An online monitoring device for toxic gases in a removable drainage ditch

Abstract

The utility model belongs to gas monitoring equipment technical field, solved the problem that the continuity and stability of monitoring work are insufficient. Specifically relate to a kind of extraction drainage ditch toxic gas on-line monitoring device, including detector main part and air inlet cavity, detector main part is set to hollow structure, and detector main part is equipped with air inlet pipe mouth, air inlet cavity is located in the inside of the detector main part, and air inlet cavity is connected in the air inlet pipe mouth;Partition, partition is located in the inside of the air inlet cavity and the air inlet cavity is divided into first chamber and second chamber, first chamber is connected with the air inlet pipe mouth, second chamber is located below the first chamber;Separation piece, separation piece is located in the inside of the first chamber, separation piece is contacted with toxic gas, and water drop in toxic gas is adsorbed by separation piece;The surface of partition is equipped with perforation, and liquid in first chamber is discharged into second chamber by perforation. The equipment avoids impurity interference, and improves the accuracy of monitoring.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas monitoring equipment, specifically relating to an online monitoring device for toxic gases in a drainage ditch. Background Technology

[0002] In environments such as industrial production and urban drainage systems, toxic gases may accumulate in drainage ditches, posing a serious threat to the environment and human health. Whether it's an urban underground drainage system or a wastewater discharge ditch in an industrial plant, accurate monitoring of gases within the drainage ditch is crucial for ensuring the normal operation of facilities and maintaining environmental safety and human health. To monitor the concentration of these toxic gases in real time and take timely measures to prevent accidents, monitoring devices are needed to detect the gases in the drainage ditches.

[0003] In existing technologies, when monitoring equipment is used to extract and detect gas in drainage ditches, the high humidity levels inside the ditches, exceeding standard values ​​for normal environments, inevitably lead to water droplets being trapped in the extracted gas samples. These water droplets interfere with the detection process. For example, the presence of water droplets alters the proportions and distribution of components in the sample, causing deviations in the signals acquired by the detection instrument and significantly reducing the accuracy of the results. Secondly, when this water-laden gas enters the monitoring device, it damages the hardware components, such as precision electronic components like sensor probes and signal processing circuits. Prolonged exposure to a humid environment can cause the metal leads of these components to oxidize and corrode, leading to poor contact; the circuit board may also experience short circuits due to moisture, ultimately rendering the entire monitoring device inoperable and severely impacting the continuity and stability of the monitoring work. Utility Model Content

[0004] In view of this, the present invention provides an online monitoring device for toxic gases in drainage ditches, the purpose of which is to achieve effective extraction and accurate monitoring of toxic gases in drainage ditches through structural design optimization, while avoiding interference from impurities such as water droplets.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An online monitoring device for toxic gases in a drainage ditch includes a detector body and an air inlet chamber. The detector body has a hollow structure and an air inlet is provided on the detector body. The air inlet chamber is located inside the detector body and is connected to the air inlet. The device also includes a partition plate located inside the air inlet chamber and dividing the air inlet chamber into a first chamber and a second chamber. The first chamber is connected to the air inlet, and the second chamber is located below the first chamber.

[0007] A separator is disposed inside the first chamber. The separator comes into contact with the toxic gas and adsorbs water droplets in the toxic gas.

[0008] The partition has perforations on its surface, through which liquid in the first chamber is drained into the second cavity.

[0009] As a preferred technical solution, the separating component includes a baffle plate, and a plurality of the baffle plates are axially spaced and staggered in the first cavity.

[0010] Furthermore, the surface of the baffle plate is provided with guide lines, which are arranged in a streamlined structure and extend towards the direction of the baffle plate.

[0011] Furthermore, the second chamber includes a liquid storage chamber, which is connected to the perforation and receives the liquid discharged from the first chamber.

[0012] Furthermore, a drain outlet is provided on the outer side wall of the detector body, and the drain outlet is connected to the liquid storage chamber, wherein a drain plug is fitted on the drain outlet.

[0013] Furthermore, it also includes a detection chamber, which is connected to the first chamber, and a detection unit is provided inside the detection chamber to detect the gas in the first chamber.

[0014] Furthermore, a filter section is provided at the connection between the first chamber and the detection chamber to filter the gas in the first chamber.

[0015] Furthermore, an exhaust fan is provided at the connection between the first chamber and the air inlet, and the exhaust fan draws external gas into the first chamber.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] By setting up the separator, gas-liquid separation is achieved for the gas entering the first chamber, effectively avoiding interference from water droplets and other impurities on the monitoring results, improving the accuracy of monitoring, and preventing short circuits caused by moisture inside the detector body, further enhancing the protection of the detector body. Attached Figure Description

[0018] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of the online monitoring device for toxic gases in a drainage ditch provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the detector body provided by this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the detector body provided by this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the shielding plate provided by this utility model.

[0023] Detector body - 1; Air inlet - 2; Water drain plug - 3; Separator - 4; Liquid storage chamber - 5; Detection chamber - 6; Exhaust fan - 7; Baffle plate - 8; Separator - 9; Filter section - 10; Detection section - 11; Drain outlet - 12; Perforation - 13; Guide ripples - 14. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] In existing technologies, when using monitoring equipment to extract and detect gas from drainage ditches, the high humidity levels in these ditches often exceed standard environmental levels. Therefore, during gas extraction, the gas sample inevitably contains water droplets. These water droplets, once mixed into the sample, interfere with the detection process. For example, water droplets alter the proportions and distribution of components in the sample, causing deviations in the signals acquired by the detection instrument and significantly reducing the accuracy of the results. Furthermore, gas containing water droplets entering the monitoring device may damage its hardware components, particularly delicate electronic components such as sensor probes and signal processing circuits. Prolonged exposure to a humid environment can cause the metal pins of these components to gradually oxidize and corrode, leading to poor contact; the circuit board may also short-circuit due to moisture, ultimately causing the entire monitoring device to malfunction and severely affecting the continuity and stability of monitoring operations.

[0027] Therefore, in order to solve the above problems and prevent short circuits caused by water droplets entering the detection device, this utility model discloses an online monitoring device for toxic gases in a drainage ditch. (See reference...) Figures 1-4The device includes a detector body 1 and an air inlet chamber. The detector body 1 has a hollow structure and an air inlet 2. The air inlet chamber is located inside the detector body 1 and is connected to the air inlet 2. Specifically, it also includes a partition 9 and a separator 4. The partition 9 is located inside the air inlet chamber and divides the air inlet chamber into a first chamber and a second chamber. The first chamber is connected to the air inlet 2. The second chamber is located below the first chamber. The separator 4 is located inside the first chamber and is in contact with the toxic gas. The separator 4 adsorbs water droplets in the toxic gas. The surface of the partition 9 has perforations 13, through which liquid in the first chamber is discharged into the second chamber.

[0028] In this embodiment, when the gas in the drainage ditch is drawn into the air intake chamber, the gas first enters the first chamber and comes into contact with the separator 4. During the contact with the separator 4, water droplets in the gas adhere to the surface of the separator 4 and fall down the separator 4 onto the partition 9. Finally, the gas enters the second chamber through the perforation 13 on the partition 9. In this way, the gas and water droplets entering the detector body 1 can be separated, and the dry gas can be introduced into the detector body 1 for detection. This helps to avoid the water droplets affecting the detection results, while ensuring the dryness inside the monitoring device and extending its service life.

[0029] In a specific embodiment, the separating component 4 includes a baffle plate 8. Several baffle plates 8 are axially spaced and staggered in the first chamber. The arrangement of these baffle plates 8 allows the gas entering the first chamber to continuously contact the baffle plates 8 during the flow process, making it easier for water droplets in the gas to adhere to the baffle plates 8 and drip down to the partition plate 9 under the action of gravity, thereby achieving the effect of gas-liquid separation.

[0030] In addition, the staggered arrangement of the baffles 8 increases the flow path of the gas in the first chamber, allowing the gas to stay in the first chamber for a longer time, thereby improving the separation efficiency of water droplets and gas.

[0031] Furthermore, the surface of the baffle plate 8 is provided with guide patterns 14. The design of the guide patterns 14 can guide water droplets to slide more smoothly along the surface of the baffle plate 8 onto the partition plate 9. Specifically, the guide patterns 14 are arranged in a streamlined structure, which allows water droplets to slide more stably along the trajectory of the guide patterns 14, avoiding water droplets from lingering or splashing on the surface of the baffle plate 8, thereby further improving the gas-liquid separation effect.

[0032] Furthermore, the guide ripples 14 extend towards the partition 9, ensuring that water droplets can accurately drip onto the partition 9 and enter the second chamber through the perforations 13, further improving the efficiency of gas-liquid separation.

[0033] In this embodiment, the second chamber includes a liquid storage chamber 5, which is connected to the perforation 13 and receives the liquid discharged from the first chamber.

[0034] Meanwhile, in addition to the liquid storage chamber 5 for collecting liquid, the second chamber can also be further equipped with a drainage mechanism to facilitate the timely discharge of liquid accumulated in the liquid storage chamber 5. Specifically, a drain port 12 is provided on the outer wall of the detector body 1, which communicates with the liquid storage chamber 5, and a drain plug 3 is fitted onto the drain port 12. When drainage is required, simply open the drain plug 3, and the liquid in the liquid storage chamber 5 can be discharged through the drain port 12.

[0035] Preferably, the bottom of the liquid storage chamber 5 is inclined, which facilitates better accumulation and drainage of liquid within the chamber. Specifically, the inclined bottom ensures that the liquid flows smoothly to the drain outlet 12 under gravity, preventing liquid accumulation or stagnation within the chamber. This allows for more effective management of the liquid within the chamber, ensuring the continuous and stable operation of the monitoring device. Furthermore, the inclined bottom design simplifies drainage operations and improves work efficiency.

[0036] Furthermore, in order to effectively extract gas from the drainage ditch, an exhaust fan 7 is installed at the connection between the first chamber and the air inlet 2. The activation of the exhaust fan 7 generates negative pressure, drawing gas from the drainage ditch into the first chamber through the air inlet 2, thereby achieving gas extraction and monitoring.

[0037] Example 2

[0038] Based on Example 1, in order to further reduce impurities in the gas and ensure the accuracy of the detection results, please refer to... Figure 2 Furthermore, this invention also includes a filter section 10 at the connection between the first chamber and the detection chamber 6. The filter section 10 can further filter the gas entering the detection chamber 6, removing impurities and tiny particles, thereby ensuring that the detection section 11 can accurately detect the concentration of toxic gases.

[0039] In this embodiment, the filter section 10 may use multiple screens with different pore sizes. These screens are stacked in order of decreasing pore size to filter dust particles in the gas. At the same time, cotton strips can be placed on the screens to further adsorb tiny water droplets in the gas.

[0040] Furthermore, the detection chamber 6 is connected to the first chamber, and the detection chamber 6 is equipped with a detection unit 11, which detects the gas in the first chamber. The detection unit 11 can be an electrochemical sensor, a PID sensor, or an NDIR sensor, etc. These sensors have the characteristics of high sensitivity, fast response speed, and accurate measurement, and can monitor the concentration of toxic gases in real time and output the monitoring data to an external display device or control system, so that the staff can understand the concentration of toxic gases in the drainage ditch in a timely manner and take corresponding treatment measures.

[0041] In summary, based on Embodiments 1 and 2, the operating steps of this extraction-type online monitoring device for toxic gases in drainage ditches are as follows:

[0042] First, the exhaust fan 7 is started, generating negative pressure to draw the gas from the drainage ditch into the first chamber through the air inlet 2. After entering the first chamber, the gas comes into contact with the baffle plate 8 in the separator 4. Water droplets in the gas adhere to the surface of the baffle plate 8 and slide down it under gravity. Guided by the flow guide lines 14, the droplets fall more steadily onto the partition plate 9, and finally enter the liquid storage chamber 5 in the second chamber through the perforations 13 on the partition plate 9. At this point, the gas has completed gas-liquid separation, and the dry gas continues to flow into the detection chamber 6.

[0043] Subsequently, after filtration by the filter unit 10, impurities and tiny particles are removed, ensuring the purity of the gas entering the detection chamber 6. The detection unit 11 then monitors the gas in real time, accurately measuring the concentration of toxic gases using high-precision sensors such as electrochemical sensors, PID sensors, or NDIR sensors, and rapidly transmitting the monitoring data to an external display device or control system.

[0044] Finally, by checking the data on the display device, staff can monitor the concentration of toxic gases in the drainage ditch in real time. If the concentration exceeds the standard, the emergency response mechanism can be activated immediately to effectively prevent accidents and ensure the safety of the environment and human health.

[0045] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An online monitoring device for toxic gas in a draw-off ditch, comprising a detector main body and an air inlet cavity, wherein the detector main body is in a hollow structure, and an air inlet pipe is arranged on the detector main body; the air inlet cavity is arranged in the inside of the detector main body, and the air inlet cavity is communicated with the air inlet pipe, characterized in that, Also includes: A partition is provided inside the air intake chamber and divides the air intake chamber into a first chamber and a second chamber. The first chamber is connected to the air intake port, and the second chamber is located below the first chamber. A separator is disposed inside the first chamber. The separator comes into contact with the toxic gas and adsorbs water droplets in the toxic gas. The partition has perforations on its surface, through which liquid in the first chamber is drained into the second chamber.

2. The online monitoring device for toxic gases in extraction-type drainage ditches according to claim 1, characterized in that, The separating component includes a baffle plate, and a plurality of the baffle plates are arranged alternately at axial intervals in the first cavity.

3. The online monitoring device for toxic gases in extraction-type drainage ditches according to claim 2, characterized in that, The surface of the baffle plate is provided with flow guide patterns, which are arranged in a streamlined structure and extend towards the direction of the baffle plate.

4. The online monitoring device for toxic gases in extraction-type drainage ditches according to claim 1, characterized in that, The second chamber includes a liquid storage chamber, which is connected to the perforation and receives the liquid discharged from the first chamber.

5. The online monitoring device for toxic gases in extraction-type drainage ditches according to claim 1, characterized in that, A drain outlet is provided on the outer side wall of the detector body, and the drain outlet is connected to the liquid storage chamber. A drain plug is fitted on the drain outlet.

6. The online monitoring device for toxic gases in extraction-type drainage ditches according to claim 1, characterized in that, It also includes a detection chamber, which is connected to the first chamber and is equipped with a detection unit to detect the gas in the first chamber.

7. The online monitoring device for toxic gases in extraction-type drainage ditches according to claim 6, characterized in that, A filter section is provided at the connection between the first chamber and the detection chamber to filter the gas in the first chamber.

8. The online monitoring device for toxic gases in extraction-type drainage ditches according to claim 7, characterized in that, An exhaust fan is installed at the connection between the first chamber and the air inlet, and the exhaust fan draws external gas into the first chamber.

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