CN219370888U - Sleeve type integrated combined device - Google Patents

Abstract

The utility model provides a sleeve type integrated combined device, which structurally comprises a vacuum arc extinguishing chamber (101), a conductive rod (103), a mutual inductor coil (104), a sleeve (110) and a mounting flange (109) in the middle of the sleeve (110); the first end of the vacuum arc-extinguishing chamber (101) is electrically connected with the first end of the conductive rod (103), and the second end of the vacuum arc-extinguishing chamber (101) can be electrically connected with an external circuit; the mutual inductor coil (104) is sleeved outside the conductive rod (103) and is fixed on the mounting surface of the mounting flange (109); the vacuum arc extinguishing chamber (101), the conductive rod (103) and the transformer coil (104) are all arranged in the sleeve (110). The device adopts an integrated structure, reduces other redundant components existing when each device is independently arranged, shortens the circuit length, and reduces the cost.

Description

Sleeve type integrated combined device

Technical Field

The utility model mainly relates to the technical field of switch cabinet matched devices, in particular to a sleeve type integrated combination device.

Background

The switch cabinet (switch cabinet) is an electrical device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a sub-control switch, each shunt is arranged according to the requirements, such as an instrument, an automatic control, a motor magnetic switch, various alternating current contactors and the like, a high-voltage chamber and a low-voltage chamber switch cabinet are further arranged, a high-voltage bus is arranged, such as a power plant and the like, and a low-frequency load reducer for protecting the main device is further arranged. The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of generating, transmitting, distributing and converting electric energy of the electric power system.

At present, in a high-voltage distribution network, matched components of a switch cabinet exist independently, the matched components are combined according to a cabinet body scheme of the power distribution cabinet and are installed at proper positions, and the components comprise: vacuum circuit breaker (commonly called high-voltage vacuum switch, core piece is vacuum interrupter), current transformer, sleeve pipe, voltage transformer, arrester (supporting counter), sensor (supporting live display), isolator, busbar (each component for connection), etc. There are some drawbacks to the stand alone device setup: firstly, the number of devices or auxiliary devices is large, and the cost is high; secondly, the circuit length is longer, which is unfavorable for equipment installation.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a sleeve type integrated combined device, which reduces other redundant components existing when each device is independently arranged, shortens the circuit length, simultaneously reduces the cost, occupies less space and reduces the material consumption.

In order to solve the technical problems, the utility model provides a sleeve type integrated combined device, which comprises a vacuum arc extinguishing chamber, a conductive rod, a transformer coil, a sleeve and a mounting flange in the middle of the sleeve; the first end of the vacuum arc-extinguishing chamber is electrically connected with the first end of the conductive rod, and the second end of the vacuum arc-extinguishing chamber can be electrically connected with an external circuit; the mutual inductor coil is sleeved outside the conductive rod and is fixed on the mounting surface of the mounting flange; the vacuum arc-extinguishing chamber, the conductive rod and the transformer coil are all arranged in the sleeve.

Further, the mounting flange has a first screw hole for mounting the transformer coil.

Further, the outer contour of the mounting flange is rectangular, the number of the first screw holes is 4, and the first screw holes are distributed at 4 corners of the mounting flange.

Further, the second end of the conductive rod is provided with a second screw hole for being electrically connected with an external circuit.

Further, the void within the sleeve is filled with an insulating medium.

Further, the insulating medium is made of an epoxy resin cured product.

Further, the outer surface of the sleeve is a skirt.

Compared with the prior art, the utility model has the following beneficial effects: the vacuum arc-extinguishing chamber, the sleeve, the transformer coil, the conductive rod and the like are integrated into a whole, and an insulating piece is not needed to be additionally arranged to support the vacuum arc-extinguishing chamber. When the circuit breaker is assembled, the combined device can be arranged on one side of a circuit breaker support, the isolating switch can be arranged on the other side of the support, one end of the vacuum arc-extinguishing chamber is connected with an operating mechanism of the circuit breaker, one end of the sleeve is directly used for replacing a contact of the isolating switch and a supporting part of the contact, the required space is much smaller than that when each device is independently arranged, and because the integrated combined device is used for replacing some parts, the circuit length is shortened, and the circuit cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the accompanying drawings:

FIG. 1 is a schematic view of a sleeve-type integrated composite device according to an embodiment of the present utility model;

FIG. 2 is a right side view of the sleeve-type integrated composite device of FIG. 1;

fig. 3 is a left side view of the telescopic integrated combination device of fig. 1.

Each symbol in the figures is represented as:

101-a vacuum arc extinguishing chamber; 102-an insulating medium; 103-conductive bars; 104-a transformer coil; 105-coil terminals; 106-a first screw hole; 107-skirt; 108-a second screw hole; 109-mounting flange; 110-sleeve.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present utility model, and it is apparent to those of ordinary skill in the art that the present utility model may be applied to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

It should be noted that, the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, so they should not be construed as limiting the scope of the present utility model. Furthermore, although terms used in the present utility model are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present utility model is understood, not simply by the actual terms used but by the meaning of each term lying within.

It will be understood that when an element is referred to as being "on," "connected to," "coupled to," or "contacting" another element, it can be directly on, connected or coupled to, or contacting the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," or "directly contacting" another element, there are no intervening elements present. Likewise, when a first element is referred to as being "electrically contacted" or "electrically coupled" to a second element, there are electrical paths between the first element and the second element that allow current to flow. The electrical path may include a capacitor, a coupled inductor, and/or other components that allow current to flow even without direct contact between conductive components.

Referring to fig. 1 to 3, the sleeve type integrated combination device provided in this embodiment mainly includes: vacuum interrupter 101, conductive rod 103, transformer coil 104, sleeve 110, and mounting flange 109 in the middle of sleeve 110. The first end of the vacuum interrupter 101 (the right end of the vacuum interrupter 101 in the drawing) is electrically connected to the first end of the conductive rod 103 (the left end of the conductive rod 103 in the drawing), and the second end of the vacuum interrupter 101 (the left end of the vacuum interrupter 101 in the drawing) can be electrically connected to an external circuit. The transformer coil 104 is sleeved outside the conductive rod 103, that is, the conductive rod 103 passes through the hollow area inside the transformer coil 104, and the transformer coil 104 is fixed on the mounting surface of the mounting flange 109. In addition, the vacuum interrupter 101, the conductive rod 103 and the transformer coil 104 are all disposed within the sleeve 110 to form an integrated assembly.

In the integrated combined device, the vacuum arc-extinguishing chamber 101 is a core component forming a circuit breaker, and is mechanically connected with an operating mechanism in the circuit breaker, and high-voltage current is separated and combined along with the action of the mechanism, and a separating and combining fracture is a contact inside the vacuum arc-extinguishing chamber 101. The vacuum interrupter 101 can be insulated and encapsulated to form a required insulator (called a solid-sealed pole) outside, so that the external insulation effect of the vacuum interrupter 101 can be effectively increased, the distance between the vacuum interrupter 101 and other devices is reduced, and the space required by the circuit breaker in the switch cabinet is reduced. The transformer coil 101 comprises a current transformer, and the current transformer is an electrical element which converts the current of the high-voltage loop of the distribution network into low-voltage small current suitable for being identified and used by a metering device in proportion, and plays a role in insulating and isolating the high-voltage loop from the secondary control loop. The bushing 110 is then a transition element connecting the high voltage circuit between the switches. The integrated combined device replaces redundant components existing when the original devices are independently arranged, so that the circuit length can be shortened, and the circuit cost can be reduced.

In some embodiments, the mounting flange 109 has a first screw hole 106 for securing the transformer coil 104. More preferably, the outer contour of the mounting flange 109 is rectangular, the number of the first screw holes 106 is 4, and the first screw holes 106 are distributed at 4 corners of the mounting flange 109 to fix the transformer coil 104 more firmly.

In some embodiments, the second end of the conductive rod 103 (the right end of the conductive rod 103 in the drawing) has a second screw hole 108 for electrical connection with an external circuit, and the second screw hole 108 serves as a fixed contact fixing position of the isolating switch. The conductive rod 103 is used as a circuit conductor in the sleeve 110 and is used as a part of a high-voltage loop conductor, and is connected with one end of the vacuum arc-extinguishing chamber 101 and a subsequent isolating switch, so that a static contact of the isolating switch is supported, and meanwhile, the conductive rod also serves as a primary coil of a current transformer. The second end of the conductive rod 103 has a second screw hole 108 for electrical connection with an external circuit, so that the conductive rod 103 is more firmly connected in the circuit by the second screw hole 108 and a connector in the circuit that mates with the second screw hole 108.

The transformer coil 104 comprises a current transformer, and an electromagnetic field generated by a current flowing through the conductive rod 103 from the secondary coil of the current transformer induces a corresponding current in the coil for measurement and relay protection. When the current value of the current transformer reaches a relay protection preset value, an operating mechanism of the circuit breaker is started to move, a contact in the vacuum arc extinguishing chamber 101 is pulled open, a vacuum gap is formed, and a high-voltage circuit is cut off. The transformer coil 104 also has a coil terminal 105, and the coil terminal 105 is a connection point of the secondary coil of the current transformer to the external output current, and may be a copper nut of M6.

In some embodiments, the voids within sleeve 110 are filled with insulating medium 102. The material of the insulating medium 102 is illustratively an epoxy resin cured product, and of course, the material of the insulating medium 102 is not limited to epoxy resin cured product and filler mixture. The insulating medium 102 is cured under certain process conditions, and the insulating medium 102 forms a solid insulator, which plays a role in insulation and fixing and supporting other devices.

In some embodiments, the outer surface of sleeve 110 is skirt 107. The skirt 107 is formed by solidifying a preset shape on a mold during insulating encapsulation, and the existence of the skirt 107 increases the surface distance (creepage distance) from the outer part of the high-voltage conductor to the ground (mounting bracket), so that the surface insulation of the product is enhanced, and the arc or breakdown cannot be flashover along the surface of the product during test and fault.

The sleeve type integrated combined device provided by the embodiment integrates the vacuum arc extinguishing chamber 101, the sleeve 110, the transformer coil 104, the conductive rod 103 and the like into a whole, and after the device is integrated, other devices such as a breaker, an isolating switch and the like can be arranged on the same bracket, so that the space required by the assembly of the switch cabinet is reduced, and the size of the switch cabinet can be reduced. Meanwhile, the use of the integrated device replaces a fixed contact supporting insulator of the isolating switch, shortens the electric connection length, reduces the use amount of nonferrous metal and reduces the cost.

It will be apparent to those skilled in the art from this disclosure that the foregoing disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements and adaptations of the utility model may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within the present disclosure, and therefore, such modifications, improvements, and adaptations are intended to be within the spirit and scope of the exemplary embodiments of the present disclosure.

While the utility model has been described with reference to the specific embodiments presently, it will be appreciated by those skilled in the art that the foregoing embodiments are merely illustrative of the utility model, and various equivalent changes and substitutions may be made without departing from the spirit of the utility model, and therefore, all changes and modifications to the embodiments are intended to be within the scope of the appended claims.

Claims (7)

1. The sleeve type integrated combined device is characterized by comprising a vacuum arc extinguishing chamber (101), a conductive rod (103), a transformer coil (104), a sleeve (110) and a mounting flange (109) in the middle of the sleeve (110);

the first end of the vacuum arc-extinguishing chamber (101) is electrically connected with the first end of the conductive rod (103), and the second end of the vacuum arc-extinguishing chamber (101) can be electrically connected with an external circuit;

the mutual inductor coil (104) is sleeved outside the conductive rod (103) and is fixed on the mounting surface of the mounting flange (109); the vacuum arc extinguishing chamber (101), the conductive rod (103) and the transformer coil (104) are all arranged in the sleeve (110).

2. Sleeve-type integrated combination according to claim 1, characterized in that the mounting flange (109) has a first screw hole (106) for mounting the transformer coil (104).

3. The telescopic integrated combination according to claim 2, wherein the outer contour of the mounting flange (109) is rectangular, the number of the first screw holes (106) is 4, and the first screw holes (106) are distributed at 4 corners of the mounting flange (109).

4. The telescopic integrated combination according to claim 1, wherein the second end of the conductive rod (103) has a second screw hole (108) for electrical connection with an external circuit.

5. The ferrule integrated composite set of claim 1, wherein voids within the ferrule (110) are filled with an insulating medium (102).

6. The sleeve-type integrated composite device according to claim 5, wherein the insulating medium (102) is an epoxy resin cured product.

7. The cannula-integrated combination of claim 1, wherein the outer surface of the cannula (110) is a skirt (107).