Air conditioner and ventilation integrated unit special for underground power transformation and distribution machine room

Abstract

The utility model discloses a special air-conditioning and ventilation integrated unit for an underground power transformation and distribution machine room, and relates to the technical field of air-conditioning refrigerating units. The air conditioning and ventilation integrated unit special for the underground power transformation and distribution machine room comprises a unit base, and an air conditioning / air supply mixing cavity is assembled on the top of the unit base. According to the air-conditioning and ventilation integrated unit special for the underground power transformation and distribution machine room, a ventilation system and an air-conditioning system are integrated in one unit, the structure is compact, the installation space is saved, installation of auxiliary materials such as an air pipe system is reduced, meanwhile, through efficient airflow switching and energy efficiency control, under the ventilation mode of the unit, air supply airflow does not pass through a surface cooler coil, and the ventilation efficiency is improved. Wind resistance is reduced, fan energy consumption is reduced, the temperature of the power transformation and distribution room is reasonably controlled, the energy efficiency of the system is improved, and energy waste is reduced; in addition, due to the arrangement of the electronic control box, the unit is easy to remotely monitor and maintain, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning and refrigeration units, in particular to an air-conditioning and ventilation integrated unit specially used in an underground transformer and distribution machine room. Background Art

[0002] With the rapid development of urban construction, power distribution rooms have become an important part of urban infrastructure. With the emergence of high-rise buildings, super high-rise buildings and large-scale buildings, it has become normal to set up power distribution rooms in basements. Power distribution rooms are set up in basement spaces. Since power distribution rooms are in daily uninterrupted operation, their power distribution equipment generates a lot of heat. If there is no reasonable ventilation and air conditioning, it will inevitably cause unstable operation of power distribution equipment. Therefore, the air conditioning and ventilation system provides a safe environment space for power distribution equipment in underground power distribution rooms.

[0003] However, the ventilation and air-conditioning systems of traditional large underground transformer rooms are usually set up separately, each consisting of an independent air supply and exhaust system consisting of a ventilator (axial flow or centrifugal), ventilation ducts, duct silencers, air supply outlets, and manual air valves, and an air conditioning cooling system consisting of a combined air conditioner and direct expansion air conditioning unit, a chilled water system, air conditioning supply ducts, and air conditioning return ducts.

[0004] Not only does this occupy a large space, but the system consumes a lot of energy. The two independent systems cannot automatically switch in real time, resulting in increased energy waste and high maintenance costs. Therefore, there is an urgent need to develop an energy-saving integrated air conditioning and ventilation unit specifically for basement substations to improve the integration and energy efficiency of ventilation and air conditioning systems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the present invention provides a dedicated integrated air conditioning and ventilation unit for underground transformer and distribution rooms, resolving the problems raised in the aforementioned background art. To achieve the above objectives, the present invention is implemented through the following technical solutions: A dedicated integrated air conditioning and ventilation unit for underground transformer and distribution rooms comprises a unit base, the top of which is respectively equipped with an air conditioning / supply air mixing chamber, a fresh / return air mixing chamber, a return / exhaust buffer chamber, and a return / exhaust fan chamber.

[0006] Preferably, an air conditioning air supply port and a ventilation air supply port are provided on the side of the air conditioning / air supply mixing chamber, a new air / air supply chamber partition is installed on the side of the air conditioning air supply port by bolts, a guide valve servo motor is installed on the top of the new air / air supply chamber partition by bolts, the side of the guide valve servo motor is connected to a sealing valve plate by setting a transmission gear component, the bottom of the guide valve servo motor is connected to an electric guide valve, a surface cooler is installed on the electric guide valve, a condensate receiving pan is installed on the bottom of the electric guide valve by bolts, a condensate drain port is provided on the side of the condensate receiving pan, an upper buffer limiter is installed on the top of the inner wall of the air conditioning / air supply mixing chamber, and a lower buffer limiter is installed on the bottom of the inner wall of the air conditioning / air supply mixing chamber.

[0007] Preferably, the interior of the air conditioning / air supply mixing cavity is equipped with a centrifugal blower, the side of the air conditioning / air supply mixing cavity is equipped with a blower room inspection door, and the side of the air conditioning / air supply mixing cavity is equipped with a primary filter.

[0008] Preferably, the side of the fresh / return air mixing chamber is equipped with an inspection door 1, and the side of the fresh / return air mixing chamber is installed with a fresh air outlet electric air valve by bolts.

[0009] Preferably, the side of the return / exhaust buffer chamber is equipped with an exhaust outlet electric air valve, and the bottom of the return / exhaust buffer chamber is equipped with a return air outlet electric air valve.

[0010] Preferably, the side of the return / exhaust fan chamber is equipped with an inspection door 2, the interior of the return / exhaust fan chamber is equipped with a return / exhaust centrifugal fan by bolts, the side of the return / exhaust fan chamber is provided with a return / exhaust air outlet, and the bottom of the centrifugal blower and the return / exhaust centrifugal fan are both equipped with fan vibration dampers.

[0011] The utility model provides a dedicated air conditioning and ventilation integrated unit for underground transformer and distribution room. It has the following beneficial effects:

[0012] This integrated air conditioning and ventilation unit, specially designed for underground transformer and distribution room, integrates ventilation and air conditioning systems into one unit. It has a compact structure, saves installation space, and reduces the installation of auxiliary materials such as duct systems. At the same time, through efficient airflow switching and energy efficiency control, the supply air flow in the ventilation mode of the unit does not pass through the surface cooler coil, which reduces wind resistance and fan energy consumption, reasonably controls the temperature of the transformer and distribution room, improves the energy efficiency of the system, and reduces energy waste. In addition, the setting of the electronic control box makes the unit easy to remotely monitor and maintain, reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structural diagram of the unit of the present utility model;

[0014] Figure 2 It is a right side view of the utility model;

[0015] Figure 3 It is a left view of the utility model;

[0016] Figure 4 It is a top view of the utility model;

[0017] Figure 5 This is a detailed diagram of the internal partition of the mixing chamber of the present invention.

[0018] In the picture:

[0019] 1. Air conditioning air supply vent; 2. Ventilation air supply vent; 3. Sealed valve plate; 4. Upper buffer stopper; 5. Return / exhaust air vent; 6. Return / exhaust centrifugal fan; 7. Return / exhaust fan chamber; 8. Maintenance door 2; 9. Return / exhaust buffer chamber; 10. Exhaust air outlet electric damper; 11. Return air outlet electric damper; 12. Fresh air outlet electric damper; 13. Fresh / return air mixing chamber; 14. Maintenance door 1; 15. Unit base; 16. Primary filter; 17. Supply fan chamber maintenance door; 18. Centrifugal supply fan; 19. Fan vibration damper; 20. Lower buffer stopper; 21. Air conditioning / supply air mixing chamber; 22. Condensate collection tray; 23. Condensate drain outlet; 24. Electric guide valve; 25. Fresh / supply air chamber partition; 26. Surface cooler; 27. Guide valve servo motor; 28. Transmission gear component. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example 1

[0021] See also Figure 1-Figure 5 A special air conditioning and ventilation integrated unit for underground transformer and distribution room includes a unit base 15, and the top of the unit base 15 is respectively equipped with an air conditioning / supply air mixing cavity 21, a fresh / return air mixing chamber 13, a return / exhaust buffer chamber 9 and a return / exhaust fan chamber 7.

[0022] An air conditioning air supply port 1 and a ventilation air supply port 2 are provided on the side of the air conditioning / air supply mixing chamber 21. A new air / air supply chamber partition 25 is installed on the side of the air conditioning air supply port 1 by bolts. A guide valve servo motor 27 is installed on the top of the new air / air supply chamber partition 25 by bolts. The side of the guide valve servo motor 27 is connected to a sealing valve plate 3 by a transmission gear component 28. The bottom of the guide valve servo motor 27 is connected to an electric guide valve 24. A surface cooler 26 is installed on the electric guide valve 24. A condensate receiving pan 22 is installed on the bottom of the electric guide valve 24 by bolts. A condensate drain port 23 is provided on the side of the condensate receiving pan 22. An upper buffer limiter 4 is installed on the top of the inner wall of the air conditioning / air supply mixing chamber 21, and a lower buffer limiter 20 is installed on the bottom of the inner wall of the air conditioning / air supply mixing chamber 21.

[0023] A centrifugal blower 18 is installed inside the air conditioning / air supply mixing chamber 21 , a blower room inspection door 17 is installed on the side of the air conditioning / air supply mixing chamber 21 , and a primary filter 16 is installed on the side of the air conditioning / air supply mixing chamber 21 .

[0024] An inspection door 14 is installed on the side of the fresh / return air mixing chamber 13, and a fresh air inlet electric air valve 12 is installed on the side of the fresh / return air mixing chamber 13 by bolts.

[0025] An electric air valve 10 for the exhaust air outlet is installed on the side of the return / exhaust buffer chamber 9, and an electric air valve 11 for the return air outlet is installed on the bottom of the return / exhaust buffer chamber 9.

[0026] The side of the return / exhaust fan chamber 7 is equipped with an inspection door 8, and the return / exhaust centrifugal fan 6 is installed inside the return / exhaust fan chamber 7 by bolts. The side of the return / exhaust fan chamber 7 is provided with a return / exhaust port 5, and the bottom of the centrifugal blower 18 and the return / exhaust centrifugal fan 6 are both equipped with a fan vibration damper 19.

[0027] The air supply chamber consists of an air-conditioning condenser 26, a fresh / supply air chamber partition 25, an electric pilot valve 24, an air conditioning air outlet 1, a ventilation air outlet 2, a sealing valve plate 3, an upper buffer stopper 4, and a lower buffer stopper 20. The electric pilot valve 24 is driven by a servo motor. The gear rotation drives the electric pilot valve 24 to rotate. The electric pilot valve 24 is switched up / down by a position control signal, completing the air conditioning / ventilation mode switch.

[0028] The upper buffer limiter 4 and the lower buffer limiter 20 are rubber sealing strips with wedge-shaped grooves processed on the sealing strips. When the sealing valve plate rotates to the buffer limiter, an airflow barrier is formed to prevent airflow from passing through.

[0029] In some ventilation conditions, when outdoor conditions are good, minimum air volume ventilation is used to meet the air exchange frequency and waste heat removal requirements of the transformer room. At this time, the air duct does not need to pass through the surface cooler, which reduces air delivery resistance and fan energy consumption.

[0030] Coupling the ventilation system with the air conditioning system in large-scale power distribution rooms meets the combined needs of ventilation and indoor cooling. This reduces the footprint of large-scale power distribution room air conditioning systems and the installation space for air ducts and fans. Furthermore, the system can be precisely controlled and operated in different modes based on the heat dissipation of distribution room equipment and outdoor weather parameters, further achieving energy savings.

[0031] When in use, the exhaust volume is controlled by opening the exhaust outlet electric air valve 10 and closing the return air outlet electric air valve 11, and at the same time, the fresh air outlet electric air valve 12 is adjusted to control the fresh air outlet of the all-in-one machine, through the primary filter 16, by the centrifugal blower 18, and the sealing valve plate rotates to the lower buffer limiter 20, and the supply air volume is sent from the upper air supply outlet to the transformer substation room, completing the entire supply and exhaust process; in the full ventilation mode, the supply and exhaust process meets the demand for removing the waste heat in the transformer substation room, and at the same time, by adjusting the frequency converter, the supply and exhaust volume is optimized and adjusted to ensure that the supply and exhaust fans operate in an energy-saving state; after passing through the return / exhaust buffer chamber 9, the exhaust outlet electric air valve 10 is adjusted to the minimum state to ensure the minimum exhaust volume, and the return air outlet electric air valve is adjusted Valve 11, and also adjust the fresh air outlet electric air valve 12 to ensure the minimum fresh air volume. The new and return air are mixed and then enter the primary filter 16 and the centrifugal blower 18. At this time, the sealing valve plate 3 rotates to the upper buffer limiter, turning on the cooling mode of the all-in-one machine, the surface cooler 26, the supply air passes through the surface cooler 26, and after sufficient heat exchange with the surface cooler 26, the supply air enters the transformer substation room; in the air-conditioning system mode, when the supply and exhaust modes cannot eliminate the waste heat inside the transformer substation room, start the air-conditioning model, which ensures the minimum air exchange times in the machine room, and turns on the cooling mode of the surface cooler 26 coil, the air duct is changed to the lower air outlet, and the supply air is sent to the transformer substation room after cooling treatment to meet the cooling needs in the machine room. The airflow switching between the upper and lower ducts is changed by the condition of the electric guide valve 24 to ensure that the resistance is minimized in the ventilation mode; when the outdoor temperature is low, the small air volume mode is turned on, and the frequency conversion device is adjusted to make the return / exhaust centrifugal fan 6 run at a lower speed. The indoor air passes through the return / exhaust air port 5 and enters the interior of the all-in-one machine. The exhaust air port electric air valve 10 and the return air port electric air valve 11 are adjusted to control the exhaust air volume, and the fresh air port electric air valve 12 is used to control the air intake volume of the all-in-one machine. After passing through the primary filter 16, the centrifugal blower 18 is adjusted by adjusting the frequency converter. At this time, the closed valve plate rotates to the position of the lower buffer limiter 20, and the air supply volume is sent from the upper air supply port into the substation and distribution room to complete the minimum air volume supply, meet the indoor hygiene requirements and remove the indoor waste heat requirements.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dedicated air conditioning and ventilation integrated unit for underground transformer and distribution room, comprising a unit base (15), characterized in that: The top of the unit base (15) is respectively equipped with an air conditioning / supply air mixing chamber (21), a fresh / return air mixing chamber (13), a return / exhaust buffer chamber (9) and a return / exhaust fan chamber (7); The side of the air conditioning / air supply mixing chamber (21) is provided with an air conditioning air supply port (1) and a ventilation air supply port (2); the side of the air conditioning air supply port (1) is provided with a fresh air / air supply chamber partition (25) by means of bolts; the top of the fresh air / air supply chamber partition (25) is provided with a guide valve servo motor (27) by means of bolts; the side of the guide valve servo motor (27) is provided with a transmission gear member (28) for transmission connection with a sealing valve plate (3); the bottom of the guide valve servo motor (27) is provided with a transmission gear member (28) for transmission connection with a sealing valve plate (3); The electric guide valve (24) is connected to the upper part of the housing through a transmission mechanism, and the electric guide valve (24) is equipped with a surface cooler (26). The bottom of the electric guide valve (24) is equipped with a condensate receiving tray (22) through bolts, and a condensate drain port (23) is provided on the side of the condensate receiving tray (22). The top of the inner wall of the air conditioning / air supply mixing chamber (21) is equipped with an upper buffer stopper (4), and the bottom of the inner wall of the air conditioning / air supply mixing chamber (21) is equipped with a lower buffer stopper (20).

2. The air conditioning and ventilation integrated unit for underground transformer and distribution room according to claim 1, characterized in that: The air conditioning / air supply mixing chamber (21) is internally equipped with a centrifugal blower (18), the side of the air conditioning / air supply mixing chamber (21) is equipped with a blower room inspection door (17), and the side of the air conditioning / air supply mixing chamber (21) is equipped with a primary filter (16).

3. The air conditioning and ventilation integrated unit for underground transformer and distribution room according to claim 2, characterized in that: The side of the fresh / return air mixing chamber (13) is equipped with an inspection door (14), and the side of the fresh / return air mixing chamber (13) is equipped with a fresh air outlet electric air valve (12) via bolts.

4. The air conditioning and ventilation integrated unit for underground transformer and distribution room according to claim 3 is characterized by: An electric air valve (10) for the exhaust air outlet is installed on the side of the return / exhaust buffer chamber (9), and an electric air valve (11) for the return air outlet is installed on the bottom of the return / exhaust buffer chamber (9).

5. The air conditioning and ventilation integrated unit for underground transformer and distribution room according to claim 4 is characterized in that: The side of the return / exhaust fan chamber (7) is equipped with an inspection door (8), the interior of the return / exhaust fan chamber (7) is equipped with a return / exhaust centrifugal fan (6) by bolts, the side of the return / exhaust fan chamber (7) is provided with a return / exhaust air port (5), and the bottoms of the centrifugal blower (18) and the return / exhaust centrifugal fan (6) are both equipped with fan vibration dampers (19).

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