CN212875123U

CN212875123U - High-voltage star-delta manual switching cabinet

Info

Publication number: CN212875123U
Application number: CN202021794386.5U
Authority: CN
Inventors: 王爱春
Original assignee: Anhui Derun Electric & Technology Co ltd
Current assignee: Anhui Derun Electric & Technology Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-04-02
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a high-voltage star-delta manual switching cabinet, which belongs to the technical field of electric power cabinets, and particularly relates to a high-voltage star-delta manual switching cabinet, which comprises a cabinet body, a main cabinet, an auxiliary cabinet, an interlocking operation panel, a single-pole isolating switch, a single-pole double-throw isolating switch, an operating rod and an isolating switch mounting plate, wherein the front side wall of the cabinet body is embedded with the main cabinet and the auxiliary cabinet, the front side walls of the main cabinet and the auxiliary cabinet are fixedly connected with the interlocking operation panel through screws, the rear side walls of the inner cavities of the main cabinet and the auxiliary cabinet are fixedly connected with the isolating switch mounting plate through bolts, the high-voltage star-delta manual switching cabinet realizes the functions of a frequency conversion bypass and a star-delta direct starting motor only by two switch cabinets, has small occupied area, greatly reduces the investment cost, is convenient and simple to operate, is secondly complete and reliable in interlocking, effectively protects the safety of operation and maintenance personnel, the use of power cables is reduced, the dynamic and thermal stability current parameter values are high, and the operation is more reliable.

Description

High-voltage star-delta manual switching cabinet

Technical Field

The utility model relates to an electric power cabinet technical field specifically is a manual switch cabinet of high-pressure star angle.

Background

Both power transmission and distribution facilities include equipment such as substations and lines. All transmission equipment are connected to form a transmission network. The network of distribution equipment from the transmission grid to the users is called the distribution grid. They are sometimes also referred to as transmission and distribution systems. Transmission systems and distribution systems, together with power plants and consumers, are collectively referred to as power systems. The various electrical devices in the power system have their own voltage ratings which make up the voltage rating of the overall power system. The voltage used for power transmission is higher than the distribution voltage. The division of transmission and distribution voltage limits is not fixed and varies with the area covered by the grid and the size of the capacity, and bypass cabinets are used in the process.

Before the speed regulation transformation is not carried out on the high-voltage motor, the high-voltage motor is controlled to be started and stopped by a circuit breaker at the upper opening of the motor, and the motor is directly connected with a bus and runs at a constant speed. After the frequency conversion speed regulation is transformed, a set of high-voltage frequency conversion speed regulation device is additionally arranged between the motor and the bus besides the original high-voltage circuit breaker. With the increase of the use of the frequency converters, engineers and technicians find that when the frequency converters have faults and need to be overhauled, the motors have to be stopped, and the requirements of field continuous production cannot be met. Therefore, engineering technicians add a set of switching device between the frequency converter and the motor and between the frequency converter and the bus to meet the requirement of continuous operation of the motor. According to the difference of the change-over switch, the bypass scheme of the frequency converter is divided into a manual bypass mode and an automatic bypass mode, and the bypass cabinet is arranged for ensuring the reliable and uninterrupted operation of the load.

The 3KV, 6KV and 10KV motors do not have special star-triangle manual switching bypass cabinets matched with the high-voltage frequency converter, users in various large design houses do not know how to select the switching bypass cabinet type and the structural form, because most of medium-voltage switch cabinets in the market are switch cabinets, if the switching is performed according to the selection, the frequency conversion bypass and star-triangle switching functions are achieved, 5 switch cabinets are adopted, and medium-voltage connecting cables among the cabinets are too many, so that the occupied area and the investment cost are high, and the potential fault hazard is more.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a manual switch over cabinet of high-pressure star angle, 3KV with solving and proposing in the above-mentioned background art, 6KV, 10KV motor does not have the supporting star-triangle manual switch over bypass cabinet that uses of special and high-voltage inverter, each big institute of design, use the user to switch over bypass cabinet type, the structural style does not know how to select, because the middling pressure cubical switchboard in market is a switch cubicle more, if select according to this, will reach the frequency conversion bypass, star-triangle switching function, will adopt 5 cubical switchboard, and middling pressure connecting cable is too many between each cabinet, so not only account for area and investment cost height, and the many problems of trouble hidden danger.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a manual switch over cabinet of high-pressure star, includes the cabinet body, main cabinet, vice cabinet, interlocking operation panel, single-pole isolator, single-pole double-throw isolator, action bars and isolator mounting panel, inlay the preceding lateral wall of the cabinet body main cabinet with vice cabinet, main cabinet with the preceding lateral wall of vice cabinet passes through screw fixed connection the interlocking operation panel, main cabinet with the lateral wall passes through bolt fixed connection behind the inner chamber of vice cabinet the isolator mounting panel, the preceding lateral wall of isolator mounting panel passes through bolt fixed connection single-pole isolator with single-pole double-throw isolator, single-pole isolator with single-pole double-throw isolator's output all passes through bolt fixed connection the action bars, the output of action bars with the input of interlocking operation panel is pegged graft.

Preferably, the right side of the front side wall of the main cabinet is fixedly connected with a fixed door through a screw, and the left side of the front side wall of the main cabinet is fixedly connected with a turnover cover through a screw.

Preferably, the front side wall of the flip cover is fixedly connected with a lighting lamp through a screw, and the bottom of the front side wall of the flip cover is provided with a grid.

Preferably, the integral structure of the auxiliary cabinet is matched with that of the main cabinet.

Preferably, single-pole isolator is one, single-pole double-throw isolator is two, JS operating mechanism is adapted to the interlock operation panel, mechanical interlock is installed to the operating device.

Compared with the prior art, the beneficial effects of the utility model are that: the high-voltage star-delta manual switching cabinet is applied by combining accessories, adopts an assembled cabinet type and an modularized design, has the installation modulus of 20mm, can be adapted to isolation switches with different currents, is formed by assembling two switch cabinets, can be used according to the construction condition of a user substation, consists of two single-pole double-throw isolation switches and one single-pole isolation switch, is provided with a JS operating mechanism specially designed for the same, has reliable mechanical interlocking on the mechanism, ensures that a client cannot operate mistakenly, has simple and compact structural form, convenient operation and maintenance, can be maintained simultaneously from front to back, has perfect five-prevention interlocking for preventing the client from operating mistakenly on the JS special operating mechanism, can be additionally provided with an electromagnetic lock and a superior circuit breaker or a frequency converter for electrically interlocking, has clear logical relation, adopts busbar connection between the two cabinets, reduces the use of power cables, and has dynamic and dynamic effects, The thermal stability current parameter value is high, and the operation is more reliable.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the main cabinet of the present invention;

FIG. 3 is a side internal view of the auxiliary cabinet of the present invention;

FIG. 4 is a schematic view of the inside of the back of the main cabinet of the present invention;

fig. 5 is a schematic circuit diagram of the present invention.

In the figure: 100 cabinets, 110 main cabinets, 120 fixed doors, 130 covers, 140 lighting fixtures, 150 interlocking operation panels, 160 auxiliary cabinets, 200 single-pole isolating switches, 300 single-pole double-throw isolating switches, 400 operating rods and 500 isolating switch mounting plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a manual switch cabinet of high pressure star, through the combination application of accessory, area is little, investment cost greatly reduced. The operation is convenient and simple, the interlocking is complete and reliable, the safety of operation and maintenance personnel is effectively protected, please refer to fig. 1-5, and the device comprises a cabinet body 100, a main cabinet 110, an auxiliary cabinet 160, an interlocking operation panel 150, a single-pole isolating switch 200, a single-pole double-throw isolating switch 300, an operating rod 400 and an isolating switch mounting plate 500;

referring to fig. 1 again, the front side wall of the cabinet body 100 is provided with a main cabinet 110 and an auxiliary cabinet 160, specifically, the main cabinet 110 and the auxiliary cabinet 160 are embedded in the front side wall of the cabinet body 100, the front side walls of the main cabinet 110 and the auxiliary cabinet 160 are fixedly connected with the interlocking operation panel 150 through screws, and the overall structure of the auxiliary cabinet 160 is matched with the overall structure of the main cabinet 110;

referring to fig. 1-3 again, the left sidewall of the single-pole isolating switch 200 is fixedly connected to the right sidewall of the inner cavity of the cabinet body 100, specifically, the rear sidewalls of the inner cavities of the main cabinet 110 and the auxiliary cabinet 160 are fixedly connected to the isolating switch mounting plate 500 through bolts, and the front sidewall of the isolating switch mounting plate 500 is fixedly connected to the single-pole isolating switch 200 through bolts;

referring to fig. 1-4 again, the left sidewall of the single-pole double-throw isolating switch 300 is fixedly connected to the right sidewall of the inner cavity of the cabinet body 100, specifically, the rear sidewalls of the inner cavities of the main cabinet 110 and the auxiliary cabinet 160 are fixedly connected to the isolating switch mounting plate 500 through bolts, and the front sidewall of the isolating switch mounting plate 500 is fixedly connected to the single-pole double-throw isolating switch 300 through bolts;

referring to fig. 1-3 again, the left sidewall of the operating rod 400 is fixedly connected to the left sidewalls of the single-pole isolating switch 200 and the single-pole double-throw isolating switch 300, specifically, the output ends of the single-pole isolating switch 200 and the single-pole double-throw isolating switch 300 are fixedly connected to the operating rod 400 through bolts, and the output end of the operating rod 400 is inserted into the input end of the interlocking operating panel 150;

when the combined interlocking type intelligent cabinet is used specifically, the main cabinet 110 and the auxiliary cabinet 160 are combined in front of the cabinet body 100, the combined interlocking type intelligent cabinet can be used according to the construction condition of a user transformer substation, the fixed door 120 and the flip cover 130 are connected to the main cabinet 100, the observation window is embedded in the flip cover 130, meanwhile, the lighting lamp 140 and the grille are combined at the front side of the flip cover 130, the isolating switch mounting plate 500 is fixedly connected to the rear side wall of the inner cavity of the main cabinet 110 and the rear side wall of the auxiliary cabinet 160, after the conventional accessories are combined conveniently, the single-pole isolating switch 200 and the single-pole double-throw isolating switch 300 are connected, the single-pole double-throw isolating switch 200 is one, the single-pole double-throw isolating switch 300 is two, and are both connected with the interlocking operation panel 150, the interlocking operation panel 150 is provided with a JS operation mechanism, the mechanical interlocking is arranged on the operation mechanism, the misoperation of a client is avoided, the structure is simple and compact, the operation and the, the electromagnetic lock can be additionally arranged to be electrically interlocked with a higher-level circuit breaker or a frequency converter, the logic relation is clear and clear, meanwhile, the two cabinets are connected through the busbar, the use of power cables is reduced, the dynamic and thermal stability current parameter values are high, and the operation is more reliable.

Referring to fig. 1 again, in order to facilitate the opening of the interior of the main cabinet 110, specifically, the right side of the front side wall of the main cabinet 110 is fixedly connected with a fixed door 120 through screws, and the left side of the front side wall of the main cabinet 110 is fixedly connected with a flip 130 through screws.

Referring to fig. 1 again, in order to facilitate external lighting, increase air exchange effect, and facilitate heat dissipation, specifically, the front sidewall of the flip cover 130 is fixedly connected to the lighting fixture 140 through screws, and the bottom of the front sidewall of the flip cover 130 is provided with a grid.

Referring to fig. 1-2 again, in order to ensure the safety and stability of the combined use, specifically, the single-pole isolating switch 200 is one, the single-pole double-throw isolating switch 300 is two, and the interlock operating panel 150 is equipped with a JS operating mechanism, and a mechanical interlock is installed on the operating mechanism.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a manual cubical switchboard of high pressure star corner which characterized in that: the intelligent cabinet comprises a cabinet body (100), a main cabinet (110), an auxiliary cabinet (160), an interlocking operation panel (150), a single-pole isolating switch (200), a single-pole double-throw isolating switch (300), an operating rod (400) and an isolating switch mounting plate (500), wherein the main cabinet (110) and the auxiliary cabinet (160) are embedded in the front side wall of the cabinet body (100), the front side walls of the main cabinet (110) and the auxiliary cabinet (160) are fixedly connected with the interlocking operation panel (150) through screws, the rear side walls of inner cavities of the main cabinet (110) and the auxiliary cabinet (160) are fixedly connected with the isolating switch mounting plate (500) through bolts, the front side wall of the isolating switch mounting plate (500) is fixedly connected with the single-pole isolating switch (200) and the single-pole double-throw isolating switch (300) through bolts, the output ends of the single-pole isolating switch (200) and the single-pole double-throw isolating switch (300) are fixedly connected with the operating rod (400) through bolts, the output end of the operating rod (400) is plugged with the input end of the interlocking operating panel (150).

2. The high-voltage star-delta manual switching cabinet according to claim 1, characterized in that: the front side wall right side of the main cabinet (110) is fixedly connected with a fixed door (120) through screws, and the front side wall left side of the main cabinet (110) is fixedly connected with a flip cover (130) through screws.

3. The high-voltage star-delta manual switching cabinet according to claim 2, characterized in that: the front side wall of the flip cover (130) is fixedly connected with a lighting lamp (140) through screws, and the bottom of the front side wall of the flip cover (130) is provided with a grid.

4. The high-voltage star-delta manual switching cabinet according to claim 1, characterized in that: the overall structure of the sub cabinet (160) matches the overall structure of the main cabinet (110).

5. The high-voltage star-delta manual switching cabinet according to claim 1, characterized in that: the single-pole isolating switch (200) is one, the single-pole double-throw isolating switch (300) is two, JS operation mechanisms are matched with the interlocking operation panel (150), and mechanical interlocking is installed on the operation mechanisms.