Outdoor power distribution cabinet capable of preventing water and soil from settling and inclining

Abstract

The outdoor power distribution cabinet comprises a cabinet body and a four-direction leveling seat, the bottom of the cabinet body is detachably connected with the four-direction leveling seat, and the cabinet body serves as a main body bearing structure of the power distribution cabinet; the four-direction leveling seat is fixed on the ground through a temporarily mounted horizontal reference frame and is used for realizing horizontal adjustment and support of the cabinet body; the power distribution cabinet comprises a cabinet body, four-direction leveling seats arranged in the cabinet body, a horizontal reference frame arranged between the four-direction leveling seats and used for assisting the four-direction leveling seats to complete levelness calibration, and an air treatment assembly fixedly connected to one side of the interior of the cabinet body, and according to the power distribution cabinet, through cooperation of the four-direction leveling seats and the horizontal reference frame, rapid and accurate installation and dynamic self-adaptive leveling are achieved; a pure mechanical monitoring system composed of the gravity standard device and the sleeve can visually judge the inclination direction of the cabinet body, the inner base is driven to ascend and descend through the spiral transmission structure, four-direction independent leveling is achieved, the problem that single adjustment is limited in traditional rigid connection is solved, and it is ensured that the cabinet body is always in a horizontal state.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the technical field of power distribution cabinet, in particular to an outdoor power distribution cabinet capable of preventing soil settlement and inclination. BACKGROUND

[0002] The outdoor power distribution cabinet is a device for distributing and controlling electric power, mainly including a cabinet body, electrical elements and other parts, which is used to distribute the electric energy of the power supply to various electric devices or lines, and to protect, control and monitor the circuit.

[0003] According to the power industry standard, the power distribution cabinet needs to have a certain anti-inclination ability to ensure the safety and stability of power distribution. However, the traditional power distribution cabinet is fixed in structure, and the inclination of the cabinet body after the foundation settlement easily leads to the displacement of the installation position of the internal electrical elements, or the uneven force on the line connection, resulting in poor contact, virtual connection, short circuit, open circuit or abnormal heating, and even fire in severe cases. In addition, long-term inclination also easily leads to deformation of the cabinet metal frame, cracking of the weld, damage to the overall sealing, further invasion of rainwater and dust, acceleration of equipment aging. With the acceleration of urbanization, the outdoor power distribution cabinet plays a vital role in the power system. The present application is proposed to solve the stability problem of the traditional power distribution cabinet in complex environment, so as to improve the reliability of the power distribution system. SUMMARY

[0004] The technical solution of the present application aims to solve the technical problem that the existing technical solution is too single, mainly providing an outdoor power distribution cabinet capable of preventing soil settlement and inclination, to solve the technical problem that the traditional fixed power distribution cabinet has an integral structure, and when the foundation settlement occurs, the installation position of the internal electrical elements is displaced due to unilateral inclination, and the line connection is unevenly stressed, directly causing poor contact and electrical faults.

[0005] The technical solution adopted by the present application to solve the above technical problems is as follows: An outdoor power distribution cabinet capable of preventing soil settlement and inclination, comprising a cabinet body and a four-way leveling seat, wherein the cabinet body is detachably connected with the four-way leveling seat at the bottom, serving as the main bearing structure of the power distribution cabinet.

[0006] The four-way leveling seat is fixed to the ground through a temporarily installed horizontal reference frame, and is used to realize the horizontal adjustment and support of the cabinet body.

[0007] The horizontal reference frame is arranged between the four-way leveling seats, and is used to assist the four-way leveling seats to complete the horizontal degree calibration.

[0008] The air treatment assembly is fixedly connected to one side of the interior of the cabinet body, and is responsible for treating the air entering the cabinet body.

[0009] The air tank is arranged above the air treatment assembly, and is used to store the treated air.

[0010] The mounting bracket is slidably connected to the other side of the cabinet interior, serving as a mounting carrier for electrical components.

[0011] The air intake is located on one side of the cabinet and is used to introduce outside air.

[0012] The exhaust vent is located on the other side of the cabinet and is used to exhaust internal air.

[0013] Insect-proof board, threaded onto the inner wall of the exhaust pipe, is used to prevent insects from entering the cabinet.

[0014] An air filter, threaded onto the inner wall of the air inlet pipe, is used to filter the air entering the cabinet.

[0015] The gravity reference device is fixed to the bottom of the cabinet by a steel wire rope at the top, serving as a reference component for determining the tilt of the cabinet.

[0016] The sleeve is fixed to the bottom of the cabinet and fitted onto the outside of the gravity reference device, providing a monitoring and protection space for the gravity reference device.

[0017] Furthermore, the interior of the cabinet is divided into a main chamber and a secondary chamber by a welded partition. The partition has two openings that connect the main and secondary chambers, with the air inlet located on one side of the secondary chamber and the exhaust outlet located on one side of the main chamber. The exhaust outlet is higher than the air inlet.

[0018] Furthermore, the air handling unit and the air tank are both located in the secondary cavity of the cabinet. The air handling unit includes an air pump, a compressed air oil-water separator, and a gas-water separator. The input end of the air pump is connected to the air inlet through a pipe, and the output end is connected to the inlet of the compressed air oil-water separator through a pipe. The outlet of the compressed air oil-water separator is connected to the inlet of the gas-water separator. At the same time, the cabinet is provided with a drain pipe port for connecting the compressed air oil-water separator and the gas-water separator at the corresponding air handling unit positions.

[0019] Furthermore, two gas cylinders are distributed vertically, and the gas cylinders are detachably installed in the secondary cavity of the cabinet via a ring-shaped fixing frame. The fixing frame consists of two halves connected by hinges to form an opening and closing structure. The lower gas cylinder has an outlet and an inlet at the top and bottom, respectively, while the upper gas cylinder only has an outlet at the top. The inlet of the lower gas cylinder is connected to the outlet of the air-water separator in the air handling unit, and the outlets of both gas cylinders are connected to the pipe openings on the surface of the cabinet partition via pipes.

[0020] Furthermore, the cabinet has an inlet and an outlet in the main cavity, and the inlet and outlet are distributed along the vertical side wall of the main cavity of the cabinet. The outlet is located behind the mounting bracket, and the inlet is located below the exhaust port. The inlet and outlet are 30° inclined arc-shaped slots, with the lower end facing the outside of the cabinet.

[0021] Furthermore, the main cavity of the cabinet is provided with a heat dissipation assembly, which includes a first fan, a second fan, and heat dissipation fins. The first fan is fixed to the bottom wall of the main cavity, and the heat dissipation fins are fixed to the top wall of the main cavity. The first fan and the heat dissipation fins are located below and above the mounting bracket, respectively, and the second fan and the exhaust port are located at both ends of the heat dissipation fins.

[0022] Furthermore, the top of the inner base is fixedly connected to connector A, and connector A is rotatably connected to connector B via a pivot pin. Connector B is fixed along the four corners of the bottom of the cabinet.

[0023] Furthermore, the four-way leveling base includes an outer base and an inner base. The inner base slides within corresponding grooves on the inner wall of the outer base via sliders at both ends of its outer wall. A worm gear is rotatably connected to the inner base via a drive mechanism. A worm wheel meshes with one side of the worm gear. A trapezoidal lead screw rotates inside the outer base, with its bottom end penetrating the axis of the worm wheel and forming an integral connection. The inner wall of the inner base is threadedly connected to the outer wall of the trapezoidal lead screw. A T-shaped limiting slider is provided on the outer wall of the outer base. The T-shaped limiting slider slides into a through slot on the outer wall of the horizontal reference frame. A slot for mounting a bubble level is provided at the center point of the top of the horizontal reference frame.

[0024] Furthermore, the gravity reference device has a conical structure that is narrower at the top and wider at the bottom. Both the gravity reference device and the sleeve are located at the center point of the bottom of the cabinet. The inner wall of the sleeve has a ring of red markings in the shape of a cross. Eight optical sensor chips are evenly distributed in a ring on the same horizontal plane of the inner wall of the sleeve. The sensor shell is embedded in the inner wall of the sleeve, the detection probe is flush with the inner wall, and the laser emission direction is perpendicular to the radial direction of the sleeve and points to the central axis. The outer wall of the gravity reference device has a ring of reflective strip at the height of the sensor. The sensor is electrically connected to the PLC control system inside the cabinet through wires.

[0025] Furthermore, a first filter element is threaded to one end of the inner wall of the air filter, and a second filter element is threaded to the other end of the inner wall of the air filter. Both the first and second filter elements have two-finger knobs for threaded disassembly from the air filter. Both the first and second filter elements are two-half structures that can be detachably connected by screws. The surface of the first filter element is covered with a grid-like metal grid plate, and the surface of the second filter element is covered with a microporous structure.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This equipment uses a combination of a gravity reference device and a cross-shaped laser rangefinder. When the cabinet is tilted, the gravity reference device remains vertical due to its suspension, and the sensor can capture its horizontal offset relative to the sleeve in real time, accurately locate the tilt direction, and link the servo motor of the four-way leveling seat to drive the trapezoidal screw to automatically raise and lower until the sensor detects that the distance has returned to the preset reference value and is consistent. No continuous manual intervention is required throughout the process. From the initial horizontal reference frame assisted calibration to the dynamic leveling during operation, it forms a full-cycle automated control, effectively solving the problems of lag and low precision of traditional manual leveling.

[0027] 2. This device physically isolates the main and auxiliary chambers, separating the electrical components from the air handling components to avoid vibration and heat conduction. The air undergoes multi-stage treatment to ensure that the air entering the main chamber is dry and pure. At the same time, the heat dissipation adopts a composite mode of "bottom air intake forced convection + top air exhaust thermal pressure effect", which, together with the heat dissipation fins, increases the heat exchange area and improves efficiency compared to traditional natural convection. Furthermore, unlike traditional cable outlets, the 30° inclined cable inlet and outlet, along with the insect-proof plate, more effectively prevents water, dust, and insects from entering, solving the problem of insufficient traditional protection from multiple dimensions.

[0028] 3. The precise leveling function in this equipment ensures that the cabinet remains level at all times, preventing internal cables from being stretched or airflow channels from deforming due to tilting. This provides a stable physical foundation for the environmental protection system. Simultaneously, the stable temperature environment ensures the effectiveness of internal electronic components, maintaining stable signal transmission and execution response from sensors and the leveling system, further ensuring the reliability of overall detection and control. Through the mutual support of the leveling function and the environmental protection system, the equipment not only extends its trouble-free operation cycle in complex outdoor environments such as rainy, dusty, and ground-settled conditions, but also reduces maintenance frequency.

[0029] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the four-way leveling seat and the horizontal reference frame of the present invention; Figure 3 This is a schematic diagram of the four-way leveling seat structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the cabinet of the present invention; Figure 5 This is a partial rear view structural diagram of the cabinet of the present invention; Figure 6 This is a schematic diagram of the heat dissipation component distribution structure of the present invention; Figure 7 For the present invention Figure 4Enlarged schematic diagram of the structure at point A in the middle; Figure 8 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B.

[0031] Numbering on the map: 1. Cabinet; 2. Four-way leveling base; 201. Outer base; 202. Inner base; 203. Worm gear; 204. Worm wheel; 205. Trapezoidal lead screw; 206. Connector A; 207. Connector B; 3. Horizontal reference frame; 4. Air handling unit; 5. Air tank; 6. Mounting bracket; 7. Air inlet; 8. Exhaust outlet; 9. Cable inlet; 10. Cable outlet; 11. Insect-proof plate; 12. Air filter; 1201. First filter frame; 1202. Second filter frame; 13. Gravity reference device; 14. Sleeve; 15. Heat dissipation assembly. Detailed Implementation

[0032] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0034] Please refer to the appendix carefully. Figures 1-8 An outdoor power distribution cabinet that is resistant to soil settlement and tilting includes a cabinet body 1 and a four-way leveling seat 2. The bottom of the cabinet body 1 is detachably connected to the four-way leveling seat 2, serving as the main load-bearing structure of the power distribution cabinet.

[0035] The four-way leveling seat 2 is fixed to the ground by a temporary horizontal reference frame 3, and is used to achieve horizontal adjustment and support of the cabinet 1.

[0036] A horizontal reference frame 3 is placed between four-way leveling seats 2 to assist the four-way leveling seats 2 in completing the levelness calibration.

[0037] Air handling unit 4 is fixedly connected to one side inside cabinet 1 and is responsible for treating the air entering the cabinet.

[0038] Air tank 5, located above air handling unit 4, is used to store treated air.

[0039] Mounting bracket 6 is slidably connected to the other side of the inside of cabinet 1, serving as a mounting carrier for electrical components.

[0040] Air inlet 7 is located on one side of cabinet 1 and is used to introduce external air.

[0041] Exhaust vent 8 is located on the other side of cabinet 1 and is used for exhausting internal air.

[0042] Insect-proof board 11 is threadedly connected to the inner wall of the exhaust port 8 and is used to prevent insects from entering the cabinet 1.

[0043] Air filter 12 is threaded to the inner wall of the air inlet 7 and is used to filter the air entering the cabinet 1.

[0044] The gravity reference device 13 is fixed to the bottom of the cabinet 1 by a steel wire rope at the top, serving as a reference component for judging the tilt of the cabinet 1.

[0045] Sleeve 14 is fixed to the bottom of cabinet 1 and fitted onto the outside of gravity reference device 13, providing monitoring and protection space for gravity reference device 13.

[0046] The four-way leveling seat 2 includes an outer base 201 and an inner base 202. The inner base 202 slides in the corresponding grooves opened on the inner wall of the outer base 201 via sliders provided at both ends of its outer wall. The outer base 201 is rotatably connected to a worm gear 203 via a drive mechanism. A worm wheel 204 is engaged on one side of the worm gear 203. The outer base 201 is internally connected to a trapezoidal lead screw 205. The bottom shaft of the trapezoidal lead screw 205 passes through the axis of the worm wheel 204 and forms an integral connection with it.

[0047] One end of the inner wall of the air filter 12 is threadedly connected to a first filter element 1201, and the other end of the inner wall of the air filter 12 is threadedly connected to a second filter element 1202.

[0048] In this embodiment, as Figure 4 and Figure 6 As shown, the interior of cabinet 1 is divided into a main chamber and a secondary chamber by a welded partition. The partition has two openings that connect the main and secondary chambers, with the air inlet 7 located on one side of the secondary chamber and the exhaust port 8 located on one side of the main chamber. The exhaust port 8 is higher than the air inlet 7.

[0049] With the above structure, the interior of the cabinet 1 is divided into a main cavity and a secondary cavity by a partition. The main cavity is used to install electrical components such as circuit breakers and contactors, while the secondary cavity houses air handling components 4 such as air pumps and air tanks 5. This achieves physical isolation and prevents vibration and heat generated during air handling from affecting the normal operation of electrical components, thereby improving the overall safety and stability of the distribution cabinet. The metal insect-proof plate 11 with external threaded connection to the exhaust port 8 has a surface mesh hole structure that can ensure smooth air discharge and effectively prevent insects, birds, etc. from entering the interior of the cabinet 1.

[0050] In this embodiment, as Figure 4 and Figure 6 As shown, the air handling unit 4 and the air tank 5 are both located in the secondary cavity of the cabinet 1. The air handling unit 4 includes an air pump, a compressed air oil-water separator, and a gas-water separator. The input end of the air pump is connected to the air inlet 7 through a pipe, and the output end is connected to the inlet of the compressed air oil-water separator through a pipe. The outlet of the compressed air oil-water separator is connected to the inlet of the gas-water separator. At the same time, the cabinet 1 is provided with a drain pipe port for connecting the compressed air oil-water separator and the gas-water separator at the corresponding position of the air handling unit 4.

[0051] With the above structure, the air drawn in from the outside is pressurized by the air pump, and the compressed air oil-water separator separates the liquid oil droplets. The air-water separator further adsorbs moisture, and the drain pipe can discharge these separated oily and dirty water in a timely manner, avoiding the accumulation of oil droplets and condensate in the separator and ensuring the dryness and purity of the air.

[0052] In this embodiment, as Figure 4 As shown, two gas tanks 5 are arranged vertically, and the gas tanks 5 are detachably installed in the secondary cavity of the cabinet 1 by means of a ring-shaped fixing bracket. The fixing bracket consists of two halves connected by hinges to form an upper and lower opening and closing structure. The lower gas tank 5 has an outlet and an inlet at the top and bottom respectively, while the upper gas tank 5 has an outlet only at the top. The inlet of the lower gas tank 5 is connected to the outlet of the air-water separator in the air handling assembly 4. The outlets of both gas tanks 5 are connected to the pipe openings on the surface of the partition of the cabinet 1 through pipes.

[0053] With the above structure, the mounting bracket for fixing the gas tank 5 can be installed and removed by quick-release bolts with wings. Only the upper part of the mounting bracket needs to be opened to access the gas tank 5. The lower gas tank 5 serves as the main gas tank 5, and the upper gas tank 5 serves as the backup gas tank 5. When the outlet pressure sensor of the main gas tank 5 detects that the pressure is lower than 0.1MPa, the PLC control system automatically opens the solenoid check valve for switching the gas tank 5, enabling the upper backup gas tank 5 to supply air. Alternatively, when the air handling unit 4 malfunctions, causing the lower main gas tank 5 to be unable to supply air, the upper backup gas tank 5 can be activated.

[0054] In this embodiment, as Figure 5 As shown, the cabinet 1 has an inlet 9 and an outlet 10 in the main cavity, and the inlet 9 and outlet 10 are distributed along the vertical side wall of the main cavity of the cabinet 1. The outlet 10 is located behind the mounting bracket 6, and the inlet 9 is located below the exhaust port 8. The inlet 9 and outlet 10 are inclined at 30° and form an arc-shaped groove, with the lower end facing the outside of the cabinet 1.

[0055] With the above structure, the inlet 9 and outlet 10 adopt a 30° structural shape, which makes it difficult for rainwater or splashed water from the outside to flow back into the cabinet 1, avoiding electrical short circuits, component corrosion and other faults caused by water and dust intrusion, and ensuring the long-term stable operation of the distribution cabinet.

[0056] In this embodiment, as Figure 4 and Figure 6 As shown, a heat dissipation assembly 15 is provided in the main cavity of the cabinet 1. The heat dissipation assembly 15 includes a first fan, a second fan and heat dissipation fins. The first fan is fixed to the bottom wall of the main cavity, and the heat dissipation fins are fixed to the top wall of the main cavity. The first fan and the heat dissipation fins are located below and above the mounting bracket 6, respectively, and the second fan and the exhaust port 8 are located at both ends of the heat dissipation fins.

[0057] With the above structure, the first fan is fixed to the bottom wall of the main cavity, blowing cold air directly onto the electrical components on the mounting bracket 6, forcing the cold air to exchange heat with the heating elements, and quickly removing heat. After the hot air rises, the heat dissipation fins located on the top wall of the main cavity increase the heat exchange area. Together with the second fans at both ends and the exhaust port 8, when the one-way valve of the rear exhaust port 8 is opened, the hot air can be accelerated out of the cabinet 1. This forced convection of "bottom air inlet and top air outlet" can effectively improve the heat dissipation efficiency compared with natural convection.

[0058] In this embodiment, as Figure 3 As shown, the top of the inner base 202 is fixedly connected to connector A 206, and connector A 206 is rotatably connected to connector B 207 via a shaft pin. Connector B 207 is fixed along the four corners of the bottom of the cabinet 1. Cable trays are provided at the corresponding four-way leveling seat 2 installation positions on the bottom of the cabinet 1, so that the four-way leveling seat 2 can be electrically connected to the control body of the cabinet 1 in the future.

[0059] Through the above structure, connector A 206 and connector B 207 allow the cabinet 1 to rotate flexibly around the pivot pin during the leveling process, enabling each of the four-way leveling seats 2 to operate independently. During individual adjustments, the cabinet 1 will not be restricted by rigid constraints. The cable tray at the bottom of the cabinet 1 provides a dedicated channel for the electrical connection between the four-way leveling seat 2 and the control body of the cabinet 1, ensuring the normal use of the four-way leveling seat 2 in the future.

[0060] In this embodiment, as Figure 2 and Figure 3As shown, the four-way leveling base 2 includes an outer base 201 and an inner base 202. The inner base 202 slides in the corresponding grooves opened on the inner wall of the outer base 201 via sliders set at both ends of its outer wall. The outer base 201 is rotatably connected to a worm gear 203 through a drive mechanism. A worm wheel 204 meshes with one side of the worm gear 203. A trapezoidal lead screw 205 rotates inside the outer base 201. The bottom shaft of the trapezoidal lead screw 205 passes through the axis of the worm wheel 204 and forms an integral connection with it. The inner wall of the inner base 202 is threadedly connected to the outer wall of the trapezoidal lead screw 205. A T-shaped limiting slider is set on the outer wall of the outer base 201. The T-shaped limiting slider forms a sliding fit with the through slot opened on the outer wall of the horizontal reference frame 3. A slot for installing a bubble level is opened at the top center point of the horizontal reference frame 3.

[0061] With the above structure, the T-shaped limiting slider on the outer wall of the outer base 201 slides and engages with the through slot of the horizontal reference frame 3. Without the need for complicated measurement and calibration processes, the construction personnel only need to place the horizontal reference frame 3 in the installation position, and then assemble the four-way leveling seat 2 through the sliding structure to complete the initial positioning. In addition, the bubble level on the top of the horizontal reference frame 3 monitors the status of the four-way leveling seat 2 in real time during the horizontal installation process, ensuring the consistency of the burial depth of the ground bolt. This ensures that the levelness error of the final cabinet 1 is controlled within a very small range.

[0062] In this embodiment, as Figure 4 and Figure 8 As shown, the gravity reference device 13 has a conical structure that is narrower at the top and wider at the bottom. Both the gravity reference device 13 and the sleeve 14 are located at the center point of the bottom of the cabinet 1. The inner wall of the sleeve 14 has a red cross-shaped marking pattern distributed in a ring. Eight optical sensor chips (VL53L0X) are evenly distributed in a ring on the same horizontal plane of the inner wall of the sleeve 14. The sensor housing is embedded in the inner wall of the sleeve 14, and the detection probe is flush with the inner wall. The laser emission direction is perpendicular to the radial direction of the sleeve 14 and points to the central axis. The outer wall of the gravity reference device 13 has a ring of reflective strips at the height of the sensor. The sensor is electrically connected to the PLC control system inside the cabinet 1 through wires.

[0063] With the above structure, the sleeve 14 is made of transparent polycarbonate, and the gravity reference device 13 is made of stainless steel. The gravity reference device 13 determines the tilt direction of the cabinet 1 by sensing changes in the direction of gravity. The inner wall of the sleeve 14 has a pre-set groove that is consistent with the direction of the cross-shaped marking. The end of the groove is sealed with sealant. The miniature laser ranging wire is arranged along the groove. The cross-shaped laser ranging sensor can accurately locate the tilt direction of the cabinet 1 and trigger the corresponding alarm. When leveling, the judgment is based on the fact that the distance between each sensor returns to the preset reference value and is consistent. This realizes the automatic shutdown of the leveling motor, improves the leveling accuracy and efficiency, reduces manual intervention, enhances the dynamic response to foundation settlement, adapts to the outdoor environment, and ensures the stable operation of the power distribution cabinet.

[0064] In this embodiment, as Figure 7 As shown, a first filter element 1201 is threaded to one end of the inner wall of the air filter 12, and a second filter element 1202 is threaded to the other end of the inner wall of the air filter 12. Both the first filter element 1201 and the second filter element 1202 have two-finger knobs for threaded disassembly from the air filter 12. Both the first filter element 1201 and the second filter element 1202 are two-half structures that can be detachably connected by screws. The surface of the first filter element 1201 is distributed with a grid-like metal grid plate, and the surface of the second filter element 1202 is distributed with a microporous structure.

[0065] With the above structure, the first filter holder 1201 and the second filter holder 1202 are both installed in the corresponding air filter 12 by threaded connection. The air filter 12 is threaded to the air inlet 7, which improves the convenience of regularly replacing the internal filter material. The first filter holder 1201 is filled with filter cotton core, and the second filter holder 1202 is filled with activated carbon. The surface of the first filter holder 1201 is distributed with a grid-like metal grid plate with a grid aperture of 3-5mm. This effectively intercepts larger impurities such as sand and leaves while ensuring smooth airflow and reducing air intake resistance. The surface of the second filter holder 1202 has a microporous structure with a micropore aperture controlled at 0.1-0.3mm. Combined with the activated carbon filled inside, it can effectively remove oil mist, organic gases and odors from the air by utilizing the adsorption properties of activated carbon. The pre-treatment by the air filter 12 lays the foundation for the efficient operation of the air handling unit 4, thereby reducing damage to the internal equipment of the air handling unit 4 and improving maintenance efficiency.

[0066] The specific operating procedure of this utility is as follows: First, when using the distribution cabinet, fix the circuit breaker, contactor and other electrical components to the corresponding positions of the mounting bracket 6, and fix the cables with the help of the cable tie device. Pass the cables through the 30° inclined inlet 9 at the bottom of the cabinet 1, and fill the gaps with fireproof putty to ensure sealing. When moving to the installation point, the four-way leveling seat 2 can be placed on the precast concrete base with the help of the horizontal reference frame 3. It is fixed by the anchor bolts and the reserved installation holes of the four-way leveling seat 2. The bubble level on the surface of the horizontal reference frame 3 can ensure that the anchor bolts are buried at the same depth when the four-way leveling seat 2 is fixed by the anchor bolts, and ensure that the top surface of the four-way leveling seat 2 is at the same level after installation.

[0067] After the four-way leveling seat 2 is installed, lift it upwards using the top handle of the horizontal reference frame 3 to disengage the T-shaped slider of the four-way leveling seat 2 from the corresponding slot of the horizontal reference frame 3.

[0068] Using lifting or jacking equipment, temporarily support cabinet 1 above four-way leveling seat 2, and complete the installation of connector A 206 and connector B 207 at the bottom of cabinet. Anti-loosening nuts or cotter pins should be added to the axle pins to prevent them from falling off, and ensure the stable connection between cabinet 1 and four-way leveling seat 2.

[0069] When routine maintenance personnel inspect the power distribution cabinet, they can simultaneously observe whether the steel wire rope of the gravity reference device 13 is aligned with the center of the sleeve 14 as a reference for judging the level of the cabinet 1; at the same time, the laser rangefinders distributed in a star pattern on the inner wall of the sleeve 14 will also monitor the distance to the gravity reference device 13 in real time.

[0070] Under normal circumstances, the steel wire rope hangs vertically and coincides with the cross lines. The detection distance of all 8 sensors is equal to the preset reference value (e.g., 10mm) and remains consistent. The sensors transmit a "normal signal" to the PLC. If cabinet 1 tilts, the gravity reference device 13 deviates to the corresponding end, and the detection distance of the sensor in the corresponding direction shortens (less than the preset value). After the signal is transmitted to the PLC, the system immediately locates the tilt direction, triggers the alarm indicator light on the corresponding corner of the cabinet 1 surface to light up and triggers an audible and visual alarm. At the same time, the tilt information is uploaded to the background monitoring system through the communication module to realize automatic alarm.

[0071] If the wire rope deviates or the sensor triggers an alarm, it indicates that cabinet 1 is tilted. The power supply inside the cabinet is turned on, and the PLC automatically starts the servo motor of the four-way leveling seat 2 at the corresponding offset point (or it can be manually started by the maintenance personnel) according to the tilt direction signal fed back by the sensor. This drives the worm gear 203 to rotate, which in turn drives the trapezoidal screw 205 to rotate through the worm wheel 204. The inner base 202 will then perform a spiral lifting and lowering motion along the axial direction of the trapezoidal screw 205.

[0072] During the leveling process, the sensors provide real-time feedback to the PLC on the changes in distance from the gravity reference device 13. When the distance detected by each sensor returns to the preset reference value and remains consistent, the PLC determines that the cabinet 1 has accurately returned to the horizontal state and immediately sends a command to cut off the power supply of the leveling motor. At this time, the power-off brake at the output end of the servo motor driving the worm gear 203 causes the brake pads to lock the shaft through spring pressure, thereby completing the leveling.

[0073] Because a pressure sensor is installed in the main cavity, it can monitor the changes in air pressure in the main cavity in real time. A pressure sensor is also installed at the outlet of the auxiliary cavity gas tank 5 to monitor the output pressure of gas tank 5 and ensure stable air supply. In addition, all the pipe ports of the cabinet 1 are equipped with solenoid valves. At the same time, temperature sensors are also installed near the mounting bracket 6 inside the main cavity and on the surface of the heat dissipation fins 15 to collect the temperature data in the main cavity in real time. When the pressure sensor at the top of the main cavity continuously collects the air pressure data in the main cavity and transmits the data to the PLC control system of the control cabinet inside the cabinet 1, when the pressure sensor detects that the pressure in the main cavity is <50Pa, it indicates that the air pressure in the main cavity is insufficient, and there may be a leak or insufficient air supply. When the pressure is >100Pa, it means that the pressure in the main cavity is too high, and there is a risk of deformation or even explosion of the cabinet 1.

[0074] When the main chamber pressure is below 50Pa, the PLC control system immediately sends a command to start the air pump. The air pump starts working, drawing in external air through the air inlet 7. The air then passes through the air filter 12 for preliminary purification. The metal grid plate in the first filter frame 1201 first intercepts large particles such as sand and leaves. The built-in filter cotton core further filters dust larger than 5μm, achieving preliminary purification. Then, the air enters the second filter frame 1202, where the powerful adsorption capacity of activated carbon removes oil mist, organic gases, and odors. The air that has undergone preliminary purification is pressurized by the air pump to 0.3-0.5MPa and input into the compressed air oil-water separator. Centrifugal force separates ≥95% of liquid oil droplets. The oil droplets are periodically discharged through the drain valve corresponding to the bottom of the cabinet 1. After that, the air enters the air-water separator, where the filter element adsorbs moisture, lowering the pressure dew point. The condensate is discharged from the drain port corresponding to the bottom of the cabinet 1. The dry air is first stored in the lower air tank 5. When air pressure needs to be replenished, the solenoid valve opens, and the gas in the air tank 5 is stably transported to the main chamber through the pipeline.

[0075] The upper gas tank 5 is a backup. When the pressure sensor at the outlet of the lower gas tank 5 is lower than 0.1MPa, the PLC control system will switch the gas supply line to the upper backup gas tank 5 and send a yellow alarm signal to the panel indicator light in the main control area through the surface of the cabinet 1, prompting maintenance personnel to replenish the backup gas tank 5.

[0076] When the pressure in the main chamber exceeds 100Pa, the PLC control system receives a signal from the pressure sensor and sends an energizing command to the solenoid check valve at the exhaust port 8. The solenoid coil inside the solenoid check valve generates magnetic force, which overcomes the spring resistance and drives the valve core to open. At this time, the high-pressure air in the main chamber is quickly discharged. As the pressure drops, when the pressure sensor reports that the pressure has dropped to near the normal range, the PLC controls the solenoid check valve to de-energize, and the valve core resets and closes under the action of the spring to prevent air backflow. At the same time, the pressure sensor monitors the air supply pressure in real time, and the PLC adjusts the air supply from the air tank 5 according to the feedback signal.

[0077] Since the exhaust port 8 is higher than the air inlet 7, the hot air in the main cavity rises naturally due to the thermal pressure effect. When releasing the high-pressure gas inside, the heat is simultaneously discharged from the top exhaust port 8. Combined with the subsequent air replenishment function, the cold air outside enters from the air inlet 7, forming natural convection. This natural convection can play a certain role in heat dissipation when the temperature difference is small.

[0078] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An outdoor electrical distribution cabinet resistant to soil settlement and tilting, comprising a cabinet body (1) and a four-way leveling base (2), characterized in that: The cabinet (1) is detachably connected to the bottom of the four-way leveling seat (2) and serves as the main load-bearing structure of the power distribution cabinet; The four-way leveling seat (2) is fixed to the ground by a temporary horizontal reference frame (3) to achieve horizontal adjustment and support of the cabinet (1); A horizontal reference frame (3) is placed between four-way leveling seats (2) to assist the four-way leveling seats (2) in completing the levelness calibration; An air handling unit (4) is fixedly connected to one side inside the cabinet (1) and is responsible for handling the air entering the cabinet; An air tank (5) is located above the air handling unit (4) and is used to store the treated air; Mounting bracket (6) is slidably connected to the other side of the cabinet (1) and serves as a mounting carrier for electrical components; An air inlet (7) is located on one side of the cabinet (1) for introducing external air; An exhaust port (8) is located on the other side of the cabinet (1) for the exhaust of internal air; Insect-proof board (11), threadedly connected to the inner wall of the exhaust port (8), is used to block insects from entering the cabinet (1). An air filter (12) is threaded to the inner wall of the air inlet (7) and is used to filter the air entering the cabinet (1); The gravity reference device (13) is fixed to the bottom of the cabinet (1) by a steel wire rope at the top, serving as a reference component for judging the tilt of the cabinet (1); The sleeve (14) is fixed to the bottom of the cabinet (1) and fitted onto the outside of the gravity reference device (13) to provide monitoring and protection space for the gravity reference device (13).

2. The outdoor power distribution cabinet for soil and water settlement tilting according to claim 1, characterized in that: The interior of the cabinet (1) is divided into a main cavity and a secondary cavity by a welded partition. The partition has two pipe openings that connect the main cavity and the secondary cavity. The air inlet (7) is located on one side of the secondary cavity, and the exhaust port (8) is located on one side of the main cavity. The exhaust port (8) is higher than the air inlet (7).

3. The outdoor power distribution cabinet for soil and water settlement tilting according to claim 1, characterized in that: The air handling unit (4) and the air tank (5) are both located in the secondary cavity of the cabinet (1). The air handling unit (4) includes an air pump, a compressed air oil-water separator and a gas-water separator. The input end of the air pump is connected to the air inlet (7) through a pipe, and the output end is connected to the inlet of the compressed air oil-water separator through a pipe. The outlet of the compressed air oil-water separator is connected to the inlet of the gas-water separator. At the same time, the cabinet (1) is provided with a drain pipe for connecting the compressed air oil-water separator and the gas-water separator at the corresponding position of the air handling unit (4).

4. The outdoor power distribution cabinet for preventing soil settlement and tilting according to claim 1, characterized in that: Two gas tanks (5) are arranged vertically and vertically, and the gas tanks (5) are detachably installed in the secondary cavity of the cabinet (1) by means of a ring fixing frame. The fixing frame consists of two halves connected by a hinge to form an opening and closing structure. The lower gas tank (5) has an outlet and an inlet at the top and bottom respectively, while the upper gas tank (5) has an outlet only at the top. The inlet of the lower gas tank (5) is connected to the outlet of the gas-water separator in the air handling assembly (4). The outlets of both gas tanks (5) are connected to the pipe openings on the surface of the partition of the cabinet (1) through pipes.

5. An outdoor power distribution cabinet resistant to soil settlement and tilting as described in claim 1, characterized in that: The cabinet (1) has an inlet (9) and an outlet (10) in the main cavity. The inlet (9) and outlet (10) are distributed along the vertical side wall of the main cavity of the cabinet (1). The outlet (10) is located behind the mounting bracket (6), and the inlet (9) is located below the exhaust port (8). The inlet (9) and outlet (10) are 30° inclined in an arc-shaped groove, with the lower end facing the outside of the cabinet (1).

6. The outdoor power distribution cabinet for soil settlement and tilting as described in claim 1, characterized in that: The cabinet (1) is provided with a heat dissipation assembly (15) in its main cavity. The heat dissipation assembly (15) includes a first fan, a second fan and heat dissipation fins. The first fan is fixed to the bottom wall of the main cavity and the heat dissipation fins are fixed to the top wall of the main cavity. The first fan and the heat dissipation fins are located below and above the mounting bracket (6) respectively, and the second fan and the exhaust port (8) are located at both ends of the heat dissipation fins.

7. An outdoor power distribution cabinet resistant to soil settlement and tilting according to claim 1, characterized in that: The top of the inner base (202) is fixedly connected to a connector A (206), and connector A (206) is rotatably connected to connector B (207) via a pivot pin. Connector B (207) is fixed along the four corners of the bottom of the cabinet (1).

8. An outdoor power distribution cabinet resistant to soil settlement and tilting according to claim 1, characterized in that: The four-way leveling seat (2) includes an outer base (201) and an inner base (202). The inner base (202) slides in a groove corresponding to the inner wall of the outer base (201) via sliders at both ends of its outer wall. A worm gear (203) is rotatably connected inside the outer base (201) via a drive mechanism. A worm wheel (204) meshes with one side of the worm gear (203). A trapezoidal lead screw (205) rotates inside the outer base (201). The bottom shaft of the trapezoidal lead screw (205) passes through the axis of the worm gear (204) and forms an integral connection with it; the inner wall of the inner base (202) is threadedly connected to the outer wall of the trapezoidal lead screw (205); the outer wall of the outer base (201) is provided with a T-shaped limiting slider; the T-shaped limiting slider and the through slot opened on the outer wall of the horizontal reference frame (3) form a sliding fit; the top center point of the horizontal reference frame (3) is provided with a slot for installing a bubble level.

9. An outdoor power distribution cabinet resistant to soil settlement and tilting according to claim 1, characterized in that: The gravity reference device (13) has a tapered structure that is narrow at the top and wide at the bottom. Both the gravity reference device (13) and the sleeve (14) are located at the center point of the bottom of the cabinet (1). The inner wall of the sleeve (14) is decorated with a red cross-shaped marking. Eight optical sensor chips are evenly distributed in a ring on the same horizontal plane of the inner wall of the sleeve (14). The sensor shell is embedded in the inner wall of the sleeve (14). The detection probe is flush with the inner wall. The laser emission direction is perpendicular to the radial direction of the sleeve (14) and points to the central axis. The tapered outer wall of the gravity reference device (13) is provided with a ring of reflective strips at the height of the sensor. The sensor is electrically connected to the PLC control system inside the cabinet (1) through wires.

10. An outdoor power distribution cabinet resistant to soil settlement and tilting according to claim 1, characterized in that: The air filter (12) has a first filter frame (1201) threadedly connected to one end of its inner wall and a second filter frame (1202) threadedly connected to the other end of its inner wall. Both the first filter frame (1201) and the second filter frame (1202) have a two-finger knob for threaded disassembly from the air filter (12). Both the first filter frame (1201) and the second filter frame (1202) are two-half structures that can be detachably connected by screws. The surface of the first filter frame (1201) is covered with a grid-like metal grid plate, and the surface of the second filter frame (1202) is covered with a microporous structure.

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