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 first fixed plate, a second fixed plate, a resistor string, a first insulating rod and an elastic component. The resistor string is arranged between the first fixed plate and the second fixed plate, and the resistor string comprises a plurality of stacked resistor sheets, and a first through hole is provided on the resistor sheet. The first insulating rod is passed through the first through hole, and the two ends of the first insulating rod are respectively passed through the first fixed plate and the second fixed plate. The elastic component is sleeved on the first insulating rod, and the elastic component is located on the side of the second fixed plate away from the resistor string, the end of the elastic component is connected to the second fixed plate, and the elastic component can enable the second fixed plate to apply a pre-tightening force to the resistor sheet in the stacking direction. The closing resistor device has 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 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 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 string in the closing resistor device will vibrate to a certain extent, which will cause a certain degree of damage to the resistor sheet on the resistor string. In severe cases, the resistor sheet will be broken, 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 sheet caused by vibration and impact, and extend its service life. Utility Model Content

[0003] The first purpose of the utility model is to provide a closing resistor device to improve its stability and reliability, extend its service life and save costs.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a closing resistor device, comprising:

[0006] a first fixing plate and a second fixing plate;

[0007] 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;

[0008] A first insulating rod, wherein the first insulating rod is inserted into the first through hole, and two ends of the first insulating rod are inserted into the first fixing plate and the second fixing plate respectively;

[0009] An elastic component is sleeved on the first insulating rod, and the elastic component is located on a side of the second fixing plate away from the resistor string, and an end of the elastic component is connected to the second fixing plate.

[0010] As an optional technical solution for a closing resistor device, the elastic component includes a spring and a limiter, the limiter is connected to the first insulating rod, the spring is sleeved on the first insulating rod, and one end of the spring abuts against the second fixed plate, and the other end abuts against the limiter, and the position of the limiter on the first insulating rod along the axial direction of the first insulating rod is adjustable.

[0011] As an optional technical solution for a closing resistor device, the limiter includes a third fixed plate and a first fastener, the third fixed plate is sleeved on the first insulating rod, the other end of the spring abuts against the third fixed plate, the first fastener is threadedly connected to the first insulating rod, and the first fastener is located on a side of the third fixed plate away from the spring, and an end face of the first fastener contacts an end face of the third fixed plate.

[0012] As an optional technical solution for a closing resistor device, the closing resistor device also includes a second insulating rod, both ends of which pass through the first fixed plate and the second fixed plate respectively, and the end of the second insulating rod passing through the first fixed plate and the end of the second insulating rod passing through the second fixed plate are both threadedly connected with a second fastener.

[0013] As an optional technical solution for the closing resistor device, two resistor strings are provided, and one of the first insulating rods is respectively passed through the two resistor strings. The two first insulating rods and one second insulating rod are arranged in a triangle.

[0014] As an optional technical solution for a closing resistor device, the closing resistor device further includes at least one support plate, the support plate is located between the resistor sheets, and the support plate is provided with a second through hole for the first insulating rod to pass through and a third through hole for the second insulating rod to pass through.

[0015] As an optional technical solution of a closing resistor device, a plurality of resistor strings are provided, and each resistor string is respectively configured with one first insulating rod and one elastic component;

[0016] The closing resistor device further comprises a plurality of conductive plates, wherein two conductive plates are arranged between two adjacent resistor sheets on one resistor string, and one side of each of the two 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;

[0017] An insulating pad is arranged between two conductive plates disposed between two adjacent resistor sheets on the same resistor string.

[0018] As an optional technical solution for the closing resistor device, the conductive plate is provided with a fourth through hole for the first insulating rod to pass through;

[0019] The insulating pad is provided with a fifth through hole for the first insulating rod to pass through, and the insulating pad is provided with a first step portion and a second step portion on both sides surrounding the fifth through hole, respectively, and the first step portion and the second step portion are respectively embedded in the fourth through hole of the conductive plate in contact with both sides of the insulating pad.

[0020] As an optional technical solution for the closing resistor device, a protrusion is provided in the middle of the conductive plate, and the protrusion is located between two adjacent resistor strings.

[0021] The second purpose of the utility model is to provide a high-voltage switch device, which has high strength, stability and reliability, can reduce the damage or even breakage of resistors due to vibration, extend the service life, and achieve the purpose of cost saving.

[0022] To achieve this purpose, the utility model adopts the following technical solutions:

[0023] The utility model provides a high-voltage switch device, comprising the above-mentioned closing resistance device.

[0024] The beneficial effects of the utility model include at least:

[0025] The utility model provides a closing resistor device, which includes a first fixed plate, a second fixed plate, a resistor string, a first insulating rod and an elastic component. 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 sheets. The first insulating rod is inserted into the first through hole, and the two ends of the first insulating rod are respectively inserted into the first fixed plate and the second fixed plate. The elastic component is sleeved on the first insulating rod, and the elastic component is located on the side of the second fixed plate away from the resistor string. The end of the elastic component is connected to the second fixed plate, and the elastic component enables the second fixed plate to apply a pre-tightening force to the plurality of resistor sheets in the stacking direction. The arrangement of the first insulating rod enables the plurality of resistor sheets to be inserted into the first insulating rod, and then the plurality of resistor sheets can be limited, so as to avoid the phenomenon of the resistor sheets on the resistor string being misplaced when the circuit breaker is operated, thereby improving the stability and reliability of the resistor string. At the same time, since the resistor string will be subjected to a certain vibration when the operator operates the circuit breaker, the elastic component is set, and one end of the elastic component can be connected to the second fixed plate, and a certain pre-tightening force is applied to the second fixed plate, so that the two adjacent resistor sheets on the resistor string can be in close contact, and the force of the resistor string can be transmitted to the elastic component through the second fixed plate. In other words, the stress on the resistor string can be offset by the setting of the elastic component, thereby improving the stability and reliability of the resistor string, ensuring that the two adjacent resistor sheets can be in close contact, reducing the phenomenon of damage or even breakage of the resistor sheets due to vibration, extending the service life, and saving costs.

[0026] 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 resistor sheets due to vibration, prolong service life, and achieve the purpose of cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 A schematic diagram of the structure of the resistor string assembly provided by the embodiment of the utility model;

[0029] Figure 2 A schematic diagram of the structure of the elastic component and the second fixing plate provided in an embodiment of the utility model;

[0030] Figure 3 A front view of a resistor provided by an embodiment of the utility model;

[0031] Figure 4 A side view of a resistor provided by an embodiment of the utility model;

[0032] Figure 5 A front view of a support plate provided by an embodiment of the utility model;

[0033] Figure 6 A front view of a conductive plate provided in an embodiment of the utility model;

[0034] Figure 7 A side view of a conductive plate provided by an embodiment of the utility model;

[0035] Figure 8 A front view of an insulating pad provided by an embodiment of the utility model;

[0036] Fig. 9 A side view of an insulating pad provided in an embodiment of the utility model.

[0037] Reference numerals

[0038] 100, second fixing plate; 200, resistor string; 210, resistor sheet; 220, first through hole; 300, first insulating rod; 400, elastic component; 410, spring; 420, third fixing plate; 430, first fastener; 500, support plate; 510, second through hole; 520, third through hole; 600, conductive plate; 610, fourth through hole; 620, raised portion; 700, insulating pad; 710, first step portion; 720, second step portion; 730, fifth through hole; 800, heightening pad. DETAILED DESCRIPTION

[0039] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] 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.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] In the description of this embodiment, unless otherwise specified, the term "plurality" refers to a quantity of two or more than two.

[0044] This embodiment provides a closing resistor device, which can improve its stability and reliability, reduce damage to the resistor sheet caused by vibration and impact, extend its service life, and save costs.

[0045] like Figure 1-Figure 4 As shown, the closing resistor device mainly includes a first fixed plate (not shown in the figure), a second fixed plate 100, a resistor string 200, a first insulating rod 300 and an elastic component 400. Among them, the resistor string 200 is arranged between the first fixed plate and the second fixed plate 100, and the resistor string 200 includes a plurality of stacked resistor sheets 210, and a first through hole 220 is opened on the resistor sheet 210. The first insulating rod 300 is inserted into the first through hole 220, and the two ends of the first insulating rod 300 are respectively inserted into the first fixed plate and the second fixed plate 100. The elastic component 400 is sleeved on the first insulating rod 300, and the elastic component 400 is located on the side of the second fixed plate 100 away from the resistor string 200, and the end of the elastic component 400 is connected to the second fixed plate 100, and the elastic component 400 can enable the second fixed plate 100 to apply a pre-tightening force to the plurality of resistor sheets 210 in the direction of their stacking.

[0046] Based on the above design, in this embodiment, the first fixed plate and the second fixed plate 100 are both made of metal material to improve their strength and reliability. The multiple resistor sheets 210 are stacked and arranged. The multiple resistor sheets 210 can be inserted into the first insulating rod 300 through the arrangement of the first insulating rod 300, so that the multiple resistor sheets 210 can be limited, thereby avoiding the resistor sheets 210 on the resistor string 200 from being misplaced when operating the circuit breaker (not shown in the figure), thereby improving the stability and reliability of the resistor string 200.

[0047] When the operator operates the circuit breaker, the resistor string 200 will be subjected to a certain vibration. Through the setting of the elastic component 400, one end of the elastic component 400 can be connected to the second fixed plate 100, and a certain pre-tightening force is applied to the second fixed plate 100, so that the two adjacent resistor sheets 210 on the resistor string 200 can be in close contact, and the force of the resistor string 200 can be transmitted to the elastic component 400 through the second fixed plate 100. In other words, the setting of the elastic component 400 can offset the stress on the resistor string 200, thereby improving the stability and reliability of the resistor string 200, ensuring that the two adjacent resistor sheets 210 can be in close contact, reducing the damage or even breakage of the resistor sheet 210 due to vibration, extending the service life, and saving costs. In addition, through the setting of the elastic component 400, it can be ensured that the two adjacent resistor sheets 210 on the resistor string 200 can be in close contact, thereby improving the electrical connection performance of the resistor sheet 210, avoiding the phenomenon of circuit breaking, and improving reliability and safety.

[0048] like Figure 2As shown, in this embodiment, the elastic component 400 includes a spring 410 and a stopper, the stopper is connected to the first insulating rod 300, the spring 410 is sleeved on the first insulating rod 300, and one end of the spring 410 abuts on the second fixing plate 100, and the other end abuts on the stopper, so that the spring 410 is in a compressed state. The position of the stopper on the first insulating rod 300 along the axial direction of the first insulating rod 300 is adjustable.

[0049] Specifically, the limiting member includes a third fixing plate 420 and a first fastener 430. The third fixing plate 420 is sleeved on the first insulating rod 300. The other end of the spring 410 abuts against the third fixing plate 420. The first fastener 430 is threadedly connected to the first insulating rod 300. The first fastener 430 is located on the side of the third fixing plate 420 away from the spring 410. The end face of the first fastener 430 contacts the end face of the third fixing plate 420.

[0050] Optionally, the third fixing plate 420 is made of metal material to improve its strength and reliability and extend its service life. One end of the spring 410 is welded to the second fixing plate 100, and the other end is welded to the third fixing plate 420. The spring 410 is in a compressed state, so that the spring 410 can apply a certain pre-tightening force to the second fixing plate 100, thereby enabling the resistor 210 on the resistor string 200 to be in close contact, reducing the damage or even breakage of the resistor 210 due to vibration, extending the service life, and saving costs.

[0051] Optionally, the first fastener 430 can be set as a nut. By screwing the first fastener 430 onto the first insulating rod 300 and making the first fastener 430 contact with the third fixing plate 420, the stability and reliability of the third fixing plate 420 can be enhanced, preventing the third fixing plate 420 from falling off the first insulating rod 300.

[0052] In this embodiment, the closing resistor device also includes a second insulating rod (not shown in the figure), both ends of the second insulating rod pass through the first fixed plate and the second fixed plate 100 respectively, and the end of the second insulating rod passing through the first fixed plate and the end of the second insulating rod passing through the second fixed plate 100 are both threadedly connected with a second fastener.

[0053] Specifically, the second fastener in this embodiment can be set as a nut. The setting of the second fastener can improve the stability and reliability of the connection between the second insulating rod and the first fixing plate and the second fixing plate 100, and also facilitate the subsequent disassembly and maintenance work, thereby improving work efficiency.

[0054] In addition, one end of the first insulating rod 300 in this embodiment passes through the first fixing plate, and the end of the first insulating rod 300 passing through the first fixing plate is also provided with a nut, and the other end of the first insulating rod 300 passes through the third fixing plate 420, and the end of the first insulating rod 300 passing through the third fixing plate 420 is threadedly connected with a first fastener 430, thereby improving the stability and reliability of the closing resistor device.

[0055] Optionally, the resistor string 200 in this embodiment can be set to multiple, for example, two, three, four, etc. resistor strings 200 are set. In this embodiment, two resistor strings 200 are set as an example for explanation. There are multiple first insulating rods 300 and elastic components 400, and each resistor string 200 is respectively configured with a first insulating rod 300 and an elastic component 400. The two resistor strings 200 are respectively penetrated with a first insulating rod 300, and the two first insulating rods 300 and the second insulating rod form a triangle. For example, the stability of the triangle can reduce the damage or even breakage of the resistor sheet 210 due to vibration, extend the service life, and save costs.

[0056] like Figure 1 and Figure 5 As shown, in this embodiment, the closing resistor device also includes at least one support plate 500, which is located between the multiple resistor sheets 210. The support plate 500 is provided with a second through hole 510 for the first insulating rod 300 to pass through and a third through hole 520 for the second insulating rod to pass through.

[0057] Optionally, the support plate 500 in this embodiment can be provided in plurality, for example, two, three, four, etc. support plates 500 are provided on each resistor string 200. This embodiment does not limit the height position of the support plate 500, the specific shape of the support plate 500, and the material. The second through holes 510 on the support plate 500 are provided in a one-to-one correspondence with the first insulating rod 300. For example, two second through holes 510 can be provided on the support plate 500 in this embodiment, and the two second through holes 510 are symmetrically provided about the axis of the third through hole 520, thereby improving the stability of the force on the closing resistor device and improving its reliability.

[0058] By setting the support plate 500, when the closing resistor device is subjected to force and vibration, the stress on the resistor 210 can be transferred to the support plate 500, thereby reducing the force on the resistor 210, and further reducing the phenomenon of damage or even breakage of the resistor 210 due to vibration, thereby extending the service life and saving costs.

[0059] like Figure 1 , Figure 6 and Figure 7As shown, the closing resistor device in this embodiment further includes a plurality of conductive plates 600, wherein two conductive plates 600 are arranged between two adjacent resistor sheets 210 on a resistor string 200, and one side of each of the two conductive plates 600 extends to the upper surface and the lower surface of a resistor sheet 210 in the adjacent resistor string 200, respectively, so that the resistor sheets 210 on the plurality of resistor strings 200 are sequentially connected in series and form a series circuit. An insulating pad 700 is arranged between the two conductive plates 600 placed between two adjacent resistor sheets 210 on the same resistor string 200, and the insulating pad 700 is used to insulate the two adjacent resistor sheets 210 on the same resistor string 200.

[0060] Specifically, when the support plate 500 is a conductor, the connection between the conductive plate 600 and the resistor 210 can enable the resistors 210 on the plurality of resistor strings 200 to be electrically connected in series in sequence to form a series circuit.

[0061] It is understandable that no matter how many resistor strings 200 are set, the connection method of the conductive plate 600 and the resistor sheet 210 can form a series circuit, thereby improving universality and facilitating operators to set the corresponding number of resistor strings 200 according to actual needs.

[0062] Exemplarily, when the resistor string 200 is set to two, for the convenience of description, the two conductive plates 600 are named: conductive plate 600A and conductive plate 600B, and the two resistor sheets 210 on the two resistor strings 200 are named as resistor sheets 210a and resistor sheets 210b respectively: one side of the conductive plate 600A is connected to the upper surface of the resistor sheet 210a, the other side of the conductive plate 600A is connected to the lower surface of the resistor sheet 210b, one side of the conductive plate 600B is connected to the lower surface of the resistor sheet 210a, and the other side of the conductive plate 600B is connected to the upper surface of the resistor sheet 210 located below and adjacent to the resistor sheet 210b, thereby achieving the effect of connecting the resistor sheets 210 on the two resistor strings 200 in series in sequence.

[0063] Exemplarily, when the resistor string 200 is set to three, for the convenience of description, the resistor sheets 210 on the three resistor strings 200 are defined as resistor sheet 210a, resistor sheet 210b, resistor sheet 210c, resistor sheet 210d and resistor sheet 210e in sequence, wherein resistor sheet 210a and resistor sheet 210e are located on the same resistor string 200, resistor sheet 210b and resistor sheet 210d are located on the same resistor string 200, and two conductive plates 600 are arranged between two adjacent resistor strings 200, and the conductive plates 600 are respectively defined as conductive plate 600A, conductive plate 600B, conductive plate 600C, and conductive plate 600D. Among them, one side of the conductive plate 600A is connected to the lower surface of the resistor 210a, and the other side is connected to the upper surface of the resistor 210b, one side of the conductive plate 600B is connected to the lower surface of the resistor 210b, and the other side is connected to the upper surface of the resistor 210c, one side of the conductive plate 600C is connected to the lower surface of the resistor 210c, and the other side is connected to the upper surface of the resistor 210d, one side of the conductive plate 600D is connected to the lower surface of the resistor 210d, and the other side is connected to the upper surface of the resistor 210e, thereby achieving the effect of connecting the resistors 210 on the three resistor strings 200 in series in sequence.

[0064] When the support plate 500 is an insulator, through the connection method of the conductive plate 600 and the resistor 210, a series circuit can be formed between two adjacent support plates 500, a series circuit can be formed between the support plate 500 close to the first fixing plate and the first fixing plate, and a series circuit can be formed between the support plate 500 close to the second fixing plate 100 and the second fixing plate 100. The operator can set the number of support plates 500 according to actual needs, thereby obtaining multiple series circuits.

[0065] Furthermore, the conductive plate 600 in this embodiment is also provided with a fourth through hole 610 for the first insulating rod 300 to pass through, and two fourth through holes 610 can be provided. A protrusion 620 is provided in the middle of the conductive plate 600, and the protrusion 620 is located between two adjacent resistor strings 200. The provision of the protrusion 620 can provide a certain buffering effect on the conductive plate 600 when the resistor string 200 is subjected to external force vibration, offset stress, reduce or avoid stress concentration on the conductive plate 600, thereby improving the force on the conductive plate 600, avoiding the phenomenon of fracture of the conductive plate 600, and extending the service life.

[0066] Optionally, the raised portion 620 in this embodiment may be configured to be in an arc shape, a folded line shape, an irregular shape, etc., and the raised direction of the raised portion 620 is not further limited.

[0067] like Figure 1 , Figure 8 and Fig. 9As shown, in this embodiment, the upper surface of the insulating pad 700 is provided with a first step portion 710, and the lower surface of the insulating pad 700 is provided with a second step portion 720. The first step portion 710 is embedded in the fourth through hole 610 of the conductive plate 600 in contact with the upper surface of the insulating pad 700, and the second step portion 720 is embedded in the fourth through hole 610 of the conductive plate 600 in contact with the lower surface of the insulating pad 700. The setting of the insulating pad 700 can avoid the phenomenon of short circuit and improve safety. The setting of the first step portion 710 and the second step portion 720 can enable the insulating pad 700 to play a certain limiting role on the conductive plate 600, so that the conductive plate 600, the insulating pad 700 and the resistor 210 can always maintain a concentric setting, thereby improving the stability and reliability of the closing resistor device.

[0068] Furthermore, a fifth through hole 730 for the first insulating rod 300 to pass through is also provided on the insulating pad 700 in this embodiment, and the first step portion 710 and the second step portion 720 respectively surround the fifth through hole 730 of the insulating pad 700, and the first step portion 710 and the second step portion 720 are both coaxially arranged with the fifth through hole 730 of the insulating pad 700.

[0069] Optionally, the first through hole 220, the second through hole 510, the third through hole 520, the fourth through hole 610 and the fifth through hole 730 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.

[0070] like Figure 1 As shown, in the present embodiment, a heightening pad 800 can be further provided between the support plate 500 and the insulating pad 700. The provision of the heightening pad 800 can offset the tolerance problem of assembling the multiple resistor sheets 210 on the resistor string 200, so that the multiple resistor strings 200 can maintain the same height, thereby facilitating installation and maintenance and improving work efficiency.

[0071] Optionally, the present embodiment does not limit the material of the height-increasing pad 800 , that is, the height-increasing pad 800 may be made of a conductive material or an insulating material.

[0072] 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 210 due to vibration, prolong the service life, and achieve the purpose of cost saving.

[0073] 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.

[0074] 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 first fixing plate and a second fixing plate (100); A resistor string (200), the resistor string (200) being arranged between the first fixing plate and the second fixing plate (100), the resistor string (200) comprising a plurality of stacked resistor sheets (210), the resistor sheets (210) being provided with a first through hole (220); A first insulating rod (300), the first insulating rod (300) being inserted into the first through hole (220), and two ends of the first insulating rod (300) being inserted into the first fixing plate and the second fixing plate (100) respectively; An elastic component (400), wherein the elastic component (400) is sleeved on the first insulating rod (300), and the elastic component (400) is located on a side of the second fixing plate (100) away from the resistor string (200), and an end of the elastic component (400) is connected to the second fixing plate (100).

2. The closing resistor device according to claim 1, characterized in that: The elastic component (400) comprises a spring (410) and a limiter, wherein the limiter is connected to the first insulating rod (300), the spring (410) is sleeved on the first insulating rod (300), and one end of the spring (410) abuts against the second fixing plate (100), and the other end abuts against the limiter, and the position of the limiter on the first insulating rod (300) along the axial direction of the first insulating rod (300) is adjustable.

3. The closing resistor device according to claim 2, characterized in that: The limiting component comprises a third fixing plate (420) and a first fastener (430); the third fixing plate (420) is sleeved on the first insulating rod (300); the other end of the spring (410) abuts against the third fixing plate (420); the first fastener (430) is threadedly connected to the first insulating rod (300); and the first fastener (430) is located on a side of the third fixing plate (420) away from the spring (410); and an end surface of the first fastener (430) contacts an end surface of the third fixing plate (420).

4. The closing resistor device according to claim 1, characterized in that: The closing resistor device also includes a second insulating rod, two ends of which pass through the first fixing plate and the second fixing plate (100) respectively, and the end of the second insulating rod passing through the first fixing plate and the end of the second insulating rod passing through the second fixing plate (100) are both threadedly connected with a second fastener.

5. The closing resistor device according to claim 4, characterized in that: The resistor strings (200) are provided in two numbers, and one of the first insulating rods (300) is respectively passed through the two resistor strings (200), and the two first insulating rods (300) and one second insulating rod are arranged in a triangle.

6. The closing resistor device according to claim 4, characterized in that: The closing resistor device further comprises at least one support plate (500), the support plate (500) being located between the resistor sheets (210), and the support plate (500) being provided with a second through hole (510) for the first insulating rod (300) to pass through and a third through hole (520) for the second insulating rod to pass through.

7. The closing resistor device according to claim 1, characterized in that: A plurality of the resistor strings (200) are provided, and each resistor string (200) is respectively configured with one of the first insulating rods (300) and one of the elastic components (400); The closing resistor device further comprises a plurality of conductive plates (600), wherein two conductive plates (600) are arranged between two adjacent resistor sheets (210) on one resistor string (200), and one side of each of the two conductive plates (600) respectively extends to the upper surface and the lower surface of one resistor sheet (210) in the adjacent resistor string (200), so that the resistor sheets (210) on the plurality of resistor strings (200) are sequentially connected in series to form a series circuit; An insulating pad (700) is provided between two conductive plates (600) disposed between two adjacent resistor sheets (210) on the same resistor string (200).

8. The closing resistor device according to claim 7, characterized in that: The conductive plate (600) is provided with a fourth through hole (610) for the first insulating rod (300) to pass through; The insulating pad (700) is provided with a fifth through hole (730) for the first insulating rod (300) to pass through, and the insulating pad (700) is provided with a first step portion (710) and a second step portion (720) on both sides surrounding the fifth through hole (730), and the first step portion (710) and the second step portion (720) are respectively embedded in the fourth through hole (610) of the conductive plate (600) in contact with both sides of the insulating pad (700).

9. The closing resistor device according to claim 7, characterized in that: A protrusion (620) is provided in the middle of the conductive plate (600), and the protrusion (620) is located between two adjacent resistor strings (200).

10. High voltage switchgear, characterized in that: The invention comprises a closing resistor device as described in any one of claims 1 to 9.

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