Gas sampling assembly and gas detection device

Abstract

The utility model discloses a gas sampling assembly and a gas detection device, and relates to the technical field of granary gas detection. Wherein the gas sampling assembly is used for sampling gas in the granary. The gas sampling assembly comprises a sampling probe, an exhaust pipe, a sampling box and a sampling valve, and the sampling probe is arranged in the granary; the exhaust pipe is connected with the sampling probe; the sampling box is arranged outside the granary and is provided with an accommodating cavity; the sampling valve is arranged in the containing cavity and connected with the exhaust pipe. According to the technical scheme provided by the utility model, the safety of granary gas sampling is improved, and the safety of grain storage operation is further improved.

Description

Technical Field

[0001] This utility model relates to the field of grain warehouse gas detection technology, and in particular to a gas sampling component and a gas detection device. Background Technology

[0002] During grain storage, the levels of gaseous components (such as phosphorus hydride and carbon dioxide) within the grain silo can negatively impact both human health and the grain itself. To ensure the safety of grain silos, timely gas detection is necessary to identify potential problems, and gas sampling is a crucial step in this process.

[0003] Currently, gas testing in grain silos typically requires personnel to enter the silo to take multiple samples. Manual sampling is complex, and the gases produced during the sampling process can have negative effects on human health, posing significant safety risks. Utility Model Content

[0004] The main purpose of this invention is to provide a gas sampling component and a gas detection device, which aims to improve the safety of gas sampling in grain warehouses, thereby improving the safety of grain storage operations.

[0005] To achieve the above objectives, the present invention proposes a gas sampling component for sampling gas within a grain silo, comprising:

[0006] A sampling probe is installed inside the grain silo;

[0007] The suction tube is connected to the sampling probe;

[0008] A sampling box, located outside the grain silo and equipped with a receiving cavity; and,

[0009] A sampling valve is located in the receiving cavity and connected to the extraction pipe.

[0010] In one embodiment, a plurality of sampling probes are provided, and the plurality of sampling probes are evenly distributed within the grain silo.

[0011] In one embodiment, the sampling valve includes a plurality of needle valves and a plurality of connectors, each needle valve being connected to two of the connectors; and,

[0012] The suction tubes are provided in multiple ways, and each suction tube is connected to a connector and a sampling probe.

[0013] In one embodiment, the connector and the needle valve are connected by threads.

[0014] In one embodiment, the connector is configured as a stainless steel connector; and / or,

[0015] The needle valve is configured as a stainless steel needle valve.

[0016] In one embodiment, the gas sampling assembly further includes:

[0017] The return air pipe extends into the grain silo at one end, and the other end of the return air pipe is connected to the sampling valve.

[0018] In one embodiment, the extraction tube is configured as a flexible tube; and / or,

[0019] The return air pipe is configured as a flexible pipe.

[0020] In one embodiment, the gas sampling assembly further includes:

[0021] A protective tube is fitted around the outer periphery of the extraction tube. One end of the protective tube is connected to the sampling box, and the other end of the protective tube extends into the grain silo.

[0022] In one embodiment, the sampling box includes:

[0023] The housing has the receiving cavity and a first opening communicating with the receiving cavity;

[0024] The door body is movably disposed at the first opening; and,

[0025] A fixed crossbeam is disposed within the receiving cavity, and the sampling valve is fixed to the fixed crossbeam.

[0026] This utility model also proposes a gas detection device, including the gas sampling component described above.

[0027] The technical solution of this utility model involves setting up a gas sampling assembly for sampling gas within a grain silo. The gas sampling assembly includes a sampling probe, an extraction pipe, a sampling box, and a sampling valve. The sampling probe is positioned inside the grain silo; the extraction pipe is connected to the sampling probe; the sampling box is located outside the grain silo and has a receiving cavity; the sampling valve is located in the receiving cavity and connected to the extraction pipe. Compared to the manual sampling method in the prior art, this utility model provides a gas sampling assembly that achieves sampling by placing the sampling probe inside the grain silo and connecting the sampling valve and the sampling probe through the extraction pipe. This avoids operators entering the grain silo, improving the safety of gas sampling in the grain silo and thus enhancing the safety of grain storage operations. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of a structure of an embodiment of the gas sampling assembly provided by this utility model;

[0030] Figure 2 for Figure 1 A schematic diagram of an embodiment of a gas sampling assembly from another perspective;

[0031] Figure 3 for Figure 1 A schematic diagram of the structure of one embodiment of the sampling box;

[0032] Figure 4 for Figure 3 Internal structural diagram of one embodiment of the sampling box.

[0033] Explanation of icon numbers:

[0034] 100. Sampling probe;

[0035] 200. Evacuation pipe;

[0036] 300. Sampling box; 310. Box body; 320. Door; 330. Fixed crossbeam; 340. Sampling valve; 341. Connector; 342. Needle valve;

[0037] 400. Protective tube.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] 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 scope of protection of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] During grain storage, the levels of gaseous components (such as phosphorus hydride and carbon dioxide) within the grain silo can negatively impact both human health and the grain itself. To ensure the safety of grain silos, timely gas detection is necessary to identify potential problems, and gas sampling is a crucial step in this process.

[0043] Currently, gas testing in grain silos typically requires personnel to enter the silo to take multiple samples. Manual sampling is complex, and the gases produced during the sampling process can have negative effects on human health, posing significant safety risks.

[0044] This invention proposes a gas sampling component to improve the safety of gas sampling in grain silos, thereby improving the safety of grain storage operations.

[0045] Please see Figures 2 to 4 In one embodiment, the gas sampling assembly is used to sample the gas in the grain silo. The gas sampling assembly includes a sampling probe 100, a suction pipe 200, a sampling box 300, and a sampling valve 340.

[0046] A sampling probe 100 is installed inside the grain silo to collect gas within the silo. Specifically, in one embodiment, the sampling probe 100 is placed at a predetermined sampling point inside the grain silo to accurately collect gas at that point. In one embodiment, the sampling probe 100 is made of materials with high corrosion resistance and low environmental pollution, such as stainless steel, glass, or ceramic. No specific material is limited for the sampling probe 100.

[0047] The extraction tube 200 is connected to the sampling probe 100 and is used to transport gas. In one embodiment, the extraction tube 200 is configured as a flexible tube. The flexible tube can be made of inert materials such as polytetrafluoroethylene, polypropylene, or polyvinyl chloride to avoid chemical reactions with the gas and gas corrosion. No specific limitations are placed on the material of the flexible tube. Of course, in other embodiments, the extraction tube 200 can also be configured as a stainless steel tube, glass tube, or composite tube; no limitations are placed on the extraction tube 200. Thus, configuring the extraction tube 200 as a flexible tube reduces airflow disturbance and improves sampling accuracy; furthermore, the flexible tube offers high flexibility and durability, improving the ease of use and service life of the gas sampling assembly.

[0048] A sampling box 300 is located outside the grain silo and has a receiving cavity. A sampling valve 340 is located in the receiving cavity and connected to the extraction pipe 200 to control the gas flow direction. In one embodiment, one end of the extraction pipe 200 extends into the receiving cavity to connect with one end of the sampling valve 340, and the sampling box 300 provides temporary storage space for the sampled gas. Further, in one embodiment, the other end of the sampling valve 340 is used to connect to a gas detection device. The gas detection device can be a manual pump-suction gas detector or an automatic pump-suction gas detection system, etc., without specific limitations. The opening and closing of the sampling valve 340 can control the gas flow direction; that is, when the sampling valve 340 is open, it connects the gas detection device and the extraction pipe 200 to guide the gas into the gas detection device; when the sampling valve 340 is closed, it prevents the gas from entering the gas detection device. When it is necessary to sample the gas in the grain silo, the sampling valve 340 is opened, the gas detection device is activated, and under the action of the gas detection device, the gas in the grain silo will pass through the sampling probe 100 and the extraction pipe 200 in sequence into the sampling box 300, and then enter the gas detection device through the sampling valve 340 to complete the sampling.

[0049] The technical solution of this utility model involves sampling gas within a grain silo using a gas sampling assembly. The gas sampling assembly includes a sampling probe 100, an extraction pipe 200, a sampling box 300, and a sampling valve 340. The sampling probe 100 is located inside the grain silo; the extraction pipe 200 is connected to the sampling probe 100; the sampling box 300 is located outside the grain silo and has a receiving cavity; the sampling valve 340 is located in the receiving cavity and connected to the extraction pipe 200. Compared to the manual sampling method in the prior art, this utility model provides a gas sampling assembly that allows sampling by placing the sampling probe 100 inside the grain silo and connecting the sampling valve 340 and the sampling probe 100 through the extraction pipe 200. This avoids operators entering the grain silo, improving the safety of gas sampling within the grain silo and thus enhancing the safety of grain storage operations.

[0050] Please see Figure 1 and Figure 2 In one embodiment, a plurality of sampling probes 100 are provided, and the plurality of sampling probes 100 are evenly distributed in the grain silo.

[0051] Specifically, in one embodiment, five sampling probes 100 are provided, evenly distributed within the grain silo to sample gas at different locations within the silo. Further, in one embodiment, five extraction pipes 200 are provided, with each sampling probe 100 connected to one extraction pipe 200. Of course, in other embodiments, only one or more sampling probes 100 and extraction pipes 200 may be provided, with a one-to-one correspondence between the extraction pipes 200 and sampling probes 100. The specific number of sampling probes 100 and extraction pipes 200 is not limited here.

[0052] Please see Figure 4In one embodiment, the sampling valve 340 includes multiple needle valves 342 and multiple connectors 341, with each needle valve 342 connected to two connectors 341. Specifically, in one embodiment, the sampling valve 340 includes five needle valves 342 and ten connectors 341, with each needle valve 342 connected to two oppositely arranged connectors 341. Five suction pipes 200 are respectively connected one-to-one to the five connectors 341 located on the same side of the needle valve 342, and the five connectors 341 located on the other side of the needle valve 342 are used for connecting to a gas detection device. In one embodiment, both the connectors 341 and the needle valves 342 are threaded, and the connectors 341 and the needle valves 342 are connected by threads, resulting in a tight connection, simple structure, and easy assembly and disassembly. Of course, in other embodiments, the connectors 341 and the needle valves 342 can also be tightly connected by crimping, welding, or gluing. Here, the connection method of the connectors 341 and the needle valves 342 is not limited. Furthermore, in one embodiment, connector 341 is configured as a stainless steel connector 341, and needle valve 342 is configured as a stainless steel needle valve 342 to ensure the service life of sampling valve 340. Of course, in other embodiments, connector 341 can also be configured as an alloy connector 341 or a plastic connector 341, etc., which have better corrosion resistance, and needle valve 342 can be correspondingly configured as an alloy needle valve 342 or a plastic needle valve 342, etc. Here, no specific limitations are placed on connector 341 and needle valve 342. Thus, by opening the needle valve 342, the two opposing connectors 341 can be connected, thereby connecting the suction pipe 200 and the gas detection device; by closing the needle valve 342, the two opposing connectors 341 can be blocked, thereby blocking the suction pipe 200 and the gas detection device.

[0053] The technical solution of this utility model embodiment achieves multi-point and comprehensive sampling of the gas in the grain silo by evenly distributing the sampling probes 100 within the silo, thereby improving the working efficiency of the gas sampling assembly. Each sampling probe 100 is connected to a corresponding connector 341 and needle valve 342 via a suction pipe 200. The needle valve 342 can precisely control the on / off state of the two connectors 341 and the gas flow rate, improving the accuracy and flexibility of the sampling valve 340, and thus improving the accuracy and usability of the gas sampling assembly.

[0054] In one embodiment, the gas sampling assembly further includes a return gas pipe (not shown in the figure), one end of which extends into the grain silo, and the other end of which is connected to the sampling valve 340 to return excess gas to the grain silo.

[0055] Specifically, in one embodiment, a return gas pipe is provided, with one end of the return gas pipe placed inside the grain silo and the other end extending into the receiving cavity to connect with the sampling valve 340. Please refer to [link to relevant documentation]. Figure 4In one embodiment, the sampling valve 340 includes six needle valves 342 and twelve connectors 341. One needle valve 342 and two connectors 341 are used to connect the return gas pipe and the gas detection device and control the on / off state of the return gas pipe and the gas detection device. Of course, in other embodiments, multiple return gas pipes may be provided, and the number of needle valves 342 and connectors 341 can be flexibly set according to the number of return gas pipes and extraction pipes 200. Here, the number of return gas pipes, needle valves 342, and connectors 341 is not limited. In one embodiment, the structure and material of the return gas pipe are exactly the same as those of the extraction pipe 200, and will not be described in detail here.

[0056] The technical solution of this utility model embodiment, by setting up a return gas pipe, can send excess gas back to the grain silo, preventing gas leakage that could pollute the environment or harm human health. The return gas pipe also prevents the gas detection device from being damaged due to excessive pressure, improving the reliability and safety of the gas sampling components, and further enhancing the safety of grain storage operations.

[0057] Please see Figure 1 and Figure 3 The gas sampling assembly also includes a protective tube 400, which is sleeved on the outer periphery of the extraction tube 200. One end of the protective tube 400 is connected to the sampling box 300, and the other end of the protective tube 400 extends into the grain silo.

[0058] In one embodiment, the protective pipe 400 is fixed to the wall of the grain silo and is sleeved around the outer periphery of all the exhaust pipes 200 and return pipes to protect them. The material of the protective pipe 400 can be stainless steel, aluminum alloy, polyvinyl chloride or polyethylene, etc., which have good strength, corrosion resistance and waterproof properties. Here, no specific material is limited for the protective pipe 400.

[0059] The technical solution of this utility model embodiment protects the extraction pipe 200 and the return pipe by providing a protective tube 400. On the one hand, the protective tube 400 can isolate external contaminants, preventing the extraction pipe 200 and the return pipe from being invaded by contaminants, and can also prevent the extraction pipe 200 and the return pipe from being damaged by external forces, thereby improving the service life of the gas sampling assembly. On the other hand, the protective tube 400 can support and position the extraction pipe 200 and the return pipe, ensuring their stability and ensuring the normal use of the gas sampling assembly.

[0060] Please see Figure 3 and Figure 4 In one embodiment, the sampling box 300 includes a box body 310, a door 320, and a fixed crossbeam 330.

[0061] In one embodiment, the box body 310 is fixed to the wall of the grain silo. The box body 310 has a receiving cavity and a first opening communicating with the receiving cavity. A fixed crossbeam 330 is disposed in the receiving cavity, and a door 320 is movably disposed in the first opening. Specifically, in one embodiment, the door 320 is movably installed in the first opening via a hinge. Of course, in other embodiments, the door 320 can also be movably installed in the first opening via a pin or other means, and no specific limitation is made here. In one embodiment, the sampling valve 340 is disposed on the side of the fixed crossbeam 330 facing the first opening, and the switch of the needle valve 342 faces the first opening. Specifically, in one embodiment, the sampling valve 340 and the fixed crossbeam 330 are fixedly connected by welding. Of course, in other embodiments, the sampling valve 340 and the fixed crossbeam 330 can also be connected by screws, snaps, or adhesives, and no specific limitation is made here. In one embodiment, the housing 310 is further provided with a second opening communicating with the receiving cavity. Both the extraction pipe 200 and the return pipe extend into the receiving cavity through the second opening, and the protective pipe 400 is connected to the housing 310 at the second opening. The sampling box 300 can be made of materials with good strength, corrosion resistance, and waterproofing, such as stainless steel, aluminum alloy, polyvinyl chloride, or polyethylene. No specific material is limited for the sampling box 300.

[0062] In the technical solution of this utility model embodiment, the sampling box 300 provides storage space for the sampled gas, preventing gas leakage and improving the safety of the gas sampling assembly. The sampling valve 340 is fixed to the fixed crossbeam 330, improving the installation stability of the sampling valve 340. The box body 310 and the door 320 protect the sampling valve 340, improving the service life of the gas sampling assembly; and the rotatable connection between the box body 310 and the door 320 facilitates opening the first opening to operate the sampling valve 340, improving the ease of use of the gas sampling assembly.

[0063] This utility model also proposes a gas detection device, including the gas sampling components of the above embodiments. The specific structure of the gas sampling components is as described in the above embodiments. Since this gas detection device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0064] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A gas sampling assembly for sampling gas within a grain silo, characterized in that, include: A sampling probe is installed inside the grain silo; The suction tube is connected to the sampling probe; A sampling box, located outside the grain silo and equipped with a receiving cavity; and, A sampling valve is located in the receiving cavity and connected to the extraction pipe.

2. The gas sampling assembly as described in claim 1, characterized in that, The sampling probes are provided in multiple quantities and are evenly distributed within the grain silo.

3. The gas sampling assembly as described in claim 2, characterized in that, The sampling valve includes multiple needle valves and multiple connectors, each needle valve being connected to two connectors; and, The suction tubes are provided in multiple ways, and each suction tube is connected to a connector and a sampling probe.

4. The gas sampling assembly as described in claim 3, characterized in that, The connector and the needle valve are connected by threads.

5. The gas sampling assembly as described in claim 4, characterized in that, The connector is configured as a stainless steel connector; and / or, The needle valve is configured as a stainless steel needle valve.

6. The gas sampling assembly as described in claim 1, characterized in that, The gas sampling assembly also includes: The return air pipe extends into the grain silo at one end, and the other end of the return air pipe is connected to the sampling valve.

7. The gas sampling assembly as described in claim 6, characterized in that, The extraction pipe is configured as a flexible pipe; and / or, The return air pipe is configured as a flexible pipe.

8. The gas sampling assembly as described in claim 1, characterized in that, The gas sampling assembly also includes: A protective tube is fitted around the outer periphery of the extraction tube. One end of the protective tube is connected to the sampling box, and the other end of the protective tube extends into the grain silo.

9. The gas sampling assembly as claimed in claim 1, characterized in that, The sampling box includes: The housing has the receiving cavity and a first opening communicating with the receiving cavity; The door body is movably disposed at the first opening; and, A fixed crossbeam is disposed within the receiving cavity, and the sampling valve is fixed to the fixed crossbeam.

10. A gas detection device, comprising a gas sampling component as described in any one of claims 1 to 9.

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