Electric facility anti-creeping early warning device

Abstract

The invention discloses an anti-creeping early warning device for electrical facilities, and relates to the technical field of power utilization early warning. A rubber block is detachably connected to one side of the shell, a status lamp is installed on one side of the shell, a sound alarm bin and a light alarm bin are arranged at the bottom of the status lamp, a voice alarm is installed in the sound alarm bin, a lamp panel is installed in the light alarm bin, a battery bin is arranged on one side in the shell, and a battery pack is detachably installed in the battery bin. A control bin is arranged on one side of the shell, an electricity testing part is installed in the control bin, a main control board is connected to one side of the electricity testing part, an early warning module is arranged in the main control board, a controller is installed on one side of the main control board, and the status lamp is electrically connected with the main control board. According to the invention, acousto-optic early warning is carried out on the fault of the power utilization facility which is electrified due to the fault but does not form an electric leakage loop, so that the early warning capability on the condition of dangerous potential after the fault of the power utilization facility is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electricity warning, and in particular to an anti-leakage warning device for electrical facilities. Background Art

[0002] Electric leakage in electrical facilities is a common fault phenomenon in power systems. Problems such as poor grounding, aging wires, improper installation, and substandard quality of internal components can all lead to this situation. Therefore, the use of electrical facilities requires periodic inspections. To improve the inspection effect, some electrical facilities will be equipped with leakage warning devices to monitor the leakage of distribution cabinets.

[0003] The patent specification with the publication number CN113471868B discloses a warning type ring network cabinet door, including a mounting frame, a closing component, a limit component, an adjustment component, a clamping component, etc. A closing component is arranged on one side of the mounting frame, a limit component is arranged on the closing component, an adjustment component is arranged on the closing component, and a clamping component is slidably connected to the mounting frame. When the internal electrical components have leakage, it reminds outsiders that the internal electrical components of this equipment are leaking, and there is a risk of electric shock; During use, two warning plates are pre-installed on the cabinet door to warn you if there is electricity. The internal electrical components are connected to the movable bar for displacement. When the internal electrical components leak electricity, the power supply block provides current to the power receiving block, and the electromagnet generates magnetic force under the influence of the current. The magnetic force attracts the charged plate in the warning plate to the visible window to complete the warning effect. The disadvantage of this technical solution is that the premise of the warning of this solution is to trigger the subsequent warning action after detecting the current of the leakage circuit. However, when the equipment fails and leaks electricity, it will cause not all leakages to form a leakage circuit based on factors such as excessive circuit resistance. At this time, the warning device cannot trigger the alarm because it does not detect the current. However, in fact, there is a potential difference between the faulty leakage equipment and the earth at this time. Because the human body is conductive, when the human body touches it, the potential difference is transmitted from the equipment to the earth through the human body, and the human body instantly becomes the medium of the current path, thereby causing electric shock. That is, the existing warning device will only trigger the warning action when the leakage forming the circuit is measured, and when the equipment leaks electricity but does not form a circuit, it cannot be warned. However, since there is still a risk of electric shock after the human body touches the equipment at this time, the warning ability of the existing leakage warning device is insufficient. Summary of the invention

[0004] The purpose of the present invention is to provide an electrical facility anti-leakage warning device, and the technical problem to be solved is as follows: the existing electrical facility warning device has insufficient warning capability when facing the situation where the equipment fails and is energized but no leakage circuit is formed.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A leakage prevention warning device for electrical facilities, comprising a shell, a rubber block is detachably connected to one side of the shell, a status light is installed on one side of the shell, an acoustic alarm compartment and an optical alarm compartment are arranged at the bottom of the status light, a voice alarm is installed inside the acoustic alarm compartment, a light board is installed inside the optical alarm compartment, a battery compartment is arranged on one side of the shell, a battery pack is detachably installed inside the battery compartment, a control compartment is arranged on one side of the shell, an electrical measuring component is installed inside the control compartment, a main control board is connected to one side of the electrical measuring component, a warning module is built in the main control board, a controller is installed on one side of the main control board, the controller is used to cooperate with the warning module to control the operating status of the voice alarm and the light board, and the status light is electrically connected to the main control board.

[0006] As a further solution of the present invention: the voice alarm is electrically connected to the main control board, a plurality of sound strip holes are evenly arranged on the surface of the sound alarm chamber, the outer side surface of the sound alarm chamber is an arc surface, and the distance between the sound strip holes at the top and the rubber block is longer than the distance between the sound strip holes at the bottom and the rubber block.

[0007] As a further solution of the present invention: a cover plate is rotatably connected to the outer side of the optical alarm compartment, the light board is electrically connected to the main control board, diffusion protrusions are evenly arranged on the inner side of the cover plate, and the cover plate is transparent.

[0008] As a further solution of the present invention: the electrical measuring component is a surface potential sensor.

[0009] As a further solution of the present invention: the early warning module includes a detection point, which is electrically connected to the electrical measuring component, and an operational amplifier circuit is arranged at the detection point, and the operational amplifier circuit is connected to two transistors, and a sensitivity adjuster is arranged on one side of the transistor and is connected to the voice alarm and the light board.

[0010] As a further solution of the present invention: the sensitivity regulator includes two parallel-connected sensitive resistors, a single-pole double-throw switch is installed between the two sensitive resistors, and the resistance values ​​of the two sensitive resistors are different.

[0011] As a further solution of the present invention: the controller includes a single chip microcomputer, one side of the single chip microcomputer is connected to the light board, one side of the single chip microcomputer is installed with a decoupling capacitor, one side of the single chip microcomputer is installed with a connector, and the connector is connected to the voice alarm.

[0012] As a further solution of the present invention: a battery cover is detachably connected to the outside of the battery compartment, and a farad capacitor is installed on the main control board. The farad capacitor is used to temporarily replace the battery pack to power the early warning device.

[0013] Beneficial effects of the present invention: 1. In the present invention, a voice alarm and a light board are installed on one side of the device, and the early warning alarm and the light board are connected to the early warning module circuit of the main control board, and the early warning module is connected to the controller. On this basis, the fault voltage of the shell of the tested device is detected by means of an electrical measuring component. During the detection, there is no need for equipment leakage to form a current loop. After the leakage voltage is obtained by measuring the potential difference between the faulty leakage device and the air, the voltage signal is amplified and transmitted to the early warning module circuit. After the transistor of the early warning module is saturated and turned on, the voice alarm and the light board are controlled by the controller for sound and light. The purpose is to, unlike the existing early warning method in which the leakage protection device triggers the alarm only after the leakage current is detected after the leakage loop is formed, perform sound and light early warning on the fault of the power-consuming facility that is energized but does not form a leakage loop, so as to enhance the early warning capability for the situation with dangerous potential after the electrical facility fails.

[0014] 2. In the present invention, a detachable battery pack is installed on one side of the shell, the battery pack is connected to the main control board inside the shell, and a farad capacitor is installed on the main control board. The battery pack is used to power the device normally, and the farad capacitor is used to temporarily power the device after the battery pack is removed. At the same time, a replaceable rubber block is provided on the back of the shell. The purpose is to make the warning power supply of the device independent. At the same time, with the help of independent power supply, the disassembly and assembly of the device is independent of the installation position, so that the disassembly and assembly of the device is more convenient while obtaining a safer and more reliable power supply. The purpose is to provide the device with an uninterrupted, stable and safe power supply to ensure continuous and effective leakage monitoring of the equipment under test and improve the safety of the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a diagram of the battery compartment and the warning light of the present invention being in an open state; Figure 3 It is an overall exploded view of the present invention; Figure 4 is a circuit diagram of the early warning module of the present invention; Figure 5 It is a circuit diagram of the controller of the present invention.

[0017] In the figure: 1. Shell; 2. Rubber block; 3. Status light; 4. Sound alarm compartment; 5. Voice alarm; 6. Light alarm compartment; 7. Light board; 8. Battery compartment; 9. Battery pack; 10. Control compartment; 11. Electrical measuring parts; 12. Main control board; 13. Sound bar hole; 14. Cover plate; 15. Diffusion bump; 16. Battery cover; 17. Farad capacitor; 18. Controller; 19. Detection point; 20. Transistor; 21. Sensitivity adjuster; 22. Single chip microcomputer; 23. Decoupling capacitor; 24. Connector. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 5 As shown, an electrical facility leakage prevention warning device comprises a shell 1, a rubber block 2 is detachably connected to one side of the shell 1, a status light 3 is installed at the top of the shell 1 away from the rubber block 2, a sound alarm compartment 4 is arranged at the bottom of the status light 3, a voice alarm 5 is installed inside the sound alarm compartment 4, a light alarm compartment 6 is arranged at the bottom of the shell 1, a light board 7 is installed inside the light alarm compartment 6, a battery compartment 8 is arranged at one side of the shell 1, a battery pack 9 is detachably installed inside the battery compartment 8, a control compartment 10 is arranged at one side of the shell 1, an electrical measuring component 11 is installed in the control compartment 10, a main control board 12 is connected to one side of the electrical measuring component 11, the main control board 12 has a built-in warning module, a controller 18 is installed on one side of the main control board 12, the controller 18 is used to cooperate with the warning module to control the running status of the voice alarm 5 and the light board 7, and the status light 3 is electrically connected to the main control board 12; It should be noted that the electrical component battery pack 9 in the device is used to power various electrical components including the main control board 12, and the power on and off of various electrical components - the status light 3, the voice alarm 5, the light board 7, the electrical measuring component 11 and the main control board 12 are all controlled by the main control board 12, wherein the status light 3 is used to detect the operating state of the device itself, and remains on when the battery of the device is charged, and no longer on if the battery is exhausted, thereby reminding to replace the battery, that is, the status light 3 is used to display whether the device is in a normal power supply state; the housing 1 is preferably made of red plastic, and the outside is non-conductive, that is, its normal working state is not affected by the power supply on the surface of the installed electrical facilities, and a gel cavity (not shown) is set on the back of the housing 1 for disassembling and assembling the gel block 2, and the gel block 2 is a replaceable part, that is, since the device itself has its own power supply, and the connecting parts relied on during disassembly and assembly are common consumables, the disassembly and assembly are non-destructive; Furthermore, since the status light 3 can always display whether the equipment is detected normally, and can be disassembled in a non-destructive manner, and the device body is a non-conductive structure, the device can maintain the leakage warning capability of the electrical equipment for a long time without contacting the equipment to ensure safe use.

[0020] The voice alarm 5 is electrically connected to the main control board 12. A plurality of sound bar holes 13 are evenly arranged on the surface of the sound alarm chamber 4. The outer side of the sound alarm chamber 4 is an arc surface, and the distance between the top sound bar hole 13 and the rubber block 2 is longer than the distance between the bottom sound bar hole 13 and the rubber block 2. It should be noted that when the device is installed, the rubber block 2 is attached to the surface of the electrical facility. In order to avoid the voice alarm 5 being placed externally and thus causing a reduction in its service life without affecting the stable transmission of sound, sound strip holes 13 are evenly arranged on the outside of the sound alarm compartment 4, and each sound strip hole 13 is arranged to be in an arc shape facing downward, so as to ensure stability during long-term use and reliability of alarm transmission.

[0021] The outer side of the optical alarm compartment 6 is rotatably connected to a cover plate 14, the light board 7 is electrically connected to the main control board 12, and the inner side of the cover plate 14 is evenly arranged with diffusion bumps 15, and the cover plate 14 is made of red transparent plastic; It should be noted that multiple rows of warning lights are evenly arranged on the surface of the lamp board 7, which preferably emit red light when powered on. The outer surface of the cover 14 is a transparent plastic plate, and multiple rows of diffusion protrusions 15 are evenly arranged on the inside, which are used to increase the scattering degree of light when the lamp board 7 is emitting light and increase the size of its warning coverage space, thereby increasing the probability of being discovered and further improving the reliability of the alarm; in addition, since there are many light-emitting lamp beads on the lamp board 7 and there is a risk of failure in long-term use, the cover 14 is set to a flip-up structure to facilitate the later inspection and replacement of the lamp board 7 and increase the service life of the device.

[0022] like Figures 3 to 5 As shown, the electrical measuring component 11 is preferably a surface potential sensor, which can measure the voltage on the surface of an object within a certain distance, and its measuring distance range is one to ten centimeters. Specifically, the electrical measurement principle of the surface potential sensor is based on electrostatic induction, that is, by placing the sensor close to the charged body, the distorted electric field generated between the sensor and the charged body to be measured is used to measure the surface potential of the charged body, and non-contact leakage detection is achieved by measuring the electric field strength on the surface of the charged body. When a potential difference exists between the faulty charged equipment and the ground to form a voltage, the free charges around the equipment are driven by the voltage to form an electric field. Therefore, even if no current path is formed, the electric field still exists, so that the surface potential sensor can be used to detect leakage of faulty charged bodies that have not formed a circuit.

[0023] The early warning module includes a detection point 19, which is electrically connected to the electrical measuring element 11. An operational amplifier circuit is provided at the detection point 19, and the operational amplifier circuit is connected to two transistors 20. A sensitivity regulator 21 is provided on one side of the transistor 20 and is connected to the voice alarm 5 and the light board 7. It should be noted that when the equipment fails and leaks electricity, the surface potential of the equipment is much higher than the air potential. The measuring component 11 will transmit the electrical signal formed by the potential difference between the two points back to the detection point 19 of the early warning module. Then the operational amplifier circuit will amplify the voltage value, compare it with the established safety threshold after amplification, and enter the early warning range after exceeding the threshold. Since the two transistors 20 are connected to the operational amplifier circuit, they are immediately shocked from the disconnected state to the saturated conduction state, and the voice alarm 5 and the light board 7 are changed from the disconnected state to the powered state, so that the controller 18 can perform state control later. In addition, the early warning The module adds a sensitivity regulator 21 in the circuit, which is used to adjust the sensitivity of leakage detection. Specifically, the sensitivity regulator 21 includes two parallel-connected sensitive resistors and a single-pole double-throw switch connected between the two sensitive resistors. The ratio of the two sensitive resistors is preferably five. When the single-pole double-throw switch is turned to the sensitive resistor with a larger value, since the voltage input value is the same, it can be seen from Ohm's law that the overcurrent is smaller and the sensitivity of the device is lower at this time. When it is turned to the sensitive resistor with a smaller value, the overcurrent is larger and the sensitivity is enhanced accordingly, thereby realizing the function of adjusting the sensitivity of fault detection.

[0024] The controller 18 includes a single chip microcomputer 22, one side of the single chip microcomputer 22 is connected to the light board 7, a decoupling capacitor 23 is installed on one side of the single chip microcomputer 22, and a connector 24 is installed on one side of the single chip microcomputer 22, and the connector 24 is connected to the voice alarm 5; It should be noted that when the light board 7 does not detect the voltage on the surface of the equipment, the two transistors 20 are not saturated and turned on, and the light board 7 is in a disconnected state. At this time, the light board 7 is in a dark state. When the fault voltage is detected, the two transistors 20 turn on the light board 7, and the light board 7 is controlled by the single-chip microcomputer 22. The single-chip microcomputer 22 is preferably an STC8G1K08 single-chip microcomputer, which has multiple timers and timers built in, and has a pulse modulation function, thereby realizing the periodic on-off function of the light board 7, causing the light board 7 to flash red light as a warning; Since the single-chip computer 22 is connected to the connector 24, the connector 24 is preferably a four-pin connector, each pin of which is connected to the control interface of the voice alarm 5, each pin corresponds to a section of alarm information in the voice alarm 5, and the single-chip computer 22 is configured with an I / O port, and the control code written inside the single-chip computer 22 can be used to regularly control the level state of the I / O port to realize the sequential broadcast of each section of alarm information, thereby realizing the voice early warning function of equipment failure leakage; In addition, since the device is used to monitor whether the housing of the device under test is charged, the device under test itself will generate high-frequency noise when it is in working state. This part of the noise will interfere with the electrical signal received by the single-chip microcomputer 22 from the detection device. Therefore, a low-impedance path is provided by the decoupling capacitor 23. After this part of the high-frequency noise is short-circuited to the ground (see Figure 5 ) can reduce the impact on the single-chip microcomputer 22 receiving the control signal. At the same time, when the light board 7 and the voice alarm 5 are working, the I / O port switching of the single-chip microcomputer 22 will cause the power supply to drop instantly, which can be used as a supplementary power supply to reduce voltage fluctuations and achieve the effect of stabilizing the sound and light alarm. Preferably, the capacitance of the decoupling capacitor 23 is 10uF, and the voice loop broadcast content is "fault live, please stay away"; That is, the device detects the leakage of the shell of the equipment to be detected by the electrical measuring component 11, and transmits the leakage signal to the early warning module when the voltage of this part does not form a path. After the circuit of the early warning module is turned on, the controller 18 connected to the early warning module immediately issues a control instruction to the energized voice alarm 5 and the light board 7, forming an audible and visual alarm for the leakage information, realizing the early warning function of the equipment fault and avoiding electric shock accidents caused by the immediate conduction of the faulty circuit after human touch.

[0025] A battery cover 16 is detachably connected to the outside of the battery compartment 8, and a farad capacitor 17 is installed on the main control board 12, and the farad capacitor 17 is used to temporarily power the device; It should be noted that since the battery pack 9 installed in the battery compartment 8 is an independent power source, the battery pack 9 is preferably a lithium polymer battery, which has the characteristics of light weight and high energy density. However, after long-term use, there is still a problem of insufficient power. Therefore, a farad capacitor 17 is installed on one side of the main control board 12. When the battery pack 9 is taken out for charging, it is used to temporarily supplement the power supply to the inside of the power-off device, so that the device can maintain uninterrupted detection of leakage of electrical equipment when in use; specifically, the farad capacitor 17 has a higher capacitance than conventional capacitors and can be used as a backup power supply.

[0026] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An electrical equipment leakage prevention warning device, comprising a housing (1), a rubber block (2) being detachably connected to one side of the housing (1), characterized in that: A status light (3) is installed on one side of the housing (1); an audible alarm compartment (4) and an optical alarm compartment (6) are arranged at the bottom of the status light (3); a voice alarm (5) is installed inside the audible alarm compartment (4); a light board (7) is installed inside the optical alarm compartment (6); a battery compartment (8) is arranged on one side of the housing (1); a battery pack (9) is detachably installed inside the battery compartment (8); a control compartment (10) is arranged on one side of the housing (1); an electrical measuring component (11) is installed inside the control compartment (10); a main control board (12) is connected to one side of the electrical measuring component (11); an early warning module is built into the main control board (12); a controller (18) is installed on one side of the main control board (12); the controller (18) is used to cooperate with the early warning module to control the operating status of the voice alarm (5) and the light board (7); the status light (3) is electrically connected to the main control board (12).

2. The electrical equipment leakage prevention warning device according to claim 1, characterized in that: The voice alarm (5) is electrically connected to the main control board (12); a plurality of sound bar holes (13) are evenly arranged on the surface of the sound alarm chamber (4); the outer side surface of the sound alarm chamber (4) is an arc surface; and the distance between the sound bar holes (13) at the top and the rubber block (2) is longer than the distance between the sound bar holes (13) at the bottom and the rubber block (2).

3. The electrical equipment leakage prevention warning device according to claim 1, characterized in that: The outer side of the optical alarm chamber (6) is rotatably connected to a cover plate (14), the light board (7) is electrically connected to the main control board (12), the inner side of the cover plate (14) is evenly arranged with diffusion protrusions (15), and the cover plate (14) is transparent.

4. The electrical equipment leakage prevention warning device according to claim 1, characterized in that: The electrical measuring component (11) is a surface potential sensor.

5. The electrical equipment leakage prevention warning device according to claim 1, characterized in that: The early warning module comprises a detection point (19), the detection point (19) being electrically connected to the electrical measuring component (11), an operational amplifier circuit being arranged at the detection point (19), the operational amplifier circuit being connected to two triodes (20), a sensitivity regulator (21) being arranged on one side of the triode (20) and being connected to the voice alarm (5) and the light board (7).

6. The electrical equipment leakage prevention warning device according to claim 5, characterized in that: The sensitivity regulator (21) comprises two parallel-connected sensitivity adjustment resistors, a single-pole double-throw switch is installed between the two sensitivity adjustment resistors, and the two sensitivity adjustment resistors have different resistance values.

7. The electrical equipment leakage prevention warning device according to claim 1, characterized in that: The controller (18) comprises a single-chip microcomputer (22), one side of the single-chip microcomputer (22) is connected to the light board (7), one side of the single-chip microcomputer (22) is equipped with a decoupling capacitor (23), one side of the single-chip microcomputer (22) is equipped with a connector (24), and the connector (24) is connected to the voice alarm (5).

8. The electrical equipment leakage prevention warning device according to claim 1, characterized in that: A battery cover (16) is detachably connected to the outside of the battery compartment (8), and a farad capacitor (17) is installed on the main control board (12). The farad capacitor (17) is used to temporarily replace the battery pack (9) to supply power to the early warning device.

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