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Ice melting device

An ice-melting and DC-melting technology, applied in the field of rail transit, can solve the problems of inability to melt ice, prone to breakage, loss, etc., and achieve the effects of improving ice-melting efficiency, good device economy, and fast ice-melting speed.

Active Publication Date: 2017-06-13
中电博瑞技术(北京)有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This scheme must disconnect the power supply after the formation of icing phenomenon, and change the system connection scheme to form the ice-melting current path, which cannot realize anti-icing and ice-melting without affecting the normal power supply of the traction power supply system. Therefore, if this scheme is applied to The power supply system of the electrified railway will definitely affect the normal operation of the train; moreover, the use of an independent transmission line, because it is prone to breakage at extremely low temperatures, will also affect the ice-melting effect, and the ice-melting line is usually The whole line uses the same ice-melting device. When the line is damaged, it will cause the whole line to fail to melt ice, resulting in greater losses; Ice melting is usually not performed, which reduces the efficiency of ice melting across the orbit

Method used

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0023] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0024] The main principle of DC ice melting is to use the ice-coated line as a load, apply a DC power supply, and use a lower voltage to provide a DC short-circuit current to heat the wire to melt the ice on the line. Refer to attached figure 1 , is a schematic diagr...

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Abstract

The invention discloses an ice-melting device, which is used for a traction power supply system and a track. , a contact rail connecting line, a traveling rail connecting line, and a switch constitute a group of ice-melting units, which are correspondingly installed at a depot substation; each contact rail connecting line transforms the depot where it is located. The upper contact rail and the down contact rail are connected in series, and the upper contact rail and the down contact rail are also connected in series with the DC ice-melting mechanism through a switch to form a contact rail circuit unit; similarly, a walking rail circuit unit is formed; each DC ice-melting mechanism The contact rail circuit unit and the traveling rail circuit unit are switched and connected by a switch for alternate power supply; the ice-melting device for the traction power supply system and the track proposed by the present invention does not affect the normal operation of the train and is suitable for trains in operation icing treatment.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an ice melting device. Background technique [0002] In recent years, China's high-speed rail, light rail and other rail transportation industries have developed rapidly, and have become an indispensable means of transportation in people's daily life. The traction power supply system and the track will be iced under harsh ambient temperature and humidity conditions. The icing of the traction system will cause the pantograph to fail to take current normally, and in severe cases, it will cause damage or breakage of the pantograph. How to prevent or melt the icing of traction power supply system and track is a problem that electrified railway must face and solve. [0003] Currently, DC deicing is currently recognized as a mature and feasible technology. This technology usually uses a thyristor rectifier as the core converter equipment, supplemented by smoothing reactors, AC f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M1/12H02G7/16
Inventor 武守远王立天李子鸥宋宏佺李丽艳
Owner 中电博瑞技术(北京)有限公司
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