Rail car with screw air compressor and configuration method of rail car

Abstract

The invention relates to the technical field of rail cars, and discloses a rail car with a screw type air compressor and a configuration method of the rail car. The rail car comprises a power generation device, a driving device, the screw type air compressor and an air storage tank, the driving device drives the screw type air compressor to generate gas with preset air pressure; the air is stored in the air storage tank and used for providing service braking air pressure. According to the rail car, the gas with the preset air pressure is generated through the screw-type air compressor, so that a piston-type air compressor is replaced by the screw-type air compressor, braking air pressure is provided for running of the rail car through a braking loop formed by the power generation device, the driving device, the screw-type air compressor and the gas storage tank, potential safety hazards caused by the piston-type air compressor are avoided, and the service life of the rail car is prolonged. Therefore, the safety of the rail car is improved.

Description

Technical Field

[0001] This invention relates to the field of railcar technology, and more specifically to a railcar with a screw air compressor and a method for configuring the railcar. Background Technology

[0002] The railcars used in mining areas mostly utilize piston air compressors to provide braking pressure. However, piston air compressors require air tanks and have several problems, including excessive motor power, high vibration, high noise, pulsating exhaust, unstable pressure, high exhaust temperature, easy carbon buildup in lubricating oil, and potential fire and explosion hazards. As a result, the safety performance of these railcars is poor. Summary of the Invention

[0003] In view of this, the present invention provides a railcar with a screw air compressor and a method for configuring the railcar, so as to solve the technical problem of poor safety performance caused by piston air compressors.

[0004] In a first aspect, the present invention provides a railcar with a screw air compressor. The railcar includes: a power generation device, a drive device, a screw air compressor, and an air storage tank. The power generation device provides electrical energy to the drive device so that the drive device drives the screw air compressor to generate gas with a preset pressure. The gas is stored in the air storage tank and used to provide braking air pressure for the vehicle.

[0005] In conjunction with the first aspect, in one possible implementation of the first aspect, the power generation device includes: an engine, a generator, and a lithium battery, wherein the engine is used to drive the generator to generate electrical energy; the electrical energy is stored in the lithium battery.

[0006] In conjunction with the first aspect, in one possible implementation of the first aspect, the drive device includes: a DC motor and a connecting plate, wherein the output shaft of the DC motor transmits power through the connecting plate to drive the screw air compressor to generate air pressure.

[0007] In conjunction with the first aspect, in one possible implementation of the first aspect, the power generation device further includes: a charging lamp, wherein the charging lamp is mounted on the instrument panel of the railcar driver's cab for indicating the charging status of the lithium battery.

[0008] In conjunction with the first aspect, in one possible implementation of the first aspect, the railcar further includes: a left brake caliper and a right brake caliper, wherein an air tank is connected to the left brake caliper and the right brake caliper respectively.

[0009] Secondly, the present invention provides a railcar with a screw air compressor, the method comprising: determining a first power of the screw air compressor based on a preset railcar braking pressure requirement; determining a corresponding DC motor and lithium battery based on the first power; and determining the power of the engine based on the DC motor.

[0010] In conjunction with the second aspect, in one possible implementation of the second aspect, the first power of the screw air compressor is determined based on the preset railcar braking pressure requirement, including: determining the first power of the screw air compressor based on the preset railcar braking pressure requirement, the discharge volume and the total efficiency of the compressor.

[0011] In conjunction with the second aspect, in one possible implementation of the second aspect, the first power of the screw air compressor is calculated using the following formula: P =( q × p ) / (60×1000× ) in, P This indicates the first power of the screw air compressor. q This indicates engine displacement, measured in meters (m). 3 / min, p This indicates the exhaust pressure, measured in Pa, which represents the preset braking pressure requirement for the railcar. This indicates the overall efficiency of the screw air compressor.

[0012] In conjunction with the second aspect, in one possible implementation of the second aspect, determining the corresponding DC motor and lithium battery based on the first power includes: determining the second power of the corresponding DC motor based on the first power and transmission efficiency; and determining the corresponding lithium battery based on the second power and a preset ratio.

[0013] In conjunction with the second aspect, in one possible implementation of the second aspect, the second power of the DC motor is calculated using the following formula: N = a × P in, N This indicates the second power rating of the DC motor, measured in kW. a Indicates transmission efficiency.

[0014] The technical solution of this invention has the following advantages: This invention provides a railcar equipped with a screw air compressor and a method for configuring the railcar. The railcar includes a power generation unit, a drive unit, a screw air compressor, and an air storage tank. The power generation unit provides electrical energy to the drive unit, enabling the drive unit to drive the screw air compressor to generate gas with a preset pressure. The gas is stored in the air storage tank and used to provide braking pressure for the railcar. This railcar generates gas with a preset pressure using a screw air compressor, thus replacing a piston air compressor. The braking circuit formed by the power generation unit, drive unit, screw air compressor, and air storage tank provides braking pressure for the railcar, avoiding the safety hazards caused by piston air compressors and improving the safety of the railcar. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the component connections of a railcar with a screw air compressor according to an embodiment of the present invention; Figure 2 This is a schematic flowchart of a method for configuring a railcar according to an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] According to an embodiment of the present invention, a railcar embodiment with a screw air compressor is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0019] This embodiment provides a railcar equipped with a screw air compressor, such as... Figure 1 As shown, the railcar includes: a power generation unit, a drive unit, a screw air compressor, and an air tank. The power generation unit provides electrical energy to the drive unit, which in turn drives the screw air compressor to produce gas with a preset pressure; the gas is stored in an air tank and used to provide air pressure for vehicle braking.

[0020] Specifically, due to numerous safety hazards inherent in the existing railcars, upgrades are necessary to ensure normal operation in the relevant work areas. Therefore, this embodiment replaces the original solution with a screw air compressor. After the railcar's generator produces electricity, the drive unit outputs power, driving the screw air compressor to generate the starting air pressure used for the railcar's braking. The gas generated by the screw air compressor at a preset pressure is stored in an air tank. This achieves the following: Figure 1 As shown, the generator matched with the engine generates enough electricity to satisfy the energy storage of the lithium battery. The stored electricity is used to drive the DC motor. The output shaft of the DC motor controls the screw air compressor to generate pressure, i.e., gas with a preset pressure, through the connected connecting plate, to achieve the braking effect of the railcar braking system.

[0021] Specifically, the screw air compressor is reliably connected to the railcar braking system via air pipes to ensure the air sealing performance.

[0022] Specifically, the DC motor and lithium battery are connected via a wiring harness to ensure circuit stability and safety. The length and diameter of the wiring harness should be appropriate to reduce power loss and voltage drop.

[0023] This invention provides a railcar equipped with a screw air compressor and a method for configuring the railcar. The railcar includes a power generation unit, a drive unit, a screw air compressor, and an air storage tank. The power generation unit provides electrical energy to the drive unit, enabling the drive unit to drive the screw air compressor to generate gas with a preset pressure. The gas is stored in the air storage tank and used to provide braking pressure for the railcar. This railcar generates gas with a preset pressure using a screw air compressor, thus replacing a piston air compressor. The braking circuit formed by the power generation unit, drive unit, screw air compressor, and air storage tank provides braking pressure for the railcar, avoiding the safety hazards caused by piston air compressors and improving the safety of the railcar.

[0024] In one alternative embodiment, the power generation device includes: an engine, a generator, and a lithium battery, wherein, The engine is used to drive the generator to produce electrical energy; the electrical energy is stored in the lithium battery.

[0025] Specifically, such as Figure 1 As shown, the engine drives the generator to produce electrical energy, which is then transferred to the lithium battery for storage, thus providing the foundation for the subsequent operation of the DC motor.

[0026] In one alternative embodiment, the drive device includes a DC motor and a connecting plate, wherein the output shaft of the DC motor transmits power through the connecting plate to drive the screw air compressor to generate air pressure.

[0027] In one alternative embodiment, the power generation device further includes: a charging lamp, wherein... A charging light is installed on the dashboard in the driver's cab of the railcar to indicate the charging status of the lithium battery.

[0028] Specifically, such as Figure 1 As shown, the charging light installed on the dashboard of the railcar driver's cab is used to confirm the generator's power generation, that is, whether the generator is providing power to the drive unit.

[0029] In one alternative embodiment, the railcar further includes: a left brake caliper and a right brake caliper, wherein, The air tank is connected to the left brake caliper and the right brake caliper respectively.

[0030] Specifically, such as Figure 1 As shown, the air tanks are connected to the left brake caliper and the right brake caliper respectively, thereby providing braking air pressure to the left and right brakes of the railcar, ensuring reliable and stable braking pressure, and ensuring the safe operation of the railcar.

[0031] According to an embodiment of the present invention, a method for configuring a railcar is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0032] This embodiment provides a method for configuring a railcar, such as... Figure 2 As shown, the method includes the following steps: S101. Based on the preset railcar braking pressure requirements, determine the first power of the screw air compressor.

[0033] Specifically, based on the preset railcar braking pressure requirements, the first power of the screw air compressor is determined by selecting the power parameters of the screw air compressor motor according to the railcar braking pressure requirements. Specifically, the power of the screw air compressor motor is determined by using the preset railcar braking pressure requirements, exhaust volume and the total efficiency of the compressor.

[0034] S102. Based on the first power, determine the corresponding DC motor and lithium battery.

[0035] Specifically, determining the corresponding DC motor and lithium battery based on the first power means selecting a matching DC motor and lithium battery according to the power of the screw air compressor, thereby ensuring that the stored power meets the braking pressure.

[0036] S103. Determine the engine power based on the DC motor.

[0037] Specifically, determining the engine power based on the DC motor means selecting the engine as the power source for the entire system according to the DC motor's power. The engine's crankshaft pulley outputs power, driving the generator to rotate. The generator generates current by cutting magnetic induction lines through coils, providing power to the entire braking system. The generator's output voltage and current are stabilized by a voltage regulator to adapt to the power demands at different engine speeds.

[0038] This invention provides a railcar equipped with a screw air compressor and a method for configuring the railcar. The method includes: determining a first power of the screw air compressor based on a preset braking pressure requirement of the railcar; determining a corresponding DC motor and lithium battery based on the first power; and determining the power of the engine based on the DC motor. This railcar generates gas with a preset pressure using the screw air compressor, thus replacing the piston air compressor with a screw air compressor. A braking circuit consisting of a power generation device, a drive device, the screw air compressor, and an air tank provides braking pressure for the railcar's operation, avoiding the safety hazards caused by piston air compressors and improving the safety of the railcar.

[0039] In one alternative implementation, determining the first power of the screw air compressor based on a preset railcar braking pressure requirement includes: determining the first power of the screw air compressor motor based on the preset railcar braking pressure requirement, discharge volume, and total compressor efficiency.

[0040] In one alternative implementation, the first power of the screw air compressor motor is calculated using the following formula: P =( q × p ) / (60×1000× ) in, P This indicates the first power of the screw air compressor motor. q This indicates engine displacement, measured in meters (m). 3 / min, p This indicates the exhaust pressure, measured in Pa, which represents the preset braking pressure requirement for the railcar. This indicates the overall efficiency of the screw air compressor.

[0041] Specifically, the standard requires the railcar braking pressure to reach 0.73 MPa (7.3 bar), meaning the preset railcar braking pressure requirement is 0.73 MPa and the exhaust volume is 0.6 m³. 3 For example, the overall efficiency of a screw air compressor is typically selected between 0.6 and 0.8 per minute. Taking 0.7 as an example, after substituting into the formula, we get P = (438000 / 42000) ≈ 10.43 KW.

[0042] Specifically, the screw air compressor is reliably connected to the railcar braking system via air pipes to ensure the air sealing performance.

[0043] In one alternative implementation, determining the corresponding DC motor and lithium battery based on the first power includes: Based on the first power and transmission efficiency, the second power of the corresponding DC motor is determined; based on the second power and the preset ratio, the corresponding lithium battery is determined.

[0044] In one alternative implementation, the second power of the DC motor is calculated using the following formula: N = a × P in, N This indicates the second power rating of the DC motor, measured in kW. a Indicates transmission efficiency.

[0045] Specifically, a Typically, 10% to 25% is selected; in this embodiment, 10% is used as an example. Therefore, the second power of the DC motor... N =1.1×10.43≈11.47kW.

[0046] Specifically, the DC motor and lithium battery are connected via a wiring harness to ensure circuit stability and safety. The length and diameter of the wiring harness should be appropriate to reduce power loss and voltage drop.

[0047] Specifically, determining the corresponding lithium battery based on the second power and preset ratio means selecting the appropriate lithium battery according to the DC motor guide and the preset ratio. Taking a DC motor with a power of 11.5kW as an example, according to the preset ratio, four 24V, 200A lithium batteries are needed to ensure sufficient reserve power.

[0048] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0049] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A railcar equipped with a screw air compressor, characterized in that, The railcar includes: a power generation unit, a drive unit, a screw air compressor, and an air storage tank, wherein... The power generation device provides electrical energy to the drive device, so that the drive device drives the screw air compressor to produce gas with a preset pressure; The gas is stored in the gas tank and is used to provide braking pressure for the vehicle.

2. The railcar according to claim 1, characterized in that, The power generation device includes: an engine, a generator, and a lithium battery, wherein, The starter is used to drive the generator to generate electrical energy; The electrical energy is stored in the lithium battery.

3. The railcar according to claim 1, characterized in that, The drive device includes a DC motor and a connecting plate, wherein the output shaft of the DC motor transmits power through the connecting plate to drive the screw air compressor to generate air pressure.

4. The railcar according to claim 2, characterized in that, The power generation device further includes: a rechargeable lamp, wherein, The charging light is installed on the dashboard of the railcar driver's cab to indicate the charging status of the lithium battery.

5. The railcar according to claim 1, characterized in that, The railcar also includes: a left brake caliper and a right brake caliper, wherein... The air tank is connected to the left brake caliper and the right brake caliper, respectively.

6. A method for configuring a railcar, characterized in that, The method, applied to a railcar with a screw air compressor as described in any one of claims 1 to 5, comprises: Based on the preset braking pressure requirements of the railcar, the first power of the screw air compressor is determined; Based on the first power, the corresponding DC motor and lithium battery are determined; Based on the DC motor, the engine power is determined.

7. The method according to claim 6, characterized in that, The determination of the first power of the screw air compressor based on the preset railcar braking pressure requirement includes: determining the first power of the screw air compressor based on the preset railcar braking pressure requirement, discharge volume and total compressor efficiency.

8. The method according to claim 6, characterized in that, The first power of the screw air compressor is calculated using the following formula: P =( q × p ) / (60×1000× ) in, P This indicates the first power of the screw air compressor. q This indicates engine displacement, measured in meters (m). 3 / min, p This indicates the exhaust pressure, measured in Pa, which represents the preset braking pressure requirement for the railcar. This indicates the overall efficiency of the screw air compressor.

9. The method according to claim 6, characterized in that, The step of determining the corresponding DC motor and lithium battery based on the first power includes: Based on the first power and transmission efficiency, the second power of the corresponding DC motor is determined; Based on the second power and the preset ratio, the corresponding lithium battery is determined.

10. The method according to claim 9, characterized in that, The second power of a DC motor is calculated using the following formula: N = a × P in, N This indicates the second power rating of the DC motor, measured in kW. a Indicates transmission efficiency.

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