Turnout area snow melting and deicing device

Abstract

The present application belongs to the field of railway technology, and relates to a turnout area snow melting and deicing device, which comprises a shell, a pressure increasing device, and a driving device connected with the pressure increasing device. The shell comprises a first cavity which is arranged as a sealed cavity. The driving device and the pressure increasing device are arranged in the first cavity. The driving device is provided with at least one gas passage. The gas passage is in communication with the outside of the first cavity at the gas inlet end, and in communication with the inside of the first cavity at the gas outlet end. The air outlet of the pressure increasing device is in communication with the outside of the shell. The driving device drives the pressure increasing device to act. Negative pressure is generated at the air inlet of the pressure increasing device. Under the action of the pressure difference between the inside and outside of the first cavity, the gas outside the first cavity enters the first cavity through the gas passage, is sucked into the pressure increasing device, is compressed in the pressure increasing device, and is sprayed out of the air outlet of the pressure increasing device. The driving device and the pressure increasing device rotate synchronously. The compressed high-pressure air is sprayed out of the air outlet of the pressure increasing device at high speed. The device is convenient to install and use.

Description

Technical Field

[0001] This invention belongs to the field of railway technology, and in particular relates to a snow melting and de-icing device for switch areas. Background Technology

[0002] With the continuous development of industrial production and manufacturing, the requirements for ventilation equipment and air compression equipment are getting higher and higher. In industries such as mining, railway, highway, tunnel construction, and narrow working conditions, traditional screw air compressors require the main unit, air tank, and pneumatic fan to work together to achieve the purpose of ventilation, which consumes a lot of air and has high costs. Electric fans consume a lot of electricity, are large in size, heavy in weight, and require a lot of installation and maintenance work. Summary of the Invention

[0003] In view of the above problems, the present invention provides a snow melting and de-icing device for turnout areas to solve the above or other problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a snow melting and de-icing device for turnout areas, comprising a housing, a pressurizing device, and a driving device connected to the pressurizing device. The housing includes a first cavity, which is configured as a sealed cavity. The driving device and the pressurizing device are both located in the first cavity. The driving device is provided with at least one gas channel. The inlet end of the gas channel is connected to the outside of the first cavity, and the outlet end of the gas channel is connected to the inside of the first cavity. The outlet of the pressurizing device is connected to the outside of the housing. The driving device drives the pressurizing device to operate, and a negative pressure is generated at the inlet of the pressurizing device. Under the action of the pressure difference between the inside and outside of the first cavity, the gas outside the first cavity enters the first cavity through the gas channel, is drawn into the pressurizing device, compressed in the pressurizing device, and sprayed out from the outlet of the pressurizing device.

[0005] Furthermore, the drive device includes a drive housing and a power component disposed within the drive housing. The gap between the drive housing and the outer wall of the power component is configured as a gas channel. One end of the drive housing and the corresponding end of the power component are configured as an open structure to form the air inlet end of the gas channel.

[0006] Furthermore, the number of gas channels is one, and the gas channel is an annular channel structure; or, the number of gas channels is multiple, and multiple gas channels are arranged sequentially along the circumferential direction of the power component. Multiple partitions are provided on the inner wall of the drive housing, and multiple partitions are arranged sequentially along the circumferential direction of the drive housing. The partitions are in contact with the outer wall of the power component, and the gap between adjacent partitions forms a gas channel.

[0007] Furthermore, the other end of the drive housing, corresponding to the other end of the power component, is configured as a closed structure, and heat dissipation holes are provided on the side wall of the drive housing corresponding to the gas passage for gas to flow out.

[0008] Furthermore, the turbocharger structure includes a volute housing and a turbine housed within the volute housing. The turbine is mounted on the output shaft of the power unit. The volute housing is connected to the drive housing, and a sealing structure is provided at the connection between the volute housing and the drive housing to seal the connection.

[0009] Furthermore, the housing also includes a second cavity. The first cavity and the second cavity are separated by a partition plate. The partition plate is provided with a vent hole, which is connected to the air inlet end of the gas channel, so that the gas in the second cavity enters the gas channel through the vent hole and the air inlet end of the gas channel.

[0010] Furthermore, the second cavity is provided with at least one air inlet, and the second cavity is connected to the outside of the housing through the air inlet. A filter device is provided at the air inlet to filter the gas entering the second cavity.

[0011] Furthermore, it also includes a frequency converter and a switching device connected to each other. The frequency converter and the switching device are located in the second cavity. The switching device is connected to the power supply to control the on and off of the circuit. The frequency converter is connected to the drive device to control the speed and torque of the drive device.

[0012] Furthermore, it also includes a rain and snow sensor and a relay. The rain and snow sensor is located outside the housing and is connected to the relay. The relay is connected to the switching device and controls the switching device to open or close based on the detection signal from the rain and snow sensor.

[0013] Furthermore, the switching device is a contactor, and the driving device is a motor.

[0014] Due to the adoption of the above technical solution, the snow melting and de-icing device in the turnout area has a simple structure and is easy to install. It has a booster device and a drive device. The drive device drives the booster device to rotate. The turbine of the booster device is installed on the output shaft of the drive device. The drive device and the booster device are coaxial, so that the drive device and the booster device rotate synchronously. The booster device is a turbo booster structure that compresses the air. The compressed high-pressure air is ejected from the air outlet of the booster device.

[0015] Equipped with an isolation plate, the internal space of the housing is divided into a first chamber and a second chamber. The first chamber is a sealed chamber structure, and the booster and drive device are located in the first chamber. The second chamber is connected to the outside. A negative pressure is generated at the air inlet of the booster, so that the outside air is drawn into the first chamber through the second chamber and the drive device under the action of the pressure difference between the inside and outside of the housing. The air is then drawn into the booster for compression. When the air flows through the drive device, it exchanges heat with the drive device, which dissipates heat. The drive device drives the turbine to operate, increasing the gas pressure. The booster method of the drive device (motor) driving the booster device (turbocharger structure) can stably provide the required boost effect, avoiding the "turbo lag" phenomenon of traditional turbochargers. Compared with traditional fans and screw air compressors, it is more energy-efficient, smaller in size, does not require an air tank, and is easy to install, use, and maintain.

[0016] The first chamber is a sealed box structure. The drive device is equipped with a gas channel, with an open inlet and a closed outlet, not connected to the outside. The side wall of the gas channel has heat dissipation holes, and the corresponding position on the isolation plate has ventilation holes. These holes correspond to and are connected to the inlet of the gas channel, allowing the gas channel to connect with the second chamber. Gas entering the second chamber enters the gas channel through the ventilation holes, flows within the gas channel, and exits through the heat dissipation holes, entering the first chamber. Under the negative pressure of the inlet of the booster device, the gas is drawn into the booster device. The flow path of the gas is controlled, allowing external gas to enter the booster device along the flow path, so that the booster device compresses and accelerates the gas, causing the gas to be ejected at high speed to clear snow from the turnout area. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a snow melting and de-icing device for a turnout area according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the main structure of a turnout area snow melting and de-icing device according to an embodiment of the present invention;

[0019] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure;

[0020] Figure 4 This is a schematic diagram of the drive device and pressurizing device of the turnout area snow melting and de-icing device according to an embodiment of the present invention, with the housing removed.

[0021] Figure 5 yes Figure 4 A schematic diagram of the structure viewed from below;

[0022] Figure 6This is a schematic diagram of the housing (top end cap omitted) according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the gas flow path according to an embodiment of the present invention.

[0024] In the diagram: 1. Upper housing; 2. Lower housing; 3. Air outlet; 4. Air inlet; 5. Filter device; 6. Frequency converter; 7. Isolation plate; 8. First cavity; 9. Pressurization device; 10. Drive device; 11. Switch device; 12. Second cavity; 13. Air inlet; 14. Drive housing; 15. Power component; 16. Gas passage; 17. Heat dissipation hole; 18. Volute; 19. Turbine; 20. Vent hole; 21. Separator. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 The diagram shows a structural schematic of an embodiment of the present invention. This embodiment relates to a snow melting and de-icing device for a turnout area, which has a driving device and a pressurizing device disposed in a sealed cavity. The driving device drives the pressurizing device to operate, and a negative pressure is generated at the air inlet of the pressurizing device. By utilizing the pressure difference between the sealed cavity and the outside, air is allowed to enter the sealed cavity and then into the pressurizing device. The pressurizing device compresses and pressurizes the air, causing the gas to be ejected in a high-pressure state to blow away and remove snow, sand, and other foreign objects on the rails in the turnout area. It can also be used for ventilation in narrow working conditions. It is small in size and easy to install and use.

[0027] A snow melting and de-icing device for switch areas, such as Figures 1-7As shown, the device includes a housing, a pressurizing device 9, and a driving device 10 connected to the pressurizing device 9. The housing includes a first cavity 8, which is configured as a sealed cavity. Both the driving device 10 and the pressurizing device 9 are located within the first cavity 8. The driving device 10 has at least one gas channel 16. The inlet end of the gas channel 16 communicates with the outside of the first cavity 8, and the outlet end of the gas channel 16 communicates with the inside of the first cavity 8. The outlet of the pressurizing device 9 communicates with the outside of the housing. The driving device 10 drives the pressurizing device 9 to operate, generating a negative pressure at the inlet of the pressurizing device 9. The pressure difference between the inside and outside of the first cavity 8... In this process, gas outside the first cavity 8 enters the first cavity 8 through the gas channel 16, is drawn into the pressurizing device 9 and compressed within the pressurizing device 9, and is ejected from the air outlet of the pressurizing device 9. The gas channel 16 controls the flow direction of the gas, so that the gas outside the first cavity 8 flows in the set flow direction and enters the first cavity 8. At the same time, the gas exchanges heat with the driving device 10 during the flow in the gas channel 16, which dissipates heat from the driving device 10. The gas entering the first cavity 8 is drawn into the pressurizing device 9 under the influence of the negative pressure at the air inlet of the pressurizing device 9.

[0028] To ensure the cleanliness of the gas entering the gas channel 16, the housing also includes a second cavity 12. The first cavity 8 and the second cavity 12 are separated by a partition plate 7. The partition plate 7 is provided with a vent hole 20, which is connected to the air inlet of the gas channel 16, so that the gas in the second cavity 12 enters the gas channel 16 through the vent hole 20 and the air inlet of the gas channel 16.

[0029] Specifically, the snow melting and de-icing device for the turnout area includes a housing, a pressurizing device 9 disposed inside the housing, a driving device 10 connected to the pressurizing device 9, and an isolation plate 7. The isolation plate 7 is connected to the housing, and the internal space of the housing is divided into a first cavity 8 and a second cavity 12 by the isolation plate 7. The second cavity 12 is configured to communicate with the outside to allow external gas to enter the second cavity. The first cavity 8 is configured as a sealed cavity to meet the working conditions of the pressurizing device 9 and control the gas flow path. The pressurizing device 9 and the driving device 10 are disposed in the first cavity 8, and the driving device 10 is connected to the second cavity 12. The air outlet 3 of the pressurizing device 9 extends to the outside of the first cavity 8, so that the air outlet 3 of the pressurizing device 9 is connected to the first cavity 12. The cavity 8 is connected to the outside. The drive device 10 drives the booster device 9 to operate. A negative pressure is generated at the air inlet 13 of the booster device 9, creating a pressure difference between the first cavity 8 and the outside of the shell. Under the action of the pressure difference, the external gas enters the second cavity 12. The external gas enters the drive device 10 through the connection between the drive device 10 and the second cavity 12, flows through the drive device 10 and enters the first cavity 12. It is then drawn in through the air inlet 13 of the booster device 9. The external gas is compressed inside the booster device 9 and then ejected at high speed from the air outlet 3. While compressing and increasing the speed of the external gas, the drive device 10 is cooled. At the same time, the external gas is heated during the compression process, causing the gas to be ejected at high pressure, melting and removing the snow in the turnout area.

[0030] Specifically, such as Figures 1-3 and Figure 6 As shown, the aforementioned housing is a housing structure with an internal cavity. The housing acts as a skeleton, facilitating the installation of the isolation plate 7, the pressurizing device 9, and the driving device 10. The housing also protects the isolation plate 7, the pressurizing device 9, and the driving device 10. The isolation plate 7, the pressurizing device 9, and the driving device 10 are located inside the housing, making the overall structure of the turnout area snow melting and de-icing device compact and facilitating the installation of the entire device.

[0031] The housing can be an integral structure, with the partition plate 7 fixedly installed inside the housing, dividing the internal space of the housing into a first cavity 8 and a second cavity 12. Alternatively, the housing can be a split structure, including an upper housing 1 and a lower housing 2. Both the upper housing 1 and the lower housing 2 are box structures with one open end and internal accommodating space. The partition plate 7 is provided between the upper housing 1 and the lower housing 2, and the partition plate 7 is connected to both the upper housing 1 and the lower housing 2. The upper housing 1 is connected to the lower housing 2 together through the partition plate 7. The partition plate 7 seals the open end of the upper housing 1 and the open end of the lower housing 2. The upper housing 1 and the partition plate 7 form the second cavity 12, and the lower housing 2 and the partition plate 7 form the first cavity 8. Alternatively, the housing can be any other structure with internal accommodating space, selected according to actual needs, and no specific requirements are specified here.

[0032] In some feasible embodiments, preferably, the housing is a split structure, with both the upper housing 1 and the lower housing 2 being box structures with internal accommodating space, and both having an open structure on one side facing each other. The aforementioned partition plate 7 is a plate structure, with one side of the partition plate 7 fixedly connected to the open end of the upper housing 1, and the other side of the partition plate 7 fixedly connected to the open end of the lower housing 2. This fixed connection can be achieved through bolts or other connecting parts, welding, riveting, or other fixed connection methods, selected according to actual needs, and no specific requirements are specified here.

[0033] The upper shell 1 and lower shell 2 are arranged vertically, with the upper shell 1 positioned above the lower shell 2. Both the upper shell 1 and lower shell 2 can be integrally formed shell structures, or they can be box structures formed by multiple side plates fixedly connected, depending on actual needs. No specific requirements are specified here. When the lower shell 2 is an integrally formed shell structure, the connection between the lower shell 2 and the isolation plate 7 is sealed, making the first cavity 8 formed by the lower shell 2 and the isolation plate 7 a sealed cavity structure. When the lower shell 2 is formed by multiple side plates fixedly connected, the connections between the side plates are sealed, and the connection between the isolation plate 7 and the lower shell 2 is also sealed, making the first cavity 8 formed by the lower shell 2 and the isolation plate 7 a sealed cavity structure. In this structure, the first cavity 8 has only one opening communicating with the outside (the connection between the drive device 10 and the second cavity 12). External gas can only enter the first cavity 8 through the second cavity 12, and there are no other ways for it to enter the first cavity 8, thus meeting the working conditions of the pressurization device 9 and the heat dissipation conditions of the drive device 10.

[0034] The sealing structure described above can be achieved by using sealant, sealing strips, or other structures that can achieve a seal, depending on the actual needs. No specific requirements are specified here.

[0035] The aforementioned drive device 10 and pressurizing device 9 are both disposed within the first cavity 8 formed by the lower housing 2 and the isolation plate 7. The drive device 10 is fixedly installed within the first cavity 8. The drive device 10 can be fixedly connected to the side wall of the lower housing 2, or one end of the drive device 10 can be fixedly connected to the isolation plate 7. The method of fixing and installing the drive device 10 in the first cavity 8 can be selected according to actual needs, and no specific requirements are made here. In some feasible embodiments, preferably, the drive device 10 is fixedly connected to the isolation plate 7. Multiple fixing holes are provided on the isolation plate 7, and mounting holes are provided at corresponding positions on the drive device 10. Bolts pass through the fixing holes and mounting holes in sequence to connect the drive device 10 and the isolation plate 7 together, thus fixing the drive device 10 and the isolation plate 7 together.

[0036] like Figures 1-5As shown, the booster device 9 is fixedly connected to the drive device 10. The booster device 9 operates under the drive of the drive device 10. The housing of the drive device 10 and the housing of the booster device 9 are fixedly connected by bolts or other connecting parts, thus fixing the drive device 10 and the booster device 9 together. The booster device 9 is fixedly mounted on the isolation plate 7 by the drive device 10.

[0037] Specifically, such as Figures 4-5 and Figure 7 As shown, the aforementioned drive device 10 includes a drive housing 14 and a power component 15. The power component 15 is disposed inside the drive housing 14. The gap between the drive housing 14 and the outer wall of the power component 15 is configured as a gas channel 16. One end of the drive housing 14 and the corresponding end of the power component 15 are configured as an open structure, forming the air inlet end of the gas channel 16. The drive housing 14 protects the power component 15. A gap is provided between the power component 15 and the drive housing 14, that is, the outer wall of the power component 15 and the inner wall of the drive housing 14 form a gas channel 16, which guides the flow of external gas, allowing external gas entering the second cavity 12 to enter the gas channel 16 and flow within it. The gas channel 16 guides the flow of gas, limits the flow direction of external gas, and the gas exchanges heat with the power component 15 during the flow process, allowing the power component 15 to dissipate heat.

[0038] The number of gas channels 16 can be one. In this case, the gas channel 16 can be an annular channel structure. One end of the gas channel 16 is connected to the outside and is an open end (air inlet, the entrance of external gas). The other end of the gas channel 16 is a closed structure and is not connected to the outside. Gas cannot flow out from the closed end, thus changing the gas flow direction and causing the gas to flow out from the gas channel 16 at a set outlet position (air outlet) and enter the first cavity 8, thereby controlling the gas flow direction. Alternatively, the number of gas channels 16 can be multiple. Multiple gas channels 16 are arranged sequentially along the circumferential direction of the power component 15. External gas entering the second cavity 12 enters at least some of the gas channels 16 and flows within some or all of the gas channels 16. Each gas channel 16 guides the gas flow, causing the gas to flow out from each gas channel 16 at a set outlet position and enter the first cavity 8, thereby controlling the gas flow direction. In this case, multiple partitions 21 are provided on the inner wall of the drive housing 14. The partitions 21 are arranged sequentially along the circumferential direction of the drive housing 14, and each partition 21 is arranged along the axial direction of the drive housing 14. The partition 21 is a plate structure with a certain length. One side of the partition 21 is fixedly connected to the inner wall of the drive housing 14, and the other side of the partition 21 opposite to the first side is in contact with the outer wall of the power component 15. The gap between adjacent partitions 21 forms a gas channel 16. That is, any two adjacent partitions 21, the inner wall of the drive housing 14, and the outer wall of the power component 15 constitute a gas channel 16. One end of the gas channel 16 is an open end, and external gas can enter the gas channel 16 from the open end and flow in the gas channel 16. The other end of the gas channel 16 is set as a closed structure, which is a closed end and does not communicate with the outside, so that the gas in the gas channel 16 flows out from the set outflow position and enters the first cavity 8. The number of gas channels 16 is selected according to actual needs and is not specifically required here. Each separator 21, while separating the space between the inner wall of the drive housing 14 and the outer wall of the power component 15, also strengthens the drive housing 14, reduces deformation, and extends its service life. The separator 21 is fixedly connected to the drive housing 14. This fixed connection can be integrally formed, welded, or other fixed connection methods, selected according to actual needs and is not specifically required here.

[0039] To enable the gas in the gas channel 16 to flow out from the gas channel 16 and out at a set position, entering the first cavity 8 to achieve gas flow and limit the direction of gas flow, a heat dissipation hole 17 is provided on the drive housing 14. The heat dissipation hole 17 is located on the closed end side of the drive housing 14 near the gas channel 16. The heat dissipation hole 17 is located at the gas outlet end of the gas channel 16 and is a through hole, so that the gas channel 16 is connected to the outside of the drive housing 14. External gas enters from the open end of the gas channel 16, flows along the gas channel 16, and flows out from the heat dissipation hole 17. During the process of external gas flowing in the gas channel 16, it exchanges heat with the power component 15, dissipates heat from the power component 15, and extends the service life of the power component 15.

[0040] There are multiple heat dissipation holes 17, which are arranged according to the structure of the gas channel 16. When there is only one gas channel 16, all the multiple heat dissipation holes 17 are connected to the gas channel 16. The multiple heat dissipation holes 17 are arranged sequentially along the circumferential direction of the drive housing 14, so that external gas flows out from each heat dissipation hole 17. When there are multiple gas channels 16, at least one heat dissipation hole 17 is provided on the side of each gas channel 16 near the closed end, so that external gas in each gas channel 16 flows out from the corresponding heat dissipation hole 17.

[0041] In order to allow external gas entering the second cavity 12 to enter the gas channel 16, a vent 20 is provided on the isolation plate 7. The opening end of the gas channel 16 corresponds to the vent 20, and the vent 20 is connected to the gas channel 16, so that the external gas entering the second cavity 12 enters the gas channel 16 through the vent 20. According to the installation method of the drive device 10, one end of the drive housing 14 with the opening of the gas channel 16 is fixedly connected to the isolation plate 7. The opening of the gas channel 16 faces the isolation plate 7. Therefore, the vent 20 is arranged between multiple fixing holes. The multiple fixing holes are arranged sequentially along the circumferential direction of the vent 20. The fixing holes realize the fixed connection between the drive housing 14 and the isolation plate 7. The vent 20 corresponds to the gas channel 16, realizing the communication between the vent 20 and the gas channel 16. The vent 20 is a through hole, so that the gas channel 16 is connected to the second cavity 12, so that the external gas entering the second cavity 12 can enter the first cavity 8 through the vent 20 and the gas channel 16.

[0042] The number of vent holes 20 is at least one, and can be selected according to the structure of the gas channel 16. When there is only one gas channel 16, the number of vent holes 20 can be one. In this structure, the area of ​​the vent hole 20 covers the opening end of the gas channel 16, so that the vent hole 20 is connected to the gas channel 16. Of course, in this structure, there can also be multiple vent holes 20, each of which corresponds to and is connected to a gas channel 16. When there are multiple gas channels 16, the number of vent holes 20 can be multiple. In this structure, the number of vent holes 20 is consistent with the number of gas channels 16, and each vent hole 20 corresponds to and is connected to one gas channel 16. That is, multiple vent holes 20 correspond one-to-one with multiple gas channels 16. Of course, in this structure, the number of vent holes 20 can also be one, and the area of ​​the vent hole 20 covers the opening end of each gas channel 16, so that the vent hole 20 is connected to each gas channel 16.

[0043] The closed end of the gas passage 16 can be formed by: connecting the drive housing 14 to the power component 15 to block the end of the gas passage 16, making the end of the gas passage 16 a closed structure, thus forming a closed end; or, the end of the drive housing 14 on the closed end side of the gas passage 16 contacts the housing of the booster device 9, and the contact point is sealed, with the housing of the booster device 9 blocking the end of the drive housing 14, making the end of the gas passage 16 a closed structure, thus forming a closed end.

[0044] In some feasible embodiments, preferably, the drive device 10 is a motor, the drive housing 14 is the motor housing, and the power component 15 is the stator and rotor. The structure of the motor housing and the gap between the motor housing and the stator are structurally improved. At least one gas channel 16 is constructed between the outer wall of the stator and the inner wall of the motor housing, so that the external gas entering the second cavity 12 enters the gas channel 16 through the vent 20, flows in the gas channel 16, exchanges heat with the stator and rotor of the motor, dissipates heat, and then flows out from the heat dissipation hole 17 and enters the first cavity 8. While realizing the heat dissipation of the motor, the flow direction of the external gas is controlled so that the gas enters the first cavity 8 according to the set route to provide gas for the pressurization device 9.

[0045] The aforementioned booster device 9 has an air inlet 13 and an air outlet 3. Air enters through the air inlet 13 of the booster device 9, is compressed and accelerated within the booster device 9, and is ejected at high speed from the air outlet 3 of the booster device 9. The air inlet 13 of the booster device 9 is located inside the first cavity 8, and the air outlet 3 of the booster device 9 extends to the outside of the first cavity 8, communicating with the outside. Specifically, the booster device 9 is a turbine 19 booster structure, including a turbine 19 and a volute 18. The turbine 19 is rotatably mounted inside the volute 18, which has an air inlet 13 and an air outlet 3. The turbine 19 rotates and cooperates with the volute 18 to compress and accelerate the air entering the volute 18. Meanwhile, the friction between the air inside the vortex housing 18 and the turbine 19 causes the air temperature to rise. The low-temperature air entering the vortex housing 18 mixes with the high-temperature air inside the vortex housing 18, resulting in the ejected air being in a high-temperature state. Since different types of drive devices 10 have different rotational speeds, the turbine 19 also has different rotational speeds. As the rotational speed of the turbine 19 increases, the temperature of the ejected air also increases accordingly. It has been tested that when the rotational speed of the turbine 19 reaches 18,000 revolutions per minute, the temperature of the ejected air reaches 25°C, which is enough to melt the snow in the turnout area.

[0046] The vortex housing 18 is fixedly connected to the drive housing 14 of the drive device 10, connecting the drive device 10 and the booster device 9 together. The booster device 9 is located below the drive device 10. The vortex housing 18 is fixedly connected to one end of the drive housing 14 near the closed end of the gas channel 16. The vortex housing 18 seals the closed end of the gas channel 16, forming a closed structure. The connection between the drive housing 14 and the vortex housing 18 is sealed to prevent gas in the gas channel 16 from flowing out from the connection between the drive housing 14 and the vortex housing 18, thereby ensuring that gas flows out from the heat dissipation hole 17 of the gas channel 16. This sealing method can be achieved by sealing with sealant, setting a sealing strip, or other sealing methods, depending on actual needs. No specific requirements are specified here.

[0047] In order for the drive unit 10 to drive the booster unit 9 to compress the external gas, the drive unit 10 is connected to the booster unit 9 and is coaxially arranged. That is, the drive unit 10 and the turbine 19 share the same shaft. The turbine 19 is mounted on the output shaft of the power unit 15. When the output shaft of the drive unit 10 rotates, it synchronously drives the turbine 19 to rotate, compressing the air entering the volute 18, so that the air is ejected at high speed from the air outlet 3.

[0048] A through hole is provided on the side wall of the lower housing 2. The air outlet 3 of the vortex 18 extends through the through hole to the outside of the lower housing 2. At the same time, the connection between the air outlet 3 of the vortex 18 and the lower housing 2 is sealed to ensure the airtightness of the first cavity 8.

[0049] The second cavity 12 is provided with at least one air inlet 4, which communicates with the outside through the air inlet 4. The air inlet 4 is a through hole structure. When there are multiple air inlets 4, they are arranged sequentially along the side wall of the upper housing 1. External air enters the second cavity 12 through the air inlet 4. In order to ensure the cleanliness of the gas entering the second cavity 12 and reduce damage to the drive device 10 and the booster device 9, a filter device 5 is provided at the air inlet 4 to filter the gas entering the second cavity 12. Preferably, the filter device 5 is an air filter screen or an air filter element.

[0050] To further optimize the scheme, the snow melting and de-icing device in the turnout area also includes a frequency converter 6 and a switch 11. The frequency converter 6 is connected to the switch 11, which is connected to an external power supply to control the on / off state of the circuit. The frequency converter 6 is also connected to the drive device 10 to control the speed and torque of the drive device 10. Both the frequency converter 6 and the switch 11 are located in the second cavity 12. The switch 11 is normally open. When the switch 11 receives a closing signal and closes, the power supply provides power to the drive device 10, and the drive device 10 operates. The frequency converter 6 controls the speed and torque of the drive device 10.

[0051] In some feasible embodiments, preferably, the frequency converter 6 is a frequency converter, which is a commercially available product. The selection is made according to actual needs, and no specific requirements are made here.

[0052] In some feasible embodiments, preferably, the switching device 11 is a contactor, which is a commercially available product and can be selected according to actual needs; no specific requirements are made here.

[0053] Further optimization of the scheme includes a snow and ice removal device for the turnout area, which also includes a snow and rain sensor (not shown in the figure) and a relay (not shown in the figure). The snow and rain sensor is connected to the relay, and the relay is connected to the switch device 11. The relay controls the switching device based on the detection signal from the snow and rain sensor. The snow and rain sensor detects whether there is snow accumulation in the turnout area. When the snow and rain sensor detects snow accumulation in the turnout area, the relay activates and closes. The switch device 11 receives the relay closure signal and closes. Power is supplied to the drive device 10, which then activates. Frequency control device 6 controls the rotational speed of drive device 10. Drive device 10 drives booster device 9 to rotate, turbine 19 rotates, negative pressure is generated at air inlet 13 of volute 18. Under the action of pressure difference between the inside and outside of the housing, external gas enters the second chamber 12 through air inlet 4, enters gas channel 16 through vent 20, flows in gas channel 16, flows out from heat dissipation hole 17, enters first chamber 8, is sucked into volute 18 at air inlet 13, is compressed in volute 18, and is ejected at high speed from air outlet 3 to clear snow in the turnout area.

[0054] The aforementioned rain and snow sensor is installed on the outside of the housing so that it can detect snow accumulation in the turnout area. This rain and snow sensor is a commercially available product, and the selection should be based on actual needs; no specific requirements are specified here.

[0055] The aforementioned relays are installed on the outside of the housing and are commercially available products. The selection should be based on actual needs, and no specific requirements are specified here.

[0056] When the snow melting and de-icing device in the turnout area is working, the rain and snow sensor detects the snow accumulation in the turnout area. When snow accumulation is detected, the relay receives the detection signal and closes. After receiving the signal that the relay is closed, the switch device 11 closes, and the power supply provides power to the drive device 10. The drive device 10 then operates. The frequency converter 6 controls the speed and torque of the drive device 10, which drives the booster device 9 to rotate. Since the turbine 19 of the booster device 9 is mounted on the output shaft of the drive device 10, the drive device 10 drives the booster device 9 to rotate at the same speed. As the turbine 19 rotates, a negative pressure is generated at the air inlet 13 of the booster device 9, creating a pressure difference between the inside and outside of the casing. Under the action of the filter, a large amount of fresh air outside the shell enters the second cavity 12 after being filtered by the filter device 5 at the air inlet 4. Then it enters the gas channel 16 through the vent 20. It flows in the gas channel 16 and exchanges heat with the power component 15 of the drive device 10 to dissipate heat from the drive device 10. The gas flows out from the heat dissipation hole 17 of the gas channel 16 and enters the first cavity 8. Under the negative pressure at the air inlet 13 of the pressurizing device 9, the gas is drawn into the vortex shell 18 from the air inlet 13 of the pressurizing device 9. It is compressed in the pressurizing device 9. The compressed high-pressure gas is ejected from the air outlet 3 of the pressurizing device 9 at high speed to remove snow, sand and other foreign objects from the rails in the turnout area.

[0057] Of course, the high-pressure gas ejected can also be connected to pneumatic equipment or pneumatic fans to improve the performance of the pneumatic equipment or pneumatic fans, or directly applied to ventilation in narrow working conditions and other fields.

[0058] Due to the adoption of the above technical solution, the snow melting and de-icing device in the turnout area has a simple structure and is easy to install. It has a booster device and a drive device. The drive device drives the booster device to rotate. The turbine of the booster device is mounted on the output shaft of the drive device. The drive device and the booster device are coaxial, so that the drive device and the booster device rotate synchronously. The booster device is a turbocharger structure that compresses air. The compressed high-pressure air is ejected at high speed from the air outlet of the booster device. It has an isolation plate, which divides the internal space of the shell into a first chamber and a second chamber. The first chamber is set as a sealed chamber structure. The booster device and the drive device are set in the first chamber. The second chamber is set to communicate with the outside. A negative pressure is generated at the air inlet of the booster device, so that the external air is drawn into the first chamber through the second chamber and the drive device under the action of the pressure difference between the inside and outside of the shell. It is then drawn into the booster device for compression. When the air flows through the drive device, it exchanges heat with the drive device, which dissipates heat. The drive device drives the turbine to rotate, increasing the gas pressure. The drive device (motor) drives the booster device (turbine). The boosting structure provides a stable boosting effect, avoiding the "turbo lag" phenomenon of traditional turbochargers. Compared with traditional fans and screw air compressors, it is more energy-efficient, smaller in size, requires no air tank, and is easy to install, use, and maintain. The first chamber is a sealed box structure. The drive unit is equipped with a gas channel, with an open inlet and a closed outlet, not connected to the outside. The side wall of the gas channel has heat dissipation holes, and the corresponding position on the isolation plate has ventilation holes. These holes correspond to and are connected to the inlet of the gas channel, allowing the gas channel to connect with the second chamber. Gas entering the second chamber enters the gas channel through the ventilation holes, flows within the gas channel, and flows out through the heat dissipation holes, entering the first chamber. Under the negative pressure of the booster's inlet, the gas is drawn into the booster. The flow path of the gas is controlled, allowing external gas to enter the booster along the flow path, so that the booster compresses and accelerates the gas, causing it to be ejected at high speed to clear snow from the switch area.

[0059] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A snow melting and de-icing device for switch areas, characterized in that: The device includes a housing, a pressurizing device, and a driving device connected to the pressurizing device. The housing includes a first cavity, which is configured as a sealed cavity. The driving device and the pressurizing device are both located within the first cavity. The driving device has at least one gas channel. The inlet end of the gas channel communicates with the outside of the first cavity, and the outlet end of the gas channel communicates with the inside of the first cavity. The outlet of the pressurizing device communicates with the outside of the housing. The driving device drives the pressurizing device to operate, generating a negative pressure at the inlet of the pressurizing device. Under the action of the pressure difference between the inside and outside of the first cavity, gas from outside the first cavity enters the first cavity through the gas channel, is drawn in by the pressurizing device, compressed within the pressurizing device, and ejected from the outlet of the pressurizing device. The drive unit and the booster unit are coaxially arranged; The driving device includes a driving housing and a power component disposed within the driving housing. The gap between the outer wall of the driving housing and the power component is configured as the gas channel. One end of the driving housing and the corresponding end of the power component are configured as an open structure to form the air inlet end of the gas channel. The other end of the drive housing, corresponding to the other end of the power component, is configured as a closed structure. The side wall of the drive housing corresponding to the gas channel is provided with heat dissipation holes. The heat dissipation holes are located on the closed end side of the drive housing near the gas channel to allow gas to flow out. The closed structure is formed by connecting the drive housing and the power component, or the closed structure is formed by the drive housing contacting the housing of the booster device and sealing the contact area. The number of gas channels is one, and the gas channel is an annular channel structure; or, the number of gas channels is multiple, and the multiple gas channels are arranged sequentially along the circumferential direction of the power component. The inner wall of the drive housing is provided with multiple partitions, and the multiple partitions are arranged sequentially along the circumferential direction of the drive housing. The partitions are in contact with the outer wall of the power component, and the gap between adjacent partitions forms a gas channel. The housing also includes a second cavity, the first cavity and the second cavity are separated by a partition plate, the partition plate is provided with a vent hole, the vent hole is connected to the air inlet end of the gas channel, so that the gas in the second cavity enters the gas channel through the vent hole and the air inlet end of the gas channel; The pressurization device includes a vortex housing, which is connected to the drive housing. A sealing structure is provided at the connection between the vortex housing and the drive housing to seal the connection so that the gas in the gas channel can flow out from the heat dissipation hole. It also includes a frequency converter and a switching device connected to each other. The frequency converter and the switching device are located in the second cavity. The switching device is connected to a power supply to control the on and off of the circuit. The frequency converter is connected to the drive device to control the speed and torque of the drive device.

2. The snow melting and de-icing device for turnout areas according to claim 1, characterized in that: The turbocharger structure of the supercharging device also includes a turbine disposed inside the volute housing, and the turbine is disposed on the output shaft of the power component.

3. The snow melting and de-icing device for switch areas according to claim 1, characterized in that: The second cavity is provided with at least one air inlet, and the second cavity is connected to the outside of the housing through the air inlet. A filter device is provided at the air inlet to filter the gas entering the second cavity.

4. The snow melting and de-icing device for switch areas according to claim 1, characterized in that: It also includes a rain and snow sensor and a relay. The rain and snow sensor is located outside the housing. The rain and snow sensor is connected to the relay. The relay is connected to the switching device. The relay controls the switching device to open or close based on the detection signal from the rain and snow sensor.

5. The snow melting and de-icing device for switch areas according to claim 4, characterized in that: The switching device is a contactor, and the driving device is a motor.

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