CN109131433B - Rapid snow removal and icing method for high-speed train bogies with heat-carrying micro-sand jetting - Google Patents

Abstract

The invention relates to a method and a system for quickly deicing hot sand jet type high-speed train bogies, which relate to the treatment of snow and ice accumulated on bogies of a train running part, are arranged below a train body and belong to a vehicle-mounted type, and can clear away the snow and ice accumulated on the running part under the train at any time.

Description

Rapid snow removal and icing method for high-speed train bogies with heat-carrying micro-sand jetting

technical field

The invention relates to the treatment technology for the icing layer on the train bogie.

Background technique

With the increasing number of high-speed EMUs operating in the severe cold regions of northern my country and other ultra-low temperature regions, when high-speed trains run in cold winter, environmental wind and snow and line snow will cause large areas of snow and ice in the train bogie area. There are serious snow and ice in the parts, which brings hidden dangers to the safe operation of high-speed trains, and also increases the cost of railway maintenance.

During the operation of high-speed trains in the winter wind and snow environment, the snowflakes generated by the train wind will enter the bogie area, and the snowflakes raised in the track section will also enter and adhere to the key components of the running part under the train. The structure of the bogie area is complex and the accumulation of Snow will not only form ice, but some locations will melt into water under the action of the bogie heating element, etc., and then freeze into ice faster, reciprocating, and finally form a larger ice layer or ice cube. Snow and ice in the corresponding position will cause squeezing movement, hindering the normal movement of various parts of the bogie, not only destroying the parts of the bogie, but also reducing its maintenance reliability. There are also such problems abroad. Therefore, the snow and ice removal of high-speed train bogies has always been the focus of domestic and foreign railway related departments.

Some deicing technologies have been studied in foreign countries, such as the technology of spraying mixed water or mixed liquid in foreign countries, and the deicing technology of using the exhaust gas from the air conditioning system. The technology of heat, melting and adhering ice and snow, my country's EMUs also use technologies such as "spraying antifreeze" with a surface similar to painting in advance, and "blowing snow removal" using vehicle-mounted compressed air. In order to more effectively alleviate the snow and icing problem of the bogie in alpine ice and snow weather and ensure the safety of the EMU, the deicing technology is still under further research.

The icing layer is relatively hard, and the water spray can only have a slight effect on the frozen surface. It needs to spray a lot of water, and as soon as the water reaches the surface of the ice, it will fall immediately. In cold climates, the excess water will lead to more ice in the orbital region.

SUMMARY OF THE INVENTION

The purpose of the invention is to find an efficient deicing method, realize direct deicing, quickly solve the problem of snow and icing on the bogie, and ensure the safety of the EMU. A method and system for freezing snow.

The technical scheme of the present invention is conceived as follows: the tiny hot sand particles with heat are sprayed into the ice layer on the train bogie, the high-speed fine sand immediately breaks the ice into a honeycomb shape, and the heat of the fine sand can directly melt the ice.

Technical solution one

A heat-carrying micro-sand jetting high-speed train bogie method for rapidly removing snow and icing is characterized in that: using heated sand grains, and using a jetting device to spray the heated sand grains into the ice layer condensed on the train bogie , make a certain depth of ice into a honeycomb shape, and use hot sand to directly melt the ice to achieve rapid snow removal. The heat-carrying micro-sand melts the ice layer by layer quickly and cleans it up quickly.

Technical solution two

Technical scheme of the present invention:

A heat-carrying micro-sand jetting type high-speed train bogie rapid snow and ice removal system, characterized in that the system includes a deicing system, a circulation system, a hanging system and a high-pressure air connection system; the deicing system includes Sand storage tank 3, heating belt 4, sand blasting connecting pipe 8, sand blasting and sand mixer 10, hose 12 and nozzle 14; the circulation system includes a sand return sand blast mixer 19, a return sand collection bucket 16, Recovered sand pipeline 6 and sand box recovered sand inlet 2; the high-pressure air connection system includes a sand blasting and sand mixer 10, a sand blasting high-pressure air connection pipe 9, a sand-returning air-sand mixer 19, and a sand-returning high-pressure air connection pipe 15; The hanging system includes a left sand storage box hanging rod 1, a right sand storage box hanging rod 7, a nozzle hanging rod 13 and a sand return collection bucket hanging rod 17; wherein,

The sand storage box 3 is provided with a sand box sand inlet 5 for adding sand grains to the sand storage box 3; the heating belt 4 is arranged on the sand storage box 3 for heating the sand grains in the sand storage box 3. The belt 4 is connected to the vehicle power supply; the sand storage box 3 is connected to the sand blasting and sand mixer 10 through the sand blasting connecting pipe 8; The nozzle is sprayed out, and the hose 12 can adjust the spray position; the sand return collection bucket 16 is used to recover the sand that is sprayed and dropped from the nozzle 14; Mixer 19; the sand-returning air-sand mixer 19 is provided with a sand-returning collection pipeline 6, and the sand-returning collection pipeline 6 returns to the sand storage box 3 through the sand recovery sand inlet 2 of the sand box; the sand blasting high-pressure air connection One end of the pipe 9 is connected to the sand blasting and sand mixer 10, and the other end is connected to the vehicle-mounted high-pressure air, which is used to provide high-pressure air for the sand blasting and sand mixer 10 to cause the micro-sand to be ejected into the nozzle 14; One end of the high-pressure air connection pipe 15 is connected to the sand-returning sand mixer 19, and the other end is connected to the vehicle-mounted high-pressure air, which is used to provide high-pressure air for the sand-returning air-sand mixer 19 to return the micro-sand to the sand storage tank 3; The left sand storage box suspension rod 1 and the right sand storage box suspension rod 7 are installed at the lower part of the train body or the bogie part to hang the sand storage box 3 below the train body; the nozzle suspension rod 13 Installed on the lower part of the train body or on the bogie to suspend the nozzle 14 at an appropriate height; the return sand collecting bucket hanger rod 17 16 Suspension is hoisted at the proper height.

The invention adopts the technology of melting the ice with heat inside the ice layer, drives the fine sand particles carrying heat into the ice layer, uses the hot sand to quickly melt the ice layer, realizes direct deicing, and quickly solves the problem of snow and icing on the bogie. Ensure the safety of the EMU. Compared to water or liquid spray techniques, it is possible to avoid large amounts of water or liquid falling and spreading between the tracks and increasing icing.

In addition, the micro-grit itself is also made of a solid lubricant that has a very good effect on rail wear reduction. Even if a small amount of micro-grit falls on the rail, it will not have a negative impact, but will have a lubricating effect.

Description of drawings

Figure 1 is an explanatory diagram of a micro-sand jetting snow and icing system;

Figure 2 is an axonometric view of the micro-sand jet snow and ice removal system.

Reference number:

Left sand storage box hanging rod 1, sand box recovery sand inlet 2, sand storage box 3, heating belt 4, sand box sand inlet 5, recovery sand pipeline 6, right sand storage box hanging rod 7, sandblasting connecting pipe 8. Sand blasting high pressure air connection pipe 9, sand blasting and sand mixer 10, valve 11, hose 12, nozzle hanger rod 13, nozzle 14, sand return high pressure air connection pipe 15, return sand collection bucket 16, return sand The collection bucket hanging rod 17, the return sand connecting pipe 18, and the sand return sand mixer 19.

Detailed ways

The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

The purpose of the present invention is to spray tiny hot sand particles with heat into the ice layer on the train bogie, and immediately make the ice into a honeycomb shape, and the heat of the hot sand directly melts the ice layer.

For the carriage of a high-speed train, the car body is located in the upper part, and the bogie is used as the running part, which is located in the lower part. Considering that there is sufficient installation space under the car, the device in this system is hung under the car body through the hanging rod. It can be hung and fixed on the appropriate part of the bogie.

As shown in Figure 1, the sand storage box 3 is used to store tiny sand particles. It is suspended by the left sand storage box hanging rod 1 and the right sand storage box hanging rod 7, and is hung and installed on the lower plate of the vehicle body. Bolted, in order to reduce the length of the hanger rod, it can also be fixed in a suitable position on the bogie. The top of the sand storage box 3 is provided with a sand box inlet 5 and a sand box recovery sand inlet 2 . New sand can be added from the sand inlet 5 of the sand box, and the sand inlet 5 of the sand box has a cover that can be lifted; the sand inlet 2 of the sand box is used for subsequent sand recovery. The heating belt 4 adopts a flexible heating belt, which is used for heating the sand storage box 3, and two or more heating belts 4 are used, which are connected to the vehicle power supply for power supply.

The sandblasting connecting pipe 8, which is connected to one end of the sand storage box 3, is located at the lower right of the sand storage box 3, and its position is staggered from the sand storage box hanging rod 7, and its connection position can refer to the other side of the sand storage box 3 in FIG. 2 Set the position of the reserved connection hole below (the reserved connection hole position on this side can be opened and plugged with a screw plug).

Since the train has its own air cylinder, it can be used directly. Therefore, the sandblasting and sand mixer 10 is connected to the high-pressure air on the vehicle through the sandblasting high-pressure air connecting pipe 9 , and is connected to the sand storage box 3 through the sandblasting connecting pipe 8 . A valve 11 is installed at the right end of the sand blasting and sand mixer 10 , a hose 12 is connected to the valve 11 , and a nozzle 14 is installed at the right end of the hose 12 . The fine sand particles are driven by high-pressure air in the sand blasting and sand mixer 10 , and flow to the nozzle 14 through the hose 12 , and the spray intensity is adjusted through the valve 11 . The hose 12 is used so that the position of the nozzle 14 can be adjusted, and the spray can be adjusted to multiple positions. The nozzle system is suspended by the nozzle hanger rod 13, hung and installed on the lower plate of the vehicle body, and can be fixed by bolts.

The micro-sand particles are made of special materials, polytetrafluoroethylene or polytetrafluoroethylene-based solid lubricants, which can act as solid lubricants with better effect.

The micro-sand can melt and freeze immediately, and the water containing the sand will flow and fall down, even if it falls on the track, it does not matter. The sand can be made of special materials, particles made of polytetrafluoroethylene or polytetrafluoroethylene-based solid lubricants, etc.

However, in order to be recycled, the system is equipped with a sand recovery device, which includes a sand return sand mixer, a return sand collection bucket 16 and a filter element, and the return sand collection bucket 16 is used to collect fine sand particles. The sand collecting bucket 16 is provided with a filter, which can filter out the ice water, leaving only fine sand particles in the bucket. The returning sand collecting bucket 16 is suspended by the hanging rod 17 of the returning sand collecting bucket. The hanger rod 17 is installed on the lower plate of the vehicle body, and can be fixed by bolts. In order to reduce the length of the hanger rod, it can also be fixed at a suitable position of the bogie.

The return sand collection bucket 16 and the return sand blast sand mixer 19 are connected by the return sand connection pipe 18. The return sand is driven by the high pressure air in the sand blast sand mixer 19 and flows to the return sand inlet of the sand box through the return sand pipe 6 2. The sand box recovered sand inlet 2 is provided with a strip-shaped plate that can be extracted, which can block the recovered sand from entering the sand storage box 3 when it is not extracted, and play a sealing role. The sand-returning high-pressure air connecting pipe 15 is connected to the vehicle-mounted high-pressure air, which is also directly quoted from the air cylinder on the train.

Claims (3)

1. The method is characterized in that heated sand grains are adopted, a spraying device is utilized to spray the heated sand grains into an ice layer aggregated on a train bogie, the ice layer is beaten into a honeycomb shape, ice can be directly melted by utilizing the heat of the sand, and snow and ice are quickly removed;

   the deicing system comprises a sand storage box (3), a heating belt (4), a sand blasting connecting pipe (8), a sand blasting air-sand mixer (10), a hose (12) and a nozzle (14);

   the circulating system comprises a sand return air-sand mixer (19), a sand return collecting hopper (16), a sand recovery pipeline (6) and a sand box sand recovery inlet (2);

   the high-pressure air connecting system comprises a sand blasting air-sand mixer (10), a sand blasting high-pressure air connecting pipe (9), a sand returning air-sand mixer (19) and a sand returning high-pressure air connecting pipe (15);

   the hanging system comprises a left sand storage box hanging rod (1), a right sand storage box hanging rod (7), a nozzle hanging rod (13) and a sand return collection hopper hanging rod (17);

   wherein,

   a sand box sand inlet (5) is arranged on the sand storage box (3) and is used for adding sand to the sand storage box (3);

   the heating belt (4) is arranged on the sand storage box (3) and used for heating sand grains in the sand storage box (3), and the heating belt (4) is connected with a vehicle-mounted power supply;

   the sand storage box (3) is connected with a sand blasting air-sand mixer (10) through a sand blasting connecting pipe (8);

   the sand blasting air-sand mixer (10) is connected with a nozzle (14) through a hose (12) to realize the outward ejection of sand grains from the nozzle; the hose (12) is used for adjusting the spraying position according to the condition;

   the sand return collecting hopper (16) is used for recovering sand-containing ice water falling after the ice layer is melted, the sand return collecting hopper (16) can filter water sand to leave sand grains, and the sand grains are connected to a sand return air-sand mixer (19) through a sand return connecting pipe (18);

   a returned sand collecting pipeline (6) is arranged on the returned sand air-sand mixer (19), and the returned sand collecting pipeline (6) returns to the sand storage box (3) through the sand box recovered sand inlet (2);

   the end of the sand blasting high-pressure air connecting pipe (9) is connected with the sand blasting air-sand mixer (10), and the other end is connected with vehicle-mounted high-pressure air for providing high-pressure air for the sand blasting air-sand mixer (10) to promote micro-sand to be sprayed out of the nozzle (14);

   the end of the sand return high-pressure air connecting pipe (15) is connected with the sand return air-sand mixer (19), and the other end is connected with vehicle-mounted high-pressure air for providing high-pressure air for the sand return air-sand mixer (19) so as to return micro sand to the sand storage box (3);

   the left sand storage box hanging rod (1) and the right sand storage box hanging rod (7) are arranged at the lower part of the train body or the position of a bogie, so that the sand storage box (3) is hung below the train body;

   the nozzle hanging rod (13) is arranged at the lower part of a train body or a bogie part so as to hang and hang the nozzle (14) at a proper height;

   the sand return collection hopper hanging rod (17) is arranged at the lower part of a train body or a bogie position so as to hang and lift the sand return collection hopper (16) at a proper height.
2. 2. The method for rapidly removing snow and ice from a bogie of a high-speed train with heat-carrying micro-sand injection as claimed in claim 1, wherein a valve (11) is installed between the sand-blasting air-sand mixer (10) and the hose (12) for controlling the amount of sand blasting.
3. 3. The method for rapidly removing snow and ice from a bogie of a high-speed train with heat-carrying fine sand injection as claimed in claim 1, wherein the sand box recovered sand inlet (2) is provided with movable slats which can be pulled out or pushed in for opening or closing the recovered sand inlet.

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