Device for adjusting aging resistance of vacuum arc-extinguishing chamber of high-voltage switch

Abstract

The invention discloses an adjustable device for an aging resistor of a vacuum arc-extinguishing chamber of a high-voltage switch. The adjustable device comprises the aging resistor, a pulley and a rope, the plurality of aging resistors are sequentially and vertically overlapped, and resistor grading rings are arranged between the adjacent aging resistors and at the end parts of the aging resistors; the pulleys comprise top pulleys and bottom pulleys; the top pulley is positioned above the top aging resistor, and the bottom pulley is positioned below the bottom aging resistor; the ropes comprise insulating ropes and steel wire ropes; the insulating rope and the steel wire rope are connected end to end to form a ring; a rope penetrating hole is formed in the surface of the resistance grading ring; the rope is connected with the top pulley and the bottom pulley in a sleeved mode and sequentially penetrates through the rope penetrating holes of the resistance grading rings. According to the aging resistance adjustable device, the resistance value can be adjusted, the frequency of resistor replacement and test wiring is reduced, and the test efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switchgear technology, and more specifically to an adjustable aging resistance device for a high-voltage switch vacuum interrupter. Background Technology

[0002] Power frequency voltage aging is an effective means to improve the insulation performance of vacuum interrupters and is also a routine factory test item for interrupter manufacturers. Aging is accompanied by a large amount of discharge, therefore a protective resistor needs to be connected in series in the test circuit to protect the test sample and equipment. Due to the characteristics of high voltage, large short-circuit current, and long test duration, the insulation and temperature rise performance requirements of the resistor are high.

[0003] Meanwhile, different voltage levels require matching aging resistors with different resistance values ​​to achieve the optimal aging effect. Currently, most aging resistors use an integrated fixed structure, meaning the resistance value cannot be adjusted. Each type of resistor must be individually supplied, requiring complete replacement during testing, resulting in a significant waste of manpower and resources. Furthermore, the replacement and installation process is cumbersome, severely impacting testing efficiency.

[0004] Therefore, developing an adjustable resistance device for aging high-voltage switch vacuum interrupters is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an adjustable resistance device for aging a high-voltage switch vacuum interrupter with adjustable resistance value.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable aging resistor device for a high-voltage switch vacuum interrupter includes:

[0008] Aged resistors, multiple aged resistors are arranged vertically in sequence, and resistance equalization rings are provided between adjacent aged resistors and at the ends of the aged resistors.

[0009] The pulley includes a top pulley and a bottom pulley; the top pulley is located above the top aged resistor, and the bottom pulley is located below the bottom aged resistor;

[0010] The rope includes an insulated rope and a steel wire rope; the insulated rope and the steel wire rope are connected end to end to form a loop; the surface of the resistance equalizing ring has rope-passing holes; the rope is sleeved with the top pulley and the bottom pulley, and passes through the rope-passing holes of the multiple resistance equalizing rings in sequence.

[0011] The beneficial effects of adopting the above technical solution are that by using pulleys to drive the switching of steel wire rope and insulating rope, the resistor can be short-circuited and connected, thus achieving the purpose of convenient resistor adjustment; it avoids the defect of traditional integrated fixed resistors that need to be replaced as a whole, and greatly reduces the number of times resistors need to be replaced and rewiring needs to be reconnected.

[0012] Preferably, the bottom of the aging resistor is provided with an insulating cylinder, and an insulating equalizing ring is provided between two adjacent insulating cylinders.

[0013] Preferably, a support frame is provided at the bottom end of the insulating cylinder located at the bottom. The support frame allows the entire device to be moved as a whole.

[0014] Preferably, the top pulley is rotatably connected to a top support seat.

[0015] Preferably, the bottom pulley is rotatably connected to a bottom support base.

[0016] Preferably, the bottom pulley is connected to a crank handle.

[0017] Preferably, both the resistance equalizing ring and the insulation equalizing ring are provided with guide brackets at their bottoms, and the guide brackets are connected to guide components.

[0018] Preferably, the guiding assembly includes a horizontal guide sleeve and a vertical guide sleeve; the horizontal and vertical guide sleeves are arranged vertically and are both rotatably connected to the guide bracket; the rope is placed between two adjacent horizontal guide sleeves or two adjacent vertical guide sleeves. The horizontal and vertical guide sleeves constrain the rope, limiting its movement in the horizontal and vertical directions while allowing the sleeves to roll with the rope, significantly reducing frictional resistance and ensuring long-term operational reliability.

[0019] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an adjustable aging resistor device for a high-voltage switch vacuum interrupter, the beneficial effects of which are:

[0020] (1) The number of resistor sections can be adjusted by using a crank, pulley, and rope. This is convenient and solves the problem that the resistance value of existing old refining resistors cannot be adjusted and that replacement and installation are difficult.

[0021] (2) It reduced the frequency of replacing resistors and test wiring, greatly reduced manpower input, and improved test efficiency;

[0022] (3) The rope can be prevented from moving horizontally by the guiding effect of the horizontal guide sleeve and the vertical guide sleeve. At the same time, by adjusting the spacing of the guide sleeves, the rope can be tightly fitted with the horizontal guide sleeve and the vertical guide sleeve to prevent the occurrence of loose connection. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the adjustable resistance device for aging provided by the present invention;

[0025] Figure 2 This is a front view of the top pulley of the adjustable resistance device for aging provided by the present invention;

[0026] Figure 3 This is a side view of the top pulley of the adjustable resistance device for aging provided by the present invention;

[0027] Figure 4 This is a front view of the bottom pulley of the adjustable resistance device for aging provided by the present invention;

[0028] Figure 5 This is a side view of the bottom pulley of the adjustable resistance device for aging provided by the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the old refining resistor combination state provided by the present invention.

[0030] In the figure,

[0031] 1-Aged and aged resistors;

[0032] 2-Resistance equalizing ring;

[0033] 21- Threading hole;

[0034] 3-Top pulley; 4-Bottom pulley;

[0035] 5- Rope;

[0036] 51-Insulating rope; 52-Steel wire rope;

[0037] 6-Insulating cylinder; 7-Insulating equalizing ring; 8-Supporting base frame; 9-Top support seat; 10-Bottom support seat; 11-Handle; 12-Guide bracket; 13-Horizontal guide sleeve; 14-Vertical guide sleeve. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention discloses an adjustable aging resistor device for a high-voltage switch vacuum interrupter, comprising:

[0040] Aged resistor 1, multiple aged resistors 1 are arranged vertically in sequence, and resistance equalization rings 2 are provided between adjacent aged resistors 1 and at the ends of aged resistors 1.

[0041] The pulleys include a top pulley 3 and a bottom pulley 4; the top pulley 3 is located above the top aging resistor 1, and the bottom pulley 4 is located below the bottom aging resistor 1.

[0042] Rope 5 includes an insulating rope 51 and a steel wire rope 52; the insulating rope 51 and the steel wire rope 52 are connected end to end to form a loop; the surface of the resistance equalizing ring 2 has rope-passing holes 21; rope 5 is sleeved with the top pulley 3 and the bottom pulley 4, and sequentially passes through the rope-passing holes 21 of multiple resistance equalizing rings 2. The aged resistor 1 is divided into multiple sections, each with a resistance value of 500KΩ. By rotating rope 5, the contact position between the insulating rope 51 and the steel wire rope 52 and the resistor can be adjusted, and the corresponding number of aged resistor sections can be connected as needed, thereby achieving the adjustment of the resistance value between 0-1.5MΩ.

[0043] To further optimize the above technical solution, an insulating cylinder 6 is installed at the bottom of the bottom aging resistor 1, and an insulating equalizing ring 7 is installed between two adjacent insulating cylinders 6. The insulating cylinder 6 can be set in multiple sections as needed, and the installation of the insulating cylinder 6 can ensure the insulation distance between the high voltage and the ground.

[0044] To further optimize the above technical solution, a support frame 8 is provided at the bottom end of the insulating cylinder 6. A movable roller structure can be provided at the bottom of the support frame 8 to facilitate the movement of the aged resistor 1.

[0045] To further optimize the above technical solution, a top support 9 is externally rotatably connected to the top pulley 3. The top support 9 can be positioned on top of the topmost resistance equalizing ring 2.

[0046] To further optimize the above technical solution, a bottom support base 10 is externally rotatably connected to the bottom pulley 4. The bottom support base 10 can be positioned below the bottommost insulating equalizing ring 7. The surface of the insulating equalizing ring 7 can also have a rope-passing hole for the rope to pass through.

[0047] To further optimize the above technical solution, a crank handle 11 is connected to the bottom pulley 4. By turning the crank handle 11, the bottom pulley 4 can be rotated, thereby adjusting the position of the insulating rope 51 and the wire rope 52.

[0048] To further optimize the above technical solution, guide brackets 12 are provided at the bottom of both the resistance equalizing ring 2 and the insulation equalizing ring 7, and guide components are connected to the guide brackets 12. The guide brackets 12 provide support for the guide components.

[0049] To further optimize the above technical solution, the resistance equalizing ring 2 and the aging resistor 1, and the insulation equalizing ring 7 and the insulation cylinder 6 are all connected by flanges.

[0050] To further optimize the above technical solution, the guide assembly includes a horizontal guide sleeve 13 and a vertical guide sleeve 14; the horizontal guide sleeve 13 and the vertical guide sleeve 14 are arranged vertically and are both rotatably connected to the guide bracket 12; the rope 5 is placed between two adjacent horizontal guide sleeves 13 or two adjacent vertical guide sleeves 14. Figure 1-3 As shown, three horizontal guide sleeves 13 and three vertical guide sleeves 14 are provided. The three vertical guide sleeves 14 are arranged in parallel and in a triangular shape. The three horizontal guide sleeves 13 are arranged in parallel along the horizontal direction and are located between the three vertical guide sleeves 14. The rope 5 is placed between the three vertical guide sleeves 14 to guide the rope 5 in the vertical direction, and between the three horizontal guide sleeves 13 to guide the rope 5 in the horizontal direction, preventing the rope 5 from getting tangled or having poor contact during rotation. By adjusting the distance between the three vertical guide sleeves 14 or the three horizontal guide sleeves 13, a tight fit between the rope 5 and the vertical guide sleeves 14 or the horizontal guide sleeves 13 can be achieved, preventing loose connections. Furthermore, the vertical guide sleeves 14 and the horizontal guide sleeves 13 can rotate with the rope 5, which can reduce the friction between the rope 5 and the vertical guide sleeves 14 or the horizontal guide sleeves 13.

[0051] like Figure 1As shown, taking four sections of aged resistor 1 as an example, the resistor equalizing ring 2 has five layers from top to bottom, there are two insulating cylinders 6, and one insulating equalizing ring 7. The guide assembly, resistor equalizing ring, and aged resistor are in contact and can conduct current. The connection between the steel wire rope 52 and the insulating rope 51 is marked by color. Initially, it is located at position E at the lower end of the fifth layer resistor equalizing ring, with the upper end being steel wire rope and the lower end being insulating rope. At this time, the current flows through the steel wire rope 52 and does not pass through the resistor, so all four sections of aged resistor 1 are short-circuited and connected to the system. The refining resistance is 0. Rotate the lower crank 11 to position D, where the top three old refining resistors are short-circuited and the bottom resistor is put into use, with an old refining resistance of 500kΩ. Similarly, at position C, the top two resistors are short-circuited and the bottom two resistors are put into use, with an old refining resistance of 1000kΩ. At position B, the top resistor is short-circuited and the bottom three resistors are put into use, with an old refining resistance of 1500kΩ. At position A, all four resistors are put into use, with an old refining resistance of 2000kΩ.

[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-voltage switch vacuum interrupter aging resistance adjustable device, characterized in that, include: Aged resistors, multiple aged resistors are arranged vertically in sequence, and resistance equalization rings are provided between adjacent aged resistors and at the ends of the aged resistors. The pulley includes a top pulley and a bottom pulley; the top pulley is located above the top aged resistor, and the bottom pulley is located below the bottom aged resistor; The rope includes an insulated rope and a steel wire rope; the insulated rope and the steel wire rope are connected end to end to form a loop; the surface of the resistance equalizing ring has rope-passing holes; the rope is sleeved with the top pulley and the bottom pulley, and passes through the rope-passing holes of the multiple resistance equalizing rings in sequence.

2. The adjustable resistance aging device for a high-voltage switch vacuum interrupter according to claim 1, characterized in that, An insulating cylinder is provided at the bottom of the old resistor, and an insulating equalizing ring is provided between two adjacent insulating cylinders.

3. The adjustable resistance aging device for a high-voltage switch vacuum interrupter according to claim 2, characterized in that, A supporting base is provided at the bottom end of the insulating cylinder located at the bottom.

4. The adjustable resistance aging device for a high-voltage switch vacuum interrupter according to claim 1, characterized in that, The top pulley is externally rotatably connected to a top support base.

5. The adjustable resistance aging device for a high-voltage switch vacuum interrupter according to claim 1, characterized in that, The bottom pulley is externally rotatably connected to a bottom support base.

6. The adjustable resistance aging device for a high-voltage switch vacuum interrupter according to claim 5, characterized in that, The bottom pulley is connected to a crank handle.

7. The adjustable resistance aging device for a high-voltage switch vacuum interrupter according to claim 1, characterized in that, Both the resistance equalizing ring and the insulation equalizing ring are provided with guide brackets at their bottoms, and the guide brackets are connected to guide components.

8. The adjustable resistance aging device for a high-voltage switch vacuum interrupter according to claim 7, characterized in that, The guiding assembly includes a horizontal guide sleeve and a vertical guide sleeve; the horizontal guide sleeve and the vertical guide sleeve are arranged vertically and are rotatably connected to the guiding bracket; the rope is placed between two adjacent horizontal guide sleeves or two adjacent vertical guide sleeves.

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