CN211376558U - Air switch with power-on monitoring function - Google Patents
Air switch with power-on monitoring function Download PDFInfo
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- CN211376558U CN211376558U CN201922425055.8U CN201922425055U CN211376558U CN 211376558 U CN211376558 U CN 211376558U CN 201922425055 U CN201922425055 U CN 201922425055U CN 211376558 U CN211376558 U CN 211376558U
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Abstract
An air switch with power-on monitoring function comprises a main contact and a contact connecting rod, wherein the main contact is arranged between an input conductive wire and an output conductive wire, the contact connecting rod is matched with the main contact, one end of the contact connecting rod is connected with an air switch shell through a reset spring, a trigger detection switch and a limiting magnetic rod are sequentially arranged in the extending direction of the other end of the contact connecting rod, one end of the limiting magnetic rod is provided with a magnetic attraction coil, one side of the limiting magnetic rod, which faces the contact connecting rod, is provided with a abdicating groove matched with the contact connecting rod, the contact connecting rod sequentially triggers the detection switch, the insertion abdicating groove and the closing main contact, and also comprises an electrifying monitoring system, when the contact connecting rod touches the trigger detection switch, the electrification monitoring system detects whether the connection load exists at the output end of the air switch, the air switch is prevented from being closed when there is an on-load, thereby preventing a safety accident that occurs when there is an on-load at power-up.
Description
Technical Field
The utility model belongs to the technical field of the air switch technique and specifically relates to an air switch with go up electric monitor function is related to.
Background
An air switch, also known as an air circuit breaker, is one type of circuit breaker. The switch can be automatically switched off as long as the current in the circuit exceeds the rated current. Besides the contact and breaking of the circuit can be completed, the short circuit, serious overload and undervoltage of the circuit or electrical equipment can be protected.
The air switch has wide application, can be applied to a low-voltage distribution network, and can also be used as a main switch of a plurality of high-power electric operation sites. For example, in a construction site, the air switch is applied to electric equipment such as an electric saw, an electric drill, a cutting machine, machining equipment and the like, the electric power consumption of the equipment is quite large, so that the air switch is generally additionally arranged at a main power supply position in a construction site to ensure the electric safety.
However, the working environment of the construction site is complex, and some unexpected power failure accidents can happen for a long time. However, after power failure, the switch of the electric equipment is not turned off due to human negligence, if the electric equipment is powered on again, the electric equipment works directly, and under the condition that no staff is prepared in advance or is absent, the safety accident is very easily caused by the powered-on electric equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air switch with go up electric monitor function, this air switch can prevent to have the incident that the switch-on load appears because of going up when the electricity.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides an air switch with power-on monitoring function, including being located the main contact between input conductor wire and the output conductor wire and with main contact complex contact connecting rod, contact connecting rod one end is passed through reset spring and is connected the air switch shell, and the extending direction of the other end has set gradually and has triggered detection switch and spacing magnetic pole, spacing magnetic pole one end is provided with magnetism and inhales the coil, and spacing magnetic pole is provided with the cooperation towards contact connecting rod one side the groove of stepping down of contact connecting rod, the closed air switch in-process, the contact connecting rod triggers in proper order trigger detection switch, insert the groove of stepping down and closing the main contact still including power-on monitored control system, power-on monitored control system includes:
the timing trigger module is connected with the trigger detection switch and outputs a trigger signal with preset time when the trigger detection switch is triggered;
the power supply module is arranged in the air switch, and the output end of the power supply module is connected with the output conducting wire;
the testing module is connected with the power supply module and the timing trigger module, and is communicated with the power supply module and the output conducting wire when receiving a trigger signal;
the current detection module is connected with the output end of the air switch, and is used for detecting the current on the output conducting wire and outputting a current detection signal when the current is detected;
the limiting module is connected with the current detection module, and is used for switching on the magnetic coil and the power supply when receiving a current detection signal;
the magnetic attraction coil is electrified to pull the limiting magnetic rod to move along the direction perpendicular to the moving direction of the contact connecting rod.
By adopting the technical scheme, in the switching-on process of the air switch, the contact connecting rod firstly touches the trigger detection switch, after the trigger detection switch is triggered, the timing trigger module outputs a trigger signal with preset time, so that the power supply module is connected with the output conducting wire, if the output end of the air switch is connected with an unclosed electric load, when the power supply module is connected with the output conducting wire, the electric load is electrified to generate current on the output conducting wire, and after the current detection module detects the current on the output conducting wire, the magnetic attraction coil is connected with the power supply through the limiting module, so that the magnetic attraction coil pulls the limiting magnetic rod to move, the abdicating groove is not arranged on the moving path of the contact connecting rod, and the contact connecting rod is abutted against the limiting magnetic rod after touching the trigger detection switch, so that the main contact cannot be closed continuously, and the safety accident caused by the fact that the load is connected during electrification is prevented.
As the utility model discloses an improvement, spacing module includes spacing triode, the positive pole of power is connected to the collecting electrode of spacing triode, and the projecting pole of spacing triode passes through magnetism inhales coil ground connection, magnetism that the coil was inhaled the magnetism is inhaled auxiliary contact both ends and is connected respectively the collecting electrode and the projecting pole of spacing triode, the basic level of spacing triode is connected the current detection module for receive the current detection signal.
Through adopting above-mentioned technical scheme, because the setting of spacing triode, after spacing module received the current detection signal, the triode switched on, and coil and power are inhaled to the switch-on magnetism, compare in direct magnetism inhale the coil and be connected to the current detection module, and spacing triode has guaranteed the circular telegram power requirement of magnetism and has inhaled the coil, and simultaneously, magnetism is inhaled the coil circular telegram back, and magnetism of magnetism inhales the coil and inhales auxiliary contact closure, has realized the auto-lock of magnetism and has inhaled the coil.
As the improvement of the utility model, still including the shutoff module, the shutoff module is connected trigger detection switch works as when triggering detection switch and not being triggered, disconnection magnetism inhale the coil with the connection of power.
Through adopting above-mentioned technical scheme, when the contact connecting rod no longer touched the trigger detection switch, because the setting of magnetism auxiliary contact is inhaled, the coil is still in the on-state is inhaled to magnetism, will influence air switch's next closure. The setting of turn-off module can realize that the disconnection magnetism is inhaled the coil and is connected with the power when triggering detection switch not triggered to before guaranteeing the air switch closed operation at every turn, magnetism is inhaled the coil and is all in the outage state.
As the utility model discloses an improvement, turn-off the module including turn-off the triode and turn-off the relay, turn-off the collecting electrode connection power positive pole of triode, the projecting pole of turn-off the triode is through the coil ground connection of turn-off the relay, and the basic level of turn-off the triode is connected trigger detection switch, the normally open contact of turn-off the relay concatenates between magnetism suction coil and magnetism suction auxiliary contact.
Through adopting above-mentioned technical scheme, the circular telegram power of turn-off relay has been guaranteed in the setting of turn-off triode for after triggering detection switch was triggered, the coil of turn-off relay can be stably switched on, and the normally open contact of turn-off relay can be stably closed.
As the utility model discloses an improvement, power module is including setting up battery in the air switch and the inverter circuit who is connected with the battery, test module is including test triode and test relay, and the basic level of test triode is connected timing trigger module, the collecting electrode connection power positive pole of test triode, and the projecting pole of test triode passes through test relay's coil ground connection, test relay's normally open contact concatenates the battery with between the inverter circuit.
By adopting the technical scheme, when the test triode is conducted, the coil of the test relay is electrified, the normally open contact of the test relay is closed, and the direct current output by the storage battery is converted into alternating current through the inversion action of the inverter circuit and is communicated with the output conductor wire, so that the electric energy of a certain time is provided for the output end of the air switch through the storage battery.
As an improvement of the present invention, the current detection module includes a current detection unit and a comparison unit, the current detection unit is coupled to the output conductive wire for detecting the current on the output conductive wire and outputting a current sensing signal when detecting that the current is on the output conductive wire; the comparing unit is coupled with the current detecting unit and outputs the current detecting signal when receiving the current detecting signal.
By adopting the technical scheme, the current detection module can realize the detection of the current on the output conducting wire, and when the current detection module detects the current, a stable current detection signal is output through the comparison unit.
As an improvement of the utility model, the comparing unit includes the current comparator, the positive input end of current comparator is coupled the current detection unit for receive the current sense signal, the negative pole of power is coupled to the inverting input end of current comparator.
By adopting the technical scheme, as the reverse input end of the current comparator is coupled with the cathode of the power supply, when the current comparator receives the current sensing signal, the output end of the comparator outputs a high-level current detection signal.
As the utility model discloses an improvement, the current detection unit is including coupling the detection coil of output conductor wire and the reverse amplifier circuit who is connected with the detection coil, reverse amplifier circuit's output is exported current sensing signal.
By adopting the technical scheme, when the current exists on the output conducting wire, the current induced by the detection coil generates electromotive force and outputs the induced current to the reverse amplification circuit, and the reverse amplification circuit outputs a current induction signal in a voltage form according to the current output by the detection coil.
To sum up, the utility model discloses a following at least one useful technological effect:
the cooperation of the trigger detection switch and the storage battery can realize the detection of the current on the output conductive wire of the air switch in the closing process of the air switch, and if the air switch is connected with a switch-on load, the air switch can be prevented from being continuously closed, so that the power-on safety of the electric equipment is ensured.
Drawings
Fig. 1 is a schematic diagram of the position structure of a contact connecting rod, a trigger detection switch and a limit magnetic rod.
FIG. 2 is a diagram of a power-up monitoring system.
Fig. 3 is a state diagram of the switch after the limit magnetic rod moves.
Fig. 4 is a diagram showing the contact link inserted into the limit magnetic rod in an open/close state.
In the figure, 11, input conductive lines; 12. a main contact; 13. an output conductive line; 14. a contact connecting rod; 15. triggering a detection switch; 16. magnetically attracting the coil; 161. a yielding groove; 2. a power supply module; 3. a test module; 4. a current detection module; 41. a detection coil; 5. a limiting module; 6. and turning off the module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses an air switch with go up electric monitor function, including being located input conductor wire 11 and output conductor wire 13 between main contact 12 and with main contact 12 complex contact connecting rod 14, reset spring connection air switch shell is passed through to contact connecting rod 14 one end, the extending direction of the other end has set gradually and has triggered detection switch 15 and spacing magnetic pole, spacing magnetic pole one end is provided with magnetism and inhales coil 16, spacing magnetic pole is provided with the groove 161 of stepping down that cooperates contact connecting rod 14 towards contact connecting rod 14 one side. The trigger detection switch 15 is set as a travel switch, a trigger contact of the trigger detection switch 15 is located on a moving path of the contact connecting rod 14, the magnetic attraction coil 16 is electrified to pull the limiting magnetic rod to move along a direction perpendicular to the moving direction of the contact connecting rod 14, in the process of closing the air switch, the contact connecting rod 14 sequentially touches the trigger contact of the trigger detection switch 15, the insertion abdicating groove 161 and the closing main contact 12, referring to fig. 3, when the magnetic attraction coil 16 is electrified, the limiting magnetic rod moves, and the contact connecting rod 14 cannot be inserted into the abdicating groove 161. The trigger detection switch 15 is connected with a power-on monitoring system, and when the trigger detection switch 15 is triggered, the power-on monitoring system detects a switch-on load at the output end of the air switch, and controls the magnetic coil 16 to be powered on when the switch-on load exists.
Referring to fig. 2, the power-on monitoring system includes:
the timing trigger module is connected with the trigger detection switch 15, and outputs a trigger signal with preset time when the trigger detection switch 15 is triggered;
the power supply module 2 is arranged in the air switch, and the output end of the power supply module 2 is connected with the output conducting wire 13;
the testing module 3 is connected with the power supply module 2 and the timing trigger module, and is communicated with the power supply module 2 and the output conducting wire 13 when receiving a trigger signal;
the current detection module 4 is connected with the output end of the air switch, and is used for detecting the current on the output conducting wire 13 and outputting a current detection signal when the current is detected;
the limiting module 5 is connected with the current detection module 4, and is used for switching on the magnetic coil 16 and the power supply when receiving a current detection signal;
the magnetic attraction coil 16 is electrified to pull the limiting magnetic rod to move along the direction perpendicular to the moving direction of the contact connecting rod 14.
The timing trigger module is preferably a 555 timing trigger circuit, and the input end of the timing trigger module is connected with the positive electrode of the power supply through the trigger detection switch 15. When the trigger detection switch 15 is triggered, the input end of the timing trigger module is connected to the positive pole of the power supply, and the timing trigger module outputs a high-level trigger signal of a preset time after connecting the positive pole of the power supply. Here, the predetermined time should be set according to the distance between the trigger detection switch 15 and the limit magnetic induction as small as possible, and the predetermined time is preferably not more than ten centiseconds.
The testing module 3 comprises a testing triode Q1 and a testing relay, the base level of the testing triode Q1 is connected with the output end of the timing triggering module, the collector electrode of the testing triode Q1 is connected with the positive electrode of a power supply, and the emitter electrode of the testing triode Q1 is grounded through a coil KM1 of the testing relay. When the base of the test transistor Q1 receives the trigger signal, the test transistor Q1 is turned on, so that the coil KM1 of the test relay is energized.
The power module 2 comprises a storage battery arranged in the air switch and an inverter circuit connected with the storage battery, and the output end of the inverter circuit is connected with the output conducting wire 13. And a normally open contact KM1-1 of the test relay is connected in series between the power module 2 and the inverter circuit. When the coil KM1 of the test relay is electrified, the normally open contact KM1-1 is closed, the electric quantity in the storage battery is connected to the output conducting wire 13 through the inverter circuit, and therefore the output end of the air switch is connected with a connection load, the connection load is connected with the storage battery, and the output conducting wire 13 generates current.
The current detection module 4 comprises a detection coil 41, a reverse amplification circuit and a current comparator D1 which are connected with the detection coil 41, wherein the detection coil 41 is wound on the single output conducting wire 13, one terminal of the detection coil 41 is connected with the negative electrode of a power supply, the other terminal of the detection coil is connected with the input end of the reverse amplification circuit, the output end of the reverse amplification circuit is connected with the positive input end of the current comparator, and the reverse input end of the current comparator D1 is connected with the negative electrode of the power supply. When current is generated on the output conducting wire 13, the detection coil 41 senses the current on the output conducting wire 13 to generate induction current and outputs the induction current to the inverse amplifying circuit, the inverse amplifying circuit outputs a current sensing signal in a voltage form after receiving the induction current output by the detection coil 41, because the inverse input end of the current comparator D1 is connected with the negative electrode of the power supply, when the positive input end of the current comparator D1 receives the current sensing signal, the output end of the current comparator D1 outputs a high-level current detection signal.
The magnetic-type power supply device further comprises a turn-off module 6, wherein the turn-off module 6 comprises a turn-off triode Q3 and a turn-off relay, a collector of the turn-off triode Q3 is connected with the positive electrode of a power supply, an emitter of the turn-off triode Q3 is grounded through a coil KM2 of the turn-off relay, a base level of the turn-off triode Q3 is connected with the trigger detection switch 15, and a normally-open contact KM2-1 of the turn-off relay is connected in series between the magnetic-attraction coil 16. When the trigger detection switch 15 is not triggered, the turn-off triode Q3 is not conducted, the coil KM2 of the turn-off relay is powered off, and the normally open contact KM2-1 is disconnected, so that the magnetic attraction auxiliary contact K2 of the magnetic attraction coil 16 is prevented from being closed to cause the self-locking energization of the magnetic attraction coil 16.
As can be seen from the above, during the closing of the air switch, the contact link 14 first touches the trigger contact of the trigger detection switch 15, and after the trigger detection switch 15 is triggered, the battery is connected to the output conductive line 13. If the output end of the air switch is connected with a switch-on load, the output conductive wire 13 generates current, the magnetic attraction coil 16 is electrified and pulls the limiting magnetic induction to move, so that the contact connecting rod 14 cannot be inserted into the abdicating groove 161, namely, the main contact 12 cannot be closed, and safety accidents caused by the switch-on load existing during electrification are prevented; referring to fig. 4, when the output end of the air switch is not connected to a switch-on load, no current is generated on the output conductive wire 13, the magnetic coil 16 is not energized, and the contact link 14 will continue to be sequentially inserted into the abdicating slot 161 and close the main contact 12 during the moving process.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides an air switch with power-on monitoring function which characterized in that: including main contact (12) that is located between input conductor (11) and the output conductor (13) and with main contact (12) complex contact connecting rod (14), reset spring connection air switch shell is passed through to contact connecting rod (14) one end, and the extending direction of the other end has set gradually and has triggered detection switch (15) and spacing magnetic pole, spacing magnetic pole one end is provided with magnetism and inhales coil (16), and spacing magnetic pole is provided with the cooperation towards contact connecting rod (14) one side recess (161) of contact connecting rod (14), the closed air switch in-process, contact connecting rod (14) trigger in proper order trigger detection switch (15), insert recess (161) and closure main contact (12), still including last monitored control system, it includes to go up monitored control system:
the timing trigger module is connected with the trigger detection switch (15), and outputs a trigger signal with preset time when the trigger detection switch (15) is triggered;
the power supply module (2) is arranged in the air switch, and the output end of the power supply module (2) is connected with the output conducting wire (13);
the testing module (3) is connected with the power supply module (2) and the timing trigger module, and is used for communicating the power supply module (2) with the output conducting wire (13) when receiving a trigger signal;
a current detection module (4), wherein the current detection module (4) comprises a current detection unit and a comparison unit, the current detection unit is coupled to the output conductive line (13) and is used for detecting the current on the output conductive line (13) and outputting a current induction signal when the current on the output conductive line (13) is detected; the comparison unit is coupled with the current detection unit and outputs a current detection signal when receiving the current detection signal;
the limiting module (5) is connected with the current detection module (4), and is used for switching on the magnetic coil (16) and a power supply when receiving a current detection signal;
the magnetic attraction coil (16) is electrified to pull the limiting magnetic rod to move along the direction perpendicular to the moving direction of the contact connecting rod (14).
2. An air switch with power-on monitoring function according to claim 1, characterized in that: the limiting module (5) comprises a limiting triode, a collector of the limiting triode is connected with the positive electrode of a power supply, an emitting electrode of the limiting triode is connected with the ground of the magnetic attraction coil (16), two ends of the magnetic attraction auxiliary contact of the magnetic attraction coil (16) are respectively connected with the collector and the emitting electrode of the limiting triode, and a base level of the limiting triode is connected with the current detection module (4) and used for receiving the current detection signal.
3. An air switch with power-on monitoring function according to claim 2, characterized in that: the magnetic attraction type power supply is characterized by further comprising a turn-off module (6), wherein the turn-off module (6) is connected with the trigger detection switch (15), and when the trigger detection switch (15) is not triggered, the magnetic attraction type coil (16) is disconnected from the power supply.
4. An air switch with power-on monitoring function according to claim 3, characterized in that: the turn-off module (6) comprises a turn-off triode and a turn-off relay, a collector of the turn-off triode is connected with the positive electrode of a power supply, an emitter of the turn-off triode is grounded through a coil of the turn-off relay, a base level of the turn-off triode is connected with the trigger detection switch (15), and a normally open contact of the turn-off relay is connected in series between the magnetic attraction coil (16) and the magnetic attraction auxiliary contact.
5. An air switch with power-on monitoring function according to claim 1, characterized in that: the power supply module (2) comprises a storage battery arranged in the air switch and an inverter circuit connected with the storage battery, the testing module (3) comprises a testing triode and a testing relay, the base level of the testing triode is connected with the timing trigger module, a collector electrode of the triode is connected with a power supply anode, an emitter electrode of the triode passes through a coil of the testing relay and is grounded, and a normally open contact of the testing relay is connected in series between the storage battery and the inverter circuit.
6. An air switch with power-on monitoring function according to claim 1, characterized in that: the comparing unit comprises a current comparator, a positive input end of the current comparator is coupled with the current detecting unit and used for receiving the current sensing signal, and an inverted input end of the current comparator is coupled with a negative electrode of a power supply.
7. An air switch with power-on monitoring function according to claim 1, characterized in that: the current detection unit comprises a detection coil (41) coupled with the output conductive wire (13) and an inverse amplification circuit connected with the detection coil (41), and the output end of the inverse amplification circuit outputs the current induction signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922425055.8U CN211376558U (en) | 2019-12-27 | 2019-12-27 | Air switch with power-on monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922425055.8U CN211376558U (en) | 2019-12-27 | 2019-12-27 | Air switch with power-on monitoring function |
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| CN211376558U true CN211376558U (en) | 2020-08-28 |
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| CN201922425055.8U Expired - Fee Related CN211376558U (en) | 2019-12-27 | 2019-12-27 | Air switch with power-on monitoring function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112241191A (en) * | 2020-09-16 | 2021-01-19 | 北京伟仕天成科技有限公司 | Novel power module |
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2019
- 2019-12-27 CN CN201922425055.8U patent/CN211376558U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112241191A (en) * | 2020-09-16 | 2021-01-19 | 北京伟仕天成科技有限公司 | Novel power module |
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