CN115332971A - Unidirectional flow-down air supply system for transformer substation - Google Patents

Abstract

The invention provides a unidirectional flow-down air supply system for a transformer substation, which comprises an air conditioner host, an air supply cabinet, a static pressure box, a lower air supply main air pipe and a device cabinet to be cooled, wherein the air conditioner host is connected with the air supply cabinet through a pipeline; the air conditioner main machine is used for vaporizing the refrigerant to form cold air flow, and the cold air flows through the refrigerant pipe and is conveyed into the air supply cabinet; the air supply cabinet is used for filtering the cold air flow and adjusting the temperature, the humidity and the air volume of the cold air flow; the static pressure box is communicated with the outlet end of the air supply cabinet and is used for reducing the noise of cold air flow and improving the air supply distance; the lower air supply main air pipe is communicated with the static pressure box and the equipment cabinet to be cooled and used for conveying cold air flow flowing out of the static pressure box into the equipment cabinet to be cooled. The air conditioner main machine is used for vaporizing the refrigerant to form cold air flow and conveying the cold air flow into the equipment cabinet to be cooled so as to protect the electrified equipment in the cabinet and bring a good and stable running environment for the electrified equipment, thereby reducing the failure rate of the equipment in the cabinet and prolonging the running life of the equipment.

Description

One-way downflow air supply system for substation

technical field

The invention relates to the technical field of substations, in particular to a one-way downflow air supply system for a substation.

Background technique

At present, the line protection of 220kV and 110kV indoor smart substations adopts a decentralized layout mode. The microcomputer line protection and intelligent components are arranged in the central control cabinet of the GIS power distribution device room, and the microcomputer protection and intelligent components have higher requirements for the operating environment. It is required that the suitable operating temperature of the protection and control equipment cabinet generally does not exceed 35°C. If the protection equipment and control equipment in the GIS control cabinet are densely arranged, the space in the cabinet will be narrow and the heat generated by the equipment will be large, which will aggravate the GIS control. The heat dissipation pressure of the cabinet body itself has a phenomenon of high local temperature; at the same time, due to the high temperature in the GIS control cabinet, it is easy to cause overheating of the live equipment, which accelerates the aging process of the live equipment and brings safety hazards to the live equipment ; However, if the protection and intelligent component equipment arranged in the HSBC cabinet fail, it will cause huge losses, which is directly related to the safe and stable operation of the power grid. It can be seen that the temperature and humidity environment control of the HSBC cabinet is very important.

For the problem of high temperature in the GIS control cabinet, the commonly used solutions are:

1) Fan ventilation is used for cooling; but only fan ventilation is used for cooling, which has poor cooling effect, low protection level of fan ventilation technology (low protection level makes it easy for dust, moisture and corrosive gases to enter the cabinet), and it is easy to accumulate dust The shortcomings of dirt and other dirt, which will lead to the pollution of the components in the cabinet, and then aggravate the thermal conduction effect of the electrical components in the cabinet;

2) Cooling with a heat exchanger; however, the cooling effect of the existing heat exchanger still has the problem of poor cooling effect and inapplicability in hot and humid areas in southern summer;

3) Backpack-type air conditioner is used for cooling; the use of backpack-type air conditioner for cooling has the problems of high energy consumption and condensation in the cabinet, which affects the safe operation of the equipment.

Contents of the invention

The technical problem to be solved by the present invention is: to overcome the above-mentioned deficiencies in the background technology, to provide a one-way downflow air supply system for substations, to solve the problem of poor temperature control in the current protection and control equipment cabinets, and the failure of the temperature and humidity control system itself Frequent problems, weak operation and maintenance, etc., reduce the cost of temperature and humidity control equipment and maintenance costs, and bring a good operating environment to the protection and control equipment in the cabinet.

The invention provides a one-way downflow air supply system for a substation, comprising an air conditioner main unit, an air supply cabinet, a static pressure box, a main air duct for downflow air supply, and an equipment cabinet to be cooled; the air conditioner main unit is used to vaporize refrigerant A cold air flow is formed, and the cold air is transported into the air supply cabinet through the refrigerant pipe; the air supply cabinet is used to filter the cold air flow and adjust the temperature, humidity and air volume of the cold air flow; the static pressure box and the air supply cabinet The outlet end of the outlet is connected to reduce the noise of the cold air flow and increase the air supply distance; the main air duct of the down air supply is connected to the static pressure box and the equipment cabinet to be cooled, and is used to transport the cold air flow flowing out of the static pressure box to the equipment cabinet to be cooled.

Optionally, multiple air supply branch pipes are also connected to the main air supply pipe of the downflow, and a diffuser air supply port is connected to the end of each air supply branch pipe far away from the main air supply pipe of the downflow, and the air supply is sent through the diffuser. The air outlet delivers the cold air to the equipment cabinet to be cooled.

Optionally, a second air volume regulating valve and a third air volume regulating valve are sequentially provided in each air supply branch pipe.

Optionally, the second air volume regulating valve is configured as an electronically controlled air volume regulating valve, and the third air volume regulating valve is configured as a manual air volume regulating valve.

Optionally, the number of the air supply branch pipes is greater than or equal to the number of equipment cabinets to be cooled.

Optionally, a first air volume regulating valve for adjusting the air volume is also provided in the main down-supply air duct, and the first air-volume regulating valve is arranged in one end of the main down-supply air duct close to the plenum.

Optionally, a temperature and humidity sensor is provided at the end of each air supply branch pipe close to the equipment cabinet to be cooled.

Optionally, the air supply cabinet includes a box, and an air filter assembly, a surface cooler, a fan assembly, and an air volume adjustment assembly arranged in the box; the air filter assembly is connected to the refrigerant pipe. Connected, used to filter the cold air flow; the surface cooler. Interconnected with the air filter assembly, used to process the cold air flow to the required temperature and humidity; the fan assembly. Connected to the surface cooler. And air volume adjustment The assembly. is used to deliver the cold airflow to the air volume adjustment assembly. The air volume adjustment assembly. communicates with the static pressure box and is used to adjust the air volume of the cold air flow delivered to the static pressure box.

Optionally, an exhaust structure is provided on the top of the equipment cabinet to be cooled.

Compared with the prior art, the present invention has the following beneficial effects:

The one-way downflow air supply system for a substation provided by the present invention vaporizes the refrigerant through the main unit of the air conditioner to form a cold air flow, and transports the cold air flow to the equipment cabinet to be cooled, so as to protect the live equipment in the cabinet and Bring a good and stable operating environment for the live equipment, reduce the failure rate of the equipment in the cabinet, and prolong the operating life of the equipment; and use the air supply cabinet, the static pressure box and the main air duct for the lower air supply to cooperate with each other to control the cold air flow Transport to make the delivery of cold air flow smoother.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. Hereinafter, the present invention will be described in further detail with reference to the drawings.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a schematic diagram of a one-way downflow air supply system used in a substation in an embodiment of the present invention;

Fig. 2 is a partially enlarged schematic diagram of A in Fig. 1;

FIG. 3 is a partially enlarged schematic diagram of B in FIG. 1 .

in:

1. Air conditioner main unit, 2. Refrigerant pipe, 3. Air supply cabinet, 3.1. Filter section, 3.2. Surface cooler, 3.3. Fan assembly, 3.4. Air volume adjustment assembly, 3.5. Combined air cabinet box, 4. Static Pressure box, 5. Flow regulating valve, 6. Downflow main air duct, 7. Manual air volume regulating valve, 8. Electronically controlled air volume regulating valve, 9. Air supply branch pipe, 10. Temperature and humidity sensor, 11. Diffuser Air supply port, 12, orifice air exhaust port, 13, equipment cabinet to be cooled.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present invention clearer and easier to understand, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings of the present invention are all in simplified form and use inaccurate proportions, which are only used to facilitate and clearly illustrate the implementation of the present invention; some mentioned in the present invention are not limited to the specific examples in the drawings. Quantity; the orientation or positional relationship indicated by the 'front', 'middle', 'back', 'left', 'right', 'upper', 'down', 'top', 'bottom' and 'middle' mentioned in the present invention are all based on this The orientation or positional relationship shown in the drawings of the invention does not indicate or imply that the device or component referred to must have a specific orientation, nor should it be construed as a limitation of the present invention.

This embodiment:

Referring to Fig. 1 to Fig. 3, a kind of substation unidirectional flow air supply system provided by the present invention comprises air conditioner host 1, air supply cabinet 3, static pressure box 4, down air supply main air duct 6 and cooling equipment cabinet 13;

The air conditioner host 1 is arranged outdoors, and the refrigerant is vaporized through the operation of the compressor, so as to reduce the local air temperature by absorbing surrounding heat;

The cold air cooled by the air conditioner main unit 1 is transported to the air supply cabinet 3 through the refrigerant pipe 2, and is filtered, temperature and humidity adjusted, and wind speed adjusted through the air supply cabinet 3, and then transported to the static pressure box 4;

Reduce noise and increase air supply distance through the static plenum 4 for cold air flow, and then transport it to the equipment cabinet 13 to be cooled through the main air duct 6 of the lower air supply, so as to realize air cooling in the equipment cabinet 13 to be cooled.

Optionally, the air conditioner host 1 is configured as a unitary air conditioner host structure, and its specific structure refers to the prior art.

Optionally, the air supply cabinet 3 includes a box body 3.5 and an air filter assembly 3.1, a surface cooler 3.2, a fan assembly 3.3, and an air volume adjustment assembly 3.4 arranged in the box body 3.5 and connected sequentially; the cold air flows through the air filter assembly 3.1 After filtering, the cold air flow is processed to the required temperature and humidity by the surface cooler 3.2, and then the cold air flow is delivered to the air volume adjustment assembly 3.4 by the fan assembly 3.3, and the wind speed and other parameters are adjusted by the air volume adjustment assembly 3.4 before being sent to the static pressure Inside box 4.

Optionally, a first air volume regulating valve 5 for adjusting the air volume is also provided in the lower air supply main air duct 6, and the first air volume adjustment valve 5 is arranged on the lower air supply main air duct 6 close to the static pressure box 4 In one end, to realize the adjustment of the air volume delivered from the plenum box 4 to the main air duct 6 of the lower air supply.

Optionally, in order to realize the air cooling of multiple equipment cabinets 13 to be cooled at the same time, multiple interfaces are also provided on the lower air supply main air duct 6, and the air supply branch pipes 9 are connected to the multiple interfaces. The air supply branch pipe 9 and the equipment cabinet 13 to be cooled are preferably arranged in one-to-one correspondence, and the end of the air supply branch pipe 9 is connected to the air outlet 11 of the diffuser, and the cold air flow in the lower air supply main air pipe 6 is transported through the air supply branch pipe 9 In the screen cabinet of the equipment cabinet 13 to be cooled, the temperature is lowered nearby, so that the best operating environment is reached in the equipment cabinet 13 to be cooled. Preferably here: the interface and the air supply branch pipe 9 adopt a one-to-one correspondence setting, and the quantity of the interface and the air supply branch pipe 9 is greater than or equal to the quantity of the equipment cabinet 13 to be cooled, so that the equipment cabinet 13 to be cooled can be improved (As increasing the quantity) is also applicable to the one-way downflow air supply system that this substation uses.

Optionally, in order to realize the adjustment of the air volume of the cold air flow delivered to each equipment cabinet 13 to be cooled, a second air volume adjustment valve 8 and a third air volume adjustment valve 7 are sequentially provided in each air supply branch pipe 9 . Here, preferably: the second air volume regulating valve 8 is preferably configured as an electronically controlled air volume regulating valve structure, and the third air volume regulating valve 7 is preferably configured as a manual air volume regulating valve structure.

Optionally, in order to effectively detect the temperature and humidity in each equipment cabinet to be cooled 13 in real time, in each air supply branch pipe 9 close to the equipment cabinet to be cooled 13 (or extend into the equipment cabinet to be cooled 13) in one end A temperature and humidity sensor 10 is provided, and the temperature and humidity sensor 10 transmits the temperature and humidity detection data in each equipment cabinet 13 to be cooled to the control system of the air conditioner host 1, and the control system adjusts the control strategy according to the temperature and humidity data, and adjusts the compression The power of the machine and the flow rate of the refrigerant match the end load demand, thereby automatically adjusting the output capacity of the air conditioner host.

Optionally, an orifice air outlet 12 is provided on the top of the equipment cabinet to be cooled 13 for discharging the heat in the equipment cabinet to be cooled 13 to the outside of the equipment cabinet to be cooled 13 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A unidirectional downflow air supply system for a substation, characterized in that it comprises an air conditioner main unit (1), a supply cabinet (3), a plenum box (4), a downflow main air duct (6) and a waiting Cooling equipment cabinet (13); The air conditioner main unit (1) is used to vaporize the refrigerant to form a cold air flow, and the cold air flow is delivered to the air supply cabinet (3) through the refrigerant pipe (2); The air supply cabinet (3) is used to filter the cold air flow and adjust the temperature, humidity and air volume of the cold air flow; The plenum box (4) communicates with the outlet end of the air supply cabinet (3), and is used to reduce noise and improve the air supply distance for the cold air flow; The lower air supply main air duct (6) communicates with the plenum box (4) and the equipment cabinet to be cooled (13), and is used to deliver the cold airflow flowing out of the plenum box (4) to the equipment cabinet to be cooled (13) Inside. 2. The unidirectional flow down air supply system for substation according to claim 1, characterized in that, on the down air main air duct (6), a plurality of air supply branch pipes (9) are also connected, and each air supply The end of the branch pipe (9) away from the main air supply pipe (6) of the lower air supply is connected with a diffuser air supply port (11), and the cold air flow is delivered to the equipment cabinet to be cooled (13) through the diffuser air supply port (11) Inside. 3. The one-way downflow air supply system for substation according to claim 2, characterized in that, each air supply branch pipe (9) is sequentially provided with a second air volume regulating valve (8) and a third air volume regulating valve. valve (7). 4. The one-way downflow air supply system for substation according to claim 3, characterized in that, the second air volume regulating valve (8) is configured as an electronically controlled air volume regulating valve structure, and the third air volume regulating valve ( 7) It is set as a manual air volume regulating valve structure. 5. The one-way downflow air supply system for a substation according to any one of claims 2-4, characterized in that the number of said air supply branch pipes (9) is greater than or equal to the number of equipment cabinets (13) to be cooled. 6. The one-way downflow air supply system for substation according to claim 5, characterized in that, a first air volume regulating valve (5) for adjusting the air supply volume is also provided in the downflow main air duct (6) ), and the first air volume regulating valve (5) is arranged in one end of the lower air supply main air duct (6) close to the static pressure box (4). 7. The one-way downflow air supply system for substation according to claim 6, characterized in that a temperature and humidity sensor (10) is arranged in each air supply branch pipe (9) near one end of the equipment cabinet to be cooled (13) ). 8. The one-way downflow air supply system for substation according to claim 1 or 7, characterized in that, the air supply cabinet (3) includes a box (3.5) and an air box arranged in the box (3.5). filter assembly (3.1), surface cooler (3.2), fan assembly (3.3) and air volume adjustment assembly (3.4); The air filter assembly (3.1) communicates with the refrigerant pipe (2) for filtering the cold air flow; The surface cooler (3.2) communicates with the air filter assembly (3.1) for processing the cold air flow to the required temperature and humidity; The fan assembly (3.3) communicates with the surface cooler (3.2) and the air volume adjustment assembly (3.4), and is used to deliver the cold air flow to the air volume adjustment assembly (3.4); The air volume adjustment component (3.4) communicates with the plenum box (4), and is used for adjusting the air volume of the cold air flow delivered into the plenum box (4). 9. The one-way downflow air supply system for a substation according to claim 8, characterized in that an exhaust structure is provided on the top of the equipment cabinet (13) to be cooled.

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