Highly integrated primary and secondary fusion ring network box
By designing fireproof belts and fire extinguishing systems within the ring network box, and utilizing sensors to drive the fireproof belts to block airflow and automatically extinguish the fire, the problem of fire spread was solved, achieving protection of electrical components and rapid fire suppression.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG PUCHENG ELECTRIC CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-24
AI Technical Summary
The fire was caused by aging wiring in the electrical components inside the ring main unit. The fire could easily spread, damage other electrical components, and increase the risk of fire.
The system is designed with firebreaks and fire extinguishing bags. When a sensor detects a sharp rise in temperature, it drives a sliding strip to drop the firebreak, sealing the containment slot, restricting airflow, and automatically extinguishing the fire when necessary.
It effectively prevents the fire from spreading, reduces damage to other electrical components, improves the speed of fire extinguishing, reduces the possibility of fire expansion, and maintains normal heat dissipation of equipment.
Smart Images

Figure CN120657566B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of ring main units, and in particular to a highly integrated primary and secondary fusion ring main unit. Background Technology
[0002] A primary and secondary integrated ring main unit is a complete set of power distribution equipment that integrates primary equipment (such as switchgear and circuit breakers) with secondary equipment (such as protection, measurement and control equipment) to improve the automation level and operational reliability of the power distribution network.
[0003] In related technologies, the ring main unit includes a cabinet and a cabinet door. The cabinet door is rotatably connected to the cabinet. The cabinet has a receiving slot for placing power supply components and a heat dissipation hole that connects to the receiving slot.
[0004] Most ring main units are installed outdoors. If the electrical components inside the ring main unit catch fire due to aging wiring, other electrical components inside the ring main unit are also easily damaged because they are also inside the ring main unit, affecting the normal use of the ring main unit. In some cases, other electrical components may also catch fire, exacerbating the fire situation. Summary of the Invention
[0005] To address the issue of easily damaged electrical components inside the ring main unit, this application provides a highly integrated primary and secondary fusion ring main unit.
[0006] This application provides a highly integrated primary and secondary fusion ring network box, which adopts the following technical solution:
[0007] A highly integrated primary and secondary fusion ring main unit includes a cabinet and a cabinet door. The cabinet door is rotatably connected to the cabinet. The cabinet has a receiving slot for placing electrical components. A sliding strip is slidably connected to the cabinet, and the sliding strip has multiple drop holes distributed along the length of the sliding strip. The cabinet has a driving structure for moving the sliding strip. The driving structure is activated when the temperature inside the receiving slot rises sharply. Multiple fireproof strips are rotatably connected to the cabinet. The two ends of the fireproof strips abut against the slot wall along the length of the receiving slot and the cabinet door, respectively. The fireproof strips can pass through the drop holes. When a fire occurs inside the cabinet, the fireproof strips can fall from the drop holes, and two adjacent fireproof strips can shield the electrical components in between.
[0008] By adopting the above technical solution, if a fire breaks out inside the cabinet, the internal temperature will rise sharply. At this time, the drive structure can move the sliding strip, allowing the fireproof strip to pass through the drop hole and fall smoothly. In addition, the two ends of the fireproof strip abut against the groove wall along the length of the receiving groove and the cabinet door, respectively, so that the fireproof strip can restrict the air circulation inside the cabinet, reduce the amount of oxygen from other parts entering the fire area and causing a larger fire. This allows two adjacent fireproof strips to protect the electrical components in between, preventing the burning electrical components from transmitting the fire source to other electrical components, reducing the loss of the ring main unit, and reducing the possibility of damage to other electrical components.
[0009] Optionally, multiple fire extinguishing bags are slidably connected in the receiving slot, the fire extinguishing bags are located between two adjacent firebreaks, and multiple blades are provided in the receiving slot, the blades are located on the moving path of the fire extinguishing bags; when the fire extinguishing bag comes into contact with the blades, the fire extinguishing bag can extinguish the fire inside the receiving slot.
[0010] By adopting the above technical solution, when a fire breaks out inside the cabinet, the fire extinguishing bag is positioned between two adjacent firebreaks, and the staff can slide the fire extinguishing bag. Since the blade is located on the moving path of the fire extinguishing bag, the blade can cut through the fire extinguishing bag, so that the fire extinguishing bag can extinguish the fire inside the containment tank and reduce the impact of the fire on the ring network box.
[0011] Optionally, the cabinet has multiple through holes that connect to the receiving slots. The through holes are located between two adjacent fireproof strips, and a movable strip is slidably connected to the wall of the through hole. When the inside of the cabinet catches fire, the movable strip can protrude from the through hole.
[0012] By adopting the above technical solution, when a fire breaks out inside the cabinet, the fireproof strip falls down. At this time, the air inside the cabinet expands due to heat. Since the moving strip is slidably connected to the perforation, the air can drive the moving strip to protrude out of the perforation. This allows the staff to directly observe which part of the moving strip protrudes from the cabinet and know which part of the cabinet is on fire, enabling the staff to more effectively extinguish the fire.
[0013] Optionally, a movable spring is provided in the receiving groove, and a movable plate is provided on the movable spring. The movable spring drives the movable plate to move away from the fire extinguishing bag, and the movable strip is located on the movement path of the fire extinguishing bag. When the movable strip protrudes through the hole, the movable strip is not on the movement path of the fire extinguishing bag, and the fire extinguishing bag can squeeze the blade.
[0014] By adopting the above technical solution, since the moving strip is located on the movement path of the fire extinguisher bag, the moving strip can restrict the movement of the fire extinguisher bag towards the blade, thus preventing the fire extinguisher bag from being cut by the blade under normal circumstances. If a fire breaks out inside the cabinet, the moving strip protrudes from the cabinet. At this time, the moving strip is not on the movement path of the fire extinguisher bag, allowing the moving spring to drive the moving plate to move. The moving plate then moves the fire extinguisher bag towards the blade, enabling the blade to cut the fire extinguisher bag. This allows the fire extinguisher bag to automatically extinguish the fire without the need for staff to manually slide the fire extinguisher bag, further improving the speed of fire extinguishing.
[0015] Optionally, the movable strip is provided with a baffle that can block the opening of the perforation.
[0016] By adopting the above technical solution, the opening of the perforation is blocked by a baffle, so that when it rains outside, rainwater is not easy to directly enter the receiving groove from the perforation, thus reducing the corrosion of electrical components by external rainwater.
[0017] Optionally, the cabinet body is provided with multiple heat dissipation holes, all of which are connected to a receiving groove. Multiple limiting plates are slidably connected to the receiving groove. The limiting plates are used to block the heat dissipation holes. The limiting plates are provided with limiting blocks, which are located on the moving path of the fireproof belt. When the fireproof belt falls, the limiting plates block the openings of the heat dissipation holes.
[0018] By adopting the above technical solution, when the fireproof strip falls, the limiting block is located on the moving path of the fireproof strip, allowing the fireproof strip to move through the limiting block and drive the limiting plate to move. This allows the limiting plate to block the heat dissipation holes, reducing air exchange between the inside and outside of the cabinet, making it difficult for oxygen in the containment tank to be replenished, and reducing the possibility of the fire spreading further. When the inside of the cabinet is not on fire, the limiting plate does not block the heat dissipation holes, allowing the heat dissipation holes to maintain air circulation between the inside and outside of the cabinet, thus maintaining the normal heat dissipation function of the ring main unit.
[0019] Optionally, the limiting block is provided with a first magnet, and the fireproof strip is provided with a second magnet, the second magnet attracting the first magnet; when the fireproof strip is reset, the limiting plate does not block the heat dissipation holes.
[0020] By adopting the above technical solution, when the fireproof strip is reset, the second magnet attracts the first magnet, allowing the fireproof strip to move the limit block, so that the limit plate does not block the heat dissipation holes, allowing air circulation between the inside and outside of the cabinet.
[0021] Optionally, the fireproof belt is provided with a rotating gear, and the cabinet is provided with an operating belt. The rotating gear is meshed with the operating belt, and the operating belt is used to drive the fireproof belt to reset.
[0022] By adopting the above technical solution, the rotating gear is engaged with the operating belt. When the operator rotates the operating belt, the operating belt can drive the rotating gear to rotate, so that multiple fireproof belts can be reset. This eliminates the need for the operator to rotate each individual fireproof belt, reducing the operator's steps and achieving synchronous reset of multiple fireproof belts.
[0023] Optionally, the fireproof strip is provided with a movable block, and the wall of the receiving groove is provided with multiple movable grooves, and the movable block can slide in the movable grooves.
[0024] By adopting the above technical solution, the movable block slides in the movable groove, making it less likely for the fireproof belt to bend during the descent, allowing the fireproof belt to fall stably and preventing the fireproof belt from failing to seal the electrical components in the middle due to bending.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. If a fire breaks out inside the cabinet, the internal temperature will rise rapidly. At this time, the drive structure can move the sliding strip to align the perforation with the fireproof strip, allowing the fireproof strip to fall smoothly. In addition, the two ends of the fireproof strip abut against the two sides of the receiving groove along the length direction, which restricts the air circulation inside the cabinet. This allows two adjacent fireproof strips to protect the electrical components in the middle, preventing the burning electrical components from transmitting the fire source to other electrical components, reducing the loss of the ring main unit, and reducing the possibility of damage to other electrical components.
[0027] 2. Because the moving strip is located on the movement path of the fire extinguisher bag, it can restrict the fire extinguisher bag from moving towards the blade, thus preventing the fire extinguisher bag from being cut by the blade under normal circumstances. If the fire is inside the cabinet, the moving strip protrudes from the cabinet. At this time, the moving strip is not on the movement path of the fire extinguisher bag, allowing the moving spring to drive the moving plate to move. The moving plate then moves the fire extinguisher bag towards the blade, enabling the blade to cut the fire extinguisher bag. This allows the fire extinguisher bag to automatically extinguish the fire without the need for manual sliding, further improving the speed of fire extinguishing. Attached Figure Description
[0028] Figure 1 This is a structural schematic diagram of an embodiment of this application;
[0029] Figure 2 It is along Figure 1 A partial sectional view of line AA in the middle;
[0030] Figure 3 This is a schematic diagram of the structure highlighting the slider in the embodiments of this application;
[0031] Figure 4This is a schematic diagram of the structure of the limiting plate in the embodiments of this application;
[0032] Figure 5 yes Figure 2 Enlarged diagram of part B.
[0033] Reference numerals: 1. Cabinet body; 11. Receiving slot; 12. Placement slot; 121. Rotating rod; 122. Fireproof strip; 123. Movable block; 124. Movable slot; 13. Rotating gear; 131. Operating belt; 132. Operating block; 14. Drive structure; 141. Sliding bar; 142. Drop hole; 15. Heat dissipation hole; 151. Limiting slot; 152. Limiting plate; 153. Limiting block; 154. First magnet; 155. Second magnet; 16. Moving spring; 161. Moving plate; 162. Fire extinguisher; 163. Blade; 164. Perforation; 165. Moving bar; 166. Baffle; 2. Cabinet door. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0035] This embodiment discloses a highly integrated primary and secondary fusion ring network box. (Refer to...) Figure 1 and Figure 2 A highly integrated primary and secondary integrated ring main unit includes a cabinet 1 and a cabinet door 2, the cabinet door 2 being rotatably connected to the cabinet 1. The cabinet 1 has a receiving slot 11 for placing power supply components, extending along the length of the cabinet 1. In this application, the ring main unit highly integrates primary and secondary equipment to form a complete power supply system.
[0036] Reference Figure 1 and Figure 2 Multiple placement slots 12 are provided on the surface of the cabinet 1. These slots are arranged in an array along the length of the cabinet 1 and are all connected to the receiving slot 11. A rotating rod 121 is rotatably connected inside each placement slot 12. A fireproof strip 122 is fixedly connected to the outer surface of the rotating rod 121. One end of the fireproof strip 122 abuts against the wall of the receiving slot 11 along the length of the cabinet 1, and the other end abuts against the cabinet door 2. This allows the fireproof strip 122 to restrict airflow and the spread of fire inside the receiving slot 11, thus protecting the intermediate electrical components from the fireproof strips 122.
[0037] Reference Figure 2 and Figure 3 A movable block 123 is fixedly connected to the end face of the fireproof strip 122 away from the rotating rod 121. Multiple movable slots 124 are provided on the wall of the receiving slot 11. The movable slots 124 extend in the vertical direction and are arranged in an array along the length of the cabinet 1.
[0038] Reference Figure 3 A rotating gear 13 is fixedly connected to the end face of the rotating rod 121. An operating groove is provided on the cabinet 1, which connects to multiple placement grooves 12 and extends along the length of the cabinet 1. An operating belt 131 is rotatably connected inside the operating groove, and multiple rotating gears 13 are meshed with the operating belt 131.
[0039] Reference Figure 1 and Figure 3 The cabinet 1 has an operating hole that connects to the operating slot. An operating block 132 is fixedly connected to the operating belt 131. The operator can rotate the operating belt 131 by rotating the operating block 132, thereby allowing the operating belt 131 to drive multiple fireproof belts 122 to move through the rotating gear 13.
[0040] Reference Figure 2 and Figure 3 The cabinet 1 is equipped with a drive structure 14, which includes a drive component and multiple sensors. The sensors are used to detect the temperature inside the cabinet 1 and are fixedly connected to the wall of the receiving groove 11. The drive component is a drive cylinder. The drive cylinder is fixedly connected to the wall of the receiving groove 11, and the sensors are electrically connected to the drive cylinder. A sliding strip 141 is fixedly connected to the drive shaft of the drive cylinder, and the sliding strip 141 extends along the length of the cabinet 1. Multiple drainage holes 142 are formed on the surface of the sliding strip 141 facing the ground. The multiple drainage holes 142 are arranged in an array along the length of the sliding strip 141, and one end of the fireproof strip 122 passes through the drainage holes 142.
[0041] Reference Figure 2 and Figure 3 When a fire breaks out inside cabinet 1, the sensor detects a rapid increase in temperature and activates the drive cylinder. The drive cylinder moves the sliding strip 141, with the drop hole 142 located directly below the fireproof strip 122. This allows the fireproof strip 122 to fall through the drop hole 142, protecting the electrical components between adjacent fireproof strips 122 and reducing the spread of fire to other electrical components. When there is no fire inside cabinet 1, the drive cylinder is not activated. In this case, the sliding strip 141 blocks the openings of multiple placement slots 12, meaning the sliding strip 141 abuts against the fireproof strip 122, preventing it from falling.
[0042] Reference Figure 2 and Figure 4The cabinet 1 has multiple ventilation holes 15, all of which are connected to the receiving groove 11, and the ventilation holes 15 are divided into multiple groups. When the fireproof strip 122 is in the fallen state, each group of ventilation holes 15 is located between two adjacent fireproof strips 122; or each group of ventilation holes 15 is located between the fireproof strip 122 and the groove wall of the receiving groove 11, thus separating the fireproof strip 122 from different groups of ventilation holes 15. Multiple limiting grooves 151 are provided on the groove wall of the receiving groove 11, each limiting groove 151 connecting to a different group of ventilation holes 15. Limiting plates 152 are slidably connected to the groove wall of the limiting grooves 151, and the limiting plates 152 can block the ventilation holes 15. When the limiting plate 152 is only subjected to gravity, the limiting plate 152 does not block the ventilation holes 15.
[0043] Reference Figure 3 and Figure 4 A limiting block 153 is fixedly connected to the surface of the limiting plate 152 away from the heat dissipation hole 15. A first magnet 154 is fixedly connected to the surface of the limiting block 153, and the limiting block 153 is located on the moving path of the fireproof strip 122. A second magnet 155 is fixedly connected to the surface of the fireproof strip 122, and the second magnet 155 can attract the first magnet 154. When the fireproof strip 122 falls, the fireproof strip 122 abuts against the limiting block 153, thereby blocking the heat dissipation hole 15. When the fireproof strip 122 returns to its original position, the fireproof strip 122 attracts the first magnet 154 through the second magnet 155, causing the limiting block 153 to move, thereby leaving the limiting plate 152 unblocked from the heat dissipation hole 15.
[0044] Reference Figure 3 and Figure 5 A movable spring 16 is fixedly connected to the wall of the placement trough 12, and a movable plate 161 is fixedly connected to the movable spring 16. A fire extinguishing bag 162 is detachably connected to the surface of the movable plate 161. The fire extinguishing bag 162 can absorb oxygen in the air, and the interior of the fire extinguishing bag 162 is made of carbon black and defective carbon materials.
[0045] Reference Figure 3 and Figure 5 Two blades 163 are fixedly connected to the wall of the placement slot 12. A movable spring 16 drives the fire extinguishing bag 162 to move in the direction of the blades 163, that is, the blades 163 are located in the moving path of the fire extinguishing bag 162. When the blades 163 pierce the fire extinguishing bag 162, the movable spring 16 is in a non-stressed state; when the fire extinguishing bag 162 does not come into contact with the blades 163, the movable spring 16 is in a compressed state.
[0046] Reference Figure 3 and Figure 5The cabinet 1 has multiple perforations 164, each connected to a different placement slot 12. A movable strip 165 is slidably connected to the wall of each perforation 164. The movable strip 165 protrudes beyond the perforation 164 and its movement path intersects with that of the fire extinguisher 162. A baffle 166 is fixedly connected to the surface of the movable strip 165, blocking the opening of the perforation 164 and thus preventing rainwater from entering.
[0047] Reference Figure 3 and Figure 5 When the inside of cabinet 1 catches fire, the heated air collides with the air, pushing the moving strip 165 out of the cabinet 1. At this time, the moving strip 165 is not in the moving path of the fire extinguishing bag 162, and the moving spring 16 can drive the fire extinguishing bag 162 to move, so that the blade 163 can cut the fire extinguishing bag 162. When the inside of cabinet 1 is not on fire, the moving strip 165 falls down due to gravity, that is, the moving strip 165 does not protrude out of the cabinet 1, and the moving strip 165 is in the moving path of the fire extinguishing bag 162. At this time, the fire extinguishing bag 162 does not come into contact with the blade 163.
[0048] The implementation principle of a highly integrated primary and secondary fusion ring network box in this application embodiment is as follows: When a fire occurs inside the cabinet 1, the sensor detects a sharp increase in temperature. The sensor activates the drive cylinder, which moves the sliding strip 141, causing the fireproof strip 122 to fall through the perforation 164. At this time, the fireproof strip 122 abuts against the limiting block 153 and moves, causing the limiting plate 152 to block the heat dissipation hole 15. Then, the moving strip 165 protrudes outside the cabinet 1, causing the moving spring 16 to move the fire extinguishing bag 162 through the moving plate 161, allowing the fire extinguishing bag 162 to be cut by the blade 163, thus opening the fire extinguishing bag 162 and making it usable.
[0049] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0050] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.
Claims
1. A highly integrated primary and secondary fusion ring main unit, comprising a cabinet (1) and a cabinet door (2), wherein the cabinet door (2) is rotatably connected to the cabinet (1), and the cabinet (1) is provided with a receiving slot (11) for placing power supply components, characterized in that: A sliding strip (141) is slidably connected to the cabinet (1). The sliding strip (141) has multiple drop holes (142) distributed along the length of the sliding strip (141). The cabinet (1) is provided with a drive structure (14) for driving the sliding strip (141) to move. The drive structure (14) is activated when the temperature inside the receiving tank (11) rises sharply. A plurality of fireproof strips (122) are rotatably connected to the cabinet (1). The two ends of the fireproof strips (122) abut against the tank wall and the cabinet door (2) along the length of the receiving tank (11) respectively. The fireproof strips (122) can pass through the drop holes (142). When the cabinet (1) catches fire, the drive structure (14) is activated, and the fireproof strips (122) can fall from the drop holes (142). Two adjacent fireproof strips (122) can shield the electrical components in the middle. Multiple fire extinguishing bags (162) are slidably connected in the receiving slot (11). The fire extinguishing bags (162) are located between two adjacent firebreaks (122). Multiple blades (163) are provided in the receiving slot (11). The blades (163) are located on the moving path of the fire extinguishing bags (162). When the fire extinguishing bag (162) abuts against the blades (163), the fire extinguishing bag (162) can extinguish the fire inside the receiving slot (11). The cabinet (1) has a through hole (164) that connects to the receiving groove (11). There are multiple through holes (164). The through holes (164) are located between two adjacent fireproof strips (122). A movable strip (165) is slidably connected to the hole wall of the through hole (164). When the inside of the cabinet (1) catches fire, the movable strip (165) can protrude from the through hole (164). The receiving groove (11) is provided with a moving spring (16), and the moving spring (16) is provided with a moving plate (161). The moving spring (16) drives the moving plate (161) to move away from the fire extinguishing bag (162). The moving strip (165) is located on the moving path of the fire extinguishing bag (162). When the moving strip (165) protrudes from the perforation (164), the moving strip (165) is not on the moving path of the fire extinguishing bag (162), and the fire extinguishing bag (162) can squeeze the blade (163).
2. The highly integrated primary and secondary fusion ring network box according to claim 1, characterized in that: The movable strip (165) is provided with a baffle (166) which can block the opening of the perforation (164).
3. The highly integrated primary and secondary fusion ring network box according to claim 1, characterized in that: The cabinet (1) has multiple heat dissipation holes (15), all of which are connected to a receiving groove (11). Multiple limiting plates (152) are slidably connected to the receiving groove (11). The limiting plates (152) are used to block the heat dissipation holes (15). The limiting plates (152) are provided with limiting blocks (153), which are located on the moving path of the fireproof strip (122). When the fireproof strip (122) falls, the limiting plates (152) block the opening of the heat dissipation holes (15).
4. The highly integrated primary and secondary fusion ring network box according to claim 3, characterized in that: The limiting block (153) is provided with a first magnet (154), and the fireproof strip (122) is provided with a second magnet (155). The second magnet (155) attracts the first magnet (154). When the fireproof strip (122) is reset, the limiting plate (152) does not block the heat dissipation hole (15).
5. The highly integrated primary and secondary fusion ring network box according to claim 1, characterized in that: The fireproof strip (122) is provided with a rotating gear (13), and the cabinet (1) is provided with an operating belt (131). The rotating gear (13) is meshed with the operating belt (131), and the operating belt (131) is used to drive the fireproof strip (122) to reset.
6. The highly integrated primary and secondary fusion ring network box according to claim 1, characterized in that: The fireproof strip (122) is provided with a movable block (123), and the receiving groove (11) has multiple movable grooves (124) on its groove wall. The movable block (123) can slide in the movable groove (124).
Citation Information
Patent Citations
High-voltage electrical cabinet
CN118117480A
Photovoltaic prefabricated cabin
CN119482047A