Heat conduction type hydrogen analyzer

Abstract

The utility model discloses a thermal conductivity type hydrogen analyzer which comprises a hydrogen conveying pipeline and hydrogen analysis equipment, the hydrogen conveying pipeline is connected with a shunting pipeline penetrating through the hydrogen analysis equipment, and the hydrogen analysis equipment is internally connected with a sealed detection box; a gas inlet cavity, a stable detection cavity and a backflow cavity which are communicated with one another are sequentially formed in the sealed detection box from front to back, a top plate of the hydrogen analysis equipment is connected with a thermal conductivity type analyzer, the thermal conductivity type analyzer is connected with a sensing module extending into the stable detection cavity, and the flow dividing pipeline is connected with a gas inlet pipeline communicated with the gas inlet cavity. And the shunting pipeline is connected with a backflow pipeline communicated with the backflow cavity. Compared with the prior art, the hydrogen analysis device has the advantages that the split-flow hydrogen analysis equipment is arranged in the hydrogen conveying pipeline and is matched with a thermal conductivity type analyzer, so that the analysis accuracy can be ensured while rapid analysis is carried out.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen analysis devices, specifically to a thermal conductivity hydrogen analyzer. Background Technology

[0002] A thermal conductivity hydrogen analyzer is an instrument that uses the differences in thermal conductivity of various gases to perform quantitative analysis of a specific component in a gas mixture. It utilizes the differences in thermal conductivity of various gases and reflects the concentration of the analyzed hydrogen gas by measuring the change in the resistance value of a thermistor.

[0003] However, while thermal conductivity hydrogen analyzers have high detection efficiency, they are particularly susceptible to the effects of hydrogen transport during pipeline delivery, resulting in lower accuracy and an inability to accurately detect hydrogen concentration. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a thermal conductivity hydrogen analyzer with high accuracy for real-time pipeline detection, addressing the shortcomings mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a thermal conductivity hydrogen analyzer, including a hydrogen delivery pipeline and a hydrogen analysis device, wherein the hydrogen delivery pipeline is connected to a diversion pipeline that runs through the hydrogen analysis device, and a sealed detection box is connected inside the hydrogen analysis device, wherein the sealed detection box is provided with an inlet chamber, a stable detection chamber and a reflux chamber that are interconnected from front to back.

[0006] The hydrogen analysis equipment is equipped with a thermal conductivity analyzer connected to its top plate. The thermal conductivity analyzer is connected to a sensing module that extends into the stable detection chamber. The diversion pipe is connected to an inlet pipe that communicates with the inlet chamber. The diversion pipe is also connected to a return pipe that communicates with the return chamber.

[0007] Furthermore, the diversion pipe is equipped with a one-way valve and an electrically controlled valve at both ends of the hydrogen analysis equipment to facilitate the guidance and cut-off of the diversion pipe.

[0008] Furthermore, a first flow control check valve and a second flow control check valve are respectively connected to the air intake pipe and the return pipe, and a wind speed sensor is connected to the bottom of the stable detection chamber to facilitate the control of air intake and exhaust flow.

[0009] Furthermore, a partition plate is provided between the air intake chamber and the stable detection chamber, and multiple inclined guide plates are provided inside the air intake chamber. A first flow stabilizing plate is provided between the partition plate and the sensing module, and the first flow stabilizing plate is provided with multiple first flow stabilizing holes to facilitate flow stabilization operations at the rear end.

[0010] Furthermore, a second flow stabilizing plate is provided between the stable detection chamber and the return chamber. The second flow stabilizing plate is provided with multiple second flow stabilizing holes to facilitate flow stabilization operations at the downstream end.

[0011] Furthermore, the hydrogen analysis equipment is equipped with a sealed maintenance door on the front and an electrical control cabinet body on the rear, facilitating electrical control and maintenance operations.

[0012] The advantages of this thermal conductivity hydrogen analyzer compared to existing technologies are as follows: By setting up a split hydrogen analysis device in the hydrogen delivery pipeline, and in conjunction with the thermal conductivity analyzer, this invention can perform rapid analysis while ensuring the accuracy of the analysis. Attached Figure Description

[0013] Figure 1 This is a first structural schematic diagram of a thermal conductivity hydrogen analyzer according to this utility model.

[0014] Figure 2 This is a schematic diagram of the second structure of a thermal conductivity hydrogen analyzer according to this utility model.

[0015] Figure 3 This is a cross-sectional structural schematic diagram of a thermal conductivity hydrogen analyzer according to this utility model.

[0016] As shown in the figure: 1. Hydrogen delivery pipeline; 2. Hydrogen analysis equipment; 3. Diversion pipeline; 4. Sealed detection box; 5. Divider plate; 6. Inlet chamber; 7. Stable detection chamber; 8. Return chamber; 9. Inlet pipeline; 10. Return pipeline; 11. First flow control check valve; 12. Second flow control check valve; 13. Thermal conductivity analyzer; 14. Sensing module; 15. Inclined guide plate; 16. First flow stabilizer plate; 17. First flow stabilizer orifice; 18. Wind speed sensor; 19. Second flow stabilizer plate; 20. Second flow stabilizer orifice; 21. Check valve; 22. Electrically controlled valve; 23. Sealed maintenance door; 24. Main body of electrical control cabinet. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Combined with appendix Figure 1-3A thermal conductivity hydrogen analyzer includes a hydrogen delivery pipeline 1 and a hydrogen analysis device 2. The hydrogen delivery pipeline 1 is connected to a branch pipe 3 that runs through the hydrogen analysis device 2. A sealed detection box 4 is connected inside the hydrogen analysis device 2. This device is generally suitable for delivering hydrogen with a relatively stable pressure through the hydrogen delivery pipeline 1. The branch pipe 3 is located at both ends of the hydrogen analysis device 2 and is connected to a one-way valve 21 and an electrically controlled valve 22. The sealed detection box 4 has an inlet chamber 6, a stable detection chamber 7, and a return chamber 8 connected from front to back. A sealed maintenance door 23 is connected to the front of the hydrogen analysis device 2, and an electrical control cabinet body 24 is connected to the rear of the hydrogen analysis device 2.

[0019] The hydrogen analysis device 2 has a thermal conductivity analyzer 13 connected to its top plate. The thermal conductivity analyzer 13 is connected to a sensing module 14 extending into the stable detection chamber 7. The diversion pipe 3 is connected to an intake pipe 9 communicating with the intake chamber 6. The diversion pipe 3 is also connected to a return pipe 10 communicating with the return chamber 8. A first flow control check valve 11 and a second flow control check valve 12 are respectively connected to the intake pipe 9 and the return pipe 10. A wind speed sensor 18 is connected to the bottom of the stable detection chamber 7. Therefore, in actual use, the airflow through the intake pipe 9 in conjunction with the first flow control check valve 11 must be less than the airflow through the return pipe 10 in conjunction with the second flow control check valve 12. The two flow control check valves 12 control the airflow, thereby ensuring the stability of the airflow in the stable detection chamber 7 to the greatest extent. When the diversion pipe 3 maintains constant pressure, the inlet and outlet airflow reach a balance, and the internal space can remain stable. This stability is ensured by the thermal conductivity analyzer 13 and the sensing module 14. When the hydrogen content changes, the thermal conductivity analyzer 13 and the sensing module 14 can quickly and stably sense the corresponding changes. This equipment is generally suitable for hydrogen delivery pipes 1 with relatively stable delivery pressure. If the pressure changes, the wind speed sensor 18 will sense it slightly, thereby adjusting the inlet and outlet airflow of the first flow control check valve 11 and the second flow control check valve 12 for adjustment.

[0020] A partition plate 5 is provided between the air intake chamber 6 and the stable detection chamber 7. Multiple inclined guide plates 15 are provided inside the air intake chamber 6. A first flow stabilizer 16 is provided between the partition plate 5 and the sensing module 14. The first flow stabilizer 16 is provided with multiple first flow stabilizing holes 17. The multiple inclined guide plates 15, together with the first flow stabilizer 16, can ensure that the air intake direction can be more stable and prevent direct impact during air intake. A second flow stabilizer 19 is provided between the stable detection chamber 7 and the return chamber 8. The second flow stabilizer 19 is provided with multiple second flow stabilizing holes 20. The second flow stabilizer 19 can maintain a uniform and stable state of air output.

[0021] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A thermal conductivity hydrogen analyzer comprising a hydrogen delivery conduit (1) and a hydrogen analyzer device (2), characterized in that: The hydrogen delivery pipeline (1) is connected with a shunt pipeline (3) penetrating the hydrogen analysis equipment (2), the hydrogen analysis equipment (2) is connected with a sealing detection box (4), the sealing detection box (4) is sequentially provided with an air inlet cavity (6), a stable detection cavity (7) and a reflux cavity (8) from front to back and in communication with each other; The hydrogen analysis equipment (2) is connected with a thermal conductivity analyzer (13) on the top plate, the thermal conductivity analyzer (13) is connected with a sensing module (14) extending into the stable detection cavity (7), the shunt pipeline (3) is connected with an air inlet pipeline (9) in communication with the air inlet cavity (6), and the shunt pipeline (3) is connected with a reflux pipeline (10) in communication with the reflux cavity (8).

2. A thermal conductivity hydrogen analyzer according to claim 1 wherein: The shunt pipeline (3) is connected with a one-way valve (21) and an electric control valve (22) at both ends of the hydrogen analysis equipment (2).

3. A thermal conductivity hydrogen analyzer according to claim 1 wherein: The first flow control one-way valve (11) and the second flow control one-way valve (12) are respectively connected to the air inlet pipeline (9) and the reflux pipeline (10), and the wind speed sensor (18) is connected to the bottom of the stable detection cavity (7).

4. A thermal conductivity hydrogen analyzer according to claim 1 wherein: The air inlet cavity (6) and the stable detection cavity (7) are connected with a partition plate (5), the air inlet cavity (6) is connected with a plurality of inclined guide plates (15), the partition plate (5) and the sensing module (14) are connected with a first flow stabilizing plate (16), and the first flow stabilizing plate (16) is provided with a plurality of first flow stabilizing holes (17).

5. A thermal conductivity hydrogen analyzer according to claim 1 wherein: The stable detection cavity (7) and the reflux cavity (8) are connected with a second flow stabilizing plate (19), and the second flow stabilizing plate (19) is provided with a plurality of second flow stabilizing holes (20).

6. A thermal conductivity hydrogen analyzer according to claim 1 wherein: The hydrogen analysis equipment (2) is connected with a sealing maintenance door (23) on the front side, and the hydrogen analysis equipment (2) is connected with an electric control cabinet body (24) on the rear side.

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