Infrared gas analysis multi-path sample gas guiding structure

Abstract

The utility model relates to infrared gas analysis technical field, and disclose a kind of infrared gas analysis multiway sample gas guiding structure, including base, the base top front side is provided with gas analyzer, the base top is fixedly connected with fixed frame, the base top is provided with air intake mechanism, the air intake mechanism top is provided with sealing mechanism, the gas analyzer rear side top is fixedly connected with air inlet, the gas analyzer rear side bottom is fixedly connected with air outlet, when using, by the air intake mechanism set, when needing to carry out analysis work to sample gas by infrared gas analysis equipment, by setting three groups of air intake tank, mounting head and supporting assembly in the rear side and left and right sides of concentration box, different sources of sample gas can be accessed simultaneously, without frequently replacing sampling pipeline, shorten the detection period of multiple sample gas, improve the work efficiency of gas analysis, especially suitable for the scene needing to carry out synchronous analysis to multiple monitoring points.

Description

Technical Field

[0001] This utility model relates to the field of infrared gas analysis technology, specifically to a multi-channel sample gas guiding structure for infrared gas analysis. Background Technology

[0002] Infrared gas analysis technology, with its advantages of high sensitivity, high selectivity and fast response, has been widely used in many fields such as ambient air quality monitoring, gas composition analysis in industrial production processes and detection of exhaust gas in energy and chemical industries. In practical application scenarios, it is often necessary to analyze the sample gas from multiple monitoring points in the same area simultaneously or continuously in order to obtain comprehensive and accurate gas composition data.

[0003] However, current mainstream infrared gas analyzers have many shortcomings in the design of sample gas guiding structures, making it difficult to meet the needs of efficient analysis of sample gases from multiple monitoring points:

[0004] Traditional infrared gas analyzers typically employ a single-path gas inlet design for their sample gas flow structure. When analyzing sample gases from multiple monitoring points, operators must frequently disassemble and replace the sampling pipes, which is not only time-consuming and labor-intensive but also leads to interruptions in the detection process and extends the overall detection cycle for multiple sets of sample gases.

[0005] Some existing devices rely on natural air intake, which cannot continuously output stable intake pressure and flow. When the sample gas source pressure fluctuates or the pipeline resistance changes, sampling interruption is likely to occur. In order to avoid dust, particulate matter and other impurities in the sample gas clogging the analyzer detection channel or contaminating the core components, existing devices usually set up sample gas filtration components. However, these components are mostly fixed integrated structures. When the filter material is saturated with impurities and needs to be cleaned or replaced, the operation is cumbersome and the maintenance time is long.

[0006] Therefore, it is necessary to design a multi-channel sample gas guiding structure for infrared gas analysis to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a multi-channel sample gas guiding structure for infrared gas analysis to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an infrared gas analysis multi-channel sample gas guiding structure, including a base, a gas analyzer is provided on the front side of the top of the base, a fixing frame is fixedly connected to the top of the base, an air inlet mechanism is provided on the top of the base, a sealing mechanism is provided on the top of the air inlet mechanism, an air inlet hole is fixedly connected to the top of the rear side of the gas analyzer, and an air outlet hole is fixedly connected to the bottom of the rear side of the gas analyzer.

[0009] The air intake mechanism includes a central box, which is fixedly connected to the rear top of the base. A delivery pipe is fixedly connected to the top of the central box. An air intake chamber is fixedly connected to the rear of the central box. An installation head is fixedly connected to the rear of the air intake chamber. A fan is fixedly connected inside the air intake chamber. A solenoid valve is fixedly connected to the front end of the air intake chamber. A support frame is fixedly connected to the top of the air intake chamber. An adjusting shaft is threadedly connected inside the support frame. A limit frame is rotatably connected to the bottom periphery of the adjusting shaft. Connecting arms are fixedly connected to the left and right sides of the top of the limit frame. A purification cylinder is fixedly connected to the front of the delivery pipe. A filter basket is slidably connected inside the purification cylinder. A filter bag is slidably connected inside the filter basket. A flexible hose is fixedly connected to the bottom of the purification cylinder. A connector is fixedly connected to the front of the flexible hose. The connector is inserted into the periphery of the air intake hole.

[0010] Preferably, the bottom of the gas analyzer is in contact with the top of the base, the limiting frame is slidably connected to the periphery of the mounting head and is V-shaped, and the connecting arm is slidably connected to the inside of the support frame, so that when the external air inlet pipe is inserted into the periphery of the mounting head, the limiting frame can fix the air inlet pipe and the mounting head.

[0011] Preferably, the purification cylinder is fixedly connected inside the fixed frame, and the support frame, adjusting shaft, limiting frame and connecting arm are provided in two sets and symmetrically distributed on the upper and lower sides of the air inlet box, so as to ensure the stability of the external air inlet pipe connection by setting two sets.

[0012] Preferably, the air inlet box, mounting head, support frame, fan, solenoid valve, adjusting shaft, limit frame and connecting arm are provided in three sets, and are located on the rear side and left and right sides of the central box, respectively, so that multiple sample gas intakes can be realized by setting three sets.

[0013] Preferably, the sealing mechanism includes a sealing cover, which is threaded to the top periphery of the purification cylinder. A sliding rod is slidably connected inside the sealing cover. A limiting block is fixedly connected to the bottom of the sliding rod. The limiting block is slidably connected to the top of the filter bag. A fixing plate is fixedly connected to the periphery of the sliding rod. A spring is sleeved around the periphery of the sliding rod.

[0014] Preferably, the top of the spring is fixedly connected to the top of the inner sealing cover, and the bottom of the spring is fixedly connected to the top of the fixed plate, so that the spring can ensure the stability of the limiting block.

[0015] Preferably, the sealing cover, slide bar, spring, fixing plate and limiting block are provided in two sets and symmetrically distributed on the left and right sides inside the sealing cover, so as to further ensure the stability of the filter bag during operation by setting two sets.

[0016] Compared with the prior art, this utility model provides a multi-channel sample gas guiding structure for infrared gas analysis, which has the following beneficial effects:

[0017] 1. This multi-channel sample gas guide structure for infrared gas analysis, through its designed air intake mechanism, allows for the simultaneous intake of multiple sample gases from different sources when analyzing sample gases using infrared gas analysis equipment. This is achieved by installing three sets of air intake boxes, mounting heads, and supporting components on the rear and left / right sides of the collection box. This eliminates the need for frequent sampling pipe changes, shortens the detection cycle for multiple sample gases, and improves the efficiency of gas analysis. It is particularly suitable for scenarios requiring simultaneous analysis of multiple monitoring points. A fixed fan inside the air intake box provides stable air intake power, ensuring that the sample gas continuously and evenly enters the collection box. To avoid sampling interruptions or flow fluctuations caused by insufficient natural air intake pressure, the solenoid valve at the front end of the air intake box enables rapid and precise control of the flow of each sample gas. Different sample gases can be flexibly switched according to testing needs, and the amount of residual sample gas during the switching process is small, reducing cross-interference between different sample gases. The purification cylinder at the front of the delivery pipe is equipped with a filter basket and filter bag, which can effectively filter the sample gas entering the gas analyzer and remove impurities such as dust and particulate matter from the sample gas. The design of sliding connection between the filter basket and the purification cylinder, and between the filter bag and the filter basket, facilitates the disassembly, cleaning or replacement of the filter bag in the later stage.

[0018] 2. This infrared gas analysis multi-channel sample gas guiding structure, through its sealing mechanism, ensures a preliminary seal when the filter bag filters oxygen inside the purification cylinder. The sealing cap is threaded onto the top periphery of the purification cylinder. As the sealing cap moves downwards, the limiting block contacts the top of the filter bag and slides on top of it, simultaneously compressing the sliding rod, fixing plate, and spring. This causes the sliding rod to slide inside the sealing cap, and the spring applies downward elastic pressure to the limiting block through the fixing plate, ensuring the limiting block tightly adheres to the top of the filter bag until the sealing cap is completely fixed to the top of the purification cylinder. This not only guarantees the sealing of the purification cylinder but also facilitates the fixation of the filter bag. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the intake mechanism.

[0023] Figure 4This is a schematic diagram of the cross-sectional structure of the central box;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the air intake box;

[0025] Figure 6 This is a schematic diagram of the front structure of the delivery pipe;

[0026] Figure 7 This is a schematic diagram of the sealing mechanism.

[0027] In the diagram: 1. Base; 2. Gas analyzer; 3. Mounting frame; 4. Inlet mechanism; 5. Sealing mechanism; 6. Inlet port; 7. Outlet port; 41. Collection box; 42. Delivery pipe; 43. Inlet box; 44. Mounting head; 45. Support frame; 46. Fan; 47. Solenoid valve; 48. Adjusting shaft; 49. Limiting frame; 491. Connecting arm; 492. Purification cylinder; 493. Filter basket; 494. Filter bag; 495. Hose; 496. Connecting head; 51. Sealing cover; 52. Slide rod; 53. Spring; 54. Mounting plate; 55. Limiting block. Detailed Implementation

[0028] 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.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] This utility model provides the following technical solution:

[0031] Example 1

[0032] Please see Figure 1-7This utility model provides a technical solution: an infrared gas analysis multi-channel sample gas guiding structure, including a base 1, a gas analyzer 2 is arranged on the front side of the top of the base 1, a fixing frame 3 is fixedly connected to the top of the base 1, an air inlet mechanism 4 is arranged on the top of the base 1, a sealing mechanism 5 is arranged on the top of the air inlet mechanism 4, an air inlet hole 6 is fixedly connected to the top of the rear side of the gas analyzer 2, and an air outlet hole 7 is fixedly connected to the bottom of the rear side of the gas analyzer 2.

[0033] The air intake mechanism 4 includes a central box 41, which is fixedly connected to the top rear side of the base 1. A delivery pipe 42 is fixedly connected to the top of the central box 41. An air intake box 43 is fixedly connected to the rear side of the central box 41. An installation head 44 is fixedly connected to the rear side of the air intake box 43. A fan 46 is fixedly connected inside the air intake box 43. A solenoid valve 47 is fixedly connected to the front end of the air intake box 43. A support frame 45 is fixedly connected to the top of the air intake box 43. An adjusting shaft 48 is threadedly connected inside the support frame 45. A limit frame 49 is rotatably connected to the bottom periphery of the adjusting shaft 48. Connecting arms 491 are fixedly connected to the left and right sides of the top of the limit frame 49. A purification cylinder 492 is fixedly connected to the front side of the delivery pipe 42. A filter basket 493 is slidably connected inside the purification cylinder 492. A filter bag 494 is slidably connected inside the filter basket 493. A hose 495 is fixedly connected to the bottom of the purification cylinder 492. A connector 496 is fixedly connected to the front side of the hose 495. The connector 496 is inserted into the periphery of the air intake hole 6.

[0034] The bottom of the gas analyzer 2 is in contact with the top of the base 1. The limiting frame 49 is slidably connected to the periphery of the mounting head 44, and the limiting frame 49 is V-shaped. The connecting arm 491 is slidably connected to the inside of the support frame 45, so that when the external air inlet pipe is inserted into the periphery of the mounting head 44, the air inlet pipe and the mounting head 44 can be fixed by the limiting frame 49.

[0035] The purification cylinder 492 is fixedly connected inside the fixed frame 3. The support frame 45, the adjusting shaft 48, the limiting frame 49 and the connecting arm 491 are provided in two sets and are symmetrically distributed on the upper and lower sides of the air inlet box 43. By setting two sets, it is easy to ensure the stability of the external air inlet pipe connection.

[0036] The air inlet box 43, mounting head 44, support frame 45, fan 46, solenoid valve 47, adjusting shaft 48, limit frame 49 and connecting arm 491 are provided in three sets, and are located on the rear side and left and right sides of the central box 41 respectively, so that multiple sample gas intakes can be realized by setting three sets.

[0037] Example 2

[0038] Please see Figure 1-7Furthermore, based on Embodiment 1, the sealing mechanism 5 includes a sealing cover 51, which is threadedly connected to the top periphery of the purification cylinder 492. A slide rod 52 is slidably connected inside the sealing cover 51. A limit block 55 is fixedly connected to the bottom of the slide rod 52. The limit block 55 is slidably connected to the top of the filter bag 494. A fixing plate 54 is fixedly connected to the periphery of the slide rod 52. A spring 53 is sleeved around the periphery of the slide rod 52.

[0039] The top of the spring 53 is fixedly connected to the top of the inner part of the sealing cover 51, and the bottom of the spring 53 is fixedly connected to the top of the fixed plate 54, so that the stability of the limit block 55 can be ensured by the spring 53.

[0040] The sealing cover 51, slide bar 52, spring 53, fixing plate 54 and limiting block 55 are provided in two sets and symmetrically distributed on the left and right sides inside the sealing cover 51. By setting two sets, the stability of the filter bag 494 during operation can be further guaranteed.

[0041] In actual operation, when this device is used, when it is necessary to analyze the sample gas through the infrared gas analysis equipment, first place the gas analyzer 2 on the top of the base 1, and at the same time insert the connector 496 into the outer periphery of the air inlet 6, and insert the external gas exhaust pipe into the outer periphery of the air outlet 7.

[0042] The gas inlet pipes for different regions are inserted into the periphery of the mounting head 44. The adjusting shaft 48 is rotated, causing the adjusting shaft 48 to move the limiting frame 49. The inner side of the limiting frame 49 slides to the periphery of the mounting head 44, and the limiting frame 49 causes the connecting arm 491 to slide inside the support frame 45. This fixes the external gas inlet pipe to the mounting head 44, ensuring the stability of the gas intake. The support frame 45, adjusting shaft 48, limiting frame 49 and connecting arm 491 symmetrically arranged on the upper and lower sides of the gas inlet box 43 constitute the pipe fixing structure, realizing the quick clamping or loosening of the external gas inlet pipe. By setting three sets of gas inlet boxes 43, mounting heads 44 and supporting components on the rear and left and right sides of the collection box 41, multiple sample gases from different sources can be connected at the same time without frequent replacement of sampling pipes. This shortens the detection cycle of multiple sample gases and improves the working efficiency of gas analysis. It is especially suitable for scenarios that require simultaneous analysis of multiple monitoring points.

[0043] The fan 46 fixed inside the air inlet box 43 provides stable air intake power, ensuring that the sample gas can continuously and evenly enter the collection box 41, avoiding sampling interruption or flow fluctuation caused by insufficient natural air intake pressure. In conjunction with the solenoid valve 47 at the front end of the air inlet box 43, it can achieve rapid and accurate control of the on / off of each sample gas path, and can flexibly switch different sample gas paths according to the detection requirements. During the switching process, the sample gas residue is small, reducing cross-interference between different samples. When the gas enters the purification cylinder 492 through the delivery pipe 42, the purification cylinder 492 is equipped with a filter basket 493 and a filter bag 494, which can effectively filter the sample gas entering the gas analyzer 2, removing dust, particulate matter and other impurities from the sample gas. The design of the filter basket 493 slidingly connected to the purification cylinder 492 and the filter bag 494 slidingly connected to the filter basket 493 makes it convenient to disassemble, clean or replace the filter bag 494 later. The purified gas will be delivered to the gas analyzer 2 for analysis through the hose 495 and connector 496. After the analysis is completed, it will be discharged through the air outlet 7.

[0044] Before conducting the analysis, the sealing cap 51 needs to be threaded onto the top periphery of the purification cylinder 492 to achieve a preliminary seal. When the sealing cap 51 moves downward, the limiting block 55 will contact the top of the filter bag 494 and slide on its top, while simultaneously squeezing the slide rod 52, the fixing plate 54, and the spring 53, causing the slide rod 52 to slide inside the sealing cap 51. The spring 53 applies downward elastic pressure to the limiting block 55 through the fixing plate 54, making the limiting block 55 tightly fit the top of the filter bag 494 until the sealing cap 51 is completely fixed on the top of the purification cylinder 492. This not only ensures the sealing of the purification cylinder 492 but also facilitates the fixing of the filter bag 494.

[0045] Remove the sealing cap 51 to clean the filter basket 493 and filter bag 494, ensuring the purification effect;

[0046] The gas analyzer used in this case is model 2: ABB Measurement & Analytics EL3000 series;

[0047] In this application, all fans 46 and solenoid valves 47 need to be connected to the same PLC controller to achieve automated operation. The PLC controller is existing technology, and those skilled in the art are well aware of its operation method. Therefore, this application will not describe it in detail.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A multi-channel sample gas guiding structure for infrared gas analysis, comprising a base (1), characterized in that: A gas analyzer (2) is provided on the front top of the base (1), a fixed bracket (3) is fixedly connected to the top of the base (1), an air intake mechanism (4) is provided on the top of the base (1), a sealing mechanism (5) is provided on the top of the air intake mechanism (4), an air inlet (6) is fixedly connected to the top rear side of the gas analyzer (2), and an air outlet (7) is fixedly connected to the bottom rear side of the gas analyzer (2). The air intake mechanism (4) includes a central box (41), which is fixedly connected to the rear top of the base (1). A delivery pipe (42) is fixedly connected to the top of the central box (41). An air intake box (43) is fixedly connected to the rear side of the central box (41). An installation head (44) is fixedly connected to the rear side of the air intake box (43). A fan (46) is fixedly connected inside the air intake box (43). A solenoid valve (47) is fixedly connected inside the front end of the air intake box (43). A support frame (45) is fixedly connected to the top of the air intake box (43). An adjusting shaft (48) is threaded inside the support frame (45). The bottom periphery of the adjusting shaft (48) is rotatably connected to the limiting frame (49). The top left and right sides of the limiting frame (49) are fixedly connected to the connecting arms (491). The front side of the conveying pipe (42) is fixedly connected to the purification cylinder (492). The inside of the purification cylinder (492) is slidably connected to the filter basket (493). The inside of the filter basket (493) is slidably connected to the filter bag (494). The bottom of the purification cylinder (492) is fixedly connected to the hose (495). The front side of the hose (495) is fixedly connected to the connector (496). The connector (496) is inserted into the periphery of the air inlet (6).

2. The infrared gas analysis multi-channel sample gas guiding structure according to claim 1, characterized in that: The bottom of the gas analyzer (2) is in contact with the top of the base (1), the limiting frame (49) is slidably connected to the periphery of the mounting head (44), and the limiting frame (49) is V-shaped. The connecting arm (491) is slidably connected to the inside of the support frame (45).

3. The infrared gas analysis multi-channel sample gas guiding structure according to claim 1, characterized in that: The purification cylinder (492) is fixedly connected inside the fixed frame (3). The support frame (45), adjustment shaft (48), limit frame (49) and connecting arm (491) are provided in two sets and are symmetrically distributed on the upper and lower sides of the air inlet box (43).

4. The infrared gas analysis multi-channel sample gas guiding structure according to claim 1, characterized in that: The air intake box (43), mounting head (44), support frame (45), fan (46), solenoid valve (47), adjusting shaft (48), limit frame (49) and connecting arm (491) are provided in three sets, and are located on the rear side and left and right sides of the central box (41), respectively.

5. The infrared gas analysis multi-channel sample gas guiding structure according to claim 1, characterized in that: The sealing mechanism (5) includes a sealing cover (51), which is threaded to the top periphery of the purification cylinder (492). A slide rod (52) is slidably connected inside the sealing cover (51). A limit block (55) is fixedly connected to the bottom of the slide rod (52). The limit block (55) is slidably connected to the top of the filter bag (494). A fixing plate (54) is fixedly connected to the periphery of the slide rod (52). A spring (53) is sleeved around the periphery of the slide rod (52).

6. The infrared gas analysis multi-channel sample gas guiding structure according to claim 5, characterized in that: The top of the spring (53) is fixedly connected to the top of the inner part of the sealing cover (51), and the bottom of the spring (53) is fixedly connected to the top of the fixed plate (54).

7. The infrared gas analysis multi-channel sample gas guiding structure according to claim 5, characterized in that: The sealing cover (51), slide bar (52), spring (53), fixing plate (54) and limiting block (55) are provided in two sets and are symmetrically distributed on the left and right sides inside the sealing cover (51).

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