CN218788730U

CN218788730U - Special water-cooling frequency converter for two-stage compressor

Info

Publication number: CN218788730U
Application number: CN202320271350.6U
Authority: CN
Inventors: 马红军; 李星石; 刘静
Original assignee: CHENGDU HOPE ELECTRONIC INST C
Current assignee: CHENGDU HOPE ELECTRONIC INST C
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-04-04
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a special water-cooling converter of doublestage compressor, including the cabinet body, transformer module, inlet wire isolated system, rectification contravariant module, human-computer interaction interface, each module independently sets up respectively internally in the cabinet. The incoming line isolation system and the transformer module are positioned on the front side of the cabinet body, the rectification inversion module is positioned on the back side of the cabinet body, and the transformer module, the incoming line isolation system and the rectification inversion module are separated by a sealing plate; the human-computer interaction interface is arranged on the left side cabinet door of the cabinet body. The rectification inversion module of the utility model adopts independent modular design, expands the capacity of the frequency converter system according to different application occasions, and is convenient for later maintenance; the rectification inversion module effectively reduces the temperature rise of internal components in a water-cooling heat dissipation mode, and improves the reliability of equipment; the water-cooling pipeline and the cable are separately and independently arranged, so that the influence of pipeline leakage on the safety of the equipment is avoided.

Description

Special water-cooling frequency converter for two-stage compressor

Technical Field

The utility model belongs to a converter field of making, concretely relates to special water-cooling converter of doublestage compressor.

Background

Along with the deepening of the national 'double-carbon' economy, the high-efficiency energy-saving air compressor is widely applied to the market in recent years, wherein a two-stage permanent magnet variable-frequency air compressor system gradually becomes a mainstream product in the industry. The existing double-stage air compressor frequency converter generally adopts a heat exchange mode of sucking external cold air into the frequency converter for cooling, but has very limited heat dissipation efficiency aiming at partial high-power double-stage air compressor equipment. Meanwhile, when the air input of the equipment is increased, a plurality of frequency conversion devices are needed to drive the air compressor respectively, so that the equipment cost and the use cost of a user are increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a special water-cooling converter of doublestage compressor has that heat dispersion is good, fail safe nature is high, maintains characteristics such as facility. In addition, the frequency conversion system of the double-stage compressor adopts an independent modular design in the overall system scheme, and the capacity expansion requirement of the frequency conversion system can be met aiming at different application occasions.

The utility model adopts the technical proposal that:

a special water-cooled frequency converter for a two-stage compressor comprises a cabinet body, an incoming line isolation system, a transformer module, a rectification inversion module and a human-computer interaction interface. The cabinet body is internally provided with a sealing plate to divide the cabinet body into 3 parts, wherein the incoming line isolation system, the transformer module and the rectification inversion module are respectively and independently arranged in the cabinet body, the incoming line isolation system and the transformer module are positioned on the front side of the cabinet body, the rectification inversion module is positioned on the back side of the cabinet body, and the transformer module, the incoming line isolation system and the rectification inversion module are separated by the sealing plate; the human-computer interaction interface is arranged on the left cabinet door of the cabinet body.

Furthermore, the rectification inversion module comprises a water-cooling rectification unit, a water-cooling inversion unit, a direct-current reactor, a circuit breaker, a direct-current busbar, a water-cooling pipeline, a waterproof partition board and an insulating partition board. The water-cooling rectification units and the water-cooling inversion units are arranged left and right, the number of the water-cooling rectification units and the number of the water-cooling inversion units are adjusted along with the capacity of the frequency converter, and independent water-cooling pipelines are respectively adopted for heat dissipation; the water-cooling inversion units are connected in parallel through the direct-current busbar, and the bottom of each water-cooling inversion unit is provided with a roller.

The water-cooling pipeline is connected out from the bottoms of the water-cooling rectification unit and the water-cooling inversion unit, is arranged at the back of the waterproof partition plate and the bottom of the insulating partition plate, and is connected with a direct pipe joint at the bottom of the cabinet body and an external cooling circulating water pipe network; the output cable is positioned on the upper part of the insulating partition plate and in front of the waterproof partition plate and is spatially separated from the water-cooling pipeline.

Furthermore, the transformer module comprises a transformer air duct plate, and an air-cooling heat dissipation channel is formed by the transformer air duct plate, the cabinet body, the sealing plate and the centrifugal fan.

Further, the top of the cabinet body is connected with a centrifugal fan. The lower part is provided with an inlet and outlet line mounting plate and a straight-through pipe joint, and the straight-through pipe joint is arranged outside the frequency converter cabinet body and is connected with a water supply pipe and a water return pipe of a circulating water pipe network.

Furthermore, the inlet wire isolation system is arranged inside the cabinet body as an optional matching module and comprises an input copper part, an isolation disconnecting link and a vacuum contactor.

Compared with the prior art, the utility model has the advantages of as follows: the water-cooling heat dissipation energy effectively reduces the temperature rise of components and improves the reliability of equipment; the capacity expansion and later maintenance of the frequency converter system are facilitated by adopting an independent modular design; the water-cooling pipeline and the cable are independently arranged, so that the use safety of the equipment can be guaranteed.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic front view of a water-cooled inverter dedicated for a two-stage compressor;

FIG. 2 is a three-dimensional schematic diagram of a water-cooled frequency converter dedicated for a two-stage compressor;

FIG. 3 is a schematic diagram of the internal arrangement of a water-cooled inverter dedicated to a two-stage compressor;

fig. 4 is a schematic flow diagram of a heat dissipation channel of a water-cooled frequency converter dedicated for a two-stage compressor.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings and embodiments so that those skilled in the art can understand the invention, it should be understood, however, that the invention is not limited to the scope of the embodiments, and that various changes will become apparent to those skilled in the art when they come within the spirit and scope of the invention as defined and defined in the appended claims, all of which are intended to be protected by the present invention.

As shown in fig. 1-4, the utility model provides a pair of special water-cooling converter of double stage compressor includes the cabinet body 1, inlet wire isolated system 2, transformer module 3, rectification contravariant module 4, human-computer interaction interface 5. A sealing plate 11 is arranged in the cabinet body 1 to divide the cabinet body 1 into 3 parts, an incoming line isolation system 2, a transformer module 3 and a rectification inversion module 4 are respectively and independently arranged in the cabinet body 1, and the incoming line isolation system 2 and the transformer module 3 are positioned on the front side of the cabinet body 1 and are arranged on the left and right sides; the rectification inversion module 4 is positioned on the back of the cabinet body 1, and the transformer module 3, the incoming line isolation system 2 and the rectification inversion module 4 are separated by a sealing plate 11; the human-computer interaction interface 5 is arranged on a left cabinet door 14 of the cabinet body 1, and the human-computer interaction interface 5 and the rectification inversion module 4 are separated by the insulating baffle 12, so that strong current and weak current are isolated.

As shown in fig. 3, the rectification inverter module 4 includes a water-cooling rectification unit 6, a water-cooling inverter unit 7, a dc reactor 8, a circuit breaker 9, a dc bus bar 10, a water-cooling pipeline 19, a waterproof partition 20, and an insulating partition 21. The water-cooling rectification unit 6 and the water-cooling inversion unit 7 are independently arranged left and right, the number of the water-cooling rectification unit and the number of the water-cooling inversion unit can be adjusted along with the capacity of the frequency converter, the water-cooling rectification unit and the water-cooling inversion unit are respectively cooled by using independent water-cooling pipelines 19, the water-cooling inversion unit 7 is connected in parallel through a top direct current busbar 10, and rollers are arranged at the bottom of the water-cooling inversion unit, so that assembly and later maintenance are facilitated. The circuit breaker 9 is located the water-cooling rectification unit 6 below, and the dc reactor 8 is located the water-cooling rectification unit 6 top, and dc reactor 8 and water-cooling rectification unit 6 are connected in parallel with water-cooling inverter unit 7 through female 10 of arranging of direct current.

The rectification inversion module 4 adopts water cooling heat dissipation, wherein a water cooling pipeline 19 is connected out from the bottoms of the water cooling rectification unit 6 and the water cooling inversion unit 7 and is arranged at the back of the waterproof partition plate 20 and the bottom of the insulating partition plate 21, and an output cable is arranged at the upper part of the insulating partition plate 21 and in front of the waterproof partition plate 20; the water cooled pipes 19 are spatially separated from the cables inside the cabinet to ensure equipment safety. A straight-through pipe joint 22 is arranged at the lower part of the cabinet body 1, and the straight-through pipe joint 22 is arranged outside the frequency converter cabinet body 1 and is connected with a water supply pipe and a water return pipe of a circulating water pipe network; the external cooling circulating water is communicated with the water cooling pipeline 19 in the cabinet body 1 through a pipe joint 22 at the lower part of the cabinet body 1, and the cooling circulating water respectively flows through the water cooling rectification unit 6 and the water cooling inversion unit 7 to take away heat generated by components in the unit.

The incoming line isolation system 2 is arranged inside the cabinet body 1 as an optional matching module and comprises an input copper part 15, an isolation switch 16 and a vacuum contactor 17. The isolation switch 16 and the vacuum contactor 17 are connected in series through a cable or a copper bar, and the operation positions are all positioned on the front surface of the cabinet body 1. The input cable is connected with an input copper piece 15 and an isolation switch 16 through a wire inlet and outlet mounting plate 13 at the bottom of the right side of the cabinet body 1; the output cable is connected with the output copper piece at the bottom of the water-cooling inversion unit 7 through the wire inlet and outlet mounting plate 13 at the bottom of the cabinet body 1.

As shown in fig. 4, the transformer module 3 adopts air cooling to dissipate heat, and includes a transformer air duct plate 23, which forms an air cooling heat dissipation channel with the cabinet 1, the sealing plate 11, and the centrifugal fan 18. Air is blown outwards through the top centrifugal fan 18 to drive air to form negative pressure inside the cabinet body 1, so that the air is forced to enter the cabinet body 1 from the cabinet door filter screens on the two sides, but due to the blocking of the transformer air duct plate 23 and the closing plate 11, the air can only enter the transformer heat dissipation air duct through the bottom of the transformer module 3 to take away the heat inside the transformer heat dissipation air duct.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications and improvements based on the above embodiments, and these should all fall within the scope of the present invention.

Claims

1. A water-cooled frequency converter special for a two-stage compressor comprises a cabinet body (1), an incoming line isolation system (2), a transformer module (3), a rectification inversion module (4) and a human-computer interaction interface (5); the method is characterized in that: the incoming line isolation system (2) and the transformer module (3) are positioned on the front side of the cabinet body (1), the rectification inversion module (4) is positioned on the back side of the cabinet body (1), and the transformer module (3), the incoming line isolation system (2) and the rectification inversion module (4) are separated from each other by the sealing plate (11); the human-computer interaction interface (5) is arranged on a left cabinet door (14) of the cabinet body (1).

2. The water-cooled frequency converter special for the two-stage compressor as claimed in claim 1, wherein: the rectification inversion module (4) comprises a water-cooling rectification unit (6), a water-cooling inversion unit (7), a direct current reactor (8), a circuit breaker (9), a direct current bus (10), a water-cooling pipeline (19), a waterproof partition plate (20) and an insulating partition plate (21); the water-cooling rectification unit (6) and the water-cooling inversion unit (7) are arranged left and right, the number of the water-cooling rectification unit and the water-cooling inversion unit is adjusted along with the capacity of the frequency converter, and independent water-cooling pipelines (19) are respectively adopted for heat dissipation; the water-cooling inversion units (7) are connected in parallel through a direct current bus (10), and rollers are arranged at the bottoms of the water-cooling inversion units; the water-cooling pipeline (19) is connected out from the bottoms of the water-cooling rectification unit (6) and the water-cooling inversion unit (7), is arranged at the back of the waterproof partition plate (20) and the bottom of the insulating partition plate (21), and is connected with a straight-through pipe joint (22) at the bottom of the cabinet body (1) and an external cooling circulating water pipe network; the output cable is positioned on the upper part of the insulating partition plate (21), and is spatially separated from the water cooling pipeline (19) in front of the waterproof partition plate (20).

3. The water-cooled frequency converter special for the two-stage compressor as claimed in claim 1, wherein: the transformer module (3) comprises a transformer air duct plate (23) which forms an air cooling heat dissipation channel with the cabinet body (1), the sealing plate (11) and the centrifugal fan (18).

4. The water-cooled frequency converter special for the two-stage compressor as claimed in claim 1, wherein: the top of the cabinet body (1) is connected with a centrifugal fan (18); the lower part is provided with an inlet and outlet mounting plate (13) and a straight-through pipe joint (22), and the straight-through pipe joint (22) is arranged outside the frequency converter cabinet body (1) and is connected with a circulating water pipe network water supply pipe and a water return pipe.

5. The water-cooled frequency converter special for the two-stage compressor as claimed in claim 1, wherein: the incoming line isolation system (2) comprises an input copper part (15), an isolation switch (16) and a vacuum contactor (17); the incoming line isolation system (2) is arranged inside the cabinet body (1) as an optional module.