Combination switch

Abstract

According to the combination switch, the fuses are installed in the fuse shell to form the fuse group, the fuses are connected in parallel and are integrated with the isolation switch, the size of the combination switch is reduced, and therefore the size of a cabinet body where the combination switch is installed is reduced; the fuse is installed in the shell through the conductor assembly by means of the screw quick-change structure, and after the fuse is subjected to breaking protection or during conventional maintenance, quick disassembly and replacement of the fuse can be achieved. The fuse and the disconnecting switch are integrally arranged, so that the type test verification of the disconnecting switch fuse group can be integrally carried out, and the reliability of the product is improved. And meanwhile, the fuse group can be arranged at the wire inlet end or the wire outlet end of the isolating switch according to the use requirement, or the wire inlet end and the wire outlet end can be configured, so that the reliability of the combined switch in a power utilization system is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of switches, and specifically relates to a combination switch. Background Art

[0002] The word switch means opening and closing. It refers to a component that can open a circuit, interrupt the current or make it flow to another circuit. The most common switch is an electromechanical device operated by humans, which has one or more contacts. The "closed" contact means that the contact is conducting and allows current to flow; the "open" switch means that the contact is not conducting and forms an open circuit, and does not allow current to flow. The development history of switches has evolved from the original knife switch that requires manual operation to the current intelligent switch used in various large-scale electrical control equipment. The functions of switches are increasing and the safety is also increasing.

[0003] With the development of DC power systems such as photovoltaics, energy storage, rail transit, and data centers, the application of switches in DC systems has become more and more widespread. In order to improve the operating voltage and breaking capacity of switches in DC power systems, in the prior art, the existing isolating switches and fuses commonly used in AC power systems are usually used together to control the switch function of the DC power system. Isolating switches and fuses are important components of power systems. In existing scenarios, fuses and isolating switches are arranged separately, and the fuses and isolating switches are connected in series at one or more levels to break short-circuit currents, which poses certain risks in use. When a short-circuit fault current occurs, after the fuse breaks the protection system line, it is difficult to replace and maintain the fuse. Utility Model Content

[0004] The purpose of the utility model is to provide a combination switch in view of the defects of the above-mentioned existing isolating switch and fuse combination, such as large size, difficulty in replacing and maintaining the fuse, and low reliability. After connecting multiple fuses in parallel, they are electrically connected to the isolating switch to form an integrated arrangement, which reduces the size of the combination switch and facilitates the replacement and maintenance of the fuse.

[0005] Technical Solution

[0006] In order to achieve the above technical purpose, the utility model provides a combination switch, which includes an isolating switch and a fuse group, characterized in that: the fuse group is arranged side by side on one side or both sides of the isolating switch;

[0007] The fuse group includes at least two fuses, and the at least two fuses are arranged side by side front to back or side by side left to right on one side or both sides of the disconnector;

[0008] The at least two fuses are connected in parallel, and the at least two fuses connected in parallel are connected in series with the wiring bank on the corresponding side of the isolating switch.

[0009] In one embodiment, any one of the at least two fuses comprises a fuse body, a base, a wiring conductor, a connecting conductor 1 and a mask, and the wiring conductor and the connecting conductor 1 are fixed to the base by screws.

[0010] In one embodiment, the mask is made of transparent insulating material.

[0011] In one embodiment, the mask is made of PC material.

[0012] In one embodiment, the mask is provided with heat dissipation holes.

[0013] In one embodiment, when the at least two fuses are arranged side by side front to back, the at least two fuses are connected in parallel via a second connecting conductor group at the top.

[0014] In one of the embodiments, when the at least two fuses are arranged side by side, the at least two fuses are connected in parallel via three connecting conductor groups at the rear side.

[0015] In one embodiment, the isolating switch and the fuse group are fixedly installed together via a base plate.

[0016] In one embodiment, the isolating switch is an isolating switch with at least 2 poles.

[0017] Beneficial Effects

[0018] The utility model provides a combination switch, in which a fuse is installed in a fuse housing to form a fuse group. A plurality of fuses are arranged in parallel and integrated with an isolating switch, which reduces the volume of the combination switch, thereby reducing the volume of the cabinet in which the combination switch is installed; the fuse is installed in the housing through a conductor assembly using a screw quick-change structure, and the fuse can be quickly disassembled and replaced after the fuse is disconnected for protection or during routine maintenance. The fuse is arranged in an integrated manner with the isolating switch, and the type test verification of the isolating switch fuse group can be performed as a whole, thereby improving the reliability of the product. At the same time, the fuse group can be installed at the incoming or outgoing end of the isolating switch according to the use requirements, or it can be configured at both the incoming and outgoing ends, thereby further improving the reliability of the combination switch in the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Attached Figure 1 It is a schematic diagram of the structure of the combination switch in Example 1 of the utility model.

[0021] Attached Figure 2 It is a schematic diagram of the fuse structure in Example 1 of the utility model.

[0022] Attached Figure 3 It is a schematic diagram of the structure of the combination switch in Example 2 of the utility model.

[0023] Attached Figure 4 It is a schematic diagram of the structure of the combination switch in Example 3 of the utility model.

[0024] Attached Figure 5 It is a schematic diagram of the structure of the combination switch in Example 4 of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0030] Example 1

[0031] The existing switch used in combination of isolating switch and fuse is large in size, difficult to replace and maintain the fuse, and has low reliability. In order to solve this problem, the present embodiment provides a combination switch, which includes an isolating switch a and a fuse group b, and the isolating switch a and the fuse group b are fixedly installed together through a base plate c. The isolating switch a is an isolating switch with at least 2 poles. The fuse group b is arranged side by side on one side or both sides of the isolating switch a; specifically, the fuse group b includes at least two fuses b01, and the at least two fuses b01 are arranged side by side front and back or side by side left and right on one side or both sides of the isolating switch a; the at least two fuses b01 are connected in parallel, and the at least two fuses b01 connected in parallel are connected in series with the terminal block a01 on the corresponding side of the isolating switch a.

[0032] As attached Figure 2 As shown, any one of the at least two fuses b01 includes a fuse body b0101, a base b0102, a wiring conductor b0103, a connecting conductor one b0104 and a mask b0105, wherein the wiring conductor b0103 and the connecting conductor one b0104 are fixed to the base b0102 by screws b0106. The mask b0105 is made of a transparent insulating material. In this embodiment, the mask b0105 is made of a PC material. The mask b0105 is provided with heat dissipation holes b0105a.

[0033] The following is a detailed description of the situation where two fuses b01 are arranged side by side on one side of the isolating switch a in conjunction with the accompanying drawings: Figure 1 As shown, when the two fuses b01 are arranged side by side, the two fuses b01 are connected in parallel through the top connecting conductor group 2 b02. After the two fuses b01 are connected in parallel through the top connecting conductor group 2 b02, they are then connected in series with the terminal block a01 on the rear side of the corresponding isolating switch a through the connecting conductor group 4 b04. The connecting conductor group 2 b02 and the connecting conductor group 4 b04 are a whole or a conductor assembly formed by connecting several conductors according to the positions of the fuses and the isolating switches. In this embodiment, the connecting conductor group 2 b02 is composed of two back-to-back L-shaped conductors, and the connecting conductor group 4 b04 is composed of a straight conductor and a Z-shaped conductor.

[0034] Example 2

[0035] In this embodiment, as shown in the attached Figure 3 As shown, two fuses b01 connected in parallel are arranged on the left and right sides of the isolating switch, and the two fuses b01 connected in parallel are connected in parallel through the top connection conductor group 2 b02, and then connected in series with the terminal block a01 on the rear side of the isolating switch a on the corresponding side through the connection conductor group 4 b04. The other structures are the same as those in Example 1.

[0036] Example 3

[0037] In this embodiment, as shown in the attached Figure 4 As shown, the two fuses b01 are arranged side by side on one side of the isolating switch a. The two fuses b01 arranged side by side on the left and right are connected in parallel through the connecting conductor group three b03 on the rear side, and then connected in series with the terminal block a01 on the rear side of the isolating switch a on the corresponding side through the connecting conductor group five b05. The connecting conductor group three b03 and the connecting conductor group five b05 are a whole or a conductor assembly formed by connecting several conductors according to the positions of the fuses and the isolating switch. In this embodiment, the connecting conductor group three b03 is composed of two short straight conductors and one long straight conductor, and the connecting conductor group five b05 is a Z-shaped conductor. The other structures are the same as those in Example 1.

[0038] Example 4

[0039] In this embodiment, as shown in the attached Figure 5 As shown, the two fuses b01 are arranged side by side on the left and right sides of the isolating switch a, and the two fuses b01 arranged side by side on each side are connected in parallel through the connecting conductor group three b03 on the rear side, and then connected in series with the terminal block a01 on the rear side of the isolating switch a on the corresponding side through the connecting conductor group five b05. The other structures are the same as those in Example 3.

[0040] The utility model provides a combination switch, in which a fuse is installed in a fuse housing to form a fuse group. A plurality of fuses are arranged in parallel and integrated with an isolating switch, which reduces the volume of the combination switch, thereby reducing the volume of the cabinet in which the combination switch is installed; the fuse is installed in the housing through a conductor assembly using a screw quick-change structure, and the fuse can be quickly disassembled and replaced after the fuse is disconnected for protection or during routine maintenance. The fuse is arranged in an integrated manner with the isolating switch, and the type test verification of the isolating switch fuse group can be performed as a whole, thereby improving the reliability of the product. At the same time, the fuse group can be installed at the incoming or outgoing end of the isolating switch according to the use requirements, or it can be configured at both the incoming and outgoing ends, thereby further improving the reliability of the combination switch in the power system.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A combination switch, comprising an isolating switch (a) and a fuse group (b), characterized in that: The fuse group (b) is arranged side by side on one side or both sides of the disconnector (a); The fuse group (b) comprises at least two fuses (b01), and the at least two fuses (b01) are arranged side by side front to back or side by side left to right on one side or both sides of the disconnector (a); The at least two fuses (b01) are connected in parallel, and the at least two fuses (b01) connected in parallel are connected in series with the wiring bank (a01) on the corresponding side of the isolating switch (a).

2. A combination switch according to claim 1, characterized in that: Any one of the at least two fuses (b01) comprises a fuse body (b0101), a base (b0102), a wiring conductor (b0103), a connecting conductor one (b0104) and a mask (b0105); the wiring conductor (b0103) and the connecting conductor one (b0104) are fixed to the base (b0102) by screws (b0106).

3. A combination switch according to claim 2, characterized in that: The mask (b0105) is made of transparent insulating material.

4. A combination switch according to claim 3, characterized in that: The mask (b0105) is made of PC material.

5. A combination switch according to claim 4, characterized in that: The mask (b0105) is provided with heat dissipation holes (b0105a).

6. A combination switch according to claim 1, characterized in that: When the at least two fuses (b01) are arranged side by side front to back, the at least two fuses (b01) are connected in parallel via the second connecting conductor group (b02) at the top.

7. A combination switch according to claim 1, characterized in that: When the at least two fuses (b01) are arranged side by side, the at least two fuses (b01) are connected in parallel via the rear connecting conductor group three (b03).

8. A combination switch according to claim 1, characterized in that: The isolating switch (a) and the fuse group (b) are fixedly installed together via a base plate (c).

9. A combination switch according to claim 1, characterized in that: The isolating switch (a) is an isolating switch with at least two poles.

Images