Anti-condensation ring main unit
By introducing a condensation collection mechanism and an airflow control mechanism into the ring main unit, combined with temperature regulation, the problem of condensation collection and discharge in the ring main unit is solved, achieving a highly efficient and energy-saving anti-condensation effect and improving the system's intelligence and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-04-10
AI Technical Summary
Existing ring main unit anti-condensation technology cannot effectively collect and discharge condensate, and lacks differentiated control of humidity and temperature inside the unit, resulting in unstable anti-condensation effect and high energy consumption.
It employs a condensation collection mechanism, an airflow control mechanism, and a temperature regulation mechanism, including a water collection tank, a heat exchange diversion column, a fan, a main heating tube bundle, a dual-channel distribution component, and a temperature control actuator, to achieve active collection and efficient discharge of condensate, precise temperature and humidity regulation, and intelligent control.
It achieves active collection and efficient discharge of condensate, precise directional temperature and humidity control, and energy-saving anti-condensation effect, thereby improving the stability and intelligence level of system operation.
Smart Images
Figure CN121840384A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of ring main unit, in particular to a ring main unit capable of preventing condensation. BACKGROUND
[0002] Condensation phenomenon is one of the main threats to the long-term stable operation of power equipment ring main unit in a humid environment. The water droplets formed by condensation may cause the insulation performance of internal electrical components to decrease, metal parts to rust, and even short circuit faults, which seriously endanger the reliability of power supply. Existing condensation prevention technologies mostly rely on passive ventilation, general heating or adsorption materials, and their ability to cope with high humidity environments and severe temperature changes is often insufficient. These methods are difficult to achieve active collection and efficient discharge of condensation water, and lack differentiated and precise regulation of humidity and temperature in different areas of the cabinet.
[0003] Traditional ring main unit condensation prevention measures usually have the disadvantages of single response mode, high energy consumption and limited effect. Common methods such as installing ordinary heaters can only raise the temperature in the cabinet as a whole, and cannot effectively address the cold wall areas where condensation is prone to occur, and may cause energy waste and exacerbate temperature unevenness in the cabinet. Although simple ventilation design can promote air flow, it may directly introduce external humid air, which may even exacerbate the risk of condensation under certain conditions. In addition, most solutions lack effective collection and guided discharge mechanisms for condensed water, which tends to accumulate at the bottom of the cabinet or on the surface of components, and cannot fundamentally eliminate water hazards. At the same time, traditional control methods have low intelligence, and cannot dynamically and predictively intervene according to the actual formation conditions of condensation (such as wall temperature and dew point temperature difference), resulting in unstable condensation prevention effect. SUMMARY
[0004] The technical problem to be solved by the present application is to provide a ring main unit capable of preventing condensation, in view of the above-mentioned defects in the prior art.
[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a ring main unit capable of preventing condensation to solve the problems raised in the above background.
[0006] To solve the above technical problems, the present application adopts the following technical solutions: A ring main unit capable of preventing condensation, comprising: a cabinet body, further comprising: a condensation collection mechanism, the condensation collection mechanism comprising a water collecting tank and a heat exchange drainage column, the water collecting tank being provided on the inner wall of the cabinet body, the upper end of the heat exchange drainage column being in communication with the water collecting tank, and the lower end of the heat exchange drainage column penetrating through the bottom plate of the cabinet body, the structure of the heat exchange drainage column inside the cabinet body being provided with an outer heat exchange structure; An air flow regulating mechanism comprises a fan, a main heating pipe bundle and a double-flow channel distribution assembly, the main heating pipe bundle is arranged on an air outlet path of the fan, and the double-flow channel distribution assembly is arranged downstream of the main heating pipe bundle; The double-flow channel distribution assembly has a first directional nozzle and a second directional nozzle, the air supply direction of the first directional nozzle is towards the inner wall region of the cabinet above the water collecting tank, and the air supply direction of the second directional nozzle is towards the outer heat exchange structure. A temperature regulating mechanism comprises an auxiliary heating assembly and a temperature control execution mechanism, the auxiliary heating assembly is arranged at the outer heat exchange structure, the temperature control execution mechanism comprises a temperature sensing element and a transmission rod, the temperature sensing element is arranged in the water collecting tank, one end of the transmission rod is connected with the temperature sensing element, and the other end is connected with a switch. The switch is electrically connected with the auxiliary heating assembly and can be driven by the transmission rod to be closed or disconnected.
[0007] Preferably, the slot of the water collecting tank is provided with a condensate water flow guide edge bent towards the inside of the cabinet, the bottom of the water collecting tank is provided with a downward protruding flow collecting hopper, the bottom of the flow collecting hopper is provided with a water outlet, and the upper end of the heat exchange flow guide column is in communication with the water outlet.
[0008] Preferably, the heat exchange flow guide column comprises a column body arranged vertically, a flow guide channel is formed in the column body, the outer heat exchange structure comprises a plurality of longitudinal heat dissipation fins arranged around the column body, and the outer wall of the column body is provided with an annular clamping groove for positioning the longitudinal heat dissipation fins.
[0009] Preferably, the surfaces of the plurality of longitudinal heat dissipation fins are provided with flow guide grooves. The end of the flow guide groove is provided with a pollution collection groove. The auxiliary heating assembly is installed between the plurality of longitudinal heat dissipation fins.
[0010] Preferably, the double-flow channel distribution assembly comprises a distribution cavity in communication with the main heating pipe bundle, a rotatable flow distribution plate is arranged in the distribution cavity, and the distribution cavity is divided into a first flow guide channel and a second flow guide channel by the flow distribution plate.
[0011] Preferably, the first flow guide channel is in communication with the first directional nozzle, the second flow guide channel is in communication with the second directional nozzle, and the flow distribution plate is connected with an adjusting rod extending to the outside of the double-flow channel distribution assembly.
[0012] Preferably, the lower part of the side wall of the cabinet is provided with an air inlet channel. A first air door is movably arranged in the air inlet channel. A flow guide cover is arranged at the inlet of the air inlet channel. The inner wall of the fairing is provided with a plurality of fairing ribs.
[0013] Preferably, the first air door is hinged in the air inlet channel; The first air door is provided with a counterweight; The air inlet channel is provided with an insect screen on the inner side of the first air door.
[0014] Preferably, the air flow regulating mechanism further comprises an air flow uniform distribution assembly arranged between the fan and the main heating tube bundle, the air flow uniform distribution assembly comprising a fixed frame and a plurality of layers of inclined fairing plates arranged in the fixed frame.
[0015] Preferably, the plurality of layers of fairing plates are arranged staggered with each other; Each layer of the fairing plates is provided with a plurality of flow guide holes; Adjacent two layers of the fairing plates are provided with a connecting support rod.
[0016] The above technical scheme is adopted in the present application, compared with the prior art, and has the following technical effects: 1. Active collection and efficient discharge of condensate water: through the combination of the water collecting groove and the heat exchange drainage column, a complete condensate water collection and discharge channel is constructed, which can actively and quickly guide the wall condensate water out of the cabinet to avoid accumulation.
[0017] 2. Precise directional temperature and humidity control: the double-flow distribution hot air system can differentially direct air supply to the cabinet wall area prone to condensation and key heat exchange components, achieving efficient drying and precise temperature control, energy saving and uniformity.
[0018] 3. Intelligent temperature response and linkage control: the temperature sensing element in the water collecting groove directly drives the auxiliary heating assembly, which can automatically start local heating when the condensation risk increases, realizing predictive intelligent condensation prevention based on physical signals.
[0019] 4. Optimize air flow organization and air inlet management: stabilize the air flow through the uniform distribution assembly, and use the air inlet channel with counterweight air door and insect screen to effectively prevent cold air from flowing back and foreign matter from entering while ensuring ventilation, improving system operation stability. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a schematic view of a condensation-proof ring main unit of the present application; Figure 2 is a schematic view of the cabinet body and air inlet channel of a condensation-proof ring main unit of the present application; Figure 3 is a schematic view of the column body and outer heat exchange structure of a condensation-proof ring main unit of the present application; Figure 4It is a condensation collection mechanism schematic diagram of the ring main unit of the anti-condensation ring main unit of the application; Figure 5 It is an air flow uniform distribution assembly schematic diagram of the ring main unit of the anti-condensation ring main unit of the application; Figure 6 It is a distribution cavity and adjusting rod schematic diagram of the ring main unit of the anti-condensation ring main unit of the application; Figure 7 It is an outer heat exchange structure and auxiliary heating assembly schematic diagram of the ring main unit of the anti-condensation ring main unit of the application; Figure 8 It is a condensation collection mechanism and temperature adjusting mechanism schematic diagram of the ring main unit of the anti-condensation ring main unit of the application; Figure 9 It is a cabinet and flow guide cover schematic diagram of the ring main unit of the anti-condensation ring main unit of the application; Figure 10 It is a main heating pipe bundle schematic diagram of the ring main unit of the anti-condensation ring main unit of the application.
[0021] Among them, each reference sign is: 1, cabinet; 101, air inlet channel; 1011, first air door; 1012, flow guide cover; 1013, flow guide rib; 1014, counterweight; 1015, insect screen; 2, condensation collection mechanism; 201, water collecting tank; 2011, condensate flow guide edge; 2012, flow collecting hopper; 2013, water outlet; 202, heat exchange drainage column; 2021, column body; 2022, drainage channel; 2023, annular clamping groove; 203, outer heat exchange structure; 2031, longitudinal heat dissipation fin; 2032, flow guide groove; 2033, pollution collecting tank; 3, air flow regulating mechanism; 301, fan; 302, main heating pipe bundle; 303, double-channel distribution assembly; 3031, first directional spout; 3032, second directional spout; 3033, distribution cavity; 3034, flow dividing plate; 3035, first flow guide channel; 3036, second flow guide channel; 3037, adjusting rod; 304, air flow uniform distribution assembly; 3041, fixed frame; 3042, flow guide grating; 3043, flow guide hole; 3044, connecting support rod; 4, temperature adjusting mechanism; 401, auxiliary heating assembly; 402, temperature control execution mechanism; 4021, temperature sensing element; 4022, transmission rod; 4023, switch. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments.
[0024] Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.
[0025] Example 1
[0026] As attached Figures 1 to 10 The illustrated anti-condensation ring network cabinet has a sealed box-type structure, with its inner wall surface treated with an anti-condensation coating. An air inlet channel 101 is located on the lower part of the side wall of the cabinet 1, and a flared air guide shroud 1012 is fixedly connected to the outer side of its inlet. The inner wall of the air guide shroud 1012 has multiple radially distributed air guide ribs 1013. A first air damper 1011 is hinged inside the air inlet channel 101, and a counterweight 1014 is fixed to the upper part of the panel facing the interior of the cabinet 1. An insect-proof net 1015 is installed on the inner wall of the air inlet channel 101 on the side of the first air damper 1011 facing the interior of the cabinet 1. When external air flows, the airflow is conditioned by the guide ribs 1013 of the air guide cover 1012 and enters the air intake channel 101, pushing the first air door 1011 to rotate around the hinge axis into the cabinet 1 to open; when the airflow stops or there is positive pressure inside the cabinet, the weight of the counterweight block 1014 causes the first air door 1011 to rotate in the opposite direction to close, and the insect net 1015 always keeps the passage covered.
[0027] The condensation collection mechanism 2 is fixedly installed on the inner wall of the cabinet 1. The water collection tank 201 is embedded in a pre-set groove in the inner wall of the cabinet 1, and its top edge is provided with an inwardly bent condensation guide edge 2011. The bottom center of the water collection tank 201 is connected to a downwardly protruding converging bucket 2012, and the bottom of the converging bucket 2012 is provided with a water outlet 2013. The upper end of the heat exchange diversion column 202 is connected to the water outlet 2013 through a sealing joint, and its lower end extends vertically through the bottom plate of the cabinet 1 to the outside. The heat exchange diversion column 202 includes an inner column 2021, and the center of the column 2021 is a diversion channel 2022 that runs through the top and bottom. The outer wall of the column 2021 is machined with multiple annular grooves 2023. The external heat exchange structure 203 is composed of multiple longitudinal heat dissipation fins 2031, and the base of each longitudinal heat dissipation fin 2031 is embedded in the corresponding annular groove 2023 and fixed by welding. The surface of the longitudinal heat dissipation fins 2031 is machined with longitudinally extending flow guide grooves 2032, and each flow guide groove 2032 has a sludge collection tank 2033 at its bottom. When the humid air inside the cabinet comes into contact with the low-temperature longitudinal heat dissipation fins 2031, the condensate flows down along the flow guide grooves 2032 and flows into the water collection tank 201, and finally enters the drainage channel 2022 through the confluence bucket 2012 and the outlet 2013 to be discharged outside the cabinet; impurities are intercepted in the sludge collection tank 2033.
[0028] The air flow regulating mechanism 3 is installed at the bottom of the cabinet 1 and is located at the inner side of the side wall where the air inlet channel 101 is located. The fan 301 is fixed by a support, and its air inlet is opposite to the air inlet channel 101, and its air outlet is upward. The air outlet of the fan 301 is connected with the air flow uniform distribution assembly 304, the main heating pipe bundle 302 and the double-flow channel distribution assembly 303 in sequence. The air flow uniform distribution assembly 304 comprises a fixed frame 3041 fixed in the air duct, and a plurality of layers of inclined flow guide grating plates 3042 are installed in the frame. The inclined directions of the adjacent layers of flow guide grating plates 3042 are staggered. A plurality of circular flow guide holes 3043 are formed in each layer of flow guide grating plates 3042, and the edges of the adjacent two layers of flow guide grating plates 3042 are fixed by vertical connecting support rods 3044. The main heating pipe bundle 302 is composed of a plurality of parallel U-shaped electric heating pipes and is installed above the air flow uniform distribution assembly 304. The distribution cavity 3033 of the double-flow channel distribution assembly 303 is installed above the main heating pipe bundle 302, and a rotatable flow distribution plate 3034 is installed in the distribution cavity 3033 through a vertical rotating shaft. The flow distribution plate 3034 divides the distribution cavity 3033 into a first flow channel 3035 and a second flow channel 3036 which are not connected with each other. The end of the first flow channel 3035 is connected with the first directional nozzle 3031, and the outlet direction of the first directional nozzle 3031 is inclined upward and is aligned with the area of the inner wall of the cabinet 1 above the water collecting groove 201. The end of the second flow channel 3036 is connected with the second directional nozzle 3032, and the outlet direction of the second directional nozzle 3032 is horizontal and is aligned with the array of the longitudinal heat dissipation fins 2031. One end of the rotating shaft of the flow distribution plate 3034 extends out of the shell of the distribution cavity 3033 and forms an external adjusting rod 3037. After the fan 301 is started, the air flow is cut and mixed by the plurality of layers of flow guide grating plates 3042 to become uniform, is heated by the main heating pipe bundle 302, and finally enters the distribution cavity 3033. By rotating the adjusting rod 3037 to drive the flow distribution plate 3034 to rotate, the area ratio of the two flow channels can be changed, so that the heated air flow is controlled to be blown out from the first directional nozzle 3031 and the second directional nozzle 3032 respectively.
[0029] The second directional nozzle 3032 is started only when the temperature of the outer heat exchange structure 203 is too low, which is detected by the temperature control execution mechanism 402, to avoid interfering with the normal condensation collection.
[0030] In the temperature adjusting mechanism 4, the auxiliary heating assembly 401 uses a tubular electric heating element which is directly inserted and fixed in the gap between the multiple longitudinal heat dissipation fins 2031. The temperature sensing element 4021 of the temperature control actuator 402 is a corrugated tube filled with temperature sensing medium, which is installed on the side wall inside the water collecting tank 201. The bottom of the temperature sensing element 4021 is directly connected with the upper end of the transmission rod 4022. The transmission rod 4022 vertically extends downward, passes through the sealing hole in the bottom of the water collecting tank 201, and the lower end is connected with or acts on the movable contact of the switch 4023. The static contact of the switch 4023 is in series with the power circuit of the auxiliary heating assembly 401. When the water temperature in the water collecting tank 201 is too low, the medium in the temperature sensing element 4021 contracts, drives the transmission rod 4022 to move downward, pushes the movable contact of the switch 4023 to contact and close the static contact, the circuit of the auxiliary heating assembly 401 is turned on to start heating the longitudinal heat dissipation fins 2031; when the water temperature rises, the temperature sensing element 4021 expands, drives the transmission rod 4022 to move upward, separates the movable contact of the switch 4023 from the static contact, the circuit is disconnected, and the auxiliary heating stops.
[0031] Embodiment Two
[0032] Based on the embodiment one, the scheme in embodiment one is further refined and introduced in detail in combination with the specific working mode as follows: Figures 1 to 10 As shown in the following description: Further, the condensation water guide edge 2011 is fixedly connected to the edge of the water collecting tank 201 and is bent inwardly to the cabinet 1 to form an arc-shaped guide surface, and the surface of the condensation water guide edge 2011 is polished to reduce water flow resistance; the bottom of the water collecting tank 201 is provided as an inclined plane toward the flow collector 2012, and the connection between the inclined plane and the flow collector 2012 is smoothly transitioned; the flow collector 2012 is integrally formed with the bottom of the water collecting tank 201 and protrudes downward to form a conical converging cavity, and the inner wall of the conical converging cavity is smooth to promote water flow acceleration; the water outlet 2013 is provided at the center of the bottom of the flow collector 2012, and an annular sealing groove is provided on the inner edge of the water outlet 2013 and a sealing ring is embedded to ensure the sealing with the heat exchange guide column 202; the upper end of the heat exchange guide column 202 is fixedly connected with the water outlet 2013 by flange connection, and the connection is fastened by lock bolts; when the condensation water forms on the inner wall of the cabinet 1, the water flows along the inner wall of the cabinet 1 to the condensation water guide edge 2011, the condensation water guide edge 2011 guides the water to the inside of the water collecting tank 201, the water is collected to the flow collector 2012 under the guidance of the inclined bottom of the water collecting tank 201, and the water is vertically flowed into the passage of the heat exchange guide column 202 from the water outlet 2013 after being accelerated by the conical converging cavity of the flow collector 2012.
[0033] Further, the column 2021 is vertically arranged, the column 2021 is made of metal material, the wall thickness of the column 2021 is uniform, the inner wall of the column 2021 is smoothly processed to form a drainage channel 2022, the drainage channel 2022 is a straight-through circular pipe-shaped channel penetrating through the upper and lower ends of the column 2021; an annular clamping groove 2023 is circumferentially arranged on the outer wall of the column 2021, the cross section of the annular clamping groove 2023 is rectangular, and the depth of the annular clamping groove 2023 matches the thickness of the base of the longitudinal heat dissipation fin 2031; a plurality of longitudinal heat dissipation fins 2031 are arranged at equal intervals around the column 2021, the base of each longitudinal heat dissipation fin 2031 is embedded in the corresponding annular clamping groove 2023 and is fixedly connected with the outer wall of the column 2021 by brazing, the longitudinal heat dissipation fin 2031 is made of high-thermal-conductivity metal plate material, and the surface of the longitudinal heat dissipation fin 2031 is sprayed with an anticorrosive coating; when water flows through the drainage channel 2022, the column 2021 transmits the cold energy carried by the water flow to the longitudinal heat dissipation fins 2031 fixedly connected to the outer wall thereof, and the plurality of longitudinal heat dissipation fins 2031 increase the contact area with the air in the cabinet 1 to accelerate heat exchange.
[0034] Further, the wide surface of each of the plurality of longitudinal heat dissipation fins 2031 is provided with a flow guide groove 2032, the flow guide groove 2032 extends along the length direction of the longitudinal heat dissipation fin 2031 and penetrates through the upper and lower ends thereof, and the cross section of the flow guide groove 2032 is arc-shaped to match the characteristics of the water flow; at the end of each flow guide groove 2032, i.e. the position close to the bottom edge of the longitudinal heat dissipation fin 2031, a dirt collecting groove 2033 is integrally formed, and the dirt collecting groove 2033 is a shallow groove structure with an opening upward; the auxiliary heating assembly 401 is fixedly installed in the gap between the plurality of longitudinal heat dissipation fins 2031 and is tightly connected with the adjacent longitudinal heat dissipation fins 2031 by a clamp or a connecting piece; when the humid air in the cabinet contacts the surface of the low-temperature longitudinal heat dissipation fin 2031, the water droplets generated by condensation flow downward along the flow guide groove 2032, and the dust and other impurities carried in the water flow are deposited in the dirt collecting groove 2033 at the flow end due to the change of flow velocity; the heat generated by the auxiliary heating assembly 401 after starting is directly transmitted to the plurality of longitudinal heat dissipation fins 2031 surrounding it, so that the temperature of the plurality of longitudinal heat dissipation fins 2031 is increased to accelerate the evaporation of the residual moisture on the surface of the plurality of longitudinal heat dissipation fins 2031 and in the dirt collecting groove 2033.
[0035] Further, the distribution cavity 3033 is provided as a hollow box structure, one end of which is fixedly communicated with the outlet end of the main heating tube bundle 302 through a flange connection; the flow distribution plate 3034 is rotatably installed at the central position inside the distribution cavity 3033 through a rotating shaft, the plate surface shape of the flow distribution plate 3034 is adapted to the cross-sectional shape of the inner cavity of the distribution cavity 3033; the flow distribution plate 3034 divides the inner cavity space of the distribution cavity 3033 into two, forming the first flow channel 3035 and the second flow channel 3036 which are isolated from each other; when the airflow driven by the fan 301 enters the distribution cavity 3033 after being heated by the main heating tube bundle 302, the operator drives the flow distribution plate 3034 to rotate around the rotating shaft thereof through an external mechanism, and the rotation angle of the flow distribution plate 3034 determines the proportion of the flow passage area of the first flow channel 3035 and the second flow channel 3036, thereby adjusting and controlling the airflow flow distribution flowing to the first directional nozzle 3031 and the second directional nozzle 3032 respectively.
[0036] Further, one end of the first flow channel 3035 is communicated with an independent chamber separated in the distribution cavity 3033, and the other end is fixedly connected with the first directional nozzle 3031 through a bent guide pipe and keeps the airflow passage unobstructed; the second flow channel 3036 also starts from another independent chamber in the distribution cavity 3033 and is fixedly connected with the second directional nozzle 3032 through another straight guide pipe; the side center position of the flow distribution plate 3034 is fixedly connected with an adjusting rod 3037, the adjusting rod 3037 extends outwardly through a sealing bearing hole opened on the side wall of the distribution cavity 3033, and one end of the adjusting rod 3037 located outside the double-flow distribution assembly 303 is provided with a manual knob or connected with a driving motor; when it is necessary to adjust the airflow distribution, the operator rotates the manual knob or starts the driving motor, drives the adjusting rod 3037 to rotate, the rotating movement of the adjusting rod 3037 is transmitted to the flow distribution plate 3034 fixedly connected therewith, drives the flow distribution plate 3034 to rotate around the shaft in the distribution cavity 3033, and the rotation of the flow distribution plate 3034 synchronously changes the inlet opening size of the first flow channel 3035 and the second flow channel 3036 in the distribution cavity 3033, thereby adjusting the airflow proportion entering the two channels respectively, and the airflow after proportional distribution is finally independently sprayed from the first directional nozzle 3031 and the second directional nozzle 3032.
[0037] Further, the air inlet channel 101 is arranged at a lower position of the side wall of the cabinet 1, and is a rectangular cross-section channel penetrating through the side wall of the cabinet 1; the rotatable first air door 1011 is hingedly installed at an inner position of the air inlet channel 101 close to the outside of the cabinet 1; the flow guide cover 1012 is fixedly connected outside the inlet of the air inlet channel 101 by bolts, and the bell mouth of the flow guide cover 1012 faces the outside of the cabinet 1; the plurality of flow guide ribs 1013 are integrally formed on the inner wall surface of the flow guide cover 1012, and are evenly distributed in a radial manner; when external air flows towards the cabinet 1, the air first enters the bell mouth of the flow guide cover 1012, and forms a relatively uniform and stable airflow after being combed and guided by the plurality of flow guide ribs 1013, and the airflow then enters the air inlet channel 101 and acts on the surface of the first air door 1011; when the airflow pressure overcomes the resistance of the first air door 1011, the first air door 1011 is pushed to rotate around the hinge shaft to open, and the airflow then enters the inside of the cabinet 1 through the opened air inlet channel 101.
[0038] Further, the first air door 1011 is hingedly connected to the top of the inner wall of the air inlet channel 101 by a hinge shaft, so that the first air door 1011 can swing in a vertical plane around the hinge shaft; the counterweight 1014 is fixedly installed at an upper position of the plate surface on the side of the first air door 1011 facing the inside of the cabinet 1, and the weight of the counterweight 1014 is configured to provide a specific closing torque; the insect screen 1015 is fixedly installed on the inner side wall of the air inlet channel 101 by a detachable pressing frame, and is located on the side of the first air door 1011 facing the inside of the cabinet 1, and the mesh size of the insect screen 1015 is set to be able to block insects and other foreign matters; when the external airflow pressure acts on the first air door 1011, the first air door 1011 overcomes the gravitational torque and friction resistance generated by the counterweight 1014 to open outward around the hinge shaft, and after the airflow passes through the opened first air door 1011, insects and other foreign matters in the airflow are intercepted by the insect screen 1015, while the air smoothly passes through; when the external airflow weakens or disappears, the first air door 1011 automatically rotates around the hinge shaft under the action of the gravity of the counterweight 1014 until the inlet of the air inlet channel 101 is closed.
[0039] Further, the fixed frame 3041 is fixedly connected in the air duct between the outlet of the fan 301 and the inlet of the main heating tube bundle 302 by mounting ear plates and bolts, and is a rectangular frame structure; the multiple layers of flow guide grating plates 3042 are fixedly installed in the fixed frame 3041 at different inclined angles, each layer of flow guide grating plate 3042 is composed of multiple parallel slats, and the inclined directions of the slats of adjacent two layers of flow guide grating plates 3042 are staggered; when the fan 301 starts to generate airflow, the airflow first enters the inlet of the fixed frame 3041, and then impacts and passes through the multiple layers of flow guide grating plates 3042 in turn, the inclined slats of each layer of flow guide grating plate 3042 cut and guide the airflow, so that the airflow is deflected and diffused, and after the step-by-step action of the multiple layers of flow guide grating plates 3042 in different directions, the initially uneven airflow is fully mixed and homogenized to form a uniform flow field, and then enters the downstream main heating tube bundle 302 for heating.
[0040] Further, the multiple layers of flow guide grating plates 3042 are arranged in the fixed frame 3041 in a staggered and stacked manner with the directions of the slats of adjacent layers being perpendicular to each other, multiple flow guide holes 3043 are formed in the plate body of each layer of flow guide grating plate 3042, the flow guide holes 3043 are regularly distributed in the area of the plate body not covered by the slats, and the connecting support rods 3044 are vertically connected between the corresponding positions of the edges of adjacent two layers of flow guide grating plates 3042; when the airflow flows out of the outlet of the fan 301 and enters the airflow uniform distribution assembly 304, the airflow first impacts the first layer of flow guide grating plate 3042, part of the airflow passes through the gap between the slats, and part of the airflow passes through the flow guide holes 3043, and the airflow is first divided and diverted; then the airflow enters the second layer of flow guide grating plate 3042, since the direction of the slats of the second layer of flow guide grating plate 3042 is staggered with that of the first layer, the airflow is again divided and mixed from different directions, and at the same time, the connecting support rods 3044 ensure the positional stability and overall rigidity of the multiple layers of flow guide grating plates 3042 under the impact of the airflow, and this process is repeated through multiple layers, so that the airflow becomes uniform after passing through all the flow guide grating plates 3042.
[0041] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between the two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; Secondly, in the drawings of the disclosed embodiments, only the structures related to the disclosed embodiments are involved, and other structures can be referred to the usual design, and in the case of no conflict, the same embodiments and different embodiments of the present application can be combined with each other; Finally, the above only is the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A ring main unit for preventing condensation, comprising a cabinet body (1), characterized in that, Also includes: A condensation collection mechanism (2) is provided, comprising a water collection tank (201) and a heat exchange diversion column (202). The water collection tank (201) is located on the inner wall of the cabinet (1). The upper end of the heat exchange diversion column (202) is connected to the water collection tank (201), and the lower end penetrates the bottom plate of the cabinet (1). The structure of the heat exchange diversion column (202) located inside the cabinet (1) is provided with an external heat exchange structure (203). The airflow control mechanism (3) includes a fan (301), a main heating tube bundle (302) and a dual-channel distribution component (303). The main heating tube bundle (302) is located on the air outlet path of the fan (301), and the dual-channel distribution component (303) is located downstream of the main heating tube bundle (302). The dual-channel distribution assembly (303) has a first directional nozzle (3031) and a second directional nozzle (3032). The air supply direction of the first directional nozzle (3031) is towards the inner wall area of the cabinet (1) above the water collection tank (201), and the air supply direction of the second directional nozzle (3032) is towards the external heat exchange structure (203). Temperature regulation mechanism (4), the temperature regulation mechanism (4) includes an auxiliary heating component (401) and a temperature control actuator (402). The auxiliary heating component (401) is disposed at the external heat exchange structure (203). The temperature control actuator (402) includes a temperature sensing element (4021) and a transmission rod (4022). The temperature sensing element (4021) is disposed in the water collection tank (201). One end of the transmission rod (4022) is connected to the temperature sensing element (4021), and the other end is connected to a switch (4023). The switch (4023) is electrically connected to the auxiliary heating component (401) and can be driven by the transmission rod (4022) to close or open.
2. The anti-condensation ring main unit according to claim 1, characterized in that: The opening of the water collection tank (201) is provided with a condensate guide edge (2011) that bends into the cabinet (1). The bottom of the water collection tank (201) is provided with a downward protruding converging bucket (2012). The bottom of the converging bucket (2012) is provided with a water outlet (2013). The upper end of the heat exchange diversion column (202) is connected to the water outlet (2013).
3. The anti-condensation ring main unit according to claim 2, characterized in that: The heat exchange diversion column (202) includes a vertically arranged column (2021); a diversion channel (2022) is formed inside the column (2021); the external heat exchange structure (203) includes a plurality of longitudinal heat dissipation fins (2031) arranged around the column (2021), and the outer wall of the column (2021) is provided with an annular groove (2023) for positioning the longitudinal heat dissipation fins (2031).
4. A ring main unit for preventing condensation according to claim 3, characterized in that: The surfaces of the plurality of longitudinal heat dissipation fins (2031) are provided with flow guiding grooves (2032); The end of the flow guide groove (2032) is provided with a sludge collection groove (2033). The auxiliary heating component (401) is installed between the plurality of longitudinal heat dissipation fins (2031).
5. A ring main unit for preventing condensation according to claim 1, characterized in that: The dual-channel distribution assembly (303) includes a distribution cavity (3033) communicating with the main heating tube bundle (302), and a rotatable flow divider (3034) is provided in the distribution cavity (3033); the flow divider (3034) divides the distribution cavity (3033) into a first flow guide channel (3035) and a second flow guide channel (3036).
6. A ring main unit for preventing condensation according to claim 5, characterized in that: The first flow channel (3035) is connected to the first directional nozzle (3031), the second flow channel (3036) is connected to the second directional nozzle (3032), and the flow divider (3034) is connected to an adjusting rod (3037) extending to the outside of the dual-flow distribution assembly (303).
7. A ring main unit for preventing condensation according to claim 1, characterized in that: The lower part of the side wall of the cabinet (1) is provided with an air inlet channel (101). The air inlet channel (101) is provided with a movable first air door (1011). The air intake channel (101) is provided with a flow guide (1012) at its entrance. The inner wall of the flow guide (1012) is provided with multiple flow guide ribs (1013).
8. A ring main unit for preventing condensation according to claim 7, characterized in that: The first damper (1011) is hinged to the air inlet channel (101); The first damper (1011) is equipped with a counterweight (1014). The air inlet channel (101) is provided with an insect-proof net (1015) on the inner side of the first air door (1011).
9. A ring main unit for preventing condensation according to claim 1, characterized in that: The airflow control mechanism (3) further includes an airflow distribution component (304), which is located between the fan (301) and the main heating tube bundle (302). The airflow distribution component (304) includes a fixed frame (3041) and a multi-layer guide grid plate (3042) that is inclinedly installed in the fixed frame (3041).
10. A ring main unit for preventing condensation according to claim 9, characterized in that: The multiple layers of flow guide plates (3042) are arranged alternately with each other; Each of the flow guide plates (3042) is provided with flow guide holes (3043); A connecting strut (3044) is provided between two adjacent layers of the flow guide plate (3042).