Multi-path air inlet polluted air storage device

Abstract

The invention relates to a multi-path air inlet polluted air storage device, and belongs to the technical field of air storage, the multi-path air inlet polluted air storage device comprises a plurality of air inlet pipes, a storage module and a control module, the storage module comprises a shell and a plurality of air storage tanks arranged in the shell, and the air storage tanks and the air inlet pipes are arranged in a one-to-one correspondence mode; one end of each air inlet pipe is connected with the corresponding air storage tank, and the other end is communicated with the outside; the control module is electrically connected with a plurality of sensors, the plurality of sensors are arranged in a plurality of branches, the plurality of sensors are used for detecting concentration data of pollutants in air and uploading the concentration data to the control module, and the control module judges whether the discrete degree of the concentration data uploaded in sequence in the plurality of branches exceeds a threshold value or not; when the judgment result is yes, the control module instructs that the branch and the gas storage tank corresponding to the concentration data with the maximum dispersion degree are abnormal gas storage tanks; the gas with different pollution degrees in a plurality of sampling points enters different gas storage tanks, so that the sampling accuracy is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of air storage, and in particular relates to a multi-path intake polluted air storage device. Background Art

[0002] In production and life, human activities will produce pollutants such as waste gas. When there are too many pollutants, the environmental quality will deteriorate. Therefore, it is necessary to use a sampling and dissolution device to sample the pollutants in the air and monitor the pollutant content in the air.

[0003] The general air storage device has a relatively simple structure, and is mostly used for single air sampling. After the air is used, it is relatively single, inconvenient to store, and difficult to continuously sample over a period of time. For this reason, Chinese patent CN112393114B discloses an air sampling storage device for air pollution control, including a mounting base, a gas sampling box is installed on the top of the mounting base, and gas sampling windows are opened on the tops of both sides of the gas sampling box. The insides of the two gas sampling windows are rotatably connected to fan shafts through brackets. The top of the gas sampling box is fixedly connected to two plate racks, and the ends of the two fan shafts located inside the gas sampling windows are fixedly connected to fans, and the two groups of fans are installed in opposite directions. The ends of the two fan shafts close to each other pass through the two plate racks respectively; it is achieved by arranging multiple gas storage bottles at the edge of the disc The fan shaft is driven by wind force, and the L-shaped plate and the lifting rod are lifted and lowered by the cam, and the disc is quantitatively driven to rotate by the cooperation of the guide column and the wavy groove, thereby realizing the interval and continuous sampling of the outside air within a certain period of time, ensuring the adequacy of air sampling and improving the later detection effect; however, during the use of the above-mentioned structure, in some cases, it is necessary to collect polluted air from multiple collection points through different pipelines to ensure the sampling of multiple pollution sources. However, in the process of using the above-mentioned structure for multi-way air intake, the air pollution levels from multiple channels are different. When several airs with different pollution levels are mixed and stored in the same container, the stored air cannot reflect the actual pollution level of the air at the sampling point. Therefore, a multi-way air intake polluted air storage device with high sampling accuracy is required. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a multi-path intake polluted air storage device, which has the characteristic of high sampling accuracy.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A multi-way intake polluted air storage device comprises a plurality of intake pipes, a storage module and a control module, wherein the storage module comprises a housing and a plurality of air storage tanks arranged in the housing, wherein the plurality of air storage tanks and the plurality of intake pipes are arranged in a one-to-one correspondence, wherein one end of the plurality of intake pipes is connected to the corresponding air storage tank, and the other end is connected to the outside;

[0007] The control module is electrically connected to a plurality of sensors, and the plurality of sensors are arranged in a plurality of branches. The plurality of sensors are used to detect the concentration data of pollutants in the air and upload the data to the control module. The control module determines whether the discreteness of a plurality of concentration data uploaded successively in a plurality of branches exceeds a threshold value. When the judgment result is yes, the control module instructs the branch and the gas tank corresponding to the concentration data with the largest discreteness to be an abnormal gas tank.

[0008] As a preferred technical solution of the present invention, the control module is pre-input with a variance threshold F0, and several sensors are used to detect the pollutant concentration data N in the air in the corresponding intake pipe and upload it to the control module. The control module determines whether the variance FN of several concentration data uploaded successively by any sensor exceeds F0. When the judgment result is yes, the control module instructs the air intake pipe corresponding to the sensor whose concentration data variance FN exceeds F0 to be an abnormal air tank.

[0009] As a preferred technical solution of the present invention, an alarm sensor is arranged in the shell, and the alarm sensor is used to detect the air pollution concentration in the shell, and upload the air pollution concentration in the shell as leakage data to the control module, and the control module calculates the average value of several concentration data, and the control module determines whether the difference between the leakage data and the average value exceeds a threshold value, and the control module issues an alarm when the judgment result is yes.

[0010] As a preferred technical solution of the present invention, an alarm sensor is arranged in the shell, and the alarm sensor is used to detect the air pollution concentration in the shell, and upload the air pollution concentration in the shell as leakage data to the control module, and the control module calculates the average value of several concentration data, and the control module determines whether the difference between the leakage data and the average value exceeds a threshold value, and the control module issues an alarm when the judgment result is yes.

[0011] As a preferred technical solution of the present invention, the alarm sensor is used to detect the air pollution concentration Nw in the shell, and upload the air pollution concentration Nw in the shell as leakage data to the control module, the control module calculates the average value Nj of several concentration data, the control module determines whether it meets the threshold range [Nj-p, Nj+p], and issues an alarm when the judgment result is yes, where p=p0×F0 / FN.

[0012] As a preferred technical solution of the present invention, it also includes a control panel, and the control panel is used to input the values ​​of t0, p0 and F0.

[0013] As a preferred technical solution of the present invention, a rubber plug is provided at the opening above any of the gas storage tanks, an opening is provided in any of the rubber plugs, the air intake pipe passes through the opening and extends into the corresponding gas storage tank, and the rubber plug around the opening is used to make the opening and the air intake pipe fit tightly.

[0014] As a preferred technical solution of the present invention, an airtight ring is provided between the rubber stopper and the gas storage tank.

[0015] The beneficial effects of the present invention are:

[0016] (1) Multiple air inlet pipes are set up to collect gas from multiple sampling points, and the multiple air inlet pipes are connected to different gas storage tanks, so that gases with different pollution concentrations in multiple sampling points can enter different gas storage tanks, thereby avoiding the mixing of gases from multiple sampling points and improving sampling accuracy;

[0017] (2) By setting up a number of sensors to detect the pollutant concentration of the air in a number of intake branches, when the variance of the concentration of a number of pollutants exceeds a threshold, the command control module instructs the branch and the air tank corresponding to the concentration data with the largest discreteness to be an abnormal air tank, so as to facilitate the identification of the operating personnel in the subsequent analysis, prevent a small number of air samples that deviate far from other samples from interfering with the air in the air tank, and improve the sampling accuracy;

[0018] (3) By making the control module judge whether the threshold value [Nj-p, Nj+p] is exceeded, when the variance FN of several concentration data is large, the average value of several concentration data is greatly affected by the discrete value and deviates, resulting in the deviation of the threshold range, resulting in the air pollution concentration in the shell being judged to exceed the threshold range when no leakage occurs, the threshold range is expanded, the strictness of the judgment is reduced, and the probability of false alarm is reduced. When the variance FN of several concentration data is large, the average value of several concentration data is less affected by the discrete value, and the difference between the threshold range and the pollution concentration in the shell can largely represent the actual difference, the threshold range is narrowed and the strictness of the judgment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the gas storage module of the present invention;

[0022] Figure 3 It is a control block diagram of the present invention.

[0023] Description of main component symbols:

[0024] In the figure: 1. Shell; 2. Air storage tank; 3. Air intake pipe; 4. Control module. DETAILED DESCRIPTION

[0025] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0026] See also Figure 1-3 A multi-way air intake polluted air storage device includes a plurality of air intake pipes 3, a storage module, a control module and a storage module. The storage module includes a housing 1 and a plurality of air storage tanks 2 arranged in the housing 1. The plurality of air storage tanks 2 and the plurality of air intake pipes 3 are arranged in a one-to-one correspondence. One end of the plurality of air intake pipes 3 is connected to the corresponding air storage tank 2, and the other end is connected to the outside.

[0027] Specifically, the housing 1 is a hollow cylinder, and a plurality of air intake pipes 3 are arranged through the circular top surface of the cylindrical housing 1. At this time, the plurality of air intake pipes 3 are connected in parallel with each other, and the operator predefines a plurality of air detection points. The ends of the plurality of air intake pipes 3 away from the air storage tank 2 are distributed at the plurality of air detection points. At this time, the plurality of air intake pipes 3 can collect the air at the plurality of air detection points and transport it to the air storage tank 2, so that the plurality of air storage tanks 2 can store the air at the plurality of air detection points;

[0028] At the same time, a plurality of gas storage tanks 2 are arranged on a disc, and a plurality of gas storage tanks 2 are arranged in a circular array on the edge of the upper surface of the disc;

[0029] When in use, a plurality of air inlet pipes 3 collect air from a plurality of air detection points and transport the air into the corresponding air storage tank 2 to complete air storage;

[0030] Specifically, a rubber plug is provided at the opening above each gas storage tank 2, and an opening is provided in the rubber plug of each gas storage tank 2. At the same time, the branch close to the end of the corresponding gas storage tank 2 passes through the opening and extends into the gas storage tank 2. The rubber plug around the opening is used to block the opening. The opening is an inverted cone-shaped cavity in the middle of the rubber plug. The narrowest part of the inverted cone opening is squeezed and closed by the rubber plug around the opening in a natural state. At this time, the opening is squeezed in a natural state, and the rubber plug around the opening is closed under the action of elastic force, so that the inner wall of the opening and the air inlet pipe 3 are tightly attached to prevent gas leakage therefrom.

[0031] At the same time, in order to further improve the air tightness of the gas storage tank 2, an airtight ring is provided between the rubber plug and the gas storage tank 2;

[0032] By setting up a multi-channel air inlet pipe 3 to collect gas from multiple sampling points, and connecting the multi-channel air inlet pipe 3 to different gas storage tanks 2, gases with different pollution concentrations at multiple sampling points can enter different gas storage tanks 2;

[0033] At the same time, by integrating all equipment except several air intake pipes 3 into the storage module, the entire storage device can be flexibly deployed. The deployment can be completed by simply moving the storage module to the place where it needs to be deployed and connecting the air intake pipes 3.

[0034] In some cases, the air pollution levels from multiple air detection points are different, so the air is stored in different gas tanks 2. In some cases, the air collected at some collection points cannot represent the actual pollution level of the collection points. For example, when wind blows around the collection point, it blows air from other places into the intake pipe 3, resulting in a large deviation between the concentration of air pollutants in the intake pipe 3 and the typical level of the collection point in a short period of time. This part of the air introduced into the storage tank cannot reflect the actual pollution level of the air at the sampling point. In order to reduce the impact of the fluctuation of the air composition at the intake pipe 3 on the final sampling caused by the fluctuation of the air composition in the gas tank 2, the control module is electrically connected to a plurality of sensors, which are arranged in a plurality of branches. The plurality of sensors are used to detect the concentration data of pollutants in the air and upload them to the control module. The control module determines whether the discreteness of a plurality of concentration data uploaded successively in a plurality of branches exceeds a threshold value. When the judgment result is yes, the control module instructs the branch and gas tank 2 corresponding to the concentration data with the largest discreteness to be an abnormal gas tank 2.

[0035] Specifically, the control module is pre-input with a variance threshold F0. The concentration sensor in each branch detects the pollutant concentration N of the air in the branch once per second, and uploads the concentration data to the control module at a frequency of once per second. After receiving a number of concentration data each time, the control module records the data uploaded from the same sensor as a batch, calculates the variance of this batch of data, and then determines whether the variance exceeds the threshold. When the judgment result is yes, it means that the pollutant concentration in the air of the sensor and the intake pipe 3 corresponding to this batch of data has a large fluctuation. At this time, it is necessary to mark the air at this air detection point so that the concentration of air pollutants stored in the storage tank is as close as possible to that of most air detection points. At this time, the control module instructs the branch corresponding to the concentration data with the largest discreteness to be closed. At the same time, each branch is provided with a valve electrically connected to the control module and opened and closed by the control module instruction. The control module controls the opening and closing of the branch by opening and closing the valve;

[0036] In the above process, specifically, the control module is pre-input with a variance threshold F0, and several sensors are used to detect the pollutant concentration data N uploaded successively in the same intake pipe 3 and upload them to the control module. The control module determines whether the variance FN of several concentration data uploaded successively exceeds F0. When the judgment result is yes, the control module instructs the branch corresponding to the concentration data with the largest discreteness to be closed.

[0037] By setting up several sensors to detect the pollutant concentration of the air in several intake branches, when the variance of several pollutant concentrations exceeds the threshold, the command control module instructs the branch corresponding to the concentration data with the largest discreteness and the gas tank 2 to be the abnormal gas tank 2, so as to facilitate the identification of the operating personnel in the subsequent analysis, prevent a small number of air samples that deviate far from other samples from interfering with the air in the gas tank 2, and improve the sampling accuracy.

[0038] In the above process, the rubber plug and the air inlet pipe 3 cooperate to complete the plugging of the gas tank 2 during the air intake process. However, in some cases, there is a probability of gas leakage. When gas leakage occurs, the gas tank 2 cannot store gas normally, and the outer shell 1 inside the storage module is polluted, affecting the subsequent action of taking out the gas tank 2 for analysis. For this reason, an alarm sensor is provided in the outer shell 1. The alarm sensor is used to detect the air pollution concentration in the outer shell 1, and upload the air pollution concentration in the outer shell 1 as leakage data to the control module. The control module calculates the average value of several concentration data, and the control module determines whether the difference between the leakage data and the average value exceeds a threshold value. The control module issues an alarm when the judgment result is yes.

[0039] In some cases, the sealing effect of the shell 1 itself is not strong, and the device itself is used to collect polluted air at the place where air pollution occurs, so the surrounding polluted air has a probability of entering the shell 1, so the shell 1 has a probability of being filled with polluted air, and at this time the gas tank 2 has not leaked, so the difference between the air pollution concentration in the shell 1 and the average concentration of the gas in the gas tank 2 reflects the leakage probability. When a leak occurs, gas exchange occurs inside and outside the gas tank 2, and the pollutant concentration in the shell 1 is close to the average value of the gas tank 2 and several concentration data. Therefore, the smaller the difference, the greater the leakage probability, and the larger the difference, the smaller the leakage probability;

[0040] However, when the concentration of air pollutants in the air intake pipe 3 deviates greatly from the typical level at the collection point, and this part of the air introduced into the storage tank cannot reflect the actual pollution level of the air at the sampling point, the average values ​​of several concentration data are greatly affected by the discrete value and deviate, and the threshold range deviates as well. At this time, there is a probability that when no leakage occurs, the average value and the threshold are close to the actual concentration of air pollutants in the housing 1, and then the air pollution concentration in the housing 1 is judged to be within the threshold range, resulting in a false alarm;

[0041] To this end, the alarm sensor is used to detect the air pollution concentration Nw in the housing 1, and upload the air pollution concentration Nw in the housing 1 as leakage data to the control module, the control module calculates the average value Nj of a number of concentration data, the control module determines whether it meets the threshold range [Nj-p, Nj+p], and issues an alarm when the judgment result is yes, where p=p0×F0 / FN;

[0042] When the variance FN is large, it means that the average values ​​of several concentration data are greatly affected by the discrete values ​​and deviate, and the threshold range deviates. It is necessary to narrow the threshold range and reduce the strictness of the judgment, thereby reducing the probability of false alarm. At this time, the value of p = p0 × FN / F0 is small, and the threshold range [Nj-p, Nj+p] is reduced. When the variance is large, the threshold range is reduced to reduce the probability of false alarm.

[0043] When the variance FN is small, it means that the average value of several concentration data is less affected by the discrete value and has a smaller deviation. The difference between the air pollution concentration in the housing 1 and the average concentration of the gas in the gas tank 2 can better reflect the leakage probability. It is necessary to expand the threshold range and improve the strictness of the judgment. At this time, the value of p = p0 × FN / F0 is large, and the threshold range [Nj-p, Nj+p] is expanded. When the variance is small, the threshold range is expanded to improve the detection probability of leakage.

[0044] By making the control module judge whether the threshold value [Nj-p, Nj+p] is exceeded, when the variance FN of several concentration data is large, the average value of several concentration data is greatly affected by the discrete value and deviates, resulting in the deviation of the threshold range, resulting in the air pollution concentration in the shell 1 being judged to be within the threshold range when no leakage occurs, the threshold range is lowered, thereby reducing the strictness of the judgment and the probability of false alarm; when the variance FN of several concentration data is small, the average value of several concentration data is less affected by the discrete value, and the difference between the threshold range and the pollution concentration in the shell can largely represent the actual difference, the threshold range is expanded and the strictness of the judgment is improved.

[0045] A control panel is also included for inputting values ​​of t0, S0, and F0.

[0046] The working principle and use process of the present invention:

[0047] When in use, a plurality of air inlet pipes 3 collect air from a plurality of air detection points and transport the air into corresponding air storage tanks 2 to complete air storage.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multi-path intake polluted air storage device, characterized in that: It includes a plurality of air intake pipes, a storage module and a control module, wherein the storage module includes a shell and a plurality of air storage tanks arranged in the shell, the plurality of air storage tanks and the plurality of air intake pipes are arranged in a one-to-one correspondence, one end of the plurality of air intake pipes is connected to the corresponding air storage tank, and the other end is connected to the outside; The control module is electrically connected to a plurality of sensors, and the plurality of sensors are arranged in a plurality of branches. The plurality of sensors are used to detect the concentration data of pollutants in the air and upload the data to the control module. The control module determines whether the discreteness of a plurality of concentration data uploaded successively in a plurality of branches exceeds a threshold value. When the judgment result is yes, the control module instructs the branch and the gas tank corresponding to the concentration data with the largest discreteness to be an abnormal gas tank.

2. A multi-path intake polluted air storage device according to claim 1, characterized in that: The control module is pre-input with a variance threshold F0. Several of the sensors are used to detect pollutant concentration data N in the air in the corresponding intake pipe and upload the data to the control module. The control module determines whether the variance FN of several concentration data uploaded successively by any sensor exceeds F0. When the judgment result is yes, the control module instructs the air intake pipe corresponding to the sensor whose concentration data variance FN exceeds F0 to be an abnormal air tank.

3. A multi-path intake polluted air storage device according to claim 1, characterized in that: An alarm sensor is provided in the shell, and the alarm sensor is used to detect the air pollution concentration in the shell, and upload the air pollution concentration in the shell as leakage data to the control module. The control module calculates the average value of several concentration data, and the control module determines whether the difference between the leakage data and the average value exceeds a threshold value. The control module issues an alarm when the judgment result is yes.

4. A multi-path intake polluted air storage device according to claim 3, characterized in that: An alarm sensor is provided in the shell, and the alarm sensor is used to detect the air pollution concentration in the shell, and upload the air pollution concentration in the shell as leakage data to the control module. The control module calculates the average value of several concentration data, and the control module determines whether the difference between the leakage data and the average value exceeds a threshold value. The control module issues an alarm when the judgment result is yes.

5. A multi-path intake polluted air storage device according to claim 4, characterized in that: The alarm sensor is used to detect the air pollution concentration Nw in the shell, and upload the air pollution concentration Nw in the shell as leakage data to the control module. The control module calculates the average value Nj of several concentration data. The control module determines whether it meets the threshold range [Nj-p, Nj+p], and issues an alarm when the judgment result is yes, where p=p0×F0 / FN.

6. A multi-path intake polluted air storage device according to claim 3, characterized in that: A control panel is also included, and the control panel is used to input the values ​​of t0, p0 and F0.

7. The multi-path intake polluted air storage device according to claim 1, characterized in that: A rubber plug is provided at the opening above any of the gas storage tanks, and an opening is provided in any of the rubber plugs. The air intake pipe passes through the opening and extends into the corresponding gas storage tank. The rubber plug around the opening is used to make the opening and the air intake pipe fit tightly.

8. The multi-path intake polluted air storage device according to claim 6, characterized in that: An airtight ring is arranged between the rubber plug and the gas storage tank.

Images