An electric sectioning device at a single turnout

Abstract

The present invention provides an electrical segmentation device at a single-opening turnout, which relates to the field of rail transit technology, including a turnout, a contact network, a segmentation insulator and a disconnector, wherein the turnout includes a first turnout and a second turnout, the contact network includes a first contact network and a second contact network, the segmentation insulator includes a first segmentation insulator and a second segmentation insulator, the segmentation insulator includes a slide plate and an insulating rod, the slide plate includes a long slide plate and a short slide plate, an air gap is provided between the long slide plate and the short slide plate, and an arc extinguishing angle is provided at the end, a contact network transition section is provided between the segmentation insulators, and the disconnector is provided between the contact network transition section and the contact network. The present invention provides two segmentation insulators between the first and second contact networks, and controls the relationship of the segmentation insulators in the electrical circuit through the disconnector, thereby meeting the use conditions at high altitudes.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit, and in particular to an electric segmentation device at a single turnout. Background Art

[0002] Turnouts are special track equipment that not only affect the safety of train operation, but also have a shorter service life than other equipment, and require a lot of on-site maintenance and repair work. The most commonly used single-opening turnout in my country has a straight main line and a side line that branches off to the left or right from the main line, also known as left-opening turnouts and right-opening turnouts, accounting for more than 90% of the total number of all types of turnouts.

[0003] The electric sectioning device of the overhead contact network of the electrified railway is a structure with the middle insulating rod as the main supporting force-bearing member, and the attached four metal slides as the guide rails for the locomotive pantograph to pass smoothly. The air gap formed by the insulating rod and the slide rail is to achieve the purpose of electrical isolation of the live parts at both ends of the section insulator. With the increase of altitude, both the air gap and the creepage distance of the insulating rod must be corrected and increased to meet the requirements of electrical insulation of the system. This will increase the risk of pantograph hitting when the locomotive passes; increase manufacturing and procurement costs, and increase the workload of operation and maintenance.

[0004] Therefore, designing an electric segmentation device at a single turnout to solve the above problems has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an electric segmentation device for a single turnout.

[0006] The present invention is realized through the following technical scheme: an electric segmentation device at a single-opening turnout, characterized in that it includes a turnout, a contact network, a segmentation insulator and a disconnector, the turnout includes a first turnout and a second turnout, the contact network includes a first contact network located above the first turnout and a second contact network located above the second turnout, the segmentation insulator includes a first segmentation insulator and a second segmentation insulator, the first and second segmentation insulators include a slide plate and an insulating rod, the slide plate includes a pair of long slide plates and a pair of short slide plates staggered on both sides of the insulating rod, an air gap is provided between the long slide plate and the short slide plate, and an arc extinguishing angle is provided at the end, a contact network transition section for connecting the two segmentation insulators is provided between the first and second segmentation insulators, the left end of the first segmentation insulator is connected to the first contact network, the right end of the second segmentation insulator is connected to the second contact network, and the disconnector is provided between the contact network transition section and the contact network.

[0007] According to the above technical solution, preferably, the first and second turnouts and the disconnector are all electrically connected.

[0008] According to the above technical solution, preferably, the first and second segment insulators have an air gap of 300 mm and a creepage distance of 1600 mm.

[0009] According to the above technical solution, preferably, the insulating rod includes a rod core and an insulating layer wrapped around the rod core, the rod core is a glass fiber rod core, and the insulating layer is a polytetrafluoroethylene insulating layer.

[0010] The beneficial effect of the present invention is that two segmented insulators are arranged between the first and second contact networks and the relationship of the segmented insulators in the electrical circuit is controlled by an isolating switch, thereby satisfying the use conditions at high altitudes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the main structure according to an embodiment of the present invention is shown.

[0012] In the figure: 1. disconnector; 2. first turnout; 3. second turnout; 4. first contact network; 5. second contact network; 6. first segment insulator; 7. second segment insulator; 8. insulating rod; 9. long slide; 10. short slide; 11. air gap; 12. arc extinguishing angle; 13. contact network transition section; 14. rod core; 15. insulating layer. DETAILED DESCRIPTION

[0013] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiments.

[0014] As shown in the figure, the present invention provides an electric segmentation device at a single-opening turnout, characterized in that it includes a turnout, a contact network, a segmentation insulator and a disconnector 1, the turnout includes a first turnout 2 and a second turnout 3, the contact network includes a first contact network 4 located above the first turnout 2 and a second contact network 5 located above the second turnout 3, the segmentation insulator includes a first segmentation insulator 6 and a second segmentation insulator 7, the first and second segmentation insulators include a slide plate and an insulating rod 8, the slide plate includes a pair of long slide plates 9 and a pair of short slide plates 10 staggered on both sides of the insulating rod, an air gap 11 is provided between the long slide plates 9 and the short slide plates 10, and an arc extinguishing angle 12 is provided at the end, a contact network transition section 13 for connecting the two segmentation insulators is provided between the first and second segmentation insulators, the left end of the first segmentation insulator 6 is connected to the first contact network 4, the right end of the second segmentation insulator 7 is connected to the second contact network 5, and the disconnector 1 is arranged between the contact network transition section 13 and the contact network.

[0015] According to the above embodiment, preferably, the first and second turnouts and the disconnector 1 are all electrically connected to ensure convenience and efficiency in use.

[0016] According to the above embodiment, preferably, the first and second segment insulators have an air gap of 300 mm and a creepage distance of 1600 mm.

[0017] According to the above embodiment, preferably, the insulating rod 8 includes a rod core 14 and an insulating layer 15 wrapped around the rod core, the rod core 14 is a glass fiber rod core, and the insulating layer 15 is a polytetrafluoroethylene insulating layer, thereby ensuring the insulation effect of the segmented insulator.

[0018] The working principle of the present invention is as follows: two segmented insulators are arranged between the first and second contact networks, and an isolating switch is arranged between the contact network transition section connecting the segmented insulators and the contact network. When carrying out inspection and maintenance, the isolating switch is opened, and the insulating rods and the air gap on the first and second segmented insulators are connected in series in the electrical circuit, thereby increasing the air gap and the creepage distance to ensure that they meet the conditions for high-altitude operations.

[0019] The beneficial effects of the present invention are as follows: the present invention arranges two segmented insulators between the first and second contact networks and controls the relationship of the segmented insulators in the electrical circuit through an isolating switch, thereby meeting the use conditions at high altitudes.

[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An electrical sectioning device at a single turnout, characterized in that: The invention comprises a turnout, a contact network, a segmented insulator and a disconnector, wherein the turnout comprises a first turnout and a second turnout, the contact network comprises a first contact network located above the first turnout and a second contact network located above the second turnout, the segmented insulator comprises a first segmented insulator and a second segmented insulator, the first and second segmented insulators comprise a slide plate and an insulating rod, the slide plate comprises a pair of long slide plates and a pair of short slide plates staggered on both sides of the insulating rod, an air gap is provided between the long slide plate and the short slide plate, and arc extinguishing angles are provided at the ends, a contact network transition section for connecting the two segmented insulators is provided between the first and second segmented insulators, the left end of the first segmented insulator is connected to the first contact network, the right end of the second segmented insulator is connected to the second contact network, and the disconnector is provided between the contact network transition section and the contact network.

2. The electric segmentation device at a single turnout according to claim 1, characterized in that: The first and second turnouts and the isolating switch are all electrically connected.

3. The electric segmentation device at a single turnout according to claim 1, characterized in that: The air gap between the first segment insulator and the second segment insulator is 300 mm, and the creepage distance between the first segment insulator and the second segment insulator is 1600 mm.

4. The electric segmentation device at a single turnout according to claim 1, characterized in that: The insulating rod comprises a rod core and an insulating layer wrapped around the rod core, the rod core is a glass fiber rod core, and the insulating layer is a polytetrafluoroethylene insulating layer.

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