Multi-point switching sampling device for hydrogen production from coke oven gas

Abstract

The utility model discloses a multi-point switching sampling device for hydrogen production from coke oven gas, and belongs to the technical field of gas sampling. A multi-point switching sampling device for coke oven gas hydrogen production comprises a connecting pipe installed on a hydrogen production pipeline, and further comprises a round pipe rotationally installed on the connecting pipe, a sampling pipe is fixedly connected to the round pipe, a rotating part is arranged on the connecting pipe, and the rotating part is used for driving the sampling pipe to revolve around the axis of the round pipe; by starting the first motor and driving the sampling pipe and the storage shell to revolve around the axis of the circular pipe, different sampling point positions on the same axial section in the hydrogen production pipeline can be switched and adjusted, so that different point positions in the hydrogen production pipeline can be sampled conveniently, hydrogen components in the pipeline can be fed back more comprehensively, and the sampling efficiency of the hydrogen production pipeline is improved. Furthermore, the accuracy of analyzing a gas sample by an operator is ensured, and the production quality of hydrogen is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of gas sampling technology, and in particular to a multi-point switching sampling device for hydrogen production from coke oven gas. Background Technology

[0002] Coke oven gas is a byproduct of the coking process. Its main components include hydrogen, carbon monoxide, methane, and small amounts of carbon dioxide, nitrogen, and other impurities. Because it contains a high proportion of hydrogen, coke oven gas can be used as an important source of raw materials for hydrogen production.

[0003] In the process of producing hydrogen from coke oven gas, it is necessary to use sampling devices to sample and monitor the gas composition at different stages of the process, and send the samples to analytical instruments for composition analysis. This can help operators understand changes in the production process in a timely manner, thereby adjusting operating conditions to optimize the hydrogen production process, which helps to improve production efficiency and ensure hydrogen quality.

[0004] However, current sampling devices typically only allow for single-point sampling. Fluctuations in reaction conditions such as temperature, pressure, and catalyst activity during hydrogen production can affect hydrogen concentration, leading to uneven hydrogen concentrations at different points on the same cross-section of the hydrogen production pipeline. Traditional sampling devices are inconvenient for sampling different points in the hydrogen production pipeline, making it difficult to comprehensively reflect the hydrogen composition in the pipeline. This can affect the accuracy of gas sample analysis by operators and hinder the improvement of hydrogen production quality. Therefore, to solve the above problems, a multi-point switching sampling device for hydrogen production from coke oven gas is provided. Utility Model Content

[0005] The purpose of this invention is to solve the problem that current sampling devices are inconvenient to sample different points in hydrogen production pipelines, which affects the accuracy of gas sample analysis by operators and is not conducive to improving the quality of hydrogen production. Therefore, a multi-point switching sampling device for hydrogen production from coke oven gas is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-point switching sampling device for hydrogen production from coke oven gas includes a connecting pipe installed on a hydrogen production pipeline, and further includes: a circular pipe rotatably mounted on the connecting pipe, wherein a sampling tube is fixedly connected to the circular pipe, and a rotating part is provided on the connecting pipe for driving the sampling tube to revolve around the axis of the circular pipe; a storage shell connected to the gas outlet end of the sampling tube by a locking member, wherein valves are installed at both the storage shell and the gas inlet of the sampling tube, and a suction and discharge part is provided inside the storage shell for changing the internal volume of the storage shell.

[0008] To facilitate sampling at different points in the hydrogen production pipeline, preferably, the rotating part includes a first motor fixedly mounted on the connecting pipe, a toothed ring fixedly connected to the round pipe, and a drive wheel meshing with the toothed ring fixedly connected to the output shaft of the first motor.

[0009] To facilitate quick assembly and disassembly of the storage shell, preferably, the locking component includes a threaded tube fixedly connected to one end of the storage shell, and the sampling tube has a threaded groove, wherein the threaded tube is threaded into the threaded groove, and a sealing assembly is provided in the threaded groove.

[0010] To further improve the sealing between the sampling tube and the storage shell, the sealing assembly includes a sealing ring slidably installed in the screw groove, with a spring fixedly connected to the bottom of the sealing ring, and the end of the spring away from the sealing ring fixedly connected to the inner wall of the screw groove.

[0011] To facilitate the absorption and storage of hydrogen from the hydrogen production pipeline, the absorption and discharge section preferably includes: a piston, slidably connected inside the storage shell, wherein a movable sleeve is connected inside the storage shell via a guide, and one end of the movable sleeve is rotatably connected to the piston; a screw, rotatably connected to the storage shell, wherein the movable sleeve is threadedly connected to the screw, a driving component for driving the screw to rotate is provided on the top of the storage shell, and an exhaust component is provided on the storage shell.

[0012] In order to drive the piston to slide within the storage shell, the drive component further includes a second motor fixedly mounted on the top of the storage shell, wherein the output end of the second motor is fixedly connected to a bevel gear A, and the top end of the screw is fixedly connected to a bevel gear B that meshes with the bevel gear A.

[0013] To guide the movable sleeve, the guide component further includes guide rods fixedly connected to both sides of the movable sleeve, and guide grooves are provided on both sides of the inner wall of the storage shell. A guide block is fixedly connected to one end of the guide rod, and the guide block is longitudinally slidably connected in the guide groove.

[0014] To facilitate the discharge of the stored hydrogen sample, the venting component further includes an vent pipe and a ball valve, the vent pipe being connected to the storage shell and the ball valve being mounted on the vent pipe.

[0015] In order to fix the device on the coke oven gas hydrogen production pipeline, preferably, a flange is fixedly installed on the connecting pipe, and the surface of the flange is provided with multiple mounting holes in a ring shape.

[0016] To control the flow of gas, preferably, the valve on the storage shell is a gate valve, and the valve on the sampling tube is an electric valve.

[0017] Compared with the prior art, this utility model provides a multi-point switching sampling device for hydrogen production from coke oven gas, which has the following advantages:

[0018] 1. This multi-point switching sampling device for hydrogen production from coke oven gas can drive a piston to move up and down by starting a second motor. By controlling the height of the piston's upward movement, the storage volume inside the storage shell can be changed to control the amount of hydrogen sampled, thereby meeting the detection requirements of samples under different sampling amounts. This facilitates better comparative analysis of samples. Furthermore, by driving the piston downward, the hydrogen sample stored inside the storage shell can be automatically discharged, bringing convenience to the sampling and testing work of workers.

[0019] 2. The multi-point switching sampling device for hydrogen production from coke oven gas, through the setting of threaded pipe and screw groove, allows workers to quickly disassemble and assemble the storage shell, so as to facilitate the removal of the storage shell containing the sample and sending it to the analysis instrument for testing. Furthermore, through the setting of sealing ring and spring, the sealing performance at the connection between the sampling pipe and the storage shell can be improved, preventing gas leakage when the storage shell is absorbing hydrogen samples.

[0020] 3. This multi-point switching sampling device for hydrogen production from coke oven gas can change the sampling position of the sampling tube in the hydrogen production pipeline by starting the first motor. This allows for switching and adjustment of different sampling points on the same cross-section in the hydrogen production pipeline, facilitating sampling at different points in the pipeline. This provides a more comprehensive feedback on the hydrogen composition in the pipeline, ensuring the accuracy of gas sample analysis by operators and improving the quality of hydrogen production.

[0021] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention solves the problem that current sampling devices are inconvenient to sample different points in hydrogen production pipelines, which in turn affects the accuracy of gas sample analysis by operators and is not conducive to improving the quality of hydrogen production. Attached Figure Description

[0022] Figure 1 This is a first-view isometric structural diagram of a multi-point switching sampling device for hydrogen production from coke oven gas proposed in this utility model.

[0023] Figure 2 This is a second-view isometric structural diagram of a multi-point switching sampling device for hydrogen production from coke oven gas proposed in this utility model.

[0024] Figure 3 This is a partial isometric structural diagram of a multi-point switching sampling device for hydrogen production from coke oven gas proposed in this utility model.

[0025] Figure 4This is a partial exploded view of a multi-point switching sampling device for hydrogen production from coke oven gas proposed in this utility model;

[0026] Figure 5 This is a cross-sectional view of the storage shell of a multi-point switching sampling device for hydrogen production from coke oven gas proposed in this utility model.

[0027] In the diagram: 1. Connecting pipe; 2. Round pipe; 3. Sampling pipe; 31. First motor; 32. Gear ring; 33. Drive wheel; 4. Storage shell; 41. Threaded pipe; 42. Threaded groove; 43. Sealing ring; 44. Spring; 5. Piston; 51. Second motor; 52. Moving sleeve; 53. Screw; 54. Bevel gear A; 55. Bevel gear B; 56. Guide groove; 57. Guide rod; 58. Guide block; 6. Exhaust pipe; 61. Ball valve; 7. Flange; 71. Mounting hole. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Example:

[0031] Reference Figures 1-5 This utility model provides a multi-point switching sampling device for hydrogen production from coke oven gas, including a connecting pipe 1 installed on the hydrogen production pipeline, and a circular pipe 2 rotatably installed on the connecting pipe 1. The circular pipe 2 and the connecting pipe 1 are interconnected, and a sealing ring is provided at the joint between the circular pipe 2 and the connecting pipe 1 to prevent hydrogen leakage. A sampling pipe 3 is fixedly connected to the circular pipe 2. A rotating part is provided on the connecting pipe 1 to drive the sampling pipe 3 to revolve around the axis of the circular pipe 2. A storage shell 4 is connected to the gas outlet of the sampling pipe 3 by a locking member. Valves are installed at the gas inlets of both the storage shell 4 and the sampling pipe 3. A suction and discharge part is provided inside the storage shell 4 to change the internal volume of the storage shell 4. A transparent window with scale lines is provided on the storage shell 4 to view the sampling status inside the storage shell 4.

[0032] Specifically, during use, the storage volume inside the storage shell 4 can be changed by the suction and discharge section to control the amount of hydrogen sampled, thereby meeting the detection requirements of samples under different sampling amounts. This facilitates better comparative analysis of samples and also makes it easier to automatically discharge the hydrogen sample stored inside the storage shell 4, bringing convenience to the sampling and testing work of workers. The rotating section can drive the sampling tube 3 and the storage shell 4 to revolve around the axis of the circular tube 2, enabling sampling at different points in the hydrogen production pipeline. This allows for a more comprehensive feedback of the hydrogen composition in the pipeline, thereby ensuring the accuracy of gas sample analysis by operators and improving the production quality of hydrogen.

[0033] The rotating part includes a first motor 31 fixedly mounted on the connecting pipe 1, a gear ring 32 fixedly connected to the round pipe 2, and a drive wheel 33 that meshes with the gear ring 32 fixedly connected to the output shaft of the first motor 31.

[0034] Specifically, during use, by starting the first motor 31, the drive wheel 33, the gear ring 32, and the circular tube 2 are driven to rotate. At the same time, the sampling tube 3 and the storage shell 4 revolve around the axis of the circular tube 2. This allows for switching and adjustment of different sampling points on the same cross-section in the hydrogen production pipeline, facilitating sampling at different points in the hydrogen production pipeline. This provides a more comprehensive feedback on the hydrogen composition in the pipeline, ensuring the accuracy of gas sample analysis by operators and improving the quality of hydrogen production.

[0035] The locking component includes a threaded tube 41 fixedly connected to one end of the storage shell 4, and a threaded groove 42 is provided on the sampling tube 3. The threaded tube 41 is threadedly connected to the threaded groove 42, and a sealing assembly is provided in the threaded groove 42.

[0036] Specifically, the threaded tube 41 and the threaded groove 42 facilitate the quick assembly and disassembly of the storage shell 4, making it easy to remove the storage shell 4 containing the sample and send it to the analytical instrument for component analysis, thereby improving work efficiency. Furthermore, the sealing element can also improve the sealing performance of the connection between the sampling tube 3 and the storage shell 4.

[0037] The sealing assembly includes a sealing ring 43 that is slidably installed in the threaded groove 42. A spring 44 is fixedly connected to the bottom of the sealing ring 43, and the end of the spring 44 away from the sealing ring 43 is fixedly connected to the inner wall of the threaded groove 42.

[0038] Specifically, by setting up the sealing ring 43 and the spring 44, when the threaded tube 41 enters the threaded groove 42 and squeezes the sealing ring 43, it simultaneously compresses the spring 44. Through the combined action of the reverse elastic force of the spring 44 and the positive pressure applied by the threaded tube 41, the sealing ring 43 can be made to fit more tightly on the threaded tube 41, which can improve the sealing performance at the connection between the sampling tube 3 and the storage shell 4 and prevent gas leakage when the storage shell 4 absorbs hydrogen samples.

[0039] The suction and discharge section includes: a piston 5, which is slidably connected inside the storage shell 4, wherein a movable sleeve 52 is connected inside the storage shell 4 via a guide member, and one end of the movable sleeve 52 is rotatably connected to the piston 5; a screw 53, which is rotatably connected to the storage shell 4, wherein the movable sleeve 52 is threadedly connected to the screw 53, a driving member for driving the screw 53 to rotate is provided on the top of the storage shell 4, and an exhaust member is provided on the storage shell 4.

[0040] Specifically, during use, the screw 53 is rotated by the drive component, and the moving sleeve 52 drives the piston 5 to move upward or downward under the action of the thread. This facilitates the automatic absorption and storage of hydrogen in the hydrogen production pipeline, thereby improving the sampling convenience for workers. Furthermore, the exhaust component facilitates the discharge of samples stored in the storage shell 4, making it easier to test and analyze the samples.

[0041] The driving component includes a second motor 51 fixedly mounted on the top of the storage shell 4, wherein the output end of the second motor 51 is fixedly connected to a bevel gear A54, and the top end of the screw 53 is fixedly connected to a bevel gear B55 that meshes with the bevel gear A54.

[0042] Specifically, by starting the second motor 51, the output end of the second motor 51 drives two meshing bevel gears A54 and B55 to rotate, and drives the screw 53 to rotate, which can drive the piston 5 to slide inside the storage shell 4.

[0043] In addition, the second motor 51 is an electromagnetic brake motor. Through the built-in electromagnetic brake system, the rotor can be quickly locked when the motor stops, thereby preventing the motor shaft from rotating freely without power, ensuring the fixation of the piston 5 after movement and the stability of hydrogen sampling.

[0044] The guide includes guide rods 57 fixedly connected to both sides of the movable sleeve 52, and guide grooves 56 are provided on both sides of the inner wall of the storage shell 4. One end of the guide rod 57 is fixedly connected to a guide block 58, and the guide block 58 is longitudinally slidably connected in the guide groove 56.

[0045] Specifically, by setting up the guide groove 56, guide rod 57 and guide block 58, the movable sleeve 52 can be guided so that it can only move longitudinally, preventing it from rotating with the screw 53, thereby improving the stability of the piston 5 movement.

[0046] The exhaust system includes an exhaust pipe 6 and a ball valve 61. The exhaust pipe 6 is connected to the storage shell 4, and the ball valve 61 is installed on the exhaust pipe 6.

[0047] Specifically, during use, by opening the ball valve 61 to release the blockage of the exhaust pipe 6, the hydrogen sample stored in the storage shell 4 can be discharged, thus facilitating the worker to analyze the composition of the sample using analytical instruments.

[0048] A flange 7 is fixedly installed on the connecting pipe 1, and the surface of the flange 7 has multiple mounting holes 71 in a ring shape.

[0049] Specifically, by using flange 7 and mounting hole 71, the entire device can be fixedly installed on the coke oven gas hydrogen production pipeline, achieving interconnection with the hydrogen production pipeline and facilitating subsequent sampling and testing of hydrogen.

[0050] The valve on the storage shell 4 is a gate valve, and the valve on the sampling tube 3 is an electric valve. The valve on the storage shell 4 can also be a one-way valve, so that the gas sample can only enter the storage shell 4 in one direction. This allows for flexible control of the flow direction of the hydrogen sample during sampling, making it easier for workers to perform gas sampling.

[0051] During use, the multi-point switching sampling device for hydrogen production from coke oven gas can be fixed at both ends of the connecting pipe 1 on the coke oven gas hydrogen production pipeline by setting the flange 7 and the mounting hole 71, so as to realize the fixation of the device and ensure that the round pipe 2 and the sampling pipe 3 can rotate normally during subsequent sampling. In addition, according to the number of hydrogen production pipelines and the testing requirements, the staff can selectively install the corresponding number of sampling devices as needed.

[0052] During sampling, first open the electric valve on the sampling tube 3 and the gate valve on the storage shell 4. Then start the second motor 51 and drive the two meshing bevel gears A54 and B55 to rotate. At the same time, drive the screw 53 to rotate together, so that the moving sleeve 52 drives the piston 5 to move upward, so that the hydrogen sample in the hydrogen production line enters the storage shell 4. Then close the electric valve on the sampling tube 3 and the gate valve on the storage shell 4. By controlling the movement of the piston 5, the storage volume inside the storage shell 4 can be changed to control the amount of hydrogen sampled, thereby meeting the detection requirements of the sample under different sampling amounts, which is conducive to better comparative analysis of the sample.

[0053] Furthermore, the threaded tube 41 and the threaded groove 42 facilitate workers to quickly disassemble and assemble the storage shell 4, so as to easily remove the storage shell 4 containing the sample and send it to the analysis instrument for testing. At the same time, before the sample is tested, the ball valve 61 can be opened to release the blockage of the exhaust pipe 6, and then the second motor 51 can be started in reverse to drive the piston 5 to move downward, which can facilitate the automatic discharge of the hydrogen sample stored inside the storage shell 4, bringing convenience to the workers' sampling and testing work.

[0054] In addition, after sampling and testing at one point in the hydrogen production pipeline is completed, the storage shell 4 can be reinstalled on the sampling tube 3. Then, by starting the first motor 31, the drive wheel 33, the gear ring 32, and the circular tube 2 are driven to rotate. At the same time, the sampling tube 3 and the storage shell 4 revolve around the axis of the circular tube 2, which can change the sampling position of the sampling tube 3 in the hydrogen production pipeline. This allows for switching and adjustment of different sampling points on the same axial section in the hydrogen production pipeline, facilitating resampling at different points in the hydrogen production pipeline. This provides a more comprehensive feedback on the hydrogen composition in the pipeline, ensuring the accuracy of gas sample analysis by operators and improving the quality of hydrogen production.

[0055] It should be noted that before each sampling, the piston 5 needs to be controlled to reciprocate multiple times to displace the air in the storage shell 4 and sampling tube 3 with hydrogen. After the displacement, the piston 5 can be controlled to move to the bottom of the storage shell 4 to ensure that the hydrogen sample taken later enters the storage shell 4 synchronously as the piston 5 rises.

[0056] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A multi-point switching sampling device for hydrogen production from coke oven gas, comprising a connecting pipe (1) installed on a hydrogen production pipeline, characterized in that, Also include: The circular tube (2) is rotatably mounted on the connecting pipe (1), Wherein, the circular tube (2) is fixedly connected with a sampling pipe (3), the connecting pipe (1) is provided with a rotating part, the rotating part is used for driving the sampling pipe (3) to revolve around the axis of the circular tube (2): The storage shell (4) connected with the sampling pipe (3) through the locking piece, Wherein, the storage shell (4) and the air inlet of the sampling pipe (3) are provided with valves, the storage shell (4) is provided with a suction and exhaust part, and the volume inside the storage shell (4) is changed.

2. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 1, characterized in that, The rotating part includes a first motor (31) fixedly installed on the connecting pipe (1), the circular tube (2) is fixedly connected with a gear ring (32), and the output shaft of the first motor (31) is fixedly connected with a driving wheel (33) meshing with the gear ring (32).

3. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 1, characterized in that, The locking piece includes a threaded pipe (41) fixedly connected at one end of the storage shell (4), and a screw groove (42) is formed in the sampling pipe (3), Wherein, the threaded pipe (41) is screwedly connected in the screw groove (42), and a sealing group is arranged in the screw groove (42).

4. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 3, characterized in that, The sealing group includes a sealing ring (43) slidably installed in the screw groove (42), the bottom of the sealing ring (43) is fixedly connected with a spring (44), and the end, away from the sealing ring (43), of the spring (44) is fixedly connected to the inner wall of the screw groove (42).

5. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 1, characterized in that, The suction and exhaust part includes: A piston (5) is slidably connected in the storage shell (4), Wherein, the storage shell (4) is connected with a moving sleeve (52) through a guide piece, one end of the moving sleeve (52) is rotatably connected to the piston (5); A screw rod (53) is rotatably connected to the storage shell (4), Wherein, the moving sleeve (52) is screwedly connected to the screw rod (53), the top of the storage shell (4) is provided with a driving piece for driving the screw rod (53) to rotate, and the storage shell (4) is provided with an exhaust piece.

6. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 5, characterized in that, The driving piece includes a second motor (51) fixedly installed on the top of the storage shell (4), Wherein, the output end of the second motor (51) is fixedly connected with a bevel gear A (54), and the top end of the screw rod (53) is fixedly connected with a bevel gear B (55) meshing with the bevel gear A (54).

7. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 5, characterized in that, The guide piece includes guide rods (57) fixedly connected to the two sides of the moving sleeve (52), and guide grooves (56) are formed in the two sides of the inner wall of the storage shell (4), Wherein, one end of the guide rod (57) is fixedly connected with a guide block (58), and the guide block (58) is longitudinally slidably connected in the guide groove (56).

8. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 5, characterized in that, The exhaust piece includes an exhaust pipe (6) and a ball valve (61), the exhaust pipe (6) is communicated on the storage shell (4), and the ball valve (61) is installed on the exhaust pipe (6).

9. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 1, characterized in that, The connecting pipe (1) is fixedly installed with a flange plate (7), and a plurality of mounting holes (71) are formed in the surface of the flange plate (7) in a ring shape.

10. The multi-point switching sampling device for hydrogen production from coke oven gas according to claim 1, characterized in that, The valve on the storage shell (4) is a gate valve, and the valve on the sampling pipe (3) is an electric valve.

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