Environment-friendly high-voltage ring main unit

Abstract

The application relates to the technical field of high-voltage electrical equipment, in particular to an environment-friendly high-voltage ring network cabinet, which comprises a cabinet body and a cabinet door, the cabinet body is used for mounting power supply elements, the cabinet door is used for closing the cabinet body, the cabinet door is rotationally arranged on the cabinet body, a driving assembly is arranged in the cabinet body, and the driving assembly comprises a driving source, which is used for rotating and driving the cabinet door to open. The driving assembly and the driving source are arranged, the cabinet door is automatically opened, the operation efficiency is remarkably improved, manual intervention is reduced, and the environment-friendly high-voltage ring network cabinet is especially suitable for frequent maintenance scenes.

Description

Technical Field

[0001] This application relates to the field of high-voltage electrical equipment, and in particular to an environmentally friendly high-voltage ring main unit. Background Technology

[0002] High-voltage ring main units (HNMUs) are key equipment in power systems used in medium-voltage distribution networks, primarily for power distribution, control, and protection. Traditional HNMUs use sulfur hexafluoride (SF6) as insulation and arc-quenching medium, but SF6 is a strong greenhouse gas and poses a leakage risk. With advancements in technology and increasing environmental requirements, most existing HNMUs now use dry air, nitrogen (N2), or mixed gases (such as oxygen and nitrogen) instead of SF6 as insulation.

[0003] A high-voltage ring main unit consists of a cabinet and a door. Various electrical components are installed inside the cabinet, and the door is used to seal the cabinet and protect these components. In existing technology, the door is typically detachably mounted to the cabinet using bolt assemblies, or requires an operator to use a key to open and close it. Opening the door is cumbersome when maintenance of the electrical components inside the cabinet is needed. Summary of the Invention

[0004] To improve the ease of opening the cabinet door of the environmentally friendly high-voltage ring main unit, this 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 solution:

[0006] An environmentally friendly high-voltage ring main unit includes a cabinet body and a cabinet door. The cabinet body is used for the installation of electrical components, and the cabinet door is used to close the cabinet body. The cabinet door is rotatably mounted on the cabinet body. A drive assembly is provided inside the cabinet body. The drive assembly includes a drive source, which is used to rotate and drive the cabinet door to open.

[0007] By adopting the above technical solution, this application relates to the manufacturing of power electronic components. By setting up driving components and driving sources, the cabinet door of the ring main unit can be opened automatically, which significantly improves operating efficiency and reduces manual intervention, and is especially suitable for frequent maintenance scenarios.

[0008] Optionally, the rotation axis of the cabinet door extends along the height direction of the cabinet door, and the driving assembly further includes a transmission rod and a slider. The driving source is used to drive the transmission rod to rotate. The rotation axis of the transmission rod extends along the height direction of the cabinet body. The transmission rod and the slider are rotatably connected. The slider is slidably disposed on the cabinet door along the width direction of the cabinet door.

[0009] By adopting the above technical solution, the cooperative design of the transmission rod and the slider converts the rotation of the transmission rod into the rotation of the cabinet door. The simple mechanical structure achieves stable force transmission, ensuring that the cabinet door opens smoothly and the force is evenly distributed, avoiding component wear caused by mechanical stress concentration, and extending service life.

[0010] Optionally, the cabinet door is provided with a guide member, and the guide member has a groove extending along the width direction of the cabinet door. The slider is slidably disposed in the groove. The guide member is provided with a limiting member, which is located on the side of the slider facing the transmission rod and is used to abut against the slider.

[0011] By adopting the above technical solution, the combined structure of guide components, slides, and limiting components can drive the cabinet door to close through the contact cooperation between the slider and the limiting components when the drive source is working in reverse, thereby realizing the cabinet door being driven to close by the drive source, improving safety and reliability, and further enhancing the degree of automation.

[0012] Optionally, the limiting member is slidably mounted on the guide member along the height direction of the cabinet door, and the cabinet door is provided with an unlocking member, which is used to drive the limiting member to move until the limiting member disengages from the slider.

[0013] By adopting the above technical solution, the linkage design of the limiting component sliding setting and the unlocking component allows for quick release of the limiting state, so that the slider can disengage from the slide groove in the unlocked state, which facilitates manual opening of the cabinet door in emergency situations or when the drive source fails or is damaged, thereby enhancing the flexibility of operation and emergency response capabilities.

[0014] Optionally, the slide wall is provided with a telescopic groove extending along the height direction of the cabinet door, the limiting member is slidably disposed in the telescopic groove, and a reset elastic member is provided between the limiting member and the bottom wall of the telescopic groove. The reset elastic member is used to push the limiting member to move in a direction away from the bottom wall of the telescopic groove, and the unlocking member is used to press the limiting member back into the telescopic groove.

[0015] By adopting the above technical solution, the cooperation between the reset elastic element and the telescopic groove enables the limiting element to automatically reset to its initial position after unlocking, reducing manual intervention, ensuring the continuous effectiveness of the limiting function, and reducing maintenance costs.

[0016] Optionally, the unlocking component is rotatably mounted on the side wall of the cabinet door facing the cabinet body. The unlocking component includes an unlocking part with a guide slope formed on the unlocking part. When the unlocking component rotates, the guide slope rotates to slide against the limiting component, pressing the limiting component back into the telescopic groove.

[0017] By adopting the above technical solution, the guide slope design of the unlocking component enables the limit component to be smoothly pressed back through sliding contact, reducing frictional resistance during the unlocking process, improving operational smoothness, and avoiding mechanical jamming.

[0018] Optionally, it also includes a key, which includes a transmission part, and the unlocking part has an unlocking groove on the side wall facing the cabinet door. The cabinet door has a slot that communicates with the unlocking groove. Both the slot and the unlocking groove are used for the transmission part to be inserted. 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.

[0019] By adopting the above technical solution, when the cabinet door is unlocked by a key, the key's transmission part passes through the slot and inserts into the unlocking slot. Since the depth of the key's insertion 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 misaligned, and the transmission part abuts against the cabinet door, making it impossible for the key to be removed from the cabinet door. The operator can then inspect the electrical components inside the cabinet. After the inspection is completed, the cabinet door is closed, and the key is reversed until the unlocking slot and the slot are aligned, at which point the key can be removed. This reduces the impact of lost keys on the normal closing of the cabinet door during the inspection process.

[0020] Optionally, the cabinet is provided with a locking block, the locking block has a locking groove, and the cabinet door is slidably provided with a locking rod along the width direction of the cabinet door. When the cabinet is on fire, the locking rod slides into the locking groove.

[0021] By adopting the above technical solution, the linkage mechanism between the locking rod and the locking groove automatically locks the cabinet door when a fire breaks out inside the cabinet, preventing the fire from spreading outward or the cabinet door from being accidentally opened and causing harm to people outside the site. It also prevents people outside the site from opening the cabinet door, thus enhancing the fireproof isolation performance.

[0022] Optionally, the cabinet door is provided with an expansion cylinder, the expansion cylinder includes a piston rod, and solid paraffin is installed in the cylinder body of the expansion cylinder. The expansion cylinder is used to move the piston rod when heated, and the piston rod is fixedly connected to a locking rod.

[0023] By adopting the above technical solution, the expansion cylinder uses the thermal expansion characteristics of solid paraffin to drive the locking rod, without the need for external power supply or sensors. It can quickly respond and lock the cabinet door in high-temperature environments, thus improving the reliability of the fire protection function.

[0024] Optionally, it also includes a door frame, which is detachably connected to the cabinet body, the cabinet door is rotatably mounted on the cabinet body, and the locking block is located on the door frame.

[0025] By adopting the above technical solutions, 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 the cabinet body, reducing production and maintenance costs; in addition, after the fire is brought under control, the cabinet body can be opened by disassembling the door frame for cleaning, preventing the cabinet body from being forcibly disassembled.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By setting up drive components and drive sources, the cabinet door can be opened automatically, which significantly improves operating efficiency and reduces manual intervention, making it especially suitable for frequent maintenance scenarios;

[0028] 2. The sliding setting of the limit component and the linkage design of the unlocking component make it easy to manually open the cabinet door in case of emergency or failure of the drive source, thus enhancing the flexibility of operation and emergency response capability;

[0029] 3. The linkage mechanism between the locking rod and the locking groove automatically locks the cabinet door when a fire breaks out inside the cabinet, preventing the fire from spreading or the cabinet door from being accidentally opened and causing harm to people outside the site. It also prevents people outside the site from opening the cabinet door, thus enhancing the fireproof isolation performance. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0031] Figure 2 This is a rear sectional view highlighting the driving component in this application.

[0032] Figure 3 This is a rear sectional view highlighting the reset elastic element and the unlocking element in this application.

[0033] Figure 4 This is a side sectional view highlighting the unlocking slot in this application.

[0034] Figure 5 This is a rear sectional view highlighting the expansion cylinder and locking block in this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Cabinet body; 2. Cabinet door; 21. Slot; 3. Drive assembly; 31. Drive source; 32. Transmission rod; 33. Slider; 4. Guide component; 41. Slide groove; 411. Telescopic groove; 5. Limiting component; 6. Unlocking component; 61. Unlocking part; 611. Guide slope; 62. Unlocking groove; 7. Reset elastic component; 8. Key; 81. Transmission part; 9. Locking block; 91. Locking groove; 100. Locking rod; 110. Expansion cylinder; 120. Piston rod; 130. Door frame; 140. Rotating shell; 150. Clearance hole. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] This application discloses an environmentally friendly high-voltage ring main unit. (Refer to...) Figure 1The environmentally friendly high-voltage ring main unit 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 the installation of electrical components (electrical components are not shown in the figure). The door frame 130 is detachably connected to the cabinet body 1 by 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 by door hinges.

[0038] Reference Figure 2 A drive assembly 3 is installed inside the cabinet 1, which is used to drive the opening and closing of the cabinet door 2. The drive assembly 3 includes 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 direction 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 away from the drive source 31.

[0039] Reference Figure 2 A guide 4 is fixedly installed on the side wall of the cabinet door 2 near the cabinet body 1. The guide 4 is block-shaped and extends along the width direction of the cabinet door 2. A groove 41 extending along the extension direction of the guide 4 is provided on the guide 4. The slider 33 is slidably installed in the groove 41.

[0040] Reference Figure 2 and Figure 3 A telescopic groove 411 is formed on the groove wall near the bottom of the cabinet door 2. A limiting member 5 is slidably installed in the telescopic groove 411 along the height direction of the cabinet door 2. The limiting member 5 is rod-shaped and extends along the width direction of the cabinet door 2. A reset elastic member 7 is press-fitted between the limiting member 5 and the bottom wall of the telescopic groove 411. The reset elastic member 7 is a compression spring and is used to drive the limiting member 5 to move in a direction away from the bottom wall of the telescopic groove 411. When the limiting member 5 pops out of the telescopic groove 411, the limiting member 5 limits and abuts the slider 33, preventing the slider 33 from falling out of the telescopic groove 41 along the arrangement direction of the cabinet door 2 and the cabinet body 1. When the limiting member 5 retracts into the telescopic groove 411, the slider 33 disengages from the limiting member 5 and can exit the telescopic groove 41 along the arrangement direction of the cabinet door 2 and the cabinet body 1.

[0041] Reference Figure 3 A rotating shell 140 is fixedly installed on the side wall of the cabinet door 2 near the cabinet body 1. An unlocking component 6, cylindrical in shape, is rotatably installed inside the rotating shell 140. A clearance hole 150 extending along the outer circumference of the rotating shell 140 is formed through it. The unlocking component 6 includes an unlocking part 61, integrally formed on the outer circumference of the unlocking component 6. The clearance hole 150 allows the unlocking part 61 to pass through and slide.

[0042] Reference Figure 3The limiting member 5 extends beyond the slide groove 41 near the end of the unlocking member 6 and is located directly below the unlocking member 6. An inclined guide slope 611 is formed on the side wall of the end of the unlocking part 61 away from the clearance hole 150. The guide slope 611 is formed by a chamfering process. When the unlocking member 6 rotates, the guide slope 611 rotates to contact the limiting member 5. As the unlocking member 6 continues to rotate, the guide slope 611 slides against the limiting member 5, thereby pressing the limiting member 5 back into the telescopic groove 411. In other embodiments, a transmission structure can be added to the cabinet door 2, whereby the unlocking member 6 drives the transmission component to move, thereby causing multi-point contact with the limiting member 5 and ensuring that the limiting member 5 retracts more stably into the telescopic groove 411.

[0043] Reference Figure 4 The unlocking component 6 has an unlocking groove 62 on its surface near the cabinet door 2, and the unlocking groove 62 extends along the arrangement direction of the cabinet door 2 and the cabinet body 1. A slot 21 extending along the arrangement direction of the cabinet door 2 and the cabinet body 1 is provided through the cabinet door 2, and the slot 21 is connected to the unlocking groove 62.

[0044] Reference Figure 4 The environmentally friendly high-voltage ring main unit 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 near the cabinet body 1. The slot 21 and the unlocking groove 62 are both for inserting the transmission part 81 and the end of the key 8. The dimension of the transmission part 81 in the arrangement direction of the cabinet body 1 and the cabinet door 2 is smaller than the depth dimension of the unlocking groove 62. After the key 8 passes through the slot 21 and is inserted into the unlocking groove 62, it rotates. At this time, the unlocking groove 62 and the slot 21 are misaligned, and the transmission part 81 abuts against the cabinet door 2, so that the key 8 cannot be removed from the cabinet door 2. Reverse the key 8 until the unlocking groove 62 and the slot 21 are aligned, and the key 8 can be pulled out.

[0045] In other embodiments, the transmission rod 32 can be a telescopic rod, which can be retracted after the staff opens the cabinet door 2 with the key 8, so as to avoid affecting the maintenance of electrical components inside the cabinet 1.

[0046] Reference Figure 4 A locking block 9 is fixedly installed on the door frame 130, and a locking groove 91 extending along the width direction of the cabinet door 2 is formed on the locking block 9. An expansion cylinder 110 is fixedly installed on the side wall of the cabinet door 2 near the cabinet body 1. The expansion cylinder 110 includes a piston rod 120 slidably installed in the cylinder body of the expansion cylinder 110. The piston rod 120 slides in the direction of approaching or moving away from the locking block 9. Solid paraffin wax is installed in the cylinder body of the expansion cylinder 110. When the solid paraffin wax is subjected to high temperature, it melts and expands in volume, pushing 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. The end of the locking rod 100 is inserted into the locking groove 91 to lock the cabinet door 2.

[0047] In other embodiments, a button can be installed on the bottom wall of the locking groove 91. The button is electrically connected to the fire extinguishing equipment inside 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 activating the fire extinguishing equipment to extinguish the fire.

[0048] The implementation principle of an environmentally friendly high-voltage ring main unit according to this application embodiment is as follows: When the staff needs to repair the electrical components inside the cabinet 1, the drive source 31 is triggered to start, the drive source 31 drives the transmission rod 32 to rotate, 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 repair is completed, the drive source 31 is triggered to reverse, the transmission rod 32 and the slider 33 pull the cabinet door 2 back to close.

[0049] If the drive source 31 malfunctions or other emergency occurs, and the cabinet door 2 needs to be opened manually, the operator inserts the transmission part 81 of the key 8 through the slot 21 into the unlocking slot 62, rotates the key 8 90°, and the key 8 drives the unlocking part 6 to rotate. The unlocking part 61 presses the limiting part 5 back into the telescopic groove 411. At this time, the slider 33 is released from the resistance of the limiting part 5, and the operator can open the cabinet door 2, allowing the slider 33 to disengage from the slide groove 41. After the maintenance is completed, the cabinet door 2 is closed, allowing the slider 33 to enter the slide groove 41. The key 8 is reversed, and the unlocking part 61 is released from the resistance of the limiting part 5. The reset elastic element 7 drives the limiting part 5 to pop out of the telescopic groove 411, and the limiting part 5 resists and limits the slider 33.

[0050] If a fire occurs inside cabinet 1, the high temperature will melt the paraffin wax in expansion cylinder 110. After the paraffin wax melts, it expands rapidly, causing piston rod 120 to move, which in turn causes locking rod 100 to move until locking rod 100 is inserted into locking groove 91, locking cabinet door 2 to prevent cabinet door 2 from being opened accidentally due to heat or by staff members opening cabinet door 2 without their knowledge.

[0051] This application enables the cabinet door 2 to open automatically by setting up a drive component 3, which significantly improves operational efficiency and reduces manual intervention, making it particularly suitable for frequent maintenance scenarios.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An environmentally friendly high-voltage ring main unit, comprising a cabinet body (1) and a cabinet door (2), wherein the cabinet body (1) is used for installing electrical 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). The cabinet body (1) is provided with a drive assembly (3). The drive assembly (3) includes a drive source (31). The drive source (31) is used to rotate and drive the cabinet door (2) to open. The rotation axis of the cabinet door (2) extends along the height direction of the cabinet door (2). The drive assembly (3) also includes a transmission rod (32) and a slider (33). The drive 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) and the slider (33) are rotatably connected. The slider (33) is slidably disposed on the cabinet door (2) along the width direction of the cabinet door (2). The cabinet door (2) is provided with a guide (4), and the guide (4) is provided with a groove (41) extending along the width direction of the cabinet door (2). The slider (33) is slidably disposed in the groove (41). The guide (4) is provided with a limiting member (5), which is located on the side of the slider (33) facing the transmission rod (32). The limiting member (5) is used to abut against the slider (33). The limiting member (5) is slidably disposed on the guide member (4) along the height direction of the cabinet door (2). The cabinet door (2) is provided with an unlocking member (6). The unlocking member (6) is used to drive the limiting member (5) to move until the limiting member (5) and the slider (33) disengage. The groove (41) has a telescopic groove (411) extending along the height direction of the cabinet door (2) on its groove wall. The limiting member (5) is slidably disposed in the telescopic groove (411). A reset elastic member (7) is provided between the limiting member (5) and the bottom wall of the telescopic groove (411). The reset elastic member (7) is used to push the limiting member (5) to move away from the bottom wall of the telescopic groove (411). The unlocking member (6) is used to press the limiting member (5) back into the telescopic groove (411).

2. The environmentally friendly high-voltage ring main unit according to claim 1, characterized in that: The unlocking component (6) is rotatably mounted on the side wall of the cabinet door (2) facing the cabinet body (1). The unlocking component (6) includes an unlocking part (61) and a guide slope (611) is formed on the unlocking part (61). When the unlocking component (6) rotates, the guide slope (611) rotates to slide against the limiting component (5) and presses the limiting component (5) back into the telescopic groove (411).

3. The environmentally friendly high-voltage ring main unit according to claim 2, characterized in that: It also includes a key (8), which includes a transmission part (81). The unlocking part (6) has an unlocking groove (62) on the side wall facing the cabinet door (2). The cabinet door (2) has a slot (21) that communicates with the unlocking groove (62). Both the slot (21) and the unlocking groove (62) are used for the transmission part (81) to be inserted. 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 groove (62).

4. The environmentally friendly high-voltage ring main unit according to claim 1, characterized in that: The cabinet (1) is provided with a locking block (9), and the locking block (9) is provided with a locking groove (91). The cabinet door (2) is provided with a locking rod (100) that slides along the width direction of the cabinet door (2). When the cabinet (1) catches fire, the locking rod (100) slides into the locking groove (91).

5. The environmentally friendly high-voltage ring main unit according to claim 4, characterized in that: An expansion cylinder (110) is provided on the cabinet door (2). The expansion cylinder (110) includes a piston rod (120). Solid paraffin is installed in the cylinder body of the expansion cylinder (110). The expansion cylinder (110) is used to move the piston rod (120) when heated. The piston rod (120) is fixedly connected to the locking rod (100).

6. The environmentally friendly high-voltage ring main unit according to claim 4, characterized in that: It also includes a door frame (130), which is detachably connected to the cabinet (1), the cabinet door (2) is rotatably mounted on the cabinet (1), and the locking block (9) is mounted on the door frame (130).

Images