Isolating switch for subway

Abstract

The utility model provides an isolating switch for a subway. The isolating switch for the subway comprises a switch operation platform, vibration buffering assemblies used for buffering vibration generated in the running and stopping process of the subway and a ventilation assembly used for reducing humidity in the working environment of the isolating switch, and the multiple vibration buffering assemblies are installed at the bottom end of the switch operation platform. According to the isolating switch for the metro, due to the arrangement of all the structures, part loosening caused by vibration of the metro is avoided, the ventilation efficiency of the isolating switch is improved, the humidity in the working environment of the isolating switch is reduced, and the safety of the metro is improved. Therefore, the failure rate is reduced, and meanwhile, the safety of workers is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, and in particular to a disconnecting switch for subway use. Background Technology

[0002] Disconnect switches are the most widely used electrical appliances in high-voltage switchgear, serving a isolating function. While their working principle and structure are relatively simple, their large usage and high reliability requirements significantly impact the design, construction, and safe operation of substations and power plants.

[0003] In the existing technology, firstly, vibrations are generated during subway operation and stopping. The disconnect switch contains many precision conductive components and operating mechanisms. Frequent vibrations may cause these precision components to loosen or have poor contact, leading to an increased failure rate. Secondly, the subway disconnect switch operates underground. It is affected by underground ventilation, weather conditions, and human factors. Moisture can easily accumulate underground, causing the disconnect switch to operate in a humid environment. This can lead to short circuits and breakdowns of the circuit boards inside the disconnect switch, thereby increasing the failure rate, escalating accidents, and even causing fatalities.

[0004] Therefore, there is a need to design a disconnect switch for subways in the current environment to solve the technical problems mentioned in the background. Utility Model Content

[0005] This utility model provides a disconnecting switch for subways to solve the technical problems mentioned in the background art.

[0006] This utility model provides a disconnecting switch for subways, which includes a switch operating platform, a vibration damping component for mitigating vibrations generated during subway operation and stopping, a plurality of the vibration damping components being installed at the bottom of the switch operating platform, and a ventilation component for reducing humidity in the working environment of the disconnecting switch being installed at both ends of the switch operating platform.

[0007] Optionally, the switch operating platform includes a mounting plate, a protective chamber, a switch, a chamber door, and a handle. The protective chamber is installed on the top of the mounting plate, the switch is installed inside the protective chamber, the chamber door is rotatably disposed on one side of the top of the protective chamber, and the handle is installed on the top of the chamber door.

[0008] Optionally, the vibration damping assembly includes multiple slide rods, a base plate, multiple slide plates, multiple first damping springs, and multiple second damping springs. The multiple slide rods are installed at the bottom end of the switch operating platform, the base plate is installed at the bottom end of the multiple slide rods, the multiple slide plates correspond one-to-one with the multiple slide rods, and each slide plate is slidably mounted on its corresponding slide rod. The multiple first damping springs correspond one-to-one with the multiple slide plates, and one end of each first damping spring is connected to the top end of the base plate, and the other end is connected to the bottom end of its corresponding slide plate. The multiple second damping springs correspond one-to-one with the multiple slide plates, and one end of each second damping spring is connected to the bottom end of the switch operating platform, and the other end is connected to the top end of its corresponding slide plate.

[0009] Optionally, the diameter of the spring wire of the plurality of first damping springs is greater than the diameter of the spring wire of the plurality of second damping springs.

[0010] Optionally, the ventilation assembly includes an intake fan, an intake duct, a drying device for reducing the humidity of the intake air, a filter, an outlet fan, and an outlet duct. The intake fan is installed at one end of the switch operating platform, the intake duct passes through the intake fan, and one end of the intake duct extends into the interior of the switch operating platform. The drying device is installed at the end of the intake duct that extends into the interior of the switch operating platform. The filter is installed at the end of the intake duct away from the drying device. The outlet fan is installed at the end of the switch operating platform away from the intake fan, the outlet duct passes through the outlet fan, and one end of the outlet duct extends into the interior of the switch operating platform.

[0011] Optionally, the drying device includes a mounting frame, a storage rack, and multiple air-permeable nets. The mounting frame is installed at one end of the air inlet duct that extends into the switch operating platform, the storage rack is installed inside the mounting frame, and the multiple air-permeable nets are respectively installed at both ends of the mounting frame.

[0012] The beneficial effects of this utility model are as follows:

[0013] This subway disconnect switch includes a switch operating platform, vibration damping components to mitigate vibrations generated during subway operation and stopping, and ventilation components to reduce humidity in the working environment of the disconnect switch. Multiple vibration damping components are installed at the bottom of the switch operating platform, and the ventilation components are installed at both ends of the switch operating platform. This subway disconnect switch, through the design of its various structures, avoids loosening of parts caused by subway vibrations, improves ventilation efficiency at the disconnect switch, and reduces humidity in the working environment of the disconnect switch, thereby reducing the failure rate while ensuring the safety of personnel. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a first-view structural schematic diagram of a disconnect switch for subways provided by this utility model;

[0016] Figure 2 This is a second-view structural schematic diagram of a disconnecting switch for subways provided by this utility model;

[0017] Figure 3 This is a third-view structural diagram of a disconnect switch for subways provided by this utility model;

[0018] Figure 4 This is a fourth-view structural diagram of a disconnecting switch for subways provided by this utility model;

[0019] Figure 5 This is a cross-sectional schematic diagram of a drying device for a subway disconnect switch provided by this utility model;

[0020] Explanation of reference numerals in the attached drawings: 100, switch operating platform; 110, mounting plate; 120, protective chamber; 130, switch; 140, chamber door; 150, handle; 200, vibration damping assembly; 210, slide bar; 220, base plate; 230, sliding plate; 240, first vibration damping spring; 250, second vibration damping spring; 300, ventilation assembly; 310, air inlet fan; 320, air inlet duct; 330, drying device; 331, mounting bracket; 332, storage rack; 333, breathable mesh; 340, filter screen; 350, air outlet fan; 360, air outlet duct. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to the present utility model are shown in the drawings, not all of the structures. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] Please see Figures 1 to 5 The present invention provides a subway disconnect switch including a switch operation platform 100, a vibration damping component 200, and a ventilation component 300;

[0024] Multiple vibration damping components 200 are installed at the bottom of the switch operation platform 100, and ventilation components 300 are installed at both ends of the switch operation platform 100;

[0025] Among them, the vibration damping component 200 is installed at the bottom of the switch operating platform 100, mainly playing the role of vibration damping and support. The ventilation component 300 is installed at both ends of the switch operating platform 100, with air intake at one end and air exhaust at the other end, ensuring the air circulation inside the switch operating platform 100 while also reducing the humidity of the air inside.

[0026] Meanwhile, when the disconnecting switch starts working, since most of the disconnecting switches are installed in traction substations, depots, parking lots, and along the contact network of the subway main line, their special installation locations generate a lot of vibration when the subway passes by. At this time, the vibration is transmitted to the vibration damping component 200, which absorbs the vibration layer by layer, reducing the impact of vibration on the switch operating platform 100, thereby avoiding failures caused by loosening of precision conductive parts and greatly improving safety.

[0027] Furthermore, the location where the disconnect switch is installed must not only withstand vibration, but also the large amount of water vapor generated by the humid underground environment. The ventilation component 300 can make the air inside the switch operating platform 100 circulate. When the air is drawn into the switch operating platform 100 by the ventilation component 300, it is dried before being discharged, avoiding the use of humid air for circulation. This avoids the problem of short circuit on the circuit board caused by water vapor accumulation, and greatly improves safety.

[0028] In this embodiment, the protective compartment 120 is installed on the top of the mounting plate 110, the switch 130 is installed inside the protective compartment 120, the compartment door 140 is rotatably disposed on one side of the top of the protective compartment 120, and the handle 150 is installed on the top of the compartment door 140.

[0029] The mounting plate 110 provides support, the switch 130 is installed inside the protective compartment 120, and the protective compartment 120 and the compartment door 140 provide protection, protecting the switch 130 from external influences. The compartment door 140 is opened and closed by a handle 150, ensuring that the compartment door 140 is not affected by external influences when it is closed during operation, and that the compartment door 140 can be opened for easy inspection and maintenance when operation is stopped.

[0030] In this embodiment, a plurality of slide rods 210 are installed at the bottom end of the switch operation platform 100, a base plate 220 is installed at the bottom end of the plurality of slide rods 210, a plurality of slide plates 230 correspond one-to-one with the plurality of slide rods 210, and each slide plate 230 is slidably disposed on the corresponding slide rod 210, a plurality of first damping springs 240 correspond one-to-one with the plurality of slide plates 230, and one end of each first damping spring 240 is connected to the top end of the base plate 220 and the other end is connected to the bottom end of the corresponding slide plate 230, a plurality of second damping springs 250 correspond one-to-one with the plurality of slide plates 230, and one end of each second damping spring 250 is connected to the bottom end of the switch operation platform 100 and the other end is connected to the top end of the corresponding slide plate 230.

[0031] Among them, the slide bar 210 and the base plate 220 mainly play a supporting role. When the vibration damping component 200 starts to work, the vibration generated by the subway is first transmitted to the first damping spring 240. The first damping spring 240 absorbs part of the vibration. The vibration causes the first damping spring 240 to start to extend and retract. The extension and retraction then drive the slide plate 230 connected to it to start to slide on the slide bar 210. While the slide plate 230 is sliding, it also drives the second damping spring 250 to start to extend and retract, so that the second damping spring 250 absorbs another part of the vibration. The two damping springs can disperse most of the vibration generated by the subway, thereby avoiding the loosening of precision parts caused by frequent vibration and greatly reducing the failure rate.

[0032] In this embodiment, the diameter of the spring wire of the plurality of first damping springs 240 is greater than the diameter of the spring wire of the plurality of second damping springs 250.

[0033] The vibration generated by the subway during operation is considered as a driving force. When the frequency of this driving force is close to the frequency of the vibration of the damping spring, the resonance condition is met, causing the amplitude to increase continuously and resulting in more serious damage to the disconnecting switch. Therefore, by using two different types of damping springs, the driving force cannot be matched with the frequencies of the two inconsistent damping springs at the same time, thus avoiding the occurrence of resonance.

[0034] In this embodiment, the air intake fan 310 is installed at one end of the switch operating platform 100, the air intake duct 320 passes through the air intake fan 310, and one end of the air intake duct 320 extends into the interior of the switch operating platform 100. The drying device 330 is installed at the end of the air intake duct 320 that extends into the interior of the switch operating platform 100. The filter screen 340 is installed at the end of the air intake duct 320 away from the drying device. The air outlet fan 350 is installed at the end of the switch operating platform 100 away from the air intake fan 310, and the air outlet duct 360 passes through the air outlet fan 350, and one end of the air outlet duct 360 extends into the interior of the switch operating platform 100.

[0035] The intake fan 310 operates via an external motor. Outside air enters through the intake duct 320 with a filter 340 installed and exits through the dryer 330 installed. The filter 340 prevents the intake fan 310 from drawing in other particulate matter, while the dryer 330 absorbs moisture from the incoming air, resulting in dry air being output from the intake fan 310. This dry air is then delivered into the switch operating platform 100 and drawn into the exhaust duct 360 by the exhaust fan 350 before being discharged to the outside of the switch operating platform 100. By using dry air to ventilate the switch operating platform 100, the humidity of the switch operating environment is reduced, preventing short circuits on the circuit boards caused by moisture and significantly improving operational safety.

[0036] In this embodiment, the mounting bracket 331 is installed at one end of the air inlet duct 320 that extends into the switch operation platform 100, the storage rack 332 is installed inside the mounting bracket 331, and a plurality of ventilation nets 333 are respectively installed at both ends of the mounting bracket 331.

[0037] Among them, the mounting frame 331 mainly serves a supporting function, the storage rack 332 has multiple partition areas, the desiccant is placed inside the multiple partition areas, and there are two breathable nets 333, which are installed at both ends of the mounting frame 331 respectively.

[0038] Meanwhile, when the air in the air inlet duct 320 is ready to be output to the switch operation platform 100, it first passes through one of the ventilation nets 333, and then through the storage rack 332. The water vapor in the air will react with the desiccant in the storage rack 332 during the process of passing through it. The water vapor is absorbed and carried away by the desiccant, leaving dry air to pass through the other end of the ventilation net 333, and finally enter the switch operation platform 100.

[0039] In summary, the subway disconnect switch of this utility model avoids the loosening of parts caused by subway vibration through the design of various structures, and improves the ventilation efficiency at the disconnect switch and reduces the humidity in the working environment of the disconnect switch, thereby reducing the failure rate and ensuring the safety of the staff.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An isolating switch for a subway, characterized by comprising: The utility model relates to a switch operation platform, a damping component for relieving vibration generated in subway operation and stopping process, a ventilation component for reducing humidity in switch working environment. The switch operation platform comprises a mounting plate, a protection bin, a switch, a bin door, and a handle. The damping component comprises a plurality of sliding rods, a bottom plate, a plurality of sliding plates, a plurality of first damping springs, and a plurality of second damping springs. The spring wire diameter of the first damping springs is greater than that of the second damping springs.

2. The isolating switch for a subway as claimed in claim 1, wherein The ventilation component comprises an air inlet fan, an air inlet pipeline, a drying device for reducing the humidity of inhaled air, a filter screen, an air outlet fan, and an air outlet pipeline.

3. The isolating switch for a subway train according to claim 1, wherein The drying device comprises a mounting frame, a storage rack, and a plurality of air-permeable nets.

4. The isolating switch for a subway as claimed in claim 3, wherein The mounting frame is mounted on the end of the air inlet pipeline extending into the switch operation platform.

5. The isolating switch for a subway train according to claim 1, wherein The storage rack is mounted in the mounting frame.

6. The isolating switch for a subway train according to claim 5, wherein The air-permeable nets are respectively mounted on both ends of the mounting frame.

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