CN117387162B - Device and method for removing indoor formaldehyde and TVOC - Google Patents
Device and method for removing indoor formaldehyde and TVOC Download PDFInfo
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- CN117387162B CN117387162B CN202311684095.9A CN202311684095A CN117387162B CN 117387162 B CN117387162 B CN 117387162B CN 202311684095 A CN202311684095 A CN 202311684095A CN 117387162 B CN117387162 B CN 117387162B
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000007789 gas Substances 0.000 claims abstract description 55
- 238000001179 sorption measurement Methods 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 238000004458 analytical method Methods 0.000 claims abstract description 21
- 239000010815 organic waste Substances 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 238000004868 gas analysis Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 230000033228 biological regulation Effects 0.000 claims abstract description 10
- 230000014759 maintenance of location Effects 0.000 claims description 24
- 238000004088 simulation Methods 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 9
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims 4
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001276 controlling effect Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
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- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/80—Self-contained air purifiers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/95—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes
-
- 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
- F24F2110/66—Volatile organic compounds [VOC]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention relates to the technical field of harmful gas removal, in particular to a device and a method for removing indoor formaldehyde and TVOC. The device comprises an indoor formaldehyde removal device body, a TVOC device body and a monitoring regulation module. The monitoring and regulating module comprises: a temperature sensor module, a removed gas analysis controller and a temperature control mechanism. The gas removal analysis controller adjusts the temperature value by matching the temperature values at different positions, eliminates errors caused by external factors when acquiring the temperature, and obtains a temperature adjustment value according to the adjusted temperature value; and outputting a control instruction to the temperature control mechanism according to the temperature adjustment value so as to adjust the temperature of the steam generator. The temperature control mechanism regulates and controls the temperature of the steam sensor, so that the temperature value of the organic waste gas simulated adsorption device 42 is close to the optimal temperature of activated carbon adsorption, and the activated carbon adsorption effect is improved.
Description
Technical Field
The invention relates to the technical field of harmful gas removal, in particular to a device and a method for removing indoor formaldehyde and TVOC.
Background
The indoor harmful gas has huge harm to human bodies, the harmful gas such as formaldehyde is used for overstocking people, even the news layer of the illness is endless, the main harm of the formaldehyde is shown as the stimulation effect on skin mucous membrane, the formaldehyde content of indoor air for civil use is required to be less than or equal to 0.08mg/m < 3 >, and when the formaldehyde concentration in the room is too high, people can feel uncomfortable. The formaldehyde content in newly decorated rooms is high, and the new decorated rooms are the main causes of a plurality of diseases. One of the methods for removing harmful gases such as formaldehyde is to adsorb the harmful gases by activated carbon, thereby reducing the content of the harmful gases in the room. The activated carbon absorber can be placed in places where formaldehyde and TVOC are required to be treated indoors, such as furniture, corners and the like, and the good removal of indoor harmful gases and the like can be realized.
In the existing activated carbon adsorber device, the steam generator is used as a key device, the influence on the adsorption performance of activated carbon is large, if the temperature of steam in the steam generator is unstable, the temperature control of the adsorption process is inaccurate, so that the adsorption effect is influenced, and when the temperature of the steam generator is unstable, the capability of the activated carbon for adsorbing harmful gases is influenced. For example, if the steam temperature is too high, deactivation or decomposition of the adsorbent may result, while too low a temperature may decrease the adsorption capacity of the adsorbent.
Disclosure of Invention
In order to solve the technical problem that the capability of the activated carbon for adsorbing harmful gas is affected when the temperature of the steam generator is unstable, the invention aims to provide a device and a method for removing indoor formaldehyde and TVOC, and the adopted technical scheme is as follows:
in a first aspect, the invention provides a device for removing indoor formaldehyde and TVOC, which comprises a device body for removing indoor formaldehyde and TVOC, wherein the device body for removing indoor formaldehyde and TVOC further comprises a monitoring regulation module, and the monitoring regulation module comprises: a temperature sensor module, a removed gas analysis controller and a temperature control mechanism;
the signal output end of the temperature sensor module is connected with the signal input end of the gas removal analysis controller, the signal output end of the gas removal analysis controller is connected with the signal input end of a temperature control mechanism, and the temperature control mechanism is used for adjusting the temperature of a steam generator in the indoor formaldehyde removal and TVOC removal device;
the temperature sensor module is used for respectively acquiring temperature values of the steam generators at different positions and outputting the temperature values to the removed gas analysis controller;
the gas removal analysis controller respectively decomposes each temperature value sequence to obtain a temperature component; matching temperature components corresponding to the temperature value sequences at different positions to obtain a temperature component pair, and matching temperature values in the temperature component pair to obtain a temperature pair; acquiring the slope of the DTW path corresponding to the temperature in each temperature component pair, marking the slope as the path slope, and determining the reserved temperature and the unreserved temperature; determining the fluctuation of each temperature component pair according to the fluctuation degree of the path slope corresponding to all the reserved temperatures in each temperature component pair; determining the consistency of each temperature component pair according to the distribution condition of the path slopes corresponding to all the unreserved temperatures in each temperature component pair; determining the weight of each temperature component according to the fluctuation and consistency of each temperature component pair; reconstructing a temperature sequence through the temperature component based on the weight of the temperature component to obtain an adjusted temperature value sequence; obtaining a temperature adjustment value according to the temperature adjustment value sequence; and outputting a control instruction to the temperature control mechanism according to the temperature adjustment value so as to adjust the temperature of the steam generator.
Preferably, the monitoring and control module further comprises a weight detector for acquiring the weight of the activated carbon.
Preferably, the obtaining the temperature adjustment value according to the temperature adjustment value sequence includes:
acquiring a weight difference value of adjacent weights in the weight sequence of the activated carbon;
recording a time point corresponding to the previous weight corresponding to the maximum weight difference value of the weight sequence of the activated carbon as the optimal time; taking the temperature of the steam generator at the optimal time as an optimal temperature value;
and taking the difference value of the real-time temperature data in the optimal temperature value and the temperature value sequence as a temperature adjustment value.
Preferably, the determining the volatility of each temperature component pair according to the fluctuation degree of the path slope corresponding to all the remaining temperatures in each temperature component pair includes:
for each temperature component pair, the number of path slopes corresponding to each reserved temperature is obtained and is recorded as reserved path number, and the variance of the reserved path number of all reserved temperatures is used as the volatility of the temperature component pair.
Preferably, the determining the consistency of each temperature component pair according to the distribution condition of the path slopes corresponding to all the unreserved temperatures in each temperature component pair includes:
constructing a corresponding slope histogram according to the occurrence frequency of the path slope of each non-reserved temperature in the temperature component pair; dividing the slope histogram, and dividing the path slope into a plurality of slope classes;
for the path slope in each slope class, marking the average value of the non-retention temperature and the adjacent non-retention temperature corresponding to each path slope as the path temperature average value, and constructing a first class by the path temperature average value corresponding to each slope class;
taking the variance of all unreserved temperatures in the temperature component pair as the first variance of the temperature component pair;
taking the variance of the path temperature mean value in the first category as a second variance; calculating the inter-class variance of the temperature component pair according to the first variances of the temperature component pair and the second variances of all the corresponding first classes;
and taking the difference value between the preset regulating value and the inter-class variance as the consistency of the temperature component pair.
Preferably, the determining the weight of the temperature component according to the fluctuation and the consistency of each temperature component pair includes:
the product of the fluctuation and consistency of each temperature component pair is taken as the weight of the temperature component.
Preferably, the matching the temperature components corresponding to the temperature value sequences at different positions to obtain a temperature component pair includes:
the temperature value sequence comprises a steam generator temperature value sequence and a pipeline temperature value sequence;
and using a KM matching algorithm, taking a temperature component corresponding to the steam generator temperature value sequence as a left node, taking a temperature component corresponding to the pipeline temperature value sequence as a right node, taking the similarity of the two temperature components as an edge weight value between the two corresponding nodes, and matching the temperature components corresponding to the steam generator temperature value sequence and the pipeline temperature value sequence to obtain a temperature component pair.
Preferably, the method for determining the retention temperature and the non-retention temperature comprises the following steps:
taking the steam generator temperature value with the number of the corresponding DTW paths being larger than a preset path threshold value as a retention temperature; the other temperature values in the steam generator temperature value sequence than the retention temperature are taken as non-retention temperatures.
Preferably, the matching the temperature values in the temperature component pair to obtain a temperature pair includes:
and matching the temperature values in the two temperature components in the temperature component pair by using a DTW algorithm to obtain a temperature pair corresponding to the two temperature components in the temperature component pair.
In a second aspect, another embodiment of the present invention provides a method for removing formaldehyde and TVOC in a room, comprising the steps of:
decomposing each temperature value sequence to obtain a temperature component; matching temperature components corresponding to the temperature value sequences at different positions to obtain a temperature component pair, and matching temperature values in the temperature component pair to obtain a temperature pair; acquiring the slope of the DTW path corresponding to the temperature in each temperature component pair, marking the slope as the path slope, and determining the reserved temperature and the unreserved temperature; determining the fluctuation of each temperature component pair according to the fluctuation degree of the path slope corresponding to all the reserved temperatures in each temperature component pair; determining the consistency of each temperature component pair according to the distribution condition of the path slopes corresponding to all the unreserved temperatures in each temperature component pair; determining the weight of each temperature component according to the fluctuation and consistency of each temperature component pair; reconstructing a temperature sequence through the temperature component based on the weight of the temperature component to obtain an adjusted temperature value sequence; obtaining a temperature adjustment value according to the temperature adjustment value sequence; and outputting a control instruction to a temperature control mechanism according to the temperature adjustment value so as to adjust the temperature of the steam generator.
The embodiment of the invention has at least the following beneficial effects:
in order to solve the technical problem that the capability of the activated carbon for absorbing harmful gas is affected when the temperature of the steam generator is unstable. According to the invention, the monitoring and regulating module is arranged to monitor the temperature in the steam generator, the obtained temperature is corrected, the error caused by external factors when the temperature is obtained is eliminated, and the temperature regulation of the steam generator is realized based on the corrected temperature, so that the temperature is known to be the optimal temperature for activated carbon adsorption as far as possible, and the activated carbon adsorption effect is improved. The monitoring and regulating module obtains temperature components with similar changes through the principle that hysteresis similarity exists among temperature values at different positions of the steam generator, and the temperature components are convenient to correct acquired temperatures later. And the temperature adjusting value sequence and the temperature adjusting value are obtained by changing similar temperature components, and a control instruction is output to the temperature control mechanism according to the temperature adjusting value so as to adjust the temperature of the steam generator, so that the temperature value at the position of the organic waste gas simulated adsorption device 42 is close to the optimal temperature of activated carbon adsorption, and the activated carbon adsorption effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions and advantages of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a device body for removing formaldehyde and TVOC in a room according to an embodiment of the present invention;
FIG. 2 is a block diagram of a monitoring and control module according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for removing formaldehyde and TVOC in a room according to an embodiment of the present invention;
the reference numerals in fig. 1 are: 41. an organic waste gas simulation generating device communicated through a pipeline; 42. an organic waste gas simulation adsorption device; 43 steam generator; 44. a condenser; 45. a gas-liquid separator; 46. resolving the storage tank; 47. a universal wheel; 48. a movable metal frame; 49. a first temperature sensor; 50. a first fixing bracket; 51. a first heat shield; 52. a second temperature sensor; 53. a second fixing bracket; 54. a second heat shield;
the reference numerals in fig. 2 are: 49. a first temperature sensor; 50. a first fixing bracket; 51. a first heat shield; 52. a second temperature sensor; 53. a second fixing bracket; 54. and a second heat shield.
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following description refers to the specific implementation, structure, characteristics and effects of a device and a method for removing formaldehyde and TVOC in a room according to the invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" means that the embodiments are not necessarily the same. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The device for removing indoor formaldehyde and TVOC comprises a device body for removing indoor formaldehyde and TVOC, and further comprises a monitoring and regulating module, wherein the monitoring and regulating module is used for detecting and analyzing the temperature of a steam generator in the device for removing indoor formaldehyde and TVOC, and therefore comprises a temperature sensor module, a gas removal analysis controller and a temperature control mechanism, the temperature sensor module is connected with the gas removal analysis controller, the gas removal analysis controller is used for data processing and machine control, the chip type is an FPGA (field programmable gate array), and the chip type is used for receiving information of the temperature sensor module and controlling the temperature control mechanism.
The invention provides a device and a method for removing indoor formaldehyde and TVOC by combining the specific description of the drawings.
Referring to fig. 1, a block diagram of an apparatus body for removing indoor formaldehyde and TVOC according to an embodiment of the present invention is shown, where the apparatus body for removing indoor formaldehyde and TVOC includes: the organic waste gas simulation generating device 41, the organic waste gas simulation adsorbing device 42, the steam generator 43, the condenser 44, the gas-liquid separator 45, the analysis tank 46, the universal wheel 47, the movable metal frame 48, the first temperature sensor 49, the first fixed bracket 50, the first heat shield 51, the second temperature sensor 52, the second fixed bracket 53 and the second heat shield 54 are communicated through pipelines.
The signal output end of the temperature sensor module is connected with the signal input end of the gas removal analysis controller, the signal output end of the gas removal analysis controller is connected with the signal input end of the temperature control mechanism, and the temperature control mechanism is used for adjusting the temperature of the steam generator in the indoor formaldehyde removal and TVOC device. The temperature sensor module is used for acquiring temperature values at different positions of the steam generator, and in the embodiment of the invention, the temperatures of the steam generator and the pipeline connected with the steam generator are respectively acquired and output to the gas removal analysis controller, wherein the temperature values comprise the temperature value of the steam generator and the temperature value of the pipeline.
In the embodiment of the present invention, the first temperature sensor 49 and the second temperature sensor 52 form a temperature sensor module, and in other embodiments, more temperature sensors may form a temperature sensor module, or the temperature sensor module includes a slidable device, and the temperature sensor is movable, so that the temperature sensor moves to different positions, and temperature values at different positions are collected. In the embodiment of the invention, the temperature control mechanism realizes the purpose of regulating and controlling the temperature of the steam generator by controlling the fuel supply. In other embodiments, the heating device can also be used as a temperature control mechanism to realize the temperature regulation and control of the steam generator.
In the embodiment of the invention, an organic waste gas simulation generating device 41, an organic waste gas simulation adsorbing device 42, a steam generator 43, a condenser 44, a gas-liquid separator 45 and a resolving storage tank 46 which are communicated through pipelines are all fixed in a movable metal frame 48 with universal wheels 47; the organic waste gas simulation generating device 41 communicated through a pipeline can generate organic waste gas similar to that generated in a production workshop, the organic waste gas simulation generating device is connected with the organic waste gas simulation adsorbing device 42 through a pipeline, the organic waste gas simulation adsorbing device 42 is simultaneously connected with the steam generator 43 and the condenser 44, the condenser 44 is communicated with the gas-liquid separator 45, the gas-liquid separator adopts a three-way structure, the separated gas pipe is led to the steam generator 43, and the liquid pipe is communicated with the analysis storage tank 46. Referring to fig. 2, fig. 2 is a structural diagram of a monitoring and controlling module, the present invention adds a first temperature sensor 49, a first fixing bracket 50, a first heat shield 51, a second temperature sensor 52, a second fixing bracket 53, a second heat shield 54 and a weight detector based on the original device, wherein the weight detector is installed below an activated carbon adsorber.
The first temperature sensor 49 is used for detecting the temperature in the steam generator 43, and meanwhile, the first temperature sensor 49 is connected with a gas removal analysis controller and used for data processing and machine control, and the chip type is as follows: and (5) FPGA. The removal gas analysis controller receives information from the first temperature sensor 49 and the second temperature sensor 52, and transmits the result of processing the data to the temperature control mechanism of the steam generator. The first fixing bracket 50 serves to fix the first temperature sensor 49 to the outer wall of the steam generator 43. The first heat shield 51 eliminates the influence of the ambient temperature when the ambient temperature of the steam generator is high or the sunlight is direct, which may cause the temperature sensor on the outer side wall to be influenced by the ambient temperature, so that the measured temperature is higher than the actual temperature; the first heat shield 51 is thus provided, which has no heat-insulating surface only on the side which is in contact with the outer side wall of the steam generator, so that the temperature of the steam generator 43 can be monitored. The second temperature sensor 52 is used to monitor the temperature of the piping between the steam generator 43 and the organic waste gas simulated adsorption device 42. The second fixing bracket 53 serves to fix the second temperature sensor 52 between the steam generator 43 and the passage of the organic exhaust gas-simulating adsorption apparatus 42. The second heat shield 54 is used to exclude the influence of the ambient temperature at the steam generator 43 on the measurement value of the second temperature sensor 52. The weight detector is used for monitoring the quality of the activated carbon in real time and is arranged below the activated carbon adsorber.
The process of removing the gas analysis controller comprises the following steps: the actual temperature values at the first temperature sensor 49 and the second temperature sensor 52 can be obtained by removing the gas analysis controller, so as to obtain the change of the temperature values and the quality of the activated carbon, and then the temperature adjustment value is obtained by calculating the inside of a chip of the gas analysis controller, and the gas analysis controller is used for sending the temperature adjustment value to a control unit of the steam generator, namely a temperature control mechanism, which further regulates and controls the heating temperature at the steam sensor, so that the temperature value at the organic waste gas simulation adsorption device 42 is close to the optimal temperature for activated carbon adsorption, and the adsorption effect of the activated carbon is improved.
It should be noted that, in the embodiment of the present invention, in order to avoid the influence of the air flow and condensation of the water vapor on the temperature sensor, the temperature sensor is mounted on the outer side wall instead of the inner side wall, and at this time, when the steam sensor is in contact with the cold outer side wall, the temperature sensor on the outer side wall may be affected by the cold condensation of the water vapor, so that the measured temperature is not the actual temperature of the water vapor inside, and therefore, correction is required for the temperature value.
And because the hysteresis similarity exists in the change of the actual temperatures at the first temperature sensor 49 and the second temperature sensor 52 in the temperature propagation process, the temperature is corrected through the hysteresis similarity, so that the actual temperature at the steam generator 43 is obtained, the change relation between the temperature at the steam generator 43 and the quality of the adsorbent is constructed, the optimal temperature is obtained, and the actual temperature at the steam generator 43 is adjusted to be the optimal temperature, so that the adsorption effect of the activated carbon is improved.
Referring to fig. 3, a flowchart of a method for analyzing a temperature value of a steam generator by a gas removal analysis controller in an apparatus for removing formaldehyde and TVOC in a room according to an embodiment of the present invention is shown, and the method includes the following steps:
step S100, decomposing each temperature value sequence to obtain a temperature component; matching temperature components corresponding to the temperature value sequences at different positions to obtain a temperature component pair, and matching temperature values in the temperature component pair to obtain a temperature pair; and acquiring the slope of the DTW path corresponding to the temperature in each temperature component pair, marking the slope as the path slope, and determining the retention temperature and the non-retention temperature.
The temperature at the first temperature sensor 49 is denoted as steam generator temperature value, the temperature at the second temperature sensor 52 is denoted as pipe temperature value, taking the steam generator temperature value at the first temperature sensor 49 as an example, a temperature data sequence is constructed from the steam generator temperature values within 3min, denoted as steam generator temperature value sequence. And constructing a temperature data sequence by using the pipeline temperature values within 3min, and recording the temperature data sequence as a pipeline temperature value sequence.
And decomposing each temperature value sequence to obtain a temperature component. And carrying out classical modal decomposition (Empirical Mode Decomposition, EMD) on the temperature data sequences to obtain a plurality of IMF components, recording the IMF components as temperature components, wherein each IMF component corresponds to data of one frequency, and the plurality of temperature components of each temperature value sequence can be obtained by the same method. EMD is a method for decomposing time series data to obtain data with different frequencies, and the influence degree of condensation on temperature is different in different frequencies, so that the affected degree of each frequency can be obtained according to the hysteresis similarity of two temperature values, further the reconstructed real temperature of each place is obtained, and further the temperature adjustment is performed.
Because of the hysteresis similarity of the temperature data at the first temperature sensor 49 and the second temperature sensor 52, IMF component data with similar changes can be obtained by matching the calculated data.
The existing KM matching algorithm is a method for calculating matching through bipartite graphs, and is divided into left nodes and right nodes, all nodes on the left side belong to the same class, all nodes on the right side also belong to the same class, and each node on the left side and all nodes on the right side have edges. In the embodiment of the invention, a KM matching algorithm is utilized, a temperature component corresponding to a steam generator temperature value sequence is taken as a left node, a temperature component corresponding to a pipeline temperature value sequence is taken as a right node, similarity of the two temperature components is taken as an edge weight value between the two corresponding nodes, and the temperature components corresponding to the steam generator temperature value sequence and the pipeline temperature value sequence are matched to obtain a temperature component pair. The method for acquiring the similarity of the two temperature components comprises the following steps: firstly, acquiring dynamic time warping distances of two temperature components, which are simply called DTW distances; the difference between the preset inverse threshold and the DTW distance is taken as the similarity of the two temperature components. In the embodiment of the present invention, the value of the preset inverse threshold is 1, and in other embodiments, the value is adjusted by the practitioner according to the actual situation.
One-to-one matching of the left node and the right node can be obtained through KM matching, namely, one-to-one matching of the temperature component of the steam generator temperature value sequence and the temperature component of the pipeline temperature value sequence is realized.
It should be noted that, since there is a loss in the temperature during the transfer process, that is, there is a loss in the data of each frequency, the frequency a at the first temperature sensor 49 corresponds to the frequency data of less than a, not the frequency a, at the second temperature sensor 52, and since there is a loss in the temperature, the data of the same frequency is smoothed from the organic exhaust gas simulated adsorption device 42 to the position between the organic exhaust gas simulated adsorption device 42 and the steam generator 43, as if the frequency curve at the organic exhaust gas simulated adsorption device 42 is smoothed, and at the same time, the smoothing degree of most of the frequencies with less noise is similar, so in KM matching of the frequencies, the frequency curve with the largest occurrence number of smoothing coefficients in the matching relationship is regarded as the frequency curve with less noise, that is, the influence of the condensation of the water vapor is small.
After obtaining the temperature component pair, matching the temperature values in the temperature component pair to obtain the temperature pair, specifically: and matching the temperature values in the two temperature components in the temperature component pair by using a DTW algorithm to obtain a temperature pair corresponding to the two temperature components in the temperature component pair.
And then, for the temperature pairs in each one-to-one matched component pair, acquiring the slope of the DTW path corresponding to the temperature pair in each temperature component pair, marking the slope as the path slope, and determining the retention temperature and the non-retention temperature, wherein the specific steps are as follows: taking the steam generator temperature value with the number of the corresponding DTW paths being larger than a preset path threshold value as a retention temperature; the other temperature values in the steam generator temperature value sequence than the retention temperature are taken as non-retention temperatures. In the embodiment of the present invention, the preset path threshold value is 1, and in other embodiments, the value may be adjusted by an implementer according to the actual situation. The DTW path corresponding to the temperature pair is a line segment obtained by connecting two temperature values matched in two sequences in the DTW algorithm, and may be referred to as a shortest path corresponding to the DTW distance.
It should be noted that if a certain frequency at the first temperature sensor 49 is slightly affected by the condensation of the water vapor, the number of slope lines of each retention point in the DTW distance of the matching curve in the two one-to-one relationship is similar to that of the frequency curve corresponding to the frequency at the second temperature sensor 52.
Step S200, determining the fluctuation of each temperature component pair according to the fluctuation degree of the path slope corresponding to all the reserved temperatures in each temperature component pair; determining the consistency of each temperature component pair according to the distribution condition of the path slopes corresponding to all the unreserved temperatures in each temperature component pair; the weights of the temperature components are determined based on the volatility and consistency of each temperature component pair.
Firstly, determining the fluctuation degree of the path slope corresponding to all the reserved temperatures in each temperature component pair.
For each one-to-one DTW matching, each reserved point corresponds to a plurality of DTW paths, the number of the DTW paths corresponding to each reserved point can be obtained and is marked as a, a sequence is formed by the DTW paths of all reserved points in the matching, and the variance of the sequence is used as the fluctuation of the temperature component pair. Wherein the number of DTW paths corresponding to each reservation point, i.e., the number of path slopes corresponding to each reservation point. Therefore, for each temperature component pair, the number of the path slopes corresponding to each reserved temperature is obtained and is recorded as the reserved path number, and the variance of the reserved path number of all reserved temperatures is used as the volatility of the temperature component pair.
If the one-to-one relationship in the DTW matching in the one-to-one matching relationship, that is, the greater the path slope direction consistency of the non-preserved points, it means that the more likely the frequency curve at the second temperature sensor 52 is due to the frequency curve at the first temperature sensor 49 being formed due to the loss in the transfer process, the greater the probability belongs to the curve after the frequency curve at the first temperature sensor 49 is smoothly changed.
Taking DTW matching of each one-to-one relation as an example, constructing a corresponding slope histogram according to the occurrence frequency of the path slope of each non-reserved temperature in the temperature component pair; the slope histogram is partitioned to divide the path slope into a plurality of slope classes. In the embodiment of the invention, slope values are divided into different slope categories through otsu multi-threshold segmentation on the slope histogram, a plurality of slope values are arranged in each category, the slope values in the same slope category are similar, and the slope values in different categories have larger difference. It should be noted that, path slopes within the same slope class are distributed in time in each region, and if the distribution concentration is large, the more likely the explanation is due to noise influence.
And for the path slope in each slope class, marking the average value of the non-retention temperature and the adjacent non-retention temperature corresponding to each path slope as the path temperature average value, and constructing a first class by the path temperature average value corresponding to each slope class. That is, for the path slope in each slope class, the position of the DTW path corresponding to each path slope can be obtained, and the abscissa mean value of the non-reserved temperatures corresponding to all adjacent DTW paths is used as the path temperature mean value. In the embodiment of the present invention, the adjacent unreserved temperature corresponding to the unreserved temperature a1 is defined as the latter unreserved temperature adjacent to the unreserved temperature a 1.
The variance of all non-retained temperatures in each slope class is taken as the first variance for that slope class.
Taking the variance of the path temperature mean value in the first category as a second variance; and calculating the inter-class variance of the temperature component pair according to the first variances of the temperature component pair and the second variances of all the corresponding first classes. Specifically, the squares of the differences between the second variance and the first variance of each first category are calculated, and the squares of all the differences are summed to obtain the inter-category variance.
The smaller the inter-class variance, the more concentrated the first class distribution corresponding to the different slope classes, rather than being dispersed. And taking the difference value between the preset regulating value and the inter-class variance as the consistency of the temperature component pair. In the embodiment of the present invention, the preset adjustment value is 1, and in other embodiments, the value is adjusted by the practitioner according to the actual situation.
Further, according to the fluctuation and consistency of each temperature component pair, the weight of the temperature component is determined, and the specific steps are as follows: the product of the fluctuation and consistency of each temperature component pair is taken as the weight of the temperature component. I.e. as a weight for each temperature component pair in each one-to-one relationship.
Step S300, reconstructing a temperature sequence through the temperature component based on the weight of the temperature component to obtain an adjusted temperature value sequence; and obtaining a temperature adjustment value according to the temperature adjustment value sequence.
And then reconstructing the temperature value sequence by combining the weight of each temperature component to obtain an adjusted temperature value sequence. In the embodiment of the invention, the steam generator temperature value sequence is only required to be reconstructed, and the reconstructed steam generator temperature value sequence is used as the adjustment temperature value sequence.
After the sequence of adjusted temperature values is obtained, the weight of the activated carbon is obtained by monitoring a weight monitor in the regulation module, wherein the weight monitor is connected with the removal gas analysis controller.
And obtaining the weight difference between adjacent weights in the weight sequence of the activated carbon.
And (3) recording the time point corresponding to the previous weight in the two weights corresponding to the maximum weight difference value of the weight sequence of the activated carbon as the optimal time, and taking the temperature of the steam generator at the optimal time as the optimal temperature value. In other embodiments the practitioner may also preset the optimal temperature value directly based on experience or big data statistics.
And taking the difference value of the real-time temperature data in the optimal temperature value and the temperature value sequence as a temperature adjustment value. Wherein the real-time temperature data is the temperature data obtained by the latest acquisition and analysis.
It should be noted that the temperature adjustment value may be positive or negative, or may be zero; when the temperature adjustment value is positive, outputting a control instruction to the temperature control mechanism according to the temperature adjustment value, and lifting the temperature of the steam generator, wherein the temperature difference during lifting is the temperature adjustment value; when the temperature adjustment value is positive, outputting a control instruction to the temperature control mechanism according to the temperature adjustment value, reducing the temperature of the steam generator, wherein the temperature difference during the reduction is the absolute value of the temperature adjustment value; when the temperature adjustment value is zero, the temperature control mechanism does not adjust the temperature of the steam generator.
In the embodiment of the invention, the temperature control mechanism realizes the purpose of regulating and controlling the temperature of the steam generator by controlling the fuel supply. In other embodiments, the heating device can also be used as a temperature control mechanism to realize the temperature regulation and control of the steam generator.
The temperature control mechanism regulates and controls the temperature of the steam sensor, so that the temperature value of the organic waste gas simulated adsorption device 42 is close to the optimal temperature of activated carbon adsorption, and the activated carbon adsorption effect is improved.
In summary, the present invention relates to the technical field of harmful gas removal. The embodiment of the invention provides a device for removing indoor formaldehyde and TVOC, which comprises a device body for removing indoor formaldehyde and TVOC and a monitoring regulation module. The monitoring and regulating module comprises: a temperature sensor module, a removed gas analysis controller and a temperature control mechanism. The gas removal analysis controller adjusts the temperature value by matching the temperature values at different positions, eliminates errors caused by external factors when acquiring the temperature, and obtains a temperature adjustment value according to the adjusted temperature value; and outputting a control instruction to the temperature control mechanism according to the temperature adjustment value so as to adjust the temperature of the steam generator. The temperature control mechanism regulates and controls the temperature of the steam sensor, so that the temperature value of the organic waste gas simulated adsorption device 42 is close to the optimal temperature of activated carbon adsorption, and the activated carbon adsorption effect is improved.
It should be noted that: the sequence of the embodiments of the present invention is only for description, and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
Claims (10)
1. Get rid of device of indoor formaldehyde, TVOC, including getting rid of indoor formaldehyde, TVOC device body, get rid of indoor formaldehyde, TVOC device body in including organic waste gas simulation adsorption equipment (42) and steam generator (43), and organic waste gas simulation adsorption equipment (42) are connected with steam generator (43), its characterized in that, get rid of indoor formaldehyde, TVOC device body still includes monitoring regulation and control module, monitoring regulation and control module includes: a temperature sensor module, a removed gas analysis controller and a temperature control mechanism;
the signal output end of the temperature sensor module is connected with the signal input end of the gas removal analysis controller, the signal output end of the gas removal analysis controller is connected with the signal input end of a temperature control mechanism, and the temperature control mechanism is used for adjusting the temperature of a steam generator (43) in the device for removing indoor formaldehyde and TVOC;
the temperature sensor module is used for respectively acquiring temperature values of the steam generators (43) at different positions and outputting the temperature values to the removed gas analysis controller;
the gas removal analysis controller respectively decomposes each temperature value sequence to obtain a temperature component; matching temperature components corresponding to the temperature value sequences at different positions to obtain a temperature component pair, and matching temperature values in the temperature component pair to obtain a temperature pair; acquiring the slope of the DTW path corresponding to the temperature in each temperature component pair, marking the slope as the path slope, and determining the reserved temperature and the unreserved temperature; determining the fluctuation of each temperature component pair according to the fluctuation degree of the path slope corresponding to all the reserved temperatures in each temperature component pair; determining the consistency of each temperature component pair according to the distribution condition of the path slopes corresponding to all the unreserved temperatures in each temperature component pair; determining the weight of each temperature component according to the fluctuation and consistency of each temperature component pair; reconstructing a temperature sequence through the temperature component based on the weight of the temperature component to obtain an adjusted temperature value sequence; obtaining a temperature adjustment value according to the temperature adjustment value sequence; outputting a control command to the temperature control mechanism according to the temperature adjustment value to adjust the temperature of the steam generator (43);
and taking the difference value of the real-time temperature data in the optimal temperature value and the temperature value sequence of the activated carbon adsorption as a temperature adjustment value.
2. The device for removing formaldehyde and TVOC from a room of claim 1, wherein the monitoring and control module further comprises a weight detector for acquiring the weight of the activated carbon.
3. The apparatus for removing formaldehyde and TVOC from a room according to claim 2, wherein said obtaining a temperature adjustment value according to a temperature adjustment value sequence comprises:
acquiring a weight difference value of adjacent weights in the weight sequence of the activated carbon;
recording a time point corresponding to the previous weight corresponding to the maximum weight difference value of the weight sequence of the activated carbon as the optimal time; taking the temperature of the steam generator at the optimal time as an optimal temperature value;
and taking the difference value of the real-time temperature data in the optimal temperature value and the temperature value sequence as a temperature adjustment value.
4. The apparatus for removing formaldehyde and TVOC from a room according to claim 1, wherein said determining the volatility of each temperature component pair based on the degree of fluctuation of the path slope corresponding to all the remaining temperatures in each temperature component pair comprises:
for each temperature component pair, the number of path slopes corresponding to each reserved temperature is obtained and is recorded as reserved path number, and the variance of the reserved path number of all reserved temperatures is used as the volatility of the temperature component pair.
5. The apparatus for removing formaldehyde and TVOC from a room according to claim 1, wherein said determining the consistency of each pair of temperature components based on the distribution of the path slopes corresponding to all non-reserved temperatures in each pair of temperature components comprises:
constructing a corresponding slope histogram according to the occurrence frequency of the path slope of each non-reserved temperature in the temperature component pair; dividing the slope histogram, and dividing the path slope into a plurality of slope classes;
for the path slope in each slope class, marking the average value of the non-retention temperature and the adjacent non-retention temperature corresponding to each path slope as the path temperature average value, and constructing a first class by the path temperature average value corresponding to each slope class;
taking the variance of all unreserved temperatures in the temperature component pair as the first variance of the temperature component pair;
taking the variance of the path temperature mean value in the first category as a second variance; calculating the inter-class variance of the temperature component pair according to the first variances of the temperature component pair and the second variances of all the corresponding first classes;
and taking the difference value between the preset regulating value and the inter-class variance as the consistency of the temperature component pair.
6. The apparatus for removing formaldehyde and TVOC from a room according to claim 1, wherein said determining the weight of the temperature component according to the fluctuation and uniformity of each temperature component pair comprises:
the product of the fluctuation and consistency of each temperature component pair is taken as the weight of the temperature component.
7. The device for removing formaldehyde and TVOC in room according to claim 1, wherein the matching of temperature components corresponding to the temperature value sequences at different positions to obtain a temperature component pair comprises:
the temperature value sequence comprises a steam generator temperature value sequence and a pipeline temperature value sequence;
and using a KM matching algorithm, taking a temperature component corresponding to the steam generator temperature value sequence as a left node, taking a temperature component corresponding to the pipeline temperature value sequence as a right node, taking the similarity of the two temperature components as an edge weight value between the two corresponding nodes, and matching the temperature components corresponding to the steam generator temperature value sequence and the pipeline temperature value sequence to obtain a temperature component pair.
8. The apparatus for removing formaldehyde and TVOC from a room according to claim 7, wherein said method for determining a retention temperature and a non-retention temperature comprises:
taking the steam generator temperature value with the number of the corresponding DTW paths being larger than a preset path threshold value as a retention temperature; the other temperature values in the steam generator temperature value sequence than the retention temperature are taken as non-retention temperatures.
9. The apparatus for removing formaldehyde and TVOC from a room according to claim 1, wherein said matching the temperature values in the temperature component pair to obtain a temperature pair comprises:
and matching the temperature values in the two temperature components in the temperature component pair by using a DTW algorithm to obtain a temperature pair corresponding to the two temperature components in the temperature component pair.
10. The method for removing the indoor formaldehyde and the TVOC comprises the steps of removing the indoor formaldehyde and the TVOC, wherein an organic waste gas simulation adsorption device (42) and a steam generator (43) in a TVOC device body are connected, and the organic waste gas simulation adsorption device (42) is connected with the steam generator (43), and is characterized in that the indoor formaldehyde and the TVOC device body also comprise a temperature sensor module and a gas removal analysis controller, the temperature sensor module is used for acquiring the temperature values of the steam generator at different positions, and the gas removal analysis controller is used for carrying out the following steps:
decomposing each temperature value sequence to obtain a temperature component; matching temperature components corresponding to temperature value sequences of the steam generators (43) at different positions to obtain temperature component pairs, and matching temperature values in the temperature component pairs to obtain temperature pairs; acquiring the slope of the DTW path corresponding to the temperature in each temperature component pair, marking the slope as the path slope, and determining the reserved temperature and the unreserved temperature; determining the fluctuation of each temperature component pair according to the fluctuation degree of the path slope corresponding to all the reserved temperatures in each temperature component pair; determining the consistency of each temperature component pair according to the distribution condition of the path slopes corresponding to all the unreserved temperatures in each temperature component pair; determining the weight of each temperature component according to the fluctuation and consistency of each temperature component pair; reconstructing a temperature sequence through the temperature component based on the weight of the temperature component to obtain an adjusted temperature value sequence; obtaining a temperature adjustment value according to the temperature adjustment value sequence; outputting a control command to a temperature control mechanism according to the temperature adjustment value so as to adjust the temperature of the steam generator (43);
and taking the difference value of the real-time temperature data in the optimal temperature value and the temperature value sequence of the activated carbon adsorption as a temperature adjustment value.
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| JP2000141319A (en) * | 1998-11-06 | 2000-05-23 | Nippon Paper Industries Co Ltd | Device for removing formaldehyde |
| CN210645886U (en) * | 2019-08-30 | 2020-06-02 | 王占修 | Mobile room-temperature formaldehyde removing robot |
| CN116108355A (en) * | 2023-04-12 | 2023-05-12 | 广东顺德禾庄能源科技有限公司 | Management method for cloud hot water monitoring platform data |
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