Single-phase multi-metering-place non-metal low-voltage metering box

Abstract

The application belongs to the technical field of low-voltage metering boxes, and particularly relates to a single-phase multi-meter-position non-metal low-voltage metering box, which comprises a box body and further comprises: a mounting strip arranged in the box body and provided with a supporting long groove; a wire arranging groove arranged in the box body and located directly below the mounting strip; a guide rail square frame arranged on the side of the wire arranging groove close to the mounting strip; a plurality of meter body supporting members movably arranged between the guide rail square frame and the mounting strip; the two ends of the supporting long strip are respectively arranged in the guide long groove and the locking sliding groove, the end of the supporting long strip extending into the locking sliding groove is provided with a locking block, the end of the supporting long strip extending into the sliding guide groove is provided with a threaded block, and the locking block and the threaded block are both provided with screw thread holes matched with screws; the number of electric energy meters in the metering box can be increased or reduced according to needs, so that the universality of the low-voltage metering box is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of low-pressure metering boxes, and in particular relates to a single-phase multi-position non-metallic low-pressure metering box. Background Technology

[0002] A single-phase multi-meter non-metallic low-voltage metering box is a professional power distribution device used in 220V low-voltage single-phase power distribution systems. It is made of non-metallic insulating materials and has four or more independent energy meter installation positions. It can centrally realize multi-user / multi-circuit energy metering, power safety protection and operation and maintenance management. The box body is made of insulating material and all metal parts are corrosion resistant. The wires connecting the energy meters are made of polyvinyl chloride insulated wires. While existing metering boxes can accommodate multiple independent energy meters, they cannot increase the number of internal meter mounting positions as needed. Therefore, when it is necessary to increase the number of energy meters in the metering box according to the site environment, it is usually necessary to replace it with a larger metering box. However, the replaced large-capacity metering box may not be suitable for the site environment, ultimately resulting in the existing metering box being unable to expand the number of energy meter positions according to the site environment. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a single-phase multi-position non-metallic low-voltage metering box, comprising a box body, a box cover placed on the box body, and a plastic-cased circuit breaker, a miniature circuit breaker, a metering box junction box, an energy meter, and an energy meter connector placed inside the box body; further comprising: a mounting strip placed inside the box body, and having a support groove on the mounting strip; a cable tray placed inside the box body, located directly below the mounting strip; a guide rail frame placed on the side of the cable tray near the mounting strip; and meter body supports, with several sets of meter body supports movably positioned between the guide rail frame and the mounting strip; The supporting long groove has a sliding guide groove on the side wall near the guide rail frame, and a guide long groove is formed on the wall perpendicular to the sliding guide groove; the guide rail frame has a locking groove on the side wall corresponding to the sliding guide groove. The watch body support includes a support strip, a locking block, and a threaded block; the two ends of the support strip are respectively placed in the guide groove and the locking groove, the end of the support strip extending into the locking groove is provided with a locking block, and the end of the support strip extending into the sliding guide groove is provided with a threaded block, and both the locking block and the threaded block are provided with threaded holes that cooperate with screws.

[0004] Preferably, the bottom of the locking groove is formed with a serrated groove, and the bottom surface of the support strip near the serrated groove is hidden from the groove, and the hidden groove extends through into the threaded hole of the locking block; a ring plate is movably disposed in the threaded hole of the locking block, and a locking strip connected to the ring plate is movably disposed in the hidden groove, and a serrated block that mates with the serrated groove is formed on the locking strip; and a spring is connected between the locking strip and the groove wall of the hidden groove.

[0005] Preferably, the side wall of the cable tray near the guide rail frame is open, and a long strip groove is formed on the bottom wall of the cable tray near the open. The end of the support strip near the locking block extends into the long strip groove. A vertical block connected to the extended ends of the two support strips is movably arranged in the long strip groove, and the two vertical blocks are connected by a spring. A flexible tube is sleeved on the outside of the spring, and several elastic clips are installed on the flexible tube at equal intervals. Two adjacent elastic clips are used to fix the wires connected to the electricity meter.

[0006] Preferably, each of the elastic clips has a steel wire strip at its top, and the steel wire strip is wrapped with an insulating layer.

[0007] Preferably, several of the support strips are suspended in the box, and a thermally conductive silicone pad is provided between two adjacent support strips, and the thermally conductive silicone pad is in contact with the installed electricity meter; a louver is installed on one side wall of the box, and an axial flow fan is installed on the other side wall of the box; the louver and the axial flow fan are on the same horizontal line, and both are located between the mounting strip and the guide rail frame.

[0008] Preferably, the support strip has several grooves, and connecting pieces are movably embedded in the grooves. The connecting pieces are connected to the thermally conductive silicone pad, and an elastic element is connected between the connecting pieces and the bottom of the grooves, so that in the initial state, the outer surface of the thermally conductive silicone pad is higher than the outer plane of the support strip.

[0009] Preferably, the back of the thermally conductive silicone pad that is not in contact with the energy meter is provided with multiple wavy thermally conductive silicone strips, and the wavy lines of the wavy thermally conductive silicone strips are perpendicular to the supporting strips. When the electricity meter is installed on the support strip, the wavy thermally conductive silicone strip contacts the box wall.

[0010] Preferably, the enclosure is integrally pressed from insulating material, and waterproof connectors are installed in the inlet and outlet holes on the enclosure.

[0011] The present invention has the following beneficial effects: This solution cleverly incorporates guide rail frames and mounting strips within the enclosure, while several sets of meter support components can slide along the guide rail frames in a straight line. This allows for easy adjustment of the position and distance of the meter support components based on the required number and size of the electricity meters to be installed. Compared to existing methods that use fixed mounting blocks inside the metering box, this solution allows for the addition or removal of the number of electricity meters within the box as needed, thereby increasing the versatility of the low-voltage metering box. Unused meter support components can be concealed within the box, ensuring they do not interfere with the normal installation and use of other electricity meters.

[0012] This ingenious design features a movable locking strip and a serrated groove at the connection between the locking block and the support strip. This allows the locking block to not only securely support the electricity meter connected by screws, but also for the screws to push the serrated block on the inner side of the locking strip into the serrated groove. This locks the locking block along the length of the guide rail frame, preventing the electricity meter from sliding freely inside the box after installation.

[0013] This solution cleverly incorporates vertical blocks and several elastic clips between two supporting strips. The combination of the two vertical blocks and the elastic clips acts as a "wire clamping groove" for the wires connected to the electricity meter, and also slides synchronously with the supporting strips. This prevents the need to disassemble the electricity meter's wires before adjusting the distance after installation. This not only affects the efficiency of distance adjustment after installation but also causes the adjusted electricity meter to not accurately match the disassembled wire ends, thus affecting the safety of subsequent use of the electricity meter.

[0014] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. 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 creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the box according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the installation structure of multiple energy meters according to an embodiment of the present invention; Figure 4This is a schematic diagram of the back structure of the thermally conductive silicone pad according to an embodiment of the present invention; Figure 5 This is an exploded view of the assembly of the thermally conductive silicone pad and the support strip according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the cable tray structure according to an embodiment of the present invention; Figure 7 This is a cross-sectional view of the locking block according to an embodiment of the present invention.

[0017] In the diagram: 1. Box body; 2. Box lid; 3. Electricity meter; 4. Mounting strip; 41. Support groove; 42. Sliding guide groove; 43. Guide groove; 5. Cable tray; 51. Strip-shaped long channel; 52. Vertical block; 53. Flexible hose; 54. Elastic retaining strip; 55. Steel wire strip; 6. Guide rail frame; 61. Locking groove; 62. Serrated groove; 7. Watch body support component; 71. Support strip; 711. Concealed groove; 712. Groove hole; 72. Locking block; 73. Threaded block; 74. Ring piece; 75. Engaging strip; 76. Serrated block; 8. Thermally conductive silicone pad; 81. Connecting piece; 82. Thermally conductive silicone strip; 9. Venetian blinds. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0020] Please see Figures 1-7As shown, the present invention is a single-phase multi-position non-metallic low-voltage metering box, including a box body 1, a box cover 2 placed on the box body 1, and a plastic-cased circuit breaker, a miniature circuit breaker, a metering box junction box, an energy meter 3, and an energy meter 3 connector placed inside the box body 1; it also includes: a mounting strip 4 placed inside the box body 1, and the mounting strip 4 has a support groove 41; a cable tray 5 placed inside the box body 1 and located directly below the mounting strip 4; a guide rail frame 6 placed on the side of the cable tray 5 near the mounting strip 4; and meter body support members 7, with several sets of meter body support members 7 movably placed between the guide rail frame 6 and the mounting strip 4; The support groove 41 has a sliding guide groove 42 on the side wall near the guide rail frame 6, and a guide groove 43 is formed on the wall perpendicular to the sliding guide groove 42; the guide rail frame 6 has a locking groove 61 on the side wall corresponding to the sliding guide groove 42; the watch body support 7 includes a support strip 71, a locking block 72, and a threaded block 73; the two ends of the support strip 71 are respectively placed in the guide groove 43 and the locking groove 61, the end of the support strip 71 extending into the locking groove 61 is provided with a locking block 72 flush with the front side of the guide rail frame 6, and the end of the support strip 71 extending into the sliding guide groove 42 is provided with a threaded block 73 flush with the side wall of the guide groove 43, and both the locking block 72 and the threaded block 73 are provided with threaded holes for screws; It should be noted that the enclosure 1 is made of insulating material and is divided into two parts, left and right. The left part is equipped with the incoming and outgoing circuit breakers, and the right part is equipped with the energy meter 3 and outgoing circuit breakers. When the enclosure cover 2 is closed, all electrical components are enclosed in the enclosure 1. Waterproof connectors are installed in the inlet and outlet holes. The enclosure protection level is IP44 and the operating surface protection level is IP20C. When it is necessary to install the electricity meter 3 in a designated position inside the housing 1, the distance between two adjacent support strips 71 and their positions on the mounting strip 4 and guide rail frame 6 need to be adjusted according to the size and quantity of the electricity meter 3 to be installed. For example, to install the electricity meter 3 on the support strip 71 on the mounting strip 4 and guide rail frame 6 located in the upper part of the housing 1, it is necessary to slide the two adjacent support strips 71 near the side wall of the housing 1 along the length of the guide rail frame 6. At this time, the locking block 72 and the threaded block 73 located in the guide groove 43 and the locking groove 61 will slide synchronously. After the two adjacent support strips 71 have slid to the appropriate position, the operator will then... The mounting holes on the energy meter 3 are aligned with the threaded holes on the locking block 72 and the threaded block 73. Then, the energy meter 3 is installed onto the support strip 71 that connects the guide rail frame 6 and the mounting strip 4 using screws. The support strip 71 can fit against the back of the energy meter 3 to provide suspended support for the energy meter 3, thereby improving the heat dissipation effect of the energy meter 3 after installation in the housing 1. Then, the other two sets of adjacent support strips 71 are moved to slide along the length of the guide rail frame 6. The distance between the support strips 71 with the energy meter 3 fixed and the support strips 71 without the energy meter 3 fixed is adjusted according to the number of energy meters 3 installed, so that multiple energy meters 3 can be reasonably installed in the housing 1. The two unused adjacent support strips 71 will be located inside the housing 1 on one side. When it is necessary to add an energy meter 3 between the upper guide rail frame 6 and the mounting strip 4, the housing cover 2 must be opened in a safe state with the power off. Without disassembling the wires on the energy meter 3, the screws on the locking block 72 should be loosened, and then the energy meter 3 should be moved to slide along the length of the guide rail frame 6. (Since the screws connecting the energy meter 3 and the threaded block 73 are only loosened, not completely disengaged from the threaded block 73), it is easier to adjust the distance between the two energy meters 3 after installation, as well as the energy meter... 3. Position the guide rail frame 6 so that there is space to install the energy meter 3 near the unused support strip 71. Then, the operator adjusts the distance between the two unused support strips 71 and installs the new energy meter 3 onto the corresponding locking block 72 and threaded block 73 on the two support strips 71. If it is necessary to reduce the number of energy meters 3, simply remove the screws on the corresponding energy meter 3 and disconnect the wires on the energy meter 3. The unused energy meters 3 can then be removed from the box 1, which makes it easy to increase or decrease the number of energy meters 3 in the low-voltage metering box. This solution cleverly installs a guide rail frame 6 and mounting strip 4 inside the housing 1, while several sets of meter body support components 7 can slide along the guide rail frame 6 in a straight line. This allows for adjustment of the position and distance of the meter body support components 7 according to the number and size of the electricity meters 3 to be installed. Compared with the existing method of installing electricity meters 3 by setting fixed mounting blocks inside the metering box, this solution allows for the increase or decrease of the number of electricity meters 3 inside the metering box as needed. Unused meter body support components 7 can be hidden inside the housing 1 so as not to interfere with the normal installation and use of other electricity meters 3.

[0021] In a preferred embodiment of the present invention, the bottom of the locking groove 61 is formed with a serrated groove 62, and the bottom surface of the supporting strip 71 near the serrated groove 62 is concealed with a groove 711, which extends through into the threaded hole of the locking block 72; a ring piece 74 is movably disposed in the threaded hole of the locking block 72, and a locking strip 75 connected to the ring piece 74 is movably disposed in the concealed groove 711, and a serrated block 76 that mates with the serrated groove 62 is formed on the locking strip 75; and a spring is connected between the locking strip 75 and the groove wall of the concealed groove 711. It should be noted that since the electricity meter 3 is only connected to the locking block 72 and the threaded block 73 by screws, and the locking block 72 can slide freely in the locking groove 61, in order to prevent the electricity meter 3 from sliding freely in the box 1 after installation, and to allow for quick adjustment of the distance between the electricity meters 3; Therefore, this embodiment specifically discloses that when the screw fixing the energy meter 3 is continuously screwed into the threaded hole of the locking block 72, the head of the screw will press the ring 74, causing it to slide towards the bottom of the threaded hole. The sliding ring 74 will then drive the locking strip 75 to slide towards the serrated groove 62, and the connected spring will be stretched. Therefore, the sliding locking strip 75 will drive the serrated block 76 to engage in the serrated groove 62, thereby fixing the support strip 71 on which the energy meter 3 is installed, preventing the adjusted support strip 71 from freely sliding on the guide rail frame 6, which would affect the shaking of the installed energy meter 3. Since the guide groove 43 and the sliding guide groove 42 are connected in a vertical state, the support strip 71 and the threaded block 73 will also be in a vertical state. Since the electricity meter 3 is in a vertical state inside the box 1 after installation, the cooperation between the threaded block 73 and the guide groove 43 can provide gravity support for the vertically installed electricity meter 3. Therefore, this solution cleverly sets a movable locking strip 75 and a serrated groove 62 only at the connection between the locking block 72 and the support strip 71. This allows the locking block 72 to not only fix and support the electricity meter 3 connected by screws, but also the screws can push the serrated block 76 on the inner side of the locking strip 75 into the serrated groove 62. This can lock the locking block 72 along the length of the guide rail frame 6 and prevent the electricity meter 3 from sliding freely inside the box 1 after installation. Conversely, when adjusting the distance between the energy meters 3, it is only necessary to loosen the screws on the locking block 72 (but the screws do not need to be completely removed from the locking block 72) to release it from the squeezing and pushing of the ring plate 74. The locking strip 75 will slide into the hidden slide groove 711 under the elastic recovery of the spring. At this time, the serrated block 76 will disengage from the serrated groove 62. Since the screws are still threadedly connected to the locking block 72, and the threaded block 73 located above only provides gravity support for the installed energy meters 3, it is only necessary to loosen the screws on both sides below the energy meters 3 to push the energy meters 3 to slide along the length of the guide rail frame 6, thereby facilitating the quick adjustment of the distance between the two energy meters 3 and making it easy to increase or decrease the number of energy meters 3 in the box 1.

[0022] In a preferred embodiment of the present invention, the side wall of the cable tray 5 near the guide rail frame 6 is open, and a strip-shaped groove 51 is formed on the bottom wall of the cable tray 5 near the open. The end of the support strip 71 near the locking block 72 extends into the strip-shaped groove 51. A vertical block 52 connected to the extended ends of the two support strips 71 is movably arranged in the strip-shaped groove 51, and the two vertical blocks 52 are connected by a spring. A flexible hose 53 is sleeved on the outside of the spring, and several elastic clips 54 are installed equidistantly on the flexible hose 53. Two adjacent elastic clips 54 are used to fix the wires connected to the electricity meter 3. Each of the elastic clips 54 is provided with a steel wire 55 at its top, and the steel wire 55 is wrapped with an insulating layer; It should be noted that, in order to prevent the wires on the installed electricity meter 3 from being disconnected before the distance adjustment is performed, it is necessary to disconnect the wires on the electricity meter 3. This will not only affect the efficiency of the distance adjustment of the installed electricity meter 3, but also cause the adjusted electricity meter 3 and the disconnected wire ends to not be accurately matched, which will affect the safety of the electricity meter 3 in subsequent use. Therefore, this embodiment specifically discloses that when it is necessary to move the positions of two adjacent support strips 71 on the guide rail frame 6, one of the support strips 71 can be moved directly, and the other support strip 71 will move synchronously (since the two support strips 71 are connected by a spring between the two upright blocks 52). Therefore, when the two support strips 71 slide synchronously, they will drive the multiple elastic clips 54 installed between the two upright blocks 52 through the hose 53 to move synchronously. When the energy meter 3 is fixed on the two adjusted support strips 71, the inner wires in the wiring groove 5 will be connected to the terminals of the energy meter 3 in sequence. The wires after connection will be synchronously inserted between the two adjacent elastic clips 54, thereby fixing the wires connected to the energy meter 3 in the wiring groove 5. The cooperation of the two upright blocks 52 and the multiple elastic clips 54 can act as a "wire clamping groove" for the wires connected to the energy meter 3. When the screws on the two adjacent locking blocks 72 loosen, the position of the installed electricity meter 3 needs to be adjusted. At this time, the moving electricity meter 3 will drive the two support strips 71 to move synchronously. Meanwhile, the two upright blocks 52 will drive several elastic clips 54 to move synchronously through the spring and hose 53, so that the "wire clamping groove" can move synchronously with the electricity meter 3. Compared with the existing method of opening several wire holes in the cable tray 5, the synchronously movable "wire clamping groove" of this solution can not only fix the connected wires, but also adjust synchronously with the position of the electricity meter 3 (since there are some wires left in the cable tray 5). It is not only necessary to remove the wires from the electricity meter 3 before adjusting the position of the installed electricity meter 3, but also will not cause the wires connected to the adjusted electricity meter 3 to deform or become tangled. When it is necessary to adjust the distance between two adjacent support strips 71 to match different widths of the electricity meter 3, if the distance between the two adjacent support strips 71 decreases, the distance between the multiple elastic clips 54 on the flexible hose 53 will decrease. When the electricity meter 3 is connected to the wire after installation, the wire is pressed between the two elastic clips 54, causing the two elastic clips 54 to expand outward, thus facilitating the clamping and fixing of the connected wire. If the distance between the two adjacent support strips 71 increases, the distance between the multiple elastic clips 54 on the flexible hose 53 will increase. If the connected wire is pressed between two adjacent elastic clips 54, the elastic clips 54 may not be able to clamp and fix the wire. Therefore, the operator can twist and wrap the steel wires 55 on the two elastic clips 54. This will not only seal the gap between the two elastic clips 54, but also pull the two elastic clips 54 closer to each other, so that the two elastic clips 54 can continue to clamp and fix the wire, preventing the connected wire from shaking between the formed "wire clamping groove", which would affect the firmness of the connection between the electricity meter 3 and the wire.

[0023] In a preferred embodiment of the present invention, several of the supporting strips 71 are suspended in the housing 1, and a thermally conductive silicone pad 8 is provided between two adjacent supporting strips 71, and the thermally conductive silicone pad 8 is in contact with the installed electricity meter 3; a louver 9 is installed on one side wall of the housing 1, and an axial flow fan is installed on the other side wall of the housing 1; the louver 9 and the axial flow fan are on the same horizontal line, and both are located between the mounting strip 4 and the guide rail frame 6; It should be noted that when multiple electricity meters 3 inside the box 1 are fully loaded, taking 6 electricity meters 3 as an example, when running at full load (40A), the temperature inside the box will reach ≥60℃. Therefore, if the heat dissipation inside the box 1 is not carried out in time, there will be a significant safety hazard. The existing methods for heat dissipation inside the box 1 are mostly to open heat dissipation holes on the box wall and then install cooling fans for heat dissipation, but they cannot specifically carry out back-type heat dissipation for the electricity meters 3, which will affect the efficiency of heat dissipation inside the box 1. Therefore, this embodiment specifically discloses that the installed energy meter 3 is suspended and supported by two support strips 71 on its back, so that it is in a non-contact state with the inner wall of the box 1. A louver 9 is installed on the right side wall of the box 1, and a small axial flow fan (taking a 12V small axial flow fan, power 2W, speed 2000rpm as an example) is installed at the aligned position on the left side wall. When the temperature and humidity sensor inside the box 1 detects that the internal temperature is ≥60℃, the axial flow fan starts, drawing external airflow into the box 1 through the louver 9; because the drawn-in airflow is supported by the mounting strips 4 and... The airflow flows within the "airflow channel" between the guide rail frames 6, and the energy meter 3 is suspended in the "airflow channel" by the support strip 71, rather than being in contact with the inner wall of the housing 1. Therefore, the airflow in the "airflow channel" will dissipate the heat generated by the energy meter 3 through the thermally conductive silicone pad 8 attached to its back. Since the primary function of the thermally conductive silicone pad 8 is to construct a thermal path between the "heat source and the heat sink", the heat generated by the operation of the device is quickly conducted to the cold airflow flowing in the "airflow channel", thereby improving the heat dissipation effect of the energy meter 3 during operation.

[0024] In a preferred embodiment of the present invention, the support strip 71 is provided with a plurality of groove holes 712, and the connecting piece 81 is movably embedded in the groove hole 712. The plurality of connecting pieces 81 are connected to the thermal conductive silicone pad 8, and an elastic element is connected between the connecting piece 81 and the bottom of the groove hole 712, so that in the initial state, the outer surface of the thermal conductive silicone pad 8 is higher than the outer plane of the support strip 71. Furthermore, even if the silicone pad itself has excellent thermal conductivity, if it is not tightly attached to the heat source / heat sink, the air remaining at the interface will create huge thermal resistance. Therefore, this embodiment specifically discloses that when the energy meter 3 is attached to the sides of the two support strips 71, the back of the energy meter 3 will first contact the thermally conductive silicone pad 8. As the screw twists in the threaded holes of the locking block 72 and the threaded block 73, the energy meter 3 will squeeze the thermally conductive silicone pad 8. At this time, the connecting piece 81 on the thermally conductive silicone pad 8 will move in the groove hole 712, and the elastic element of the spring structure will be squeezed. Then, when the energy meter 3 pushes and squeezes the thermally conductive silicone pad 8, the thermally conductive silicone pad 8 will undergo elastic deformation under a certain pressure, filling the micro gaps at the interface, so that the thermally conductive silicone pad 8 can be tightly attached to the back of the energy meter 3, preventing residual air at the interface between the energy meter 3 and the thermally conductive silicone pad 8 from affecting the heat dissipation effect of the thermally conductive silicone pad 8 on the energy meter 3.

[0025] In a preferred embodiment of the present invention, a plurality of wavy thermally conductive silicone strips 82 are provided on the back of the thermally conductive silicone pad 8 that is not in contact with the energy meter 3, and the wavy lines of the wavy thermally conductive silicone strips 82 are perpendicular to the support strip 71; wherein, when the energy meter 3 is installed on the support strip 71, the wavy thermally conductive silicone strips 82 are in contact with the box wall of the box body 1. It should be noted that, in order to further improve the heat dissipation effect of the electricity meter 3 during long-term use, this embodiment discloses that when the electricity meter 3 is installed on the support strip 71, the movement of the thermally conductive silicone pad 8 will drive the wavy thermally conductive silicone strip 82 to move towards the box wall of the box 1, so that the wavy thermally conductive silicone strip 82 can contact the box wall of the box 1. This allows the heat generated by the electricity meter 3 during operation to be dissipated through the airflow in the airflow channel and the contact with the thermally conductive silicone pad 8, and also through the contact between the wavy thermally conductive silicone strip 82 and the box wall, thereby further accelerating the heat dissipation effect of the electricity meter 3 during operation. Since the multiple wavy thermal conductive silicone strips 82 are located within the "airflow channel", the cold airflow entering the "airflow channel" will flow between two adjacent thermal conductive silicone strips 82. Since the two adjacent thermal conductive silicone strips 82 adopt a wavy structure, the flow speed of the cooling airflow on the back of the thermal conductive silicone pad 8 can be reduced, thereby further improving the effect of the cooling airflow in quickly removing heat from the thermal conductive silicone pad 8. Meanwhile, when multiple wavy thermally conductive silicone strips 82 are pressed and adhered to the wall of the housing 1, the friction between the thermally conductive silicone strips 82 and the housing wall is increased. The friction can be applied to the support strip 71 through the thermally conductive silicone pad 8, further improving the connection firmness of the support strip 71 fixed on the guide rail frame 6 by the serrated block 76 and the serrated groove 62. This not only prevents the airflow in the "airflow channel" from pushing the thermally conductive silicone strip 82, causing the support strip 71 to slide along the length of the guide rail frame 6, but also further improves the firmness and stability of the installation of the energy meter 3 in the housing 1.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A single-phase multi-position non-metallic low-voltage metering box, comprising a box body, a box cover placed on the box body, and a plastic-cased circuit breaker, a miniature circuit breaker, a metering box junction box, an energy meter, and an energy meter connector placed inside the box body; characterized in that, Also includes: An installation strip is placed inside the box, and a support groove is provided on the installation strip; The cable tray is placed inside the housing and located directly below the mounting strip; The guide rail frame is positioned on the side of the cable tray near the mounting strip; Watch body support components, several sets of the watch body support components are movably positioned between the guide rail frame and the mounting strip; The supporting long groove has a sliding guide groove on the side wall near the guide rail frame, and a guide long groove is formed on the wall perpendicular to the sliding guide groove; the guide rail frame has a locking groove on the side wall corresponding to the sliding guide groove. The watch body support includes a support strip, a locking block, and a threaded block; the two ends of the support strip are respectively placed in the guide groove and the locking groove, the end of the support strip extending into the locking groove is provided with a locking block, and the end of the support strip extending into the sliding guide groove is provided with a threaded block, and both the locking block and the threaded block are provided with threaded holes that cooperate with screws.

2. The single-phase multi-position non-metallic low-pressure metering box according to claim 1, characterized in that, The bottom of the locking groove is formed with a serrated groove, and the bottom surface of the support strip near the serrated groove has a hidden groove, which extends through into the threaded hole of the locking block. A ring plate is movably disposed in the threaded hole of the locking block, and a locking strip connected to the ring plate is movably disposed in the hidden slide groove, and a serrated block that mates with the serrated groove is formed on the locking strip. A spring is connected between the locking strip and the wall of the hidden slide.

3. The single-phase multi-position non-metallic low-pressure metering box according to claim 1, characterized in that, The side wall of the cable tray near the guide rail frame is open, and a long strip groove is provided on the bottom wall of the cable tray near the open. The end of the support strip near the locking block extends into the long strip groove. A vertical block connected to the extended ends of the two support strips is movably arranged in the long strip groove, and the two vertical blocks are connected by a spring. The spring is fitted with a flexible tube, and several elastic clips are installed at equal intervals on the flexible tube. Two adjacent elastic clips are used to fix the wires connected to the electricity meter.

4. A single-phase multi-position non-metallic low-pressure metering box according to claim 3, characterized in that, Each of the elastic clips has a steel wire strip at its top, and the steel wire strip is wrapped with an insulating layer.

5. A single-phase multi-position non-metallic low-pressure metering box according to claim 1, characterized in that, Several of the aforementioned support strips are suspended in the box, and a thermally conductive silicone pad is provided between two adjacent support strips, and the thermally conductive silicone pad is in contact with the installed electricity meter. A louver is installed on one side wall of the enclosure, while an axial fan is installed on the other side wall. The louvers and axial fan are on the same horizontal line, and both are located between the mounting strip and the guide rail frame.

6. A single-phase multi-position non-metallic low-pressure metering box according to claim 5, characterized in that, The support strip has several grooves, and connecting pieces are movably embedded in the grooves. Several connecting pieces are connected to thermally conductive silicone pads, and elastic elements are connected between the connecting pieces and the bottom of the grooves, so that in the initial state, the outer surface of the thermally conductive silicone pad is higher than the outer plane of the support strip.

7. A single-phase multi-position non-metallic low-pressure metering box according to claim 6, characterized in that, The back of the thermally conductive silicone pad that is not in contact with the energy meter is provided with multiple wavy thermally conductive silicone strips, and the wavy lines of the wavy thermally conductive silicone strips are perpendicular to the support strips. When the electricity meter is installed on the support strip, the wavy thermally conductive silicone strip contacts the box wall.

8. A single-phase multi-position non-metallic low-pressure metering box according to claim 1, characterized in that, The enclosure is integrally pressed from insulating material, and waterproof connectors are installed in the inlet and outlet holes on the enclosure.

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