Fan redundancy system of heat dissipation and cooling device of electrical cabinet

Abstract

The invention discloses a fan redundancy system for a heat dissipation and cooling device of an electrical cabinet, which is characterized in that an air-water cooling heat dissipation fan is arranged on a high-voltage frequency converter cabinet and is connected in series with a cooling fan of the electrical cabinet, so that the cooling fan of the air-water cooling device can perform redundancy on the cooling fan of the electrical cabinet; when the top fan of the high-voltage frequency converter cabinet breaks down, the fan of the cooling device normally exhausts air and cools. The equipment is simple and quick to mount; the equipment is long in service life, low in failure rate and reliable in performance; the operation cost is low.

Description

Technical Field

[0001] The invention relates to the field of frequency converter cabinets, and in particular to a fan redundancy system of a heat dissipation and cooling device of an electrical cabinet. Background Art

[0002] In recent years, more and more electrical cabinets need high-power heat dissipation. High-power heat dissipation electrical cabinets are commonly found in important key loads; common ones are full air conditioning refrigeration and air-water cooling devices. 1. Disadvantages of full air conditioning refrigeration: high electricity bills. 2. If a single air-water cooling device has a problem, the temperature of the equipment rises quickly, and the outdoor emergency air outlet can be opened for external circulation. Disadvantages: external dust, dirt and corrosive gases enter, causing the equipment operating environment to deteriorate.

[0003] Therefore, it is necessary to develop a new type of heat dissipation structure to overcome the above problems. Summary of the invention

[0004] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides an electrical cabinet heat dissipation and cooling device fan redundancy system, in which an air-water cooling heat dissipation fan is arranged on the high-voltage inverter cabinet and connected in series with the electrical cabinet cooling fan, so that the cooling fan of the air-water cooling device serves as redundancy for the cooling fan of the electrical cabinet; the equipment is simple and quick to install; the equipment has a long service life, a low failure rate, reliable performance, and low operating costs.

[0005] Technical solution: The present invention is an electrical cabinet heat dissipation and cooling device fan redundancy system, characterized in that: an air-water cooling heat dissipation fan is arranged on the high-voltage inverter cabinet and connected in series with the electrical cabinet cooling fan, so that the cooling fan of the air-water cooling device serves as redundancy for the cooling fan of the electrical cabinet; if the fan on the top of the high-voltage inverter cabinet fails, the fan of the cooling device can normally draw air for cooling.

[0006] Among them, a temperature control probe is installed in the high-voltage inverter cabinet. When there is an air-water cooling failure or the water source temperature is abnormal, and the air outlet temperature is higher than the set temperature, the air conditioner will automatically turn on to ensure stable operation of the equipment.

[0007] Wherein, the electrical cabinet cooling fan is connected to the air-water cooling fan through a pipeline, and the pipeline is provided with an indoor emergency exit and an outdoor emergency exit.

[0008] Wherein, the air-water cooling heat dissipation fan is provided with a cold water inlet pipe and a hot water outlet pipe.

[0009] Wherein, the cold water inlet pipe and the hot water outlet pipe are connected to an external water source.

[0010] Wherein, the high-voltage frequency converter cabinet is provided with an air conditioning unit.

[0011] Among them, the air volume of the electrical cabinet cooling fan is Q1 and the air pressure is P1.

[0012] Among them, the air volume of the air-water cooling fan is Q2 and the air pressure is P2.

[0013] Among them, Q2>Q1; P2>P1.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention improves the heat dissipation mode of the existing high-voltage inverter cabinet, adds redundant configuration of the cooling device (air-water cooling fan), ensures that when the cooling fan of the high-voltage inverter cabinet fails, the cooling fan of the cooling device can still ensure normal cooling of the equipment, and eliminates production losses caused by the failure of the cooling fan. A temperature control probe is added, and when the air outlet temperature of the air-water cooling failure is higher than the set temperature, the air conditioner automatically turns on to ensure stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] In the figure, 1 is the cooling fan of the electrical cabinet; 2 is the air-water cooling fan; 3 is the air conditioning unit; 4 is the temperature control probe; 5 is the cold water inlet pipe; 6 is the hot water outlet pipe; 7 is the indoor emergency exit; and 8 is the outdoor emergency exit. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0018] The present invention provides a redundant system for heat dissipation and cooling device fans of an electrical cabinet. An air-water cooling heat dissipation fan 2 is arranged on the high-voltage frequency converter cabinet and connected in series with the electrical cabinet cooling fan 1, so that the cooling fan of the air-water cooling device serves as a redundancy for the cooling fan of the electrical cabinet. If the fan on the top of the high-voltage frequency converter cabinet fails, the fan of the cooling device can normally draw air for cooling. A temperature control probe 4 is arranged in the high-voltage frequency converter cabinet. When the air-water cooling fails or the water source temperature is abnormal, and the air outlet temperature is higher than the set temperature, the air conditioner is automatically turned on to ensure stable operation of the equipment.

[0019] The electrical cabinet cooling fan 1 of the present invention is connected to the air-water cooling fan 2 through a pipeline, and the pipeline is provided with an indoor emergency outlet 7 and an outdoor emergency outlet 8. The air-water cooling fan 2 is provided with a cold water inlet pipe 5 and a hot water outlet pipe 6. The cold water inlet pipe 5 and the hot water outlet pipe 6 are connected to an external water source. The high-voltage inverter cabinet is provided with an air conditioning unit 3.

[0020] The air volume of the electrical cabinet cooling fan 1 of the present invention is Q1, and the air pressure is P1. The air volume of the air-water cooling fan 2 is Q2, and the air pressure is P2. Q2>Q1; P2>P1.

[0021] The present invention has the following characteristics:

[0022] 1. The equipment is easy and quick to install. The integral structural components are installed outside the inverter room, and the indoor air duct is directly connected to the exhaust port on the top of the inverter cabinet, making the entire air-water cooling system compact and easy to install.

[0023] 2. The equipment has a long service life, low failure rate and reliable performance. Since the air-water cooling system adopts a completely mechanical structure design, it has obvious safety and reliability compared with power and electronic equipment such as air conditioners, and has a longer service life. If the cooling system has a water system failure, the inlet and outlet valves can be closed; the upper and lower air doors set by the air pipeline system can directly discharge the hot air to the outside, and the cold air can be sucked in to achieve open circulation, thereby greatly improving the safety and reliability of the inverter.

[0024] 3. Low operating cost. The operating cost of the air-water cooling system is 1 / 4-1 / 5 of that of the air-conditioning cooling method with the same heat exchange power. The cooling power consumption index is much lower than that of air-conditioning cooling, avoiding secondary waste of energy saving.

[0025] 4. The inverter requires low maintenance and is environmentally hygienic. As the room is closed, the cooling system and the inverter room form a closed circulating air system to cool the equipment, which has the characteristics of small dust ingress and stable ambient temperature and humidity. The filter cleaning cycle is extended from the original 15-30 days to more than 2-3 months, which greatly reduces the on-site equipment maintenance and labor costs.

[0026] 5. Redundant cooling fan structure configuration. The designed air pressure and air volume of the booster fan used in the air-water cooling system are greater than the air pressure and air volume discharge values ​​of the inverter cabinet top fan. When there is a problem with the inverter cabinet top or booster fan, it will not affect the cooling effect of the system.

[0027] 6. Add a temperature control probe. When the air-water cooling fails or the water source temperature is abnormal, the air conditioner will automatically turn on when the air outlet temperature is higher than the set temperature to ensure stable operation of the equipment. Add an indoor emergency air outlet to facilitate maintenance and repair of external air-water cooling.

Claims

1. A fan redundancy system for heat dissipation and cooling device of an electrical cabinet, characterized in that: An air-water cooling fan (2) is arranged on the high-voltage inverter cabinet and connected in series with the electrical cabinet cooling fan (1), so that the cooling fan of the air-water cooling device serves as redundancy for the cooling fan of the electrical cabinet; if the fan on the top of the high-voltage inverter cabinet fails, the fan of the cooling device can normally draw air for cooling.

2. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 1 is characterized in that: A temperature control probe (4) is provided in the high-voltage frequency converter cabinet. When an air-water cooling failure occurs or the water source temperature is abnormal, and the air outlet temperature is higher than the set temperature, the air conditioner is automatically turned on to ensure stable operation of the equipment.

3. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 1 is characterized in that: The electrical cabinet cooling fan (1) is connected to the air-water cooling fan (2) via a pipeline, and the pipeline is provided with an indoor emergency outlet (7) and an outdoor emergency outlet (8).

4. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 3 is characterized in that: The air-water cooling fan (2) is provided with a cold water inlet pipe (5) and a hot water outlet pipe (6).

5. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 4 is characterized in that: The cold water inlet pipe (5) and the hot water outlet pipe (6) are connected to an external water source.

6. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 5 is characterized in that: The high-voltage frequency converter cabinet is provided with an air conditioning unit (3).

7. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 1 is characterized in that: The air volume of the electrical cabinet cooling fan (1) is Q1, and the air pressure is P1.

8. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 7 is characterized in that: The air volume of the air-water cooling fan (2) is Q2, and the air pressure is P2.

9. The fan redundancy system of the electrical cabinet heat dissipation and cooling device according to claim 8, characterized in that: Said Q2>Q1; P2>P1.

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