A ring main unit with ventilation capacity detection

Abstract

The utility model relates to the field of ring main unit, concretely is a kind of ring main unit with ventilation capacity detection, including ring main unit main body, the inside of ring main unit main body is provided with heat dissipation device, the outer wall of ring main unit main body is close to the place of bottom and is provided with the air inlet of being linked with the air inlet of heat dissipation device intercommunication, the back of ring main unit main body is provided with air outlet, and ring main unit main body front is equipped with the detection mechanism corresponding with the height of air outlet;In the utility model, detection mechanism not only can make up the hysteresis and limitation of existing temperature detection means, realize the real-time monitoring of the operating state of heat dissipation system, but also can find fan fault or passage blockage hidden danger in advance, to improve the operation reliability and security of ring main unit, reduce maintenance cost, prolong equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of ring main units, specifically a ring main unit with ventilation capacity detection. Background Technology

[0002] A ring main unit is an electrical device consisting of a set of power transmission and distribution equipment housed in a metal or non-metal insulated cabinet or assembled into a modular ring main unit. It typically integrates electrical components such as load switches, circuit breakers, and instrument transformers. These components continuously generate heat during operation. If heat cannot be dissipated in time, the temperature inside the cabinet will rise, leading to aging of insulation materials, deterioration of component performance, or even failure.

[0003] Publication number CN222422874U discloses a ventilated and heat-dissipating ring main unit, including a protective cabinet. The protective cabinet has multiple storage spaces inside, with ventilation partitions in front of each storage space. Each storage space has a plug-in slot at its bottom for detachable connection to electrical installation equipment. The protective cabinet has ventilation holes at its top, with an exhaust device connected to the top of the ventilation holes. A heat dissipation and rainproof cover is detachably connected to the top of the exhaust device, and a movable heat dissipation device is located at the bottom of the heat dissipation and rainproof cover. Hinged doors are connected to both sides of the protective cabinet, with air intake and filtering devices at the bottom of the doors. This design addresses the technical problem of current ring main units being divided into indoor and outdoor uses, requiring different ring main units for different application scenarios, resulting in high production costs and high power requirements for individual ring main units. In these scenarios, high heat is required, but current ring main units cannot quickly dissipate heat in high-temperature areas.

[0004] In existing technologies, ring main units (RMMs) generate a large amount of heat during operation due to the internal electrical components. Therefore, they typically require dedicated heat dissipation devices and reasonable heat dissipation channels to ensure the internal temperature remains within a safe range. However, these devices are prone to wear and tear and malfunction over long-term operation. Fans may fail due to bearing wear, dust and impurities may obstruct airflow, and foreign objects may block the heat dissipation channels. These problems directly reduce heat dissipation efficiency, preventing timely heat dissipation from the RMM. Existing monitoring methods mostly rely on temperature sensors to detect the internal ambient temperature. While this method can trigger alarms when temperatures exceed limits, it has significant shortcomings: firstly, temperature changes are delayed, often only becoming apparent after the equipment has been in an inefficient heat dissipation state for an extended period; secondly, simple temperature detection cannot directly reflect the ventilation status of the heat dissipation channels, making it difficult to promptly identify whether the failure is due to a malfunctioning heat dissipation device (fan) or abnormal component overheating. Therefore, we propose a RMM with ventilation capacity detection capabilities. Utility Model Content

[0005] The purpose of this utility model is to provide a ring main unit with ventilation capacity detection to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a ring main unit with ventilation capacity detection includes a ring main unit body, a heat dissipation device is provided inside the ring main unit body, an air inlet connected to the air inlet of the heat dissipation device is provided near the bottom of the outer wall of the ring main unit body, an air outlet is provided on the back of the ring main unit body, and a detection mechanism corresponding to the height of the air outlet is provided on the front of the ring main unit body.

[0007] The testing mechanism includes a flow guide tube, which is fixedly installed on the outer wall of the main body of the ring main unit and one end of the flow guide tube is connected to the inside of the main body of the ring main unit. The other end of the flow guide tube is fixedly connected to a vertical pole, the top of the pole is threadedly connected to a top cover, and the outer wall of the pole is threadedly connected to a floating ring.

[0008] Furthermore: Several stacked blocks are inserted into the top of the floating ring, and corresponding inserts and slots are provided on the upper and lower surfaces of the stacked blocks, respectively.

[0009] Furthermore: The main body of the ring main unit has an equipment cavity inside. The inner walls on both sides of the equipment cavity are symmetrically fixed with baffles near the top. The connection between the air outlet and the baffle tube and the equipment cavity is located on the upper side of the baffle.

[0010] Furthermore: the bottom of the floating ring is provided with a flow channel, and the outer end of the floating ring is provided with a vertical through opening.

[0011] Furthermore: the outer wall of the float ring is equipped with a reflective or fluorescent coating.

[0012] Furthermore: the inner side of the float ring is provided with a round hole that matches the size of the upright, and both the round hole on the inner side of the float ring and the outer wall of the upright are smooth surfaces.

[0013] Furthermore: the diameter of the top cover is higher than the diameter of the inner circular hole of the floating ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the airflow from the guide tube can blow the floating ring along the upright. Under normal circumstances, during the daily operation of the fan, the floating ring should be located in the middle between the guide tube and the top cover, indicating stable ventilation capacity. When the fan malfunctions, the ventilation capacity is affected, and the height of the floating ring will also decrease. Conversely, when the temperature inside the equipment cavity is high and the fan is running at high power, the inspection personnel can also intuitively judge the temperature of the electrical components inside the equipment cavity as relatively high and dissipating heat by observing the height of the floating ring. The detection mechanism can not only make up for the lag and limitations of existing temperature detection methods and realize real-time monitoring of the operating status of the heat dissipation system, but also detect fan malfunctions or channel blockages in advance, thereby improving the operational reliability and safety of the ring main unit, reducing maintenance costs, and extending the service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic elevation view of a ring main unit with ventilation capacity detection according to the present invention;

[0017] Figure 2 This is a schematic diagram of the upper side of the internal equipment cavity of the main body of the central ring network cabinet of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of a portion of the image;

[0019] Figure 4 This is a bottom view of the bottom of the floating ring in this utility model.

[0020] In the diagram: 1. Ring main unit; 2. Air inlet; 3. Air outlet; 4. Detection mechanism; 5. Flow guide tube; 6. Upright pole; 7. Top cover; 8. Floating ring; 9. Stacked blocks; 10. Equipment cavity; 11. Flow guide plate; 12. Flow channel; 13. Opening. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 The figure shows a preferred embodiment of the present invention, a ring main unit with ventilation capacity detection, including a ring main unit body 1, a heat dissipation device is provided inside the ring main unit body 1, an air inlet 2 connected to the air inlet of the heat dissipation device is provided near the bottom of the outer wall of the ring main unit body 1, an air outlet 3 is provided on the back of the ring main unit body 1, and a detection mechanism 4 corresponding to the height of the air outlet 3 is provided on the front of the ring main unit body 1.

[0023] The testing mechanism 4 includes a flow guide tube 5, which is fixedly installed on the outer wall of the main body 1 of the ring network cabinet and one end of the flow guide tube 5 is connected to the inside of the main body 1 of the ring network cabinet. The other end of the flow guide tube 5 is fixedly connected to a vertical pole 6. The top of the pole 6 is threadedly connected to a top cover 7, and the outer wall of the pole 6 is threadedly connected to a floating ring 8.

[0024] Because the heat dissipation devices, i.e. individual fans, have different power levels between different ring main units 1, in order to prevent the floating ring 8 from being directly pushed to the bottom of the top cover 7 by the airflow of the high-power fan and making it impossible to observe the wind force fluctuation, several stacked blocks 9 are inserted into the top of the floating ring 8. The upper and lower surfaces of the stacked blocks 9 are respectively provided with corresponding inserts and slots. The stacked blocks 9 inserted into the floating ring 8 are used to increase the weight of the floating ring 8. The number can be adjusted as needed. After removing the top cover 7, the adjustment can be made. After the adjustment is completed, the top cover 7 is reinstalled.

[0025] The main body 1 of the ring main unit contains an equipment cavity 10. Baffles 11 are symmetrically fixed to the inner walls of both sides of the equipment cavity 10 near the top. The connections between the air outlet 3 and the guide tube 5 and the equipment cavity 10 are located on the upper side of the baffles 11. To prevent airflow turbulence after the installation of electrical equipment in the equipment cavity 10, which could lead to a decrease in air pressure at the guide tube 5, baffles 11 are installed to ensure relatively uniform air pressure before the airflow exits, thus maintaining a relatively balanced air pressure at the guide tube 5. It should be noted that... Figure 2 In the diagram, only the top portion of the device cavity 10 is shown; the bottom portion and internal electrical components are not shown.

[0026] Specifically, the bottom of the floating ring 8 is provided with a flow channel 12, and the outer end of the floating ring 8 is provided with a vertical through opening 13. The flow channel 12 is used to guide the floating ring 8 to rotate under the airflow blowing from the upper end of the guide tube 5, so that the floating ring 8 can be easily noticed during daily inspections. The opening 13 can also be used to tie a ribbon to the floating ring 8, making it more conspicuous.

[0027] In some embodiments, the outer wall of the ring 8 is provided with a reflective or fluorescent coating, making the ring 8 easy to spot in bright light or dim light.

[0028] Understandably, the inner side of the floating ring 8 is provided with a round hole that matches the size of the upright 6. Both the round hole on the inner side of the floating ring 8 and the outer wall of the upright 6 are smooth surfaces. The diameter of the top cover 7 is higher than the diameter of the round hole on the inner side of the floating ring 8, making the structure more stable.

[0029] In this embodiment, it should be noted that the guide tube 5 is L-shaped and hollow inside. The lower end of the upright 6 extends into the guide tube 5, and its diameter is lower than the inner wall diameter of the guide tube, so as not to affect the air flow. When the main body 1 of the ring network cabinet is running normally, the internal heat dissipation device, i.e., the fan, starts normally and draws air into the equipment cavity 10 from the air inlet 2. The airflow is relatively evenly pressurized before flowing out through the guide plate 11, so that the air pressure at the guide tube 5 is relatively balanced. The airflow flowing out from the guide tube 5 can blow the floating ring 8 along the upright 6. Under normal circumstances, when the fan is running normally, the floating ring 8 should be located in the middle between the guide tube 5 and the top cover 7, which means that the ventilation capacity is stable. When the fan fails, the ventilation capacity is affected, and the height of the floating ring 8 will also decrease. Conversely, when the temperature inside the equipment cavity 10 is high and the fan is running at high power, the inspection personnel can also intuitively judge that the temperature of the electrical components inside the equipment cavity 10 is relatively high and is dissipating heat by the height of the floating ring 8. The temperature inside the cabinet can be understood from a distance without retrieving the temperature sensor data.

[0030] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A ring main unit with ventilation capacity detection, comprising a ring main unit body (1), wherein a heat dissipation device is provided inside the ring main unit body (1), characterized in that: The outer wall of the ring main body (1) is provided with an air inlet (2) connected to the air inlet of the heat dissipation device near the bottom. The back of the ring main body (1) is provided with an air outlet (3). The front of the ring main body (1) is provided with a detection mechanism (4) corresponding to the height of the air outlet (3). The detection mechanism (4) includes a flow guide tube (5), which is fixedly installed on the outer wall of the main body (1) of the ring network cabinet and one end of the flow guide tube (5) is connected to the inside of the main body (1) of the ring network cabinet. The other end of the flow guide tube (5) is fixedly connected to a vertical pole (6). The top of the pole (6) is threadedly connected to a top cover (7), and the outer wall of the pole (6) is threadedly connected to a floating ring (8).

2. A ring main unit with ventilation capacity detection according to claim 1, characterized in that: The top of the floating ring (8) is connected to several stacked blocks (9), and the upper and lower surfaces of the stacked blocks (9) are respectively provided with corresponding inserts and slots.

3. A ring main unit with ventilation capacity detection according to claim 1, characterized in that: The main body (1) of the ring network cabinet has an equipment cavity (10) inside. The inner walls on both sides of the equipment cavity (10) are symmetrically fixed with guide plates (11) near the top. The connection between the air outlet (3) and the guide tube (5) and the equipment cavity (10) is located on the upper side of the guide plate (11).

4. A ring main unit with ventilation capacity detection according to claim 1, characterized in that: The bottom of the floating ring (8) is provided with a drainage groove (12), and the outer end of the floating ring (8) is provided with a vertical through opening (13).

5. A ring main unit with ventilation capacity detection according to claim 1, characterized in that: The outer wall of the floating ring (8) is provided with a reflective or fluorescent coating.

6. A ring main unit with ventilation capacity detection according to claim 1, characterized in that: The inner side of the floating ring (8) is provided with a round hole that matches the size of the upright (6). The round hole on the inner side of the floating ring (8) and the outer wall of the upright (6) are both smooth surfaces.

7. A ring main unit with ventilation capacity detection according to claim 1, characterized in that: The diameter of the top cover (7) is higher than the diameter of the inner circular hole of the floating ring (8).

Images