Safety electric energy metering box

Abstract

The present application relates to the field of electric energy metering box, concretely is a kind of anti-electric shock safety electric energy metering box, including installation part, the inside of installation part is equipped with two groups of side installation part, the inside of two groups of side installation part is equipped with outer inspection part, the inside of two groups of side installation part is equipped with dust separation part, outer inspection plate is introduced to detection socket by internal wiring assembly, the detection node of core circuit element in box, maintenance personnel need not hand or detection tool into box, only need to insert electric testing tool into detection socket, can indirectly realize voltage, current and other parameter detection, Z-shaped inner fixed frame makes double-sided installation plate and outer box inner wall keep safe distance, cooperate with inner installation frame to isolate outer inspection plate and side installation frame, reduce electric conduction path, reduce the risk that maintenance personnel contact live shell, avoid the condition that the limb of maintenance personnel and adjacent live element are close when maintenance personnel operate meter pen to contact target node, cause electric shock accident problem.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric energy metering box, in particular to a safe electric energy metering box. BACKGROUND

[0002] The electric energy metering box is a special box for installing and protecting electric energy metering equipment, which plays a key role in the power supply system. The main function is to measure the electric energy consumed by the user, and to provide data for the electric power company to calculate the electricity bill and manage the power. The existing metering box is mostly made of metal material. These materials have strong conductivity. If the internal electrical components have a leakage, the current can easily conduct to the surface of the box. At the same time, the existing metering box is also protected by a conventional lock. During the long-term opening and closing of the door, the sealing performance of the door is reduced, so that the electric energy metering equipment is exposed through the gap of the door. On the one hand, the equipment is easily eroded by rain and dust, which accelerates the aging and affects the performance. On the other hand, it may be maliciously damaged or stolen, and the exposed live parts may cause accidental electric shock. In order to avoid electric shock of the metering box during use, a safe electric energy metering box is needed.

[0003] In a dusty working environment, high-concentration dust is suspended in the installation space of the metering box for a long time. Such dust generally has certain conductivity or hygroscopicity. During the opening and maintenance or maintenance work, due to the long inspection time of the door, the external dust is easy to enter the box through the cabinet opening and the heat dissipation hole position, so that the dust particles are embedded in the contact surface between the terminal bolt and the wire, causing the contact point to heat up, which further damages the surrounding insulation material, forming a vicious cycle of leakage. At the same time, when the maintenance personnel need to directly contact the wiring node through the test pen, multimeter pen and other tools for continuity detection or voltage measurement, when the pen contacts the target node, the hands, arms and other limb parts of the maintenance personnel are close to the adjacent live elements, which is easy to cause the condition of accidentally touching the adjacent live elements, directly causing electric shock accidents. SUMMARY

[0004] The purpose of the present application is to provide a safe electric energy metering box to solve the problems raised in the background art.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A safety electric energy metering box against electric shock, comprising a mounting part, two groups of side mounting parts are arranged in the mounting part, the side mounting part comprises a side mounting frame, a dust separation groove is arranged in the side mounting frame, a detection groove is arranged in the side mounting frame, an external detection part is arranged in the two groups of side mounting parts, the external detection part comprises an external detection plate, an inner connection end is arranged on the outer wall of the external detection plate, a detection socket is arranged on the external detection plate, a dust separation part is arranged in the two groups of side mounting parts, the dust separation part comprises an internal partition plate, a fan fixing groove is arranged at the middle position of the internal partition plate, a heat dissipation fan is fixedly connected in the fan fixing groove, an internal detection head is fixedly connected to the middle position of the heat dissipation fan.

[0006] Preferably, the mounting part comprises an external box body, hinges are arranged on the left and right outer walls of the external box body, a lead-through hole is arranged at the bottom of the external box body, side mounting openings are arranged on the left and right outer walls of the external box body, two internal fixing frames are fixedly connected to the upper and lower sides of the inner wall of the external box body, and the four internal fixing frames are Z-shaped structures.

[0007] Preferably, the front side of the external box body is rotationally connected with a closing cabinet door through a hinge, a double-sided plate is arranged in the internal part of the external box body, mounting holes are arranged on the front and rear sides of the double-sided plate, two penetrating fixed plate insertion holes are arranged on the upper and lower sides of the double-sided plate, and the four fixed plate insertion holes are fixedly inserted with corresponding internal fixing frames.

[0008] Preferably, the side mounting frame is fixedly inserted in the corresponding side mounting opening, a locking groove is arranged in the internal part of the side mounting frame, a heat dissipation through hole is connected to the dust separation groove, the dust separation groove is connected with the internal space of the external box body through the heat dissipation through hole, and an internal extension through hole is connected to the middle position of the dust separation groove.

[0009] Preferably, the front and rear sides of the detection groove are connected with wire-through holes, the detection groove is connected with the internal space of the external box body through the corresponding wire-through holes, a turnover connecting groove is arranged in the internal part of the side mounting frame, the turnover connecting groove is connected with the corresponding detection groove, a protective cover plate is rotationally connected in the internal part of the turnover connecting groove, and the protective cover plate can be fixedly inserted in the corresponding detection groove.

[0010] Preferably, the external detection plate is fixedly connected in the internal part of the detection groove, a wiring assembly is arranged in the internal part of the external detection plate, the inner connection end and the wiring assembly in the internal part of the external detection plate are electrically connected, the detection socket and the wiring assembly in the internal part of the external detection plate are electrically connected, an internal mounting frame is arranged on the inner side of the external detection plate, and the internal mounting frame is fixedly connected to the corresponding side mounting frame.

[0011] Preferably, the outer wall of the inner frame is fixedly connected with four fixing blocks, threaded grooves are formed in the end positions of the four fixing blocks, four groups of wire clamping racks are fixedly connected to the outer wall of the inner frame, the four fixing blocks are threadedly connected with tightening torsion rods through the threaded grooves, the four tightening torsion rods are provided with handles, and two wire pressing rods are rotationally connected between the four tightening torsion rods.

[0012] Preferably, the inner partition plate is fixedly inserted into the corresponding dust partition slot, two locking grooves are formed in the inner partition plate, and the fixed fan slot is connected with the corresponding dust partition slot through a circular through hole.

[0013] Preferably, the inner detection head is electrically connected with the heat dissipation fan, the inner detection head is fixedly inserted into the corresponding inner extension through hole, and a dust cover plate is fixedly inserted into the inner part of the fixed fan slot and covers the corresponding heat dissipation fan.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. The dust cover plate cooperates with the dustproof filter screen to filter dust particles, ensure that the airflow entering the box is clean, and the heat dissipation fan continuously sends clean air into the box, so that the inside of the outer box body maintains a slightly positive pressure state, which can effectively block the invasion of external dust from the weak structures such as the gap of the closed cabinet door, the bottom lead hole and the like. At the same time, the electrical linkage of the inner detection head and the heat dissipation fan realizes dynamic regulation and control of the dust concentration. When the inner detection head detects that the dust concentration in the box reaches a preset threshold, the speed of the heat dissipation fan is automatically increased to accelerate the circulation of air in the box, and the dust is discharged through the heat dissipation through holes of the dust partition slot. The sealing groove of the protective cover plate cooperates with the locking structure of the locking groove in the inner detection slot, and the detection slot can be completely closed to prevent dust from entering the detection area in a non-maintenance state, further block the dust invasion path, and avoid the problem of dust accumulation on the wiring end and the surface of the circuit element, thereby greatly reducing the risk of electric leakage accidents caused by dust conduction.

[0016] 2. The outer detection plate connects the detection nodes of the core circuit elements in the box to the detection socket through the internal wiring assembly: maintenance personnel do not need to insert their hands or detection tools into the box, but only need to insert tools such as a test pen and a multimeter into the detection socket to indirectly realize parameter detection such as voltage and current. The Z-shaped inner fixed frame keeps a safe distance between the double-sided mounting plate and the inner wall of the outer box body, so that when the outer shell of the box body accidentally leaks electricity, the circuit elements on the double-sided mounting plate cannot be directly conducted through the inner fixed frame, forming a physical isolation barrier. The inner fixed frame isolates the outer detection plate from the side mounting frame, further reduces the electric leakage conduction path, reduces the risk of maintenance personnel contacting the live shell, and avoids the problem that when the maintenance personnel operate the test pen to contact the target node, the hands, arms and other limb parts of the maintenance personnel are close to the adjacent live elements, causing the limbs to accidentally touch the adjacent live elements, directly causing electric shock accidents. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the assembled structure of the present application;

[0018] Figure 2 is a schematic diagram of the assembled structure of the present application;

[0019] Figure 3 is a schematic diagram of the assembled structure of the present application;

[0020] Figure 4 is a schematic diagram of the assembled structure of the present application;

[0021] Figure 5 is a schematic diagram of the assembled structure of the present application;

[0022] Figure 6 is a schematic diagram of the assembled structure of the present application; Figure 5 is a schematic diagram of the assembled structure of the present application;

[0023] Figure 7 is a schematic diagram of the assembled structure of the present application; Figure 5 is a schematic diagram of the assembled structure of the present application;

[0024] Figure 8 is a schematic diagram of the assembled structure of the present application;

[0025] Figure 9 is a schematic diagram of the assembled structure of the present application;

[0026] Figure 10 is a schematic diagram of the assembled structure of the present application;

[0027] Figure 11 is a schematic diagram of the assembled structure of the present application.

[0028] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0029] 1, mounting portion; 101, outer casing; 102, side mounting opening; 103, inner fixing frame; 104, closed cabinet door; 105, double-sided mounting plate; 106, mounting hole for fixing plate; 2, side mounting portion; 201, side mounting frame; 202, dustproof mounting groove; 203, inner extension through hole; 204, detection mounting groove; 205, wiring through hole; 206, reverse connection groove; 207, protective cover plate; 3, outer inspection portion; 301, outer inspection plate; 302, inner connection terminal; 303, detection socket; 304, inner mounting frame; 305, fixing block; 306, wire clamping frame; 307, tightening torsion rod; 308, wire pressing rod; 4, dustproof portion; 401, inner mounting partition plate; 402, locking groove; 403, fixed fan groove; 404, heat dissipation fan; 405, inner inspection head; 406, dustproof cover plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0031] Embodiment one: please refer to Figure 1 - Figure 11 A safe electric energy metering box against electric shock, comprising a mounting part 1, two groups of side mounting parts 2 are arranged in the mounting part 1, the side mounting part 2 comprises a side mounting frame 201, a dust isolation groove 202 is arranged in the side mounting frame 201, a detection groove 204 is arranged in the side mounting frame 201, an external detection part 3 is arranged in each of the two groups of side mounting parts 2, the external detection part 3 comprises an external detection plate 301, an inner connecting end 302 is arranged on the outer wall of the external detection plate 301, a detection socket 303 is arranged on the external detection plate 301, a dust isolation part 4 is arranged in each of the two groups of side mounting parts 2, the dust isolation part 4 comprises an internal isolation plate 401, a fan fixing groove 403 is arranged at the middle position of the internal isolation plate 401, a heat dissipation fan 404 is fixedly connected in the fan fixing groove 403, and an internal detection head 405 is fixedly connected at the middle position of the heat dissipation fan 404.

[0032] The mounting part 1 comprises an external box body 101, hinges are arranged on the left and right outer walls of the external box body 101, a lead-through hole is arranged at the bottom of the external box body 101, side mounting openings 102 are arranged on the left and right outer walls of the external box body 101, two internal fixing frames 103 are fixedly connected to the inner walls of the external box body 101 at the upper and lower positions, and the four internal fixing frames 103 are all arranged in Z-shaped structures.

[0033] A closing cabinet door 104 is rotationally connected to the front side of the external box body 101 through the hinges, a double-sided mounting plate 105 is arranged in the internal space of the external box body 101, mounting holes are arranged at the front and rear positions of the double-sided mounting plate 105, two penetrating fixing plate insertion holes 106 are arranged at the upper and lower positions of the double-sided mounting plate 105, and corresponding internal fixing frames 103 are fixedly inserted into the four fixing plate insertion holes 106.

[0034] The side mounting frame 201 is fixedly inserted into the corresponding side mounting opening 102, a locking groove is arranged in the internal space of the side mounting frame 201, a heat dissipation through hole is connected to the dust isolation groove 202, the dust isolation groove 202 is connected to the internal space of the external box body 101 through the heat dissipation through hole, and an internal extension through hole 203 is arranged at the middle position of the dust isolation groove 202.

[0035] The front and back sides of the detection groove 204 are connected with wiring through holes 205, the detection groove 204 is connected with the internal space of the outer box body 101 through the corresponding wiring through holes 205, the inside of the side-mounted frame 201 is provided with a turnover connecting groove 206, the turnover connecting groove 206 is connected with the corresponding detection groove 204, the inside of the turnover connecting groove 206 is rotatably connected with a protective cover plate 207, the protective cover plate 207 is fixedly connected on the corresponding detection groove 204, and the protective cover plate 207 is matched with the lock groove in the side-mounted frame 201.

[0036] In the embodiment, first, the outer box body 101 is fixed on the wall or support in the multi-dust environment through the bottom preset mounting hole, then four inner fixing frames 103 are respectively fixed on the upper and lower sides of the inner wall of the outer box body 101, then the four fixed plate insertion holes 106 on the upper and lower sides of the double-sided mounting plate 105 are aligned with the inner fixing frames 103, and the double-sided mounting plate 105 is pushed in along the inner fixing frames 103 and locked through bolts, subsequently, the core circuit elements such as the electric energy meter and the mutual inductor are fixed, the closed cabinet door 104 is rotatably connected with the front side of the outer box body 101 through the hinge, the two side-mounted frames 201 are respectively inserted from the side-mounted openings 102 on the left and right sides of the outer box body 101, the preliminary fixing is realized through the cooperation between the positioning bosses on the outer walls of the side-mounted frames 201 and the clamping grooves of the side-mounted openings 102, then the side-mounted frames 201 are locked through the back bolts, the seamless fit between the side-mounted frames 201 and the box body is ensured, the dust invasion from the side-mounted openings 102 is blocked, the protective cover plate 207 is rotatably connected in the turnover connecting groove 206 of the side-mounted frame 201 through the rotating shaft, and the locking is realized through the cooperation between the lock grooves in the side-mounted frame 201 and the lock cores on the cover plate, the cover plate cannot be opened in the unlocked state, the dust is prevented from entering the detection groove 204, and when the maintenance is performed, the protective cover plate 207 of the side-mounted part 2 needs to be opened first before the closed cabinet door 104 is opened, the preliminary detection is performed through the detection plug 303 inserted into the detection tool, the hand does not need to be inserted into the box, and the contact between the dust and the elements in the box when the box is opened is reduced.

[0037] Embodiment two: please refer to Figures 1-11 The outer detection plate 301 is fixedly connected in the detection groove 204, the inside of the outer detection plate 301 is provided with a wiring assembly, the inner terminal 302 is electrically connected with the wiring assembly in the inside of the outer detection plate 301, the detection plug 303 is electrically connected with the wiring assembly in the inside of the outer detection plate 301, the inside of the outer detection plate 301 is provided with an inner mounting frame 304, and the inner mounting frame 304 can be fixedly inserted in the corresponding side-mounted frame 201.

[0038] The outer wall of the inner mounting frame 304 is fixedly connected with four fixing blocks 305, the end positions of the four fixing blocks 305 are provided with threaded grooves, the outer wall of the inner mounting frame 304 is fixedly connected with four groups of wire clamping frames 306, the four fixing blocks 305 are threadedly connected with four tightening torsion rods 307 through the threaded grooves, the four tightening torsion rods 307 are provided with handles, and two wire pressing rods 308 are rotatably connected between the four tightening torsion rods 307.

[0039] In the embodiment, the outer inspection plate 301 is fixed in the detection installation groove 204 of the side installation frame 201 by bolts, ensuring that the outer inspection plate 301 has no gap with the inner wall of the detection installation groove 204; the inner installation frame 304 on the inner side of the outer inspection plate 301 needs to be fixed with the inner wall of the side installation frame 201, the wiring assembly in the outer inspection plate 301 is electrically connected with the circuit element wiring node on the double-sided installation plate 105 through the wiring through hole 205 on the front and rear sides of the detection installation groove 204, the excess cable is clamped into the cable clamp 306 for arrangement; finally, the two line pressing rods 308 are connected with the threaded groove of the fixing block 305 through the tightening torsion rod 307, the handle of the tightening torsion rod 307 is rotated, the line pressing rod 308 is pressed to avoid the loosening of the cable, after the wiring is completed, the wiring part needs to be wrapped with insulating tape to prevent dust from adhering to cause short circuit, during the maintenance process, the maintenance personnel do not need to directly contact the wiring node in the box with a pen or a tool, only need to insert the detection tool into the detection socket 303, indirectly conduct with the target node through the wiring assembly in the outer inspection plate 301 to realize the detection of voltage, current and other parameters, avoid the limbs close to the dense elements, if the leakage current is detected, the component can be directly processed, the opening and maintenance time is shortened, the inner fixed frame 103 keeps the double-sided installation plate 105 and the box body at a safe distance, prevents the box body from being accidentally electrified, avoids the hand, arm and other limb parts of the maintenance personnel close to the adjacent electrified elements when the maintenance personnel operate the meter pen to contact the target node, the situation of the limbs accidentally touching the adjacent electrified elements, directly causes the electric shock accident.

[0040] Embodiment three: please refer to Figures 1-11 The inner installation partition plate 401 is fixedly inserted in the corresponding dust separation installation groove 202, two locking grooves 402 are formed in the inner installation partition plate 401, and the fixed fan groove 403 is connected with the corresponding dust separation installation groove 202 through the circular through hole.

[0041] The inner inspection head 405 is electrically connected with the heat dissipation fan 404, the inner inspection head 405 is fixedly inserted in the corresponding inner extension through hole 203, the dust cover plate 406 is fixedly inserted in the inside of the fixed fan groove 403, and the dust cover plate 406 covers the corresponding heat dissipation fan 404

[0042] In the embodiment, the inner partition plate 401 is inserted from the top of the dustproof groove 202 of the side-mounted frame 201, and is positioned by the convex strips on both sides of the partition plate cooperating with the sliding grooves of the dustproof groove 202, ensuring that the partition plate is seamlessly attached to the dustproof groove 202. The cooling fan 404 is fixed inside the fan fixing groove 403 by bolts, ensuring that the fan air outlet is directed towards the cooling through hole of the dustproof groove 202. The detection end of the inner detector 405 is inserted into the outer box body 101 through the inner extension through hole 203, and is electrically connected to the cooling fan 404 through a wire, realizing linkage control. Finally, the dustproof cover plate 406 is fixedly inserted outside the fan fixing groove 403 to cover the cooling fan 404, preventing external dust from entering through the fan air inlet. During daily use, the cooling fan 404 transports clean air into the box after filtering the external air through the dustproof cover plate 406, so that the box maintains a slight positive pressure, blocking the invasion of dust from the box body gap. When the inner detector 405 detects that the dust concentration in the box reaches the preset threshold, the cooling fan 404 automatically increases the speed to accelerate the circulation of air in the box, and the dust is discharged through the cooling through hole of the dustproof groove 202. At the same time, the dustproof cover plate 406 can intercept external dust to prevent the dust from re-entering the box through the fan air inlet of the cooling fan 404, effectively preventing the dust from entering the box through the cabinet opening and the cooling through hole position, and embedding the dust particles into the contact surface between the bolt of the terminal and the wire, causing the contact point to heat up, further damaging the surrounding insulation material, and forming a vicious cycle of electric leakage.

[0043] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A shockproof safety electric energy metering box comprising a mounting part (1), characterized in that: The inside of the mounting part (1) is provided with two groups of side mounting parts (2), the side mounting part (2) comprises a side mounting frame (201), a dustproof mounting groove (202) is arranged in the inside of the side mounting frame (201), a detection mounting groove (204) is arranged in the inside of the side mounting frame (201), the inside of the two groups of side mounting parts (2) is provided with an external detection part (3), the external detection part (3) comprises an external detection plate (301), an inner end head (302) is arranged on the outer wall of the external detection plate (301), a detection socket (303) is arranged on the external detection plate (301), the inside of the two groups of side mounting parts (2) is provided with a dustproof part (4), the dustproof part (4) comprises an internally mounted partition plate (401), a fan fixing groove (403) is arranged at the middle position of the internally mounted partition plate (401), a heat dissipation fan (404) is fixedly connected in the inside of the fan fixing groove (403), an internal detection head (405) is fixedly connected at the middle position of the heat dissipation fan (404); The mounting part (1) comprises an external mounting box body (101), hinges are arranged on the left and right outer walls of the external mounting box body (101), a lead-through hole is arranged at the bottom of the external mounting box body (101), side mounting openings (102) are arranged on the left and right outer walls of the external mounting box body (101), two internally fixed frames (103) are fixedly connected to the inner walls of the external mounting box body (101) on the upper and lower sides, and the four internally fixed frames (103) are Z-shaped structures; The front and rear sides of the detection mounting groove (204) are connected with wire passing holes (205), the detection mounting groove (204) is connected with the internal space of the external mounting box body (101) through the corresponding wire passing holes (205), a turnover connecting groove (206) is arranged in the inside of the side mounting frame (201), the turnover connecting groove (206) is connected with the corresponding detection mounting groove (204), a protective cover plate (207) is rotatably connected in the inside of the turnover connecting groove (206), and the protective cover plate (207) can be fixedly inserted into the corresponding detection mounting groove (204); The external detection plate (301) is fixedly connected in the inside of the detection mounting groove (204), the inside of the external detection plate (301) is provided with a wiring assembly, the inner end head (302) is electrically connected with the wiring assembly in the inside of the external detection plate (301), the detection socket (303) is electrically connected with the wiring assembly in the inside of the external detection plate (301), and an internally mounted frame (304) is arranged on the inner side of the external detection plate (301); Four fixed blocks (305) are fixedly connected to the outer wall of the internally mounted frame (304), threaded grooves are arranged at the end positions of the four fixed blocks (305), four groups of wire clamping frames (306) are fixedly connected to the outer wall of the internally mounted frame (304), the four fixed blocks (305) are screw-connected with tightening torsion rods (307) through the threaded grooves, four wire pressing rods (308) are arranged between the four tightening torsion rods (307), and the four tightening torsion rods (307) are rotatably connected with the two wire pressing rods (308).

2. The electric shock prevention safety electric energy metering box according to claim 1, characterized in that: The front side of the outer box (101) is rotatably connected with a closed cabinet door (104) through a hinge, the inside of the outer box (101) is provided with a double-sided plate (105), the front and back sides of the double-sided plate (105) are respectively provided with mounting holes, the upper and lower sides of the double-sided plate (105) are respectively provided with two penetrating plate insertion holes (106), and the interiors of the four plate insertion holes (106) are respectively and fixedly inserted with corresponding inner fixed frames (103).

3. The electric shock prevention safety electric energy metering box according to claim 1, characterized in that: The side mounting frame (201) is fixedly inserted into the corresponding side mounting opening (102), the inside of the side mounting frame (201) is provided with a locking groove, the dustproof mounting groove (202) is connected with a heat dissipation through hole, the inside space of the outer box (101) is connected with the dustproof mounting groove (202) through the heat dissipation through hole, and the middle position of the dustproof mounting groove (202) is connected with an inner extension through hole (203).

4. The electric shock prevention safety electric energy metering box according to claim 1, characterized in that: The inner mounting partition plate (401) is fixedly inserted into the corresponding dustproof mounting groove (202), two locking grooves (402) are formed in the inner mounting partition plate (401), and the fixed fan groove (403) is connected with the corresponding dustproof mounting groove (202) through a circular through hole.

5. The electric shock prevention safety electric energy metering box according to claim 3, characterized in that: The inner inspection head (405) is electrically connected with the heat dissipation fan (404), the inner inspection head (405) is fixedly inserted into the corresponding inner extension through hole (203), the inside of the fixed fan groove (403) is fixedly inserted with a dustproof cover plate (406), and the dustproof cover plate (406) covers the corresponding heat dissipation fan (404).

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