CN210297233U - Forced grounding detection protection device for electric equipment - Google Patents
Forced grounding detection protection device for electric equipment Download PDFInfo
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- CN210297233U CN210297233U CN201921460495.0U CN201921460495U CN210297233U CN 210297233 U CN210297233 U CN 210297233U CN 201921460495 U CN201921460495 U CN 201921460495U CN 210297233 U CN210297233 U CN 210297233U
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Abstract
The utility model discloses a forced ground connection of consumer detects protection device is that power supply circuit and drive circuit interconnect, drive circuit and action output circuit interconnect, and drive circuit, action output circuit still are connected with state display circuit respectively, and power supply circuit still is connected with action output circuit, the utility model has the characteristics of automatic detection reliably ground connection, prevent to not connect protection line work, avoid the electric shock accident to take place with electrical apparatus.
Description
Technical Field
The utility model belongs to the technical field of power consumption safety arrangement, especially, relate to a power consumption equipment forces ground connection detection protection device.
Background
The electric energy is used as a conventional energy source, brings great convenience to human beings, and can also cause human disasters such as burning out electric appliances, causing fire disasters, or causing electric shock injury or even death if the electric energy is not used according to regulations. In the use of electric energy, various regulations such as necessary grounding protection are provided in the country, and a good grounding can avoid a lot of unnecessary loss, but many constructors or equipment users do not do the same according to the requirements, such as no grounding wire of electric equipment, no leakage protector and the like. When the electric leakage fault occurs to the electric appliance, people have the risk of electric shock. And special enterprise equipment such as a dry ice cleaning machine is small in size, movable and powered by 220V mains supply. The equipment can be safely used only by reliable grounding, because the dry ice and the high-pressure air can generate high-voltage static electricity when flowing in a pipeline at a high speed, and operators can get an electric shock and are dangerous, so the equipment can not work (real-time monitoring and control) without reliable grounding, and the product is applied to a dry ice cleaning machine. People all realize earth-leakage protection's importance at present, multiple earth-leakage protector has appeared, the function of tripping is just tripped in the electric leakage has been realized, but earth-leakage protector has a defect and potential safety hazard of coming from life to life, when equipment shell is electrified, and equipment does not have the earth connection, human touch equipment shell, the electric current directly switches on through the human body, earth-leakage protector tripping operation this time, but the floodgate on the earth-leakage protector is mechanical type, the possibility that has not jumped to open takes place, so set up the test button who presses once per month on the earth-leakage protector, a possibility that is used for preventing not jumping takes place. And the leakage protectors sold on the market are 1P + N and 2P, have strict requirements on wiring, and many users have the possibility of wiring errors.
Disclosure of Invention
An object of the utility model is to improve the not enough of prior art and provide an automatic detect reliable ground connection, prevent to use electrical apparatus not to connect protection line work, avoid the electrical leakage electric shock accident to take place with the electrical apparatus and force ground connection detection protection device.
The utility model aims at realizing like this, a power consumption equipment forces ground connection to detect protection device, its characteristics are including power supply circuit, drive circuit, action output circuit and state display circuit, wherein:
the power supply circuit is used for converting externally input 220V alternating current into direct current and serving as a power supply of the driving circuit and the action output circuit;
the driving circuit is used for connecting a starting button, a stopping button, an external power supply live wire, a zero line and a ground wire of the electric equipment; when a start button of the electric equipment is pressed, generating high level and outputting the high level to the action output circuit; when the ground wire of the external power supply is disconnected or a stop button of the electric equipment is pressed, the high level is not output to the action output circuit, and the action output circuit is recovered to the initial state;
the action output circuit is used for connecting a metal shell of the electric equipment and a power supply end of the electric appliance of the electric equipment, and outputs an external 220V alternating current power supply of the driving circuit to the electric equipment through two wiring terminals to supply power to the electric equipment when receiving the high level of the driving circuit, and simultaneously connects the metal shell of the electric equipment and a ground wire of the external power supply together to realize final protection; when the action output circuit does not receive the high level of the driving circuit, the action output circuit keeps the initial state, namely the power supply of the electric equipment is cut off;
the state display circuit is used for displaying the working state of the device, and when the live wire and the zero line of the external power supply are connected normally, a lamp is turned on to indicate that the power supply is normal; when the action output circuit outputs 220V power to the electric equipment, the other lamp is turned on, which indicates that the external grounding wire is normal and the electric equipment works normally.
To further achieve the object of the present invention, the 1-pin of the connection terminal U2 of the driving circuit may be connected to the positive electrode of the diode D2, the 2-pin of the integrated circuit U6 of the power supply circuit, the 9-pin of the RELAY2 of the operation output circuit, the common terminal of the resistor R2 of the status display circuit, the 2-pin of the connection terminal U2 may be connected to the positive electrode of the diode D1, the 1-pin of the integrated circuit U6 of the power supply circuit, the 8-pin of the RELAY2 of the operation output circuit, the common terminal of the 2-and 4-pins of the light emitting diode D3 of the status display circuit, the 3-pin of the connection terminal U2 may be connected to the common terminal of the 1-pin of the connection terminal U5, the 2-pin of the connection terminal U5 may be connected to the 1-pin of the connection terminal U4, the 9-pin of the RELAY1 of the operation output circuit, the 2-pin of the connection terminal U4 may be connected to the common terminal R1, the common terminal of the RELAY 4-pin and the common terminal of the RELAY 46, A pin 16 of the RELAY RELAY2, a pin 4 of an integrated circuit U6 of a power circuit, the other end of the safety capacitor C1 is connected with the negative electrode of a diode D1, the negative electrode of a diode D2 and the common end of the base electrode of the triode VT, the collector of the triode VT is connected with a pin 3 of the integrated circuit U6 of the power circuit, and the emitter of the triode VT is connected with a pin 1 of the RELAY RELAY1 of the action driving circuit and a pin 1 of the RELAY RELAY 2;
the power supply circuit is characterized in that a pin 1 of an integrated circuit U6 is connected with a pin 2 of a connecting terminal U2 of a driving circuit, a pin 4 of a light emitting diode D3 of a state display circuit, a pin 1 of a connecting terminal U2 of the driving circuit pin 2, a pin 9 of a RELAY RELAY2 of an action output circuit, a resistor R2 of the state display circuit, a pin 3 is connected with a collector electrode of a triode VT of the driving circuit pin 4, a pin 16 of a RELAY RELAY1 of the action output circuit pin 4, a pin 16 of a RELAY RELAY2, and a common end of the resistor R1 and a common end of a capacitor C1 in the driving circuit;
the state display circuit is characterized in that one end of a resistor R2 is connected with a pin 2 of an integrated circuit U6 of the power circuit, the anode of a diode D2 of the driving circuit and a pin 1 of a wiring terminal U2, the other end of the resistor R2 is connected with a pin 3 of a light-emitting diode D3, one end of a resistor R3 is connected with a pin 1 of a wiring terminal U3 of the action output circuit and a pin 13 of a RELAY RELAY2, the other end of a resistor R3 is connected with a pin 1 of a light-emitting diode D3, pins 2 and 4 of the light-emitting diode D3 are connected with a pin 1 of an integrated circuit U6 of the power circuit, a pin 2 of a wiring terminal U2 of the driving circuit and a pin 8 of a RELAY RELAY 46;
the action output circuit is characterized in that a pin 1 of a connecting terminal U3 is connected with a pin 13 of a RELAY RELAY2, a resistor R3 of a state display circuit, a pin 2 is connected with a pin 4 of a RELAY RELAY2, a pin 3 is connected with a pin 8 of a RELAY RELAY1, pins 1 of RELAYs RELAY1 and RELAY2 are connected with triode emitters of a driving circuit, pins 4 and 13 of a RELAY RELAY1 are connected with a pin 2 of a driving circuit connecting terminal U4, a pin 9 is connected with a pin 1 of a driving circuit connecting terminal U4, pins 16 of RELAYs RELAY1 and RELAY2 are connected with a pin 4 of an integrated circuit U6 of a power circuit, a common end of a resistor R1 and a capacitor C1 of the driving circuit, and a pin 8 of a RELAY RELAY2 is connected with a pin 2 and a pin 4 of a light emitting diode D3 of the state display circuit, and a pin 9 is connected with a pin 1 of a diode D2.
Compared with the prior art, the utility model has the following characteristics of showing and positive effect: the utility model discloses constitute by devices such as resistance, electric capacity, diode, triode, relay, use with earth-leakage protector cooperation, compensate the blank of equipment forced installation earth connection, forced equipment must the earth connection could work, ensure user's user equipment safety, the utility model discloses the cost is lower, and the volume is less, and fundamentally cuts out the emergence of electric shock accident, has solved electric leakage electric shock protection problem, and no electric shock incident takes place again, and then protects the lives and property, and the consumer that has metal casing all can use, and application prospect is very considerable. The device is composed of micropower devices, has extremely low energy consumption, few devices, low cost and extremely high stability, the light-emitting diodes respectively indicate the states of the modules, the device skillfully controls the on-off state of the triode by releasing current of about 0.5 milliampere to the ground wire, and then the final result is realized by controlling the action of the relay. If the live wire and the zero wire of the peripheral power supply are reversely connected, the device works normally and is not influenced, for example, a two-hole plug is selected and can be independently externally connected with a ground wire.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is an electronic circuit diagram of the present invention.
Detailed Description
Referring to fig. 1, a power supply circuit 1 is interconnected with a drive circuit 2, the drive circuit 2 is interconnected with an operation output circuit 3, the drive circuit 2 and the operation output circuit 3 are also connected with a state display circuit 4, respectively, the power supply circuit 1 is also connected with the operation output circuit 3, wherein:
the power supply circuit 1 is used for converting an externally input 220V alternating current into a direct current and is used as a power supply for the driving circuit 2 and the action output circuit 3;
the driving circuit 2 is used for connecting a starting button, a stopping button, an external power supply live wire, a zero line and a ground wire of the electric equipment; when a start button of the electric equipment is pressed, high level is generated and output to the action output circuit 3; when the ground wire of the external power supply is disconnected or a stop button of the electric equipment is pressed, the high level is not output to the action output circuit 3, and the action output circuit 3 is recovered to the initial state;
the action output circuit 3 is used for connecting a metal shell of the electric equipment and a power supply end of an electric appliance of the electric equipment, when receiving the high level of the driving circuit 2, the action output circuit 3 outputs an external 220V alternating current power supply of the driving circuit 2 to the electric equipment through two wiring terminals for supplying power, and simultaneously connects the metal shell of the electric equipment and a ground wire of the external power supply together to realize final protection; when the operation output circuit 3 does not receive the high level of the drive circuit 2, the operation output circuit maintains the initial state, namely cuts off the power supply of the electric equipment;
the state display circuit 4 is used for displaying the working state of the device, when the live wire and the zero line of the external power supply are connected normally, a lamp is turned on to indicate that the power supply is normal; when the action output circuit 3 outputs 220V power to the electric equipment, the other lamp is turned on, which indicates that the external grounding wire is normal and the electric equipment works normally.
Referring to fig. 2, the 1-pin terminal of the connection terminal U2 of the drive circuit 2 is connected to the anode of the diode D2, the 2-pin terminal of the integrated circuit U6 of the power circuit 1, the 9-pin terminal of the RELAY2 of the operation output circuit 3, the common terminal of the resistor R2 of the status display circuit 4, the 2-pin terminal of the connection terminal U2 is connected to the anode of the diode D1, the 1-pin terminal of the integrated circuit U6 of the power circuit 1, the 8-pin terminal of the RELAY2 of the operation output circuit 3, the common terminal of the 2-and 4-pins of the light emitting diode D3 of the status display circuit 4, the 3-pin terminal U2 is connected to the 1-pin terminal U5, the 2-pin terminal U5 is connected to the 1-pin terminal U4, the 9-pin terminal of the RELAY1 of the operation output circuit 3, the 2-pin terminal R1 of the connection terminal U4, the common terminal of the RELAY1 and the common terminal 13-pin of the operation drive circuit 2, and the other terminal R1 of the operation output resistor R1, A pin 16 of the RELAY RELAY2, a pin 4 of an integrated circuit U6 of the power circuit 1, the other end of the safety capacitor C1 is connected with the negative electrode of a diode D1, the negative electrode of a diode D2 and the common end of the base electrode of the triode VT, the collector electrode of the triode VT is connected with a pin 3 of the integrated circuit U6 of the power circuit 1, and the emitter electrode of the triode VT is connected with a pin 1 of the RELAY RELAY1 and a pin 1 of the RELAY RELAY2 of the action driving circuit 2;
the power supply circuit 1 is characterized in that a pin 1 of an integrated circuit U6 is connected with a pin 2 of a connecting terminal U2 of a driving circuit 2, a pin 4 of a light emitting diode D3 of a state display circuit 4, a pin 1 of a connecting terminal U2 of the driving circuit 2 is connected with a pin 2 of a RELAY RELAY2 of an action output circuit 3, a resistor R2 of the state display circuit 4, a pin 3 is connected with a collector electrode of a triode VT of the driving circuit 2, a pin 4 is connected with a pin 16 of a RELAY RELAY1 of the action output circuit 3, a pin 16 of a RELAY RELAY2, and a common end of a resistor R1 and a capacitor C1 in the driving circuit;
the state display circuit 4 is characterized in that one end of a resistor R2 is connected with a pin 2 of an integrated circuit U6 of the power circuit 1 and the anode of a diode D2 of the drive circuit 2, the other end of the resistor R2 is connected with a pin of a light-emitting diode D3, one end of a resistor R3 is connected with a pin 1 of a connecting terminal U3 of the action output circuit 3 and a pin 13 of a RELAY RELAY2, the other end of the resistor R3 is connected with a pin 1 of a light-emitting diode D3, and pins 2 and 4 of the light-emitting diode D3 are connected with a pin 1 of an integrated circuit U6 of the power circuit 1, a pin 2 of a connecting terminal U2 of the drive circuit 2 and a pin 8 of a RELAY RELAY2 of the action output;
the action output circuit 3 is characterized in that a pin 1 of a connecting terminal U3 is connected with a pin 13 of a RELAY RELAY2, a resistor R3 of a state display circuit 4, a pin 2 is connected with a pin 4 of the RELAY RELAY2, a pin 3 is connected with a pin 8 of the RELAY RELAY1, pins 1 of RELAYs RELAY1 and RELAY2 are connected with a triode emitter of a driving circuit 2, pins 4 and 13 of the RELAY RELAY1 are connected with a pin 2 of a connecting terminal U4 of the driving circuit 2, a pin 9 is connected with a pin 1 of a connecting terminal U4 of the driving circuit 2, pins 2 and 4 of light emitting diodes D3 of the RELAYs RELAY1 and RELAY2 are connected with a pin 4 of an integrated circuit U6 of a power circuit 1, a common end of a resistor R1 and a capacitor C1 of the driving circuit 2, and a pin 8 of the RELAY2 is connected with a pin 1 of a light emitting diode D3 of the driving circuit 4, and a pin 9 of the driving circuit 2 is connected with.
In the embodiment, the models of the connecting terminals U2 and U3 are DB125-3.81-3P, the models of the connecting terminals U4 and U5 are DB125-3.81-2P, the model of the integrated circuit U6 is an AC-DC integrated circuit HVT2P12LRN, the models of the RELAYs RELAY1 and RELAY2 are G5V-2-12V, and the model of the light-emitting diode D3 is A694B/2 SYG/S530-E2.
The working principle of the utility model is as follows:
1. peripheral wiring: the 1, 2 and 3 pins of the connecting terminal U2 are respectively connected with a live wire, a zero wire and a ground wire of an external power supply. The 1 pin and the 2 pin of the connecting terminal U3 are respectively connected with a main relay alternating current 220V coil of electrical equipment, and the 3 pin of the connecting terminal U3 is connected with the shell of the electrical equipment. Pins 1 and 2 of the connecting terminal U4 are respectively connected with two normally-on points of a starting button of the electrical equipment, and pins 1 and 2 of the connecting terminal U5 are respectively connected with two normally-off points of an emergency stop button or a stop button of the electrical equipment. If the two buttons are not available, the 1 pin and the 2 pin of the connecting terminal U4 can be directly short-circuited, and the two connecting terminals of the self-locking button or the switch are respectively connected to the 1 pin and the 2 pin of the connecting terminal U5.
2. When the periphery of equipment is connected with a live wire and a zero wire of a power supply, one light-emitting diode D3 is lighted, if an external grounding wire is connected, an emergency stop button (if any) of the electric equipment is turned on, and after a start button is pressed down, the device releases 0.5 milliampere current to the grounding wire through a resistor R1, so that the base electrode of a triode VT generates high potential, the triode VT is triggered to be conducted, the triode VT outputs the positive electrode electricity of an AC-DC integrated circuit U6 to 1 pin of two RELAYs RELAY1 and RELAY2, and flows to a GND end of an integrated circuit U6 through 16 pins of the two RELAYs to form a loop, and the two RELAYs RELAY1 and RELAY2 both act, so that the other light of the light-emitting diode D3 is lighted; alternating current 220V is output between pins 1 and 2 of the connecting terminal U3, and the shell of the equipment is connected with an external grounding wire to form final protection.
3. If the external ground wire is suddenly disconnected or the emergency stop button is pressed, the base electrode of the triode VT loses high potential, the triode VT is cut off, the two RELAYs RELAY1 and RELAY2 return to the initial state, the light emitting diode D3 turns off a lamp, the pin 1 and the pin 2 of the connecting terminal U3 stop outputting 220V of alternating current, and the connection between the equipment shell and the external ground wire is disconnected, so that protection is achieved.
Claims (2)
1. A forced grounding detection protection device for electric equipment is characterized by comprising a power supply circuit, a driving circuit, an action output circuit and a state display circuit, wherein:
the power supply circuit is used for converting externally input 220V alternating current into direct current and serving as a power supply of the driving circuit and the action output circuit;
the driving circuit is used for connecting a starting button, a stopping button, an external power supply live wire, a zero line and a ground wire of the electric equipment; when a start button of the electric equipment is pressed, generating high level and outputting the high level to the action output circuit; when the ground wire of the external power supply is disconnected or a stop button of the electric equipment is pressed, the high level is not output to the action output circuit, and the action output circuit is recovered to the initial state;
the action output circuit is used for connecting a metal shell of the electric equipment and a power supply end of the electric appliance of the electric equipment, and outputs an external 220V alternating current power supply of the driving circuit to the electric equipment through two wiring terminals to supply power to the electric equipment when receiving the high level of the driving circuit, and simultaneously connects the metal shell of the electric equipment and a ground wire of the external power supply together to realize final protection; when the action output circuit does not receive the high level of the driving circuit, the action output circuit keeps the initial state, namely the power supply of the electric equipment is cut off;
the state display circuit is used for displaying the working state of the device, and when the live wire and the zero line of the external power supply are connected normally, a lamp is turned on to indicate that the power supply is normal; when the action output circuit outputs 220V power to the electric equipment, the other lamp is turned on, which indicates that the external grounding wire is normal and the electric equipment works normally.
2. The device as claimed in claim 1, wherein the terminal U2 of the driving circuit is connected to the positive terminal of the diode D2 at pin 1, the integrated circuit U6 of the power supply circuit at pin 2, the RELAY2 of the operation output circuit at pin 9, the common terminal of the resistor R2 of the status display circuit, the terminal U2 at pin 2 is connected to the positive terminal of the diode D1 at pin 2, the integrated circuit U6 of the power supply circuit at pin 1, the RELAY2 of the operation output circuit at pin 8, the common terminal of the led D3 of the status display circuit at pin 2 and pin 4, the terminal U2 at pin 3, the terminal U5, the terminal U5 at pin 2, the terminal U4 at pin 8, the RELAY1 at pin 9, the resistor R1 at pin 2, the RELAY1 at pin 4, the common terminal of the operation driving circuit at pin 13, and the other terminal of the resistor R1, the capacitor C1, A pin 16 of a RELAY RELAY1 of the action output circuit, a pin 16 of a RELAY RELAY2, a pin 4 of an integrated circuit U6 of the power circuit, the other end of an ampere-capacitor C1 is connected with the negative electrode of a diode D1, the negative electrode of a diode D2 and the common end of the base electrode of a triode VT, the collector electrode of the triode VT is connected with a pin 3 of the integrated circuit U6 of the power circuit, and the emitter electrode of the triode VT is connected with a pin 1 of a RELAY RELAY1 of the action drive circuit and a pin 1 of a RELAY RELAY 2;
the power supply circuit is characterized in that a pin 1 of an integrated circuit U6 is connected with a pin 2 of a connecting terminal U2 of a driving circuit, a pin 4 of a light emitting diode D3 of a state display circuit, a pin 1 of a connecting terminal U2 of the driving circuit pin 2, a pin 9 of a RELAY RELAY2 of an action output circuit, a resistor R2 of the state display circuit, a pin 3 is connected with a collector electrode of a triode VT of the driving circuit pin 4, a pin 16 of a RELAY RELAY1 of the action output circuit pin 4, a pin 16 of a RELAY RELAY2, and a common end of the resistor R1 and a common end of a capacitor C1 in the driving circuit;
the state display circuit is characterized in that one end of a resistor R2 is connected with a pin 2 of an integrated circuit U6 of the power circuit, the anode of a diode D2 of the driving circuit and a pin 1 of a wiring terminal U2, the other end of the resistor R2 is connected with a pin 3 of a light-emitting diode D3, one end of a resistor R3 is connected with a pin 1 of a wiring terminal U3 of the action output circuit and a pin 13 of a RELAY RELAY2, the other end of a resistor R3 is connected with a pin 1 of a light-emitting diode D3, pins 2 and 4 of the light-emitting diode D3 are connected with a pin 1 of an integrated circuit U6 of the power circuit, a pin 2 of a wiring terminal U2 of the driving circuit and a pin 8 of a RELAY RELAY 46;
the action output circuit is characterized in that a pin 1 of a connecting terminal U3 is connected with a pin 13 of a RELAY RELAY2, a resistor R3 of a state display circuit, a pin 2 is connected with a pin 4 of a RELAY RELAY2, a pin 3 is connected with a pin 8 of a RELAY RELAY1, pins 1 of RELAYs RELAY1 and RELAY2 are connected with triode emitters of a driving circuit, pins 4 and 13 of a RELAY RELAY1 are connected with a pin 2 of a driving circuit connecting terminal U4, a pin 9 is connected with a pin 1 of a driving circuit connecting terminal U4, pins 16 of RELAYs RELAY1 and RELAY2 are connected with a pin 4 of an integrated circuit U6 of a power circuit, a common end of a resistor R1 and a capacitor C1 of the driving circuit, and a pin 8 of a RELAY RELAY2 is connected with a pin 2 and a pin 4 of a light emitting diode D3 of the state display circuit, and a pin 9 is connected with a pin 1 of a diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460495.0U CN210297233U (en) | 2019-09-04 | 2019-09-04 | Forced grounding detection protection device for electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460495.0U CN210297233U (en) | 2019-09-04 | 2019-09-04 | Forced grounding detection protection device for electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297233U true CN210297233U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921460495.0U Expired - Fee Related CN210297233U (en) | 2019-09-04 | 2019-09-04 | Forced grounding detection protection device for electric equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210297233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114419818A (en) * | 2022-01-25 | 2022-04-29 | 中天宽带技术有限公司 | Anti-theft alarm circuit, control method and cabinet |
-
2019
- 2019-09-04 CN CN201921460495.0U patent/CN210297233U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114419818A (en) * | 2022-01-25 | 2022-04-29 | 中天宽带技术有限公司 | Anti-theft alarm circuit, control method and cabinet |
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Granted publication date: 20200410 Termination date: 20210904 |