Urban rail transit three-station integrated isolation grounding device

Abstract

The invention discloses a three-station integrated isolation grounding device for urban rail transit, and belongs to the technical field of visual grounding devices. The device comprises an integrated isolation grounding switch QS, a controller KZQ and a switch control loop. The integrated isolation grounding switch QS is connected with the switch control loop, and the switch control loop is controlled by the controller KZQ; one end of the integrated isolation grounding switch QS is connected with the in-garage contact net, and a motor electrified disconnecting link of the integrated isolation grounding switch QS is arranged between the out-garage contact net and the walking rail. According to the invention, the grounding switch and the networking isolation switch are combined into two positions and one position, the condition that the grounding switch and the grounding switch are simultaneously closed is eliminated from a mechanical structure, and the newly designed switches are arranged in the same switch cabinet, so that the operation process is simplified, the installation space is reduced, and the phenomenon that the networking isolation switch and the grounding switch are mistakenly closed is thoroughly prevented.

Description

Technical Field

[0001] The present invention belongs to the technical field of visualized grounding devices, and in particular relates to a three-station integrated isolation grounding device for urban rail transit. Background Art

[0002] Urban rail transit is the most important part of urban transportation construction and one of the most effective ways to solve urban congestion. By the end of 2019, a total of 40 cities across the country had opened rail transit and put it into operation, with an operating mileage of 6,730 kilometers. With the rapid increase in urban population, urban rail transit tends to start early and end late, leaving less and less time for line and equipment maintenance. How to complete vehicle maintenance safely, reliably and conveniently within a limited time is an urgent problem facing subway operating departments.

[0003] At present, the maintenance work of many subway depots (parking lots) still remains in the traditional maintenance method: first disconnect the manual disconnector of the maintenance track, and then manually test the electricity. If there is residual charge in the line, it is necessary to use a test rod to slowly discharge the residual charge. After the discharge is completed, it is necessary to verify that there is no electricity before the ground wire can be hung. The entire power outage process takes about half an hour, and the cumbersome power outage process is time-consuming and labor-intensive.

[0004] In recent years, some subway depots have introduced a visual grounding device. The device can automatically complete electrical testing, discharge and grounding, and can remotely view the video image of the grounding knife switch, basically realizing the automation of grounding operations. However, since the grounding device and the online disconnector belong to two different devices and are installed at a long distance, the operation of the online disconnector still requires manual operation on site, which is also time-consuming. Some manufacturers have also added an operating terminal next to the grounding device to operate the electric disconnector and the grounding device, realizing the centralized operation of the single-track disconnector and the grounding device. However, since multiple devices need to be installed, the system is very complicated and occupies more space in the depot.

[0005] In summary, the existing subway depot power supply and grounding equipment still have the following deficiencies:

[0006] 1) The grounding device and the online disconnector in the depot belong to different equipment. When shutting off the power, both equipment need to be operated at the same time. The operation process is demanding and time-consuming.

[0007] 2) The grounding device and the online disconnector in the depot belong to different equipment and are installed separately, which requires more installation space.

[0008] 3) The online isolating switch in the vehicle depot is generally a manual isolating switch. The online isolating switch can better lock the closing operation of the grounding device by using the internal contact position, but the grounding device cannot reliably lock the closing operation of the online isolating switch. There is a risk of closing the online isolating switch when the grounding device is closed. Summary of the invention

[0009] The purpose of the present invention is to provide a three-station integrated isolation grounding device for urban rail transit in view of the above-mentioned deficiencies in the prior art, so as to solve the above-mentioned problems.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] An urban rail transit three-station integrated isolation grounding device, comprising an integrated isolation grounding switch QS, a controller KZQ and a switch control circuit; the integrated isolation grounding switch QS is connected to the switch control circuit, and the switch control circuit is controlled by the controller KZQ;

[0012] One end of the integrated isolating and grounding switch QS is connected to the contact network inside the depot, and the motor energized knife switch of the integrated isolating and grounding switch QS is arranged between the contact network outside the depot and the running rail; a DC voltage transmitter TV1 is arranged between the contact network outside the depot and the running rail; a DC voltage transmitter TV2, a DC voltage transmitter TV3 and a residual pressure relief device ZFD are arranged in parallel between the contact network inside the depot and the running rail; a DC circuit transmitter TA is installed on the contact network inside the depot.

[0013] Furthermore, the controller KZQ is connected to the DC voltage transmitter TV1, the DC voltage transmitter TV2, the DC voltage transmitter TV3, the DC circuit transmitter TA, the touch display TPC and the speaker respectively.

[0014] Furthermore, the switch control circuit includes an isolating switch opening control circuit, an isolating switch closing control circuit, an earthing switch opening control circuit and an earthing switch closing control circuit; the isolating switch opening control circuit, the isolating switch closing control circuit, the earthing switch opening control circuit and the earthing switch closing control circuit respectively drive the motor energized knife switch movement of the integrated isolating earthing switch QS.

[0015] Furthermore, the disconnector opening control circuit includes an disconnector opening button SBF1, an opening contactor KM2 and a travel switch 2XK;

[0016] The port X2 of the disconnector opening button SBF1 is connected to the contacts 13-14 of the travel switch 2XK, and the ports 23-24 of the disconnector opening button SBF1 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK11 of the controller KZQ; the contact 13 of the opening contactor KM2 is connected to DC24V+, and the contact 14 of the opening contactor KM2 is sequentially connected to the contacts 21-22 of the opening contactor KM1, the opening contactor KM2 coil, the contacts 56-55 of the opening contactor KM2 and the contacts 11-12 of the travel switch 2XK;

[0017] The two ends of the YK4A-YK4B remote control outlet of the controller KZQ are respectively connected to the ports 9-10 of the transfer switch SA1 and the contacts 21-22 of the opening contactor KM1.

[0018] Furthermore, the isolating switch closing control circuit includes an isolating switch closing button SBH1, an opening contactor KM1 and a travel switch 1XK;

[0019] The port X2 of the isolating switch closing button SBH1 is connected to the contacts 13-14 of the travel switch 1XK, and the ports 23-24 of the isolating switch closing button SBH1 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK10 of the controller KZQ; the contact 13 of the opening contactor KM1 is connected to DC24V+, and the contact 14 of the opening contactor KM1 is sequentially connected to the contacts 21-22 of the opening contactor KM2, the opening contactor KM1 coil, the contacts 56-55 of the opening contactor KM1 and the contacts 11-12 of the travel switch 1XK;

[0020] The two ends of the YK3A-YK3B remote control outlet of the controller KZQ are respectively connected to the ports 9-10 of the transfer switch SA1 and the contacts 21-22 of the opening contactor KM1.

[0021] Furthermore, the grounding switch opening control circuit includes a grounding switch opening button SBF2, an opening contactor KM4 and a travel switch 2XK;

[0022] The port X2 of the grounding switch opening button SBF2 is connected to the contacts 13-14 of the travel switch 1XK, and the ports 23-24 of the grounding switch opening button SBF2 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK9 of the controller KZQ; the contact 13 of the opening contactor KM4 is connected to the port 4 of the transfer switch SA2, and the contact 14 of the opening contactor KM4 is sequentially connected to the contacts 21-22 of the opening contactor KM3, the opening contactor KM4 coil, the contacts 56-55 of the opening contactor KM4 and the contacts 11-12 of the travel switch 2XK;

[0023] The two ends of the YK2A-YK2B remote control outlet of the controller KZQ are respectively connected to the ports 3-4 of the transfer switch SA2 and the contacts 21-22 of the opening contactor KM3.

[0024] Furthermore, the grounding switch closing control circuit includes a grounding switch closing button SBH2, an opening contactor KM3 and a travel switch 3XK;

[0025] The port X2 of the grounding switch closing button SBH2 is connected to the contacts 13-14 of the travel switch 3XK, and the ports 23-24 of the grounding switch closing button SBH2 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK8 of the controller KZQ; the contact 13 of the opening contactor KM3 is connected to the port 4 of the transfer switch SA2, and the contact 14 of the opening contactor KM3 is sequentially connected to the contacts 21-22 of the opening contactor KM4, the opening contactor KM3 coil, the contacts 56-55 of the opening contactor KM3 and the contacts 11-12 of the travel switch 3XK;

[0026] The two ends of the YK1A-YK1B remote control outlet of the controller KZQ are respectively connected to the ports 3-4 of the transfer switch SA2 and the contacts 21-22 of the opening contactor KM4.

[0027] Further, the pins YX1, YX2, YX3 and YX4 of the controller KZQ are connected to the contacts 23-24 of the travel switch 3XK, the contacts 21-22 of the travel switch 3XK, the contacts 23-24 of the travel switch 1XK and the contacts 23-24 of the travel switch 2XK respectively;

[0028] Pin YX15 of the controller KZQ is connected to port 23-24 of the powered button SBY; pins YX16, YX17 and YX18 of the controller KZQ are respectively connected to ports 11-12, 5-6 and 1-2 of the switching switch SA1; pins YX19 and YX20 of the controller KZQ are respectively connected to ports 7-8 and 1-2 of the switching switch SA2.

[0029] The three-station integrated isolation grounding device for urban rail transit provided by the present invention has the following beneficial effects:

[0030] 1. The present invention combines the grounding switch and the online isolating switch into one, thereby eliminating the situation where the isolating switch and the grounding switch are closed at the same time from the perspective of mechanical structure, and the newly designed switch is arranged in the same switch cabinet to simplify the operation process, reduce the installation space, and completely prevent the phenomenon of mistakenly closing the online isolating switch and the grounding switch.

[0031] 2. The present invention combines the isolating switch and the grounding switch into a switch cabinet. The switch has only three positions: isolating switch closed position, isolation position (middle position), and grounding switch closed position. The positions do not interfere with each other, which can effectively prevent the occurrence of power transmission with ground wire.

[0032] 3. The device of the present invention sets a current transformer in the contact network feeder loop in the depot to monitor the loop current in real time, which can effectively prevent the disconnector from operating with load. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is the main wiring diagram of the three-station integrated isolation grounding device for urban rail transit of the present invention.

[0034] Figure 2 This is the analog quantity and human-machine interface wiring diagram of the three-station integrated isolation grounding device for urban rail transit of the present invention.

[0035] Figure 3 This is the switch control loop of the present invention.

[0036] Figure 4 This is the motor circuit of the integrated isolating grounding switch QS of the present invention.

[0037] Figure 5 This is the first remote signaling circuit of the present invention.

[0038] Figure 6 This is the second remote signaling circuit of the present invention.

[0039] Figure 7 This is the first remote control circuit of the present invention.

[0040] Figure 8 This is the second remote control loop of the present invention.

[0041] Fig. 9 This is a control flow chart of the disconnecting operation of the isolating switch of the present invention.

[0042] Fig.10 This is a control flow chart of the closing operation of the isolating switch of the present invention.

[0043] Fig.11 This is a flow chart of the closing operation control of the grounding switch of the present invention.

[0044] Fig.12 This is a flow chart of the grounding switch opening operation control of the present invention.

[0045] Fig.13 This is a diagram showing that the integrated isolating and grounding switch QS of the present invention is in the isolating and closing position.

[0046] Fig.14 The integrated isolating grounding switch QS of the present invention is in the isolating position.

[0047] Fig.15 The integrated isolating grounding switch QS of the present invention is in the grounding position.

[0048] Fig.16 This is an appearance diagram of the three-station integrated isolation grounding device for urban rail transit of the present invention.

[0049] Fig.17 The mechanical structure of the integrated isolating and grounding switch QS of the present invention is as follows: Figure 1 .

[0050] Fig.18 The mechanical structure of the integrated isolating and grounding switch QS of the present invention is as follows: Figure 2 .

[0051] Among them, 1. Grounding terminal; 2. Live knife switch; 3. Incoming line terminal outside the warehouse; 4. Feeder terminal inside the warehouse; 5. Switch mechanism; 6. Travel switch 2XK; 7. Cam; 8. Drive shaft; 9. Travel switch 1XK; 10. Travel switch 3XK; 11. Reducer. DETAILED DESCRIPTION

[0052] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0053] Example 1

[0054] The present embodiment is a three-station integrated isolation grounding device for urban rail transit. The entire device is integrated in Fig.16 In the switch cabinet shown, the switch cabinet includes an integrated isolating and grounding switch QS, a controller KZQ and a switch control circuit; the integrated isolating and grounding switch QS is connected to the switch control circuit and is controlled by the switch control circuit, and the switch control circuit is connected to the controller KZQ and is controlled by the controller KZQ.

[0055] Specifically, refer to Figure 1 One end of the integrated isolating and grounding switch QS of this embodiment is connected to the contact network inside the reservoir (the feeder terminal 4 inside the reservoir), and the motor energized knife switch 2 of the integrated isolating and grounding switch QS is arranged between the contact network outside the reservoir (the feeder terminal 3 outside the reservoir) and the running rail (the grounding terminal 1).

[0056] refer to Figure 2A DC voltage transmitter TV1 is installed between the contact network outside the depot and the running rail, a DC voltage transmitter TV2, a DC voltage transmitter TV3 and a residual pressure relief device ZFD are installed in parallel between the contact network inside the depot and the running rail, and a DC circuit transmitter TA is installed on the contact network inside the depot. The controller KZQ is connected to the DC voltage transmitter TV1, the DC voltage transmitter TV2, the DC voltage transmitter TV3, the DC circuit transmitter TA, the touch display TPC and the speaker respectively.

[0057] The working principle of the charged state and current detection of the device in this embodiment is as follows:

[0058] DC voltage transmitters TV1, TV2 and TV3 convert DC0~2000V voltage signals into 4~20mA current signals, and send them to controller KZQ for collection and calculation, and then display the calculated measured values ​​in real time on the touch display TPC. At the same time, controller KZQ compares and judges the live state of the contact network in real time according to the set threshold, and drives the live indicator HRD1 at the isolated feeder end and the live indicator HRD2 at the isolated incoming line end according to the comparison and judgment results, to display the live state of the contact network in real time.

[0059] The DC circuit transmitter TA converts the DC0~4000A current signal into a 4~20mA current signal, sends it to the controller KZQ for collection and calculation, and then displays the calculated measurement value in real time on the touch display TPC. At the same time, the controller KZQ performs threshold judgment to determine whether the contact network in the depot is loaded.

[0060] As a preferred embodiment of this embodiment, refer to Figure 3 The switch control circuit is arranged in the switch mechanism 5, which includes an isolating switch opening control circuit, an isolating switch closing control circuit, a grounding switch opening control circuit and a grounding switch closing control circuit; the isolating switch opening control circuit, the isolating switch closing control circuit, the grounding switch opening control circuit and the grounding switch closing control circuit respectively drive the motor energized knife switch 2 of the integrated isolating grounding switch QS to move.

[0061] Specifically, the disconnect switch opening control circuit of this embodiment includes an disconnect switch opening button SBF1, a disconnect contactor KM2 and a travel switch 2XK;

[0062] refer to Figure 3 to Figure 8, port X2 of the disconnect switch opening button SBF1 is connected to the contact 13-14 of the travel switch 2XK, port 23-24 of the disconnect switch opening button SBF1 is respectively connected to port 8 of the transfer switch SA1 and pin YK11 of the controller KZQ, contact 13 of the opening contactor KM2 is connected to DC24V+, contact 14 of the opening contactor KM2 is sequentially connected to contacts 21-22 of the opening contactor KM1, the opening contactor KM2 coil, contacts 56-55 of the opening contactor KM2 and contacts 11-12 of the travel switch 2XK;

[0063] The two ends of the YK4A-YK4B remote control outlet of the controller KZQ are respectively connected to the ports 9-10 of the transfer switch SA1 and the contacts 21-22 of the opening contactor KM1.

[0064] refer to Fig. 9 The working principle of the device of this embodiment using the isolating switch opening control circuit to perform the isolating opening operation is as follows:

[0065] Make sure that the position contacts of the travel switch 1XK are in the closed state, the isolating switch closing button SBH1 is red, the isolating switch opening button SBF1 is green, the operation mode conversion switch SA1 is in the "local electric" position, and the enabling mode conversion switch SA2 is in the "release" position. Press the isolating switch opening button SBF1, and the controller KZQ collects the button signal. After logical operation, it closes the YK4A-YK4B remote control outlet, connects the isolating switch opening control circuit, and the opening contactor KM2 is actuated. At the same time, the KM2 auxiliary contacts 13-14 are closed to maintain the opening control process, and the motor-powered knife switch 2 of the integrated isolating grounding switch QS is driven to move to the isolated position of the integrated switch until the integrated isolating grounding switch QS moves into place. At the same time, through the mechanical cam 7 structure, the contacts 11-12 of the isolating switch travel switch 2XK are pushed open, the isolating switch opening control circuit is disconnected, and the isolation and opening operation of the integrated isolating grounding device is ended.

[0066] refer to Figure 3 to Figure 8 , the isolating switch closing control circuit of this embodiment includes an isolating switch closing button SBH1, an opening contactor KM1 and a travel switch 1XK;

[0067] The port X2 of the isolating switch closing button SBH1 is connected to the contact 13-14 of the travel switch 1XK, and the port 23-24 of the isolating switch closing button SBH1 is respectively connected to the port 8 of the transfer switch SA1 and the pin YK10 of the controller KZQ; the contact 13 of the opening contactor KM1 is connected to DC24V+, and the contact 14 of the opening contactor KM1 is sequentially connected to the contacts 21-22 of the opening contactor KM2, the opening contactor KM1 coil, the contacts 56-55 of the opening contactor KM1 and the contacts 11-12 of the travel switch 1XK;

[0068] The two ends of the YK3A-YK3B remote control outlet of the controller KZQ are respectively connected to the ports 9-10 of the transfer switch SA1 and the contacts 21-22 of the opening contactor KM1.

[0069] refer to Fig.10 The working principle of the device in this embodiment using the isolating switch closing control circuit to perform the isolating and opening operation is as follows:

[0070] Determine that the position contacts of the travel switch 2XK are in the closed state, the isolating switch closing button SBH1 is green, the isolating switch opening button SBF1 is red, the operation mode conversion switch SA1 is in the "local electric" position, and the enabling mode conversion switch SA2 is in the "release" position. Press the isolating switch closing button SBH1, the controller KZQ collects the button signal, and detects the DC circuit transmitter TA current at the same time. After logical operation, it is determined that the incoming contact network is unloaded, and the YK3A-YK3B remote control outlet is closed, the isolating switch closing control circuit is connected, and the opening contactor KM1 is actuated. At the same time, the KM1 auxiliary contacts 13-14 are closed to maintain the opening control process, and the motor-powered knife switch 2 of the integrated isolating grounding switch QS is driven to move to the integrated switch isolation closing position until the integrated isolating grounding switch QS moves into place. Through the mechanical cam 7 structure, the contacts 11-12 of the isolating switch travel switch 1XK are pushed open, the isolating switch closing control circuit is disconnected, and the isolation closing operation of the integrated isolating grounding device is ended.

[0071] refer to Figure 3 to Figure 8 The grounding switch opening control circuit of this embodiment includes a grounding switch opening button SBF2, an opening contactor KM4 and a travel switch 2XK;

[0072] Port X2 of the grounding switch opening button SBF2 is connected to contacts 13-14 of the travel switch 1XK, ports 23-24 of the grounding switch opening button SBF2 are respectively connected to port 8 of the transfer switch SA1 and pin YK9 of the controller KZQ, contact 13 of the opening contactor KM4 is connected to port 4 of the transfer switch SA2, contact 14 of the opening contactor KM4 is sequentially connected to contacts 21-22 of the opening contactor KM3, the opening contactor KM4 coil, contacts 56-55 of the opening contactor KM4 and contacts 11-12 of the travel switch 2XK;

[0073] The two ends of the YK2A-YK2B remote control outlet of the controller KZQ are respectively connected to the ports 3-4 of the transfer switch SA2 and the contacts 21-22 of the opening contactor KM3.

[0074] refer to Fig.12 The working principle of the device using the grounding switch opening control circuit to perform grounding opening operation is as follows:

[0075] Make sure that the position contacts of the travel switch 2XK are in the closed state, the grounding switch closing button SBH2 is red, the grounding switch opening button SBF2 is green, the operation mode conversion switch SA1 is in the "local electric" position, and the enabling mode conversion switch SA2 is in the "release" position. Press the grounding switch opening button SBF2, and the controller KZQ collects the button signal. After logical operation, it closes the YK2A-YK2B remote control outlet, connects the grounding switch opening control circuit, and the opening contactor KM4 is actuated. At the same time, the KM4 auxiliary contacts 13-14 are closed to maintain the opening control process, and the QS motor energized knife switch 2 is driven to move to the integrated switch isolation position until the integrated isolation grounding switch QS moves into place. Through the mechanical cam 7 structure, the contacts 11-12 of the travel switch 2XK are pushed open, the grounding switch opening control circuit is disconnected, and the grounding opening operation of the integrated isolation grounding device is ended.

[0076] refer to Figure 3 to Figure 8 , the grounding switch closing control circuit of the device in this embodiment includes a grounding switch closing button SBH2, a trip contactor KM3 and a travel switch 3XK;

[0077] Port X2 of the grounding switch closing button SBH2 is connected to contacts 13-14 of the travel switch 3XK, and ports 23-24 of the grounding switch closing button SBH2 are respectively connected to port 8 of the transfer switch SA1 and pin YK8 of the controller KZQ; contact 13 of the opening contactor KM3 is connected to port 4 of the transfer switch SA2, and contact 14 of the opening contactor KM3 is sequentially connected to contacts 21-22 of the opening contactor KM4, the opening contactor KM3 coil, contacts 56-55 of the opening contactor KM3, and contacts 11-12 of the travel switch 3XK;

[0078] The two ends of the YK1A-YK1B remote control outlet of the controller KZQ are respectively connected to the ports 3-4 of the transfer switch SA2 and the contacts 21-22 of the opening contactor KM4.

[0079] refer to Fig.11 The working principle of the device of this embodiment using the grounding switch closing control circuit to perform grounding closing operation is:

[0080] Make sure that the contact of the travel switch 3XK position is in the closed state, the grounding switch closing button SBH2 is green, the grounding switch opening button SBF2 is red, the operation mode conversion switch SA1 is in the "local electric" position, and the enabling mode conversion switch SA2 is in the "release" position. Press the application / power test button SBY, the controller KZQ, real-time detection of the contact network voltage, and compare it with the set threshold value.

[0081] If the monitored voltage is lower than the set threshold, the controller KZQ outputs a control signal through the YK14 output, drives the energized button SBY to light green, indicating that the closing operation is allowed, and then presses the grounding switch closing button SBH2. The controller KZQ collects the button signal, and after logical operation, closes the YK1A-YK1B remote control output, connects the grounding switch closing control circuit, and the opening contactor KM3 is actuated. At the same time, the auxiliary contacts 13-14 of the opening contactor KM3 are closed to maintain the closing control process, and the motor energized knife switch 2 of the integrated isolating grounding switch QS is driven to move to the grounding position of the integrated switch until the integrated isolating grounding switch QS moves into place. Through the mechanical cam 7 structure, the contacts 11-12 of the grounding switch travel switch 3XK are pushed open, the grounding switch closing control circuit is disconnected, and the grounding closing operation of the integrated isolating grounding device is ended.

[0082] If the monitored voltage is higher than the set threshold, the controller KZQ will output a control signal through the YK8 output to activate the residual voltage discharge device ZFD to discharge the residual voltage of the contact network. After the specified discharge time, if the monitored voltage is lower than the set threshold, the subsequent operation of grounding closing will be started according to the above process. If the monitored voltage is still higher than the set threshold after the residual pressure is discharged, the above operation will be terminated directly and the grounding closing operation will be prohibited.

[0083] The connection between the controller KZQ and the travel switch and each button in this embodiment is specifically as follows:

[0084] Pins YX1, YX2, YX3 and YX4 of controller KZQ are connected to contacts 23-24 of travel switch 3XK, contacts 21-22 of travel switch 3XK, contacts 23-24 of travel switch 1XK and contacts 23-24 of travel switch 2XK respectively;

[0085] Pin YX15 of controller KZQ is connected to port 23-24 of the power button SBY, pin YX16, pin YX17 and pin YX18 of controller KZQ are respectively connected to port 11-12, port 5-6 and port 1-2 of switching switch SA1; pin YX19 and pin YX20 of controller KZQ are respectively connected to port 7-8 and port 1-2 of switching switch SA2.

[0086] refer to Fig.13 , Fig.14 and Fig.15 During specific operation, the integrated isolating and grounding switch QS of this embodiment moves to the isolating closing position, that is, it is connected to the contact network outside the reservoir, and moves to the isolating and grounding position, that is, it is connected to the running rail.

[0087] refer to Fig.17 and Fig.18In the mechanical movement of the integrated isolating and grounding switch QS, when the integrated isolating and grounding switch QS moves to the right position, the corresponding travel switch is pushed open by the mechanical cam 7 structure, thereby realizing the disconnection of the corresponding control circuit. The present embodiment does not limit the specific structure of the cam 7 pushing open the travel switch. The cam 7 may be driven by a motor or a transmission mechanism, or may be driven independently.

[0088] Based on this, this embodiment provides a preferred structure for the cam 7 drive, referring to Fig.17 and Fig.18 The cam 7 of this embodiment is installed on the driving shaft 8, and the driving shaft 8 is connected to the output shaft of the reducer 11 through a coupling. A connecting rod is installed on the driving shaft 8, and the other end of the connecting rod is connected to the live knife switch 2; a travel switch (including travel switch 1XK 9, travel switch 2XK 6, and travel switch 3XK 10) is respectively arranged at the left position, the lower position and the right position of the cam 7; during specific operation, the reducer 11 (motor) rotates to drive the connecting rod to move through the driving shaft 8, thereby realizing the movement of the live knife switch 2 to the isolation position, the isolation middle position and the grounding position. At the same time, the driving shaft 8 drives the cam 7 at the side end to move, thereby pushing open the corresponding travel switch, thereby disconnecting the corresponding control circuit.

[0089] As a preferred embodiment of this embodiment, Figure 4 As shown, the motor of this embodiment is a reducer 11, which is controlled by a switch control circuit and specifically controlled by opening contactors KM1, KM2 and KM3. The corresponding contact control is shown in the figure, so the specific control principle will not be repeated.

[0090] The status display corresponding to the device in this embodiment is as follows:

[0091] Touch screen TPC: Displays the contact network voltage detection value, the status of each remote signal, the setting value of each parameter, etc.;

[0092] HRD1: Indicates the energized state of the isolated feeder end, red is energized, green is not energized

[0093] HRD2: Indicates the live state of the incoming line, red for live, green for dead

[0094] HRE: Equipment warning light;

[0095] SBY: Power button, application / power test permission indicator light, lights green when there is no power, allowing the integrated device to ground and close the switch;

[0096] HRP: Sound and light alarm light. When the integrated switch is energized, open the high voltage chamber and the sound and light alarm will flash.

[0097] SBH1: The disconnector is displayed in closed position, and the closed position is displayed in red;

[0098] SBF1: Disconnector position display, open switch is green;

[0099] SBH2: The closed position of the grounding switch is displayed, and the closed position is displayed in red;

[0100] SBF2: The grounding switch is displayed in different positions, and the open position is displayed in green;

[0101] The main electrical component models of this embodiment are as follows:

[0102] Fuse device ZRD1ZRD2: HY-ZRD01

[0103] DC voltage transmitter TV1TV2TV3: HY-SYB01A / 4

[0104] Residual pressure relief device ZFD: HY-ZFD01

[0105] Integrated isolating and grounding switch QS: JN-1.5

[0106] DC circuit transmitter TA: CHZ-3000Y1 / A1

[0107] Controller KZQ: HY-WCK02

[0108] Touch screen TPC: DMT80600T080_18WT

[0109] Speaker HAU: 3.6Ω, 3.5W

[0110] Travel switch XK: SK-IIB

[0111] DC contactor KM1KM2KM3KM4: LC1-D09BDC+LADT2

[0112] Travel switch 1XK 2XK 3XK: SK-IIB

[0113] Switch SA1: LW39-16C-9GC-233X / 4

[0114] Transfer switch SA2: LW39-16C-9OB-33X3P

[0115] Illuminated push button SBH1SBH2: LA39-B2-10D / r23

[0116] Illuminated push button SBF1SBF2; LA39-B2-10D / g23

[0117] Air switch QF1: iC65N-DC-2P C6A+SD

[0118] Intermediate relay YKB: NR2ELD-D220

[0119] Intermediate relay ZJ1: SR2HLD-D24

[0120] Indicator lamp HRD1HRD2:AD16-22D / rg23

[0121] Indicator lamp HRE: AD16-22D / y23

[0122] Power button SBY: LA39-B2-10D / g23

[0123] Indicator lamp HRP:AD16-22SM / r23

[0124] Although the specific implementation of the invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A three-station integrated isolation grounding device for urban rail transit, characterized in that: It includes an integrated isolating grounding switch QS, a controller KZQ and a switch control circuit; the integrated isolating grounding switch QS is connected to the switch control circuit, and the switch control circuit is controlled by the controller KZQ; One end of the integrated isolating and grounding switch QS is connected to the contact network inside the depot, and the motor energized knife switch of the integrated isolating and grounding switch QS is arranged between the contact network outside the depot and the running rail; a DC voltage transmitter TV1 is arranged between the contact network outside the depot and the running rail; a DC voltage transmitter TV2, a DC voltage transmitter TV3 and a residual pressure relief device ZFD are arranged in parallel between the contact network inside the depot and the running rail; a DC circuit transmitter TA is installed on the contact network inside the depot.

2. The three-station integrated isolation grounding device for urban rail transit according to claim 1 is characterized in that: The controller KZQ is connected to the DC voltage transmitter TV1, the DC voltage transmitter TV2, the DC voltage transmitter TV3, the DC circuit transmitter TA, the touch display TPC and the speaker respectively.

3. The three-station integrated isolation grounding device for urban rail transit according to claim 1 is characterized in that: The switch control circuit includes an isolating switch opening control circuit, an isolating switch closing control circuit, an earthing switch opening control circuit and an earthing switch closing control circuit; the isolating switch opening control circuit, the isolating switch closing control circuit, the earthing switch opening control circuit and the earthing switch closing control circuit respectively drive the motor energized knife switch movement of the integrated isolating earthing switch QS.

4. The three-station integrated isolation grounding device for urban rail transit according to claim 3 is characterized in that: The disconnect switch opening control circuit includes an disconnect switch opening button SBF1, a disconnect contactor KM2 and a travel switch 2XK; The port X2 of the disconnector opening button SBF1 is connected to the contacts 13-14 of the travel switch 2XK, and the ports 23-24 of the disconnector opening button SBF1 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK11 of the controller KZQ; the contact 13 of the opening contactor KM2 is connected to DC24V+, and the contact 14 of the opening contactor KM2 is sequentially connected to the contacts 21-22 of the opening contactor KM1, the opening contactor KM2 coil, the contacts 56-55 of the opening contactor KM2 and the contacts 11-12 of the travel switch 2XK; The two ends of the YK4A-YK4B remote control outlet of the controller KZQ are respectively connected to the ports 9-10 of the transfer switch SA1 and the contacts 21-22 of the opening contactor KM1.

5. The three-station integrated isolation grounding device for urban rail transit according to claim 3 is characterized in that: The isolating switch closing control circuit includes an isolating switch closing button SBH1, an opening contactor KM1 and a travel switch 1XK; The port X2 of the isolating switch closing button SBH1 is connected to the contacts 13-14 of the travel switch 1XK, and the ports 23-24 of the isolating switch closing button SBH1 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK10 of the controller KZQ; the contact 13 of the opening contactor KM1 is connected to DC24V+, and the contact 14 of the opening contactor KM1 is sequentially connected to the contacts 21-22 of the opening contactor KM2, the opening contactor KM1 coil, the contacts 56-55 of the opening contactor KM1 and the contacts 11-12 of the travel switch 1XK; The two ends of the YK3A-YK3B remote control outlet of the controller KZQ are respectively connected to the ports 9-10 of the transfer switch SA1 and the contacts 21-22 of the opening contactor KM1.

6. The three-station integrated isolation grounding device for urban rail transit according to claim 3 is characterized in that: The grounding switch opening control circuit includes a grounding switch opening button SBF2, an opening contactor KM4 and a travel switch 2XK; The port X2 of the grounding switch opening button SBF2 is connected to the contacts 13-14 of the travel switch 1XK, and the ports 23-24 of the grounding switch opening button SBF2 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK9 of the controller KZQ; the contact 13 of the opening contactor KM4 is connected to the port 4 of the transfer switch SA2, and the contact 14 of the opening contactor KM4 is sequentially connected to the contacts 21-22 of the opening contactor KM3, the opening contactor KM4 coil, the contacts 56-55 of the opening contactor KM4 and the contacts 11-12 of the travel switch 2XK; The two ends of the YK2A-YK2B remote control outlet of the controller KZQ are respectively connected to the ports 3-4 of the transfer switch SA2 and the contacts 21-22 of the opening contactor KM3.

7. The three-station integrated isolation grounding device for urban rail transit according to claim 3 is characterized in that: The grounding switch closing control circuit includes a grounding switch closing button SBH2, an opening contactor KM3 and a travel switch 3XK; The port X2 of the grounding switch closing button SBH2 is connected to the contacts 13-14 of the travel switch 3XK, and the ports 23-24 of the grounding switch closing button SBH2 are respectively connected to the port 8 of the transfer switch SA1 and the pin YK8 of the controller KZQ; the contact 13 of the opening contactor KM3 is connected to the port 4 of the transfer switch SA2, and the contact 14 of the opening contactor KM3 is sequentially connected to the contacts 21-22 of the opening contactor KM4, the opening contactor KM3 coil, the contacts 56-55 of the opening contactor KM3 and the contacts 11-12 of the travel switch 3XK; The two ends of the YK1A-YK1B remote control outlet of the controller KZQ are respectively connected to the ports 3-4 of the transfer switch SA2 and the contacts 21-22 of the opening contactor KM4.

8. The three-station integrated isolation grounding device for urban rail transit according to claim 3 is characterized in that: The pins YX1, YX2, YX3 and YX4 of the controller KZQ are connected to the contacts 23-24 of the travel switch 3XK, the contacts 21-22 of the travel switch 3XK, the contacts 23-24 of the travel switch 1XK and the contacts 23-24 of the travel switch 2XK respectively; Pin YX15 of the controller KZQ is connected to port 23-24 of the powered button SBY; pins YX16, YX17 and YX18 of the controller KZQ are respectively connected to ports 11-12, 5-6 and 1-2 of the switching switch SA1; pins YX19 and YX20 of the controller KZQ are respectively connected to ports 7-8 and 1-2 of the switching switch SA2.

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