CN206558423U - A kind of bar shaped fuse disconnecting switch - Google Patents

Abstract

The utility model discloses a kind of bar shaped fuse disconnecting switch, including switch case, operation handle, contact system and external terminal component, the operation handle drives fuse and static contact in the contact system to be opened or closed, the bottom correspondence static contact of the switch case is provided with some current transformers, the conductor for connecting the static contact is equipped with the central cavity of the current transformer, also include the multifunctional meter being arranged on by mounting structure on switch case one end, with the output port module for being capable of multifunctional meter data described in remote transmission, there are some connectivity ports electrically connected with current transformer and voltage end on the multifunctional meter.This structure setting, can realize remote transmission with the change of electrical parameter in writing circuit, enrich product function, lift performance, develop to high-endization line of products, expand the scope of application, improve the market competitiveness, meet the demand of relative users.

Description

A strip fuse type isolating switch

technical field

The utility model relates to the technical field of electrical switches, in particular to a strip fuse type isolating switch.

Background technique

Bar disconnectors are usually used with fuses and are used in places with high rated currents. They have two functions of "load breaking" and "isolation", and fuses can be added to each pole for "overload and short circuit protection". Make full use of the protection characteristic curve of the fuse to realize the protection of the equipment in the cable and line, and provide an obvious disconnection point during maintenance to ensure the personal safety of the staff, and can expand the switching equipment of other intelligent systems. When used for strip isolating switches, it is generally used to insert fuses and connect them to the circuit to protect the safety of the entire circuit.

The commonly used strip isolating switch in the market is mainly composed of a base, a cover, a handle and an arc extinguishing cover. ability to increase contact life. However, the commonly used bar switches on the market currently have common functions, and generally only function as line switches and line fuse protection. They have no other special functions, and the competition is homogenized. Current supply detection instruments, protection devices, etc. are connected and used, and the power parameters in the circuit system cannot be effectively detected. There is no remote output, and the use function is single, especially in high-end line places with high requirements for intelligence. Real-time monitoring of line data , The traditional strip isolating switch cannot meet the design requirements for use as a high-end route site, so it cannot meet the needs of mid-to-high-end users, and the market is limited.

Utility model content

Therefore, the technical problem to be solved by the utility model is to overcome the bar-shaped isolating switch in the prior art without functions such as detecting power parameters, using a single function, limited scope of application, unable to meet the needs of middle and high-end users, and a technology with large market limitations. defect.

Therefore, in order to solve the above technical problems, the utility model provides a strip fuse type isolating switch, including a switch housing, and an operating handle, a contact system and an external terminal assembly arranged in the switch housing. The handle drives the fuse and the static contact in the contact system to open or close, the external terminal assembly is connected to the static contact, and the fuses are correspondingly arranged in several phases formed by the switch housing. In the spaced accommodating space, the bottom of the switch housing is provided with a number of current transformers corresponding to the fixed contacts, and the middle cavity of the current transformers is pierced with conductors connected to the fixed contacts. It includes a multi-function meter installed on one end of the switch housing through a mounting structure, and an output port module capable of remotely transmitting the data of the multi-function meter, and the multi-function meter has a Several connection ports electrically connected to the voltage terminals on the housing.

As a preferred solution, the terminal of the current transformer is connected with a ring terminal, and the voltage terminal is provided with a voltage detection hole, and the ring terminal and the voltage detection hole are respectively connected to the connection port through a wire .

As a preferred solution, the conductor has a first connection end and a second connection end located at both axial ends of the current transformer, the first connection end is fixedly connected to the static contact, and the second connection end The end is fixedly connected with the incoming board.

As a preferred solution, two horizontally extending flanges are formed on both sides of the current transformer, and connection holes are formed on the two flanges, and the two flanges pass through the connection holes through screws Finally, it is fixed on the side edges on both sides of the bottom of the switch housing.

As a preferred solution, the installation structure includes: a hanging table arranged on one end of the switch housing, and a mounting frame detachably fixed on the hanging table of the switch housing; the multi-function meter and the output port The module is fixedly arranged on the mounting frame, and the mounting frame is provided with a heat shield between the multi-function meter and one end of the switch housing.

As a preferred solution, the installation structure further includes an undercut structure arranged on one end of the installation frame, and a card slot formed on the hanging platform capable of engaging with the undercut structure.

As a preferred solution, the undercut structure is a wedge-shaped protrusion arranged obliquely downward.

As a preferred solution, the bottom side of the switch housing is formed with wire grooves that can accommodate wires, and several sets of wire clamping plates are fixed on the wire grooves, and the wire pressure plates are formed with wire grooves suitable for wires to pass through. extended through hole.

As a preferred solution, the switch housing includes three operating units with the fuse and the static contact, the operating handle is installed in cooperation with the three operating units, and can synchronously drive the three operating units The unit performs opening and closing actions.

As a preferred solution, the external terminal assembly is composed of three outlet plates, one end of the three outlet plates is respectively fixedly connected to the static contacts in the operation unit, and the other end is provided with a wiring for external cables. Terminals, the connecting terminals are located on the open end of the switch housing.

The technical scheme of the utility model has the following advantages:

1. In the strip fuse type isolating switch provided by the utility model, a plurality of current transformers are arranged at the bottom of the switch housing, and a multi-function meter and an output are installed on one end of the switch housing through the installation structure. Port module, in which the multi-function meter is electrically connected with the current transformer to provide it with the current required for its work. This structural setting, on the one hand, can effectively record the changes in the electrical parameters of the isolating switch and the circuit with the help of the multi-function meter. It is safe and reliable to identify the voltage and current of each phase of the isolating switch and record the corresponding loss of voltage and current. It is safe and reliable, and can realize remote transmission by connecting the output port module. It is not limited by time and space and improves the performance. On the other hand With the help of the current transformer, the voltage coil or current coil of the measuring instrument and the protection device can be powered, which improves the guarantee basis for increasing the use function of the isolating switch. Therefore, the utility model adds a current transformer and a multi-function meter to the isolating switch, which enriches the product functions and can also be used for remote output. It can be applied to intelligent high-end places, develop toward high-end product routes, and expand the scope of application , improve market competitiveness and meet the needs of corresponding users.

2. In the strip fuse type isolating switch provided by the utility model, the installation structure includes a detachable connection and cooperation formed by the hanging platform on one end of the switch housing and the installation frame, mainly through the inversion on the installation frame. The snap fit formed by the buckle structure and the card slot of the hanging table keeps the mounting frame and the switch housing in a horizontal fixed connection, and provides fixed support for the multi-function meter and the output port module. Easy disassembly for easy maintenance.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can obtain other drawings according to these drawings without any creative work.

Fig. 1 is a schematic diagram of the elevation structure of the bottom direction of a strip fuse type isolating switch provided by the utility model;

Fig. 2 is a partially enlarged structural schematic diagram shown in Fig. 1, particularly showing voltage terminals and a pressure plate;

Fig. 3 is the structural representation of the hanging table in the installation structure of the present utility model;

Fig. 4 is a structural schematic diagram of the installation structure in the installation structure of the present invention, especially showing the undercut structure;

Fig. 5 is a schematic diagram of the internal structure of Fig. 1 after hiding part of the switch housing, especially showing the external terminal assembly;

Fig. 6 is a schematic cross-sectional structure diagram of the strip fuse type isolating switch provided by the utility model;

Fig. 7 is a schematic diagram of the bottom structure of the switch housing of the utility model, especially showing the wire inlet plate;

Explanation of reference signs: 1-switch housing, 10-voltage terminal, 11-hanging platform, 12-installation frame, 13-reverse buckle structure, 14-card slot, 15-wire slot, 16-clamping plate, 17- Heat shield, 2-current transformer, 20-conductor, 21-ring terminal, 22-raised edge, 3-multi-function meter, 31-connection port, 4-output port module, 5-operating handle, 6-external terminal Components, 7-fuse, 8-inlet board.

detailed description

The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "first", "second", and "third" are only used for description purposes, and should not be understood as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

Example 1

Below in conjunction with accompanying drawing this embodiment is described in detail:

This embodiment provides a strip fuse type isolating switch as shown in Figures 1-7, including a switch housing 1, and an operating handle 5, a contact system and an external terminal assembly arranged in the switch housing 1 6. The operating handle drives the fuse 7 and the static contact in the contact system to disconnect or close, the external terminal assembly 6 is connected to the static contact, and the fuse 7 is correspondingly arranged at the In a plurality of spaced accommodating spaces formed by the switch housing 1, a number of current transformers 2 are arranged on the bottom of the switch housing 1 corresponding to the static contacts, and the middle cavity of the current transformer 2 passes through There is a conductor 20 connected to the static contact, and a multi-function meter 3 installed on one end of the switch housing 1 through a mounting structure, and an output port module 4 capable of remotely transmitting data of the multi-function meter 3, The multi-function meter 3 has several connection ports electrically connected with the current transformer 2 and the voltage terminal 10 on the switch housing.

The above-mentioned embodiment is the core technical solution of this embodiment, by providing a number of current transformers 2 at the bottom of the switch housing 1, and installing a multi-function meter 3 and an output port module on one end of the switch housing 1 through the installation structure 4. With this structure setting, on the one hand, the multi-function meter can effectively record the change of power parameters in the isolating switch circuit, and at the same time, it can also identify whether the voltage and current of each phase of the isolating switch are abnormal and record the corresponding loss of voltage and current status. It is safe and reliable, and remote transmission can be realized by connecting the output port module, which is not limited by time and space, and improves the performance. The use function of the isolating switch improves the guarantee basis. Therefore, the utility model adds a current transformer 2 and a multi-function meter 3 to the isolating switch, which enriches the product functions and can also be remotely output. The scope of application can improve market competitiveness and meet the needs of corresponding users.

According to the above embodiment, as further preferred, as shown in Figure 2 and Figure 7, the terminal of the current transformer 2 is connected with a ring terminal 21, wherein the voltage terminal 10 is fixedly arranged at the bottom of the switch housing and Electrically connected with the static contact, the voltage terminal 10 is provided with a voltage detection hole, and the ring terminal 21 and the voltage detection hole are respectively connected to the connection port through a wire, so that the multi-function meter 3 can monitor the isolation Switch operating current, voltage, etc. The conductor 20 is a copper busbar, which has a first connection end and a second connection end located at both axial ends of the current transformer 2, the first connection end is fixedly connected to the static contact, and the first connection end is fixedly connected to the static contact. The two connection ends are fixedly connected with the incoming line board 8, and the said incoming line board 8 is connected with three-phase power supply, and has three. Therefore, the large current can be converted into a small current, which can be used as power supply for the detection instrument and the protection device. The design is reasonable and the use is convenient. In this embodiment, the multi-function meter 3 is a multi-function power meter capable of measuring all commonly used power parameters in a three-phase circuit system with high precision: three-phase voltage, three-phase current, active power, reactive power, Power factor, grid frequency, active energy, reactive energy, with communication interface and energy pulse output function. It has the characteristics of convenient installation, simple wiring, convenient maintenance, small engineering quantity, field programmable setting input parameters, etc. The connection port of the multi-function meter 3 has multiple connection modes and usage functions such as connecting current transformers and output port modules, wherein the output port module 4 is connected to an external control system. At the same time, the wiring structure of the isolating switch and the multi-function meter 3 is explained: the connection port includes a current interface and a voltage interface, etc., the current interface on the multi-function meter 3 is electrically connected with the ring terminal on the current transformer 2 through a wire, and multiple The voltage interface on the function meter is electrically connected with the voltage terminal connected from the static contact through a wire, so as to realize that the multi-function meter 3 collects relevant power parameters during the working process.

Further preferably, two sides of the current transformer 2 are formed with two flanges 22 extending horizontally, and connection holes are formed on the two flanges 22, and the two flanges 22 pass through the two flanges 22 by screws. After the connection hole is fixed on the sides on both sides of the bottom of the switch housing 1, as shown in Figure 1-2, a current transformer 2 etc. is formed between the two sides of the bottom of the switch housing 1. In the bottom space of the components, the fixed current transformer 2 is accommodated in the bottom space of the switch case 1, and its surface is flush with the bottom edge of the switch case. With this structure, it is more convenient to install the current transformer 2, and the fixing is reliable, and it is also convenient for the conductor and wiring of the current transformer.

In this embodiment, as shown in Figures 5-6, the switch housing 1 includes three operating units with the fuse 7 and static contacts, and the three operating units are connected to the three-phase lines correspondingly, the The operating handle is installed in cooperation with the three operating units, and can synchronously drive the three operating units to perform opening and closing actions. Wherein, the operating handle 5 is rotatably arranged on the switch housing 1 and operates synchronously with the fuses in the three operating units, and the static contact is fixedly arranged in the switch housing 1 to communicate with the fuses. One end of 7 is opposite. Therefore, during the movement of the operating handle 5, the fuse can be brought into contact with the corresponding static contact, and the fuse 7 can protect each phase of the circuit by fusing. The external terminal assembly 6 is composed of three outlet plates, one end of the three outlet plates is respectively fixedly connected to the static contacts in the operation unit, and the other end is provided with a terminal for connecting an external cable, the wiring The terminals are located on the open end of the switch housing 1, which is convenient for connection and disassembly.

Below in conjunction with accompanying drawing 3-4 the installation structure of the present embodiment is described in detail:

The installation structure includes: a hanging platform 11 arranged on one end of the switch housing 1, and a mounting frame 12 detachably fixed on the hanging platform of the switch housing 1, wherein there are two hanging platforms 11, And set oppositely, thus form a socket in the vertical direction with one end of the switch housing 1, so that the installation frame 12 can be disassembled and connected for use; wherein the multi-function meter 3 and the output port module 4 are fixedly arranged on the installation On the frame 12, the mounting frame 12 is provided with a heat shield 17 between the multi-function meter 3 and one end of the switch housing, so as to prevent the heat generated in the isolating switch from directly acting on the multi-function meter 3 . A specific setting method, the installation structure also includes an undercut structure 13 arranged on one end of the installation frame 12, and a clip formed on the hanging table 11 that can be engaged with the undercut structure 13 The slot 14 is snapped into the slot through an undercut structure, so that the mounting bracket is fixedly connected to the hanging platform; the undercut structure 13 is preferably a wedge-shaped protrusion arranged obliquely downward, and the slot is preferably It is a wedge-shaped groove matched with the wedge-shaped protrusion.

As shown in Figure 2, the bottom side of the switch housing 1 is formed with a wire groove 15 that can accommodate the wires, and several groups of pressure plates 16 are fixed on the wire groove 15, and the wire pressure plates 16 are formed There are two through holes suitable for wires to pass through, and the arrangement directions of the two through holes are perpendicular to each other. Wherein the wire groove can accommodate 1-4 wires, the wires are fixed in the wire groove through the wire pressing plate 16, and the wires to be tapped are connected to the isolating switch in an orderly manner through the through holes on the wire pressing plate 16, The setting method of the above structure has a good positioning effect, can prevent loose wires, ensure neat wiring, and meet design specifications.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (10)

1. A strip fuse type isolating switch, comprising a switch housing (1), and an operating handle (5), a contact system and an external terminal assembly (6) arranged in the switch housing (1), The operating handle drives the fuse (7) and the static contact in the contact system to disconnect or close, the external terminal assembly (6) is connected to the static contact, and the fuse (7) Correspondingly arranged in several spaced accommodating spaces formed by the switch housing (1), characterized in that: the bottom of the switch housing (1) is provided with several current transformers (2 ), the middle cavity of the current transformer (2) is pierced with a conductor (20) connected to the static contact, and also includes a multifunctional meter (3), and an output port module (4) capable of remotely transmitting the data of the multi-function meter (3), the multi-function meter (3) is equipped with the current transformer (2) and the switch shell Several connection ports electrically connected to the voltage terminals (10) on the body. 2. A strip fuse type isolating switch according to claim 1, characterized in that: The terminal of the current transformer (2) is connected with a ring terminal (21), the voltage terminal (10) is provided with a voltage detection hole, and the ring terminal (21) and the voltage detection hole respectively pass through Wires are connected to the connection ports. 3. A strip fuse type isolating switch according to claim 2, characterized in that: The conductor (20) has a first connection end and a second connection end located at both axial ends of the current transformer (2), the first connection end is fixedly connected to the static contact, and the second connection end The terminal is fixedly connected with the incoming board (8). 4. A strip fuse type isolating switch according to claim 3, characterized in that: Both sides of the current transformer (2) are formed with two flanges (22) extending horizontally, and connecting holes are formed on the two flanges (22), and the two flanges (22) are connected by screws. After passing through the connecting hole, it is fixed on the side edges on both sides of the bottom of the switch housing (1). 5. A strip fuse type isolating switch according to claim 1, characterized in that: The installation structure includes: a hanging table (11) arranged on one end of the switch housing (1), and a mounting frame (12) detachably fixed on the hanging table of the switch housing (1); The multi-function meter (3) and the output port module (4) are fixedly arranged on the mounting frame (12), and the mounting frame (12) is provided with a Heat shield (17) between one end. 6. A strip fuse type isolating switch according to claim 5, characterized in that: The installation structure also includes an undercut structure (13) arranged on one end of the installation frame (12), and an undercut structure (13) formed on the hanging platform (11) capable of engaging with the undercut structure (13). card slot (14). 7. A strip fuse type isolating switch according to claim 6, characterized in that: The undercut structure (13) is a wedge-shaped protrusion arranged obliquely downward. 8. A strip fuse type isolating switch according to claim 5, characterized in that: The bottom side of the switch housing (1) is formed with wire grooves (15) that can accommodate wires, and several groups of wire pressing plates (16) are fixed on the wire grooves (15). 16) A through hole suitable for wire penetration is formed on the top. 9. A strip fuse type isolating switch according to claim 5, characterized in that: The switch housing (1) includes three operating units with the fuse and the static contact, and the operating handle is installed in cooperation with the three operating units, and can drive the three operating units synchronously to separate Closing action. 10. A strip fuse type isolating switch according to claim 9, characterized in that: The external terminal assembly (6) is composed of three outlet plates, one end of the three outlet plates is respectively fixedly connected with the static contacts in the operation unit, and the other end is provided with a connection terminal for an external cable. The connecting terminal is located on the open end of the switch housing (1).