Photovoltaic intelligent grid-connected metering box

Abstract

The utility model discloses a photovoltaic intelligent grid-connected metering box which comprises a metering box main body and an auxiliary maintenance device. According to the utility model, the intelligent circuit breaker is arranged to monitor parameters such as voltage and current behind a user side inverter and in front of a meter, functions such as remote control and automatic reclosing can be realized, and the auxiliary maintenance device is arranged, that is, under the mutual cooperation of a guide groove, a first clamping groove and a second clamping groove which are arranged in the support assembly, the intelligent circuit breaker can maintain the safety of the user side inverter. According to the metering box, the adjusting assembly is arranged, a limiting block arranged in the adjusting assembly can move forwards as a whole of the metering box body, so that the follow-up overhaul intuition and space are expanded, and the adjusting assembly is arranged, that is, a locking wheel arranged in the locking structure forms a locking state with a ball, a spring piece, a locking shaft and a spring, so that convenient adjusting and locking are achieved; and the metering box main body can be wholly inclined, so that the follow-up maintenance intuition is further improved, and the advantages of efficient and intuitive maintenance auxiliary cooperation and maintenance intuition improvement are achieved.

Description

Technical Field

[0001] The utility model relates to the field related to power supply facilities, and in particular to a photovoltaic intelligent grid-connected metering box. Background Art

[0002] In the existing technology, during the operation and maintenance of the photovoltaic intelligent grid-connected metering box, it is more difficult for operators to identify and isolate distributed power sources. Operators will not only face personal safety risks, but also need to disconnect and check the inverters one by one during the maintenance process, which will increase the power outage maintenance time. Therefore, it is necessary to explore and formulate safe and reliable access methods to comprehensively carry out grid-connected low-voltage distributed photovoltaic operation control work;

[0003] At the same time, during the maintenance of the meter box, due to the installation angle of the meter box, the interfaces of the internal electrical components are relatively hidden and difficult to observe intuitively, resulting in a cumbersome and lengthy maintenance process. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a photovoltaic intelligent grid-connected metering box.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a photovoltaic intelligent grid-connected meter box, including a meter box body, a first box door and a second box door are respectively rotatably connected on the front side of the meter box body, and an observation window is installed on the front side of the first box door, a warning sign and a nameplate are respectively provided on the front side of the second box door, and the warning sign and the nameplate are arranged opposite to each other up and down, and door lock handles are installed on the right sides of the first box door and the second box door, a top cover is integrally connected to the top of the meter box body, and a heat dissipation hole is opened on the right side of the meter box body, and also includes an auxiliary maintenance device arranged on the outside of the meter box body, the auxiliary maintenance device includes vertical bars relatively arranged on the left and right sides of the meter box body, mounting blocks fixed on both sides of the outer ends of the vertical bars, horizontal bars arranged between the mounting blocks on both sides, a support assembly fastened to the middle of the vertical bar, and an adjustment assembly connected to the inside of the support assembly and connected to the side of the meter box body.

[0006] Preferably, a metering room and a control room are respectively provided inside the main body of the meter box, the metering room and the left side of the control room are connected with a grounding wire through the door, a grounding busbar is installed on the left side of the control room, and a surge protector is relatively arranged on the right side of the grounding busbar, an intelligent circuit breaker is relatively installed on the upper end of the surge protector, and an automatic reclosing protector is relatively arranged on the right side of the intelligent circuit breaker, an isolating switch is installed on the right side of the control room, an electric meter bracket is screwed inside the metering room, and the outside of the electric meter bracket is connected to the electric meter body, and a cable hole is provided at the lower end of the control room.

[0007] Preferably, the support assembly includes a support plate fastened to the middle of the vertical bar, a guide groove opened inside the support plate, a first card slot and a second card slot integrally opened on the rear and front sides of the guide groove, and a limiting groove opened inside the guide groove, the first card slot and the second card slot.

[0008] Preferably, the adjustment assembly includes connecting blocks fastened to the left and right sides of the metering box body, a guide rod inserted into the connecting block, a slider sleeved on the outside of the guide rod, a limit block arranged on the outside of the slider, a pull rod fixed to the side of the limit block, a connecting rod inserted into the upper end of the limit block, a movable shell sleeved on the outside of the connecting rod, a compression spring placed inside the movable shell and against the upper end of the connecting rod, and a locking structure arranged inside the limit block.

[0009] Preferably, the locking structure includes a locking wheel arranged inside the limit block, a ball abutting against one side of the locking wheel, a connecting strip installed on the outside of the ball, spring sheets embedded on both sides of the outer ends of the connecting strip, a fixing block fastened to the sides of the spring sheets, a connecting tube arranged on one side inside the limit block, a spring placed inside the connecting tube, and a locking shaft inserted into the connecting tube and abutting against the outside of the spring.

[0010] Preferably, the horizontal bars are symmetrically arranged vertically and horizontally, and the horizontal bars, vertical bars and the mounting blocks form a rectangular frame.

[0011] Preferably, the limit block is slidably embedded in the guide groove, and the overall size of the limit block matches the internal size of the guide groove, the first clamping slot and the second clamping slot.

[0012] Preferably, the ball and the locking shaft are opposite to each other left and right along the inside of the limit block, and both the ball and the locking shaft are embedded in the outside of the locking wheel.

[0013] Beneficial effects of the utility model:

[0014] Advantage 1: The utility model is equipped with an intelligent circuit breaker to monitor the voltage, current and other parameters after the inverter on the user side and before the meter, and can realize functions such as remote control and automatic reclosing, and cooperate with the heat dissipation holes and the top cover to dissipate the heat inside the meter box body, thereby improving the heat dissipation effect inside the meter box body.

[0015] Advantage 2: The utility model is provided with an auxiliary maintenance device, that is, the guide groove, the first slot and the second slot provided inside the support component cooperate with each other, so that the limit block provided inside the adjustment component can realize the overall forward movement of the metering box body, thereby expanding the intuitiveness and space of subsequent maintenance.

[0016] Advantage 3: The utility model realizes convenient adjustment and locking by providing an adjustment component, that is, a locking wheel provided inside the locking structure, which forms a locking state with a ball and a spring sheet as well as a locking shaft and a spring, so that the main body of the metering box can be tilted as a whole, to further improve the intuitiveness of subsequent maintenance, thereby achieving the advantages of efficient and intuitive maintenance assistance and improving the intuitiveness of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the auxiliary maintenance device of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the support assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the adjustment component of the utility model;

[0022] Figure 6 It is a right side cross-sectional structural schematic diagram of the locking structure of the utility model.

[0023] Among them: meter box body-1, first box door-2, second box door-3, observation window-4, warning sign-5, nameplate-6, door lock handle-7, top cover-8, heat dissipation hole-9, metering room-10, control room-11, grounding wire through the door-12, grounding busbar-13, surge protector-14, intelligent circuit breaker-15, automatic reclosing protector-16, disconnector-17, meter bracket-18, meter body-19, cable hole-20, auxiliary maintenance device-21, vertical bar-211, mounting block-212, horizontal bar-213, support assembly-214, support plate -2141, guide groove -2142, first clamping groove -2143, second clamping groove -2144, limiting groove -2145, adjusting component -215, connecting block -2151, guide rod -2152, sliding block -2153, limiting block -2154, pulling rod -2155, connecting rod -2156, moving shell -2157, compression spring -2158, locking structure -21a, locking wheel -21a1, ball -21a2, connecting strip -21a3, spring sheet -21a4, fixing block -21a5, connecting tube -21a6, spring -21a7, locking shaft -21a8. DETAILED DESCRIPTION

[0024] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0025] See also Figure 1-2 The utility model provides a photovoltaic intelligent grid-connected metering box, including a metering box body 1, a first box door 2 and a second box door 3 are rotatably connected to the front side of the metering box body 1, and an observation window 4 is installed on the front side of the first box door 2, a warning sign 5 and a nameplate 6 are respectively arranged on the front side of the second box door 3, and the warning sign 5 and the nameplate 6 are arranged opposite to each other up and down, a door lock handle 7 is installed on the right side of the first box door 2 and the second box door 3, a top cover 8 is integrally connected to the top of the metering box body 1, and a heat dissipation hole 9 is opened on the right side of the metering box body 1, and a metering room 10 and a control room 11 are respectively opened in the metering box body 1, and the metering room 10 and the control room 11 are respectively opened in the metering box body 1. The left side of the control room 11 is connected to a door grounding wire 12, a grounding busbar 13 is installed on the left side of the control room 11, and a surge protector 14 is relatively arranged on the right side of the grounding busbar 13, an intelligent circuit breaker 15 is relatively installed on the upper end of the surge protector 14, and an automatic reclosing protector 16 is relatively arranged on the right side of the intelligent circuit breaker 15, an isolating switch 17 is installed on the right side of the control room 11, an electric meter bracket 18 is screwed inside the metering room 10, and the outside of the electric meter bracket 18 is connected to the electric meter body 19, a cable hole 20 is opened at the lower end of the control room 11, and also includes an auxiliary maintenance device 21 arranged on the outside of the meter box body 1.

[0026] The grounding busbar 13 is connected to the surge protector 14 through wiring, the surge protector 14 is connected to the intelligent circuit breaker 15 through wiring, and the intelligent circuit breaker 15, the automatic reclosing protector 16 and the isolating switch 17 are connected to the meter body 19 through wiring.

[0027] See also Figure 3 The auxiliary maintenance device 21 in this embodiment includes vertical bars 211 installed vertically symmetrically on the left and right sides of the meter box body 1, and corresponding mounting blocks 212 fixedly connected to the upper and lower ends of the vertical bars 211 on both sides, so that the mounting blocks 212 can be used to lock and connect with the wall or other mounting parts with bolts, and corresponding horizontal bars 213 installed between the mounting blocks 212 on both sides to realize the connection and combination use, and corresponding support components 214 fastened to the middle of the front end of the vertical bars 211 on both sides to realize the auxiliary support of the meter box body 1, and adjustment components 215 connected to the inside of the support components 214 on both sides and connected to the left and right sides of the meter box body 1, so that the meter box body 1 can be moved forward and tilted.

[0028] The horizontal bar 213 is symmetrically arranged horizontally, and the horizontal bar 213, the vertical bar 211 and the mounting block 212 form a rectangular frame, ensuring efficient combination of the horizontal bar 213, the vertical bar 211 and the mounting block 212, so as to realize the rapid formation and use of a stable rectangular frame state.

[0029] See also Figure 4The support assembly 214 in this embodiment includes a support plate 2141 that is correspondingly and longitudinally fastened to the middle part of the vertical bar 211, a guide groove 2142 that is correspondingly opened inside the support plate 2141 for moving guide cooperation, a first card slot 2143 and a second card slot 2144 that are integrally opened on the rear and front sides of the guide slot 2142, and the overall dimensions of the first card slot 2143 and the second card slot 2144 are consistent, and the first card slot 2143 and the second card slot 2144 are both opened in the shape of a lower groove, thereby realizing convenient adjustment of the lock or reset lock, and a limiting groove 2145 that is correspondingly opened inside the guide slot 2142, the first card slot 2143 and the second card slot 2144, thereby ensuring the stability of the movement and adjustment process of the metering box body 1, and also ensuring the stability in the locked state.

[0030] See also Figure 5-6 The adjusting assembly 215 in this embodiment includes a connecting block 2151 symmetrically and firmly connected to the left and right sides of the metering box body 1, a guide rod 2152 vertically inserted into the connecting blocks 2151 on both sides for vertical movement and guiding, a slider 2153 slidably sleeved on the outside of the guide rod 2152 for upward and downward movement, and a limit block 2154 firmly connected to the outside of the slider 2153. A protrusion is integrally fixed on the bottom of the limit block 2154, so that the limit block 2154 can pass through the protrusion and the guide groove 2142 provided at the bottom. The first card slot 2143 is connected to the limiting slot 2145 opened inside the second card slot 2144, and is connected to the pull rod 2155 which is fixedly connected to the side of the limiting block 2154 for pushing and pulling, and is correspondingly connected to the connecting rod 2156 which is vertically inserted into the upper ends of the limiting blocks 2154 on both sides, and a movable shell 2157 which is sleeved on the outside of the connecting rod 2156 and slidably embedded in the upper end of the support plate 2141, and a compression spring 2158 which is placed inside the movable shell 2157 and against the upper end of the connecting rod 2156, and is arranged in the locking structure 21a inside the limiting block 2154.

[0031] Specifically, the locking structure 21a includes a locking wheel 21a1 installed at the middle end of the limit block 2154, and six grooves are equidistantly opened on the outer side of the locking wheel 21a1 along the circular track, and the middle part of the locking wheel 21a1 is rotatably connected with the slider 2153, and a ball 21a2 is inserted into the groove in the middle part of the left side of the locking wheel 21a1, and a connecting strip 21a3 is vertically installed on the outer side of the ball 21a2, and a spring sheet 21a3 is symmetrically inserted into the connecting strip 21a3 to realize elastic compression and support. 1a4, a fixing block 21a5 which is fastened to the side of the spring sheet 21a4 away from the connecting strip 21a3 and connected to the inside of the limit block 2154, a connecting tube 21a6 which is installed on the right side of the limit block 2154 to realize the support and telescopic transmission cooperation, a spring 21a7 built into the connecting tube 21a6, a locking shaft 21a8 which is laterally inserted into the left side of the connecting tube 21a6 and abuts against the outside of the spring 21a7, and the left side of the locking shaft 21a8 is correspondingly embedded in the middle groove on the right side of the locking wheel 21a1.

[0032] Specifically, the limit block 2154 is slidably embedded in the guide groove 2142, and the overall size of the limit block 2154 matches the internal size of the guide groove 2142, the first card slot 2143 and the second card slot, ensuring that the limit block 2154 can achieve stable sliding adjustment cooperation along the guide groove 2142, the first card slot 2143 and the second card slot; the ball 21a2 and the lock shaft 21a8 are opposite to each other left and right along the inside of the limit block 2154, and the ball 21a2 and the lock shaft 21a8 are both embedded in the outer side of the locking wheel 21a1, ensuring that the ball 21a2 and the lock shaft 21a8 cooperate with each other to achieve stable rotation and locking of the locking wheel 21a1.

[0033] Here’s how it works:

[0034] When the photovoltaic intelligent grid-connected metering box is to be used, the door grounding wire 12, the grounding busbar 13, the surge protector 14, the intelligent circuit breaker 15, the automatic reclosing protector 16 and the isolating switch 17 can be combined by wiring to connect with the meter body 19 installed on the front side of the meter bracket 18 inside the metering room 10, so as to realize the combination of the photovoltaic intelligent grid-connected metering box, wherein the intelligent circuit breaker 15 has data collection function, leakage protection function and remote control function, so that when the line or equipment is overloaded or short-circuited, the line meter body can be 19 is used for protection, and cooperates with the door grounding wire 12, the grounding busbar 13, the surge protector 14, the automatic reclosing protector 16 and the isolating switch 17 to realize efficient protection of the line and the equipment, and the electric meter body 19 arranged inside the metering room 10 can detect the electric quantity in real time, and when the internal equipment is running, in order to avoid overheating damage, a heat dissipation hole 9 is opened on the right side of the lower end of the metering box body 1 and a top cover 8 is set on the top to assist in realizing the rapid discharge of internal heat and reduce the phenomenon of overheating damage of the equipment, so as to make the metering box body 1 realize stable metering activities as a whole;

[0035] In order to ensure that the wiring maintenance can be better and more intuitively observed during the subsequent maintenance activities of the internal equipment of the metering box body 1, an auxiliary maintenance device 21 is also provided on the outside of the metering box body 1 to realize the overall removal and tilting activities of the metering box body 1. That is, when maintenance activities are required, the limit blocks 2154 provided inside the left and right support plates 2141 can be pushed up, so that the limit blocks 2154 are pre-moved up along the second slots 2144 opened on the rear side of the guide grooves 2142 to release the locking effect. When the limit blocks 2154 move up, the connecting rod 2156 inserted into the upper end of the limit blocks 2154 will be inserted into the movable shell 2157 to squeeze the compression spring 2158 provided inside the movable shell 2157. In this way, the compression-rebound state is realized. When the limit blocks 2154 move out of the second slots 2144 and are at the upper end of the rear side of the guide grooves 2142, the metering box body 1 can be moved forward. The box body 1 as a whole makes the metering box body 1 cooperate with the moving effect of the limit block 2154 and the guide groove 2142 to realize the overall forward movement. At the same time, the convex block fixed at the bottom of the limit block 2154 will be connected with the limit groove 2145 opened in the guide groove 2142 to realize stable movement and cooperation. As a result, the metering box body 1 can move forward to move away from the wall part. When the limit block 2154 moves forward to the front end of the guide groove 2142, the compression spring 2158 in the compressed state will rebound to realize the ejection of the connecting rod 2156. In this way, the limit block 2154 will quickly move down and embed into the first card slot 2143, so as to realize the card connection and locking activity, so that the metering box body 1 can maintain a stable state after moving forward. As a result, the overall forward movement adjustment of the metering box body 1 can be completed conveniently, so that the convenience of maintenance of the metering box body 1 is improved, so as to expand the maintenance space and reduce wall obstruction.

[0036] In order to further improve the maintenance effect, the overall angle of the metering box body 1 can be tilted to increase the intuitiveness of observation. For this purpose, the metering box body 1 can be directly pushed as a whole to rotate the metering box body 1, so that the connecting blocks 2151 connected to the left and right sides of the metering box body 1 will realize the driving of the slider 2153 connected to the middle part of the outer side. In this way, as the slider 2153 rotates, the locking wheel 21a1 connected to the middle part of the outer side of the slider 2153 will rotate synchronously, and through the rotation of the locking wheel 21a1, the ball 21a2 and the lock shaft 21a8 embedded and engaged with the left and right sides of the locking wheel 21a1 will rotate with the locking wheel 21a1 to intermittently engage with the groove opened on the outer side of the locking wheel 21a1, that is, the ball 21a2 will be squeezed in advance to bend the connecting strip 21a3 and the spring sheet 21a4. , and the bent spring piece 21a4 has a rebound effect, so that when a new groove on the outer side of the locking wheel 21a1 is opposite to the ball 21a2, the bent spring piece 21a4 will rebound quickly to make the ball 21a2 embed into the new groove to achieve mutual locking, and the lock shaft 21a8 can also cooperate with the spring 21a7 to intermittently engage with the groove opened on the outer side of the locking wheel 21a1, so that the left and right sides of the locking wheel 21a1 can achieve mutual locking and locking activities, so that the locking wheel 21a1 as a whole can maintain a stable tilt adjustment locking state, thereby, the metering box body 1 as a whole can be stably tilted, so that the metering chamber 10 and the control chamber 11 inside the metering box body 1 can be observed clearly and intuitively, thereby improving the subsequent maintenance efficiency, thereby achieving the advantages of efficient and intuitive maintenance auxiliary cooperation and improving the intuitiveness of maintenance;

[0037] Secondly, during the subsequent resetting, it is only necessary to push the meter box body 1 as a whole in the direction, and pull up the limit block 2154 again to move the limit block 2154 out of the second slot 2144, and cooperate with the limit block 2154 and the guide groove 2142 to move and guide the meter box body 1 back to the wall. At the same time, the rectangular installation state composed of the vertical bar 211, the mounting block 212 and the horizontal bar 213 can be stably connected to the wall to ensure that the overall installation stability of the meter box body 1 is maintained.

[0038] The utility model provides a photovoltaic intelligent grid-connected metering box, which is provided with an intelligent circuit breaker 15 to enable the intelligent circuit breaker to monitor the voltage, current and other parameters before the meter after the user-side inverter, and to realize functions such as remote control and automatic reclosing, and is provided with an auxiliary maintenance device 21, that is, the guide groove 2142, the first clamping groove 2143 and the second clamping groove 2144 provided in the support component 214 cooperate with each other, so that the limit block 2154 provided in the adjustment component 215 can realize the overall forward movement of the metering box body 1, so as to expand the intuitiveness and space of subsequent maintenance, and the adjustment component 215, that is, the locking wheel 21a1 provided in the locking structure 21a, is provided, and the locking state formed by the ball 21a2 and the spring sheet 21a4 and the locking shaft 21a8 and the spring 21a7 is realized to realize convenient adjustment and locking, so that the metering box body 1 can be tilted as a whole, so as to further improve the intuitiveness of subsequent maintenance, thereby achieving the advantages of efficient and intuitive maintenance auxiliary cooperation and improving the intuitiveness of maintenance.

[0039] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic intelligent grid-connected metering box, comprising a metering box body (1), wherein a first box door (2) and a second box door (3) are rotatably connected to the front side of the metering box body (1) respectively, and an observation window (4) is installed on the front side of the first box door (2), a warning sign (5) and a nameplate (6) are respectively arranged on the front side of the second box door (3), and the warning sign (5) and the nameplate (6) are arranged opposite to each other in the upper and lower directions, a door lock handle (7) is installed on the right side of the first box door (2) and the second box door (3), a top cover (8) is integrally connected to the top of the metering box body (1), and a heat dissipation hole (9) is opened on the right side of the metering box body (1); Features: The invention also comprises an auxiliary maintenance device (21) arranged outside the meter box body (1), the auxiliary maintenance device (21) comprising vertical bars (211) arranged on the left and right sides of the meter box body (1), mounting blocks (212) fixed on the two sides of the outer ends of the vertical bars (211), a horizontal bar (213) arranged between the mounting blocks (212) on both sides, a support assembly (214) fastened to the middle of the vertical bar (211), and an adjustment assembly (215) connected to the inside of the support assembly (214) and connected to the side of the meter box body (1).

2. According to claim 1, a photovoltaic intelligent grid-connected metering box is characterized in that: A metering chamber (10) and a control chamber (11) are respectively provided in the upper and lower parts of the metering box body (1), and the left sides of the metering chamber (10) and the control chamber (11) are both connected to a grounding wire (12) through a door. A grounding busbar (13) is provided in the left side of the control chamber (11), and a surge protector (14) is provided on the right side of the grounding busbar (13). An intelligent circuit breaker (15) is provided on the upper end of the surge protector (14), and an automatic reclosing protector (16) is provided on the right side of the intelligent circuit breaker (15). An isolating switch (17) is provided on the right side of the control chamber (11). An electric meter bracket (18) is screwed in the metering chamber (10), and the electric meter bracket (18) is connected to the electric meter body (19) on the outside. A cable hole (20) is provided at the lower end of the control chamber (11).

3. According to claim 1, a photovoltaic intelligent grid-connected metering box is characterized in that: The support assembly (214) comprises a support plate (2141) fastened to the middle of the vertical bar (211), a guide groove (2142) provided inside the support plate (2141), a first clamping groove (2143) and a second clamping groove (2144) integrally provided at the rear and front sides of the guide groove (2142), and a limiting groove (2145) provided inside the guide groove (2142), the first clamping groove (2143) and the second clamping groove (2144).

4. According to claim 1, a photovoltaic intelligent grid-connected metering box is characterized in that: The adjustment assembly (215) comprises a connection block (2151) fastened to the left and right sides of the metering box body (1), a guide rod (2152) inserted into the connection block (2151), a slider (2153) sleeved on the outside of the guide rod (2152), a limit block (2154) arranged on the outside of the slider (2153), a pull rod (2155) fixed to the side of the limit block (2154), a connecting rod (2156) inserted into the upper end of the limit block (2154), a movable shell (2157) sleeved on the outside of the connecting rod (2156), a compression spring (2158) disposed in the movable shell (2157) and abutting against the upper end of the connecting rod (2156), and a locking structure (21a) arranged in the limit block (2154).

5. According to claim 4, a photovoltaic intelligent grid-connected metering box is characterized in that: The locking structure (21a) comprises a locking wheel (21a1) arranged inside the limit block (2154), a round ball (21a2) abutting against one side of the locking wheel (21a1), a connecting strip (21a3) installed outside the round ball (21a2), spring sheets (21a4) embedded on both sides of the outer ends of the connecting strip (21a3), a fixing block (21a5) fastened to the side of the spring sheet (21a4), a connecting tube (21a6) arranged on one side inside the limit block (2154), a spring (21a7) placed inside the connecting tube (21a6), and a locking shaft (21a8) inserted into the connecting tube (21a6) and abutting against the outside of the spring (21a7).

6. According to claim 1, a photovoltaic intelligent grid-connected metering box is characterized in that: The horizontal bars (213) are symmetrically arranged in the vertical direction, and the horizontal bars (213), the vertical bars (211) and the mounting blocks (212) form a rectangular frame.

7. A photovoltaic intelligent grid-connected metering box according to claim 4, characterized in that: The limit block (2154) is slidably embedded in the guide groove (2142), and the overall size of the limit block (2154) matches the internal size of the guide groove (2142), the first clamping groove (2143) and the second clamping groove.

8. The photovoltaic intelligent grid-connected metering box according to claim 5, characterized in that: The round ball (21a2) and the locking shaft (21a8) are opposite to each other on the left and right sides along the inside of the limiting block (2154), and the round ball (21a2) and the locking shaft (21a8) are both embedded in the outside of the locking wheel (21a1).

Images