CN201812163U - Automatic ground protection device for power supply of light-track vehicle garage - Google Patents
Automatic ground protection device for power supply of light-track vehicle garage Download PDFInfo
- Publication number
- CN201812163U CN201812163U CN2010205178366U CN201020517836U CN201812163U CN 201812163 U CN201812163 U CN 201812163U CN 2010205178366 U CN2010205178366 U CN 2010205178366U CN 201020517836 U CN201020517836 U CN 201020517836U CN 201812163 U CN201812163 U CN 201812163U
- Authority
- CN
- China
- Prior art keywords
- switch
- supply lines
- central processing
- processing unit
- voltage signal
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model discloses an automatic ground protection device for a power supply of a light-track vehicle garage, which is characterized in that a central processing unit receives and processes control commands transmitted by a control box; and when powering-down commands are transmitted, the central processing unit controls to cut off a power supply wire powering-up switch K1 and close a discharging resistor switch K3, an alarm unit alarms, the central processing unit promptly receives a voltage signal transmitted back by a power supply wire voltage signal detection unit and judges whether the voltage indicated by the voltage signal is higher than a set threshold, and when the voltage indicated by the voltage signal is higher than the threshold, the state is maintained; when the voltage indicated by the voltage signal is lower than the threshold, a grounding switch K2 is controlled to be cut off, and the alarm unit is controlled to stop alarming; and when powering-up commands are transmitted, the central processing unit controls the alarm unit to alarm, the grounding switch K2 and the discharging resistor switch K3 are controlled to be cut off, and the power supply wire powering-up switch K1 is controlled to be closed. The automatic ground protection device is simple to operate, has high degree of automation, has the functions of automatic powering-up and alarming, and is suitable for wide promotion.
Description
Technical field
The utility model relates to the automatic earth protective device of a kind of light rail garage power supply.
Background technology
The power supply of light rail car is generally direct current 750V---1500V, the single line power supply, and supply line is above the light rail car, and the light rail car contacts power taking by pantograph with supply line, and rail is used for current return as ground wire.The light rail garage is used for parking and overhauling of light rail car, has the power supply of independent control, can carry out power-on and power-off control flexibly, is convenient to the maintenance of vehicle.When vehicle roof equipment is overhauled, must be down to supply line, and supply line carried out ground connection, even supply lines is powered on by maloperation or other reasons once more like this, ground wire also can be introduced the earth with electric current, the big electric current that produces also can allow the power supply tripping operation, runs into the electric shock accidents that supply lines and other electrical equipments cause when can well the preventativemaintenance personnel carrying out upkeep operation.At present; the normal method that adopts is for as shown in Figure 1; K1 is the last electric control switch of supply lines; it is a cutter type switch; it is opened and turn-offs is to draw by the rotating of a small machine to finish; the rotating of small machine is by the rotating button control of manually-operated small machine; the earth protective device in light rail garage is a simple ground connection hook 1; ground connection hook 1 is one one and terminates on the rail (the earth); the other end is made hook-shaped conductor; after the electricity, manually hang on the supply lines with the hook end of insulating bar with ground connection hook 1 under power supply, whole like this supply lines has just been received together with the earth.But there is following shortcoming in above-mentioned technology:
1, total man worker's operation, in the practical operation, a lot of operating personnel scheme simply, be unwilling ground connection is hooked on the supply lines, cause (1) though supply lines is following, but the electric capacity on the light rail car that supply lines connect and other capacitive devices on the supply lines are appointed and are had a large amount of electric energy, and the maintenance personal touches supply lines or other electrical equipments still might get an electric shock at roof, and the danger that causes the high-altitude to fall.(2) the maintenance personal during still at the roof upkeep operation, operating personnel allow supply lines power on, and cause the maintenance personal to get an electric shock, danger is fallen in the high-altitude.
2, behind electricity under the supply lines, electric capacity on the light rail car that supply lines connect and other capacitive devices on the supply lines are appointed and are had a large amount of electric energy, directly hang over ground connection hook supply lines on insulating bar this moment, at first can between supply lines and ground connection ditch, produce a large amount of electric sparks, supply lines box ground connection hook is caused damage, in addition because the ground connection hook is directly to receive on the rail from supply lines, therefore contact the moment of supply lines at the ground connection clasp joint, electric capacity on the light rail car that supply lines connect and other capacitive devices on the supply lines, it is an instantaneous discharge process, electric current is very big, be equivalent to instantaneous short-circuit, can significantly reduce the electric capacity on the light rail car that supply lines connects and the serviceable life of other capacitive devices on the supply lines.
3, when supply lines powers on, at first ground connection to be hooked up down, could power on to supply lines then, yet the site operation personnel often ignores and also hangs with the ground connection hook on the supply lines, and the ground wire shorted to earth when causing powering on that directly powers on, thereby cause the power supply tripping operation, the huge momentary current that produces when powering in addition may burn some devices of supply lines.
4, this technical scheme lacks the warning device that powers on, and can not effectively report to the police in the supply lines power up or when charged.
Summary of the invention
The utility model adopts following scheme to overcome the above problems.
1. electricity is under the supply lines; the automatic earth protective device of this invention design will be connected discharge resistance automatically; a large amount of electric energy of electric capacity on the light rail car that supply lines connect and other capacitive devices on the supply lines is released; guaranteed can not wounded when the maintenance personal carries out maintenance activity by this part electric energy; this part energy is slowly released by resistance simultaneously, can not produce infringement to the electric capacity on the light rail car that supply lines connect and other capacitive devices on the supply lines.Can not produce spark when ground wire and supply lines are connected in addition yet, damage switch.
2. owing to be to control automatically by single-chip microcomputer, so deenergization, connection discharge resistance, connection ground wire, disconnect ground wire, send electric alarm, disconnect discharge resistance, energized all is by monolithic processor controlled, action-item can not appear omitting, human error can not occur, cause not having ground connection and situation about powering on, thereby cause personnel to injure or device damage.
3. generally before supply lines powers on; the operating personnel that power on can notify the vehicle maintenance personnel to withdraw supply lines in the neighbourhood; and then power on; yet; the operating personnel that power in the reality forget sometimes to notify the maintenance personal or have the maintenance personal to notify when withdrawing and are omitted; this is to power on cause the injury of getting an electric shock may for these personnel; because the automatic earth protective device of this invention design has the function that goes up electric alarm automatically; after the operating personnel that power on notify the maintenance personal to withdraw; operation powers on; after central control unit is received the instruction that powers on; can sound the last electric alarm that is installed in maintenance activity ground immediately; and light the warning light that powers on, allow the personnel that leave over maintenance activity withdraw, after two minutes; disconnect grounding switch again; disconnect discharge resistance, closed power switch.The probability of less so greatly maintenance personal's electric shock.
The technological means that the utility model adopts is as follows:
Power supply automatic earth protective device in a kind of light rail garage is characterized in that comprising CPU (central processing unit), control enclosure, supply lines voltage signal detecting unit, switch element and alarm unit;
Described control enclosure is used for operating personnel and powers on and following electric signal to the CPU (central processing unit) transmission;
Described supply lines voltage signal detecting unit is used to detect voltage swing on the supply lines, and gives CPU (central processing unit) with the testing result real-time Transmission;
Described switch element comprises supply lines upper electrical switch K1, grounding switch K2 and discharge resistance K switch 3, it is upper and lower that described supply lines upper electrical switch K1 is used to control vehicle, described grounding switch K2 is used to control the vehicle supply lines and links to each other together or disconnect, and described discharge resistance K switch 3 is used to control the vehicle supply lines and links to each other with discharge resistance or disconnect;
Described alarm unit is used to carry out sound, light is reported to the police;
Described control enclosure is connected with CPU (central processing unit) by data line with supply lines voltage signal detecting unit; Described switch element is connected by the IO mouth of lead with CPU (central processing unit) with alarm unit.
Described supply lines voltage signal detecting unit is voltage sensor DCVT, and described CPU (central processing unit) is a STC5410 type single-chip microcomputer.
Described supply lines upper electrical switch K1, grounding switch K2 are cutter type switch, and it is opened and turn-offs is rotating traction control by small machine; Described discharge resistance K switch 3 is a contactor.
Compare with prior art, the utility model has the advantages that conspicuous, specific as follows:
1, adopts control automatically, can finish down electricity, discharge, ground connection, disconnection ground connection automatically, disconnect discharge, report to the police, go up a series of controls of electric light, simplified operation, reduced the serious consequence that human error causes.
2, have automatic discharging function, reduced the infringement of ground connection discharge, the risk of the electric shock that also having reduced does not discharge causes the maintenance personal equipment.
3, have the warning function that powers on automatically, reduced electric shock risk the maintenance personal.
Description of drawings
Fig. 1 is original technology grounding circuit synoptic diagram;
Fig. 2 is the automatic earth protective device main circuit of a light rail garage power supply synoptic diagram;
Fig. 3 is the automatic earth protective device central control unit of a light rail garage power supply synoptic diagram.
Among the figure: 1, ground connection hook, 2, CPU (central processing unit), 3, control enclosure, 4, supply lines voltage signal detecting unit, 5, switch element, 6, alarm unit.
Embodiment
The automatic earth protective device of light rail garage power supply shown in Fig. 2 and 3 comprises CPU (central processing unit) 2, control enclosure 3, supply lines voltage signal detecting unit 4, switch element 5 and alarm unit 6;
Described control enclosure 3 is used for operating personnel and powers on and following electric signal to CPU (central processing unit) 2 transmissions;
Described supply lines voltage signal detecting unit 4 is used to detect voltage swing on the supply lines, and gives CPU (central processing unit) 2 with the testing result real-time Transmission;
Described switch element 5 comprises supply lines upper electrical switch K1, grounding switch K2 and discharge resistance K switch 3, it is upper and lower that described supply lines upper electrical switch K1 is used to control vehicle, described grounding switch K2 is used to control the vehicle supply lines and links to each other together or disconnect, and described discharge resistance K switch 3 is used to control the vehicle supply lines and links to each other with discharge resistance or disconnect;
Described alarm unit 6 is used to carry out sound, light is reported to the police;
Described CPU (central processing unit) 2 is used to receive the steering order that control enclosure 3 transmits and handles, and send corresponding steering order: transmit to such an extent that be electricity instruction down when receiving control enclosure 3 to switch element 5, CPU (central processing unit) 2 is sent to switch element 5 and is disconnected supply lines upper electrical switch K1 and 3 instructions of closed discharge resistance K switch, and control alarm unit 6 is reported to the police, voltage signal on the vehicle supply lines that while CPU (central processing unit) 2 real-time reception supply lines voltage signal detecting units 4 are passed back, and judge that whether voltage that this voltage signal represents is greater than setting threshold (it is threshold criteria that the utility model adopts human safety voltage 36V), as greater than setting threshold, hold mode is constant; As less than setting threshold, the instruction that CPU (central processing unit) 2 is sent closed ground switch K2 to switch element 5 is controlled alarm unit 6 simultaneously and is stopped to report to the police; Transmit to such an extent that be the instruction that powers on when receiving control enclosure 3, described CPU (central processing unit) 2 control alarm units 6 are reported to the police, send the instruction that disconnects grounding switch K2 and discharge resistance K switch 3, the instruction of sending closed supply lines upper electrical switch K1 then to switch element 5 to switch element 5 simultaneously.
Wherein supply lines voltage signal detecting unit 4 is voltage sensor DCVT, described CPU (central processing unit) 2 is a STC5410 type single-chip microcomputer, this chip has 10 AD, can handle the signal that the supply lines voltage signal processing unit is given single-chip microcomputer, can satisfy the design needs.The controlling alarm unit is the unit that is used for electric alarm, alarming horn and alarm lamp two parts are arranged, they are installed in the maintenance activity district of light rail car, its STC single-chip microcomputer is the power supply that switches on or off them by the IO mouth signal control contactor of STC, and they give the alarm or stop the purpose (certain CPU (central processing unit) 2 described in the utility model also can adopt other single-chip microcomputer, DSP, ARM, FPGA, PLC etc. to have the device of logic control function or equipment as main control unit) of alarm to reach control.Shown in have at least in the control enclosure 3 power on, two control knobs of electricity down, operating personnel can power on by the operation to them and following electric control.
Described supply lines upper electrical switch K1, grounding switch K2 are cutter type switch, and it is opened and turn-offs is rotating traction control by small machine, and the rotating of small machine is to adopt the contactor group to realize; Described discharge resistance K switch 3 is a contactor, and only turning on and off of the coil of need control contact just can be realized the shutoff of opening of K3.
Transmit to such an extent that be the instruction that powers on when receiving control enclosure 3, described CPU (central processing unit) 2 is sent the instruction of closed supply lines upper electrical switch K1 to switch element 5, after supply lines upper electrical switch K1 closure, described CPU (central processing unit) 2 control alarm units 6 stop to carry out acoustic alarm, only carry out light and report to the police.
The control method that this protective device carries out the automatic ground connection of light rail garage power supply is as follows:
Following electric control:
(1) operating personnel's operating operation control enclosure 3 sends down the electricity instruction to CPU (central processing unit) 2, and the supply lines upper electrical switch K1 in CPU (central processing unit) 2 control switch unit 5 disconnects then, and control alarm unit 6 is reported to the police;
(2) discharge resistance K switch 3 closures in CPU (central processing unit) 2 control switch unit 5;
(3) simultaneously CPU (central processing unit) 2 receives voltage signal on the vehicle supply lines that supply lines voltage signal detecting units 4 pass back in real time, and judges that whether voltage that this voltage signal represents is greater than setting threshold
(4) as greater than setting threshold, hold mode is constant;
(5) as less than setting threshold, the instruction that CPU (central processing unit) 2 is sent closed ground switch K2 to switch element 5 is controlled alarm unit 6 simultaneously and is stopped to report to the police.
What at this moment, the vehicle maintenance personnel just can safety carries out the vehicle maintenance operation.After finishing maintenance activity, after supply lines power-on and power-off operating personnel notified the vehicle maintenance personnel to withdraw, operation just can power on.
Last electric control:
(1) operating personnel's operating operation control enclosure 3 sends the instruction that powers on to CPU (central processing unit) 2, and CPU (central processing unit) 2 control alarm units 6 are reported to the police then, and in the time of waiting for more than two minutes;
(2) after wait was finished, grounding switch K2 in CPU (central processing unit) 2 control switch unit 5 and discharge resistance K switch 3 disconnected;
(3) the supply lines upper electrical switch K1 closure in CPU (central processing unit) 2 control switch unit 5 then.
In addition, the controlled step that powers on can comprise also that after supply lines upper electrical switch K1 closure described CPU (central processing unit) 2 control alarm units 6 stop to carry out acoustic alarm, only carry out the step that light is reported to the police.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.
Claims (3)
1. the automatic earth protective device of light rail garage power supply is characterized in that comprising CPU (central processing unit) (2), control enclosure (3), supply lines voltage signal detecting unit (4), switch element (5) and alarm unit (6);
Described control enclosure (3) is used for operating personnel and powers on and following electric signal to CPU (central processing unit) (2) transmission;
Described supply lines voltage signal detecting unit (4) is used to detect voltage swing on the supply lines, and gives CPU (central processing unit) (2) with the testing result real-time Transmission;
Described switch element (5) comprises supply lines upper electrical switch K1, grounding switch K2 and discharge resistance K switch 3, it is upper and lower that described supply lines upper electrical switch K1 is used to control vehicle, described grounding switch K2 is used to control the vehicle supply lines and links to each other together or disconnect, and described discharge resistance K switch 3 is used to control the vehicle supply lines and links to each other with discharge resistance or disconnect;
Described alarm unit (6) is used to carry out sound, light is reported to the police;
Described control enclosure (3) is connected by the same CPU (central processing unit) of data line (2) with supply lines voltage signal detecting unit (4); Described switch element (5) is connected with the IO mouth of alarm unit (6) by the same CPU (central processing unit) of lead (2).
2. the automatic earth protective device of a kind of light rail according to claim 1 garage power supply is characterized in that described supply lines voltage signal detecting unit (4) is voltage sensor DCVT, and described CPU (central processing unit) (2) is a STC5410 type single-chip microcomputer.
3. the automatic earth protective device of a kind of light rail according to claim 1 garage power supply is characterized in that described supply lines upper electrical switch K1, grounding switch K2 are cutter type switch, and it is opened and turn-offs is rotating traction control by small machine; Described discharge resistance K switch 3 is a contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205178366U CN201812163U (en) | 2010-08-31 | 2010-08-31 | Automatic ground protection device for power supply of light-track vehicle garage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205178366U CN201812163U (en) | 2010-08-31 | 2010-08-31 | Automatic ground protection device for power supply of light-track vehicle garage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812163U true CN201812163U (en) | 2011-04-27 |
Family
ID=43895103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205178366U Expired - Fee Related CN201812163U (en) | 2010-08-31 | 2010-08-31 | Automatic ground protection device for power supply of light-track vehicle garage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812163U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035195A (en) * | 2010-08-31 | 2011-04-27 | 中国北车股份有限公司大连电力牵引研发中心 | Automatic ground protective device for light rail garage power and control method thereof |
| CN103660951A (en) * | 2012-09-05 | 2014-03-26 | 中国北车股份有限公司大连电力牵引研发中心 | Voltage indication device of railway vehicle and railway vehicle |
-
2010
- 2010-08-31 CN CN2010205178366U patent/CN201812163U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035195A (en) * | 2010-08-31 | 2011-04-27 | 中国北车股份有限公司大连电力牵引研发中心 | Automatic ground protective device for light rail garage power and control method thereof |
| CN102035195B (en) * | 2010-08-31 | 2014-03-12 | 中国北车股份有限公司大连电力牵引研发中心 | Automatic ground protective device for light rail garage power and control method thereof |
| CN103660951A (en) * | 2012-09-05 | 2014-03-26 | 中国北车股份有限公司大连电力牵引研发中心 | Voltage indication device of railway vehicle and railway vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102231489B (en) | Method for monitoring grounding wire connection status during power line maintenance work | |
| CN207180888U (en) | A kind of cable temperature monitoring device with alarm and power down function | |
| CN103616859A (en) | Visualization direct current supply grounding device based on video image, and monitor method | |
| CN202632491U (en) | Live-line cabinet door mis-open voice alarm device | |
| EP3896466A1 (en) | Arrival grounding safety monitoring system for rubber-wheeled rail vehicle | |
| CN108011348A (en) | Low-voltage intelligent distribution Control protection system and its control guard method | |
| CN103427394A (en) | Mining flame-proof type selective leakage protector | |
| CN201812163U (en) | Automatic ground protection device for power supply of light-track vehicle garage | |
| CN204271609U (en) | 10kV intelligent subscriber boundary switch controller | |
| CN102035195B (en) | Automatic ground protective device for light rail garage power and control method thereof | |
| CN110690751B (en) | Charging base and charging system | |
| CN104362586A (en) | Water logging monitoring and protecting device | |
| CN104648161A (en) | Anti-breaking device for contact line of electric locomotive | |
| CN201995078U (en) | Monitoring device for hanging and connecting of ground wire for overhauling operation of contact net based on video image | |
| CN202916635U (en) | Stand-by pump controller | |
| CN210854167U (en) | Alarm stopping device for bucket elevator | |
| CN107228698A (en) | Power equipment anti-flooding monitoring device | |
| CN107884662A (en) | A kind of electric wiring short circuit Forecasting Methodology | |
| CN113671265A (en) | Electric shock early warning device for overhauling equipment based on wireless transmission | |
| CN105872487A (en) | Power transmission line external breakage preventing monitor device based on wire power supply | |
| CN202305626U (en) | Intelligent automatic management system for preventing stealing electricity | |
| CN201773142U (en) | Structure for on-line monitoring electrifying state of high-voltage line, bus bar and main transformer | |
| CN204946288U (en) | A kind of anti-error ring for communication system detects and automatic electrifying device | |
| CN206065273U (en) | A kind of walking safe spacing alarming scram device of PC components die station | |
| CN212726471U (en) | Uninterrupted electric shock protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20130831 |