CN220584307U - Internet surfing isolating switch cabinet and contact net voltage display device thereof - Google Patents
Internet surfing isolating switch cabinet and contact net voltage display device thereof Download PDFInfo
- Publication number
- CN220584307U CN220584307U CN202322208654.0U CN202322208654U CN220584307U CN 220584307 U CN220584307 U CN 220584307U CN 202322208654 U CN202322208654 U CN 202322208654U CN 220584307 U CN220584307 U CN 220584307U
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- control module
- display device
- switch cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002955 isolation Methods 0.000 claims abstract description 45
- 238000012423 maintenance Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model discloses an internet-surfing isolating switch cabinet and a contact net voltage display device thereof, wherein the display device comprises a control module and a display module; the AD converter of the control module is connected with the voltage isolation transmitter in the Internet surfing isolation switch cabinet, and the digital signal input end of the control module is connected with the auxiliary contact of the isolation switch in the Internet surfing isolation switch cabinet; the output end of the control module is connected with the display module. The utility model avoids the potential safety hazard when the voltage of the contact net is smaller than the safety voltage and the isolating switch is in the closing position, and effectively avoids the safety accident caused by misoperation of the isolating switch and the direct current breaker.
Description
Technical Field
The utility model belongs to the technical field of safety detection, and particularly relates to a surfing isolating switch cabinet and a contact net voltage display device thereof.
Background
In recent years, urban rail transit rapidly develops in China, and the requirements for train overhaul safety measures are continuously improved. The overhead contact system in the train inspection warehouse is DC1500V direct current, and train maintenance staff needs to confirm whether the overhead contact system is electrified before the train is inspected, so that the life safety of the maintenance staff is directly related. Before train maintenance operation, the electrified state of the overhead contact system above the train must be determined to ensure the safety of the working environment of train maintenance staff.
The existing catenary LED electrified display device collects catenary voltage through a voltage sensor, the catenary voltage is transmitted to the device after being processed by a digital signal processing technology, the device judges whether the catenary is electrified according to an input dry contact signal, and when the input dry contact signal is in a low level (0), the catenary is in a non-electrified state; when the input dry contact signal is at a high level (1), the contact net is powered on; meanwhile, the device only displays electricity (red font) or no electricity (green font), and the voltage value of the contact net cannot be visually displayed in real time. The existing contact net LED live display device has the following problems:
(1) The disconnecting switch cannot be judged to be in the close state or the separate state when the contact network voltage is smaller than 36V: when the disconnecting switch is in the closed position and the upper direct current breaker is in the separated position, the device displays no electricity (less than 36V), and the overhaul staff has potential safety hazards in overhaul at the moment;
(2) The display error caused by the failure of the device cannot be judged: when line faults or voltage isolation transmitter faults are detected, the device displays no electricity (less than 36V), and overhaul staff have potential safety hazards during overhaul at the moment;
(3) The voltage value can not be displayed in real time and intuitively, the accuracy and the reliability are poor, and the potential safety hazard of overhaul exists.
Disclosure of Invention
The utility model aims to provide an internet-surfing isolating switch cabinet and a contact network voltage display device thereof, which are used for solving the problems that the traditional device cannot judge the state of an isolating switch when the contact network voltage is smaller than a safety voltage, cannot judge the display error caused by the failure of the device, cannot display the voltage value in real time and intuitively, and has poor accuracy and reliability.
The utility model solves the technical problems by the following technical scheme: a contact net voltage display device comprises a control module and a display module; the AD converter of the control module is connected with the voltage isolation transmitter in the Internet surfing isolation switch cabinet, and the digital signal input end of the control module is connected with the auxiliary contact of the isolation switch in the Internet surfing isolation switch cabinet; the output end of the control module is connected with the display module.
Further, the control module is connected with the display module through a parallel interface.
Further, the control module is a singlechip.
Further, the display module is an LED display module, and the LED display module comprises a driving module and an LED display screen.
Further, the device also comprises an alarm module connected with the control module. When the analog quantity signal output by the voltage isolation transmitter is smaller than 4mA, the alarm module gives an alarm to indicate the voltage isolation transmitter and/or detect line faults.
Further, the alarm module is a buzzer or an alarm indicator lamp.
Based on the same conception, the utility model also provides an internet surfing isolating switch cabinet which comprises the overhead line system voltage display device.
Advantageous effects
Compared with the prior art, the utility model has the advantages that:
the utility model utilizes the 4-20 mA analog quantity signal output by the voltage isolation transmitter in the Internet surfing isolation switch cabinet to detect the real-time voltage value of the contact net, detects the state of the isolation switch through the opening and closing state of the auxiliary contact of the isolation switch in the Internet surfing isolation switch cabinet, and displays the voltage state and the state of the isolation switch of the contact net on the display module, thereby avoiding the potential safety hazard when the voltage of the contact net is less than the safe voltage and the isolation switch is in the closing position, and effectively avoiding the safety accident caused by misoperation of the isolation switch and the direct current breaker;
the display module adopts different font colors to represent different contact network voltage states and isolating switch states, so that the display result is more visual and reliable, and the safety accident caused by overhaul errors is effectively avoided;
under normal conditions, the voltage isolation transmitter outputs 4-20 mA analog signals, when a detection line is disconnected or the voltage isolation transmitter fails, the output of the voltage isolation transmitter is smaller than 4mA, so that the failure state is judged, the failure state is displayed on a display module, the reliability of the device is improved, and safety accidents caused by the failure of the voltage isolation transmitter and the detection line are effectively avoided.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawing in the description below is only one embodiment of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a contact network voltage display device according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent and fully by reference to the accompanying drawings, in which it is shown, however, 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.
As shown in fig. 1, the catenary voltage display device provided in this embodiment includes a control module and a display module; the AD converter of the control module is connected with the voltage isolation transmitter in the Internet surfing isolation switch cabinet, and the digital signal input end DI of the control module is connected with the auxiliary contact of the isolation switch in the Internet surfing isolation switch cabinet; the output end of the control module is connected with the display module.
The AD converter of the control module converts an analog quantity signal output by the voltage isolation transmitter into a digital signal, compares the digital signal with a safety voltage, and indicates that the contact network is electroless when the voltage is lower than the safety voltage; and when the voltage is higher than the safety voltage, the contact net is electrified. The control module also judges the state of the isolating switch according to the opening and closing state of the auxiliary contact of the isolating switch (when the auxiliary contact of the isolating switch is opened, the DI end inputs a low level, and when the auxiliary contact of the isolating switch is closed, the DI end inputs a high level), and when the auxiliary contact of the isolating switch is closed, the isolating switch is in a closed position; when the auxiliary contact is opened, the isolating switch is in the split position.
The display module is used for displaying states of the contact net and the isolating switch according to judgment of the control module.
In this embodiment, the control module adopts a single-chip microcomputer, and the single-chip microcomputer is connected with the display module through a parallel interface. The display module is an LED display module, the LED display module comprises a driving module and an LED display screen, the input end of the driving module is connected with the output end of the control module, and the output end of the driving module is connected with the LED display screen.
When the contact network voltage output by the voltage isolation transmitter is lower than the safety voltage and the isolation switch is in the separated position, the corresponding font on the LED display module turns green, so that the isolation switch is in the separated position and the contact network is safe; when the contact network voltage output by the voltage isolation transmitter is lower than the safety voltage and the isolation switch is in the on-position (the upper direct current breaker is in the off-position), the corresponding font on the LED display module turns yellow, which indicates that the isolation switch is in the on-position and potential safety hazard exists; when the contact network voltage output by the voltage isolation transmitter is higher than the safety voltage, the corresponding font on the LED display module turns red. The LED display screen can also directly display the voltage value of the contact net. The states of the contact net and the isolating switch can be judged by train maintenance staff through the font colors on the LED display screen, so that the states of the contact net and the isolating switch are more visual, and the train maintenance staff can judge conveniently.
In this embodiment, the apparatus further includes an alarm module connected to the control module.
Under normal conditions, the voltage isolation transmitter outputs 4-20 mA analog quantity signals, when a detection line is disconnected and/or the voltage isolation transmitter fails, the output of the voltage isolation transmitter is smaller than 4mA, so that the control module judges a failure state, the control alarm module gives out an alarm and displays the alarm on the display module, the voltage isolation transmitter has the functions of checking and detecting the line failure and detecting the power failure of the voltage isolation transmitter, the reliability of the device is improved, and safety accidents caused by the voltage isolation transmitter and the detection line failure are effectively avoided. When a failure occurs, the LED display screen displays a 'device failure' (yellow font).
The foregoing disclosure is merely illustrative of specific embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art will readily recognize that changes and modifications are possible within the scope of the present utility model.
Claims (7)
1. The contact net voltage display device is characterized by comprising a control module and a display module; the AD converter of the control module is connected with the voltage isolation transmitter in the Internet surfing isolation switch cabinet, and the digital signal input end of the control module is connected with the auxiliary contact of the isolation switch in the Internet surfing isolation switch cabinet; the output end of the control module is connected with the display module.
2. The overhead line system voltage display device according to claim 1, wherein the control module is connected to the display module through a parallel interface.
3. The overhead line system voltage display device according to claim 1, wherein the control module is a single-chip microcomputer.
4. The overhead line system voltage display device according to claim 1, wherein the display module is an LED display module, and the LED display module includes a driving module and an LED display screen.
5. The overhead line system voltage display device according to any one of claims 1 to 4, further comprising an alarm module connected to the control module.
6. The overhead line system voltage display device according to claim 5, wherein the alarm module is a buzzer or an alarm indicator.
7. A net-surfing isolating switch cabinet, characterized in that it comprises a contact net voltage display device according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322208654.0U CN220584307U (en) | 2023-08-16 | 2023-08-16 | Internet surfing isolating switch cabinet and contact net voltage display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322208654.0U CN220584307U (en) | 2023-08-16 | 2023-08-16 | Internet surfing isolating switch cabinet and contact net voltage display device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220584307U true CN220584307U (en) | 2024-03-12 |
Family
ID=90115173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322208654.0U Active CN220584307U (en) | 2023-08-16 | 2023-08-16 | Internet surfing isolating switch cabinet and contact net voltage display device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220584307U (en) |
-
2023
- 2023-08-16 CN CN202322208654.0U patent/CN220584307U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022127160A1 (en) | Opening/closing operation apparatus for multiple types of circuit breaker, and fault detection method | |
| CN101858958A (en) | Intelligent device and method for monitoring vacuum circuit breaker on line | |
| CN109669104B (en) | Method and device for monitoring intelligent insulation state of ship power grid system based on injection signal | |
| CN2886594Y (en) | A device in universal leakage circuit breaker testing bench, for detecting switching on/off condition of circuit breaker | |
| CN201796290U (en) | Common fault emergency treatment device for electric locomotive | |
| CN110491257A (en) | A kind of fault simulation displaying device | |
| CN220584307U (en) | Internet surfing isolating switch cabinet and contact net voltage display device thereof | |
| CN212007767U (en) | Power transformer mechanical state detection system | |
| CN203502379U (en) | Real-time dynamic flaw detection system of steel wire ropes | |
| CN112034812A (en) | Railway controller internal component fault self-diagnosis system and method | |
| CN107481541A (en) | A kind of signal lamp driver overlaps fault detection method | |
| CN106774026A (en) | A kind of intelligent line controller | |
| CN207164129U (en) | Ring main unit anti-misconnection grounding switch phonetic alarm device | |
| CN106226625B (en) | Automatic diagnosis device for electric system of tower crane and use method thereof | |
| CN207114676U (en) | The short circuit of EKL cable-types and earth-fault indicator | |
| CN211351335U (en) | Control electric cabinet for high-voltage line | |
| CN2672846Y (en) | Detector for fuse or switch state | |
| CN205067686U (en) | Circuit breaker auxiliary switch's detection device based on single chip microcomputer control | |
| CN210222177U (en) | Intelligent insulation monitoring device for ship power grid system | |
| CN220305436U (en) | Insulation monitoring device of off-line system | |
| CN205855870U (en) | A kind of tower crane sensor safe operating monitoring system | |
| CN205941766U (en) | Converter system with broken string detects function | |
| CN215910554U (en) | Full self-checking functional live/electroscope display device | |
| CN110118933A (en) | A kind of crane motor stator exception loss protecting function validation checking system | |
| CN204269753U (en) | Paired cable type fault detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |