CN112379047A - Multi-livestock and poultry house environment quality continuous monitoring system and monitoring method - Google Patents
Multi-livestock and poultry house environment quality continuous monitoring system and monitoring method Download PDFInfo
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- CN112379047A CN112379047A CN202011215522.5A CN202011215522A CN112379047A CN 112379047 A CN112379047 A CN 112379047A CN 202011215522 A CN202011215522 A CN 202011215522A CN 112379047 A CN112379047 A CN 112379047A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure, temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0044—Specially adapted to detect a particular component for H2S, sulfides
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0054—Specially adapted to detect a particular component for ammonia
Abstract
The invention provides a multi-livestock and poultry house environment quality continuous monitoring system which comprises a far-end environment quality monitoring point arranged at any position in a livestock and poultry house, an environment quality monitoring device for continuously monitoring gas to be detected sucked from the far-end environment quality monitoring point, and an air filtering mechanism arranged on an air inlet pipeline, wherein the far-end environment quality monitoring point is arranged at a position in the livestock and poultry house; the environment quality monitoring device comprises a gas monitor, a sensor and a gas buffer; and the gas to be measured is discharged to the external atmosphere from the gas outlet of the gas buffer after being measured by the environment quality monitoring device. The invention also provides a method for continuously monitoring the environmental quality of the multi-livestock and poultry house. The continuous monitoring system and the monitoring method for the environment quality of the multi-livestock and poultry house can monitor the environment quality in the livestock and poultry house in real time, calibrate the sensor on line at the same time, improve the accuracy of the test and further realize the optimized management of the environment in the multi-livestock and poultry house.
Description
Technical Field
The invention belongs to the field of environmental monitoring, and particularly relates to a continuous monitoring system and a continuous monitoring method for environmental quality of a multi-livestock poultry house.
Background
The environmental quality in livestock and poultry facilities is one of the main factors influencing livestock and poultry production, and ammonia (NH) generated in the excrement management process in the livestock and poultry breeding facilities3) Hydrogen sulfide (H)2S) and carbon dioxide (CO)2) Is an important gas pollutant which affects the environmental quality of livestock and poultry facilities. Researches show that ventilation in the livestock and poultry house is reduced for keeping a proper environmental temperature in winter, so that the content of ammonia, hydrogen sulfide and carbon dioxide is too high, the environmental quality in the house is rapidly deteriorated, the morbidity of livestock and poultry is remarkably increased, and meanwhile, the health of breeding personnel and animals is further influenced. In order to optimize the environmental quality in the cultivation facility, ammonia (NH) in the house is required3) Hydrogen sulfide (H)2S) and carbon dioxide (CO)2) Is measured so as to know the environmental quality condition in the house and realize the accurate control of the ventilation system. In the prior art, ammonia gas (NH) is used in livestock and poultry houses3) Hydrogen sulfide (H)2S) and carbon dioxide (CO)2) Most of the monitoring equipment adopts a portable determinator, and although the simultaneous determination of various indexes can be realized, the manual field determination is needed, and the continuous monitoring of the environment quality of the livestock and poultry house cannot be realized; even if part of monitoring equipment realizes continuous measurement, the monitoring sensor is seriously corroded due to the fact that a field monitoring mode is mostly adopted for higher water vapor and dust concentration in the livestock and poultry house, the sensor needs to be frequently replaced, and the use cost is increased; and the sensor can not be calibrated on line at the same time, and still needs manual calibration, so that the measured data is deviated, and the accuracy of data measurement is seriously influenced.
In summary, a system and a method for continuously monitoring the environmental quality in the livestock and poultry house and calibrating the sensors on line at the same time are in need of development.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a continuous monitoring system and a monitoring method for monitoring the environmental quality of a multi-animal house, so as to achieve real-time sustainable monitoring of the air quality in the multi-animal house and simultaneously calibrate sensors on line, improve the accuracy of testing, and further achieve optimal management of the environment in the animal house.
In order to achieve the above and other related objects, the present invention provides a continuous monitoring system for environmental quality of multiple livestock and poultry houses, comprising a remote environmental quality monitoring point 100 disposed at any position in the livestock and poultry house, an environmental quality monitoring device 300 disposed outside the livestock and poultry house and continuously monitoring the gas to be detected pumped from the remote environmental quality monitoring point 100 through an air intake pipeline 200, and an air filtering mechanism 400 disposed on the air intake pipeline and filtering, dedusting and dehumidifying the gas to be detected passing through the air intake pipeline; the environmental quality monitoring device 300 comprises a gas monitor for monitoring parameters of gas to be measured, a sensor 304 connected with the gas monitor nearby, and a gas buffer 305 for sealing the sensor 304 therein, stabilizing the gas flow of the gas to be measured flowing from the air outlet of the air filtering mechanism and reducing the flow rate of the gas flow; the gas to be measured is discharged to the external atmosphere from the gas buffer gas outlet 3052 after being measured by the environmental quality monitoring device 300.
Preferably, a flow meter 307 for monitoring the flow rate of the gas to be detected is further arranged on a pipeline between the air outlet end of the air filtering mechanism and the air inlet end of the environment quality monitoring device; the ground clearance of the air outlet of the flowmeter is not higher than the ground clearance of the air inlet of the environment quality monitoring device.
Preferably, the air filtering mechanism 400 includes a stage 1 air cleaner 401, a stage 2 air filter 402, a diaphragm air pump 403 and an electromagnetic valve 404 which are sequentially connected by pipes along the air flowing direction, the stage 1 air cleaner filters dust particles with larger pore diameters, the stage 2 air filter 402 filters dust particles with smaller pore diameters, and the two stages of air filters also perform the dehumidification function.
Preferably, the gas damper 305 is a column with a U-shaped longitudinal section; the air inlet 3051 of the air buffer is arranged at the bottom of the U shape, and the air outlet 3052 of the air buffer is arranged at the upper part of the U shape.
Preferably, a sealing ring 306 for sealing the sensor 304 is arranged on the inner wall or the top end of the upper part of the gas buffer; the inner wall of the gas buffer is provided with a spiral groove, and the pitch of the spiral groove is gradually increased along with the rising of the height or is equal in pitch.
Preferably, the gas monitor comprises CO connected in series along the gas flow direction2Monitor 301, H2S monitor 302 and NH3 monitor 303; with CO2Monitor 301, H2The gas buffers 305 corresponding to the S monitor 302 and the NH3 monitor 303 are sequentially connected end to end; CO22Sensor 3041, H2S sensor 3042 and NH3Sensor 3043 separately associated with CO2Monitor, H2S monitor and NH3The monitors are correspondingly connected; CO22Monitor gas buffer gas outlet ground clearance is not less than H2S monitor gas buffer gas inlet ground clearance, H2The height of the gas outlet of the gas buffer of the S monitor above the ground is not less than NH3Monitor gas buffer air inlet ground clearance.
Preferably, the system also comprises a sensor online calibration gas acquisition device, which comprises a system exhaust mechanism and a standard gas acquisition mechanism 500, wherein the system exhaust mechanism and the standard gas acquisition mechanism are arranged outside the livestock and poultry house and are respectively connected with the gas inlet of the flow meter; the system exhaust mechanism comprises a 1-stage air filter 401, a 2-stage air filter 402, a diaphragm air pump 403 and an electromagnetic valve 404 which are sequentially connected along the air flow direction, wherein an air inlet of the 1-stage air filter is communicated with the outside atmosphere; the standard gas collection mechanism 500 comprises H connected in parallel2S standard gas acquisition unit and CO2Standard gas acquisition unit and NH3And a standard gas collection unit.
Preferably, said H2The S standard gas collecting unit comprises H connected in sequence along the gas flow direction2S, a standard gas steel cylinder 501, a diaphragm air pump 403 and an electromagnetic valve 404; the CO is2The standard gas acquisition unit comprises a CO2 standard gas steel cylinder 502, a diaphragm gas pump 403 and an electromagnetic valve 404 which are sequentially connected along the gas flow direction; the NH3The standard gas collecting unit comprises a gas flow directionAn NH3 standard gas steel cylinder 503, a diaphragm air pump 403 and an electromagnetic valve 404 which are connected in sequence.
Preferably, data signals of all monitors are transmitted to the data acquisition unit 601 through respective data transmission lines 600, and are displayed on the computer terminal 602 after data conversion by the data acquisition unit 601; the logic controller 603 controls the switching logic of all the diaphragm air pumps 403 and all the electromagnetic valves 404 and is electrically connected with the data acquisition unit 601, the logic controller 603, the data acquisition unit 601, all the diaphragm air pumps 403, all the electromagnetic valves 404, all the monitors and computers are powered by 220V power supplies and 24V power supplies, and the equipment can be arranged in the protective box 604 except the computers.
A monitoring method adopting the continuous monitoring system for the environmental quality of the multi-livestock and poultry house comprises the following steps:
step 1, exhausting air in a pipeline:
the logic controller 603 closes all the diaphragm air pumps 403 and the electromagnetic valves 404 of the air filtering mechanism 400, closes all the diaphragm air pumps 403 and the electromagnetic valves 404 of the standard gas collecting mechanism 500, opens the diaphragm air pumps 403 and the electromagnetic valves 404 of the system exhaust mechanism, and the outside air enters the monitoring system to discharge the original gas in the monitoring system to the outside through the gas buffer gas outlet 3052;
step 2, calibrating the sensor on line:
opening a diaphragm air pump 403 and an electromagnetic valve 404 of a certain standard gas acquisition mechanism 500 through a logic controller 603, closing the diaphragm air pump 403 and the electromagnetic valve 404 of a system exhaust mechanism, performing online calibration on sensors of standard gas in a standard gas steel cylinder after the standard gas flows through a corresponding gas buffer 305, closing the diaphragm air pump 403 and the electromagnetic valve 404 of the standard gas acquisition mechanism 500, and circulating the step until all the sensors are subjected to online calibration;
and 3, continuously monitoring on line:
opening a diaphragm air pump 403 and an electromagnetic valve 404 of an air filtering mechanism 400 corresponding to a certain remote environmental quality monitoring point 100 in a livestock and poultry house through a logic controller 603, closing the diaphragm air pumps 403 and the electromagnetic valves 404 of all standard gas acquisition mechanisms 500, closing the diaphragm air pump 403 and the electromagnetic valve 404 of a system exhaust mechanism, filtering, dedusting and dehumidifying gas to be measured sucked into the monitoring system from the monitoring point through the air filtering mechanism 400, entering a gas buffer for buffering, discharging the gas to the outside through a gas buffer gas outlet 3052 after being measured by a monitor and a sensor 304, transmitting the measured data to a data collector 601 through a data transmission line 600, displaying the data at a computer terminal 602 after data conversion of the data collector 601, and closing the diaphragm air pump 403 and the electromagnetic valve 404 of the air filtering mechanism 400 corresponding to the monitoring point; the step is circulated, and all the remote environment quality monitoring points 100 needing to be monitored are continuously monitored on line; if the sensor is found to be inaccurate in measurement and needs to be calibrated in the monitoring process, the step 2 is circulated to finish the online calibration of the sensor.
The continuous monitoring system and the monitoring method for the environmental quality of the multi-livestock and poultry house have the following beneficial effects:
1) the monitoring system and the method adopt the air pump to suck the air of the environmental quality monitoring point at any position of the far end into the measuring sensor through the pipeline with the filter for measurement, reduce the corrosion of water vapor, dust, ammonia gas and hydrogen sulfide to the sensor, prolong the service life of the sensor, simultaneously realize the continuous monitoring of the environmental quality in a plurality of livestock houses, reduce the cost of equipment and improve the measuring efficiency;
2) the air buffer with the U-shaped longitudinal section is adopted, so that the air flow of the gas to be measured flowing from the air outlet of the air filtering mechanism is stabilized, the flow speed of the gas to be measured is reduced, and a foundation is provided for accurate measurement of the sensor;
3) the continuous monitoring system and the method for the environmental quality of the multi-livestock and poultry house can carry out field calibration on the sensor through the gas supply design of the standard gas, do not need manual calibration, improve the accuracy of data determination, provide data support for realizing accurate management of the environmental quality of the livestock and poultry house, and have important significance for realizing sustainable animal production.
Drawings
FIG. 1 is a schematic view of a continuous monitoring system for environmental quality of a multi-animal poultry house according to the present invention;
FIG. 2 is a schematic view of a gas buffer according to the present invention;
FIG. 3 is a schematic longitudinal sectional view of the gas damper according to the present invention;
FIG. 4 is a schematic diagram of a longitudinal cross-sectional view of a gas damper having a constant pitch groove according to the present invention;
FIG. 5 is a schematic longitudinal sectional view of a gas damper according to the present invention having non-uniform pitch grooves therein;
wherein, 100-remote environment quality monitoring points; 200-an air intake line; 300-an environmental quality monitoring device; 301-CO2A monitor; 302-H2S, monitoring by using a monitor; 303-NH3A monitor; 304-a sensor; 3041-CO2A sensor; 3042-H2An S sensor; 3043-NH3A sensor; 305-a gas buffer; 3051-gas buffer inlet; 3052-gas buffer outlet; 3053-a helical groove; 306-a sealing ring; 307-a flow meter; 400-an air filtration mechanism; a 401-1 stage air cleaner; 402-2 stage air filter; 403-diaphragm air pump; 404-a solenoid valve; 500-standard gas collection mechanism; 501-H2S, standard gas steel cylinder; 502-CO2A standard gas cylinder; 503-NH3A standard gas cylinder; 600-a data transmission line; 601-data collector; 602-a computer terminal; 603-a logic controller; 604-protective box.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Referring to fig. 1 to 5, the structures, the ratios, the sizes, and the like shown in the drawings attached to the present specification are only used for understanding and reading the disclosure of the present specification, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "top", "upper", "lower" and "inner" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Example 1:
as shown in fig. 1, the present invention provides a continuous monitoring system for environmental quality of multiple livestock and poultry houses, which comprises a remote environmental quality monitoring point 100 disposed at any position in the livestock and poultry house, an environmental quality monitoring device 300 disposed outside the livestock and poultry house and continuously monitoring the gas to be detected pumped from the remote environmental quality monitoring point 100 through an air intake pipeline 200, and an air filtering mechanism 400 disposed on the air intake pipeline and used for filtering, dedusting and dehumidifying the gas to be detected passing through the air intake pipeline; the environmental quality monitoring device 300 comprises a gas monitor for monitoring parameters of gas to be measured, a sensor 304 connected with the gas monitor nearby, and a gas buffer 305 for sealing the sensor 304 therein, stabilizing the gas flow of the gas to be measured flowing from the air outlet of the air filtering mechanism and reducing the flow rate of the gas flow; the gas to be measured is discharged to the external atmosphere from the gas buffer gas outlet 3052 after being measured by the environmental quality monitoring device 300.
As shown in fig. 2 and 3, a flow meter 307 for monitoring the flow rate of the gas to be measured is further arranged on the pipeline between the air outlet end of the air filtering mechanism and the air inlet end of the environment quality monitoring device; the ground clearance of the air outlet of the flowmeter is not higher than the ground clearance of the air inlet of the environment quality monitoring device.
The air filtering mechanism 400 comprises a 1-stage air filter 401, a 2-stage air filter 402, a diaphragm air pump 403 and an electromagnetic valve 404 which are sequentially connected by pipelines along the air flowing direction, wherein the 1-stage air filter filters dust particles with large aperture, the 2-stage air filter 402 filters dust particles with small aperture, and the two-stage air filter also plays a role in dehumidification.
The gas buffer 305 is a column with a U-shaped longitudinal section; the air inlet 3051 of the air buffer is arranged at the bottom of the U shape, and the air outlet 3052 of the air buffer is arranged at the upper part of the U shape.
As shown in fig. 2, a sealing ring 306 for sealing the sensor 304 is provided on the upper inner wall or top end of the gas buffer.
The gas monitor comprises CO sequentially connected along the gas flow direction2Monitor 301, H2S monitor 302 and NH3 A monitor 303; with CO2Monitor 301, H2S monitor 302 and NH3The gas buffers 305 corresponding to the monitors 303 are sequentially connected end to end; CO22Sensor 3041, H2S sensor 3042 and NH3Sensor 3043 separately associated with CO2Monitor, H2S monitor and NH3The monitors are correspondingly connected; CO22Monitor gas buffer gas outlet ground clearance is not less than H2S monitor gas buffer gas inlet ground clearance, H2The height of the gas outlet of the gas buffer of the S monitor above the ground is not less than NH3The height of an air inlet of an air buffer of the monitor above the ground; the CO can be obtained by adopting sensors with different lengths or arranging gas buffers with different heights on the inner wall2Sensor 3041 the tip needs to be placed in the CO2The bottom of the gas buffer of the monitor; h2The S sensor 3042 should be placed at the end H2Middle part in gas buffer of S monitor, and NH3Sensor 3043 requires placement in NH3Monitor gas buffer upper portion.
The system also comprises a sensor on-line calibration gas acquisition device, which comprises a system exhaust mechanism and a standard gas acquisition mechanism 500, wherein the system exhaust mechanism and the standard gas acquisition mechanism are arranged outside the livestock and poultry house and are respectively connected with the gas inlet of the flow meter; the system exhaust mechanism comprises a 1-stage air filter 401, a 2-stage air filter 402, a diaphragm air pump 403 and an electromagnetic valve 404 which are sequentially connected along the air flow direction, wherein an air inlet of the 1-stage air filter is communicated with the outside atmosphere; the standard gas collection mechanism 500 comprises H connected in parallel2S standard gas acquisition unit and CO2Standard gas acquisition unit and NH3And a standard gas collection unit.
Said H2The S standard gas acquisition unit comprises an H2S standard gas steel cylinder 501, a diaphragm gas pump 403 and an electromagnetic valve 404 which are sequentially connected along the gas flow direction; the CO is2The standard gas collection unit comprises a rim gasA CO2 standard gas steel cylinder 502, a diaphragm air pump 403 and an electromagnetic valve 404 which are connected in sequence in the flow direction; the NH3The standard gas collecting unit comprises an NH3 standard gas steel cylinder 503, a diaphragm air pump 403 and an electromagnetic valve 404 which are sequentially connected along the gas flow direction.
Data signals of all monitors are transmitted to the data acquisition unit 601 through respective data transmission lines 600, and are displayed on the computer terminal 602 after data conversion of the data acquisition unit 601; the logic controller 603 controls the switching logic of all the diaphragm air pumps 403 and all the electromagnetic valves 404 and is electrically connected with the data acquisition unit 601, the logic controller 603, the data acquisition unit 601, all the diaphragm air pumps 403, all the electromagnetic valves 404, all the monitors and computers are powered by 220V power supplies and 24V power supplies, and the equipment can be arranged in the protective box 604 except the computers.
Example 2:
the system structure is the same as that of the embodiment 1, and the inner wall of the gas buffer is provided with a spiral groove, and the pitch of the spiral groove is gradually increased along with the increase of the height, as shown in figure 4.
Example 3:
the system structure is the same as that of the embodiment 1, and the inner wall of the gas buffer is provided with a spiral groove, and the pitch of the spiral groove is equal pitch, as shown in figure 5.
Example 4:
the monitoring method adopting the continuous monitoring system for the environmental quality of the multi-livestock and poultry house in any one of the embodiments 1 to 3 comprises the following steps:
step 1, exhausting air in a pipeline:
the logic controller 603 closes all the diaphragm air pumps 403 and the electromagnetic valves 404 of the air filtering mechanism 400, closes all the diaphragm air pumps 403 and the electromagnetic valves 404 of the standard gas collecting mechanism 500, opens the diaphragm air pumps 403 and the electromagnetic valves 404 of the system exhaust mechanism, and the outside air enters the monitoring system to discharge the original gas in the monitoring system to the outside through the gas buffer gas outlet 3052;
step 2, calibrating the sensor on line:
opening a diaphragm air pump 403 and an electromagnetic valve 404 of a certain standard gas acquisition mechanism 500 through a logic controller 603, closing the diaphragm air pump 403 and the electromagnetic valve 404 of a system exhaust mechanism, performing online calibration on sensors of standard gas in a standard gas steel cylinder after the standard gas flows through a corresponding gas buffer 305, closing the diaphragm air pump 403 and the electromagnetic valve 404 of the standard gas acquisition mechanism 500, and circulating the step until all the sensors are subjected to online calibration;
and 3, continuously monitoring on line:
opening a diaphragm air pump 403 and an electromagnetic valve 404 of an air filtering mechanism 400 corresponding to a certain remote environmental quality monitoring point 100 in a livestock and poultry house through a logic controller 603, closing the diaphragm air pumps 403 and the electromagnetic valves 404 of all standard gas acquisition mechanisms 500, closing the diaphragm air pump 403 and the electromagnetic valve 404 of a system exhaust mechanism, filtering, dedusting and dehumidifying gas to be measured sucked into the monitoring system from the monitoring point through the air filtering mechanism 400, entering a gas buffer for buffering, discharging the gas to the outside through a gas buffer gas outlet 3052 after being measured by a monitor and a sensor 304, transmitting the measured data to a data collector 601 through a data transmission line 600, displaying the data at a computer terminal 602 after data conversion of the data collector 601, and closing the diaphragm air pump 403 and the electromagnetic valve 404 of the air filtering mechanism 400 corresponding to the monitoring point; the step is circulated, and all the remote environment quality monitoring points 100 needing to be monitored are continuously monitored on line; if the sensor is found to be inaccurate in measurement and needs to be calibrated in the monitoring process, the step 2 is circulated to finish the online calibration of the sensor.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A multi-livestock and poultry house environment quality continuous monitoring system is characterized by comprising a far-end environment quality monitoring point arranged at any position in a livestock and poultry house, an environment quality monitoring device which is arranged outside the livestock and poultry house and is used for continuously monitoring gas to be detected and sucked from the far-end environment quality monitoring point through an air inlet pipeline, and an air filtering mechanism which is arranged on the air inlet pipeline and is used for filtering, dedusting and dehumidifying the gas to be detected and passes through the air inlet pipeline; wherein the content of the first and second substances,
the environment quality monitoring device comprises a gas monitor for monitoring parameters of gas to be detected, a sensor connected with the gas monitor nearby, and a gas buffer for sealing the sensor, stabilizing the gas flow of the gas to be detected flowing from the air outlet of the air filtering mechanism and reducing the flow rate of the gas flow; and the gas to be measured is discharged to the external atmosphere from the gas outlet of the gas buffer after being measured by the environment quality monitoring device.
2. The continuous monitoring system for environmental quality of multi-animal poultry house according to claim 1, characterized in that a flow meter for monitoring the flow rate of the gas to be measured is further arranged on the pipeline between the air outlet end of the air filtering mechanism and the air inlet end of the environmental quality monitoring device; the ground clearance of the air outlet of the flowmeter is not higher than the ground clearance of the air inlet of the environment quality monitoring device.
3. The system for continuously monitoring the environmental quality of a multi-animal poultry house according to claim 2, wherein the air filtering mechanism comprises a 1-stage air filter, a 2-stage air filter, a diaphragm air pump and an electromagnetic valve which are sequentially connected by pipelines along the air flowing direction.
4. A system for continuously monitoring the environmental quality of a multi-animal poultry house according to any one of claims 1 to 3, wherein the gas buffer is a column with a U-shaped longitudinal section; the air inlet of the air buffer is arranged at the bottom of the U shape, and the air outlet of the air buffer is arranged at the upper part of the U shape.
5. The system for continuously monitoring the environmental quality of a multi-animal poultry house according to claim 4, wherein a sealing ring for sealing the sensor is provided on the inner wall or top end of the upper part of the gas buffer; the inner wall of the gas buffer is provided with a spiral groove, and the pitch of the spiral groove is gradually increased along with the rising of the height or is equal in pitch.
6. The continuous monitoring system for environmental quality of a multi-animal poultry house according to claim 5, wherein the gas monitor comprises CO connected in series along the gas flow direction2Monitor, H2S monitor and NH3A monitor; with CO2Monitor, H2S monitor and NH3Gas buffers corresponding to the monitors are sequentially connected end to end; CO22Sensor, H2S sensor and NH3The sensors being separately associated with CO2Monitor, H2S monitor and NH3The monitors are correspondingly connected; CO22Monitor gas buffer gas outlet ground clearance is not less than H2S monitor gas buffer gas inlet ground clearance, H2The height of the gas outlet of the gas buffer of the S monitor above the ground is not less than NH3Monitor gas buffer air inlet ground clearance.
7. The continuous monitoring system for environmental quality of multi-animal poultry house according to claim 1, 2, 3, 5 or 6, characterized by further comprising a sensor on-line calibration gas collection device, which comprises a system exhaust mechanism and a standard gas collection mechanism, which are arranged outside the poultry house and are respectively connected with the gas inlet of the flow meter; the system exhaust mechanism comprises a level 1 air filter, a level 2 air filter, a diaphragm air pump and an electromagnetic valve which are sequentially connected along the air flow direction, wherein an air inlet of the level 1 air filter is communicated with the outside atmosphere; the standard gas collecting mechanism comprises H connected in parallel2S standard gas acquisition unit and CO2Standard gas acquisition unit and NH3And a standard gas collection unit.
8. The multiple poultry house environmental quality continuous monitoring system of claim 7, wherein the H, is2The S standard gas collecting unit comprises H connected in sequence along the gas flow direction2S, a standard gas steel cylinder, a diaphragm air pump and an electromagnetic valve; the CO is2Standard gas productionThe integrated unit comprises CO connected in sequence along the gas flow direction2A standard gas steel cylinder, a diaphragm air pump and an electromagnetic valve; the NH3The standard gas collecting unit comprises NH connected in sequence along the gas flow direction3A standard gas steel cylinder, a diaphragm air pump and an electromagnetic valve.
9. The continuous monitoring system for environmental quality of multi-animal poultry house according to claim 8, characterized in that the data signals of all monitors are transmitted to the data collector through respective data transmission lines, and are displayed on the computer terminal after data conversion by the data collector; the logic controller controls the on-off logics of all the diaphragm air pumps and all the electromagnetic valves and is electrically connected with the data acquisition unit.
10. A method of monitoring using the continuous multi-animal poultry house environmental quality monitoring system of claim 9, comprising the steps of:
step 1, exhausting air in a pipeline:
the diaphragm air pumps and the electromagnetic valves of all the air filtering mechanisms are closed through the logic controller, the diaphragm air pumps and the electromagnetic valves of all the standard gas collecting mechanisms are closed, the diaphragm air pumps and the electromagnetic valves of the system exhaust mechanism are opened, and the outside air enters the monitoring system and is exhausted to the outside through the air outlet of the gas buffer;
step 2, calibrating the sensor on line:
opening a diaphragm air pump and an electromagnetic valve of a certain standard gas acquisition mechanism through a logic controller, closing the diaphragm air pump and the electromagnetic valve of a system exhaust mechanism, performing online calibration on a sensor of a standard gas in a standard gas steel cylinder after the standard gas flows through a corresponding gas buffer, and closing the diaphragm air pump and the electromagnetic valve of the standard gas acquisition mechanism, and circulating the step until all the sensors are subjected to online calibration;
and 3, continuously monitoring on line:
opening a diaphragm air pump and an electromagnetic valve of an air filtering mechanism corresponding to a certain remote environmental quality monitoring point in a livestock and poultry house through a logic controller, closing the diaphragm air pumps and the electromagnetic valves of all standard gas acquisition mechanisms, closing the diaphragm air pumps and the electromagnetic valves of a system exhaust mechanism, filtering, dedusting and dehumidifying gas to be detected pumped into a monitoring system from the monitoring point through the air filtering mechanism, entering a gas buffer for buffering, discharging the gas to the outside through a gas outlet of the gas buffer after being measured by a monitor and a sensor, transmitting measured data to a data collector through a data transmission line, displaying the measured data at a computer terminal after data conversion of the data collector, and closing the diaphragm air pump and the electromagnetic valve of the air filtering mechanism corresponding to the monitoring point; the step is circulated, and all the remote environment quality monitoring points needing to be monitored are continuously monitored on line; if the sensor is found to be inaccurate in measurement and needs to be calibrated in the monitoring process, the step 2 is circulated to finish the online calibration of the sensor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109506A (en) * | 2021-02-23 | 2021-07-13 | 农业农村部环境保护科研监测所 | Multi-point position acquisition monitoring system for multiple gas pollutants |
| CN115290833A (en) * | 2022-10-09 | 2022-11-04 | 农业农村部环境保护科研监测所 | Method for calculating ammonia emission flux of livestock and poultry house |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109506A (en) * | 2021-02-23 | 2021-07-13 | 农业农村部环境保护科研监测所 | Multi-point position acquisition monitoring system for multiple gas pollutants |
| CN115290833A (en) * | 2022-10-09 | 2022-11-04 | 农业农村部环境保护科研监测所 | Method for calculating ammonia emission flux of livestock and poultry house |
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