Safety protection type three-phase intelligent ammeter

Abstract

The utility model provides a safety protection type three-phase intelligent ammeter, which belongs to the technical field of electric energy metering and comprises a separated shell, an external protection cover is fixedly mounted at the bottom of the separated shell, and a switch recording button is fixedly mounted in an inner cavity of the separated shell. According to the utility model, through a split type protection structure and a linkage trigger mechanism, illegal opening and operation tampering are effectively prevented, a multi-point supporting mechanical stabilization system is adopted, the problem of terminal deformation caused by wiring operation is thoroughly solved, and the reliability of long-term connection is ensured; a unique electromagnetic shielding design is combined with a physical isolation structure, so that the anti-interference capability to a strong magnetic field and electrical noise is remarkably improved; the design of the protective housing not only avoids the direct exposure of live parts, but also prevents the risk of foreign matter invasion, thereby greatly improving the operation stability of the ammeter, remarkably reducing the risk of electrical fire, and providing all-around guarantee for the safety of electricity utilization and the service life of equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric energy metering, and in particular relates to a safety protection type three-phase intelligent electric meter. Background Art

[0002] The three-phase smart meter is a high-precision electricity metering device based on modern Internet of Things and digital metering technology. It is mainly used for real-time monitoring, metering and management of three-phase alternating current in industrial and commercial power systems. Compared with traditional mechanical meters, it has high-precision metering, remote communication, data storage, load analysis, anti-theft and other functions, and can be seamlessly connected to smart grids and energy management systems.

[0003] Current electricity meters have certain defects in safety protection. Continuous wiring operations may cause the terminal blocks to be deformed due to stress, affecting connection reliability. The equipment is at risk of malfunctioning in a strong magnetic field or electrical noise environment. Live parts are directly exposed, increasing the hidden dangers of accidental touch and foreign object intrusion. The combined effect of these defects will cause the electricity meter to have measurement deviations, abnormal heating and other problems during long-term operation. In severe cases, it may cause electrical fire accidents, affecting electricity safety and equipment service life. Utility Model Content

[0004] The purpose of the present utility model is to provide a safety protection type three-phase intelligent electric meter, aiming to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A safety protection type three-phase intelligent electricity meter includes a detachable shell, an external protective cover is fixedly installed on the bottom of the detachable shell, a switch recording button is fixedly installed in the inner cavity of the detachable shell, a positioning piece is sleeved on the outer side of the switch recording button, a shaped locking claw is provided on the outer side of the positioning piece, a pressing shaft is provided in the inner cavity of the shaped locking claw, and an inspection cover is provided on the outer side of the detachable shell.

[0007] As a preferred solution of the present invention, a transformer installation groove is horizontally opened in the inner cavity of the separate housing, a terminal is provided at the bottom of the transformer installation groove, and a limit protection plate is mounted on the horizontal surface of the top of the terminal.

[0008] As a preferred solution of the present invention, a balancing force block is laterally installed on one side of the limit protection plate, and a protruding buckle for positioning the limit protection plate is fixedly installed on the outer side of the balancing force block.

[0009] As a preferred solution of the present invention, the inner cavity of the separable shell is fixedly installed with a fixing screw hole, and the inner wall of the separable shell is provided with a limited elastic fixing groove.

[0010] As a preferred solution of the present invention, a magnetic shield is fixedly installed in the inner cavity of the detachable shell, a fixed base is fixedly installed on the outer side of the detachable shell, and a display panel is fixedly connected to the outer side of the fixed base via elastic buckles.

[0011] As a preferred solution of the present invention, the inner cavity of the detachable shell is provided with a battery box body, a replaceable battery compartment cover is movably installed on the outer side of the battery box body, and a connecting foot is fixedly installed on the bottom of the battery box body for connecting to the internal circuit board.

[0012] As a preferred solution of the present invention, the inner cavity of the separate shell is provided with a physical isolation plate, an elastic deformation arm is fixedly installed on one side of the physical isolation plate, an elastic hook is fixedly installed on the outside of the elastic deformation arm, and a fixed raised strip is fixedly installed on the other side of the physical isolation plate, and is evenly used for quick clamping of the physical isolation plate. The inner cavity of the separate shell and the side close to the transformer mounting slot are set as a weak current zone, and the side away from the weak current zone is a strong current zone.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: through the split protection structure and the linkage trigger mechanism, it effectively prevents illegal opening and operation tampering, and adopts a multi-point supported mechanical stabilization system to completely solve the problem of terminal deformation caused by wiring operation, ensuring the reliability of long-term connection; the unique electromagnetic shielding design combined with the physical isolation structure significantly improves the anti-interference ability against strong magnetic fields and electrical noise; the protective shell design not only avoids the direct exposure of live parts, but also prevents the risk of foreign matter intrusion, greatly improves the operating stability of the meter, and significantly reduces the risk of electrical fires, providing all-round protection for electricity safety and equipment service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a partial cross-sectional view of the separate shell structure of the utility model;

[0017] Figure 3 It is a partial cross-sectional view of the overall structure of the utility model;

[0018] Figure 4 This is a partial schematic diagram of the battery box structure of the present utility model;

[0019] Figure 5 This is a partial schematic diagram of the display panel structure of the present invention;

[0020] Figure 6 This is a schematic diagram of a partial cross-section of the overall structure of the utility model from another perspective;

[0021] Figure 7 This is a partial schematic diagram of the physical isolation board structure of the present utility model;

[0022] Figure 8 It is a partially enlarged schematic diagram of the installation position of the anti-magnetic plate structure of the present invention.

[0023] In the figure: 1. Separate shell; 2. Inspection cover; 3. External protective cover; 4. Switch recording button; 5. Positioning piece; 6. Shaped locking claw; 7. Pressing shaft; 8. Transformer mounting slot; 9. Terminal; 10. Limit protection plate; 11. Balanced force block; 12. Raised snap; 13. Fixing screw hole; 14. Limit elastic fixing slot; 15. Anti-magnetic plate; 16. Fixed bottom plate; 17. Elastic snap; 18. Display panel; 19. Battery box; 20. Replaceable battery compartment cover; 21. Connecting foot; 22. Physical isolation plate; 23. Elastic deformation arm; 24. Elastic hook; 25. Fixed raised strip; 26. Weak current area; 27. Strong current area. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Example

[0028] Reference Figures 1 to 8, is an embodiment of the present utility model, which provides a safety protection type three-phase smart electricity meter, including a separate housing 1, an external protective cover 3 is fixedly installed on the bottom of the separate housing 1, a switch recording button 4 is fixedly installed in the inner cavity of the separate housing 1, a positioning piece 5 is sleeved on the outer side of the switch recording button 4, a plastic locking claw 6 is provided on the outer side of the positioning piece 5, a pressing shaft 7 is provided in the inner cavity of the plastic locking claw 6, and an inspection cover 2 is provided on the outer side of the separate housing 1.

[0029] Among them, the combined structure of the detachable shell 1 and the external protective cover 3 improves the maintenance convenience while ensuring protection. The switch recording button 4 is precisely positioned by the positioning piece 5, and the shaped locking claw 6 and the pressing shaft 7 constitute a sensitive triggering mechanism. When the external protective cover 3 is opened abnormally, the recording device can be triggered immediately to effectively prevent human damage or tampering. It not only realizes physical protection, but also establishes an operation recording mechanism, thereby improving the safety of the meter.

[0030] Specifically, a transformer mounting groove 8 is horizontally opened in the inner cavity of the separate shell 1, a terminal 9 is provided at the bottom of the transformer mounting groove 8, a limit protection plate 10 is installed on the horizontal surface of the top of the terminal 9, a balancing force block 11 is horizontally installed on one side of the limit protection plate 10, and a raised buckle 12 for positioning the limit protection plate 10 is fixedly installed on the outer side of the balancing force block 11.

[0031] Among them, when the terminal 9 is subjected to cable tension, the limit protection plate 10, through its unique structural design, disperses the upward force to multiple force points of the separate housing 1, thereby preventing the deformation of the engineering separate housing 1 from affecting the working accuracy of the transformer. This design not only ensures the reliability of the wiring operation, but also ensures the long-term stability of the transformer. The balancing force blocks 11 arranged on both sides of the limit protection plate 10 form a multi-point support system, which can evenly disperse the stress generated during wiring. The protruding buckle 12 realizes the rapid installation and firm fixation of the limit protection plate 10, and effectively controls the deformation through multi-directional constraints, which not only meets the fastening force required for wiring, but also avoids plastic deformation caused by local stress concentration.

[0032] The core function of the limit protection plate 10 is to form precise mechanical constraints on the guide terminals through the lateral support structure. When wiring is installed, the terminals are subjected to an upward installation force. At this time, the lateral plane of the limit protection plate 10 acts as a rigid stop surface, strictly limiting the vertical displacement of the terminals within a safe range of 0.5 mm. This design is equivalent to setting a physical limit switch on the terminal movement path. When the terminal rises to the preset limit position, the limit protection plate 10 immediately provides a reverse support force, and disperses the upward mechanical stress to the overall structure of the separate shell 1 through surface contact. This mechanical limit mechanism not only ensures the necessary installation operation space, but also avoids terminal deformation or transformer magnetic circuit deviation caused by excessive displacement through hard stops, fundamentally solving the problem of measurement inaccuracy caused by installation force in traditional electricity meters.

[0033] Furthermore, a fixing screw hole 13 is fixedly installed in the inner cavity of the separable housing 1 , and a limited elastic fixing groove 14 is provided on the inner wall of the separable housing 1 .

[0034] Among them, the fixing screw hole 13 provides rigid positioning guarantee, while the limiting elastic fixing groove 14 absorbs vibration energy through elastic deformation. It is suitable for installation environments with mechanical vibration. It can not only effectively prevent the loose connection of internal components due to long-term vibration, but also alleviate the impact of impact on the circuit board during transportation or installation, significantly improving the seismic performance of the meter.

[0035] Preferably, a magnetic shielding plate 15 is fixedly mounted on the inner cavity of the separable housing 1 , a fixed base plate 16 is fixedly mounted on the outer side of the separable housing 1 , and a display panel 18 is fixedly connected to the outer side of the fixed base plate 16 via an elastic buckle 17 .

[0036] Among them, the outer surface of the anti-magnetic plate 15 is provided with evenly distributed mounting holes for installing and fixing the anti-magnetic plate 15, and locking buckles are provided on both sides. The locking buckles on both sides are clamped and installed with the slots provided corresponding to the inner wall of the separate housing 1. The anti-magnetic plate 15 can effectively shield the external magnetic field interference and ensure that the measurement accuracy is not affected. This screwless connection method not only avoids the risk of cracking of the separate housing 1, but also absorbs vibration energy through elastic deformation, thereby ensuring the reliability of the connection while improving the seismic performance.

[0037] The anti-magnetic plate 15 is made of high-magnetic permeability metal material and is specifically arranged under the relay switch to form a directional electromagnetic shielding structure. Its core function is to effectively divert the magnetic lines of force and isolate the magnetic resistance of the external interference magnetic field through the magnetic permeability characteristics of the metal material, especially providing key protection for the electromagnetic sensitive area at the bottom of the relay switch. When the external magnetic field acts on the electric meter, the anti-magnetic plate 15 establishes a low magnetic resistance path through its high magnetic permeability characteristics, and guides the magnetic lines of force of the interfering magnetic field to the inside of the shielding body to form a closed loop, thereby forming a stable magnetic shielding cavity at the bottom of the relay switch. This directional shielding design can effectively attenuate the external magnetic field strength, especially for the power frequency magnetic field and harmonic magnetic field. It has a significant isolation effect, ensuring the stability of the electromagnetic environment of the relay switch, avoiding false operation or measurement deviation caused by magnetic field interference, and greatly improving the working reliability of the electric meter in a complex electromagnetic environment.

[0038] Furthermore, a battery box body 19 is provided in the inner cavity of the detachable housing 1, a replaceable battery compartment cover 20 is movably mounted on the outer side of the battery box body 19, and a connecting pin 21 is fixedly mounted on the bottom of the battery box body 19 for connecting to the internal circuit board.

[0039] Among them, the battery box body 19 and the replaceable battery compartment cover 20 adopt a modular design, which is convenient for maintenance and replacement. The special structural design of the connecting pin 21 realizes the reliable connection between the battery compartment and the main circuit. At the same time, the floating interface design reduces the mechanical stress of the circuit caused by the plug-in operation, which not only ensures the reliability of the power supply system, but also improves the maintenance convenience and extends the overall service life.

[0040] Furthermore, the inner cavity of the separate shell 1 is provided with a physical isolation plate 22, an elastic deformation arm 23 is fixedly installed on one side of the physical isolation plate 22, an elastic hook 24 is fixedly installed on the outer side of the elastic deformation arm 23, and a fixed raised strip 25 is fixedly installed on the other side of the physical isolation plate 22, and is evenly used for quick connection of the physical isolation plate 22. The inner cavity of the separate shell 1 and the side close to the transformer mounting slot 8 are set as a weak current zone 26, and the side away from the weak current zone 26 is a strong current zone 27.

[0041] Among them, the physical isolation plate 22 is conveniently installed through the elastic deformation arm 23 and the elastic hook 24, and the fixed raised strip 25 ensures precise positioning. This design divides the interior of the separate shell 1 into a weak current area 26 and a strong current area 27, eliminating electromagnetic interference through physical isolation. The elastic fixing method can not only ensure the isolation effect, but also adapt to the thermal expansion and contraction caused by temperature changes, thereby improving safety while ensuring long-term reliability.

[0042] During use, when the power line is connected to the terminal 9, the electric energy signal is converted into a metering signal through the transformer in the transformer installation slot 8, and the stable structure composed of the limit protection plate 10 and the balance force block 11 ensures the measurement accuracy. During normal maintenance, it can be operated through the inspection cover 2. If someone illegally opens the external protective cover 3, it will trigger the protection mechanism composed of the switch recording button 4, the positioning plate 5, the plastic locking claw 6 and the pressing shaft 7 to automatically record the event; the display panel 18 is fixed to the fixed base plate 16 by the elastic buckle 17, and the power consumption data is displayed in real time. The battery box 19 provides backup power for the system through the connecting foot 21. The physical isolation plate 22 effectively isolates the high-voltage area 27 and the low-voltage area 26 to prevent electromagnetic interference from affecting the measurement accuracy.

[0043] In summary, a split design of a separate shell 1 and an external protective cover 3 is adopted, and convenient maintenance is achieved through the inspection cover 2. The linkage mechanism composed of the switch recording button 4, the positioning plate 5, the shaped locking claw 6 and the pressing shaft 7 can automatically record abnormal cover opening operations to form double protection; the transformer mounting slot 8 cooperates with the limit protection plate 10 and the balance force block 11 to form a stable mechanical support system, which effectively prevents the terminal 9 from being deformed by force, and the fixing screw hole 13 and the limit elastic fixing slot 14 form an anti-seismic structure. The battery box body 19 and the replaceable battery compartment cover 20 adopt a modular design, and the connecting foot 21 ensures stable power connection. The physical isolation plate 22 divides the separate shell 1 into a weak current area 26 and a strong current area 27 through the elastic deformation arm 23, the elastic hook 24 and the fixed protrusion strip 25 to achieve electromagnetic isolation, ensuring the long-term stable operation of the meter from multiple dimensions such as mechanical protection, electromagnetic shielding, and anti-seismic buffering.

[0044] It is important to note that the configuration and arrangement of the present application, as shown in various exemplary embodiments, are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reading this disclosure will readily appreciate that numerous modifications are possible (e.g., variations in the size, dimensions, structure, shape, and proportions of various components, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, components shown as integrally formed may be constructed from multiple parts or components, the positions of components may be inverted or otherwise altered, and the nature, number, or position of discrete components may be modified or changed. Therefore, all such modifications are intended to be encompassed within the scope of this invention. The order or sequence of any process or method steps may be altered or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover structures described herein that perform the function described, and not only structural equivalence but also equivalent structures. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0045] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0046] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A safety protection type three-phase smart electric meter, characterized by: The invention comprises a detachable shell (1), wherein an external protective cover (3) is fixedly mounted on the bottom of the detachable shell (1), a switch recording button (4) is fixedly mounted on the inner cavity of the detachable shell (1), a positioning piece (5) is sleeved on the outer side of the switch recording button (4), a shaping locking claw (6) is arranged on the outer side of the positioning piece (5), a pressing shaft (7) is arranged in the inner cavity of the shaping locking claw (6), and an inspection cover (2) is arranged on the outer side of the detachable shell (1).

2. A safety protection type three-phase smart electric meter according to claim 1, characterized in that: A transformer installation slot (8) is horizontally provided in the inner cavity of the detachable housing (1), a terminal post (9) is provided at the bottom of the transformer installation slot (8), and a limit protection plate (10) is mounted on the horizontal surface of the top of the terminal post (9).

3. The safety protection type three-phase smart electric meter according to claim 2, characterized in that: A balancing force block (11) is laterally mounted on one side of the position limiting protection plate (10), and a protruding buckle (12) for positioning the position limiting protection plate (10) is fixedly mounted on the outer side of the balancing force block (11).

4. The safety protection type three-phase intelligent electric meter according to claim 3, characterized in that: A fixing screw hole (13) is fixedly installed in the inner cavity of the detachable shell (1), and a limiting elastic fixing groove (14) is provided on the inner wall of the detachable shell (1).

5. The safety protection type three-phase smart electric meter according to claim 4, characterized in that: A magnetic shielding plate (15) is fixedly mounted on the inner cavity of the detachable housing (1), a fixed base plate (16) is fixedly mounted on the outer side of the detachable housing (1), and a display panel (18) is fixedly connected to the outer side of the fixed base plate (16) via an elastic buckle (17).

6. The safety protection type three-phase intelligent electric meter according to claim 5, characterized in that: The inner cavity of the detachable housing (1) is provided with a battery box body (19), a replaceable battery compartment cover (20) is movably mounted on the outer side of the battery box body (19), and a connecting foot (21) is fixedly mounted on the bottom of the battery box body (19) for connecting to an internal circuit board.

7. The safety protection type three-phase intelligent electric meter according to claim 2, characterized in that: The inner cavity of the separable housing (1) is provided with a physical isolation plate (22), one side of the physical isolation plate (22) is fixedly mounted with an elastic deformation arm (23), the outer side of the elastic deformation arm (23) is fixedly mounted with an elastic hook (24), the other side of the physical isolation plate (22) is fixedly mounted with a fixed protrusion strip (25), and is uniformly used for quickly clamping the physical isolation plate (22), the inner cavity of the separable housing (1) and the side close to the mutual inductor mounting slot (8) are set as a weak current zone (26), and the side away from the weak current zone (26) is a strong current zone (27).

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