Closing resistor device and high voltage switchgear

Abstract

The utility model relates to the technical field of high-voltage switchgear, and in particular to a closing resistor device and a high-voltage switchgear. The closing resistor device comprises a break assembly, a first fixed plate, a second fixed plate, a resistor string, an insulating rod, a first insulating plate and a first conductive plate. The first fixed plate and the second fixed plate are both connected to the break assembly. The resistor string is arranged between the first fixed plate and the second fixed plate. The two ends of the insulating rod are respectively passed through the first fixed plate and the second fixed plate. The first insulating plate is sleeved on the insulating rod, the first insulating plate is located in the middle area of ​​the resistor string, and the first insulating plate is connected to the break assembly. The first conductive plate is sleeved on the insulating rod, and one end of the first conductive plate is conductively connected to a resistor sheet located on one side of the first insulating plate, and the other end of the first conductive plate is conductively connected to a resistor sheet located on the other side of the first insulating plate. The closing resistor device has high stability and reliability, can extend service life, and save costs.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage switch equipment, in particular to a closing resistor device and a high-voltage switch equipment. Background Art

[0002] The closing resistor device usually consists of a closing resistor and a break, and the two are connected in parallel in the circuit breaker. The resistor in the closing resistor is placed on two insulating rods, and the resistor on the insulating rod is connected in series in the circuit through a conductive plate. When the break is open, the closing resistor is connected in series in the circuit, and when the break is closed, the closing resistor is short-circuited.

[0003] The structural strength of the closing resistor device in the prior art is low and the stability is poor. When operating the circuit breaker, the resistor in the closing resistor device will vibrate to a certain extent, which will cause a certain degree of damage to the resistor. In severe cases, the resistor will break, which will affect the normal use of the closing resistor device and increase maintenance costs. Therefore, it is necessary to design a closing resistor device and a high-voltage switchgear to improve its stability and reliability, reduce the damage to the resistor caused by vibration and impact, and extend its service life. Utility Model Content

[0004] The first purpose of the utility model is to provide a closing resistor device with high stability and reliability, extended service life and cost savings.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a closing resistor device, comprising:

[0007] Fracture components;

[0008] a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are both connected to the fracture assembly;

[0009] A resistor string, the resistor string is arranged between the first fixing plate and the second fixing plate, the resistor string comprises a plurality of stacked resistor sheets, and a first through hole is formed on the resistor sheets;

[0010] An insulating rod, wherein the insulating rod is inserted into the first through hole, and two ends of the insulating rod are respectively inserted into the first fixing plate and the second fixing plate;

[0011] A first insulating plate, wherein the first insulating plate is sleeved on the insulating rod, the first insulating plate is located in the middle area of ​​the resistor string, and the first insulating plate is connected to the break assembly;

[0012] A first conductive plate, wherein the first conductive plate is sleeved on the insulating rod, and one end of the first conductive plate is conductively connected to the resistor located on one side of the first insulating plate, and the other end of the first conductive plate is conductively connected to the resistor located on the other side of the first insulating plate.

[0013] As an optional technical solution for a closing resistor device, a second through hole and a first mounting hole are provided on the first insulating plate, the insulating rod is passed through the second through hole, and the closing resistor device also includes a fixing member, which is passed through the first mounting hole and connected to the fracture assembly.

[0014] As an optional technical solution for the closing resistor device, an insulating sleeve is provided on the fracture assembly, a flange is provided on the insulating sleeve, and the fixing piece is adaptively connected to the flange.

[0015] As an optional technical solution for the closing resistor device, the first insulating plate is elastic.

[0016] As an optional technical solution for a closing resistor device, the first conductive plate has a first connecting part, a second connecting part and a third connecting part, one end of the second connecting part is connected to the first connecting part, and the other end is connected to the third connecting part, the first connecting part and the third connecting part are arranged opposite to each other, the first connecting part is conductively connected to the resistor sheet located on one side of the first insulating plate, and the third connecting part is conductively connected to the resistor sheet located on the other side of the first insulating plate.

[0017] As an optional technical solution for a closing resistor device, a third through hole is provided on the first connecting portion, a fourth through hole is provided on the third connecting portion, the third through hole is coaxially arranged with the fourth through hole, and the insulating rod is passed through the third through hole and the fourth through hole.

[0018] As an optional technical solution for a closing resistor device, the closing resistor device also includes an elastic component, which is sleeved on the insulating rod, and the elastic component is located on the side of the first fixed plate away from the resistor string, one end of the elastic component abuts against the first fixed plate, and the other end of the elastic component is connected to the insulating rod.

[0019] As an optional technical solution of a closing resistor device, the resistor string, the insulating rod and the elastic component are each provided in plurality, and each resistor string is respectively provided with one insulating rod and one elastic component;

[0020] The closing resistor device further includes a plurality of second conductive plates, wherein two second conductive plates are arranged between two adjacent resistor sheets on one resistor string, and one side of each of the two second conductive plates respectively extends to the upper surface and the lower surface of one resistor sheet in the adjacent resistor string, so that the resistor sheets on the plurality of resistor strings are sequentially connected in series to form a series circuit;

[0021] An insulating pad is arranged between two second conductive plates disposed between two adjacent resistor sheets on the same resistor string.

[0022] As an optional technical solution for the closing resistor device, a protrusion is provided in the middle of the second conductive plate, and the protrusion is located between two adjacent resistor strings.

[0023] As an optional technical solution for a closing resistor device, the closing resistor device also includes a threaded sleeve, a threaded hole is provided on the second fixing plate, the threaded sleeve is screwed to the threaded hole, and the insulating rod is passed through the threaded sleeve and has a clearance fit with the threaded sleeve.

[0024] The second purpose of the utility model is to provide a high-voltage switch device, which has high stability and reliability, can reduce the phenomenon of damage or even breakage of resistors due to vibration, extend the service life, and achieve the purpose of cost saving.

[0025] To achieve this purpose, the utility model adopts the following technical solutions:

[0026] The utility model provides a high-voltage switch device, comprising the above-mentioned closing resistance device.

[0027] The beneficial effects of the utility model include at least:

[0028] The utility model provides a closing resistor device, which includes a break assembly, a first fixed plate, a second fixed plate, a resistor string, an insulating rod, a first insulating plate and a first conductive plate. The first fixed plate and the second fixed plate are both connected to the break assembly. The resistor string is arranged between the first fixed plate and the second fixed plate, and the resistor string includes a plurality of stacked resistor sheets, and a first through hole is provided on the resistor sheet. The insulating rod is inserted into the first through hole, and the two ends of the insulating rod are respectively inserted into the first fixed plate and the second fixed plate. The first insulating plate is sleeved on the insulating rod, the first insulating plate is located in the middle area of ​​the resistor string, and the first insulating plate is connected to the break assembly, and the middle area here refers to an area between the two ends of the resistor string. The first conductive plate is sleeved on the insulating rod, and one end of the first conductive plate is conductively connected to the resistor sheet located on one side of the first insulating plate, and the other end of the first conductive plate is conductively connected to the resistor sheet located on the other side of the first insulating plate. By setting the first insulating plate, the first insulating plate can be connected to the break assembly, so that when the operator operates the circuit breaker, that is, when the break assembly is in the process of closing and opening, the resistor in the resistor string vibrates. Due to the setting of the first insulating plate, the force exerted on the resistor can be timely transmitted to the first insulating plate, making the first insulating plate the main force object, thereby avoiding the phenomenon of stress concentration on the resistor, reducing or avoiding the phenomenon of damage to the resistor due to vibration and impact, extending the service life, improving the stability and reliability of the closing resistor device, and saving costs. By setting the first conductive plate, the resistors on both sides of the first insulating plate can be conductively connected, thereby realizing the series connection of multiple resistors and improving the reliability of the closing resistor device.

[0029] The utility model also provides a high-voltage switchgear, which includes the above-mentioned closing resistor device. The high-voltage switchgear has high strength, high stability and reliability, can reduce the phenomenon of damage or even breakage of the resistor sheet due to vibration, prolong the service life, and achieve the purpose of cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0031] Figure 1 The main view of the closing resistor device provided by the embodiment of the utility model Figure 1 ;

[0032] Figure 2 yes Figure 1The cross-sectional view along the AA direction;

[0033] Figure 3 yes Figure 1 The cross-sectional view along the BB direction;

[0034] Figure 4 The main view of the closing resistor device (fracture assembly not shown) provided by the embodiment of the utility model Figure 2 ;

[0035] Figure 5 It is a structural schematic diagram of a first insulating plate provided in an embodiment of the utility model;

[0036] Figure 6 is a cross-sectional view of a first insulating plate provided by an embodiment of the utility model;

[0037] Figure 7 It is a structural schematic diagram of the first conductive plate provided in an embodiment of the utility model;

[0038] Figure 8 is a side view of the first conductive plate provided in an embodiment of the utility model;

[0039] Fig. 9 It is a schematic diagram of the structure of the resistor provided by the embodiment of the utility model;

[0040] Fig.10 is a cross-sectional view of a resistor provided by an embodiment of the utility model;

[0041] Fig.11 It is a structural schematic diagram of the second conductive plate provided in an embodiment of the utility model;

[0042] Fig.12 is a side view of the second conductive plate provided by an embodiment of the utility model;

[0043] Fig.13 It is a structural schematic diagram of the insulating pad provided by an embodiment of the utility model;

[0044] Fig.14 is a cross-sectional view of an insulating pad provided by an embodiment of the utility model;

[0045] Fig.15 It is a schematic diagram of the resistor provided by the embodiment of the utility model after assembly.

[0046] Reference numerals

[0047] 100, fracture assembly; 110, insulating sleeve;

[0048] 200, first fixing plate; 300, second fixing plate; 310, threaded hole;

[0049] 400, resistor sheet; 410, first through hole;

[0050] 500, insulating rod; 510, second groove;

[0051] 600, first insulating plate; 610, second through hole; 620, first mounting hole;

[0052] 700, first conductive plate; 710, first connecting portion; 720, second connecting portion; 730, third connecting portion; 740, third through hole; 750, fourth through hole;

[0053] 800, elastic component; 810, spring; 820, stopper; 830, first groove; 840, stopper; 850, first support plate;

[0054] 900, threaded sleeve;

[0055] 1000, height-increasing pad;

[0056] 2000, second conductive plate; 2001, fifth through hole; 2002, protruding portion;

[0057] 3000, insulating pad; 3001, first step portion; 3002, second step portion; 3003, sixth through hole. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0059] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0061] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0064] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0065] This embodiment provides a closing resistor device, which has high stability and reliability, can extend the service life, and achieve the purpose of cost saving.

[0066] like Figure 1-Figure 4As shown, the closing resistor device mainly includes a break assembly 100, a first fixed plate 200, a second fixed plate 300, a resistor string, an insulating rod 500, a first insulating plate 600 and a first conductive plate 700. Among them, the first fixed plate 200 and the second fixed plate 300 are both connected to the break assembly 100. The resistor string is arranged between the first fixed plate 200 and the second fixed plate 300, and the resistor string includes a plurality of stacked resistor sheets 400, and a first through hole 410 is opened on the resistor sheet 400. The insulating rod 500 is inserted into the first through hole 410, and the two ends of the insulating rod 500 are respectively inserted into the first fixed plate 200 and the second fixed plate 300. The first insulating plate 600 is sleeved on the insulating rod 500, the first insulating plate 600 is located in the middle area of ​​the resistor string, and the first insulating plate 600 is connected to the break assembly 100. The first conductive plate 700 is sleeved on the insulating rod 500 , and one end of the first conductive plate 700 is conductively connected to the resistor 400 located on one side of the first insulating plate 600 , and the other end of the first conductive plate 700 is conductively connected to the resistor 400 located on the other side of the first insulating plate 600 .

[0067] Based on the above design, in this embodiment, the first insulating plate 600 is arranged so that the first insulating plate 600 can be connected to the break assembly 100. In this way, when the operator operates the circuit breaker, that is, when the break assembly 100 is in the process of closing and opening, the resistor 400 in the resistor string vibrates. Due to the arrangement of the first insulating plate 600, the force exerted on the resistor 400 can be transmitted to the first insulating plate 600 in a timely manner, making the first insulating plate 600 the main force-bearing object, thereby avoiding the phenomenon of stress concentration on the resistor 400, reducing or avoiding the phenomenon of damage to the resistor 400 due to vibration and impact, extending the service life, improving the stability and reliability of the closing resistor device, and saving costs.

[0068] By disposing the first conductive plate 700 , the resistor sheets 400 on both sides of the first insulating plate 600 can be conductively connected, thereby realizing the series connection of multiple resistor sheets 400 and improving the reliability of the closing resistor device.

[0069] Furthermore, if Figure 2 and Figure 4 As shown, in general, the number of insulating rods 500 and resistor strings in the closing resistor device is two, and each resistor string is inserted into one insulating rod 500. At the same time, the two insulating rods 500 are inserted into the first fixing plate 200, the first insulating plate 600 and the second fixing plate 300.

[0070] Optionally, the first insulating plate 600 in this embodiment may be located in the middle of the resistor string, or may be located at the 1 / 3 position, 2 / 3 position, or other position of the resistor string.

[0071] like Figure 5-Figure 6 As shown, in this embodiment, a second through hole 610 and a first mounting hole 620 are provided on the first insulating plate 600, the insulating rod 500 is passed through the second through hole 610, and the closing resistor device also includes a fixing member, which is passed through the first mounting hole 620 and connected to the fracture assembly 100.

[0072] Optionally, the fixing parts in this embodiment can be set as screws, bolts and other components. The setting of the fixing parts and the first mounting hole 620 can improve the stability of the connection between the first insulating plate 600 and the fracture assembly 100. At the same time, it is also convenient for the later disassembly and maintenance of the first insulating plate 600, saving costs.

[0073] Two second through holes 610 are arranged on the first insulating plate 600. The arrangement of the second through holes 610 is conducive to the insertion of the insulating rod 500. At the same time, the two second through holes 610 and the first mounting hole 620 form a triangular support structure. The stability of the triangle is utilized to reduce the damage to the resistor 400 caused by vibration and impact, thereby improving the stability and reliability of the closing resistor device and extending its service life.

[0074] like Figure 1 As shown, in this embodiment, an insulating sleeve 110 is provided on the fracture assembly 100, and the fixing member is connected to the insulating sleeve 110. The provision of the insulating sleeve 110 can provide insulation protection for the fracture assembly 100, and the inner cavity of the insulating sleeve 110 is a vacuum or filled with a gas of a highly insulating medium, which can effectively isolate the electrical components from the surrounding environment, reduce contact with the external environment, and prevent electrical leakage and failure, thereby avoiding electrical failures and short circuits caused by external voltage or environmental changes.

[0075] Furthermore, a flange is provided on the insulating sleeve 110 in this embodiment, and the fixing member is adaptively connected to the flange, thereby improving the stability and reliability of the connection between the first insulating plate 600 and the insulating sleeve 110 and improving the force.

[0076] Optionally, the first insulating plate 600 in this embodiment is elastic, in other words, the first insulating plate 600 is made of a non-rigid material. In this way, when the resistor string vibrates, the first insulating plate 600 can deform slightly, thereby absorbing part of the force, thereby improving the reliability and stability of the closing resistor device.

[0077] For example, the first insulating plate 600 in this embodiment can be made of hard plastic, hard rubber or other materials.

[0078] like Figure 7-Figure 8As shown, in this embodiment, the first conductive plate 700 has a first connecting portion 710, a second connecting portion 720 and a third connecting portion 730, one end of the second connecting portion 720 is connected to the first connecting portion 710, and the other end is connected to the third connecting portion 730, the first connecting portion 710 and the third connecting portion 730 are arranged opposite to each other, the first connecting portion 710 is conductively connected to the resistor 400 located on one side of the first insulating plate 600, and the third connecting portion 730 is conductively connected to the resistor 400 located on the other side of the first insulating plate 600.

[0079] Exemplarily, the first connection part 710, the second connection part 720 and the third connection part 730 are integrally formed, thereby improving the mechanical strength of the first conductive plate 700 and extending its service life. The first connection part 710 and the third connection part 730 are respectively conductively connected to the resistor sheets 400 on both sides of the first conductive plate 700, thereby realizing the series connection of the resistor sheets 400 on both sides of the first conductive plate 700. The second connection part 720 is located at one side end of the first conductive plate 700, and the second connection part 720 has a convex structure. The convex structure can provide a certain buffering effect on the first conductive plate 700 when the resistor string is vibrated by external force, offset stress, reduce or avoid the phenomenon of stress concentration on the first conductive plate 700, and reduce or avoid the risk of tearing the first conductive plate 700.

[0080] Furthermore, if Figure 7-Figure 8 As shown, in this embodiment, a third through hole 740 is provided on the first connecting portion 710, and a fourth through hole 750 is provided on the third connecting portion 730. The third through hole 740 and the fourth through hole 750 are coaxially arranged, so that it is convenient for the insulating rod 500 to pass through the third through hole 740 and the fourth through hole 750, thereby improving the work efficiency of the assembly of the closing resistor device.

[0081] like Figure 4 As shown, in this embodiment, the closing resistor device also includes an elastic component 800, which is sleeved on the insulating rod 500, and the elastic component 800 is located on the side of the first fixed plate 200 away from the resistor string, and the end of the elastic component 800 is connected to the first fixed plate 200.

[0082] By setting the elastic component 800, and one end of the elastic component 800 can be connected to the first fixed plate 200, and a certain pre-tightening force is applied to the first fixed plate 200, so that the two adjacent resistor sheets 400 on the resistor string can be in close contact, and at the same time, the force of the resistor string can be transmitted to the elastic component 800 through the first fixed plate 200, that is, the setting of the elastic component 800 can offset the stress on the resistor string, thereby improving the stability and reliability of the resistor string, ensuring that the two adjacent resistor sheets 400 can be in close contact, reducing the damage or even breakage of the resistor sheet 400 due to vibration, extending the service life, and saving costs. In addition, by setting the elastic component 800, it can be ensured that the two adjacent resistor sheets 400 on the resistor string can be in close contact, thereby improving the electrical connection performance of the resistor sheet 400, avoiding the phenomenon of short circuit, and improving reliability and safety.

[0083] like Figure 4 As shown, specifically, the elastic component 800 includes a spring 810 and a stopper 820, the stopper 820 is connected to the insulating rod 500, the spring 810 is sleeved on the insulating rod 500, and one end of the spring 810 abuts on the first fixing plate 200, and the other end abuts on the stopper 820. In addition, as Figure 4 As shown, a first support plate 850 is disposed at one end of each resistor string away from the spring 810 , the first support plate 850 is connected to the insulating rod 500 , and one side of the first support plate 850 is supported on the battery string.

[0084] When the spring 810 is compressed, the spring 810 can transmit the preload force to the stopper 820, the insulating rod 500, and the first support plate 850 in sequence, so that the first support plate 850 can drive the insulating rod 500 to move in the direction in which the spring 810 is compressed. Figure 2 and Figure 4As shown, when the spring 810 is compressed (preload force is to the left), the first support plate 850 can drive the insulating rod 500 to move to the left, so that the insulating rod 500 has a pulling force to the left, so that the resistor 400 on the insulating rod 500 can be pressed, and then close contact is achieved, reducing the phenomenon of damage or even breakage of the resistor 400 due to vibration, extending the service life, and saving costs. It should be noted that the above-mentioned actions of the insulating rod 500 and the first support plate 850 are all micro actions. It can be understood that when the elastic component 800 provides a leftward force to the insulating rod 500, the first support plate 850 can squeeze the resistor 400 to the left to contact the first conductive plate 700. Since the first insulating plate 600 is made of non-rigid material, a certain amount of deformation will be generated during the squeezing process, so that the resistor 400 on the left side of the first insulating plate 600 can also be subjected to effective squeezing force, avoiding the phenomenon of poor contact between the resistor 400 on the left side of the first insulating plate 600 and the first conductive plate 700.

[0085] Furthermore, the first support plate 850 and the insulating rod 500 may be connected by a snap-fit ​​connection or by other connection methods to improve the stability and reliability of the connection.

[0086] In some embodiments, the limiting member 820 may be threadedly connected to the insulating rod 500 , so that the position of the limiting member 820 on the insulating rod 500 can be adjusted, thereby improving its flexibility and applicability.

[0087] In some embodiments, the stopper 820 is provided with a first groove 830, one end of the spring 810 is located in the first groove 830 and connected to the bottom wall of the first groove 830. For example, one end of the spring 810 is welded to the bottom wall of the first groove 830, thereby improving the reliability and stability of the connection and avoiding the phenomenon of misalignment or loosening of the spring 810. The insulating rod 500 is provided with a second groove 510, and the stopper 820 is provided with a limiting portion 840, which is accommodated in the second groove 510 and movably connected to the second groove 510. In this way, when the spring 810 is compressed, the first support plate 850 drives the insulating rod 500 to move in the direction of the preload force, and the insulating rod 500 can move slightly in the direction of the preload force. In other words, the limiting portion 840 is movably connected to the second groove 510, providing a certain amount of wiggle room for the insulating rod 500 to move in the direction of the preload force, so that the resistor sheet 400 on the resistor string can be compressed.

[0088] like Figure 4As shown, in this embodiment, the closing resistor device further includes a threaded sleeve 900, a threaded hole 310 is provided on the second fixing plate 300, the threaded sleeve 900 is screwed with the threaded hole 310, and the insulating rod 500 is passed through the threaded sleeve 900 and is in clearance with the threaded sleeve 900, so as to facilitate the micro-movement of the insulating rod 500, avoid the interference between the insulating rod 500 and the threaded sleeve 900, and improve the smoothness and reliability of the movement of the insulating rod 500 driven by the first support plate 850. In addition, the setting of the threaded sleeve 900 can also play a certain guiding role in the movement of the insulating rod 500.

[0089] It is understandable that when the first support plate 850 is a conductor, a second insulating plate is provided on one side of the first support plates 850 that contacts the resistor 400, so that the resistors 400 in the two resistor strings can be connected in series, thereby improving reliability and avoiding circuit failures.

[0090] It is understandable that in this embodiment, two elastic components 800 , two first support plates 850 and two threaded sleeves 900 are provided, and each elastic component 800 , each first support plate 850 and each threaded sleeve 900 is adapted to one insulating rod 500 .

[0091] Optionally, the resistor string in this embodiment can be set to be multiple, for example, two, three, four, etc. resistor strings are set. Usually, the resistor string in the closing resistor device is set to two, so this embodiment is described by taking setting two resistor strings as an example. Multiple insulating rods 500 and elastic components 800 are provided, and each resistor string is respectively configured with an insulating rod 500 and an elastic component 800.

[0092] In this embodiment, the closing resistor device further includes at least one second support plate (not shown in the figure), which is located between the plurality of resistor sheets 400 and has a through hole for the insulating rod 500 to pass through.

[0093] By setting the second support plate, when the closing resistor device is subjected to force and vibration, the stress on the resistor 400 can be transferred to the second support plate, thereby reducing the force on the resistor 400, and further reducing the phenomenon of damage or even breakage of the resistor 400 due to vibration, extending the service life and saving costs.

[0094] like Figure 2 . Figure 9-10 As shown, the first through hole 410 on the resistor sheet 400 in this embodiment is located at the center of the resistor sheet 400, which can improve the force uniformity of the resistor sheet 400 and improve the stability and reliability of the closing resistor device.

[0095] like Figure 2 , Fig.11 and Fig.12 As shown, the closing resistor device in this embodiment also includes a plurality of second conductive plates 2000, wherein two second conductive plates 2000 are arranged between two adjacent resistor sheets 400 on a resistor string, and one side of each of the two second conductive plates 2000 extends to the upper surface and the lower surface of a resistor sheet 400 in the adjacent resistor string, respectively, so that the resistor sheets 400 on the plurality of resistor strings are sequentially connected in series and form a series circuit. An insulating pad 3000 is arranged between the two second conductive plates 2000 placed between two adjacent resistor sheets 400 on the same resistor string, and the insulating pad 3000 is used to insulate the two adjacent resistor sheets 400 on the same resistor string.

[0096] Specifically, when the second support plate is a conductor, the connection between the second conductive plate 2000 and the resistor 400 can enable the resistors 400 on a plurality of resistor strings to be electrically connected in series in sequence to form a series circuit.

[0097] It is understandable that no matter how many resistor strings are set, the connection method of the second conductive plate 2000 and the resistor sheet 400 can form a series circuit, thereby improving universality and facilitating operators to set the corresponding number of resistor strings according to actual needs.

[0098] Exemplarily, when the resistor string is set to two, for the convenience of description, the two second conductive plates 2000 are named: second conductive plate 2000A and second conductive plate 2000B, and the two resistor sheets 400 on the two resistor strings are named resistor sheet 400a and resistor sheet 400b respectively: one side of the second conductive plate 2000A is connected to the upper surface of the resistor sheet 400a, the other side of the second conductive plate 2000A is connected to the lower surface of the resistor sheet 400b, one side of the second conductive plate 2000B is connected to the lower surface of the resistor sheet 400a, and the other side of the second conductive plate 2000B is connected to the upper surface of the resistor sheet 400 located below and adjacent to the resistor sheet 400b, thereby achieving the effect of connecting the resistor sheets 400 on the two resistor strings in series in sequence.

[0099] Exemplarily, when the number of resistor strings is three, for ease of description, the resistor sheets 400 on the three resistor strings are defined as resistor sheet 400a, resistor sheet 400b, resistor sheet 400c, resistor sheet 400d and resistor sheet 400e, respectively, wherein resistor sheet 400a and resistor sheet 400e are located on the same resistor string, resistor sheet 400b and resistor sheet 400d are located on the same resistor string, and two second conductive plates 2000 are arranged between two adjacent resistor strings, and the second conductive plates 2000 are respectively defined as second conductive plate 2000A, second conductive plate 2000B, second conductive plate 2000C and second conductive plate 2000D. Among them, one side of the second conductive plate 2000A is connected to the lower surface of the resistor 400a, and the other side is connected to the upper surface of the resistor 400b, one side of the second conductive plate 2000B is connected to the lower surface of the resistor 400b, and the other side is connected to the upper surface of the resistor 400c, one side of the second conductive plate 2000C is connected to the lower surface of the resistor 400c, and the other side is connected to the upper surface of the resistor 400d, one side of the second conductive plate 2000D is connected to the lower surface of the resistor 400d, and the other side is connected to the upper surface of the resistor 400e, thereby achieving the effect of connecting the resistors 400 on the three resistor strings in series in sequence.

[0100] When the second support plate is an insulator, through the connection method of the second conductive plate 2000 and the resistor 400, a series circuit can be formed between two adjacent second support plates, a series circuit can be formed between the second support plate close to the first fixing plate 200 and the first fixing plate 200, and a series circuit can be formed between the second support plate close to the second fixing plate 300 and the second fixing plate 300. The operator can set the number of second support plates according to actual needs to obtain multiple series circuits.

[0101] Furthermore, the second conductive plate 2000 in this embodiment is also provided with a fifth through hole 2001 for the insulating rod 500 to pass through, and the number of the fifth through holes 2001 can be two. A protrusion 2002 is provided in the middle of the second conductive plate 2000, and the protrusion 2002 is located between two adjacent resistor strings. The protrusion 2002 can provide a certain buffering effect on the second conductive plate 2000 when the resistor string is vibrated by an external force, offset the stress, reduce or avoid the stress concentration phenomenon of the second conductive plate 2000, thereby improving the stress of the second conductive plate 2000, avoiding the phenomenon of the second conductive plate 2000 breaking, and extending the service life.

[0102] Optionally, the protrusion 2002 in this embodiment can be configured to be an arc shape, a broken line shape, an irregular shape, etc., and the protrusion direction of the protrusion 2002 is not further limited.

[0103] Optionally, the number of the protrusions 2002 in this embodiment can be set to one, two, three, etc. The operator can flexibly set the number of the protrusions 2002 according to actual needs, which will not be described in detail here.

[0104] like Figure 2 , Fig.13 and Fig.14 As shown, in this embodiment, the upper surface of the insulating pad 3000 is provided with a first step portion 3001, and the lower surface of the insulating pad 3000 is provided with a second step portion 3002. The first step portion 3001 is embedded in the fifth through hole 2001 of the second conductive plate 2000 in contact with the upper surface of the insulating pad 3000, and the second step portion 3002 is embedded in the fifth through hole 2001 of the second conductive plate 2000 in contact with the lower surface of the insulating pad 3000. The arrangement of the insulating pad 3000 can avoid the phenomenon of short circuit and improve safety. The arrangement of the first step portion 3001 and the second step portion 3002 can enable the insulating pad 3000 to play a certain limiting role on the second conductive plate 2000, so that the second conductive plate 2000, the insulating pad 3000 and the resistor 400 can always maintain a concentric arrangement, thereby improving the stability and reliability of the closing resistor device.

[0105] Furthermore, a sixth through hole 3003 for the insulating rod 500 to pass through is also provided on the insulating pad 3000 in this embodiment, and the first step portion 3001 and the second step portion 3002 respectively surround the sixth through hole 3003 of the insulating pad 3000, and the first step portion 3001 and the second step portion 3002 are both coaxially arranged with the sixth through hole 3003 of the insulating pad 3000.

[0106] Optionally, the first through hole 410, the second through hole 610, the third through hole 740, the fourth through hole 750, the fifth through hole 2001 and the sixth through hole 3003 in the present embodiment can be set as circular holes. Of course, the operator can also set them to other shapes according to actual needs, such as square, rectangular or other special shapes, which will not be elaborated here.

[0107] like Fig.15 As shown, in this embodiment, a heightening pad 1000 can also be set between the second support plate and the insulating pad 3000. The setting of the heightening pad 1000 can offset the tolerance problem of assembling multiple resistor sheets 400 on the resistor string, so that the multiple resistor strings can maintain the same height, thereby facilitating installation and maintenance and improving work efficiency.

[0108] Optionally, the present embodiment does not limit the material of the height-increasing pad 1000 , that is, the height-increasing pad 1000 may be made of a conductive material or an insulating material.

[0109] This embodiment also provides a high-voltage switchgear, which includes the above-mentioned closing resistor device. The high-voltage switchgear has high strength, stability and reliability, can reduce the phenomenon of damage or even breakage of the resistor sheet 400 due to vibration, prolong the service life, and achieve the purpose of cost saving.

[0110] Obviously, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0111] Note that in the description of this specification, the reference terms "some embodiments", "other embodiments", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A closing resistor device, characterized in that: include: A fracture assembly (100); A first fixing plate (200) and a second fixing plate (300), wherein the first fixing plate (200) and the second fixing plate (300) are both connected to the fracture assembly (100); A resistor string, the resistor string being arranged between the first fixing plate (200) and the second fixing plate (300), the resistor string comprising a plurality of stacked resistor sheets (400), the resistor sheets (400) being provided with a first through hole (410); An insulating rod (500), wherein the insulating rod (500) is inserted into the first through hole (410), and two ends of the insulating rod (500) are respectively inserted into the first fixing plate (200) and the second fixing plate (300); a first insulating plate (600), the first insulating plate (600) being sleeved on the insulating rod (500), the first insulating plate (600) being located in the middle area of ​​the resistor string, and the first insulating plate (600) being connected to the fracture assembly (100); A first conductive plate (700), wherein the first conductive plate (700) is sleeved on the insulating rod (500), and one end of the first conductive plate (700) is conductively connected to the resistor (400) located on one side of the first insulating plate (600), and the other end of the first conductive plate (700) is conductively connected to the resistor (400) located on the other side of the first insulating plate (600).

2. The closing resistor device according to claim 1, characterized in that: The first insulating plate (600) is provided with a second through hole (610) and a first mounting hole (620), the insulating rod (500) is inserted into the second through hole (610), and the closing resistor device further comprises a fixing member, the fixing member is inserted into the first mounting hole (620) and is connected to the fracture assembly (100).

3. The closing resistor device according to claim 2, characterized in that: The fracture assembly (100) is provided with an insulating sleeve (110), the insulating sleeve (110) is provided with a flange, and the fixing member is adaptively connected to the flange.

4. The closing resistor device according to claim 2, characterized in that: The first insulating plate (600) has elasticity.

5. The closing resistor device according to claim 1, characterized in that: The first conductive plate (700) comprises a first connecting portion (710), a second connecting portion (720) and a third connecting portion (730); one end of the second connecting portion (720) is connected to the first connecting portion (710), and the other end is connected to the third connecting portion (730); the first connecting portion (710) and the third connecting portion (730) are arranged opposite to each other; the first connecting portion (710) is conductively connected to the resistor (400) located on one side of the first insulating plate (600); and the third connecting portion (730) is conductively connected to the resistor (400) located on the other side of the first insulating plate (600).

6. The closing resistor device according to claim 5, characterized in that: The first connecting portion (710) is provided with a third through hole (740), the third connecting portion (730) is provided with a fourth through hole (750), the third through hole (740) and the fourth through hole (750) are coaxially arranged, and the insulating rod (500) is passed through the third through hole (740) and the fourth through hole (750).

7. The closing resistor device according to claim 1, characterized in that: The closing resistor device further comprises an elastic component (800), the elastic component (800) being sleeved on the insulating rod (500), and the elastic component (800) being located on a side of the first fixing plate (200) away from the resistor string, one end of the elastic component (800) being in contact with the first fixing plate (200), and the other end of the elastic component (800) being connected to the insulating rod (500).

8. The closing resistor device according to claim 7, characterized in that: The resistor string, the insulating rod (500) and the elastic component (800) are all provided in plurality, and each resistor string is respectively configured with one insulating rod (500) and one elastic component (800); The closing resistor device further comprises a plurality of second conductive plates (2000), wherein two second conductive plates (2000) are arranged between two adjacent resistor sheets (400) on one resistor string, and one side of each of the two second conductive plates (2000) respectively extends to the upper surface and the lower surface of one resistor sheet (400) in the adjacent resistor string, so that the resistor sheets (400) on the plurality of resistor strings are sequentially connected in series to form a series circuit; An insulating pad (3000) is provided between two of the second conductive plates (2000) disposed between two adjacent resistor sheets (400) on the same resistor string.

9. The closing resistor device according to claim 8, characterized in that: A protrusion (2002) is provided in the middle of the second conductive plate (2000), and the protrusion (2002) is located between two adjacent resistor strings.

10. The closing resistor device according to claim 1, characterized in that: The closing resistor device further comprises a threaded sleeve (900), a threaded hole (310) is provided on the second fixing plate (300), the threaded sleeve (900) is threadedly connected to the threaded hole (310), and the insulating rod (500) is passed through the threaded sleeve (900) and is loosely matched with the threaded sleeve (900).

11. High voltage switchgear, characterized in that The invention comprises a closing resistor device as described in any one of claims 1 to 10.

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