A material pollutant release detection system

Abstract

The present invention provides a material pollutant release detection system, comprising: an environmental parameter sensor for detecting environmental parameters; a pollutant release monitoring device, comprising: an air pump connected to an air treatment device, the air treatment device connected to an air delivery main pipeline, the air delivery main pipeline connected to a first branch pipeline and a second branch pipeline, the first branch pipeline being connected to a first temperature-controlled water tank, the second branch pipeline being connected to a second temperature-controlled water tank, the first branch pipeline being connected to a material inspection cabin, the second branch pipeline being connected to an empty cabin, both the material inspection cabin and the empty cabin being connected to a gas collection and detection device; the gas collection and detection device being used to detect pollutant releases from the gas in the material inspection cabin and the gas in the empty cabin; a controller regulating the temperatures of the first temperature-controlled water tank, the second temperature-controlled water tank, and the temperature control device, and / or regulating the air intake of the air pump. This system lowers the threshold for pollutant release detection and improves the accuracy of pollutant release detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of polluted gas detection, and in particular relates to a material pollutant release detection system. Background Art

[0002] With technological advancements, material pollutant release detection methods have undergone significant development. To accurately measure material pollutant releases, it is generally necessary to design a low-background environmental chamber's interior structure and perform performance testing on the inert materials within the chamber. Only after verifying the rationality of the selected interior chamber materials can the chamber structure be used to detect material pollutant releases. This method places high demands on the chamber materials, and even if the materials meet the standards, a certain background will still exist, resulting in insufficient accuracy in pollutant release measurements. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a material pollutant release detection system to meet the needs of lowering the material pollutant release detection threshold and improving the material pollutant release detection accuracy.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a material pollutant release detection system, comprising: an environmental parameter sensor, which is arranged in an environment to be detected and is used to detect the environmental parameters of the environment to be detected; a pollutant release monitoring device, which is connected to the environmental parameter sensor and comprises: a controller, an air pump, an air treatment device, a main delivery pipeline, a first branch pipeline, a second branch pipeline, a first temperature-controlled water tank, a second temperature-controlled water tank, a material detection cabin, an empty cabin and a gas collection and detection device; wherein the air pump is connected to the air treatment device, the air treatment device is connected to the main delivery pipeline, the end of the main delivery pipeline is divided into a first branch pipeline and a second branch pipeline, the first branch pipeline is connected to the air treatment device, the air treatment device is connected to the main delivery pipeline, the end of the main delivery pipeline is divided into a first branch pipeline and a second branch pipeline, the first branch pipeline is connected to the air treatment device, the air treatment device is connected to the main delivery pipeline, the end of the first branch pipeline is connected to the first branch pipeline, ... The side of the second branch pipe is connected to the first temperature-controlled water tank, the side of the second branch pipe is connected to the second temperature-controlled water tank, the end of the first branch pipe is connected to the material inspection cabin, and the end of the second branch pipe is connected to the empty cabin. The material inspection cabin and the empty cabin are respectively provided with temperature control devices, and the material inspection cabin and the empty cabin are both connected to a gas collection and detection device; the gas collection and detection device is used to detect the pollutant release amount of the gas in the material inspection cabin and the gas in the empty cabin; the controller adjusts the temperature of the first temperature-controlled water tank, the second temperature-controlled water tank and the temperature control device according to the environmental parameters of the environment to be detected, and / or the controller adjusts the air intake of the air pump according to the environmental parameters of the environment to be detected.

[0006] Optionally, the environmental parameter sensor includes: an air flow rate detector for detecting the air flow rate of the environment to be tested; the air flow rate detector is communicatively connected to the pollutant release monitoring equipment, and when the controller receives the air flow rate change value, the air pump pressurization signal is determined according to the air flow rate change value, and when the air pump receives the pressurization signal of the controller, it starts to pump the target amount of air into the air treatment device; the material detection cabin is provided with a plurality of openable and closable air outlets, and the plurality of openable and closable air outlets are provided below the air inlet of the material detection cabin; the empty cabin is provided with a plurality of openable and closable air outlets, and the plurality of openable and closable air outlets are provided below the air inlet of the empty cabin.

[0007] Optionally, the environmental parameter sensor includes: a first temperature and humidity sensor for detecting the temperature and humidity information of the environment to be detected; the material detection cabin is provided with a second temperature and humidity sensor, and the empty cabin is provided with a third temperature and humidity sensor; the controller adjusts the temperature control device of the material detection cabin according to the first temperature and humidity sensor and the second temperature and humidity sensor, and adjusts the temperature control device of the empty cabin according to the first temperature and humidity sensor and the third temperature and humidity sensor.

[0008] Optionally, a first control valve is provided between the material detection cabin and the gas collection and detection device, and a second control valve is provided between the empty cabin and the gas collection and detection device. The first control valve and the second control valve receive instructions from the controller to open and close.

[0009] Optionally, the gas collection and detection device includes: a first gas storage cabin, which is connected to the material detection cabin or the empty cabin when the first control valve or the second control valve is opened, and is used to collect the material detection cabin gas or the empty cabin gas. The first gas storage cabin is also provided with a first check valve, which is connected to the air treatment device through a delivery pipe and is used to input clean air in one direction. An opening and closing valve is provided between the air treatment device and the delivery main pipe and is in a closed state; a second gas storage cabin is connected to the first gas storage cabin through a second check valve, and is used to store the detected pollutant release gas; a heating unit, which is built into the first gas storage cabin; a gas detection unit, which is built into the first gas storage cabin, and is used to detect the pollutant release amount of the material detection cabin gas or the empty cabin gas when the first control valve or the second control valve is open, and to detect the pollutant release amount remaining in the gas storage cabin when the first control valve and the second control valve are closed. The controller determines whether to open the first check valve, the second check valve and the heating unit according to the pollutant release amount remaining in the first gas storage cabin.

[0010] Optionally, the temperature control device includes: a heating device, a refrigeration device and a circulating fan; the material testing cabin includes an inner cabin and an outer cabin, the inner cabin is used to place the material to be tested and the second temperature and humidity sensor, the inner cabin is isolated from the outer cabin, the outer cabin is equipped with a refrigeration device, a heating device and a circulating fan, and the isolation material between the inner cabin and the outer cabin is a thermal conductive material; the empty cabin includes an inner cabin and an outer cabin, the inner cabin is used to place the third temperature and humidity sensor, the inner cabin is isolated from the outer cabin, the outer cabin is equipped with a refrigeration device, a heating device and a circulating fan, and the isolation material between the inner cabin and the outer cabin is a thermal conductive material.

[0011] Optionally, there is a third control valve between the first temperature-controlled water tank and the first branch pipe, and a fourth control valve between the second temperature-controlled water tank and the second branch pipe. The third control valve and the fourth control valve receive controller instructions to open and close.

[0012] Optionally, a material pollutant release detection system also includes: an in-cabin airflow simulation device, which is communicatively connected to the pollutant release monitoring device, and is used to construct a digital twin model based on the physical property parameters of the material detection cabin and / or the empty cabin, and input the air inlet airflow parameters into the digital twin model for a simulation experiment, and simulate different air flow rates according to the combinations of openable and closable air outlets in different positions and numbers, and select the openable and closable air outlet combination with the smallest difference between the simulated air flow rates and the air flow rate of the environment to be detected, and input the openable and closable air outlet combination into the controller of the pollutant release monitoring device to control the corresponding openable and closable air outlets.

[0013] Optionally, the bottom surface of the material testing chamber is provided with a bottom opening covering the material to be tested, and a connecting component is provided around the bottom opening.

[0014] An embodiment of the present invention provides a material pollutant release detection system. By setting up an empty cabin, and all the environments of the empty cabin and the material detection cabin are consistent, the pollutant release of the pollutant release monitoring equipment itself can be determined based on the pollutant release detected in the empty cabin. Compared with the existing technology, there are no longer too many requirements on the materials of the pollutant release detection equipment, which lowers the threshold for pollutant release detection and improves the accuracy of pollutant release detection.

[0015] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0017] Figure 1 This is a schematic diagram of the modular structure of a material pollutant release detection system in the present invention;

[0018] Figure 2 This is a schematic diagram of the modular structure of the gas collection and detection device in the pollutant release monitoring equipment of the present invention;

[0019] Figure 3 This is a schematic diagram of the modular structure of the material testing cabin in the present invention;

[0020] Figure 4 It is a schematic diagram of the structural modularization of the empty cabin in the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components; wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] The embodiment of the present invention provides a material pollutant release detection system, such as Figure 1 As shown, including:

[0025] An environmental parameter sensor 101 is provided in the environment to be detected and is used to detect environmental parameters of the environment to be detected;

[0026] The pollutant release monitoring device 102 is connected to the environmental parameter sensor and includes: a controller 1021, an air pump 1022, an air treatment device 1023, a main delivery pipe 1024, a first branch pipe 1025, a second branch pipe 1026, a first temperature-controlled water tank 1027, a second temperature-controlled water tank 1028, a material detection chamber 1029, an empty chamber 1030, and a gas collection and detection device 1031;

[0027] Among them, the air pump 1022 is connected to the air treatment device 1023, the air treatment device 1023 is connected to the main delivery pipe 1024, the end of the main delivery pipe 1024 is divided into a first branch pipe 1025 and a second branch pipe 1026, the first branch pipe 1025 is connected to the first temperature-controlled water tank 1027, the second branch pipe 1026 is connected to the second temperature-controlled water tank 1028, the end of the first branch pipe 1025 is connected to the material inspection cabin 1029, the end of the second branch pipe 1026 is connected to the empty cabin 1030, the material inspection cabin 1029 and the empty cabin 1030 are connected. 030 are respectively provided with temperature control devices, and the material detection cabin 1029 and the empty cabin 1030 are both connected to the gas collection and detection device 1031; the gas collection and detection device 1031 is used to detect the pollutant release amount of the gas in the material detection cabin 1029 and the gas in the empty cabin 1030; the controller 1021 adjusts the temperature of the first temperature-controlled water tank 1027, the second temperature-controlled water tank 1028 and the temperature control device according to the environmental parameters of the environment to be detected, and / or the controller 1021 adjusts the air intake of the air pump 1022 according to the environmental parameters of the environment to be detected.

[0028] Exemplarily, because the harmful gas release amount of pollutants is easily affected by the environment, such as temperature, humidity, wind speed, etc. In the present embodiment, the environmental parameter sensor 101 is arranged in the environment to be detected. The environment to be detected depends on the material to be detected. When the material to be detected is in a home environment, the environment to be detected can be a home environment. When the material to be detected is in an office environment, the environment to be detected can also be an office environment. The present embodiment does not define the environment to be detected, and those skilled in the art can set it as needed. One or more environmental parameter sensors 101 are arranged near the position of the material to be detected in the environment to be detected, for the environmental parameters of the material to be detected in the use environment.

[0029] The environmental parameters of the material to be tested in the use environment, obtained by the environmental parameter sensor 101, are input into the pollutant release monitoring device 102. The controller 1021 in the pollutant release monitoring device 102 adjusts the environmental parameters of the material to be tested in the material testing chamber based on the environmental parameters of the material to be tested in the use environment to maintain consistency. In this embodiment, the environmental parameters are temperature and humidity for distance description.

[0030] Specifically, air enters air processing unit 1023 through air pump 1022. Air processing unit 1023 is primarily used to absorb harmful substances and dehumidify the air to produce clean air. The clean air is then fed through main delivery pipe 1024 to first branch pipe 1025, which is connected to first temperature-controlled water tank 1027. First temperature-controlled water tank 1027 controls its temperature based on a received first temperature control instruction to produce air with a first target humidity. The first temperature control instruction is determined by the controller based on the temperature and humidity of the test material in the operating environment received by environmental parameter sensor 101. By increasing the temperature of the first temperature-controlled water tank, water vapor is generated, so that the humidity in material testing chamber 1029 reaches a level equivalent to that detected by environmental parameter sensor 101.

[0031] At the same time, clean air is delivered through main delivery pipe 1024 to second branch pipe 1026, which is connected to a second temperature-controlled water tank 1028. Second temperature-controlled water tank 1028 regulates its temperature based on a received second temperature control instruction, producing air with a second target humidity. The second temperature control instruction is determined by the controller based on the temperature and humidity of the test material in the operating environment, as received by environmental parameter sensor 101. By increasing the temperature of the second temperature-controlled water tank, water vapor is generated, ensuring that the humidity in the unoccupied compartment 1030 reaches a level equivalent to that detected by environmental parameter sensor 101.

[0032] Air with a first target humidity is input into the material testing chamber 1029, while air with a second target humidity is input into the empty chamber 1030. The temperature control device of the material testing chamber 1029 is adjusted based on the temperature measured by the environmental parameter sensor 101, so that the material to be tested in the material testing chamber 1029 releases pollutant gases under the same temperature and humidity conditions as the environment to be tested. Similarly, the temperature control device of the empty chamber 1030 is adjusted based on the temperature measured by the environmental parameter sensor 101, so that the empty chamber 1030 maintains the same temperature and humidity conditions as the environment to be tested. This allows the pollutant gases released by the entire pollutant release monitoring device 102 during the release detection process under the same temperature and humidity conditions as the environment to be tested.

[0033] The gas sampling and detection device 1031 samples gas from the material testing chamber 1029 and the empty chamber 1030, thereby analyzing and determining the amount of pollutants released by the material to be tested and the amount of pollutants released by the pollutant release monitoring device 102 during the release detection process. The actual amount of pollutants released by the material to be tested is determined by subtracting the pollutant release amount of the material to be tested from the amount of pollutants released by the pollutant release monitoring device 102 during the release detection process.

[0034] An embodiment of the present invention provides a material pollutant release detection system. By setting up an empty cabin, and all the environments of the empty cabin and the material detection cabin are consistent, the pollutant release of the pollutant release monitoring equipment itself can be determined based on the pollutant release detected in the empty cabin. Compared with the existing technology, there are no longer too many requirements on the materials of the pollutant release detection equipment, which lowers the threshold for pollutant release detection and improves the accuracy of pollutant release detection.

[0035] As an optional embodiment, a material pollutant release detection system, the environmental parameter sensor includes: an air flow rate detector, used to detect the air flow rate of the environment to be detected; the air flow rate detector is communicatively connected to the pollutant release monitoring equipment, when the controller receives the air flow rate change value, it determines the pressurization signal of the air pump according to the air flow rate change value, when the air pump receives the pressurization signal of the controller, it starts to pump the target amount of air into the air treatment device; the material detection cabin is provided with a plurality of openable and closable air outlets, and the plurality of openable and closable air outlets are provided below the air inlet of the material detection cabin; the empty cabin is provided with a plurality of openable and closable air outlets, and the plurality of openable and closable air outlets are provided below the air inlet of the empty cabin.

[0036] For example, the air flow rate detector can be a thermal probe or a vane anemometer. This embodiment does not limit the air flow rate detector and can be configured as needed. The air flow rate detector is communicatively connected to the pollutant release monitoring device. When the controller receives air flow rate changes, based on aerodynamic principles, the air flow rate within the flow channel has a certain functional relationship with the total flow pressure, total temperature, flow area, and velocity coefficient. The theoretical total pressure can be calculated using a formula. This is prior art and will not be further described. The air pump inputs the target gas volume into the air handling device to produce purified air. The air is then fed into the first and second branch pipes along the main delivery pipeline and ultimately enters the material inspection chamber and the vacant chamber. Furthermore, flow rate detectors can be installed in the material inspection chamber and the vacant chamber. Through a closed-loop control strategy, the controller adjusts the air pump's pressurization level based on real-time flow rate feedback measured by the flow rate detectors in the material inspection chamber and the vacant chamber, allowing for continuous adjustment and improving air flow rate accuracy. Specifically, if the actual flow rate is lower than the target flow rate, the pressurization level is increased; if the actual flow rate is higher than the target flow rate, the pressurization level is decreased.

[0037] Since the release of formaldehyde gas will be affected by the air circulation, that is, the higher the circulation environment, the higher the formaldehyde release rate, in order to improve the air circulation and better stimulate the release of pollutant gases, this embodiment provides multiple openable and closable air outlets in the material testing cabin and the empty cabin respectively. Since pure air is slightly lighter than air with formaldehyde, in order to better replace the air, this embodiment provides multiple openable and closable air outlets below the air inlet.

[0038] An embodiment of the present invention provides a material pollutant release detection system, which takes into account the influence of air flow rate on the material pollutant release rate. The air flow rate of the environment to be detected can be detected in real time through an air flow rate detector, and through communication connection with the pollutant release monitoring equipment, an immediate response to changes in air flow rate is achieved, creating a relatively restored environment to be detected, reducing the release deviation caused by the experimental environment, and facilitating the accurate measurement of the pollutant release rate of material pollutants in the environment to be detected.

[0039] As an optional embodiment, the environmental parameter sensor includes: a first temperature and humidity sensor for detecting the temperature and humidity information of the environment to be detected; the material detection cabin is provided with a second temperature and humidity sensor, and the empty cabin is provided with a third temperature and humidity sensor; the controller adjusts the temperature control device of the material detection cabin according to the first temperature and humidity sensor and the second temperature and humidity sensor, and adjusts the temperature control device of the empty cabin according to the first temperature and humidity sensor and the third temperature and humidity sensor.

[0040] Exemplarily, the controller adjusts the temperature control device of the material inspection cabin according to the first temperature and humidity sensor and the second temperature and humidity sensor by determining the difference between the temperature information obtained by the first temperature and humidity sensor and the temperature information obtained by the second temperature and humidity sensor, and adjusting the temperature control device of the material inspection cabin according to the difference until the temperature obtained by the second temperature and humidity sensor is the same as the temperature obtained by the first temperature and humidity sensor; the temperature of the empty cabin is controlled in the same way and will not be repeated here.

[0041] An embodiment of the present invention provides a material pollutant release detection system, which takes into account the influence of temperature and humidity on the material pollutant release. Through the temperature and humidity sensors, the temperature and humidity of the environment to be detected can be detected in real time, and through the communication connection with the pollutant release monitoring equipment, an immediate response to the temperature and humidity changes can be achieved, thereby creating a relatively restored environment to be detected, reducing the release deviation caused by the experimental environment, and facilitating the accurate measurement of the pollutant release of material pollutants in the environment to be detected.

[0042] As an optional embodiment, a first control valve is provided between the material testing chamber and the gas collection and detection device, and a second control valve is provided between the empty chamber and the gas collection and detection device. The first and second control valves are opened and closed in response to controller commands. Control valves are provided between the material testing chamber and the empty chamber, respectively, to collect gas from the material testing chamber and the empty chamber. When the material has been placed in the material testing chamber for a target period, such as 24 hours, the controller issues a control command. Because the amount of contaminated gas in the empty chamber is relatively low, the control command first opens the second control valve, connecting the empty chamber to the gas collection and detection device, collecting gas from the empty chamber for testing. Once testing is complete, within a preset interval, such as half an hour (this period facilitates gas exchange within the gas collection and detection device), the controller issues a control command to open the first control valve, connecting the material testing chamber to the gas collection and detection device, collecting gas from the material testing chamber for testing. This approach prevents mixing of gas from the material testing chamber and the empty chamber, which could lead to inaccurate measurements, thereby improving measurement accuracy.

[0043] As an optional implementation, Figure 2 As shown, the gas collection and detection device in the pollutant release monitoring device 102 includes: a first gas storage cabin 10311, when the first control valve or the second control valve is opened, the gas storage cabin is connected to the material detection cabin or the empty cabin, and is used to collect the gas in the material detection cabin or the empty cabin. The first gas storage cabin is also provided with a first check valve, which is connected to the air treatment device through a delivery pipeline and is used to input clean air in one direction, and an opening and closing valve is provided between the air treatment device and the delivery main pipeline, and is in a closed state; the second gas storage cabin 10312 is connected to the first gas storage cabin. The cabin is connected through a second check valve and is used to store the detected pollutant release gas; the heating unit 10313 is built into the first gas storage cabin; the gas detection unit 10314 is built into the first gas storage cabin and is used to detect the pollutant release amount of the material detection cabin gas or the empty cabin gas when the first control valve or the second control valve is open, and to detect the residual pollutant release amount of the gas storage cabin when the first control valve and the second control valve are closed. The controller determines whether to open the first check valve, the second check valve and the heating unit according to the residual pollutant release amount of the first gas storage cabin.

[0044] For example, the gas collection and detection device in this embodiment includes a second gas storage chamber, which can be made of an elastic material and is used to collect detected pollutant release gases for subsequent centralized processing. The first and second gas storage chambers are connected by a check valve to prevent gas entering the second gas storage chamber from flowing back into the first gas storage chamber.

[0045] The first gas storage compartment is connected to the material inspection compartment or the empty compartment via a first control valve and a second control valve, respectively. When the first control valve or the second control valve is open, the controller sends a control signal, causing the gas detection unit to repeatedly detect the amount of pollutant released from the material inspection compartment or the empty compartment. When the first control valve and the second control valve are closed, the controller sends a control signal to open the first check valve in the first gas storage compartment. At this time, the controller issues a control instruction to cause the air pump to input air to the air handling unit. The clean air processed by the air handling unit is then input into the first gas storage compartment to dilute the pollutant emissions in the first gas storage compartment. It should be noted that in this case, an on-off valve is provided between the air handling unit and the main delivery pipeline. At this time, to prevent clean air from entering the material inspection compartment or the empty compartment, the on-off valve is closed. At the same time, the second check valve is opened to discharge the pollutant emissions into the second gas storage compartment.

[0046] To accelerate air flow, this embodiment also incorporates a heating unit, allowing pollutant emissions to be rapidly discharged into the second gas storage chamber. This shortens the time difference between testing the material inspection chamber and the empty chamber, improving the accuracy of the final test results. Within a fixed period, the gas detection unit monitors the amount of pollutant released from the first gas storage chamber. When the release meets preset requirements, the first and second check valves and the heating unit are closed, allowing for the next test of pollutant release from either the material inspection chamber or the empty chamber.

[0047] An embodiment of the present invention provides a material pollutant release detection system, which further optimizes the gas collection and detection device, enabling the gas collection and detection device to quickly clear the residual gas from the previous round, shortening the time difference between the gas detection in the material detection chamber and the gas detection in the empty chamber, so that the pollutant release amount of the material detection chamber gas and the empty chamber gas can be measured within a relatively small time interval, thereby improving the accuracy of the material pollutant release detection.

[0048] As an optional embodiment, the temperature control device includes: a heating device, a cooling device and a circulating fan; Figure 3 As shown, the material testing cabin includes an inner cabin and an outer cabin. The inner cabin is used to place the material to be tested and the second temperature and humidity sensor. The inner cabin is isolated from the outer cabin. The outer cabin is equipped with a refrigeration device, a heating device and a circulating fan. The isolation material between the inner cabin and the outer cabin is a heat-conducting material; the empty cabin is as shown Figure 4 As shown, it includes an inner cabin and an outer cabin. The inner cabin is used to place the third temperature and humidity sensor. The inner cabin is isolated from the outer cabin. The outer cabin is equipped with a refrigeration device, a heating device and a circulating fan. The isolation material between the inner cabin and the outer cabin is a heat-conducting material.

[0049] For example, this embodiment employs an inner and outer compartment within the material testing chamber and the unoccupied chamber, respectively. The outer compartment is used for temperature regulation and houses a cooling device, a heating device, and a circulating fan. Because the inner compartment walls are constructed of thermally conductive material, the outer compartment's temperature control can create an effective temperature environment for the inner compartment. The outer and inner compartments are supported by brackets, leaving space between the six inner and outer compartment walls, allowing for a circulating air flow between the inner and outer compartments. A temperature and humidity sensor is installed within the inner compartment to detect the temperature. When the inner compartment temperature is lower than the ambient temperature to be tested, the heat dissipation of the heating device is increased. When it is higher than the ambient temperature to be tested, the heat dissipation of the heating device is reduced, and the cooling device is activated to rapidly reduce the temperature. Compared to directly placing heating equipment within the inner compartment, this embodiment utilizes the outer compartment to house the cooling device, heating device, and circulating fan, which are then transferred to the inner compartment via heat conduction. This results in more uniform heating, better simulating the ambient temperature, and effectively reproducing the pollutant release from the material in the testing environment, improving the accuracy of emission detection.

[0050] As an optional implementation, a third control valve is located between the first temperature-controlled water tank and the first branch pipe, and a fourth control valve is located between the second temperature-controlled water tank and the second branch pipe. The third and fourth control valves open and close in response to commands from the controller. By placing control valves between the temperature-controlled water tank and the branch pipes, the problem of inaccurate humidity control caused by water vapor leakage when the provided humidity reaches the humidity of the environment to be tested can be effectively avoided, thereby improving the accuracy of release detection.

[0051] As an optional embodiment, a material pollutant release detection system also includes: an in-cabin airflow simulation device, which is communicatively connected to the pollutant release monitoring device, and is used to construct a digital twin model based on the physical property parameters of the material detection cabin and / or the empty cabin, and input the air inlet airflow parameters into the digital twin model for a simulation experiment, and simulate different air flow rates according to the combination of openable and closable air outlets in different positions and numbers, and select the openable and closable air outlet combination with the smallest difference between the simulated air flow rates and the air flow rate of the environment to be detected, and input the openable and closable air outlet combination into the controller of the pollutant release monitoring device to control the corresponding openable and closable air outlets.

[0052] For example, through digital twin technology, physical models can be integrated to map physical products in virtual space, thereby reflecting the life cycle process of physical equipment. Collect the physical property parameters of the material detection cabin and / or empty cabin, such as size, material properties and opening position, and input these parameters into the digital twin model. Using computational fluid dynamics (CFD) technology, a numerical test model of the cabin can be established, and numerical simulation calculations of air flow organization can be performed. Simulate different air flow rates and flow directions in a virtual environment, and how they are affected by openable and closable air outlets. Through simulation experiments, the effects of different positions and numbers of openable and closable air outlet combinations on air flow rate can be simulated. Specifically, compare these simulation results and select the air outlet combination with the smallest difference in air flow rate with the environment to be tested. The selected optimal air outlet combination is input into the controller of the pollutant release monitoring equipment to control the corresponding openable and closable air outlets.

[0053] An embodiment of the present invention provides a material pollutant release detection system, which simulates the flow direction and flow rate of the airflow in the material detection cabin and / or empty cabin through a digital twin model, determines the optimal air outlet combination, and effectively restores the air flow rate in the environment to be detected in the material detection cabin and / or empty cabin, thereby improving the accuracy of detection.

[0054] As an optional embodiment, the bottom surface of the material testing chamber is provided with a bottom opening covering the material to be tested, and a connecting assembly is provided around the bottom opening. The connecting assembly can be made of a rubber material of the same size as the bottom opening of the material testing chamber and fixed around the bottom opening of the material testing chamber by bolts. The material to be tested is placed below the bottom opening of the material testing chamber, and the deadweight of the material testing chamber can be used to make the rubber material close to the material to be tested, forming a closed material testing chamber space. In this way, the pollutant release monitoring device can be placed directly above the material to be tested to avoid damaging the sample where the material to be tested is located.

[0055] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A material pollutant release detection system, characterized in that: include: An environmental parameter sensor is provided in the environment to be detected and is used to detect environmental parameters of the environment to be detected; The pollutant release monitoring device is connected to the environmental parameter sensor and includes: a controller, an air pump, an air treatment device, a main delivery pipeline, a first branch pipeline, a second branch pipeline, a first temperature-controlled water tank, a second temperature-controlled water tank, a material detection cabin, an empty cabin, and a gas collection and detection device; Among them, the air pump is connected to the air treatment device, the air treatment device is connected to the delivery main pipeline, the end of the delivery main pipeline is divided into a first branch pipeline and a second branch pipeline, the first branch pipeline is connected to the first temperature-controlled water tank on the side, the second branch pipeline is connected to the second temperature-controlled water tank on the side, the end of the first branch pipeline is connected to the material inspection cabin, and the end of the second branch pipeline is connected to the empty cabin, the material inspection cabin and the empty cabin are respectively provided with temperature control devices, and the material inspection cabin and the empty cabin are both connected to a gas collection and detection device; the gas collection and detection device is used to detect the amount of pollutant release from the gas in the material inspection cabin and the gas in the empty cabin; the controller adjusts the temperature of the first temperature-controlled water tank, the second temperature-controlled water tank and the temperature control device according to the environmental parameters of the environment to be detected, and / or the controller adjusts the air intake of the air pump according to the environmental parameters of the environment to be detected; The material testing cabin is provided with a plurality of openable and closable air outlets, and the plurality of openable and closable air outlets are arranged below the air inlet of the material testing cabin; The empty cabin is provided with a plurality of openable and closable air outlets, and the plurality of openable and closable air outlets are arranged below the air inlet of the empty cabin; A first control valve is provided between the material detection cabin and the gas collection and detection device, and a second control valve is provided between the empty cabin and the gas collection and detection device. The first control valve and the second control valve receive instructions from the controller to open and close; The control command first opens the second control valve to connect the empty cabin with the gas collection and detection device, and collects the gas in the empty cabin for detection; When the test is completed, the controller issues a control command at a preset interval to open the first control valve, thereby connecting the material test chamber to the gas collection and detection device, and collecting the gas in the material test chamber for testing; Flow rate detectors are installed in the material inspection cabin and the empty cabin. Through a closed-loop control strategy, a controller is used to adjust the pressurization degree of the air pump based on the flow rate feedback measured in real time by the flow rate detectors in the material inspection cabin and the empty cabin. The system also includes: The cabin airflow simulation device is communicatively connected to the pollutant release monitoring device and is used to construct a digital twin model based on the physical property parameters of the material testing cabin and / or the empty cabin, input the air inlet airflow parameters into the digital twin model for a simulation experiment, simulate different air flow rates according to the combination of openable and closeable air outlets in different positions and numbers, select the openable and closeable air outlet combination with the smallest difference between the simulated air flow rates and the air flow rate of the environment to be tested, and input the openable and closeable air outlet combination into the controller of the pollutant release monitoring device to control the corresponding openable and closeable air outlets; The gas collection and detection device includes: a first gas storage cabin. When the first control valve or the second control valve is opened, the gas storage cabin is connected to the material detection cabin or the empty cabin, and is used to collect the gas in the material detection cabin or the empty cabin. The first gas storage cabin is also provided with a first check valve, which is connected to the air treatment device through a delivery pipe and is used for one-way input of clean air. An opening and closing valve is provided between the air treatment device and the delivery main pipe, and is in a closed state.

2. A material pollutant release detection system according to claim 1, characterized in that: Environmental parameter sensors include: An air flow rate detector, used to detect the air flow rate of the environment to be detected; The air flow rate detector is communicatively connected to the pollutant release monitoring device. When the controller receives the air flow rate change value, it determines the pressurization signal of the air pump based on the air flow rate change value. When the air pump receives the pressurization signal from the controller, it starts to pump the target amount of air into the air treatment device.

3. A material pollutant release detection system according to claim 1 or 2, characterized in that: Environmental parameter sensors include: A first temperature and humidity sensor, used to detect temperature and humidity information of the environment to be detected; The material testing cabin is provided with a second temperature and humidity sensor, and the empty cabin is provided with a third temperature and humidity sensor; The controller adjusts the temperature control device of the material detection cabin according to the first temperature and humidity sensor and the second temperature and humidity sensor, and adjusts the temperature control device of the empty cabin according to the first temperature and humidity sensor and the third temperature and humidity sensor.

4. A material pollutant release detection system according to claim 1, characterized in that: The gas collection and detection device includes: a second gas storage chamber connected to the first gas storage chamber via a second check valve, and used for storing the detected pollutant release gas; a heating unit, built into the first gas storage cabin; The gas detection unit is built into the first gas storage cabin and is used to detect the amount of pollutants released from the material detection cabin gas or the empty cabin gas when the first control valve or the second control valve is open, and to detect the amount of pollutants released from the gas storage cabin when the first control valve and the second control valve are closed. The controller determines whether to open the first check valve, the second check valve and the heating unit based on the amount of pollutants released from the first gas storage cabin.

5. A material pollutant release detection system according to claim 3, characterized in that: The temperature control device includes: a heating device, a cooling device and a circulating fan; The material testing chamber includes an inner chamber and an outer chamber. The inner chamber is used to place the material to be tested and the second temperature and humidity sensor. The inner chamber is isolated from the outer chamber. The outer chamber is equipped with a refrigeration device, a heating device and a circulating fan. The insulation material between the inner and outer chambers is a thermally conductive material. The empty cabin includes an inner cabin and an outer cabin. The inner cabin is used to place the third temperature and humidity sensor. The inner cabin is isolated from the outer cabin. The outer cabin is equipped with a refrigeration device, a heating device and a circulating fan. The isolation material between the inner cabin and the outer cabin is a heat-conductive material.

6. A material pollutant release detection system according to claim 3, characterized in that: There is a third control valve between the first temperature-controlled water tank and the first branch pipe, and a fourth control valve between the second temperature-controlled water tank and the second branch pipe. The third control valve and the fourth control valve receive instructions from the controller to open and close.

7. The material pollutant release detection system according to claim 1, characterized in that: The bottom surface of the material testing cabin is provided with a bottom surface opening covering the material to be tested, and a connecting component is provided around the bottom surface opening.

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