Electrical automation control cabinet with overload protection function

Abstract

The utility model provides a kind of electrical automation control cabinet with overload protection function, it is related to electrical control technical field, including control cabinet body;The inside of control cabinet body is equipped with installation cavity, the left side of the front side wall of control cabinet body is hinged with control cabinet door, the right side wall of control cabinet door is rotatably connected with handle lock in middle place, the inside wall of the lower side of control cabinet body is symmetrically equipped with current monitoring coil, the rear inside wall of control cabinet body is fixedly installed with central control unit in middle place;The current monitoring coil of the electrical automation control cabinet with overload protection function and temperature monitor on mounting seat form the real-time monitoring of double parameters of "current-temperature", effectively avoid the leakage protection problem that traditional single current monitoring is easy to appear, cooperate the quick response mechanism of central control unit, can cut off fault loop in initial stage of overload, to solve the problem that existing electrical automation control cabinet overload protection logic is unreasonable, fault influence is big, monitoring dimension is single.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical control, in particular to an electrical automation control cabinet with overload protection function. Background Art

[0002] Electrical automation control cabinets are core devices for centrally controlling electrical equipment in industrial production, and their stability directly affects the normal operation of the entire production system. In practical applications, due to load sudden changes, line aging, equipment failures and other reasons, overload often occurs in control cabinets, resulting in excessive current and temperature rise. If no protective measures are taken in time, safety accidents such as line burnout, equipment damage and even fire will be caused. In overload protection scenarios, existing electrical automation control cabinets have problems of unreasonable protection logic and easy expansion of the scope of fault influence, and have limited monitoring dimensions for the operation status of circuits, making it difficult to comprehensively predict potential risks, which easily causes potential safety hazards. At the same time, there are limitations in remote management and maintenance, on-site operation procedures are cumbersome, and troubleshooting and recovery take a long time. Utility Model Content

[0003] The utility model relates to an electrical automation control cabinet with an overload protection function, so as to solve the problems raised in the above background art that the existing electrical automation control cabinet has unreasonable overload protection logic, easy expansion of the scope of fault influence, single circuit monitoring dimension which makes it difficult to predict potential risks, prominent potential safety hazards, limited remote management and maintenance, cumbersome on-site operation, and long time consumption for troubleshooting and recovery.

[0004] The utility model provides an electrical automation control cabinet with overload protection function, which specifically comprises: a control cabinet body; an installation cavity is opened inside the control cabinet body, a control cabinet door is hinged to the left side of the front side wall of the control cabinet body, a handle lock is rotatably connected to the middle of the right side wall of the control cabinet door, current monitoring coils are symmetrically installed on the lower inner wall of the control cabinet body, a central control unit is fixedly installed in the middle of the rear inner wall of the control cabinet body, one main circuit breaker and two auxiliary circuit breakers are installed in a "pin-shaped" arrangement on the top of the rear inner wall of the control cabinet body, and both the main circuit breaker and the auxiliary circuit breakers are electrically connected to the central control unit.

[0005] Further, an arc-shaped locking groove is opened at the middle of the front side of the right inner wall of the control cabinet body, two threading holes are symmetrically opened on the bottom end surface of the control cabinet body, a transmission antenna is fixedly installed at the middle of the top outer wall of the control cabinet body, and the transmission antenna is electrically connected with the central control unit.

[0006] Further, an acousto-optic alarm is fixedly installed at the middle of the top of the front side wall of the control cabinet door, the acousto-optic alarm is electrically connected with the central control unit, and control buttons are installed at equal distances on the bottom of the front side wall of the control cabinet door.

[0007] Furthermore, each of the two current monitoring coils is fixedly connected to a mounting base at its bottom. The bottom of the mounting base is fixedly installed on the upper side of the wiring hole opened in the control cabinet. Temperature monitors are installed on the inner walls of the two mounting bases facing the wiring hole. The current monitoring coils are electrically connected to the central control unit.

[0008] Furthermore, two digital display screens are symmetrically installed on the front side wall of the central control unit, and a reset button is installed on the lower side of each digital display screen on the front side wall of the central control unit.

[0009] Furthermore, a locking fin is fixedly installed at the rear end of the handle lock, and the locking fin is slidably connected in a locking groove opened in the middle of the front side of the right inner wall of the control cabinet in a fan shape.

[0010] This utility model provides an electrical automation control cabinet with overload protection function, which has the following beneficial effects: 1. Through the "main circuit breaker + auxiliary circuit breaker" two-level protection structure, combined with the electrical linkage between the central control unit and the current monitoring coil, the overload protection is made more precise and hierarchical: when a single branch is overloaded, only the corresponding auxiliary circuit breaker is triggered, avoiding the direct tripping of the main circuit and the shutdown of the entire control system, ensuring the continuous operation of non-faulty branches, and greatly reducing production interruption losses. The current monitoring coil and the temperature monitor on the mounting base form a real-time monitoring of "current-temperature" dual parameters, which effectively avoids the leakage protection problem that is prone to occur in traditional single current monitoring. With the rapid response mechanism of the central control unit, the faulty circuit can be cut off in the early stage of overload, significantly reducing the risk of safety accidents such as line burnout and component damage, and improving the safety and reliability of the control cabinet operation.

[0011] 2. The integration of the transmission antenna and the central control unit breaks through the limitations of traditional control cabinets in on-site operation, enabling remote uploading and reset of overload data and protection status, as well as parameter adjustment. Combined with real-time parameter visualization on the digital display and quick recovery via the reset button, this significantly reduces the monitoring difficulty and maintenance costs for management personnel, and shortens downtime due to faults. Furthermore, the sealed fit between the locking fins and the arc-shaped locking groove not only enhances the stability of the control cabinet door but also reduces dust and moisture intrusion and external electromagnetic interference, protecting internal electrical components from damage. The manual operation function of the control buttons balances the needs of automatic protection and manual intervention, improving the equipment's flexibility to adapt to different working conditions and further ensuring the long-term stability of the control cabinet. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0013] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the right front side axial view structure of this utility model; Figure 2 This is a schematic diagram of the control cabinet door opening structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the control cabinet of this utility model; Figure 4 This is a schematic diagram of the current monitoring coil and central control unit of this utility model; Figure 5 This is a bottom view of the current monitoring coil and central control unit of this utility model; Figure 6 This is a schematic diagram of the bottom axial structure of the control cabinet of this utility model.

[0015] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Control cabinet; 101. Locking slot; 102. Wiring hole; 103. Transmission antenna; 2. Control cabinet door; 201. Audible and visual alarm; 202. Control button; 3. Handle lock; 301. Locking fin; 4. Current monitoring coil; 401. Mounting base; 402. Temperature monitor; 5. Central control unit; 501. Digital display screen; 502. Reset button; 6. Main circuit breaker; 7. Auxiliary circuit breaker. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown: The utility model provides an electrical automation control cabinet with an overload protection function, comprising: a control cabinet body 1, wherein an installation cavity is provided inside the control cabinet body 1, a control cabinet door 2 is hinged to the left side of the front side wall of the control cabinet body 1, a handle lock 3 is rotatably connected to the middle of the right side wall of the control cabinet door 2, current monitoring coils 4 are symmetrically installed on the lower inner wall of the control cabinet body 1, a central control unit 5 is fixedly installed at the middle of the rear inner wall of the control cabinet body 1, one main circuit breaker 6 and two auxiliary circuit breakers 7 are installed on the top of the rear inner wall of the control cabinet body 1 in a "pin-shaped" arrangement, both the main circuit breaker 6 and the auxiliary circuit breakers 7 are electrically connected to the central control unit 5. For specific functions, the main circuit breaker 6 is responsible for the ultimate overload protection of the main circuit, and the two auxiliary circuit breakers 7 provide independent protection for corresponding branch circuits. Through the electrical linkage with the central control unit 5, the "main-branch" two-level power-off control can be realized, which prevents the entire control system from shutting down due to direct tripping of the main circuit when a single branch is overloaded, and ensures the normal operation of non-faulty branches. After the central control unit 5 receives the real-time current signal from the current monitoring coils 4, it can drive the corresponding circuit breaker to act accurately. Compared with the traditional manual control of circuit breakers, the response speed is faster, the fault circuit can be cut off quickly in the early stage of overload, which effectively avoids safety accidents such as line burning and component damage caused by expanded overload.

[0018] Wherein, an arc-shaped locking slot 101 is provided in the middle of the front side of the right inner wall of the control cabinet body 1, two threading holes 102 are symmetrically provided on the bottom end face of the control cabinet body 1, a transmission antenna 103 is fixedly installed in the middle of the top outer wall of the control cabinet body 1, and the transmission antenna 103 is electrically connected to the central control unit 5. For specific functions, the locking slot 101 cooperates with the locking fin 301 of the handle lock 3 to realize the sealed locking of the control cabinet door 2, which reduces the entry of dust and water vapor into the installation cavity and protects the operation stability of internal electrical components. The threading holes 102 provide a regular channel for external lines to access, which prevents poor heat dissipation or signal interference caused by messy wiring. Meanwhile, when a line passes through the threading hole 102, it can directly enter the monitoring range of the current monitoring coil 4 and the temperature monitor 402, which ensures the continuity and accuracy of current and temperature signal collection. As a signal transmission carrier for the central control unit 5, the transmission antenna 103 can realize remote uploading of overload data and protection status, and receiving of commands such as remote reset and parameter adjustment, which breaks through the on-site operation limitation of traditional control cabinets, facilitates centralized monitoring and remote maintenance by managers, and improves management efficiency.

[0019] The bottom of each of the two current monitoring coils 4 is fixedly connected to a mounting base 401. The bottom of the mounting base 401 is fixedly installed on the upper side of the wiring hole 102 opened in the control cabinet 1. Temperature monitors 402 are installed on the inner walls of the two mounting bases 401 facing the wiring hole 102. The current monitoring coils 4 and the central control unit 5 are electrically connected. Two digital display screens 501 are symmetrically installed on the front wall of the central control unit 5. A reset button 502 is installed on the lower side of each digital display screen 501 on the front wall of the central control unit 5. Specifically, the mounting base 401 fixes the current monitoring coil 4 on the upper side of the wiring hole 102, so that when the wire passes through... Precise alignment with the coil ensures the accuracy of current signal acquisition. The temperature monitor 402 faces the wire hole 102 and can directly monitor the surface temperature of the line. Together with the current monitoring coil 4, it forms a dual-parameter monitoring of "current-temperature", avoiding leakage protection caused by relying solely on current monitoring. The digital display screen 501 can display the current value, temperature value and operating status of the corresponding branch in real time, realizing parameter visualization and making it convenient for on-site operators to intuitively grasp the equipment operation status. The reset button 502 provides convenient operation for system restoration after troubleshooting. Without disassembling the cabinet or complex settings, the corresponding branch can be quickly restarted, shortening maintenance downtime and improving work efficiency.

[0020] A sound and light alarm 201 is fixedly installed at the top center of the front wall of the control cabinet door 2. The sound and light alarm 201 is electrically connected to the central control unit 5. Control buttons 202 are installed at equal intervals at the bottom of the front wall of the control cabinet door 2. A locking fin 301 is fixedly installed at the rear end of the handle lock 3. The locking fin 301 is slidably connected in a locking groove 101 opened in the middle of the front side of the right inner wall of the control cabinet body 1 in a fan shape. Specifically, the sound and light alarm 201 is linked with the central control unit 5. When an overload warning signal is detected, it provides a dual reminder through sound and light to ensure that the on-site operator can quickly detect the overload. To mitigate risks and allow for a buffer time for troubleshooting, coupled with tiered protection logic, the system avoids production losses caused by direct power outages. Control button 202 enables manual operations such as branch start / stop and quick parameter setting, balancing automatic protection with manual intervention to enhance the flexibility of equipment operation. The fan-shaped sliding cooperation between locking fins 301 and locking grooves 101 not only strengthens the stability of the cabinet door lock but also improves the cabinet's sealing performance, reducing the impact of external electromagnetic interference on the internal control unit. It also prevents damage to components caused by accidental opening of the cabinet door during transportation or use, further ensuring the safety and reliability of equipment operation.

[0021] The specific usage and function of this embodiment are as follows: When using this electrical automation control cabinet with overload protection, first connect the external wiring neatly through the wiring hole 102 at the bottom of the control cabinet 1. Ensure that the wiring is accurately aligned with the current monitoring coil 4 and temperature monitor 402 on the mounting base 401 when passing through the wiring hole 102. Close the control cabinet door 2 and achieve a sealed lock by engaging the locking fins 301 and locking groove 101 of the handle lock 3. The operator can use the control buttons 202 on the control cabinet door 2 to start / stop each branch and quickly set parameters. The operator can view the current value, temperature value, and operating status of the corresponding branch in real time through the digital display screen 501 of the central control unit 5. The transmission antenna 103 simultaneously uploads the equipment operating data and protection status remotely to the central control unit 5. The management terminal facilitates centralized monitoring. During operation, the current monitoring coil 4 and temperature monitor 402 continuously collect dual parameters and transmit them to the central control unit 5. When an overload warning signal is detected, the audible and visual alarm 201 triggers an audible and visual reminder. If an overload occurs in a single branch, the central control unit 5 drives the corresponding auxiliary circuit breaker 7 to precisely disconnect the faulty branch, ensuring the normal operation of non-faulty branches. If the overload is severe or spreads to the main circuit, the main circuit breaker 6 activates the ultimate protection to disconnect the main circuit, preventing the safety accident from escalating. After the fault is cleared, the corresponding branch can be quickly restarted via the reset button 502 of the central control unit 5, or a reset or parameter adjustment command can be sent via the remote terminal for convenient maintenance.

[0022] Example 2: The control cabinet 1 has strip-shaped heat dissipation grilles on both the left and right side walls, with dustproof nets fixedly installed inside the grilles. Two variable-speed cooling fans are symmetrically installed at the bottom of the rear inner wall of the control cabinet 1. The variable-speed cooling fans are electrically connected to the central control unit 5. Through the linkage design of the heat dissipation grilles and variable-speed cooling fans, "predictive heat dissipation" is achieved, which actively reduces the temperature of the lines and components in the early stage of overload risk, delays the escalation of overload, and provides a longer buffer time for fault diagnosis. The dustproof nets can prevent dust from entering the installation cavity through the heat dissipation grilles, taking into account both heat dissipation efficiency and component protection. Combined with the original sealing structure, it further improves the stability of the internal operating environment of the cabinet and reduces the probability of component aging and overload false triggering caused by high temperature.

Claims

1. An electrical automation control cabinet with overload protection function, characterized in that, It comprises a control cabinet body (1); an installation cavity is opened inside the control cabinet body (1), a control cabinet door (2) is hinged to the left side of the front side wall of the control cabinet body (1), a handle lock (3) is rotatably connected to the middle of the right side wall of the control cabinet door (2), current monitoring coils (4) are symmetrically installed on the inner wall of the lower side of the control cabinet body (1), a central control unit (5) is fixedly installed in the middle of the inner wall of the rear side of the control cabinet body (1), one main circuit breaker (6) and two auxiliary circuit breakers (7) are installed in a "pin-shaped" arrangement on the top of the inner wall of the rear side of the control cabinet body (1), and both the main circuit breaker (6) and the auxiliary circuit breakers (7) are electrically connected to the central control unit (5).

2. An electrical automation control cabinet with overload protection function according to claim 1, characterized in that, An arc-shaped locking groove (101) is opened in the middle of the front side of the right inner wall of the control cabinet body (1), two threading holes (102) are symmetrically opened on the bottom end surface of the control cabinet body (1), a transmission antenna (103) is fixedly installed in the middle of the top outer wall of the control cabinet body (1), and the transmission antenna (103) is electrically connected to the central control unit (5).

3. An electrical automation control cabinet with overload protection function according to claim 1, characterized in that, An audible and visual alarm (201) is fixedly installed in the middle of the top of the front side wall of the control cabinet door (2), the audible and visual alarm (201) is electrically connected to the central control unit (5), and control buttons (202) are installed at equal intervals on the bottom of the front side wall of the control cabinet door (2).

4. An electrical automation control cabinet with overload protection function according to claim 1, characterized in that, The bottoms of the two current monitoring coils (4) are both fixedly connected with installation seats (401), the bottoms of the installation seats (401) are fixedly installed on the upper side of the threading holes (102) opened on the control cabinet body (1), temperature monitors (402) facing the threading holes (102) are installed on the inner walls of the two installation seats (401), and the current monitoring coils (4) are electrically connected to the central control unit (5).

5. An electrical automation control cabinet with overload protection function according to claim 1, characterized in that, Two digital display screens (501) are symmetrically installed on the front side wall of the central control unit (5), and a reset button (502) is correspondingly installed on the lower side of each digital display screen (501) on the front side wall of the central control unit (5).

6. An electrical automation control cabinet with overload protection function according to claim 1, characterized in that, A locking fin (301) is fixedly installed at the rear end of the handle lock (3), and the locking fin (301), which is fan-shaped, is slidably connected in the locking groove (101) opened at the middle of the front side of the right inner wall of the control cabinet body (1).

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