A filter for high-speed rail vehicles

Abstract

The present invention discloses a filter screen for high-speed rail vehicles, belonging to the technical field of filter screens, comprising support bars arranged at intervals, on which a plurality of corrugated filter wires are welded; the cross section of the filter wire is a triangle, and one corner of the triangle is welded to the support bar; the cross section of the support bar is a rectangle, and a protrusion matching the filter wire is arranged in the middle of the upper surface of the rectangle; the waveform of the filter screen is a sine waveform or a trapezoidal waveform. The present invention has a simple structure, low cost, and effectively realizes the automatic cleaning function, solving the problems in the prior art. In addition, the structure of the present invention also has the advantages of high strength, safety and reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of filter screens, and in particular to a filter screen for high-speed rail vehicles which is easy to install, simple in structure and has a self-cleaning function. Background Art

[0002] Routine inspections of EMUs have found that existing skirt filter meshes are often clogged, and the filtering function is weakened or lost, resulting in the weakening and loss of the ventilation and cooling function of the internal charging unit. This causes the monitoring system to automatically alarm or the transformer to fail, posing a hidden danger to driving safety. Currently, the filter mesh used in newly manufactured factory loading is similar to the screen window in the field of life. The filter mesh is easily clogged by debris, and the filtering effect is reduced or lost. The strength of the filter is not high. A slightly larger external force during the cleaning process will cause the filter to break and it is not easy to clean. Based on these phenomena, all EMU sections across the railway are looking for new high-performance, safe, reliable and easy-to-clean filters to change the current passive state.

[0003] In response to this problem, the patent number is 201821702262.2, and the patent name is: EMU skirt filter. The patent proposes a new type of filter that is easy to clean. However, it still cannot achieve the self-cleaning function. Summary of the invention

[0004] The object of the present invention is to provide a filter screen for high-speed railway vehicles to solve the problems in the prior art.

[0005] The present invention is achieved through the following technical solution: a filter screen for high-speed rail vehicles, characterized in that: it includes support bars arranged at intervals, and multiple corrugated filter wires are welded on the support bars; the cross-section of the filter wire is triangular, and one corner of the triangle is welded to the support bar; the cross-section of the support bar is rectangular, and a protrusion matching the filter wire is provided in the middle of the upper surface of the rectangle.

[0006] Furthermore: the filter wires are arranged perpendicular to the support bars and are evenly distributed along the support bars.

[0007] Furthermore: the filter screen is rectangular, and "L"-shaped sealing plates are welded on both sides of the filter screen.

[0008] Furthermore: the cross section of the filter wire is an isosceles triangle, and the vertex is welded and fixed to the support bar.

[0009] Furthermore: the material of the filter wire and / or support strip is stainless steel 304-316 series.

[0010] Furthermore: the gap between two adjacent filter threads is between 0.02-5 mm.

[0011] Further: the waveform is a sinusoidal waveform or a trapezoidal waveform.

[0012] Further: the waveform is a sinusoidal waveform and conforms to the following function:

[0013] Y=a*SinbX, where Y is the height of the filter waveform, X is the width of the filter waveform, and a and b are coefficients.

[0014] Further: a=1000 / V, b=100 / V; wherein V is the speed of the high-speed rail vehicle in kilometers per hour.

[0015] The beneficial effects of the structure of the present invention are as follows: the structure of the present invention is simple, the cost is low, the automatic cleaning function is effectively realized, and the problems in the prior art are solved. In addition, the structure of the present invention also has the advantages of high strength, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0018] Figure 3 for Figure 1 A side view structural schematic diagram of;

[0019] Figure 4 It is a schematic diagram of the working principle of the present invention.

[0020] In the figure: 1. support bar, 2. filter wire, 3. protrusion, 4. sealing plate. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1 -4 shows the structure of the present invention, a filter for high-speed railway vehicles, comprising support bars 1 arranged at intervals, on which are welded a plurality of corrugated filter wires 2; the filter wire cross-section is triangular, and one corner of the triangle is welded to the support bar; the support bar cross-section is rectangular, and a protrusion 3 matching the filter wire is provided in the middle of the upper surface of the rectangle; the protrusion is arc-shaped, triangular or trapezoidal.

[0023] Preferably, the filter wires are arranged perpendicular to the support bars and are evenly distributed along the support bars.

[0024] Preferably: the filter screen is rectangular, with two sides (specifically Figure 1An "L"-shaped sealing plate 4 is welded on the left and right sides of the filter screen to fix the filter screen on the vehicle body. Compared with the existing inverted "L"-shaped sealing plate, this sealing plate can effectively improve the fixing firmness and reduce the risk of deformation of the filter screen. Depending on the shape of the vent used to install the filter screen, the upper and lower sides are usually located inside the vent (within the thickness range). If necessary, the upper and lower sides of the filter screen can also be welded and fixed to prevent wind or impurities from entering from the upper and lower sides.

[0025] Preferably, the cross section of the filter wire is an isosceles triangle, and the vertex is fixed to the support bar by welding.

[0026] Preferably, the filter wire and / or support strip are made of stainless steel 304-316 series.

[0027] Preferably, the gap between two adjacent filter threads is between 0.02-5 mm.

[0028] Preferably, the waveform is a sinusoidal waveform or a trapezoidal waveform.

[0029] Preferably: the waveform is a sinusoidal waveform and conforms to the following function: Y=a*SinbX, wherein Y is the height of the filter waveform (i.e., the shape of the filter wire), X is the width of the filter waveform, and a and b are coefficients. Further, wherein a=1000 / V, b=100 / V, and the units of X and Y are cm; wherein V is the speed value of the high-speed rail vehicle during normal operation, i.e., kilometers per hour. For example, when the speed is 250km / h, a=4, b=0.4. The shape of this structure is related to the running speed of the vehicle. When the filter is in the shape of this embodiment, the self-cleaning effect is best.

[0030] Take the skirt board as an example to illustrate the use process of the present invention:

[0031] The structure of the present invention is installed on the lower skirt of the EMU body to ensure ventilation and heat exchange between the equipment and the outside world; the shape and size of the skirt grid filter are matched with the skirt filter slot of the target EMU, the height of the wave shape is the same as the width of the slot, and finally the skirt filter is placed in the slot.

[0032] After the installation of this structure, as the vehicle travels, foreign matters such as catkins are blocked outside, and when there are foreign matters attached or adsorbed on the outside of the filter, it will have a self-cleaning effect. The specific principle is as follows: when the vehicle travels at high speed, air will flow at high speed outside the filter to form wind. The wind flows at high speed outside the two wave crests of the wave-shaped filter, forming a low-pressure belt at the trough position, sucking out the foreign matters and forming self-cleaning; in addition, the wind will also enter from the gap of the filter on the windward side and blow out from the leeward side. Because the filter wire is an inverted triangle, the gap on the outermost side is the smallest, so it is difficult for the wind to blow foreign matters into the filter, and it is easy to blow away foreign matters attached to the outside of the filter. Moreover, the foreign matters on the outside of the windward side will also move forward and detach from the filter under the action of the wind, thereby ensuring the cleanliness of the filter. This structure has a symmetrical structure and is suitable for the forward and reverse travel of the train, that is, it has a good effect for both forward wind and reverse wind.

[0033] In addition, the structure has the advantages of simple structure, low cost and easy installation.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A filter screen for high-speed rail vehicles, characterized in that: It includes support bars arranged at intervals, and a plurality of corrugated filter wires are welded on the support bars; The cross section of the filter wire is a triangle, and one corner of the triangle is welded to the support bar; The support bar has a rectangular cross section, and a protrusion matching the filter wire is provided in the middle of the upper surface of the rectangle; The cross section of the filter wire is an isosceles triangle, and the vertex is welded and fixed to the support bar; The waveform is a sinusoidal waveform and conforms to the following function: Y=a*SinbX, where Y is the height of the filter waveform, X is the width of the filter waveform, a and b are coefficients, a=1000 / V, b=100 / V; where V is the speed of the high-speed rail vehicle in kilometers per hour.

2. The filter screen for high-speed rail vehicles according to claim 1, characterized in that: The filter wires are arranged perpendicular to the support bars and are evenly distributed along the support bars.

3. The filter screen for high-speed rail vehicles according to claim 1, characterized in that: The filter screen is rectangular, and "L"-shaped sealing plates are welded on both sides of the filter screen.

4. The filter screen for high-speed rail vehicles according to claim 1, characterized in that: The filter wire and / or support strip are made of stainless steel 304-316 series.

5. The filter screen for high-speed rail vehicles according to claim 1, characterized in that: The gap between two adjacent filter wires is between 0.02-5mm.

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