DC intelligent electric energy meter

Abstract

The utility model belongs to the technical field of intelligent ammeters, and especially relates to a DC intelligent ammeter comprising a lower box body and an upper box body, one end of the lower box body and one end of the upper box body are provided with an end cover body, the end cover body is provided with an anti-falling mechanism used for wire positioning, and the anti-falling mechanism is also provided with a leak detection mechanism powered by a test mechanism. The end cover body is provided with an end cover lead sealing screw used for protecting the screw, one end face of the end cover body is provided with a terminal strip, the anti-falling mechanism comprises a positioning box body, and an insulating upper clamping block and an insulating lower clamping block are respectively connected in the positioning box body in a sliding manner. According to the direct-current intelligent electric energy meter, the guide rubber ring on the positioning box body is used for accurately guiding the fastening bolt, and the rotary connection design of the insulating upper clamping block and the fastening bolt is matched, so that inclination and dislocation caused by shielding of the shell when the bolt is tightened are avoided, and meanwhile, dual fixation is formed by using the pre-tightening force of the reset spring and the locking force of the fastening bolt; the wire is effectively prevented from loosening and falling off, and reliable contact between the wire and the terminal is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent ammeter technical field especially relates to a direct current intelligent electric energy meter. BACKGROUND

[0002] With the wide application of direct current power supply systems such as photovoltaic energy storage, direct current distribution and electric vehicle charging, as the core equipment of electric energy metering, data acquisition and remote monitoring, the application scene of direct current intelligent electric energy meter is increasingly complex, and the requirements for equipment operation stability, installation convenience and maintenance safety are continuously improved. The direct current intelligent electric energy meter usually has intelligent functions such as high-precision metering, data storage and communication transmission, can collect voltage, current, power and other parameters in direct current circuit in real time, and provides reliable data support for electric energy management, cost accounting and system optimization, and has become an indispensable key component in direct current power system.

[0003] In the installation and debugging process of the direct current intelligent electric energy meter, the reliable connection of the wiring terminal and the wire is the basis to ensure the normal operation of the equipment. At present, the industry generally adopts bolt compression type structure to realize the fixation of the wire and the wiring terminal, that is, the wire inserted into the terminal hole is fixed by tightening the bolt on the terminal. However, in actual operation, the following problems may exist:

[0004] 1) Since the shell of the direct current intelligent electric energy meter is a closed structure, the internal space of the wiring cavity is compact, and the shell will block part of the bolt of the wiring terminal, making it difficult for the operator to accurately align the bolt head when tightening the bolt, and prone to bolt misalignment, inclination and even loosening and falling off;

[0005] 2) In order to meet the needs of multi-loop metering and multi-functional expansion, the number of wiring terminals of the direct current intelligent electric energy meter is usually large. In the actual installation process, the operator needs to connect the wire to the corresponding terminal one by one and tighten the bolt. Due to the lack of intuitive visual inspection means, it is difficult to quickly confirm whether all terminals have been correctly connected to the wire. UTILITY MODEL CONTENTS

[0006] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research and, after a lot of creative labor, completed the present utility model.

[0007] Specifically, the technical problem to be solved by the present utility model is to provide a direct current intelligent electric energy meter to solve the technical problem that the operator cannot accurately align the bolt due to the blocking of the bolt of the wiring terminal by the closed shell of the current direct current intelligent electric energy meter, and the bolt is prone to misalignment, inclination and even loosening and falling off, and the number of wiring terminals is large, and there is a lack of intuitive visual inspection means to quickly confirm whether all terminals are correctly connected to the wire.

[0008] To solve the above technical problems, the utility model provides the following technical scheme:

[0009] A direct current intelligent electric energy meter, including lower box body and upper box body, one end of lower box body and upper box body is equipped with the end cover body of dismantling and installation through screw, the anti -drop mechanism for wire positioning is dismantled and installed on the end cover body, the leak detection mechanism of being powered through test mechanism is still equipped on the anti -drop mechanism;

[0010] The end cover body is equipped with the end cover lead seal screw for protecting screw, the terminal row is installed on the end face of the end cover body near the anti -drop mechanism, and the terminal hole is linearly arranged and distributed on the terminal row;

[0011] The anti -drop mechanism includes the positioning box body dismantled and installed on the end cover body, the insulation upper clamp block and insulation lower clamp block corresponding with the terminal hole on the terminal row are slidably connected in the positioning box body respectively, the insulation upper clamp block and insulation lower clamp block are correspondingly arranged, and the insulation upper clamp block and insulation lower clamp block are vertically slidably connected in the corresponding terminal hole through the fastening bolt and the power transmission rod respectively, the arc-shaped groove that is adapted to wire is formed in the insulation upper clamp block and insulation lower clamp block.

[0012] As an improved technical scheme, one end of the fastening bolt protruding the positioning box body is equipped with a nut, one end of the fastening bolt extending into the positioning box body is rotatably connected in the insulation upper clamp block, and the positioning box body is also linearly arranged and distributed with a guide rubber ring corresponding to the fastening bolt, the guide rubber ring is distributed along the axial direction of the fastening bolt and connected with the fastening bolt in interference fit.

[0013] As an improved technical scheme, the anti -drop mechanism further includes a protective sleeve linearly arranged and vertically distributed in the positioning box body, a stop ring is fixedly installed on one end of the power transmission rod extending into the protective sleeve, a reset spring is arranged in the protective sleeve and located outside the power transmission rod, and the two ends of the reset spring are respectively connected with the stop ring and the inner bottom of the protective sleeve.

[0014] As an improved technical scheme, the end cover body is also symmetrically distributed with an insulating sheet for terminal insulation, and the two ends of the terminal row are also provided with symmetrically distributed insertion edge strips, and the positioning box body is detachably installed on the terminal row through the insertion edge strips and is arranged to coincide with the terminal row.

[0015] The two ends of the positioning box body are also provided with an insertion slot adapted to the insertion edge strip, and the positioning box body is also provided with an assembly bolt hole corresponding to the bolt on the insertion edge strip.

[0016] As an improved technical scheme, the testing mechanism comprises a testing power supply and a circuit protector fixedly installed on the positioning box body, a testing switch for controlling on-off is arranged on the testing power supply, a conductive seat electrically connected between the testing power supply and the circuit protector is arranged, and the conductive seat is located below the power transmission rod.

[0017] As an improved technical scheme, the leak detection mechanism comprises leak detection lamp sources linearly arranged on the positioning box body, and each of the leak detection lamp sources extending into the positioning box body is provided with a lamp source power transmission rod corresponding to the power transmission rod.

[0018] As an improved technical scheme, the power transmission rod extending to one end outside the protective sleeve is provided with an electric connection groove matched with the conductive seat, and an avoiding groove for avoiding the lamp source power transmission rod is further arranged in the axial direction of the power transmission rod, and a power transmission metal sheet electrically connected with the lamp source power transmission rod is arranged at the top end of the avoiding groove.

[0019] As an improved technical scheme, the upper box body is provided with a battery cabin for assembling a battery, and a display button is arranged in the battery cabin, and a lower lens body is hingedly connected to the upper box body, and a lower lens lead seal cap is arranged at one end of the lower lens body close to the lower display button, and upper box lead seal caps are symmetrically arranged at the corner ends of the upper box body, and an upper lens is arranged between the upper box lead seal caps and on the upper box body.

[0020] After the above technical scheme is adopted, the beneficial effects of the utility model are as follows:

[0021] 1. The utility model discloses a positioning box body's guide rubber ring is carried out accurate orientation to fastening bolt, cooperates with the rotary connection design of insulating upper clamp block and fastening bolt, avoids the inclination misplacement of bolt when being tightened because of the shielding of shell, simultaneously utilizes the pre-tightening force of reset spring and the locking force of fastening bolt to form double fixing, effectively prevents the loosening and falling of wire, guarantees the reliable contact of wire and terminal.

[0022] 2. The utility model discloses the cooperative matching of testing mechanism and leak detection mechanism, closes testing switch after wiring is completed, and testing power supply can power leak detection mechanism, utilizes the linkage structure that power transmission rod is driven into contact with lamp source power transmission rod when wire clamp is tightened, makes corresponding leak detection lamp source light up, and lamp source remains extinguished when wiring is not connected or not in place, so that the operator can directly and quickly judge the wiring state of all terminals through the light and dark of lamp source. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor on the basis of these drawings.

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the direct current intelligent electric energy meter of the present application.

[0025] Figure 2 It is an exploded structure schematic diagram of the direct current intelligent electric energy meter of the present application.

[0026] Figure 3 It is a front structure schematic diagram of the cooperation and installation of the anti-dropping mechanism and the testing mechanism of the present application.

[0027] Figure 4 It is a back structure schematic diagram of the cooperation and installation of the anti-dropping mechanism and the testing mechanism of the present application.

[0028] Figure 5 It is a sectional structure schematic diagram of the cooperation and installation of the anti-dropping mechanism and the leakage testing mechanism of the present application.

[0029] Figure 6 It is an A part enlarged structure schematic diagram of the present application. Figure 5

[0030] Explanation of the reference signs:

[0031] 1, lower box body; 2, upper box body; 21, battery cabin; 211, display key; 22, lower lens main body; 221, lower lens lead seal cap; 23, upper box lead seal cap; 24, upper lens; 3, end cover body; 31, end cover lead seal screw; 32, terminal row; 321, insulating sheet; 322, plug-in edge strip; 4, anti-dropping mechanism; 41, positioning box body; 411, insertion groove; 4111, assembly bolt hole; 42, insulating upper clamping block; 421, fastening bolt; 422, guide rubber ring; 43, insulating lower clamping block; 431, power transmission rod; 4311, power receiving groove; 4312, avoiding groove; 4313, power transmission metal sheet; 432, blocking ring; 44, protective sleeve; 45, reset spring; 5, testing mechanism; 51, testing power supply; 511, testing switch; 52, circuit protector; 53, conductive seat; 6, leakage testing mechanism; 61, leakage testing light source; 62, light source power transmission rod. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0033] ​Embodiment 1

[0034] As Figures 1 to 6 As shown in the drawings, the embodiment provides a direct current intelligent electric energy meter, which comprises a lower box body 1 and an upper box body 2, one end of the lower box body 1 and the upper box body 2 is provided with an end cover body 3 which is detachably installed through a screw, the end cover body 3 is detachably installed with an anti-dropping mechanism 4 for wire positioning, the anti-dropping mechanism 4 is further provided with a leak detection mechanism 6 which is powered by a test mechanism 5, the end cover body 3 is provided with an end cover lead seal screw 31 for protecting the screw, an end surface of the end cover body 3 close to the anti-dropping mechanism 4 is installed with a terminal row 32, and the terminal row 32 is linearly arranged with terminal holes, the anti-dropping mechanism 4 comprises a positioning box body 41 which is detachably installed on the end cover body 3, the positioning box body 41 is respectively and slidably connected with an insulating upper clamp block 42 and an insulating lower clamp block 43 corresponding to the terminal holes on the terminal row 32, the insulating upper clamp block 42 and the insulating lower clamp block 43 are correspondingly arranged, and the insulating upper clamp block 42 and the insulating lower clamp block 43 are respectively and vertically slidably connected in the corresponding terminal holes through a fastening bolt 421 and a power transmission rod 431, the insulating upper clamp block 42 and the insulating lower clamp block 43 are both provided with an arc-shaped groove matched with the wire, the lower box body 1 and the upper box body 2 are fixedly connected through buckles or screws, and together constitute a meter body main body, which is internally used for accommodating core electrical components such as a metering chip and a communication module, the detachable design of the end cover body 3 facilitates wiring operation and later maintenance, the end cover lead seal screw 31 is lead sealed after wiring is completed, thereby preventing unauthorized disassembly and modification, the arc-shaped grooves of the insulating upper clamp block 42 and the insulating lower clamp block 43 are matched with the wire shape, and the wire is precisely positioned through upper and lower clamping, thereby avoiding wire deviation in the terminal holes, and auxiliary bolt compression is avoided to avoid misplacement.

[0035] One end of the fastening bolt 421 protruding from the positioning box body 41 is provided with a nut, one end of the fastening bolt 421 extending into the positioning box body 41 is rotatably connected in the insulating upper clamp block 42, and the positioning box body 41 is further linearly arranged with a guide rubber ring 422 corresponding to the fastening bolt 421, the guide rubber ring 422 is distributed along the axial direction of the fastening bolt 421 and is connected in interference fit with the fastening bolt 421, the nut adopts a cross slot or an internal hexagonal structure, which facilitates quick tightening with the aid of a tool and improves wiring efficiency, the rotatable connection design of the fastening bolt 421 and the insulating upper clamp block 42 ensures that only the upper clamp is vertically lifted during tightening, thereby avoiding clamp deflection, and the guide rubber ring 422 can further provide precise guidance for the fastening bolt 421 which is connected in threaded fit with the positioning box body 41, thereby avoiding bolt inclination and misplacement.

[0036] The anti-disengagement mechanism 4 further comprises a protective sleeve 44 linearly arranged and vertically distributed in the positioning box body 41, the transmission rod 431 extends into one end of the protective sleeve 44, a stop ring 432 is fixedly installed on the one end of the protective sleeve 44, a reset spring 45 is sleeved on the protective sleeve 44 and located outside the transmission rod 431, the two ends of the reset spring 45 are respectively connected with the stop ring 432 and the inner bottom of the protective sleeve 44, the protective sleeve 44 provides axial limiting for the transmission rod 431, avoids radial deviation of the transmission rod 431, guarantees stable conduction, the stop ring 432 is used for bearing the elastic force of the reset spring 45, the reset spring 45 is always in a pre-compressed state, provides upward pre-tightening force for the insulating lower clamp block 43, preliminarily clamps the wire, cooperates with the locking force of the fastening bolt 421 to realize double fixing, effectively prevents the wire from loosening and falling off, and when the wire is connected, the reset spring 45 can adapt to the diameter of the wire, and the clamping adaptability is improved.

[0037] The end cover body 3 is further provided with symmetrical insulating sheets 321 for terminal insulation, and the two ends of the terminal row 32 are further provided with symmetrical insertion edges 322, the positioning box body 41 is detachably installed on the terminal row 32 and is arranged in coincidence with the terminal row 32 through the insertion edges 322, the two ends of the positioning box body 41 are further provided with insertion grooves 411 matched with the insertion edges 322, and the positioning box body 41 is further provided with assembly bolt holes 4111 corresponding to the bolts on the insertion edges 322, the insulating sheets 321 are made of high-temperature-resistant and flame-retardant insulating material, and are used for isolating adjacent terminals to avoid short circuit accidents in the wiring process and improve electrical safety, the insertion edges 322 and the insertion grooves 411 are matched to realize quick alignment and installation of the positioning box body 41, the assembly bolt holes 4111 are locked by bolts to ensure that the positioning box body 41 is firmly attached to the terminal row 32 and avoids displacement during use, the positioning box body 41 is arranged in coincidence with the terminal row 32 to ensure that each insulating clamp block accurately corresponds to one terminal hole, improve wiring accuracy and reduce the probability of misalignment.

[0038] The testing mechanism 5 comprises a test power supply 51 and a circuit protector 52 fixedly installed on the positioning box body 41, the test power supply 51 is provided with a test switch 511 for controlling on-off, the test power supply 51 and the circuit protector 52 are electrically connected through a conductive seat 53, and the conductive seat 53 is located below the transmission rod 431, the test power supply 51 is a low-power direct-current power supply, which provides stable working voltage for the leak detection mechanism 6, the circuit protector 52 has overload and short circuit protection functions to prevent test circuit failure from damaging equipment, the test switch 511 is of a press type or a lever type structure, which is convenient for operators to quickly start the leak detection process after wiring is completed, the conductive seat 53 is made of copper alloy or other materials with excellent conductive performance and is subjected to oxidation resistance treatment to ensure reliable electrical connection with the transmission rod 431 and guarantee stable conduction of the leak detection circuit.

[0039] The leak detection mechanism 6 comprises linearly arranged leak detection light sources 61 distributed on the positioning box body 41, and each of the leak detection light sources 61 extending into one end of the positioning box body 41 is provided with a light source power supply rod 62 corresponding to the power transmission rod 431. The leak detection light source 61 adopts a high-brightness LED lamp bead, which is distributed one-to-one corresponding to the terminal hole of the terminal row 32, facilitating the operator to intuitively identify the wiring state of each terminal. The light source power supply rod 62 is a conductive metal rod, the length of which is adapted to the moving stroke of the power transmission rod 431, so as to ensure that the conductive metal sheet 4313 can be accurately contacted when the wiring is in place, and the visual judgment of whether the wiring is in place is realized through the light source on-off.

[0040] The power transmission rod 431 extending to the outside of the protective sleeve 44 is provided with an electric connection groove 4311 adapted to the conductive seat 53. The axial direction of the power transmission rod 431 is also provided with an avoidance groove 4312 for avoiding the light source power supply rod 62. The top end of the avoidance groove 4312 is provided with a conductive metal sheet 4313 electrically connected with the light source power supply rod 62. The groove type of the electric connection groove 4311 is adapted to the conductive seat 53, so as to ensure that the power transmission rod 431 is fully contacted with the conductive seat 53 after moving downward, forming a conduction loop. The avoidance groove 4312 provides installation and moving space for the light source power supply rod 62, avoiding interference between the two. When the wire clamp continuously drives the power transmission rod 431 to move downward, the conductive metal sheet 4313 is contacted with the light source power supply rod 62, so that the corresponding leak detection light source 61 is lighted. When there is no wiring, the light source is extinguished, realizing rapid leak detection.

[0041] The upper box body 2 is provided with a battery compartment 21 for assembling a battery, and the battery compartment 21 is provided with a display key 211. The upper box body 2 is also hingedly connected with a lower lens body 22. The lower lens body 22 is provided with a lower lens lead seal cap 221 at one end close to the lower display key 211. The corner end of the upper box body 2 is also symmetrically provided with upper box lead seal caps 23. The upper lens 24 is arranged between the upper box lead seal caps 23 and on the upper box body 2. The battery compartment 21 is built-in with a replaceable lithium battery, which provides a backup power supply for the electric energy meter, ensuring that the metering data is not lost when the power is off. The upper lens 24 corresponds to the display screen inside the meter body, facilitating reading of metering data such as voltage, current and electric energy, and has dustproof and anti-scratching functions, which is a conventional technical means for existing electric meters.

[0042] In the process of assembling the terminals and wires by using the device, the end cover lead seal screw 31 on the end cover body 3 is first disassembled, the end cover body 3 is opened, the anti-dropping mechanism 4 is precisely installed on the terminal row 32 by using the insertion edges 322 at both ends of the terminal row 32 to cooperate with the insertion grooves 411 of the positioning box body 41, the upper and lower insulating clamps 42 and 43 are one-to-one corresponding to the terminal holes of the terminal row 32, and the insulating sheets 321 isolate adjacent terminals to avoid the risk of short circuit of wiring.

[0043] The conductor to be connected is inserted into the corresponding terminal hole, the conductor extrudes the insulating lower clamp block 43, so that it drives the electricity transmission rod 431 to move downward along the protective sleeve 44, and compresses the reset spring 45; at this time, the nut of the fastening bolt 421 is tightened by a tool, the fastening bolt 421 rotates vertically under the accurate guidance of the guide rubber ring 422, drives the insulating upper clamp block 42 to move downward, cooperates with the arc-shaped slot of the insulating lower clamp block 43 to clamp the conductor, the pre-tightening force of the reset spring 45 and the locking force of the fastening bolt 421 form double fixation, prevent the conductor from loosening and falling off due to vibration or thermal expansion and cold contraction, at the same time, the guide rubber ring 422 avoids the fastening bolt 421 from being inclined and misaligned, and guarantees the reliable contact of the conductor and the terminal.

[0044] After the connection is completed, the test switch 511 of the test mechanism 5 is closed, the test power supply 51 supplies power to the leakage detection mechanism 6 through the conductive seat 53, if the conductor is accurately clamped, the insulating lower clamp block 43 drives the electricity transmission rod 431 to move downward to fully contact with the conductive seat 53, at the same time, the energized metal sheet 4313 in the avoidance slot 4312 contacts with the light source energized rod 62, so that the corresponding leakage detection light source 61 is lighted; if the conductor is not connected to the terminal or the connection is not in place, the electricity transmission rod 431 does not move downward to the contact position, the corresponding leakage detection light source 61 remains unlighted, the operator can directly judge whether the connection of each terminal is omitted or in place through the light and dark of the light source, and quickly complete the inspection of the connection of all terminals, and in this process, the circuit protector 52 can prevent the test circuit from being overloaded and damaged due to short circuit.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it, although the present application 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 application can be modified or replaced by equivalent, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A direct current smart electric energy meter, characterized in that: Including lower box (1) and upper box (2), one end of the lower box (1) and the upper box (2) is provided with end cover body (3) by screw dismounting installation, the end cover body (3) is dismounted and installed with anti-off mechanism (4) for wire positioning, the anti-off mechanism (4) is also provided with leak detection mechanism (6) powered by test mechanism (5); The end cover body (3) is provided with end cover lead seal screw (31) for protecting screw, one end face of the end cover body (3) is provided with terminal row (32) close to anti-off mechanism (4), and terminal holes are linearly arranged on the terminal row (32); The anti-off mechanism (4) includes positioning box (41) dismounted on the end cover body (3), the positioning box (41) is respectively connected with the insulation upper clamp block (42) and the insulation lower clamp block (43) corresponding to the terminal hole on the terminal row (32), the insulation upper clamp block (42) and the insulation lower clamp block (43) are correspondingly arranged, and the insulation upper clamp block (42) and the insulation lower clamp block (43) are respectively connected in the corresponding terminal hole through the fastening bolt (421) and the power transmission rod (431) vertical sliding, the insulation upper clamp block (42) and the insulation lower clamp block (43) are all provided with arc-shaped grooves matched with the wires.

2. The direct current smart energy meter of claim 1, wherein: One end of the fastening bolt (421) protruding from the positioning box (41) is provided with a nut, one end of the fastening bolt (421) extending into the positioning box (41) is rotatably connected in the insulation upper clamp block (42), and the positioning box (41) is also linearly arranged with a guide rubber ring (422) corresponding to the fastening bolt (421), the guide rubber ring (422) is distributed along the axial direction of the fastening bolt (421) and connected with the fastening bolt (421) in interference fit.

3. The direct current smart energy meter of claim 1, wherein: The anti-off mechanism (4) further includes a protective sleeve (44) linearly arranged and vertically distributed in the positioning box (41), one end of the power transmission rod (431) extending into the protective sleeve (44) is fixedly installed with a stop ring (432), a reset spring (45) is provided in the protective sleeve (44) and located outside the power transmission rod (431), and the two ends of the reset spring (45) are respectively connected with the stop ring (432) and the inner bottom of the protective sleeve (44).

4. The direct current smart energy meter of claim 1, wherein: The end cover body (3) is also symmetrically provided with insulation sheets (321) for terminal insulation, and the two ends of the terminal row (32) are also provided with symmetrically distributed insertion edge strips (322), and the positioning box (41) is dismounted on the terminal row (32) through the insertion edge strips (322) and is arranged coincidentally with the terminal row (32); The two ends of the positioning box (41) are also provided with insertion grooves (411) matched with the insertion edge strips (322), and the positioning box (41) is also provided with assembly bolt holes (4111) corresponding to the bolts on the insertion edge strips (322).

5. The direct current smart energy meter of claim 4, wherein: The test mechanism (5) comprises a test power supply (51) and a circuit protector (52) fixedly installed on the positioning box body (41), and the test power supply (51) is provided with a test switch (511) for controlling on-off, and the test power supply (51) and the circuit protector (52) are provided with an electrically connected conductive seat (53) therebetween, and the conductive seat (53) is located below the power transmission rod (431).

6. The direct current smart energy meter of claim 1, wherein: The leak detection mechanism (6) comprises leak detection lamp sources (61) linearly arranged on the positioning box body (41), and each of the leak detection lamp sources (61) extending into the positioning box body (41) is provided with a lamp source power transmission rod (62) corresponding to the power transmission rod (431).

7. The direct current smart energy meter of claim 3, wherein: The power transmission rod (431) extending out of the protection sleeve (44) is provided with an electric connection groove (4311) matched with the conductive seat (53), and the power transmission rod (431) is further provided with an avoidance groove (4312) for avoiding the lamp source power transmission rod (62) in the axial direction, and the avoidance groove (4312) is provided with a power transmission metal sheet (4313) electrically connected with the lamp source power transmission rod (62) at the top end.

8. The direct current smart energy meter of claim 1, wherein: The upper box body (2) is provided with a battery cabin (21) for assembling a battery, and the battery cabin (21) is provided with a display key (211), and the upper box body (2) is further hingedly connected with a lower lens body (22), and the lower lens body (22) is provided with a lower lens lead seal cap (221) at one end close to the lower display key (211), and the corner end of the upper box body (2) is further provided with upper box lead seal caps (23) symmetrically distributed, and the upper box lead seal caps (23) are provided with an upper lens (24) between and on the upper box body (2).

Images