CN219247944U - Isolated grounding system for rail transit - Google Patents

Abstract

The utility model discloses an isolated grounding system for rail transit. The isolated grounding system of the rail transit comprises an isolated grounding device, a streaming media server and a system host. The isolated grounding device is arranged in a track area of the track traffic. The isolated grounding device comprises a first isolated grounding disconnecting link, a second isolated grounding disconnecting link, a cross-region load switch and a controller. The load-over switch comprises a moving contact, an arc extinguishing device and a first camera device. The first image pickup device is mounted outside the arc extinguishing device. The first camera device can acquire image information of a contact fracture of the moving contact. The first camera device is connected with the video streaming media server through the controller. When the first isolation zone load switch of the isolation grounding device performs switching-on and switching-off operation, the first camera device can acquire contact fracture image information of the moving contact and transmit the acquired contact fracture image information to a system host of a remote vehicle control room, so that remote operation visualization of the isolation grounding device is realized.

Description

Isolated grounding system for rail transit

Technical Field

The utility model relates to the technical field of rail transit, in particular to an isolated grounding system of rail transit.

Background

With the continuous development of rail transit, the traction power supply mode of urban rail transit is also continuously improved and perfected. The rail transit comprises a unilateral power supply mode and a bilateral power supply mode in a power supply mode. The power supply arm of the locomotive receives power from only one traction substation, and the bilateral power supply locomotive receives power from two traction substations. In order to ensure the running stability of the rail transit, the condition that the rail transit stops due to the failure of the traction substation is avoided, and a bilateral power supply mode is adopted on a positive line.

At present, a bilateral power supply mode of a track positive line contact net is that an isolation disconnecting link is respectively arranged on each power supply arm of each station, and a cross-region isolation switch is arranged above an electric section between two power supply arms. When the rail transit normally operates, the isolating switch on the power supply arm is in a switching-on state and is used for transmitting power to the metro vehicle, and the cross-region isolating switch is in a switching-off state. When one power supply arm fails, the cross-region isolating switch is switched on, and the power supply is carried out on the local area by the substation of the adjacent station, namely, bilateral power supply is carried out. Generally, three isolation disconnecting switches on site are all installed on the wall of a tunnel, and the isolation disconnecting switches are controlled in a vehicle control room in a cable pulling mode. Because of no visual video acquisition and transmission system, the video picture of the opening and closing of the isolation switch cannot be transmitted to a remote control room in real time, and remote operation visualization cannot be realized.

Disclosure of Invention

The embodiment of the utility model provides an isolation grounding system for rail transit, which can transmit a video picture of switching on and off of an isolation grounding device to a remote car control room in real time.

The embodiment of the utility model provides an isolated grounding system for rail traffic, which comprises the following components: the isolation grounding device is arranged in a track area of the track traffic and comprises a first isolation grounding disconnecting link, a second isolation grounding disconnecting link, a cross-region load switch and a controller, wherein the first isolation grounding disconnecting link, the cross-region load switch and the second isolation grounding disconnecting link are arranged in parallel at intervals in sequence, the cross-region load switch comprises a moving contact, an arc extinguishing device and a first camera device, the first camera device is arranged outside the arc extinguishing device and is in communication connection with the controller, and the first camera device is used for collecting image information of a contact fracture of the moving contact; the video streaming media server is electrically connected with the controller; and the system host is arranged in the car control room, is electrically connected with the video streaming media server, is provided with a display screen and is used for displaying the image information acquired by the first camera device.

According to the foregoing embodiment of the present utility model, the load-across switch further includes a fixed contact, the moving contact has an on position to be connected to the fixed contact, and the first image pickup device is further configured to collect image information of the on position of the moving contact.

According to any of the foregoing embodiments of the present utility model, the first isolated ground blade includes a second camera device, the second isolated ground blade includes a third camera device, the second camera device is configured to collect image information of opening and closing of the first isolated ground blade, and the third camera device is configured to collect image information of opening and closing of the second isolated ground blade.

According to any one of the foregoing embodiments of the present utility model, the first image capturing device, the second image capturing device, and the third image capturing device are each provided with address information, and the system host is provided with preset point information of the first image capturing device, the second image capturing device, and the third image capturing device, the preset point information of the first image capturing device, the second image capturing device, and the third image capturing device corresponding to the address information of the first image capturing device, the second image capturing device, and the third image capturing device, respectively.

According to any of the preceding embodiments of the utility model, the load-over switch further comprises a spring-operated device provided with an output shaft which is in driving connection with the moving contact, which is located outside the arc-extinguishing device.

According to any of the foregoing embodiments of the present utility model, the arc extinguishing device includes an arc extinguishing chamber and an arc extinguishing rod housed in the arc extinguishing chamber, the arc extinguishing rod being drivingly connected to the output shaft.

According to any of the foregoing embodiments of the present utility model, the isolated grounding device further includes a cabinet body, a first control component, a second control component, and a third control component, where the cabinet body includes a plurality of compartments, the plurality of compartments includes a first compartment, a second compartment, and a third compartment that are sequentially arranged, each compartment includes a switch chamber and a control chamber that are disposed in an upper-lower layered manner, the first isolated grounding switch, the load-over switch, the second isolated grounding switch are sequentially disposed in the switch chambers of the first compartment, the second compartment, and the third compartment, and the first control component, the second control component, and the third control component are sequentially disposed in the control chambers of the first compartment, the second compartment, and the third compartment.

According to any one of the foregoing embodiments of the present utility model, the first control assembly, the second control assembly, and the third control assembly respectively include an operation panel including an indicator light and an operation button, and each switch chamber has a switch chamber door disposed on the same side as the operation panel.

According to any of the preceding embodiments of the utility model, each switch chamber door comprises a first viewing window, the first viewing window of the switch chamber door of the second compartment corresponding to the contact break and on position positions of the moving contact. According to any of the foregoing embodiments of the present utility model, each compartment has an outer cabinet door disposed on a front side of the cabinet body, the outer cabinet door further including a second observation window and a third observation window, the second observation window corresponding to the first observation window in position, the third observation window corresponding to the operation panel in position.

The isolated grounding system of the rail transit comprises an isolated grounding device, a streaming media server and a system host. The isolated grounding device is arranged in a track area of the track traffic. The isolated grounding device comprises a first isolated grounding disconnecting link, a second isolated grounding disconnecting link, a cross-region load switch and a controller. The load-over switch comprises a moving contact, an arc extinguishing device and a first camera device. The first image pickup device is mounted outside the arc extinguishing device. The first camera device can acquire image information of a contact fracture of the moving contact. The first camera device is connected with the video streaming media server through the controller. When the first cross-region load switch of the isolation grounding device performs opening and closing operation, the first camera device can acquire image information of a contact fracture of the moving contact and transmit the acquired image information of the contact fracture to a system host of a remote car control room, and an operator can see synchronous image information of the contact fracture of the moving contact acquired by the first camera device through a display screen of the system host, so that remote operation visualization of the isolation grounding device is realized.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of an isolated grounding system for rail transit according to the present utility model;

FIG. 2 is a schematic perspective view of a load switch for a crossing zone in an embodiment of an isolated grounding system for rail transit according to the present utility model;

FIG. 3 is a schematic perspective view of a structure of a portion of a cabinet in an isolated grounding device in an isolated grounding system for rail transit according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a structure of a portion of a cabinet in an isolated grounding device in an isolated grounding system for rail transit according to an embodiment of the present utility model;

FIG. 5 is a schematic perspective view of an isolated grounding system for rail transit according to an embodiment of the present utility model with an outer cabinet door opened by an isolated grounding device;

fig. 6 is a schematic perspective view of an isolated grounding device closing an outer cabinet door in an isolated grounding system for rail transit according to an embodiment of the present utility model.

Reference numerals illustrate:

1000-an isolated grounding system of rail transit;

100-isolating the grounding device; 110-a first isolated ground knife switch; 120-load-off switch; 121-a moving contact; 122-fixed contact; 123-arc extinguishing device; 124-spring operating means; 130-a second isolated ground knife switch; 140-a cabinet body; 1411-outer cabinet door; 1411 a-a second viewing window; 1411 b-a third viewing window; 141-compartment; 141 a-a first compartment; 141 b-a second compartment; 141 c-a third compartment; 142-a switching chamber; 1421-opening and closing the chamber door; 1421 a-a first viewing window; 143-a control chamber; 150 a-a first control component; 150 b-a second control assembly; 150 c-a third control assembly; 151-an operation panel;

200-a video streaming media server;

300-system host.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The embodiment of the utility model provides an isolation grounding system for rail transit, which can transmit video pictures of an on-off state of an isolation grounding device to a remote vehicle control room in real time.

Fig. 1 is a schematic perspective view of an embodiment of an isolated grounding system for rail transit according to the present utility model. As shown in fig. 1, an isolated grounding system 1000 for rail transit provided by an embodiment of the present utility model includes an isolated grounding device 100, a video streaming server 200, and a system host 300. The isolated grounding device 100 is mounted to a rail-mounted region of a rail transit. The isolated ground assembly 100 includes a first isolated ground blade 110, a second isolated ground blade 130, a load-over switch 120, and a controller. The load switch 120 includes a moving contact 121, an arc extinguishing device 123, and a first imaging device. The first image pickup device is mounted outside the arc extinguishing device 123. The first camera device is in communication connection with the controller. The first image capturing device is used for capturing an image of the contact fracture of the moving contact 121. The video streaming server 200 is electrically connected to the controller. The system host 300 is arranged in the car control room, the system host 300 is electrically connected with the video streaming media server 200, and the system host 300 is provided with a display screen which is used for displaying the image information acquired by the first camera device. In this embodiment, when the first cross-zone load switch 120 of the isolated grounding device 100 performs the opening and closing operation, the first camera device may collect the image information of the contact fracture of the moving contact 121 and transmit the collected image information of the contact fracture to the system host 300 of the remote car control room through the controller and the video streaming media server 200, and an operator may see, through the display screen of the system host 300, the image information of the contact fracture of the moving contact 121 collected by the first camera device, so as to realize remote operation visualization of the isolated grounding device 100, thereby improving operation security.

It should be noted that, in the isolated grounding system 1000 of rail transit according to the embodiment of the present utility model, the isolated grounding device 100 may be one or more, which is not limited herein.

As shown in fig. 2, in some embodiments, the load switch 120 further includes a fixed contact 122, the moving contact 121 has an on position that is in contact with the fixed contact 122, and the first camera device is further configured to collect image information of the on position of the moving contact 121. In this embodiment, the first image capturing device may transmit the collected image information of the on position of the moving contact 121 of the load switch 120 to the system host 300 through the video streaming server 200, and when an operator needs to place the moving contact 121 of the load switch 120 in the on position in the car control room, the operator may check the operation condition of the moving contact 121 by checking the image information of the moving contact 121 of the load switch 120 through the display screen of the system host 300, so as to realize remote operation visualization of the load switch 120, and improve operation safety.

In some embodiments, the first isolated ground knife 110 includes a second camera device. The second isolated ground knife 130 includes a third camera device. The second camera device is used for acquiring image information of opening and closing of the first isolated grounding switch 110. The third camera device is used for acquiring image information of opening and closing of the second isolated grounding switch 130.

In this embodiment, the second image capturing device disposed on the first isolated grounding switch 110 and the third image capturing device disposed on the second isolated grounding switch 130 may transmit the captured image information of the opening and closing of the first isolated grounding switch 110 and the captured image information of the opening and closing of the second isolated grounding switch 130 to the system host 300 through the video streaming server 200. When an operator needs to perform a switch-off operation on the first isolation grounding switch 110 and the second isolation grounding switch 130 in the vehicle control room, the image information shot by the second camera device and the third camera device can be checked from the display screen of the system host 300 to observe switch-off of the first isolation grounding switch 110 and the second isolation grounding switch 130, so that remote operation visualization of the first isolation grounding switch 110 and the second isolation grounding switch 130 is realized, and operation safety is improved.

In some embodiments, the first, second, and third camera devices are each provided with address information. The system main unit 300 is provided with preset point information of the first image pickup device, the second image pickup device, and the third image pickup device. The preset point information of the first image pickup device, the second image pickup device and the third image pickup device corresponds to the address information of the first image pickup device, the second image pickup device and the third image pickup device respectively. In this embodiment, when the load switch 120 or the first isolated grounding switch 110 or the second isolated grounding switch 130 is switched on or off in the vehicle control room, the system host 300 may automatically call the corresponding image information transmitted to the system host 300 by the video streaming server 200 through the corresponding first camera device or the second camera device or the third camera device, and then the display screen of the system host 300 pops up the corresponding image information to realize video linkage. Once accidents occur, enough time is left for emergency handling of the unexpected operation, and the operation safety is improved.

As shown in fig. 2, in some embodiments, the load switch 120 further includes a latch 124, the latch 124 being provided with an output shaft. The output shaft is in driving connection with the moving contact 121, and the moving contact 121 is located outside the arc extinguishing device 123. In this embodiment, the moving contact is disposed outside the arc extinguishing chamber 123, the moving contact 121 is in driving connection with the output shaft of the spring operation device 124, and the output shaft of the spring operation device 124 drives the moving contact 121 to switch between the contact break and the contact on positions. When the movable contact 121 of the load switch 120 is in the contact broken state, a significant break can be observed, and the break is not blocked by the arc extinguishing device 123.

As shown in fig. 2, in some embodiments, the arc extinguishing device 123 includes an arc chute and an arc rod housed within the arc chute, the arc rod being drivingly connected to the output shaft. In this embodiment, the output shaft is in driving connection with the arc extinguishing rod. Both the moving contact 121 and the arc extinguishing bar are synchronously driven by the output shaft.

As shown in fig. 3, in some embodiments, the isolated grounding device 100 further includes a cabinet 140, a first control assembly 150a, a second control assembly 150b, and a third control assembly 150c. The cabinet 140 includes a plurality of compartments 141, and the plurality of compartments 141 includes a first compartment 141a, a second compartment 141b, and a third compartment 141c, which are sequentially arranged. Each compartment 141 includes a switching chamber 142 and a control chamber 143 arranged in layers up and down. The first isolated earthing switch 110, the load-shedding switch 120, and the second isolated earthing switch 130 are disposed in the switch chamber 142 of the first compartment 141a, the second compartment 141b, and the third compartment 141c in this order. The first control unit 150a, the second control unit 150b, and the third control unit 150c are disposed in the control chamber 143 of the first compartment 141a, the second compartment 141b, and the third compartment 141c in this order. In this embodiment, the switch chamber 142 and the control chamber 143 of each compartment 141 are layered up and down such that the first isolated ground knife switch 110 located in the switch chamber 142 of the first compartment 141a is not obscured by the first control assembly 150a located in the control chamber 143 of the first compartment 141 a. The load cell 120 located in the second compartment 141b switch chamber 142 is not obscured by the second control assembly 150b located in the second compartment 141b control chamber 143. The second isolated ground knife switch 130 located in the third compartment 141c switch chamber 142 is not obscured by the third control assembly 150c located in the third compartment 141c control chamber 143.

As shown in fig. 4, in some embodiments, the first, second, and third control assemblies 150a, 150b, 150c each include an operation panel 151. The operation panel 151 includes an indicator lamp and operation buttons. Each of the switch chambers 142 has a switch chamber door 1421, and the switch chamber door 1421 is disposed on the same side as the operation panel 151 such that the first isolating and grounding switch 110 or the load-across switch 120 or the second isolating and grounding switch 130 located in the corresponding switch chamber 142 plays a protective role when operation is not required. In this embodiment, an operator can control the operation of the first control component 150a, the second control component 150b, or the third control component 150c by controlling the operation buttons on the operation panel 151 correspondingly provided to the first control component 150a, the second control component 150b, or the third control component 150c, and can observe the operation result through the indicator lights on the operation panel 151, thereby improving the operation safety.

As shown in fig. 5, in some embodiments, each switch chamber door 1421 includes a first viewing window 1421a, the first viewing window 1421a of the switch chamber door 1421 of the second compartment 141b corresponding to the contact break position of the moving contact 121. In the present embodiment, the contact fracture of the moving contact of the zone-crossing load switch 120 in the second switch chamber 142 is observed through the first observation window 1421a of the switch chamber door 1421 of the second compartment 141 b. In some alternative embodiments, the opening and closing state of the first isolated grounding switch 110 in the first switch chamber 142 may also be observed through the first observation window 1421a of the switch chamber door 1421 of the first compartment 141 a. The first observation window 1421a of the switch chamber door 1421 of the third compartment 141c observes the opening/closing state of the second isolated earthing knife-switch 130 in the third switch chamber 142. When an on-site operator or through controlling the operation buttons on the operation panel 151 correspondingly arranged on the first control component 150a, the second control component 150b and the third control component 150c, respectively, the operation control is performed on the cross-region load switch 120 electrically connected with the first isolation grounding switch 110 or the second control component 150b or the second isolation grounding switch 130 electrically connected with the third control component 150c and the first control component 150a, not only the operation result can be observed from the indication lamp on the operation panel 151, but also the state of the first isolation grounding switch 110 or the state of the cross-region load switch 120 or the state of the second isolation grounding switch 130 corresponding to the first observation window 1421a arranged on each switch chamber door 1421 can be intuitively observed, so that the accurate operation is ensured, and the operation safety is improved. Meanwhile, a remote operator or an on-site inspector can observe the state of the first isolated grounding switch 110 or the state of the cross-zone load switch 120 or the state of the second isolated grounding switch 130 through the operation panel 151 or the first observation window 1421a, so that the operation is ensured to be correct, the operation safety is improved, and the operation safety is improved.

As shown in fig. 6, in some embodiments, each compartment 141 has an outer cabinet door 1411, the outer cabinet door 1411 being disposed on a front side of the cabinet body 140. The outer cabinet door 1411 further includes a second viewing window 1411a and a third viewing window 1411b, the second viewing window 1411a corresponding to the first viewing window 1421a in position, and the third viewing window 1411b corresponding to the operation panel 151 in position. In this embodiment, the outer cabinet door 1411 provided in the first compartment 141a protects the operation panel 151 and the first isolated earthing switch 110 when the first isolated earthing device 100 in the first compartment 141a switch chamber 142 does not require the control panel in the first compartment 141a control chamber 143 to perform operation control. The outer cabinet door 1411 provided in the second compartment 141b protects the operation panel 151 and the load-across switch 120 when the load-across switch 120 in the first compartment 141a is opened and closed in the chamber 142 without the need for the operation control by the control panel in the control chamber 143 of the second compartment 141 b. The outer cabinet door 1411 provided in the third compartment 141c protects the operation panel 151 and the second isolated earthing switch 130 when the second isolated earthing device 100 in the third compartment 141c opening and closing chamber 142 does not require the control panel in the third compartment 141c control chamber 143 to perform operation control. Meanwhile, the on-site inspector or the remote worker can intuitively observe the opening and closing state of the corresponding first isolation grounding switch 110 or the opening and closing state of the cross-region load switch 120 or the opening and closing state of the second isolation grounding switch 130 of the operation panel 151 in the compartment 141 and the switch chamber 142 in the compartment 141 through the second observation window 1411a and the third observation window 1411b arranged on the outer cabinet door 1411 of each compartment 141, so that the operation is accurate and in place, and the operation safety is improved.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the description and drawings or as applied directly or indirectly to other related art.

Claims (10)

1. An isolated ground system for rail transit, comprising:

the isolation grounding device is arranged in a track area of the track traffic and comprises a first isolation grounding disconnecting link, a cross-zone load switch, a second isolation grounding disconnecting link and a controller, wherein the cross-zone load switch comprises a moving contact, an arc extinguishing device and a first camera device, the first camera device is arranged outside the arc extinguishing device and is in communication connection with the controller, and the first camera device is used for collecting image information of a contact fracture of the moving contact;

the video streaming media server is electrically connected with the controller; and

the system host is arranged in the car control room and is electrically connected with the video streaming media server, and is provided with a display screen which is used for displaying the image information acquired by the first camera device.

2. The isolated ground system of rail transit of claim 1, wherein said load-over switch further comprises a stationary contact, said moving contact having an on position in contact with said stationary contact, said first camera means further for acquiring image information of said on position of said moving contact.

3. The isolated earth system of rail transit of claim 1, wherein the first isolated earth blade comprises a second camera device, the second isolated earth blade comprises a third camera device, the second camera device is capable of acquiring image information of opening and closing of the first isolated earth blade, and the third camera device is capable of acquiring image information of opening and closing of the second isolated earth blade.

4. The isolated earth system of claim 3, wherein the first camera device, the second camera device, and the third camera device are each provided with address information, the system host is provided with preset point information of the first camera device, the second camera device, and the third camera device, and the preset point information of the first camera device, the second camera device, and the third camera device corresponds to the address information of the first camera device, the second camera device, and the third camera device, respectively.

5. The isolated earth system of claim 4, wherein the load-over switch further comprises a spring operator, the spring operator having an output shaft, the output shaft being drivingly connected to the moving contact, the moving contact being external to the arc suppressing device.

6. The isolated earth system of claim 5, wherein the arc suppressing device comprises an arc chute and an arc suppressing rod housed within the arc chute, the arc suppressing rod being drivingly connected to the output shaft.

7. The isolated earth system of any of claims 1-6, wherein the isolated earth apparatus further comprises a cabinet, a first control assembly, a second control assembly, and a third control assembly, the cabinet comprising a plurality of compartments, the plurality of compartments comprising a first compartment, a second compartment, and a third compartment arranged in sequence, each of the compartments comprising a switch chamber and a control chamber arranged in an upper-lower hierarchy, the first isolated earth blade, the load-over switch, the second isolated earth blade being disposed in sequence in the switch chambers of the first compartment, the second compartment, the third compartment, the first control assembly, the second control assembly, the third control assembly being disposed in sequence in the control chambers of the first compartment, the second compartment, the third compartment.

8. The isolated earth system of claim 7, wherein the first control assembly, the second control assembly, and the third control assembly each comprise an operating panel comprising an indicator light and an operating button, each of the switch chambers having a switch chamber door disposed on a same side as the operating panel.

9. The isolated earth system of claim 8, wherein each of the switch chamber doors includes a first viewing window, the first viewing window of the switch chamber door of the second compartment corresponding to a location of a contact break of the moving contact.

10. The isolated earth system of claim 9, wherein each of the compartments has an outer cabinet door disposed at a front side of the cabinet body, the outer cabinet door further comprising a second viewing window and a third viewing window, the second viewing window corresponding to the first viewing window position and the third viewing window corresponding to the operating panel position.

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