Material pollutant release amount detection system

Abstract

The invention provides a material pollutant release amount detection system, comprising: an environmental parameter sensor for detecting environmental parameters; according to the pollutant release amount monitoring equipment, an air pump is connected with an air treatment device, the air treatment device is connected with an air conveying main pipeline, the air conveying main pipeline is connected with a first branch pipeline and a second branch pipeline, the side of the first branch pipeline is connected with a first temperature control water tank, and the side of the second branch pipeline is connected with a second temperature control water tank. The first branch pipeline is connected with the material detection cabin, the second branch pipeline is connected with the vacant cabin, and the material detection cabin and the vacant cabin are connected with the gas collection and detection device; the gas collecting and detecting device is used for detecting the pollutant release amount of the gas of the material detecting cabin and the gas of the vacant cabin; the controller regulates and controls the temperature of the first temperature control water tank, the second temperature control water tank and the temperature control device, and / or the controller regulates and controls the air inlet amount of the air pump. According to the system, the threshold of pollutant release amount detection is reduced, and the accuracy of pollutant release amount detection is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pollution gas detection, and particularly relates to a detection system for the release amount of material pollutants. Background Art

[0002] With the progress of technology, the detection methods for the release amount of material pollutants have undergone significant development. In order to accurately detect the release amount of material pollutants, generally, the inner cabin structure of a low-background environmental chamber needs to be designed, and the performance of the inert materials inside the chamber needs to be tested. After verifying the rationality of the selection of the inner cabin materials, the inner cabin structure can be used to detect the release amount of material pollutants. The above method has high requirements for the cabin materials, and even if the materials meet the standards, there is still a certain background, resulting in the measurement accuracy of the pollutant release amount not meeting the requirements. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a detection system for the release amount of material pollutants to meet the requirements of reducing the detection threshold of the release amount of material pollutants and improving the detection accuracy of the release amount of material pollutants.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: The present invention provides a detection system for the release amount of material pollutants, including: an environmental parameter sensor, arranged in the environment to be detected, for detecting the environmental parameters of the environment to be detected; a pollutant release amount monitoring device, connected to the environmental parameter sensor, including: a controller, an air pump, an air treatment device, a main conveying pipeline, a first branch pipeline, a second branch pipeline, a first temperature control water tank, a second temperature control water tank, a material detection chamber, a vacant chamber, 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 conveying pipeline, the end of the main conveying pipeline is divided into a first branch pipeline and a second branch pipeline, the first branch pipeline is side-connected to the first temperature control water tank, the second branch pipeline is side-connected to the second temperature control water tank, the end of the first branch pipeline is connected to the material detection chamber, the end of the second branch pipeline is connected to the vacant chamber, temperature control devices are respectively arranged in the material detection chamber and the vacant chamber, the material detection chamber and the vacant chamber are both connected to the gas collection and detection device; the gas collection and detection device is used for detecting the pollutant release amount of the gas in the material detection chamber and the gas in the vacant chamber; the controller regulates the temperature of the first temperature control water tank, the second temperature control water tank, and the temperature control device according to the environmental parameters of the environment to be detected, and / or, the controller regulates the air intake amount of the air pump according to the environmental parameters of the environment to be detected.

[0005] Optionally, the environmental parameter sensor includes: an air flow velocity detector for detecting the air flow velocity of the environment to be detected; the air flow velocity detector is communicatively connected to the pollutant release amount monitoring device. When the controller receives the air flow velocity change value, it determines the pressurization signal of the air pump according to the air flow velocity change value. When the air pump receives the pressurization signal from the controller, it starts to pump a target air volume into the air treatment device; the material detection chamber 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 detection chamber; the empty chamber 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 chamber.

[0006] 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 chamber is provided with a second temperature and humidity sensor, and the empty chamber is provided with a third temperature and humidity sensor; the controller regulates the temperature control device of the material detection chamber according to the first temperature and humidity sensor and the second temperature and humidity sensor, and regulates the temperature control device of the empty chamber according to the first temperature and humidity sensor and the third temperature and humidity sensor.

[0007] Optionally, a first control valve is provided between the material detection 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 control valve and the second control valve open and close according to the controller's instructions.

[0008] Optionally, the gas collection and detection device includes: a first gas storage chamber. When the first control valve or the second control valve is opened, the gas storage chamber communicates with the material detection chamber or the empty chamber for collecting the gas in the material detection chamber or the empty chamber. The first gas storage chamber is also provided with a first check valve, and the first check valve is connected to the air treatment device through a conveying pipeline for unidirectionally inputting clean air. An opening and closing valve is provided between the air treatment device and the main conveying pipeline and is in a closed state; a second gas storage chamber is connected to the first gas storage chamber through a second check valve for storing the detected pollutant release gas; a heating unit is built into the first gas storage chamber; a gas detection unit is built into the first gas storage chamber for detecting the pollutant release amount of the gas in the material detection chamber or the empty chamber when the first control valve or the second control valve is in the open state, and detecting the remaining pollutant release amount in the gas storage chamber when the first control valve and the second control valve are in the closed state. The controller determines whether to open the first check valve, the second check valve and the heating unit according to the remaining pollutant release amount in the first gas storage chamber.

[0009] Optionally, the temperature control device includes: a heating device, a refrigeration device, and a circulation fan; the material detection chamber includes an inner chamber and an outer chamber. The inner chamber is used to place the material to be detected and the second temperature and humidity sensor. The inner chamber is isolated from the outer chamber. The outer chamber is provided with a refrigeration device, a heating device, and a circulation fan. The isolation material between the inner chamber and the outer chamber is a heat-conducting material; the empty chamber includes an inner chamber and an outer chamber. The inner chamber is used to place the third temperature and humidity sensor. The inner chamber is isolated from the outer chamber. The outer chamber is provided with a refrigeration device, a heating device, and a circulation fan. The isolation material between the inner chamber and the outer chamber is a heat-conducting material.

[0010] Optionally, there is a third control valve between the first temperature control water tank and the first branch pipe, and there is a fourth control valve between the second temperature control water tank and the second branch pipe. The third control valve and the fourth control valve receive the controller instruction to open and close.

[0011] Optionally, a material pollutant release amount detection system further includes: an in-cabin air flow simulation device, communicatively connected to the pollutant release amount monitoring device, for constructing a digital twin model according to the physical property parameters of the material detection chamber and / or the empty chamber, inputting the inlet air flow parameters into the digital twin model for simulation experiments, and simulating different air flow rates according to different combinations of openable and closable air outlets at different positions and quantities. Select the combination of openable and closable air outlets with the smallest difference in air flow rate from the simulated air flow rates to the air flow rate of the environment to be detected, and input the combination of openable and closable air outlets into the controller of the pollutant release amount monitoring device to control the corresponding openable and closable air outlets.

[0012] Optionally, the bottom surface of the material detection chamber is provided with a bottom opening covering the material to be detected, and a connection component is arranged around the bottom opening.

[0013] The embodiment of the present invention provides a material pollutant release amount detection system. By setting an empty chamber, and the empty chamber is consistent with all the environments of the material detection chamber, the pollutant release amount of the pollutant release amount monitoring device itself can be determined according to the pollutant release amount detected by the empty chamber. Compared with the prior art, there are no excessive requirements for the materials of the pollutant release amount detection device, the threshold of pollutant release amount detection is reduced, and the accuracy of pollutant release amount detection is improved.

[0014] Other advantages, objectives, and features of the present invention will be described in the subsequent specification, and to some extent, they are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the objectives, technical solutions, and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration: Figure 1 It is a schematic diagram of the structural modularization of a material pollutant release amount detection system in the present invention; Figure 2 It is a schematic diagram of the structural modularization of the gas collection and detection device in the pollutant release amount monitoring equipment of the present invention; Figure 3 It is a schematic diagram of the structural modularization of the material detection chamber in the present invention; Figure 4 It is a schematic diagram of the structural modularization of the vacant chamber in the present invention. Specific embodiments

[0016] Next, the technical solutions of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can also be the communication inside two components. It can be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0018] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] An embodiment of the present invention provides a material pollutant release amount detection system, as Figure 1 shown, including: An environmental parameter sensor 101, which is arranged in the environment to be detected and is used to detect the environmental parameters of the environment to be detected; A pollutant release amount monitoring device 102, which is connected to the environmental parameter sensor and includes: a controller 1021, an air pump 1022, an air treatment device 1023, a main conveying pipeline 1024, a first branch pipeline 1025, a second branch pipeline 1026, a first temperature control water tank 1027, a second temperature control water tank 1028, a material detection chamber 1029, a vacant chamber 1030, and a gas collection and detection device 1031; Among them, the air pump 1022 is connected to the air treatment device 1023, the air treatment device 1023 is connected to the main conveying pipeline 1024. The end of the main conveying pipeline 1024 is divided into a first branch pipeline 1025 and a second branch pipeline 1026. The first branch pipeline 1025 is connected to the first temperature control water tank 1027 on the side, and the second branch pipeline 1026 is connected to the second temperature control water tank 1028 on the side. The end of the first branch pipeline 1025 is connected to the material detection chamber 1029, and the end of the second branch pipeline 1026 is connected to the empty chamber 1030. Temperature control devices are respectively arranged in the material detection chamber 1029 and the empty chamber 1030. The material detection chamber 1029 and the empty chamber 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 amounts of the gas in the material detection chamber 1029 and the gas in the empty chamber 1030; the controller 1021 regulates the temperatures of the first temperature control water tank 1027, the second temperature control water tank 1028 and the temperature control device according to the environmental parameters of the environment to be detected, and / or the controller 1021 regulates the air intake amount of the air pump 1022 according to the environmental parameters of the environment to be detected.

[0020] Exemplarily, since the harmful gas release amount of pollutants is easily affected by the environment, such as temperature, humidity, wind speed, etc. In this 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. This embodiment does not define the environment to be detected, and those skilled in the art can set it according to needs. One or more environmental parameter sensors 101 are arranged at a position close to 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.

[0021] The environmental parameters of the material to be detected in the use environment obtained by the environmental parameter sensor 101 are input into the pollutant release amount monitoring device 102. The controller 1021 in the pollutant release amount monitoring device 102 regulates the environmental parameters of the material to be detected in the material detection chamber according to the environmental parameters of the material to be detected in the use environment to make them consistent. In this embodiment, the environmental parameters are taken as temperature and humidity for distance explanation.

[0022] Specifically, air enters the air treatment device 1023 through the air pump 1022. The air treatment device 1023 is mainly used to absorb harmful substances in the air and dehumidify it to obtain clean air. The clean air is input into the first branch pipe 1025 through the main conveying pipe 1024. The first branch pipe 1025 is connected to the first temperature control water tank 1027 on the side. The first temperature control water tank 1027 adjusts the temperature of the first temperature control water tank 1027 according to the received first temperature control instruction to obtain air with the first target humidity. The first temperature control instruction is determined by the controller based on the temperature and humidity of the material to be detected in the use environment received by the environmental parameter sensor 101. By raising the temperature of the first temperature control water tank to generate water vapor, the humidity equivalent to that detected by the environmental parameter sensor 101 can be achieved in the material detection chamber 1029.

[0023] Meanwhile, the clean air is input into the second branch pipe 1026 through the main conveying pipe 1024. The second branch pipe 1026 is connected to the second temperature control water tank 1028 on the side. The second temperature control water tank 1028 adjusts the temperature of the second temperature control water tank 1028 according to the received second temperature control instruction to obtain air with the second target humidity. The second temperature control instruction is determined by the controller based on the temperature and humidity of the material to be detected in the use environment received by the environmental parameter sensor 101. By raising the temperature of the second temperature control water tank to generate water vapor, the humidity equivalent to that detected by the environmental parameter sensor 101 can be achieved in the empty chamber 1030.

[0024] The air with the first target humidity is input into the material detection chamber 1029. Meanwhile, the air with the second target humidity is input into the empty chamber 1030, and the temperature control device of the material detection chamber 1029 is adjusted according to the temperature obtained by the environmental parameter sensor 101, so that the material to be detected in the material detection chamber 1029 releases polluted gas under the same temperature and humidity conditions as the environment to be detected. Similarly, the temperature control device of the empty chamber 1030 is adjusted according to the temperature obtained by the environmental parameter sensor 101, so that the empty chamber 1030 maintains the same temperature and humidity conditions as the environment to be detected, in order to study the polluted gas released by the entire pollutant release amount monitoring device 102 under the same temperature and humidity conditions of the environment to be detected during the release amount detection process.

[0025] The gas sampling and detection device 1031 samples the gas in the material detection chamber 1029 and the empty chamber 1030 respectively, so as to analyze and determine the pollutant release amount of the material to be detected and the pollutant release amount of the pollutant release amount monitoring device 102 during the release amount detection process. The difference between the pollutant release amount of the material to be detected and the pollutant release amount of the pollutant release amount monitoring device 102 during the release amount detection process is calculated to determine the actual pollutant release amount of the material to be detected.

[0026] An embodiment of the present invention provides a detection system for the release amount of material pollutants. By setting an empty chamber with all environments being the same as those of the material detection chamber, the release amount of pollutants of the pollutant release amount monitoring device itself can be determined according to the release amount of pollutants detected in the empty chamber. Compared with the prior art, there are no excessive requirements for the materials of the pollutant release amount detection device, the threshold for detecting the release amount of pollutants is reduced, and the accuracy of detecting the release amount of pollutants is improved.

[0027] As an optional implementation manner, for a detection system for the release amount of material pollutants, the environmental parameter sensor includes: an air velocity detector for detecting the air velocity of the environment to be detected; the air velocity detector is communicatively connected to the pollutant release amount monitoring device. When the controller receives the air velocity change value, it determines the pressurization signal of the air pump according to the air velocity change value. When the air pump receives the pressurization signal from the controller, it starts to pump a target air volume into the air treatment device; the material detection chamber 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 detection chamber; the empty chamber 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 chamber.

[0028] Exemplarily, the air velocity detector can be a thermistor probe or an impeller anemometer. This embodiment does not limit the air velocity detector and can be set according to needs. The air velocity detector is communicatively connected to the pollutant release amount monitoring device. When the controller receives the air velocity change, according to the aerodynamic principle, there is a certain functional relationship between the air flow rate in the flow channel and the total flow pressure, total temperature, flow area and velocity coefficient. The theoretical total pressure can be calculated through a formula, which is the prior art and will not be elaborated here. The air pump inputs a target gas volume into the air treatment device to obtain purified air, and then inputs it into the first branch pipe and the second branch pipe along the main conveying pipe, and finally enters the material detection chamber and the empty chamber. Further, flow velocity detectors can also be set in the material detection chamber and the empty chamber. Through a closed-loop control strategy, the controller adjusts the pressurization degree of the air pump according to the flow velocity feedback measured by the flow velocity detectors in the material detection chamber and the empty chamber in real time, so as to adjust at any time and improve the accuracy of the air velocity. Specifically, if the actual flow velocity is lower than the target flow velocity, the pressurization degree is increased; if the actual flow velocity is higher than the target flow velocity, the pressurization degree is decreased.

[0029] Since the release amount of formaldehyde gas is affected by air circulation, that is, in an environment with higher circulation, the formaldehyde release rate is higher. In order to improve the air circulation in this embodiment and facilitate better excitation of the release of pollutant gases, a plurality of openable and closable air outlets are respectively arranged in the material detection chamber and the empty chamber. Since the purified air is slightly lighter than the air quality with formaldehyde, in order to better replace the air in this embodiment, the plurality of openable and closable air outlets are arranged below the air inlet.

[0030] An embodiment of the present invention provides a detection system for the release amount of material pollutants, which takes into account the influence of air flow rate on the release amount of material pollutants. The air flow rate detector can detect the air flow rate of the environment to be detected in real time, and through the communication connection with the pollutant release amount monitoring device, it can achieve an immediate response to the change of air flow rate, creating a relatively restored environment to be detected, reducing the release amount deviation caused by the experimental environment, and being conducive to accurately measuring the pollutant release amount of material pollutants in the environment to be detected.

[0031] As an optional implementation manner, the environmental parameter sensor includes: a first temperature and humidity sensor for detecting the temperature and humidity information of the environment to be detected; a second temperature and humidity sensor is provided in the material detection chamber, and a third temperature and humidity sensor is provided in the empty chamber; the controller regulates the temperature control device of the material detection chamber according to the first temperature and humidity sensor and the second temperature and humidity sensor, and regulates the temperature control device of the empty chamber according to the first temperature and humidity sensor and the third temperature and humidity sensor.

[0032] Exemplarily, the way for the controller to regulate the temperature control device of the material detection chamber according to the first temperature and humidity sensor and the second temperature and humidity sensor can be to determine 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 regulate the temperature control device of the material detection chamber 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 regulation of the empty chamber adopts the same method and will not be elaborated here.

[0033] An embodiment of the present invention provides a detection system for the release amount of material pollutants, which takes into account the influence of temperature and humidity on the release amount of material pollutants. The temperature and humidity sensor can detect the temperature and humidity of the environment to be detected in real time, and through the communication connection with the pollutant release amount monitoring device, it can achieve an immediate response to the change of temperature and humidity, creating a relatively restored environment to be detected, reducing the release amount deviation caused by the experimental environment, and being conducive to accurately measuring the pollutant release amount of material pollutants in the environment to be detected.

[0034] As an alternative embodiment, a first control valve is provided between the material detection 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 control valve and the second control valve open and close according to the instructions of the controller. Control valves are provided between the material detection chamber and the empty chamber and the gas collection and detection device respectively, for collecting the gas in the material detection chamber and the empty chamber respectively. When the placement time of the material in the material detection chamber has reached the target duration, such as 24 hours, the controller issues a control instruction. Since the content of polluted gas in the empty chamber is relatively small, the control instruction first causes the second control valve to open, connecting the empty chamber and the gas collection and detection device, collecting the gas in the empty chamber, and performing detection; when the detection is completed, within a preset interval, such as half an hour (during this period, it is convenient for the gas in the gas collection and detection device to be replaced), the controller issues a control instruction to cause the first control valve to open, connecting the material detection chamber and the gas collection and detection device, collecting the gas in the material detection chamber, and performing detection. By the above method, it is possible to avoid the mixing of the gas in the material detection chamber and the gas in the empty chamber, resulting in inaccurate measurement and improve the measurement accuracy.

[0035] As an alternative embodiment, as Figure 2 shown, the gas collection and detection device in the pollutant release amount monitoring device 102 includes: a first gas storage chamber 10311, when the first control valve or the second control valve is opened, the gas storage chamber communicates with the material detection chamber or the empty chamber, for collecting the gas in the material detection chamber or the empty chamber. The first gas storage chamber is also provided with a first check valve, and the first check valve is connected to the air treatment device through a conveying pipeline, for unidirectionally inputting clean air, and an opening and closing valve is provided between the air treatment device and the main conveying pipeline, and is in a closed state; a second gas storage chamber 10312, connected to the first gas storage chamber through a second check valve, for storing the detected pollutant release gas; a heating unit 10313, built in the first gas storage chamber; a gas detection unit 10314, built in the first gas storage chamber, for detecting the pollutant release amount of the gas in the material detection chamber or the empty chamber in the state where the first control valve or the second control valve is opened, and detecting the remaining pollutant release amount in the gas storage chamber in the state where 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 remaining pollutant release amount in the first gas storage chamber.

[0036] Exemplarily, in this embodiment, the gas collection and detection device includes a second gas storage chamber. The second gas storage chamber can be made of an elastic material, for collecting the detected pollutant release gas, facilitating the subsequent unified treatment of the pollutant release gas. The first gas storage chamber and the second gas storage chamber are connected through a check valve to prevent the gas entering the second gas storage chamber from flowing back to the first gas storage chamber.

[0037] The first gas storage tank is connected to the material detection tank or the empty tank through a first control valve and a second control valve respectively. When the first control valve or the second control valve is in the open state, the controller issues a control signal to make the gas detection unit repeatedly detect the pollutant release amount of the gas in the material detection tank or the empty tank. When the first control valve and the second control valve are in the closed state, the controller issues a control signal to open the first check valve in the first gas storage tank. At this time, the controller issues a control instruction to make the air pump input air into the air treatment device, and the clean air processed by the air processor is input into the first gas storage tank to dilute the pollutant emission gas in the first gas storage tank. It should be noted that, in this case, an opening and closing valve is provided between the air treatment device and the main conveying pipeline. At this time, in order to prevent the clean air from entering the gas in the material detection tank or the empty tank, the opening and closing valve is in the closed state. At the same time, the second check valve is opened to discharge the pollutant emission gas into the second gas storage tank.

[0038] In order to accelerate the flow of air, a heating unit is also provided in this embodiment to quickly discharge the pollutant emission gas into the second gas storage tank, shorten the detection time difference between the material detection tank and the empty tank, and improve the accuracy of the final detection result. Within a fixed cycle, the gas detection unit detects the pollutant release amount of the first gas storage tank. When the release amount meets the preset requirements, the first check valve, the second check valve and the heating unit are closed to facilitate the next detection of the pollutant release amount in the material detection tank or the empty tank.

[0039] The embodiment of the present invention provides a material pollutant release amount detection system, which further optimizes the gas collection and detection device, can quickly empty the residual gas of the previous round of the gas collection and detection device, reduces the time difference between the gas detection of the material detection tank and the gas detection of the empty tank, enables the gas in the material detection tank and the gas in the empty tank to measure the pollutant release amount within a relatively small time interval, and improves the accuracy of the material pollutant release amount detection.

[0040] As an optional implementation manner, the temperature control device includes: a heating device, a refrigeration device and a circulation fan; as Figure 3 shown, the material detection tank includes an inner tank and an outer tank. The inner tank is used to place the material to be detected and a second temperature and humidity sensor. The inner tank is isolated from the outer tank. The outer tank is provided with a refrigeration device, a heating device and a circulation fan. The isolation material between the inner tank and the outer tank is a heat-conducting material; the empty tank is as Figure 4 shown, including an inner tank and an outer tank. The inner tank is used to place a third temperature and humidity sensor. The inner tank is isolated from the outer tank. The outer tank is provided with a refrigeration device, a heating device and a circulation fan. The isolation material between the inner tank and the outer tank is a heat-conducting material.

[0041] Exemplarily, in this embodiment, an inner cabin and an outer cabin are respectively arranged in the material detection cabin and the empty cabin. The outer cabin is used to adjust the temperature and place a refrigeration device, a heating device and a circulation fan. Since the inner cabin wall is made of heat-conducting material, the temperature control of the outer cabin can create an effective temperature environment for the inner cabin. The outer cabin and the inner cabin can be supported by brackets, so that there is a space between the six-sided walls of the inner cabin and the six-sided walls of the outer cabin, enabling a circulating flow of air to be formed between the inner cabin and the outer cabin. A temperature and humidity sensor is arranged in the inner cabin to obtain the temperature of the inner cabin. When the temperature of the inner cabin is lower than the temperature of the environment to be detected, the heat dissipation of the heating device is increased. When it is higher than the temperature of the environment to be detected, while reducing the heat dissipation of the heating device, the refrigeration device can also be turned on to quickly cool down. Compared with directly placing heating equipment in the inner cabin in this embodiment, by arranging a refrigeration device, a heating device and a circulation fan in the outer cabin and conducting heat transfer into the inner cabin, the heating is more uniform, the environmental temperature can be better simulated, the pollutant release amount of the material in the environment to be detected can be effectively restored, and the accuracy of the release amount detection is improved.

[0042] As an alternative implementation manner, there is a third control valve between the first temperature control water tank and the first branch pipe, and a fourth control valve between the second temperature control water tank and the second branch pipe. The third control valve and the fourth control valve open and close according to the controller instruction. By arranging control valves between the temperature control water tank and the branch pipes, it can effectively avoid the problem of inaccurate humidity control caused by the leakage of water vapor when the provided humidity has reached the humidity of the environment to be detected, and improve the accuracy of the release amount detection.

[0043] As an alternative implementation manner, a material pollutant release amount detection system further includes: an in-cabin airflow simulation device, communicatively connected to the pollutant release amount monitoring device, for constructing a digital twin model according to the physical property parameters of the material detection cabin and / or the empty cabin, inputting the air inlet airflow parameters into the digital twin model for simulation experiments, simulating different air velocities according to different combinations of openable and closable air outlets at different positions and quantities, selecting the combination of openable and closable air outlets with the smallest difference from the air velocity of the environment to be detected among the simulated air velocities, and inputting the combination of openable and closable air outlets into the controller of the pollutant release amount monitoring device to control the corresponding openable and closable air outlets.

[0044] Exemplarily, through digital twin technology, physical models can be integrated to map entity products in a virtual space, thereby reflecting the life cycle process of entity equipment. Physical property parameters of the material testing chamber and / or the empty chamber are collected, such as dimensions, material properties, and the opening positions, etc., and these parameters are input into the digital twin model. By using computational fluid dynamics (CFD) technology, a numerical test model of the chamber can be established, and numerical simulation calculations of the air flow organization can be carried out. Different air flow velocities and directions can be simulated in the virtual environment, as well as how they are affected by the openable air outlets. Through simulation experiments, the influence of different combinations of openable air outlets with different positions and quantities on the air flow velocity can be simulated. Specifically, by comparing these simulation results, the air outlet combination with the smallest difference in air flow velocity from the environment to be detected is selected. The selected optimal air outlet combination is input into the controller of the pollutant release amount monitoring device to control the corresponding openable air outlets.

[0045] An embodiment of the present invention provides a material pollutant release amount detection system. By simulating the flow direction and velocity of the air flow in the material testing chamber and / or the empty chamber through a digital twin model, the optimal air outlet combination is determined, so that the air flow velocity in the material testing chamber and / or the empty chamber can effectively restore the air flow velocity in the environment to be detected, improving the accuracy of the detection.

[0046] As an optional implementation manner, a bottom opening covering the material to be detected is provided on the bottom surface of the material testing chamber, and a connection component is provided around the bottom opening. The connection component can be made of rubber material with the same size as the bottom opening of the material testing chamber and is fixed around the bottom opening of the material testing chamber by bolts. The material to be detected is placed below the bottom opening of the material testing chamber, and the self-weight of the material testing chamber can be used to make the rubber material closely adhere to the material to be detected, forming a sealed space for the material testing chamber. In this way, the pollutant release amount monitoring device can be directly placed above the material to be detected, avoiding damaging the sample where the material to be detected is located.

[0047] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. 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 arranged 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, including: 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 conveying main pipeline, the end of the conveying 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 the 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.

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 connected to the pollutant release monitoring device for communication. 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. When the air pump receives the pressurization signal from the controller, it starts to pump the target air volume into the air treatment device. 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.

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 the 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 vacant cabin is provided with a third temperature and humidity sensor; The controller adjusts the temperature control device of the material testing 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 3, characterized in that: A first control valve is arranged between the material detection cabin and the gas collection and detection device, and a second control valve is arranged 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.

5. A material pollutant release detection system according to claim 4, characterized in that: The gas collection and detection device includes: The first gas storage cabin, when the first control valve or the second control valve is opened, the gas storage cabin is connected with 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 with the air treatment device through a delivery pipeline 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 pipeline, and is in a closed state; A second gas storage chamber, connected to the first gas storage chamber via a second check valve, for storing the detected pollutant release gas; A heating unit is 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 gas in the material detection cabin or the gas in the empty cabin when the first control valve or the second control valve is open, and to detect the amount of pollutants released from the residual 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 amount of pollutants released from the residual gas storage cabin.

6. A material pollutant release detection system according to claim 3, characterized in that: 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 provided 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. 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 provided 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.

7. 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 there is 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.

8. A material pollutant release detection system according to claim 2, characterized in that: Also includes: The cabin airflow simulation equipment is communicatively connected with the pollutant release monitoring equipment, and is used to construct a digital twin model according to the physical property parameters of the material testing cabin and / or the empty cabin, and input the air inlet airflow parameters into the digital twin model for simulation experiments, 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 air flow rate of the simulated air flow rate and the air flow rate of the environment to be tested, and input the openable and closable air outlet combination into the controller of the pollutant release monitoring equipment to control the corresponding openable and closable air outlets.

9. A 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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