Pantograph insulator with spiral air channel

Abstract

First umbrella skirts, second umbrella skirts and third umbrella skirts are horizontally arranged on the periphery of a body of the pantograph insulator, the first umbrella skirts are arranged on the upper portion and the lower portion of the body, and the multiple second umbrella skirts are arranged between the first umbrella skirts arranged on the upper portion and the lower portion. The third umbrella skirts are arranged between the adjacent first umbrella skirts and second umbrella skirts or between the adjacent second umbrella skirts, the body, the first umbrella skirts and the second umbrella skirts are in an elliptical cone shape, long axes of the body, the first umbrella skirts and the second umbrella skirts are arranged in the advancing direction of a vehicle, short axes of the body, the first umbrella skirts and the second umbrella skirts are arranged in the width direction of the vehicle, and the third umbrella skirts are in a fan shape. The first umbrella skirts are symmetrically arranged on the two sides of the body in the width direction, and the projection gt of the first umbrella skirts on the radial plane of the body; the projection gt of the second umbrella skirt on the radial plane of the body; and the projection of the third umbrella skirt on the radial plane of the body. A rainwater path and an electrode discharge path are separated, and the insulation performance of the insulator is guaranteed.

Description

Technical Field

[0001] The invention relates to a pantograph for a high-speed train set, in particular to a pantograph insulator with a spiral air channel. Background Art

[0002] At present, the pantograph insulator of EMU only has the function of supporting the pantograph. As a high-speed EMU train, the pantograph must consider the influence of air resistance during operation. In the process of insulator design and selection, not only the installation of the insulator must be considered, but also the layout of the air path from the car body to the pantograph, and the influence of aerodynamics must also be considered.

[0003] Chinese patent CN114628091B discloses a pantograph support insulator, which uses an elliptical cylindrical insulating column to effectively reduce the wind resistance during high-speed operation of the EMU. At the same time, an air channel formed by an insulating tube is provided in the insulating column, realizing the built-in pantograph air duct gas path. However, since it uses an elliptical cylindrical insulating column, the sheds arranged on the insulating column have the same specifications, so that its rainwater path is the same as the discharge path of the electrode, and the insulator is prone to creepage, affecting the insulation performance. Summary of the invention

[0004] The technical problem to be solved by the present invention is that, in view of the defect that the rainwater flow direction of the existing pantograph insulator is the same as the electrode discharge path, the present invention provides a pantograph insulator with a spiral air channel which can separate the rainwater flow direction from the electrode discharge path.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A pantograph insulator with a spiral air channel comprises a body, an upper flange is installed on the top of the body, and a lower flange is installed on the bottom. The structural feature of the insulator is that a first shed, a second shed and a third shed are horizontally arranged on the outer circumference of the body, the first shed is arranged at the upper and lower parts of the body, a plurality of the second sheds are arranged between the first sheds arranged at the upper and lower parts, the third shed is arranged between adjacent first sheds and second sheds, or between adjacent second sheds, and the body, the first shed and the second shed are in an elliptical cone shape, the major axis of the body, the first shed and the second shed are arranged along the forward direction of the vehicle, and the minor axis is arranged along the width direction of the vehicle, the third shed is in a fan shape and is symmetrically arranged on both sides in the width direction of the body, the projection of the first shed on the radial plane of the body completely covers the projection of the second shed on the radial plane of the body, and the projection of the second shed on the radial plane of the body completely covers the projection of the third shed on the radial plane of the body.

[0007] The present invention designs the body shape of the insulator to be an elliptical cone, and arranges the first umbrella skirt, the second umbrella skirt and the third umbrella skirt of different specifications on the periphery of the body, and the first umbrella skirt with the largest specification size is arranged at the upper and lower parts of the body, and the plurality of the second umbrella skirts with smaller specifications size are arranged between the first umbrella skirts arranged at the upper and lower parts, and the third umbrella skirt with the smallest specification size is arranged between the adjacent first umbrella skirts and the second umbrella skirts, or between the adjacent second umbrella skirts, and the third umbrella skirts are fan-shaped and are arranged symmetrically on both sides only in the width direction of the body, so that the projection of the first umbrella skirt on the radial plane of the body>the projection of the second umbrella skirt on the radial plane of the body>the projection of the third umbrella skirt on the radial plane of the body, when it rains, rainwater will fall directly from the upper first umbrella skirt through the lower first umbrella skirt, that is, the first umbrella skirt effectively protects the second umbrella skirt and the third umbrella skirt from being directly affected by rainwater during operation, and separates the flow direction of rainwater from the electrode discharge path.

[0008] It should be noted that the electrode discharge path, that is, the overall creepage distance of the insulator, is from the charged point on the top of the body to the first shed at the top, and then passes through multiple second sheds, the third shed, and the first shed distributed downward along the outer contour of the body, to the bottom of the body.

[0009] Preferably, an air duct is arranged inside the body, an air outlet is arranged on the upper flange, an air inlet is arranged on the lower flange, one end of the air duct is connected to the air outlet, and the other end is connected to the air inlet. In this way, the present invention embeds the air duct exposed on the top of the car body into the insulator, thereby ensuring the reliability of the air path of the high-speed train.

[0010] Preferably, the air outlet and the air inlet are respectively configured as quick-plug interfaces to facilitate quick plug-in.

[0011] Preferably, the air channel is in an elliptical conical spiral shape as a whole to ensure the internal creepage distance of the insulator.

[0012] Preferably, the interior of the body is configured as a cavity, and the air channel is arranged in the cavity. The cavity is configured inside the body to meet the overall weight reduction requirements of the insulator.

[0013] Preferably, the air channel is bent in a continuous U-shape and extends along the axis of the body to ensure the internal creepage distance of the insulator.

[0014] Preferably, an airway cavity is integrally formed in the body, and the airway is arranged in the airway cavity.

[0015] Preferably, the air duct is made of insulating nylon material to meet the strength and bending resistance requirements.

[0016] Preferably, a cavity is provided inside the body, and a pressure relief port is provided on the cavity to relieve pressure when the pressure inside the cavity is too high, thereby ensuring safe use of the insulator.

[0017] Preferably, the pressure relief port is sealed with silicone rubber material.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The first shed of the present invention effectively protects the second shed and the third shed from being directly affected by rainwater during operation, separates the flow direction of rainwater from the electrode discharge path, and ensures the insulation performance of the insulator.

[0020] 2. The present invention not only realizes the stable support of the pantograph on the train, but also provides the pantograph control airway connection.

[0021] 3. The main body, the first umbrella skirt and the second umbrella skirt of the present invention adopt an elliptical cone structure, and the long axes of the main body, the first umbrella skirt and the second umbrella skirt are arranged along the forward direction of the vehicle, and the short axes are arranged along the width direction of the vehicle, which effectively reduces the influence of air resistance on the train and insulators when the vehicle is running.

[0022] 4. The insulator of the present invention is made of composite materials and has an overall streamlined shape, which not only meets the strength and bending resistance requirements of the insulator, but also reduces air resistance while ensuring electrical clearance and insulation distance, ensures stable support of the pantograph, and improves the hydrophobicity of the insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a front view of the first embodiment of the pantograph insulator with spiral air channel of the present invention.

[0025] Figure 2 It is a top view of the first embodiment of the pantograph insulator with spiral air channel of the present invention.

[0026] Figure 3 It is a bottom view of the first embodiment of the pantograph insulator with spiral air channel of the present invention.

[0027] Figure 4 It is a cross-sectional view of the first embodiment of the pantograph insulator with a spiral air channel of the present invention when installed along the traveling direction of the vehicle.

[0028] Figure 5 It is a cross-sectional view along the vehicle width direction of the first embodiment of the pantograph insulator with spiral air channel of the present invention when installed.

[0029] Figure 6 This is a main diagram of the first embodiment of the pantograph insulator with spiral air channel of the present invention.

[0030] Figure 7 It is a schematic diagram of the external electrical gap of the first embodiment of the pantograph insulator with spiral air channel of the present invention.

[0031] Figure 8 It is a schematic diagram of the external creepage distance of the first embodiment of the pantograph insulator with spiral air channel of the present invention.

[0032] Fig. 9 It is a cross-sectional view of the second embodiment of the pantograph insulator with a spiral air channel of the present invention when installed along the traveling direction of the vehicle.

[0033] Fig.10 It is a cross-sectional view along the vehicle width direction of the second embodiment of the pantograph insulator with spiral air channel of the present invention when installed.

[0034] In the figure:

[0035] 101-lower flange; 102-upper flange; 2-main body; 201-first umbrella skirt; 202-second umbrella skirt; 203-third umbrella skirt; 204-cavity; 205-pressure relief port; 301-air outlet; 302-air duct; 303-air inlet; 304-air duct cavity; 4-pantograph connection interface; 5-body connection interface; 6-base. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figure 1 - Figure 6 The first embodiment of the pantograph insulator with a spiral air duct of the present invention includes a lower flange 101; an upper flange 102; a body 2; a first umbrella skirt 201; a second umbrella skirt 202; a third umbrella skirt 203; an air outlet 301; an air duct 302; an air inlet 303; a pantograph connection interface 4; a vehicle body connection interface 5; and a base 6.

[0040] The upper flange 102 is installed on the top of the body 2, the base 6 is installed on the bottom, and the lower flange 101 is installed on the base 6. The upper flange 102 is provided with an air outlet 301 and a pantograph connection interface 4. The lower flange 101 is provided with an air inlet 303 and a vehicle body connection interface 5. The air outlet 301 and the air inlet 303 are respectively provided as quick-plug interfaces to facilitate quick installation and disassembly.

[0041] The outer periphery of the body 2 is horizontally provided with a first shed 201, a second shed 202 and a third shed 203. The first shed 201 is arranged at the upper and lower parts of the body 2 to ensure the electrical clearance of the insulator as a whole. A plurality of the second sheds 202 are arranged between the first sheds 201 arranged at the upper and lower parts, and the third shed 203 is arranged between the adjacent first sheds 201 and the second shed 202, or between the adjacent second sheds 202, so as to ensure the creepage distance of the insulator through the cooperation of the first shed 201, the second shed 202 and the third shed 203. The body 2, the first shed 201 and the second shed 202 are respectively in the shape of an elliptical cone, and the major axis of the body 2, the first shed 201 and the second shed 202 is arranged along the forward direction of the vehicle, and the minor axis is arranged along the width direction of the vehicle, so as to effectively reduce the positive contact area (windward area) between the insulator and the air during the operation of the vehicle, and reduce the resistance of the insulator to the air. The third sheds 203 are fan-shaped and symmetrically arranged on both sides of the width direction of the body. The projection of the first shed 201 on the radial plane of the body completely covers the projection of the second shed 202 on the radial plane of the body, and the projection of the second shed 202 on the radial plane of the body completely covers the projection of the third shed 203 on the radial plane of the body.

[0042] The body 2 is integrally formed by epoxy resin material.

[0043] The interior of the body 2 is configured as a cavity 204 to effectively reduce the weight of the insulator while ensuring the installation and operation space of the air channel 302. The air channel 302 is arranged in the cavity 204, one end of the air channel 302 is connected to the air outlet 301, and the other end is connected to the air inlet 303 to provide a pantograph control air channel.

[0044] The air channel 302 is in an elliptical conical spiral shape as a whole to ensure the internal creepage distance of the insulator.

[0045] The air channel 302 is molded together with the insulator body 2. The air channel 302 uses a PA hose and is fixed to the body 2 by a pipe clamp to facilitate inspection and maintenance.

[0046] The use of the present invention can provide pantograph control air path connection while realizing stable support of the pantograph on the train, and solve the air resistance effect on the insulator through the elliptical cone shape. The length of the air duct 302 is set to be greater than 1100m, which meets the requirements of air gap and creepage distance under the premise of smooth gas flow. The lower flange 101 and the upper flange 102 adopt an elliptical structure, and the lower flange 101 and the upper flange 102 adopt an elliptical cone shape to configure the first and second sheds, which reduces the windward area of ​​the insulator in the driving direction and reduces the air resistance.

[0047] When the present invention is used, the distribution of the first shed is mainly to ensure the overall electrical clearance of the insulator, such as Figure 7 As shown in FIG. 1 , the overall electrical clearance of the present invention is from the top charged point of the body 2 to the first shed at the top, and then directly through the first shed at the bottom to the base 6. The distribution of the first, second and third sheds is mainly to ensure the overall creepage distance of the insulator. Figure 8 As shown, the charged point at the top of the body 2 flows along the surface of the body to the first umbrella skirt at the top, and then sequentially passes through the third umbrella skirts, the second umbrella skirt and the first umbrella skirt at the bottom to the base. During operation, the first umbrella skirt effectively protects the second and third umbrella skirts from being directly affected by rainwater, and controls the flow direction of rainwater (from the top of the body 2 to the first umbrella skirt at the top, and then directly falls through the first umbrella skirt at the bottom) and the discharge path of the electrode (such as Figure 7 The arrangement of the third shed can effectively make up for the creepage distance in the minor axis direction of the elliptical cone to meet the creepage requirements.

[0048] See also Fig. 9 - Fig.10The second embodiment of the pantograph insulator with a spiral air duct of the present invention is roughly the same in structure as the first embodiment, with the only difference being that: the air duct 302 is continuously U-shaped and extends along a vertical plane passing through the axis of the body 2, thereby reducing weight while ensuring the operating space for installation, and the U-shaped shape can ensure the internal creepage distance of the insulator; an air duct cavity 304 is integrally formed in the body 2, and the air duct 302 is arranged in the air duct cavity 304; the air duct is made of insulating nylon material, while ensuring insulation and strength requirements; a pressure relief port 205 is arranged at the bottom of the cavity 204, and the pressure relief port 205 adopts a circular pressure relief port structure and is sealed by a silicone rubber material. During operation, when the pressure difference in the cavity 204 is unbalanced, the pressure is relieved through the pressure relief port 205 to ensure safe operation.

[0049] The above is only a specific implementation scheme of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the art can make many possible changes and modifications to the technical scheme of the present invention by using the technical content disclosed above without departing from the scope of the technical scheme of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical scheme of the present invention should fall within the protection scope of the technical scheme of the present invention.

Claims

1. A pantograph insulator with a spiral air channel, comprising a body, an upper flange is installed on the top of the body, and a lower flange is installed on the bottom, characterized in that: A first umbrella skirt, a second umbrella skirt and a third umbrella skirt are horizontally arranged on the outer circumference of the body, the first umbrella skirt is arranged at the upper and lower parts of the body, a plurality of the second umbrella skirts are arranged between the first umbrella skirts arranged at the upper and lower parts, the third umbrella skirt is arranged between adjacent first umbrella skirts and second umbrella skirts, or between adjacent second umbrella skirts, and the body, the first umbrella skirt and the second umbrella skirt are in an elliptical cone shape, the major axes of the body, the first umbrella skirt and the second umbrella skirt are arranged along the forward direction of the vehicle, and the minor axes are arranged along the width direction of the vehicle, the third umbrella skirt is fan-shaped and is symmetrically arranged on both sides in the width direction of the body, the projection of the first umbrella skirt on the radial plane of the body completely covers the projection of the second umbrella skirt on the radial plane of the body, and the projection of the second umbrella skirt on the radial plane of the body completely covers the projection of the third umbrella skirt on the radial plane of the body.

2. The pantograph insulator with spiral air channel according to claim 1, characterized in that: An air passage is arranged inside the main body, an air outlet is arranged on the upper flange, an air inlet is arranged on the lower flange, one end of the air passage is connected to the air outlet, and the other end is connected to the air inlet.

3. The pantograph insulator with spiral air channel according to claim 2, characterized in that: The air outlet and the air inlet are respectively configured as quick-plug interfaces.

4. The pantograph insulator with spiral air channel according to claim 2, characterized in that: The airway is in an elliptical cone spiral shape as a whole.

5. The pantograph insulator with spiral air channel according to claim 2, characterized in that: The interior of the body is configured as a cavity, and the air passage is arranged in the cavity.

6. The pantograph insulator with spiral air channel according to claim 2, characterized in that: The airway is in a continuous U-shaped bend and extends along the axis of the body.

7. The pantograph insulator with spiral air channel according to claim 6, characterized in that: An airway cavity is integrally formed in the body, and the airway is arranged in the airway cavity.

8. The pantograph insulator with spiral air channel according to any one of claims 2 to 7, characterized in that: The air duct is made of insulating nylon material.

9. The pantograph insulator with spiral air channel according to claim 1, characterized in that: A cavity is arranged inside the body, and a pressure relief port is arranged on the cavity.

10. The pantograph insulator with spiral air channel according to claim 9, characterized in that: The pressure relief port is sealed with silicone rubber material.

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