A pipeline gas detection assembly

Abstract

This invention discloses a pipeline gas detection assembly, comprising: a pipeline body with connectors at both ends for connection to external pipelines; a gas guide hole located inside the pipeline body, with both ends penetrating the inner wall of the pipeline body; a threaded connection groove fixed to the upper surface of the pipeline body and communicating with the interior of the gas guide hole; and a detection main pipe detachably installed on the threaded connection groove, with a connecting pipe for connecting a gas detector provided on the side wall of the detection main pipe. By incorporating the detection main pipe, gas guide hole, adjusting rod, sealing plate, connecting pipe, and adjusting assembly, this invention ensures that gas transmission remains unaffected during replacement, greatly guaranteeing the stability of gas transmission. Furthermore, during gas detection, it effectively guides some of the gas in the pipeline body towards the gas detector, ensuring gas renewal at the gas detector and improving the accuracy of the detection results.

Description

Technical Field

[0001] This invention specifically relates to a pipeline gas detection component. Background Technology

[0002] In the production, assembly, and off-line testing of power battery packs for new energy vehicles, the active safety protection and long-term reliability of the battery pack are the core issues that the industry focuses on. In order to fundamentally prevent condensation inside the pack caused by changes in ambient humidity, as well as the risk of fire and explosion caused by thermal runaway of the cells, the industry usually uses the inertness and drying properties of nitrogen to create and maintain a dry and oxygen-free microenvironment inside the battery pack. This can effectively inhibit moisture erosion and reduce the probability of thermal runaway. In order to ensure that the nitrogen replacement effect and sealing and pressure holding performance meet the process specifications, it is necessary to monitor the key parameters of the gas being transported in real time in the circuit, such as residual oxygen concentration, pipeline pressure, and temperature.

[0003] Currently, when installing such detectors on gas pipelines, the common practice is to directly insert the sensor probe into the center of the pipe. While this achieves good response speed, the high nitrogen flow rate and strong impact during rapid nitrogen filling cause the probe to be subjected to long-term wind erosion. This not only exacerbates the risk of accuracy drift and physical damage, but the probe inserted into the center of the pipe also obstructs the airflow. To avoid probe erosion, some methods involve creating vertical blind detection holes in the sidewall of the pipeline and installing the sensor at the end of the hole, relying on gas diffusion into the hole to complete the detection. However, for high-speed axially flowing nitrogen, the airflow is difficult to actively deflect and enter the hole when passing through the vertical hole, causing the gas renewal in the hole to almost depend on molecular diffusion, affecting the detection results. Furthermore, both of these installation methods require interrupting the gas supply to the pipeline section when the sensor needs periodic calibration, replacement due to failure, or cleaning and maintenance, which can affect production. Therefore, we propose a pipeline gas detection component. Summary of the Invention

[0004] The purpose of this invention is to provide a pipeline gas detection component to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pipeline gas detection component, comprising:

[0006] The pipe body has connectors at both ends for connecting to external pipelines;

[0007] An air guide hole is opened inside the pipe body, and both ends of the air guide hole penetrate the inner wall of the pipe body;

[0008] The threaded connection groove is fixed to the upper surface of the pipe body and communicates with the inside of the air guide hole;

[0009] The detection main tube is detachably installed on the threaded connection groove, and the side wall of the detection main tube is provided with a connecting tube for connecting to the gas detector;

[0010] An adjusting rod is connected to the middle of the inner side of the detection tube, and the lower end of the adjusting rod has a sealing plate;

[0011] An adjustment assembly, located at the top of the detection tube to cooperate with an adjustment rod, is used to seal the end of the detection tube with a sealing plate during gas detector assembly.

[0012] Preferably, the air vent is an inverted "V" shape.

[0013] Preferably, the gas detector is at least one of an oxygen sensor, a temperature and humidity sensor, and a pressure sensor.

[0014] Preferably, the adjustment assembly includes an adjustment sleeve, an adjustment groove, and an elastic structure. The adjustment sleeve is movably fitted onto the detection main tube, and the adjustment sleeve is fixed to the adjustment rod. The inner wall of the adjustment sleeve has an adjustment groove that cooperates with the guide protrusion on the outer wall of the detection main tube. The outer wall of the adjustment rod has an elastic structure that pushes it to move upward.

[0015] Preferably, the adjusting groove is L-shaped, and there are two adjusting grooves along the circumference of the adjusting sleeve.

[0016] Preferably, the elastic structure includes an assembly groove, a spring, a sealing baffle, and a limiting groove. The sealing baffle is fixed to the outer wall of the adjusting rod, the inner wall of the detection main tube is fixed with an assembly groove, and the inner wall of the assembly groove is provided with a sealing ring that contacts the adjusting rod. The inner side of the assembly groove has a spring that abuts against the sealing baffle. The inner wall of the top end of the detection main tube is bent inward and downward to form a limiting groove to block the movement of the sealing baffle.

[0017] Preferably, the upper and lower surfaces of the sealing baffle are provided with sealing grooves that mate with the ends of the assembly groove or the limiting groove.

[0018] Preferably, the lower end of the outer surface of the main detection tube has an external thread that mates with the threaded connection groove, a sealing block that mates with the end of the threaded connection groove is fixed in the middle of the outer surface of the main detection tube, and a sealing gasket is provided on the inner top of the sealing block.

[0019] Preferably, four connecting pipes are symmetrically arranged in pairs along the axial direction of the main detection pipe.

[0020] Preferably, a heating film is provided on the outer surface of the pipe body, and the outer surface of the heating film is provided with heat insulation cotton.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention, by incorporating a detection main pipe, a gas guide hole, an adjusting rod, a sealing plate, a connecting pipe, and adjusting components, avoids the need to disconnect the gas transmission inside the pipeline body when replacing sensors, as is required in traditional methods. This ensures uninterrupted gas transmission during replacement, greatly guaranteeing gas transmission stability and improving maintenance and installation efficiency. Furthermore, during gas detection, it effectively guides a portion of the gas within the pipeline body towards the gas detector, preventing the detector from being directly inserted into the center of the pipeline body, which could cause wind erosion damage. Additionally, installing the detector through vertical holes in the pipe wall results in poor contact between the detector and the flowing gas, affecting detection results. This device effectively guides a portion of the gas within the pipeline into the gas detector for detection, significantly reducing damage to the detector and ensuring gas renewal at the detector, thus guaranteeing accurate detection results. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the pipe body structure of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the detection main tube of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the detection main tube of the present invention;

[0027] Figure 5 For the present invention Figure 3 A magnified structural diagram at point A;

[0028] Figure 6 This is a schematic cross-sectional view of the adjusting sleeve structure of the present invention;

[0029] Figure 7 This is a schematic diagram illustrating the connection effect between the detection main tube and the gas detector of the present invention.

[0030] In the diagram: 1. Pipe body; 101. Heating film; 2. Connector; 3. Threaded connection groove; 4. Inspection main pipe; 41. Sealing block; 42. External thread; 5. Air vent; 6. Adjusting rod; 7. Sealing plate; 71. Adjusting sleeve; 711. Adjusting groove; 72. Assembly groove; 73. Spring; 74. Sealing baffle; 75. Limiting groove; 76. Guide protrusion; 8. Connecting pipe. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-7 The present invention provides a technical solution: a pipeline gas detection component, comprising:

[0033] Pipe body 1, with connectors 2 at both ends for connecting to external pipelines;

[0034] The air guide hole 5 is located inside the pipe body 1, and both ends of the air guide hole 5 penetrate the inner wall of the pipe body 1.

[0035] The threaded connection groove 3 is fixed to the upper surface of the pipe body 1 and is connected to the inside of the air guide hole 5;

[0036] The detection main tube 4 is detachably installed on the threaded connection groove 3, and the side wall of the detection main tube 4 is provided with a connecting tube 8 for connecting to the gas detector;

[0037] Adjusting rod 6 is connected to the middle of the inner side of the detection main tube 4, and the lower end of adjusting rod 6 has a sealing plate 7;

[0038] An adjustment assembly is located at the top of the detection tube 4 to cooperate with the adjustment rod 6. When assembling the gas detector, the adjustment assembly is used to seal the end of the detection tube 4 with the sealing plate 7.

[0039] This invention utilizes air guide holes 5 penetrating the inner wall of the pipe body 1 at both ends to actively guide a portion of the gas flowing in the main pipe to the inside of the detection main pipe 4. This allows the gas detector installed on the connecting pipe 8 to fully contact the flowing gas, avoiding the high-speed airflow erosion experienced by the sensor directly inserted into the center of the pipe body 1, and overcoming the detection lag problem caused by the flow dead zone when installing the sensor in a vertical blind hole in the pipe wall. A balance is achieved between protecting the sensing element and ensuring real-time detection. By setting an adjusting rod 6 and a sealing plate 7 driven by an adjusting component in the middle of the inner side of the detection main pipe 4, when replacing or maintaining the gas detector on the connecting pipe 8, the sealing plate 7 can be blocked at the end of the detection main pipe 4 by operating the adjusting component, cutting off the gas connection between the main pipe and the detection main pipe 4. This enables online maintenance without interrupting the gas supply in the pipe body 1, significantly improving the continuous operation capability and maintenance convenience of the vehicle-mounted nitrogen system or production line equipment.

[0040] Preferably, the air guide hole 5 is an inverted "V" shape;

[0041] The orifice on the flow-facing side can effectively capture the gas flow pressure and guide the gas into the detection main pipe 4; the orifice on the back flow side is in a relatively low-pressure area, which is conducive to the gas flowing back from the detection main pipe 4 to the pipe body 1. This structure utilizes the flow energy within the pipe body 1 itself to facilitate the formation of a stable pressure difference at both ends of the gas guide hole 5, driving the gas flow and ensuring that the measured value of the gas detector is highly synchronized with the gas state in the main pipe.

[0042] Preferably, the gas detector is at least one of an oxygen sensor, a temperature and humidity sensor, and a pressure sensor;

[0043] In the application scenario of nitrogen delivery to automotive battery packs, oxygen sensors are used to monitor in real time whether the purity of nitrogen entering the battery pack meets the concentration requirement of not less than 95%; temperature and humidity sensors are used to verify the actual control effect of dry nitrogen on the humidity environment inside the battery pack; and pressure sensors are used to monitor pipeline pressure and assist in judging the airtightness of the battery pack. The combination of the above sensing elements can comprehensively cover the monitoring needs of the nitrogen active protection system for key gas parameters, providing a reliable data foundation for the system's fault self-diagnosis and airtightness detection functions.

[0044] Preferably, the adjustment assembly includes an adjustment sleeve 71, an adjustment groove 711, and an elastic structure. The adjustment sleeve 71 is movably fitted onto the detection tube 4, and the adjustment sleeve 71 is fixed to the adjustment rod 6. The inner wall of the adjustment sleeve 71 is provided with an adjustment groove 711 that cooperates with the guide protrusion 76 on the outer wall of the detection tube 4. The outer wall of the adjustment rod 6 has an elastic structure that pushes it to move upward.

[0045] The system allows operators to easily switch the sealing plate 7 between the sealing and open positions by simply rotating or pressing the adjusting sleeve 71, via the adjusting rod 6. This eliminates the need for external tools, enabling on / off control of the air circuit during online maintenance. The system is intuitive, convenient, compact, and reliable.

[0046] Preferably, the adjusting groove 711 is L-shaped, and there are two adjusting grooves 711 along the circumference of the adjusting sleeve 71;

[0047] The L-shaped groove guides the adjustment rod 6 to move by rotating the adjustment sleeve 71, allowing the guide protrusion 76 to slide along the circumferential part of the adjustment groove 711 and then move along the vertical part in the height direction, thereby unlocking the device. The path guidance method of the L-shaped groove can effectively prevent malfunctions in non-operational situations, ensuring that the sealing plate 7 can be stably maintained in the predetermined position in normal testing or sealing maintenance states, thus improving the operational safety and reliability of the device.

[0048] Preferably, the elastic structure includes an assembly groove 72, a spring 73, a sealing baffle 74, and a limiting groove 75. The sealing baffle 74 is fixed to the outer wall of the adjusting rod 6, the inner wall of the detection main tube 4 is fixed with an assembly groove 72, and the inner wall of the assembly groove 72 is provided with a sealing ring that contacts the adjusting rod 6. The inner side of the assembly groove 72 has a spring 73 that abuts against the sealing baffle 74. The inner wall of the top end of the detection main tube 4 is bent inward and downward to form a limiting groove 75 to block the movement of the sealing baffle 74.

[0049] When the gas detector needs to be replaced, after the operating adjustment component is unlocked, the elastic potential energy stored in the spring 73 is released, pushing the sealing baffle 74 and the adjusting rod 6 to move automatically upward until the sealing baffle 74 abuts against the limiting groove 75. At the same time, the sealing plate 7 accurately reaches the sealing position and maintains a stable clamping force, realizing automatic sealing and positioning. The sealing ring set on the inner wall of the assembly groove 72 ensures the dynamic sealing performance at the through point of the adjusting rod 6, preventing gas from leaking along the outer wall of the adjusting rod 6.

[0050] Preferably, the upper and lower surfaces of the sealing baffle 74 are provided with sealing grooves that cooperate with the ends of the assembly groove 72 or the limiting groove 75;

[0051] The upper surface sealing groove provides a surface sealing effect when the sealing baffle 74 and the limiting groove 75 abut, enhancing the airtight reliability of the sealing plate 7 when it is in a closed and pressure-holding state; the lower surface sealing groove ensures the sealing baffle 74 fits and seals with the end face of the assembly groove 72 in the normal open state, preventing gas from escaping from the micro gaps in the mating surface. The design of the double-sided sealing structure further reduces the risk of gas leakage from the detection main pipe 4, ensuring the airtight integrity of the system under long-term vehicle operation conditions.

[0052] Preferably, the lower end of the outer surface of the detection tube 4 has an external thread 42 that mates with the threaded connection groove 3, and a sealing block 41 that mates with the end of the threaded connection groove 3 is fixed in the middle of the outer surface of the detection tube 4, and a sealing gasket is provided on the top inner side of the sealing block 41.

[0053] This facilitates the disassembly and maintenance of the main inspection tube 4 in the later stages.

[0054] Preferably, four connecting pipes 8 are symmetrically arranged in pairs along the axis of the detection main pipe 4;

[0055] This allows a single detection main pipe 4 to integrate multiple gas detectors, such as oxygen sensors, temperature and humidity sensors, air pressure sensors, and their redundant spare parts. When installation is not required, the connecting pipe 8 can be sealed with the existing threaded sealing cap.

[0056] Preferably, a heating film 101 is provided on the outer surface of the pipe body 1, and the outer surface of the heating film 101 is provided with heat insulation cotton;

[0057] To facilitate the maintenance of a stable pipe wall temperature during nitrogen transport.

[0058] The working principle and usage process of this invention are as follows: In use, the detection main tube 4 and the threaded connection groove 3 are connected via external threads 42. At this time, the sealing block 41 abuts against the end of the threaded connection groove 3, and a sealing gasket is placed between them for sealing. The gas detector is installed onto the detection main tube 4 via the connecting pipe 8. When gas is transmitted through the pipe body 1, the gas is guided into the inside of the detection main tube 4 through the air guide hole 5, so that the gas flows into the gas detector at the connecting pipe 8, and then flows back to the inside of the pipe body 1 through one end of the air guide hole 5, thus realizing the gas... For flow detection, when it is necessary to disassemble or assemble the gas detector, the adjusting sleeve 71 can be rotated so that the guide protrusion 76 slides into the lower end of the vertical part along the height direction of the horizontal part arranged circumferentially along the adjusting groove 711. At this time, the elastic potential energy stored in the spring 73 is released, pushing the sealing baffle 74 to move upward to contact the limiting groove 75, thereby driving the adjusting rod 6 and the sealing plate 7 to rise. The sealing plate 7 seals the lower end of the detection main pipe 4, so that the gas does not flow between the pipeline body 1 and the inside of the detection main pipe 4, thereby enabling the gas detector on the connecting pipe 8 to be disassembled and replaced.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipeline gas detection assembly, characterized in that, include: The pipe body (1) has connectors (2) at both ends for connecting to external pipelines. An air guide hole (5) is opened inside the pipe body (1), and both ends of the air guide hole (5) penetrate the inner wall of the pipe body (1). The threaded connection groove (3) is fixed to the upper surface of the pipe body (1) and is connected to the inside of the air guide hole (5); The detection main tube (4) is detachably installed on the threaded connection groove (3), and the side wall of the detection main tube (4) is provided with a connecting tube (8) for connecting the gas detector. An adjusting rod (6) is connected to the inner middle of the detection tube (4), and the lower end of the adjusting rod (6) has a sealing plate (7). An adjustment assembly is provided at the top of the detection tube (4) to cooperate with the adjustment rod (6) so that when the gas detector is assembled, the sealing plate (7) can be sealed to the end of the detection tube (4) by the adjustment assembly.

2. The pipeline gas detection assembly according to claim 1, characterized in that: The air vent (5) is an inverted "V" shape.

3. The pipeline gas detection assembly according to claim 1, characterized in that: The gas detector is at least one of an oxygen sensor, a temperature and humidity sensor, and a pressure sensor.

4. The pipeline gas detection assembly according to claim 1, characterized in that: The adjustment assembly includes an adjustment sleeve (71), an adjustment groove (711), and an elastic structure. The adjustment sleeve (71) is movably fitted onto the detection main tube (4), and the adjustment sleeve (71) is fixed to the adjustment rod (6). The inner wall of the adjustment sleeve (71) is provided with an adjustment groove (711) that cooperates with the guide protrusion (76) on the outer wall of the detection main tube (4). The outer wall of the adjustment rod (6) has an elastic structure that pushes it to move upward.

5. A pipeline gas detection assembly according to claim 4, characterized in that: The adjustment groove (711) is "L" shaped, and there are two adjustment grooves (711) arranged around the adjustment sleeve (71).

6. A pipeline gas detection assembly according to claim 4, characterized in that: The elastic structure includes an assembly groove (72), a spring (73), a sealing baffle (74), and a limiting groove (75). The sealing baffle (74) is fixed to the outer wall of the adjusting rod (6). The inner wall of the detection main tube (4) is fixed with an assembly groove (72), and the inner wall of the assembly groove (72) is provided with a sealing ring that contacts the adjusting rod (6). The inner side of the assembly groove (72) has a spring (73) that abuts against the sealing baffle (74). The inner wall of the top of the detection main tube (4) is bent inward and downward to form a limiting groove (75) to block the movement of the sealing baffle (74).

7. A pipeline gas detection assembly according to claim 6, characterized in that: The sealing baffle (74) has sealing grooves on both its upper and lower surfaces that cooperate with the end of the assembly groove (72) or the limiting groove (75).

8. A pipeline gas detection assembly according to claim 1, characterized in that: The lower end of the outer surface of the detection tube (4) has an external thread (42) that mates with the threaded connection groove (3). A sealing block (41) that mates with the end of the threaded connection groove (3) is fixed in the middle of the outer surface of the detection tube (4), and a sealing gasket is provided on the inner top of the sealing block (41).

9. A pipeline gas detection assembly according to claim 1, characterized in that: The connecting pipe (8) is arranged symmetrically in pairs along the axis of the detection main pipe (4).

10. A pipeline gas detection assembly according to claim 1, characterized in that: The outer surface of the pipe body (1) is provided with a heating film (101), and the outer surface of the heating film (101) is provided with heat insulation cotton.

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