Ring main unit for smart power grid

Abstract

The ring main unit comprises a ring main unit body and further comprises a flame retardant mechanism installed at the top end of the ring main unit body; the ventilation mechanism and the limiting mechanism are arranged on the two sides of the ring main unit body at the same time; the limiting mechanism comprises a plurality of first penetrating holes which penetrate through the inner walls of the two opposite sides of the ring main unit body at equal intervals; the multiple binding ropes are inserted into the multiple first penetrating holes in a penetrating mode, one end of each binding rope is fixedly connected with a threaded sleeve, the other end of each binding rope is rotationally connected with a threaded rod, and the threaded rods are meshed with the interiors of the threaded sleeves; the U-shaped supporting frames are fixedly connected to the outer sides of the ring main unit bodies at equal intervals and located at the bottoms of the first penetrating holes respectively, and the binding ropes correspondingly penetrate through the U-shaped supporting frames respectively; the plurality of U-shaped pressing frames are respectively attached to the top ends of the plurality of U-shaped supporting frames, and the ring main unit for the intelligent power grid disclosed by the invention has the effects that the arrangement efficiency is optimized, and meanwhile, the bending damage of the wiring harness caused by improper force application is avoided as much as possible.

Description

Technical Field

[0001] This invention relates to the field of ring main unit technology, and more particularly to a ring main unit for smart grids. Background Technology

[0002] In the construction of smart grids, ring main units are key power distribution equipment, and the assembly efficiency and reliability of their internal wiring harnesses directly affect the stability of grid operation. Traditional assembly methods, which use manual cable ties to bind the wiring harnesses, suffer from low efficiency and easy bending and damage to the harnesses, making it difficult to meet the needs of modern smart grids for rapid equipment deployment and maintenance.

[0003] Limitations of traditional wire harness fixing technology: Manual operation is inefficient: Assembly personnel need to manually thread the cable ties through the wire harness and fix them inside the cabinet. This process is time-consuming and labor-intensive, especially in complex wire harness layouts, where positional deviations are prone to occur.

[0004] High risk of wire harness damage: Improper force or improper operation may damage the wire harness due to excessive bending or squeezing, resulting in signal transmission interruption or deterioration of electrical performance, increasing the cost of later maintenance.

[0005] Insufficient stability: After the cable ties are fixed, there is no dynamic adjustment mechanism. Vibration or temperature changes during equipment operation may cause the wire harness to loosen, affecting long-term reliability. Summary of the Invention

[0006] This invention discloses a ring main unit for smart grids, which aims to overcome the limitations of traditional wire harness fixing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A ring main unit for smart grids includes a ring main unit body, and further includes: a flame-retardant mechanism installed at the top of the ring main unit body; a ventilation mechanism and a limiting mechanism, which are simultaneously disposed on both sides of the ring main unit body; The limiting mechanism includes: multiple through holes equidistantly disposed on the inner walls of opposite sides of the ring main unit; multiple binding ropes, each inserted into one of the multiple through holes, with one end of each binding rope fixedly connected to a threaded sleeve and the other end rotatably connected to a screw, the screw engaging with the threaded sleeve; multiple U-shaped support frames, equidistantly fixedly connected to the outer sides of multiple ring main units, and located at the bottom of the multiple through holes, with the multiple binding ropes correspondingly passing through the multiple U-shaped support frames; and multiple U-shaped pressure frames, each attached to the top of the multiple U-shaped support frames, and cooperating with the U-shaped support frames to clamp the binding ropes, with the corresponding U-shaped pressure frames and U-shaped support frames connected by bolts. The limiting mechanism further includes: a screw hole, which is provided through the U-shaped support frame and the U-shaped pressure frame, and the bolt is engaged in the screw hole; and a second through hole, which is provided through the inner wall of the bottom end of the U-shaped support frame, and the binding rope passes through the second through hole. The limiting mechanism further includes: multiple snap-fit ​​sleeves, each fixedly connected to one end of the binding rope; multiple T-shaped snap-fit ​​brackets, each fixedly connected to one end of the screw and rotatably snapped into the snap-fit ​​sleeves; and multiple fixing rings, each fixedly connected to the outer periphery of the multiple screw sleeves. The limiting mechanism further includes: multiple pull ropes, fixedly connected to one side of the outer wall of the fixed ring, and a handle fixedly connected to one end of each pull rope; and multiple limiting frames, fixedly connected to the inner wall of the ring network cabinet, with the pull ropes passing through the limiting frames.

[0008] By setting a limiting mechanism, the binding rope can be pulled out as far as possible outside the ring main unit, allowing both ends of the binding rope to pass over the wire harness tied with cable ties. After connecting the two ends of the binding rope, the binding rope is pulled from the outside of the ring main unit, allowing the wire harness to enter the ring main unit and fit against the inner wall of the ring main unit. Compared with manually inserting the wire harness during installation, the arrangement is faster and more effective, and it can also minimize the risk of bending and damage to the wire harness due to improper force.

[0009] In a preferred embodiment, the flame-retardant mechanism includes: a mounting frame, fixedly connected to the top of the ring network cabinet, and a liquid nitrogen storage tank fixedly mounted on the mounting frame; and a conveying bend, fixedly connected to the output end of the liquid nitrogen storage tank. The flame-retardant mechanism also includes: a solenoid valve, which is fixedly installed at the connection between the liquid nitrogen storage tank and the conveying bend; and a spiral tube, which is fixedly connected to the output end of the conveying bend, with the end of the spiral tube extending into the top inner wall of the ring network cabinet.

[0010] With a flame-retardant mechanism, when the smoke detector senses smoke and the smoke is exhausted outward through the guide fan and ventilation mechanism, the liquid nitrogen storage tank located above outputs liquid nitrogen, which evaporates into low-temperature nitrogen gas and is then filled into the ring main unit. This replaces the original air inside the ring main unit, and by reducing the oxygen content and the ambient temperature, it quickly suppresses the initial fire, protects the internal structure of the ring main unit, and reduces the probability of damage to electrical equipment.

[0011] In a preferred embodiment, the outer side of the ring network cabinet is connected to a cabinet door via a hinge, a smoke detector is fixedly installed on the inner wall of the top of the ring network cabinet, grooves are respectively provided on the opposite outer walls of the ring network cabinet, and a side cover shell is interference-fitted into each groove, and a guide fan is fixedly installed on each side cover shell. The ventilation mechanism includes: multiple sets of vents, with upper and lower sets of vents respectively provided on the inner walls of both sides of the ring network cabinet; and multiple temperature sensors, which are fixedly installed on the inner wall of the ring network cabinet and located below the multiple sets of vents. The ventilation mechanism further includes: multiple sets of sliding grooves, which are fixedly connected to the inner wall of the groove and located on both sides of each set of air vents; multiple L-shaped cover plates, which are movably connected to each set of sliding grooves; and a double-headed electric telescopic rod, which is fixedly connected to the inner wall of the groove and whose output end is fixedly connected to the L-shaped cover plate at the corresponding position.

[0012] By incorporating a ventilation system, when the smoke detector senses smoke inside the ring network cabinet, a temperature sensor measures the temperature within a specified range and automatically selects the sensor with the highest measured temperature. The system then removes the cover from the corresponding vent, and an external fan activates to extract smoke through the vent. This effectively optimizes smoke extraction and reduces the possibility of smoke spreading. Furthermore, the vents help suppress the spread of fire, reduce the risk of secondary combustion, and simultaneously remove smoke, achieving a dual effect of smoke extraction and fire suppression.

[0013] In a preferred embodiment, air inlets are provided on both sides of the ring mesh cabinet, and an air inlet assembly is provided at the air inlet. The air inlet assembly includes an annular fixing frame, which is fixedly connected to the ring mesh cabinet outside the air inlet. An internal mounting ring is fixedly connected to the inner wall of the annular fixing frame near the air inlet, and a filter screen is fixedly connected inside the internal mounting ring. An external connecting rod is fixedly connected to the outer wall of the annular fixing frame, and a motor frame is fixedly connected to one end of the external connecting rod. A motor is fixedly connected inside the motor frame, and a rotating shaft is fixedly connected to the output shaft of the motor via a coupling. An air guide frame is fixedly connected to one end of the rotating shaft, and there is a gap between the air guide frame and the filter screen. Scrapers are fixedly connected to both sides of the air guide frame, and the scrapers are in contact with the filter screen. A mounting plate is fixedly connected to the outer wall of the rotating shaft, and two annular fixing frames are fixedly connected to the outer wall of the mounting plate. An air pump is fixedly connected inside one of the annular fixing frames, and the air supply end of the air pump is connected to the inside of the air guide frame through a pipe. A dust pump is fixedly connected inside the other annular fixing frame. Dust collection hoods are fixedly connected to both sides of the air guide frame above the scraper. Dust collection holes are opened at equal intervals on the inner sidewalls of the two dust collection hoods facing the filter screen. A connecting hole is opened on the same side of the two dust collection hoods. The same connecting pipe is fixedly connected inside the two connecting holes. A dust collection box is fixedly connected to one side of the mounting plate. A dust collection pipe is fixedly connected to the dust suction end of the dust pump. One end of the dust collection pipe is inserted into the inside of the connecting pipe. The dust supply end of the dust pump is connected to the inside of the dust collection box through a pipe. With the air intake component, when the air pressure inside the ring network cabinet decreases, air pump one is activated. Air pump one introduces external air into the air guide frame, and the motor is activated. The motor drives the air guide frame to rotate, thereby allowing the air to gradually pass through the filter screen, accelerating the air filling and improving the utilization rate of each position of the filter screen.

[0014] As described above, a ring main unit for a smart grid includes a ring main unit body and further includes: a flame-retardant mechanism installed at the top of the ring main unit body; a ventilation mechanism and a limiting mechanism simultaneously disposed on both sides of the ring main unit body; the limiting mechanism includes: multiple through holes equidistantly disposed on the inner walls of opposite sides of the ring main unit body; multiple binding ropes respectively inserted into the multiple through holes, with one end of each binding rope fixedly connected to a threaded sleeve and the other end rotatably connected to a screw, the screw engaging with the threaded sleeve; multiple U-shaped support frames equidistantly fixedly connected to the outer sides of multiple ring main units and respectively located at the bottom of the multiple through holes, with the multiple binding ropes correspondingly passing through the multiple U-shaped support frames; multiple U-shaped clamping frames respectively attached to the top of the multiple U-shaped support frames and cooperating with the U-shaped support frames to clamp the binding ropes, the corresponding U-shaped clamping frames and U-shaped support frames being connected by bolts. The ring main unit for a smart grid provided by this invention has the technical effect of optimizing the wiring efficiency while minimizing damage caused by improper force to the wire harness bending. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of a ring main unit for smart grids proposed in this invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of a ring main unit for smart grids proposed in this invention.

[0017] Figure 3 This is a schematic diagram showing the disassembly of a limiting mechanism for a ring main unit used in a smart grid, as proposed in this invention.

[0018] Figure 4 This is a schematic diagram showing the partial limiting mechanism of a ring main unit for smart grids proposed in this invention.

[0019] Figure 5 This is a schematic diagram showing the disassembled ventilation mechanism of a ring main unit for smart grids proposed in this invention.

[0020] Figure 6 This is a schematic diagram of the air intake assembly of a ring main unit for smart grids proposed in this invention.

[0021] Figure 7 This is a schematic diagram of the air intake component structure of an AC low-voltage distribution cabinet with internal gas acceleration and diversion proposed in this invention.

[0022] Figure 8 This is an enlarged view of the air guide frame structure of an AC low-voltage distribution cabinet with internal gas acceleration and guidance proposed in this invention.

[0023] In the diagram: 1. Flame-retardant mechanism; 2. Ring mesh cabinet; 3. Cabinet door; 4. Guide fan; 5. Side cover shell; 6. Ventilation mechanism; 7. Limiting mechanism; 8. Air intake assembly; 9. Groove; 101. Mounting bracket; 102. Liquid nitrogen storage tank; 103. Solenoid valve; 104. Conveying bend; 105. Spiral tube; 601. Vent hole; 602. Temperature sensor; 603. Slide groove; 604. L-shaped cover plate; 605. Double-headed electric telescopic rod; 701. Limiting bracket; 702. Handle; 703. Pull rope; 704. Fixing ring; 705. U-shaped pressure bracket; 706. Binding rope; 707. 708. Perforation 2; 709. U-shaped support frame; 710. Screw hole; 711. T-shaped snap-fit ​​frame; 712. Screw sleeve; 713. Snap-fit ​​sleeve; 801. Filter screen; 802. Annular fixing frame; 803. External connecting rod; 804. Internal mounting ring; 805. Air guide frame; 806. Motor; 807. Motor frame; 808. Dust collection box; 809. Annular fixing frame; 810. Mounting plate; 811. Air pump 1; 812. Dust collection hood; 813. Dust collection hole; 814. Scraper; 815. Connecting pipe; 816. Dust collection pipe; 817. Rotating shaft; 818. Dust pump. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] The ring main unit disclosed in this invention is mainly applied to scenarios where ring main units are used.

[0026] Reference Figures 1-4 A ring main unit for smart grids includes a ring main unit 2, a flame-retardant mechanism 1 installed at the top of the ring main unit 2, and a ventilation mechanism 6 and a limiting mechanism 7 disposed on the side wall of the ring main unit 2; a cabinet door 3 is connected to the outside of the ring main unit 2 by a hinge, and a smoke detector is fixedly installed on the inner wall at the top of the ring main unit 2; grooves 9 are respectively provided on the opposite outer walls of the ring main unit 2, and a side cover shell 5 is interference-fitted into each groove 9, and a guide fan 4 is fixedly installed on each side cover shell 5.

[0027] Among them, reference Figure 2In a preferred embodiment, the flame-retardant mechanism 1 includes a mounting frame 101, a liquid nitrogen storage tank 102, a solenoid valve 103, a conveying bend 104, and a spiral tube 105: the mounting frame 101 is fixedly connected to the top of the ring network cabinet 2, and the liquid nitrogen storage tank 102 is fixedly mounted on the mounting frame 101; the conveying bend 104 is fixedly connected to the output end of the liquid nitrogen storage tank 102; the solenoid valve 103 is fixedly mounted at the connection between the liquid nitrogen storage tank 102 and the conveying bend 104; the spiral tube 105 is fixedly connected to the output end of the conveying bend 104, and the end of the spiral tube 105 extends into the inner wall of the top of the ring network cabinet 2.

[0028] As the smoke detector senses smoke and the smoke is expelled outward through the guide fan 4 and ventilation mechanism 6, the solenoid valve 103 at the output end of the liquid nitrogen storage tank 102 located above simultaneously opens, allowing liquid nitrogen to sequentially enter the conveying bend 104 and spiral tube 105. By extending the channel length through the conveying bend 104 and spiral tube 105, evaporation buffering is achieved. After evaporation into low-temperature nitrogen, it is filled into the ring network cabinet 2, which can replace the original air inside the ring network cabinet 2. Through the dual effects of reducing oxygen content and reducing ambient temperature, it can quickly suppress the initial fire, protect the internal structure of the ring network cabinet 2, and reduce the probability of damage to electrical equipment. At the same time, in conjunction with the use of ventilation mechanism 6, it can guide cold air to the location of the fire, thereby optimizing the utilization rate of cold air.

[0029] Multiple through holes are equidistantly opened on the inner walls of opposite sides of the ring network cabinet 2; the limiting mechanism 7 includes a limiting frame 701, a handle 702, a pull rope 703, a fixing ring 704, a U-shaped pressure frame 705, a binding rope 706, a U-shaped support frame 708, a T-shaped clip frame 710, and a clip sleeve 713. Reference Figure 3 Multiple pull ropes 703 are fixedly connected to one side of the outer wall of the fixed ring 704, and one end of the pull rope 703 is fixedly connected to the handle 702; multiple limit frames 701 are fixedly connected to the inner wall of the ring network cabinet 2, and the pull rope 703 passes through the limit frame 701; by setting up the pull rope 703 and the limit frame 701, the binding rope 706 near the inner side can be moved outward by pulling the pull rope 703, which is convenient for grabbing both ends of it, and the setting of the limit frame 701 can stabilize the position of the pull rope 703, making it convenient to find and pull the pull rope 703.

[0030] Multiple binding ropes 706 are inserted into multiple through holes 1, and one end of each binding rope 706 is fixedly connected to a threaded sleeve 712, while the other end is rotatably connected to a screw 711, with the screw 711 engaging with the threaded sleeve 712; multiple U-shaped support frames 708 are equidistantly fixed to the outside of multiple ring network cabinets 2, and are located at the bottom of multiple through holes 1; multiple binding ropes 706 pass through multiple U-shaped support frames 708 respectively; through holes 2 707 are provided through the inner wall of the bottom end of the U-shaped support frame 708, and the binding ropes 706 pass through through through holes 2 707; multiple U-shaped pressure frames 705 are respectively attached to the top of multiple U-shaped support frames 708, and cooperate with the U-shaped support frames 708 to clamp the binding ropes 706; correspondingly, screw holes 709 are provided through both the U-shaped support frame 708 and the U-shaped pressure frame 705, and the U-shaped pressure frame 705 and the U-shaped support frame 708 are connected by bolts.

[0031] Reference Figure 4 Multiple snap-fit ​​sleeves 713 are fixedly connected to one end of the binding rope 706; multiple T-shaped snap-fit ​​brackets 710 are fixedly connected to one end of the screw 711 and are rotatably snapped into the snap-fit ​​sleeves 713; the rotatable connection of the T-shaped snap-fit ​​brackets 710 to the snap-fit ​​sleeves 713 facilitates the engagement of the threaded sleeves 712 and the screw 711 at both ends of the binding rope 706; multiple fixing rings 704 are fixedly connected to the outer periphery of multiple threaded sleeves 712.

[0032] In the limiting mechanism 7, the binding rope 706 can be pulled out as far as possible outside the ring network cabinet 2. Then, the screw 711 and the screw sleeve 712 are separated, so that the two ends of the binding rope 706 are wrapped around the wire harness tied with cable ties. Then, the screw 711 is engaged in the screw sleeve 712 to complete the connection between the two ends of the binding rope 706. Then, the binding rope 706 is pulled from the outside of the ring network cabinet 2. By pulling the binding rope 706 in sequence at different positions on one side, the wire harness can be put into the ring network cabinet 2 and attached to the inner wall of the ring network cabinet 2. Compared with manually inserting the wire harness during installation, the sorting speed is faster and the effect is better. At the same time, it can avoid bending and damage to the wire harness caused by improper force as much as possible. After pulling the binding rope 706 to the required position, the U-shaped pressure frame 705 is covered and the connection between the U-shaped pressure frame 705 and the U-shaped support frame 708 is established by bolts to clamp and fix the binding rope 706, thereby stabilizing the position of the wire harness.

[0033] Reference Figure 2 and Figure 5In a preferred embodiment, the ventilation mechanism 6 includes a temperature sensor 602, a sliding groove 603, an L-shaped cover plate 604, and a double-headed electric telescopic rod 605. Two sets of ventilation holes 601 are respectively provided on the inner walls of both sides of the ring network cabinet 2. Multiple temperature sensors 602 are fixedly installed on the inner walls of the ring network cabinet 2, and are located below the multiple sets of ventilation holes 601. Multiple sliding grooves 603 are fixedly connected to the inner walls of the grooves 9, and are located on both sides of each set of ventilation holes 601. Multiple L-shaped cover plates 604 are movably connected within each set of sliding grooves 603. The double-headed electric telescopic rod 605 is fixedly connected to the inner wall of the grooves 9, and its output end is fixedly connected to the corresponding L-shaped cover plate 604.

[0034] When the smoke detector senses smoke inside the ring network cabinet 2, in addition to sending out a signal, it also measures the temperature within the range using the temperature sensor 602 and automatically selects the temperature sensor 602 with the highest measured temperature. By activating the double-headed electric telescopic rod 605, the L-shaped cover plate 604 at the corresponding position moves along the slide rail 603 in one direction, removing the cover from the ventilation hole 601 at the corresponding position. Simultaneously, the external guide fan 4 operates, drawing smoke through the ventilation hole 601 at that position. By drawing air from the core area of ​​the smoke source, the smoke extraction effect is effectively optimized, and the possibility of smoke spreading is reduced. Furthermore, the ventilation hole 601, compared to direct smoke extraction, can suppress the spread of fire sources, reduce the risk of secondary combustion, and also achieve smoke extraction, thus achieving the dual effect of smoke extraction and fire suppression.

[0035] refer to Figure 6-8 In a preferred embodiment, air inlets are provided on both sides of the ring network cabinet 2, and an air inlet assembly 8 is provided at the air inlet of the ring network cabinet 2.

[0036] The air intake assembly 8 includes an annular fixing frame 802, which is fixedly connected to the ring mesh cabinet 2 outside the air intake hole. An internal mounting ring 804 is fixedly connected to the inner wall of the annular fixing frame 802 near the air intake hole, and a filter screen 801 is fixedly connected inside the internal mounting ring 804. An external connecting rod 803 is fixedly connected to the outer wall of the annular fixing frame 802, and a motor frame 807 is fixedly connected to one end of the external connecting rod 803. A motor 806 is fixedly connected inside the motor frame 807, and the output shaft of the motor 806 is fixedly connected to a rotating shaft 817 via a coupling. An air guide frame 805 is fixedly connected to one end, and there is a gap between the air guide frame 805 and the filter screen 801; scraper blades 814 are fixedly connected to both sides of the air guide frame 805, and the scraper blades 814 are in contact with the filter screen 801; a mounting plate 810 is fixedly connected to the outer side of the rotating shaft 817, and two annular fixing brackets 809 are fixedly connected to the outer side of the mounting plate 810; an air pump 811 is fixedly connected inside one of the annular fixing brackets 809, and the air supply end of the air pump 811 is connected to the inside of the air guide frame 805 through a pipe; a dust suction pump 818 is fixedly connected inside the other annular fixing bracket 809.

[0037] Dust collection hoods 812 are fixedly connected to both sides of the air guide frame 805 above the scraper 818. Dust collection holes 813 are opened at equal intervals on the inner sidewalls of the two dust collection hoods 812 facing the filter screen 801. A connecting hole is opened on the same side of the two dust collection hoods 812. The same connecting pipe 815 is fixedly connected inside the two connecting holes. A dust collection box 808 is fixedly connected to one side of the mounting plate 810. A dust collection pipe 816 is fixedly connected to the dust suction end of the dust pump 818. One end of the dust collection pipe 816 is inserted into the inside of the connecting pipe 815. The dust conveying end of the dust pump 818 is connected to the inside of the dust collection box 808 through a pipe. Specifically, when the air pressure inside the ring network cabinet 2 decreases, the air pump 811 is activated, which guides external air into the air guide frame 805. The motor 806 is activated, which drives the air guide frame 805 to rotate, allowing the air to gradually pass through the filter screen 801, accelerating the filling of the air and improving the utilization rate of each position of the filter screen 801. As the motor 806 drives the air guide frame 805 to rotate, the scraper 814 scrapes off the dust attached to the filter screen 801. The dust pump 818 is activated, which collects the scattered dust through the dust collection holes 813 on the dust collection hood 812, preventing the dust carried by the air from clogging the filter holes on the filter screen 801 and improving the service life of the filter screen 801.

[0038] Working principle: In the limiting mechanism 7, the binding rope 706 can be pulled out as far as possible outside the ring network cabinet 2. Then, the screw 711 and the screw sleeve 712 are separated, so that the two ends of the binding rope 706 are wrapped around the wire harness tied with cable ties. Then, the screw 711 is engaged in the screw sleeve 712 to complete the connection between the two ends of the binding rope 706. Then, the binding rope 706 is pulled from the outside of the ring network cabinet 2. By pulling the binding rope 706 in sequence at different positions on one side, the wire harness can be entered into the ring network cabinet 2 and attached to the inner wall of the ring network cabinet 2. Compared with manually inserting the wire harness during installation, the sorting speed is faster and the effect is better. At the same time, it can avoid bending and damage to the wire harness caused by improper force as much as possible. After pulling the binding rope 706 to the required position, the U-shaped pressure frame 705 is covered and the connection between the U-shaped pressure frame 705 and the U-shaped support frame 708 is established by bolts to clamp and fix the binding rope 706, thereby stabilizing the position of the wire harness.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ring main unit for smart grids, comprising a ring main unit body (2), characterized in that, Also includes: The flame-retardant mechanism (1) is installed on the top of the ring network cabinet (2); Ventilation mechanism (6) and limiting mechanism (7) are simultaneously located on both sides of ring network cabinet (2); The limiting mechanism (7) includes: Multiple perforations are equidistantly arranged on the inner walls of opposite sides of the ring network cabinet (2); Multiple binding ropes (706) are inserted into multiple holes, and one end of each binding rope (706) is fixedly connected to a screw sleeve (712), and the other end is rotatably connected to a screw (711), and the screw (711) is engaged in the screw sleeve (712); Multiple U-shaped support frames (708) are fixedly connected at equal intervals to the outside of multiple ring network cabinets (2) and are located at the bottom of multiple through holes. Multiple binding ropes (706) pass through multiple U-shaped support frames (708) respectively. Multiple U-shaped pressure frames (705) are respectively attached to the top of multiple U-shaped support frames (708) and cooperate with the U-shaped support frames (708) to clamp the binding rope (706). The corresponding U-shaped pressure frames (705) and U-shaped support frames (708) are connected by bolts.

2. A ring main unit for a smart grid according to claim 1, characterized in that, The limiting mechanism (7) also includes: A screw hole (709) is provided through the U-shaped support frame (708) and the U-shaped pressure frame (705), and the bolt is engaged in the screw hole (709); The second perforation (707) is installed through the bottom inner wall of the U-shaped support frame (708), and the binding rope (706) passes through the second perforation (707).

3. A ring main unit for a smart grid according to claim 2, characterized in that, The limiting mechanism (7) also includes: Multiple snap-fit ​​sleeves (713) are respectively fixedly connected to one end of the binding rope (706); Multiple T-shaped clip brackets (710) are fixedly connected to one end of the screw (711) and rotatably clipped into the clip sleeve (713); Multiple retaining rings (704) are respectively fixedly connected to the outer periphery of multiple threaded sleeves (712).

4. A ring main unit for a smart grid according to claim 3, characterized in that, The limiting mechanism (7) also includes: Multiple pull ropes (703) are fixedly connected to one side of the outer wall of the fixed ring (704), and one end of the pull rope (703) is fixedly connected to a handle (702). Multiple limit frames (701) are fixedly connected to the inner wall of the ring network cabinet (2), and the pull rope (703) passes through the limit frames (701).

5. A ring main unit for a smart grid according to claim 1, characterized in that, The outer side of the ring network cabinet (2) is connected to a cabinet door (3) by a hinge. A smoke detector is fixedly installed on the inner wall of the top of the ring network cabinet (2). Grooves (9) are respectively provided on the opposite outer walls of the ring network cabinet (2), and a side cover shell (5) is interference-fitted into each groove (9). A guide fan (4) is fixedly installed on each side cover shell (5).

6. A ring main unit for a smart grid according to claim 1, characterized in that, The ventilation mechanism (6) includes: Multiple sets of ventilation holes (601) are provided on the inner walls of both sides of the ring network cabinet (2). Multiple temperature sensors (602) are fixedly installed on the inner wall of the ring network cabinet (2) and are located below multiple sets of vent holes (601); Multiple sets of sliding grooves (603) are fixedly connected to the inner wall of the groove (9) and are located on both sides of each set of vent holes (601); Multiple L-shaped cover plates (604) are movably connected within each set of slides (603); The double-headed electric telescopic rod (605) is fixedly connected to the inner wall of the groove (9), and its output end is fixedly connected to the L-shaped cover plate (604) at the corresponding position.

7. A ring main unit for a smart grid according to claim 6, characterized in that, The flame retardant mechanism (1) includes: Mounting bracket (101) is fixedly connected to the top of the ring network cabinet (2), and a liquid nitrogen storage tank (102) is fixedly installed on the mounting bracket (101). A solenoid valve (103) is fixedly installed at the connection between the liquid nitrogen storage tank (102) and the delivery bend (104); The spiral tube (105) is fixedly connected to the output end of the conveying bend (104), and the end of the spiral tube (105) extends into the top inner wall of the ring network cabinet (2).

8. A ring main unit for a smart grid according to claim 6, characterized in that, The ring mesh cabinet (2) has air inlets on both sides, and the ring mesh cabinet (2) is provided with an air inlet assembly (8) at the air inlet. The air inlet assembly (8) includes an annular fixing frame (802), which is fixedly connected to the ring mesh cabinet (2) at the outside of the air inlet. The inner side wall of the annular fixing frame (802) near the air inlet is fixedly connected with an internal mounting ring (804), and a filter screen (801) is fixedly connected inside the internal mounting ring (804). An external connecting rod (803) is fixedly connected to the outer side wall of the annular fixing frame (802), and a motor frame (807) is fixedly connected to one end of the external connecting rod (803).

9. A ring main unit for a smart grid according to claim 8, characterized in that, The motor frame (807) is internally fixedly connected to a motor (806), and the output shaft of the motor (806) is fixedly connected to a rotating shaft (817) via a coupling. One end of the rotating shaft (817) is fixedly connected to an air guide frame (805). There is a gap between the air guide frame (805) and the filter screen (801). Both sides of the air guide frame (805) are fixedly connected to scrapers (814), and the scrapers (814) are in contact with the filter screen (801).

10. A ring main unit for a smart grid according to claim 9, characterized in that, A mounting plate (810) is fixedly connected to the outer wall of the rotating shaft (817), and two annular fixing brackets (809) are fixedly connected to the outer wall of the mounting plate (810). An air pump (811) is fixedly connected inside one of the annular fixing brackets (809), and the air supply end of the air pump (811) is connected to the inside of the air guide frame (805) through a pipe. A dust suction pump (818) is fixedly connected inside the other annular fixing bracket (809). Dust collection hoods (812) are fixedly connected to both sides of the air guide frame (805) above the scraper (818). Dust collection hoods (812) have dust collection holes (813) at equal intervals on the inner sidewall facing the filter screen (801). Both dust collection hoods (812) have connecting holes on the same side. The two connecting holes are fixedly connected to the same connecting pipe (815). A dust collection box (808) is fixedly connected to one side of the mounting plate (810). The dust collection end of the vacuum pump (818) is fixedly connected to a dust collection pipe (816). One end of the dust collection pipe (816) is inserted into the inside of the connecting pipe (815). The dust conveying end of the vacuum pump (818) is connected to the inside of the dust collection box (808) through a pipe.

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