CN215298970U - Insulation system for electric locomotive - Google Patents
Insulation system for electric locomotive Download PDFInfo
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- CN215298970U CN215298970U CN202121746921.4U CN202121746921U CN215298970U CN 215298970 U CN215298970 U CN 215298970U CN 202121746921 U CN202121746921 U CN 202121746921U CN 215298970 U CN215298970 U CN 215298970U
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- metal top
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- insulating
- electric locomotive
- top cap
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Abstract
The utility model discloses an insulation system for electric locomotive, including the metal top cap, be provided with a plurality of high-voltage apparatus on the metal top cap, high-voltage apparatus all is connected with the metal top cap through the installation base, and the installation area of high-voltage apparatus and high-voltage apparatus's surface all is provided with insulating protective coating on the metal top cap, and insulating protective coating is formed by the antifouling sudden strain of a muscle coating solidification of normal atmospheric temperature solidification silicon rubber, all is provided with insulating sheath on each installation base, and insulating sheath passes through gluing agent layer and bonds with the metal top cap, and high-voltage apparatus's connecting wire all is provided with insulation support. The utility model provides an insulating system for electric locomotive, through setting up insulating protective coating, insulating sheath and insulation support, effectively improved the insulating properties between metal top cap and high-tension apparatus for electric locomotive can be long-term under the outdoor complex environment safe and long-term operation.
Description
Technical Field
The utility model belongs to the technical field of rail train body construction, concretely relates to an insulation system for electric locomotive.
Background
At present, in the design of rail transit vehicles, all materials used for the top cover of the electric locomotive are metal materials and are not insulated. A plurality of high-voltage electrical appliances are arranged on a top cover of the electric locomotive, the electrical appliances mainly refer to some electrical appliances working in an environment of 25kV high voltage electricity, the electrical appliances are mainly embodied in a primary side part of a main circuit in the circuit, and the electrical appliances comprise a pantograph, a main circuit breaker, a high-voltage sleeve, a high-voltage transformer, a lightning arrester, a high-voltage connector, a high-voltage isolating switch and other main electrical appliances. In general, according to the distance between the existing top cover and the high-voltage electrical appliance, the insulator on the high-voltage electrical appliance can meet the insulation requirement. However, the high-voltage electrical equipment on the top cover of the electric locomotive is exposed to outdoor complex environment for a long time and is easily attacked by severe weather such as rain, snow, wind, sand, fog, ice and the like, so that the insulation between the high-voltage electrical equipment and the roof is reduced, and faults such as flashover, short circuit and the like occur, and the normal operation of the locomotive is influenced.
In this case, it is generally adopted to increase the insulation distance between the high-voltage apparatus and the top cover. However, due to the limitation of the limit of the rolling stock, the method is to compress the distance between the top cover and the rail surface or to improve the high-voltage electric appliance. In some cases, however, the space in the vehicle body is reduced due to the distance between the compression top cover and the rail surface, the clearance of the door frame does not meet the relevant standard requirement, or other factors (such as ventilation of the vehicle and the like) influencing the operation of the vehicle occur; the improved high-voltage electrical appliance cannot increase the insulation distance under the existing technical conditions.
Patent No. 202010586457.0 discloses a method for reinforcing insulation of a roof of a harmonious electric locomotive, which comprises the following steps: s1: cleaning and cleaning the paint and the old coating on the car roof; s2: spraying insulating paint on the roof: s3: carrying out insulation reinforcement on the vacuum main circuit breaker; s4: insulating sheaths are additionally arranged at the top and the bottom of the high-voltage electrical appliance on the roof; s5: and the high-voltage circuit connecting wire on the car roof is insulated and protected by adopting a heat-shrinkable high-voltage bushing. The harmonious electric locomotive roof insulation strengthening method provided by the invention can integrate all parts of the locomotive roof and high-voltage electric appliance parts in the locomotive into a whole for insulation protection, and protect all high-voltage electric appliance parts in the locomotive according to protection categories, thereby achieving good insulation effect of insulation protection covering as full as possible. However, the full-coverage insulation protection in the patent has many processes, which leads to a complicated structure and is very inconvenient in the actual use process.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model aims to provide an insulating system for electric locomotive aims at solving the insulating protection system structure complicacy of current electric locomotive roof, the inconvenient technical problem of construction.
The utility model aims at realizing through the following technical scheme:
the utility model provides an insulation system for electric locomotive, includes metal top cap, be provided with a plurality of high-voltage apparatus on the metal top cap, high-voltage apparatus all through the installation base with the metal top cap is connected, the installation area of high-voltage apparatus on the metal top cap and high-voltage apparatus's surface all are provided with insulating protective coating, insulating protective coating is formed by the antifouling sudden strain of a muscle coating solidification of normal atmospheric temperature solidification silicon rubber, each all be provided with insulating sheath on the installation base, insulating sheath passes through gluing agent layer and bonds with the metal top cap, high-voltage apparatus's connecting wire all is provided with insulation support.
Preferably, a silane coupling agent layer is further arranged on the metal top cover at the mounting area of the high-voltage electric appliance and between the surface of the high-voltage electric appliance and the insulating protective coating.
Preferably, wherein the thickness of the insulating protective coating is 0.5 to 2.5mm, and the thickness of the silane coupling agent layer is 0.01 to 0.05 mm.
Preferably, the insulating sheath is made of organic silicon rubber material through one-time vulcanization molding.
Preferably, the insulating sheath is made of an organic silicon fluorine rubber material through one-time vulcanization molding.
Preferably, one side of the insulating sheath is provided with a closable opening, the edge of the opening is turned outwards to form a corresponding lock border, and the opening is sealed by a plastic rivet passing through the lock border after each mounting base is sleeved.
Preferably, a gap between the insulating sheath and the mounting base is filled with a plugging rubber covering the mounting base, and the plugging rubber is made of a soft plastic material capable of being kneaded into any shape.
Preferably, wherein the insulating sleeve is composed of a silicone rubber material.
Preferably, the high-voltage electrical apparatus comprises a main circuit breaker, a high-voltage current transformer, a high-voltage transformer, a lightning arrester, a high-voltage connector and a high-voltage isolating switch.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model provides an insulation system for electric locomotive, including the metal top cap, be provided with a plurality of high-voltage apparatus on the metal top cap, high-voltage apparatus all is connected with the metal top cap through the installation base, the installation area of high-voltage apparatus and high-voltage apparatus's surface all is provided with insulating protective coating on the metal top cap, insulating protective coating is formed by the antifouling sudden strain of a muscle coating solidification of normal atmospheric temperature solidification silicon rubber, all be provided with insulating sheath on each installation base, insulating sheath passes through gluing agent layer and bonds with the metal top cap, high-voltage apparatus's connecting wire all is provided with insulation support. This application all sets up insulating protective coating through the surface of the installation region of high-voltage apparatus on metal top cap and high-voltage apparatus, all is provided with insulating sheath on each installation base to and be provided with insulation support on high-voltage apparatus's connecting wire, effectively improved the insulating properties between metal top cap and high-voltage apparatus, make electric locomotive can be in can be under outdoor complex environment safe and long-term operation for a long time.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the insulation system provided by the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a high-voltage electrical apparatus in an insulation system provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
The description in this application as relating to "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Example 1
As shown in fig. 1, an insulation system for an electric locomotive comprises a metal top cover 1, wherein a plurality of high-voltage electrical appliances 2 are arranged on the metal top cover 1, and each high-voltage electrical appliance 2 comprises a main circuit breaker, a high-voltage current transformer, a high-voltage transformer, a lightning arrester, a high-voltage connector, a high-voltage isolating switch and the like. The high-voltage electric appliance 1 is connected with the metal top cover 1 through the mounting base 3, the mounting area of the high-voltage electric appliance 2 on the metal top cover 1 and the surface of the high-voltage electric appliance 2 are provided with the insulating protective coating 4, the insulating protective coating is formed by curing normal-temperature curing silicone rubber anti-pollution flashover coating, because the normal-temperature curing silicone rubber anti-pollution flashover coating can be directly coated on the mounting area of the high-voltage electric appliance on the metal top cover to be treated and the surface of the high-voltage electric appliance, according to the actual use requirement, the parts with different thickness requirements can be coated with the normal-temperature curing silicone rubber anti-pollution flashover coating with different viscosities, the construction is rapid, the high-voltage electric appliance is not only suitable for newly-built electric locomotives, but also suitable for the electric locomotives after being put into use to be treated, and is convenient and practical; the coating can be cured within 15-30 minutes to form an insulating coating, the insulating property of the coating can reach 25-30kV/mm, and the insulating properties of the metal top cover and the surface of a high-voltage electrical appliance are effectively ensured; through setting up insulating sheath 5 on each installation base 3 again, this insulating sheath 5 bonds with metal top cap 1 through gluing agent layer (not shown in the figure), and set up insulation support 6 on high-voltage apparatus 2's connecting wire 7, make metal top cap 1, high-voltage apparatus 2 and metal top cap 1's junction, high-voltage apparatus 2 has carried out the insulating protection of full coverage with connecting wire 7 and has handled, the insulating protection performance of this electric locomotive has been improved, the flashover that leads to because insulating reduction between high-voltage apparatus and the metal top cap has significantly reduced, trouble such as short circuit.
Preferably, in a preferred embodiment of the present invention, as shown in fig. 2, a silane coupling agent layer 9 is further disposed on the metal top cover 1 at the installation area of the high-voltage electric device 2 and between the surface of the high-voltage electric device and the insulating protective coating, and the silane coupling agent layer 9 is formed by coating a silane coupling agent (which is commercially available), such as KH-550, KH-560, on the upper surface of the metal top cover, so as to form a better coupling between the metal top cover and the insulating protective coating due to the bridging effect of the silane coupling agent, and further improve the adhesion and the service life of the metal top cover, compared with a metal top cover without the silane coupling agent layer, the service life of the metal top cover can be prolonged by 1-3 years under the same service conditions.
Preferably, in another preferred technical scheme of the embodiment, due to the comprehensive consideration of construction cost, performance requirements and influence on vehicles, the thickness of the insulating protective coating 4 is 0.5-2.5mm, and the thickness of the silane coupling agent layer 9 is 0.01-0.05mm, so that the arrangement provides technical support for further prolonging the service life of the insulating structure.
Preferably, in another preferred technical scheme of this embodiment, wherein insulating sleeve 6 comprises silicone rubber material, one side of this insulating sleeve 6 is provided with the opening, and its cross section is "6" font, and the medial surface at this insulating sleeve 6 opening both ends all is provided with self-adhesion bonding glue, and during the concrete use, with this insulating sleeve suit on the connecting wire, then bond each other through the self-adhesion bonding glue that sets up at insulating sheath both ends back, seal cover dress on the connecting wire, convenient and practical.
Example 2
On the basis of the embodiment 1, the insulating sheath 5 is formed by vulcanizing and molding the organic silicon rubber material at one time. The organic silicon rubber material is prepared by taking silicon rubber as a base material and adding substances such as flame retardance, electric arc resistance, reinforcement, heat conduction materials and the like for physical mixing; in the product design process, the functions of insulation, flame retardance, heat conductivity, high and low temperature alternating resistance, aging resistance and the like of the material are modulated in a targeted manner; therefore, the insulating sheath prepared from the organic silicon rubber material has good insulating property and mechanical property, and has flame retardant property and heat conducting propertyAlso has excellent insulating property up to 25-30kV/mm, and volume resistivity not less than 3.0 × 1012The tensile strength is greater than 7.5Mpa, the tear strength is greater than 30kN/m, the elongation at break is not less than 600%, the flame retardant property is FV-0 level, the heat conductivity is 0.8W/m & lt k & gt, and the metal corrosivity is 0 level; in addition, the insulating sheath has excellent hydrophobic moisture resistance and weather resistance, and the service life of the insulating sheath can reach 15 years when the insulating sheath is used outdoors;
preferably, in a preferred technical solution of this embodiment, since the insulating sheath made of the silicone rubber material has high and low temperature resistance, corrosion resistance, and radiation resistance, and has excellent electric insulation, water resistance, weather resistance and the like, but because the organic silicon rubber material is used, the surface of the insulating protective coating is easy to be deposited with dust, so that the insulating performance of the top cover of the motor vehicle assembly is easy to be reduced due to the dust deposition, therefore, the organic silicon fluorine rubber material is adopted as the base material of the insulating sheath by the applicant, the insulating sheath prepared from the organic silicon fluorine rubber material not only has the excellent characteristics of the organic silicon rubber material, but also has the advantages that the surface of the insulating sheath is not easy to be stained with dust, thereby further improving the insulating property and the service life of the electric locomotive, and the service life of the electric locomotive can reach 20 to 25 years.
Example 3
Preferably, on the basis of embodiment 1 and/or embodiment 2, one side of the insulating sheath 5 is provided with a closable opening, the edge of which is turned outwards to form a corresponding catch, and the opening can be sealed closed by a plastic rivet passing through the catch after the respective mounting base is nested. When the insulating sheath is used specifically, the insulating sheath is sleeved on the installation base, then the plastic rivet penetrates through the serging to seal the insulating sheath in a closed mode, installation and disassembly are facilitated, and technical support is provided for improving the convenience and practicability of the insulating sheath.
Preferably, in a preferred technical solution of the present embodiment, a gap between the insulating sheath 5 and the mounting base 3 is filled with a sealing rubber 8 covering the mounting base, and the sealing rubber is made of a soft plastic material capable of being kneaded into any shape. The plugging rubber in the application is a self-leveling plugging material, can be purchased and can also be prepared according to the prior art: the self-leveling plugging material can be selected from the following materials: the applicant is: the self-leveling insulating moisture-proof plugging agent disclosed by Beijing Chenghui and Longsheng engineering technology Limited, China patent with application number of 201910464160.4, has low viscosity, good fluidity and leveling property, excellent flame retardance, electrical property and bonding strength after the mixture is cured at room temperature, and moisture-proof and shock-proof effects, and can well meet the requirements of practical application. The arrangement of the plugging glue can completely plug and seal a gap between the insulating sheath and the mounting base, can effectively prevent water vapor, moisture, mist and the like from entering the mounting base, and provides technical support for safe and reliable operation of the electric locomotive.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides an insulation system for electric locomotive, its characterized in that, includes metal top cap, be provided with a plurality of high-voltage apparatus on the metal top cap, high-voltage apparatus all through the installation base with metal top cap is connected, the installation area of high-voltage apparatus on the metal top cap and high-voltage apparatus's surface all are provided with insulating protective coating, insulating protective coating is formed by the antifouling sudden strain of a muscle coating solidification of normal atmospheric temperature solidification silicon rubber, each all be provided with insulating sheath on the installation base, insulating sheath passes through gluing agent layer and bonds with metal top cap, high-voltage apparatus's connecting wire all is provided with insulation support.
2. The insulation system for electric locomotive according to claim 1, wherein a silane coupling agent layer is further provided on said metal top cover between the installation area of the high voltage electric appliance, the surface of the high voltage electric appliance and the insulation protective coating.
3. The insulation system for an electric locomotive according to claim 2, wherein the thickness of the insulating protective coating is 0.5-2.5mm, and the thickness of the silane coupling agent layer is 0.01-0.05 mm.
4. The insulation system for an electric locomotive according to claim 3, wherein the insulation sheath is formed of a silicone rubber material by one-time vulcanization molding.
5. The insulation system for electric locomotives according to claim 3, wherein said insulation sheath is formed by one-shot vulcanization molding of a silicone-fluorine rubber material.
6. Insulation system for an electric locomotive according to claim 4 or 5, characterized in that a side of the insulation sheath is provided with closable openings, the edges of which are turned out to form corresponding lockstitches, which are closed and sealed by plastic rivets passing through the lockstitches after sheathing the respective mounting bases.
7. The insulation system for electric locomotive according to claim 3, wherein the gap between said insulation sheath and said mounting base is filled with a sealing rubber covering said mounting base, said sealing rubber is made of a soft plastic material capable of being kneaded into any shape.
8. The insulation system for an electric locomotive according to claim 1, wherein the insulation sleeve is constructed of a silicone rubber material.
9. The insulation system for an electric locomotive according to claim 1, wherein the high voltage electrical appliance comprises a main circuit breaker, a high voltage bushing, a high voltage potential transformer, a lightning arrester, a high voltage connector and a high voltage disconnector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121746921.4U CN215298970U (en) | 2021-07-29 | 2021-07-29 | Insulation system for electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121746921.4U CN215298970U (en) | 2021-07-29 | 2021-07-29 | Insulation system for electric locomotive |
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| Publication Number | Publication Date |
|---|---|
| CN215298970U true CN215298970U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121746921.4U Active CN215298970U (en) | 2021-07-29 | 2021-07-29 | Insulation system for electric locomotive |
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| Country | Link |
|---|---|
| CN (1) | CN215298970U (en) |
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2021
- 2021-07-29 CN CN202121746921.4U patent/CN215298970U/en active Active
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