CN113087558A - Compost ventilation control method capable of intelligently and quickly fitting air volume - Google Patents
Compost ventilation control method capable of intelligently and quickly fitting air volume Download PDFInfo
- Publication number
- CN113087558A CN113087558A CN202110410843.9A CN202110410843A CN113087558A CN 113087558 A CN113087558 A CN 113087558A CN 202110410843 A CN202110410843 A CN 202110410843A CN 113087558 A CN113087558 A CN 113087558A
- Authority
- CN
- China
- Prior art keywords
- frequency
- air volume
- difference
- value
- preset
- 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.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
- C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
- C05F17/979—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being gaseous
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/70—Controlling the treatment in response to process parameters
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention relates to a compost ventilation control method for intelligently and quickly fitting air volume, which comprises the following steps: obtaining a reference frequency-air volume performance curve of the fan; according to the set target air quantity QaimCalculating the reference frequency F according to the reference frequency-air volume performance curvere(ii) a Determination of fan at reference frequency FreActual air quantity Qac(ii) a Target air quantity QaimThe frequency corresponding to the actual frequency-air volume performance curve of the fan is the target frequency FaimCalculating to obtain the target frequency FaimAnd controls the fan at that frequency. The compost ventilation control method can intelligently and quickly fit the air volume, realizes accurate output of the air volume in the aerobic composting process, is beneficial to quickly controlling relevant indexes in a closed loop manner, and has low energy consumption. In addition, the compost aeration control of the inventionThe method can also be applied to other industrial and agricultural scenes related to controlling ventilation.
Description
Technical Field
The invention relates to a compost ventilation control method capable of intelligently and quickly fitting air volume, and belongs to the technical field of fertilizer manufacturing.
Background
Aerobic composting is the process of oxidizing, decomposing, absorbing and converting organic waste by aerobic microorganisms under aerobic conditions. Aeration is a necessary condition for aerobic composting. During composting, ventilation has 3 effects: oxygen supply, heat dissipation and moisture removal. Different ventilation volumes have different influences on the composting process, the ventilation volumes are insufficient and cannot meet the requirement of aerobic, anaerobic fermentation occurs locally to inhibit the reaction process, and the ventilation volumes are too large, so that the heat generated by the pile body is dissipated too fast, and the temperature rise of the pile body is influenced. Too much or too little ventilation affects the temperature of the compost and thus the quality of the compost product. Among various ventilation methods, the forced ventilation method is a method of conveying air to a pile body through a ventilation duct by using a blower, and is widely used in aerobic composting engineering.
The oxygen consumption rate refers to the rate of utilizing oxygen by microorganisms in the composting process and is a mark of the rate of decomposing and converting organic matters by aerobic microorganisms, so that the aerobic composting carries out tracking test on the oxygen consumption rate, the ventilation quantity is adjusted in time, the microorganisms in the compost have the optimal activity when the aerobic composting is at the maximum aerobic rate, and the ventilation quantity at the moment is the optimal ventilation quantity. The optimum ventilation varies continuously with the progress of composting. In order to realize the optimal ventilation quantity and the optimal ventilation effect, a plurality of ventilation control modes are adopted to realize the reasonable control of the composting process, such as a timing on-off cycle control mode, an oxygen content feedback control mode, a temperature-oxygen content feedback control mode and the like, and the forced ventilation control mode can be developed and upgraded continuously along with the improvement of the monitoring technology and the informatization level. All aerobic composting ventilation control modes need to convey air into a compost body in real time, properly and uniformly according to the change of operation parameters in the composting process. Therefore, a ventilation control system capable of performing feedback control in time according to changes in the operating parameters of the compost is particularly important in the composting process.
The ventilation control of the aerobic compost mainly controls ventilation quantity, ventilation time and ventilation interval reasonably according to the change of operation parameters. The existing ventilation control mode is a ventilation mode with preset various different ventilation amounts, ventilation time and ventilation intervals, and then the corresponding ventilation mode is selected according to the change of stack operation control indexes such as temperature, oxygen content and the like, and is a passive feedback control mode, namely, when the monitoring data triggers a set threshold value, the corresponding ventilation mode is started, and the ventilation mode does not change as long as the ventilation mode is within the range allowed by the operation control indexes; for the regulation and control of ventilation volume, two methods exist: one is to adopt the pipeline to regulate the air quantity, keep the output air quantity of the blower unchanged, the central controller controls the opening and closing degree of the regulating valve according to the operational control index feedback, in order to control the magnitude of the output air quantity, but there are problems such as the pipeline windage is great, the energy consumption is high, the accuracy of the output air quantity is insufficient, the output wind pressure is difficult to control in use; the other method is that the output air volume of the fan is kept unchanged, the central controller feeds back according to the operation control index, and the output air volume is controlled by changing the ventilation time, so that the accuracy of the output air volume is high, the output air pressure cannot be adjusted, and the feedback regulation and control time of the output air volume is slow.
In addition, aerobic composting all adopts one end air inlet at present, for the homogeneity that improves the air inlet, mainly adopts two kinds of modes: one is to increase the ventilation pipeline and arrange the ventilation holes reasonably, so that the air output of each hole is kept uniform; the other is that a cushion layer is additionally arranged under the stack body and is used as an air inlet buffer cavity, so that air uniformly enters the stack body from the bottom. This kind of one end air inlet form, even guarantee the homogeneity of air output through the aperture of adjustment exhaust vent, because air inlet channel windage and along the way wind pressure loss lead to big at air inlet end wind pressure, the other end wind pressure of keeping away from the air intake is little, hardly accomplishes the homogeneity of cloth wind in fact.
Because the microbial fermentation is continuously carried out and continuously changed, the existing ventilation control technology is difficult to stably control the optimal ventilation quantity in the whole composting process, so that the aerobic rate is in a fluctuating state in the actual composting process, the composting time is prolonged, and the quality of composting products is influenced.
The invention patent application with application number CN201810459237.4 and application publication number CN108383573A discloses a composting system and an air supply method and a composting method thereof, wherein the core of the composting system is that an air supply device supplies air intermittently to compost, the intermittent air supply comprises four continuous stages, each stage is provided with fixed air supply time and air stop time, the air supply mode is air supply from one end of a vent pipe, and vent holes are distributed on the vent pipe; simultaneously, the size of amount of wind during the air supply is adjusted through the operation of control air supply arrangement, specifically is, monitors windrow temperature T to preset reference temperature T1 and T2, T1 > T2, at the in-process of intermittent type nature air supply, according to the real-time feedback control air supply arrangement's of temperature T start-stop and operation, wherein: when T is more than T1, the air supply device runs at high speed and outputs large air volume; when T1 is more than T and more than T2, the air supply device runs at low speed and outputs small air volume; when T is less than T2, the air supply device is closed, and air supply is stopped; the feedback control unit of the control system controls the opening or closing of the air supply device according to the temperature data detected by the temperature sensor and the gas concentration data detected by the gas sensor, and the output air volume is realized by controlling the blower by the control system through the frequency converter. However, according to the ventilation method stated in the technical scheme, the output air volume cannot be controlled digitally and accurately, and the ventilation time cannot be adjusted, so that the ventilation volume required by the stack body is difficult to be controlled automatically through the feedback control unit, and in addition, due to the pressure loss of the ventilation pipe, the ventilation volume in the longitudinal length range of the stack body is difficult to ensure the uniformity of the ventilation volume in the longitudinal length range of the stack body by adopting an one-end air supply mode.
The core of the invention patent application with the application number of CN200910058237.4 and the application publication number of CN101475413A is that a central control unit sets the ventilation sequence of a material pile and compiles a corresponding opening queue of electric air valves of the material pile by using external data information received by a signal input unit, and then controls the opening and closing of each electric air valve and a fan in the opening queue through a signal output unit. The invention patent application with application number CN201810040701.6 and application publication number CN108117421A discloses a compost ventilation aeration system, which comprises one or more aeration units, wherein each aeration unit comprises an aeration fan and one or more aeration pipe groups, a plurality of air distribution pipes are connected with the aeration fan through the aeration pipes and are uniformly distributed in a compost tank, an electric valve arranged at the air inlet end of each air distribution pipe controls the aeration time and area of an aerobic compost pile body, and a control device can respectively control the start and stop of the aeration fan and the electric valve to aerate a designated area according to the set time, so that the control of section interval and section is realized. The essence of the two schemes is that under the condition that the ventilation volume of the aeration (air blower) is kept unchanged, the pressure loss of the ventilation pipe is counteracted by transversely and sectionally supplying air, so that the air distribution uniformity of the stack body is ensured, then the aeration air volume required by the stack body is realized by setting fixed ventilation time and ventilation interval through the control device, and because automatic feedback control is not carried out according to the operation parameters of the stack body, the change of the operation parameters of the stack body can only be artificially judged and adjusted, but the aeration air volume can not be controlled in real time.
Therefore, it is urgently needed to develop an intelligent ventilation control method, which can automatically and quickly perform feedback control according to the change of the stack operation control index, realize accurate output of ventilation quantity, and convey air into the stack in real time, in a proper amount and uniformly.
Disclosure of Invention
The main purposes of the invention are: the method is particularly suitable for closed-loop control according to the change of operation control indexes in the aerobic composting process.
The technical scheme for solving the technical problems of the invention is as follows:
a compost ventilation control method capable of intelligently and quickly fitting air volume is characterized by comprising the following steps:
firstly, assuming that a reference frequency-air volume performance curve of a fan is a straight line; determining the maximum frequency of use F of the fanmaxThe lower air volume is taken as the maximum air volume QmaxIn a frequency-air volume two-dimensional coordinate system, an origin point and a point (F)max，Qmax) Connecting to obtain a reference frequency-air volume performance curve of the fan;
secondly, according to the set target air quantity QaimCalculating the reference frequency F according to the reference frequency-air volume performance curvere(ii) a Determination of fan at reference frequency FreActual air quantity Qac；
Thirdly, assuming that the actual frequency-air volume performance curve of the fan is a smooth curve and the target air volume QaimThe frequency corresponding to the curve is the target frequency Faim(ii) a Calculating to obtain the target frequency FaimIs prepared by：
S1, calculating actual air quantity QacMinus target air quantity QaimObtaining a difference D, and adjusting the reference frequency F according to the difference Dre: if the difference D is a positive value, reducing the frequency, and if the difference D is a negative value, increasing the frequency; the frequency obtained by adjustment is the adjustment frequency;
s2, measuring the adjusted air volume of the fan corresponding to the actual frequency-air volume performance curve under the adjusted frequency; judging and adjusting air quantity and target air quantity QaimWhether the absolute value of the difference value of (A) is less than or equal to a preset target air volume allowable error EpIf not, the adjusted air volume is taken as the actual air volume QacAnd using the adjusted frequency as a reference frequency FreGo to S1 to continue execution; if yes, the adjusting frequency is the target frequency F obtained by air quantity feedback calculationaimAnd controlling the fan to be at the frequency;
and S3, judging whether to finish the control, if so, finishing the control method.
The method can intelligently and quickly fit the air volume, realizes the accurate output of the air volume, is favorable for quickly controlling relevant indexes in the aerobic composting process, and has low energy consumption.
Preferably, the specific process of S1 includes:
t0 actual air quantity QacMinus target air quantity QaimObtaining a difference D;
t1, setting a difference limit L; judging whether the calculated difference D is calculated for the first time, if so, turning to T2, otherwise, turning to T4;
t2, judging the relation between the absolute value of the difference D and the difference limit L, if the absolute value of the difference D is larger than or equal to the difference limit L, turning to T3, and if the absolute value of the difference D is smaller than the difference limit L, turning to T4;
t3, adopting a large-equal adjustment mode:
calculating a small value of the difference between the two
Wherein D is a difference D, and L is a difference limit L [, [ 2 ]]Represents an integer part;
calculating difference-adjusted air quantity Q ═ Qaim+ S, wherein QaimIs a target air quantity Qaim；
Taking a reference frequency-air volume performance curve as f (x) ═ ax, and an auxiliary curve as f '(x) ═ ax + D, wherein a is a coefficient, x is frequency, D is a difference value D, and f (x) and f' (x) are air volumes respectively;
substituting Q into the auxiliary curve to obtain an adjustment frequency, and turning to S2;
t4, adopting an equal adjustment mode:
according to a preset equivalent frequency to a reference frequency FrePerforming a decrease or increase: if the difference D is positive value, the reference frequency F is setreSubtracting the preset equivalent frequency to obtain the adjustment frequency, and if the difference D is negative, referring to the frequency FreAdding a preset equal frequency to obtain an adjusting frequency; transitioning to S2; wherein the content of the first and second substances,
the preset equal frequency is a fixed frequency value or is multiplied by a reference frequency F according to a preset percentagereThe calculated value of (a); when the difference value D calculated this time is changed in sign compared with the difference value D calculated last time, the preset equivalent frequency is calculated by multiplying the preset equivalent frequency adopted last time by the preset proportion.
More preferably, in T1, the difference limit L is a fixed value or is a preset ratio multiplied by the target air quantity QaimThe calculated value of (a); in S2, the target air volume allowable error EpIs multiplied by the target air quantity Q according to a preset error proportionaimThe calculated value of (1).
More preferably, in T1, the preset ratio is 10 ± 5%; in T4, the fixed frequency value is 1 +/-1 Hz, the preset percentage is 2 +/-1%, and the preset proportion is 50 +/-20%; in S2, the preset error proportion is 0.5-2%.
By adopting the preferred scheme, the fitting calculation process can be further optimized; the difference limit is a numerical limit for distinguishing the size of the difference, and a large-equal adjustment mode is adopted after judgment on the basis, so that the air volume fitting speed can be increased when the difference between the actual air volume and the target air volume is large.
Preferably, in S3 of the third step, when determining whether to end the control, if the determination result is negative and there is a newly determined current target air volume, the process goes to W1;
w1, taking the current air volume as the initial air volume and the current frequency as the initial frequency; assuming that the frequency of the current target air volume on the actual frequency-air volume performance curve of the fan is the current target frequency;
w2, subtracting the initial air volume from the current target air volume to obtain a difference value D ', and adjusting the initial frequency according to the difference value D': if the difference D 'is a positive value, increasing the frequency, and if the difference D' is a negative value, decreasing the frequency; the frequency obtained by adjustment is the adjustment frequency;
w3, measuring the adjusted air volume of the fan corresponding to the actual frequency-air volume performance curve under the adjusted frequency; judging whether the absolute value of the difference value between the adjusted air volume and the current target air volume is less than or equal to a preset target air volume allowable error E'pIf not, taking the adjusted air volume as the current air volume and taking the adjusted frequency as the current frequency, and turning to W1 to continue execution; if so, the adjusting frequency is the current target frequency obtained through air volume feedback calculation, and the fan is controlled to be at the frequency;
w4, go to S3.
More preferably, the specific process of W2 includes:
v0, subtracting the initial air volume from the current target air volume to obtain a difference value D';
v1, setting a difference limit L'; judging whether the calculated difference D' is calculated for the first time, if so, turning to V2, and if not, turning to V4;
v2, judging the relation between the absolute value of the difference D 'and the difference limit L', if the absolute value of the difference D 'is larger than or equal to the difference limit L', turning to V3, and if the absolute value of the difference D 'is smaller than the difference limit L', turning to V4;
v3, adopting a large-equal adjustment mode:
calculating a small value of the difference between the two
Wherein D 'is a difference D', and L 'is a difference limit L', []Represents an integer part;
calculating difference-adjusted air quantity Q' ═ current target air quantity-S;
taking a reference frequency-air volume performance curve as f (x) ax, and an auxiliary curve as f ' (x) ax-D ', wherein a is a coefficient, x is frequency, D ' is a difference value D ', f (x), and f ' (x) are air volumes respectively;
substituting Q' into the auxiliary curve to obtain an adjustment frequency, and turning to W3;
v4, adopting an equal adjustment mode:
and reducing or increasing the initial frequency according to a preset equivalent frequency: if the difference D 'is a positive value, the initial frequency is added with the preset equivalent frequency to obtain an adjusting frequency, and if the difference D' is a negative value, the initial frequency is subtracted with the preset equivalent frequency to obtain the adjusting frequency; turning to W3; wherein the content of the first and second substances,
the preset equal frequency is a fixed frequency value or a value obtained by multiplying a preset percentage by an initial frequency; when the difference value D 'calculated this time is changed in sign compared with the difference value D' calculated last time, the preset equivalent frequency is calculated by multiplying the preset equivalent frequency adopted last time by the preset proportion.
More preferably, in V1, the difference limit L' is a fixed value or a value obtained by multiplying the current target air volume by a preset ratio; in W3, the target air volume allowable error E'pIs a value obtained by multiplying a preset error proportion by the current target air volume, or the target air volume allowable error E'pAnd the target air volume allowable error E in S2pAre equal.
More preferably, in V1, the preset ratio is 10 ± 5%; in V4, the fixed frequency value is 1 ± 1Hz, the preset percentage is 2 ± 1%, and the preset proportion is 50 ± 20%; in W3, the preset error proportion is 0.5-2%.
By adopting the preferable scheme, the scene which is fitted according to the newly determined current target air volume can be further optimized on the basis of the target air volume before fitting.
Preferably, when the target air quantity QaimOr the current target air volume is not clear, and the target air volume is fitted step by step to test operation when the current target air volume needs to be controlled according to a target index related to the ventilation volume, and when the target air volume is matched with the ventilation volumeAnd when the feedback of the target index is met, the corresponding air volume is the target air volume.
By adopting the preferable scheme, the application range can be further expanded to the control of the related indexes of the ventilation quantity.
The present invention also provides:
a river aeration control method capable of intelligently and quickly fitting air volume is characterized in that the air volume of an aerator is controlled by the intelligent and quickly fitting air volume compost aeration control method.
The core of the method is the compost ventilation control method. In addition, the compost ventilation control method can also be applied to other industrial and agricultural scenes related to ventilation control.
Compared with the prior art, the compost ventilation control method can intelligently and quickly fit the air volume, realizes accurate output of the ventilation volume in the aerobic composting process, is beneficial to quickly controlling relevant indexes in a closed loop manner, and has low energy consumption. In addition, the compost ventilation control method can also be applied to other industrial and agricultural scenes related to ventilation control.
Drawings
Fig. 1 is a graph relating to a basic solution when the present invention is embodied.
Figure 2 is a graph relating to a further preferred embodiment of the invention when embodied.
Fig. 3 is a schematic view of embodiment 1 of the present invention.
Fig. 4 is a schematic view of embodiment 2 of the present invention.
Detailed Description
The composting ventilation control method for intelligently and quickly fitting the air volume comprises the following steps:
firstly, assuming that a reference frequency-air volume performance curve of a fan is a straight line; determining the maximum frequency of use F of the fanmaxThe lower air volume is taken as the maximum air volume QmaxIn a frequency-air volume two-dimensional coordinate system, an origin point and a point (F)max，Qmax) Connecting to obtain a reference frequency-air volume performance curve of the fan;
a second step according toSet target air quantity QaimCalculating the reference frequency F according to the reference frequency-air volume performance curvere(ii) a Determination of fan at reference frequency FreActual air quantity Qac；
Thirdly, assuming that the actual frequency-air volume performance curve of the fan is a smooth curve and the target air volume QaimThe frequency corresponding to the curve is the target frequency Faim(ii) a Calculating to obtain the target frequency FaimThe process comprises the following steps:
s1, calculating actual air quantity QacMinus target air quantity QaimObtaining a difference D, and adjusting the reference frequency F according to the difference Dre: if the difference D is a positive value, reducing the frequency, and if the difference D is a negative value, increasing the frequency; the frequency obtained by adjustment is the adjustment frequency;
s2, measuring the adjusted air volume of the fan corresponding to the actual frequency-air volume performance curve under the adjusted frequency; judging and adjusting air quantity and target air quantity QaimWhether the absolute value of the difference value of (A) is less than or equal to a preset target air volume allowable error EpIf not, the adjusted air volume is taken as the actual air volume QacAnd using the adjusted frequency as a reference frequency FreGo to S1 to continue execution; if yes, the adjusting frequency is the target frequency F obtained by air quantity feedback calculationaimAnd controlling the fan to be at the frequency;
and S3, judging whether to finish the control, if so, finishing the control method.
Wherein, the specific process of S1 includes:
t0 actual air quantity QacMinus target air quantity QaimObtaining a difference D;
t1, setting a difference limit L; judging whether the calculated difference D is calculated for the first time, if so, turning to T2, otherwise, turning to T4;
t2, judging the relation between the absolute value of the difference D and the difference limit L, if the absolute value of the difference D is larger than or equal to the difference limit L, turning to T3, and if the absolute value of the difference D is smaller than the difference limit L, turning to T4;
t3, adopting a large-equal adjustment mode:
calculating a small value of the difference between the two
Wherein D is a difference D, and L is a difference limit L [, [ 2 ]]Represents an integer part;
calculating difference-adjusted air quantity Q ═ Qaim+ S, wherein QaimIs a target air quantity Qaim；
Taking a reference frequency-air volume performance curve as f (x) ═ ax, and an auxiliary curve as f '(x) ═ ax + D, wherein a is a coefficient, x is frequency, D is a difference value D, and f (x) and f' (x) are air volumes respectively;
substituting Q into the auxiliary curve to obtain an adjustment frequency, and turning to S2;
t4, adopting an equal adjustment mode:
according to a preset equivalent frequency to a reference frequency FrePerforming a decrease or increase: if the difference D is positive value, the reference frequency F is setreSubtracting the preset equivalent frequency to obtain the adjustment frequency, and if the difference D is negative, referring to the frequency FreAdding a preset equal frequency to obtain an adjusting frequency; transitioning to S2; wherein the preset equivalent frequency is a fixed frequency value or is multiplied by a reference frequency F according to a preset percentagereThe calculated value of (a); when the difference value D calculated this time is changed in sign compared with the difference value D calculated last time, the preset equivalent frequency is calculated by multiplying the preset equivalent frequency adopted last time by the preset proportion.
Specifically, in T1, difference limit L is a fixed value or a preset ratio multiplied by target air volume QaimThe calculated value of (a); in S2, target air volume allowable error EpIs multiplied by the target air quantity Q according to a preset error proportionaimThe calculated value of (1). More specifically, in T1, the preset ratio is 10 ± 5%; in T4, the fixed frequency value is 1 +/-1 Hz, the preset percentage is 2 +/-1%, and the preset proportion is 50 +/-20%; in S2, the preset error ratio is 0.5-2%.
The graph relating to the above basic solution is shown in fig. 1. Preset highest frequency of use F in the figuremaxIs 50 Hz.
As a further preferable scheme, in S3 of the third step, when it is determined whether to end the control, if the determination result is no and there is a newly determined current target air volume, the process goes to W1;
w1, taking the current air volume as the initial air volume and the current frequency as the initial frequency; assuming that the frequency of the current target air volume on the actual frequency-air volume performance curve of the fan is the current target frequency;
w2, subtracting the initial air volume from the current target air volume to obtain a difference value D ', and adjusting the initial frequency according to the difference value D': if the difference D 'is a positive value, increasing the frequency, and if the difference D' is a negative value, decreasing the frequency; the frequency obtained by adjustment is the adjustment frequency;
w3, measuring the adjusted air volume of the fan corresponding to the actual frequency-air volume performance curve under the adjusted frequency; judging whether the absolute value of the difference value between the adjusted air volume and the current target air volume is less than or equal to a preset target air volume allowable error E'pIf not, taking the adjusted air volume as the current air volume and taking the adjusted frequency as the current frequency, and turning to W1 to continue execution; if so, the adjusting frequency is the current target frequency obtained through air volume feedback calculation, and the fan is controlled to be at the frequency;
w4, go to S3.
The specific process of W2 includes:
v0, subtracting the initial air volume from the current target air volume to obtain a difference value D';
v1, setting a difference limit L'; judging whether the calculated difference D' is calculated for the first time, if so, turning to V2, and if not, turning to V4;
v2, judging the relation between the absolute value of the difference D 'and the difference limit L', if the absolute value of the difference D 'is larger than or equal to the difference limit L', turning to V3, and if the absolute value of the difference D 'is smaller than the difference limit L', turning to V4;
v3, adopting a large-equal adjustment mode:
calculating a small value of the difference between the two
Wherein D 'is a difference D', and L 'is a difference limit L', []Represents an integer part;
calculating difference-adjusted air quantity Q' ═ current target air quantity-S;
taking a reference frequency-air volume performance curve as f (x) ax, and an auxiliary curve as f ' (x) ax-D ', wherein a is a coefficient, x is frequency, D ' is a difference value D ', f (x), and f ' (x) are air volumes respectively;
substituting Q' into the auxiliary curve to obtain an adjustment frequency, and turning to W3;
v4, adopting an equal adjustment mode:
and reducing or increasing the initial frequency according to a preset equivalent frequency: if the difference D 'is a positive value, the initial frequency is added with the preset equivalent frequency to obtain an adjusting frequency, and if the difference D' is a negative value, the initial frequency is subtracted with the preset equivalent frequency to obtain the adjusting frequency; turning to W3; the preset equivalent frequency is a fixed frequency value or a value obtained by multiplying the preset percentage by the initial frequency; when the difference value D 'calculated this time is changed in sign compared with the difference value D' calculated last time, the preset equivalent frequency is calculated by multiplying the preset equivalent frequency adopted last time by the preset proportion.
Specifically, in V1, the difference limit L' is a fixed value or a value calculated by multiplying the current target air volume by a preset ratio; in W3, the target air volume allowable error E'pIs a value obtained by multiplying the preset error proportion by the current target air volume, or the allowable error E 'of the target air volume'pAnd the target air volume allowable error E in S2pAre equal. More specifically, in V1, the preset ratio is 10 ± 5%; in V4, the fixed frequency value is 1 +/-1 Hz, the preset percentage is 2 +/-1%, and the preset proportion is 50 +/-20%; in W3, the preset error ratio is 0.5-2%.
The further preferred embodiment described above relates to a graph as shown in figure 2. Preset highest frequency of use F in the figuremaxIs 50 Hz.
In addition, when the target air quantity QaimOr the current target air volume is not clear, and the target air volume is fitted step by step to test operation when the control is needed according to the target index related to the ventilation volume, and when the feedback according with the target index appears, the corresponding air volume is the target air volume.
The compost ventilation control method can also be applied to other industrial and agricultural scenes related to ventilation control, for example, a river aeration control method for intelligently and quickly fitting air volume.
The invention is described in further detail below with reference to embodiments and with reference to the drawings. The invention is not limited to the examples given.
Example 1
The embodiment adopts the basic technical scheme of the specific implementation.
The embodiment is suitable for a ventilation control mode of 'timed on-off periodic cycle control'. The method comprises the following specific steps:
1. firstly, it is assumed that the linearity of the frequency-air volume performance curve of the fan is high and is a straight line, the equation is f (x) ax (a is greater than 0, x is greater than or equal to 0 and less than or equal to 50), wherein the independent variable x is the fan frequency, the maximum value is 50Hz, and the dependent variable f (x) is the corresponding air volume of the main ventilation pipe under different frequency conditions. Measuring the maximum air quantity Q of the main ventilation pipe corresponding to the fan frequency of 50Hzmax＝2400m3And h, obtaining a (48) and obtaining a fan reference frequency-air volume performance curve, namely f (x) 48 x.
2. Set target air quantity QaimObtaining a reference frequency F corresponding to the reference frequency-air volume performance curvere。
The determination process of the target air volume comprises the following steps: according to the conventional compost operation indexes and the standard requirements, the standard air quantity recommended by the standard is preferably 0.05-0.20 m per cubic meter of material3Min, the median value of the standard recommendation of the target air quantity is 0.10m3The volume of the pile is multiplied by the min to obtain the target air volume; the volume of the stack of this example was 200m3If the target air volume is 0.10m3/min×200m3＝20m3Min, i.e. Qaim＝20m3/min×60min＝1200m3H, substituting into reference frequency-air quantity performance curve equation
f(x)＝48x；
1200＝48x；
x＝25；
Obtaining a reference frequency Fre＝25Hz。
3. In draught fans as referenceFrequency FreUnder the condition of 25Hz, measuring the actual air quantity Q corresponding to the actual frequency-air quantity performance curveacIs 1650m3/h。
4. Assumed target air quantity QaimThe frequency corresponding to the actual frequency-air volume performance curve is the target frequency Faim。
5. And calculating the difference value between the actual air volume and the target air volume to adjust the reference frequency, wherein the calculation result is 1650-1200-450, and the reference frequency needs to be reduced. At a reference frequency FreOn the basis of 25Hz, reducing the frequency to obtain an adjusting frequency; measuring the adjusted air volume corresponding to the actual frequency-air volume performance curve under the condition of adjusting the frequency, and when the difference value between the adjusted air volume and the target air volume is smaller than the target air volume allowable error EpWhen the air volume is adjusted, the corresponding adjusting frequency is regarded as the target frequency F obtained by the air volume feedback calculationaim，EpThe value is set to 0.5%, i.e., 1200 × 0.5% ═ 6.
The specific steps for adjusting the reference frequency are as follows:
(1) calculating a difference value D: difference D is actual air quantity Qac1650-target air quantity Qaim1200＝450，
(2) Setting a difference limit L: the difference limit is set to 10% of the target air volume, i.e., L equals the target air volume Qaim×10％＝1200×10％＝120，
(3) Selecting and using an adjusting mode: the difference D is 450 > the difference limit L is 120, a large-equal adjustment mode is selected,
(4) calculating a small value S of the difference adjustment and calculating and adjusting the air quantity Qca: small value of difference between adjustments
Calculating and adjusting air quantity QcaTarget air quantity QaimThe + adjustment small value S is 1200+90 1290,
(5) setting adjustment equal amount and allowable error: the adjustment equal is set to a fixed value of 1Hz, the allowable error EpSet as the target air quantity Qaim0.5% of (i), i.e.
Ep＝1200×0.5％；
Ep＝6(m3/h)；
(6) Adjusting air volume for 1 time: making an auxiliary straight line parallel to a fan reference frequency-air volume performance curve F (x) ax + D, wherein D is a difference value, and calculating the frequency of the auxiliary straight line F (x) ax + D corresponding to the adjusted air volume as 1 adjustment frequency F1，
f(x)＝48x+D；
1290＝48x+450；
x＝17.5；
To obtain F1＝17.5Hz；
Adjusting the frequency F for 1 time in the fan1Under the condition of 17.5Hz, 1 times of adjusted air quantity Q corresponding to the actual frequency-air quantity performance curve is measured1＝1358m3H; the relevant schematic diagram is shown in fig. 3;
(7) judging the allowable error for 1 time; calculate 1-time adjustment air quantity Q1With the target air quantity QaimDifference D of1，
D1＝Q1-Qaim；
D1＝1358-1200；
D1＝158＞Ep＝6；
Namely, the frequency needs to be continuously decreased to decrease the air volume,
(8) adjusting frequency F at 1 time1On the basis of 17.5Hz, 1 adjustment equal amount of 1Hz is reduced to obtain 2 adjustment frequencies F2Repeating the steps (6) and (7) when the frequency is 17.5-1 and the frequency is 16.5Hz, and measuring 2 times of adjusting air quantity Q corresponding to the actual frequency-air quantity performance curve2＝1275m3H, calculating 2 times of adjusting air quantity Q2With the target air quantity QaimDifference D of2＝75＞Ep＝6；
Namely, the frequency needs to be continuously decreased to decrease the air volume,
(9) adjusting frequency F at 2 times2On the basis of 16.5Hz, 1 adjustment equivalent of 1Hz is reduced to obtain 3 adjustment frequencies F3Repeating the steps (6) and (7) when the frequency is 16.5-1 and the frequency is 15.5Hz, and measuring the performance curve corresponding to the actual frequency-air volumeAdjusting the air quantity Q3 times3＝1167m3H, calculating the adjusted air quantity Q for 3 times3With the target air quantity QaimDifference D of3＝-33，∣D3∣＞Ep＝6，
Namely, the air quantity needs to be improved by increasing the frequency, the adjustment equal amount is reduced by half to 0.5Hz due to the change of the positive and negative signs of the difference value,
(10) adjusting frequency F at 3 times3On the basis of 15.5Hz, 0.5 adjustment equal amount is increased by 0.5Hz to obtain 4 adjustment frequencies F4Repeating the steps (6) and (7) when the frequency is 15.5+0.5 and the frequency is 16Hz, and measuring 4 times of adjusting air quantity Q corresponding to the actual frequency-air quantity performance curve4＝1212m3H, calculating 4 times of adjusting air quantity Q4With the target air quantity QaimDifference D of4＝12＞Ep＝6；
Namely, the frequency is required to be reduced to improve the air quantity, the adjustment equivalent is reduced by half to 0.25Hz due to the change of the sign of the difference value,
(11) adjusting frequency F at 4 times4On the basis of 16Hz, 0.25 adjustment equal amount is reduced by 0.25Hz to obtain 5 adjustment frequencies F5Repeating the steps (6) and (7) when the frequency is 16-0.25-15.75 Hz, and measuring 5 times of adjusting air quantity Q corresponding to the actual frequency-air quantity performance curve5＝1205m3H, calculating 5 times of adjusting air quantity Q5With the target air quantity QaimDifference D of4＝5＜Ep6, the requirement of allowable error is met;
i.e., F5The 15.75Hz adjustment frequency is the target frequency, Q, calculated by air volume feedback fitting5＝1205m3And/h is the fitted target air volume.
Example 2
The embodiment adopts the basic technical scheme and the preferable scheme of the specific implementation.
The embodiment is suitable for a composting 'temperature feedback control' ventilation control mode. The method comprises the following specific steps:
1. and (3) setting a ventilation stage: the material is garden waste crushed fine material, and the volume of the pile body is 200m3Height of 1.5m, nitrogen source of urea, microbial agent and waterThe ventilation control indexes are set as follows by using a centrifugal low-pressure fan according to the prior compost operation indexes and the standard requirements:
note: the temperature is the average temperature of 3 continuous time points, and the temperature time points are set as the whole points of 24 hours per day; ↓ indicates increasing air volume, and ↓ indicates decreasing air volume.
2. A temperature rising stage:
(1) according to the requirements: the initial air quantity of the piled material per cubic meter is 0.01m3Min, i.e. 0.01m3/min×60min×200m3＝120m3And h, the air pressure is not considered in the temperature rising stage, the ventilation time and the interval time are both 10min, and the ventilation quantity is 2 multiplied by 120 to 240m3H, according to the basic technical scheme of the embodiment 1, the initial ventilation rate in the heating stage is fitted to 240m3The operation is continued for h.
3. And (3) high-temperature stage:
and in the high-temperature stage, the system automatically operates according to the following mode according to the stack temperature monitoring data. The air volume is adjusted according to the preferred embodiment of the specific implementation.
(1) Standard mode:
according to the requirements: when the temperature exceeds 55 ℃, the standard air quantity per cubic meter of the material is 0.05m3Permin run, i.e. 0.05m3/min×60min×200m3＝600m3Ventilation time and interval time are both 15min, i.e. fitting 2 × 600 ═ 1200m3The ventilation/h is continuously operated.
(2) A cooling mode:
according to the requirements: when the temperature exceeds 65 ℃, the standard air quantity is 0.05m3On the basis of/min, the equivalent amount of 0.02m is adjusted according to the material per cubic meter3The air quantity is increased for operation at the interval of 3h for min1 time, ventilation time and interval time are both 15min, namely, the air quantity is increased by 2 multiplied by 240 to 480m3And h, when the temperature is lower than 65 ℃, continuously operating according to the current air volume, wherein the current air volume is the cooling air volume.
(3) Target temperature regulation mode (temperature regulation interval 5 ℃):
according to the requirements: in the process of cooling air flow operation, the operation is carried out according to a target temperature regulation and control mode of 60 ℃, namely
When the temperature is 60-65 ℃, the cooling air quantity is kept to operate continuously, the ventilation time and the interval time are both 15min,
when the temperature is 55-60 ℃, on the basis of the cooling air quantity, the equivalent amount of 0.01m is adjusted according to each cubic meter of material3The air quantity is reduced at the time of each 3h, the operation is carried out for 1 time, the ventilation time and the interval time are both 15min, namely the air quantity is reduced by 2 multiplied by 120 to 240m3H, reducing the air quantity to the standard at most when
The temperature is 60-65 ℃, the operation is continued according to the current air quantity, when the temperature is lower than 60 ℃ again, the equivalent amount of 0.01m is adjusted according to each cubic meter of materials on the basis of the current air quantity3The air quantity is reduced at the time of each 3h, the operation is carried out for 1 time, the ventilation time and the interval time are both 15min, namely the air quantity is reduced by 2 multiplied by 120 to 240m3The flow rate is reduced to the standard air flow at most,
the air volume adjusting mode is carried out according to the temperature cycle of the pile body.
3. Cooling stage
And (3) operating in a target temperature regulation mode, wherein the target temperatures are 55, 50, 45, 40 and 35 respectively, and stopping ventilation when the temperature of the stack is lower than 35 ℃ for two consecutive days. The air volume is adjusted according to the preferred embodiment of the specific implementation.
Example 3
The embodiment is a method for fitting air volume suitable for river aeration control, and the implementation mode is as follows:
1. and (3) ventilation setting: the river channel water depth changes between 1-2.5 m, and a three-level ventilation mode is adopted according to water quality and different water level conditions, and the ventilation control indexes are set as follows:
according to the ventilation requirement, a variable-frequency high-pressure vortex fan is adopted, and the maximum output air volume is 420m3Per h, maximum wind pressure kPa, and 40 aeration discs. The signal acquisition system comprises a water level meter and a gas flowmeter.
2. Air volume adjustment: according to the basic technical scheme of the specific implementation in the embodiment 1, the corresponding air volume is fitted to continuously operate according to the real-time water level parameters;
when the water level is lower than 1.5m, the air quantity of the fitting pipeline is 60m3H, operating according to mode I;
when the water level is 1.5-2 m, the air quantity of the fitting pipeline is 85m3H, operating according to a mode II;
when the water level is lower than 1.5-2 m, the air quantity of the fitting pipeline is 110m3And/h, operating in mode III.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (10)
1. A compost ventilation control method capable of intelligently and quickly fitting air volume is characterized by comprising the following steps:
firstly, assuming that a reference frequency-air volume performance curve of a fan is a straight line; determining the maximum frequency of use F of the fanmaxThe lower air volume is taken as the maximum air volume QmaxIn a frequency-air volume two-dimensional coordinate system, an origin point and a point (F)max，Qmax) Connecting to obtain a reference frequency-air volume performance curve of the fan;
secondly, according to the set target air quantity QaimCalculating the reference frequency F according to the reference frequency-air volume performance curvere(ii) a Determination of fan at reference frequency FreActual air quantity Qac；
Thirdly, assuming that the actual frequency-air volume performance curve of the fan is a smooth curve and the target air volume QaimThe corresponding frequency on the curve is the target frequencyFaim(ii) a Calculating to obtain the target frequency FaimThe process comprises the following steps:
s1, calculating actual air quantity QacMinus target air quantity QaimObtaining a difference D, and adjusting the reference frequency F according to the difference Dre: if the difference D is a positive value, reducing the frequency, and if the difference D is a negative value, increasing the frequency; the frequency obtained by adjustment is the adjustment frequency;
s2, measuring the adjusted air volume of the fan corresponding to the actual frequency-air volume performance curve under the adjusted frequency; judging and adjusting air quantity and target air quantity QaimWhether the absolute value of the difference value of (A) is less than or equal to a preset target air volume allowable error EpIf not, the adjusted air volume is taken as the actual air volume QacAnd using the adjusted frequency as a reference frequency FreGo to S1 to continue execution; if yes, the adjusting frequency is the target frequency F obtained by air quantity feedback calculationaimAnd controlling the fan to be at the frequency;
and S3, judging whether to finish the control, if so, finishing the control method.
2. A composting ventilation control method as claimed in claim 1, wherein the specific process of S1 includes:
t0 actual air quantity QacMinus target air quantity QaimObtaining a difference D;
t1, setting a difference limit L; judging whether the calculated difference D is calculated for the first time, if so, turning to T2, otherwise, turning to T4;
t2, judging the relation between the absolute value of the difference D and the difference limit L, if the absolute value of the difference D is larger than or equal to the difference limit L, turning to T3, and if the absolute value of the difference D is smaller than the difference limit L, turning to T4;
t3, adopting a large-equal adjustment mode:
calculating a small value of the difference between the two
Wherein D is a difference D, and L is a difference limit L [, [ 2 ]]Represents an integer part;
calculating the difference air quantityQ＝Qaim+ S, wherein QaimIs a target air quantity Qaim；
Taking a reference frequency-air volume performance curve as f (x) ═ ax, and an auxiliary curve as f '(x) ═ ax + D, wherein a is a coefficient, x is frequency, D is a difference value D, and f (x) and f' (x) are air volumes respectively;
substituting Q into the auxiliary curve to obtain an adjustment frequency, and turning to S2;
t4, adopting an equal adjustment mode:
according to a preset equivalent frequency to a reference frequency FrePerforming a decrease or increase: if the difference D is positive value, the reference frequency F is setreSubtracting the preset equivalent frequency to obtain the adjustment frequency, and if the difference D is negative, referring to the frequency FreAdding a preset equal frequency to obtain an adjusting frequency; transitioning to S2; wherein the content of the first and second substances,
the preset equal frequency is a fixed frequency value or is multiplied by a reference frequency F according to a preset percentagereThe calculated value of (a); when the difference value D calculated this time is changed in sign compared with the difference value D calculated last time, the preset equivalent frequency is calculated by multiplying the preset equivalent frequency adopted last time by the preset proportion.
3. A compost ventilation control method as claimed in claim 2, wherein said difference limit L is a fixed value or a preset ratio multiplied by a target air quantity Q in T1aimThe calculated value of (a); in S2, the target air volume allowable error EpIs multiplied by the target air quantity Q according to a preset error proportionaimThe calculated value of (1).
4. A compost ventilation control method as claimed in claim 3, wherein said preset proportion is 10 ± 5% in T1; in T4, the fixed frequency value is 1 +/-1 Hz, the preset percentage is 2 +/-1%, and the preset proportion is 50 +/-20%; in S2, the preset error proportion is 0.5-2%.
5. A compost ventilation control method as claimed in claim 1, wherein in step S3 of the third step, when judging whether to end the control, if the judgment result is no and there is a newly determined current target air volume, then go to W1;
w1, taking the current air volume as the initial air volume and the current frequency as the initial frequency; assuming that the frequency of the current target air volume on the actual frequency-air volume performance curve of the fan is the current target frequency;
w2, subtracting the initial air volume from the current target air volume to obtain a difference value D ', and adjusting the initial frequency according to the difference value D': if the difference D 'is a positive value, increasing the frequency, and if the difference D' is a negative value, decreasing the frequency; the frequency obtained by adjustment is the adjustment frequency;
w3, measuring the adjusted air volume of the fan corresponding to the actual frequency-air volume performance curve under the adjusted frequency; judging whether the absolute value of the difference value between the adjusted air volume and the current target air volume is less than or equal to a preset target air volume allowable error E'pIf not, taking the adjusted air volume as the current air volume and taking the adjusted frequency as the current frequency, and turning to W1 to continue execution; if so, the adjusting frequency is the current target frequency obtained through air volume feedback calculation, and the fan is controlled to be at the frequency;
w4, go to S3.
6. A compost ventilation control method as claimed in claim 5, wherein said W2 specific process includes:
v0, subtracting the initial air volume from the current target air volume to obtain a difference value D';
v1, setting a difference limit L'; judging whether the calculated difference D' is calculated for the first time, if so, turning to V2, and if not, turning to V4;
v2, judging the relation between the absolute value of the difference D 'and the difference limit L', if the absolute value of the difference D 'is larger than or equal to the difference limit L', turning to V3, and if the absolute value of the difference D 'is smaller than the difference limit L', turning to V4;
v3, adopting a large-equal adjustment mode:
calculating a small value of the difference between the two
Wherein D 'is a difference D', and L 'is a difference limit L', []Represents an integer part;
calculating difference-adjusted air quantity Q' ═ current target air quantity-S;
taking a reference frequency-air volume performance curve as f (x) ax, and an auxiliary curve as f ' (x) ax-D ', wherein a is a coefficient, x is frequency, D ' is a difference value D ', f (x), and f ' (x) are air volumes respectively;
substituting Q' into the auxiliary curve to obtain an adjustment frequency, and turning to W3;
v4, adopting an equal adjustment mode:
and reducing or increasing the initial frequency according to a preset equivalent frequency: if the difference D 'is a positive value, the initial frequency is added with the preset equivalent frequency to obtain an adjusting frequency, and if the difference D' is a negative value, the initial frequency is subtracted with the preset equivalent frequency to obtain the adjusting frequency; turning to W3; wherein the content of the first and second substances,
the preset equal frequency is a fixed frequency value or a value obtained by multiplying a preset percentage by an initial frequency; when the difference value D 'calculated this time is changed in sign compared with the difference value D' calculated last time, the preset equivalent frequency is calculated by multiplying the preset equivalent frequency adopted last time by the preset proportion.
7. A compost ventilation control method as claimed in claim 6, wherein in V1, said difference limit L' is a fixed value or a value calculated by multiplying the current target air volume by a preset ratio; in W3, the target air volume allowable error E'pIs a value obtained by multiplying a preset error proportion by the current target air volume, or the target air volume allowable error E'pAnd the target air volume allowable error E in S2pAre equal.
8. A compost ventilation control method as claimed in claim 7, wherein said preset proportion in V1 is 10 ± 5%; in V4, the fixed frequency value is 1 ± 1Hz, the preset percentage is 2 ± 1%, and the preset proportion is 50 ± 20%; in W3, the preset error proportion is 0.5-2%.
9. A compost ventilation control method as claimed in claim 6, characterized by that, when the target air quantity Q is reached, the compost ventilation control method is usedaimOr the current target air volume is not clear, and the target air volume is fitted step by step to test operation when the control is needed according to the target index related to the ventilation volume, and when the feedback according with the target index appears, the corresponding air volume is the target air volume.
10. A river aeration control method of intelligent fast fitting air volume, which is characterized in that the air volume of an aerator is controlled by adopting the compost aeration control method of intelligent fast fitting air volume of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410843.9A CN113087558B (en) | 2021-04-15 | 2021-04-15 | Compost ventilation control method capable of intelligently and quickly fitting air volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410843.9A CN113087558B (en) | 2021-04-15 | 2021-04-15 | Compost ventilation control method capable of intelligently and quickly fitting air volume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113087558A true CN113087558A (en) | 2021-07-09 |
| CN113087558B CN113087558B (en) | 2022-07-12 |
Family
ID=76678435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110410843.9A Active CN113087558B (en) | 2021-04-15 | 2021-04-15 | Compost ventilation control method capable of intelligently and quickly fitting air volume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113087558B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853817A (en) * | 2023-02-27 | 2023-03-28 | 海澜智云科技有限公司 | Video judgment system for frequency conversion energy-saving safety protection of fan |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110962A (en) * | 1994-04-26 | 1995-11-01 | 机械电子工业部机械工业环境保护技术研究所 | Blast aeration automatic control system |
| CN104654538A (en) * | 2013-11-21 | 2015-05-27 | 深圳市中兴康讯电子有限公司 | Method and device for controlling air output |
| CN105404235A (en) * | 2015-12-11 | 2016-03-16 | 宜宾五粮液股份有限公司 | Aerobic composting apparatus with inelegant ventilation control, and control method and control system thereof |
| EP3040221A2 (en) * | 2014-12-29 | 2016-07-06 | Hon Hai Precision Industry Co., Ltd. | Air-conditioner controlling method and vehicle control system employing the same |
| CN108225426A (en) * | 2018-01-10 | 2018-06-29 | 中国农业大学 | A kind of Portable membrane compost intellectual monitoring control device and its application method |
| CN108375175A (en) * | 2018-02-08 | 2018-08-07 | 珠海格力电器股份有限公司 | Air conditioner system control method and device |
| CN108710300A (en) * | 2018-05-31 | 2018-10-26 | 中冶华天工程技术有限公司 | It is sintered air quantity control method |
| CN112594897A (en) * | 2020-12-17 | 2021-04-02 | 珠海格力电器股份有限公司 | Air conditioner ventilation control method, device and system for culture place and air conditioner |
-
2021
- 2021-04-15 CN CN202110410843.9A patent/CN113087558B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110962A (en) * | 1994-04-26 | 1995-11-01 | 机械电子工业部机械工业环境保护技术研究所 | Blast aeration automatic control system |
| CN104654538A (en) * | 2013-11-21 | 2015-05-27 | 深圳市中兴康讯电子有限公司 | Method and device for controlling air output |
| EP3040221A2 (en) * | 2014-12-29 | 2016-07-06 | Hon Hai Precision Industry Co., Ltd. | Air-conditioner controlling method and vehicle control system employing the same |
| CN105404235A (en) * | 2015-12-11 | 2016-03-16 | 宜宾五粮液股份有限公司 | Aerobic composting apparatus with inelegant ventilation control, and control method and control system thereof |
| CN108225426A (en) * | 2018-01-10 | 2018-06-29 | 中国农业大学 | A kind of Portable membrane compost intellectual monitoring control device and its application method |
| CN108375175A (en) * | 2018-02-08 | 2018-08-07 | 珠海格力电器股份有限公司 | Air conditioner system control method and device |
| CN108710300A (en) * | 2018-05-31 | 2018-10-26 | 中冶华天工程技术有限公司 | It is sintered air quantity control method |
| CN112594897A (en) * | 2020-12-17 | 2021-04-02 | 珠海格力电器股份有限公司 | Air conditioner ventilation control method, device and system for culture place and air conditioner |
Non-Patent Citations (2)
| Title |
|---|
| 王梅: "变频调速技术在矿井主通风机节能改造中的应用", 《煤炭技术》 * |
| 王梅: "变频调速技术在矿井主通风机节能改造中的应用", 《煤炭技术》, 31 May 2013 (2013-05-31), pages 46 - 48 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853817A (en) * | 2023-02-27 | 2023-03-28 | 海澜智云科技有限公司 | Video judgment system for frequency conversion energy-saving safety protection of fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113087558B (en) | 2022-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107986428B (en) | Sewage treatment accurate aeration method | |
| CN105571073B (en) | A kind of subway station air-conditioner water system frequency conversion control energy-saving method | |
| CN113087558B (en) | Compost ventilation control method capable of intelligently and quickly fitting air volume | |
| JP5685504B2 (en) | Water treatment system and aeration air volume control method thereof | |
| KR20150096407A (en) | Optimized process and aeration performance with an advanced control algorithm | |
| CN113104961B (en) | Real-time aeration accurate control method based on activated sludge treatment sewage process | |
| CN107555590A (en) | A kind of multi-point combination formula accurate aeration control method | |
| JP2023063543A (en) | Wastewater treatment system, air supply amount control equipment and air supply amount control method | |
| CN108678986B (en) | The control method and device of the automatic adjustment of sewage treatment plant's air blower and marshalling operation | |
| CN111484124A (en) | Intelligent control and biochemical process intensive method and system for sewage treatment | |
| CN104531522A (en) | Expert control system for process of expressing foreign protein by recombinant pichia pastoris | |
| CN215376125U (en) | Intelligent compost ventilation control system | |
| CN208413970U (en) | Accurate aeration control system | |
| CN102491507A (en) | Method and device of automatic control for sequencing batch type treatment process at non-DO state | |
| JP2006335630A (en) | Apparatus and method for composting | |
| CN109197612B (en) | Energy-saving environment control system for pig farm and control method thereof | |
| CN103539494A (en) | Bin type sludge aerobic composting method | |
| CN115146776A (en) | Intelligent control method and system for aerobic composting of sludge | |
| CN202358957U (en) | Automatic control device for sequencing batch processing process in non-DO state | |
| CN209411908U (en) | A kind of accurate feeder of wastewater treatment | |
| CN106219739A (en) | Multiple spot variable aeration amount intelligent integral complete set of equipments and control method thereof | |
| CN117682656B (en) | System and method for calculating and controlling AAO sewage treatment process gas quantity | |
| CN218232242U (en) | Aerobic compost ventilation aeration system | |
| EP1598712A1 (en) | Method and device for controlling the biological process in waste-water treatment plants | |
| CN115215438B (en) | Precise aeration and dosing combined control method and system for multi-stage AO biochemical pool |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 210029 No. 223, Guangzhou Road, Nanjing, Jiangsu Applicant after: NANJING HYDRAULIC Research Institute Applicant after: NANJING R & D TECH GROUP Co.,Ltd. Address before: 210029 No. 223, Guangzhou Road, Gulou District, Jiangsu, Nanjing Applicant before: NANJING R & D TECH GROUP Co.,Ltd. Applicant before: NANJING HYDRAULIC Research Institute |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |