Method and device for protecting locomotive air channel relay
A technology of relays and air ducts, which is applied in the field of protection of electric locomotive ventilation and cooling system data acquisition wind pressure threshold type electronic protection relays, achieving the effects of durability, good shock resistance, avoiding interference, and adjustable sensitivity
Active Publication Date: 2010-05-12
株洲天利铁路机车车辆配件有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to address the deficiencies of existing locomotive air duct relays in terms of failure prevention, rain, snow and freezing, etc., and propose a wind pressure data acquisition air duct relay for electric locomotive ventilation and cooling systems that has less mechanical failures and is resistant to wind, sand, rain, snow and freezing Protection methods and devices
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[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0012] by attaching figure 1 It can be seen that the present invention relates to a data acquisition and protection method for air duct relays in the ventilation and cooling system of electric locomotives, which still adopts the static pressure induction type, and is characterized in that the air duct air pressure sensing sensitive elements are spatially isolated from the air duct induction medium, The wind pressure is introduced to the wind pressure sensing sensitive element by using the anti-blocking diversion maze method to realize the wind pressure data acquisition air duct relay protection method of the ventilation and cooling system. The air duct wind pressure sensing sensitive element and the air duct sensing medium are implemented Space isolation refers to setting the wind pressure sensitive element in a relatively airtight container, setting th...
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The invention discloses a method and a device for protecting a locomotive air channel relay. The method comprises the following steps: still adopting a static pressure induction mode, conducting spatial separation on an air-channel air-pressure induction sensing element and air channel induction medium, adopting anti-blocking diversion labyrinth mode to introduce the air pressure to the position of the air pressure induction sensing element, thus realizing the collection of air pressure data of an aeration cooling system. The collection of the air pressure signal of the air channel relay is realized as follows: when passing through an outer sleeve, the air pressure passing through the air channel is transmitted to the periphery of an anti-blocking diversion labyrinth type sampling sleeve, then transmitted in a blind chamber of the anti-blocking diversion labyrinth type sampling sleeve by a sampling hole on the anti-blocking diversion labyrinth type sampling sleeve, and finally transmitted to an air pressure input port of a precise pressure-sensitive device of the air channel relay. In the invention, the labyrinth type anti-blocking design is adopted, thus effectively blocking dusts, ice and snow and other impurities, thoroughly solving the influence of wind-blown sands, ice and snow as well as freezing on the air channel relay, and guaranteeing the reliable operation of the air channel.
Description
technical field [0001] The invention belongs to the protection method and device of electric locomotive electrical auxiliary products, and in particular to a protection method and device of an electric locomotive ventilation and cooling system data acquisition wind pressure (wind speed) threshold type electronic protection relay. The wind pressure (wind speed) signal in the ventilation and cooling air duct is converted into an electric switch value and provided to the auxiliary control circuit of the electric locomotive traction device. Background technique [0002] The ventilation and cooling air duct of electric locomotive is the air-cooling and heat-dissipating channel of the main heat-generating components of the electric locomotive (traction motor, braking resistor box, main transformer, converter device and other key components of locomotive operation), which are generated in the air duct by the rotation of the cooling fan With a certain wind speed and air flow, the ci...
Claims
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Inventor 冯嘉莉左立民胡烨古志东唐勇刘微毛子妍
Owner 株洲天利铁路机车车辆配件有限公司