Environment-friendly high-voltage ring main unit

Abstract

The invention relates to the technical field of high-voltage electrical equipment, in particular to an environment-friendly high-voltage ring main unit, which comprises a cabinet body and a cabinet door, the cabinet body is used for installing electrical elements, the cabinet door is used for sealing the cabinet body, the cabinet door is rotatably arranged on the cabinet body, a driving assembly is arranged in the cabinet body, the driving assembly comprises a driving source, and the driving source is used for driving the cabinet body to rotate. The driving source is used for rotating and driving the cabinet door to be opened. Through the arrangement of the driving assembly and the driving source, the cabinet door is automatically opened, the operation efficiency is remarkably improved, manual intervention is reduced, and the device is particularly suitable for frequent maintenance scenes.

Description

Technical Field

[0001] The present application relates to the field of high-voltage electrical equipment, and in particular to an environmentally friendly high-voltage ring network cabinet. Background Art

[0002] High-voltage ring main units (HV RMUs) are key equipment for medium-voltage distribution networks in power systems, primarily responsible for the distribution, control, and protection of electrical energy. Traditional HV RMUs use sulfur hexafluoride (SF6) as an insulating and arc-extinguishing medium. However, SF6 is a potent greenhouse gas and poses a risk of leakage. With the advancement of technology and increasing environmental protection requirements, existing HV RMUs are increasingly using dry air, nitrogen (N2), or mixed gases (such as oxygen and nitrogen) instead of SF6 as an insulating medium.

[0003] A high-voltage ring main unit (RMU) cabinet consists of a cabinet body and a door. Various electrical components are installed within the cabinet body, and the door seals the cabinet body to protect them. Conventional cabinet doors are typically removably attached to the cabinet body using bolt assemblies, or require an operator to open and close the door using a key. This makes opening the door difficult when inspecting electrical components within the cabinet. Summary of the Invention

[0004] In order to improve the convenience of opening the cabinet door of an environmentally friendly high-voltage ring main unit, the present application provides an environmentally friendly high-voltage ring main unit.

[0005] This application provides an environmentally friendly high-voltage ring main unit, which adopts the following technical solutions: An environmentally friendly high-voltage ring network cabinet includes a cabinet body and a cabinet door. The cabinet body is used to install power supply components, and the cabinet door is used to close the cabinet body. The cabinet door is rotatably arranged on the cabinet body. A drive component is provided in the cabinet body, and the drive component includes a drive source. The drive source is used to rotate and drive the cabinet door to open.

[0006] By adopting the above-mentioned technical solution, this application involves the manufacturing of power electronic components. By setting up drive components and drive sources, the cabinet door of the ring network cabinet can be automatically opened, which significantly improves operational efficiency and reduces manual intervention. It is especially suitable for frequent maintenance scenarios.

[0007] Optionally, the rotation axis of the cabinet door extends along the height direction of the cabinet door, and the driving assembly also includes a transmission rod and a slider. The driving source is used to drive the transmission rod to rotate, and the rotation axis of the transmission rod extends along the height direction of the cabinet body. The transmission rod is rotatably connected to the slider, and the slider is slidably set on the cabinet door along the width direction of the cabinet door.

[0008] By adopting the above technical solution, the coordinated design of the transmission rod and the slider converts the rotation of the transmission rod into the rotation of the cabinet door. A simple mechanical structure is used to achieve stable force transmission, ensuring that the cabinet door opens smoothly and with uniform force, avoiding component wear due to mechanical stress concentration and extending its service life.

[0009] Optionally, a guide member is provided on the cabinet door, and a sliding groove is provided on the guide member extending along the width direction of the cabinet door. The slider is slidably set in the sliding groove. A limit member is provided on the guide member, and the limit member is located on the side of the slider facing the transmission rod, and the limit member is used to interfere with the slider.

[0010] By adopting the above technical solution, the combined structure of the guide member, the slide groove and the limit member can drive the cabinet door to close through the interference cooperation between the slider and the limit member when the driving source works in the reverse direction, thereby realizing the cabinet door closing driven by the driving source, improving safety and reliability, and further improving the degree of automation.

[0011] Optionally, the limiting member is slidably arranged on the guide member along the height direction of the cabinet door, and an unlocking member is provided on the cabinet door, and the unlocking member is used to drive the limiting member to move until the limiting member is out of contact with the slider.

[0012] By adopting the above technical solution, the linkage design of the sliding setting of the limit part and the unlocking part allows the limit state to be quickly released, so that the slider can be separated from the slide groove in the unlocked state, which is convenient for manual opening of the cabinet door in an emergency or when the drive source fails or is damaged, thereby enhancing the operational flexibility and emergency response capability.

[0013] Optionally, a telescopic groove extending along the height direction of the cabinet door is opened on the groove wall of the sliding groove, the limit member is slidably set in the telescopic groove, and a reset elastic member is provided between the limit member and the groove bottom wall of the telescopic groove. The reset elastic member is used to push the limit member to move in the direction away from the groove bottom wall of the telescopic groove, and the unlocking member is used to press the limit member back into the telescopic groove.

[0014] By adopting the above technical solution, the reset elastic member cooperates with the telescopic slot, so that the limit member automatically resets to the initial position after unlocking, reducing manual intervention, ensuring that the limit function continues to be effective, and reducing maintenance costs.

[0015] Optionally, the unlocking member is rotatably arranged on the side wall of the cabinet door facing the cabinet body, and the unlocking member includes an unlocking portion, and a guide slope is formed on the unlocking portion. When the unlocking member rotates, the guide slope rotates to slide into contact with the limiting member, pressing the limiting member back into the telescopic slot.

[0016] By adopting the above technical solution, the guiding slope design of the unlocking part can realize the smooth pressing back of the limit part through sliding resistance, reduce the friction resistance during the unlocking process, improve the smoothness of operation, and avoid mechanical jamming.

[0017] Optionally, a key is further included, the key including a transmission part, an unlocking groove is provided on the side wall of the unlocking member facing the cabinet door, a slot connected to the unlocking groove is provided through the cabinet door, the slot and the unlocking groove are both used for inserting the transmission part, and the dimension of the transmission part in the arrangement direction of the cabinet body and the cabinet door is less than or equal to the depth dimension of the unlocking groove.

[0018] By adopting the above technical solution, when the cabinet door is unlocked by the key, the transmission part of the key passes through the slot and is inserted into the unlocking slot. Since the depth of the key inserted into the unlocking slot matches the size of the transmission part, the cabinet door opens after the key is turned. At this time, the unlocking slot and the slot are staggered, and the transmission part conflicts with the cabinet door, making it impossible for the key to escape from the cabinet door. The operator can inspect the electrical components in the cabinet. After the inspection is completed, the cabinet door is closed and the key is reversed until the unlocking slot is aligned with the slot. The key can be pulled out, reducing the impact of key loss during the inspection on the normal closing of the cabinet door.

[0019] Optionally, a locking block is provided on the cabinet body, a locking groove is provided on the locking block, and a locking rod is provided on the cabinet door for sliding along the width direction of the cabinet door. When a fire occurs in the cabinet body, the locking rod slides to be inserted into the locking groove.

[0020] By adopting the above technical solution, the linkage mechanism of the locking rod and the locking slot can automatically lock the cabinet door when a fire occurs inside the cabinet, preventing the fire from spreading outward or the cabinet door from accidentally opening to cause harm to people outside the site. It can also prevent people outside the site from opening the cabinet door, thereby enhancing the fire isolation performance.

[0021] Optionally, an expansion cylinder is provided on the cabinet door, the expansion cylinder includes a piston rod, solid paraffin is installed in the cylinder body of the expansion cylinder, the expansion cylinder is used to drive the piston rod to move when heated, and the piston rod is fixedly connected to the locking rod.

[0022] By adopting the above technical solution, the expansion cylinder uses the thermal expansion characteristics of solid paraffin to drive the locking rod. No external power supply or sensor is required. It can quickly respond and lock the cabinet door in a high temperature environment, thereby improving the reliability of the fire protection function.

[0023] Optionally, it further includes a door frame, which is detachably connected to the cabinet body, the cabinet door is rotatably arranged on the cabinet body, and the locking block is arranged on the door frame.

[0024] By adopting the above technical solution, the detachable door frame design simplifies the installation and replacement process of the locking block, while facilitating the modular assembly of the cabinet door and cabinet body, reducing production and maintenance costs; in addition, after the fire is under control, the cabinet body can be opened for cleaning by removing the door frame, preventing violent disassembly of the cabinet body.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up drive components and drive sources, the cabinet door can be opened automatically, significantly improving operational efficiency and reducing manual intervention, which is especially suitable for frequent maintenance scenarios; 2. The linkage design of the sliding setting of the limiter and the unlocking part facilitates manual opening of the cabinet door in emergency situations or when the drive source fails or is damaged, enhancing operational flexibility and emergency response capabilities; 3. The linkage mechanism between the locking rod and the locking slot automatically locks the cabinet door when a fire occurs inside the cabinet, preventing the fire from spreading outward or the cabinet door from accidentally opening and causing harm to people outside the site. It can also prevent people outside the site from opening the cabinet door, thereby enhancing fire isolation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of an embodiment of the present application.

[0027] Figure 2 It is a rear cross-sectional view of the present application highlighting the drive assembly.

[0028] Figure 3 This is a rear cross-sectional view of the present application highlighting the resetting elastic member and the unlocking member.

[0029] Figure 4 It is a side sectional view of the present application highlighting the unlocking slot.

[0030] Figure 5 It is a rear cross-sectional view of the present application highlighting the expansion cylinder and the locking block.

[0031] Explanation of the accompanying drawings: 1. Cabinet body; 2. Cabinet door; 21. Slot; 3. Drive assembly; 31. Drive source; 32. Transmission rod; 33. Slider; 4. Guide member; 41. Slide groove; 411. Telescopic slot; 5. Limiting member; 6. Unlocking member; 61. Unlocking part; 611. Guide slope; 62. Unlocking slot; 7. Resetting elastic member; 8. Key; 81. Transmission part; 9. Locking block; 91. Locking slot; 100. Locking rod; 110. Expansion cylinder; 120. Piston rod; 130. Door frame; 140. Rotating shell; 150. Avoidance hole. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The embodiment of the present application discloses an environmentally friendly high-voltage ring network cabinet. Figure 1 The environmentally friendly high-voltage ring network cabinet includes a cabinet body 1, a door frame 130 and a cabinet door 2. The inner cavity of the cabinet body 1 is used for installing power supply components (electrical components are not shown in the figure). The door frame 130 is detachably connected to the cabinet body 1 through a bolt assembly. The cabinet door 2 is used to close the cabinet body 1. The cabinet door 2 is rotatably installed on the door frame 130 through door hinges.

[0034] Reference Figure 2 A drive assembly 3 is mounted within the cabinet 1 and is used to drive the cabinet door 2 to open and close. The drive assembly 3 comprises a drive source 31, a transmission rod 32, and a slider 33. The drive source 31 is a drive motor, and the drive shaft of the drive source 31 extends along the height of the cabinet 1. The transmission rod 32 is fixedly connected to the drive shaft of the drive source 31 and extends horizontally. The slider 33 is rotatably connected to the end of the transmission rod 32 that is away from the drive source 31.

[0035] Reference Figure 2 A guide member 4 is fixedly installed on the side wall of the cabinet door 2 close to the cabinet body 1. The guide member 4 is block-shaped and extends along the width direction of the cabinet door 2. A slide groove 41 extending along the extension direction of the guide member 4 is provided on the guide member 4, and the slider 33 is slidably installed in the slide groove 41.

[0036] Reference Figure 2 and Figure 3 A telescopic slot 411 is formed on the wall of the slide 41 near the bottom of the cabinet door 2. A limit member 5 is slidably mounted in the telescopic slot 411 along the height direction of the cabinet door 2. The limit member 5 is rod-shaped and extends along the width direction of the cabinet door 2. A return spring 7 is press-fitted between the limit member 5 and the bottom wall of the telescopic slot 411. The return spring 7 is a compression spring and is used to drive the limit member 5 to move in a direction away from the bottom wall of the telescopic slot 411. When the limit member 5 pops out of the telescopic slot 411, it acts as a limiting contact with the slider 33, preventing the slider 33 from exiting the slide 41 along the arrangement direction of the cabinet door 2 and the cabinet body 1. When the limit member 5 retracts into the telescopic slot 411, the slider 33 disengages from the limit member 5 and can exit the slide 41 along the arrangement direction of the cabinet door 2 and the cabinet body 1.

[0037] Reference Figure 3 A rotating housing 140 is fixedly mounted on the side wall of the cabinet door 2 near the cabinet body 1. A cylindrical unlocking member 6 is rotatably mounted within the rotating housing 140. A clearance hole 150 is formed through the outer circumference of the rotating housing 140 and extends along the outer circumference. The unlocking member 6 includes an unlocking portion 61 integrally formed on the outer circumference of the unlocking member 6. The clearance hole 150 allows the unlocking portion 61 to pass through and slide.

[0038] Reference Figure 3, the end of the limit member 5 close to the unlocking member 6 extends to the outside of the slide groove 41 and is located directly below the unlocking member 6. A guide slope 611 extending obliquely is formed on the side wall of the end of the unlocking portion 61 away from the avoidance hole 150, and the guide slope 611 is formed by a chamfering process. When the unlocking member 6 rotates, the guide slope 611 rotates to conflict with the limit member 5, and the unlocking member 6 continues to rotate, and the guide slope 611 slides and conflicts with the limit member 5, thereby pressing the limit member 5 back into the telescopic groove 411. In other embodiments, a transmission structure can be added to the cabinet door 2, and the unlocking member 6 drives the transmission assembly to move, thereby performing multi-point conflict with the limit member 5, ensuring that the limit member 5 is more stably returned to the telescopic groove 411.

[0039] Reference Figure 4 The unlocking member 6 has an unlocking groove 62 on its surface near the cabinet door 2, which extends along the arrangement direction of the cabinet door 2 and the cabinet body 1. The cabinet door 2 has a slot 21 extending along the arrangement direction of the cabinet door 2 and the cabinet body 1, which is connected to the unlocking groove 62.

[0040] Reference Figure 4 The environmentally friendly high-voltage ring network cabinet also includes a key 8, which includes a transmission part 81. The transmission part 81 is integrally formed on the outer peripheral surface of the end of the key 8 close to the cabinet body 1, and the slot 21 and the unlocking slot 62 are both for the transmission part 81 and the end of the key 8 to be inserted. The size of the transmission part 81 in the arrangement direction of the cabinet body 1 and the cabinet door 2 is smaller than the depth size of the unlocking slot 62. After the key 8 passes through the slot 21 and is inserted into the unlocking slot 62, it is rotated. At this time, the unlocking slot 62 is staggered with the slot 21, and the transmission part 81 conflicts with the cabinet door 2, making it impossible for the key 8 to escape from the cabinet door 2; the key 8 is reversed until the unlocking slot 62 is aligned with the slot 21, and the key 8 can be pulled out.

[0041] In other embodiments, the transmission rod 32 may be a telescopic rod. After the staff opens the cabinet door 2 using the key 8 , the transmission rod 32 may be retracted to avoid affecting the maintenance of the electrical components in the cabinet 1 .

[0042] Reference Figure 4 A locking block 9 is fixedly mounted on the door frame 130, and a locking groove 91 extending along the width direction of the cabinet door 2 is provided on the locking block 9. An expansion cylinder 110 is fixedly mounted on the side wall of the cabinet door 2 close to the cabinet body 1. The expansion cylinder 110 includes a piston rod 120 slidably mounted in the cylinder body of the expansion cylinder 110, and the piston rod 120 slides in the direction close to or away from the locking block 9. Solid paraffin is installed in the cylinder body of the expansion cylinder 110. When the solid paraffin is exposed to high temperature, its volume expands and pushes the piston rod 120 to slide. A locking rod 100 is fixedly connected to the piston rod 120. The locking rod 100 extends along the width direction of the cabinet door 2. When the piston rod 120 slides, it drives the locking rod 100 to slide, and the end of the locking rod 100 is inserted into the locking groove 91 to lock the cabinet door 2.

[0043] In other embodiments, a button can be installed on the bottom wall of the locking groove 91, and the button is electrically connected to the fire extinguishing facility in the cabinet 1. When the locking rod 100 is inserted into the locking groove 91, the button is triggered, thereby locking the cabinet door 2 and turning on the fire extinguishing equipment to extinguish the fire.

[0044] The implementation principle of an environmentally friendly high-voltage ring network cabinet in an embodiment of the present application is: when the staff needs to inspect and repair the electrical components in the cabinet body 1, the driving source 31 is triggered to start, the driving source 31 drives the transmission rod 32 to rotate, and the transmission rod 32 drives the slider 33 to rotate and slide in the slide groove 41, thereby pushing the cabinet door 2 to open; after the inspection is completed, the driving source 31 is triggered again to reverse, and the transmission rod 32 and the slider 33 pull the cabinet door 2 back to close.

[0045] If the driving source 31 fails or is damaged or other emergency situations occur and the cabinet door 2 needs to be opened manually, the staff inserts the transmission part 81 of the key 8 into the unlocking slot 62 through the slot 21, and rotates the key 8 90°. The key 8 drives the unlocking member 6 to rotate, and the unlocking part 61 presses the limit member 5 back into the telescopic slot 411. At this time, the slider 33 is disengaged from the interference of the limit member 5, and the staff can open the cabinet door 2, so that the slider 33 escapes from the slide slot 41; after the inspection is completed, the cabinet door 2 is closed, so that the slider 33 enters the slide slot 41, and the key 8 is reversed. The unlocking part 61 is disengaged from the interference with the limit member 5, and the reset elastic member 7 drives the limit member 5 to pop out of the telescopic slot 411. The limit member 5 interferes with and limits the slider 33.

[0046] If a fire occurs in the cabinet body 1, the high temperature will melt the paraffin in the expansion cylinder 110. After the paraffin melts, it will expand rapidly, driving the piston rod 120 to move, thereby driving the locking rod 100 to move until the locking rod 100 is inserted into the locking groove 91, locking the cabinet door 2 to prevent the cabinet door 2 from being accidentally opened due to heat or the staff from accidentally opening the cabinet door 2 without knowing it.

[0047] This application realizes automatic opening of the cabinet door 2 by setting a drive component 3, significantly improving operational efficiency and reducing manual intervention, and is particularly suitable for frequent maintenance scenarios.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An environmentally friendly high-voltage ring network cabinet, comprising a cabinet body (1) and a cabinet door (2), wherein the cabinet body (1) is used for installing power supply components, and the cabinet door (2) is used for sealing the cabinet body (1), characterized in that: The cabinet door (2) is rotatably mounted on the cabinet body (1). A driving assembly (3) is provided in the cabinet body (1). The driving assembly (3) comprises a driving source (31). The driving source (31) is used to rotate and drive the cabinet door (2) to open.

2. The environmentally friendly high-voltage ring main unit according to claim 1, characterized in that: The rotation axis of the cabinet door (2) extends along the height direction of the cabinet door (2), and the driving assembly (3) further includes a transmission rod (32) and a slider (33). The driving source (31) is used to drive the transmission rod (32) to rotate. The rotation axis of the transmission rod (32) extends along the height direction of the cabinet body (1). The transmission rod (32) is rotatably connected to the slider (33), and the slider (33) is slidably arranged on the cabinet door (2) along the width direction of the cabinet door (2).

3. The environmentally friendly high-voltage ring main unit according to claim 2, characterized in that: The cabinet door (2) is provided with a guide member (4), the guide member (4) is provided with a slide groove (41) extending along the width direction of the cabinet door (2), the slider (33) is slidably arranged in the slide groove (41), and the guide member (4) is provided with a limit member (5), the limit member (5) is located on the side of the slider (33) facing the transmission rod (32), and the limit member (5) is used to abut against the slider (33).

4. The environmentally friendly high-voltage ring main unit according to claim 3, characterized in that: The limiting member (5) is slidably arranged on the guide member (4) along the height direction of the cabinet door (2), and an unlocking member (6) is provided on the cabinet door (2). The unlocking member (6) is used to drive the limiting member (5) to move until the limiting member (5) is out of contact with the slider (33).

5. The environmentally friendly high-voltage ring main unit according to claim 4, characterized in that: A telescopic slot (411) extending in the height direction of the cabinet door (2) is provided on the slot wall of the sliding slot (41), the limiting member (5) is slidably arranged in the telescopic slot (411), a reset elastic member (7) is provided between the limiting member (5) and the slot bottom wall of the telescopic slot (411), the reset elastic member (7) is used to push the limiting member (5) to move in a direction away from the slot bottom wall of the telescopic slot (411), and the unlocking member (6) is used to press the limiting member (5) back into the telescopic slot (411).

6. The environmentally friendly high-voltage ring main unit according to claim 5, characterized in that: The unlocking member (6) is rotatably arranged on the side wall of the cabinet door (2) facing the cabinet body (1), and the unlocking member (6) includes an unlocking portion (61). A guiding inclined surface (611) is formed on the unlocking portion (61). When the unlocking member (6) rotates, the guiding inclined surface (611) rotates to slide against the limiting member (5), pressing the limiting member (5) back into the telescopic groove (411).

7. The environmentally friendly high-voltage ring main unit according to claim 6, characterized in that: The invention also includes a key (8), wherein the key (8) includes a transmission part (81), an unlocking slot (62) is provided on the side wall of the unlocking member (6) facing the cabinet door (2), and a slot (21) is provided on the cabinet door (2) and is connected to the unlocking slot (62), wherein both the slot (21) and the unlocking slot (62) are used for inserting the transmission part (81), and the dimension of the transmission part (81) in the arrangement direction of the cabinet body (1) and the cabinet door (2) is less than or equal to the depth dimension of the unlocking slot (62).

8. The environmentally friendly high-voltage ring main unit according to claim 1, characterized in that: The cabinet body (1) is provided with a locking block (9), the locking block (9) being provided with a locking groove (91), and the cabinet door (2) is provided with a locking rod (100) which is slidably provided along the width direction of the cabinet door (2); when a fire occurs in the cabinet body (1), the locking rod (100) slides to be inserted into the locking groove (91).

9. The environmentally friendly high-voltage ring main unit according to claim 8, characterized in that: An expansion cylinder (110) is provided on the cabinet door (2), the expansion cylinder (110) comprising a piston rod (120), solid paraffin being installed in the cylinder body of the expansion cylinder (110), the expansion cylinder (110) being used to drive the piston rod (120) to move when heated, and the piston rod (120) being fixedly connected to the locking rod (100).

10. The environmentally friendly high-voltage ring main unit according to claim 8, characterized in that: It also includes a door frame (130), the door frame (130) is detachably connected to the cabinet body (1), the cabinet door (2) is rotatably arranged on the cabinet body (1), and the locking block (9) is arranged on the door frame (130).

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