Resistor

Abstract

The utility model belongs to the field of resistors, and particularly relates to a resistor. The resistor mainly solves the problems that when a conventional large-creepage-distance post insulator is selected for segmented supporting isolation of an existing resistor, the height of the post insulator is usually high, and when the resistor is assembled, the overall height of the resistor is invisibly increased by the high post insulator, so that the size of the resistor is enlarged, a resistor shell is correspondingly enlarged, and the cost is low. The overall occupied space of the resistor is increased; or specially designed post insulators with low rated voltage and large creepage distance are selected, and the problem that the cost of the resistor is sharply increased is determined due to the particularity of the post insulators. The resistor comprises N resistor units, 2N connecting side plates, N-1 supporting insulating units and 2N insulating connecting pieces, and the vertical height of the connecting side plate is smaller than that of the resistor unit. According to the utility model, the overall height of the resistor can be reduced, and the creepage distance between resistor ends is large.

Description

Technical Field

[0001] The utility model relates to a resistor. Background Art

[0002] Resistors are widely used in various fields such as power transmission and distribution filtering, flexible DC starting current limiting, electric transmission loads, AC and DC drives, pulse power supplies, induction heating, pulse networks, lasers, etc.

[0003] Under the condition that the rated voltage and resistance value of the resistor remain unchanged, the greater the voltage and creepage ratio in the creepage distance calculation between the resistor ends, the greater the creepage distance between the resistor ends, which leads to a continuous increase in the volume requirements of the resistor.

[0004] In view of the above working conditions, technicians currently use post insulators that can meet both the rated voltage requirements and the creepage distance requirements for segmented support isolation. Usually, the rated voltage between the resistor ends is small but the creepage distance is large. When conventional large creepage distance post insulators are used for segmented support isolation, the height of the post insulator is usually high. When the resistor is assembled, the high post insulators invisibly increase the overall height of the resistor, making the resistor larger, the resistor housing larger accordingly, and the overall space occupied by the resistor larger. If a specially designed post insulator with a low rated voltage and a large creepage distance is selected, the cost of the resistor will increase sharply due to the particularity of the insulator. In summary, the increase in the area occupied by the resistor or the sharp increase in cost will not only limit the scope of use of the resistor, but also make it difficult to adapt to the rapid development of the industry.

[0005] Therefore, there is an urgent need to provide a new resistor structure that does not increase the occupied space of the resistor and does not significantly increase the cost of the resistor. Utility Model Content

[0006] The purpose of the utility model is to solve the technical problem that when conventional large creepage distance post insulators are used for segmented support and isolation of existing resistors, the height of the post insulators is usually relatively high. When the resistor is assembled, the high post insulators virtually increase the overall height of the resistor, making the resistor volume larger, the resistor housing correspondingly larger, and the overall space occupied by the resistor larger; or, when specially designed post insulators with low rated voltage and large creepage distance are used, the particularity of the post insulators determines that the cost of the resistor increases sharply, and a resistor is provided.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A resistor that is special in that:

[0009] It includes N resistor units, 2N connecting side plates, N-1 supporting insulating units and 2N insulating connectors; N≥2;

[0010] The N resistance units are arranged in sequence in the vertical direction, and a first interval is provided between two adjacent resistance units;

[0011] The vertical height of the connecting side plate is less than the vertical height of the resistance unit;

[0012] The 2N connecting side plates are arranged in pairs, and a second interval is provided in the horizontal direction between the connecting side plates in the same pair; the N resistance units are respectively arranged in the second intervals of the N groups of connecting side plates and are correspondingly connected to the upper sides of the N groups of connecting side plates;

[0013] The N - 1 support insulating units are respectively arranged between two adjacent groups of connecting side plates and are respectively connected to the connecting side plates on their upper and lower sides;

[0014] The 2N insulating connectors are respectively connected to one ends of the 2N connecting side plates and are located on the same side of the 2N connecting side plates; two conductive members are respectively connected to both sides of the same end of the N resistance units;

[0015] Define the two conductive members corresponding to the top - most resistance unit as the first - layer conductive assembly, the two conductive members corresponding to the bottom - most resistance unit as the N - layer conductive assembly, and the two conductive members corresponding to the remaining resistance units as the second - layer conductive assembly, …, the (N - 1) - layer conductive assembly from top to bottom in sequence;

[0016] One of the conductive members in the first - layer conductive assembly is an incoming - line end for accessing external current, and one of the conductive members in the N - layer conductive assembly is an outgoing - line end for leading the current out to the external; between one of the conductive members in the first - layer conductive assembly and one of the conductive members on the same side in the second - layer conductive assembly, between one of the conductive members in the second - layer conductive assembly and one of the conductive members on the same side in the third - layer conductive assembly, …, between one of the conductive members in the (N - 1) - layer conductive assembly and one of the conductive members on the same side in the N - layer conductive assembly are respectively connected by a conductive connecting member, and the connection ends of all the conductive members and the conductive connecting members are respectively fixed to the outer ends of a corresponding insulating connector.

[0017] Further, each connecting side plate includes two first connecting plates, a bottom plate, two L - shaped plates and a second connecting plate;

[0018] The two first connecting plates are arranged oppositely along the length direction of the resistance unit, the two ends of the bottom plate are respectively connected to the lower ends of the two first connecting plates, one ends of the long plates of the two L - shaped plates are respectively connected to the upper ends of the two first connecting plates, an installation interval adapted to the second connecting plate is provided between the short plates of the two L - shaped plates, and the second connecting plate is arranged in the installation interval and is respectively connected to the sides of the short plates of the two L - shaped plates close to the resistance unit;

[0019] The resistance unit is connected to the corresponding second connecting plate through a fixing connecting member;

[0020] The N - 1 support insulation units are respectively connected to the bottom plates of the connecting side plates on their upper and lower sides and the long plates of the L - shaped plates.

[0021] The 2N insulating connectors are respectively connected to the outer side walls of one first connecting plate on the same side among the 2N connecting side plates.

[0022] Furthermore, the outer side walls of the other first connecting plates in the same group of two connecting side plates are connected by a reinforcement connector.

[0023] Furthermore, the N resistance units have the same structure and each includes a plurality of resistor sheets arranged in series or in parallel.

[0024] The plurality of resistor sheets in the N resistance units are respectively arranged in the second intervals of the N groups of connecting side plates.

[0025] Two conductive parts in the first - layer conductive assembly, the second - layer conductive assembly, …, the (N - 1) - th layer conductive assembly, and the N - th layer conductive assembly are respectively electrically connected to the corresponding resistor sheets.

[0026] Furthermore, the support insulation unit includes four support insulators, and the upper and lower ends of the four support insulators are respectively connected to the two ends of the adjacent sides of the two adjacent connecting side plates that are close to each other.

[0027] Furthermore, the material of the support insulator is electro - porcelain or epoxy resin or composite material.

[0028] The beneficial effects of the present utility model are as follows:

[0029] Each resistance unit of the present utility model adopts an s - shaped series connection method. The connection side plates are used to install each resistance unit, and the vertical height of the connection side plates is lower than the vertical height of the resistance units. This not only reduces the overall height of the resistor, but also increases the creepage distance between the ends of the resistor. The selected post insulators are conventional, general - purpose, and highly standardized, enabling the resistor to be suitable for indoor and outdoor environments with various complex large - creepage - distance requirements, ensuring the safe and reliable operation of the product. At the same time, it has a small volume, low production cost, and short delivery cycle. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0031] In the figure: 1 - resistance unit, 2 - connecting side plate, 21 - first connecting plate, 22 - bottom plate, 23 - L - shaped plate, 24 - second connecting plate, 25 - fixing connector, 26 - reinforcement connector; 3 - support insulation unit, 4 - insulating connector, 5 - conductive part, 6 - conductive connector. Detailed Embodiments

[0032] To make the objectives, advantages and features of the present utility model clearer, the following further elaborates on a resistor proposed by the present utility model in conjunction with the accompanying drawings and specific embodiments. According to the following specific implementation manners, the advantages and features of the present utility model will be clearer.

[0033] See Figure 1 , a resistor in this embodiment includes N resistor units 1, 2N connecting side plates 2, N - 1 support insulating units 3, and 2N insulating connectors 4; N≥2.

[0034] Among them, the specific number of resistor units 1 can be specifically set according to actual needs. In this embodiment, N = 3 is taken as an example for illustration.

[0035] The 3 resistor units 1 are arranged in sequence in the vertical direction, and a first interval is provided between two adjacent resistor units 1.

[0036] Specifically, the 3 resistor units 1 have the same structure and each includes a plurality of resistor chips; the plurality of resistor chips are arranged in series or in parallel. The number of resistor chips and the connection manner between the resistor chips can both be set according to actual needs. In this embodiment, six resistor chips connected in series are taken as an example for illustration.

[0037] The vertical height of the connecting side plate 2 is less than the vertical height of the resistor unit 1; the six connecting side plates 2 are arranged in pairs, and a second interval is provided in the horizontal direction between the connecting side plates 2 in the same pair; the three resistor units 1 are respectively arranged in the second intervals of the three groups of connecting side plates 2 and are correspondingly connected to the upper sides of the three groups of connecting side plates 2.

[0038] Specifically, the connecting side plate 2 includes two first connecting plates 21, a bottom plate 22, two L-shaped plates 23, and a second connecting plate 24; the two first connecting plates 21 are arranged opposite to each other along the length direction of the resistor unit 1, both ends of the bottom plate 22 are connected to the lower ends of the two first connecting plates 21 respectively, the long plate ends of the two L-shaped plates 23 are respectively connected to the upper ends of the two first connecting plates 21, an installation interval adapted to the second connecting plate 24 is provided between the short plates of the two L-shaped plates 23, the second connecting plate 24 is arranged in the installation interval and is respectively connected to the sides of the short plates of the two L-shaped plates 23 close to the resistor unit 1; the outer side walls of the other first connecting plates 21 in the same pair of two connecting side plates 2 are connected through a reinforcement connector 26; the outermost resistor chip in the resistor unit 1 is connected to the corresponding second connecting plate 24 through a fixing connector 25.

[0039] Specifically, the support insulating unit 2 includes four support insulators, and the upper and lower ends of the four support insulators are respectively connected to the bottom plate 22 and the long plates of the L-shaped plates 23 in the connecting side plates 2 on their respective upper and lower sides.

[0040] Specifically, the support insulators with large creepage distance in this embodiment are conventional standard model electrical components. The pollution level is designed according to Class IV, and the material is porcelain, epoxy resin or composite material, which is used to segmentally support and isolate the resistor units 1 corresponding to each group of connecting side plates 2. The selected support insulators are conventional, general-purpose and highly standardized, enabling the resistor to adapt to various complex environmental conditions with large creepage distance requirements indoors and outdoors, ensuring the safe and reliable operation of the product. At the same time, they have a small volume, low production cost and short delivery cycle.

[0041] Six of the insulating connectors 4 are respectively connected to the outer side wall of a first connecting plate 21 among the six connecting side plates 2, and the material of the insulating connector 3 is porcelain, epoxy resin or composite material.

[0042] 2N of the insulating connectors 4 are respectively connected to one end of 2N connecting side plates 2, and 2N of the insulating connectors 4 are respectively and correspondingly connected to the outsides of the outermost resistor plates among the N resistor units 1 through a conductive member 5.

[0043] For the convenience of description, in this embodiment, it is defined that the two conductive members 5 corresponding to the uppermost resistor unit 1 are the first-layer conductive components, the two conductive members 5 corresponding to the lowermost resistor unit 1 are the third-layer conductive members, and the two conductive members 5 corresponding to the resistor units 1 in the middle are the second-layer conductive components.

[0044] One of the conductive members 5 in the first-layer conductive component is the incoming line end, through which an external electrical appliance is connected to facilitate the access of external current. One of the conductive members 5 in the third-layer conductive component is the outgoing line end, through which the current is facilitated to be led out to the outside; between the other conductive member 5 in the first-layer conductive component and the same-side conductive member 5 in the second-layer conductive component, and between the other conductive member 5 in the second-layer conductive component and the same-side conductive member 5 in the third-layer conductive component, they are respectively connected through a conductive connecting member 6, and the connection ends of all the conductive members 5 and the conductive connecting members 6 are respectively fixed to the outer ends of a corresponding insulating connector 4.

[0045] The materials of the conductive member 5 and the conductive connecting member 6 are the same as that of the resistor plate, and their current-carrying cross-sectional areas are not less than twice the current-carrying cross-sectional area of the resistor plate.

[0046] The connection method of the above three resistor units is only one embodiment of the present invention. In other embodiments of the present invention, if more resistor units 1 are needed, the required resistor units 1 can be connected according to the above connection method.

Claims

1. A resistor, characterized in that: It comprises N resistor units (1), 2N connecting side plates (2), N-1 supporting insulating units (3) and 2N insulating connectors (4); N≥2; The N resistor units (1) are arranged in sequence along the vertical direction, and a first interval is provided between two adjacent resistor units (1); The vertical height of the connecting side plate (2) is smaller than the vertical height of the resistance unit (1); 2N connecting side plates (2) are arranged in groups of two, and a second interval is arranged between the connecting side plates (2) in the same group in the horizontal direction; N resistor units (1) are respectively arranged in the second intervals of the N groups of connecting side plates (2) and are correspondingly connected to the upper sides of the N groups of connecting side plates (2); N-1 of the supporting insulating units (3) are respectively arranged between two adjacent groups of connecting side plates (2), and are respectively connected to the connecting side plates (2) on the upper and lower sides thereof; 2N insulating connectors (4) are respectively connected to one end of the 2N connecting side plates (2) and are located on the same side of the 2N connecting side plates (2); and a conductive member (5) is respectively connected to both sides of the same end of the N resistor units (1); The two conductive elements (5) corresponding to the topmost layer of resistance units (1) are defined as the first layer of conductive components, the two conductive elements (5) corresponding to the bottommost layer of resistance units (1) are defined as the Nth layer of conductive components, and the two conductive elements (5) corresponding to the remaining resistance units (1) are defined as the second layer of conductive components, ..., the N-1th layer of conductive components from top to bottom; One of the conductive components (5) in the first layer of conductive components is an inlet terminal for receiving external current, and one of the conductive components (5) in the Nth layer of conductive components is an outlet terminal for leading current to the outside; Another conductive member (5) in the first conductive component layer and a conductive member (5) on the same side in the second conductive component layer, another conductive member (5) in the second conductive component layer and a conductive member (5) on the same side in the third conductive component layer, ..., another conductive member (5) in the N-1 conductive component layer and a conductive member (5) on the same side in the N conductive component layer are respectively connected via a conductive connector (6), and the connection ends of all conductive members (5) and conductive connectors (6) are respectively fixed to the outer end of a corresponding insulating connector (4).

2. A resistor according to claim 1, characterized in that: Each of the connecting side plates (2) comprises two first connecting plates (21), a bottom plate (22), two L-shaped plates (23) and a second connecting plate (24); Two first connecting plates (21) are arranged opposite to each other along the length direction of the resistor unit (1); two ends of the bottom plate (22) are respectively connected to the lower ends of the two first connecting plates (21); one end of the long plate of the two L-shaped plates (23) is respectively connected to the upper ends of the two first connecting plates (21); an installation interval matched with the second connecting plate (24) is arranged between the short plates of the two L-shaped plates (23); the second connecting plate (24) is arranged in the installation interval and is respectively connected to one side of the short plates of the two L-shaped plates (23) close to the resistor unit (1); The resistance unit (1) is connected to the corresponding second connection plate (24) via a fixed connection member (25); N-1 of the supporting insulating units (3) are respectively connected to the long plates of the bottom plate (22) and the L-shaped plate (23) connecting the side plates (2) at the upper and lower sides thereof; The 2N insulating connectors (4) are respectively connected to the outer side wall of a first connecting plate (21) located on the same side among the 2N connecting side plates (2).

3. A resistor according to claim 2, characterized in that: The outer side walls of another first connecting plate (21) in the same group of two connecting side plates (2) are connected via a reinforcing connecting piece (26).

4. A resistor according to any one of claims 1 to 3, characterized in that: The N resistor units (1) have the same structure and each comprises a plurality of resistor sheets connected in series or in parallel; The plurality of resistor sheets in the N resistor units (1) are respectively arranged in the second intervals of the N groups of connecting side plates (2); The first layer of conductive components, the second layer of conductive components, ..., the N-1th layer of conductive components, and the two conductive components (5) in the Nth layer of conductive components are electrically connected to corresponding resistor sheets respectively.

5. A resistor according to claim 1, characterized in that: The supporting insulating unit (3) comprises four supporting insulators, and the upper and lower ends of the four supporting insulators are respectively connected to the two ends of the sides of two adjacent connecting side plates (2) that are close to each other.

6. A resistor according to claim 5, characterized in that: The support insulator is made of electric porcelain, epoxy resin or composite material.

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