CN110794297A - Automatic calibration device for action power of intermediate relay - Google Patents
Automatic calibration device for action power of intermediate relay Download PDFInfo
- Publication number
- CN110794297A CN110794297A CN201911161486.6A CN201911161486A CN110794297A CN 110794297 A CN110794297 A CN 110794297A CN 201911161486 A CN201911161486 A CN 201911161486A CN 110794297 A CN110794297 A CN 110794297A
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- action
- voltage
- intermediate relay
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- power
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an automatic checking device for action power of an intermediate relay, which can be used for simply, quickly and accurately checking and simultaneously checking two groups of intermediate relays. The invention comprises a shell, wherein the front surface of the shell is a panel, and a CPU board, a circuit board and a wiring terminal are arranged in the shell; the wiring terminal is connected with the circuit board, the circuit board is connected with the CPU board, the CPU board is connected with the panel, the circuit board and the CPU board are fixed in the shell, and the panel and the wiring terminal are fixed on the front surface of the shell; the panel comprises a first group of measurement display units, a second group of measurement display units, two groups of action warning lamps and an operation monitoring lamp; the first group of measurement display units are used for displaying the measured action voltage, action current and action power of the first group of intermediate relays; the function of the second group of measurement display units is to display the measured action voltage, action current and action power of the second group of intermediate relays; the CPU board comprises a device CPU, an alarm relay, a power supply and a fuse.
Description
Technical Field
The invention belongs to the field of relay inspection devices, and particularly relates to a device for checking the action power of an intermediate relay.
Background
As a preventive test for ensuring the safe and stable operation of the intermediate relay of the power system, the intermediate relay action power test is used for verifying whether the coil of the intermediate relay is sensitive and reliable, and can also test the performance of the intermediate relay under the non-rated action power. The field operation process is influenced by various factors, and parameters of a relay coil can change, so that the action voltage and the action power are changed. In recent years, accidents caused by the fact that the operating power of the intermediate relay does not meet the requirements frequently occur, and the normal power supply of a power grid and the safe and stable operation of equipment are seriously influenced. The current method for testing the action power of the intermediate relay comprises the following steps: the relay protection testing device is adopted to output adjustable direct current voltage, a first universal meter is used for measuring the output direct current, and a second universal meter is used for monitoring the action condition of the intermediate relay. The analysis of the test flow shows that the wiring is complex, the process is complicated, the time consumption is long, the test time is difficult to shorten by improving the proficiency level of personnel or improving other organizational measures, meanwhile, the manual judgment and calculation can generate errors when a plurality of people cooperate to complete the experiment, and even the problems of misjudgment, miscalculation and even overheating and burnout of the relay due to long-time electrification can be caused.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an automatic calibration device for the action power of an intermediate relay, which can simply, rapidly and accurately calibrate the action power of the intermediate relay, and can simultaneously calibrate two sets of intermediate relays.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the utility model provides an intermediate relay action power automatic check device which characterized in that: the front surface of the shell is a panel, and a CPU board, a circuit board and a wiring terminal are arranged in the shell; the wiring terminal is connected with the circuit board, the circuit board is connected with the CPU board, the CPU board is connected with the panel, the circuit board and the CPU board are fixed in the shell, and the panel and the wiring terminal are fixed on the front surface of the shell;
the panel comprises a first group of measurement display units, a second group of measurement display units, two groups of action warning lamps and an operation monitoring lamp; the first group of measurement display units are used for displaying the measured action voltage, action current and action power of the first group of intermediate relays; the function of the second group of measurement display units is to display the measured action voltage, action current and action power of the second group of intermediate relays; the two groups of operation monitoring lamps are used for monitoring the operation state of the measuring circuit, and when the green lamp is lighted, the circuit of the measuring circuit is intact; the two groups of action warning lamps are used for informing maintainers whether the intermediate relay acts or not, and when the red lamp is lightened, the intermediate relay acts;
the CPU board comprises a device CPU, an alarm relay, a power supply and a fuse;
the circuit board converts alternating voltage into adjustable direct voltage, and the on-off of the intermediate relay node is collected and connected with the CPU board.
As a preferred embodiment of the present invention: the wiring terminal is an external insulation and internal metal universal test wiring terminal and is connected with the circuit board through a flexible conductor; the wiring terminal realizes the safety grounding of the device, the direct-current voltage output and the normally open node input wiring; the panel receives the DC current, DC voltage and power data transmitted by the CPU board and displays the data on the nixie tube.
As a preferred embodiment of the present invention: the CPU of the device collects an auxiliary node of an intermediate relay, calculates the action power under the current condition after a normally open node of the intermediate relay is closed, and displays the action voltage, the action current and the action power on a nixie tube; the alarm relay is used for lighting a device action alarm indicator lamp when the device is abnormal; the rated power supply of the device is alternating current 220V; when the input voltage of the device is greater than the rated voltage, the fuse breaks down; the insurance is insurance with a self-recovery function.
As a preferred embodiment of the present invention:
the circuit board comprises a Volt check board and a Display board;
in a Volt check board: the 0-220V alternating voltage is connected from IN1 and GND, is reduced IN voltage through RA4, is converted into direct current voltage through a rectifying circuit, changes the amplitude of the direct current voltage through an operational amplifier circuit, is sent to an RC1 pin of a single chip microcomputer U7, and acquires voltage IN real time, and acquires current IN real time through an RC2 pin. The single chip microcomputer judges the on-off of the relay node, and if the normally open node is switched on, the single chip microcomputer drives the relay to act and light an action alarm indicator lamp;
the Display board is a man-machine conversation circuit, receives voltage and current data transmitted by the singlechip and displays the data on the nixie tube db.
As a preferred embodiment of the present invention: the wiring terminals comprise two groups of output voltage wiring terminals, two groups of intermediate relay node input terminals and a group of safety ground terminals; the casing openly is provided with output binding post I, input binding post II, output binding post II, and the input inserts binding post II four pairs of terminals, and output binding post I and output binding post II are direct current voltage output terminal, and input binding post I and input binding post II are the intermediate relay normally open node input terminal.
As a preferred embodiment of the present invention: the front surface of the shell is provided with a front handle, and the side surface of the shell is provided with a heat dissipation hole and a side handle; the back of the shell is provided with a power supply jack and a safety.
The invention has the beneficial effects that:
the automatic calibration device for the action power of the intermediate relay can simply, quickly and accurately complete the test of the action power of the intermediate relay; the method has the characteristic of strong universality; the voltage value and the current value and the position of the normally open node of the relay are acquired by the single chip microcomputer (CPU), and the action power of the relay is obtained by the CPU, so that the working efficiency is improved, the misjudgment hidden danger existing in the traditional testing method is avoided, and the safe operation capacity of the power grid is improved.
Drawings
FIG. 1 is a schematic front view of a housing according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a housing according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a back structure of a housing according to an embodiment of the present invention;
FIG. 4 is a schematic block diagram of a circuit configuration of an embodiment of the present invention;
FIG. 5 is a schematic diagram of a Display board of the present invention;
fig. 6 is a schematic diagram of a Volt check board of the present invention.
Description of reference numerals:
1-shell, 2-output connecting terminals I, 3-input connecting terminals I, 4-output connecting terminals II, 5-input connecting terminals II, 6-first group measurement display unit, 7-second group measurement display unit, 8-power main switch, 9-front handle, 10-voltage regulation knob, 11-second group switch, 12-action warning lamp, 13-first group switch, 14-operation monitoring lamp, 15-radiating hole, 16-side handle, 17-power jack, 18-insurance.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
as shown in fig. 1 to 6, which illustrate a specific embodiment of the present invention, an automatic calibration device for operating power of an intermediate relay includes a housing 1, a front surface of the housing 1 is a panel, and a CPU board, a circuit board, and a connection terminal are disposed inside the housing 1; the wiring terminal is connected with the circuit board, the circuit board is connected with the CPU board, the CPU board is connected with the panel, the circuit board and the CPU board are fixed in the shell, and the panel and the wiring terminal are fixed on the front surface of the shell; the panel comprises a first set of measurement display units 6, a second set of measurement display units 8, two sets of action warning lamps 12 and an operation monitoring lamp 14; the first group of measurement display units are used for displaying the measured action voltage, action current and action power of the first group of intermediate relays; the function of the second group of measurement display units is to display the measured action voltage, action current and action power of the second group of intermediate relays; the two groups of operation monitoring lamps are used for monitoring the operation state of the measuring circuit, and when the green lamp is lighted, the circuit of the measuring circuit is intact; the two groups of action warning lamps are used for informing maintainers whether the intermediate relay acts or not, and when the red lamp is lightened, the intermediate relay acts; the CPU board comprises a device CPU, an alarm relay, a power supply and a fuse; the circuit board converts alternating voltage into adjustable direct voltage, and the on-off of the intermediate relay node is collected and connected with the CPU board.
Preferably, as shown in the figure: the wiring terminal is an external insulation and internal metal universal test wiring terminal and is connected with the circuit board through a flexible conductor; the wiring terminal realizes the safety grounding of the device, the direct-current voltage output and the normally open node input wiring; the panel receives the DC current, DC voltage and power data transmitted by the CPU board and displays the data on the nixie tube. Preferably, as shown in the figure: the CPU of the device collects an auxiliary node of an intermediate relay, calculates the action power under the current condition after a normally open node of the intermediate relay is closed, and displays the action voltage, the action current and the action power on a nixie tube; the alarm relay is used for lighting a device action alarm indicator lamp when the device is abnormal; the rated power supply of the device is alternating current 220V; when the input voltage of the device is greater than the rated voltage, the fuse breaks down; the insurance is insurance with a self-recovery function. Preferably, as shown in the figure: the circuit board comprises a Voltcheck board and a Display board; in a Volt check board: the 0-220V alternating voltage is connected from IN1 and GND, is reduced IN voltage through RA4, is converted into direct current voltage through a rectifying circuit, changes the amplitude of the direct current voltage through an operational amplifier circuit, is sent to an RC1 pin of a single chip microcomputer U7, and acquires voltage IN real time, and acquires current IN real time through an RC2 pin. The single chip microcomputer judges the on-off of the relay node, and if the normally open node is switched on, the single chip microcomputer drives the relay to act and light an action alarm indicator lamp; the Display board is a man-machine conversation circuit, receives voltage and current data transmitted by the singlechip and displays the data on the nixie tube db.
Preferably, as shown in the figure: the wiring terminals comprise two groups of output voltage wiring terminals, two groups of intermediate relay node input terminals and a group of safety ground terminals; the casing openly is provided with output binding post I, input binding post II, output binding post II, and the input inserts binding post II four pairs of terminals, and output binding post I and output binding post II are direct current voltage output terminal, and input binding post I and input binding post II are the intermediate relay normally open node input terminal.
In summary, as shown in fig. 1, the automatic calibration apparatus for operating power of an intermediate relay disclosed in the present invention includes a housing, and a connection terminal is an external insulation internal metal universal test connection terminal and is connected to a circuit board through a flexible wire. The wiring terminal realizes the functions of safety grounding, direct-current voltage output and normally-open node input wiring of the device. The circuit board realizes the function that the alternating voltage of the device is converted into direct voltage, and the collected direct voltage and direct current and the on-off condition of the auxiliary node of the intermediate relay are transmitted to the CPU board. The CPU board performs logical operation on the collected dc voltage, dc current, and on-off conditions of the auxiliary nodes of the intermediate relay, calculates the operation power of the intermediate relay, and simultaneously drives the circuit board to light the operation warning lamp 12. The panel of the invention receives the direct current, the direct voltage and the power data transmitted by the CPU board and displays the data on the nixie tube.
By adopting the technical scheme, the device can simply, quickly and accurately complete the test of the action power of the intermediate relay; the method has the characteristic of strong universality, adopts slow-applied voltage test, and is suitable for testing various intermediate relays; the voltage value and the current value and the position of the normally open node of the relay are acquired through the single chip microcomputer, the action power of the relay is obtained through the processing of the CPU, the working efficiency is improved, meanwhile, the misjudgment hidden danger existing in the traditional testing method is avoided, and the safe operation capacity of a power grid is improved.
Specifically, as shown in the figure: the panel mainly comprises a first set of measurement display units 6, a second set of measurement display units 7, two sets of action warning lamps 12 and an operation monitoring lamp 14. Wherein, the function of the first group measurement display unit 6 is to display the measured action voltage, action current and action power of the first group intermediate relay; the second group measurement display unit 7 functions to display the measured operation voltage, operation current and operation power of the second group intermediate relay; the two groups of operation monitoring lamps 14 are used for monitoring the operation state of the measuring circuit, and when the green lamp is lighted, the circuit of the measuring circuit is intact; the two groups of action warning lamps 12 are used for informing the maintainer whether the intermediate relay acts or not, and when the red lamp is lighted, the intermediate relay acts.
As shown in fig. 4, the CPU board includes a device CPU, an alarm relay, a power supply, and a safety portion. The CPU of the device has the functions of collecting an auxiliary node of the intermediate relay, calculating the action power (P is U multiplied by I) under the current condition after a normally open node of the intermediate relay is closed, and displaying the action voltage, the action current and the action power on the nixie tube; the alarm relay has the function of lightening an abnormal display lamp (action alarm indicator lamp) of the device when the device is abnormal; the rated power supply of the device is alternating current 220V; when the input voltage of the device is greater than the rated voltage, the fuse 18 breaks down, the power supply is cut off to play a role in protecting the device, and meanwhile, the fuse has a self-recovery function.
As shown in fig. 5 to 6, the circuit board includes a Volt check board (shown in fig. 5) and a Display board (shown in fig. 6). The circuit board realizes that alternating voltage converts adjustable direct voltage into, gathers the break-make of intermediate relay node simultaneously, connects the CPU board, provides basis and data for CPU board calculation. Volt check board: the 0-220V alternating voltage is connected from IN1 and GND, is reduced IN voltage through RA4, is converted into direct current voltage through a rectifying circuit, changes the amplitude of the direct current voltage through an operational amplifier circuit, is sent to an RC1 pin of a single chip microcomputer U7, and acquires voltage IN real time, and acquires current IN real time through an RC2 pin. The single chip microcomputer judges the on-off of the relay node, and if the normally open node is switched on, the single chip microcomputer drives the relay to act and light an action signal lamp. Display panel: the board is a man-machine conversation circuit, receives voltage and current data transmitted by the singlechip and displays the data on the nixie tube db.
As shown in fig. 1, the terminals include two sets of output voltage terminals, two sets of intermediate relay node input terminals, and a set of crowbar grounds (shown below input terminal II, not numbered but shown in position). Wherein the left lower terminal is a safety grounding terminal; the front surface of the device is provided with four pairs of terminals, namely an output wiring terminal I, an input wiring terminal II and an output wiring terminal II2, wherein the input access wiring terminal II is a direct-current voltage output terminal, and the input wiring terminal I and the input wiring terminal II are normally open node input terminals of an intermediate relay; when the normally open node of the intermediate relay is detected to be closed, the action warning red light is lightened to remind a maintainer of the action of the intermediate relay. Preferably, as shown in FIGS. 1-3: the front surface of the shell is provided with a front handle 9, and the side surface of the shell is provided with a heat radiation hole 15 and a side handle 16; the back of the shell is provided with a power supply jack 17 and a safety fuse 18.
While the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes, which relate to the related art known to those skilled in the art and fall within the scope of the present invention, can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (6)
1. The utility model provides an intermediate relay action power automatic check device which characterized in that: the front surface of the shell is a panel, and a CPU board, a circuit board and a wiring terminal are arranged in the shell; the wiring terminal is connected with the circuit board, the circuit board is connected with the CPU board, the CPU board is connected with the panel, the circuit board and the CPU board are fixed in the shell, and the panel and the wiring terminal are fixed on the front surface of the shell;
the panel comprises a first group of measurement display units, a second group of measurement display units, two groups of action warning lamps and an operation monitoring lamp; the first group of measurement display units are used for displaying the measured action voltage, action current and action power of the first group of intermediate relays; the function of the second group of measurement display units is to display the measured action voltage, action current and action power of the second group of intermediate relays; the two groups of operation monitoring lamps are used for monitoring the operation state of the measuring circuit, and when the green lamp is lighted, the circuit of the measuring circuit is intact; the two groups of action warning lamps are used for informing maintainers whether the intermediate relay acts or not, and when the red lamp is lightened, the intermediate relay acts;
the CPU board comprises a device CPU, an alarm relay, a power supply and a fuse;
the circuit board converts alternating voltage into adjustable direct voltage, and the on-off of the intermediate relay node is collected and connected with the CPU board.
2. An automatic checking device of an intermediate relay operation power as claimed in claim 1, characterized in that: the wiring terminal is an external insulation and internal metal universal test wiring terminal and is connected with the circuit board through a flexible conductor; the wiring terminal realizes the safety grounding of the device, the direct-current voltage output and the normally open node input wiring; the panel receives the DC current, DC voltage and power data transmitted by the CPU board and displays the data on the nixie tube.
3. An automatic checking device of an intermediate relay operation power as claimed in claim 1, characterized in that: the CPU of the device collects an auxiliary node of an intermediate relay, calculates the action power under the current condition after a normally open node of the intermediate relay is closed, and displays the action voltage, the action current and the action power on a nixie tube; the alarm relay is used for lighting a device action alarm indicator lamp when the device is abnormal; the rated power supply of the device is alternating current 220V; when the input voltage of the device is greater than the rated voltage, the fuse breaks down; the insurance is insurance with a self-recovery function.
4. An automatic checking device of an intermediate relay operation power as claimed in claim 1, characterized in that: the circuit board comprises a Volt check board and a Display board;
in a Volt check board: the 0-220V alternating voltage is connected from IN1 and GND, is reduced IN voltage through RA4, is converted into direct current voltage through a rectifying circuit, changes the amplitude of the direct current voltage through an operational amplifier circuit, is sent to an RC1 pin of a single chip microcomputer U7, and acquires voltage IN real time, and acquires current IN real time through an RC2 pin. The single chip microcomputer judges the on-off of the relay node, and if the normally open node is switched on, the single chip microcomputer drives the relay to act and light an action alarm indicator lamp;
the Display board is a man-machine conversation circuit, receives voltage and current data transmitted by the singlechip and displays the data on the nixie tube db.
5. An automatic verifying apparatus for an operating power of an intermediate relay according to claim 2, wherein: the wiring terminals comprise two groups of output voltage wiring terminals, two groups of intermediate relay node input terminals and a group of safety ground terminals; the casing openly is provided with output binding post I, input binding post II, output binding post II, and the input inserts binding post II four pairs of terminals, and output binding post I and output binding post II are direct current voltage output terminal, and input binding post I and input binding post II are the intermediate relay normally open node input terminal.
6. An automatic verifying apparatus for an operating power of an intermediate relay as claimed in claim 1, wherein: the front surface of the shell is provided with a front handle, and the side surface of the shell is provided with a heat dissipation hole and a side handle; the back of the shell is provided with a power supply jack and a safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161486.6A CN110794297A (en) | 2019-11-25 | 2019-11-25 | Automatic calibration device for action power of intermediate relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161486.6A CN110794297A (en) | 2019-11-25 | 2019-11-25 | Automatic calibration device for action power of intermediate relay |
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| CN110794297A true CN110794297A (en) | 2020-02-14 |
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| CN201911161486.6A Pending CN110794297A (en) | 2019-11-25 | 2019-11-25 | Automatic calibration device for action power of intermediate relay |
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Application publication date: 20200214 |