Regulation and control system for artificial environment of large stadium

Abstract

The invention relates to a large stadium artificial environment regulation and control system which comprises glass curtain walls located around a stadium, a ventilation system and a dehumidification system, and the ventilation system comprises an air conditioning unit, an air conditioning air outlet, an air conditioning return air inlet and a ventilation pipeline connecting the air conditioning unit with the air conditioning air outlet and the air conditioning return air inlet, the air conditioner air outlets are respectively positioned at the top of the venue, the side surface above the stand and the auditorium; the dehumidification system comprises a rotating wheel type dehumidifier located under the ground of the venue, a dehumidification air outlet located at the top of the venue, dehumidification return air inlets located on the periphery of the internal venue and a dehumidification pipeline connected with the rotating wheel type dehumidifier, the dehumidification air outlet and the dehumidification return air inlets, and the dehumidification pipeline enters the venue along vertical channels in the four corners of the venue. And the cable net is connected with an annular dehumidification pipeline arranged on the outer side of the inner ring site, and is arranged upwards above the outer side of the inner ring site and below the cable net in an elliptic circumference mode.

Description

Technical Field

[0001] The present application relates to the technical field of artificial environment control, and in particular to a control system for the artificial environment of a large sports stadium. Background Art

[0002] As an important part of large public buildings, large sports stadiums have a volume of about 100,000 m 3 The ceiling height is above 10m, and most of them are dome-shaped. A large number of glass curtain walls are used around the venues. Due to the use of curtain walls, the indoor temperature gradient is large and the cold and hot loads are unevenly distributed. The middle activity area is large and crowded, which leads to a large heat load. In addition, the audience attendance rate and requirements of different competitions during and after the game are different, and the requirements for venue environmental parameters are also different. In order to meet the comfort requirements of a large number of spectators and the environmental requirements of the athletes' competition area, the setting of the air-conditioning system is crucial. Figure 1 As shown, at present, most large sports stadiums use central air conditioning. The air supply outlets are installed in the ceiling or upper grid space of the competition hall, and the return air outlets are set on the seat steps and the side walls of the competition field. The air enters the auditorium and the competition field from top to bottom, and then is taken away by the return air outlet.

[0003] The use of central air conditioning has the following disadvantages: 1. Due to the large number of air supply branches, it is difficult to arrange them in the ceiling grid, resulting in large heat and cold losses and high energy consumption.

[0004] 2. Since the stands in the audience area have a certain slope, there is a large height difference between the upper and lower parts, and the air outlet in the upper area is closer to the audience seats. When the cold wind blows, a large amount of cold air enters the upper audience seats, and the wind feels heavier and colder; when the warm wind blows, the audience in the lower part can hardly feel the hot wind due to the rising hot air flow. This causes a large temperature difference between the upper and lower parts of the audience seats.

[0005] 3. The difference between the building's exterior wall area and the floor area is large, and the use of a large number of glass curtain walls leads to a significant indoor temperature gradient. This temperature gradient makes the indoor airflow susceptible to external influences, making it difficult to maintain a stable temperature and humidity.

[0006] Moreover, due to the concentration of people and concentrated usage time, the cooling and heating loads of large sports venues are unevenly distributed, especially in multi-functional areas. The environmental air-conditioning load requirements of different functional areas are different, and it is impossible to achieve zoned temperature control. Summary of the invention

[0007] The present invention aims to provide a control system for the artificial environment of a large sports stadium, which can maintain a constant temperature and humidity in the stadium, reduce the temperature gradient and uneven distribution of cold and hot loads caused by the glass curtain wall, and meet the different environmental parameter requirements of the audience area and the competition area. The technical problem to be solved by the present invention is achieved by the following technical solution.

[0008] A control system for the artificial environment of a large sports stadium comprises a glass curtain wall located around the stadium, a ventilation system and a dehumidification system, wherein the ventilation system comprises an air conditioning unit located underground in the stadium, an air conditioning outlet, an air conditioning return outlet, and a ventilation duct connecting the air conditioning unit with the air conditioning outlet and the air conditioning return outlet, wherein the air conditioning outlet is located at the top of the stadium, the side above the stands and the auditorium respectively; the dehumidification system comprises a rotary dehumidifier located underground in the stadium, a dehumidification outlet located at the top of the stadium, a dehumidification return outlet located around the inner field and a dehumidification duct connecting the rotary dehumidifier with the dehumidification outlet and the dehumidification return outlet, wherein the dehumidification duct enters the stadium along vertical passages at the four corners of the stadium, is connected to an annular dehumidification duct arranged outside the inner circle field, and is arranged in an elliptical circle upwards just above the outer side of the inner circle field and below the cable net.

[0009] Preferably, the glass curtain wall is an S-shaped curved structure with a skylight on the top, and the skylight opening component is connected to the main control system of the venue.

[0010] Preferably, the air-conditioning outlets and dehumidification outlets located at the top of the venue are both spherical nozzles, an electric actuator is installed in the spherical nozzle, the connecting rod part of the electric actuator is connected to the nozzle, and the neck of the spherical nozzle is equipped with a temperature sensor connected to the main control system, the temperature sensor is used to detect the air flow temperature, and the electric actuator can control the nozzle to adjust within plus or minus 30 degrees according to the command of the main control system to change the air supply angle.

[0011] Preferably, the air outlet of the air conditioner arranged on the upper side of the stand is a drum-shaped air outlet, and a wind direction adjustment mechanism is arranged inside, which can adjust the air supply angle within 180 degrees.

[0012] Preferably, the air-conditioning outlet of the auditorium is arranged at the front side of the lower part of the seat, with a diameter of 120 mm, and a wind direction adjustment mechanism is arranged inside. The wind speed of the air-conditioning outlet of the auditorium is not more than 0.25 m / s.

[0013] Preferably, a plurality of civil structure static pressure boxes are arranged under the auditorium, one end of the static pressure box is connected to the ventilation duct, and the other end is connected to the air outlet of the air conditioner of the auditorium. The size of the ventilation duct is 800mm×400mm, and the other end of the ventilation duct is connected to a plurality of single-unit air volume 55000m 3 / h air conditioning unit.

[0014] Preferably, the air-conditioning return air vents are arranged on the side walls behind the auditorium and the side walls around the venue to return air to the air-conditioning unit, wherein a total of 12 air-conditioning return air vents with a size of 2000mm×1000mm are arranged behind the auditorium.

[0015] Preferably, the ventilation duct is fixed by a truss, the truss includes a main chord and a web, the main chord is vertically arranged, and the web is inclined, and the ventilation duct is installed by inserting and passing through the main chord and the web of the truss.

[0016] Preferably, the rotary dehumidifier includes a drying wheel, a driving motor and a regeneration heater. The drying wheel is provided with a hygroscopic material. The driving motor drives the drying wheel to rotate, inhales air, and sends it into the space to be dehumidified after being dried by the hygroscopic material. At the same time, the air in the space to be dehumidified is heated by the regeneration heater and then takes away the moisture in the hygroscopic material in the reverse direction. Preferably, the dehumidification pipeline is connected by 140 sections of circular pipelines, and the adjacent two sections of pipelines are connected by flanges, and a flexible hose is arranged at the arc position of the pipeline. The flexible pipeline is made of composite silicon glass titanium air duct and is fixed by four points of electric hoist. The bottom of the dehumidification pipeline is supported and tied with 10# channel steel, and the pipeline and the cable body structure are fixed with clamps. The suspension rod is equipped with a vibration absorber. The dehumidification spherical nozzle is arranged on the pipeline in the elliptical air supply area, and the air supply volume of each spherical nozzle is 1360m 3 / h, each dehumidification nozzle is 3.75 meters apart and arranged at an angle of 10 degrees.

[0017] The control system of the artificial environment of a large sports stadium of the present invention can utilize a variety of air conditioning and air supply technologies in a large space and complex stadium structure, reasonably optimize the airflow organization in the stadium, and meet the different requirements of different functional areas in the stadium for the artificial environment. In a building environment where a large number of glass curtain walls are used, the problem of temperature gradient caused by heat radiation is well solved, and the overall air quality in the building environment is uniform and stable. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 This is a schematic diagram of central air conditioning in large sports stadiums in the prior art; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the spherical nozzle structure of the present invention; Figure 4 A side view of the auditorium of the present invention; Figure 5 It is a schematic diagram of the truss structure of the present invention; Figure 6 It is a schematic structural diagram of the rotary dehumidifier of the present invention; Figure 7 This is the dehumidification pipeline layout diagram of the present invention.

[0018] Explanation of the reference numerals: 1. ventilation duct; 2. main chord; 3. web member; 4. air outlet; 5. auditorium. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0020] Example In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] This application is explained using the National Speed ​​Skating Hall air conditioning system as an example. The National Speed ​​Skating Hall is roughly elliptical in shape, about 240m long from north to south, about 174m wide from east to west, and about 33.8m high. The total ice surface area is 10,514m2, with a clearance of 16m to 30m. The structure is complex and the internal space is large. It can accommodate 11,884 seats. There are 1,088 sets of competition lighting fixtures above the venue. The surrounding protective structure adopts curved glass curtain walls as a whole. The heat load of personnel and equipment is high and unevenly distributed. The entire venue has a large water vapor content and high humidity. It is necessary to meet the venue environmental parameter requirements in different seasons and different competitions, and meet the different environmental requirements of the venue in different situations such as winter and summer competitions, with ice and without ice, as shown in Table 1.

[0027] Table 1

[0028] During winter competitions and ice sports: 1. The air temperature of the entire venue is divided into the competition area (the space below 3m above the ice surface) and the audience area, the temperature is 16°C, and the temperature of the competition area and the audience area is controlled to be consistent; 2. Ensure that the relative humidity of the ice surface is Φ≤40%; 3. The fresh air volume for people in the ice area during competitions is guaranteed to be 100m3 / h·person, and the fresh air volume during ice sports is 50m3 / h·person; 4. The wind speed on the ice surface is controlled to ≤0.2m / s.

[0029] During summer games and ice sports, the temperature on the ice area is 16°C and the temperature in the audience seats is 26°C; the relative humidity on the ice surface is ≤40%, and the relative humidity in the audience seats is ≤60%; the fresh air volume and wind speed on the ice surface are the same as in winter.

[0030] like Figure 2 As shown in the figure, the venue is surrounded by S-shaped curved glass curtain walls, which are significantly affected by solar radiation transmission. Due to the curved shape of the S-shaped curved glass curtain wall, the refractive index of solar radiation is different, and the characteristics of the glass material have high thermal conductivity, which can cause rapid alternation of indoor and outdoor temperatures, making it easy to form a temperature gradient in the venue. Therefore, different air flow delivery methods should be used at different locations in the venue to control the air flow organization of the venue in different zones to achieve the air conditioning parameter requirements of the ice rink and the audience seats. In addition, there is a skylight on the top of the venue, and the skylight opening component is connected to the main control system of the gymnasium. When the outdoor temperature is suitable, the skylight on the top of the curtain wall can be opened for natural ventilation. The openable skylight is located at the top of the side curtain wall; when the temperature in spring and autumn is more comfortable for human body sense, the air conditioner is turned off and the skylight is opened to allow natural air circulation, which can serve as a powerful supplement to the air conditioning system, adjust the overall ambient temperature of the venue, and save energy.

[0031] The control system of the artificial environment of a large sports stadium in the present application includes a ventilation system, which includes an air conditioning unit, an air outlet, an air return outlet, and a ventilation duct. In order to save space, the air conditioning unit is set in the basement of the stadium, and the air outlet is set in three places. The top of the stadium is equipped with a spherical nozzle, such as Figure 3 As shown, the spherical nozzle is installed at a high altitude, about 35 meters from the ground, which can generate high-speed airflow and facilitate high-altitude airflow transportation. In addition, an electric actuator is installed in the spherical nozzle, and the connecting rod part of the electric actuator is connected to the nozzle. The neck of the spherical nozzle is equipped with a temperature sensor connected to the main control system. The temperature sensor is used to detect the air flow temperature. The electric actuator can control the nozzle to adjust within plus or minus 30 degrees according to the command of the main control system to change the air supply angle. Through the setting of the temperature sensor, the main control system can control the electric actuator. A drum-shaped air outlet is set on the upper side of the stand, that is, the upper side of the highest point of the stand. In this way, the drum-shaped air outlet is located at the side and rear of the upper auditorium, close to the auditorium, and its spray angle can reach 180 degrees. It has low noise and can disperse the air flow and is suitable for close-range air supply. Below the seats in the auditorium, in front of the seats, there are air outlets for the air conditioner. There is also a wind direction adjustment mechanism inside the air outlet to adjust the wind direction. The diameter of the air outlet is 120mm and it is connected to the static pressure box below the auditorium through a ventilation duct. The air return vents are set in two places, namely the side wall behind the auditorium and the side wall around the venue. Setting the return vents in these two places is not likely to affect the people in the venue.

[0032] The seats in the auditorium are supplied with air by 8 underground air conditioners, each with a wind volume of 55,000m 3 / h air supply from air conditioning units, ventilation ducts pass through ventilation trenches, vertically connect 30 ventilation pipes of 800mm×400mm to the civil structure static pressure box under each stand, and deliver air to the audience seats through the Φ120mm air outlet on the side of the static pressure box. A total of 12 return air outlets of 2000mm×1000mm are set behind the audience seats to return air to the air conditioning units. After this circulation treatment, the air flow delivered to the venue has a wind speed of no more than 0.25m / s at the feet of people, which meets the overall artificial environment parameter requirements of the venue, as well as the temperature, humidity and comfort requirements of the audience when watching the game.

[0033] The competition hall uses a double return full air constant air volume air conditioning system. The return air is mixed with the fresh air from the outside and processed twice. It adapts well to the changes in indoor load and will not cause large changes in cold and hot loads, ensuring the body temperature of the seats. Each unit corresponds to a return fan. The air supply volume is controlled by changing the number of units according to the number of spectators. The audience distribution hall uses a single return full air variable air volume air conditioning system. The return air is mixed with the fresh air from the outside only once. Such a system is relatively simple and suitable for large space air supply. It can save energy while ensuring the air temperature. The fan uses a variable frequency fan, and the fan speed can be adjusted at low load. The ground air supply is combined with the high-altitude air supply to make the temperature evenly distributed.

[0034] like Figure 5 As shown, the ventilation duct is supported and fixed by the main chord and web of the steel structure truss, and is installed through the main chord and web of the truss. The cross-sectional diameter of the main chord is D1600mm, the web is arranged in an inclined shape, and the air supply outlet is installed on the rear side of the high-area seat auditorium.

[0035] The control system of the artificial environment of a large sports stadium of the present application also includes a dehumidification system, which includes a rotary dehumidifier located in the basement of the stadium, a dehumidification outlet located on the top of the stadium, a dehumidification return air outlet located around the internal venue, and a dehumidification pipe connecting the rotary dehumidifier with the dehumidification outlet and the dehumidification return air outlet. The dehumidification pipe enters the stadium along the vertical passages at the four corners of the stadium, and is connected to the annular dehumidification pipe arranged on the outside of the inner circle venue, and is arranged in an elliptical circle upward just above the outside of the inner circle venue and below the cable net. The diameter of the dehumidification pipe is 1m in diameter, and a circular spiral seam pipe is used. The dehumidification outlet uses the same spherical nozzle as the aforementioned air outlet of the air conditioner.

[0036] The dehumidification pipe is installed as a whole under the cable net structure, about 35 meters from the ground, with a total length of about 420m. Because the horizontal projection of the venue space is approximately elliptical, the dehumidification pipe is arranged along a similar shape, which can more evenly transport dry air. The dehumidification pipe is connected by 140 sections of circular pipes, and flanges are used between the pipes. Because there is a certain amount of deformation after the roof cable net is installed, a flexible hose is set at the arc position of the pipe to offset the deformation of the cable net. The flexible pipe is made of composite silicon glass titanium air duct, which can compensate for a certain amount of expansion and contraction. The dehumidification pipe is made by actual measurement. The pipe is fixed with a clamp and fixed at four points by an electric hoist. The bottom of the dehumidification pipe is lifted and tied firmly with 10# channel steel for lifting. The pipe and the cable body structure are fixed with a clamp, and the suspension rod is installed with a vibration absorber. The dehumidification spherical nozzle is arranged on the pipe in the elliptical air supply area. A total of 92 spherical nozzles are set, and the air supply volume of each nozzle is 1360m 3 / h, each dehumidification nozzle is 3.75 meters apart and arranged at an angle of 10 degrees. It has a built-in electric regulating valve actuator. The main control system can send a signal to adjust the air supply angle according to the on-site environmental requirements to meet the dehumidification air volume requirements.

[0037] The spherical nozzle above the venue delivers dry air to the venue. The spherical nozzle and the electric regulating valve are light and flexible, tightly connected with the decorative fixing frame, and the blade angle is adjustable. An electric actuator is installed in the spherical nozzle, and the connecting rod of the actuator is connected to the nozzle. When sending cold air in summer, the main control system sends a signal to the actuator, and the actuator links the nozzle to adjust to a horizontal state, and the airflow at the air outlet is diffused and sent out in an attached state. After the airflow mixes with the surrounding air, the temperature in the venue is changed; when sending hot air in winter, the actuator adjusts the nozzle to a vertical state after receiving the signal, and the warm airflow is sent vertically downward directly to the personnel activity area. In this way, in both summer and winter working conditions, the cold airflow and hot airflow adjust the nozzle direction according to the season, improving environmental comfort and saving energy.

[0038] In order to ensure the safety of athletes, ice-making effect and viewing experience, the relative humidity of the ice area needs to be controlled within a reasonable range, and the humidity during the game and ice sports should be ≤40%. To ensure a reasonable relative humidity above the ice surface of the competition hall, the air needs to be dehumidified to prevent condensation and fogging of the ice surface. The dehumidification system uses a rotary dehumidifier, which regenerates the rotor by heating the air, and restores the dehumidification capacity of the dehumidification rotor material by sending in hot air. The heating heat source uses the waste heat of the ice rink and raises the temperature to 75°C through a heat pump. Figure 6 The working principle of the dehumidification wheel is to convert wet air into dry air and restore the dehumidification function of the saturated part of the wheel to achieve the regeneration and repeated work process. The dehumidification wheel rotates slowly, and the wet air enters through the processing area of ​​the wheel. After passing through the wheel, the moisture in the air is adsorbed by the hygroscopic material in the wheel. Then, the dehumidified dry air is sent to the space to be dehumidified under the action of the fan; at the same time, the air is heated by the heater and sent to the regeneration area of ​​the wheel in the opposite direction to desorb and discharge the moisture absorbed by the hygroscopic material of the wheel. Since the wheel is rotating slowly, moisture absorption and regeneration can be carried out continuously to achieve a stable dehumidification process.

[0039] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0042] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0043] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0044] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0045] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control system for the artificial environment of a large sports stadium, characterized by: It includes glass curtain walls, ventilation systems and dehumidification systems located around the venue. The ventilation system includes air-conditioning units, air-conditioning outlets, air-conditioning return outlets, and ventilation ducts connecting the air-conditioning units with the air-conditioning outlets and the air-conditioning return outlets located in the basement of the venue. The air-conditioning outlets are located on the top of the venue, on the side above the stands and in the auditorium respectively. The dehumidification system includes a rotary dehumidifier located in the basement of the venue, a dehumidification outlet located on the top of the venue, a dehumidification return outlet located around the internal venue and a dehumidification duct connecting the rotary dehumidifier with the dehumidification outlets and the dehumidification return outlets. The dehumidification duct enters the venue along the vertical passages at the four corners of the venue, is connected to the annular dehumidification duct arranged on the outside of the inner circle venue, and is arranged in an elliptical circle upwards just above the outside of the inner circle venue and below the cable net.

2. A control system for the artificial environment of a large sports stadium according to claim 1, characterized in that: The glass curtain wall is an S-shaped curved structure with a skylight on the top. The skylight opening component is connected to the main control system of the venue.

3. The control system for the artificial environment of a large sports stadium according to claim 1, characterized in that: The air-conditioning outlets and dehumidification outlets at the top of the venue are both spherical nozzles. An electric actuator is installed in the spherical nozzle. The connecting rod part of the electric actuator is connected to the nozzle. The neck of the spherical nozzle is equipped with a temperature sensor connected to the main control system. The temperature sensor is used to detect the air flow temperature. The electric actuator can control the nozzle to adjust within plus or minus 30 degrees according to the command of the main control system to change the air supply angle.

4. The control system for the artificial environment of a large sports stadium according to claim 1, characterized in that: The air-conditioning outlet installed on the side above the stands is a drum-shaped outlet with a wind direction adjustment mechanism inside, which can adjust the air supply angle within 180 degrees.

5. The control system for the artificial environment of a large sports stadium according to claim 1, characterized in that: The air-conditioning outlet of the auditorium is set at the front side of the lower part of the seat, with a diameter of 120mm and a wind direction adjustment mechanism inside. The wind speed of the air-conditioning outlet of the auditorium is not more than 0.25m / s.

6. A control system for the artificial environment of a large sports stadium according to claim 5, characterized in that: There are several civil structure static pressure boxes under the auditorium. One end of the static pressure box is connected to the ventilation duct, and the other end is connected to the air outlet of the auditorium. The size of the ventilation duct is 800mm×400mm. The other end of the ventilation duct is connected to several single-unit air volume of 55000m 3 / h air conditioning unit.

7. The control system for the artificial environment of a large sports stadium according to claim 1, characterized in that: The air-conditioning return air vents are arranged on the side walls behind the auditorium and the side walls around the venue, and return air to the air-conditioning unit. A total of 12 air-conditioning return air vents with a size of 2000mm×1000mm are arranged behind the auditorium.

8. The control system for the artificial environment of a large sports stadium according to claim 1, characterized in that: The ventilation duct is fixed by a truss, and the truss includes a main chord and a web. The main chord is vertically arranged, and the web is inclined. The ventilation duct is installed by inserting and passing through the main chord and the web of the truss.

9. The control system for the artificial environment of a large sports stadium according to claim 1, characterized in that: The rotary dehumidifier includes a drying wheel, a driving motor and a regeneration heater. The drying wheel is provided with a hygroscopic material. The driving motor drives the drying wheel to rotate, inhales air, and sends the air into the space to be dehumidified after being dried by the hygroscopic material. At the same time, the air in the space to be dehumidified is heated by the regeneration heater and then reversely takes away the moisture in the hygroscopic material.

10. The control system for the artificial environment of a large sports stadium according to claim 3, characterized in that: The dehumidification pipeline is connected by 140 sections of circular pipelines. The adjacent sections of the pipeline are connected by flanges, and a flexible hose is set at the arc position of the pipeline. The flexible pipeline is made of composite silicon glass titanium air duct and is fixed by four points of electric hoist. The bottom of the dehumidification pipeline is supported and tied with 10# channel steel. The pipeline and the cable body structure are fixed with clamps. The suspension rod is installed with a vibration absorber. The dehumidification spherical nozzle is arranged on the pipeline in the elliptical air supply area. The air supply volume of each spherical nozzle is 1360m 3 / h, each dehumidification nozzle is 3.75 meters apart and arranged at an angle of 10 degrees.

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