A passive pipeline gas sampling box

Abstract

This utility model belongs to the technical field of gas collection devices, and in particular to a passive pipeline-type gas collection box. It consists of a stainless steel box body, a front cover, a front cover sealing gasket, a gas detection device, a gas collection plate, a gas collection pipe joint, a passive gas collection pipe, a gas collection pipe plug, a rear cover, a rear cover sealing gasket, a compartment partition, a gland, a flange, and a flange gasket. These components are combined to form a gas collection chamber and an electrical chamber. The passive pipeline-type gas collection box is used for gas collection and detection. Its structure is simple and easy to install. After installation, it can achieve unattended operation and continuous gas detection function around the clock, which greatly saves labor costs. Moreover, the gas flows into the collection box and then flows out into the pipeline, which will not cause gas pressure fluctuations in the pipeline. The collection box has no exhaust gas emissions, which meets environmental protection requirements and greatly reduces the safety hazards caused by gas emissions into the atmosphere.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas collection devices, specifically relating to a passive pipeline gas collection box. Background Technology

[0002] Existing pipeline-type gas sampling devices mainly fall into two categories. One type uses a pre-installed gas sampling port on the pipeline, such as... Figure 1 As shown: When gas detection is required, the gas sampling port a is manually opened, and the detection device is used to detect the gas. Another existing pipeline-type gas sampling device has the following specific structure: Figure 2 As shown, it mainly consists of an air pump a, a gas flow meter b, a gas detection device c, and a power supply device d. The air pump a actively extracts gas from the pipeline and delivers it to the gas detection device c through a hose to achieve the gas collection and detection function.

[0003] like Figure 1 The gas sampling device shown requires complete manual labor and cannot achieve automatic gas sampling and detection. In actual use, it is time-consuming and labor-intensive. In addition, gas leakage and pipeline depressurization may occur during the process of opening the gas sampling port, which poses a great safety hazard.

[0004] like Figure 2 The gas collection device shown requires a timer or programmable logic controller to start the gas pump a in actual use to achieve automatic gas collection. This is a rather cumbersome process, and the gas pump a cannot be kept running continuously, making it impossible to achieve continuous detection all day. During the collection process, the gas pump a operates, drawing gas from the pipeline and delivering it to the gas detection device c. After the gas detection is completed, the waste gas is directly discharged into the atmosphere, which does not meet environmental protection requirements and poses a safety hazard. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a passive pipeline-type gas collection box. This collection box can achieve fully automatic, continuous gas collection around the clock, and features zero waste gas emissions, safety, environmental friendliness, and convenient installation.

[0006] Overall Structure and Compartment Division: The passive pipeline gas collection box of this utility model consists of a stainless steel box body, a front hatch cover, a front hatch cover sealing gasket, a gas detection device, a gas collection plate, a gas collection pipe joint, a passive gas collection pipe, a gas collection pipe plug, a rear hatch cover, a rear hatch cover sealing gasket, a compartment partition, a gland, a flange, and a flange gasket. These components are combined to form the gas collection compartment and the electrical compartment.

[0007] Gas Collection Chamber Structure and Function: The gas collection chamber mainly consists of a front cover, a front cover sealing gasket, a gas detection device (front gas detection section), a gas collection plate, a gas collection pipe connector, a passive gas collection pipe, a gas collection pipe plug, and a chamber partition. The passive gas collection pipe is responsible for continuous gas collection. Its inlet end face is larger on the outside and smaller on the inside. This structure increases the gas collection area and improves the gas flow rate, allowing the gas to quickly enter the chamber. The outlet end face consists of two hollow and irregular slots. There is an open gas guide groove in the middle of the outer side of the slots, which facilitates the rapid return of the detected gas to the pipeline. The top of the passive gas collection pipe has a trapezoidal structure, creating a height difference between the inlet and outlet ends, which is beneficial for constructing gas inflow and outflow channels. The gas collection pipe plug is installed at the end of the passive gas collection pipe to prevent gas from escaping into the pipeline. The chamber partition is located in the center of the chamber and is welded to the stainless steel chamber. The gas collection plate features an open, polygonal design with an open top for easy gas outflow. It is secured to the compartment partition with screws and connected to the passive gas collection pipe via a gas sampling pipe connector, enabling gas collection, aggregation, and detection. The gas detection device is installed in the center of the gas collection plate and secured to the compartment partition with screws. The front hatch and front hatch sealing gasket seal the gas collection chamber, providing waterproofing, dustproofing, and preventing gas escape and diffusion.

[0008] Electrical Compartment Structure and Function: The electrical compartment consists of a rear cover, a rear cover sealing gasket, a gas detection device (with rear electrical wiring), a compartment bulkhead, and glands. The compartment bulkhead has openings based on the size and location of the gas detection device, allowing the rear wiring portion of the device to enter the electrical compartment. Simultaneously, the gas detection device's sealing gasket, in conjunction with the compartment bulkhead, isolates the two compartments, ensuring that gas from the gas collection compartment does not escape into the electrical compartment, thus ensuring electrical isolation and enhancing safety. Glands are primarily used for sealing external cable inlets; different specifications and functions of glands can be selected according to requirements.

[0009] Connection component function: The flange, used in conjunction with the flange gasket, is used to tightly connect the pipeline to the passive pipeline gas sampling box, preventing gas leakage within the pipeline. Furthermore, the flange can be manufactured in flat or saddle-shaped forms to expand the applicable range of pipelines. Compared with the prior art, the beneficial effects of this utility model are: The passive pipeline gas collection box is used for gas collection and detection. It has a simple structure and is easy to install. After installation, it can realize unattended operation and continuous gas detection function around the clock, which greatly saves labor costs. Moreover, the gas flows into the collection box and then flows out into the pipeline, which will not cause gas pressure fluctuations in the pipeline. The collection box has no exhaust gas emissions, which meets environmental protection requirements and greatly reduces the safety hazards caused by gas emissions into the atmosphere. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 Schematic diagram of existing gas collection device Figure 1 ; Figure 2 Schematic diagram of existing gas collection device Figure 2 ; Figure 3 This is a three-dimensional structural diagram of a passive pipeline gas collection box according to the present invention; Figure 4 This is a schematic diagram of the planar structure of a passive pipeline gas collection box according to the present invention; Figure 5 This is a cross-sectional structural diagram of a passive pipeline gas collection box according to the present invention; Figure 6 This is a top view of the passive gas sampling pipe of this utility model; Figure 7 This is a three-dimensional view of the passive gas sampling pipe of this utility model; Figure 8 This is a schematic diagram of the overall assembly of a passive pipeline gas collection box according to the present invention; Figure 9 This is a schematic diagram of the gas trajectory of a passive pipeline gas collection box according to the present invention; In the picture: 1. Stainless steel enclosure; 2. Front hatch cover; 3. Front hatch cover gasket; 4. Gas detection device; 5. Gas collection plate; 6. Gas collection pipe connector; 7. Passive gas collection pipe; 8. Gas collection pipe plug; 9. Rear hatch cover; 10. Rear hatch cover gasket; 11. Compartment bulkhead; 12. Gland; 13. Flange; 14. Flange gasket; 15. Gas collection chamber; 16. Electrical compartment. Detailed Implementation

[0011] 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. Example

[0012] like Figure 1-9 As shown; A passive pipeline gas collection box includes a stainless steel box body 1, a front cover 2, a front cover sealing gasket 3, a gas detection device 4, a gas collection plate 5, a gas collection pipe joint 6, a passive gas collection pipe 7, a gas collection pipe plug 8, a rear cover 9, a rear cover sealing gasket 10, a compartment partition 11, a grate 12, a flange 13, and a flange gasket 14.

[0013] In this implementation plan: In order to solve the technical problems existing in the prior art, and considering the actual use, this problem is obviously a real and difficult problem to solve. Therefore, in order to solve this technical problem, a passive pipeline gas collection box is provided on the basis of this.

[0014] like Figure 1-9 As shown in the figure; Based on the above, the passive pipeline gas collection box is assembled from various components to form a gas collection chamber 15 and an electrical chamber 16.

[0015] The gas collection chamber 15 consists of a front cover 2, a front cover sealing gasket 3, a gas detection device 4 with a front gas detection section, a gas collection plate 5, a gas collection pipe connector 6, a passive gas collection pipe 7, a gas collection pipe plug 8, and a chamber partition 11. The passive gas collection pipe 7 has an inlet end face 17 that is larger on the outside and smaller on the inside, and an outlet end face 18 consisting of two hollow and irregular slots with an open gas guide groove in the middle on the outer side of the slots and a trapezoidal structure at the top. The gas collection pipe plug 8 is installed at the end of the passive gas collection pipe 7. The chamber partition 11 is located in the center of the chamber and is welded to the stainless steel chamber 1. The gas collection plate 5 adopts an open polygonal design with an open top, is fixed to the chamber partition 11 with screws, and is connected to the passive gas collection pipe 7 via the gas collection pipe connector 6. The gas detection device 4 is installed in the center of the gas collection plate 5 and is fixed to the chamber partition 11 with screws. The front cover 2 and the front cover sealing gasket 3 seal the gas collection chamber 15.

[0016] The electrical compartment 16 consists of a rear hatch cover 9, a rear hatch cover sealing gasket 10, the electrical wiring part on the back of the gas detection device 4, a compartment partition 11, and a gland 12; the compartment partition 11 has holes according to the size and position of the gas detection device 4; the gland 12 is used for sealing the external cable inlet.

[0017] Flange 13 and flange gasket 14 are used to connect the pipeline to the passive pipeline gas collection box. The flange 13 can be made into a flat type or a saddle shape.

[0018] This collection box is used to achieve fully automatic, continuous gas collection around the clock, with no waste gas emissions during the gas collection process, ensuring gas pressure balance in the pipeline.

[0019] Installation steps: Before installing the gas sampling box, pre-drill the necessary fixing holes and the through holes for the passive gas sampling pipe 7 on the outside of the pipeline, according to the required opening size of the flange 13 of the gas sampling box. Pass the passive gas sampling pipe 7 through the flange gasket 14 and flange 13, and then connect it to the gas collecting plate 5 via the gas sampling pipe connector 6. When fixing, ensure that the top of the inlet face 17 of the passive gas sampling pipe 7 is flush with or slightly protrudes from the top of the gas sampling pipe connector 6. Next, use screws to connect the gas detection device 4 to the compartment partition 11. Then, secure the passive pipeline gas sampling box tightly to the pipeline using flange 13 and flange gasket 14. During installation, ensure that the inlet face 17 of the passive gas sampling pipe 7 faces the wind direction within the pipeline. Finally, introduce the control cable through the gland 12 into the electrical compartment 16 and connect it to the electrical wiring of the gas detection device 4. This completes the installation (the finished state is shown in Figure 8).

[0020] Work process: When the passive pipeline gas sampling box is put into use, as shown in Figure 9, the gas in the pipeline, under its own pressure, quickly enters the gas sampling chamber 15 through the inlet end face 17 of the passive gas sampling pipe 7. The gas entering the sampling chamber is gathered around the gas detection device 4 by the gas collecting plate 5, ensuring that the airflow can fully pass through the gas detection device 4 for comprehensive and accurate gas detection. After detection, the gas enters the external space of the gas collecting plate 5 through the top opening of the gas collecting plate 5, then flows out of the gas sampling chamber 15 through the outlet end face 18 of the passive gas sampling pipe 7, and finally returns to the pipeline, thus ensuring the gas pressure balance within the pipeline.

[0021] In practical applications, a suitable gas detection device 4 can be selected and installed in the collection box according to different detection requirements. At the same time, if the pipeline type changes, flanges 13 of different shapes (flat type or saddle type) can be replaced to ensure that the collection box can be tightly connected to various pipelines and achieve stable gas collection and detection functions.

[0022] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A passive, tube-type gas collection box, characterized by, The passive pipeline gas collection box includes a stainless steel housing (1), a front hatch cover (2), a front hatch cover gasket (3), a gas detection device (4), a gas collection plate (5), a gas collection pipe connector (6), a passive gas collection pipe (7), a gas collection pipe plug (8), a rear hatch cover (9), a rear hatch cover gasket (10), a compartment partition (11), a grate (12), a flange (13), and a flange gasket (14); the passive pipeline gas collection box is assembled from the components to form a gas collection chamber (15) and an electrical chamber (16).

2. A passive pipe-type gas collection box according to claim 1, characterized in that The gas collection chamber (15) consists of a front cover (2), a front cover sealing gasket (3), a gas detection device (4) with a front gas detection section, a gas collection plate (5), a gas collection pipe connector (6), a passive gas collection pipe (7), a gas collection pipe plug (8), and a chamber partition (11).

3. A passive pipe-type gas collection box according to claim 1, wherein The passive gas collection pipe (7) has an inlet end face (17) that is larger on the outside and smaller on the inside, and an outlet end face (18) that consists of two hollow and irregular slots. There is an open gas guide groove in the middle of the outer side of the slot, and the top is a trapezoidal structure. The gas collection pipe plug (8) is installed at the end of the passive gas collection pipe (7).

4. The passive, pipe-type gas collection tank of claim 1, wherein, The compartment partition (11) is located in the center of the box and is welded to the stainless steel box (1); the gas collection plate (5) adopts an open polygonal design with an open top, is fixed to the compartment partition (11) by screws, and is connected to the passive gas collection pipe (7) via the gas collection pipe connector (6).

5. The passive, pipe-type gas collection tank of claim 1, wherein, The gas detection device (4) is installed in the center of the gas collection plate (5) and fixed to the cabin partition (11) by screws; the front cover (2) and the front cover sealing gasket (3) seal the gas collection chamber (15).

6. The passive, pipe-type gas collection tank of claim 1, wherein, The electrical compartment (16) consists of a rear hatch cover (9), a rear hatch cover sealing gasket (10), an electrical wiring section on the back of the gas detection device (4), a compartment partition (11), and a gland (12); the compartment partition (11) has openings according to the size and position of the gas detection device (4); the gland (12) is used for sealing the external cable inlet.

7. A passive pipeline gas collection box according to claim 1, characterized in that, The flange (13) and the flange gasket (14) are used to connect the pipeline and the passive pipeline gas collection box. The flange (13) can be made into a flat type or a saddle shape.

8. A passive pipe-type gas collection tank according to any one of claims 1-7, characterized in that, This collection box is used to achieve fully automatic, continuous gas collection around the clock, with no waste gas emissions during the gas collection process, ensuring gas pressure balance in the pipeline.

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