CN212542061U - Hard epoxy resin insulator - Google Patents
Hard epoxy resin insulator Download PDFInfo
- Publication number
- CN212542061U CN212542061U CN202021794113.0U CN202021794113U CN212542061U CN 212542061 U CN212542061 U CN 212542061U CN 202021794113 U CN202021794113 U CN 202021794113U CN 212542061 U CN212542061 U CN 212542061U
- Authority
- CN
- China
- Prior art keywords
- sheath
- buffer layer
- core rod
- hardware
- hard epoxy
- 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.)
- Active
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 70
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 27
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 27
- 238000010073 coating (rubber) Methods 0.000 claims abstract description 4
- 239000004593 Epoxy Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 14
- 239000007822 coupling agent Substances 0.000 claims description 10
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 239000004945 silicone rubber Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 20
- 239000010931 gold Substances 0.000 abstract description 20
- 229910052737 gold Inorganic materials 0.000 abstract description 20
- 239000002131 composite material Substances 0.000 description 17
- 125000002723 alicyclic group Chemical group 0.000 description 7
- 238000007789 sealing Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 230000009545 invasion Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Insulators (AREA)
- Insulating Bodies (AREA)
Abstract
The application relates to the technical field of insulators, in particular to a hard epoxy resin insulator which comprises hardware fittings, a core rod, a sheath and a buffer layer; the number of the hardware fittings is two, and two ends of the core rod are respectively inserted into the fixing cavities of the two hardware fittings; the sheath is coated outside the core rod exposed outside the hardware fitting, and two ends of the sheath are respectively coated outside the end parts of the two hardware fittings to form a rubber coating head; the buffer layer is sleeved on the core rod, and the buffer layer is arranged between the end part of the hardware fitting and the contact surface of the sheath. This application can improve the atress of tip gold utensil and sheath contact surface department through adding the buffer layer between the contact surface of gold utensil and sheath, and the sheath of protection parcel gold utensil department no longer ftractures, solves the insulator tip among the prior art that the sheath of parcel gold utensil department produces the gap easily and the technical problem of fracture effectively.
Description
Technical Field
The application relates to the technical field of insulators, in particular to a hard epoxy resin insulator.
Background
The main body of the composite insulator comprises an umbrella skirt sheath and a core rod except for the end hardware fitting. Under general conditions, the shed sheath is made of organic materials, and the core rod is generally made of composite materials consisting of glass fiber reinforced materials and epoxy resin matrixes. The interface between the different materials is often a weak link in the overall system. The interface between the core rod and the sheath is a macroscopic interface with the largest inner area of the composite insulator, the influence on the composite insulator is the largest, and main accidents of the composite insulator are related to the part of the interface. Wherein the interfacial breakdown is directly related to the core rod-sheath interface quality; core rod breakage is also believed to be related to defects at the core rod-sheath interface.
The hard alicyclic epoxy resin insulator belongs to a novel insulator, but the alicyclic epoxy resin material has high modulus and low elongation. Under the tensile atress condition of insulator, the contact interface of tip gold utensil and sheath is debonded very easily and is formed the small gap of rigidity, and the stress concentration is located to the tip of gap, and then leads to the gap constantly to extend, leads to the sheath fracture of parcel gold utensil department, causes the sealed inefficacy of tip. If the end part of the insulator fails to be sealed, external water vapor and dirt can invade the interface between the sheath and the core rod and corrode the core rod, so that the interface aging at the position of the sheath and the core rod is accelerated, and the operation safety of a power grid is threatened. Therefore, how to solve the problem of cracking of the sheath at the part of the hard epoxy resin composite insulator, which is wrapped by the hardware, has very important significance for safe operation of the hard epoxy resin composite insulator.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present application is to provide a hard epoxy insulator, which effectively solves the technical problem in the prior art that a crack is easily generated in a sheath at a fitting-wrapped position at an end of the insulator.
In order to achieve the purpose, the application provides the following technical scheme:
a hard epoxy resin insulator comprises hardware fittings, a core rod, a sheath and a buffer layer;
the number of the hardware fittings is two, and two ends of the core rod are respectively inserted into the fixing cavities of the two hardware fittings;
the sheath is coated outside the core rod exposed outside the hardware fitting, and two ends of the sheath are respectively coated outside the end parts of the two hardware fittings to form a rubber coating head;
the buffer layer is sleeved on the core rod, and the buffer layer is arranged between the end part of the hardware fitting and the contact surface of the sheath.
Preferably, in the above hard epoxy insulator, a first protrusion is disposed at a connection between an inner side wall of the sheath and a side wall of the hardware fitting;
and a first groove matched with the first protrusion is arranged at the joint of the side wall of the hardware fitting and the inner side wall of the sheath.
Preferably, in the above hard epoxy insulator, the first protrusion is provided obliquely.
Preferably, in the above-described hard epoxy insulator, a free end of the first protrusion extends in a direction close to the buffer layer.
Preferably, in the above-mentioned hard epoxy insulator, the number of the first protrusions is plural, and the plural first protrusions are arranged in parallel.
Preferably, in the above hard epoxy insulator, a second protrusion is disposed on a contact surface between the sheath and the buffer layer;
the buffer layer is provided with a second groove matched with the second protrusion.
Preferably, in the above hard epoxy insulator, a third protrusion is disposed on a contact surface of the hardware and the buffer layer;
the buffer layer is provided with a third groove matched with the third bulge.
Preferably, in the above hard epoxy resin insulator, the buffer layer has a thickness of 2mm to 4 mm.
Preferably, in the above-mentioned hard epoxy insulator, the hardware and the sheath are both connected to the buffer layer by a coupling agent.
Preferably, in the above-mentioned hard epoxy insulator, the buffer layer is made of a vulcanized silicone rubber material.
Compared with the prior art, the beneficial effects of this application are:
the application provides a hard epoxy resin insulator which comprises a hardware fitting, a core rod, a sheath and a buffer layer; the number of the hardware fittings is two, and two ends of the core rod are respectively inserted into the fixing cavities of the two hardware fittings; the sheath is coated outside the core rod exposed outside the hardware fitting, and two ends of the sheath are respectively coated outside the end parts of the two hardware fittings to form a rubber coating head; the buffer layer is sleeved on the core rod, and the buffer layer is arranged between the end part of the hardware fitting and the contact surface of the sheath. This application is through adding the buffer layer between the contact surface at gold utensil and sheath, the inconsistent deformation that takes place because of the atress of tip gold utensil and sheath contact surface department will be undertaken by the buffer layer, thereby the rigid small gap has been avoided appearing in tip contact surface department, stress concentration and crack propagation have been avoided, can improve the atress of tip gold utensil and sheath contact surface department, the sheath of protection parcel gold utensil department no longer ftractures, solve the easy technical problem that produces the gap and ftracture of the sheath of insulator tip parcel gold utensil department that exists among the prior art effectively.
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, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hard epoxy insulator according to an embodiment of the present disclosure;
fig. 2 is a partially enlarged view of a hard epoxy insulator according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of a conventional insulator;
fig. 4 is a schematic diagram of a rigid micro gap formed by debonding of a contact surface between a hardware fitting and a sheath of a conventional insulator;
fig. 5 is a schematic view of the existing insulator when the crack of the contact surface between the hardware and the sheath is expanded;
fig. 6 is a schematic view showing a case where a sheath of a conventional insulator is cracked.
In the figure:
1 is a hardware fitting, 2 is a core rod, 3 is a buffer layer, 4 is a sheath, and 5 is a first bulge.
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 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 application.
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.
Referring to fig. 3, the main body of the composite insulator, except for the end hardware, is composed of a shed sheath and a core rod. Under general conditions, the shed sheath is made of organic materials, and the core rod is generally made of composite materials consisting of glass fiber reinforced materials and epoxy resin matrixes. The interface between the different materials is often a weak link in the overall system. The interface between the core rod and the sheath is a macroscopic interface with the largest inner area of the composite insulator, the influence on the composite insulator is the largest, and main accidents of the composite insulator are related to the part of the interface. Wherein the interfacial breakdown is directly related to the core rod-sheath interface quality; core rod breakage is also believed to be related to defects at the core rod-sheath interface.
The alicyclic epoxy resin material is adopted to replace the traditional silicon rubber sheath, and the hard epoxy resin composite insulator developed on the basis of the alicyclic epoxy resin material is a feasible technical route for solving the interface problem of the silicon rubber composite insulator. The umbrella skirt sheath material of the insulator is a moisture-proof and heat-proof alicyclic epoxy resin material (HCEP), and has good hydrophobicity, hydrophobicity migration and recovery, and excellent arc resistance and electric leakage tracking resistance. The production process adopts an automatic pressure gel forming process, and avoids air gaps generated in the production process of the core rod-sheath interface. In addition, the epoxy resin material adopted by the sheath and the insulator core rod belong to the epoxy resin class, so that the adhesive strength is high, and the interface performance is excellent.
The hard alicyclic epoxy resin insulator belongs to a novel insulator, but the alicyclic epoxy resin material has high modulus and low elongation. Under the condition that the insulator is stretched and stressed, a contact interface of the end hardware and the sheath is easily debonded to form a rigid micro gap (see fig. 4), stress is concentrated at the tip of the gap, the gap is further caused to continuously extend (see fig. 5), the sheath wrapping the hardware is caused to crack (see fig. 6), and end sealing failure is caused. If the end part of the insulator fails to be sealed, external water vapor and dirt can invade the interface between the sheath and the core rod and corrode the core rod, so that the interface aging at the position of the sheath and the core rod is accelerated, and the operation safety of a power grid is threatened. Therefore, how to solve the problem of cracking of the sheath at the part of the hard epoxy resin composite insulator, which is wrapped by the hardware, has very important significance for safe operation of the hard epoxy resin composite insulator. The embodiment provides a hard epoxy resin insulator, and the technical problem that a gap is easily generated and cracks in a sheath at the position where an insulator end wraps a hardware fitting in the prior art is effectively solved.
Referring to fig. 1-2, an embodiment of the present application provides a hard epoxy insulator, including a hardware 1, a core rod 2, a sheath 4, and a buffer layer 3; the number of the hardware fittings 1 is two (not shown in the figure), and two ends of the core rod 2 are respectively inserted into the fixing cavities of the two hardware fittings 1; the sheath 4 is coated outside the core rod 2 exposed outside the hardware fittings 1, and two ends of the sheath 4 are respectively coated outside the end parts of the two hardware fittings 1 to form a rubber head; the buffer layer 3 is sleeved on the core rod 2, and the buffer layer 3 is arranged between the end part of the hardware fitting 1 and the contact surface of the sheath 4.
More specifically, the middle part of the hardware 1 is provided with an annular groove, and the annular groove provides a position for facilitating a tool to clamp the hardware 1 so as to install the whole insulator on a power grid line; the inner wall of the hardware 1 and the inner wall of the sheath 4 are both connected with the middle core rod 2 through a coupling agent.
This embodiment is through adding buffer layer 3 between the contact surface at gold utensil 1 and sheath 4, the inconsistent deformation that takes place because of the atress of tip gold utensil 1 and 4 contact surface departments of sheath will be undertaken by buffer layer 3, thereby the small gap of rigidity has been avoided appearing in tip contact surface department, stress concentration and crack propagation have been avoided, can improve the atress of tip gold utensil 1 and 4 contact surface departments of sheath, the sheath 4 of protection parcel gold utensil 1 department no longer ftractures, the technical problem that the sheath 4 of the insulator tip parcel gold utensil 1 department that exists among the prior art produced the gap easily and ftractures is solved effectively.
Further, in the present embodiment, a first protrusion 5 is disposed at a connection position of the inner side wall of the sheath 4 and the side wall of the fitting 1; the junction of the side wall of the fitting 1 and the inner side wall of the sheath 4 is provided with a first groove matched with the first protrusion 5. The sealing performance between the sheath 4 and the hardware fitting 1 can be further improved through the arrangement of the first protrusion 5 and the first groove, and the phenomenon that the insulator core rod 2 is aged, broken and invalid due to the invasion of water vapor can be prevented.
More specifically, a protrusion may be provided on the outer side wall of the fitting 1, and a groove corresponding to the protrusion may be provided on the inner side wall of the sheath 4, which may also serve to increase the sealing performance between the fitting 1 and the sheath 4.
Further, in the present embodiment, the first protrusion 5 is disposed obliquely so that the first protrusion 5 is of a "barb type". The first protrusion 5 and the first groove of the inverted hook type are used as a contact structure of the hardware fitting 1 and the sheath 4, so that the contact area between the sheath 4 and the hardware fitting 1 can be increased, the stress of a unit area is dispersed, and the sheath 4 at the part where the hardware fitting 1 is wrapped can be protected from cracking; and the sealing path between the sheath 4 and the hardware fitting 1 can be effectively prolonged, the water intrusion time is delayed, and the service life of the core rod 2 is prolonged.
More specifically, the barb type contact structure and the coupling agent can increase the air tightness of the hardware fitting 1 and the sheath 4 from the aspects of physical structure and chemical bonding, and ensure the operation safety of the end part of the insulator.
Further, in the present embodiment, the free end of the first protrusion 5 extends in a direction close to the cushioning layer 3. The first protrusion 5 arranged in this way can form a moisture-blocking protection structure for the buffer layer 3 and the mandrel 2, effectively block the intrusion of moisture and prolong the intrusion path of moisture, which is beneficial to slowing down the aging speed of the buffer layer 3 and the mandrel 2, and further prolongs the service life of the buffer layer 3 and the mandrel 2.
Further, in the present embodiment, the first protrusions 5 are plural, and the plural first protrusions 5 are arranged in parallel. The first bulges 5 arranged in parallel can change the moisture invasion path into a zigzag and long path, effectively block the moisture invasion and prolong the moisture invasion path, thereby being beneficial to slowing down the aging speed of the buffer layer 3 and the core rod 2 and further prolonging the service life of the buffer layer 3 and the core rod 2.
Further, in the present embodiment, the contact surface of the sheath 4 and the buffer layer 3 is provided with a second protrusion; the buffer layer 3 is provided with a second groove matched with the second protrusion. The connection stability and the leakproofness between sheath 4 and the buffer layer 3 can be improved effectively through the setting of second arch and second recess, are favorable to avoiding appearing the gap between sheath 4 and the buffer layer 3, and then the sheath 4 of protection parcel gold utensil 1 department no longer ftractures.
Further, in this embodiment, a third protrusion is disposed on a contact surface between the hardware 1 and the buffer layer 3; the buffer layer 3 is provided with a third groove matched with the third protrusion. The setting through third arch and third recess can improve connection stability and leakproofness between gold utensil 1 and the buffer layer 3 effectively, is favorable to avoiding appearing the gap between gold utensil 1 and the buffer layer 3, and then the sheath 4 of protection parcel gold utensil 1 department no longer ftractures.
Further, in the present embodiment, the thickness of the buffer layer 3 is preferably 2mm to 4mm, and the specific thickness of the buffer layer 3 may be set according to actual needs.
Further, in the present embodiment, the metal fittings 1 and the sheaths 4 are both connected to the buffer layer 3 by a coupling agent. The coupling agent can be KH550, KH560 or other types of coupling agents, the connection stability and the sealing performance between the buffer layer 3 and the sheath 4 (or the hardware fitting 1) can be further improved through the coupling agent, the occurrence of gaps between the sheath 4 (or the hardware fitting 1) and the buffer layer 3 is favorably avoided, and the sheath 4 wrapping the hardware fitting 1 is protected from cracking.
Further, in the present embodiment, the buffer layer 3 is specifically a flexible buffer layer 3, and the buffer layer 3 may be made of a high-temperature vulcanized silicone rubber material with good insulating property. Not only can guarantee that buffer layer 3 has good buffering effect, but also guarantee that buffer layer 3 has good insulating properties.
The specific installation mode of the insulator that this embodiment provided does:
(1) and wiping the contact surfaces of the buffer layer 3, the hardware 1 and the like with absolute ethyl alcohol.
(2) Coating a certain amount of coupling agent (KH550, KH560 and other types of coupling agent) on two sides of the treated buffer layer 3 and the bottom of the metal fittings 1, and then assembling the mandrel 2, the metal fittings 1 and the flexible buffer layer 3.
(3) And (3) placing the assembled hardware fitting 1 core rod 2 in an APG mould to complete the injection molding process, and preparing the whole hard epoxy resin composite insulator.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hard epoxy resin insulator is characterized by comprising a hardware fitting, a core rod, a sheath and a buffer layer;
the number of the hardware fittings is two, and two ends of the core rod are respectively inserted into the fixing cavities of the two hardware fittings;
the sheath is coated outside the core rod exposed outside the hardware fitting, and two ends of the sheath are respectively coated outside the end parts of the two hardware fittings to form a rubber coating head;
the buffer layer is sleeved on the core rod, and the buffer layer is arranged between the end part of the hardware fitting and the contact surface of the sheath.
2. The hard epoxy insulator as claimed in claim 1, wherein a first protrusion is arranged at a connection position of the inner side wall of the sheath and the side wall of the hardware fitting;
and a first groove matched with the first protrusion is arranged at the joint of the side wall of the hardware fitting and the inner side wall of the sheath.
3. The hard epoxy insulator according to claim 2, wherein the first protrusion is provided obliquely.
4. The hard epoxy insulator according to claim 3, wherein a free end of the first protrusion extends in a direction approaching the buffer layer.
5. The hard epoxy insulator according to claim 4, wherein the first protrusions are provided in plurality, and the plurality of first protrusions are provided in parallel.
6. The hard epoxy insulator as claimed in claim 1, wherein the contact surface of the sheath and the buffer layer is provided with a second protrusion;
the buffer layer is provided with a second groove matched with the second protrusion.
7. The hard epoxy resin insulator according to claim 1, wherein a third protrusion is arranged on a contact surface of the hardware fitting and the buffer layer;
the buffer layer is provided with a third groove matched with the third bulge.
8. The hard epoxy insulator according to claim 1, wherein the buffer layer has a thickness of 2mm to 4 mm.
9. The hard epoxy insulator according to claim 1, wherein the hardware and the sheath are connected to the buffer layer by a coupling agent.
10. The hard epoxy insulator according to any one of claims 1 to 9, wherein the buffer layer is made of a vulcanized silicone rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021794113.0U CN212542061U (en) | 2020-08-25 | 2020-08-25 | Hard epoxy resin insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021794113.0U CN212542061U (en) | 2020-08-25 | 2020-08-25 | Hard epoxy resin insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212542061U true CN212542061U (en) | 2021-02-12 |
Family
ID=74529149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021794113.0U Active CN212542061U (en) | 2020-08-25 | 2020-08-25 | Hard epoxy resin insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212542061U (en) |
-
2020
- 2020-08-25 CN CN202021794113.0U patent/CN212542061U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113035424B (en) | High-strength wear-resistant high-temperature-resistant cable and using method thereof | |
| CN212542061U (en) | Hard epoxy resin insulator | |
| CN214479481U (en) | Wire hanging hardware fitting and T-shaped composite insulating cross arm with same | |
| CN218728205U (en) | High-speed pultrusion optical cable reinforced core | |
| CN111540550A (en) | Post insulator and preparation method thereof | |
| CN208570165U (en) | A kind of cracking resistance cable for power transmission | |
| CN217113992U (en) | Connecting structure between adjacent porcelain umbrella skirt external members in multi-umbrella skirt insulator composition | |
| CN101989622A (en) | Improved solar component frame structure | |
| CN213070685U (en) | Self-clamping cable | |
| CN212365624U (en) | Post insulator and power transmission tower | |
| CN207925157U (en) | A kind of anti-aging cable | |
| CN218568532U (en) | Self-cleaning type suspension porcelain composite insulator | |
| CN111998026A (en) | Vibration isolation device with rubber spring structure | |
| CN101877258A (en) | Plate-shaped suspension type bi-insulation composite insulator and medium electric adhesive thereof | |
| CN201532821U (en) | 750kV lattice composite cross-arm insulator | |
| CN219801870U (en) | Cable cold-shrink terminal that sealing performance is good | |
| CN214541649U (en) | Environment-friendly power line with reinforcing ribs | |
| CN212161351U (en) | Computer power cord with protection architecture | |
| CN214543404U (en) | Wire support | |
| CN212724861U (en) | Dual lightning protection column type electroceramic insulator | |
| CN216212484U (en) | Stranded wire with excellent corrosion resistance | |
| CN210006512U (en) | novel cables | |
| CN219642608U (en) | Silicone glass fiber sleeve | |
| CN208861705U (en) | A kind of anti-aging damping cable | |
| CN216119663U (en) | Composite flame-retardant household cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |