CN208721758U - A kind of Coal Mechanical power loop electric leakage locking detection device - Google Patents
A kind of Coal Mechanical power loop electric leakage locking detection device Download PDFInfo
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- CN208721758U CN208721758U CN201821425097.0U CN201821425097U CN208721758U CN 208721758 U CN208721758 U CN 208721758U CN 201821425097 U CN201821425097 U CN 201821425097U CN 208721758 U CN208721758 U CN 208721758U
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- voltage relay
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Abstract
The utility model discloses a kind of Coal Mechanical power loop electric leakage locking detection devices, including microprocessor, high-voltage relay is isolated, detect high-voltage relay, DC power supply, sampling unit and adjustable rheostat, when use, isolation high-voltage relay is connect with voltage and current detecting unit, detection high-voltage relay is connected with the one of Coal Mechanical power loop, adjustable rheostat is connect with the motor in Coal Mechanical power loop, microprocessor is connect with Coal Mechanical main controller, it is grounded between sampling unit and adjustable rheostat, from the anode of DC power supply, through detecting high-voltage relay, one phase of Coal Mechanical power loop, motor, adjustable rheostat, sampling unit, to DC power cathode, constitute leakage detecting circuit.The utility model detection operation is accurate, improves the reliability and safety of earth leakage search/lockout detection.
Description
Technical field
The utility model relates to coals in transhipment, dedusting technical field of operation in transmission process, specifically a kind of coal
Machine power circuit electric leakage locking detection device.
Background technique
Domestic thermal power plant mostly uses greatly high pressure, high-power Coal Mechanical, and for the sake of security, basic load is moved
Power circuit requires configuration electric leakage locking detection device.Due to detecting the factors such as frequent switching in multi-loop transmission electric process, usually
Some interference can be brought, the accuracy and safety of detection of electrical leakage are influenced.
Summary of the invention
The purpose of this utility model is that in view of the deficiency of the prior art, watering can be automatically adjusted by force by providing one kind
Degree and watering time Coal Mechanical power loop electric leakage locking detection device.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Coal Mechanical power loop electric leakage locking detection device, the locking of Coal Mechanical power loop is by Coal Mechanical
Main controller controls, and the voltage and current detecting unit of real-time monitoring electric current and voltage, the electric leakage are equipped in Coal Mechanical power loop
Locking detection device includes microprocessor, isolation high-voltage relay, detection high-voltage relay, DC power supply, sampling unit and can
Adjust rheostat, the detection high-voltage relay respectively with the anode of the DC power supply, microprocessor and high-voltage relay is isolated
Connection, the sampling unit are connect with the cathode of the DC power supply and adjustable rheostat respectively；In use, the isolation high pressure
Relay is connected with the one of voltage and current detecting unit and Coal Mechanical power loop respectively, the adjustable rheostat and coal
Motor connection in machine power circuit, the microprocessor are connect with Coal Mechanical main controller, sampling unit and adjustable variable resistance
It is grounded between device, from the anode of DC power supply, through the detection high-voltage relay, isolation high-voltage relay, coal machine
One phase of tool power loop, motor, adjustable rheostat, sampling unit, until DC power cathode, constitutes leakage detecting circuit.
In the further design scheme of the utility model, the model STM32F407 microprocessor of above-mentioned microprocessor.
In the further design scheme of the utility model, above-mentioned Coal Mechanical power loop includes that broken motor power returns
Road, cutting motor power loop or Oil pump electrical machinery power loop.
The utility model have it is following prominent the utility model has the advantages that
The utility model is high using double high_voltage isolations based on the earth leakage search/lockout detecting and controlling system of STM32F407 microprocessor
Potential relay can switch over detection, strengthen the stress levels of detection device and power loop, and build in detection of electrical leakage channel
The voltage and current of power loop is detected before vertical, judges the power supply situation of power loop, it is ensured that power loop is not supplying
Detection of electrical leakage is carried out under the situation of electricity, improves the reliability and safety of electric leakage locking detection device.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of Coal Mechanical power loop electric leakage locking detection device in embodiment；
In figure, 1- Coal Mechanical main controller, 2- voltage and current detecting unit, 3- microprocessor, 4- isolation high-voltage relay,
5- detects high-voltage relay, 6- DC power supply, 7- sampling unit, 8- is adjustable rheostat, 9- motor.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, Coal Mechanical power loop electric leakage locking detection device in the utility model, Coal Mechanical power is returned
The locking on road is controlled by Coal Mechanical main controller 1, and the voltage of real-time monitoring electric current and voltage is equipped in Coal Mechanical power loop
Current detecting unit 2, the electric leakage locking detection device include microprocessor 3, isolation high-voltage relay 4, detection high-voltage relay
5, DC power supply 6, sampling unit 7 and adjustable rheostat 8, detection high-voltage relay 5 respectively with positive, micro- place of DC power supply 6
It manages device 3 and isolation high-voltage relay 4 connects, sampling unit 7 is connect with the cathode of DC power supply 6 and adjustable rheostat 8 respectively.
The model STM32F407 microprocessor 3 of microprocessor 3.STM32F407 is based in high performance 32 RISC
Core, working frequency are up to 168 MHz's.DSP instruction and the memory protection location MPU for realizing complete set, are answered to improve
With the safety of program.Using the ART accelerator of ST, program is equivalent to the more memories of 0 waiting from FLASH operation；3
12 ADC, two DAC, 1 low-power consumption RTC, 12 general 16 bit timing devices are controlled including two for motor 9
PWM timer, two general 32 bit timing devices.It is further provided with standard and advanced communication interface.Electric leakage is very well satisfied to adopt
The design requirement of sample, it is ensured that the reliability of movement.
In use, the isolation high-voltage relay 4 respectively with voltage and current detecting unit 2 and Coal Mechanical power loop
One is connected, and the adjustable rheostat 8 is connect with the motor 9 in Coal Mechanical power loop, the microprocessor 3 and coal machine
Tool main controller 1 connects, and is grounded between sampling unit 7 and adjustable rheostat 8, from the anode of DC power supply 6, through the inspection
Survey high-voltage relay 5, isolation high-voltage relay 4, a phase of Coal Mechanical power loop, motor 9, adjustable rheostat 8, sampling list
Member 7, until 6 cathode of DC power supply, constitutes leakage detecting circuit.Microprocessor 3 receives the enabling signal of Coal Mechanical main controller 1
Afterwards, 5 normally closed of high-voltage relay is detected, detection of electrical leakage Path Setup simultaneously starts to detect, and power loop leaks if detecting
When electric, microprocessor 3 issues electric leakage signal to Coal Mechanical main controller 1, and the electricity of power loop is latched by Coal Mechanical main controller 1
Machine 9 is forbidden powering on and issuing failure alarm signal；When not detecting electric leakage, the control detection high-voltage relay 5 of microprocessor 3 is disconnected
Sense channel is opened, terminates earth leakage search/lockout detection, and will test result and be sent to Coal Mechanical main controller 1, by Coal Mechanical master control
Device 1 drives executing agency to power on for power loop.
In the utility model, using the double high_voltage isolations for including isolation high-voltage relay 4 and detection high-voltage relay 5
Relay when voltage and current detecting unit 2, which detects in power loop, voltage or electric current forbids that high-voltage relay 4 is isolated
Closure, when voltage, the current signal for only detecting when voltage and current detecting unit 2 in power loop are zero, isolation high pressure after
Electric appliance 4 is closed, and allows to carry out earth leakage search/lockout detection.Voltage and current detecting unit 2, which detects signal, can pass through Coal Mechanical main controller 1
Microprocessor 3 is passed to, microprocessor 3 judges before carrying out detection of electrical leakage according to the voltage and current signals of power loop,
It can be effectively avoided in the state of power loop power supply, detection of electrical leakage channel errors are connected, directly will be in power loop
High pressure introduces measure loop, causes failure.Meanwhile it is that series connection makes that high-voltage relay 4, which is isolated, and detects high-voltage relay 5
With, a kind of redundancy interlocking structure is formd, in the state that the disconnection of high-voltage relay 4 is isolated, detection high-voltage relay 5 is closed,
Even if closure can not be such that detection of electrical leakage channel connects, the high-voltage breakdown leakage generated due to power loop failure is more efficiently prevented from
Electro-detection circuit, to expand fault coverage.The electric leakage locking detection device of the utility model has the effect of double insurance.
The electric leakage locking detection device of the utility model can be applied to broken motor power circuit, cutting motor power returns
In the detection of the earth leakage search/lockout of road or Oil pump electrical machinery power loop.It is the preferred embodiment of the utility model above, Fan Yiben is practical
Change made by new technique scheme, generated function without departing from technical solutions of the utility model range when, belong to
In the protection scope of the utility model.
Claims (3)
1. a kind of Coal Mechanical power loop electric leakage locking detection device, the locking of Coal Mechanical power loop is by Coal Mechanical master
Device (1) control is controlled, the voltage and current detecting unit (2) of real-time monitoring electric current and voltage is equipped in Coal Mechanical power loop,
It is characterized in that, including microprocessor (3), isolation high-voltage relay (4), detection high-voltage relay (5), DC power supply (6), sampling
Unit (7) and adjustable rheostat (8), detection high-voltage relay (5) respectively with positive, micro- place of the DC power supply (6)
Manage device (3) and isolation high-voltage relay (4) connect, the sampling unit (7) respectively with the cathode of the DC power supply (6) and can
Adjust rheostat (8) connection；In use, the isolation high-voltage relay (4) respectively with voltage and current detecting unit (2) and coal machine
The one of tool power loop is connected, and the adjustable rheostat (8) connect with the motor (9) in Coal Mechanical power loop, described
Microprocessor (3) is connect with Coal Mechanical main controller (1), is grounded between sampling unit (7) and adjustable rheostat (8), from
The anode of DC power supply (6) rises, and returns through the detection high-voltage relay (5), isolation high-voltage relay (4), Coal Mechanical power
One phase on road, motor (9), adjustable rheostat (8), sampling unit (7), until DC power supply (6) cathode, constitutes detection of electrical leakage and return
Road.
2. Coal Mechanical power loop electric leakage locking detection device according to claim 1, which is characterized in that micro- place
Manage the model STM32F407 microprocessor (3) of device (3).
3. Coal Mechanical power loop electric leakage locking detection device according to claim 1, which is characterized in that the coal
Machine power circuit includes broken motor power circuit, cutting motor power loop or Oil pump electrical machinery power loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425097.0U CN208721758U (en) | 2018-08-31 | 2018-08-31 | A kind of Coal Mechanical power loop electric leakage locking detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425097.0U CN208721758U (en) | 2018-08-31 | 2018-08-31 | A kind of Coal Mechanical power loop electric leakage locking detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721758U true CN208721758U (en) | 2019-04-09 |
Family
ID=65980631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821425097.0U Active CN208721758U (en) | 2018-08-31 | 2018-08-31 | A kind of Coal Mechanical power loop electric leakage locking detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208721758U (en) |
-
2018
- 2018-08-31 CN CN201821425097.0U patent/CN208721758U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210031 No. 10, Pudong Road, Pukou District, Jiangsu, Nanjing Patentee after: Guoneng Nanjing coal quality supervision and Inspection Co.,Ltd. Address before: 210031 No. 10, Pudong Road, Pukou District, Jiangsu, Nanjing Patentee before: GUODIAN NANJING COAL QUALITY SUPERVISION AND INSPECTION Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |