Integrated water source cooling unit for external air circulation cooling and heat dissipation of special cabinet for frequency conversion

Abstract

The utility model belongs to the technical field of frequency converter cooling and heat dissipation, and provides an integrated water source cooling unit for external air circulation cooling and heat dissipation of a special frequency conversion cabinet, which comprises an integrated water source cooling unit and a cabinet top shared fan cover, one end of the cabinet top sharing fan cover covers the top of the integrated water source cooling unit, and the other end covers the top of the frequency converter cabinet; the integrated water source cooling unit comprises a unit shell, an evaporator arranged at the upper end of the unit shell, a condenser arranged on one side of the bottom end of the unit shell, a compressor and a gas-liquid separator arranged on the other side of the bottom end of the unit shell, and an air duct arranged in the middle of the unit shell. According to the utility model, the integrated water source cooling unit and the frequency converter cabinet are integrally installed in a cabinet combination manner, and butt-joint interfaces such as an installation base, an air inlet and an air outlet of the integrated water source cooling unit can be completed before leaving a factory, so that the workload of field engineering construction is reduced, and the installation is simple and convenient.

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 for cooling and heat dissipation of wind circulation outside a special frequency converter cabinet. Background Art

[0002] At present, the cooling methods for solving the on-site operating environment of the inverter mainly include: direct exhaust, indoor air conditioning, outdoor air-water cooling, outdoor water source unit heat dissipation, pure water cooling, etc. Among them, direct exhaust and indoor air conditioning are rarely used. In the existing technology, outdoor water source units and other solutions are mainly used to solve the cooling of the on-site operating environment of the inverter; however, the outdoor water source cooling unit requires the entire equipment to be installed outdoors. At the same time, it is necessary to make an outdoor installation unit, make more air ducts to connect with the inverter, and then lay the cooling water supply and return pipes. Not only is the construction period long, but the construction volume is large and the cost is high. Utility Model Content

[0003] The utility model aims to provide an integrated water source cooling unit for cooling and heat dissipation by wind circulation outside a frequency conversion special cabinet, so as 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] An integrated water source cooling unit for external wind circulation cooling and heat dissipation of a frequency conversion cabinet comprises an integrated water source cooling unit installed in parallel with a frequency converter cabinet and a shared wind hood on the cabinet top, wherein one end of the shared wind hood on the cabinet top covers the top of the integrated water source cooling unit, and the other end covers the top of the frequency converter cabinet; the integrated water source cooling unit comprises a unit shell, an evaporator arranged at the upper end of the unit shell, a condenser arranged on one side of the bottom end of the unit shell, a compressor and a gas-liquid separator on the other side, and an air duct arranged in the middle of the unit shell; a water outlet interface and a water inlet interface are arranged on the condenser, the water outlet interface is connected to a drain pipe, and the water inlet interface is connected to an inlet pipe.

[0006] Furthermore, the upper end of the unit casing is open and constitutes the return air end of the integrated water source cooling unit, and an inlet air docking flange for connecting to the shared air hood on the cabinet top is provided at its end.

[0007] Furthermore, the front end surface or the rear end surface of the unit housing is configured as an air outlet.

[0008] Furthermore, the shared air hood on the cabinet top is a hollow rectangular hood-like structure with an open lower end, one end of which is connected to the return air end of the integrated water source cooling unit through the inlet air docking flange, and the rest of the hood covers the top of the inverter cabinet.

[0009] Furthermore, the evaporator adopts a V-shaped interface structure, with its larger end facing the top of the unit shell.

[0010] Furthermore, a humidity sensor is provided at the inlet air docking flange; a water outlet temperature sensor is provided at the water outlet interface; and a water inlet temperature sensor is provided at the water inlet interface.

[0011] Furthermore, a water inlet main valve, a filter, a water inlet pressure gauge and a water inlet temperature gauge are sequentially arranged on the water inlet pipe along the water inlet direction.

[0012] Furthermore, a drainage temperature gauge, a drainage pressure gauge and a drainage main valve are sequentially arranged on the drainage pipe along the drainage direction.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (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. Different from the common heat dissipation method of the prior art, it is closely integrated with the inverter and is solidified after the equipment is assembled and debugged before leaving the factory. Therefore, after arriving at the site, it can be powered on and water can be used. The project construction period is short and controllable, eliminating the need to use outdoor cooling and heat dissipation methods to make more air ducts to connect the inverter and cooling equipment, and then lay cooling water supply and return pipes. The equipment installation and delivery operation period is shortened by 1 / 3.

[0015] (2) The utility model fully considers the unit structure of the inverter cabinet and adopts an integrated water source cooling unit and an inverter cabinet to be installed in an integrated manner. The installation foundation, air inlet and outlet and other docking interfaces of the integrated water source cooling unit can be completed before leaving the factory, which reduces the workload of on-site engineering construction and makes installation simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the application state of the utility model.

[0017] Figure 2 It is a side schematic diagram of the utility model in application state.

[0018] Figure 3 It is a schematic diagram of the water inlet and outlet connection of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the utility model.

[0020] Figure 5 It is a schematic diagram of the internal structure of the integrated water source cooling unit in the utility model.

[0021] Figure 6 It is a side schematic diagram of the integrated water source cooling unit in the utility model.

[0022] Among them, the names corresponding to the reference numerals are as follows: 1-integrated water source cooling unit, 2-cabinet top shared wind hood, 3-inverter cabinet, 4-inlet air docking flange, 5-unit housing, 6-evaporator, 7-condenser, 8-compressor, 9-gas-liquid separator, 10-air duct, 11-water outlet interface, 12-water inlet interface, 13-drain pipe, 14-water inlet pipe; 15-air outlet; 16-drain ball valve; 17-gate valve;

[0023] 131-drainage temperature gauge, 132-drainage pressure gauge, 133-drainage main valve;

[0024] 141- water inlet main valve, 142- filter, 143- water inlet pressure gauge, 144- water inlet temperature gauge. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] Example

[0028] like Figures 1 to 6 As shown, this embodiment provides an integrated water source cooling unit for external wind circulation cooling and heat dissipation of a special frequency conversion cabinet. 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 unit are integrated, and the integrated water source cooling unit is installed in parallel with the frequency converter cabinet, and the bottom of the integrated water source cooling unit is fixed with channel steel. According to actual application needs, a group of frequency converter cabinets can use multiple integrated water source cooling units to be installed in parallel with the frequency converter cabinet to improve the cooling and heat dissipation effect.

[0029] In this embodiment, the integrated water source cooling unit and the top of the inverter cabinet are connected through a shared air hood on the cabinet top. The top of the inverter cabinet is the hot air outlet, and the top of the integrated water source cooling unit is the hot air inlet. One end of the shared air hood on the cabinet top covers the top of the integrated water source cooling unit, and the other end covers the top of the inverter cabinet. The hot air discharged from the inverter cabinet top fan is directly sent to the integrated water source cooling unit through the shared air hood on the cabinet top.

[0030] In this embodiment, the integrated water source cooling unit includes a unit housing, an evaporator arranged at the upper end of the unit housing, a condenser arranged on one side of the bottom end of the unit housing, a compressor and a gas-liquid separator on the other side, and an air duct arranged in the middle of the unit housing; wherein the unit housing is arranged in a shape similar to or the same as the inverter cabinet, generally a rectangular cabinet structure, and the cabinet housing is surrounded by closed end surfaces (it should be noted that Figure 5 The internal structure is shown in the figure, and the surrounding end surface structure of the cabinet shell is hidden), and the front end surface or the rear end surface is set as the air outlet; an expansion valve (not shown in the figure) is also arranged between the evaporator and the condenser; preferably, the evaporator adopts a V-shaped interface structure, with its larger end facing the top of the unit shell, and the gas-liquid separator is used to separate the air and water vapor.

[0031] The refrigeration principle of the integrated 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, the evaporator turns low-temperature and low-pressure liquid refrigerant into low-temperature and low-pressure gaseous refrigerant, absorbs heat to provide cold air for the room, and finally returns to the compressor to form a complete refrigeration cycle.

[0032] The cabinet top shared hood is a rectangular hood-like structure with an opening at the lower end and a hollow center. The connection structure between the cabinet top shared hood and the unit housing and the inverter cabinet is as follows: the upper end of the unit housing is open and constitutes the return air end of the integrated water source cooling unit, and an inlet air docking flange for connecting the cabinet top shared hood is provided at its end; one end of the cabinet top shared hood is connected to the return air end of the integrated water source cooling unit through the inlet air docking flange, and the rest of the hood covers the top of the inverter cabinet. The cabinet top shared hood forms a channel for collecting hot air from the inverter cabinet, and the collected hot air is directly transported to the integrated water source cooling unit.

[0033] The condenser is provided with a water outlet interface and a water inlet interface, the water outlet interface is connected to the drain pipe, and the water inlet interface is connected to the water inlet pipe. On this basis, in this embodiment, a water inlet main valve, a filter, a water inlet pressure gauge and a water inlet temperature gauge are sequentially arranged on the water inlet pipe along the water inlet direction; a drainage temperature gauge, a drainage pressure gauge and a drainage main valve are sequentially arranged on the drainage pipe along the drainage direction. Correspondingly, other valves may be arranged on the water inlet pipe and the drainage pipe, such as a drain ball valve, a water inlet or water outlet gate valve, to facilitate the control of water inlet and outlet, which belongs to the existing mature technology, so it will not be described here.

[0034] In practical applications, the relevant parameters of the integrated water source cooling unit are as follows:

[0035] (1) Nominal cooling capacity of a single unit: 144KW, total nominal cooling capacity of two units: 288K2; (2) Inlet and outlet air circulation mode (indoor circulation): return air from the top, outlet air from the front and back of the cabinet; (3) Direction of water inlet and outlet interface: face to face (or behind the cabinet); (4) Unit size (L#HI): 1700x1700x2650m (the current unit size is an estimate, and the final size needs to be determined by subsequent in-depth design); (5) Equipment installation and foundation: installed in the same cabinet as the inverter, fixed with steel at the bottom; (6) Cooling water requirements: PH-7 industrial water or other water sources after sedimentation and filtration, the water should be free of impurities and corrosive substances Chemical substances (chloride ion content <250mg / ), water inlet temperature, 32 degrees, water pressure: 0.2pa (within 0.5mpa), total water consumption of a single device is 33m / , and total water consumption of two devices is 66m°h; (7) Installed capacity of a single NI-SYL-36KW / 4 device: three-phase five-wire system, 380VAC, 40.8KW (single device, power consumption is automatically adjusted with load); (8) Weight of a single device (estimated): 1250KG; (9) Cooling effect: When the cooling water parameter requirements are met, the inverter room temperature can be set within 30 degrees when the inverter is running at full load. .

[0036] To facilitate the monitoring of the operation of the equipment, this embodiment is provided with a humidity sensor at the return air end; a water outlet temperature sensor at the water outlet interface; and a water inlet temperature sensor at the water inlet interface. By installing the above sensors, the hot air humidity, water outlet temperature, and water inlet temperature can be monitored. The integrated water source cooling unit is connected to an external power supply, and a control panel / control box can be configured to control the equipment (for example, start and stop the equipment).

[0037] The working principle of the utility model is as follows: the shared wind hood on the cabinet top collects the hot air exhausted by the fan on the cabinet top of the inverter, and sends the hot air to the integrated water source cooling unit through the return air end of the integrated water source cooling unit; the hot air passes through the evaporator of the integrated water source cooling unit and becomes cold air, which is then transported from the air outlet end of the unit casing to the inverter room to achieve heat dissipation and cooling of the inverter, and the heat is taken away by the cooling water circulation.

[0038] 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. An integrated water source cooling unit for frequency conversion cabinet with external wind circulation cooling and heat dissipation, characterized in that: The invention comprises an integrated water source cooling unit (1) installed in parallel with a frequency converter cabinet (3) and a cabinet top shared wind hood (2), wherein one end of the cabinet top shared wind hood (2) covers the top of the integrated water source cooling unit (1) and the other end covers the top of the frequency converter cabinet (3); the integrated water source cooling unit (1) comprises a unit housing (5), an evaporator (6) arranged at the upper end of the unit housing (5), a condenser (7) arranged at one side of the bottom end of the unit housing (5), a compressor (8) and a gas-liquid separator (9) at the other side, and an air duct (10) arranged in the middle of the unit housing (5); the condenser (7) is provided with a water outlet interface (11) and a water inlet interface (12), the water outlet interface (11) is connected to a drainage pipe (13), and the water inlet interface (12) is connected to a water inlet pipe (14).

2. The integrated water source cooling unit for frequency conversion cabinet external wind circulation cooling and heat dissipation according to claim 1 is characterized in that: The upper end of the unit casing (5) is open and constitutes the return air end of the integrated water source cooling unit (1), and an inlet air docking flange (4) for connecting to the cabinet top shared air hood (2) is provided at its end.

3. The integrated water source cooling unit for external wind circulation cooling and heat dissipation of the frequency conversion special cabinet according to claim 2 is characterized in that: The front end face or the rear end face of the unit housing (5) is arranged as an air outlet end (15).

4. The integrated water source cooling unit for external wind circulation cooling and heat dissipation of the frequency conversion cabinet according to claim 3 is characterized in that: The cabinet top shared air hood (2) is a hollow rectangular hood-shaped structure with an open lower end, one end of which is connected to the return air end of the integrated water source cooling unit (1) through the inlet air docking flange (4), and the remaining part covers the top of the inverter cabinet (3).

5. The integrated water source cooling unit for frequency conversion cabinet external wind circulation cooling and heat dissipation according to claim 4 is characterized in that: The evaporator (6) adopts a V-shaped interface structure, with the larger end thereof facing the top of the unit casing (5).

6. The integrated water source cooling unit for external wind circulation cooling and heat dissipation of the frequency conversion cabinet according to claim 5 is characterized in that: A humidity sensor is provided at the inlet air docking flange (4); a water outlet temperature sensor is provided at the water outlet interface (11); and a water inlet temperature sensor is provided at the water inlet interface (12).

7. The integrated water source cooling unit for external wind circulation cooling and heat dissipation of the frequency conversion cabinet according to claim 6 is characterized in that: A water inlet main valve (141), a filter (142), a water inlet pressure gauge (143) and a water inlet temperature gauge (144) are sequentially arranged on the water inlet pipe (14) along the water inlet direction.

8. The integrated water source cooling unit for cooling and heat dissipation by wind circulation outside the frequency conversion cabinet according to claim 7 is characterized in that: A drainage temperature gauge (131), a drainage pressure gauge (132) and a drainage main valve (133) are sequentially arranged on the drainage pipe (13) along the drainage direction.

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