CN219042403U

CN219042403U - Air-cooled container structure for M3C frequency converter

Info

Publication number: CN219042403U
Application number: CN202320036503.9U
Authority: CN
Inventors: 杨斌; 吕侃; 王召; 靳广超; 毕良富
Original assignee: Tbea Xi'an Flexible Power T&d Co ltd; TBEA Xinjiang Sunoasis Co Ltd
Current assignee: Tbea Xi'an Flexible Power T&d Co ltd; TBEA Xinjiang Sunoasis Co Ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-05-16
Anticipated expiration: 2033-01-07

Abstract

An air-cooled container structure for an M3C frequency converter is characterized in that a control cabin and a standby module placing cabin are arranged in a box body, a power cabin is arranged between the control cabin and the standby module placing cabin, the power cabin is divided into a front cabin and a rear cabin through an insulating frame, a plurality of groups of bridge arm reactance are arranged on a bottom plate of the rear cabin, each group of bridge arm reactance is connected in series to form a phase, the phase corresponds to a three-phase power module arranged on the insulating frame, and a power line is sequentially connected with the bridge arm reactance, an alternating current filter capacitor and the power module on the insulating frame through a lower wire inlet; a plurality of groups of detachable air inlet assemblies with air filters are arranged at the bottom of the front cabin, a lower air inlet is correspondingly formed in the front cabin, and a plurality of fans are arranged on the back plate of the rear cabin; the front cabin equipment and the rear cabin equipment are arranged in a weight relatively balanced way, so that eccentricity is avoided; the bridge arm reactance is correspondingly connected with the three-phase power module, so that the installation and connection are more convenient, and the confusion of arrangement among lines is avoided; and a lower air inlet mode is adopted to realize the closed internal circulation operation of the M3C frequency converter equipment.

Description

Air-cooled container structure for M3C frequency converter

Technical Field

The utility model relates to the technical field of flexible high-voltage direct current transmission, in particular to an air-cooled container structure for an M3C frequency converter, which is suitable for the field of frequency division transmission.

Background

M3C belongs to the frequency division transmission field, and conventional container size is limited by the transportation condition of various means of transportation, and all certain restriction, and when M3C converter container structure design, receive the restriction of container overall size, interior equipment structure arrangement need to consider problems such as safety, heat dissipation, maintenance and installation comprehensively, once structural layout is unreasonable, can lead to whole equipment to take place partial discharge, and equipment can't normally run endangers the heavy accident such as personal safety.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide an air-cooled container structure for an M3C frequency converter, wherein a control cabin, a power cabin, a standby module placement cabin and an air inlet assembly with an air filter are reasonably arranged in a box body, so that the whole intensification of equipment is improved, meanwhile, the interior is fully cooled, the safety is high, the installation and the maintenance are easy, the structure is simple, the layout is reasonable, and the airtight internal circulation operation of the M3C frequency converter equipment can be realized.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides an air-cooled container structure for M3C converter, includes the box, and the box both sides are provided with control cabin 1, reserve module and place cabin 4, be provided with power cabin 3 between control cabin 1 and the reserve module and place cabin 4, and divide into front cabin 12 and back cabin 16 through insulating frame 8 between control cabin 1 and the reserve module place cabin 4, the power line gets into the box through back cabin 16 lower inlet 6 to be connected with bridge arm reactance 5, alternating current filter capacitor 9 that set up on the bottom plate and the power module on insulating frame 8 in proper order; a plurality of groups of detachable air inlet assemblies 2 with air filters are arranged at the bottom of the front cabin 12, lower air inlets are correspondingly formed in the front cabin, and a plurality of fans 7 are arranged on the back plate of the rear cabin 16.

The bridge arm reactance 5 is provided with a plurality of groups, each 3 groups of bridge arm reactance 5 are connected in series to form a phase, and the phase is correspondingly connected with a three-phase power module arranged on the insulating frame 8 through the alternating current filter capacitor 9.

The rear side of the power cabin 3 is also provided with a soft starting device 15, the front end of the soft starting device 15 is connected with a frequency division power grid through a power cable, and the rear end of the soft starting device is respectively connected with a three-phase power module through a power busbar.

The control cabin 1 is provided with a control cabinet 13 and a UPS power supply 14 of the control cabinet 13; the control cabinet 13 adopts an independent closed metal cabinet body, and an M3C control cabinet, a relay and a circuit breaker which are connected in series are arranged in the control cabinet body to serve as an M3C frequency converter control protection unit.

The power line adopts 240mm ² A power cable.

A plurality of insulating section bars 10 perpendicular to the insulating frame 8 are arranged on the insulating frame 8 at intervals, a plurality of parallel guide rails 11 are arranged on each insulating section bar 10, and power modules are correspondingly installed between every two adjacent guide rails 11.

Compared with the prior art, the utility model has the following beneficial effects:

1. the box body is divided into a front cabin and a rear cabin through the insulating frame 8, the bridge arm reactance 5 is arranged in the rear cabin 16, the front cabin 12 is provided with the detachable air inlet assembly 2 with the air filter, the device integration is convenient, and meanwhile, the equipment arrangement is relatively balanced in weight, so that eccentricity is avoided.

2. Every 3 groups of bridge arm reactance 5 are connected in series to form a phase, and the phase is correspondingly connected with a three-phase power module arranged on the insulating frame 8 through the alternating current filter capacitor 9, so that the installation and connection are more convenient, and the disorder of arrangement among lines is avoided.

3. The air inlet assembly 2 with the air filters is arranged at the bottom of the front cabin 12 in a detachable mode, the lower air inlet is correspondingly formed, the fans 7 are arranged on the back plate of the rear cabin 16, a heat dissipation circulating channel is formed in the box body, heat dissipation requirements of the M3C frequency converter in daily work and under extreme conditions are met, equipment operation and maintenance are facilitated, the service life is prolonged, and safety is improved.

In summary, the device disclosed by the utility model has reasonable layout, fully considers the heat dissipation of the device and the convenience of installation and maintenance, meets the intensive requirements of an demanding party on the device, ensures the safety and prolongs the service life of the device.

Drawings

Fig. 1 is a layout diagram of the overall structure of an M3C container.

Fig. 2 shows a top view of the structural layout of an M3C container.

Fig. 3 shows a left side view of the insulating frame 8.

FIG. 4 is a schematic view of a closed internal circulation air-cooled duct.

In the accompanying drawings: 1-a power cabin; 2-a detachable air intake assembly with an air filter; 3-a control cabin; 4-a standby module placing cabin; 5-bridge arm reactance; 6-a lower inlet; 7-a fan; 8-insulating frames; 9-an alternating current filter capacitor; 10-insulating section bar; 11-a guide rail; 12-front compartment; 13-a control cabinet; 14-UPS power supply; 15-soft-lifting means; 16-rear compartment.

Detailed Description

In order to make the above objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1 and 2, an air-cooled container structure for an M3C frequency converter comprises a box body, wherein a control cabin 1 and a standby module placing cabin 4 are arranged on two sides of the box body, a power cabin 3 is arranged between the control cabin 1 and the standby module placing cabin 4, the power cabin 3 is divided into a front cabin 12 and a rear cabin 16 by an insulating frame 8 between the control cabin 1 and the standby module placing cabin 4, a plurality of groups of bridge arm reactance 5 are arranged on the bottom plate of the rear cabin 16 in a row, each 3 groups of bridge arm reactance 5 are connected in series to form a phase, the phase corresponds to a three-phase power module arranged on the insulating frame 8 respectively, a power line enters the box body through a lower wire inlet 6, and the bridge arm reactance 5, an alternating current filter capacitor 9 and the power module on the insulating frame 8 are sequentially connected; a plurality of groups of detachable air inlet assemblies 2 with air filters are arranged at the bottom of the front cabin 12, lower air inlets are correspondingly formed in the front cabin, and a plurality of fans 7 are arranged on the back plate of the rear cabin 16.

And 3 groups of alternating current filter capacitors 9 are arranged in the power cabin 3, each 1 group of alternating current filter capacitors are connected in series between each phase of bridge arm reactance 5 and each phase of power module, and the electric connection is carried out by adopting a power busbar.

The power cabin 3 is correspondingly provided with 1 group of lower wire inlets 6 beside each 3 groups of bridge arm reactance 5, and the power wires are connected with the 3 groups of bridge arm reactance 5 and 1 group of alternating current filter capacitor 9 in series through the lower wire inlets 6 and then connected to the wiring terminals of the power modules of each phase.

The left rear side of the power cabin 3 is provided with a soft lifting device 15, and the front end passes through 240mm ² The power cable is connected with the frequency division power grid, and the rear end is respectively connected with the 3-phase power module through the power busbar.

Referring to fig. 2, a control cabinet 13 and a UPS power supply 14 are installed in a control cabin 1 of the utility model, wherein the control cabinet 13 is an independently closed metal cabinet body, an M3C control cabinet, a relay, a circuit breaker and the like are installed inside the control cabinet, and the control cabinet is independently installed on a metal bracket in the control cabin 1 as an M3C frequency converter control protection unit, so that the control cabinet is convenient to install and maintain.

Referring to fig. 2, the standby module placing cabin 4 is an isolated independent empty cabin, so that the standby module and other standby tools can be conveniently placed.

Referring to fig. 3 and 4, the insulating frame 8 of the present utility model is fixed by welding beams integrally formed with the container at the top of insulating profiles 10 vertically arranged front and back, and by transverse metal profiles connected with the bottom plate at the bottom. The insulation section bars 10 are fixed by 2 guide rails 11 between the front, the back, the left and the right, are divided into 7 groups up and down, the whole insulation frame 8 forms 9 rows and 7 lines of structural arrangement, and 63 power modules can be placed; wherein 21 power modules in every 3 columns are 1 phase and 3 phases.

The back of the insulating frame 8 is encapsulated by an insulating plate, and forms an independent closed front and rear cabin 16 with the front cabin of the power cabin 3, and forms a heat dissipation air duct of the power cabin 3 of the M3C frequency converter together with the power module.

The working principle of the utility model is as follows:

referring to fig. 2 and 4, the box body is divided into a front cabin 16 and a rear cabin 16 by the insulating frame 8, the bridge arm reactance 5 is arranged in the rear cabin 16, the front cabin 12 is provided with the detachable air inlet assembly 2 with the air filter, the integration of the device is facilitated, and meanwhile, the equipment is relatively balanced in weight and avoids eccentricity.

Every 3 groups of bridge arm reactance 5 are connected in series to form a phase, and the phase is correspondingly connected with a three-phase power module arranged on the insulating frame 8 through the alternating current filter capacitor 9, so that the installation and connection are more convenient, and the disorder of arrangement among lines is avoided.

A lower air inlet mode is adopted, a lower air inlet opening is formed in the front bottom plate of the power cabin 1, and a detachable air inlet assembly 2 with an air filter is arranged; when the equipment operates, the fan 7 is started, heat generated by the power module is sucked into the fan air channel and discharged out of the container body, external cold air flows through the detachable air inlet component 2 with the air filter under the action of air pressure, flows through the air channel formed by the insulating frame 8 and the power module, and is discharged out of the container through the air channel at the fan 7, and the equipment is circulated and repeated in such a way, and is verified by in-plant tests, so that the heat dissipation requirement of the M3C frequency converter in the extreme case is met, the equipment operation and maintenance are facilitated, the service life is prolonged, and the safety is improved; the utility model has simple structure and reasonable layout, and can realize the closed internal circulation operation of the M3C frequency converter equipment.

Claims

1. The utility model provides an air-cooled container structure for M3C converter, includes the box, and the box both sides are provided with control cabin (1), reserve module and place cabin (4), its characterized in that: a power cabin (3) is arranged between the control cabin (1) and the standby module placing cabin (4), the power cabin (3) is divided into a front cabin (12) and a rear cabin (16) through an insulating frame (8) between the control cabin (1) and the standby module placing cabin (4), and a power line enters the box body through a lower wire inlet (6) of the rear cabin (16) and is sequentially connected with a bridge arm reactance (5), an alternating current filter capacitor (9) and a power module on the insulating frame (8); a plurality of groups of detachable air inlet assemblies (2) with air filters are arranged at the bottom of the front cabin (12) and correspondingly provided with lower air inlets, and a plurality of fans (7) are arranged on the back plate of the rear cabin (16).

2. An air-cooled container structure for M3C frequency converters as in claim 1, wherein: the bridge arm reactance (5) is provided with a plurality of groups, each 3 groups of bridge arm reactance (5) are connected in series to form a phase, and the phase is correspondingly connected with a three-phase power module arranged on the insulating frame (8) through the alternating current filter capacitor (9).

3. An air-cooled container structure for M3C frequency converters as in claim 1, wherein: the rear side of the power cabin (3) is also provided with a soft starting device (15), the front end of the soft starting device (15) is connected with a frequency division power grid through a power cable, and the rear end of the soft starting device is respectively connected with a three-phase power module through a power busbar.

4. An air-cooled container structure for M3C frequency converters as in claim 1, wherein: the control cabin (1) is provided with a control cabinet (13) and a UPS (uninterrupted power supply) 14 of the control cabinet (13); the control cabinet (13) adopts an independent closed metal cabinet body, and an M3C control cabinet, a relay and a circuit breaker which are connected in series are arranged in the control cabinet body to serve as an M3C frequency converter control protection unit.

5. An air-cooled container structure for M3C frequency converters as in claim 1, wherein: the power line adopts 240mm ² A power cable.

6. An air-cooled container structure for M3C frequency converters as in claim 1, wherein: a plurality of insulating sectional materials (10) perpendicular to the insulating frame are arranged on the insulating frame (8) at intervals, a plurality of parallel guide rails (11) are arranged on each insulating sectional material (10), and power modules are correspondingly arranged between every two adjacent guide rails (11).