Residential user electric meter box with electric leakage alarm function

By introducing a zero-sequence current transformer and a temperature-sensing adjustable ventilation hole into the meter box, the problem of insufficient leakage alarm in traditional meter boxes is solved, enabling real-time alarm and equipment protection, and improving power safety and equipment lifespan.

CN120709849AInactive Publication Date: 2025-09-26郭强
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Patent Information

Application Number
CN202510834633.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-20
Publication Date
2025-09-26
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Traditional meter boxes lack real-time monitoring and timely alarm functions when there is a leakage, making it difficult to detect the leakage in time and increasing the risk of electric shock and fire.

Method used

A zero-sequence current transformer is used to monitor leakage current in real time, and a buzzer and alarm light are controlled by a microcontroller to issue alarm signals. At the same time, remote monitoring is realized. Combined with temperature sensing to adjust the ventilation holes and protective mesh cover automatically, safety and equipment life are ensured.

Benefits of technology

It enables real-time alarm for leakage current, reduces the risk of electric shock and fire, improves electrical safety, and allows for timely handling through remote monitoring, protecting equipment from dust and foreign objects.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of residential electricity meter boxes, and provides a residential electricity meter box with an electric leakage alarm function, which comprises a box body, a support frame is arranged in the box body, the support frame is in bolt connection with a mounting plate, and a zero sequence current transformer, a single chip microcomputer and a wireless communication module are arranged on the mounting plate. A buzzer is fixedly installed outside the box body, a cabinet door is hinged to the box body, an alarm lamp is fixedly installed on the cabinet door, and the single-chip microcomputer is electrically connected with the zero sequence current transformer, the wireless communication module, the buzzer and the alarm lamp. Leakage current of a line is monitored in real time through the zero-sequence current transformer, once the leakage current exceeds a set threshold value, the single-chip microcomputer immediately controls the buzzer and the alarm lamp to send out an alarm signal, a user and maintenance personnel are reminded to handle in time, electric shock and fire accidents are prevented, meanwhile, the single-chip microcomputer controls the wireless communication module, and the wireless communication module is connected with the wireless communication module. Alarm information is sent to a monitoring center of an electric power company in real time, and remote monitoring is achieved.
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Description

Technical Field

[0001] The invention belongs to the technical field of residential electric meter boxes, in particular to a residential electric meter box with a leakage alarm function. Background Art

[0002] The residential electricity meter box is a device installed in residential buildings for measuring and controlling residential electricity consumption. It is generally installed in the corridors, stairwells, basements or appropriate locations indoors. It is used to accurately measure the electricity consumption of residential users, provide a basis for electricity bill settlement, and protect the circuit from overload, short circuit and leakage through devices such as circuit breakers and leakage protectors to ensure the safety of residential electricity use and the normal operation of power equipment.

[0003] When a leakage occurs in a traditional electricity meter box, due to the lack of real-time monitoring and timely alarm functions, it is often unable to quickly detect the leakage. People can only detect it when the leakage causes obvious faults, such as a short circuit causing the circuit breaker to trip, electric sparks or smoke, and other serious situations. At this time, the leakage may have lasted for some time, increasing the risk of electric shock and fire.

[0004] Therefore, those skilled in the art have proposed a residential electricity meter box with a leakage alarm function to solve the problems raised in the background art. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a residential user meter box with a leakage alarm function to solve the problem that traditional meter boxes in the prior art are often unable to quickly detect leakage due to the lack of real-time monitoring and timely alarm functions when leakage occurs. People can only detect it when the leakage causes obvious faults, such as short circuits causing circuit breaker tripping, electric sparks or smoke, and other serious situations. At this time, the leakage may have continued for some time, increasing the risk of electric shock and fire.

[0006] A residential electricity meter box with a leakage alarm function includes a box body, a support frame is provided inside the box body, the support frame is bolted to a mounting plate, a zero-sequence current transformer, a single-chip microcomputer and a wireless communication module are provided on the mounting plate, a buzzer is fixedly installed on the outside of the box body, a cabinet door is hinged on the box body, an alarm light is fixedly installed on the cabinet door, and the single-chip microcomputer is electrically connected to the zero-sequence current transformer, the wireless communication module, the buzzer and the alarm light respectively.

[0007] Preferably, the box body is provided with a ventilation hole, an adjustment component is provided at one end of the ventilation hole, the adjustment component is connected to a trigger component, and a shield component is provided at the other end of the ventilation hole.

[0008] Preferably, the adjustment assembly includes a mounting ring, which is fixedly connected to the box body and located at one end of the ventilation hole. The mounting ring is provided with a guide frame, the guide frame has a guide groove, the guide groove is slidably connected to an adjustment plate, the two adjustment plates are fixedly connected to a guide rod, the mounting ring is rotatably connected to a rotating disk, the rotating disk has a through hole and a guide groove, and the guide rod is located in the guide groove.

[0009] Preferably, the mounting ring and the guide frame are integrally formed, the guide groove is an arc-shaped groove, and the diameters of the through hole and the ventilation hole are equal.

[0010] Preferably, an auxiliary groove is provided on a side of the mounting ring close to the rotating disk, and an auxiliary foot is connected to one end of the rotating disk close to the mounting ring, and the auxiliary foot is slidably connected to the auxiliary groove.

[0011] Preferably, the trigger assembly includes a bimetallic strip, the bimetallic strip is fixedly connected to a first mounting seat, the first mounting seat is fixedly connected to the box body, the box body is fixedly mounted with a second mounting seat, the second mounting seat is fixedly connected to a spring, the spring is fixedly connected to a trigger rod, the trigger rod is fixedly connected to the rotating disk, and the bimetallic strip is against the trigger rod.

[0012] Preferably, the shield assembly includes a protective mesh cover, which is fixedly connected to the box body and located at the other end of the ventilation hole. The protective mesh cover is fixedly connected to a steel wire rope, and two of the steel wire ropes are fixedly connected to the adjustment plate respectively.

[0013] Preferably, the number of the adjustment assembly, the trigger assembly and the mask assembly matches the number of the ventilation holes, and the mounting ring, the through hole and the ventilation holes are coaxially arranged.

[0014] Preferably, a shielding top is fixedly mounted on the upper surface of the box body, and a guide plate is fixedly mounted on the shielding top.

[0015] Preferably, the cabinet door is provided with an observation window, and the box body is provided with a mounting opening.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention monitors the leakage current of the line in real time through a zero-sequence current transformer. Once the leakage current exceeds the set threshold, the single-chip microcomputer immediately controls the buzzer and alarm light to send an alarm signal to remind users and maintenance personnel to deal with it in time to prevent electric shock and fire accidents. At the same time, the single-chip microcomputer controls the wireless communication module to send the alarm information to the monitoring center of the power company in real time to realize remote monitoring. Users can receive alarm information through the mobile phone APP and understand the electricity safety status at any time. It effectively solves the problem that traditional meter boxes cannot detect leakage in time and improves electricity safety.

[0018] 2. In the present invention, with the arrival of the peak of electricity consumption, the temperature inside the box gradually rises, the bimetallic strip is bent by the heat, and the trigger lever is toggled, which drives the rotating disk to rotate. The guide groove on the rotating disk pushes the guide rod to move, and the guide rod drives the adjusting plate to move along the guide groove. At this time, the two adjusting plates move away from each other, exposing the ventilation holes, thereby expanding the effective ventilation area. The outside cold air enters the box through the ventilation holes and through holes at the bottom of the box, and the hot air in the box is discharged to the outside through the through holes and ventilation holes at the top of the box. The heat in the box is driven by the air flow to complete the cooling. When the temperature inside the box returns to normal, the bimetallic strip returns to its original state, the spring pushes the trigger lever to reset, and the trigger lever drives the rotating disk to rotate in the opposite direction. The guide groove on the rotating disk pushes the guide rod to move, driving the adjusting plate to move along the guide groove. At this time, the two adjusting plates are close to each other, blocking the ventilation holes, thereby reducing the possibility of external dust and insects entering.

[0019] 3. The present invention connects the protective mesh cover to the adjustment plate through a steel wire rope. When the adjustment plate moves to expose the ventilation holes, the protective mesh cover will be pulled. At this time, the protective mesh cover will shrink and the mesh holes will become smaller, forming a tighter protective barrier to prevent larger foreign objects, insects, etc. from entering. When the adjustment plate blocks the ventilation holes, the steel wire rope no longer pulls the protective mesh cover, and the protective mesh cover relies on its own elasticity to return to its original shape. The protective mesh cover vibrates when it is deformed and restored to its original shape, which can shake off the dust on the protective mesh cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall schematic diagram of a residential user's electric meter box with a leakage alarm function;

[0021] Figure 2 This is a front view of a residential user's electric meter box with a leakage alarm function;

[0022] Figure 3 A first schematic diagram of an adjustment component, a trigger component, and a shield component of a residential user's electric meter box with a leakage alarm function;

[0023] Figure 4 A second schematic diagram of an adjustment component, a trigger component, and a shield component of a residential user's electric meter box with a leakage alarm function;

[0024] Figure 5 This is an exploded schematic diagram of the parts of the adjustment component, trigger component and shield component of a residential user electric meter box with a leakage alarm function;

[0025] Figure 6 The present invention is a cross-sectional view of an adjustment component, a trigger component and a shield component of a residential user's electric meter box with a leakage alarm function.

[0026] In the picture:

[0027] 1. Box body; 2. Support frame; 3. Mounting plate; 4. Zero-sequence current transformer; 5. Single-chip microcomputer; 6. Wireless communication module; 7. Buzzer; 8. Cabinet door; 9. Alarm light; 10. Ventilation hole; 11. Adjustment assembly; 1101. Mounting ring; 1102. Guide frame; 1103. Guide groove; 1104. Adjustment plate; 1105. Guide rod; 1106. Rotating disk; 1107. Through hole; 1108. Guide groove; 1109. Auxiliary groove; 1110. Auxiliary foot; 12. Trigger assembly; 1201. Bimetallic strip; 1202. First mounting seat; 1203. Second mounting seat; 1204. Spring; 1205. Trigger rod; 13. Shield assembly; 1301. Protective mesh cover; 1302. Wire rope; 14. Shielding top; 15. Drainage plate; 16. Observation window; 17. Mounting port. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0029] Example 1

[0030] As attached Figure 1 To the attached Figure 2As shown, this embodiment provides a residential user electric meter box with a leakage alarm function, including a box body 1, wherein the box body 1 and the cabinet door 8 are made of stainless steel material with good waterproof and moisture-proof properties. A support frame 2 is provided inside the box body 1, and the support frame 2 is bolted to a mounting plate 3. The support frame 2 and the mounting plate 3 inside the box body 1 provide a stable installation platform for zero-sequence current transformer 4, single-chip microcomputer 5, wireless communication module 6, electric energy meter, circuit breaker, leakage protector and other equipment to ensure the stability of the equipment during operation. The zero-sequence current transformer 4, single-chip microcomputer 5 and wireless communication module 6 are provided on the mounting plate 3. A buzzer 7 is fixedly installed on the outside of the box body 1, and a cabinet door 8 is hingedly connected to the box body 1. An alarm light 9 is fixedly installed on the cabinet door 8. The single-chip microcomputer 5 is electrically connected to the zero-sequence current transformer 4, wireless communication module 6, buzzer 7 and alarm light 9 respectively. The zero-sequence current transformer 4 is used to monitor the leakage current of the line in real time. Once the leakage When the current exceeds the set threshold, the single-chip microcomputer 5 immediately controls the buzzer 7 and the alarm light 9 to send out an alarm signal to remind users and maintenance personnel to deal with it in time to prevent electric shock and fire accidents. At the same time, the single-chip microcomputer 5 controls the wireless communication module 6 to send the alarm information to the power company's monitoring center in real time to realize remote monitoring. The wireless communication module 6 adopts the LoRa module, which is a long-distance, low-power wireless technology suitable for scenarios such as Internet of Things devices and remote monitoring systems. The LoRa module has excellent penetration ability and low power consumption characteristics, and can realize long-distance data transmission and communication. For example, the LoRa transceiver module model RN2483 produced by Microchip is simple, easy to use and low-power. The model of the zero-sequence current transformer 4 is LXK-80, and the manufacturer is Zhejiang Yukai Electric Power Technology Co., Ltd. The model of the single-chip microcomputer 5 is DY-KFB, and the manufacturer is Hangzhou Umbrella Automation Technology Co., Ltd.

[0031] As can be seen from the above, the support frame 2 and the mounting plate 3 provide an installation platform for zero-sequence current transformer 4, single-chip microcomputer 5, wireless communication module 6, electric energy meter, circuit breaker, leakage protector and other equipment to ensure the stability of the equipment during operation. The leakage current of the line is monitored in real time through the zero-sequence current transformer 4. Once the leakage current exceeds the set threshold, the single-chip microcomputer 5 immediately controls the buzzer 7 and the alarm light 9 to send an alarm signal to remind users and maintenance personnel to deal with it in time to prevent electric shock and fire accidents. At the same time, the single-chip microcomputer 5 controls the wireless communication module 6 to send the alarm information to the monitoring center of the power company in real time to realize remote monitoring. Users can receive alarm information through mobile phone APP and understand the safety status of electricity use at any time. It effectively solves the problem that traditional meter boxes cannot detect leakage in time and improves the safety of electricity use.

[0032] Example 2

[0033] As attached Figure 1 To the attached Figure 6As shown, this embodiment is basically the same as the previous embodiment, except that the box body 1 is provided with ventilation holes 10, and the ventilation holes 10 are respectively located above and below the box body 1, forming a channel in the box body 1. Cold air enters the box body 1 through the ventilation holes 10 located below the box body 1 to cool down, and hot air rises and is discharged to the outside through the ventilation holes 10 located above the box body 1, thereby realizing air flow. An adjustment component 11 is provided at one end of the ventilation hole 10, and the adjustment component 11 is connected to a trigger component 12. A shield component 13 is provided at the other end of the ventilation hole 10, wherein the trigger component 12 will be adjusted according to the temperature. The temperature inside the box 1 deforms, thereby driving the adjustment component 11 to work. According to the temperature inside the box 1, the adjustment component 11 will expose or block the ventilation holes 10. When the temperature is high, the adjustment component 11 exposes the ventilation holes 10 to improve the heat dissipation capacity. At the same time, the adjustment component 11 drives the mask component 13 to deform, thereby improving the ability to block dust or foreign matter. When the temperature is low, the adjustment component 11 blocks the ventilation holes 10 to prevent dust or foreign matter from entering the box 1 and affecting the life of the equipment. At the same time, the mask component 13 returns to its original state, and the dust attached to the mask component 13 falls off due to the vibration of deformation and restoration, ensuring air circulation.

[0034] Specifically, the adjustment assembly 11 includes a mounting ring 1101, which is fixedly connected to the box body 1 and is located at one end of the ventilation hole 10. The mounting ring 1101 is provided with a guide frame 1102, and the guide frame 1102 is provided with a guide groove 1103. The guide groove 1103 is slidably connected to an adjustment plate 1104. When the two adjustment plates 1104 are at the maximum distance from each other, the ventilation capacity of the ventilation hole 10 is at the maximum state. The two adjustment plates 1104 are fixedly connected to a guide rod 1105. The mounting ring 11 01 is rotatably connected to a rotating disk 1106, which is provided with a through hole 1107 and a guide groove 1108. The guide rod 1105 is located in the guide groove 1108. When the rotating disk 1106 rotates, the guide rod 1105 is moved by the rotation of the guide groove 1108, thereby causing the adjustment plate 1104 to move along the guide groove 1103. According to the rotation direction of the rotating disk 1106, the two adjustment plates 1104 move closer to or farther away from each other, thereby controlling the ventilation capacity of the ventilation hole 10.

[0035] Furthermore, the mounting ring 1101 and the guide frame 1102 are integrally formed, the guide groove 1108 is an arc-shaped groove, and the diameter of the through hole 1107 is equal to that of the ventilation hole 10.

[0036] Furthermore, an auxiliary groove 1109 is provided on one side of the mounting ring 1101 close to the rotating disk 1106, and an auxiliary foot 1110 is connected to one end of the rotating disk 1106 close to the mounting ring 1101. The bottom of the auxiliary foot 1110 is provided with an enlarged end to prevent the auxiliary foot 1110 from being separated from the auxiliary groove 1109. The auxiliary foot 1110 is slidably connected to the auxiliary groove 1109, and the rotating disk 1106 can rotate on the mounting ring 1101 through the cooperation between the auxiliary groove 1109 and the auxiliary foot 1110.

[0037] Furthermore, the trigger assembly 12 includes a bimetallic strip 1201, wherein the passive layer of the bimetallic strip 1201 is FeNi36, and the active layer is FeNi20Mn6. The thermal expansion coefficient of FeNi20Mn6 is relatively high, which is comparable to that of FeNi. After the assembly of 36, when the temperature exceeds 40°C, the bimetallic strip 1201 will bend significantly, and then the trigger rod 1205 will be toggled to rotate the rotating disk 1106. At this time, the spring 1204 is compressed, and the bimetallic strip 1201 is fixedly connected to the first mounting seat 1202, and the first mounting seat 1202 is fixedly connected to the box body 1, and the box body 1 is fixedly installed with the second mounting seat 1203, and the second mounting seat 1203 is fixedly connected to the spring 1204. When the bimetallic strip 1201 returns to its original shape, the trigger rod 1205 is no longer squeezed by the bimetallic strip 1201. At this time, the spring 1204 returns to its original shape and drives the trigger rod 1205 to reset. The spring 1204 is fixedly connected to the trigger rod 1205, and the trigger rod 1205 is fixedly connected to the rotating disk 1106. The bimetallic strip 1201 and the trigger rod 1205 are offset.

[0038] Furthermore, the shield assembly 13 includes a protective mesh cover 1301, which is fixedly connected to the box body 1 and is located at the other end of the ventilation hole 10. The protective mesh cover 1301 is fixedly connected to a steel wire rope 1302, and the two steel wire ropes 1302 are respectively fixedly connected to the adjustment plate 1104. The protective mesh cover 1301 has a certain elasticity. When the adjustment plate 1104 pulls the steel wire rope 1302, the protective mesh cover 1301 shrinks and the mesh becomes smaller, forming a tighter protective barrier. When the adjustment plate 1104 is reset, the steel wire rope 1302 no longer pulls the protective mesh cover 1301, and the protective mesh cover 1301 relies on elasticity to restore to its original state.

[0039] Furthermore, the number of the adjustment assembly 11 , the trigger assembly 12 and the mask assembly 13 matches the number of the ventilation holes 10 , and the mounting ring 1101 , the through hole 1107 and the ventilation holes 10 are coaxially arranged.

[0040] As can be seen from the above, with the arrival of the peak of electricity consumption, the temperature in the box 1 gradually rises, the bimetallic strip 1201 is bent by the heat, and the trigger rod 1205 is toggled. At this time, the spring 1204 is compressed, and the trigger rod 1205 drives the rotating disk 1106 to rotate. The guide groove 1108 on the rotating disk 1106 pushes the guide rod 1105 to move, and the guide rod 1105 drives the adjustment plate 1104 to move along the guide groove 1103. At this time, the two adjustment plates 1104 move away from each other, and the ventilation hole 1 is opened. 0 is exposed, which expands the effective ventilation area. External cold air enters the box body 1 through the ventilation holes 10 and the through holes 1107 at the bottom of the box body 1, and the hot air in the box body 1 is discharged to the outside through the through holes 1107 and the ventilation holes 10 at the top of the box body 1. The heat in the box body 1 is driven by air flow to achieve cooling. When the two adjustment plates 1104 move, the protective net cover 1301 is pulled by the steel wire rope 1302. At this time, the protective net cover 1301 shrinks and the mesh becomes smaller, forming a tighter protective barrier.

[0041] When the temperature in the box 1 returns to normal, the bimetallic strip 1201 returns to its original state and no longer squeezes the trigger rod 1205. At this time, the spring 1204 pushes the trigger rod 1205 to reset, and the trigger rod 1205 drives the rotating disk 1106 to rotate in the opposite direction. The guide groove 1108 on the rotating disk 1106 pushes the guide rod 1105 to move, driving the adjustment plate 1104 to move along the guide groove 1103. At this time, the two adjustment plates 1104 are close to each other, blocking the ventilation hole 10. When the distance between the two adjustment plates 1104 is the shortest, the ventilation hole 10 still has a ventilation function and is not blocked, reducing the possibility of external dust and insects entering. When the two adjustment plates 1104 are close to each other, the adjustment plates 1104 no longer pull the protective mesh cover 1301 through the wire rope 1302. At this time, the protective mesh cover 1301 returns to its original state. The protective mesh cover 1301 vibrates when it deforms and returns to its original state, which can shake off the dust on the protective mesh cover 1301.

[0042] Example 3

[0043] As attached Figure 1 To the attached Figure 2 As shown, this embodiment is basically the same as the previous embodiment, with the difference that a shielding top 14 is fixedly installed on the upper surface of the box body 1. By setting the shielding top 14, the ventilation holes 10 above the box body 1 are shielded to reduce the possibility of rainwater and foreign matter entering the box body 1. The shielding top 14 is fixedly installed with a guide plate 15, wherein the guide plate 15 is an arc-shaped plate. After the hot air in the box body 1 is discharged from the ventilation holes 10 above the box body 1, it will flow along the arc surface of the guide plate 15 to avoid heat accumulation above the box body 1.

[0044] Specifically, the cabinet door 8 is provided with an observation window 16. The observation window 16 makes it convenient for maintenance personnel to check the status of the equipment inside the box 1. Daily inspections can be carried out without opening the cabinet door 8, thereby improving safety. The box 1 is provided with an installation port 17. The installation port 17 facilitates the installation and disassembly operations of the box 1, thereby improving installation efficiency.

[0045] As can be seen from the above, maintenance personnel can conveniently install and disassemble the box 1 through the installation opening 17, thereby improving the efficiency of installation. During daily inspections, there is no need to open the cabinet door 8. Maintenance personnel can check the status of the equipment inside the box 1 through the observation window 16, thereby improving safety. The shielding top 14 provides shielding for the ventilation holes 10 above the box 1, reducing the possibility of fly ash and foreign matter entering the box 1. After the hot air in the box 1 is discharged from the ventilation holes 10 above the box 1, it will flow along the curved surface of the guide plate 15 to avoid heat accumulation above the box 1.

[0046] In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0047] 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 scope of protection of the present invention.

[0048] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] In the description of this specification, the reference terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A residential user electric meter box with a leakage alarm function, characterized by: The invention comprises a box (1), wherein a support frame (2) is provided inside the box (1), a mounting plate (3) is bolted to the support frame (2), a zero-sequence current transformer (4), a single-chip microcomputer (5) and a wireless communication module (6) are provided on the mounting plate (3), a buzzer (7) is fixedly installed on the outside of the box (1), a cabinet door (8) is hingedly connected to the box (1), an alarm light (9) is fixedly installed on the cabinet door (8), and the single-chip microcomputer (5) is electrically connected to the zero-sequence current transformer (4), the wireless communication module (6), the buzzer (7) and the alarm light (9) respectively.

2. A residential electricity meter box with a leakage alarm function as claimed in claim 1, characterized in that: The box body (1) is provided with a ventilation hole (10), one end of the ventilation hole (10) is provided with an adjustment component (11), the adjustment component (11) is connected to a trigger component (12), and the other end of the ventilation hole (10) is provided with a shield component (13).

3. A residential electricity meter box with a leakage alarm function as claimed in claim 2, characterized in that: The adjustment assembly (11) comprises a mounting ring (1101), the mounting ring (1101) being fixedly connected to the box body (1) and being located at one end of the ventilation hole (10), the mounting ring (1101) being provided with a guide frame (1102), the guide frame (1102) being provided with a guide groove (1103), the guide groove (1103) being slidably connected to an adjustment plate (1104), the two adjustment plates (1104) being fixedly connected to a guide rod (1105), the mounting ring (1101) being rotatably connected to a rotating disk (1106), the rotating disk (1106) being provided with a through hole (1107) and a guide groove (1108), and the guide rod (1105) being located in the guide groove (1108).

4. A residential electricity meter box with a leakage alarm function as claimed in claim 3, characterized in that: The mounting ring (1101) and the guide frame (1102) are integrally formed, the guide groove (1108) is an arc-shaped groove, and the diameters of the through hole (1107) and the ventilation hole (10) are equal.

5. A residential electricity meter box with a leakage alarm function as claimed in claim 4, characterized in that: An auxiliary groove (1109) is provided on one side of the mounting ring (1101) close to the rotating disk (1106), and an auxiliary foot (1110) is connected to one end of the rotating disk (1106) close to the mounting ring (1101), and the auxiliary foot (1110) is slidably connected to the auxiliary groove (1109).

6. A residential electricity meter box with a leakage alarm function as claimed in claim 5, characterized in that: The trigger assembly (12) comprises a bimetallic strip (1201), wherein the bimetallic strip (1201) is fixedly connected to a first mounting seat (1202), wherein the first mounting seat (1202) is fixedly connected to the housing (1), wherein the housing (1) is fixedly mounted with a second mounting seat (1203), wherein the second mounting seat (1203) is fixedly connected to a spring (1204), wherein the spring (1204) is fixedly connected to a trigger rod (1205), wherein the trigger rod (1205) is fixedly connected to a rotating disk (1106), and wherein the bimetallic strip (1201) and the trigger rod (1205) are in contact with each other.

7. A residential electricity meter box with a leakage alarm function as claimed in claim 6, characterized in that: The shield assembly (13) includes a protective mesh cover (1301), the protective mesh cover (1301) is fixedly connected to the box body (1) and is located at the other end of the ventilation hole (10), the protective mesh cover (1301) is fixedly connected to a steel wire rope (1302), and the two steel wire ropes (1302) are respectively fixedly connected to the adjustment plate (1104).

8. A residential electricity meter box with a leakage alarm function as claimed in claim 7, characterized in that: The number of the adjustment assembly (11), the trigger assembly (12), and the mask assembly (13) matches the number of the ventilation holes (10), and the mounting ring (1101), the through hole (1107), and the ventilation holes (10) are coaxially arranged.

9. A residential electricity meter box with a leakage alarm function as claimed in claim 8, characterized in that: A shielding top (14) is fixedly mounted on the upper surface of the box body (1), and a guide plate (15) is fixedly mounted on the shielding top (14).

10. A residential electricity meter box with a leakage alarm function as claimed in claim 9, characterized in that: The cabinet door (8) is provided with an observation window (16), and the box body (1) is provided with a mounting opening (17).