved for connecting the grounding end 10, the wiring operation needs to be performed, the fixed base 7 is fixedly connected with the installation connecting seat 8, and the installation connecting seat 8 is positioned below the fixed base 7, the bottom of the fixed base 7 is provided with a first thread groove, the top of the installation connecting base 8 is fixedly provided with a fourth screw 11, the fourth screw 11 is matched with the thread groove at the bottom of the fixed base 7, the fourth screw 11 is in threaded connection with the fixed base 7 through the thread groove, the fixed base 7 is provided with a plurality of threaded holes, the threaded holes penetrate through the top surface and the bottom surface of the fixed base 7, the top of the installation connecting base 8 is provided with a plurality of second thread grooves, the diameter of the threaded holes on the fixed base 7 is equal to that of the second thread grooves at the top of the installation connecting base 8, the positions of the threaded holes on the fixed base 7 are corresponding to those of the second thread grooves at the top of the installation connecting base 8, the threaded holes on the fixed base 7 are inserted with the internal threads of the second thread grooves at the top of the installation connecting base 8, the number of the threaded holes on the fixed base 7 and the second thread, the top of the third screw 12 is fixedly provided with a rotating cap, the fixed base 7 is fixedly connected with the installation and connection base 8 through a fourth screw 11 and the third screw 12, the bottom of the installation and connection base 8 is fixedly provided with a pair of second screws 13, the installation support plate 9 is provided with a pair of second through holes in a penetrating way, the diameter and the distance of the pair of second screws 13 are matched with the diameter and the distance of the pair of second through holes, the length of the second screws 13 is larger than that of the second through holes on the installation support plate 9, the second screws 13 pass through the second through holes, the surface threads of the second screws 13 are sleeved with second screw caps 14, the second screw caps 14 are positioned below the installation support plate 9, the installation and connection base 8 is fixedly connected with the installation support plate 9 through the second through holes on the second screws 13 and the installation support plate 9, the second screws 13 are aligned with the second through holes on the installation support plate 9 and inserted into the second through holes, and then hands, without hand operation, erection joint seat 8 can be temporarily in the top of installation extension board 9 and can not slide, later can accomplish the fixed of erection joint seat 8 on screwing second screw 13 with second nut 14, then aim at fourth screw 11 and rotatory unable adjustment base 7 with the thread groove of unable adjustment base 7 bottom and make fourth screw 11 fix in unable adjustment base 7's bottom, later can liberate one hand, only one-hand operation is needed, the other hand can be used to hold operating means, insert the screw hole on unable adjustment base 7 with third screw 12, and fixed mounting can be accomplished to bottommost with it to the use tools, the fastness of arrester body 1 can be guaranteed to whole installation, and do not need both hands to operate simultaneously all the time during the installation, convenience when can providing the operation.
The second embodiment: referring to fig. 3-4, a lightning arrester for high altitude power distribution system, the top of the installation and connection base 8 is provided with a chute 15, the chute 15 penetrates through the right side surface of the installation and connection base 8, the longitudinal sections of the chute 15 and the fixed base 7 are both inverted T-shaped, the lower half part of the fixed base 7 is located inside the chute 15, the fixed base 7 is slidably connected with the installation and connection base 8 through the chute 15, the bottom of the chute 15 is provided with a slot, the slot is movably inserted with a limit inserting plate 16, the side surface of the limit inserting plate 16 close to the fixed base 7 is fixedly adhered with a limit gasket 17, the limit gasket 17 is uniformly and tightly connected with the right side surface of the fixed base 7 and the slot at the bottom of the chute 15, the limit gasket 17 is made of rubber, the thickness of the limit gasket 17 is 0.2-0.5cm, the limit gasket 17 made of rubber can compress the fixed base 7 by using its own softness and elasticity, the fixed base 7 is ensured not to shake, the longitudinal section of the limiting inserting plate 16 is L-shaped, the height of the limiting inserting plate 16 is larger than that of the fixed base 7, the limiting inserting plate 16 is made of a steel sheet, the limiting inserting plate 16 can also be made into T-shaped, the high hardness and non-deformation characteristics of the steel sheet are utilized, the fixation of the fixed base 7 in the chute 15 can be ensured to be more stable, the limiting inserting plate 16 can be conveniently lifted by designing the L-shaped or T-shaped limiting inserting plate 16, the bottom of the installation connecting seat 8 is fixedly provided with a pair of second screws 13, the installation supporting plate 9 is provided with a pair of second through holes in a penetrating way, the diameters and the distances of the pair of second screws 13 are matched with the diameters and the distances of the pair of second through holes, the lengths of the second screws 13 are larger than those of the second through holes on the installation supporting plate 9, the second screws 13 penetrate through the second through holes, the second nuts 14 are, second nut 14 is located the below of installation extension board 9, second through-hole and installation extension board 9 fixed connection on erection joint seat 8 passes through second screw 13 and the installation extension board 9, through with the fixed back of erection joint seat 8, can aim at spout 15 with unable adjustment base 7's one end, insert spout 15 with unable adjustment base 7's lower half, and slide to the leftmost side, later insert the slot of spout 15 bottom from spout 15's top with spacing picture peg 16, and utilize the elastic characteristic of spacing gasket 17, make unable adjustment base 7 firmly compressed tightly in the inside of spout 15, can accomplish the fixed of arrester body 1, the operation is very quick, and is convenient.
The working principle is as follows: firstly, a first screw 6 penetrates through a first through hole on a fixed supporting plate 5, a first screw cap 4 is screwed on, the fixed supporting plate 5 is fixed between the first screw cap 4 and a limiting block, so that the fixing work of the lightning arrester body 1 and a fixed base 7 is completed, then an operator carries the fixed lightning arrester body 1 and the fixed base 7, as well as an installation connecting seat 8 and other tools, and performs ascending installation, firstly, a second screw 13 is aligned to a second through hole on an installation supporting plate 9 and is inserted, then the operator can release the hand without hand operation, the installation connecting seat 8 can be temporarily positioned at the top of the installation supporting plate 9 and cannot slide, then, a second screw cap 14 is screwed on the second screw 13 to complete the fixing of the installation connecting seat 8, then, a thread groove at the bottom of the fixed base 7 is aligned to a fourth screw 11, and the fixed base 7 is rotated to fix the fourth screw 11 at the bottom of the fixed base 7, then one hand can be released, only one-hand operation is needed, the other hand can be used for holding an operation tool, the third screw 12 is inserted into the threaded hole on the fixed base 7, the third screw is screwed to the bottommost part by using the tool to complete fixed installation, the firmness of the lightning arrester body 1 can be ensured in the whole installation process, and the installation process does not need to be simultaneously operated by two hands all the time, so that the convenience in operation can be provided, or after the installation connecting seat 8 is fixed, one end of the fixed base 7 can be aligned to the sliding groove 15, the lower half part of the fixed base 7 is inserted into the sliding groove 15 and slides to the leftmost side, then the limiting inserting plate 16 is inserted into the slot at the bottom of the sliding groove 15 from the top of the sliding groove 15, and the elastic characteristic of the limiting gasket 17 is utilized, so that the fixed base 7 is tightly pressed in the sliding groove 15, the lightning arrester body 1 can be firmly fixed, in work, when the lightning arrester body 1 breaks down, the soluble supporting column 21 is melted by using power frequency short-circuit current, the supporting transverse plate 18 is pushed to move downwards under the action of the elastic force of the spring 20, so that the fixing shaft 2 fixedly connected with the supporting transverse plate 18 moves downwards, the indication mark 3 on the fixing shaft 2 is shortened, and whether the lightning arrester body 1 breaks down or not can be known by observing the length change of the indication mark 3 exposed outside the lightning arrester body 1, one-by-one test is not needed, the operation efficiency can be greatly improved, when the lightning arrester body 1 breaks down, the lightning arrester body 1 can be taken down and replaced by only dismounting the third screw 12 and the second screw cap 14, or the upper part of the limiting inserting plate 16 is pulled upwards directly, the limiting inserting plate 16 can be taken down, and then the fixing base 7 slides out of the sliding groove 15, so that the lightning arrester body 1 can be detached, and replacing the metal tube.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an arrester for high altitude distribution system, includes arrester body (1), unable adjustment base (7), erection joint seat (8), installation extension board (9), its characterized in that: the lightning arrester is characterized in that a fixed shaft (2) penetrates through the top of the lightning arrester body (1) in a movable mode, the top of the fixed shaft (2) extends to the outside of the lightning arrester body (1), the bottom of the fixed shaft (2) extends to the inner cavity of the lightning arrester body (1), an insulating support column (22) is fixedly mounted on the inner wall of the lightning arrester body (1), an indication mark (3) is arranged on the outer surface of the fixed shaft (2) located outside the lightning arrester body (1), a support transverse plate (18) is fixedly mounted at the bottom of the fixed shaft (2) located in the inner cavity of the lightning arrester body (1), a spring (20) is movably sleeved on the outer surface of the fixed shaft (2) located in the inner cavity of the lightning arrester body (1), the spring (20) is located between the top surface of the support transverse plate (18) and the top surface of the inner cavity of the lightning arrester body (1), and a soluble support column, the bottom of the soluble supporting column (21) is fixedly connected with a fixing plate (19), the outer surface of the fixing plate (19) is fixedly connected with the inner wall of an insulating supporting column (22), the bottom of the arrester body (1) is fixedly provided with a grounding end (10), the bottom of the outer surface of the arrester body (1) is fixedly sleeved with a fixing supporting plate (5), the bottom of the outer surface of the arrester body (1) is provided with a thread, the fixing supporting plate (5) is provided with a thread through hole corresponding to the thread, the thread through hole penetrates through the top surface and the bottom surface of the fixing supporting plate (5), the arrester body (1) is in threaded connection with the fixing supporting plate (5) through the thread through hole, the fixing supporting plate (5) is further provided with a plurality of first through holes, and the first through holes penetrate through the top surface and the bottom surface of the fixing supporting plate (5, the lightning arrester is characterized in that a plurality of first screws (6) are fixedly welded at the top of the fixed base (7), each first screw (6) is respectively matched with each first through hole on the fixed supporting plate (5), a limiting block is sleeved on the outer surface of each first screw (6), each first through hole on the fixed supporting plate (5) is respectively penetrated through the top of each first screw (6), a first nut (4) is connected with the top of each first screw (6) in a threaded manner, the fixed supporting plate (5) is fixed between the first nut (4) and the limiting block, the length of the grounding end (10) is smaller than the distance from the bottom of the lightning arrester body (1) to the top of the fixed base (7), the fixed base (7) is fixedly connected with the installation connecting base (8), the installation connecting base (8) is positioned below the fixed base (7), and a pair of second screws (13) is fixedly installed at the bottom of the installation connecting base (8), the mounting support plate (9) is provided with a pair of second through holes in a penetrating mode, the diameter and the distance of the pair of second screws (13) are matched with those of the pair of second through holes, the length of each second screw (13) is larger than that of the corresponding second through hole in the mounting support plate (9), each second screw (13) penetrates through the corresponding second through hole, a second nut (14) is sleeved on the surface of each second screw (13) in a threaded mode, the second nut (14) is located below the mounting support plate (9), and the mounting and connecting seat (8) is fixedly connected with the mounting support plate (9) through the second screws (13) and the second through holes in the mounting support plate (9).
2. A lightning arrester for an overhead power distribution system according to claim 1, characterized in that: the bottom of the fixed base (7) is provided with a first thread groove, the top of the mounting and connecting base (8) is fixedly provided with a fourth screw (11), the fourth screw (11) is matched with the thread groove at the bottom of the fixed base (7), the fourth screw (11) is in threaded connection with the fixed base (7) through the thread groove, the fixed base (7) is provided with a plurality of threaded holes which penetrate through the top surface and the bottom surface of the fixed base (7), the top of the mounting and connecting base (8) is provided with a plurality of second thread grooves, the threaded holes on the fixed base (7) are equal in diameter to the second thread grooves at the top of the mounting and connecting base (8) and are corresponding in position, the threaded holes on the fixed base (7) and the internal threads of the second thread grooves at the top of the mounting and connecting base (8) are inserted with third screws (12), and the top of the third screws (12) is fixedly provided with a rotating cap, and the fixed base (7) is fixedly connected with the mounting and connecting seat (8) through a fourth screw (11) and a third screw (12).
3. A lightning arrester for an overhead power distribution system according to claim 1, characterized in that: the top of the mounting and connecting seat (8) is provided with a sliding chute (15), the sliding chute (15) penetrates through the right side surface of the mounting and connecting seat (8), the longitudinal sections of the sliding chute (15) and the fixed base (7) are in an inverted T shape, the lower half part of the fixed base (7) is positioned in the sliding chute (15), the fixed base (7) is connected with the installation connecting seat (8) in a sliding way through a sliding chute (15), the bottom of the sliding groove (15) is provided with a slot, the inside of the slot is movably inserted with a limit inserting plate (16), a limit gasket (17) is fixedly bonded on the side surface of the limit inserting plate (16) close to the fixed base (7), the limit gasket (17) is connected with the right side surface of the fixed base (7) and the slot at the bottom of the sliding groove (15) in a pressure-equalizing and tight manner, the longitudinal section of the limiting insertion plate (16) is L-shaped, and the height of the limiting insertion plate (16) is greater than that of the fixed base (7).
4. A lightning arrester for an overhead power distribution system according to claim 1, characterized in that: the indicating marks (3) are color coatings printed on the outer surface of the fixing shaft (2), the number of the indicating marks (3) is not less than two, the interval between every two indicating marks (3) is 0.5-0.8cm, and the width of each indicating mark (3) is 0.3-1 cm.
5. A lightning arrester for an overhead power distribution system according to claim 1, characterized in that: the soluble support column (21) is made of tin.
6. A lightning arrester for an overhead power distribution system according to claim 1, characterized in that: the fixed shaft (2) is made of steel.
7. A lightning arrester for an overhead power distribution system according to claim 2, characterized in that: the number of the threaded holes in the fixed base (7) and the number of the second threaded grooves in the top of the mounting and connecting seat (8) are not less than two.
8. A lightning arrester for an overhead power distribution system according to claim 3, characterized in that: the limiting insertion plate (16) is made of a steel sheet, and the limiting insertion plate (16) can also be made into a T shape.
9. A lightning arrester for an overhead power distribution system according to claim 3, characterized in that: the limiting gasket (17) is made of rubber, and the thickness of the limiting gasket (17) is 0.2-0.5 cm.
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| CN202011038057.2A CN112242688B (en) | 2020-09-28 | 2020-09-28 | Lightning arrester for high-altitude power distribution system |
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| CN202011038057.2A CN112242688B (en) | 2020-09-28 | 2020-09-28 | Lightning arrester for high-altitude power distribution system |
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Cited By (1)
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| CN112242688B (en) | 2021-12-17 |
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Effective date of registration: 20211129 Address after: 150030, No. 61, building North Street, Xiangfang District, Heilongjiang, Harbin Applicant after: STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY LIMITED, ELECTRIC POWER Research Institute Applicant after: State Grid Co., Ltd. Address before: Sichuan Kunlun Electric Power Co., Ltd., No. 495, section 3, Tianyuan Road, Chengdu, Sichuan 610500 Applicant before: Luo Qinqin |
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