Internal circulation integrated water source cooling unit of special cabinet for frequency conversion

Abstract

The utility model belongs to the technical field of frequency converter cooling and heat dissipation, and provides a frequency conversion special cabinet internal circulation integrated water source cooling unit which comprises a water source cooling unit combined with a frequency converter cabinet, a hot air outlet is formed in the top of the frequency converter cabinet, and a hot air inlet is formed in one side of the top of the water source cooling unit. A fan cover used for covering the hot air outlet and the hot air inlet is arranged on the top of the frequency converter cabinet and the water source cooling unit which are arranged in a combined cabinet mode, and an air outlet communicated with the frequency converter cabinet is formed in the combined cabinet face of the water source cooling unit. According to the utility model, the combined cabinet surface of the water source cooling unit is provided with the air outlet communicated with the frequency converter cabinet, hot air is cooled by the water source cooling unit and then is changed into cold air which is directly conveyed into the frequency converter body cabinet from the air outlet, so that a cooling mode of circulation in the cabinet is realized, the influence factors of the environment are reduced, and the refrigeration and heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of frequency converter cooling and heat dissipation, and specifically relates to an integrated water source cooling unit with internal circulation in a special frequency conversion cabinet. Background Art

[0002] In the prior art, the heat dissipation solution for the inverter mainly uses outdoor water source units for heat dissipation and cooling. However, the outdoor water source cooling unit requires the entire equipment to be installed outdoors. At the same time, it is necessary to manufacture an outdoor installation unit, manufacture more air ducts to connect with the inverter, and then lay cooling water supply and return pipes. Not only is the construction period long, but the construction volume is large and the cost is high. On the other hand, the prior art mostly adopts an external cabinet circulation method, which is affected by the external cabinet environment and has poor refrigeration and heat dissipation efficiency. Utility Model Content

[0003] The utility model aims to provide a frequency conversion cabinet internal circulation integrated water source cooling unit to solve the technical problems existing in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A water source cooling unit with internal circulation and integration for a special frequency conversion cabinet comprises a water source cooling unit arranged in parallel with a frequency converter cabinet, the top of the frequency converter cabinet being a hot air outlet, a hot air inlet being arranged on one side of the top of the water source cooling unit, a wind hood for covering the hot air outlet and the hot air inlet being arranged on the top of the frequency converter cabinet and the water source cooling unit arranged in parallel, and an air outlet connected to the frequency converter cabinet being arranged on the parallel cabinet surface of the water source cooling unit.

[0006] Furthermore, the water source cooling unit includes a unit shell, an evaporator arranged on one side of the unit shell, a compressor and a condenser arranged on the bottom of the unit shell, the hot air inlet is arranged on one side of the upper end of the unit shell, and the air outlet is arranged on the end surface where the unit shell is connected to the inverter cabinet and corresponds to the position of the evaporator.

[0007] Furthermore, a plurality of cabinet connecting members are arranged at intervals along the height direction on both sides of the end surface where the unit housing and the inverter cabinet are connected, and through holes are arranged on the cabinet connecting members.

[0008] Furthermore, an inner flange connector is provided at the air outlet, and the air outlet is connected to the inverter cabinet through the inner flange connector.

[0009] Furthermore, the condenser is connected with a water inlet interface and a water outlet interface, and the water inlet interface and the water outlet interface are located at the rear end of the unit shell.

[0010] Furthermore, a docking flange is provided at the hot air inlet, and the wind hood is connected to the hot air inlet via the docking flange.

[0011] Furthermore, a humidity sensor is provided at the hot air inlet; and temperature sensors are provided at the water inlet interface and the water outlet interface.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) The utility model adopts an integrated water source cooling unit, which is an integral structure and is installed in parallel with the inverter cabinet. The heat generated by the inverter operation is transported to the integrated water source cooling unit through the shared wind hood on the top of the cabinet. After the equipment arrives at the site, it can be powered on and water can be used. The project construction period is short and controllable. There is no need to make a large number of air ducts to connect the inverter and the cooling equipment, and the cost is low.

[0014] (2) The utility model provides an air outlet connected to the inverter cabinet on the cabinet surface of the water source cooling unit. After the hot air is cooled by the water source cooling unit, it becomes cold air and is directly transported to the inverter cabinet from the air outlet, thereby realizing a cooling mode of circulation within the cabinet, reducing the impact of environmental factors and improving the refrigeration and heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the application state of the utility model.

[0016] Figure 2 for Figure 1 AA direction schematic diagram.

[0017] Figure 3 It is a schematic diagram of the external structure of the water source cooling unit in the utility model.

[0018] Figure 4 The internal structure of the water source cooling unit of the utility model is shown in FIG. Figure 1 .

[0019] Figure 5 The internal structure of the water source cooling unit of the utility model is shown in FIG. Figure 2 .

[0020] Figure 6 It is a structural schematic diagram of the cabinet connecting piece in the utility model.

[0021] Among them, the names corresponding to the figure marks are as follows: 1-inverter cabinet, 2-water source cooling unit, 3-hot air outlet, 4-hot air inlet, 5-wind hood, 6-air outlet, 7-unit housing, 8-evaporator, 9-compressor, 10-condenser, 11-cabinet connector, 12-through hole, 13-inner flange connector, 14-water inlet interface; 15-water outlet interface; 16-docking flange; 17-cabinet surface. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to have a clearer understanding and knowledge of the present invention, the present invention is further described in detail in conjunction with the following embodiments. It should be noted that the specific embodiments described below are only used to explain the present invention and facilitate understanding. The technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the protection scope of the present invention.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the disclosure of this application shall have the usual meanings understood by persons with ordinary skills in the field to which the disclosure belongs. The words "include" or "comprise" and the like used in this application mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The positional relationship words "upper", "lower", "left", "right", "front", "back", etc. are determined according to the layout direction of the drawings in the specification, and are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example

[0025] like Figures 1 to 6 As shown, this embodiment provides an integrated water source cooling unit for in-cabinet circulation in a frequency conversion special cabinet, and its design principle is: according to the cabinet structure and operating characteristics of the high-voltage frequency converter, the frequency converter cabinet body and the water source cooling unit are designed as an integrated whole, and the water source cooling unit is installed in parallel with the frequency converter cabinet, and the bottom of the water source cooling unit is fixed with channel steel; an air outlet connected to the frequency converter cabinet is provided on the parallel cabinet surface of the water source cooling unit, and through the setting of the parallel cabinet surface air outlet, the cold air cooled by the water source cooling unit is directly transported from the air outlet to the frequency converter cabinet body, so as to realize the cooling mode of in-cabinet circulation. It should be noted that, according to actual application needs, a group of frequency converter cabinets can use multiple water source cooling units to be installed in parallel with the frequency converter cabinet to improve the cooling and heat dissipation effect.

[0026] The top of the inverter cabinet is the hot air outlet, and a hot air inlet is arranged on one side of the top of the water source cooling unit. In order to collect hot air, in this embodiment, a wind hood for covering the hot air outlet and the hot air inlet is arranged on the top of the inverter cabinet and the water source cooling unit arranged in parallel cabinets. The wind hood adopts a rectangular hood-like structure with an open lower end and a hollow middle. One wind hood covers the hot air outlets of all inverter cabinets and the hot air inlet of the water source cooling unit, and the hot air generated by the inverter cabinet is introduced into the water source cooling unit through the wind hood; a docking flange is arranged at the hot air inlet of the water source cooling machine, and the wind hood is connected to the hot air inlet through the docking flange.

[0027] In this embodiment, the water source cooling unit includes a unit housing, an evaporator arranged on one side of the unit housing, a compressor and a condenser arranged at the bottom of the unit housing, a hot air inlet arranged on one side of the upper end of the unit housing, an air outlet arranged on the end face where the unit housing is connected to the inverter cabinet and corresponds to the position of the evaporator, and an expansion valve (not shown in the figure) is also arranged between the evaporator and the condenser; the condenser is connected with a water inlet interface and a water outlet interface, and the water inlet interface and the water outlet interface are located at the rear end of the unit housing, and an external water pipe is connected through the water inlet interface and the water outlet interface to realize the water inlet and water outlet of the water source cooling unit. In order to facilitate the monitoring of the operation of the equipment, a humidity sensor is arranged at the hot air inlet in this embodiment; and a temperature sensor is arranged at both the water inlet interface and the water outlet interface.

[0028] The refrigeration principle of the water source cooling unit is as follows: the main function of the compressor is to compress and transport power, turning low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant; the condenser turns high-temperature and high-pressure gaseous refrigerant into low-temperature and high-pressure liquid refrigerant, the expansion valve turns low-temperature and high-pressure liquid refrigerant into low-temperature and low-pressure liquid refrigerant, and the evaporator turns low-temperature and low-pressure liquid refrigerant into low-temperature and low-pressure gaseous refrigerant, absorbing heat to provide cold air indoors, and finally returns to the compressor to form a complete refrigeration cycle. The water source cooling unit is connected to an external power supply, and at the same time, a control panel / control box can be configured to control the equipment (such as starting and stopping the equipment).

[0029] The unit housing and the inverter cabinet are connected in parallel, and the connection structure is as follows: a number of parallel cabinet connectors are arranged at intervals along the height direction on both sides of the end surface where the unit housing and the inverter cabinet are connected in parallel, and through holes are arranged on the parallel cabinet connectors. The cabinet housing and the inverter cabinet are connected by parallel cabinet connectors and bolts.

[0030] In this embodiment, the cabinet surface of the unit shell is a flat structure, and an inner flange connector is provided at the air outlet of the cabinet surface. The air outlet is connected to the inverter cabinet through the inner flange connector; the cooled cold air directly enters the inverter cabinet from the air outlet, thereby reducing the impact of the inverter room environment on the cold air and improving the cooling and heat dissipation efficiency of the inverter.

[0031] In practical applications, the relevant parameter configuration of the water source cooling unit is as follows:

[0032] 1. Scheme configuration: 1 2800KVA high-voltage inverter (drive motor power 2250K, maximum operating heat generation 90) is configured with 1 unit itself; 2. Inlet and outlet air circulation mode: water source cooling unit top air inlet (hot air), side (cabinet surface) front compartment air outlet (cold air); 3. Inlet and outlet water interface direction: behind the water source cooling unit cabinet; 4. Unit size (I*HH): FI SLG)-30B / 4 unit: 11700+1700*H26001 (flush with the inverter height); 5. Unit basic gas installation: installed in parallel with the inverter, fixed with bottom channel steel; 6. Cooling water requirements: PE-7 industrial water or other water sources after precipitation and filtration, the water should be free of impurities and corrosive chemicals (chloride ion content <250mg / ), water inlet temperature ≤32 degrees, water pressure ≥0.2pa (within 0.5pa); 7. Unit water consumption: required for operation The cooling water volume is 21-3 / h; 8. Installed capacity of the unit: three-phase five-wire, 380VAC, 36.8 (operating power consumption is automatically adjusted in the range of 9.2~36.8 according to the actual load); 9. Weight of a single unit (estimated): 1000EG; 10. Cooling effect: When the cooling water parameter requirements are met, the temperature inside the inverter cabinet can be set within the range of 20~301 when the inverter port is running at load, ensuring that the inverter operates at an ambient temperature of 26℃ for a long time, which is more beneficial to improving the stability of the inverter equipment.

[0033] The above is the preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the design principle and technical solution of the present invention, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. A frequency conversion cabinet internal circulation integrated water source cooling unit, characterized by: The invention comprises a water source cooling unit (2) arranged in parallel with a frequency converter cabinet (1), the top of the frequency converter cabinet (1) being a hot air outlet (3), a hot air inlet (4) being arranged on one side of the top of the water source cooling unit (2), a wind hood (5) for covering the hot air outlet (3) and the hot air inlet (4) being arranged on the top of the frequency converter cabinet (1) and the water source cooling unit (2) arranged in parallel, and an air outlet (6) communicating with the frequency converter cabinet (1) being arranged on the parallel cabinet surface (17) of the water source cooling unit (2).

2. The frequency conversion cabinet internal circulation integrated water source cooling unit according to claim 1 is characterized in that: The water source cooling unit (2) comprises a unit casing (7), an evaporator (8) arranged on one side of the unit casing (7), a compressor (9) and a condenser (10) arranged at the bottom of the unit casing (7), the hot air inlet (4) being arranged on one side of the upper end of the unit casing (7), and the air outlet (6) being arranged on the end surface of the unit casing (7) connected to the inverter cabinet (1) and corresponding to the position of the evaporator (8).

3. The frequency conversion cabinet internal circulation integrated water source cooling unit according to claim 2 is characterized in that: A plurality of cabinet connecting members (11) are arranged at intervals along the height direction on both sides of the end surface where the unit housing (7) and the inverter cabinet (1) are connected in cabinet, and through holes (12) are arranged on the cabinet connecting members (11).

4. The frequency conversion cabinet internal circulation integrated water source cooling unit according to claim 3 is characterized in that: An inner flange connection piece (13) is provided at the air outlet (6), and the air outlet (6) is connected to the frequency converter cabinet (1) via the inner flange connection piece (13).

5. The frequency conversion cabinet internal circulation integrated water source cooling unit according to claim 4 is characterized in that: The condenser (10) is connected to a water inlet interface (14) and a water outlet interface (15), and the water inlet interface (14) and the water outlet interface (15) are located at the rear end of the unit casing (7).

6. The frequency conversion cabinet internal circulation integrated water source cooling unit according to claim 5 is characterized in that: A docking flange (16) is provided at the hot air inlet (4), and the wind cover (5) is connected to the hot air inlet (4) via the docking flange (16).

7. The frequency conversion cabinet internal circulation integrated water source cooling unit according to claim 6 is characterized in that: A humidity sensor is provided at the hot air inlet (4); and temperature sensors are provided at the water inlet interface (14) and the water outlet interface (15).

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