Anti-misoperation device of pole-mounted circuit breaker

Abstract

The utility model provides an anti-misoperation device for a pole-mounted circuit breaker, which comprises an electric push rod, a photoelectric switch, a wireless transmitting module, a pressure sensor, a wireless receiving mechanism, a prompt circuit, a closing detection circuit and an open circuit detection circuit, the fixed table and the lower end of the electric push rod are rotatably mounted together, the upper end of the electric push rod and the pressure sensor are mounted together, and the upper end of the pressure sensor is rotatably connected with a movable contact linkage rod of the pole-mounted circuit breaker; the photoelectric switch is mounted at the side end of the electric push rod; the wireless receiving mechanism, the prompting circuit, the closed detection circuit and the open detection circuit are installed in the element box and are electrically connected. According to the utility model, the movable contact and the static contact of the circuit breaker can be controlled to be closed or opened through the wireless receiving mechanism, so that convenience is brought to workers, and electric shock accidents can be effectively prevented; and when the movable contact and the static contact are closed and the movable contact and the static contact are open, a worker on the ground can be prompted, so that safe and reliable power supply of the pole-mounted circuit breaker is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting equipment for a pole-mounted circuit breaker, in particular to a device for preventing misoperation of a pole-mounted circuit breaker. Background Art

[0002] Pole-mounted circuit breakers are a type of equipment that mainly controls the operation or shutdown of electrical equipment in related power consumption areas. With the advancement of technology, various research levels and manufacturing technologies have made great progress. Pole-mounted circuit breakers are not only limited to medium-voltage power grids, but are also developing in the direction of high voltage, large capacity and safety.

[0003] The authorized patent of my country with patent number "202121383515.6" and patent name "Pole-mounted circuit breaker" records that "the pole-mounted circuit breaker in the utility model has a reasonable structure, good installation stability, and the shell assembly is convenient for pressure relief, and has good practicality". As can be seen from the above, although the patent has achieved the technical effect described, it is limited by structure and function like other existing devices in the field, and there are still some technical problems that need to be improved. First: The way to open or close the moving contact and static contact of the circuit breaker is that the staff lifts or pulls down the relevant mechanism on the ground with an operating rod (driving the connecting rod of the moving contact to move upward or downward so that the moving contact and the static contact are closed or opened). The above operation mode will not only bring inconvenience to the staff, but also there is a hidden danger that when the staff in other areas inspect the power supply line after the circuit breaker is disconnected, if someone closes the moving contact and the static contact with the operating rod without knowing it, there is a probability that the relevant staff will be electrocuted and cause personal injury accidents. Second: When special staff use the operating lever to close the moving contact and the static contact on the ground, if the operating lever is not operated upward properly, there is a probability that the moving contact and the static contact cannot effectively contact, which will more or less bring certain adverse effects on the safe and stable power supply. Utility Model Content

[0004] The utility model provides a device for preventing the related staff from operating the moving contact and the static contact of the circuit breaker to close or open the circuit under the joint action of related mechanisms in a convenient non-manpower mode on the ground, and can effectively prevent the possibility of electric shock accidents caused by the closing of the moving contact and the static contact by uninformed personnel, and can remind the staff when the moving contact and the static contact are effectively closed or opened, thereby effectively ensuring safe and reliable power supply, and overcoming the disadvantages of the existing pole-mounted circuit breaker as described in the background due to structural and functional limitations.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The device for preventing misoperation of a pole-mounted circuit breaker comprises an electric push rod, a photoelectric switch, a wireless transmitting module and a pressure sensor, and is characterized in that it also comprises a wireless receiving mechanism, a prompting circuit, a closing detection circuit and an opening detection circuit; the fixing seat of the pole-mounted circuit breaker is provided with a fixing platform, the upper end of the fixing platform and the lower end of the electric push rod are rotatably installed together, and the upper end of the electric push rod and the front end of the moving contact linkage rod of the pole-mounted circuit breaker are rotatably connected; the photoelectric switch is vertically distributed and installed on one side of the upper end of the electric push rod; the wireless receiving mechanism, the prompting circuit, the closing detection circuit and the opening detection circuit are installed in a component box; the power output end of the wireless receiving mechanism and the power input end of the electric push rod, the pressure sensor, the photoelectric switch, the closing detection circuit and the opening detection circuit are electrically connected respectively; the signal input end of the closing detection circuit and the opening detection circuit are electrically connected to the signal output end of the pressure sensor and the photoelectric sensor.

[0007] Furthermore, the wireless receiving mechanism includes an electrically connected wireless receiving module, a relay, and a diode; the positive power input terminal of the wireless receiving module is connected to the two positive control power input terminals of the two relays; the negative power input terminal of the wireless receiving module is connected to the negative power input terminals and the negative control power input terminal of the two relays; the two output terminals of the wireless receiving module are respectively connected to the positive power input terminals of the two relays; the two normally open contact terminals of the first relay and the second relay are respectively connected to the positive pole of the first diode, the negative pole of the second diode, the positive pole of the third diode, and the negative pole of the fourth diode.

[0008] Furthermore, the prompt circuit includes an electrically connected time relay module and an alarm, the positive power input terminal of the alarm is connected to the power output terminal of the time relay module, the positive power input terminal of the time relay module is connected to the positive trigger signal input terminal, and the negative power input terminal of the time relay module is connected to the negative power input terminal of the alarm.

[0009] Furthermore, the closed detection circuit includes electrically connected resistors and transistors, one end of the first resistor is connected to one end of the second resistor and one end of the third resistor, the other end of the third resistor is connected to the base of the transistor, and the other end of the second resistor is connected to the emitter of the transistor.

[0010] Furthermore, the open circuit detection circuit includes an electrically connected resistor and a transistor, and the base of the transistor is connected to one end of the resistor.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) the present invention does not require the staff to operate with an operating lever on the ground, but can conveniently operate the moving contact and the static contact of the circuit breaker to close or open through the wireless receiving mechanism in a non-manpower mode through the portable wireless transmitting circuit module, which not only brings convenience to the staff, but also effectively prevents the possibility of electric shock accidents caused by uninformed personnel closing the moving contact and the static contact; (2) the present invention can effectively operate the moving contact and the static contact of the pole-mounted circuit breaker body to close, and when the moving contact and the static contact are open, the buzzer will sound for a period of time to remind the staff on the ground, effectively ensuring the safe and reliable power supply of the pole-mounted circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] Figure 1 , 2 As shown in the figure, the anti-misoperation device for the pole-mounted circuit breaker includes a power module W1, a battery G1, an electric push rod M, a photoelectric switch W5, a wireless transmission module W6 (carried by the staff), and a pressure sensor W3. It also has a wireless receiving mechanism 1, a prompt circuit 2, a closed detection circuit 3, and an open circuit detection circuit 4; a fixed platform 51 is welded to the lower middle part of the front end of the fixing seat of the pole-mounted circuit breaker 5, and the upper middle part of the fixed platform 51 and the lower end of the cylinder of the electric push rod M are rotatably installed together. A lower insulating plate 6 is installed on the upper end of the movable column of the electric push rod M through bolts, and the pressure sensor W3 is installed on the lower insulating plate 6. An upper insulating plate 7 is bolted to the upper end of the force-bearing surface of the pressure sensor W3, and a circular connecting plate 8 with an axial hole is bolted to the upper end of the upper insulating plate 7, and the upper part of the connecting plate 8 is rotatably connected to the lower front end of the moving contact linkage rod 9 of the column circuit breaker; the photoelectric switch W5 is vertically distributed and bolted to the lower left end of the lower insulating plate 6, and its detection head is located at the lower end of the lower alignment workbench 51; the power module W1, the battery G1, the wireless receiving mechanism 1, the prompt circuit 2, the closed detection circuit 3, and the open circuit detection circuit 4 are installed in the component box 10, and the component box 10 is installed on the middle of the front end of the fixing table 51.

[0016] Figure 1 , 2As shown, the wireless receiving mechanism includes a wireless receiving module W2 and relays J1 and J2, diodes D1, D2, D3, and D4 connected via circuit board wiring, a positive power input terminal pin 1 of the wireless receiving module W2 is connected to two positive control power input terminals of two relays J1 and J2, a negative power input terminal pin 2 of the wireless receiving module W2 is connected to two negative power input terminals and negative control power input terminals of two relays J1 and J2, two output terminals pins 3 and 4 of the wireless receiving module W2 are connected to the positive power input terminals of the two relays J1 and J2, respectively, and two normally open contact terminals of the first relay J1 and the second relay J2 are connected to the positive electrode of the first diode D4, the negative electrode of the second diode D3, the positive electrode of the third diode D1, and the negative electrode of the fourth diode D2, respectively. The prompt circuit includes a time relay module W4 and an alarm B connected via circuit board wiring, the positive power input terminal of the alarm B is connected to the power output terminal pin 3 of the time relay module W4, the positive power input terminal pin 1 of the time relay module W4 is connected to the positive trigger signal input terminal pin 3, and the negative power input terminal pin 2 of the time relay module W4 is connected to the negative power input terminal of the alarm B. The closed detection circuit includes resistors R1, R2, R3 and transistor Q1 connected via circuit board wiring, one end of the first resistor R1 is connected to one end of the second resistor R2 and one end of the third resistor R3, the other end of the third resistor R3 is connected to the base of the transistor Q1, and the other end of the second resistor R2 is connected to the emitter of the transistor Q1. The open circuit detection circuit includes resistor R4 and transistor Q2 connected via circuit wiring, and the base of the transistor Q2 is connected to one end of the resistor R4.

[0017] Figure 1 , 2 As shown, the power input terminals 1 and 2 of the power module W1 are connected to the two poles of the AC 220V power supply through wires, and the power output terminals 3 and 4 of the power module W1 are connected to the two poles of the battery G1, the power input terminals of the prompt circuit, the 1 and 2 pins of the time relay module W4, and the power input terminals of the wireless receiving mechanism, the 1 and 2 pins of the wireless receiving circuit module W2 are connected through wires. The power output terminal of the wireless receiving mechanism, the cathode of the diode D1, the anode of the diode D2, and the positive and negative power input terminals of the electric push rod M are connected through wires. The anode of the diode D1, the cathode of the diode D2, and the power input terminals 1 and 2 of the pressure sensor W3 are connected through wires, and the power output terminals 3 and 2 of the pressure sensor W3 and the other end of the resistor R1 of the power input terminal of the closed detection circuit and the emitter of the transistor Q1 are connected through wires. The anode of the diode D3, the cathode of the diode D4, and the negative and positive power input terminals of the electric push rod M are connected through wires. The cathode of diode D3, the anode of diode D4, the power input terminals 2 and 1 of photoelectric switch W5, and the emitter of transistor Q2 at the power input terminal of the open circuit detection circuit are connected through wires. The signal output terminal 3 of photoelectric switch W5 and the other end of resistor R4 are connected through wires. Figure 2 As shown, transistors Q1 and Q2 are NPN transistors of model 9013; the resistance values ​​of resistors R1, R2, R3, and R4 are 10K (the larger the resistance value of resistor R1, the greater the partial pressure, so transistor Q1 will only be turned on when the force acting on the pressure sensor is relatively large, that is, the detection threshold force is set relatively large; the smaller the resistance value, the smaller the partial pressure, so transistor Q1 will be turned on when the force acting on the pressure sensor is relatively small, that is, the detection threshold force is set relatively small), 25K, 47K, and 47K respectively; buzzer B is an active continuous sound of model XF-12V The alarm is sounded; the diodes D1, D2, D3, and D4 are of model 1N4007; the electric push rod M is a reciprocating electric telescopic rod finished product with a power of 50W; the battery G1 is a lithium battery of model 12V / 50Ah; the wireless remote control module W6 and the wireless receiving module W2 are wireless transceiver components of model SF100, and the wireless transceiver distance is 200 meters (same as the wireless remote control mechanism components for vehicles, it has a coding circuit inside, and due to the different coding of the coding circuit, it will not cause different sets of wireless remote control modules and wireless receiving modules to transmit and receive wireless signals mutual interference); power module W1 is a finished product of AC to DC 12V power module; time relay module W4 is a delay time relay module of brand RISYM / Weixin, which has two power input terminals 1 and 2, one power output terminal 9 (normally open contact), two trigger signal input terminals 3 and 4, and four setting key ports 5, 6, 7, and 8. By operating the four key ports, the time for the power output of pin 9 can be set (after each input of the trigger power signal to pins 3 and 4, pin 9 outputs the power of the set time); relays J1 and J2 are DC12V relays Electrical appliances; the photoelectric switch W5 is a finished infrared photoelectric switch of model E18-D80NK, which has two power input terminals and one signal output terminal. When the lower end of the detection head is blocked by an obstacle in application, the signal output terminal outputs power, otherwise it does not output. The upper end of the shell has a distance detection adjustment knob, and it is appropriate to adjust it to about 10 cm in this embodiment; the pressure sensor W3 is a finished weighing pressure sensor of model HYMH. When working, the greater the pressure on the force-bearing surface, the greater the signal voltage output by the signal output terminal, and vice versa (it has two power input terminals and one signal output terminal).

[0018] Figure 1 , 2As shown, the AC 220V power supply enters the power input terminal of the power module W1, and the power output terminals 3 and 4 of the power module W1 output a stable DC 12V power supply to enter the power input terminals of the battery G1, the prompt circuit, the wireless receiving mechanism, etc. The above mechanisms are powered on and work, and the battery G1 is charged at the same time, ensuring that the relevant electrical equipment can continue to work after the power outage. When the staff needs to disconnect the moving contact of the pole-mounted circuit breaker (generally, the four or three moving contacts of the pole-mounted circuit breaker use the same linkage rod) or close the moving contact of the pole-mounted circuit breaker, when the first transmitting button S1 or S2 of the portable wireless remote control module W6 is pressed, the wireless remote control module W6 will transmit the first or second wireless closing signal, and after the wireless receiving circuit module W2 receives it, its 3 or 4 pins will output a high level to enter the power input terminal of the relay J1 or J2, and the relay J1 or J2 is powered on to attract its control power input terminal and the normally open contact terminal to close. After the relay J2 is energized and energized, the 12V power supply is unidirectionally conducted through the diodes D1 and D2 to enter the positive and negative power input terminals of the electric push rod M, and directly enters the power input terminal of the pressure sensor W3 without passing through the diodes D1 and D2. After the positive and negative power input terminals of the electric push rod M are energized, the upper end of its movable rod pushes the moving contact linkage rod of the column circuit breaker upward, and then the moving contact and static contact of the column circuit breaker are closed. After the relay J1 is energized and energized, the 12V power supply is unidirectionally conducted through the diodes D3 and D4 to enter the negative and positive power input terminals of the electric push rod M, and directly enters the power input terminal of the photoelectric switch W5 without passing through the diodes D3 and D4. After the negative and positive power input terminals of the electric push rod M are energized, the upper end of its movable rod drives the moving contact linkage rod of the column circuit breaker downward, and then the moving contact and static contact of the column circuit breaker are open.

[0019] Figure 1 , 2As shown, after the moving contact and the static contact of the pole-mounted circuit breaker are closed and the pressure sensor W3 is energized and working, when the moving contact and the static contact are not effectively closed, the force applied to the force-bearing surface of the pressure sensor W3 is low and the voltage signal output from its 3rd pin is relatively low. This voltage signal is divided by resistors R1 and R2, and the resistor R3 reduces the voltage and limits the current to enter the base of the transistor Q1 to be lower than 0.7V. The transistor Q1 will not be turned on, and the sounder B will not be energized and make a sound. When the moving contact and the static contact are effectively closed, the force applied to the force surface of the pressure sensor W3 is large, and the voltage signal outputted from its 3rd pin is relatively high. The voltage signal is divided by resistors R1 and R2, and the resistor R3 steps down the voltage and limits the current to enter the base of the transistor Q1, which is higher than 0.7V. The transistor Q1 will turn on the collector and output a low level to enter the 4th pin of the time relay module W4. The 9th pin of the time relay module W4 outputs a 3-second power supply (the time is adjustable), and then the buzzer B will be energized and sound. After hearing the sound, the staff can press the second button S2 of the wireless remote control module W6 again, and the wireless remote control module W6 will emit the second wireless open-circuit signal. The 4th pin of the wireless receiving circuit module W2 stops outputting a high level, and the relay J2 loses power and is no longer attracted. Then, the electric push rod M will no longer be energized to work (the moving contact no longer rises in height). When the moving contact and the static contact of the pole-mounted circuit breaker are open, after the photoelectric switch W5 is energized and working, the moving contact and the static contact are not effectively separated (when the distance between the two is less than 10 cm, a larger distance is set to prevent the distance between the two from being too close and causing arcing), and the photoelectric switch W5 is relatively far away from the fixed platform 51, the 3rd pin of the photoelectric switch W5 does not output a high level, then the sounder B will not be energized and sound; when the moving contact and the static contact of the pole-mounted circuit breaker are open, after the photoelectric switch W5 is energized and working, the moving contact and the static contact are effectively separated (when the distance between the two is greater than 10 cm), and the distance between the photoelectric switch W5 and the fixed platform 51 is relatively close, the 3rd pin of the photoelectric switch W5 The pin outputs a high level, which is limited and reduced by resistor R4 and enters the base of transistor Q1. Transistor Q2 will turn on the collector and output a low level, which enters pin 4 of time relay module W4. Pin 9 of time relay module W4 outputs power for 3 seconds (the time is adjustable). Then the buzzer B will be energized and make a sound. After hearing the sound, the staff can press the first button S1 of wireless remote control module W6 again. Wireless remote control module W6 transmits the first wireless open-circuit signal. Pin 3 of wireless receiving circuit module W2 stops outputting a high level, and relay J1 loses power and is no longer attracted. Then, the electric push rod M will no longer be energized and work (the moving contact no longer drops in height).Through the above technical scheme, the novel device does not require the staff to operate with an operating lever on the ground, and can conveniently control the closing or opening of the moving contacts and static contacts of the circuit breaker through the wireless receiving mechanism in the non-manpower mode of the portable wireless transmitting circuit module, which not only brings convenience to the staff, but also can effectively prevent the probability of electric shock accidents caused by the closing of the moving contacts and static contacts by irrelevant personnel without knowing it (irrelevant personnel do not have a wireless remote control mechanism, etc. and cannot operate); when the moving contacts and static contacts of the pole-mounted circuit breaker body are effectively operated to close, and when the moving contacts and static contacts are opened, the buzzer sounds for a period of time to remind the ground staff, effectively ensuring the safe and reliable power supply of the pole-mounted circuit breaker.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A device for preventing misoperation of a pole-mounted circuit breaker, comprising an electric push rod, a photoelectric switch, a wireless transmission module, and a pressure sensor, characterized in that: It also has a wireless receiving mechanism, a prompt circuit, a closed detection circuit, and an open detection circuit; the fixed seat of the pole-mounted circuit breaker is installed with a fixed platform, the upper end of the fixed platform and the lower end of the electric push rod are rotatably installed together, and the upper end of the electric push rod is rotatably connected to the front end of the moving contact linkage rod of the pole-mounted circuit breaker; the photoelectric switch is vertically distributed and installed on one side of the upper end of the electric push rod; the wireless receiving mechanism, the prompt circuit, the closed detection circuit, and the open detection circuit are installed in the component box; the power output end of the wireless receiving mechanism is electrically connected to the power input end of the electric push rod, the pressure sensor, the photoelectric switch, the closed detection circuit, and the open detection circuit respectively; the signal input end of the closed detection circuit and the open detection circuit is electrically connected to the signal output end of the pressure sensor and the photoelectric sensor.

2. The device for preventing misoperation of a pole-mounted circuit breaker according to claim 1, characterized in that: The wireless receiving mechanism includes an electrically connected wireless receiving module, a relay and a diode. The positive power input terminal of the wireless receiving module is connected to the two positive control power input terminals of the two relays. The negative power input terminal of the wireless receiving module is connected to the negative power input terminals and the negative control power input terminal of the two relays. The two output terminals of the wireless receiving module are respectively connected to the positive power input terminals of the two relays. The two normally open contact terminals of the first relay and the second relay are respectively connected to the positive electrode of the first diode, the negative electrode of the second diode, the positive electrode of the third diode, and the negative electrode of the fourth diode.

3. The device for preventing misoperation of a pole mounted circuit breaker according to claim 1, characterized in that: The prompt circuit includes an electrically connected time relay module and an alarm, the positive power input terminal of the alarm is connected to the power output terminal of the time relay module, the positive power input terminal of the time relay module is connected to the positive trigger signal input terminal, and the negative power input terminal of the time relay module is connected to the negative power input terminal of the alarm.

4. The device for preventing misoperation of a pole mounted circuit breaker according to claim 1, characterized in that: The closed detection circuit includes an electrically connected resistor and a transistor, one end of the first resistor is connected to one end of the second resistor and one end of the third resistor, the other end of the third resistor is connected to the transistor base, and the other end of the second resistor is connected to the transistor emitter.

5. The device for preventing misoperation of a pole mounted circuit breaker according to claim 1, characterized in that: The open circuit detection circuit comprises a resistor and a transistor which are electrically connected, and a base of the transistor is connected to one end of the resistor.

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