An automatic pressure relief power distribution cabinet
By introducing an automatic pressure relief structure into the distribution cabinet, the safety hazards of the distribution cabinet when the pressure exceeds the limit are solved, and the internal pressure is automatically regulated and safely released, ensuring the stable operation of the distribution cabinet.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG OVERSEAS CHINESE TECH CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-06-19
AI Technical Summary
Existing distribution cabinets are prone to failure when internal pressure exceeds limits, which may lead to circuit breaker overheating, mechanical deformation, insulation failure and electrical fire. Furthermore, local pressure anomalies may spread to the entire power distribution network. Current technology has not been able to effectively solve the problem of automatic pressure relief.
An automatic pressure relief distribution cabinet was designed, comprising a cabinet, a cover, electrical component modules, control component modules, a discharge structure, a sealing ring, a reinforced latch, and an automatic pressure relief structure. The automatic pressure relief structure discharges gas when the internal pressure is too high to maintain the pressure within a preset threshold range, thus ensuring safety.
Effectively maintain the internal pressure of the distribution cabinet within a safe range, prevent overheating, mechanical deformation and damage to the insulation medium, avoid electrical fires and regional power outages, and improve the operational safety of the distribution cabinet.
Smart Images
Figure CN224384831U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of power distribution cabinets, and in particular to an automatic pressure relief power distribution cabinet. Background Technology
[0002] A distribution cabinet is an electrical device in a power system used for power distribution, control, and protection. Its core function is to safely and reliably distribute electrical energy from the upstream power source to each power terminal, while monitoring and managing the circuit's operating status.
[0003] Specifically, a distribution cabinet, also known broadly as a distribution panel or distribution box, is an electrical device assembled from switching equipment, protective devices such as circuit breakers or fuses, measuring instruments such as voltmeters or ammeters, and auxiliary components such as terminals, according to a specific wiring scheme. Distribution cabinets typically exist in the form of enclosed or semi-enclosed metal cabinets, and can be used independently or as the final stage equipment in a power system, directly serving distributed or centralized electrical loads.
[0004] Currently, dust prevention measures include installing filters at the air inlet. However, while filters can remove most dust, a small amount still gets in. To address this, an electrostatic dust removal structure is typically installed at the air inlet, using electrostatic attraction to draw in dust from the air. Using electrostatics effectively reduces the amount of dust entering the cabinet. However, the amount of dust attracted accumulates over time, requiring regular cleaning; otherwise, dust will still enter, affecting the effectiveness of the electrostatic dust removal.
[0005] Based on this, Chinese patent CN111525403B discloses a sealed high and low voltage distribution cabinet, which includes a cabinet body. A cooling fan is installed on the top of the cabinet body. The cooling fan draws outside air into the mounting cavity inside the cabinet body and discharges it from the exhaust port at the bottom of the cabinet body. The cabinet body is provided with a cabinet door. A hollow silicone sealing ring is embedded on the side of the cabinet body facing the cabinet door. When the cabinet door is closed, the cabinet door contacts and seals with the slightly convex silicone sealing ring. The distribution cabinet disclosed in this patent not only has a very good dustproof effect, but also eliminates the need to solve the problem of dust collection. The collected dust is used to fill the hollow silicone sealing ring, increasing the solidity of the sealing ring and effectively preventing its thermal deformation in the later stage, thereby increasing the sealing effect and sealing time.
[0006] However, the aforementioned distribution cabinets still suffer from the technical problem of being prone to failure due to excessive internal pressure. Specifically, while existing technologies have proposed distribution cabinets with excellent sealing, in most application scenarios, overly sealed distribution cabinets are prone to abnormal internal pressure. For example, during operation, the internal pressure of the distribution cabinet may surge due to lightning strikes, operational overvoltages, or equipment failures; and overvoltage or short-circuit faults may cause electrical fires. More specifically, internal overvoltage or abnormal current in the distribution cabinet can cause overheating or mechanical deformation of core components such as circuit breakers and busbars; furthermore, it may damage their insulating medium, such as air or SF6 gas, leading to leakage or short circuits. Furthermore, if localized pressure anomalies are not addressed promptly, they may spread to the entire power distribution network. For example, if high-voltage distribution cabinets in substations are not equipped with automatic pressure relief, a single point of failure may cause a regional power outage. Utility Model Content
[0007] Therefore, it is necessary to provide an automatic pressure relief distribution cabinet to address the technical issue of how to improve the automatic pressure relief performance of the distribution cabinet.
[0008] An automatic pressure relief distribution cabinet includes: a housing, a cover, an electrical component module, a control component module, a discharge structure, a sealing ring, reinforcing latches, and an automatic pressure relief structure; one side of the housing is movably connected to one side of the cover, the electrical component module is disposed within the housing, and the control component module is disposed within the cover; the discharge structure is disposed at the lower part of the housing, and the sealing ring connects the housing and the cover; a plurality of reinforcing latches are evenly distributed on the outer side of the housing, and the reinforcing latches are movably connected to the cover; the automatic pressure relief structure is disposed at the top of the housing.
[0009] Furthermore, the automatic pressure relief structure includes a connecting pipe, a pressure relief cap, a pressure relief sealing ring, a pressure relief opening and closing cover, an elastic connection structure, a first flange structure, a second flange structure, and a connecting part.
[0010] Furthermore, the pressure relief cap is disposed above the connecting pipe, and the pressure relief sealing ring is connected to the upper end of the connecting pipe below the pressure relief cap.
[0011] Furthermore, the pressure relief opening and closing cap is movably disposed between the pressure relief sealing ring and the pressure relief cap body, and the elastic connection structure connects the pressure relief cap body and the pressure relief opening and closing cap body respectively.
[0012] Furthermore, the first flange structure is disposed at the lower end of the connecting pipe, and the first flange structure is connected to the housing.
[0013] Furthermore, the second flange structure is disposed above the connecting pipe relative to the first flange structure, and the connecting part connects the pressure relief cap body and the second flange structure respectively.
[0014] Furthermore, the elastic connection structure includes a piston rod, a connecting cylinder, and a spring.
[0015] Furthermore, the piston rod is connected to the pressure relief opening and closing cover, the piston rod is movably connected to the connecting cylinder, and the connecting cylinder is connected below the pressure relief cap; the spring is connected between the pressure relief cap and the pressure relief opening and closing cover, and the spring is movably sleeved between the piston rod and the connecting cylinder.
[0016] Furthermore, the enhanced latch is provided with a latch seat, a lever handle, an elastic pull ring, and a locking pin seat.
[0017] Furthermore, the locking seat is connected to the side of the box body, and one end of the lever is movably connected to one end of the locking seat; one end of the elastic pull ring is movably connected to the lever, and the other end of the elastic pull ring is movably connected to the cover; the locking pin seat is disposed on the locking seat, and the locking pin seat is movably connected to the lever.
[0018] In summary, the automatic pressure relief distribution cabinet of this utility model comprises a cabinet, a cover, an electrical component module, a control component module, a discharge structure, a sealing ring, reinforcing latches, and an automatic pressure relief structure; one side of the cabinet is movably connected to one side of the cover, the electrical component module is disposed within the cabinet, and the control component module is disposed within the cover; the discharge structure is disposed at the lower part of the cabinet, and the sealing ring is connected between the cabinet and the cover; a plurality of reinforcing latches are evenly distributed on the outer side of the cabinet, and the reinforcing latches are movably connected to the cover; the automatic pressure relief structure is disposed at the top of the cabinet. The automatic pressure-relieving structure is located at the bottom of the enclosure. After the enclosure and the cover are sealed together by a strong bonding force, when the internal pressure of the enclosure becomes too high, the gas causing the pressure change can be discharged from the automatic pressure-relieving structure to the outside of the enclosure. Thus, the internal pressure of the enclosure can always be kept within a preset pressure threshold range, ensuring the safety of the power distribution cabinet during operation. Therefore, the automatic pressure-relieving power distribution cabinet of this utility model solves the technical problem of how to improve the automatic pressure relief performance of the power distribution cabinet. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of an automatic pressure relief distribution cabinet according to the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of an automatic pressure relief distribution cabinet of this utility model from another direction;
[0021] Figure 3 This is a schematic diagram of a portion of the automatic pressure relief distribution cabinet of this utility model;
[0022] Figure 4 This is a cross-sectional structural diagram of a portion of an automatic pressure relief distribution cabinet according to this utility model. Detailed Implementation
[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0029] Please refer to the following: Figures 1 to 4 This utility model discloses an automatic pressure relief distribution cabinet comprising: a housing 1, a cover 2, an electrical component module 3, a control component module 4, a discharge structure 5, a sealing ring 6, reinforcing latches 7, and an automatic pressure relief structure 8; one side of the housing 1 is movably connected to one side of the cover 2; the electrical component module 3 is disposed within the housing 1, and the control component module 4 is disposed within the cover 2; the discharge structure 5 is disposed at the lower part of the housing 1; the sealing ring 6 is connected between the housing 1 and the cover 2; a plurality of reinforcing latches 7 are evenly distributed on the outer side of the housing 1, and the reinforcing latches 7 are movably connected to the cover 2; the automatic pressure relief structure 8 is disposed at the top of the housing 1.
[0030] Specifically, in the overall design of the automatic pressure relief distribution cabinet of this utility model, one side of the cover 2 is hinged to one side of the enclosure 1, so that the operator can open or close the cover 2 and the enclosure 1 by pulling the cover 2. The electrical component module 3 is disposed in the inner cavity of the enclosure 1, and the control component module 4 is disposed in the cover 2, and the control component module 4 is electrically connected to the electrical component module 3; the operator can control the electrical component module 3 by manipulating the control component module 4. The outgoing structure 5 is used to connect external cables connected to the electrical component module 3 and the control component module 4 into the enclosure 1. The sealing ring 6 is used to enhance the sealing connection between the enclosure 1 and the cover 2 after they are closed; the reinforcing latch 7 is used to enhance the connection force between the enclosure 1 and the cover 2 after they are closed, so that the sealing ring 6 disposed between the enclosure 1 and the cover 2 is squeezed to achieve a sealing connection. The automatic pressure-relieving structure 8 is located at the bottom of the enclosure 1. After the enclosure 1 and the cover 2 are sealed together by a strong bonding force, when the internal pressure of the enclosure 1 becomes too high, the gas causing the pressure change can be discharged from the automatic pressure-relieving structure 8 to the outside of the enclosure 1. Thus, the internal pressure of the enclosure 1 can always be kept within a preset pressure threshold range, ensuring the safety of the power distribution cabinet during operation. Therefore, the automatic pressure-relieving power distribution cabinet of this utility model solves the technical problem of how to improve the automatic pressure-relieving performance of the power distribution cabinet.
[0031] Furthermore, the automatic pressure relief structure 8 includes a connecting pipe 801, a pressure relief cap 802, a pressure relief sealing ring 803, a pressure relief opening and closing cover 804, an elastic connecting structure 805, a first flange structure 806, a second flange structure 807, and a connecting part 808; the pressure relief cap 802 is disposed above the connecting pipe 801, and the pressure relief sealing ring 803 is connected to the upper end of the connecting pipe 801 below the pressure relief cap 802; the pressure relief opening and closing cover 804 is movably disposed on the pressure relief sealing ring. Between 803 and the pressure relief cap 802, the elastic connection structure 805 connects the pressure relief cap 802 and the pressure relief opening and closing cover 804 respectively; the first flange structure 806 is disposed at the lower end of the connecting pipe 801 and is connected to the housing 1; the second flange structure 807 is disposed at the upper part of the connecting pipe 801 relative to the first flange structure 806, and the connecting part 808 connects the pressure relief cap 802 and the second flange structure 807 respectively.
[0032] Specifically, the elastic connection structure 805 includes a piston rod 805a, a connecting cylinder 805b, and a spring 805c; the piston rod 805a is connected to the pressure relief opening and closing cover 804, the piston rod 805a and the connecting cylinder 805b are movably connected relative to each other, and the connecting cylinder 805b is connected below the pressure relief cap 802; the spring 805c is connected between the pressure relief cap 802 and the pressure relief opening and closing cover 804, and the spring 805c is movably sleeved between the piston rod 805a and the connecting cylinder 805b.
[0033] Specifically, during the operation of the automatic pressure relief distribution cabinet of this utility model, if the gas pressure inside the cabinet 1 suddenly increases, the automatic pressure relief structure 8 connects the connecting pipe 801 to the cabinet 1 via the first flange structure 806, thereby connecting the connecting pipe 801 to the inner cavity of the cabinet 1. Consequently, the gas pressure inside the cabinet will push the pressure relief opening and closing cover 804 upwards. At this time, the pressure relief opening and closing cover 804 pushes the piston rod 805a upwards relative to the connecting cylinder 805b, thereby compressing the spring 805c. Furthermore, the pressure relief opening and closing cover 804 releases the pressure on the pressure relief sealing ring 803, creating a leaky gap at the upper opening of the connecting pipe 801. This allows the high-pressure gas inside the cabinet 1 to overflow from between the connecting pipe 801 and the pressure relief cap 802 along the cover gap. When the air pressure inside the housing 1 drops back to the preset threshold range due to gas overflow, the force pushing the pressure relief opening and closing cover 804 decreases accordingly, causing the spring 805c to return to its original deformation. This causes the piston rod 805a to move away from the connecting cylinder 805b under the action of the elastic force, thereby allowing the pressure relief opening and closing cover 804 to re-cover and connect to the pressure relief sealing ring 803, and re-close the upper end of the connecting pipe 801.
[0034] Furthermore, the electrical component module 3 is a conventional electrical function module of a distribution cabinet, which may include a power supply module, protection module, control module, measurement and monitoring module, etc. Specifically, the power supply module provides a stable power supply to the distribution cabinet, realizing dual power supply switching and power distribution; its components include dual power automatic transfer switches, circuit breakers, input protection circuits, such as filters and voltage stabilizers. The protection module prevents damage to equipment and lines in case of electrical faults such as overload, short circuit, and leakage; its components include fuses, circuit breakers, current transformers, and protective relays; for example, air switches and leakage current switches are commonly used in distribution boxes to achieve multi-level protection. The control module realizes circuit on / off control, equipment start / stop, and automated operation; its components include contactors, intermediate relays, time relays, buttons, and intelligent control units, such as PLCs. The distribution cabinet can also integrate intelligent fire evacuation systems, electrical fire monitoring modules, etc. The measurement and monitoring module is used to monitor electrical parameters in real time, such as voltage, current, and power factor, as well as environmental parameters, such as temperature and humidity. It consists of a meter, sensors, and a data acquisition unit. The intelligent distribution box transmits data to a cloud platform via communication modules, such as Wi-Fi or 4G / 5G, supporting remote monitoring.
[0035] Furthermore, the control element module 4 includes a display unit 401, an emergency stop unit 402, and a knob input unit 403. The display unit 401, the emergency stop unit 402, and the knob input unit 403 are respectively disposed on the cover 2, and are electrically connected to the electrical element module 3. Specifically, the display unit 401 displays various parameters of the power distribution cabinet's operating status; the emergency stop unit 402 can manually cut off power to each module of the power distribution cabinet in case of abnormal conditions; and the knob input unit 403 controls various operating parameters of the power distribution cabinet.
[0036] Furthermore, the reinforced latch 7 is provided with a latch seat 701, a lever handle 702, an elastic pull ring 703, and a locking pin seat 704; the latch seat 701 is connected to the side of the housing 1, one end of the lever handle 702 is movably connected to one end of the latch seat 701; one end of the elastic pull ring 703 is movably connected to the lever handle 702, and the other end of the elastic pull ring 703 is movably connected to the cover 2; the locking pin seat 704 is disposed on the latch seat 701, and the locking pin seat 704 is movably connected to the lever handle 702.
[0037] Specifically, one end of the lever 702 is hinged to one end of the locking seat 701, allowing the lever 702 to swing along the locking seat 701. The elastic pull ring 703 can be a ring structure made of elastic steel wire. When one end of the ring is connected to the pre-set protrusion on the side of the cover 2, the operator can lever the lever 702 to make the elastic pull ring 703 tightly fasten to the side of the cover 2. When the lever 702 is pulled back to engage with the locking pin 704, the elastic pull ring 703 can tighten, thus tightly locking the cover 2 to the side of the box 1. Afterward, the operator can use the locking pin structure to lock the lever 702 to the locking pin seat 704, thereby locking the box 1 and the cover 2 and preventing unauthorized personnel from opening the box 1.
[0038] In summary, the automatic pressure relief distribution cabinet of this utility model is provided with a box body 1, a cover body 2, an electrical component module 3, a control component module 4, a discharge structure 5, a sealing ring 6, a reinforcing latch 7, and an automatic pressure relief structure 8. One side of the box body 1 is movably connected to one side of the cover body 2. The electrical component module 3 is disposed in the box body 1, and the control component module 4 is disposed in the cover body 2. The discharge structure 5 is disposed in the lower part of the box body 1, and the sealing ring 6 is connected between the box body 1 and the cover body 2. A plurality of reinforcing latches 7 are evenly distributed on the outer side of the box body 1, and the reinforcing latches 7 are movably connected to the cover body 2. The automatic pressure relief structure 8 is disposed on the top of the box body 1. The automatic pressure-relieving structure 8 is located at the bottom of the enclosure 1. After the enclosure 1 and the cover 2 are sealed together by a strong bonding force, when the internal pressure of the enclosure 1 becomes too high, the gas causing the pressure change can be discharged from the automatic pressure-relieving structure 8 to the outside of the enclosure 1. Thus, the internal pressure of the enclosure 1 can always be kept within a preset pressure threshold range, ensuring the safety of the power distribution cabinet during operation. Therefore, the automatic pressure-relieving power distribution cabinet of this utility model solves the technical problem of how to improve the automatic pressure-relieving performance of the power distribution cabinet.
[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An automatic pressure relief distribution cabinet, characterized in that, It includes: a housing (1), a cover (2), an electrical component module (3), a control component module (4), a delivery structure (5), a sealing ring (6), a reinforced latch (7), and an automatic pressure relief structure (8); one side of the housing (1) is movably connected to one side of the cover (2), the electrical component module (3) is disposed in the housing (1), and the control component module (4) is disposed in the cover (2); the delivery structure (5) is disposed at the lower part of the housing (1), and the sealing ring (6) is connected between the housing (1) and the cover. Between the bodies (2); a plurality of the reinforcing buckles (7) are evenly distributed on the outer side of the box body (1), and the reinforcing buckles (7) are movably connected to the cover body (2); the automatic pressure relief structure (8) is disposed on the top of the box body (1); the automatic pressure relief structure (8) has a connecting pipe (801), a pressure relief cap (802), a pressure relief sealing ring (803), a pressure relief opening and closing cover (804), an elastic connection structure (805), a first flange structure (806), a second flange structure (807), and a connecting part (808).
2. The automatic pressure relief distribution cabinet according to claim 1, characterized in that: The pressure relief cap (802) is disposed above the connecting pipe (801), and the pressure relief sealing ring (803) is connected to the upper end of the connecting pipe (801) below the pressure relief cap (802).
3. An automatic pressure relief distribution cabinet according to claim 2, characterized in that: The pressure relief opening and closing cover (804) is movably disposed between the pressure relief sealing ring (803) and the pressure relief cap (802), and the elastic connection structure (805) connects the pressure relief cap (802) and the pressure relief opening and closing cover (804) respectively.
4. An automatic pressure relief distribution cabinet according to claim 3, characterized in that: The first flange structure (806) is disposed at the lower end of the connecting pipe (801) and is connected to the housing (1).
5. An automatic pressure relief distribution cabinet according to claim 4, characterized in that: The second flange structure (807) is disposed on the upper part of the connecting pipe (801) relative to the first flange structure (806), and the connecting part (808) connects the pressure relief cap (802) and the second flange structure (807) respectively.
6. An automatic pressure relief distribution cabinet according to claim 5, characterized in that: The elastic connection structure (805) has a piston rod (805a), a connecting cylinder (805b), and a spring (805c).
7. An automatic pressure relief distribution cabinet according to claim 6, characterized in that: The piston rod (805a) is connected to the pressure relief opening and closing cover (804), and the piston rod (805a) is movably connected to the connecting cylinder (805b), which is connected below the pressure relief cap (802). The spring (805c) is connected between the pressure relief cap (802) and the pressure relief opening and closing cover (804), and is movably sleeved between the piston rod (805a) and the connecting cylinder (805b).
8. An automatic pressure relief distribution cabinet according to claim 7, characterized in that: The enhanced latch (7) is provided with a latch seat (701), a lever handle (702), an elastic pull ring (703), and a locking pin seat (704).
9. An automatic pressure relief distribution cabinet according to claim 8, characterized in that: The locking seat (701) is connected to the side of the box body (1), and one end of the lever (702) is movably connected to one end of the locking seat (701); one end of the elastic pull ring (703) is movably connected to the lever (702), and the other end of the elastic pull ring (703) is movably connected to the cover (2); the locking pin seat (704) is disposed on the locking seat (701), and the locking pin seat (704) is movably connected to the lever (702).