Damping resistor

Abstract

The utility model discloses a damping resistor, and belongs to the technical field of electrics. The damping resistor comprises an end plate assembly, a resistor assembly and a plurality of radiating tubes. Wherein the resistor assembly comprises a plurality of resistor structures which are connected in series, and the resistor structures can be protected by arranging the radiating tubes on the outer sides of the resistor structures in a sleeving manner, so that the protection property of the damping resistor is improved, and the problem that the protection property of the damping resistor in the related technology is relatively poor can be solved. Moreover, the plurality of resistor structures are arranged at intervals, and the heat dissipation pipes can carry out radiation heat dissipation on the resistor structures, so that the heat generated by the resistor structures can be timely dissipated to the external environment through a plurality of heat dissipation modes such as heat radiation and heat convection, and the heat dissipation performance of the damping resistor is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical technology field especially relates to a damping resistor. BACKGROUND

[0002] With the development of electrical technology, damping resistor is widely used in electronic equipment, medical instruments and industrial control fields such as computer, communication equipment, automobile electronics and electric dust collector.

[0003] The main role of damping resistor is to effectively absorb the high harmonic component of rectifier transformer secondary circuit, prevent the output circuit from resonating, thereby effectively protecting rectifier transformer. Usually, damping resistor is composed of two end connection cover, corundum porcelain bottle and resistance wire, the corundum porcelain bottle has spiral type wire slot, and the resistance wire is wound into spiral shape and then is wound in the spiral type wire slot on the corundum porcelain bottle. When there is an oscillation signal in the system, the damping resistor can convert the oscillation signal into heat, consume the energy in the system, and achieve the purpose of stabilizing the system.

[0004] However, the resistance wire in the existing damping resistor is exposed to the external environment, resulting in poor protection of the damping resistor. UTILITY MODEL CONTENT

[0005] The utility model embodiment provides a damping resistor. Can solve the problem of poor protection of damping resistor in the prior art, and the technical scheme is as follows:

[0006] The damping resistor comprises:

[0007] A terminal plate assembly, the terminal plate assembly comprises two opposite insulating terminal plates;

[0008] A resistance assembly, the resistance assembly comprises a plurality of series-connected resistance structures, two ends of any one of the resistance structures are respectively mounted on the two insulating terminal plates, and the plurality of resistance structures are distributed at intervals;

[0009] A plurality of heat dissipation pipes, the plurality of heat dissipation pipes correspond to the plurality of resistance structures one by one, the heat dissipation pipe is sleeved outside the corresponding resistance structure, and the heat dissipation pipe is used for radiating and dissipating heat of the resistance structure.

[0010] Optionally, any one of the resistance structures is strip-shaped, and the plurality of resistance structures are uniformly arranged in the arrangement direction of the two insulating terminal plates.

[0011] Optionally, the resistance assembly further comprises a plurality of first connecting pieces, any one of the resistance structures comprises a resistance part and two connecting parts;

[0012] The two connecting parts are located at two ends of the resistance part respectively, and the two connecting parts are electrically connected with the resistance part.

[0013] The first connecting pieces are respectively arranged at two ends of the plurality of resistance structures, and two ends of each of the first connecting pieces are electrically connected with two connecting portions respectively to connect the plurality of resistance structures in series.

[0014] Optionally, the damping resistor further comprises two terminal posts, and the resistance assembly further comprises two second connecting pieces.

[0015] The two terminal posts are respectively arranged on the two insulating end plates.

[0016] The two second connecting pieces are respectively arranged at two ends of the plurality of resistance structures, and each of the second connecting pieces is electrically connected with the connecting portion and the terminal post respectively.

[0017] Optionally, each of the insulating end plates is provided with a plurality of mounting holes, and each of the connecting portions is provided with an annular limiting groove.

[0018] The plurality of resistance structures correspond to the plurality of mounting holes one by one, the connecting portion of the resistance structure is arranged in the corresponding mounting hole, and part of the insulating end plate is clamped in the annular limiting groove.

[0019] The connecting portion comprises a connecting screw rod and two connecting bolts, the two connecting bolts are sleeved on the connecting screw rod, and the two connecting bolts surround the annular limiting groove.

[0020] The connecting screw rod is arranged in the mounting hole, the two connecting bolts are respectively arranged on two sides of the insulating end plate, and abut against the insulating end plate.

[0021] Optionally, the first connecting piece is in a strip shape, and two ends of the first connecting piece are provided with connecting holes, the connecting screw rod is arranged in the connecting hole, and the first connecting piece abuts against the connecting bolt and the insulating end plate respectively.

[0022] Optionally, the resistance structure comprises a metal resistance wire, and the heat dissipation pipe comprises a milky white quartz pipe or a light-transmitting quartz pipe.

[0023] Optionally, the resistance structure comprises a carbon fiber resistance wire, and the heat dissipation pipe comprises a light-transmitting quartz pipe.

[0024] Optionally, the insulating end plate is in a circular shape, the terminal post is arranged in a middle region of the insulating end plate, and the plurality of resistance structures are uniformly arranged along edges of the insulating end plate.

[0025] The technical scheme provided by the embodiment of the utility model has the beneficial effects that:

[0026] A damping resistor is provided, which comprises an end plate assembly, a resistance assembly and a plurality of heat dissipation pipes. The resistance assembly comprises a plurality of resistance structures connected in series. The resistance structures are protected by the heat dissipation pipes arranged outside the resistance structures, so that the protection performance of the damping resistor is improved, and the poor protection performance of the damping resistor in the prior art is solved. In addition, the resistance structures are arranged at intervals, and the heat dissipation pipes can radiate heat from the resistance structures, so that the heat generated by the resistance structures can be dissipated to the external environment in time through various heat dissipation modes such as heat radiation and heat convection, and the heat dissipation performance of the damping resistor is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a structural schematic view of a damping resistor provided by the embodiments of the present application;

[0029] Figure 2 is a series connection schematic view of a resistance assembly provided by the embodiments of the present application;

[0030] Figure 3 is Figure 1 the left view of the damping resistor shown in the figure;

[0031] Figure 4 is Figure 1 the right view of the damping resistor shown in the figure;

[0032] Figure 5 is a structural schematic view of a resistance structure and a heat dissipation pipe provided by the embodiments of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0034] Although the present application can be easily embodied as different forms of embodiments, only some specific embodiments are shown in the drawings and described in detail in the present specification, and it can be understood that the present specification should be regarded as a demonstrative description of the principles of the present application, and is not intended to limit the present application to what is described herein.

[0035] Thus, one feature that is described in the specification will be used to illustrate one feature of an embodiment of the application, and is not meant to imply that every embodiment of the application must have that feature. Moreover, it should be noted that the specification describes many features. Although certain features can be combined in one embodiment, these features can also be used in other embodiments that do not explicitly mention the combination. Thus, unless otherwise noted, the combination of features is not intended to limit the application.

[0036] In the embodiments shown in the drawings, the indications of direction, such as up, down, left, right, horizontal, vertical, front and back, are used to explain the structure and movement of the various elements of the application are not absolute but relative. These indications are appropriate when the elements are in the position shown in the drawings. If the position of the elements changes, the indications of direction also change accordingly.

[0037] The electric dust collector is a device that uses a high-voltage DC electric field to charge dust and capture dust through the action of the electric field. The electric dust collector is mainly used to remove dust particles in industrial waste gas, ensuring the safety and hygiene of the environment. The electric dust collector includes a rectifier transformer and a damping resistor. The rectifier transformer is used to convert high-voltage alternating current into high-voltage direct current, thereby meeting the demand of the electric dust collector for a direct current electric field. During the operation of the electric dust collector, due to changes in working conditions, dust concentration, and other reasons, flashover may occur in the electric field of the electric dust collector, thereby generating high-frequency oscillating electromagnetic waves with large amplitude on the secondary circuit of the rectifier transformer. These high-frequency electromagnetic waves not only cause radio interference and affect the control device, but also affect the operation of the rectifier transformer. Therefore, the damping resistor can absorb the high-order harmonic components of the secondary circuit of the rectifier transformer, prevent resonance from occurring in the output circuit, effectively protect the rectifier transformer, and convert the oscillation signal in the circuit into heat, thereby eliminating oscillation and stabilizing the operation of the electric dust collector.

[0038] In the related art, the damping resistor commonly used in the electric dust collector is composed of a terminal cover at both ends, a corundum porcelain bottle, and a resistance wire. The corundum porcelain bottle has a spiral groove, and the resistance wire is wound into a spiral shape and then wound in the spiral groove on the corundum porcelain bottle. During the operation of the electric dust collector, the resistance wire generates heat due to the flow of current, and the heat generated by the part of the resistance wire in contact with the corundum porcelain bottle is first conducted to the corundum porcelain bottle, and then the corundum porcelain bottle radiates heat to the outside. Since the heat inside the corundum porcelain bottle cannot be convected and dissipated, the heat dissipation effect of the damping resistor is poor. Further, poor heat dissipation may cause the resistance wire to exceed the rated operating temperature and burn out due to oxidation. Moreover, since the resistance wire is exposed to the external environment, the protection performance of the resistance wire is poor, which affects the service life of the damping resistor.

[0039] The embodiment of the utility model provides a kind of damping resistor, can solve the problems in the above related technical.

[0040] Please refer to Figure 1 And Figure 2 , Figure 1 It is the structure diagram of a kind of damping resistor 10 provided in the embodiment of the utility model, Figure 2 It is the series connection schematic diagram of a kind of resistance component 12 provided in the embodiment of the utility model, damping resistor 10 can include: end plate component 11, resistance component 12 and multiple heat pipes 13.End plate component 11 can include two insulating end plates 111 oppositely arranged, two insulating end plates 111 can be oppositely arranged along first direction E1, and the extension direction of the board face of two insulating end plates 111 can be parallel.

[0041] Resistance component 12 can include multiple series connection resistance structures 121, multiple resistance structures 121 can be located between two insulating end plates 111, and the length direction of any one resistance structure 121 can be parallel with the arrangement direction of two insulating end plates 111, that is, the length direction of resistance structure 121 can be perpendicular to the extension direction of the board face of insulating end plate 111.Both ends of any one resistance structure 121 are mounted on two insulating end plates 111 respectively, and multiple resistance structures 121 are spaced apart.Both ends of resistance structure 121 can be fixedly connected with two insulating end plates 111 respectively, so that multiple resistance structures 121 can be distributed according to preset interval distance, so that gap can exist between multiple resistance structures 121, and the heat dissipation effect of resistance component 12 can be improved.

[0042] Multiple heat pipes 13 can correspond to multiple resistance structures 121 one by one, heat pipe 13 is sleeved on the outside of corresponding resistance structure 121, and heat pipe 13 is used for radiating resistance structure 121.Heat pipe 13 can enclose and protect resistance structure 121, to ensure that the heat generated by resistance structure 121 can be smoothly radiated out, while reducing the influence of external environment on resistance structure 121.Exemplarily, heat pipe 13 can include quartz tube, which is processed by special process, can protect the heating element inside, and at the same time improve the radiation efficiency of infrared ray.

[0043] And, since multiple resistance structures 121 are spaced apart, multiple heat pipes 13 can also be spaced apart, which can avoid that the heat generated by multiple resistance structures 121 is concentrated in the central region of damping resistor 10, can improve the convective heat dissipation effect of resistance structure 121, so that the heat generated by resistance structure 121 can be promptly dissipated to external environment through various heat dissipation modes such as heat radiation and heat convection.

[0044] In conclusion, the utility model discloses an embodiment provides a kind of damping resistor 10 comprising end plate component 11, resistance component 12 and multiple radiators 13.Resistance component 12 includes multiple series resistance structures 121, by being set in the outside of resistance structure 121 with radiator 13, resistance structure 121 can be protected, to improve the protective property of damping resistor 10, the poor protective property of damping resistor 10 in the related art can be solved.Problem.And, since multiple resistance structures 121 are arranged at intervals, and radiator 13 can radiate resistance structure 121, the heat generated by resistance structure 121 can be dissipated to the outside environment in time through various heat dissipation methods such as heat radiation and heat convection, ensuring the heat dissipation performance of damping resistor 10.

[0045] In an alternative embodiment, any one resistance structure 121 is in strip shape, and multiple resistance structures 121 can be uniformly arranged around the arrangement direction of the two insulating end plates 111.In this way, the damping resistor 10 can have an internal hollow structure, which can further improve the convective heat dissipation effect of the damping resistor 10.And, the volume and occupied space of the resistance component 12 can be reduced, thereby reducing the volume of the damping resistor 10.

[0046] In an alternative embodiment, the resistance structure 121 includes a metal resistance wire, and the radiator 13 includes a milky white quartz tube or a light-transmitting quartz tube.The material of the metal resistance wire can include a resistance alloy material, for example, the metal resistance wire can include a nichrome wire, which has a high resistivity, good surface oxidation resistance and high temperature strength, and can work stably at high temperatures.The metal resistance wire can be arranged in a spiral or linear shape in the radiator 13.

[0047] The milky white quartz tube or the light-transmitting quartz tube can absorb almost all visible light and near-infrared light radiated from the metal resistance wire and convert them into far-infrared radiation, so that the heat radiation of the heat generated by the metal resistance wire has a long transmission distance, and the heat dissipation effect of the damping resistor can be improved.

[0048] In an alternative embodiment, the resistance structure 121 includes a carbon fiber resistance wire, and the radiator 13 includes a light-transmitting quartz tube.The carbon fiber resistance wire has good electrothermal conversion efficiency and far-infrared radiation performance, and can transfer heat in the form of far-infrared radiation and heat conduction, with a long heat radiation transmission distance, so that the heat can be quickly dissipated to the outside environment.

[0049] In addition, the service life of the carbon fiber resistance wire is usually long, and can reach 5000-8000 hours, and there is no oxidation and breakdown phenomenon in frequent start-up, shutdown and long-term continuous operation, and the performance is stable.

[0050] Please refer to Figure 3 ,Figure 4 and Figure 5 , Figure 3 is Figure 1 the left view of the damping resistor 10 shown in FIG. 1, Figure 4 is Figure 1 the right view of the damping resistor 10 shown in FIG. 2, Figure 5 is a structural schematic view of a resistor structure 121 and a heat dissipation pipe 13 provided by an embodiment of the present application, Figure 5 in which a dashed line is used to represent the structure in which the resistor structure 121 is located inside the heat dissipation pipe 13, in an alternative embodiment, the resistor assembly 12 can further include a plurality of first connecting pieces 122, and any one resistor structure 121 can include a resistor part 1211 and two connecting parts 1212.

[0051] The two connecting parts 1212 are respectively located at two ends of the resistor part 1211, the two connecting parts 1212 can be fixedly connected with the two ends of the resistor part 1211, and the two connecting parts 1212 are both electrically connected with the resistor part 1211. The heat dissipation pipe 13 can be sleeved outside the resistor part 1211 to protect the resistor part 1211, and the connecting part 1212 can be located outside the heat dissipation pipe 13 to facilitate the connection with other structures.

[0052] The plurality of first connecting pieces 122 are respectively located at two ends of the plurality of resistor structures 121, the two ends of the first connecting piece 122 are respectively electrically connected with the two connecting parts 1212 to connect the plurality of resistor structures 121 in series. The plurality of first connecting pieces 122 can include two groups of first connecting pieces, any one group of first connecting pieces can include at least one first connecting piece 122, and the two groups of first connecting pieces can be respectively located at two ends of the resistor assembly 12 in the first direction E1. For example, the resistor assembly 12 can include five resistor structures 121 and two groups of first connecting pieces, each group of first connecting pieces includes two first connecting pieces 122, and the two ends of each first connecting piece 122 are respectively connected with the connecting parts 1212 of the two resistor structures 121 to connect the plurality of resistor structures 121 in series.

[0053] Please refer to Figure 1 , Figure 3 and Figure 4In an alternative embodiment, the damping resistor 10 can further comprise two terminals 14, and the resistor assembly 12 can further comprise two second connecting pieces 123; the two terminals 14 are respectively mounted on the two insulating end plates 111; the two second connecting pieces 123 are respectively located at the two ends of the plurality of resistance structures 121, and any one of the second connecting pieces 123 is respectively electrically connected with the connecting portion 1212 and the terminal 14. When the plurality of resistance structures 121 are connected in series through the plurality of first connecting pieces 122, the plurality of resistance structures 121 have two resistance structures 121 located at the ends of the series circuit, and the two resistance structures 121 both have a connecting portion 1212 not connected with the first connecting piece 122. The connecting portion 1212 not connected with the first connecting piece 122 can be connected with one end of the second connecting piece 123 to electrically connect the resistor assembly 12 and the terminal 14.

[0054] In an alternative embodiment, the number of the plurality of resistance structures 121 is odd, so that the terminals 14 electrically connected with the two ends of the resistor assembly 12 can be respectively located outside the two insulating end plates 111. Since in a high-voltage environment, if the two terminals 14 are too close, when the voltage difference between the two terminals 14 is large enough, arc discharge can occur, which not only causes damage to the equipment, but also poses a safety threat to the operator. Therefore, locating the two terminals 14 at the two ends of the resistor assembly 12 can improve the safety of the damping resistor 10.

[0055] Please refer to Figure 1 and Figure 5 In an alternative embodiment, any one of the insulating end plates 111 can have a plurality of mounting holes, and any one of the connecting portions 1212 can have an annular limiting groove c1; the plurality of resistance structures 121 correspond one-to-one with the plurality of mounting holes, the connecting portion 1212 of the resistance structure 121 can be arranged in the corresponding mounting hole, and part of the insulating end plate 111 is clamped in the annular limiting groove c1. In this way, the resistance structure 121 can be fixed on the insulating end plate 111 through the cooperation of the annular limiting groove c1 and the mounting hole.

[0056] Please refer to Figure 1 and Figure 5In an alternative embodiment, the connecting portion 1212 can include a connecting screw b1 and two connecting bolts b2, both of which are sleeved on the connecting screw b1 and can form an annular limiting groove c1. The connecting screw b1 is arranged in the mounting hole of the insulating end plate 111, and the two connecting bolts b2 are located on both sides of the insulating end plate 111 and abut against the insulating end plate 111. By threadedly connecting the two connecting bolts b2 with the connecting screw b1, the screw and the insulating end plate 111 can be locked and connected. For example, the two connecting bolts b2 include a first bolt and a second bolt. During the assembly of the damping resistor 10, the first bolt can be first removed from the connecting screw b1, then the connecting screw b1 is arranged in the mounting hole of the insulating end plate 111, and then the first bolt is arranged on the connecting screw b1, so that the first bolt and the second bolt can clamp the insulating end plate 111, thereby fixing the connecting screw b1 and the insulating end plate 111, and further fixing the resistor structure 121 and the insulating end plate 111.

[0057] Please refer to Figure 1 and Figure 3 In an alternative embodiment, a plurality of first connecting pieces 122 can be respectively located on the outer sides of the two insulating end plates 111 and fixedly connected with the insulating end plates 111; and two second connecting pieces 123 can be respectively located on the outer sides of the two insulating end plates 111 and fixedly connected with the insulating end plates 111. The first connecting piece 122 is in a strip shape, and both ends of the first connecting piece 122 have connecting holes, the connecting screw b1 is arranged in the connecting holes, and the first connecting piece 122 abuts against the connecting bolt b2 and the insulating end plate 111, respectively. In this way, the first connecting piece 122 and the connecting screw b1 of the resistor structure 121 can be electrically connected through the connecting bolt b2, thereby connecting a plurality of resistor structures 121 in series through a plurality of first connecting pieces 122, and the first connecting piece 122 can also be fixed on the insulating end plate 111, thereby improving the stability of the first connecting piece 122.

[0058] In the embodiments of the present application, the connecting structure of the second connecting piece 123 is similar to that of the first connecting piece 122, and the connecting structure of the terminal post 14 and the insulating end plate 111 is similar to that of the resistor structure 121 and the insulating end plate 111, which will not be described herein.

[0059] Please refer to Figure 5 The heat dissipation pipe 13 can include a quartz pipe 131 and porcelain seats 132 located at both ends of the quartz pipe 131, and the porcelain seats 132 can be sleeved on the end portions of the quartz pipe 131 and the connecting screw b1, so as to ensure stable installation and use of the quartz pipe 131.

[0060] Please refer to Figure 3In an alternative embodiment, the insulating end plate 111 can be circular in shape, the terminal post 14 can be located in the middle region of the insulating end plate 111, and the plurality of resistance structures 121 can be uniformly arranged along the edges of the insulating end plate 111. In this way, the circuit connection structure of the damping resistor 10 can be simplified, heat dissipation is facilitated, and the strength of the insulating end plate 111 can be improved because there is no stress concentration region on the circular insulating end plate 111.

[0061] For example, the insulating end plate 111 can also be quadrangular, hexagonal, or of another shape. The insulating end plate 111 can comprise a mica plate or a corundum ceramic plate.

[0062] In summary, the damping resistor provided by the embodiments of the present application comprises an end plate assembly, a resistance assembly, and a plurality of heat dissipation pipes. The resistance assembly comprises a plurality of resistance structures connected in series. The heat dissipation pipes are sleeved on the outside of the resistance structures, thereby protecting the resistance structures and improving the protection of the damping resistor, and the problem of poor protection of the damping resistor in the related art can be solved. Moreover, because the resistance structures are arranged at intervals and the heat dissipation pipes can radiate heat from the resistance structures, the heat generated by the resistance structures can be dissipated to the external environment in a timely manner through various heat dissipation modes such as heat radiation and heat convection, and the heat dissipation performance of the damping resistor is ensured.

[0063] It should be noted that in the drawings, the dimensions of the regions can be exaggerated for the sake of clarity. It will be further understood that when a member is referred to as being "on" another member, it can be directly on the other member or intervening members can also be present. In addition, it will be understood that when a member is referred to as being "beneath" another member, it can be directly beneath the other member or one or more intervening members can also be present. In addition, it will be understood that when a member is referred to as being "between" two members, it can be the only member between the two members or one or more intervening members can also be present. Like reference numerals designate like elements throughout the specification.

[0064] In the present application, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.

[0065] The above description is merely optional embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A damped resistor, characterized by The damping resistor comprises: an end plate assembly comprising two oppositely arranged insulating end plates; a resistance assembly comprising a plurality of resistance structures connected in series, two ends of any one of the resistance structures being respectively mounted on the two insulating end plates, and the plurality of resistance structures being spaced apart; a plurality of heat dissipation pipes corresponding to the plurality of resistance structures, the heat dissipation pipes being sleeved on the outside of the corresponding resistance structures, and the heat dissipation pipes being used for radiating heat dissipation of the resistance structures.

2. The damped resistor of claim 1, wherein Any one of the resistance structures is in a strip shape, and the plurality of resistance structures are uniformly arranged in the arrangement direction of the two insulating end plates.

3. The damped resistor of claim 1, wherein, The resistance assembly further comprises a plurality of first connecting pieces, any one of the resistance structures comprising a resistance part and two connecting parts; The two connecting parts are respectively located at two ends of the resistance part, and the two connecting parts are both electrically connected with the resistance part; The plurality of first connecting pieces are respectively located at two ends of the plurality of resistance structures, and two ends of the first connecting piece are respectively electrically connected with two connecting parts to connect the plurality of resistance structures in series.

4. The damped resistor of claim 3, wherein The damping resistor further comprises two terminal posts, and the resistance assembly further comprises two second connecting pieces; The two terminal posts are respectively mounted on the two insulating end plates; The two second connecting pieces are respectively located at two ends of the plurality of resistance structures, and any one of the second connecting pieces is respectively electrically connected with the connecting part and the terminal post.

5. The damped resistor of claim 3, wherein Any one of the insulating end plates has a plurality of mounting holes, and any one of the connecting parts has an annular limiting groove; The plurality of resistance structures correspond to the plurality of mounting holes one by one, the connecting part of the resistance structure is sleeved in the corresponding mounting hole, and part of the insulating end plate is clamped in the annular limiting groove.

6. The damped resistor of claim 5, wherein, The connecting part comprises a connecting screw rod and two connecting bolts, the two connecting bolts are both sleeved on the connecting screw rod, and the two connecting bolts enclose the annular limiting groove; The connecting screw rod is sleeved in the mounting hole, and the two connecting bolts are respectively located at two sides of the insulating end plate and are both abutted with the insulating end plate.

7. The damped resistor of claim 6, wherein The first connecting piece is in a strip shape, and two ends of the first connecting piece both have connecting holes, the connecting screw rod is sleeved in the connecting hole, and the first connecting piece is respectively abutted with the connecting bolt and the insulating end plate.

8. The damped resistor of any one of claims 1 to 7, wherein, The resistance structure comprises a metal resistance wire, and the heat dissipation pipe comprises a milky white quartz pipe or a light-transmitting quartz pipe.

9. The damped resistor of any one of claims 1 to 7, wherein, The resistance structure comprises a carbon fiber resistance wire, and the heat dissipation pipe comprises a light-transmitting quartz pipe.

10. The damped resistor of claim 4, wherein, The insulating end plate is in a circular shape, the terminal post is located in the middle region of the insulating end plate, and the plurality of resistance structures are uniformly arranged along the edge of the insulating end plate.

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