Weak current engineering safety detection equipment and method thereof

Abstract

The invention relates to the technical field of circuit detection, in particular to weak current engineering safety detection equipment and a method thereof.The weak current engineering safety detection equipment comprises a distribution box board and air switches, the multiple air switches are installed on the distribution box board side by side, and the air switches are carriers for assembling the equipment; the upper and lower parts of the air switch are symmetrically provided with wiring terminals which are respectively connected with a zero line and a live line. And the fixing frames are symmetrically installed on the distribution box plate, and the two fixing frames are located on the two sides of the air switch. The short circuit detection assembly and the electric leakage detection assembly are integrated at the wiring terminal of the air switch, an alarm can be given in time when short circuit or electric leakage occurs in a circuit, the safety of the system is effectively improved, the change of current and voltage is monitored through the detector, the change of current on a live wire is directly monitored through the electric leakage detection assembly, and the safety of the system is improved. And potential safety hazards can be found in time.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit detection, and in particular to a weak current engineering safety detection device and a method thereof. Background Art

[0002] Weak current engineering is a classification of power application. Power application can be divided into strong current and weak current according to the strength of power transmission. The electricity used in buildings and building complexes generally refers to weak current below AC 220V and 50Hz, which mainly provides electricity to people and converts electricity into other energy sources. With the rise of intelligent buildings, more and more weak current systems are integrated into buildings, such as fire alarm systems, video surveillance systems, access control systems, etc. The normal operation of these systems is crucial to ensure the safety of buildings. However, due to the complexity and concealment of weak current systems, once a fault or hidden danger occurs, it is often difficult to detect and solve it in time. This requires regular safety inspections through professional testing equipment.

[0003] After searching, the patent with the authorization publication number CN114152841A discloses an intelligent detection system based on weak current engineering, including a first weak current wire, a second weak current wire and a control terminal, the first weak current wire and the second weak current wire are fixedly connected by an insulating connecting sleeve, the two ends of the first weak current wire and the second weak current wire are respectively provided with a first positioning detection device and a second positioning detection device, the front and rear sides of the opposite sides of the first positioning detection device and the second positioning detection device are fixedly connected by sliding devices, the two sliding devices are provided with a driving leakage detection device, the driving leakage detection device is provided on the first weak current wire, and the tops of the first positioning detection device and the second positioning detection device located at the opposite ends of the first weak current wire and the second weak current wire are respectively fixedly connected with a built-in conductive rod one and a built-in conductive rod two.

[0004] The above patent discloses an intelligent detection system based on weak current engineering. The detection system monitors short circuit or leakage by installing a detection device on the outer wall and using a conductive sheet to pass through the outer skin of the weak current wire and contact the built-in wire. The detection sheet is moved along the weak current wire by a motor-driven ring to detect leakage on the outer wall. However, this method is limited by the complex wiring environment and wires of different diameters in the weak current well. It can only perform detection within a limited distance and is difficult to adapt to the curved parts of the line. In addition, the method of passing through the outer skin of the weak current wire to connect with its internal wire will also increase the risk of leakage of the wire. Therefore, it is necessary to design a weak current engineering safety detection device and method based on the shortcomings of the prior art. Summary of the invention

[0005] The existing weak current engineering detection system uses a conductive sheet to pass through the outer skin of the weak current wire to contact the built-in wire, which has a limited scope of application and a risk of leakage. In order to overcome the technical problems existing in the prior art, the present invention provides a weak current engineering safety detection device and method.

[0006] The technical scheme is: a weak current engineering safety detection equipment, including a distribution box and an air switch, a plurality of air switches are installed side by side on the distribution box, the air switch is a carrier for assembling the equipment, and the air switch is symmetrically provided with connection terminals for connecting the neutral line and the live line respectively on the upper and lower sides; a fixing frame, symmetrically installed on the distribution box, and the two fixing frames are located on both sides of the air switch; a connecting rod, fixedly connected between the fixing frames; a mounting frame, fixedly installed on the connecting rod, the number of the mounting frames is consistent with the number of the air switches, the mounting frame is attached to the outside of the air switch, and the mounting frame is a C-shaped frame; a short circuit detection component, arranged at the upper and lower connection terminals of the air switch, the short circuit detection component Used to monitor whether a short circuit occurs in a line; the short circuit detection component includes a detector, a slider, a spring, a detection contact and an alarm; the detector is symmetrically slidably mounted on the mounting frame through sliders at both ends thereof; a spring is provided between the mounting frame and the slider; the detector is provided with two detection contacts for contacting the wiring terminals; the detector contacts the wiring terminals through the detection contacts, thereby detecting current and voltage changes on the neutral line and the live line; the detector is electrically connected to an alarm, and the alarm is used to sound an alarm when the detector detects abnormal current and voltage; a leakage detection component, a leakage detection component is provided at the upper and lower ends of the mounting frame, and the leakage detection component is used to detect whether leakage occurs in the live line.

[0007] Furthermore, L-shaped grooves are provided at the upper and lower ends of the mounting frame, and the slider is square and symmetrically slidably arranged in the L-shaped groove on the lower part of the mounting frame. The mounting frame can position the slider through the L-shaped groove thereon, so that the detection contact on the detector can be stably disconnected from the wiring terminal.

[0008] Furthermore, the leakage detection component includes a bracket, a clamp-on ammeter and a buzzer. The upper and lower parts of the mounting frame are symmetrically fixed with brackets. The clamp-on ammeters are respectively installed on the brackets. The current clamp of the clamp-on ammeter is clamped on the live wire. The clamp-on ammeter senses the change of current on the live wire through the built-in Hall effect sensor. The clamp-on ammeter is electrically connected to the buzzer.

[0009] Furthermore, power-off components are provided at the upper and lower parts of the air switch, and the power-off components include: an installation frame, symmetrically installed on the upper and lower sides of the air switch, the installation frame is an L-shaped chamber, and the neutral wire and the live wire are both passed through it and connected to the wiring terminals; a control box I, installed in the installation frame close to the live wire; pneumatic scissors I, installed in the control box I, and the pneumatic scissors I are used to cut the live wire; a control box II, installed in the installation frame close to the neutral wire; pneumatic scissors II, installed in the control box II, and the pneumatic scissors II are used to cut the neutral wire; a thermometer, arranged on the installation frame, and the thermometer is used to monitor the temperature on the air switch.

[0010] Furthermore, the power-off assembly also includes rubber washers, which are respectively arranged at the connection points where the neutral wire and the live wire pass through the installation frame. The rubber washers are used to block the arc overflow generated when the pneumatic scissors I and the pneumatic scissors II cut the live wire and the neutral wire respectively.

[0011] Furthermore, the thermometer includes a connecting frame and an infrared temperature sensor, the connecting frame is installed on the top of the mounting frame, and the connecting frame is provided with infrared temperature sensors whose number is the same as the air switches. The infrared temperature sensor is used to sense the temperature of the adjacent detection contacts and the contact ends of the wiring terminals. The infrared temperature sensor is electrically connected to the adjacent control box I, and the infrared temperature sensor is also electrically connected to the adjacent control box II.

[0012] Furthermore, the handles and blade backs of the pneumatic scissors I and II are both made of insulating materials. When the pneumatic scissors I and II cut the live wire and the neutral wire respectively, they can isolate the current from being conducted outward.

[0013] Furthermore, an electrostatic guide plate and an arc extinguishing chamber are arranged inside the installation frame. The electrostatic guide plate is arranged inside the installation frame on the side close to the live wire. The electrostatic guide plate is a curved metal plate. The electrostatic guide plate is used to conduct the arc that may be generated after the pneumatic scissors I cut the live wire. The arc extinguishing chamber is arranged on the upper part of the inner wall of the installation frame. The electrostatic guide plate guides into the arc extinguishing chamber. A plurality of arc extinguishing grids are arranged inside the arc extinguishing chamber. The arc extinguishing chamber is used to eliminate the arc conducted by the electrostatic guide plate.

[0014] Furthermore, the mounting frame is provided with movable components whose number is the same as the air switches, and the movable components include a guide block and a push rod. The guide block is slidably installed on one side of the mounting frame through a slide groove thereon, and the push rod is fixed to the end of the guide block. The push rod is an inclined rod with inclined ends. The push rod is used to squeeze the slider on the same air switch, thereby facilitating the movement of the detector and disconnecting the detection contact from the wiring terminal.

[0015] A method for using a weak current engineering safety detection device comprises the following steps:

[0016] S1. After connecting the neutral wire and the live wire to the air switch using the wiring terminals, the two detection contacts are respectively in contact with the wiring terminals connecting the neutral wire and the live wire, and the detector is used to detect the voltage changes on the neutral wire and the live wire. When the detector detects abnormal voltage, it will send an electrical signal to the alarm, so that the alarm will sound and remind the user of the abnormal voltage;

[0017] S2. Clamp the clamp ammeter around the live wire connected to the air switch and use the built-in Hall effect sensor of the clamp ammeter to sense the current passing through the wire. When the live wire is short-circuited or other abnormal current changes occur, the Hall effect sensor inside the clamp ammeter will generate a changing magnetic field. The change in magnetic field will cause the buzzer to be energized, making the buzzer sound and reminding the user that the current circuit is short-circuited or faulty.

[0018] S3. The infrared temperature sensor is used to sense the temperature changes between the contacts and the terminals in real time. When the infrared temperature sensor senses abnormally high temperature, it will send an electrical signal to the control box I and the control box II, so that the pneumatic scissors I and the pneumatic scissors II can cut off the live wire and the neutral wire connected to the air switch in time. At the same time, the arc extinguishing chamber is used to extinguish the arc that may be generated when the circuit is cut, so as to avoid fire caused by high temperature in the circuit when the air switch fails to cut off the circuit in time or fails.

[0019] The beneficial effects of the present invention are as follows: 1. The present invention integrates a short-circuit detection component and a leakage detection component at the wiring terminals of the air switch, which can promptly give an alarm when a short circuit or leakage occurs in the circuit, thereby effectively improving the safety of the system. In addition, by monitoring the changes in current and voltage through the detector and directly monitoring the current changes on the live wire through the leakage detection component, potential safety hazards can be discovered in a timely manner.

[0020] 2. The present invention can integrate a power-off component. When the infrared temperature sensor detects abnormally high temperature, the control box can control the pneumatic scissors I and pneumatic scissors II to start and quickly cut off the live wire and the neutral wire. The auxiliary air switch can also disconnect the circuit in time when a fault occurs, thereby avoiding fire caused by high temperature.

[0021] 3. The present invention can also easily move the detector by moving the components, so that the detection contact is disconnected from the wiring terminal, which is convenient for maintenance and inspection of the air switch and the line. In addition, by using a clamp-on ammeter for non-invasive current detection, the inconvenience caused by disconnecting the circuit can be reduced, simplifying the maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the distribution box plate, air switch and wiring terminals of the present invention.

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the air switch, mounting bracket and short-circuit detection assembly of the present invention.

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the moving component and the short-circuit detection component of the present invention.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the air switch and leakage detection component of the present invention.

[0027] Figure 6 It is a three-dimensional structural schematic diagram of specific components of the leakage detection assembly of the present invention.

[0028] Figure 7 This is a connection diagram of the air switch, power-off assembly and temperature detector of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the mounting bracket, power-off assembly and temperature detector of the present invention.

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of specific components of the power-off assembly of the present invention.

[0031] Fig.10 It is a front view of the air switch and the power-off assembly of the present invention.

[0032] The markings of the components in the accompanying drawings are as follows: 00, neutral wire, 01, live wire, 1, distribution box board, 2, air switch, 201, terminal block, 3, fixing frame, 301, connecting rod, 4, mounting frame, 5, short circuit detection component, 501, detector, 502, slider, 503, spring, 504, detection contact, 505, alarm, 6, leakage detection component, 601, bracket, 602, clamp-on ammeter, 603, buzzer, 7, power-off component, 701, mounting frame, 702, rubber gasket, 703, control box I, 704, pneumatic scissors I, 705, control box II, 706, pneumatic scissors II, 8, temperature detector, 801, connecting frame, 802, infrared temperature sensor, 9, moving component, 901, guide block, 902, push rod, 101, electrostatic guide plate, 102, arc extinguishing chamber. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0034] Embodiment 1: A weak current engineering safety detection device and method thereof, such as Figure 1-Figure 4 As shown, it includes a distribution box board 1 and an air switch 2. A plurality of air switches 2 are installed side by side on the distribution box board 1. The air switch 2 is a carrier for assembling the device. The air switch 2 is symmetrically provided with connection terminals 201 for connecting the neutral line 00 and the live line 01 respectively on the upper and lower sides; a fixing frame 3 is symmetrically installed on the distribution box board 1, and the two fixing frames 3 are located on both sides of the air switch 2; a connecting rod 301 is fixedly connected between the fixing frames 3; a mounting frame 4 is fixedly installed on the connecting rod 301, and the The number of mounting brackets 4 is consistent with the number of the air switches 2, and the mounting brackets 4 are attached to the outside of the air switches 2, and the mounting brackets 4 are C-shaped brackets; a short circuit detection component 5 is arranged at the upper and lower terminals 201 of the air switch 2, and the short circuit detection component 5 is used to monitor whether a short circuit occurs in the line; the short circuit detection component 5 includes a detector 501, a slider 502, a spring 503, a detection contact 504 and an alarm 505, and the detector 501 is symmetrically slidably installed through the sliders 502 at both ends thereof On the mounting frame 4, a spring 503 is provided between the mounting frame 4 and the slider 502, and the detector 501 is provided with two detection contacts 504 for contacting the wiring terminal 201. The detector 501 contacts the wiring terminal 201 through the detection contacts 504, thereby detecting the current and voltage changes on the neutral line 00 and the live line 01. The detector 501 is electrically connected to an alarm 505, and the alarm 505 is used to alarm when the detector 501 detects abnormal current and voltage; a leakage detection component 6, a leakage detection component 6 is provided at the upper and lower ends of the mounting frame 4, and the leakage detection component 6 is used to detect whether the live line 01 has leakage, and the neutral line 00 and the live line 01 connected to the wiring terminal 201 are contacted through the short circuit detection component 5, thereby assisting the air switch 2 to monitor whether a short circuit occurs in the circuit, to avoid an alarm when the line is short-circuited when the air switch 2 fails, and directly monitor the current changes on the live line 01 through the leakage detection component 6, and provide a warning when a line leakage is detected.

[0035] like Figure 4As shown, the upper and lower ends of the mounting frame 4 are both provided with L-shaped grooves, the slider 502 is square and symmetrically slidably arranged in the L-shaped groove of the mounting frame 4, and the mounting frame 4 can position the slider 502 through the L-shaped groove thereon, so that the detection contact 504 on the detector 501 can be stably disconnected from the terminal 201.

[0036] like Figure 1 , Figure 5 and Figure 6 As shown, the leakage detection component 6 includes a bracket 601, a clamp-on ammeter 602 and a buzzer 603. The upper and lower parts of the mounting frame 4 are symmetrically fixed with brackets 601. The clamp-on ammeter 602 is respectively installed on the bracket 601. The current clamp of the clamp-on ammeter 602 is clamped on the live wire 01. The clamp-on ammeter 602 senses the change of the current on the live wire 01 through the built-in Hall effect sensor. The clamp-on ammeter 602 is electrically connected to the buzzer 603. When the clamp-on ammeter 602 senses that the current on the live wire 01 is abnormal, the changing current causes the magnetic field of the built-in Hall effect sensor to change. When the magnetic field changes, an electrical signal will be transmitted to the buzzer 603, so that the buzzer 603 is powered on to alarm.

[0037] After the neutral line 00 and the live line 01 are connected to the upper and lower ends of the air switch 2 respectively, the neutral line 00 and the live line 01 are tightened by the wiring terminal 201, so that the air switch 2 is connected to the neutral line 00 and the live line 01 at the upper and lower ends for normal use, the fixing frame 3 is installed on the distribution box board 1 by bolts, and the fixing frame 3 installs multiple mounting frames 4 on the air switch 2 respectively through the connecting rod 301. At this time, the detection contact 504 on the detector 501 will be in close contact with the wiring terminal 201 connected to the neutral line 00 and the live line 01 under the action of the spring 503. When a short circuit occurs on the neutral line 00 and the live line 01 and the air switch 2 fails to disconnect the circuit in time, the detection contact 504 will conduct the abnormal voltage to the detector 501 When the detector 501 detects a voltage abnormality caused by a short circuit, the detector 501 will send an electrical signal to the alarm 505, causing the alarm 505 to sound an alarm, thereby reminding the user that there is a short circuit in the circuit and that the air switch 2 and the circuit need to be checked for faults. When a leakage occurs on the live wire 01, the current on the live wire 01 will be abnormal. At this time, the abnormal change in current will cause the magnetic field of the Hall effect sensor in the clamp-on ammeter 602 to change synchronously. When the magnetic field changes abnormally for a long time, the clamp-on ammeter 602 will send an induced electrical signal to the buzzer 603, so that after the buzzer 603 is powered on, it will remind the user that there is a leakage in the current live wire 01 circuit, which requires the user to check and repair it in time.

[0038] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 7 , Figure 8 and Fig. 9 As shown, the upper and lower parts of the air switch 2 are both provided with a power-off assembly 7, and the power-off assembly 7 includes: a mounting frame 701, symmetrically mounted on the upper and lower sides of the air switch 2, the mounting frame 701 is an L-shaped chamber, and the neutral line 00 and the live line 01 are both passed through it and connected to the wiring terminal 201; a control box I 703, mounted in the mounting frame 701 near the live line 01; a pneumatic scissors I 704, mounted in the control box I 703, and the pneumatic scissors I 704 are used to cut the live line 01; a control box II 705, mounted in the mounting frame 701 near the neutral line 00; a pneumatic scissors II 706, installed in the control box II 705, the pneumatic scissors II 706 is used to cut the neutral line 00; the thermometer 8 is arranged on the mounting frame 4, the thermometer 8 is used to monitor the temperature on the air switch 2; the power-off component 7 also includes a rubber gasket 702, the rubber gasket 702 is respectively arranged at the connection between the neutral line 00 and the live line 01 passing through the mounting frame 701, the rubber gasket 702 is used to block the arc overflow generated when the pneumatic scissors I 704 and the pneumatic scissors II 706 cut the live line 01 and the neutral line 00 respectively, thereby improving the safety of the power-off component 7 when it is powered off.

[0039] like Figure 1 , Figure 7 and Figure 8 As shown, the thermometer 8 includes a connecting frame 801 and an infrared temperature sensor 802. The connecting frame 801 is installed on the top of the mounting frame 4. The connecting frame 801 is provided with infrared temperature sensors 802 of the same number as the air switch 2. The infrared temperature sensor 802 is used to sense the temperature of the contact end between the adjacent detection contact 504 and the terminal 201. The infrared temperature sensor 802 is electrically connected to the adjacent control box I 703. The infrared temperature sensor 802 is also electrically connected to the adjacent control box II 705. The infrared temperature sensor 802 When abnormally high temperatures are detected on the detection contact 504 and the terminal 201, the pneumatic scissors I704 and the pneumatic scissors II706 can be activated through the control box I703 and the control box II705, and the live wire 01 and the neutral wire 00 connected to the upper and lower parts of the air switch 2 can be cut off respectively, so as to avoid fire caused by continuous high temperature caused by circuit failure; the handles and the backs of the pneumatic scissors I704 and the pneumatic scissors II706 are made of insulating materials. When the pneumatic scissors I704 and the pneumatic scissors II706 cut off the live wire 01 and the neutral wire 00 respectively, they can isolate the current from being conducted to the outside.

[0040] like Fig. 9 and Fig.10As shown, an electrostatic conductor 101 and an arc extinguishing chamber 102 are arranged inside the installation frame 701. The electrostatic conductor 101 is arranged inside the installation frame 701 on the side close to the live wire 01. The electrostatic conductor 101 is a curved metal plate. The electrostatic conductor 101 is used to conduct the arc that may be generated after the pneumatic scissors I704 cuts off the live wire 01. The arc extinguishing chamber 102 is arranged on the upper part of the inner wall of the installation frame 701. The electrostatic conductor 101 guides into the arc extinguishing chamber 102. A plurality of arc extinguishing grids are arranged inside the arc extinguishing chamber 102. The arc extinguishing chamber 102 is used to eliminate the arc guided by the electrostatic conductor 101.

[0041] Before connecting the neutral line 00 and the live line 01 to the air switch 2 through the wiring terminal 201, the installation frame 701 can be installed on the upper and lower sides of the air switch 2 respectively, and after the neutral line 00 and the live line 01 pass through the rubber gasket 702 and enter the installation frame 701, they pass through the bottom of the installation frame 701 and are connected to the air switch 2 through the wiring terminal 201. When a short circuit or other fault occurs on the neutral line 00 and the live line 01, and the air switch 2 fails to be powered off, a high temperature will be generated between the wiring terminal 201 and the detection contact 504 due to the short circuit. At this time, when the infrared temperature sensor 802 senses the high temperature for a long time, it will send an electrical signal to the control box I 703, and the control box I 703 will be powered on and the pneumatic scissors I 704 will be activated to make the pneumatic scissors I 704 cut the live line 01 inwards. At the same time, the infrared temperature sensor 80 2 will also send an electrical signal to the control box II 705, so that the control box II 705 is powered on and drives the pneumatic scissors I 704 to cut the neutral line 00 inward, so that once the air switch 2 fails and cannot disconnect the circuit in time, the live wire 01 and the neutral line 00 connected at both ends of the air switch 2 can be cut in time, thereby preventing the current from flowing further and avoiding the circuit from continuing to be hot and causing a fire. When the live wire 01 is cut by the pneumatic scissors I 704, the high-voltage arc that may be generated on the live wire 01 will be guided to the arc extinguishing chamber 102 through the electrostatic guide plate 101, and the arc is physically divided by the multiple arc extinguishing grids in the arc extinguishing chamber 102, and the length of the arc is increased. At the same time, the arc is stretched by the magnetic field and the heat of the arc is absorbed, so as to effectively reduce the energy density of the arc, accelerate the cooling and extinguishing process of the arc, and avoid the arc overflowing and causing high temperature.

[0042] Embodiment 3: Based on embodiment 2, Figure 1 , Figure 3 and Figure 4As shown, the mounting frame 4 is provided with movable components 9 of the same number as the air switches 2, and the movable components 9 include a guide block 901 and a push rod 902. The guide block 901 is slidably installed on one side of the mounting frame 4 through a slide groove thereon, and the push rod 902 is fixed to the end of the guide block 901. The push rod 902 is an inclined rod with inclined ends. The push rod 902 is used to squeeze the slider 502 on the same air switch 2, so as to facilitate moving the detector 501 and disconnect the detection contact 504 from the terminal 201.

[0043] When it is necessary to disconnect the detection contact 504 and the terminal 201, the user can directly push the push rod 902 through the guide block 901, so that the pushed push rod 902 is squeezed forward on the slider 502, and the squeezed slider 502 will overcome the elastic force of the spring 503 and drive the detector 501 to move forward. At this time, the forward-moving detector 501 will synchronously drive the detection contact 504 and the alarm 505 to move as a whole, and under the continuous squeezing of the inclined surface of the push rod 902, the slider 502 is pushed into the corner of the L-shaped slide groove at the end of the mounting frame 4, and the slider 502 will be stuck in the L-shaped slide groove of the mounting frame 4 and cannot be reset under the action of the spring 503, thereby disengaging the detection contact 504 and the terminal 201 on the same air switch 2, thereby facilitating the inspection and maintenance of the air switch 2 or the circuit.

[0044] A method for using a weak current engineering safety detection device comprises the following steps:

[0045] S1. After connecting the neutral line 00 and the live line 01 to the air switch 2 respectively by using the wiring terminal 201, the two detection contacts 504 are respectively contacted with the wiring terminals 201 connecting the neutral line 00 and the live line 01, and the detector 501 is used to detect the voltage change on the neutral line 00 and the live line 01. When the detector 501 detects the voltage abnormality, it will send an electrical signal to the alarm 505, so that the alarm 505 will alarm and remind the user of the voltage abnormality;

[0046] S2. Clamp the clamp ammeter 602 around the live wire 01 connected to the air switch 2, and use the built-in Hall effect sensor of the clamp ammeter 602 to sense the current passing through the wire. When the live wire 01 is short-circuited or other abnormal current changes occur, the Hall effect sensor inside the clamp ammeter 602 will generate a changing magnetic field. The change in the magnetic field will cause the buzzer 603 to be energized, so that the buzzer 603 beeps and reminds the user that the current circuit is short-circuited or faulty.

[0047] S3. The infrared temperature sensor 802 is used to sense the temperature change between the contact 504 and the terminal 201 in real time. When the infrared temperature sensor 802 senses abnormally high temperature, it will send an electrical signal to the control box I703 and the control box II705, so that the pneumatic scissors I704 and the pneumatic scissors II706 can cut off the live wire 01 and the neutral wire 00 connected to the air switch 2 in time. At the same time, the arc extinguishing chamber 102 is used to extinguish the arc that may be generated when the circuit is cut, so as to avoid fire caused by high temperature in the circuit when the air switch 2 fails to cut off the circuit in time or fails.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A weak current engineering safety detection device, comprising a distribution box (1) and an air switch (2), wherein a plurality of air switches (2) are installed side by side on the distribution box (1), and the air switch (2) is symmetrically provided with connection terminals (201) for connecting a neutral line (00) and a live line (01) respectively at the upper and lower parts; Its characteristics are: Also included are: A fixing frame (3) is symmetrically mounted on the distribution box plate (1), and the two fixing frames (3) are located on both sides of the air switch (2); A connecting rod (301) fixedly connected between the fixing frames (3); A mounting frame (4) is fixedly mounted on the connecting rod (301), the number of the mounting frames (4) is the same as the number of the air switches (2), and the mounting frames (4) are attached to the outside of the air switches (2); A short circuit detection component (5) is arranged at the upper and lower wiring terminals (201) of the air switch (2), and the short circuit detection component (5) is used to monitor whether a short circuit occurs in the line; The short circuit detection assembly (5) comprises a detector (501), a slider (502), a spring (503), a detection contact (504) and an alarm (505); the detector (501) is symmetrically slidably mounted on the mounting frame (4) via the sliders (502) at both ends of the detector (501); a spring (503) is provided between the mounting frame (4) and the slider (502); two detection contacts (504) for contacting the wiring terminals (201) are provided on each of the detectors (501); the detector (501) contacts the wiring terminals (201) via the detection contacts (504) to detect current and voltage changes on the neutral line (00) and the live line (01); the detector (501) is electrically connected to the alarm (505); the alarm (505) is used to sound an alarm when the detector (501) detects abnormal current and voltage; A leakage detection component (6) is provided at both the upper and lower ends of the mounting frame (4), and the leakage detection component (6) is used to detect whether the live wire (01) has leakage.

2. A weak current engineering safety detection device according to claim 1, characterized in that: The upper and lower ends of the mounting frame (4) are both provided with L-shaped sliding grooves, the sliding block (502) is square and is symmetrically slidably arranged in the L-shaped sliding grooves on the lower and upper parts of the mounting frame (4), and the mounting frame (4) can position the sliding block (502) through the L-shaped sliding grooves thereon, so that the detection contact (504) on the detector (501) can be stably disconnected from the wiring terminal (201).

3. A weak current engineering safety detection device according to claim 2, characterized in that: The leakage detection component (6) comprises a bracket (601), a clamp-on ammeter (602) and a buzzer (603); the upper and lower parts of the mounting frame (4) are symmetrically fixed with the bracket (601); the clamp-on ammeter (602) is respectively mounted on the bracket (601); the current clamp of the clamp-on ammeter (602) is clamped on the live wire (01); the clamp-on ammeter (602) senses the change of the current on the live wire (01) through a built-in Hall effect sensor; and the clamp-on ammeter (602) is electrically connected to the buzzer (603).

4. A weak current engineering safety detection device according to claim 3, characterized in that: The upper and lower parts of the air switch (2) are both provided with a power-off assembly (7), and the power-off assembly (7) comprises: a mounting frame (701) symmetrically mounted on the upper and lower sides of the air switch (2), the mounting frame (701) being an L-shaped chamber, and the neutral line (00) and the live line (01) are both passed through the chamber and connected to the wiring terminal (201); A control box I (703), installed in the installation frame (701) close to the live line (01); Pneumatic scissors I (704), installed in the control box I (703), the pneumatic scissors I (704) are used to cut the live wire (01); A control box II (705) is installed in the installation frame (701) close to the neutral line (00); Pneumatic scissors II (706), installed in the control box II (705), the pneumatic scissors II (706) are used to cut the neutral line (00); A temperature detector (8) is arranged on the mounting frame (4), and the temperature detector (8) is used to monitor the temperature on the air switch (2).

5. A weak current engineering safety detection device according to claim 4, characterized in that: The power-off assembly (7) further comprises a rubber gasket (702), wherein the rubber gasket (702) is respectively arranged at the connection point where the neutral line (00) and the live line (01) pass through the installation frame (701), and the rubber gasket (702) is used to prevent the arc generated when the pneumatic scissors I (704) and the pneumatic scissors II (706) cut the live line (01) and the neutral line (00) respectively from overflowing.

6. A weak current engineering safety detection device according to claim 5, characterized in that: The temperature detector (8) comprises a connecting frame (801) and an infrared temperature sensor (802). The connecting frame (801) is mounted on the top of the mounting frame (4). The connecting frame (801) is provided with infrared temperature sensors (802) whose number is the same as that of the air switches (2). The infrared temperature sensors (802) are used to sense the temperature of the contact ends of the adjacent detection contacts (504) and the connection terminals (201). The infrared temperature sensor (802) is electrically connected to the adjacent control box I (703). The infrared temperature sensor (802) is also electrically connected to the adjacent control box II (705).

7. A weak current engineering safety detection device according to claim 6, characterized in that: The handles and backs of the pneumatic scissors I (704) and the pneumatic scissors II (706) are both made of insulating materials.

8. A weak current engineering safety detection device according to claim 7, characterized in that: An electrostatic guide plate (101) and an arc extinguishing chamber (102) are arranged inside the installation frame (701); the electrostatic guide plate (101) is arranged inside the installation frame (701) on a side close to the live wire (01); the electrostatic guide plate (101) is a curved metal plate; the arc extinguishing chamber (102) is arranged on the upper part of the inner wall of the installation frame (701); the electrostatic guide plate (101) is guided into the arc extinguishing chamber (102); and the arc extinguishing chamber (102) is used to eliminate the arc guided by the electrostatic guide plate (101).

9. A weak current engineering safety detection device according to claim 8, characterized in that: The mounting frame (4) is provided with a number of movable components (9) that is the same as the number of the air switches (2). The movable components (9) include a guide block (901) and a push rod (902). The guide block (901) is slidably mounted on one side of the mounting frame (4) through a sliding groove thereon. The push rod (902) is fixed to the end of the guide block (901). The push rod (902) is an inclined rod with inclined ends. The push rod (902) is used to squeeze a slider (502) on the same air switch (2).

10. A method for using a weak current engineering safety detection device, which uses the weak current engineering safety detection device as claimed in claim 9, characterized in that: The following steps are involved: S1. After the neutral line (00) and the live line (01) are connected to the air switch (2) respectively by using the connection terminal (201), the two detection contacts (504) are respectively contacted with the connection terminals (201) connected to the neutral line (00) and the live line (01), and the detector (501) is used to detect the voltage change on the neutral line (00) and the live line (01). When the detector (501) detects that the voltage is abnormal, it will send an electrical signal to the alarm (505), so that the alarm (505) alarms and reminds the user of the voltage abnormality; S2, clamping the clamp-on ammeter (602) around the live wire (01) connected to the air switch (2), using the built-in Hall effect sensor of the clamp-on ammeter (602) to sense the current passing through the wire, when the live wire (01) is short-circuited or other abnormal current changes occur, the Hall effect sensor inside the clamp-on ammeter (602) will generate a changing magnetic field, and the change in the magnetic field will cause the buzzer (603) to be energized, causing the buzzer (603) to sound and remind the user that the current circuit is short-circuited or faulty; S3. The infrared temperature sensor (802) senses the temperature change between the detection contact (504) and the terminal (201) in real time. When the infrared temperature sensor (802) senses abnormally high temperature, it sends an electrical signal to the control box I (703) and the control box II (705), so that the pneumatic scissors I (704) and the pneumatic scissors II (706) promptly cut off the live wire (01) and the neutral wire (00) connected to the air switch (2). At the same time, the arc extinguishing chamber (102) is used to extinguish the arc that may be generated when the circuit is cut, so as to avoid the fire caused by the high temperature of the circuit when the air switch (2) fails to cut off the circuit in time or fails.

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