A load-adjustable capacity switch

Abstract

The present invention belongs to the technical field of on-load capacity-adjusting equipment, and discloses an on-load capacity-adjusting switch, comprising: an insulating cylinder, an insulating shaft rotatably arranged inside the insulating cylinder; a driving mechanism, the driving mechanism being fixedly arranged on the insulating cylinder and used to drive the insulating shaft to rotate; a contact system, the contact system being arranged inside the insulating cylinder, the contact system comprising a plurality of moving contacts, the plurality of moving contacts being fixedly arranged on the insulating shaft; an insulating isolation mechanism, the insulating isolation mechanism comprising a plurality of insulating covers, the plurality of insulating covers being respectively arranged between two adjacent moving contacts, the insulating covers being fixedly sleeved on the insulating shaft and rotating with the insulating shaft. The present invention can make fallen objects move downward through the discharge port and the material guide assembly in sequence, and finally move to the outside of the insulating cylinder through the lowermost material guide assembly, thereby reducing the potential safety hazards caused by fallen objects in the insulating cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of on-load capacity-adjusting equipment, and in particular to an on-load capacity-adjusting switch. Background Art

[0002] An on-load capacity-changing transformer is a type of transformer. The on-load capacity-changing controller monitors the voltage and current on the low-voltage side of the transformer to determine the current load current. If the previously set capacity-changing conditions are met, the controller issues a capacity-changing instruction to the on-load capacity-changing switch. The on-load capacity-changing switch switches capacity according to the capacity-changing instruction, achieving star-delta conversion and series-parallel conversion of the high- and low-voltage coils inside the transformer. In the excited state, the transformer automatically changes capacity. In the de-excited state, the transformer voltage is regulated.

[0003] The utility model with the existing authorized patent announcement number CN202736687U discloses an isolated on-load capacity-changing switch, including a housing, a motor, a quick mechanism, an insulating cylinder, an insulating main shaft and a contact system. The contact system includes a low-voltage part and a high-voltage part; the contact system includes a moving contact mounted on the insulating main shaft and a fixed contact mounted on the insulating cylinder; an insulating partition is provided on the insulating main shaft between the high-voltage contact and the low-voltage moving contact.

[0004] In existing technology, insulating elements are installed between the moving contacts to prevent debris from affecting the moving contacts of the capacitance-adjusting switch. If loose objects such as wires fall, the rotating insulating partitions can cause them to be thrown out and strike the inner wall of the insulating cylinder. These objects can then become lodged in or snag on the moving contacts and other components, creating an abnormal path during capacitance adjustment operations and posing a greater safety hazard. Summary of the Invention

[0005] The object of the present invention is to provide an on-load capacity-adjusting switch to solve the potential safety hazard caused by contact between falling objects and moving contacts in the on-load capacity-adjusting switch.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A load-controlled capacity-changing switch comprises: an insulating cylinder, an insulating shaft rotatably arranged inside the insulating cylinder; a driving mechanism, the driving mechanism being fixedly arranged on the insulating cylinder and used for driving the insulating shaft to rotate; a contact system, the contact system being arranged inside the insulating cylinder, the contact system comprising a plurality of moving contacts, and the plurality of moving contacts being fixedly arranged on the insulating shaft; an insulating isolation mechanism, the insulating isolation mechanism comprising a plurality of insulating covers, the plurality of insulating covers being respectively arranged between two adjacent moving contacts, the insulating covers being fixedly sleeved on the insulating shaft and rotating with the insulating shaft, the lower parts of the plurality of insulating covers being provided with a material guide assembly for guiding debris to the edge of the next-level insulating cover, the edge of the insulating cover being provided with a material discharge port, the material discharge port being able to communicate with the corresponding material guide assembly, and the lowermost material guide assembly extending through the bottom of the insulating cylinder to the outside of the insulating cylinder.

[0008] Preferably, the material guide assembly includes an insulating ring, which is fixedly arranged on the inner wall of the insulating cylinder. A leakage port is opened on the edge of the insulating ring, and the discharge port can be connected with the corresponding leakage port. The lower end of the lowest insulating ring is fixedly connected with a material guide pipe connected with the leakage port, and extends to the outside of the insulating cylinder through the material guide pipe.

[0009] Preferably, a material guide tube is fixedly provided on the lower side of each of the plurality of insulating rings, and the material guide tube is arranged directly below the corresponding material leakage port.

[0010] Preferably, the insulating ring is located at the lower side of the insulating cover, and the insulating ring is in contact with the insulating cover, and the insulating cover can slide relative to the insulating ring.

[0011] Preferably, the insulating cover is configured as a conical structure, and the edge of the insulating cover is in contact with the inner wall of the insulating tube.

[0012] Preferably, the insulating ring is configured as a conical ring structure, and the outer wall of the insulating ring is configured to fit the inner wall of the insulating cover.

[0013] Preferably, a cover for sealing the material guiding pipe is detachably connected to the bottom of the lowermost material guiding pipe.

[0014] Preferably, the portion of the lowermost material guiding tube extending to the outside of the insulating cylinder is detachably connected to an insulating box.

[0015] Preferably, the insulating box is connected to the lowermost material guide tube by a threaded connection.

[0016] Preferably, the insulating box is made of a transparent material.

[0017] The beneficial effects of the present invention are as follows: when the driving mechanism drives the insulating shaft to rotate, the insulating cover rotates accordingly, causing the fallen objects on the insulating cover to roll to the edge of the insulating cover, and the fallen objects can pass through the discharge port and the material guide component to enter the adjacent next layer of insulating isolation mechanism. The fallen objects on different layers of insulating covers can all move downward through the discharge port and the material guide component, and finally move to the outside of the insulating cylinder through the lowest material guide component, thereby reducing the safety hazards caused by the fallen objects in the insulating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front cross-sectional view of the present invention;

[0019] Figure 2 It is a three-dimensional diagram of the insulating cover of the present invention;

[0020] Figure 3 It is a three-dimensional diagram of the insulating ring of the present invention.

[0021] In the figure: 1. Insulating cylinder; 2. Driving mechanism; 3. Insulating shaft; 4. Low-voltage moving contact; 5. High-voltage moving contact; 6. Insulating cover; 7. Insulating ring; 8. Material guide pipe; 9. Discharge port; 10. Insulating box. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0023] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0026] See also Figure 1 A load-capacity-adjusting switch comprises: an insulating cylinder 1, a driving mechanism 2, and a contact system. An insulating shaft 3 is rotatably arranged inside the insulating cylinder 1. The contact system is arranged inside the insulating cylinder 1, and the contact system includes multiple groups of moving contacts and fixed contacts. Multiple moving contacts are fixedly arranged on the insulating shaft 3, and the moving contacts are arranged at equal distances; the fixed contacts are fixedly arranged on the inner wall of the insulating cylinder 1, and the fixed contacts can contact and electrically connect with the corresponding moving contacts. The moving contacts include a high-voltage moving contact 5 and a low-voltage moving contact 4. The driving mechanism is fixedly arranged on the top of the insulating cylinder 1, and is used to drive the insulating shaft 3 to rotate. When the insulating shaft 3 rotates, different high-voltage moving contacts 5 and low-voltage moving contacts 4 are respectively in contact with the fixed contacts to achieve electrical connection, thereby completing the capacity adjustment work of the transformer.

[0027] See also Figure 1 and Figure 2 The on-load capacity-changing switch also includes an insulating isolation mechanism, which includes a plurality of insulating covers, which are respectively arranged between two adjacent moving contacts, and a gap is left between the moving contact and the insulating cover, thereby reducing the contact between the debris on the insulating cover 6 and the moving contact, reducing the safety risk. The insulating cover 6 is fixedly sleeved on the insulating shaft 3 and rotates with the insulating shaft 3. The insulating cover 6 can be set as a circular flat plate structure. When the insulating cover 6 rotates with the insulating shaft 3, the debris on the insulating cover 6 is moved to the edge of the insulating cover 6 by centrifugal force. The insulating cover 6 can also be set as a conical structure, and the edge of the insulating cover 6 is in contact with the inner wall of the insulating cylinder 1, so that the debris on the insulating cover 6 is naturally slid to the edge of the insulating cover 6 under the influence of gravity. When the falling objects inside the capacity-changing switch fall, the insulating cover 6 blocks the falling objects and limits the falling objects on the insulating cover 6.

[0028] See also Figure 3 , the lower part of multiple insulating covers 6 is provided with a material guide component for guiding debris to the next-level insulating cover 6. The material guide component includes an insulating ring 7, which is fixedly arranged on the inner wall of the insulating cylinder 1. The edge of the insulating ring 7 is provided with a leakage port, and the edge of the insulating cover 6 is provided with a discharge port 9. The discharge port 9 can be communicated with the corresponding leakage port, and the discharge port 9 can be connected with the corresponding material guide component through the leakage port. The multiple material guide components are connected to each other so that the fallen objects can pass through the material guide components in turn and fall downward, and finally be discharged through the lowermost material guide component.

[0029] The lower side of the multiple insulating rings 7 is fixed with a guide tube 8, which is set just below the corresponding leakage port, so that the falling objects fall along the guide tube to the insulating cover 6 of the adjacent lower layer, thereby reducing the contact between the falling objects and the moving contact when falling, which affects the safety of the on-load capacity-changing switch. The lower end of the lowest insulating ring 7 is fixedly connected to the guide tube 8 connected to the leakage port, and extends to the outside of the insulating cylinder 1 through the guide tube 8 to discharge the falling objects of different layers into the insulating cylinder 1.

[0030] The insulating ring 7 is located below the insulating cover 6 and fits closely to the insulating cover, allowing the insulating cover 6 to slide relative to the insulating ring 7. The insulating ring 7 is configured as a conical ring structure, with the outer wall of the insulating ring 7 fitting closely to the inner wall of the insulating cover 6. When the insulating cover 6 maintains its sliding fit with the insulating ring 7, the chance of falling objects passing through the insulating cover 6 and the insulating ring 7 and falling into the gap between the insulating cover 6 and the insulating ring 7 is reduced.

[0031] A removable cap is attached to the bottom of the lowermost material guide tube 8, which is used to seal the tube. This cap seals the lowermost material guide tube 8, preventing loose material from falling through the tube and preventing foreign matter from entering the insulation tube 1 and potentially affecting its safety. When cleaning is necessary, the cap is removed to remove loose material.

[0032] Alternatively, the portion of the lowermost material guide tube 8 extending outside the insulating cylinder 1 may be detachably connected to an insulating box 10. This allows fallen objects to be concentrated within the insulating box 10, facilitating centralized disposal of the fallen objects. The insulating box 10 is connected to the lowermost material guide tube 8 via a threaded connection, making it easy to disassemble and install. After installation, it is not easy to fall off, reducing the abnormal drop of fallen objects and the ingress of external impurities into the capacitance regulating switch. The insulating box 10 is made of a transparent material, making it easy for staff to observe the accumulation of debris within the insulating box 10 from the outside.

[0033] When the driving mechanism 2 is working, the driving mechanism 2 drives the insulating shaft 3 to rotate, and the insulating cover 6 rotates accordingly, so that the fallen objects can roll to the edge of the insulating cover 6, and the fallen objects can pass through the discharge port 9 and the guide pipe 8 into the adjacent next layer of insulating isolation mechanism. The fallen objects on different layers of insulating covers 6 can move downward through the discharge port and the guide assembly, and finally move to the outside of the insulating cylinder through the lowest guide pipe 8, reducing the safety hazards caused by the fallen objects in the insulating cylinder 1.

[0034] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An on-load capacity-adjusting switch, characterized in that: include: An insulating cylinder (1), wherein an insulating shaft (3) is rotatably arranged inside the insulating cylinder (1); A driving mechanism (2), the driving mechanism being fixedly arranged on the insulating cylinder (1) and being used for driving the insulating shaft (3) to rotate; A contact system, the contact system being arranged inside the insulating cylinder (1), the contact system comprising a plurality of movable contacts, the plurality of movable contacts being fixedly arranged on the insulating shaft (3); An insulation isolation mechanism, comprising a plurality of insulation covers, wherein the plurality of insulation covers are respectively arranged between two adjacent moving contacts, the insulation cover (6) is fixedly sleeved on the insulation shaft (3) and rotates with the insulation shaft (3), the lower parts of the plurality of insulation covers (6) are each provided with a material guide assembly for guiding debris to the edge of the next-level insulation cover (6), the edge of the insulation cover (6) is provided with a discharge port (9), the discharge port (9) can be connected to the corresponding material guide assembly, and the lowermost material guide assembly passes through the bottom of the insulation cylinder (1) and extends to the outside of the insulation cylinder (1).

2. The on-load capacity-adjusting switch according to claim 1, characterized in that: The material guide assembly includes an insulating ring (7), which is fixedly arranged on the inner wall of the insulating cylinder (1); a material leakage port is opened on the edge of the insulating ring (7); the material discharge port can be connected to the corresponding material leakage port; the lower end of the lowermost insulating ring (7) is fixedly connected to a material guide pipe (8) connected to the material leakage port, and extends to the outside of the insulating cylinder (1) through the material guide pipe (8).

3. The on-load capacity-adjusting switch according to claim 2, characterized in that: A material guide tube (8) is fixedly provided on the lower side of each of the plurality of insulating rings (7), and the material guide tube (8) is provided directly below the corresponding material leakage port.

4. The on-load capacity-adjusting switch according to claim 2, characterized in that: The insulating ring (7) is located on the lower side of the insulating cover (6), and the insulating ring is in contact with the insulating cover, and the insulating cover (6) can slide relative to the insulating ring (7).

5. The on-load capacity-adjusting switch according to claim 4, characterized in that: The insulating cover (6) is configured as a conical structure, and the edge of the insulating cover (6) fits against the inner wall of the insulating cylinder (1).

6. The on-load capacity-adjusting switch according to claim 5, characterized in that: The insulating ring (7) is configured as a conical ring structure, and the outer wall of the insulating ring (7) is configured to fit the inner wall of the insulating cover (6).

7. The on-load capacity-adjusting switch according to claim 3, characterized in that: The bottom of the lowermost material guiding pipe (8) is detachably connected to a sealing cover for sealing the material guiding pipe (8).

8. The on-load capacity-adjusting switch according to claim 3, characterized in that: The portion of the lowermost material guide tube (8) extending to the outside of the insulating cylinder (1) is detachably connected to an insulating box (10).

9. The on-load capacity-adjusting switch according to claim 8, characterized in that: The insulating box (10) is connected to the lowermost material guide tube (8) by threaded connection.

10. The on-load capacity-adjusting switch according to claim 8, characterized in that: The insulating box (10) is made of transparent material.

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