CN114183901B - Intelligent control method and system for radon-reducing ventilation system of underground building suitable for multiple scenes - Google Patents
Intelligent control method and system for radon-reducing ventilation system of underground building suitable for multiple scenes Download PDFInfo
- Publication number
- CN114183901B CN114183901B CN202111518355.6A CN202111518355A CN114183901B CN 114183901 B CN114183901 B CN 114183901B CN 202111518355 A CN202111518355 A CN 202111518355A CN 114183901 B CN114183901 B CN 114183901B
- Authority
- CN
- China
- Prior art keywords
- ventilation
- radon
- concentration
- air
- measuring instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/0001—Control or safety arrangements for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/68—Radon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Ventilation (AREA)
Abstract
The invention discloses an intelligent control method and system of a radon-reducing ventilation system of a underground building, which are applicable to multiple scenes, and comprise an HVAC system, a ventilation main console, a radon-measuring instrument and a connecting cable, wherein the ventilation main console is respectively connected with the HVAC system and the radon-measuring instrument; the monitoring and pre-alarming system provides alarming information for the ventilation management system, and the ventilation learning library updates the ventilation database in real time; the monitoring and pre-alarming system monitors the actual operation effect in real time, and ensures the radon concentration safety level in the building, particularly in the working area.
Description
Technical Field
The invention belongs to the technical field of energy conservation and ventilation, and particularly relates to an intelligent control method and system of a radon-reducing ventilation system of a multi-scene underground building.
Background
Radon is the second leading cause of lung cancer, more than 50% of natural radiation irradiation from radon and its daughter is mainly colorless and odorless radioactive gas released by decay daughter of radium in rocks, soil and building materials in the natural decay process. Radon and radon daughter are diffused and migrated into the air through air holes with different particle diameters in rocks, soil and building materials, so that the radon concentration of the indoor air is increased. Ventilation radon reduction is one of the most widely, mainly and effectively applied means for reducing radon concentration in underground engineering.
The continuous single ventilation mode results in high building ventilation energy consumption, and the reduction of building energy consumption, particularly ventilation energy consumption, is urgent. Meanwhile, ventilation is continued for a long time, particularly ventilation is performed at night, and equipment in the underground building can be damaged due to high air humidity at night. Underground construction has different service scenarios, and single ventilation mode can have excessive ventilation or ventilation effect insufficient problem in the operation in-process, can harm the health and safety who gets into underground construction staff.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an intelligent control method and system for a radon-reducing ventilation system of a multi-scene underground building, so as to solve the problems that the building is damaged due to long-time ventilation radon reduction of the existing building and the effect of a single ventilation mode is poor.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
an intelligent control system of a radon-reducing ventilation system of a multi-scene underground building comprises an HVAC system, a ventilation main console and a radon-measuring instrument, wherein the ventilation main console is respectively connected with the HVAC system and the radon-measuring instrument;
the ventilation general control platform comprises a ventilation management system, a monitoring and pre-alarming system and a ventilation learning library;
the monitoring and pre-alarming system is connected with the radon measuring instrument, and the ventilation learning library is respectively connected with the HVAC system and the radon measuring instrument; the monitoring and pre-warning system provides warning information for a ventilation management system, a ventilation database is arranged in the ventilation management system, a plurality of ventilation strategies are arranged in the ventilation database, and the HVAC system operates according to the ventilation strategies; the ventilation strategy comprises fresh air ratio, air quantity, start-stop time and start-stop time of the HVAC system;
the ventilation learning library collects an actual ventilation strategy from the HVAC system, and the ventilation learning library collects an actual radon concentration variation value during the operation of the ventilation strategy from the radon measuring instrument; the ventilation learning library compares the actual radon concentration change value with the simulation radon concentration change value, and corrects the simulation radon concentration change value through the actual radon concentration change value, so as to correct the ventilation strategy and the correlation curve of radon concentration change.
The invention further improves that:
preferably, the HVAC system is a primary return air system.
Preferably, the HVAC system comprises an air conditioning system, the air conditioning system comprises an air treatment module, and the air treatment module is connected with a fan;
the air treatment module is connected with a fresh air port, an air supply port and an air return port; the return air port is connected with a return air pipe;
the return air pipe is connected with the fan through a fresh air ratio regulating valve;
an air quantity regulating valve is arranged in the fan and connected with the air supply port.
Preferably, a daily mode and an emergency mode are set in the ventilation database, the daily mode corresponds to a plurality of ventilation strategies, and the emergency mode corresponds to a plurality of ventilation strategies.
Preferably, the daily pattern is intermittent ventilation, with a first evaluation index of whether a safe level of radon concentration can be achieved, to ventilate the system time operation time T during the expected operation period T out The length is the second evaluation index.
Preferably, the emergency mode is continuous ventilation to predict the response time T pre The radon concentration safety level is realized as a target, and the ventilation safety concentration initial time period t is taken as 1 ˊ<Response time T pre Is the object.
Preferably, the radon concentration comprises a series of characteristic values including: initial concentration C after sealing under long-term sealing condition i Concentration safety threshold C 0 The method comprises the steps of carrying out a first treatment on the surface of the High air quantity q H Stroke volume q M Low air quantity q L Different fresh air ratios phi 1 、φ 2 、φ 3 Concentration C of ventilation extreme value under ventilation working condition 1 Initial duration t of ventilation extremum concentration 1 Extreme concentration no-ventilation safety time t 2 And a ventilation extremum concentration period duration t 3 。
Preferably, the radon measuring instrument comprises a working area radon measuring instrument and a non-working area radon measuring instrument.
Preferably, the radon measuring instrument in the working area is 1.2-2 m away from the ground, and the radon measuring instrument in the non-working area is 0.5m lower than the radon measuring instrument in the working area.
According to the control method of the intelligent control system of the radon-reducing ventilation system of the underground building, which is suitable for multiple scenes, the radon meter monitors radon concentration in the underground building in real time, when the radon concentration in the underground building exceeds a safety threshold, the monitoring and pre-alarming system starts an early-warning mode and a self-checking mode, the ventilation management system adjusts a ventilation strategy, and the HVAC system executes the ventilation strategy.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses an intelligent control system of a radon-reducing ventilation system of a underground building, which is suitable for multiple scenes, and comprises an HVAC system, a ventilation main console, a radon-measuring instrument and a connecting cable, wherein the ventilation main console is respectively connected with the HVAC system and the radon-measuring instrument; the monitoring and pre-warning system provides warning information for the ventilation management system, the ventilation management system selects a ventilation strategy to be used through the numerical values transmitted by the monitoring and pre-warning system, and the ventilation learning library updates the ventilation database in real time. The monitoring and pre-alarming system monitors the actual operation effect in real time, and ensures the radon concentration safety level in the building, particularly in the working area; meanwhile, the radon attenuation characteristic is considered, an operation ventilation strategy and an operation effect are taken as a database, a ventilation learning library is constructed, and then the ventilation database is updated.
The invention also discloses a control method of the intelligent control system of the radon-reducing ventilation system of the underground building, which has the basic function of realizing that personnel of the underground building can guarantee to provide radon concentration level meeting health and hygiene standards, fully utilizes the advantages of different ventilation strategies through the pre-judgment of energy consumption of each ventilation strategy under different scene demands of a user side, simultaneously has the monitoring, early warning and alarming systems, considers radon attenuation characteristics, and achieves the radon-reducing effect of the ventilation system with high efficiency and energy conservation under the condition that the whole radon-reducing period is specific to the underground building in multiple scenes.
Drawings
FIG. 1 shows a diagram of an intelligent control system of a radon-reducing ventilation system of a underground building suitable for multiple scenes;
FIG. 2 is a block diagram of an HVAC system;
FIG. 3 shows a graph of radon concentration in an underground construction under intermittent ventilation;
the method comprises the following steps: 1-an HVAC system; 2-a ventilation main control desk; 3-radon measuring instrument; 4-connecting the cable; 11-an air conditioning wind system; 111-fans; 112-a fresh air pipe; 113-an air supply pipe; 114-an exhaust pipe; 115-an air return pipe; 116-an air supply port; 117-return air inlet; 118-a fresh air port; 119-air quantity regulating valve; 1110-fresh air ratio regulating valve; 1111-a fan damping and silencing device; 1112-an air treatment module; 21-a ventilation management system; 22-a monitoring and pre-warning system; 23-a ventilated learning library; 31-a radon measuring instrument in a working area; 32-non-working area radon measuring instrument.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
As shown in fig. 1 and 2, an intelligent control method and system for a radon-reducing ventilation system of a multi-scene underground building comprise an HVAC system 1, a ventilation main console 2, a radon meter 3 and a connecting cable 4, wherein the HVAC system 1 comprises an air conditioning system 11; the ventilation general console 2 comprises a ventilation management system 21, a monitoring and pre-alarming system 22 and a ventilation learning library 23; the radon measuring instrument 3 comprises a working area radon measuring instrument 31 and a non-working area radon measuring instrument 32; the connecting cable 4 connects each device in the system to the ventilation main console 2; the operation values of the equipment can be transmitted to the ventilation main console 2; the working state of the equipment can be intelligently controlled in real time by the ventilation main console 2;
the HVAC system 1 comprises an air conditioning system 11 with radon-reducing filtering function and cold and hot regulating function;
the air conditioning system 11 comprises a fan 111, a new air pipe 112, an air supply pipe 113, an exhaust pipe 114, an air return pipe 115, an air supply air port 116, an air return air port 117, a new air port 118, an air quantity adjusting valve 119, a new air ratio adjusting valve 1110, a fan damping and silencing device 1111 and an air processing module 1112; the fan 111 is at least one main machine and one standby machine which meet the maximum required air quantity; the fan damping and silencing device 1111 is arranged on the outer surface of the fan 111; the fan damper and muffler 1111 is a commercially available component.
The air treatment module 1112 has a filtration module, a heating/cooling module, and other air treatment modules;
fresh air port 118, supply air port 116 and return air port 117 connect air treatment module 1112 and connect, and air treatment module 1112 and fan 111 connect, and fresh air port 118 and fresh air duct 112 connect, and supply air port 116 and blast pipe 113 connect, and return air duct 115 and return air port 117 connect.
The fresh air ratio adjusting valve 1110 is arranged at the joint of the return air pipe 115 and the fan 111 and adjusts the return air amount entering the air treatment equipment again.
An air volume adjusting valve 119 is disposed in the blower 111 to adjust the air volume sent from the blower 111 to the air supply port 116.
One end of the exhaust duct 114 is connected to the blower 111, and the other end of the exhaust duct 114 is connected to the outside.
The HVAC system 1 is preferably a primary return air system, and in the process of intensively processing air by the air processing device, the indoor return air and the outdoor fresh air are mixed, cooled and dehumidified by the surface cooler, and then directly sent into an air-conditioning room or heated and then sent into the air-conditioning room.
The ventilation total console 2 comprises a ventilation management system 21, a monitoring and pre-warning system 22 and a ventilation learning warehouse 23.
The ventilation management system 21 is provided with a numerical simulation method, and an initial ventilation database is built through FLUENT numerical simulation; the initial ventilation database forms a ventilation database by constantly updating internal data through the learning database.
More specifically, a plurality of ventilation strategies and radon concentration variation curves are stored in a ventilation database, the ventilation strategies and radon concentration variation initial curves are obtained through FLUENT numerical simulation, the initial curves are obtained through FLUENT according to the existing underlying building and constant radon exhalation rate, radon concentration variation under different preset ventilation strategies is obtained through FLUENT, a series of characteristic values are provided, and the database formed by the initial curves is the initial database. Because the radon extraction rate of the building is attenuated, and the activity of personnel in the building also has an influence on the radon concentration change, the ventilation database is corrected by setting the ventilation learning library. The method is equivalent to updating and correcting the radon concentration change curve under the ventilation strategy by using the real-time operation radon concentration change curve.
The ventilation learning library 23 collects real-time ventilation and fresh air ratio from the HVAC system 1 and collects actual radon content from the radon meter 3, the collected ventilation and fresh air ratio is transmitted to the ventilation database, simulated radon content in data is obtained through a ventilation strategy and radon concentration change curve, the actual radon content and the simulated radon content are compared in the ventilation learning library 23, the simulated radon content is corrected in real time through the actual radon content, and then the ventilation strategy and radon concentration change curve is corrected in real time.
The ventilation strategy specifically comprises fresh air ratio, air quantity, start-stop time of the HVAC system, specific start-up time and stop time.
The radon concentration is a series of characteristic values, and the specific characteristic values comprise initial concentration C after sealing under long-time sealing condition i Concentration safety threshold C 0 Different air volumes: high air quantity q H Stroke volume q M Low air quantity q L Different fresh air ratios phi 1 、φ 2 、φ 3 Concentration C of ventilation extreme value under ventilation working condition 1 Initial duration t of ventilation extremum concentration 1 Extreme concentration no-ventilation safety time t 2 Ventilation extremum concentration period length t 3 。
Concentration safety threshold C 0 A design level radon concentration defined for a relevant specification applicable to the subsurface structure;
concentration of ventilation extremum C 1 The average radon concentration of the room under a certain ventilation condition can reach the lowest level;
initial duration t of ventilation extremum concentration 1 To be under ventilation from initial concentration C after sealing i Reduced to the ventilation extreme concentration C 1 Is a time period of (2);
extreme concentration non-ventilation safety time t 2 To increase from the aeration extreme concentration to the concentration safety threshold C under aeration-free conditions 0 Is a time period of (2);
ventilation extremum concentration period duration t 3 To be covered by the concentration safety threshold C under ventilation conditions 0 Reduced to the ventilation extreme concentration C 1 Is a time period of (2);
different air volumes high air volume q H Stroke volume q M Low air quantity q L Different values in the air volume range are met under the precondition of ventilation radon reduction, cold supply, heat supply, noise and the like;
different fresh air ratios phi with different air volumes 1 、φ 2 、φ 3 The fresh air ratio is 0, and the fresh air ratio is 1;
initial duration t of ventilation extremum concentration 1 Initial concentration C after sealing under ventilation conditions i Reduced to the concentration safety threshold C 0 Is a time period of (2);
further, the ventilation management system 21 has a daily mode and an emergency mode, and when someone enters the building work, the user side selects the daily mode or the emergency mode according to the requirement, and inputs the operation period T or the expected response time T pre The method comprises the steps of carrying out a first treatment on the surface of the Run period T, response time T pre Parameters are used for the correlation of different modes of different scenes of the underground building.
The daily mode has long operation time, adopts intermittent ventilation, and uses radon concentration capable of realizing safe level as first evaluation index to ventilate system time operation time T in expected operation period T out The ventilation policy and ventilation management system 21 preferably invokes a radon concentration safety level and a run time T for a second evaluation index out Shortest ventilation strategy. After the corresponding ventilation strategies are adopted, if the two evaluation indexes cannot be met, and the ventilation strategies cannot meet the requirements, the ventilation strategies are replaced or simulation curves in a ventilation database are adjusted.
The emergency mode has the characteristics of realizing the radon concentration safety level rapidly and the like so as to predict the response time T pre The radon concentration safety level is realized quickly in the air, and the ventilation safety concentration initial time period t 1 ˊ<Response toM T pre For policy purposes, the ventilation policy ventilation management system 21 preferably invokes a ventilation policy with the smallest air volume and the lowest power consumption; and after the corresponding ventilation strategy is adopted, if the target cannot be met, replacing the ventilation strategy or adjusting the simulation curve in the ventilation database.
The ventilation management system 21 is responsible for invoking a ventilation strategy in a ventilation learning library according to operation requirements, controlling the HVAC system 1, and simultaneously receiving monitoring and alarm signals of the monitoring and alarm system 2 to monitor operation conditions. The called ventilation strategy is to take whether the safe radon concentration can be reached or not as a first basic selection index, the running time duration and the power consumption of the ventilation system in the expected running time as a second selection index, and the ventilation strategy which can reach the safe radon concentration and has the shortest running time duration and the lowest power consumption of the HVAC system in the expected running time is selected in a ventilation database.
The monitoring and pre-alarming system 22 receives the monitoring signal of the radon measuring instrument 3, monitors the radon concentration level of different areas in the room, if the radon concentration exceeds the safety level, and performs pre-alarming and feeds back to the ventilation management system 21.
The radon measuring instrument 3 can monitor radon concentration in real time and is connected with the ventilation main console 2 through a connecting cable 4, and the radon concentration condition of the measuring point is converted into a transmissible signal and transmitted to the ventilation main console 2;
the radon measuring instruments 3 are preferably arranged in two groups, including a working area radon measuring instrument 31 and a non-working area radon measuring instrument 32;
the radon measuring instrument 31 in the working area is preferably arranged between the sitting posture and the standing posture of the person, and is 1.2 m-2 m away from the ground, and the occasion of the special working area can be adjusted according to the actual situation; the radon measuring instrument 32 in the non-working area is preferably 0.5m lower than the radon measuring instrument 31 in the working area, and is used for collecting the information of the radon concentration exceeding standard pre-alarm;
the monitoring and pre-alarming system 22 analyzes the data of the radon measuring instrument 31 in the working area and the radon measuring instrument 32 in the non-working area in real time;
when the radon measuring instrument 32 data in the non-working area is higher than the concentration safety threshold C 0 The non-working area is pre-warned, the monitoring and pre-warning system 22 enables the pre-warning mode and the self-checking mode, and whether the working area is caused according to the original ventilation strategy or not needs to be evaluatedRadon contamination, a new ventilation strategy is invoked based on the existing radon concentration level and radon reduction requirements for the expected run time. The ventilation management system 21 re-evaluates and invokes a ventilation policy, and the self-checking mode is to check whether each device is operating normally, if there is a fault, and prompt an alarm. Specifically, the evaluation refers to whether there is a tendency for the radon concentration in the non-working area to continue to rise. If the radon concentration in the non-working area is kept stable or has a descending trend, the radon-free air-conditioning system operates according to the original ventilation strategy, radon pollution in the working area is avoided, and the original ventilation strategy can be maintained;
if the radon concentration in the non-working area has an ascending trend, the radon-free ventilation system operates according to the original ventilation strategy, radon pollution exists in the working area, and the ventilation strategy needs to be called again
When the data of the radon measuring instrument 31 in the working area is higher than the concentration safety threshold C 0 The monitoring and pre-alarm system 22 enables an alarm mode and a self-checking mode, the ventilation management calls an emergency mode ventilation strategy, and the self-checking mode is used for checking whether each device works normally or not, if faults exist, the alarm is prompted;
the intelligent control method and the system for the radon-reducing ventilation system of the underground building are suitable for the radon-reducing ventilation system of the daily mode, the emergency mode, the variable air volume and the variable fresh air ratio of multiple scenes, according to the pre-judgment of the energy consumption of each ventilation strategy under the different scene demands of a user side, the advantages of different ventilation strategies are fully utilized, the optimal ventilation strategy is adjusted according to the radon-reducing requirements of different scenes, meanwhile, the intelligent control method and the intelligent control system for the radon-reducing ventilation system of the underground building are provided with monitoring, early warning and alarming systems, and the updated ventilation management system is updated and upgraded by considering the decay characteristics of radon, and are a pre-judgment intelligent selection, dynamic change, safe and energy-saving, and fully exert the maximum radon-reducing capacity of each ventilation strategy.
As shown in FIG. 3 and the following table 1, the change of the volume average radon concentration level of continuous ventilation of the underground building is shown in FIG. 3, the radon concentration level can be effectively reduced under the ventilation condition, the ventilation extremum concentration C1 under the ventilation working conditions of different air volumes (high air volume qH, medium air volume qM, low air volume qL) and different fresh air ratios (phi 1, phi 2 and phi 3), the ventilation extremum concentration initial time period t1, the extremum concentration non-ventilation safety time period t2 and the ventilation extremum concentration period time period t3.
Table 1 ventilation management system initial database information table
The control method of the system comprises the following steps:
the radon measuring instrument 3 monitors the radon concentration in the underground building in real time, the radon measuring instrument 31 in the working area monitors the radon concentration in the working area, and the radon measuring instrument 32 in the non-working area monitors the radon concentration in the non-working area; when the radon measuring instrument 32 data in the non-working area is higher than the concentration safety threshold C 0 The non-working area is pre-warned, the monitoring and pre-warning system 22 starts the pre-warning mode and the self-checking mode, whether radon pollution is caused to the working area according to the original ventilation strategy is required to be evaluated, and a new ventilation strategy is required to be invoked according to the radon concentration level and radon reduction requirement of the expected running time. When the data of the radon measuring instrument 31 in the working area is higher than the concentration safety threshold C 0 The monitoring and pre-alarm system 22 enables an alarm mode and a self-test mode, the ventilation management invokes an emergency mode ventilation strategy, and the self-test mode is used for checking whether each device works normally or not, if faults exist, the alarm is prompted.
Different ventilation strategies adjust the fresh air ratio of the HVAC system 1 by adjusting the fresh air ratio adjustment valve 1110 and the air volume of the HVAC system 1 by adjusting the air volume adjustment valve 119.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The intelligent control system for the radon-reducing ventilation system of the underground building suitable for multiple scenes is characterized by comprising an HVAC system (1), a ventilation main console (2) and a radon measuring instrument (3), wherein the ventilation main console (2) is respectively connected with the HVAC system (1) and the radon measuring instrument (3);
the ventilation general control platform (2) comprises a ventilation management system (21), a monitoring and pre-alarming system (22) and a ventilation learning warehouse (23);
the monitoring and pre-alarming system (22) is connected with the radon measuring instrument (3), and the ventilation learning library (23) is respectively connected with the HVAC system (1) and the radon measuring instrument (3); the monitoring and pre-warning system (22) provides warning information for the ventilation management system (21), a ventilation database is arranged in the ventilation management system (21), a plurality of ventilation strategies are arranged in the ventilation database, and the HVAC system (1) operates according to the ventilation strategies; the ventilation strategy comprises fresh air ratio, air quantity, start-stop time and start-stop time of the HVAC system (1);
the ventilation learning library (23) collects an actual ventilation strategy from the HVAC system (1), and the ventilation learning library (23) collects an actual radon concentration change value when the ventilation strategy operates from the radon meter (3); the ventilation learning library (23) compares the actual radon concentration change value with the simulated radon concentration change value, and corrects the simulated radon concentration change value through the actual radon concentration change value so as to correct the related curve of the ventilation strategy and radon concentration change;
the HVAC system (1) is a primary return air system;
a daily mode and an emergency mode are set in the ventilation database, the daily mode corresponds to a plurality of ventilation strategies, and the emergency mode corresponds to a plurality of ventilation strategies;
the daily mode is intermittent ventilation, and the radon concentration of the safe level can be realized is used as a first evaluation index to ventilate the system time operation time T in the expected operation period T out The length is a second evaluation index;
the emergency mode is continuous ventilation to predict response time T pre The radon concentration safety level is realized as a target, and the ventilation safety concentration initial time period t is taken as 1 ˊ<Response time T pre Is the object.
2. The intelligent control system of the radon-reducing ventilation system of the underground building suitable for multiple scenes according to claim 1, wherein the HVAC system (1) comprises an air conditioning system (11), the air conditioning system (11) comprises an air processing module (1112), and the air processing module (1112) is connected with a fan (111);
the air treatment module (1112) is connected with a fresh air port (118), an air supply port (116) and an air return port (117) at the same time; the return air port (117) is connected with a return air pipe (115);
the return air pipe (115) is connected with the fan (111) through a fresh air ratio regulating valve (1110);
an air quantity adjusting valve (119) is arranged in the fan (111), and the air quantity adjusting valve (119) is connected with an air supply air port (116).
3. The intelligent control system of a radon-reducing ventilation system for a multi-scenario underground building of claim 1, wherein the radon concentration comprises a series of eigenvalues, the eigenvalues comprising: initial concentration C after sealing under long-term sealing condition i Concentration safety threshold C 0 The method comprises the steps of carrying out a first treatment on the surface of the High air quantity q H Stroke volume q M Low air quantity q L Different fresh air ratios phi 1 、φ 2 、φ 3 Concentration C of ventilation extreme value under ventilation working condition 1 Initial duration t of ventilation extremum concentration 1 Extreme concentration no-ventilation safety time t 2 And a ventilation extremum concentration period duration t 3 。
4. The intelligent control system of the radon-reducing ventilation system of the underground building suitable for multiple scenes according to claim 1, wherein the radon-measuring instrument (3) comprises a working area radon-measuring instrument (31) and a non-working area radon-measuring instrument (32).
5. The intelligent control system of the radon-reducing ventilation system of the underground building suitable for multiple scenes according to claim 4, wherein the radon-measuring instrument (31) in the working area is 1.2-2 m away from the ground, and the radon-measuring instrument (32) in the non-working area is 0.5m lower than the radon-measuring instrument (31) in the working area.
6. A control method of an intelligent control system of a radon-reducing ventilation system of a underground building suitable for multiple scenes according to claim 1, characterized in that radon measuring instrument (3) monitors radon concentration in the underground building in real time, when radon concentration in the underground building exceeds a safety threshold, monitoring and pre-alarm system (22) enables early-warning mode and self-checking mode, ventilation management system (21) adjusts ventilation strategy, HVAC system (1) executes ventilation strategy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111518355.6A CN114183901B (en) | 2021-12-13 | 2021-12-13 | Intelligent control method and system for radon-reducing ventilation system of underground building suitable for multiple scenes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111518355.6A CN114183901B (en) | 2021-12-13 | 2021-12-13 | Intelligent control method and system for radon-reducing ventilation system of underground building suitable for multiple scenes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183901A CN114183901A (en) | 2022-03-15 |
| CN114183901B true CN114183901B (en) | 2023-07-21 |
Family
ID=80543456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111518355.6A Active CN114183901B (en) | 2021-12-13 | 2021-12-13 | Intelligent control method and system for radon-reducing ventilation system of underground building suitable for multiple scenes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183901B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9927535B2 (en) * | 2012-06-06 | 2018-03-27 | Siemens Industry, Inc. | Radon detection and mitigation in a building automation system |
| CN106642587A (en) * | 2016-12-29 | 2017-05-10 | 佛山亚图信息技术有限公司 | Method and device for improving air quality |
| CN108520313A (en) * | 2018-03-16 | 2018-09-11 | 天津大学 | A kind of draft type computing platform computational methods |
| CN210427524U (en) * | 2019-07-26 | 2020-04-28 | 安徽祥源科技股份有限公司 | Laboratory gas on-line monitoring and intelligent control system |
| CN111043699A (en) * | 2019-12-12 | 2020-04-21 | 核工业北京化工冶金研究院 | Intelligent ventilation radon discharging system applied to workplace |
-
2021
- 2021-12-13 CN CN202111518355.6A patent/CN114183901B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114183901A (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11268724B2 (en) | Controlling method of an indoor air environment quality coordination and control system based on multiple-parameter evaluation | |
| Wang | Dynamic simulation of building VAV air-conditioning system and evaluation of EMCS on-line control strategies | |
| Wang et al. | Fault-tolerant control for outdoor ventilation air flow rate in buildings based on neural network | |
| JP4334176B2 (en) | Building energy conservation evaluation monitoring device | |
| CN106949598A (en) | Network center's machine room energy-saving optimization method when network traffic load changes | |
| KR20200037623A (en) | CO2 control method for variable air volume system | |
| CN210512165U (en) | Air source heat pump air heater | |
| CN114183901B (en) | Intelligent control method and system for radon-reducing ventilation system of underground building suitable for multiple scenes | |
| CN114484725B (en) | Air conditioner fresh air natural cooling dynamic control method and device | |
| CN112665243A (en) | Air conditioner control method, control device and system for breeding | |
| CN212457168U (en) | Oxygen content adjusting system combined with existing air conditioning system | |
| CN109698506B (en) | Response management method for flexible load interruption in building | |
| CN215832115U (en) | Intelligent new trend system of plateau pressure boost building | |
| CN109883026A (en) | A kind of air-conditioning system and its control method of independent temperature-humidity control | |
| CN117128624A (en) | Control method and device for fresh air conditioner and air conditioner management system and storage medium | |
| CN116221945A (en) | Fresh air control system for high-grade clean room | |
| CN116126060A (en) | Adjusting device and adjusting method for environment of synthetic biology laboratory | |
| CN116697500A (en) | Artificial intelligence ventilation system based on digital twin technology and control method thereof | |
| CN114659247A (en) | Online monitoring and adjusting method and system for multi-connected air conditioning system | |
| KR20050072962A (en) | Demand control ventilation system | |
| CN211233232U (en) | Comfortable fresh air adjusting system | |
| CN112628969A (en) | Airtight environment comfort air conditioning system simulating external environment change | |
| CN110953677A (en) | Integrated form operating room clean system | |
| CN104913466A (en) | Automatic control system and method for fan air supply of data center computer room | |
| CN221005403U (en) | Fresh air changing operation control device of air conditioning unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |