Station equipment area ventilation and air conditioning system based on regional air volume balance

Abstract

The present application relates to a station equipment area ventilation and air conditioning system based on regional air volume balance, personnel housing ventilation and air conditioning system of the indoor walkway in the equipment area, weak current equipment housing ventilation and air conditioning system, general distribution room housing ventilation system and sanitary housing ventilation system, which form the regional air volume balance of the equipment area through the indoor walkway in the equipment area, ensure the slightly positive pressure of the indoor walkway, thereby simplifying and canceling part of the air supply and exhaust pipelines of the equipment area housing, reducing the density of the pipeline setting above the equipment area, improving the maintainability of the ventilation and air conditioning system air valve, etc.; at the same time of pipeline simplification, the corresponding fan equipment of the pipeline is also canceled, the regional air volume is balanced through the indoor walkway, the system operation resistance is reduced, and the system operation energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of ventilation and air conditioning system design technology for station equipment areas, and in particular to a ventilation and air conditioning system for station equipment areas based on large-scale regional air volume balance. Background Technology

[0002] In traditional rail transit stations, the ventilation and air conditioning systems in the equipment area require direct ductwork to connect the corresponding ventilation and air conditioning rooms to the fresh air ducts and exhaust ducts for air supply, exhaust, and smoke extraction. This results in a large number of ducts, with more than seven main ducts in the large equipment area. The equipment area (referring to the overall area containing various types of rooms, including 18-hour staff rooms, 24-hour staff rooms, low-voltage equipment rooms, general power distribution rooms, and sanitary rooms) requires considerable space for pipeline installation. In addition, after the installation of pipelines for other specialties such as lighting, water supply and drainage, fire protection, and low-voltage electrical systems, the space above the equipment area is dense with pipelines, which affects the inspection and maintenance of air valves and other components, making later maintenance inconvenient. Summary of the Invention

[0003] The purpose of this invention is to address the problems of numerous air ducts and inconvenient inspection and maintenance in existing rail transit station equipment area ventilation and air conditioning systems. This invention proposes a station equipment area ventilation and air conditioning system based on large-area air volume balance. According to the supply and exhaust characteristics of rail transit station equipment area ventilation and air conditioning systems, some supply and exhaust air ducts and fan equipment are eliminated, simplifying the system form, reducing system operating resistance, improving the overall operating efficiency of each system, and reducing the operating energy consumption of the equipment area ventilation and air conditioning system.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A station equipment area ventilation and air conditioning system based on large-scale regional airflow balance includes ventilation and air conditioning systems for personnel rooms, low-voltage equipment rooms, general power distribution rooms, and sanitary rooms. These systems share exhaust ducts, fresh air ducts, partition walls between exhaust and fresh air ducts, partition walls between fresh air ducts and the environmental control room, the environmental control room, and an internal corridor. The environmental control room is located adjacent to the internal corridor. The personnel rooms, low-voltage equipment rooms, general power distribution rooms, and sanitary rooms are all located adjacent to the internal corridor. The combination of these systems with the internal corridor creates a large-scale regional airflow balance and a slightly positive pressure within the internal corridor.

[0006] Large-scale airflow balance in the area: In this invention, "area" refers to the corridors within the equipment area and the various ventilation and air-conditioned rooms adjacent to the corridors. These various ventilation and air-conditioned rooms include personnel rooms, rooms for low-voltage electrical equipment, general electrical distribution rooms, and sanitary rooms. Airflow balance in this invention means that the airflow entering the inner corridor is slightly greater than the airflow leaving the inner corridor; it also means that the airflow entering each ventilation and air-conditioned room adjacent to the inner corridor is slightly greater than the airflow leaving the room. Large-scale airflow balance in the area refers to the supply and return air of the various ventilation and air-conditioned rooms adjacent to the inner corridors in the equipment area. This balance of airflow between the rooms adjacent to the corridors and the inner corridors ensures that the pressure in the inner corridors is slightly positive and meets the ventilation and air conditioning needs of all rooms. Slight positive pressure: This indicates that the pressure in one space is slightly greater than that in adjacent spaces, preventing air leakage from adjacent spaces into that space through gaps in doors and windows.

[0007] The station equipment area ventilation and air conditioning system described in this solution, based on a large-scale regional airflow balance, integrates ventilation and air conditioning systems for personnel rooms, low-voltage equipment rooms, general power distribution rooms, and sanitary rooms. These systems work in conjunction with adjacent corridors within the equipment area to create a large-scale regional airflow balance and a slight positive pressure within the corridors. This means the corridors are interconnected with the personnel rooms, low-voltage equipment rooms, general power distribution rooms, and sanitary rooms, allowing for the elimination of some exhaust and makeup air systems entering these rooms. This reduces the amount of ductwork in the equipment area, lowers the density of overhead pipelines, facilitates the inspection and maintenance of various air valves, and improves future maintenance performance. Furthermore, the large-scale regional airflow balance and slight positive pressure within the corridors effectively balance the airflow in each room, reducing the operational resistance of the various ventilation and air conditioning systems. Furthermore, the return and exhaust air ducts in the corridors and rooms for low-voltage equipment rooms are eliminated, as are the make-up air fans in the equipment area and the smoke exhaust and make-up air ducts in the corridors. The air supply systems for general power distribution rooms and sanitary rooms are also eliminated. These systems can be adjusted to a differential air supply system set according to the air volume balance requirements, fully adapting to the air supply and exhaust characteristics of the equipment area ventilation and air conditioning system and improving the air supply and exhaust efficiency of the equipment area ventilation and air conditioning system.

[0008] Preferably, the ventilation and air conditioning system for the low-voltage equipment room consists of a normal ventilation and air conditioning system for the low-voltage equipment room and an exhaust system for the low-voltage equipment room after the gas is extinguished.

[0009] The ventilation and air conditioning system for low-voltage equipment rooms is a single-fan all-air system. The fresh air from the air duct and the return air from the inner corridor are first processed by the air conditioning unit of the low-voltage equipment room and then sequentially sent to each low-voltage equipment room through the air conditioning supply duct, the first smoke and fire damper, and the air supply and exhaust vent. After offsetting the load in the low-voltage equipment room, the air enters the inner corridor through the second smoke and fire damper on the wall of each low-voltage equipment room. The first smoke and fire damper and the second smoke and fire damper are closed in the event of a fire in the low-voltage equipment room and opened after the fire is extinguished. The air supply and exhaust vent includes the upper air supply vent and the lower air supply vent installed in the low-voltage equipment room.

[0010] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with an independent fresh air duct that connects to the air conditioning unit in the low-voltage equipment room. The independent fresh air duct is equipped with an electric air volume regulating valve. By adjusting the opening of the electric air volume regulating valve, the small fresh air volume and the 100% fresh air volume of the air conditioning system can be achieved. The electric air volume regulating valve is only opened when the ventilation and air conditioning system for the low-voltage equipment room is operating in the small fresh air, 100% fresh air and ventilation conditions. Under other operating conditions, the electric air volume regulating valve is in the closed state.

[0011] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a centralized return air / makeup air inlet and a first return air duct. The return air / makeup air inlet from the inner corridor is connected to the air conditioning unit of the low-voltage equipment room via the first return air duct. The first return air duct is equipped with an electric return air valve and a quick-shut-off valve. The centralized return air / makeup air inlet is located at the lower part of the inner corridor and serves as the return air inlet during normal air conditioning operation. When the ventilation and air conditioning system of the low-voltage equipment room is in low fresh air operation mode, the electric return air valve opens, the return air path is connected, and the centralized return air returns to the air conditioning unit of the low-voltage equipment room via the first return air duct. The electric return air valve only opens when the ventilation and air conditioning system of the low-voltage equipment room is in low fresh air operation mode; under other operating conditions, the electric return air valve is in the closed state.

[0012] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a first makeup air duct that connects to the first return air duct. An electric makeup air valve is installed on the first makeup air duct. When the gas in the low-voltage equipment room is extinguished and exhaust is performed or smoke is exhausted from the internal corridor, the electric makeup air valve opens, the makeup air passage is connected, and the return air / makeup air inlet is used as the makeup air inlet to supply air to the internal corridor from the fresh air duct. The electric makeup air valve is only opened when the makeup air passage is connected during the exhaust of the low-voltage equipment room after the gas is extinguished or smoke is exhausted from the internal corridor. Under other operating conditions, the electric makeup air valve is in the closed state.

[0013] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a first exhaust duct that connects to the first return air duct. An electric exhaust valve is installed on the first exhaust duct. When the ventilation and air conditioning system for the low-voltage equipment room is in 100% fresh air and ventilation mode, the electric exhaust valve opens, the exhaust passage is connected, and the return air / make-up air inlet is used as the exhaust outlet to remove excess air volume from the internal corridor. The electric exhaust valve only opens when the ventilation and air conditioning system for the low-voltage equipment room is in 100% fresh air and ventilation mode and the exhaust passage is connected. Under other operating conditions, the electric exhaust valve is in the closed state.

[0014] The exhaust system for the gas extinguishing of low-voltage equipment rooms consists of a gas extinguishing exhaust fan, a gas extinguishing exhaust pipe, and an electric gas extinguishing exhaust valve.

[0015] The gas extinguishing exhaust duct is connected to the air conditioning supply duct. When in gas extinguishing exhaust mode, the electric gas extinguishing exhaust valve opens, connecting the gas extinguishing exhaust path. The air conditioning supply duct serves as the connecting part of the gas extinguishing exhaust duct. The upper and lower air supply outlets in the low-voltage equipment room serve as the upper and lower exhaust outlets. The height of the lower exhaust outlet meets the requirements for gas extinguishing exhaust, realizing the exhaust after gas extinguishing in the low-voltage equipment room. The electric gas extinguishing exhaust valve only opens when the low-voltage equipment room is in gas extinguishing exhaust mode; under other operating conditions, the electric gas extinguishing exhaust valve is in the closed state.

[0016] By adopting the above-mentioned normal ventilation and air conditioning system setup for the low-voltage equipment room, an electric exhaust valve, a first exhaust duct, an electric gas-extinguishing exhaust valve, and a gas-extinguishing exhaust duct were added. The return exhaust fan was eliminated, and a gas-extinguishing exhaust fan for the low-voltage equipment room was added. This allows the internal corridor to simultaneously meet the application requirements of different operating conditions, such as normal air conditioning conditions (small fresh air, 100% fresh air, and ventilation) for the low-voltage equipment room, as well as the application requirements of different operating conditions, such as exhaust after gas extinguishing in the low-voltage equipment room and smoke exhaust in the corridors of the equipment area. This reduces the number of ducts and equipment in the equipment area. Furthermore, the added electric exhaust valve, first exhaust duct, electric gas-extinguishing exhaust valve, and gas-extinguishing exhaust duct are all located in the environmental control room and do not affect the installation space of the equipment area.

[0017] Preferably, the air supply system draws fresh air from the fresh air duct through the air pipe and delivers it to the air supply interface through the air supply fan. The air supply interface then supplies air to some general power distribution rooms and sanitary rooms according to the actual air volume balance requirements, so as to meet the large air volume balance of the area and the slight positive pressure of the internal corridor.

[0018] Preferably, the equalization air supply fan is located in the environmental control room, and the equalization air supply interface is located in the inner corridor. The side of the equalization air supply fan closest to the inner corridor passes through the environmental control room through the air duct and enters the inner corridor to connect with the equalization air supply interface. The other side of the equalization air supply fan is connected to an equipment interlock air valve through the air duct, and then passes through the environmental control room to connect with the fresh air duct.

[0019] It can connect to the equalization air supply interface located in the inner corridor as needed, avoiding the need to set up too many air ducts in the equipment area to connect various rooms.

[0020] Preferably, the air supply interface is connected to a nearby general electrical room or sanitary room via ductwork, and then the air supply duct branches off from the room and connects to another room via ductwork. This results in shorter ductwork, a more organized layout, and reduced space occupation in internal corridors.

[0021] Preferably, the ventilation system for general electrical distribution rooms includes an independent natural air inlet on the wall of the room near the inner corridor and an exhaust duct in the room. Exhaust air enters the room through the natural air inlet and is then exhausted to the exhaust duct through the exhaust duct of the ventilation system, the second exhaust duct, and the ventilation fan of the room. This reduces the need for ductwork between the room and the fresh air duct.

[0022] Preferably, the ventilation system for sanitary rooms includes independent natural air inlets on the walls or doors of the sanitary rooms near the inner corridor and duct exhaust outlets within the sanitary rooms. Exhaust air first enters the sanitary rooms through the natural air inlets of the sanitary room ventilation system, and then is exhausted to the exhaust duct through the duct exhaust outlets of the sanitary room ventilation system, the second exhaust duct, and the sanitary room ventilation fan, which can reduce the ductwork required between the sanitary rooms and the fresh air duct.

[0023] Preferably, the fresh air in the ventilation and air conditioning system for personnel rooms is first processed by the personnel room air conditioning unit and then delivered to each personnel room through the air supply duct and personnel room air supply outlet. After offsetting the load in the personnel room, the air enters the inner corridor through the natural air outlet on the wall of the personnel room, which can reduce the duct installation of personnel rooms and exhaust ducts.

[0024] Preferably, the ventilation and air conditioning system for personnel rooms is a single-fan all-air system with return air;

[0025] Alternatively, the ventilation and air conditioning system for personnel rooms can be a system that combines an independent fresh air system with the air conditioning terminals in the rooms.

[0026] Preferably, when the ventilation and air conditioning system for personnel rooms is a single-fan all-air system with return air, the single-fan all-air system includes a second return air duct installed in the environmental control room and a centralized return air outlet for the internal corridor. The centralized return air outlet for the internal corridor is connected to the air conditioning unit of the personnel room via the second return air duct.

[0027] When the ventilation and air conditioning system for personnel rooms is a system that combines an independent fresh air system with the air conditioning terminals in the rooms, only the independent fresh air system participates in the large-scale air volume balance of the internal corridor.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. The station equipment area ventilation and air conditioning system described in this plan, based on large-scale regional airflow balance, utilizes internal corridors to achieve large-scale regional airflow balance and slight positive pressure within the corridors, in conjunction with the ventilation and air conditioning systems for personnel rooms, low-voltage equipment rooms, general electrical distribution rooms, and sanitary rooms. This ensures airflow connectivity between the internal corridors and adjacent personnel rooms, low-voltage equipment rooms, general electrical distribution rooms, and sanitary rooms, eliminating the need for some exhaust and makeup air systems entering these rooms. This reduces the number of fans and ductwork in the equipment area, lowers the density of overhead piping, and improves the maintainability and accessibility of ventilation and air conditioning system valves. Furthermore, the simplified piping eliminates the need for corresponding fans, and the internal corridors balance regional airflow, reducing system operating resistance and energy consumption.

[0030] 2. The station equipment area ventilation and air conditioning system described in this plan, based on large-scale regional air volume balance, adds electric exhaust valves, a first exhaust duct, electric gas-extinguishing exhaust valves, and gas-extinguishing exhaust ducts. It eliminates the return exhaust fan and adds gas-extinguishing exhaust fans for the low-voltage equipment room. This allows the system to simultaneously meet the air conditioning requirements of the low-voltage equipment room under normal operating conditions (small fresh air, 100% fresh air, and ventilation) and different operating conditions (exhaust after gas extinguishing in the low-voltage equipment room, and supplemental air in the corridor during smoke exhaust in the equipment area). This reduces the number of ducts and equipment in the equipment area. Furthermore, the added electric exhaust valves, first exhaust ducts, electric gas-extinguishing exhaust valves, and gas-extinguishing exhaust ducts are all located within the environmental control room, without affecting the installation space in the equipment area.

[0031] 3. The ventilation and air conditioning system for the station equipment area based on the large balance of regional air volume described in this plan is equipped with a differential air supply system to supply air to some general power distribution rooms and sanitary rooms to meet the requirements of large balance of regional air volume and slight positive pressure in the inner corridors. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the ventilation and air conditioning system for the station equipment area based on the large-scale balance of regional air volume in this application;

[0033] Figure 2 It is the balance relationship between gas flow direction and air volume in the equipment area under the condition of small fresh air (the air volume in the internal corridor is unbalanced and an adjustment air supply system is set up);

[0034] Figure 3 It is the balance relationship between gas flow direction and air volume in the equipment area under 100% fresh air and ventilation conditions;

[0035] Figure 4It is the balance relationship between the gas flow direction and air volume in the equipment area under the exhaust condition after the gas is extinguished;

[0036] Figure 5 It refers to the airflow direction of the make-up air in the equipment area under smoke exhaust conditions;

[0037] Figure 6 It is a small fresh air system with balanced air volume in the corridor (without a differential air supply system).

[0038] Icons: 1-Exhaust duct; 2-Fresh air duct; 3-Wall separating exhaust and fresh air ducts; 4-Wall separating fresh air ducts and environmental control room; 5-Environmental control room; 6-Internal corridor; 7-18-hour personnel room; 8-24-hour personnel room; 9-Relative-voltage equipment room; 10-General electrical distribution room; 11-Sanitary room; 12-Equipment interlocking damper; 13-Air conditioning unit for personnel room; 14-Air supply outlet for personnel room; 15-Natural air outlet; 16-Air conditioning unit for remote-voltage equipment room; 17-Gas-fired exhaust fan for remote-voltage equipment room; 18-Electricity... 19-Electric return air valve; 20-Electric make-up air valve; 21-Electric exhaust valve; 22-Electric gas extinguishing exhaust valve; 23-Quick shut-off valve; 24-Air conditioning supply duct; 25-Gas extinguishing exhaust duct; 26-First smoke and fire damper; 27-Supply air combined with gas extinguishing exhaust outlet; 28-Second smoke and fire damper; 29-Return air combined with make-up air outlet; 30-Adjustment air supply fan; 31-Adjustment air supply interface; 32-General electrical room ventilation fan; 33-Air duct exhaust outlet; 34-Natural air inlet; 35-Sanitary room ventilation fan. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings.

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] Example 1

[0042] This embodiment provides a ventilation and air conditioning system for station equipment areas based on large-scale regional air volume balance, such as... Figure 1As shown, the system includes ventilation and air conditioning systems for personnel rooms, low-voltage equipment rooms, general electrical distribution rooms, and sanitary rooms. These systems share a common exhaust duct 1, fresh air duct 2, a partition wall 3 between the exhaust and fresh air ducts, a partition wall 4 between the fresh air duct and the environmental control room, an environmental control room 5, and an internal corridor 6. The environmental control room 5 is located adjacent to the internal corridor 6. Personnel rooms, low-voltage equipment rooms 9, general electrical distribution rooms 10, and sanitary rooms 11 are all located adjacent to the internal corridor 6. The combination of these systems with the internal corridor 6 creates a large balance of regional airflow and a slight positive pressure within the corridor. In this embodiment, Figure 1 The illustration only shows the inner corridor 6. The inner corridor 6 can be formed by multiple intersecting corridors. Various rooms are set up adjacent to the inner corridor 6 to form an equipment area.

[0043] The ventilation and air conditioning system for personnel rooms includes a personnel room air conditioning unit 13, a personnel room air supply outlet 14, and a natural air outlet 15. The personnel room air conditioning unit 13 is connected to the fresh air duct 2 through a duct, and an interlocking air valve 12 is installed between the two. The personnel room air conditioning unit 13 and the interlocking air valve 12 connected to it are both located in the environmental control room 5. The personnel room air conditioning unit 13 is connected to the personnel room air supply outlet 14 through a duct. The personnel room air supply outlet 14 is located in the personnel room, so that the personnel room air conditioning unit 13 can drive the air from the fresh air duct 2 into the personnel room. In addition, a natural air outlet 15 is provided between each personnel room and the inner corridor 6, so that the air from the personnel room can enter the inner corridor 6.

[0044] In this embodiment, the personnel rooms include 18-hour personnel room 7 and 24-hour personnel room 8. Both 18-hour personnel room 7 and 24-hour personnel room 8 have personnel room air supply outlets 14. The personnel room air conditioning unit 13 can pass through the environmental control room 5 through the air duct and enter the inner corridor 6, and then pass through the 18-hour personnel room 7 and 24-hour personnel room 8 respectively to connect to the corresponding personnel room air supply outlet 14. Alternatively, it can first pass through one of the personnel rooms to connect to the corresponding personnel room air supply outlet 14, and at the same time pass through the air duct from that personnel room to another personnel room to connect to the personnel room air supply outlet 14 of that other personnel room. This arrangement requires shorter pipelines.

[0045] The ventilation and air conditioning system for personnel rooms, in which the fresh air from the fresh air duct 2 is first processed by the personnel room air conditioning unit 13, and then delivered to the 18-hour personnel room 7 and the 24-hour personnel room 8 through the air supply duct and the personnel room air supply outlet 14, offsetting the load in the personnel rooms, and then entering the inner corridor 6 through the natural air outlet 15 on the walls of the personnel rooms. The ventilation and air conditioning system for personnel rooms is a single-fan all-air system with return air; or, the ventilation and air conditioning system for personnel rooms is a system in the form of an independent fresh air system + air conditioning terminals in the rooms of personnel rooms. When the ventilation and air conditioning system for personnel rooms is a single-fan all-air system with return air, the single-fan all-air system includes a second return air duct installed in the environmental control room 5 and a centralized return air outlet to the internal corridor 6. The centralized return air outlet to the internal corridor 6 is connected to the personnel room air conditioning unit 13 via the second return air duct. When the ventilation and air conditioning system for personnel rooms is a system consisting of an independent fresh air system and room air conditioning terminals in the personnel room, only the independent fresh air system participates in the regional air volume balance of the internal corridor 6.

[0046] In this example, the ventilation and air conditioning system for personnel rooms uses an independent fresh air system plus in-room terminal units. Only the independent fresh air system participates in the regional airflow balance; the in-room terminal units are not included. Figure 1 As shown in the image.

[0047] The ventilation and air conditioning system for the low-voltage equipment room includes a low-voltage equipment room air conditioning unit 16, a low-voltage equipment room gas extinguishing and exhaust fan 17, an electric air volume regulating valve 18, an electric return air valve 19, an electric make-up air valve 20, an electric exhaust valve 21, an electric gas extinguishing and exhaust valve 22, a quick shut-off valve 23, an air conditioning supply duct 24, a gas extinguishing and exhaust duct 25, a first smoke and fire damper 26, a supply and exhaust vent for both air supply and gas extinguishing and exhaust 27, and a second smoke and fire damper. Air supply and return air combined air inlet 28 and 29, air conditioning unit 16 for low-voltage equipment room, gas extinguishing exhaust fan 17 for low-voltage equipment room, electric air volume regulating valve 18, electric return air valve 19, electric air supply valve 20, electric exhaust valve 21, electric gas extinguishing exhaust valve 22, quick shut-off valve 23, air conditioning supply air duct 24, and gas extinguishing exhaust air duct 25 are all located in environmental control room 5. Supply air combined air extinguishing exhaust inlet 27 is located inside low-voltage equipment room 9. As a preferred option, return air combined air supply inlet 29 can also be located in environmental control room 5 to avoid occupying the space of internal corridor 6 or adjacent rooms. First smoke and fire damper 26 and second smoke and fire damper 28 are located in low-voltage equipment room 9 to avoid occupying the space of internal corridor 6.

[0048] In this scheme, the air conditioning unit 16 of the low-voltage equipment room, on the side closest to the inner corridor 6, passes through the air conditioning supply duct 24, exits the environmental control room 5, enters the inner corridor 6, and then passes through the first smoke and fire damper 26 into the low-voltage equipment room 9, connecting to the air supply and exhaust vent 27. The air conditioning supply duct 24, the first smoke and fire damper 26, and the air supply and exhaust vent 27 are all bidirectionally operable. The air conditioning supply duct 24 has a first branch point. From the first branch point, the exhaust duct 25 sequentially connects to the electric exhaust valve 22, the low-voltage equipment room exhaust fan 17, and then exits the environmental control room 5, connecting to the exhaust duct 1. On the other side, the air conditioning unit 16 of the low-voltage equipment room passes through a duct at the second branch point. The system branches off at the second branch point. One branch connects to the electric air volume regulating valve 18, exits the environmental control room 5, and then connects to the fresh air duct 2. The other branch connects to the quick shut-off valve 23 and the electric return air valve 19 in sequence, and then branches off at the third branch point. The side of the third branch point closest to the inner corridor 6 connects to the return air / make-up air inlet 29 via a duct. The return air / make-up air inlet 29 is bidirectional and can form two directions of air supply and exhaust with the inner corridor 6. The second branch at the third branch point connects to the electric make-up air valve 20 via a duct, then exits the environmental control room 5 and connects to the fresh air duct 2. The third branch at the third branch point connects to the electric exhaust valve 21 via a duct, then exits the environmental control room 5 and connects to the exhaust duct 1.

[0049] In this design, the second smoke and fire damper 28 is also bidirectionally operable, used to connect the low-voltage equipment room 9 and the internal corridor 6 in both directions. Furthermore, the supply air / fire exhaust vent 27 can supply air at a low position, and the return air / makeup air vent 29 can provide both return and makeup air at a low position.

[0050] Specifically, the ventilation and air conditioning system for low-voltage equipment rooms consists of a normal ventilation and air conditioning system for low-voltage equipment rooms and an exhaust system for low-voltage equipment rooms after gas is extinguished;

[0051] The ventilation and air conditioning system for the low-voltage equipment room is a single-fan all-air system. The air from the fresh air duct 2 and the return air from the inner corridor are first processed by the air conditioning unit 16 of the low-voltage equipment room and then sequentially pass through the air conditioning supply duct 24, the first smoke and fire damper 26 and the air supply and exhaust vent 27 to each low-voltage equipment room 9. After offsetting the load in the low-voltage equipment room 9, it enters the inner corridor 6 through the second smoke and fire damper 28 on the wall of each low-voltage equipment room 9. The first smoke and fire damper 26 and the second smoke and fire damper 28 are closed in the event of a fire in the low-voltage equipment room 9 and opened after the fire is extinguished. The air supply and exhaust vent 27 includes an upper air supply vent and a lower air supply vent installed in the low-voltage equipment room 9.

[0052] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with an independent fresh air duct that connects to the air conditioning unit 16 in the low-voltage equipment room from the fresh air duct 2. The independent fresh air duct is equipped with an electric air volume regulating valve 18. By adjusting the opening of the electric air volume regulating valve 18, the air conditioning system can achieve small fresh air volume and 100% fresh air volume, such as... Figure 2 , Figure 3 and Figure 6 As shown, the electric air volume regulating valve 18 is only opened when the ventilation and air conditioning system of the room for low-voltage equipment is operating in the small fresh air, fresh air and ventilation conditions. Under other operating conditions, the electric air volume regulating valve 18 is in the closed state.

[0053] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a centralized return air / makeup air inlet 29 and a first return air duct. The return air / makeup air inlet 29 from the inner corridor 6 is connected to the air conditioning unit 16 of the low-voltage equipment room via the first return air duct. The first return air duct is equipped with an electric return air valve 19 and a quick-shutdown valve 23. The centralized return air / makeup air inlet 29 is located at the lower part of the inner corridor 6, serving as the return air inlet during normal air conditioning operation. When the ventilation and air conditioning system for the low-voltage equipment room is in low-fresh-air operation, the electric return air valve 19 opens, the return air path is connected, and the centralized return air returns to the air conditioning unit 16 of the low-voltage equipment room via the first return air duct. Figure 2 and Figure 6 As shown, the electric return air valve 19 is only opened when the ventilation and air conditioning system of the room for low-voltage equipment is in low fresh air condition. Under other operating conditions, the electric return air valve 19 is in the closed state.

[0054] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a first makeup air duct connecting the fresh air duct 2 to the first return air duct. An electric makeup air valve 20 is installed on the first makeup air duct. When the gas in the low-voltage equipment room 9 is extinguished and exhaust is required, or when smoke is exhausted from the internal corridor 6 and adjacent rooms, the electric makeup air valve 20 opens, connecting the makeup air passage. The return air / makeup air inlet 29 serves as the makeup air inlet, supplying air from the fresh air duct 2 to the internal corridor 6. Figure 4 and Figure 5 As shown, the electric make-up air valve 20 is only opened when the make-up air passage is connected during exhaust after the gas is extinguished in the room 9 for low-voltage equipment or during smoke exhaust in the inner corridor 6 and adjacent rooms. Under other operating conditions, the electric make-up air valve 20 is in the closed state.

[0055] The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a first exhaust duct that connects to the first return air duct 1. An electric exhaust valve 21 is installed on the first exhaust duct. When the ventilation and air conditioning system for the low-voltage equipment room is in 100% fresh air and ventilation mode, the electric exhaust valve 21 opens, connecting the exhaust passage. The return air / make-up air inlet 29 serves as the exhaust outlet, removing excess air from the inner corridor 6. Figure 3As shown, the electric exhaust valve 21 is only opened when the ventilation and air conditioning system of the room for low-voltage equipment is in 100% fresh air and ventilation mode and the exhaust passage is connected. Under other operating conditions, the electric exhaust valve 21 is in the closed state.

[0056] The gas extinguishing exhaust system for the low-voltage equipment room consists of a gas extinguishing exhaust fan 17, a gas extinguishing exhaust pipe 25, and an electric gas extinguishing exhaust valve 22.

[0057] The gas extinguishing exhaust duct 25 is connected to the air conditioning supply duct 24. When in gas extinguishing exhaust mode, the electric gas extinguishing exhaust valve 22 opens, connecting the gas extinguishing exhaust path. The air conditioning supply duct 24 serves as the part connected to the gas extinguishing exhaust duct 25. The upper and lower air supply outlets in the low-voltage equipment room 9 serve as the upper and lower exhaust outlets, respectively. The height of the lower exhaust outlet meets the requirements for gas extinguishing exhaust, achieving exhaust after gas extinguishing in the low-voltage equipment room. Figure 4 As shown, the electric gas extinguishing and exhaust valve 22 is only opened when the room 9 for low-voltage equipment is in gas extinguishing and exhaust mode. Under other operating conditions, the electric gas extinguishing and exhaust valve 22 is in the closed state.

[0058] In this scheme, the ventilation system for general power distribution rooms includes a general power distribution room ventilator 32, a duct exhaust outlet 33, and a natural air inlet 34. The side of the general power distribution room ventilator 32 closest to the inner corridor 6 passes through the duct and exits the environmental control room 5 before entering the inner corridor 6, and then enters the general power distribution room 10 and connects to the ventilation duct exhaust outlet 33. The other side of the general power distribution room ventilator 32 is connected to an interlocking air valve 12 through a duct, and then exits the environmental control room 5 and connects to the exhaust duct 1. That is, the natural air inlet 34 allows the air in the inner corridor 6 to enter the general power distribution room 10 and then be discharged through the duct exhaust outlet 33.

[0059] Specifically, the ventilation system for general electrical distribution rooms includes an independent natural air inlet 34 installed on the wall of the room near the inner corridor 6 in the general electrical distribution room 10, and an exhaust duct outlet 33 in the general electrical distribution room 10. Exhaust air enters the general electrical distribution room 10 through the natural air inlet 34, and is then exhausted to the exhaust duct 1 through the exhaust duct outlet 33 of the ventilation system, the second exhaust duct, and the general electrical distribution room ventilation fan 32.

[0060] In this scheme, the ventilation system for sanitary rooms includes a sanitary room ventilator 35, a duct exhaust outlet 33, and a natural air inlet 34. The sanitary room ventilator 35, on the side closest to the inner corridor 6, passes through the environmental control room 5 via a duct and enters the inner corridor 6, then enters the sanitary room 11 and connects to the ventilation duct exhaust outlet 33. The other side of the sanitary room ventilator 35 is connected to an interlocking air valve 12 via a duct, then passes through the environmental control room 5 and connects to the exhaust duct 1. That is, the natural air inlet 34 allows the air in the inner corridor 6 to enter the sanitary room 11 and then be discharged through the duct exhaust outlet 33.

[0061] Specifically, the ventilation system for sanitary rooms includes an independent natural air inlet 34 installed on the wall or door of the sanitary room 11 near the inner corridor 6 and an exhaust duct 33 inside the sanitary room 11. The exhaust air first enters the sanitary room 11 through the natural air inlet 34 of the sanitary room ventilation system, and then is exhausted to the exhaust duct 1 through the exhaust duct 33 of the sanitary room ventilation system, the second exhaust duct, and the sanitary room ventilation fan 35.

[0062] In this embodiment, when the ventilation and air conditioning system for the low-voltage equipment room is operating under low-fresh-air conditions, and when the ventilation system for the general power distribution room contains a fire pump room or a large exhaust volume for the sanitary room 11, resulting in an imbalance in the calculated air volume within the inner corridor 6, an additional equalization air supply system needs to be installed. In this embodiment, the equalization air supply system includes an equalization air supply fan 30 and an equalization air supply interface 31. The equalization air supply fan 30 is located within the environmental control room 5, and the equalization air supply interface 31 is located within the inner corridor 6. The side of the equalization air supply fan 30 closest to the inner corridor 6 exits the environmental control room 5 through a duct and enters the inner corridor 6, connecting to the equalization air supply interface 31. The other side of the equalization air supply fan 30 connects to an equipment interlock valve 12 through a duct, then exits the environmental control room 5 and connects to the fresh air duct 2. The equalization air supply interface 31 can be connected to an air supply duct for air supply at any time. For general electrical distribution rooms 10 and sanitary rooms 11, ductwork can be pre-installed so that the air supply interface 31 can supply air to the general electrical distribution rooms 10 and sanitary rooms 11 respectively through ductwork in the inner corridor 6. Alternatively, the air supply interface 31 can first enter one room through ductwork, and then ductwork can be installed in that room to connect to the other room, so that both rooms can be supplied with air. Figure 1 As shown, the general power distribution room 10 is closer to the air supply interface 31, so it first enters the general power distribution room 10 through the air duct, and after the air supply duct in the general power distribution room 10 branches, it is connected to the sanitary room 11 through the air duct, so that the required air duct is shorter and the arrangement is more orderly, reducing the space occupied by the internal corridor 6.

[0063] Specifically, the air supply system draws fresh air from the fresh air duct 2 through the duct and delivers it to the air supply interface 31 via the air supply fan 30. The air supply interface 31 then supplies air to some general electrical rooms 10 and sanitary rooms 11 according to actual airflow balance requirements, to meet the large-scale airflow balance of the area and the slight positive pressure of the internal corridor 6. When the air supply volume of the internal corridors in the 18-hour personnel room 7, 24-hour personnel room 8, and low-voltage equipment room 9 under normal fresh air conditions is balanced with the exhaust volume of the general electrical rooms 10 and sanitary rooms 11, the air supply system is not required. When the air supply volume of the internal corridors in the 18-hour personnel room 7, 24-hour personnel room 8, and low-voltage equipment room 9 under normal fresh air conditions is unbalanced with the exhaust volume of the general electrical rooms 10 and sanitary rooms 11, the air supply system is required.

[0064] This invention proposes a station equipment area ventilation and air conditioning system based on regional air volume balance, which simplifies the equipment area ventilation and air conditioning system, reduces system operating resistance, improves the overall operating efficiency of each system, and reduces the operating energy consumption of the equipment area ventilation and air conditioning system.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ventilation and air conditioning system for station equipment areas based on large-scale regional air volume balance, characterized in that, The ventilation and air conditioning system includes ventilation and air conditioning systems for personnel rooms, weak current equipment rooms, general power distribution rooms, and sanitary rooms. The ventilation and air conditioning systems for personnel rooms, weak current equipment rooms, general power distribution rooms, and sanitary rooms share exhaust duct (1), fresh air duct (2), partition wall between exhaust duct and fresh air duct (3), partition wall between fresh air duct and environmental control room (4), environmental control room (5), and internal corridor (6). The environmental control room (5) is located on the adjacent side of the internal corridor (6). The personnel rooms, weak current equipment rooms (9), general power distribution rooms (10), and sanitary rooms (11) are all located on the adjacent side of the internal corridor (6). The ventilation and air conditioning systems for personnel rooms, weak current equipment rooms, general power distribution rooms, and sanitary rooms, combined with the internal corridor (6), form a large balance of regional air volume and a slight positive pressure in the internal corridor (6). The ventilation and air conditioning system for low-voltage equipment rooms consists of a normal ventilation and air conditioning system for low-voltage equipment rooms and an exhaust system for low-voltage equipment rooms after gas is extinguished. The ventilation and air conditioning system of the low-voltage equipment room is a single-fan all-air system. The air from the fresh air duct (2) and the return air from the inner corridor are first processed by the air conditioning unit (16) of the low-voltage equipment room and then pass through the air supply duct (24), the first smoke and fire damper (26) and the air supply and exhaust vent (27) to each low-voltage equipment room (9). After offsetting the load in the low-voltage equipment room (9), it enters the inner corridor (6) through the second smoke and fire damper (28) on the wall of each low-voltage equipment room (9). The first smoke and fire damper (26) and the second smoke and fire damper (28) are closed in the low-voltage equipment room (9) during a fire and opened after the fire is extinguished. The air supply and exhaust vent (27) includes the upper air supply vent and the lower air supply vent installed in the low-voltage equipment room (9). The ventilation and air conditioning system for the low-voltage equipment room is also equipped with an independent fresh air duct that connects to the air conditioning unit (16) of the low-voltage equipment room from the fresh air duct (2). The independent fresh air duct is equipped with an electric air volume regulating valve (18). By adjusting the opening of the electric air volume regulating valve (18), the small fresh air volume and the fresh air volume of the air conditioning system can be realized. The electric air volume regulating valve (18) is only opened when the ventilation and air conditioning system for the low-voltage equipment room is operating in the small fresh air, fresh air and ventilation conditions. Under other operating conditions, the electric air volume regulating valve (18) is in the closed state. The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a centralized return air / make-up air inlet (29) and a first return air duct. The return air / make-up air inlet (29) in the inner corridor (6) is connected to the air conditioning unit (16) of the low-voltage equipment room through the first return air duct. The first return air duct is equipped with an electric return air valve (19) and a quick shut-off valve (23). The centralized return air / make-up air inlet (29) is located at the lower part of the inner corridor (6) and serves as the return air inlet during normal air conditioning operation. When the ventilation and air conditioning system for the low-voltage equipment room is in a low fresh air operation, the electric return air valve (19) is opened, the return air path is connected, and the centralized return air returns to the air conditioning unit (16) of the low-voltage equipment room through the first return air duct. The electric return air valve (19) is only opened when the ventilation and air conditioning system for the low-voltage equipment room is in a low fresh air operation. Under other operating conditions, the electric return air valve (19) is closed. The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a first make-up air pipe that connects the fresh air duct (2) to the first return air duct. An electric make-up air valve (20) is installed on the first make-up air pipe. When the gas in the low-voltage equipment room (9) is extinguished and exhaust is performed or the smoke is exhausted from the inner corridor (6), the electric make-up air valve (20) is opened, the make-up air passage is connected, and the return air make-up air inlet (29) is used as the make-up air inlet to make up air from the fresh air duct (2) to the inner corridor (6). The electric make-up air valve (20) is only opened when the make-up air passage is connected under the condition that the gas in the low-voltage equipment room (9) is extinguished and exhaust is performed or the smoke is exhausted from the inner corridor (6). Under other operating conditions, the electric make-up air valve (20) is closed. The ventilation and air conditioning system for the low-voltage equipment room is also equipped with a first exhaust duct that connects to the exhaust duct (1) from the first return air duct. An electric exhaust valve (21) is installed on the first exhaust duct. When the ventilation and air conditioning system for the low-voltage equipment room is in 100% fresh air and ventilation mode, the electric exhaust valve (21) is opened, the exhaust passage is connected, and the return air / make-up air inlet (29) is used as the exhaust outlet to remove excess air volume from the inner corridor (6). The electric exhaust valve (21) is only opened when the ventilation and air conditioning system for the low-voltage equipment room is in 100% fresh air and ventilation mode and the exhaust passage is connected. Under other operating conditions, the electric exhaust valve (21) is closed. The exhaust system for the room with low-voltage equipment is composed of a gas extinguishing exhaust fan (17), a gas extinguishing exhaust pipe (25), and an electric gas extinguishing exhaust valve (22). The gas extinguishing exhaust pipe (25) is connected to the air conditioning supply pipe (24). When the gas extinguishing exhaust is in operation, the electric gas extinguishing exhaust valve (22) is opened, and the gas extinguishing exhaust passage is connected. The air conditioning supply pipe (24) serves as the part connected to the gas extinguishing exhaust pipe (25). The upper and lower air supply outlets in the low-voltage equipment room (9) serve as the upper and lower exhaust outlets. The height of the lower exhaust outlet meets the requirements for gas extinguishing exhaust, thus realizing the exhaust after gas extinguishing in the low-voltage equipment room. The electric gas extinguishing exhaust valve (22) is only opened when the low-voltage equipment room (9) is in operation. Under other operating conditions, the electric gas extinguishing exhaust valve (22) is closed. The equalization air supply system draws fresh air from the fresh air duct (2) through the air duct and delivers it to the equalization air supply interface (31) through the equalization air supply fan (30). The equalization air supply interface (31) supplies air to some general power distribution rooms (10) and sanitary rooms (11) according to the actual air volume balance requirements, so as to meet the large air volume balance of the area and the slight positive pressure of the inner corridor (6).

2. The station equipment area ventilation and air conditioning system based on regional air volume balance according to claim 1, characterized in that, The equalization air supply fan (30) is located in the environmental control room (5). The equalization air supply interface (31) is located in the inner corridor (6). The equalization air supply fan (30) passes through the air duct from the side of the inner corridor (6) to exit the environmental control room (5) and enter the inner corridor (6) to connect to the equalization air supply interface (31). The other side of the equalization air supply fan (30) is connected to an equipment interlock air valve (12) through the air duct, and then passes through the environmental control room (5) to connect to the fresh air duct (2).

3. The station equipment area ventilation and air conditioning system based on regional air volume balance according to claim 2, characterized in that, The air supply interface (31) enters the nearest general power distribution room (10) or sanitary room (11) through the air duct, and after the air supply duct of the room branches off, it connects to another room through the air duct.

4. The station equipment area ventilation and air conditioning system based on regional air volume balance according to any one of claims 1-3, characterized in that, The ventilation system for general electrical distribution rooms includes an independent natural air inlet (34) on the wall of the room near the inner corridor (6) of the general electrical distribution room (10) and an exhaust duct (33) in the general electrical distribution room (10). The exhaust air enters the general electrical distribution room (10) through the natural air inlet (34) and is then discharged to the exhaust duct (1) through the exhaust duct (33) of the ventilation system for general electrical distribution rooms, the second exhaust duct, and the general electrical distribution room ventilator (32).

5. The station equipment area ventilation and air conditioning system based on regional air volume balance according to any one of claims 1-3, characterized in that, The ventilation system for sanitary rooms includes an independent natural air inlet (34) on the wall or door of the sanitary room (11) near the inner corridor (6) and an air duct exhaust outlet (33) in the sanitary room (11). The exhaust air first enters the sanitary room (11) through the natural air inlet (34) of the sanitary room ventilation system, and then is exhausted to the exhaust duct (1) through the air duct exhaust outlet (33) of the sanitary room ventilation system, the second exhaust duct and the sanitary room ventilator (35).

6. The station equipment area ventilation and air conditioning system based on regional air volume balance according to any one of claims 1-3, characterized in that, The fresh air in the ventilation and air conditioning system for personnel rooms is first processed by the air conditioning unit (13) of personnel rooms and then sent to each personnel room through the air supply duct and the air supply outlet (14) of personnel rooms. After offsetting the load in the personnel room, it enters the inner corridor (6) through the natural air outlet (15) on the wall of the personnel room.

7. The station equipment area ventilation and air conditioning system based on large regional air volume balance according to claim 6, characterized in that, The ventilation and air conditioning system for personnel rooms is a single-fan all-air system with return air; Alternatively, the ventilation and air conditioning system for personnel rooms can be a system that combines an independent fresh air system with the air conditioning terminals in the rooms.

8. The station equipment area ventilation and air conditioning system based on regional air volume balance according to claim 7, characterized in that, When the ventilation and air conditioning system for personnel rooms is a single-fan all-air system with return air, the single-fan all-air system includes a second return air duct installed in the environmental control room (5) and a centralized return air outlet in the internal corridor (6). The centralized return air outlet in the internal corridor (6) is connected to the personnel room air conditioning unit (13) via the second return air duct. When the ventilation and air conditioning system for personnel rooms is a system that combines an independent fresh air system with the air conditioning terminal in the room, only the independent fresh air system participates in the large-scale air volume balance of the inner corridor (6).

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