Intelligent switchgear drawer

Abstract

The application discloses an intelligent switch cabinet drawer. The intelligent switch cabinet drawer comprises a drawer body, a circuit breaker arranged on the drawer body, a primary incoming line plug arranged on the drawer and connected to an incoming line end of the circuit breaker, and a primary outgoing line plug arranged on the drawer and connected to an outgoing line end of the circuit breaker through a copper bar. Current signal acquisition units and control modules are connected through signal lines passing through a first signal passage. Temperature signal acquisition units and voltage signal acquisition units are connected to the control modules through signal lines passing through a second signal passage. Therefore, the application provides an intelligent switch cabinet drawer capable of realizing overload long-time delay, short-circuit short-time delay, short-circuit instantaneous, ground protection, leakage protection, fault recording, motor protection, overload, open-phase, locked-rotor, load imbalance, voltage anomaly and the like.

Description

Technical Field

[0001] This application relates to the field of switch cabinets, and more specifically, to an intelligent switch cabinet drawer. Background Technology

[0002] In switchgear design, switching and control equipment are integrated into drawers. The most crucial components of these are circuit breakers and detection devices. Circuit breakers connect to the distribution busbar and electrical appliances, supplying power. Detection devices monitor current, voltage, and temperature passing through the circuit breaker, and then control its operation based on this information and human commands. The circuit breaker's input terminal connects to a primary input connector (for connecting to the distribution busbar), and its output terminal connects to a primary output connector (for connecting to the user), forming the primary circuit. Various detection devices and their connected cables constitute the secondary circuit. The secondary circuit ultimately exits from the drawer through a secondary output connector and is then input to the switchgear's server.

[0003] In existing designs, devices used to detect parameters such as current, voltage, and temperature are independent detection devices. These independent detection devices include both signal acquisition units for detecting analog signals such as current, voltage, and temperature, and signal processing units for processing these analog signals. Therefore, these detection devices are bulky.

[0004] Therefore, in existing switchgear drawers, because these bulky current detectors, voltage detectors, and temperature detectors need to be installed on the copper busbars connected to the circuit breakers, the copper busbars of the circuit breakers need to be spaced further apart than before. As a result, the copper busbars and detectors in the current switchgear cabinet are scattered and bulky.

[0005] Furthermore, due to the limited installation space of the drawer, insufficient electrical clearance between primary circuits and excessively close spacing between primary and secondary circuits can easily lead to signal crosstalk in the secondary circuits. This also makes it difficult to separate the primary and secondary circuits for maintenance while the primary circuit is powered on. Additionally, secondary circuits are more likely to be clustered together; for example, signal lines for secondary circuits typically extend from the bottom of the drawer to the side, and then from the side to the secondary output connector. Therefore, signal crosstalk between secondary circuits is also exceptionally severe. Summary of the Invention

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] As a first aspect of this application, in order to address the technical problems mentioned in the background art, some embodiments of this application provide an intelligent switch cabinet drawer, including:

[0008] Drawer body;

[0009] The circuit breaker is located on the drawer body;

[0010] The primary input plug is located on the drawer and connects to the input terminal of the circuit breaker.

[0011] A primary outlet plug is installed on the drawer and connected to the outlet terminal of the circuit breaker via a copper busbar.

[0012] The control module is located on the drawer body, and is connected to the secondary output plug and the circuit breaker.

[0013] The signal acquisition components, located on the primary input connector, include a voltage signal acquisition unit, a current signal acquisition unit, and a temperature signal acquisition unit; all three units are connected to the control module via signal lines.

[0014] The signal line connecting the current signal acquisition unit and the control module passes through the first signal path.

[0015] The signal lines connecting the temperature signal acquisition unit and the voltage signal acquisition unit to the control module pass through the second signal path.

[0016] In this solution, the signal acquisition component is used to acquire analog signals of relevant quantities and does not need to directly convert the analog signals into digital signals that the microcontroller can directly read. Therefore, the detector itself does not integrate parts for analog signal calculation and processing. Instead, the functional modules for analyzing these analog signals and converting them into the required specific information such as voltage, current, and temperature are all integrated into the control module. This results in a smaller signal acquisition component, so its placement on the primary input connector has minimal impact on the connector's size. To a certain extent, the original layout of the primary input connector will not require significant changes due to the need to accommodate it. The control module itself is a functional module for information calculation, integrating an analog signal processing component. Although this increases the control module's size, it only increases the size of one part within the drawer and does not affect the primary circuit. Therefore, the copper busbars connecting the primary output connector and the circuit breaker's output terminals can be arranged within a general range. This allows the distance between the primary and secondary circuits to be controlled within a large range. To address the signal crosstalk issue between secondary circuits, two signal paths are designed within the drawer: one for transmitting current signals and the other for transmitting voltage and temperature signals. Therefore, the current and voltage signal lines do not intersect or become tangled on the paths from the current acquisition unit, voltage acquisition unit, and temperature acquisition unit to the control module. This prevents crosstalk between the current and voltage signals. Regarding the unavoidable signal crosstalk caused by the convergence of signal lines at the secondary output connector, this solution integrates the detector component's signal processing unit into the control module. Therefore, the processing of current, voltage, and temperature signals can be completed on the control module itself, eliminating the need to input the raw signals to the input device via the secondary output connector. Thus, the signals input from the control module to the secondary output connector are conventional low-current digital signals, and these initial signals are processed at the control module. This also helps mitigate signal crosstalk between the control module and the secondary output connector.

[0017] Because each type of sensor requires a different initial signal to be detected, the shape of the sensor varies. For current sensors, they are generally coil windings, so they need to be mounted on the circuit to be detected.

[0018] For a voltage detector, it only needs two distinct contact points with the circuit being detected;

[0019] For temperature detectors, they only need to be in contact with the circuit being detected. However, the shape of the input plug is generally fixed; therefore, when installing the sensor on the circuit, it may be necessary to modify the copper busbar at the installation location, which can lead to inconsistent product specifications and reduced production efficiency. To address this, this application provides the following technical solution:

[0020] Furthermore, the primary input plug includes a conductive post, a connecting post, a connecting conductor, a fixing base, and a sampling element; the fixing base is mounted on the drawer body, the conductive post passes through the fixing base, one end of the connecting conductor is connected to the conductive post, and the other end is connected to the connecting post; the conductive post is used to connect to the distribution busbar, and the connecting post is used to connect to the circuit breaker; the conductive post is provided with an anti-rotation protrusion, the fixing base is provided with an anti-rotation groove, one side of the sampling element contacts the anti-rotation protrusion, and the other side contacts the fixing base; the current signal acquisition unit is sleeved on the connecting post, and the voltage signal acquisition unit and the temperature signal acquisition unit are mounted on the sampling element.

[0021] In this design, the voltage and temperature signal acquisition units are pre-installed on the sampling component, so they do not significantly affect the conductive or connecting posts. The current sensor is also mounted on the connecting post, so it does not affect the connecting post either. Therefore, the sampling component only needs to be shaped to fit the different temperature and voltage acquisition units. The copper busbars constituting the first and second circuits do not require substantial modification. This allows for the pre-production of the copper busbars forming the output and input terminals of the corresponding circuit breakers, even during the R&D phase. As for the conductive posts themselves, since no modifications have been made for installing the aforementioned signal acquisition units, the arrangement of the signal acquisition units does not need to be considered during the design of the conductive posts.

[0022] Furthermore, the current signal acquisition unit is the signal acquisition section of a milliampere-level current transformer.

[0023] The working principle of a milliampere-level current transformer is the same as that of a traditional current transformer, except that it uses a smaller wire diameter for the winding, and the output induced current is in the milliampere range. Therefore, although the number of turns in the coil is high, the smaller wire diameter results in a smaller overall size, which further reduces the size of the signal acquisition component. Furthermore, because milliampere-level current is safer, there is no need for bulky protection devices. The protection circuitry can be integrated into the control module. Compared to the protection circuitry of a traditional current transformer, the protection circuitry integrated into the control module is significantly smaller.

[0024] Furthermore, the sampling element has a ring-shaped structure, and the conductive element passes through the sampling element.

[0025] The sampling component is constructed in a ring shape, with the conductive component passing through it. Therefore, there is a certain positioning effect between the conductive component and the sampling ring, preventing displacement of the sampling component during assembly. Simultaneously, the pressure applied to the sampling component by the anti-rotation protrusion also prevents the sampling component from easily shifting.

[0026] Furthermore, the sampling component is provided with multiple sampling protrusions, which are in contact with the outer edge of the conductive component.

[0027] Multiple sampling protrusions provide multiple sampling areas along the outer edge of the conductive component, ensuring that the heat from the conductive component can be transferred to the sampling component more quickly. Since the sampling protrusions are located on the inner wall of the sampling component, the sampling component is arranged circumferentially around the conductive component, resulting in a more stable connection between the sampling component and the conductive component, making it less likely for the conductive component to detach from the sampling component due to vibration.

[0028] Furthermore, a guide surface is provided on the sampling protrusion.

[0029] By setting a guide surface, the conductive component can be guided when inserted into the sampling component. When the distance between the sampling protrusions is slightly smaller than the diameter of the conductive component, the end of the guide surface abuts against the guide surface of the sampling protrusion, which pushes the sampling protrusion to deform inward, allowing the conductive component to pass through the sampling component. At this time, the outer walls of both the sampling protrusion and the conductive component will have a higher degree of deformation, so the pressure between the sampling protrusion and the conductive component will be greater.

[0030] Furthermore, the arrangement direction of the conductive posts is perpendicular to the arrangement direction of the connecting posts, and at least one of the connecting posts and conductive posts forms a rotatable connection with the connecting conductor; at least one of the connecting posts and conductive posts forms a sliding connection with the connecting conductor.

[0031] The arrangement of the connecting posts and the conductive posts is perpendicular to each other, which is more suitable for the positional relationship between the circuit breaker and the power distribution wiring. Because the power distribution busbar is generally arranged vertically inside the cabinet, the A, B, and C phases of the busbar are arranged horizontally at intervals. However, after the circuit breaker is placed inside the drawer, the A, B, and C phase interfaces of the circuit breaker's input terminals are generally arranged vertically. Therefore, the arrangement of the circuit breaker's input terminals is usually perpendicular to the arrangement of the power distribution busbar. Thus, in this design, the arrangement of the conductive posts and connecting posts is more adaptable to the positional relationship between the power distribution busbar and the circuit breaker. Furthermore, the connecting conductors can rotate and slide relative to each other, allowing for adjustable angles and lengths, thereby accommodating the phase distances of different circuit breakers.

[0032] Furthermore, the primary input plug also includes a fixing plate, at least one of the connecting post and the conductive post passing through the fixing plate, the fixing plate is provided with multiple parallel protrusions, the extension direction of the protrusions is parallel to the arrangement direction of the conductive post, and the arrangement direction of the protrusions is perpendicular to the arrangement direction of the conductive post; multiple notches are also provided on the protrusions.

[0033] Multiple protrusions will be arranged side by side on one side of the connecting column, so that the signal lines of the second sensors on different connecting columns can be arranged along different protrusions respectively. This can better organize the signal lines of the current signal acquisition unit. Furthermore, because the signal lines of each sensor can be arranged along different protrusions, it is not easy to get confused during maintenance. Cable ties can be passed through the notch, and after the ends of the cable ties are connected, the signal lines are fixed on the protrusions to avoid the signal lines from becoming tangled. Therefore, setting the notch makes it easy to fix the signal lines on the protrusions with cable ties.

[0034] Furthermore, the primary input plug also includes a fixed cover, which has multiple positioning holes, and the connecting post has positioning pins that correspond to the positioning holes.

[0035] The locating pin on the connecting post is inserted into the locating hole to position the connecting post, ensuring that the connecting post corresponds to different phases on the circuit breaker. Since the conductive posts correspond to the distribution busbars, they are generally fixed. However, the connecting post needs to correspond to different models of circuit breakers, so it needs to be moved. After the connecting post is fixed by the locating pin and locating hole, the positional relationship between the connecting post, the connecting conductor, and the conductive post will not change.

[0036] Furthermore, the primary output plug includes a connector, a fixed conductor, a screw, and a nut; the connector is fixedly mounted on the drawer, the fixed conductor is mounted on the connector, and the screw is used to connect the fixed conductor and the copper busbar connected to the output terminal of the circuit breaker;

[0037] The screw passes through the fixed conductor and the copper busbar and is screwed to the nut; wherein, the fixed conductor is provided with an anti-rotation groove for the screw to pass through, and the screw is provided with an anti-rotation part that cooperates with the anti-rotation groove to prevent rotation.

[0038] In the solution provided in this application, when using bolts to fix the conductor and copper busbar, because an anti-rotation groove is provided on the copper busbar and an anti-rotation part is provided on the screw, when the screw is inserted into the fixed conductor, the anti-rotation part and the anti-rotation groove cooperate with each other, so the screw and the fixed conductor form an anti-rotation structure. The fixed conductor is fixed to the drawer through the connecting seat, so the fixed conductor is fixed and will not rotate. Therefore, when the copper busbar is put on the screw and then the nut is tightened to make the copper busbar and the fixed conductor fit together, the screw will not rotate, and only the nut needs to be tightened. In this way, the worker does not need to use both hands to exert force during assembly, but only needs to use one hand, thereby reducing the worker's physical exertion and increasing assembly efficiency.

[0039] When workers install copper busbars and fixing conductors, the screw may fall out of the fixing conductors and copper busbars after passing through them due to lack of fixation. Therefore, during assembly, the screw needs to be stopped. This requires the worker to hold the screw with one hand to prevent it from falling out while turning the nut with the other. This still requires two hands, which affects worker efficiency. Furthermore, if the bolt falls out of the fixing conductors and copper busbars, reassembly is necessary, further reducing efficiency. To address this problem, this application provides the following technical solution:

[0040] Furthermore, the connector is provided with a positioning groove, which matches the end of the screw to position the screw. The fixed conductor includes a fixing part and a connecting part. An anti-rotation through groove is provided on the connecting part, and the fixing part and the connecting part are perpendicular to each other.

[0041] Thus, during screw assembly, because the fixing part and the connecting part are perpendicular to each other, the connecting part aligns with the end face of the connector. The end face of the connector directly forms the support. A positioning groove is then set in this support to position the end of the screw. Therefore, during screw assembly, the bottom of the screw first contacts the inner wall of the bottom of the positioning groove, then the conductor and copper busbar are fitted onto the screw, and finally the nut is tightened. During assembly, the presence of the support prevents the screw from falling off, increasing assembly efficiency. Furthermore, because the fixing conductor can be directly inserted into the connector, the connector can create a groove that encloses all four sides of the conductor, eliminating the need for an additional protective sleeve to cover the fixing conductor, thereby reducing production costs.

[0042] To prevent wear and tear on the connection between the drawer and the power distribution busbar during prolonged drawer operation, which could reduce the lifespan of the busbar, this application provides the following technical solution:

[0043] Furthermore, the intelligent switch cabinet drawer also includes a two-way socket, which is equipped with a first interface and a second interface. The first interface is connected to the power distribution bus, and the second interface is connected to the conductive post.

[0044] In this solution, by installing a two-way socket on the power distribution busbar, and with the conductive post and the two-way socket working together, direct contact between the incoming plug and the power distribution busbar can be avoided, preventing damage to the busbar from impact from the plug. Furthermore, it avoids the problem of the entire busbar needing to be replaced due to wear and tear after repeated drawer pulls when the conductive post and the busbar are in direct contact; in this solution, only the two-way socket needs to be replaced.

[0045] Furthermore, the two-way socket is provided with a guide groove, and the primary input plug is provided with a guide post. The guide post and the guide groove are guided and matched, and the height of the guide post is greater than the height of the conductive post.

[0046] To address the issue of the primary power connector potentially impacting the distribution busbar due to slight movement of the drawer during operation, the more prominent guide post prevents the guide relationship between the guide post and guide groove from being established when the drawer vibrates. This causes the guide post and guide groove to misalign, resulting in the guide post impacting the guide groove, while the conductive post and the bidirectional socket do not make contact. This design ensures a higher degree of fit between the conductive post and the bidirectional socket, preventing the connection point from impacting the distribution busbar due to misalignment. Furthermore, it guarantees a high-precision fit between the connection point and the plug, while also preventing damage to the connection point and plug point caused by slight drawer movement due to impact from misalignment. Attached Figure Description

[0047] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0048] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0049] In the attached diagram:

[0050] Figure 1 A 3D view of the intelligent detection device;

[0051] Figure 2 A 3D diagram showing the circuit breaker, primary input plug, and bidirectional socket working together;

[0052] Figure 3 An exploded view of a primary input connector;

[0053] Figure 4A three-dimensional view showing the mating of the conductive post and the mounting base;

[0054] Figure 5 A three-dimensional view of the mounting base;

[0055] Figure 6 This is an enlarged view of a portion of the fixture structure;

[0056] Figure 7 A three-dimensional view of the sample;

[0057] Figure 8 An exploded view of the primary input connector section;

[0058] Figure 9 A three-dimensional diagram showing the connection of conductors;

[0059] Figure 10 A three-dimensional view of the connecting casing;

[0060] Figure 11 A three-dimensional view of the fixed plate;

[0061] Figure 12 A three-dimensional view of the fixed plate;

[0062] Figure 13 This is a schematic diagram showing the interaction between a single-inlet plug and a two-way socket;

[0063] Figure 14 An exploded view of the two-way socket after the mounting shell has been removed;

[0064] Figure 15 A 3D view of a single-outlet plug;

[0065] Figure 16 An exploded view of a single-outlet plug;

[0066] Figure 17 This is a cross-sectional view of a single-outlet plug;

[0067] Figure 18 A 3D view of the secondary cable outlet plug and secondary cable outlet socket when separated;

[0068] Figure 19 This is a front view of the secondary cable plug and secondary cable socket when they are connected, and the guide rod and guide hole are in perspective.

[0069] Figure label:

[0070] 1. Intelligent switch cabinet drawers;

[0071] 100. Drawer body;

[0072] 200. Circuit breaker; 201. Incoming terminal; 202. Outgoing terminal; 203. Copper busbar;

[0073] 300. Signal acquisition component; 301. Current signal acquisition unit;

[0074] 400. Primary input connector;

[0075] 401, Conductive post; 4011, Anti-rotation protrusion;

[0076] 402. Connecting column;

[0077] 403, connecting conductor; 403a, rotating slot;

[0078] 404, mounting base; 404a, through hole; 404b, anti-rotation groove; 4041, limiting protrusion; 404c, limiting groove;

[0079] 405, Sampling component; 4051, Sampling protrusion; 4051a, Guide surface; 4052, Positioning component; 4052a, Extension; 4052b, Protrusion.

[0080] 406. Fixed cover; 4061. Positioning hole; 4062. Guide post;

[0081] 407. Connecting cover; 4071. Locating pin;

[0082] 408, Fixing plate; 408a, Groove; 4081, Fixing cylinder; 4082, Protrusion; 4082a, Notch;

[0083] 500, Two-way socket; 50a, First interface; 50b, Second interface;

[0084] 501, First conductive component; 5011, First rotating part;

[0085] 502, Second conductive element; 5021, Second rotating part;

[0086] 503. Damping component; 5031. Support component; 5032. Elastic component;

[0087] 504, fixed housing; 504a, guide groove;

[0088] 600, single-outlet plug;

[0089] 601, Connecting seat; 6011, Sleeve body; 6011a, Positioning rod;

[0090] 6012, base; 601a, fixing groove; 601b, positioning groove;

[0091] 602, Fixed conductor; 6021, Fixing part; 6022, Connecting part; 602a, Anti-rotation groove;

[0092] 603, Bolt; 6031, Threaded rod; 6031a, Stud; 6031b, Nut; 6031c, Anti-rotation part;

[0093] 6032, Nut;

[0094] 700. Control module; 701. First signal path; 702. Second signal path;

[0095] 800. Secondary cable outlet plug; 801. Secondary cable outlet socket; 802. Spring; 803. Guide rod; 804. Guide hole; Detailed Implementation

[0096] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0097] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0098] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0099] Reference Figure 1The intelligent switchgear drawer 1 includes a drawer body 100, a circuit breaker 200, a signal acquisition component 300, a control module 700, a primary input plug 400, a primary output plug 600, and a two-way socket 500. The drawer body 100 has a cavity for accommodating the circuit breaker 200 and the signal acquisition component 300. The circuit breaker 200 is a common molded case circuit breaker 200, such as an NSX molded case circuit breaker manufactured by Schneider Electric. The control module 700 controls the on / off state of the circuit breaker 200. The primary input plug 400 and the primary output plug 600 are connected to the drawer, and the two-way socket 500 is connected to the power distribution busbar. The input terminal 201 of the circuit breaker 200 is connected to the input plug, which then connects to the two-way socket 500, and subsequently to the power distribution busbar. The output terminal 202 of the circuit breaker 200 is connected to the primary output plug 600 via a copper busbar 203. The signal acquisition component 300 is installed on the primary input plug 400. The signal acquisition component 300 includes a voltage signal acquisition unit, a current signal acquisition unit 301, and a temperature signal acquisition unit. All three units are connected to the control module 700 via signal lines. The control module 700 processes the analog signals generated by the various signal acquisition units. The control module 700 is connected to the signal acquisition units via signal lines and is also connected to the circuit breaker 200 via signal lines. Thus, the signal acquisition units send the acquired analog signals to the control module 700, which analyzes and monitors the analog signals to control whether the circuit breaker 200 is switched on or off.

[0100] In this application, the analog signal is the initial signal acquired by the signal acquisition unit. For example, in the existing mutual inductance current signal acquisition unit 301, a mutual inductance coil is wrapped around the conductor under test. When current flows through the conductor, an induced current is generated in the mutual inductance coil. The magnitude of this induced current reflects the magnitude of the current flowing through the conductor. This induced current is the analog signal, which needs to be processed and converted into a digital voltage signal before it can be read by the MCU. In this application, the analog signal generated by the signal acquisition unit is directly sent to the control module 700, where the built-in analog signal processing unit processes these analog signals. Thus, in the technical solution designed in this application, the signal acquisition unit only has a signal collection part and does not have an analog signal processing part, so the signal acquisition unit is smaller.

[0101] The current signal acquisition unit 301 is a current inductor coil. In this embodiment, the current signal acquisition unit 301 is a milliampere-level current transformer, and the current passing through it is at the milliampere level. The current signal acquisition unit 301 is sleeved on the sampling element 405. The voltage signal acquisition unit has a ring structure and is located on the sampling element 405. The temperature signal acquisition unit is attached to the sampling element 405, thereby collecting temperature data.

[0102] refer to Figure 1 Furthermore, the signal lines connecting the current signal acquisition unit 301 and the control module 700 pass through the first signal path 701; the signal lines connecting the temperature signal acquisition unit and the voltage signal acquisition unit to the control module 700 pass through the second signal path 702; the first signal path 701 extends along the bottom inner wall of the drawer body 100 to the control module 700, and the second signal path 702 extends along the side wall of the drawer body 100 to the control module 700.

[0103] refer to Figure 2-3 The primary input plug 400 includes a conductive post 401, a connecting post 402, a connecting conductor 403, a mounting base 404, and a sampling element 405. The mounting base 404 is mounted on the drawer body 100. The conductive post 401 passes through the mounting base 404. One end of the connecting conductor 403 is connected to the conductive post 401, and the other end is connected to the connecting post 402. The conductive post 401 is used to connect to the distribution busbar, and the connecting post 402 is used to connect to the circuit breaker 200. The mounting base 404 has a through hole 404a, and the sampling element 405 is mounted on the mounting base 404. The conductive post 401 passes through the through hole 404a, and there are at least two different contact surfaces between the conductive post 401 and the sampling element 405. Through these two different contact surfaces, the sampling element 405 can obtain voltage information and temperature information of the conductive element. In other words, by detecting the voltage and temperature information on the sampling component 405, the voltage and temperature information of the conductive component can be deduced.

[0104] refer to Figure 4 The conductive post 401 is provided with an anti-rotation protrusion 4011, and the fixing seat 404 is provided with an anti-rotation groove 404b. The anti-rotation protrusion 4011 is inserted into the anti-rotation groove 404b, so that the conductive post 401 and the fixing seat 404 form an anti-rotation fit, and thus the conductive post 401 cannot rotate after being inserted into the fixing seat 404. The sampling element 405 is located between the anti-rotation protrusion 4011 and the fixing seat 404, with one side of the sampling element 405 contacting the fixing seat 404 and the other side contacting the anti-rotation protrusion 4011. In this way, after the conductive post 401 passes through the through hole 404a, it can position and fix the sampling element 405.

[0105] refer to Figure 7The sampling element 405 is constructed as a ring structure. The diameter of the through hole 404a is smaller than the outer diameter of the sampling element 405. Multiple sampling protrusions 4051 are provided on the inner wall of the sampling element 405, and these protrusions 4051 are evenly distributed on the inner wall. Each sampling protrusion 4051 has a guide surface 4051a on its end face, which is arc-shaped. When the conductive post 401 is inserted into the sampling element 405, the end of the conductive post 401 will first contact the guide surface 4051a before being inserted into the sampling element 405 and the sampling seat. Thus, the sampling protrusions 4051 can play a corresponding guiding role.

[0106] refer to Figure 5 , Figure 6 , Figure 7 Furthermore, the sampling member 405 is provided with a positioning member 4052, which includes an extension 4052a and a protruding part 4052b. One end of the extension 4052a is connected to the sampling member 405, and the other end is connected to the protruding part 4052b. The fixing base 404 is provided with a limiting protrusion 4041, and a limiting groove 404c is formed between the two limiting protrusions 4041. The extension 4052a passes through the limiting groove 404c and extends to the through hole, which penetrates the fixing base 404. The protruding part 4052b protrudes from the through hole. In this way, the voltage information acquisition unit and the temperature information acquisition unit can be arranged on the side without the anti-rotation protrusion 4011 and the anti-rotation groove 404b.

[0107] refer to Figure 8 Furthermore, the positional relationship between the conductive posts 401 and the connecting posts 402 is as follows: The conductive posts 401 are arranged along the transverse direction, corresponding to the positions of the A, B, and C phases of the distribution busbar. The connecting posts 402 are arranged along the longitudinal direction, and their arrangement directions are perpendicular to those of the conductive posts 401. The conductive posts 401 and the connecting posts 402 are connected by connecting conductors 403. In actual design, although the arrangement direction of the three-phase electrical interfaces of the circuit breaker 200 is not consistent with the configuration direction of the three-phase electrical interfaces of the distribution busbar, it is permissible for one of the terminals to overlap. Thus, at most one conductive post 401 and one connecting post 402 may overlap. For example, the conductive post 401 connected to phase A of the distribution busbar and the connecting post 402 connected to phase A of the circuit breaker 200 may overlap.

[0108] refer to Figure 8At least one of the connecting post 402 and the conductive post 401 is rotatably connected to the connecting conductor 403; at least one of the connecting post 402 and the conductive post 401 is slidably connected to the connecting conductor 403. Specifically, the connecting conductor 403 is rotatably connected to both the connecting post 402 and the conductive post 401, and the connecting conductor 403 is slidably connected to both the connecting post 402 and the conductive post 401. Referring to the figure, taking the connection between the connecting post 402 and the connecting conductor 403 as an example: the rotatable connection is formed as follows: the connecting conductor 403 is provided with a rotating groove 403a, the connecting post 402 is provided with a rotating pin, the rotating pin is screwed onto the connecting post 402, and the rotating pin passes through the rotating groove 403a, so that the connecting conductor 403 can rotate around the rotating pin. The sliding connection is constructed as follows: the aforementioned rotating groove 403a is constructed as an oblong hole, and the rotating pin is constructed as a guide. In this way, the connecting conductor 403 can rotate around the rotating pin and slide relative to the rotating pin. When it is necessary to tighten both, the rotating pin can be tightened by the nut at the end of the pin to lock the connecting conductor 403.

[0109] refer to Figure 9 , Figure 10 , Figure 11 Furthermore, to facilitate the fixing of the connecting conductor 403, the primary input plug 400 also includes a fixing cover 406. A fixing base 404 is disposed within the fixing cover 406. A conductive post 401 extends from the outside of the fixing cover 406 to its inside. A connecting post 402 is disposed within the fixing cover 406. The fixing cover 406 has multiple positioning holes 4061, and the connecting conductor 403 has positioning pins 4071 corresponding to the positioning holes 4061. The positioning pins 4071 on the connecting conductor 403 are inserted into the positioning holes 4061 to position the connecting post 402. Specifically, a connecting shell is fitted onto the connecting conductor 403, covering its outer side. The positioning pins 4071 are disposed on the connecting shell and inserted into the positioning holes 4061 to position the connecting shell. Furthermore, to prevent the connecting post 402 from rotating, the connecting post 402 and the connecting cover 407 are fitted with a non-rotational fit. The end of the connecting post 402 has a hexagonal bolt 603. In this way, when the connecting post 402 is connected to the circuit breaker 200, the connecting post 402 cannot rotate, thereby increasing the installation efficiency.

[0110] refer to Figure 12Furthermore, the primary input connector 400 also includes a fixing plate 408, which is disposed within the fixing housing 406, with the fixing seat 404 located between the fixing housing 406 and the fixing plate 408. A slot 408a is provided on the fixing plate 408 at a position corresponding to the connecting post 402, through which the connecting post 402 protrudes and passes. A fixing cylinder 4081 is provided on the fixing plate 408, with the conductive post 401 partially inserted into the fixing cylinder 4081 but not protruding from the fixing plate 408. Multiple parallel protrusions 4082 are provided on the fixing plate 408. The extending direction of the protrusions 4082 is parallel to the arrangement direction of the conductive posts 401, and the arrangement direction of the protrusions 4082 is perpendicular to the arrangement direction of the conductive posts 401. Furthermore, at least three protrusions 4082 are provided, each corresponding to a signal line of the current signal detection unit on one of the three connecting posts 402. Simultaneously, a protrusion 4082 is provided on one side of both the voltage signal detection unit and the current signal detection unit, resulting in at least four protrusions 4082. A notch 4082a is provided on each protrusion 4082, allowing a cable tie to pass through.

[0111] Furthermore, when the drawer body 100 is pushed into the cabinet, the primary power input plug 400 is inserted into the two-way socket 500. If the primary power input plug 400 and the primary power input socket are not aligned, it can easily lead to damage to the two-way socket 500. Therefore, this solution provides the following structure:

[0112] refer to Figure 13 , Figure 14 The bidirectional socket 500 includes a first conductive element 501, a second conductive element 502, a damping element 503, and a fixing shell 504. One end of the first conductive element 501 and the second conductive element 502 forms a first interface 50a, and the other end of the first conductive element 501 and the second conductive element 502 forms a second interface 50b. The first interface is connected to the power distribution bus, and the second interface is connected to the incoming plug. The damping element 503 is connected to the first conductive element 501 and the second conductive element 502 to dampen the expansion of the first interface and the second interface.

[0113] The first conductive element 501, the second conductive element 502, and the damping element 503 are disposed within the fixed housing 504. The fixed housing 504 has a guide groove 504a, and the fixed cover 406 has a guide post 4062. The distance from the guide post 4062 to the guide groove 504a is greater than the distance from the conductive post 401 to the second interface. The guide post 4062 and the guide groove 504a are inserted first, followed by the conductive post 401 and the second interface.

[0114] Specifically, the first conductive member 501 has an outwardly protruding first rotating part 5011, and the second conductive member 502 has an outwardly protruding second rotating part 5012. The first rotating part 5011 and the second rotating part 5012 are arranged on opposite sides and are in contact with each other. In this way, the first conductive member 501 and the second conductive member 502 can form a rotatable connection through the contact point in the middle where they are in contact with each other.

[0115] The damping element 503 includes a support portion 5031 and an elastic portion 5032. One end of the elastic portion 5032 is connected to the end of the first conductive element 501 or the second conductive element 502, and the other end is connected to the support portion 5031. The support portion 5031 has a symmetrical structure and at least two elastic portions 5032 are provided to connect to the first and second conductive elements 501 and 502 respectively. Thus, when the ends of the first conductive element 501 and the second conductive element 502 move away from each other to expand the first or second interface, the elastic portion 5032 is stretched, and the elastic portion 5032 generates a pulling force to return the ends of the first conductive element 501 and the second conductive element 502 to their original positions. The damping element 503 is made of an elastic metal material, and the elastic portion 5032 is arc-shaped. More specifically, the damping element 503 is constructed in the shape of an "I", with the support part 5031 forming the vertical stroke in the middle of the "I" character and the four elastic parts 5032 forming the two horizontal strokes at the top and bottom of the "I" character.

[0116] refer to Figure 1 and Figure 15 In this design, by arranging the current signal detection unit, voltage signal detection unit, and temperature signal detection unit all in the incoming plug section, only a standardized copper busbar 203 is needed to complete the connection from the outgoing terminal 202 of the circuit breaker 200 to the primary outgoing plug 600, eliminating the need for other unnecessary structures. This allows for a standardized installation of the copper busbar 203 between the circuit breaker 200 and the primary outgoing plug 600, and it can be positioned as close as possible to the drawer wall. Furthermore, an insulating cover can be installed to shield it, providing electrical isolation and facilitating live-line work.

[0117] refer to Figure 16 and Figure 17 More specifically, the connection scheme between the primary input plug 400 and the copper busbar 203, and the scheme of setting the primary input plug 400 on the drawer are as follows: The primary output plug 600 includes a connector 601, a fixed conductor 602 and a bolt 603.

[0118] The connecting seat 601 is fixed to the drawer by welding or screwing. The fixing conductor 602 includes a fixing part 6021 and a connecting part 6022; the fixing part 6021 and the connecting part 6022 are perpendicular to each other, and the connecting part 6022 is provided with an anti-rotation through groove 602a. The connecting seat 601 includes a sleeve 6011 and a seat 6012, the sleeve 6011 being the outwardly protruding part of the seat 6012. The seat 6012 and the sleeve 6011 are integrally formed, and the seat 6012 and the sleeve 6011 are provided with a through fixing groove 601a, through which the fixing part 6021 passes. Bolt 603 includes a screw 6031 with a nut 6031b and a bolt 6031. The fixed conductor 602 and copper busbar 203 are partially attached, and the attached portions are provided with through holes. The screw 6031 passes through the fixed conductor 602 and copper busbar 203, and then the nut is put on the screw 6031, so that bolt 603 can fasten the connection between conductor 403 and the conductor to be connected. Bolt 603 also includes an elastic washer and a gasket. The elastic washer is disposed between the nut and the gasket, and the gasket contacts the copper busbar 203.

[0119] The screw 6031 includes a stud 6031a and a nut 6031b. The stud 6031a has threads, and the nut 6031b is connected to the end of the stud 6031a. An anti-rotation part 6031c is provided on the screw 6031, positioned between the stud 6031a and the nut 6031b. The anti-rotation groove 602a has a rectangular cross-section that mates with the anti-rotation part 6031c. Thus, after the anti-rotation part 6031c is inserted into the anti-rotation groove 602a, it provides the corresponding anti-rotation function. More specifically, the base 6012 has a support portion, which is positioned opposite to the portion of the connecting part 6022 where the anti-rotation groove 602a is located. Specifically, the support portion is on the connecting seat 601 and serves to support the screw 6031. More specifically, a positioning groove 601b is provided on the support portion, which matches the end of the screw 6031. The positioning groove 601b is a groove-shaped structure formed on the end face of the support portion. The depth of the positioning groove 601b is greater than the thickness of the nut 6031b, and the end face of the entrance portion of the positioning groove 601b is flush. A positioning hole 4061 is provided on the sleeve 6011, and a positioning rod 6011a passes through the positioning hole 4061 and the fixing conductor 602 to fix the fixing conductor 602.

[0120] refer to Figures 18-19The secondary cable outlet plug 800 is mounted on the control module 700 and is used to connect to the secondary cable outlet socket. The secondary cable outlet socket is mounted on the cabinet body, and the secondary cable outlet plug 800 is mounted on the drawer body 100. When the drawer body 100 is inserted into the cabinet body, the secondary cable outlet plug 800 is inserted into the secondary cable outlet socket. Furthermore, the secondary cable outlet socket 801 has a guide hole, and the secondary cable outlet plug 800 has a guide rod 803 aligned with the guide hole 804. When the drawer body is inserted into the cabinet body, the guide rod 803 first inserts into the guide hole 804, thus providing guidance when the secondary cable outlet plug 800 and the secondary cable outlet socket 801 align. A spring 802 is fitted onto the guide rod 803, which provides a certain degree of cushioning.

[0121] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. An intelligent switch cabinet drawer, characterized in that, include: Drawer body; The circuit breaker is located on the drawer body; The primary input plug is located on the drawer and connects to the input terminal of the circuit breaker. A primary output plug is installed on the drawer and connected to the output terminal of the circuit breaker via a copper busbar. The control module is located on the drawer body, and is connected to the secondary output plug and the circuit breaker. The signal acquisition components, located on the primary input connector, include a voltage signal acquisition unit, a current signal acquisition unit, and a temperature signal acquisition unit; all three units are connected to the control module via signal lines. The signal line connecting the current signal acquisition unit and the control module passes through the first signal path. The signal lines connecting the temperature signal acquisition unit and the voltage signal acquisition unit to the control module pass through a second signal path; the primary input plug includes a conductive post, a connecting post, a connecting conductor, a fixing base, and a sampling element; the fixing base is set on the drawer body, the conductive post passes through the fixing base, one end of the connecting conductor is connected to the conductive post, and the other end is connected to the connecting post; the conductive post is used to connect to the power distribution busbar, and the connecting post is used to connect to the circuit breaker; the conductive post is provided with an anti-rotation protrusion, the fixing base is provided with an anti-rotation groove, one side of the sampling element contacts the anti-rotation protrusion, and the other side contacts the fixing base; the current signal acquisition unit is sleeved on the connecting post, and the voltage signal acquisition unit and the temperature signal acquisition unit are set on the sampling element.

2. The intelligent switch cabinet drawer according to claim 1, characterized in that: The arrangement direction of the conductive posts is perpendicular to the arrangement direction of the connecting posts. At least one of the connecting posts and conductive posts is rotatably connected to the connecting conductor; at least one of the connecting posts and conductive posts is slidably connected to the connecting conductor.

3. The intelligent switch cabinet drawer according to claim 1, characterized in that: The primary input connector also includes a fixing plate, at least one of the connecting post and the conductive post passing through the fixing plate, the fixing plate is provided with multiple parallel protrusions, the extension direction of the protrusions is parallel to the arrangement direction of the conductive post, and the arrangement direction of the protrusions is perpendicular to the arrangement direction of the conductive post; multiple notches are also provided on the protrusions.

4. The intelligent switch cabinet drawer according to claim 1, characterized in that: The primary input plug also includes a fixed cover, which has multiple positioning holes, and the connecting post has positioning pins that correspond to the positioning holes.

5. The intelligent switch cabinet drawer according to claim 1, characterized in that: The primary output plug includes a connector, a fixed conductor, a screw, and a nut; the connector is fixedly mounted on the drawer, the fixed conductor is mounted on the connector, and the screw is used to connect the fixed conductor and the copper busbar connected to the output terminal of the circuit breaker; The screw passes through the fixed conductor and the copper busbar and is screwed into the nut; The fixed conductor is provided with an anti-rotation groove for the screw to pass through, and the screw is provided with an anti-rotation part that cooperates with the anti-rotation groove to prevent rotation.

6. The intelligent switch cabinet drawer according to claim 5, characterized in that: The connector is provided with a positioning groove, which matches the end of the screw to position the screw. The fixed conductor includes a fixing part and a connecting part. An anti-rotation through groove is provided on the connecting part. The fixing part and the connecting part are perpendicular to each other.

7. The intelligent switch cabinet drawer according to claim 1, characterized in that: The signal acquisition component includes a current signal acquisition unit, which is the signal acquisition part of a milliampere-level current transformer.

8. The intelligent switch cabinet drawer according to claim 1, characterized in that, The intelligent switch cabinet drawer also includes a two-way socket, which has a first interface and a second interface. The first interface is connected to the power distribution bus, and the second interface is connected to the conductive post.

9. The intelligent switch cabinet drawer according to claim 8, characterized in that, The two-way socket is equipped with a guide groove, and the primary input plug is equipped with a guide post. The guide post and the guide groove are guided and matched, and the height of the guide post is greater than the height of the conductive post.

Images