Intelligent power grid user external primary and secondary fusion ring network box
By using fixed components and airflow duct design in outdoor primary and secondary integrated ring main units, the problem of poor contact caused by thermal expansion and contraction of three-core cables is solved, achieving stable connection and efficient heat dissipation, and extending the service life of equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XUZHOU ZHONGTIE ELECTRIC
- Filing Date
- 2026-04-20
- Publication Date
- 2026-07-14
Smart Images
Figure CN122393738A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of smart grid technology, and in particular to a smart grid user external primary and secondary integrated ring network box. Background Technology
[0002] The outdoor integrated primary and secondary ring main unit is an intelligent outdoor power equipment that deeply integrates primary equipment (switchgear, circuit breaker) and secondary equipment (protection, measurement and control, communication) in the distribution network. It not only has the power distribution and circuit control functions of the traditional ring main unit, but also integrates status monitoring, remote operation and maintenance and fault self-healing capabilities. It is a key node for realizing the automation and intelligence of the distribution network.
[0003] According to the standardized design of the integrated primary and secondary ring main unit, the electrical modules inside the unit include gas boxes, cable boxes, mechanism boxes, and instrument boxes. In practical applications, a three-core cable is connected to the cable box and then to the gas box via a cable conduit to achieve electrical interaction.
[0004] However, existing outdoor primary and secondary integrated ring main units still have some defects in use: For the connection of three-core cables, the three core wires of the three-core cable are first separated, and then the ends of the core wires are inserted into the end of the cable sleeve through the cable connector. During use, the three-core cable carries current and generates heat, resulting in thermal expansion and contraction. The expansion and contraction displacement of the end of the three-core cable is significant, but the three-core cable does not have a specific fixed design. Its expansion and contraction displacement will continuously affect the connection between the three-core cable and the cable sleeve, resulting in a non-natural connection between the three-core cable and the cable sleeve. Under long-term action, it is easy to cause poor contact and heat generation, affecting the use. Summary of the Invention
[0005] This application proposes a smart grid user external primary and secondary integrated ring network box, which has the advantages of effectively clamping and fixing three-core cables, ensuring that the connection between the three-core cables and the cable sleeve is in a natural docking state, reducing the possibility of overheating and damage due to poor contact, and solving the problem that the use of three-core cables is affected by significant thermal expansion and contraction.
[0006] To achieve the above objectives, this application adopts the following technical solution: a smart grid user external primary and secondary integrated ring network box, comprising: The cable box has an access hole at its bottom and an outlet hole at its top. Cable sleeve, the end of which passes through the outlet hole of the cable box; A three-core cable, the end of which passes through the access hole of the cable box; The fixing component has its bottom end abutting against the bottom interior of the cable box and its top end abutting against the top interior of the cable box. The end of the cable sleeve is in a mating state with the end of the three-core cable. The fixing component is movably snapped onto the outside of the cable sleeve and the three-core cable. The fixing component is used to snap and fix the three-core cable to ensure that the connection between the three-core cable and the cable sleeve is in a natural mating state.
[0007] Furthermore, the cable sleeves are vertically arranged at the bottom of the air box, with three cable sleeves forming a group, and the group of cable sleeves arranged in a linear array.
[0008] Furthermore, the number of access holes corresponds to the number of three-core cables, the number of outlet holes corresponds to the number of cable sleeves, and the number of cable sleeves is three times the number of three-core cables. The three-core cable includes a protective layer and core wires, and three core wires are sleeved inside the protective layer. Each of the three core wires has a cable connector at its end, and the end of the core wire is inserted into the end of the cable sleeve through the cable connector.
[0009] Furthermore, the fixing member includes: The first component, two first components are symmetrically arranged on both sides of the three-core cable, and the two first components spliced together form a group. A T-shaped groove is opened in the middle of the first component, and the protective layer and the core wire are located in the T-shaped groove of the first component. The diameter of the T-shaped groove is adapted to the size of the protective layer on which the core wire is sleeved. The second component is fixedly sleeved at the top end of the first component and the bottom end of the second component, and the two second components spliced together form a group. A group of second components corresponds to a cable sleeve. A vertical groove is opened in the middle of the second component, and the core wire is located in the vertical groove of the second component. The diameter of the vertical groove is adapted to the size of the core wire. The third component is sleeved between the top end of the second component and the bottom end of the cable sleeve. Two third components spliced together form a group. The group of third components is perpendicular to the group of second components. The middle part of the third component has an I-shaped groove, and the core wire is located in the I-shaped groove of the third component. The diameter of the I-shaped groove is adapted to the size of the core wire. An auxiliary component is provided on the outside of each of the first group and the three groups of third components; The limiting components are provided inside the first set of components and the third set of components. Two limiting components arranged symmetrically constitute a set. Each set of limiting components corresponds to an auxiliary component.
[0010] Furthermore, the bottom end of the first component abuts against the inner bottom end of the cable box, and the top end of the third component abuts against the inner top end of the cable box. Horizontal air holes are formed on the walls of the first, second, and third components.
[0011] Furthermore, the auxiliary components include: An auxiliary body, wherein the auxiliary body is U-shaped and its inner wall is movably sleeved with one side wall of a set of first components or a set of third components; The auxiliary plate has a horizontal vent hole on its inner wall, and the auxiliary body is movably engaged with the auxiliary plate through the vent hole. One side wall of the auxiliary plate abuts against the other side wall of a group of first components or a group of third components. The auxiliary bolt has several air inlets on its lower side wall, and the auxiliary bolt is threaded to the end of the auxiliary plate through the air inlets of the auxiliary body. Each auxiliary plate has two auxiliary bolts.
[0012] Furthermore, the limiting component includes: An outer limiting membrane is provided, wherein a limiting groove is formed on the outer wall of the first or third component, and one side of the outer limiting membrane is fixedly embedded in the inner wall of the limiting groove, and the other side of the outer limiting membrane can abut against the inner wall of the auxiliary body. The outer limiting membrane is in the shape of a quarter ring and is filled with gas. A tension spring is provided inside the outer limiting membrane. The inner limiting membrane has a limiting groove formed on the inner wall of the first or third component, and one side of the inner limiting membrane is fixedly embedded in the inner wall of the limiting groove. The other side of the inner limiting membrane can abut against the outer wall of the protective layer or the core wire. The inner limiting membrane is half annular and filled with gas. A compression spring is provided inside the inner limiting membrane. A limiting tube is fixedly sleeved inside the first or third component, and both ends of the limiting tube are fixedly connected to the outer limiting membrane and the inner limiting membrane, respectively.
[0013] Furthermore, each end of the cable box is movably connected to a cable box door; The cable box body and cable box door are components of the cable box. An air box is provided at the upper rear of the cable box, and a mechanism box and an instrument box are provided at the upper front of the cable box, with the mechanism box located below the instrument box. One cable box, one air box, one mechanism box and one instrument box constitute a set of electrical modules, and several sets of electrical modules are arranged in a linear array. Airflow pipes are provided inside the bottom and top of the cable box. The two airflow pipes are symmetrically arranged, with the lower airflow pipe used for air intake and the upper airflow pipe used for air exhaust.
[0014] Furthermore, the electrical module is placed inside the main housing. The bottom of the main housing is provided with a lower bottom plate, and the top of the main housing is provided with an upper top plate. The main housing is hinged with doors at both the front and rear. The main housing, lower bottom plate, upper top plate, and main housing door are components of the working mechanism.
[0015] Furthermore, the left and right walls of the main housing are provided with heat dissipation holes. The main housing is equipped with two heat dissipation modules, which are located on both sides of the electrical module. One end of the heat dissipation module is connected to the heat dissipation hole of the main housing, and the other end of the heat dissipation module is connected to the airflow pipe below.
[0016] The beneficial effects of this invention are as follows: This application provides a smart grid user external primary and secondary integrated ring network box. By movably setting fixing components on the outside of the cable sheath and three-core cable, and the fixing components being composed of a first component, a second component, a third component, and auxiliary components, the fixing components are positioned inside the cable box during use. The protective layer is movably engaged by a set of first components, and each core wire is movably engaged by a set of third components. The auxiliary components achieve a stable connection between the first set of first components and the three sets of third components, effectively securing the three-core cable. This controls the thermal expansion and contraction of the three-core cable, ensuring a natural connection between the three-core cable and the cable sheath, improving the protection of both the three-core cable and the cable sheath, and reducing the possibility of overheating and damage due to poor contact.
[0017] By setting a set of limiting components in each of the first set of components and the three sets of third components, and designing an auxiliary component corresponding to the limiting components, the limiting components are designed to consist of an outer limiting membrane, an inner limiting membrane, and a limiting tube. The auxiliary components consist of an auxiliary body, an auxiliary plate, and an auxiliary bolt. In use, under the action of the auxiliary body, the outer limiting membrane is compressed, and after passing through the limiting tube, the inner limiting membrane expands, which can respectively clamp and fix the protective layer and the core wire. That is, it can accurately fix the three-core cable multiple times according to the size of the position of the three-core cable, further improving the clamping and fixing effect of the three-core cable. At the same time, the auxiliary body and the outer limiting membrane are fully in contact to increase the friction between the two, further improving the installation and fixing effect of the auxiliary components.
[0018] By creating airflow pipes inside the bottom and top of the cable box, with the airflow pipe at the bottom of the cable box connected to the heat dissipation module, an upward-moving airflow is created within the cable box to dissipate heat from the three-core cable. The auxiliary body is designed with vertical air inlets on its lower wall and horizontal air outlets on its inner wall. Furthermore, the first and third components are designed with horizontal air vents on their walls. This design allows the auxiliary body to capture the vertically moving airflow and alter its trajectory, enabling the airflow to pass horizontally through the fixed components and the three-core cable, further enhancing the heat dissipation effect. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort: Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a three-dimensional structural diagram of the working mechanism and heat dissipation module in this invention; Figure 3 This is a three-dimensional structural diagram of the electrical module in this invention; Figure 4 This is a three-dimensional structural diagram of an electrical module in a disassembled state according to the present invention; Figure 5 This is a three-dimensional structural diagram of the cable sleeve, three-core cable, and fixing components located in the cross-section of the cable box in this invention. Figure 6 This is a three-dimensional structural diagram of the cable sheath, three-core cable, and fixing components in this invention; Figure 7 This is a three-dimensional structural diagram of the cable sheath, three-core cable, and fixing components in the disassembled state of the present invention. Figure 8 This is a three-dimensional structural diagram of the first component, the second component, their limiting components, and auxiliary components in the disassembled state of the present invention. Figure 9 This is a three-dimensional structural diagram of the third component and its limiting and auxiliary components in the disassembled state of the present invention. Figure 10 This is a three-dimensional structural diagram of the auxiliary component in this invention; Figure 11 This is a top-view perspective view of the cable sleeve, three-core cable, and fixing component located in the middle of the third component in this invention. Figure 12In this invention Figure 11 Enlarged structural diagram at point A; Figure 13 This is a partial three-dimensional structural diagram of the cable sheath, three-core cable, and fixing components in this invention; Figure 14 In this invention Figure 13 Enlarged structural diagram at point B.
[0020] In the diagram: 1. Working mechanism; 11. Main housing; 12. Lower base plate; 13. Upper top plate; 14. Main housing door; 2. Electrical module; 21. Cable box; 211. Cable box body; 212. Cable box door; 22. Air box; 23. Mechanism box; 24. Instrument box; 3. Heat dissipation module; 4. Cable sleeve; 5. Three-core cable; 51. Protective layer; 52. Core wire; 6. Fixing component; 61. First component; 62. Second component; 63. Third component; 7. Limiting component; 71. Outer limiting membrane; 72. Inner limiting membrane; 73. Limiting tube; 8. Auxiliary component; 81. Auxiliary body; 82. Auxiliary plate; 83. Auxiliary bolt. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] Example 1: A smart grid user external primary and secondary integrated ring network box, such as... Figures 1-2 The main housing includes a main housing 11, with a lower bottom plate 12 at the bottom and an upper top plate 13 at the top. The lower bottom plate 12 and the upper top plate 13 provide protection for the main housing 11. The main housing 11 is equipped with a heater and a dehumidifier. When the external humidity is high and the temperature difference is large, the use of the heater and dehumidifier can reduce condensation inside the main housing 11, avoiding problems such as corrosion of electronic components, short circuits at terminals, or insulation flashover, and further enhancing the protection of the main housing 11. The main housing 11 is hinged with a main housing door 14 at both the front and rear, which facilitates the subsequent maintenance of the components inside the main housing 11. The main housing 11, the lower bottom plate 12, the upper top plate 13, and the main housing door 14 together constitute the working mechanism 1.
[0023] like Figure 1 The main housing 11 houses an electrical module 2. In practical applications, the number of electrical modules 2 can be configured according to actual needs. Common configurations include two-in-two-out and two-in-four-out configurations, such as... Figures 3-4Several electrical modules 2 are arranged in a linear array. Each electrical module 2 includes a cable box 21, an air box 22, a mechanism box 23, and an instrument box 24. The air box 22 is located at the upper rear of the cable box 21, and the mechanism box 23 and the instrument box 24 are located at the upper front of the cable box 21, with the mechanism box 23 located below the instrument box 24.
[0024] like Figures 4-6 The cable box 21 includes a cable box body 211 and a cable box door 212. Both ends of the cable box body 211 are movably latched with a cable box door 212, sealing the cable box body 211 and protecting the equipment located inside. The bottom of the cable box body 211 has an access hole, and the top of the cable box body 211 has an exit hole. The end of the cable sleeve 4 passes through the exit hole of the cable box body 211, and the end of the three-core cable 5 passes through the access hole of the cable box body 211. The cable sleeve 4 is vertically installed at the bottom of the air box 22. Three cable sleeves 4 form a group, and each group of cable sleeves 4 is arranged in a linear array. This is the standard configuration of the cable sleeves 4 in the ring network box. This design considers both electrical safety and the mechanical characteristics of the three-core cable 5, and is the result of long-term engineering practice optimization. The number of access holes corresponds to the number of three-core cables 5, and the number of exit holes corresponds to the number of cable sleeves 4. Furthermore, the number of cable sleeves 4 is three times the number of three-core cables 5. Figure 7 The three-core cable 5 includes a protective layer 51 and core wires 52. Three core wires 52 are nested inside the protective layer 51. Because the protective layer 51 is a multi-layer composite, it consists of an outer sheath, an armor layer, an inner sheath, a wrapping layer, and a filling layer from the outside to the inside. This protects the core wires 52 and ensures electrical safety and stable signal transmission. The ends of the three core wires 52 are equipped with cable connectors (such as T-type connectors), and the ends of the core wires 52 are inserted into the ends of the cable sleeves 4 through the cable connectors. That is, when a three-core cable 5 is connected to the ring main unit, its three core wires 52 must be connected one-to-one with the three cable sleeves 4 on the gas box 22 to form a fully insulated and fully sealed connection, thereby realizing the access and transmission of current.
[0025] like Figures 5-7 The bottom end of the fixing member 6 abuts against the bottom end of the inside of the cable box 211, and the top end of the fixing member 6 abuts against the top end of the inside of the cable box 211. The end of the cable sleeve 4 is in a mating state with the end of the three-core cable 5. The fixing member 6 is movably snapped onto the outside of the cable sleeve 4 and the three-core cable 5. The fixing member 6 is used to snap and fix the three-core cable 5 to control the thermal expansion and contraction of the three-core cable 5, and to ensure that the connection between the three-core cable 5 and the cable sleeve 4 is in a natural mating state. This achieves protection for the three-core cable 5 and the cable sleeve 4 and reduces the possibility of them being damaged by overheating due to poor contact.
[0026] Example 2, based on Example 1, such as Figure 6 The fixing component 6 includes a first component 61, a second component 62, a third component 63, and an auxiliary component 8, specifically: like Figures 7-8 , Figures 11-14 Two first components 61 are symmetrically arranged on both sides of the three-core cable 5, and the two first components 61 spliced together form a group. A T-shaped groove is opened in the middle of the first component 61, and the protective layer 51 and the core wire 52 are located in the T-shaped groove of the first component 61. The diameter of the T-shaped groove is adapted to the size of the protective layer 51 on which the core wire 52 is sleeved, so as to effectively limit and fix the protective layer 51 on which the core wire 52 is sleeved.
[0027] like Figures 7-8 , Figures 11-14 The top end of the first component 61 is fixedly sleeved with the bottom end of the second component 62, and the two second components 62 spliced together form a group. A group of second components 62 corresponds to a cable sleeve 4, which can provide conditions for the third component 63 to fix the first component 61 and the second component 62. A vertical groove is opened in the middle of the second component 62, and the core wire 52 is located in the vertical groove of the second component 62. The diameter of the vertical groove is adapted to the size of the core wire 52, which can effectively limit and fix the core wire 52.
[0028] like Figure 7 , Figure 9 , Figures 11-14 A third component 63 is sleeved between the top end of the second component 62 and the bottom end of the cable sleeve 4. The two third components 63 spliced together form a group. The group of third components 63 and the group of second components 62 are perpendicular to each other, so that the group of third components 63 can fix the group of second components 62, and then fix the group of first components 61. An I-shaped groove is opened in the middle of the third component 63, and the core wire 52 is located in the I-shaped groove of the third component 63. The diameter of the I-shaped groove is adapted to the size of the core wire 52, which can effectively limit and fix the core wire 52.
[0029] like Figure 5 The bottom end of the first component 61 abuts against the bottom end of the inside of the cable box 211, and the top end of the third component 63 abuts against the top end of the inside of the cable box 211, which can ensure the stability of the fixing component 6 inside the cable box 211.
[0030] like Figure 7 Horizontal vents are provided on the walls of the first component 61, the second component 62 and the third component 63 to connect the inside and outside of the first component 61, the second component 62 and the third component 63, so as to facilitate effective heat dissipation of the three-core cable 5 fixed in the first component 61, the second component 62 and the third component 63.
[0031] like Figure 10Each of the first component 61 and the three third components 63 is provided with an auxiliary component 8 on its exterior. This auxiliary component 8 is used to splice and fix the first component 61, the second component 62, and the third component 63, thereby achieving the snap-fit fixation of the three-core cable 5. The auxiliary component 8 includes an auxiliary body 81, an auxiliary plate 82, and an auxiliary bolt 83. The auxiliary body 81 is U-shaped, and its inner wall is movably sleeved with one side wall of either the first component 61 or the third component 63. The inner wall of the auxiliary body 81 has a horizontal vent hole, and the auxiliary body 81 is open to... The auxiliary plate 82 is movably engaged with the air outlet. One side wall of the auxiliary plate 82 abuts against the other side wall of a set of first components 61 or a set of third components 63. Several air inlets are provided on the lower side wall of the auxiliary body 81, and the auxiliary bolt 83 is threadedly connected to the end of the auxiliary plate 82 through the air inlets of the auxiliary body 81. Two auxiliary bolts 83 are provided for each auxiliary plate 82. The auxiliary bolts 83 are used to achieve stable assembly of the auxiliary body 81 and the auxiliary plate 82, thereby achieving splicing and fixing of the first component 61, the second component 62 and the third component 63.
[0032] Example 3, based on Example 2, such as Figures 7-9 The fixing component 6 also includes a limiting component 7. Each of the first component 61 and the three third components 63 has a limiting component 7 inside. Two symmetrically arranged limiting components 7 form a group. Each group of limiting components 7 corresponds to an auxiliary component 8, further improving the clamping and fixing effect on the three-core cable 5. Figures 11-14The limiting component 7 includes an outer limiting membrane 71, an inner limiting membrane 72, and a limiting tube 73. An outer limiting groove is formed on the outer wall of the first component 61 or the third component 63, and one side of the outer limiting membrane 71 is fixedly embedded in the inner wall of the outer limiting groove. The other side of the outer limiting membrane 71 can abut against the inner wall of the auxiliary body 81. The outer limiting membrane 71 is quarter-annular and filled with gas. A tension spring is provided inside the outer limiting membrane 71, which can stretch the outer limiting membrane 71 to reduce the impact of the limiting component 7 on the three-core cable 5 during installation. An inner limiting groove is formed on the inner wall of the first component 61 or the third component 63, and one side of the inner limiting membrane 72 is fixedly embedded in the inner wall of the inner limiting groove. The other side of the inner limiting membrane 72... The inner limiting membrane 72 is in the shape of a half-ring and is filled with gas. The inner limiting membrane 72 is equipped with a compression spring inside, which can contract the inner limiting membrane 72 to reduce the impact of the limiting component 7 on the three-core cable 5 during installation. The limiting tube 73 is fixedly sleeved inside the first component 61 or the third component 63, and the two ends of the limiting tube 73 are fixedly connected to the outer limiting membrane 71 and the inner limiting membrane 72, respectively. Thus, after the auxiliary component 8 is sleeved, the outer limiting membrane 71 is compressed and the inner limiting membrane 72 is expanded, thereby enabling precise fixation of one part of the protective layer 51 and the three core wires 52, further improving the snap-fit fixing effect of the three-core cable 5.
[0033] Example 4, based on Example 3, such as Figures 3-5 Airflow pipes are provided inside the bottom and top of the cable box 211. The two airflow pipes are symmetrically arranged, with the lower airflow pipe used for air intake and the upper airflow pipe used for air exhaust, so that there is an airflow moving from bottom to top inside the cable box 211 to dissipate heat from the three-core cable 5.
[0034] like Figures 1-2 The main housing 11 has heat dissipation holes on its left and right walls. The main housing 11 has two heat dissipation modules 3 inside, which are located on both sides of the electrical module 2. One end of the heat dissipation module 3 is connected to the heat dissipation hole of the main housing 11, and the other end of the heat dissipation module 3 is connected to the airflow pipe below. The heat dissipation module 3 actively discharges gas into the cable box 211, which can provide power for the gas flow that moves from bottom to top in the cable box 211.
[0035] The working principle of this invention is as follows: During the assembly of the ring main unit, the end of the three-core cable 5 is first passed through the access hole into the cable box 211, and the end of the cable sleeve 4 is passed through the outlet hole into the cable box 211. Then, the end of the protective layer 51 is cut off, the end of the core wire 52 is longer than the end of the protective layer 51, and the ends of the three core wires 52 are connected to the end of the cable sleeve 4 through the cable plug to realize the connection between the three-core cable 5 and the cable sleeve 4.
[0036] Next, install the fixing component 6: First, align the T-slot of the first component 61 with the protective layer 51, and align the vertical slots of the three second components 62 on it with the core wire 52. Then, align and splice the two first components 61, and align and splice the two second components 62. Finally, use the auxiliary component 8 to fix one set of first components 61. After completing the splicing of the first components 61 and the second components 62, successively attach the three sets of third components 63 to the corresponding second components 62 and the cable sleeve 4, and fix the I-shaped... The slot is aligned with the core wire 52, and finally the auxiliary component 8 is used to fix a set of third components 63. At this time, the bottom end of the first component 61 abuts against the bottom end of the inside of the cable box 211, and the top end of the third component 63 abuts against the top end of the inside of the cable box 211, effectively realizing the snap-fit fixation of the three-core cable 5, so as to control the thermal expansion and contraction of the three-core cable 5, ensuring that the connection between the three-core cable 5 and the cable sleeve 4 is in a natural docking state, improving the protection of the three-core cable 5 and the cable sleeve 4, and reducing the possibility of overheating and damage due to poor contact.
[0037] During the fixing of auxiliary component 8, the auxiliary body 81 first snaps onto the outer side of the first component 61 or the third component 63, and pushes the outer limiting membrane 71 to compress and the inner limiting membrane 72 to expand, thereby accurately snapping and fixing the protective layer 51 and the core wire 52 respectively, further improving the snapping and fixing effect of the three-core cable 5. Then, the auxiliary plate 82 moves along the air outlet of the auxiliary body 81 until the auxiliary plate 82 touches the other side of the outer side of the first component 61 or the third component 63. Finally, it is fixed by the thread of the auxiliary bolt 83. Since the auxiliary body 81 and the outer limiting membrane 71 are fully attached, the friction between the two can be increased, further improving the installation and fixing effect of the auxiliary component 8.
[0038] During the assembly of the ring main unit, if the temperature inside the cable box 211 is high, the heat dissipation module 3 is activated to supply air into the cable box 211, generating an upward airflow inside the cable box 211 to dissipate heat from the three-core cable 5. As the airflow rises, the auxiliary body 81 captures the vertically moving airflow through the air inlet and changes the trajectory of the airflow through the air outlet, allowing the airflow to pass horizontally through the fixed component 6 and the three-core cable 5, further improving the heat dissipation effect on the three-core cable 5.
[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A smart grid user external primary and secondary integrated ring network box, characterized in that, include: The cable box (211) has an access hole at its bottom end and an outlet hole at its top end. Cable sleeve (4), the end of which passes through the outlet hole of the cable box (211); Three-core cable (5), the end of which passes through the access hole of the cable box (211); The fixing component (6) has its bottom end in contact with the bottom end of the cable box (211) and its top end in contact with the top end of the cable box (211). The end of the cable sleeve (4) is in a docking state with the end of the three-core cable (5). The fixing component (6) is movably snapped onto the outside of the cable sleeve (4) and the three-core cable (5). The fixing component (6) is used to snap and fix the three-core cable (5) to ensure that the connection between the three-core cable (5) and the cable sleeve (4) is in a natural docking state.
2. The smart grid user external primary and secondary integrated ring network box according to claim 1, characterized in that, The cable sleeve (4) is vertically arranged at the bottom of the air box (22). Three cable sleeves (4) form a group, and a group of cable sleeves (4) are arranged in a linear array.
3. The smart grid user external primary and secondary integrated ring network box according to claim 2, characterized in that, The number of access holes corresponds to the number of three-core cables (5), the number of outlet holes corresponds to the number of cable sleeves (4), and the number of cable sleeves (4) is three times the number of three-core cables (5); The three-core cable (5) includes a protective layer (51) and core wires (52), and three core wires (52) are sleeved inside the protective layer (51). The ends of the three core wires (52) are provided with cable connectors, and the ends of the core wires (52) are inserted into the ends of the cable sleeve (4) through the cable connectors.
4. The smart grid user external primary and secondary integrated ring network box according to claim 3, characterized in that, The fixing component (6) includes: The first component (61) has two first components (61) symmetrically arranged on both sides of the three-core cable (5), and the two first components (61) spliced together form a group. A T-shaped groove is opened in the middle of the first component (61), and the protective layer (51) and the core wire (52) are located in the T-shaped groove of the first component (61). The diameter of the T-shaped groove is adapted to the size of the protective layer (51) on which the core wire (52) is sleeved. The second component (62) is fixedly sleeved at the top end of the first component (61) and the bottom end of the second component (62), and the two second components (62) spliced together form a group. A group of second components (62) corresponds to a cable sleeve (4). A vertical groove is opened in the middle of the second component (62), and the core wire (52) is located in the vertical groove of the second component (62). The diameter of the vertical groove is adapted to the size of the core wire (52). The third component (63) is sleeved between the top end of the second component (62) and the bottom end of the cable sleeve (4), and the two third components (63) spliced together form a group. The group of third components (63) and the group of second components (62) are perpendicular to each other. The middle part of the third component (63) is provided with an I-shaped groove, and the core wire (52) is located in the I-shaped groove of the third component (63). The diameter of the I-shaped groove is adapted to the size of the core wire (52). An auxiliary component (8) is provided on the outside of a group of first components (61) and three groups of third components (63). The limiting component (7) is provided inside the first component (61) and the three third components (63), and two limiting components (7) arranged symmetrically constitute a set. A set of limiting components (7) corresponds to an auxiliary component (8).
5. The smart grid user external primary and secondary integrated ring network box according to claim 4, characterized in that, The bottom end of the first component (61) abuts against the bottom end of the inside of the cable box (211), and the top end of the third component (63) abuts against the top end of the inside of the cable box (211); Horizontal air holes are opened on the wall surfaces of the first component (61), the second component (62) and the third component (63).
6. The smart grid user external primary and secondary integrated ring network box according to claim 5, characterized in that, The auxiliary component (8) includes: The auxiliary body (81) is U-shaped, and the inner wall of the auxiliary body (81) is movably connected to one side wall of a set of first components (61) or a set of third components (63). The auxiliary plate (82) has a horizontal air vent on the inner wall of the auxiliary body (81), and the auxiliary body (81) is movably connected to the auxiliary plate (82) through the air vent. One side wall of the auxiliary plate (82) abuts against the other side wall of a set of first components (61) or a set of third components (63). The auxiliary bolt (83) has several air inlets on the lower side wall of the auxiliary body (81), and the auxiliary bolt (83) is threaded to the end of the auxiliary plate (82) through the air inlets of the auxiliary body (81). Each auxiliary plate (82) is provided with two auxiliary bolts (83).
7. The smart grid user external primary and secondary integrated ring network box according to claim 6, characterized in that, The limiting component (7) includes: The outer limiting membrane (71) has a limiting groove on the outer side wall of the first component (61) or the third component (63), and one side of the outer limiting membrane (71) is fixedly embedded in the inner wall of the limiting groove. The other side of the outer limiting membrane (71) can abut against the inner side wall of the auxiliary body (81). The outer limiting membrane (71) is a quarter ring and is filled with gas. The outer limiting membrane (71) is provided with a tension spring inside. The inner limiting membrane (72) has a limiting groove on the inner wall of the first component (61) or the third component (63), and one side of the inner limiting membrane (72) is fixedly embedded in the inner wall of the limiting groove. The other side of the inner limiting membrane (72) can abut against the outer wall of the protective layer (51) or the core wire (52). The inner limiting membrane (72) is half annular and is filled with gas. The inner limiting membrane (72) is provided with a compression spring inside. The limiting tube (73) is fixedly sleeved inside the first component (61) or the third component (63), and the two ends of the limiting tube (73) are fixedly connected to the outer limiting membrane (71) and the inner limiting membrane (72) respectively.
8. The smart grid user external primary and secondary integrated ring network box according to claim 7, characterized in that, Both ends of the cable box (211) are movably latched with a cable box door (212). The cable box (211) and cable box door (212) are components of the cable box (21). An air box (22) is provided at the rear of the upper end of the cable box (21). A mechanism box (23) and an instrument box (24) are provided at the front of the upper end of the cable box (21). The mechanism box (23) is located below the instrument box (24). One cable box (21), one air box (22), one mechanism box (23) and one instrument box (24) constitute a set of electrical modules (2), and several sets of electrical modules (2) are arranged in a linear array. Airflow pipes are provided inside the bottom and top of the cable box (211). The two airflow pipes are symmetrically arranged, with the lower airflow pipe used for air intake and the upper airflow pipe used for air exhaust.
9. The smart grid user external primary and secondary integrated ring network box according to claim 8, characterized in that, The electrical module (2) is placed inside the main housing (11). The bottom of the main housing (11) is provided with a bottom plate (12) and the top of the main housing (11) is provided with an upper top plate (13). The main housing (11) is hinged with a main door (14) at the front and rear. The main box (11), the lower bottom plate (12), the upper top plate (13) and the main box door (14) are the components of the working mechanism (1).
10. The smart grid user external primary and secondary integrated ring network box according to claim 9, characterized in that, The main housing (11) has heat dissipation holes on its left and right walls. The main housing (11) has two heat dissipation modules (3) inside, and the two heat dissipation modules (3) are located on both sides of the electrical module (2). One end of the heat dissipation module (3) is connected to the heat dissipation hole of the main housing (11), and the other end of the heat dissipation module (3) is connected to the airflow pipe below.