Energy recovery device protection device for electric locomotive

Abstract

The embodiment of the utility model provides an electric locomotive energy recovery device protection device which comprises a box body, a vibration absorption mechanism is arranged outside the box body, and the vibration absorption mechanism is used for absorbing vibration to enable the box body to keep stable. The device further comprises an in-box positive pressure maintaining mechanism which is used for enabling the air pressure of an inner cavity of the box body to be larger than that of the outside of the box body. The technical scheme is applied to protection of the energy feedback device in braking of a wheel braking system of equipment such as a coke oven coal charging car, a coke pusher or a coke barrier car, so that the energy feedback device can be used in a special equipment operation environment in the coking field. The vibration absorption mechanism can absorb vibration, the vibration absorption mechanism is used for buffering the vibration, and the influence of the vibration on the energy feedback single machine in the box body is reduced. The positive pressure maintaining mechanism in the box enables the air pressure of the inner cavity of the box body to be larger than that of the outside of the box body, so that dust entering the box body is reduced, and air exhausted from the box body in the positive pressure maintaining process can dissipate heat of equipment in the box body.

Description

Technical Field

[0001] This utility model belongs to the technical field of coking equipment, and in particular relates to a protection device for an energy recovery device for electric locomotives. Background Technology

[0002] During coking production, when the coke pusher car brakes, the AC power from the grid is converted to DC power to enable frequency conversion operation of the braking equipment. However, this also puts the frequency converter under high voltage. If this high voltage is not handled promptly, it can impact the internal capacitors of the frequency converter, causing voltage rise and potentially damaging the converter. To protect the frequency converter and other equipment, a braking resistor box is typically used to divert some voltage and release this energy through heat, resulting in significant waste and increased ambient temperature in the workshop. This necessitates the use of exhaust fans and air conditioning to cool the main power distribution room, increasing electricity costs. Under high temperatures, components in the main power distribution room age faster, shortening the lifespan of electrical equipment and increasing the failure rate. While energy-saving and emission-reduction technologies, such as dedicated energy feedback devices for frequency converters, are used in electric vehicles, high-speed rail, and elevators to extend equipment lifespan and reduce failure rates, these technologies are difficult to directly apply to the coking industry. The equipment operating environment in the coking field is unique, with a series of problems such as high temperature, high humidity, high dust, and significant vibration.

[0003] While stand-alone energy recovery units possess the basic function of energy recovery, their stability and adaptability are lacking when facing the harsh environment of the coking industry. If directly applied to coal charging cars and coke pushing cars in the coking field, a series of problems may arise, such as poor heat dissipation leading to equipment failure and vibration affecting equipment lifespan. Therefore, further optimization and adaptation are needed to achieve the goal of energy recovery from coking locomotives. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of this utility model embodiment is to provide a protection device for an energy recovery device for electric locomotives.

[0005] The technical solution adopted in this embodiment of the utility model is a protective device for an energy recovery device for electric locomotives, including a housing. A vibration absorption mechanism is provided on the outside of the housing, and the vibration absorption mechanism is used to absorb vibration and keep the housing stable.

[0006] It also includes an internal positive pressure maintaining mechanism, which is used to make the air pressure inside the box greater than that outside the box.

[0007] Furthermore, the vibration absorption mechanism includes a bottom spring assembly, which includes a plurality of first damping springs, the first damping springs being fixedly connected to the bottom of the housing.

[0008] Furthermore, the vibration absorption mechanism also includes a top spring assembly, which includes a plurality of second damping springs fixedly connected to the top of the housing.

[0009] Furthermore, the positive pressure maintaining mechanism inside the box includes an air inlet pipe and an air outlet pipe. The air inlet pipe is connected to the bottom of the inner cavity of the box, and the air outlet pipe is connected to the top of the inner cavity of the box. The air inlet pipe introduces gas into the inner cavity of the box, and the air outlet pipe is used for gas overflow.

[0010] Furthermore, the inner cavity of the box is provided with a gas distribution plate, which divides the inner cavity of the box into upper and lower parts. The gas distribution plate is positioned above the air inlet pipe that connects to the box, and several ventilation holes are evenly opened on the gas distribution plate.

[0011] Furthermore, a valve is installed on the intake pipe to control the on / off state and flow rate of compressed air in the intake pipe.

[0012] Furthermore, a check valve is installed on the vent pipe, and a dustproof net is installed at the vent end of the vent pipe.

[0013] Furthermore, a bottom plate is provided at the bottom of the box, and the top of the bottom plate is fixedly connected to the end of the first shock-absorbing spring away from the box.

[0014] Furthermore, the enclosure is also provided with inlet and outlet holes that connect to the internal cavity of the enclosure.

[0015] Compared with existing technologies, the energy recovery device protection device for locomotives proposed in this utility model is applied to the protection of energy feedback devices in the braking systems of equipment such as coke oven charging cars, coke pushing cars, or coke quenching cars, enabling the energy feedback device to be used in the special operating environment of equipment in the coking field. The vibration absorption mechanism can absorb vibrations, using the vibration absorption mechanism to buffer vibrations and reduce the impact of vibrations on the energy feedback unit inside the housing.

[0016] The positive pressure maintaining mechanism inside the enclosure ensures that the air pressure inside the enclosure is greater than that outside the enclosure, thereby reducing dust entering the enclosure. Furthermore, the gas discharged from the enclosure during the positive pressure maintenance process can dissipate heat from the equipment inside the enclosure.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit the present invention.

[0018] The overview of various implementations or examples of the technology described in this utility model is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0019] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the utility model. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0024] See Figure 1 This utility model provides a protection device for an energy recovery device for electric locomotives, including a housing 1. The housing 1 is provided with a vibration absorption mechanism on its exterior, which is used to absorb vibration and keep the housing 1 stable.

[0025] It also includes an internal positive pressure maintaining mechanism, which ensures that the air pressure inside the housing 1 is greater than that outside the housing 1. This technical solution is applied to the protection of energy feedback devices in the braking systems of equipment such as coke oven charging cars, coke pushing cars, or coke quenching cars, enabling the energy feedback devices to be used in the special operating environment of equipment in the coking field. The vibration absorption mechanism can absorb vibrations, buffering vibrations and reducing the impact of vibrations on the energy feedback unit inside the housing. During use, the energy feedback unit is installed inside the housing 1.

[0026] Equipment such as coke oven charging cars, coke pushers, or coke quenchers generate continuous vibrations during operation, which may cause loosening of internal components of the energy feedback unit and affect the normal operation of the equipment.

[0027] In some embodiments, the vibration absorption mechanism includes a bottom spring assembly comprising a plurality of first damping springs 3, which are fixedly connected to the bottom of the housing 1. The plurality of first damping springs 3 are used to dampen the vibration of the housing 1.

[0028] In some embodiments, the vibration absorption mechanism further includes a top spring assembly comprising a plurality of second damping springs 10, which are fixedly connected to the top of the housing 1. The plurality of second damping springs 10 also serve to dampen the vibration of the housing 1. Simultaneously, the second damping springs 10 and the first damping springs 3, located at the bottom and top of the housing 1 respectively, form a symmetrical vibration isolation system in the vertical direction, effectively absorbing impacts and vibrations from different directions. The second damping springs 10 and the first damping springs 3 work together to quickly dissipate energy, reduce amplitude, thereby reducing the risk of resonance and improving vibration isolation efficiency. Furthermore, the symmetrical fixing method provides uniform support, preventing the housing 1 from tilting or swaying due to uneven force on one side. Under dynamic loads (such as vehicle bumps), the dual damping springs coordinate compression and tension, maintaining the horizontal posture of the housing 1 and improving overall stability.

[0029] In some embodiments, the positive pressure maintaining mechanism includes an inlet pipe 5 and an outlet pipe 7. The inlet pipe 5 connects to the bottom of the inner cavity of the housing 1, and the outlet pipe 7 connects to the top of the inner cavity of the housing 1. The inlet pipe 5 introduces gas into the inner cavity of the housing 1, and the outlet pipe 7 is used for gas overflow. The positive pressure maintaining mechanism ensures that the air pressure inside the housing 1 is greater than the air pressure outside the housing 1, thereby reducing dust entry into the housing 1. Furthermore, the gas discharged from the housing 1 during the positive pressure maintenance process can dissipate heat from the equipment inside the housing 1. In use, the inlet pipe 5 is connected to an on-board compressed air tank as a compressed air source.

[0030] The inner cavity of the housing 1 is equipped with a gas distribution plate 6, which divides the inner cavity of the housing 1 into upper and lower parts. The gas distribution plate 6 is positioned above the connection point between the air inlet pipe 5 and the housing 1. Several evenly spaced ventilation holes are formed on the gas distribution plate 6. Compressed air entering the housing 1 through the air inlet pipe 5 is evenly distributed through the distribution plate and flows through the housing 1, finally exiting through the top outlet pipe 7, thereby carrying away the heat generated by the electrical components inside the housing 1. During use, the energy feedback unit is installed above the gas distribution plate 6.

[0031] A valve is installed on the intake pipe 5 to control the on / off state and flow rate of compressed air in the intake pipe 5.

[0032] A check valve 8 is installed on the exhaust pipe 7, and a dustproof net 9 is installed at the exhaust end of the exhaust pipe 7. The dustproof net 9 is used to prevent dust from entering the housing from the exhaust pipe 7, especially when equipment such as coke oven charging cars, coke pushing cars, or coke quenching cars are shut down and there is no compressed air supply from the on-board compressed air storage tank, thus preventing dust from entering the housing from the exhaust pipe 7.

[0033] A base plate 2 is provided at the bottom of the housing 1, and the top of the base plate 2 is fixedly connected to the end of the first shock-absorbing spring 3 away from the housing 1. The base plate 2 serves as the mounting base for the housing 1, which helps to simplify the installation process.

[0034] The housing 1 is also provided with inlet and outlet holes 4 that connect to the inner cavity of the housing 1.

[0035] In operation, the energy feedback unit is electrically connected to the energy storage module and the inverter feedback module. The energy storage module stores the electrical energy recovered by the energy feedback module, while the inverter feedback module converts the recovered electrical energy into AC power for grid connection. Recovered electrical energy is preferentially stored in the energy storage module. When the energy storage module is fully loaded, the recovered electrical energy is converted back into AC power by the inverter feedback module and fed back to the grid. The electrical energy stored in the energy storage module can be used for auxiliary systems of the locomotive, such as lighting, air compressors, and refrigeration. The energy feedback unit is installed inside the housing 1. Gas enters the housing 1 through the inlet pipe 5, passes through the gas distribution plate 6, and is evenly distributed before flowing through the housing 1, finally exiting through the top outlet pipe 7. This process removes heat generated by the electrical components inside the housing 1, ensuring their normal operation. The air outlet pipe 7 is equipped with a check valve 8. When equipment such as the coke oven charging car, coke pushing car or coke quenching car is stopped, the on-board compressed air storage tank has no compressed air supply. The check valve 8 can prevent air backflow and cause external dusty air to enter the box 1.

[0036] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A protection device for an energy recovery device in an electric locomotive, comprising a housing (1), characterized in that, The box (1) is provided with a vibration absorption mechanism on its exterior. The vibration absorption mechanism is used to absorb vibrations and keep the box (1) stable. It also includes a positive pressure maintaining mechanism inside the box, which is used to make the air pressure inside the box (1) greater than that outside the box (1).

2. The protection device for an energy recovery device in an electric locomotive according to claim 1, characterized in that, The vibration absorption mechanism includes a bottom spring assembly, which includes a plurality of first damping springs (3), and the first damping springs (3) are fixedly connected to the bottom of the housing (1).

3. The protection device for an energy recovery device for electric locomotives according to claim 2, characterized in that, The vibration absorption mechanism also includes a top spring assembly, which includes a plurality of second damping springs (10), the second damping springs (10) being fixedly connected to the top of the housing (1).

4. The energy recovery device protection device for an electric locomotive according to claim 1, characterized by The positive pressure maintaining mechanism inside the box includes an air inlet pipe (5) and an air outlet pipe (7). The air inlet pipe (5) is connected to the bottom of the inner cavity of the box body (1), and the air outlet pipe (7) is connected to the top of the inner cavity of the box body (1). The air inlet pipe (5) introduces gas into the inner cavity of the box body (1), and the air outlet pipe (7) is used for gas overflow.

5. A protection device for an energy recovery device in an electric locomotive according to claim 4, characterized in that, The inner cavity of the box (1) is provided with a gas distribution plate (6), which divides the inner cavity of the box (1) into upper and lower parts. The gas distribution plate (6) is located above the air inlet pipe (5) that connects to the box (1). Several air vents are evenly opened on the gas distribution plate (6).

6. A protection device for an energy recovery device in an electric locomotive according to claim 4, characterized in that, A valve is installed on the air intake pipe (5) to control the on / off state and flow rate of compressed air in the air intake pipe (5).

7. A protection device for an energy recovery device in an electric locomotive according to claim 4, characterized in that, A check valve (8) is installed on the air outlet pipe (7), and a dustproof net (9) is installed at the air outlet end of the air outlet pipe (7).

8. A protection device for an energy recovery device in an electric locomotive according to claim 2, characterized in that, A base plate (2) is provided below the box (1), and the top of the base plate (2) is fixedly connected to the end of the first shock-absorbing spring (3) away from the box (1).

9. A protection device for an energy recovery device in an electric locomotive according to claim 1, characterized in that, The box (1) is also provided with inlet and outlet holes (4) that connect to the inner cavity of the box (1).

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