CN119574405A - Device and method for real-time measurement of permeability of compost covering film - Google Patents
Device and method for real-time measurement of permeability of compost covering film Download PDFInfo
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- CN119574405A CN119574405A CN202510121537.1A CN202510121537A CN119574405A CN 119574405 A CN119574405 A CN 119574405A CN 202510121537 A CN202510121537 A CN 202510121537A CN 119574405 A CN119574405 A CN 119574405A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to the technical field of film permeability test equipment, and provides a device and a method for real-time determination of permeability of a compost covering film, wherein the device for real-time determination of permeability of the compost covering film comprises a first detection box and a second detection box, the first detection box is provided with a first inner cavity and a first opening, a first sensor component is arranged in the first inner cavity, an air inlet communicated with the first inner cavity is arranged on the first detection box, the second detection box is provided with a second inner cavity and a second opening, a second sensor component is arranged in the second inner cavity, an air outlet communicated with the second inner cavity is formed in the second detection box, the first opening and the second opening are oppositely arranged, and the first detection box and the second detection box are attached to each other, so that a film to be detected can be clamped between the first detection box and the second detection box. The device for real-time determination of the permeability of the compost covering film has the advantages of portability, convenient operation, intelligent sensing, high use flexibility and the like.
Description
Technical Field
The invention relates to the technical field of membrane permeability test equipment, in particular to a device and a method for real-time determination of permeability of a compost covering membrane.
Background
In the composting process, the film coverage plays a vital role in improving the nutrient content of the fertilizer, improving the composting efficiency and reducing the environmental pollution. The gas permeability is an important property for guaranteeing the resistance and control efficiency, the environmental pollution control and the pressure regulation and control in the cavity of the membrane for generating gas in the composting process. At present, the gas permeability of the membrane is mainly tested in an off-line manner according to the national standard GB/T40260-2021 method for testing the gas permeability of a polymer membrane material or GB/T1038-2000 method for testing the gas permeability of a plastic film and a sheet, and the capability of real-time monitoring and evaluation is lacking. Meanwhile, the existing film permeability detection equipment is complex in structure, large in size and heavy in weight, so that portability is poor, operation is difficult, and a composting factory practitioner cannot evaluate the quality of purchased film materials and cannot monitor the film composting performance, so that the regulation and control of a composting process are not facilitated.
Disclosure of Invention
The invention provides a device for real-time determination of permeability of a composting covering membrane, which is used for solving the problem of real-time monitoring and evaluation of membrane layer gas permeability in the composting process which cannot be realized in the prior art. Meanwhile, aiming at the defect that the existing measuring device is bad in portability and unfavorable for on-site arrangement, the measuring device with high portability and high intelligence is provided, so that the permeability of the film layer can be tested on site.
The invention provides a device for real-time determination of permeability of a compost cover film, comprising:
The first detection box is provided with a first inner cavity and a first opening, a first sensor component is arranged in the first inner cavity, and an air inlet communicated with the first inner cavity is formed in the first detection box;
the second detection box is provided with a second inner cavity and a second opening, a second sensor component is arranged in the second inner cavity, and an air outlet communicated with the second inner cavity is formed in the second detection box;
The first opening and the second opening are oppositely arranged, and the first detection box and the second detection box are attached, so that the film to be detected can be clamped between the first detection box and the second detection box.
In some embodiments, a first air pump is disposed in the first interior cavity, the first air pump being coupled to the air inlet.
In some embodiments, the first detection box has a first end surface, the first opening is arranged on the first end surface, and an annular first magnet is arranged on the first end surface;
The second detection box is provided with a second end face, the second opening is formed in the second end face, and an annular second magnet is arranged on the second end face;
The first magnet and the second magnet can be attached.
In some embodiments, a first sealing ring is arranged on the first end surface, the first sealing ring is arranged on the outer periphery side of the first magnet, and the surface of the first sealing ring is flush with the surface of the first magnet;
The second end face is provided with a second sealing ring, the second sealing ring is arranged on the outer peripheral side of the second magnet, and the surface of the second sealing ring is flush with the surface of the second magnet.
In some embodiments, the first sensor assembly includes a first housing having a first concentration sensor, a first humidity sensor, and a first pressure sensor disposed therein, the first concentration sensor being a plurality of to test the concentration of a plurality of gases;
the second sensor assembly comprises a second shell, and a second concentration sensor, a second humidity sensor and a second pressure sensor are arranged in the second shell, wherein the second concentration sensor is multiple so as to test the concentration of multiple gases.
In some embodiments, the first detection box comprises a first data acquisition module, and the first sensor assembly and the first air pump are both connected with the first data acquisition module;
the second detection box comprises a second data acquisition module, and the second sensor assembly is electrically connected with the second data acquisition module.
In some embodiments, the first data acquisition module includes a first display screen, the first display screen being disposed on an outer surface of the first detection cartridge;
The second data acquisition module comprises a second display screen, and the second display screen is arranged on the outer surface of the second detection box.
In some embodiments, the means for real-time determination of compost coverlay permeability includes a cloud processor, with which the first data acquisition module and the second data acquisition module are both electrically connected.
The invention provides a method for real-time determination of permeability of a compost cover film, comprising the following steps:
Arranging the first opening of the first detection box and the second opening of the second detection box in opposite directions;
sandwiching a film to be tested between the first opening and the second opening;
Attaching the first magnet to the second magnet;
starting a first air pump to charge working gas into the first inner cavity;
utilizing the gas flow data Q recorded by the cloud end when the first gas pump operates;
Recording a difference delta P of data acquired by the first pressure sensor and the second pressure sensor;
and the cloud processor calculates a result according to the numerical value.
In some embodiments, the cloud processor includes, according to the numerical calculation result:
The permeability of the film to be measured is calculated according to the formula Permeability =q×l/(a×Δp), wherein,
Permeability is the average gas permeability in units ofOr (b);
L represents the thickness of the film to be measured, and the unit is;
A represents the area of the film to be measured, and the unit is;
Q is given in unit ofOr (b);
ΔP in units ofOr (b)。
According to the device for real-time determination of the permeability of the compost covering film, provided by the embodiment of the invention, the first detection box and the second detection box are arranged, and the first sensor component and the second sensor component are arranged in the box body, so that the performance of the film to be detected can be detected conveniently, the device for real-time determination of the permeability of the compost covering film is small in size, light in weight and real-time in numerical value, and a user can select different materials for customization according to requirements and can easily bring the device into different test environments for real-time measurement. And when in use, the film to be detected is only clamped between the first detection box and the second detection box, so that the operation is simple, the use is convenient, and the flexibility is high. In addition, the device for real-time determination of the permeability of the compost covering film provided by the embodiment of the invention can monitor the permeability of the film and other key parameters in real time, is convenient to rapidly deploy on site, can immediately measure the film performance on the surface of the compost, enables operators to adjust ventilation conditions in time, optimizes the composting process, and therefore improves the uniformity and efficiency of the compost and reduces energy consumption and cost.
The method for measuring the permeability of the compost covering membrane in real time has the advantages of convenience in operation, high use flexibility and the like.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the working state of the device for real-time determination of the permeability of a compost cover film.
FIG. 2 is a schematic diagram of the structure of the device for real-time determination of the permeability of a compost cover film.
Fig. 3 is a schematic structural diagram of a first detection box of the device for real-time determination of the permeability of the compost covering film.
Fig. 4 is a schematic structural diagram of a second detection box of the device for real-time determination of the permeability of the compost covering film.
Reference numerals:
1. First detection box 10, first inner cavity 11, first opening 12, first sensor assembly 13, first air pump 14, first end face 15, first magnet 16, first sealing ring 17, first shell 18, first display screen 19, air inlet 2, second detection box 20, second inner cavity 21, second opening 22, second sensor assembly 23, second end face 24, second magnet 25, second sealing ring 26, second shell 27, second display screen 28, air outlet;
3. And (5) a film to be tested.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 4, an embodiment of the present invention discloses an apparatus for real-time measurement of the permeability of a compost cover film, comprising a first cartridge 1 and a second cartridge 2.
The first detection box 1 is provided with a first inner cavity 10 and a first opening 11, a first sensor assembly 12 is arranged in the first inner cavity 10, and an air inlet 19 communicated with the first inner cavity 10 is arranged on the first detection box 1.
The second detection box 2 is provided with a second inner cavity 20 and a second opening 21, a second sensor assembly 22 is arranged in the second inner cavity 20, and an air outlet 28 communicated with the second inner cavity 20 is arranged on the second detection box 2.
The first opening 11 and the second opening 21 are arranged opposite to each other, and the first detection box 1 and the second detection box 2 are attached to each other, so that the film 3 to be detected can be sandwiched between the first detection box 1 and the second detection box 2.
For convenience of description, the up-down direction is shown in fig. 1.
The lower extreme of first detection box 1 is sealed, and the upper end of first detection box 1 is provided with first opening 11, and the upper end of second detection box 2 is sealed, and the lower extreme of second detection box 2 is provided with second opening 21. In other words, the cartridge body of the first cartridge 1 and the cartridge body of the second cartridge 2 are substantially identical in structure and size, but are arranged in opposite directions. For example, the first cartridge 1 and the second cartridge 2 are each square, rectangular parallelepiped, or cylindrical.
The first sensor assembly 12 and the second sensor assembly 22 include various types of sensors to detect the concentration, pressure, humidity, or the like of the working gas.
When the device for measuring the permeability of the compost covering film in real time works, the first opening 11 of the first detection box 1 faces upwards, then the film 3 to be measured is paved on the first detection box 1 to block the first opening 11, then the second opening 21 of the second detection box 2 faces downwards and is arranged opposite to the first opening 11, and then the film 3 to be measured can be clamped between the first detection box 1 and the second detection box 2 after the first detection box 1 and the second detection box 2 are tightly adhered. Finally, the working gas is introduced into the first detection box 1 through the gas inlet 19, a part of the working gas in the first inner cavity 10 can permeate into the second inner cavity 20 through the layer 3 of the film to be detected, and then the gas flows out from the gas outlet 28.
The first sensor assembly 12 is utilized to acquire data such as concentration, pressure, humidity, etc. of the working gas in the first lumen 10 in real time. The second sensor assembly 22 is utilized to acquire the concentration, pressure, humidity and other data of the working gas permeated into the second inner cavity 20 in real time, so that parameters such as the permeability of the membrane 3 to be measured or the rejection rate of the gas membrane are automatically calculated. The first sensor assembly 12 and the second sensor assembly 22 can be customized as desired to test different working gases.
In the related art, the membrane permeability detection device has a complex structure, is large in size and heavy in weight, so that the portability of the membrane permeability detection device is poor, and the membrane permeability detection device is unfavorable for rapid deployment in different test environments. Moreover, these devices often require specialized personnel to operate, which greatly limits their flexibility.
The device for measuring the permeability of the compost covering film in real time is provided with the first detection box 1 and the second detection box 2, and the first sensor component 12 and the second sensor component 22 are arranged in the box body, so that the performance of the film 3 to be measured can be conveniently detected, the device for measuring the permeability of the compost covering film in real time is small in size and light in weight, a user can select different materials to customize according to requirements, and the device can be easily brought into different test environments to carry out real-time measurement. And when in use, the film 3 to be detected is only required to be clamped between the first detection box 1 and the second detection box 2, so that the operation is simple, the use is convenient, and the flexibility is high.
In addition, by using the device for real-time determination of the permeability of the compost covering film provided by the embodiment of the invention, the permeability of the film and other key parameters can be monitored in real time, the device is convenient to rapidly deploy on site, and the film performance on the surface of the compost can be measured in real time, so that an operator can adjust ventilation conditions in time, the composting process is optimized, the uniformity and efficiency of the compost are improved, and the energy consumption and cost are reduced.
Therefore, the device for real-time determination of the permeability of the compost covering film has the advantages of portability, convenient operation, high use flexibility and the like.
In some embodiments, a first air pump 13 is disposed in the first interior chamber 10, the first air pump 13 being connected to the air inlet 19.
The air inlet 19 is provided on the bottom surface or side surface of the first cartridge 1, and the air outlet 28 is provided on the top surface or side surface of the second cartridge 2.
The first air pump 13 is utilized to inflate the first inner cavity 10 so as to realize accurate control of the gas environment in the first detection box 1 and ensure the stability of the gas flow and the pressure in the testing process.
For example, the device for measuring the permeability of the compost covering film in real time comprises a controller, the working state of the first air pump 13 can be controlled by the controller, and a flow detector is arranged in the first air pump 13, so that the flow of air can be monitored and regulated in real time, and different testing requirements can be met.
In some embodiments, the first detection cartridge 1 has a first end surface 14, the first opening 11 is provided on the first end surface 14, and the first end surface 14 is provided with a ring-shaped first magnet 15.
The second detection cartridge 2 has a second end surface 23, the second opening 21 is provided on the second end surface 23, and the second end surface 23 is provided with a ring-shaped second magnet 24.
The first magnet 15 and the second magnet 24 can be bonded.
For example, as shown in fig. 3 and 4, the end surface of the first detection cartridge 1 where the first opening 11 is provided is a first end surface 14, and a first magnet 15 having a ring shape is provided on the first end surface 14 along the circumferential direction of the first opening 11.
The second cartridge 2 has a second end surface 23 on which the second opening 21 is provided, and a second magnet 24 having a ring shape is provided on the second end surface 23 along the circumferential direction of the second opening 21.
When the first detection box 1 and the second detection box 2 are attached, the first magnet 15 and the second magnet 24 can be tightly adsorbed together to form a uniform and firm sealing interface, so that the sealing performance of the film 3 to be detected and the first detection box 1 and the second detection box 2 is ensured, and the film 3 to be detected can be ensured not to be displaced or loosened in the detection process.
The device for real-time determination of the permeability of the compost covering film, disclosed by the embodiment of the invention, has the advantages that the installation and replacement processes of the film 3 to be detected are simplified, the convenience and efficiency of operation are improved, and the sealing performance of the film 3 to be detected and the first detection box 1 and the second detection box 2 can be ensured. In addition, the design of the annular magnet enables magnetic force distribution to be more uniform, damage to membrane materials possibly caused by a traditional mechanical fixing mode is avoided, meanwhile, the overall stability and durability of the device for real-time determination of the permeability of the compost covering membrane are enhanced, and the device is particularly suitable for rapid on-site deployment.
In some embodiments, the first end surface 14 is provided with a first sealing ring 16, the first sealing ring 16 is disposed on the outer peripheral side of the first magnet 15, and the surface of the first sealing ring 16 is flush with the surface of the first magnet 15.
The second end surface 23 is provided with a second sealing ring 25, the second sealing ring 25 is arranged on the outer periphery side of the second magnet 24, and the surface of the second sealing ring 25 is flush with the surface of the second magnet 24.
For example, as shown in fig. 3 and 4, the first seal ring 16 is located on the outer peripheral side of the first magnet 15, and its surface is flush with the surface of the first magnet 15, ensuring seamless engagement therebetween and uniform stress. Similarly, the second end surface 23 is provided with a second seal ring 25, and the second seal ring 25 is located on the outer peripheral side of the second magnet 24, and the surface of the second seal ring is flush with the surface of the second magnet 24, so that a flat and tight contact surface is formed.
According to the device for real-time determination of the permeability of the compost covering film, disclosed by the embodiment of the invention, the sealing performance of the first detection box 1 and the second detection box 2 during adhesion is enhanced by utilizing the first sealing ring 16 and the second sealing ring 25, so that the leakage of working gas is effectively prevented, and the stability of the film 3 layer to be detected in the detection process and the tightness of the test environment are ensured.
In addition, the surface of the first sealing ring 16 is flush with the surface of the first magnet 15, and the surface of the second sealing ring 25 is flush with the surface of the second magnet 24, so that the first detection box 1 and the second detection box 2 can not influence the bonding effect due to the protrusion or the depression during bonding, and the test error caused by poor sealing is avoided.
In some embodiments, the first sensor assembly 12 includes a first housing 17, a first concentration sensor, a first humidity sensor, and a first pressure sensor disposed within the first housing 17, the first concentration sensor being a plurality of to test the concentration of a plurality of gases.
The second sensor assembly 22 includes a second housing 26, and a second concentration sensor, a second humidity sensor, and a second pressure sensor are provided in the second housing 26, the second concentration sensor being plural so as to test the concentration of plural gases.
For example, as shown in fig. 3 and 4, the first housing 17 integrates a first humidity sensor, a first pressure sensor, and a plurality of first concentration sensors thereon, thereby allowing for overall monitoring of environmental parameters in the first lumen 10.
The second housing 26 integrates a second humidity sensor, a second pressure sensor, and a plurality of second concentration sensors, thereby allowing for overall monitoring of environmental parameters within the second interior cavity 20.
Alternatively, each first concentration sensor is used to detect the concentration of one gas, and a plurality of first concentration sensors can detect the concentrations of a plurality of gases simultaneously, e.g.、Ammonia, hydrogen sulfide, carbon dioxide, sulfur dioxide, etc., ensuring accurate monitoring of the different gas components. Also, the plurality of second concentration sensors can detect the concentrations of a plurality of gases at the same time.
According to the device for real-time determination of the permeability of the compost covering film, through the design of simultaneous monitoring on two sides, the permeability, the moisture permeability and other performances of the film can be evaluated in real time, so that further measures can be taken in time, the composting condition can be optimized, and the composting efficiency and the product quality can be improved.
In some embodiments, the first detection cartridge 1 includes a first data acquisition module, and the first sensor assembly 12 and the first air pump 13 are both connected to the first data acquisition module.
The second cartridge 2 includes a second data acquisition module to which the second sensor assembly 22 is electrically connected.
For example, the first humidity sensor, the first pressure sensor, and the plurality of first concentration sensors in the first sensor assembly 12 transmit detected data (e.g., gas concentration, humidity, and pressure) to the first data acquisition module, and the first gas pump 13 transmits gas flow parameters acquired thereby to the first data acquisition module.
Likewise, the second humidity sensor, the second pressure sensor, and the plurality of second concentration sensors in the second sensor assembly 22 transmit the sensed data in the second lumen 20 to the second data acquisition module.
The integrated design not only improves the efficiency and accuracy of data acquisition, but also enables the first detection box 1 and the second detection box 2 to automatically adapt to different testing requirements and provide accurate real-time feedback.
Optionally, the first data acquisition module and the second data acquisition module can be further connected with the cloud processor in a wireless or wired mode, so that remote transmission and centralized management of data are realized. The user can access and analyze this data anywhere and at any time to further optimize ventilation conditions and other operating parameters during composting. The design not only simplifies the field operation, but also enhances the flexibility and expansibility of the system, and is particularly suitable for quick on-site deployment and real-time monitoring of the performance parameters of the surface film layer of the compost, thereby optimizing ventilation conditions in time, improving the uniformity and efficiency of the compost, and reducing energy consumption and cost.
In some embodiments, the first data acquisition module comprises a first display 18, the first display 18 being provided on an outer surface of the first cartridge 1.
The second data acquisition module comprises a second display screen 27, and the second display screen 27 is arranged on the outer surface of the second detection box 2.
For example, as shown in FIG. 1, the first display 18 and the second display 27 are utilized to facilitate viewing of key parameters such as gas concentration, humidity, and pressure in the first lumen 10 or the second lumen 20, thereby facilitating recording and collection of data.
In some embodiments, the device for real-time determination of the permeability of the compost coverlay film comprises a cloud processor, and the first data acquisition module and the second data acquisition module are both electrically connected with the cloud processor.
For example, the first data acquisition module is responsible for collecting environmental parameters inside the first detection box 1, such as gas concentration, humidity and pressure, and transmitting these data to the cloud processor in real time. Likewise, the second data acquisition module is also responsible for collecting the corresponding parameters inside the second detection box 2 and transmitting them to the same cloud processor.
The device for real-time determination of the permeability of the compost covering film, provided by the embodiment of the invention, can ensure centralized management and sharing of data by a user through internet access and analysis at any place and any time, thereby providing an intelligent, automatic and reliable detection solution for the user and promoting the development of the composting technology to a higher automation and intelligent level.
The embodiment of the invention discloses a method for real-time determination of permeability of a compost cover film, which comprises the following steps:
the first opening 11 of the first cartridge 1 is arranged opposite the second opening 21 of the second cartridge 2.
The film 3 to be measured is sandwiched between the first opening 11 and the second opening 21.
The first magnet 15 and the second magnet 24 are bonded.
The first air pump 13 is started to charge the first inner chamber 10 with the working gas.
The gas flow data Q when operating with the first gas pump 13 is recorded.
The difference deltap between the first pressure sensor and the second pressure sensor is recorded.
And the cloud processor calculates a result according to the numerical value.
The method for measuring the permeability of the compost covering film in real time comprises the following specific operation steps:
First, the first opening 11 and the second opening 21 of the first detection box 1 and the second detection box 2 are arranged face to face, then, the film 3 to be detected is placed between the first opening 11 and the second opening 21, and an even and firm sealing interface is formed through the mutual adhesion of the annular first magnet 15 on the first end face 14 and the annular second magnet 24 on the second end face 23, so that the film 3 to be detected is ensured not to displace or loosen in the detection process. Next, the first air pump 13 is started, and the first inner chamber 10 of the first detection cartridge 1 is filled with the working air. As the gas fills, the first gas pump 13 automatically collects and records flow data Q, which will be used for subsequent calculations and analysis. Meanwhile, the difference delta P and the flow data Q of the first pressure sensor and the second pressure sensor are calculated according to the data on the cloud processor, or the first pressure sensor and the second pressure sensor respectively monitor the pressure change at two sides of the membrane, and an operator calculates the difference delta P between the first pressure sensor and the second pressure sensor according to the data on the first display screen 18 and the second display screen 27.
In some embodiments, the cloud processor includes, according to the numerical calculation result:
The permeability of the film 3 to be measured is calculated according to the formula Permeability =q×l/(a×Δp), wherein,
Permeability is the average gas permeability in units ofOr (b);
L represents the thickness of the film 3 to be measured, and the unit is;
A represents the area of the film 3 to be measured in units of;
Q represents the flow rate of the gas through the membrane 3 to be measured, i.e. the flow rate of the gas filled into the first inner cavity 10 when the first gas pump 13 is operated, in units ofOr (b)。
ΔP is the pressure difference of the gas flowing through the membrane 3 to be measured, and is expressed in units ofOr (b)。
For example, the cloud processor sets a corresponding calculation degree according to the above formula, an operator inputs L, A values before testing, and in the testing process, the cloud processor can obtain the Q and Δp values, so as to calculate a corresponding result.
The thickness L of the film 3 to be measured isThe area A of the film 3 to be measured sandwiched between the first cartridge 1 and the second cartridge 2 isThe air flow Q of the first air pump 13 isWhen the pressure value detected by the first pressure sensor isThe pressure value detected by the second pressure sensor isΔP isIs carried into a formula to calculate Permeability as。
In other embodiments, the gas membrane rejection may be calculated according to the following formula:
Gas membrane rejection (%) = [ (gas concentration entering the membrane module-gas concentration exiting the membrane module)/gas concentration entering the membrane module ] ×100%;
For example, the first concentration sensor and the second concentration sensor each include a methane concentration sensor, an ammonia concentration sensor, and a hydrogen sulfide concentration sensor.
The first concentration sensor detects the concentrations of methane, ammonia and hydrogen sulfide in the first inner cavity 10 to be 1 mg/L, 50 mg/L and 5 mg/L respectively, while the second concentration sensor detects the concentrations of methane, ammonia and hydrogen sulfide in the second inner cavity 20 to be 0.7 mg/L, 25 mg/L and 2.5 mg/L respectively, and the methane rejection rate is 30%, the ammonia rejection rate is 50% and the hydrogen sulfide rejection rate is 50% according to a gas membrane rejection rate calculation formula.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (10)
1. An apparatus for real-time determination of the permeability of a compost cover film, comprising:
The first detection box is provided with a first inner cavity and a first opening, a first sensor component is arranged in the first inner cavity, and an air inlet communicated with the first inner cavity is formed in the first detection box;
the second detection box is provided with a second inner cavity and a second opening, a second sensor component is arranged in the second inner cavity, and an air outlet communicated with the second inner cavity is formed in the second detection box;
The first opening and the second opening are oppositely arranged, and the first detection box and the second detection box are attached, so that the film to be detected can be clamped between the first detection box and the second detection box.
2. The device for real-time determination of the permeability of a compost cover film according to claim 1, wherein a first air pump is provided in said first interior chamber, said first air pump being connected to said air inlet.
3. The device for real-time determination of the permeability of a compost cover film according to claim 1, wherein said first cartridge has a first end face, said first opening being provided on said first end face, said first end face being provided with a first magnet of annular shape;
The second detection box is provided with a second end face, the second opening is formed in the second end face, and an annular second magnet is arranged on the second end face;
The first magnet and the second magnet can be attached.
4. The device for real-time determination of permeability of a compost cover film according to claim 3, wherein a first sealing ring is provided on the first end surface, the first sealing ring is provided on the outer peripheral side of the first magnet, and the surface of the first sealing ring is flush with the surface of the first magnet;
The second end face is provided with a second sealing ring, the second sealing ring is arranged on the outer peripheral side of the second magnet, and the surface of the second sealing ring is flush with the surface of the second magnet.
5. The apparatus for real time determination of the permeability of a compost cover film according to any one of claims 1-4, wherein said first sensor assembly comprises a first housing having a first concentration sensor, a first humidity sensor and a first pressure sensor disposed therein, said first concentration sensor being a plurality of for testing the concentration of a plurality of gases;
the second sensor assembly comprises a second shell, and a second concentration sensor, a second humidity sensor and a second pressure sensor are arranged in the second shell, wherein the second concentration sensor is multiple so as to test the concentration of multiple gases.
6. The device for real-time determination of the permeability of a compost cover film according to claim 2, wherein said first detection cartridge comprises a first data acquisition module, said first sensor assembly, said first air pump being connected to said first data acquisition module;
the second detection box comprises a second data acquisition module, and the second sensor assembly is electrically connected with the second data acquisition module.
7. The device for real-time determination of the permeability of a compost cover film according to claim 6, wherein said first data acquisition module comprises a first display screen disposed on an outer surface of said first detection box, and said second data acquisition module comprises a second display screen disposed on an outer surface of said second detection box.
8. The apparatus for real-time determination of the permeability of a compost coverlay according to claim 6 or 7, wherein the apparatus for real-time determination of the permeability of a compost coverlay comprises a cloud processor, and wherein the first data acquisition module and the second data acquisition module are each electrically connected to the cloud processor.
9. A method for real-time determination of the permeability of a compost cover film, employing the apparatus for real-time determination of the permeability of a compost cover film as claimed in any one of claims 1 to 8, comprising:
Arranging the first opening of the first detection box and the second opening of the second detection box in opposite directions;
sandwiching a film to be tested between the first opening and the second opening;
Attaching the first magnet to the second magnet;
starting a first air pump to charge working gas into the first inner cavity;
recording gas flow data Q when the first gas pump is operated;
Recording a difference delta P of data acquired by the first pressure sensor and the second pressure sensor;
and the cloud processor calculates a result according to the numerical value.
10. The method for real-time determination of permeability of a compost cover film according to claim 9, wherein said cloud processor comprises, based on the numerical calculation:
The permeability of the film to be measured is calculated according to the formula Permeability =q×l/(a×Δp), wherein,
Permeability is the average gas permeability in units ofOr (b);
L represents the thickness of the film to be measured, and the unit is;
A represents the area of the film to be measured, and the unit is;
Q is given in unit ofOr (b);
ΔP in units ofOr (b)。
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