CN207835054U - Anti-error short circuit secondary circuit attachment device - Google Patents
Anti-error short circuit secondary circuit attachment device Download PDFInfo
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- CN207835054U CN207835054U CN201820273769.4U CN201820273769U CN207835054U CN 207835054 U CN207835054 U CN 207835054U CN 201820273769 U CN201820273769 U CN 201820273769U CN 207835054 U CN207835054 U CN 207835054U
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- circuit
- current detection
- detection circuit
- short circuit
- circuit module
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Abstract
The utility model discloses a kind of anti-error short circuit secondary circuit attachment device, including crust of the device, current detection circuit module, resistance and indicator light connected in sequence are provided in described device shell；The current supply circuit of the current detection circuit module includes concatenated switch and battery, the display screen of the indicator light, switch and current detection circuit module is arranged in the front of described device shell, the wire end connected on the outside of the current detection circuit module and indicator light be connected with for wait for the loop-coupled insulating end of short circuit.The utility model has Highgrade integration, intelligentized characteristic, direct-current secondary circuit for various purposes is all suitable for, with display and prompt facility, application method is simple, and operating procedure is few, it is reliable using process safety, user is required without too many, it is easy to use, the risk of straight-flow system positive and negative anodes short circuit can be effectively eliminated, it relieves fatigue, improves working efficiency.
Description
Technical field
The utility model is related to a kind of anti-error short circuit secondary circuit attachment devices.
Background technology
Protection teams and groups of power system power supply department serve as the maintenance of more substation secondary devices, and routine work includes fixed
The work such as inspection, defect elimination, technological transformation, examination, anti-accident measures, most of work are directed to carry out short circuit experiment to secondary circuit（Such as
Triggering, simulation intake triggering of signal etc.）, in this process, there is short circuit mistakes to cause DC loop positive and negative extremely short
The risk on road, as shown in Figure 4：In mimic-disconnecting switch SF6When the action of density monitor contact transmits, correct short circuit mode is short
It connects between No. 1 terminal and No. 2 terminals, positive electricity is skipped into contact and guides to 1 end of intermediate relay loop A.But at work if
In the case that rubber head mark is unclear, drawing data lacks, terminal block visually has difference in height, personnel lack experience, pole has can
No. 1 terminal and No. 3 terminal short circuits can be caused DC loop positive and negative anodes short-circuit, cause direct current air switch to trip, even result in
Staff is by flash burn so that staff generates the psychology of fear, increases psychological pressure, and when work needs to crosscheck figure
Paper is confirmed, working efficiency is reduced.
The short circuit of secondary circuit can cause damages to running straight-flow system, and then threaten the safety of entire power grid
Stable operation, or even the personal safety of staff is jeopardized, cause prodigious pressure to shift management.For that purpose it is necessary to look for
To a kind of tool or method to solve the problems, such as this, during secondary circuit short circuit is tested, it is positive and negative extremely short to eliminate straight-flow system
The risk on road.
Utility model content
Technical problem to be solved in the utility model is to overcome defect described above, provides a kind of self-powered, volume
Small volume and less weight, the anti-error short circuit secondary circuit attachment device that operation difficulty is low, highly practical.
In order to solve above institute's art technical problem, anti-error short circuit secondary circuit attachment device described in the utility model, including
Crust of the device is provided with current detection circuit module, resistance and indicator light connected in sequence in described device shell；The electric current
The current supply circuit of detection circuit module includes concatenated switch and battery, the indicator light, switch and current detection circuit module
Display screen be arranged in the front of described device shell, the conducting wire end connected on the outside of the current detection circuit module and indicator light
End be connected with for wait for the loop-coupled insulating end of short circuit.
Further, current detection circuit module described in the utility model uses the current detection circuit based on Fundamentals of Mono-Chip Computers
Module.
The utility model uses the current detection circuit module based on Fundamentals of Mono-Chip Computers, and it is big which can detect electric current
It is small, and control normally opened, normally closed contact break-make；When the anti-error short circuit secondary circuit attachment device is accessed circuit both ends, electric current
First flow through detection unit（Current detection circuit module）, module normally closed contact, resistance, LED light, at this time circuit although connect
It is logical, but string has quota electric resistance partial pressure in circuit, and former return circuit can not achieve, while detection unit（Current detection circuit module）
Size of current is detected, if meeting definite value requirement, normally-closed contact disconnects, normally opened contact is closed, and thoroughly connects circuit.Measuring circuit
Both ends detection stream overcurrent, current detection circuit module repeat circuit is attracted after program judges no short-circuit risks, connects normally opened touch
Point short circuit circuit, it is all automatic to realize, it is not necessarily to manual operation, reduces risk, improves efficiency.
The beneficial effects of the utility model：The utility model is cut-off using one-chip computer module detection electric current, starting relay
The advantages of contact has Highgrade integration, intelligentized characteristic, has taken into account the scope of application and simple operation, to for various purposes
Direct-current secondary circuit is all suitable for, and there is display and prompt facility it is complete that circuit may be implemented during secondary circuit short circuit is tested
Complete independent connection, centre is without other elements；Application method is simple, and operating procedure is few, reliable using process safety, to user without
It is too many to require, it is easy to use, the risk of straight-flow system positive and negative anodes short circuit can be effectively eliminated, is relieved fatigue, working efficiency is improved.
Description of the drawings
Fig. 1 is the surface structure schematic diagram of the utility model；
Fig. 2 is the circuit theory schematic diagram of the utility model；
Fig. 3 is the logic diagram of the utility model；
Fig. 4 is short circuit secondary circuit schematic diagram.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
Anti-error short circuit secondary circuit attachment device described in the utility model, including crust of the device 7, in described device shell 7
It is provided with current detection circuit module 1, resistance 2 and indicator light 3 connected in sequence；The power supply of the current detection circuit module 1
Circuit includes concatenated switch 4 and battery 5, and the display screen 6 of the indicator light 3, switch 4 and current detection circuit module 1 is arranged
In the front of described device shell 7, the wire end of 3 outside connection of the current detection circuit module 1 and indicator light is connected with
For with wait for the loop-coupled insulating end of short circuit 8.
Further, current detection circuit module 1 described in the utility model is using the current detecting electricity based on Fundamentals of Mono-Chip Computers
Road module.
Embodiment：
Current detection circuit module 1 described in the utility model uses YYI-2 type current detection modules, has higher electric current
The range of sampling precision and bigger can cut-off the function of circuit, eliminate the step of needing external DC relay, simplify whole
A circuit structure, and reduce the volume of device；
Resistance 2 has the advantages that good heat dissipation, with high accuracy, resistance measurement using by glaze enamel coiling ceramics power resistor
For 1000 Ω, 220V DC voltages can be born in short-term, are met the requirements；
Indicator light 3 selects LED lamp bead, has higher brightness, longer service life and lower power consumption；
Switch 4 switchs for ship type, node capacity 3A, reliable to disconnect and contact, and meets countermeasure target call；
Battery 5 uses 12V alkaline batteries, alkaline battery voltage output to stablize, and compact is easy to carry, the continuous work of device
It is long to make the time（Not less than 5h）；
According to reliable principle is connected, insulating end 8 selects pin type pre insulated end, and is attached after conductor compression jointing；
Connecting wire should meet burden requirement when instrument works normally and there are nargin, small in view of reserved space in crust of the device box body,
According to mechanical strength and electrical performance demands, softer multiply soft copper core wire is selected（2.5mm2Multiply soft copper core wire）It is more conducive to connect
Line.
Associated components are connected according to Fig. 2 circuit diagrams, in charging apparatus shell 7, LED lamp bead, ship type switch and electricity
The display screen 6 of current detection circuit module is arranged to be connected on the outside of the front of crust of the device 7, current detection circuit module 1 and LED lamp bead
The end of the conducting wire 9 connect is connect with pin type pre insulated end 8, is facilitated and is connect with short circuit circuit when body examination.
In Fig. 2, third side's frame portion is divided into current detection circuit module 1, which can detect size of current, and controls normal
It opens, normally closed contact break-make, dotted box portion is current detection circuit module current supply circuit figure in figure.The device is accessed into circuit two
When end, shown in the arrow in current direction such as figure on conducting wire, electric current first flows through detection unit, module normally closed contact, power electricity
Resistance, LED light, although circuit is connected at this time, string has quota electric resistance partial pressure, former return circuit can not achieve in circuit, together
When detection unit detect size of current, if meet definite value requirement, normally-closed contact disconnect, normally opened contact be closed, thoroughly connect back
Road.
Use step（Referring to attached drawing 3）：
1, device for opening power supply, 6 bright screen of display screen, is shown as 0.00 at this time；
2, experiment wire terminal 8 is shorted to and waits for short circuit circuit both ends, if then flowing through electric current within definite value section, explanation
Circuit both ends are direct current positive and negative electrode, then current detection circuit module control relay is failure to actuate, by resistance 2 and finger in circuit
Show lamp 3, indicator light is bright, sends out alarm signal, indicates that there are short-circuit risks in circuit, does not connect directly；If flowing through electric current in definite value area
Between except, illustrate in circuit that also string has other elements, there is no short circuit may, then module controls the actuating of relay, disconnects normally closed
Contact is closed normally opened contact, directly connects circuit（Display screen has reading at this time, but indicator light does not work）.
The use of the utility model eliminates the wind of staff's straight-flow system positive and negative anodes short circuit in short circuit secondary circuit
Danger, improves work efficiency, improves the safety and reliability of secondary circuit in the process of running to a certain extent；Alleviate
Psychological pressure of the staff in short circuit secondary circuit, meets man-machine efficacy requirement.
Claims (2)
1. a kind of anti-error short circuit secondary circuit attachment device, including crust of the device（7）, which is characterized in that described device shell（7）
Inside it is provided with current detection circuit module connected in sequence（1）, resistance（2）And indicator light（3）；The current detection circuit module
（1）Current supply circuit include concatenated switch（4）And battery（5）, the indicator light（3）, switch（4）With current detection circuit mould
Block（1）Display screen（6）It is arranged in described device shell（7）Front, the current detection circuit module（1）And indicator light
（3）Outside connection wire end be connected with for wait for the loop-coupled insulating end of short circuit（8）.
2. anti-error short circuit secondary circuit attachment device according to claim 1, which is characterized in that the current detection circuit mould
Block（1）Using the current detection circuit module based on Fundamentals of Mono-Chip Computers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820273769.4U CN207835054U (en) | 2018-02-26 | 2018-02-26 | Anti-error short circuit secondary circuit attachment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820273769.4U CN207835054U (en) | 2018-02-26 | 2018-02-26 | Anti-error short circuit secondary circuit attachment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207835054U true CN207835054U (en) | 2018-09-07 |
Family
ID=63398625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820273769.4U Active CN207835054U (en) | 2018-02-26 | 2018-02-26 | Anti-error short circuit secondary circuit attachment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207835054U (en) |
-
2018
- 2018-02-26 CN CN201820273769.4U patent/CN207835054U/en active Active
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