High-reliability ventilation system for emergency diesel generating set of power plant
By designing a ventilation system with exhaust chambers outside the short side wall of the diesel generator room, the problem that the diesel generator set ventilation system is difficult to meet the building fire protection requirements and the investment needs of the diesel generator set during fire, and a high-reliability diesel generator set operation is achieved, and the land occupation and investment are reduced.
Patent Information
- Application Number
- CN202421513908.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In power plants, the ventilation system of diesel generator sets is difficult to meet the building fire protection requirements and the investment needs of diesel generator sets during fire, resulting in the fireproof louvers being closed during fire, affecting the operation of diesel generator sets.
A high-reliability ventilation system for emergency diesel generator sets in power plants was designed. By setting up an exhaust chamber outside the short side wall of the diesel generator room, and setting up a diesel generator radiator maintenance door and exhaust port on the exhaust chamber wall, the direction of the heat dissipation air of the diesel generator set is changed, avoiding the use of fire-proof louvers when the fire-proof distance is insufficient.
While meeting building fire protection requirements, the system ensures that the diesel generator set can be put into operation during fire, improves the operating reliability of the diesel generator set, and reduces the footprint and investment in the diesel generator room.
Smart Images
Figure CN222924515U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power generation, and particularly relates to a ventilation system for an emergency diesel generator set in a power plant with high reliability. Background Technique
[0002] In a power plant, when an accident of interruption of station service power supply (including unsuccessful automatic switching of standby station service power supply) occurs during the operation of the unit, in order to ensure the safe shutdown of the unit, an emergency power supply section must be set up. As a standby power supply for the emergency power supply section, the diesel generator must be quickly put into operation when an accident of interruption of station service power supply occurs to meet the requirements of the safe shutdown of the unit. During the operation of the diesel generator set, a large amount of heat will be generated, and a cooling system needs to be set up to dissipate the excess heat of the diesel generator and ensure that the diesel generator works normally within an appropriate temperature range. In the emergency diesel generator set used in a power plant, the most common cooling method is air cooling. A radiator is installed at the head of the diesel generator. The coolant circulating in the cooling system sends the heat generated by the diesel generator into the radiator, and the cold air passes through the radiator under the action of the fan to take away the heat. Since the heat generated by the diesel generator is relatively large, in order to avoid the increase of the temperature in the diesel generator room, generally, exhaust holes are opened on the wall of the diesel generator room close to the outside, the radiator is arranged near the opening, and the hot air passing through the radiator is directly discharged to the outside. Since the amount of air required for cooling the diesel generator and the amount of air required for the combustion of the diesel engine are relatively large, in order to provide the required air, an air inlet is also provided on the wall of the diesel generator room close to the outside.
[0003] The external shape of the diesel generator set is characterized in that the length is much larger than the width. Taking a 1450kW diesel generator set in a 600MW power plant as an example, the equipment length is about 5900mm, the equipment width is about 1400mm, and electrical equipment such as outgoing switch cabinets and feeder cabinets need to be arranged at the generator end, and a maintenance site for the equipment needs to be reserved, so a larger space is required in the equipment length direction. Therefore, when two diesel generator sets are arranged in parallel, the external shape of the main body of the diesel generator room is rectangular, the length direction is parallel to the center line of the diesel generator set, the head of the diesel generator set faces the short side of the diesel generator room, that is, the head of the diesel generator set faces the short side of the diesel generator room, and exhaust holes are opened on the short side wall of the diesel generator room for heat dissipation. In order to avoid short-circuiting of the intake and exhaust air, generally, air inlets are opened on the long side wall of the diesel generator room or on the wall opposite to the exhaust holes.
[0004] In a power plant, the diesel generator room is generally arranged in the centralized control building, and the centralized control building is generally arranged between two boilers. Due to layout optimization, the distance between the centralized control building and the boilers generally cannot meet the requirements in Table 3.4.1 of the "Code for Fire Protection Design of Buildings" (GB50016-2014). To meet the fire protection requirements, according to Note 3 of Article 3.4.1 of the "Code for Fire Protection Design of Buildings" (GB50016-2014), the wall on the side of the centralized control building facing the boilers needs to be set as a firewall. If the air inlet or outlet of the diesel generator room is arranged on this wall, a fireproof louver needs to be installed. The fireproof louver will close during a fire, and at this time, the diesel generator set cannot be put into operation.
[0005] One solution to solve this problem is to arrange the head of the diesel generator towards the chimney direction, that is, the long side of the above-mentioned rectangular diesel generator room faces the boilers, and both the air inlet and outlet are opened on the wall facing the chimney. To avoid short-circuit of the inlet and outlet air, the horizontal distance between the air inlet and outlet needs to be increased, resulting in an increase in the width of the diesel generator room, an increase in the floor area of the diesel generator room, and an increase in investment.
[0006] Another solution is to arrange the head of the diesel generator towards the boilers, that is, the short side of the above-mentioned rectangular diesel generator room faces the boilers, and an exhaust duct is installed at the air outlet. The hot air discharged by the diesel generator set is led to other positions through the exhaust duct. The exhaust duct is made of non-combustible materials and is used as the plug for the opening in the firewall. The biggest drawback of this solution is that a large-section exhaust duct is added to the ground floor of the centralized control building, seriously affecting the appearance of the centralized control building. Generally, the area around the centralized control building is the visiting passage of the power plant. Therefore, it is difficult to be accepted by the owner. In addition, the exhaust duct will affect the maintenance of the diesel engine radiator. Summary of the Invention
[0007] The technical problem to be solved by the present invention is to provide a ventilation system for the emergency diesel generator set in a power plant, which can meet both the building fire protection requirements and the need for the diesel generator set to be put into operation during a fire.
[0008] To solve the above technical problems, the present utility model adopts the following technical solutions:
[0009] Emergency diesel generator ventilation system for power plants with high reliability, including two diesel generator sets arranged in parallel in the diesel generator room. The heads of the diesel generators face the short side wall of the diesel generator room. An exhaust chamber is provided outside the short side wall of the diesel generator room towards which the heads of the diesel generators face. An inspection door for the diesel generator radiator is provided on the outer wall of the exhaust chamber. The exhaust chamber is rectangular, sharing an adjacent wall with the diesel generator room, and the two walls perpendicular to this wall are extensions of the long side walls of the diesel generator room. The long side of the diesel generator room is arranged towards the back of the furnace. This long side wall is part of the wall of the centralized control building closest to the back of the furnace. An air inlet for the diesel generator room is opened on this wall, and the air outlet and the air inlet are located on the same wall. The bottom height of the air outlet is flush with the upper height of the air inlet, and the horizontal distance between the air inlet and the air outlet is greater than 1.5 times the height of the air inlet.
[0010] A safety exit is provided between the air inlet and the exhaust chamber. An inspection door for the diesel generator room is opened on the short side wall of the diesel generator room on the boiler side, and a fire door is provided for the inspection door.
[0011] The air inlet is rectangular, arranged at the lower part and on the boiler side. On the boiler side, it is positioned along the structural column edge of the centralized control building closest to the boiler, and below, it is 200 mm from the ground, and the lower part of the air inlet is 500 mm higher than the outdoor ground.
[0012] Rainproof louvers are provided for the air inlet, and the louver ventilation rate is selected according to 65%; louvers are provided for the air outlet, and the louver ventilation rate is selected according to 80%.
[0013] The height of the air inlet is half of the distance between the bottom of the air inlet and the bottom of the beam above the wall where the air inlet is located.
[0014] The exhaust air volume of the exhaust outlet of the exhaust chamber is the sum of the exhaust air volumes of the two diesel generator sets.
[0015] The plane of the diesel generator room is rectangular. The heads of the diesel generator sets are arranged towards the short side of the diesel generator room. The diesel generator room is arranged at the corner of the bottom floor of the centralized control building closest to the back of the furnace.
[0016] The height of the diesel generator room is 6 m to 6.9 m.
[0017] Exhaust holes are opened on the short side wall of the diesel generator room towards which the heads of the diesel generators face; an inspection door for the diesel generator radiator and an air outlet are provided on the wall of the exhaust chamber towards the back of the furnace.
[0018] In view of the problems existing in the ventilation design of emergency diesel generator sets in power plants at present, the inventor has designed a highly reliable ventilation system for emergency diesel generator sets in power plants, which includes two diesel generator sets arranged in parallel in the diesel generator room. An exhaust chamber is provided outside the short side wall of the diesel generator room facing the head of the diesel generator. An overhaul door for the diesel generator radiator is provided on the outer wall of the exhaust chamber. The exhaust chamber is rectangular, sharing an adjacent wall with the diesel generator room, and the two walls perpendicular to this wall are extensions of the long side walls of the diesel generator room. The long side of the diesel generator room is arranged towards the back of the furnace, and this long side wall is a part of the wall of the centralized control building adjacent to the furnace. An air inlet for the diesel generator room is opened on this wall, and the exhaust port and the air inlet are arranged on the same wall. The bottom height of the exhaust port is flush with the upper height of the air inlet, and the horizontal distance between the air inlet and the exhaust port is greater than 1.5 times the height of the air inlet. Under the condition that the rest of the design of the diesel generator room is the same as that of the conventional diesel generator room, this system changes the direction of the heat dissipation air of the diesel generator set discharged outdoors, avoiding the situation of opening ventilation openings on two mutually perpendicular walls of the diesel generator room, thus avoiding the necessity of using fireproof louvers when the fire separation distance is insufficient, and the situation that the diesel generator set cannot operate due to the closing of the fireproof louvers in case of fire, improving the reliability of the operation of the diesel generator set under the condition of limited layout space. In short, the utility model can realize the input of the diesel generator set in case of fire while meeting the building fire prevention requirements, without increasing the energy consumption of the heat dissipation fan and without affecting the overhaul and maintenance of the radiator, and at the same time, minimizing the floor area and investment of the diesel generator room increased thereby. Compared with the scheme of arranging an exhaust duct at the exhaust port, it does not affect the appearance of the centralized control building and the maintenance of the diesel engine radiator. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic plan view of the ventilation system for the highly reliable emergency diesel generator set in a power plant of the present utility model.
[0020] Figure 2 is Figure 1 Schematic elevation view (in the direction of A-A) of the outer walls of the diesel generator room and the exhaust chamber in the ventilation system for the emergency diesel generator set in a power plant.
[0021] Figure 3 is Figure 1 Schematic elevation view (in the direction of B-B) of the partition wall between the diesel generator room and the exhaust chamber in the ventilation system for the emergency diesel generator set in a power plant.
[0022] In the figure: 1 - diesel generator room, 2 - exhaust chamber, 3 - exhaust hole, 4 - air inlet, 5 - exhaust port, 6 - overhaul door for diesel generator radiator, 7 - safety exit of diesel generator room, 8 - overhaul door of diesel generator room, 9 - diesel generator set. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] I. Basic Design
[0024] Two diesel generator sets are arranged in parallel. The distance between the diesel generator sets and the size of the diesel generator room are determined by factors such as the layout requirements of auxiliary equipment such as diesel generator sets, outgoing switchgear cabinets, and feeder cabinets, as well as the space required for equipment maintenance and repair, and in combination with the layout of the structural columns of the centralized control building, which is the same as the design of a conventional diesel generator room. Generally, the plane of the diesel generator room determined as above is rectangular, and the heads of the diesel generator sets are arranged towards the short side of the diesel generator room. The diesel generator room is arranged at the corner behind the furnace on the ground floor of the centralized control building. The height of the diesel generator room is determined by the height of the ground floor of the centralized control building, generally ranging from 6m to 6.9m. The long side of the diesel generator room is arranged towards the direction behind the furnace. This long side wall is a part of the wall behind the furnace of the centralized control building, and outside the wall is the outdoor area of the centralized control building. An air inlet for the diesel generator room is opened on this wall. The air inlet is rectangular and is arranged at the lower part and on the boiler side. On the boiler side, it is positioned along the side of the structural column of the centralized control building closest to the boiler. Below, it is 200mm from the ground. Since the indoor floor elevation of the centralized control room is generally 300mm higher than the outdoor level, the lower part of the air inlet is 500mm higher than the outdoor ground, which can avoid excessive inhalation of dust on the ground. A rainproof louver is installed at the air inlet, and the louver ventilation rate is selected according to 65%. Section 6.16 of the "Code for Design of Heating, Ventilation and Air Conditioning of Power Plants" (DL / T 5035-2016) presents the calculation method for the ventilation volume of the diesel generator room. In actual projects, the ventilation volume can also be provided by the diesel generator manufacturer with specific values. After determining the air intake volume of the diesel generator room, calculate the air inlet area based on the air velocity at the rainproof louver of the air inlet not exceeding 6m / s. The height of the air inlet is half of the distance between the bottom of the beam above the wall where the air inlet is located and the bottom of the air inlet. Based on the calculated air inlet area and height, the width of the air inlet can be calculated. An exhaust hole is opened on the short side wall of the diesel generator room towards the head of the diesel generator for installing the exhaust hood of the radiator of the diesel generator set. The size of the exhaust hole is directly provided by the diesel generator manufacturer.
[0025] A diesel generator exhaust chamber is provided outside the short side wall of the diesel generator room facing the head of the diesel generator. The exhaust chamber is rectangular, sharing an adjacent wall with the diesel generator room, and the two walls perpendicular to this wall are extensions of the long side walls of the diesel generator room. A maintenance door and an exhaust outlet for the diesel generator radiator are provided on the wall of the exhaust chamber facing the direction behind the furnace. The maintenance door is selected according to the fire door with a specification of 2100×1000mm to ensure tightness, and the maintenance door is normally closed. An exhaust outlet is provided below the bottom beam of the ground floor of the centralized control building. The upper part of the exhaust outlet is flush with the bottom of the beam, and the lower height of the exhaust outlet is the same as the upper height of the air inlet, from which the height of the exhaust outlet can be determined. The exhaust outlet is equipped with louvers, and the louver ventilation rate is selected according to 80%. The exhaust air volume of the exhaust outlet of the exhaust chamber is the sum of the exhaust air volumes of two diesel generators. The exhaust air volume is provided by the diesel generator manufacturer. The exhaust outlet area is calculated based on the air velocity at the louver of the exhaust outlet not exceeding 8m / s. Further, the width of the exhaust outlet can be calculated. The width of the exhaust outlet is the net distance between the fourth wall of the exhaust chamber and the wall of the diesel generator room, from which the position of the fourth wall of the exhaust chamber can be determined.
[0026] The air inlet of the diesel generator room and the exhaust outlet of the exhaust chamber are on the same wall, and it is impossible to completely avoid the exhaust air flowing back to the air inlet. The exhaust air discharged from the exhaust outlet is hot air without other pollutants. Part of the air flowing back to the air inlet will only cause a slight increase in the inlet air temperature and will not cause other adverse consequences. Therefore, as long as the return of hot air is minimized and the impact on the inlet air temperature is reduced. After determining the cross-sectional dimensions and positions of the air inlet of the diesel generator room and the exhaust outlet of the exhaust chamber, the horizontal distance between the air inlet and the exhaust outlet is calculated. The horizontal distance should be greater than 1.5 times the height of the air inlet. If the length of the diesel generator room determined as above does not meet the requirements, the length of the diesel generator room is extended to meet the requirements. Since it is impossible to have a long and narrow air inlet with a width much larger than the height in practice, according to the "Concise Ventilation Design Manual" (China Architecture & Building Press), this distance can make the air flow velocity of the air closest to the air inlet at the exhaust outlet flow towards the air inlet lower than 0.5m / s. At the same time, the exhaust outlet is higher than the air inlet. Considering the upward flow of the hot air at the exhaust outlet, the amount of the returned hot air is very small.
[0027] Since the power for the intake and exhaust of the diesel generator room comes from the cooling fans of the diesel generator set, after determining the air velocities of the air inlet and the exhaust outlet, the relevant data is provided to the diesel generator set manufacturer, and the manufacturer calculates the output of the cooling fan and selects the parameters of the cooling fan that meet the requirements.
[0028] A safety exit is provided between the air inlet of the diesel generator room and the exhaust chamber, and a normally closed fire door with a specification of 2100×1000mm is installed at the safety exit. A maintenance door is opened on the short side wall of the diesel generator room near the boiler side. The size of the maintenance door meets the requirements for the maintenance of the diesel generator set, and a fire door is installed to comply with the provisions of Note 3 of Article 3.4.1 of the "Code for Fire Protection Design of Buildings" (GB50016-2014).
[0029] II. Application Examples
[0030] Taking two 1450 kW diesel generator sets of a certain 2×660 MW unit as an example, as Figures 1 to 3 .
[0031] Arrange the diesel generator room 1 at the corner behind the boiler on the bottom floor of the centralized control building, as Figure 1 shown. In the figure, the right wall faces the boiler, and the upper wall faces the back of the boiler. Two diesel generator sets 9 are arranged in parallel in the diesel generator room 1. At the tail of the diesel generator sets 9, the outgoing switchgear and feeder cabinets of the diesel generator sets are also arranged. According to the layout requirements, the length of the diesel generator room 1 is determined to be 11000 mm. According to the overhaul and maintenance requirements of the diesel generator sets, the distance between the center lines of the two diesel generator sets 9 is determined to be 3500 mm. Combining with the layout of the structural columns of the centralized control building, the width of the diesel generator room 1 is determined to be 7700 mm. The clearance between the diesel generator sets 9 and the wall of the diesel generator room 1 can meet the needs of equipment overhaul and maintenance. Open the air inlet 4 of the diesel generator room on the long side wall above the diesel generator room 1. The air inlet is rectangular. The lower part is positioned 200 mm from the ground, and the side close to the boiler is positioned along the side of the structural column of the centralized control building closest to the boiler. The roof elevation of the diesel generator room is 6.9 m, and the height of the beam above the air inlet is 700 mm. Calculate the height of the air inlet 4 as (6900 - 700 - 200)÷2 = 3000 mm, that is, 3 m, and the top elevation of the air inlet is 3.2 m. According to the data provided by the diesel generator set manufacturer, the required intake air volume for each diesel generator set during operation is 35 m 3 / s, and the total required intake air volume for the diesel generator room 1 is 70 m 3 / s. Install rain-proof louvers at the air inlet. The air velocity at the louvers does not exceed 6 m / s. Select the louver ventilation rate at 65%. It can be calculated that the area of the air inlet is not less than 17.95 ㎡, then the width of the air inlet is not less than 17.95÷3 = 5.983, take 6 m, that is, 6000 mm.
[0032] Open the exhaust holes 3 on the short side wall of the diesel generator room facing the head of the diesel generator sets 9. The exhaust is mechanical exhaust. The size and positioning of the exhaust holes 3 are directly provided by the diesel generator set manufacturer. According to the data provided by the diesel generator set manufacturer, open two exhaust holes with a width of 3000 mm and a height of 2800 mm on the short side wall of the diesel generator room 1, as Figure 3 shown, and the opening is 400 mm from the ground.
[0033] A diesel generator exhaust chamber 2 is provided outside the short side wall of the diesel generator room facing the head of the diesel generator set 9. The exhaust chamber is rectangular, sharing an adjacent wall with the diesel generator room 1, and the two walls perpendicular to this wall are extensions of the long side walls of the diesel generator room 1. A diesel generator radiator inspection door 6 and an exhaust outlet 5 are provided on the wall of the exhaust chamber facing the direction behind the furnace. The specification of the inspection door 6 is selected according to a 2100×1000mm fire door to ensure airtightness, and the inspection door is normally closed. The upper part of the exhaust outlet 5 is flush with the bottom of the beam, and the elevation is 6.20m; the elevation of the lower part of the exhaust outlet 5 is the same as the upper elevation of the air inlet 4, which is 3.20m. From this, the height of the exhaust outlet 5 can be determined as 6200 - 3200 = 3000mm, that is, 3m. The exhaust outlet 5 is provided with louvers, and the louver ventilation rate is selected according to 80%. The exhaust air volume of the exhaust outlet 5 in the exhaust chamber is the sum of the exhaust air volumes of two diesel generator sets. The single-unit diesel generator set operation exhaust air volume provided by the diesel generator set manufacturer is 32m 3 / s, so the exhaust air volume of the exhaust outlet 5 is 64m 3 / s. Calculated according to the air velocity at the louvers of the exhaust outlet 5 not exceeding 8m / s, the area of the exhaust outlet 5 can be calculated to be not less than 10㎡. From this, the width of the exhaust outlet 5 can be calculated to be not less than 3.34m, taking 3.5m, that is, 3500mm. The position of the fourth wall of the exhaust chamber can be determined according to the width of the exhaust outlet 5.
[0034] Check the horizontal distance between the air inlet 4 and the exhaust outlet 5, which is 4800mm, greater than 3000×1.5 = 4500mm. The length of the diesel generator room 1 meets the requirements and does not need to be adjusted. Refer to Figure 5-17 in the "Concise Ventilation Design Manual" (China Architecture & Building Press) to estimate the velocity Vx of the air flowing from the position closest to the air inlet 4 of the exhaust outlet 5 towards the air inlet 4. In this example, b / a = 3:6 = 1:2, x / b = 4800÷3000 = 1.6. Checking the above figure, Vx / V 0 = 0.086, where V 0 is the velocity of the air inlet without considering the louvers, V 0 = 70÷(3×6) = 3.89m / s, then Vx = 0.086×3.89 = 0.335m / s can be calculated. It can be seen that the air velocity here is very slow, and the influence of the exhaust on the intake is very small.
[0035] A safety exit 7 of the diesel generator room is provided between the air inlet 4 of the diesel generator room and the exhaust chamber 2, and a normally closed fire door with a specification of 2100×1000mm is provided. An inspection door 8 of the diesel generator room is opened on the short side wall of the diesel generator room 1 close to the boiler side. In this example, an inspection door of 2700×2700mm normally closed fire door is selected, which can meet the requirements of the inspection of the diesel generator set and the provisions of Note 3 of Article 3.4.1 of the "Code for Fire Protection Design of Buildings" (GB50016-2014).
Claims
1. A high-reliability ventilation system for emergency diesel generator sets in a power plant, comprising two diesel generator sets arranged in parallel in a diesel generator room, with the heads of the diesel generators facing the short side walls of the diesel generator room, characterized in that: An exhaust chamber is arranged outside the short side wall of the diesel generator room facing the head of the diesel generator, and a diesel generator radiator inspection door is arranged on the outer wall of the exhaust chamber; the exhaust chamber is rectangular and shares an adjacent wall with the diesel generator room, and the two walls perpendicular to this wall are extensions of the long side walls of the diesel generator room; the long side of the diesel generator room is arranged toward the rear of the furnace, and this long side wall is a part of the wall behind the furnace of the centralized control building, and an air inlet of the diesel generator room is opened on this wall, and the exhaust outlet and the air inlet are arranged on the same wall; the bottom height of the exhaust outlet is flush with the upper height of the air inlet, and the horizontal distance between the air inlet and the exhaust outlet is greater than 1.5 times the height of the air inlet.
2. The ventilation system for emergency diesel generator sets in power plants according to claim 1, characterized in that: A safety exit is arranged between the air inlet and the exhaust chamber; an inspection door for the diesel generator room is opened on the short side wall of the diesel generator room close to the boiler, and the inspection door is provided with a fire door.
3. The ventilation system for emergency diesel generator sets in power plants according to claim 2, characterized in that: The air inlet is rectangular and arranged at the bottom and on the boiler side. The boiler side is positioned at the edge of the structural column of the centralized control building closest to the boiler. The bottom is 200 mm from the ground, and the lower part of the air inlet is 500 mm higher than the outdoor ground.
4. The ventilation system for emergency diesel generator sets in power plants according to claim 3 is characterized in that: The air inlet is provided with rainproof louvers, and the louver ventilation rate is selected according to 65%; the air outlet is provided with louvers, and the louver ventilation rate is selected according to 80%.
5. The ventilation system for emergency diesel generator sets in power plants according to claim 4, characterized in that: The height of the air inlet is half the distance between the bottom of the beam above the wall where the air inlet is located and the bottom of the air inlet.
6. The ventilation system for emergency diesel generator sets in power plants according to claim 1, characterized in that: The exhaust volume of the exhaust port of the exhaust chamber is the sum of the exhaust volumes of the two diesel generators.
7. The ventilation system for emergency diesel generator sets in power plants according to claim 1, characterized in that: The diesel generator room is rectangular in plan, with the head of the diesel generator set arranged toward the short side of the diesel generator room, and the diesel generator room is arranged at a corner behind the furnace on the ground floor of the centralized control building.
8. The ventilation system for emergency diesel generator sets in power plants according to claim 7, characterized in that: The height of the diesel generator room is 6m to 6.9m.
9. The ventilation system for emergency diesel generator sets in power plants according to claim 8, characterized in that An exhaust hole is opened on the short side wall of the diesel generator room facing the head of the diesel generator; a diesel generator radiator maintenance door and an exhaust port are set on the exhaust room wall facing the rear of the furnace.