CN204271645U - Water Cooling System for Active Compensation Devices - Google Patents

Abstract

The utility model discloses a kind of water-cooling system being applied to active power compensator, it comprises: multiple water-filled radiator, each IGBT device in each water-filled radiator corresponding unit cabinet, and is arranged in corresponding IGBT device; Branch's water inlet pipe, the corresponding branch's water inlet pipe of each unit cabinet, and the water inlet end of water-filled radiator is connected with branch water inlet pipe by water supply hose; Branch out water pipe, corresponding one of each unit cabinet branches out water pipe, and the water side of water-filled radiator by delivery hose with branch out water pipe and be connected; Recirculated cooling water pipeline, described branch's water inlet pipe is connected with the delivery port of recirculated cooling water pipeline, and the described water pipe that branches out is connected with the water inlet of recirculated cooling water pipeline.The utility model can reduce IGBT device greatly because of the overheated power reduction brought, the phenomenon that reliability reduces, and achieves high efficiency and the high power density of IGBT device.

Description

Water Cooling System for Active Compensation Devices

technical field

The utility model relates to a water cooling system applied to an active compensating device, which is suitable for an active filter device connected in parallel with multiple machines.

Background technique

At present, with the gradual improvement of the country's requirements for power system power quality in recent years, the country's demand for power system harmonic control is becoming more and more extensive, and the requirements are also getting higher and higher. At the same time, with the development and promotion of power electronic equipment (especially frequency converters and rectifiers), the power consumption environment is more varied and complex than before. The traditional passive filter device is far from meeting the actual needs. As the most advanced technology in the field of harmonic control, the active compensation device (Active Power FiIter, APF) has also shown a great growth in the market. From the actual In terms of application effect, APF is much higher than PPF products in terms of actual compensation effect and anti-interference ability. However, at this stage, due to the actual needs of high-power electrical equipment such as electrolytic tanks, oxidation tanks, welding, forging, etc., high-current APF applications are becoming more and more extensive, and the heat dissipation of power devices such as IGBTs has received increasing attention. Due to the limitation of the DC side voltage, output current and carrier frequency when the low-voltage and high-current APF works normally, its inverter unit generates high heat. The high-efficiency application of IGBT and heat dissipation have become an important technical key link in the development of APF. Water cooling The system is also becoming more and more common in power electronic equipment, but the water-cooled cooling system for multiple high-current equipment used in parallel at the same time has not been involved.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a water cooling system applied to an active compensation device, which can greatly reduce the power reduction and reliability reduction of IGBT devices due to overheating, and realize Improve the efficiency and high power density of IGBT devices.

The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a water cooling system applied to an active compensation device, which includes:

Multiple water-cooled radiators, each water-cooled radiator corresponds to each IGBT device in the unit cabinet, and is arranged on the corresponding IGBT device;

Branch water inlet pipe, each unit cabinet corresponds to a branch water inlet pipe, and the water inlet end of the water-cooled radiator is connected with the branch water inlet pipe through the water inlet hose;

Branch water outlet pipes, each unit cabinet corresponds to a branch water outlet pipe, and the water outlet end of the water-cooled radiator is connected to the branch water outlet pipes through the water outlet hose;

The circulating cooling water pipeline, the branch water inlet pipe communicates with the water outlet of the circulating cooling water pipeline, and the branch outlet pipe communicates with the water inlet of the circulating cooling water pipeline.

A specific structure of the circulating cooling water pipeline is further provided, the circulating cooling water pipeline has a water inlet main pipe, a water outlet main pipe, a main circulation pump and a heat exchanger, the water outlet main pipe is connected with the water inlet of the main circulation pump, and the outlet of the main circulation pump The water port is connected with the water inlet of the heat exchanger, and the water outlet of the heat exchanger is connected with the water inlet main pipe.

Further, a degassing tank is connected between the main water inlet pipe and the water inlet of the main circulation pump.

Further, in order to manually control the cooling water flow in each unit cabinet, a water inlet ball valve is provided at the connection between the branch water inlet pipe and the water outlet of the circulating cooling water pipeline, and the water inlet of the branch water outlet pipe and the circulating cooling water pipeline The connection is provided with a water outlet ball valve.

Further, in order to automatically adjust the flow rate of cooling water according to the temperature, so as to control the inflow and outflow of water, the water cooling system applied to the active compensation device also includes a control system, the circulating cooling water pipeline is provided with flow valves, and the unit cabinet is provided with Temperature sensor, the signal output end of the temperature sensor is connected with the signal input end of the control system so that the temperature sensor is used to collect the temperature parameters in the corresponding unit cabinet and transmit it to the control system, the signal output end of the control system is connected with the flow valve The control connection allows the control system to control the flow through the flow valve according to the corresponding temperature parameters.

Further, in order to realize the automatic adjustment function of the water temperature in the main water inlet pipe, according to different power and different seasons, the speed control of the heat dissipation actuators in the heat exchanger, such as fans, etc., is used to adjust the water temperature of the water inlet pipe to achieve the best cooling effect , the water cooling system applied to the active compensation device also includes a control system, the water inlet main pipe is provided with a water temperature sensor, the signal output end of the water temperature sensor is connected with the signal input end of the control system, and the signal output end of the control system Controlled connection with heat exchanger.

After the above technical solution is adopted, the cooling water is circulated in the entire water cooling pipeline by using the circulating cooling water pipeline, and the cooling water flows through the water cooling radiator, so that the heat generated on the IGBT components is taken away by the flowing cooling water, and the product is running. If one or some of the unit cabinets fails, the waterway can be disconnected independently, and the fault point can be repaired separately, which will not affect the normal operation of other unit cabinets, so that the damage caused by overheating of IGBT devices can be greatly reduced. The phenomenon of power reduction and reliability reduction has realized the high efficiency and high power density of IGBT devices; in addition, there are independent ball valves in each unit cabinet, which can control the cooling water of each unit cabinet according to different capacity and different output conditions. The flow is manually adjusted, thereby reducing the total amount of ineffective water circulation and reducing the overall power consumption of the water cooling system. The role of the water inlet and outlet hoses is to better integrate the water pipes and radiator units, which is convenient for installation and maintenance.

Description of drawings

Fig. 1 is the perspective view in each unit cabinet of the water cooling system applied to the active compensation device of the present invention;

Fig. 2 is a pipeline connection diagram of a circulating cooling water pipeline;

FIG. 3 is a schematic structural diagram of an IGBT device.

Detailed ways

In order to make the content of the utility model more clearly understood, the utility model will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, a water cooling system applied to an active compensation device includes:

A plurality of water-cooled radiators 1, each water-cooled radiator 1 corresponds to each IGBT device 2 in the unit cabinet, and is arranged on the corresponding IGBT device 2;

Branch water inlet pipe 41, each unit cabinet corresponds to a branch water inlet pipe 41, and the water inlet end of the water-cooled radiator 1 is connected with the branch water inlet pipe 41 through the water inlet hose 31;

A branched water pipe 42, each unit cabinet corresponds to a branched water pipe 42, and the water outlet end of the water-cooled radiator 1 communicates with the branched water pipe 42 through the water outlet hose 32;

In the circulating cooling water pipeline, the branch water inlet pipe 41 is connected with the water outlet of the circulating cooling water pipeline, and the branch water outlet pipe 42 is connected with the water inlet of the circulating cooling water pipeline.

As shown in Figure 2, the circulating cooling water pipeline has a water inlet main pipe 5, a water outlet main pipe 6, a main circulation pump 8 and a heat exchanger 9, the water outlet main pipe 5 is connected with the water inlet of the main circulation pump 8, and the outlet of the main circulation pump 8 The water port communicates with the water inlet of the heat exchanger 9 , and the water outlet of the heat exchanger 9 communicates with the water inlet main pipe 5 .

As shown in FIG. 2 , a degassing tank 10 is connected between the main water inlet pipe 5 and the water inlet of the main circulation pump 8 .

As shown in Figure 1, a water inlet ball valve 71 is provided at the connection between the branch water inlet pipe 41 and the water outlet of the circulating cooling water pipeline, and a water outlet ball valve is provided at the connection between the branch water outlet pipe 42 and the water inlet of the circulating cooling water pipeline 72.

The water cooling system applied to the active compensation device also includes a control system, a flow valve 11 is arranged in the circulating cooling water pipeline, a temperature sensor is arranged in the unit cabinet, and the signal output end of the temperature sensor is connected with the signal input end of the control system so as to The temperature sensor is used to collect the temperature parameters in the corresponding unit cabinets and transmit them to the control system. The signal output end of the control system is connected to the flow valve 11 so that the control system can control the flow of the flow valve 11 according to the corresponding temperature parameters.

The water cooling system applied to the active compensation device also includes a control system, a water temperature sensor is arranged in the water inlet pipe 5, the signal output end of the water temperature sensor is connected with the signal input end of the control system, and the signal output end of the control system is connected with the heat exchange 9-phase control connections.

As shown in Figure 3, the design of the radiator in the unit cabinet of the utility model combines information such as the distribution of transistors inside the two IGB devices and the distribution of high-temperature points in thermal simulation. Reliability, but also to ensure the effectiveness of temperature collection.

The working principle of the utility model is as follows:

The circulating cooling water pipeline circulates the cooling water in the entire water-cooling pipeline, and the cooling water flows through the water-cooling radiator 1, so that the heat generated on the IGBT component 2 is taken away by the flowing cooling water. During the operation of the product, one or If some unit cabinets fail, the waterway can be disconnected independently, and the fault point can be repaired separately, which will not affect the normal operation of other unit cabinets, so that the power reduction caused by overheating of the IGBT device 2 can be greatly reduced, and reliable In addition, there is an independent ball valve in each unit cabinet, which can manually control the cooling water flow of each unit cabinet according to different capacity and different output conditions. Adjustment, thereby reducing the total amount of ineffective water circulation and reducing the overall power consumption of the water cooling system. The role of the water inlet and outlet hoses is to better integrate the water pipes and radiator units, which is convenient for installation and maintenance.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the utility model in detail. It should be understood that the above descriptions are only specific embodiments of the utility model and are not intended to be used To limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (6)

1. A water cooling system applied to an active compensation device, characterized in that it comprises: A plurality of water-cooled radiators (1), each water-cooled radiator (1) corresponds to each IGBT device (2) in the unit cabinet, and is arranged on the corresponding IGBT device (2); Branch water inlet pipe (41), each unit cabinet corresponds to a branch water inlet pipe (41), and the water inlet end of the water-cooled radiator (1) is connected with the branch water inlet pipe (41) through the water inlet hose (31); A branched water pipe (42), each unit cabinet corresponds to a branched water pipe (42), and the water outlet end of the water-cooled radiator (1) communicates with the branched water pipe (42) through the water outlet hose (32); The circulating cooling water pipeline, the branch water inlet pipe (41) communicates with the water outlet of the circulating cooling water pipeline, and the branch outlet pipe (42) communicates with the water inlet of the circulating cooling water pipeline. 2. The water cooling system applied to the active compensation device according to claim 1, characterized in that: the circulating cooling water pipeline has a water inlet main pipe (5), a water outlet main pipe (6), a main circulation pump (8) And the heat exchanger (9), the water outlet main pipe (5) is connected with the water inlet of the main circulation pump (8), and the water outlet of the main circulation pump (8) is connected with the water inlet of the heat exchanger (9), and the heat exchange The water outlet of device (9) is communicated with water inlet main pipe (5). 3. The water cooling system applied to an active compensation device according to claim 2, characterized in that: a degassing tank ( 10). 4. The water cooling system applied to the active compensation device according to claim 1, 2 or 3, characterized in that: the junction of the branch water inlet pipe (41) and the water outlet of the circulating cooling water pipeline is provided with an inlet A water ball valve (71), a water outlet ball valve (72) is arranged at the connection between the branch outlet pipe (42) and the water inlet of the circulating cooling water pipeline. 5. The water-cooling system applied to an active compensation device according to claim 1, 2 or 3, characterized in that: it also includes a control system, a flow valve (11) is arranged in the circulating cooling water pipeline, and the unit cabinet A temperature sensor is installed inside, and the signal output end of the temperature sensor is connected to the signal input end of the control system so that the temperature sensor is used to collect the temperature parameters in the corresponding unit cabinet and transmit it to the control system. The signal output end of the control system is connected to the control system. The flow valve (11) is connected for control so that the control system controls the flow rate of the flow valve (11) according to the corresponding temperature parameters. 6. The water cooling system applied to an active compensation device according to claim 2 or 3, characterized in that: it also includes a control system, a water temperature sensor is arranged in the water inlet main pipe (5), and the signal output of the water temperature sensor The terminal is connected with the signal input terminal of the control system, and the signal output terminal of the control system is connected with the heat exchanger (9) for control.