CN210195412U - Cross arm and power transmission pole - Google Patents
Cross arm and power transmission pole Download PDFInfo
- Publication number
- CN210195412U CN210195412U CN201920338575.2U CN201920338575U CN210195412U CN 210195412 U CN210195412 U CN 210195412U CN 201920338575 U CN201920338575 U CN 201920338575U CN 210195412 U CN210195412 U CN 210195412U
- Authority
- CN
- China
- Prior art keywords
- arrester core
- cross arm
- lightning arrester
- hollow
- core body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 32
- 239000002184 metal Substances 0.000 claims description 55
- 229910052751 metal Inorganic materials 0.000 claims description 55
- 125000006850 spacer group Chemical group 0.000 claims description 18
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 10
- 239000010931 gold Substances 0.000 description 10
- 229910052737 gold Inorganic materials 0.000 description 10
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Landscapes
- Insulators (AREA)
Abstract
The application discloses a cross arm and a power transmission pole, wherein the cross arm comprises a hollow pipe, and the hollow pipe is axially arranged to be of a hollow structure; the wire hanging hardware fitting is positioned outside the hollow pipe, is connected with the hollow pipe and is used for hanging the power transmission line; the lightning arrester core body is positioned in the hollow tube and insulated from the hollow tube, the input end of the lightning arrester core body is electrically connected with the wire hanging hardware fitting, and the output end of the lightning arrester core body is electrically connected with the grounding bracket. The cross arm that this application provided possesses the lightning protection function, and simple structure, simple to operate.
Description
Technical Field
The application relates to the technical field of power transmission, in particular to a cross arm and a power transmission pole.
Background
In the technical field of electrical equipment, a cross arm used by a transmission line is an important matched structural member of a transmission pole, is used for supporting the transmission line and ensures that the transmission line has a specified safety distance.
The inventor of the present application has found in long-term research that, in the prior art, the cross arm itself does not have a lightning protection function, and if the power transmission line is to be protected from lightning strike, a lightning arrester must be additionally connected in parallel, which inevitably requires an increase in connecting parts and installation space, resulting in a complicated structure and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cross arm and transmission of electricity pole can make the cross arm possess the lightning protection function, and simple structure.
In order to solve the technical problem, the application adopts a technical scheme that: providing a cross arm comprising: the hollow pipe is axially arranged to be a hollow structure; the wire hanging hardware fitting is positioned outside the hollow pipe, is connected with the hollow pipe and is used for hanging a power transmission line; the lightning arrester core body is positioned in the hollow tube and insulated from the hollow tube, the input end of the lightning arrester core body is electrically connected with the wire hanging hardware fitting, and the output end of the lightning arrester core body is electrically connected with the grounding bracket.
Wherein, still include: and the disconnector is positioned outside the hollow pipe and is connected between the lightning arrester core body and the grounding bracket in series.
Wherein, still include: and the metal end cover is used for sealing the end part of the hollow pipe and electrically connecting the lightning arrester core body and the wire hanging hardware fitting positioned at the end part.
Wherein, still include: and the conductive spring is positioned in the hollow tube, elastically supported between the metal end cover and the lightning arrester core body, and electrically connected with the metal end cover and the lightning arrester core body.
The arrester core body comprises a plurality of nonlinear resistance valve plates which are spaced from each other along the axial direction and are connected in series.
The arrester core body further comprises a plurality of metal cushion blocks which are spaced from each other along the axial direction and connect the nonlinear resistance valve plates in series, the nonlinear resistance valve plates and the metal cushion blocks are arranged in an alternating mode, each nonlinear resistance valve plate is clamped by two metal cushion blocks, and the two metal cushion blocks which are not clamped by the two nonlinear resistance valve plates are respectively used as the input end and the output end of the arrester core body.
The plurality of nonlinear resistance valve plates and the plurality of metal cushion blocks are limited in the hollow pipe in an interference fit mode, and the spacing distance between the adjacent nonlinear resistance valve plates is gradually increased in the direction from the input end to the output end.
The cross arm further comprises a connecting hardware fitting; the number of the hollow pipes is multiple, one end parts of the hollow pipes are connected with the connecting hardware fittings at the same time, the lightning arrester core bodies are arranged in the hollow pipes, the other end parts of the hollow pipes are connected with wire hanging hardware fittings corresponding to the lightning arrester core bodies, and the wire hanging hardware fittings are electrically connected with the input ends of the corresponding lightning arrester core bodies; the connecting hardware fitting is provided with a through hole, and the output ends of the lightning arrester core bodies in the hollow pipes are electrically connected with the grounding support through the through hole respectively through wires.
The outer peripheral surface of the hollow pipe is coated with an insulating layer, and the insulating layer is a silicone rubber umbrella skirt which is integrally injection-molded.
In order to solve the above technical problem, another technical solution adopted by the present application is: a power transmission pole is provided, and the power transmission pole comprises the cross arm.
The beneficial effect of this application is: the cross arm in this application places the arrester core body in the inside of hollow tube, the input that sets up the arrester core body is connected with the overhead line gold utensil electricity, the output is connected with the ground connection support electricity, make full use of the inner space of hollow tube, moreover, the steam generator is simple in structure, when taking place the thunderbolt, the resistance of arrester core body sharply descends, thereby the electric current in the twinkling of an eye that the thunderbolt produced passes through the overhead line gold utensil in proper order, the leading-in ground connection support of arrester core body, thereby the power transmission line that the protection overhead line gold utensil hung, realize that the cross arm itself.
Simultaneously the cross arm of this application still utilizes the tip of metal end cover closing cap hollow tube, and the arrester core and the overhead line gold utensil are connected to the metal end cover electricity, can protect the arrester core to make it avoid the erosion of external water, acid etc. also can guarantee the electric connection of overhead line gold utensil and arrester core. This application still sets up elastic support's electrically conductive spring between metal end cover and arrester core in addition, avoids the electric connection between metal end cover and the arrester core to receive displacement, contact surface influence such as uneven.
In addition, the arrester core body in the cross arm can ensure good conductivity between the nonlinear resistance valve plates by clamping each nonlinear resistance valve plate by the two metal cushion blocks. And the spacing distance between the adjacent nonlinear resistance valve plates is gradually increased in the direction from the input end to the output end, so that a good insulation effect is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are 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 to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of a cross arm of the present application;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a schematic structural diagram of another embodiment of a cross arm of the present application;
fig. 4 is a schematic structural diagram of an embodiment of the transmission pole of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all 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 application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a cross arm of the present application. The cross arm 100 in the present application includes a hollow pipe 110, a wire-hanging fitting 120, and a lightning arrester core 130.
The hollow tube 110 is axially configured as a hollow structure, and can accommodate other elements therein, wherein the hollow tube 110 can be a circular tube or a square tube. The wire hanging fitting 120 is used for hanging the power transmission line 121, the wire hanging fitting 120 is located outside the hollow tube 110 and connected with the hollow tube 110, and the wire hanging fitting 120 has conductivity and is made of conductive materials such as iron, copper and alloy. The surge arrester core 130 is located inside the hollow tube 110 and is insulated from the hollow tube 110, and specifically, the hollow tube 110 itself is an insulating tube to achieve insulation between the surge arrester core 130 and the hollow tube 110, or the hollow tube 110 is a conductive tube, but the inner wall of the hollow tube 110 and the surge arrester core 130 are isolated by an insulating member to achieve insulation between the surge arrester core 130 and the hollow tube 110. The input end 1301 of the arrester core 130 is electrically connected to the wire-hanging fitting 120, and the output end 1302 is electrically connected to the grounding bracket 140, that is, the wire-hanging fitting 120, the arrester core 130, and the grounding bracket 140 are connected in series.
Specifically, the lightning arrester core 130 has a nonlinear volt-ampere characteristic, when the lightning arrester core 130 is not struck by lightning and is in a normal operating voltage, the lightning arrester core 130 is in a high-resistance state, only a small current is allowed to pass or not allowed to pass, when the lightning arrester core 130 is struck by lightning and is in an overvoltage state, the resistance of the lightning arrester core 130 is rapidly reduced, the resistance of a circuit formed by connecting the wire hanging fitting 120, the lightning arrester core 130 and the grounding bracket 140 in series is small, and thus an instantaneous current generated by the lightning sequentially flows into the grounding bracket 140 through the wire hanging fitting 120 and the lightning arrester core 130, and finally the power transmission line 121 suspended by the wire hanging fitting 120 is protected.
It can be seen from the above that, the cross arm 100 in this application is simple in structure, and it places the arrester core 130 in the inside of hollow tube 110, has effectively utilized the inner space of hollow tube 110, has saved installation space when making cross arm 100 possess the lightning protection function, the installation of being convenient for, and because hollow tube 110 and arrester core 130 insulation setting need set up solitary insulating overcoat for the arrester compared with prior art, it can save the cost.
In an application scenario, as shown in fig. 1, in order to prevent the hollow tube 110 from being corroded by various natural factors such as water, electricity, light, acid and the like due to long-term exposure to air, the outer circumferential surface of the hollow tube 110 is coated with an insulating layer 150, the insulating layer 150 is a silicone rubber umbrella skirt which is integrally injection-molded, and the silicone rubber umbrella skirt has good hydrophobicity and aging resistance and long service life. In this application scenario, the hollow tube 110 is a core rod formed by a pultrusion process, the core rod is usually formed by pultrusion after mixing glass fiber and resin, and the core rod itself is insulated and can directly contact with the lightning arrester core 130.
In one application scenario, as shown in fig. 1, to protect the surge arrester core 130, the cross arm 100 further includes a disconnector 160. The disengager 160 is located outside the hollow pipe 110 and is connected in series between the surge arrester core 130 and the grounding bracket 140. Specifically, as shown in fig. 2, fig. 2 is an enlarged schematic view of a point a in fig. 1, when the arrester core 130 has an abnormal fault, the disconnector 160 automatically bursts to disconnect the electrical connection with the grounding bracket 140, thereby cutting off a path formed by the wire-hanging fitting 120, the arrester core 130, the disconnector 160 and the grounding bracket 140, preventing the fault from further expanding, and meanwhile, since the disconnector 160 is in a disconnected state, a maintenance worker can timely find a fault point and save maintenance time.
In one application scenario, with continued reference to fig. 1, to avoid subjecting the arrester core 130 to oxidation by external moisture, acid corrosion, etc., the cross arm 100 further includes a metal end cap 170. The metal end cap 170 covers the end 111 of the hollow tube 110, and the metal end cap 170 electrically connects the arrester core 130 and the wire harness 120 located at the end 111. Specifically, the metal end cover 170 is a conductive element, and is directly abutted to the input end 1301 of the arrester core 130 to realize electrical connection with the arrester core 130, and the wire hanging fitting 120 is fixed at the end 111 by means of gluing or crimping, so as to ensure good conductivity among the wire hanging fitting 120, the metal end cover 170 and the arrester core 130, and at this time, the wire hanging fitting 120, the metal end cover 170, the arrester core 130 and the grounding bracket 140 form a passage.
Optionally, in this application scenario, in order to avoid the lightning arrester core 130 being electrically disconnected from the metal end cap 170, the cross arm 100 further includes a conductive spring 180, and the conductive spring 180 is located inside the hollow tube 110, elastically supported between the metal end cap 170 and the lightning arrester core 130, and electrically connected to the metal end cap 170 and the lightning arrester core 130. Since the conductive spring 180 has elasticity, even if the surge arrester core 130 is displaced or the input end 1301 has an uneven surface and is no longer in contact with the metal end cover 170, the conductive spring 180 can ensure electrical connection between the metal end cover 170 and the surge arrester core 130.
In one application scenario, with continued reference to fig. 1, the surge arrester core 130 includes a plurality of nonlinear resistive valve plates 131 axially spaced from one another and connected in series. The nonlinear resistor valve plate 131 may be a zinc oxide valve plate or a special silicon carbide valve plate. The nonlinear resistor valve sheet 131 has a good nonlinear volt-ampere characteristic, and when the valve sheet is struck by lightning, the resistance value drops sharply, so that the instantaneous current generated by the lightning can be released. In the application scenario, specifically, referring to fig. 1, the lightning arrester core 130 further includes a plurality of metal spacers 132, the plurality of metal spacers 132 are axially spaced from each other and connect the plurality of nonlinear resistive valve plates 131 in series, wherein the nonlinear resistive valve plates 131 and the metal spacers 132 are alternately arranged, and each nonlinear resistive valve plate 131 is clamped by two metal spacers 132, that is, for the same nonlinear resistive valve plate 131, there are two metal spacers 132 respectively attached to two surfaces of the same nonlinear resistive valve plate 131 that are opposite to the metal spacer 132, so that the two adjacent nonlinear resistance valve plates 131 are electrically connected through the metal spacer 132 between the two. The two metal spacers 132 not sandwiched by the two nonlinear resistance valve plates 131 are respectively used as an input end 1301 and an output end 1302 of the arrester core 130, that is, as shown in fig. 1, one of the metal spacers 132 located at the head end and the tail end of the arrester core 130 is used as the input end 1301 to be electrically connected to the metal end cover 170, and the other is used as the output end 1302 to be electrically connected to the grounding bracket 140, specifically, the metal spacer 132 used as the input end 1301 is directly attached to the metal end cover 170, or the conductive spring 180 in the above application scenario is used to be electrically connected to the metal end cover 170, the metal spacer 132 used as the output end 1302 is electrically connected to the grounding bracket 140 through the wire 133, where the wire 133 is a copper. Meanwhile, in the application scenario, when the cross arm 100 is manufactured, the nonlinear resistance valve plates 131 and the metal cushion blocks 132 are respectively pressed into the hollow tube 110 in a light-pressing manner, and finally the plurality of nonlinear resistance valve plates 131 and the plurality of metal cushion blocks 132 are limited in the hollow tube 110 in an interference fit manner. Optionally, in other application scenarios, the plurality of nonlinear resistance valve plates 131 and the plurality of metal spacers 132 may also be fixed inside the hollow tube 110 by gluing, wherein the application is not limited as to how the nonlinear resistance valve plates 131 and the metal spacers 132 are fixed inside the hollow tube 110.
In addition, considering that the voltage at the input terminal 1301 of the surge arrester core 130 is higher than that at the output terminal 1302, in order to ensure relatively good insulation, as shown in fig. 1, the spacing distance between adjacent nonlinear resistive sheets 131 gradually increases in the direction from the input terminal 1301 to the output terminal 1302, that is, the concentration of the nonlinear resistive sheets 131 at the input terminal 1301 of the surge arrester core 130 is greater than that at the output terminal 1302.
Wherein the cross arm 100 in the present application needs to determine the number of the lightning arrester core bodies 130 located inside the hollow pipe 110 according to the number of the wire hanging fittings 120. Specifically, when only one end of the cross arm 100 needs to be connected with the wire hanging fitting 120, the number of the lightning arrester core bodies 130 inside the hollow tube 110 is one, as shown in fig. 1, and the conducting wire 133 electrically connected to the output end 1302 of the lightning arrester core body 130 may extend outward from the end of the hollow tube 110 to which the wire hanging fitting 120 is not connected; when the wire hanging fittings 120 are required to be connected to both ends of the cross arm 100, if only one hollow tube 110 exists, the wire hanging fittings 120 must be connected to both ends of the hollow tube 110, and meanwhile, in order to protect the transmission line 121 suspended by the two wire hanging fittings 120, the number of the lightning arrester core bodies 130 inside the hollow tube 110 is two, but since both ends of the hollow tube 110 are connected with the wire hanging fittings 120, in order to electrically connect the output end 1302 of the lightning arrester core body 130 with the grounding bracket 140, at this time, a hole must be drilled in the hollow tube 110 so that the lead 133 electrically connected to the output end 1302 of the lightning arrester core body 130 extends outwards, and the mechanical properties of the hollow tube 110 are influenced by drilling the hole in the hollow tube 110, so referring to fig. 3, which is a schematic structural diagram of another embodiment of the cross arm 100 of the present application, different from the above embodiment, the number of the hollow tube 110 in the present embodiment is plural, the link fitting 190 connects the plurality of hollow tubes 110, and the link fitting 190 is provided with a through hole 191.
Specifically, the lightning arrester core 130 is disposed inside each of the plurality of hollow tubes 110, and the end 111 of each of the plurality of hollow tubes 110 is connected to the wire hanging fitting 120 corresponding to and electrically connected to the lightning arrester core 130, that is, for one hollow tube 110, the wire hanging fitting 120 connected thereto is electrically connected to the lightning arrester core 130 inside thereof. The connecting hardware 190 is fixed to one end of the hollow tubes 110, to which the wire hanging hardware 120 is not connected, in a covering manner, and the output ends 1302 of the lightning arrester core bodies 130 in the hollow tubes 110 are electrically connected to the grounding bracket 140 through the through holes 191 of the connecting hardware 190 via the wires 133, respectively. That is, in the present embodiment, the plurality of hollow tubes 110 are connected by the connection fittings 190, and the holes formed in the hollow tubes 110 for ensuring the operation of the core 130 of the surge arrester can be eliminated while the plurality of wire hanging fittings 120 are connected to one cross arm 100 and the multiplex transmission line 121 is hung.
In an application scenario, referring to fig. 3, the number of the hollow pipes 110 is two, and one ends of the two hollow pipes 110, which are not connected to the wire hanging fitting 120, are connected to two opposite ends of the connecting fitting 190, respectively. When the cross arm 100 in this application scenario is mounted to a transmission pole, the two hollow tubes 110 are symmetric about the pole body of the transmission pole. Of course, in other application scenarios, the number of the hollow tubes 110 may also be three, five or more, and is not limited herein.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of the power transmission pole of the present application. The power transmission pole 200 includes a pole body 210 and a cross arm 220.
The cross arm 220 is disposed on the rod body 210, the cross arm 220 is the cross arm 100 in any of the above embodiments, and the detailed structure can be referred to the above embodiments, which is not described herein again.
It can be understood that, since the cross arm 210 in the present application is the cross arm 100 in any of the above embodiments, the power transmission pole 200 itself also has the lightning protection function, and it is possible to reduce the installation of a separate lightning arrester for the power transmission pole 200 or to eliminate the need to additionally install a separate lightning arrester for the power transmission pole 200, thereby reducing the number of connectors and installation space, and further saving the cost.
All in all, the cross arm in this application places the arrester core body in the inside of hollow tube, the input that sets up the arrester core body is connected with the overhead line gold utensil electricity, the output is connected with the ground connection support electricity, make full use of the inner space of hollow tube, moreover, the steam generator is simple in structure, when taking place the thunderbolt, the resistance of arrester core body sharply descends, thereby the instantaneous current that the thunderbolt produced passes through the overhead line gold utensil in proper order, the leading-in ground connection support of arrester core body, thereby the power transmission line that the overhead line gold utensil hung is protected, realize that the cross arm itself possesses the lightning protection function.
Simultaneously the cross arm of this application still utilizes the tip of metal end cover closing cap hollow tube, and the arrester core and the overhead line gold utensil are connected to the metal end cover electricity, can protect the arrester core to make it avoid the erosion of external water, acid etc. also can guarantee the electric connection of overhead line gold utensil and arrester core. This application still sets up elastic support's electrically conductive spring between metal end cover and arrester core in addition, avoids the electric connection between metal end cover and the arrester core to receive displacement, contact surface influence such as uneven.
In addition, the arrester core body in the cross arm can ensure good conductivity between the nonlinear resistance valve plates by clamping each nonlinear resistance valve plate by the two metal cushion blocks. And the spacing distance between the adjacent nonlinear resistance valve plates is gradually increased in the direction from the input end to the output end, so that a good insulation effect is ensured.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (10)
1. A cross arm, comprising:
the hollow pipe is axially arranged to be a hollow structure;
the wire hanging hardware fitting is positioned outside the hollow pipe, is connected with the hollow pipe and is used for hanging a power transmission line;
the lightning arrester core body is positioned in the hollow tube and insulated from the hollow tube, the input end of the lightning arrester core body is electrically connected with the wire hanging hardware fitting, and the output end of the lightning arrester core body is electrically connected with the grounding bracket.
2. The cross arm of claim 1, further comprising:
and the disconnector is positioned outside the hollow pipe and is connected between the lightning arrester core body and the grounding bracket in series.
3. The cross arm of claim 1, further comprising:
and the metal end cover is used for sealing the end part of the hollow pipe and electrically connecting the lightning arrester core body and the wire hanging hardware fitting positioned at the end part.
4. The cross arm of claim 3, further comprising:
and the conductive spring is positioned in the hollow tube, elastically supported between the metal end cover and the lightning arrester core body, and electrically connected with the metal end cover and the lightning arrester core body.
5. The cross arm of claim 1, wherein the arrester core includes a plurality of non-linear resistive valve plates spaced apart from each other in the axial direction and connected in series.
6. The cross arm of claim 5, wherein the arrester core further comprises a plurality of metal spacers spaced apart from each other along the axial direction and connecting the plurality of nonlinear resistive segments in series with each other, the nonlinear resistive segments and the metal spacers are alternately arranged, and each of the nonlinear resistive segments is sandwiched by two of the metal spacers, wherein the two metal spacers that are not sandwiched by two of the nonlinear resistive segments serve as the input end and the output end of the arrester core, respectively.
7. The cross arm of claim 6, wherein the plurality of nonlinear resistor valve plates and the plurality of metal spacers are retained inside the hollow tube in an interference fit manner, and a spacing distance between adjacent nonlinear resistor valve plates gradually increases in a direction from the input end to the output end.
8. The cross arm of claim 1,
the cross arm further comprises a connecting hardware fitting;
the number of the hollow pipes is multiple, one end parts of the hollow pipes are connected with the connecting hardware fittings at the same time, the lightning arrester core bodies are arranged in the hollow pipes, the other end parts of the hollow pipes are connected with wire hanging hardware fittings corresponding to the lightning arrester core bodies, and the wire hanging hardware fittings are electrically connected with the input ends of the corresponding lightning arrester core bodies;
the connecting hardware fitting is provided with a through hole, and the output ends of the lightning arrester core bodies in the hollow pipes are electrically connected with the grounding support through the through hole respectively through wires.
9. The cross arm of claim 1,
the periphery of the hollow pipe is coated with an insulating layer, and the insulating layer is a silicone rubber umbrella skirt which is integrally injection-molded.
10. A power transmission pole, characterized in that the power transmission pole comprises a pole body and a cross arm according to any one of claims 1 to 9 provided on the pole body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920338575.2U CN210195412U (en) | 2019-03-15 | 2019-03-15 | Cross arm and power transmission pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920338575.2U CN210195412U (en) | 2019-03-15 | 2019-03-15 | Cross arm and power transmission pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210195412U true CN210195412U (en) | 2020-03-27 |
Family
ID=69879822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920338575.2U Withdrawn - After Issue CN210195412U (en) | 2019-03-15 | 2019-03-15 | Cross arm and power transmission pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210195412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914899A (en) * | 2019-03-15 | 2019-06-21 | 江苏神马电力股份有限公司 | Cross-arm and power transmission rod |
-
2019
- 2019-03-15 CN CN201920338575.2U patent/CN210195412U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914899A (en) * | 2019-03-15 | 2019-06-21 | 江苏神马电力股份有限公司 | Cross-arm and power transmission rod |
| CN109914899B (en) * | 2019-03-15 | 2024-08-27 | 江苏神马电力股份有限公司 | Cross arm and transmission pole |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102157253B (en) | Outer-gap lightning arrester | |
| CN203386547U (en) | Integrated fixed external series gap self-disengaging metal oxide lightning arrester insulators | |
| CN111091941A (en) | Pillar insulator type lightning arrester for integral electrified railway | |
| CN210195412U (en) | Cross arm and power transmission pole | |
| CN112750584A (en) | Fault indication and live-line disassembly and assembly method applied to fixed-gap lightning arrester | |
| CN202120693U (en) | Pillar type arc preventing insulator | |
| CN201498604U (en) | Lightning-shielding ground protection device | |
| CN109586235B (en) | A outer lightning rod ground structure of leading of resistant angle steel tower for open area and many thunder district environment | |
| CN203573757U (en) | Supporting assembly with lightning-protection function | |
| CN109914899B (en) | Cross arm and transmission pole | |
| CN207353032U (en) | A kind of outdoor electricity distribution equipment arrester | |
| CN212782894U (en) | Device for improving pollution flashover resistance of suspension insulator | |
| CN202197102U (en) | Line Fixed Gap Overvoltage Protector | |
| CN215417710U (en) | 10kV column type insulator insulation guard shield | |
| CN201498967U (en) | Angle-form over-voltage protection device | |
| CN202940459U (en) | Lightning arrester used in extra-high voltage alternating-current electric transmission line | |
| CN109103641A (en) | Spininess group probe unit | |
| CN2438213Y (en) | Composite insulation zinc oxide arrester for lightning protection of line | |
| CN215069462U (en) | Insulating pillar lightning arrester with external series gap | |
| CN208753573U (en) | Spininess group probe unit | |
| CN209375102U (en) | A kind of cross connection grounding case with adjustable conductive connection plates | |
| CN203631984U (en) | Fixed gap arrester | |
| CN109215902B (en) | 500kV line lightning protection device based on arrester and insulator | |
| CN218568533U (en) | Lightning protection type column type porcelain insulator | |
| CN201072678Y (en) | Composite casing metal oxide arrester for maintenance-free alternating current electric power line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200327 Effective date of abandoning: 20240827 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200327 Effective date of abandoning: 20240827 |