Gas-phase medium sampling and detecting device

Abstract

A gas-phase medium sampling and detecting device is applied to multiphase medium pipeline fluid containing gas-phase media and comprises a separation gas chamber, an inlet pipeline, an outlet pipeline and a gas-phase adjusting pipeline. Multiple stages of staggered baffles are arranged in an inner cavity of the separation gas chamber, a gas phase detection hole connected with a gas detection device is formed in the top of the shell, and a liquid discharge switch is arranged at the bottom of the shell; the inlet pipeline penetrates through the left side of the shell of the separation gas chamber, is communicated with the inner cavity and is used for introducing the multi-phase medium pipeline fluid; one end of an outlet pipeline penetrates through the right side of the shell of the separation gas chamber, is communicated with the inner cavity and is used for leading out the multi-phase medium pipeline fluid; the inlet end of the gas phase adjusting pipeline penetrates through the top of the separation gas chamber shell and is adjacent to the gas phase detection hole, and the outlet end of the gas phase adjusting pipeline is connected to the outlet pipeline. The device is ingenious in technical principle, simple in structure and small in size, so that the device can be installed and sampled close to a fluid supply source and is used for detecting gas phase medium parameters in output fluid in time.

Description

Technical Field

[0001] This invention belongs to the field of fluid control, and specifically relates to a gas phase medium sampling and detection device. Background Technology

[0002] For pipeline fluid media consisting of gas and liquid phases, it is usually necessary to detect relevant parameters of both the liquid and gas phases. However, most detection devices have high requirements for the application environment. For example, for the detection of parameters of gas phase media, gas phase detection devices often need to be used in a separate gas environment.

[0003] The traditional solution involves using a gas-liquid separation unit or device to separate the gas and liquid phases, sampling the separated gas, and then analyzing it using a gas phase detection device. However, the gas-liquid separation units or devices used in this traditional method are often quite large. In industrial applications, their installation location is far from the fluid supply source. Therefore, the gas phase parameters detected after gas-liquid separation cannot reflect the production status of the fluid supply source in a timely manner, and thus cannot be adjusted in a timely manner based on the detected gas phase parameters. For example, in a water electrolysis hydrogen production system, the hydrogen produced by the electrolyzer carries a large amount of liquid water. The subsequent gas-liquid separation unit is used to separate the hydrogen from the entire fluid, and then a purification process is used to complete the hydrogen production. A long pipeline separates the gas-liquid separation unit from the hydrogen outlet of the electrolyzer. Because the gas-liquid separation unit is far from the hydrogen outlet of the electrolyzer, the gas concentration detected by the sampled gas phase medium in this type of traditional gas-liquid separation unit is lagging and cannot reflect the hydrogen concentration in the fluid at the hydrogen outlet of the electrolyzer in a timely manner, thus failing to adjust the production control process of the electrolyzer in a timely manner. In some measurement environments where response time is critical, it cannot adequately meet the requirements.

[0004] Therefore, it is essential to research a gas-liquid separation unit or device that can sample from the output port near the fluid supply source, and that can separate rapidly and effectively to reflect the parameters of the gas phase medium in the output fluid in a timely manner, in order to meet the product development trend. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a gas phase medium sampling and detection device, which is applied to multiphase medium pipeline fluid containing gas phase medium.

[0006] The technical solution adopted in this invention is as follows:

[0007] A gas phase medium sampling and detection device is applied to multiphase medium pipeline fluid containing gas phase medium, including a gas separation chamber, an inlet pipeline, an outlet pipeline, and a gas phase conditioning pipeline;

[0008] The gas separator chamber has multiple staggered baffles in its inner cavity, a gas phase detection hole for connecting a gas detection device is provided on the top of the housing of the gas separator chamber, and a drain switch for adjusting the fluid height in the inner cavity is provided at the bottom of the housing of the gas separator chamber.

[0009] The inlet pipe passes through the left side of the shell of the separation chamber and communicates with the inner cavity. The inlet pipe is used to introduce the multiphase medium fluid.

[0010] One end of the outlet pipeline passes through the right side of the shell of the separation chamber and communicates with the inner cavity, while the other end leads out the multiphase medium pipeline fluid.

[0011] The inlet end of the gas phase conditioning pipeline passes through the top of the separation chamber housing and is located adjacent to the gas phase detection hole, and the outlet end of the gas phase conditioning pipeline is connected to the outlet pipeline.

[0012] Furthermore, the two sides of the inner cavity that are connected to the inlet pipe and the outlet pipe respectively are cylindrical or spherical structures.

[0013] The top surface of the chamber of the separation gas chamber is a dome structure with left and right symmetry.

[0014] Furthermore, the gas phase conditioning pipeline includes a venting branch and a circulation branch;

[0015] One end of the vent branch is connected to the inlet end of the gas phase regulating pipeline, and the other end is connected to the atmosphere. A first regulating valve is provided on the vent branch.

[0016] One end of the circulation branch is connected to the inlet end of the gas phase regulating pipeline, and the other end is connected to the outlet pipeline. A second regulating valve is provided on the circulation branch.

[0017] Furthermore, the baffle is located above the line connecting the inlet pipe and the outlet pipe, one side of the baffle is fixed to the inner cavity sidewall, the baffle is an inclined surface that slopes towards the bottom of the inner cavity, and there are gaps between the baffles.

[0018] Furthermore, a union is provided at the inlet end of the inlet pipe and the outlet end of the outlet pipe.

[0019] Furthermore, the housing is equipped with an observation window that allows observation of the liquid level in the chamber of the separated gas chamber, and the connection between the housing and the observation window is sealed.

[0020] Furthermore, the observation window is made of tempered glass.

[0021] Furthermore, the drain switch is a drain screw, which is installed at the bottom of the gas separation chamber housing through the mounting hole.

[0022] The gas-liquid fluid enters the separation chamber through the inlet connector. Under the action of inertia and gravity, the gaseous medium in the fluid is separated and accumulates in the upper part of the inner cavity of the separation chamber. As the gaseous medium in the fluid is continuously separated, the concentration of the gas in the upper part of the inner cavity of the separation chamber is almost the same as the concentration of the gas in the fluid due to the effect of gas mixing and diffusion. The gas phase detection device installed on the top of the separation chamber shell measures the concentration of the separated gaseous medium in the absence of other media.

[0023] When a shorter response time is required for the gas phase detection device, the second regulating valve on the circulation branch of the gas phase regulating pipeline can be adjusted. Once the liquid level in the separation chamber is stable, a small airflow is formed in the circulation branch due to the pressure difference between the inlet and outlet of the circulation branch of the gas phase regulating pipeline. The gas separated from the fluid in the separation chamber quickly flows to the downstream outlet pipeline through the circulation branch. The gas concentration detected by the gas phase detection device is closer to the concentration of the gas phase medium in the fluid, and the separation response time becomes shorter.

[0024] When the flow rate or pressure of the fluid introduced into the inlet pipeline changes significantly, the liquid level in the separation chamber can be adjusted by regulating the first regulating valve or drain switch on the vent branch, thereby adapting to the corresponding flow rate and pressure.

[0025] This invention features ingenious technology, a simple structure, and a very small size, allowing for sampling close to the fluid supply source to promptly reflect the parameters of the gaseous medium in the output fluid. Of course, the flow rate at the output port of fluid supply sources involved in industrial production is generally quite large; a portion of the flow can be diverted into this invention to detect relevant parameters of the gaseous medium within the fluid.

[0026] In summary, this invention effectively solves the shortcomings of traditional gas-liquid separation units or equipment, such as large size, long installation distance from the fluid supply source, and inability to reflect the production status of the fluid supply source in a timely manner after gas-liquid separation. It provides a gas-liquid separation unit or device that can be installed close to the fluid supply source for sampling, offers rapid separation, and provides excellent separation results, allowing for timely reflection of gas phase medium parameters in the output fluid. By adjusting the volume of the gas phase medium separation chamber, a locally minimized gas phase flow space is formed, providing a good testing environment for gas phase medium detection. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0029] Figure 1 and Figure 2In the middle, 1-inlet union, 2-separation gas chamber, 3-gas phase detection device, 4-first regulating valve, 5-second regulating valve, 6-outlet connector, 7-drain switch. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] It should be noted that the descriptions of these embodiments are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] like Figure 1 and Figure 2 As shown, a gas phase medium sampling and detection device includes a gas separation chamber 2, an inlet pipeline, an outlet pipeline, and a gas phase conditioning pipeline;

[0033] The gas separator chamber 2 has multiple staggered baffles in its inner cavity, a gas phase detection hole for connecting the gas phase detection device 3 is provided on the top of the housing of the gas separator chamber, and a drain switch for adjusting the fluid height in the inner cavity is provided at the bottom of the housing of the gas separator chamber.

[0034] The inlet pipe passes through the left side of the shell of the separation chamber and communicates with the inner cavity. The inlet pipe is used to introduce the multiphase medium fluid.

[0035] One end of the outlet pipeline passes through the right side of the shell of the separation chamber and communicates with the inner cavity, while the other end leads out the multiphase medium pipeline fluid.

[0036] The inlet end of the gas phase conditioning pipeline passes through the top of the separation chamber housing and is located adjacent to the gas phase detection hole, and the outlet end of the gas phase conditioning pipeline is connected to the outlet pipeline.

[0037] Furthermore, the two sides of the inner cavity that are connected to the inlet pipe and the outlet pipe respectively are cylindrical or spherical structures.

[0038] The top surface of the inner cavity of the gas separation chamber 2 is a dome structure with left and right symmetry. The dome structure design of the top surface of the inner cavity of the gas separation chamber 2 is conducive to the flow of the separated gaseous medium and avoids dead zones.

[0039] As a further preferred embodiment, the gas phase conditioning pipeline includes a venting branch and a circulation branch;

[0040] One end of the vent branch is connected to the inlet end of the gas phase regulating pipeline, and the other end is connected to the atmosphere. A first regulating valve 4 is provided on the vent branch.

[0041] One end of the circulation branch is connected to the inlet end of the gas phase regulating pipeline, and the other end is connected to the outlet pipeline. A second regulating valve 5 is provided on the circulation branch.

[0042] like Figure 1 and Figure 2 In the illustrated embodiment, the gas phase conditioning pipeline branches into two branches after the inlet end: one is a venting branch, and the other is a recirculation branch. Alternatively, both branches can be connected to the inlet end of the gas phase conditioning pipeline, which is also feasible. No limitation is imposed here.

[0043] like Figure 1 and Figure 2 In the embodiment shown, the other end of the circulation branch, i.e. the outlet end, is connected to the outlet pipeline. To facilitate connection, a tee connector is connected to the outlet end of the outlet pipeline. The outlet end of the circulation branch is connected to the outlet pipeline through one of the interfaces of the tee. This is a common connection method and is not limited here.

[0044] As a further preferred implementation, the inlet end of the inlet pipe and the outlet end of the outlet pipe are provided with unions to facilitate connection with the fluid inlet or outlet pipes during application and reduce construction difficulty.

[0045] As a further preferred embodiment, the baffle is located above the line connecting the inlet pipe and the outlet pipe, one side of the baffle is fixed to the inner cavity sidewall, the baffle is an inclined surface sloping towards the bottom of the inner cavity, and there are gaps between the baffles. Figure 1 and Figure 2 In the embodiment shown, the baffle is positioned above the fluid flow and is also restricted to be an inclined surface that slopes towards the bottom of the inner cavity. There are gaps between the baffles. This arrangement is not conducive to the liquid phase medium in the fluid entering the gas phase medium space in the upper part of the inner cavity of the separation chamber 2. The gas phase medium separated from the fluid can enter the upper part of the inner cavity of the separation chamber 2 through the gaps between the baffles, which facilitates the separation of the gas phase medium in the fluid.

[0046] As a further preferred embodiment, the housing of the gas separation chamber is equipped with an observation window for observing the liquid level inside the inner cavity, and the housing of the gas separation chamber and the observation window are sealed together. The liquid level observation window allows for a direct view of the liquid level inside the gas separation chamber. Furthermore, the observation window is made of tempered glass, which can withstand a certain amount of fluid pressure.

[0047] As a further preferred embodiment, the drain switch 7 is a drain screw, installed at the bottom of the gas separation chamber housing through a mounting hole. Figure 1 and Figure 2 In the embodiment shown, the drain switch 7 is a drain screw, which is installed at the bottom of the separation chamber housing.

[0048] A gas-liquid fluid containing a gaseous medium enters the separation chamber 2 through the inlet pipe. Under the action of inertia, part of the fluid flows along the flow channel into the outlet pipe and flows to the next stage, while the other part of the fluid that does not enter the outlet pipe is rolled back by the side wall of the chamber and the separation baffle. The gaseous medium in the fluid breaks down along with bubbles, and the liquid medium falls back into the fluid under the action of gravity. Thus, the gaseous medium is separated from the fluid.

[0049] The gas separation chamber 2 is equipped with multi-stage staggered baffles to ensure effective separation of the gaseous medium from the gas-liquid fluid within a certain inflow velocity range. The upper part of the gas separation chamber 2 is the gaseous medium space, which is under pressure to prevent the fluid level from filling the entire chamber. A gas phase detection device 3 is installed at the top of the gas separation chamber. By opening and closing the first regulating valve 4 of the vent branch, the liquid level in the gas separation chamber 2 can be increased. Opening the drain switch (drain screw) at the bottom can lower the liquid level, thereby adjusting the volume of the gaseous medium space.

[0050] The gas-liquid fluid enters the separation chamber 2 through the inlet connector 1. Under the influence of inertia and gravity, the gas and liquid phases are separated. The gaseous medium accumulates in the upper part of the inner cavity of the separation chamber 2. As the gaseous medium in the fluid is continuously separated, the concentration of the gaseous medium in the upper part of the separation chamber 2 becomes almost identical to the concentration of the gas in the fluid due to gas mixing and diffusion. The gas phase detection device 3 installed at the top of the separation chamber 2 measures the concentration of the separated gaseous medium in the absence of other media. When the fluid in the pipeline contains multiple gaseous media, the gas phase detection port can be connected to the gas phase detection device 3 corresponding to each of the multiple gaseous media.

[0051] When a shorter response time is required for the gas phase detection device 3, the second regulating valve 5 on the circulation branch of the gas phase regulating pipeline can be adjusted. Once the liquid level in the gas separation chamber 2 is stable, a small airflow is formed in the circulation branch due to the pressure difference between the inlet and outlet of the circulation branch of the gas phase regulating pipeline. The gas separated from the fluid in the gas separation chamber 2 quickly flows to the downstream outlet pipeline through the circulation branch. The gas concentration detected by the gas phase detection device 3 is closer to the concentration of the gas phase medium in the fluid, and the separation response time becomes shorter.

[0052] When the flow rate or pressure of the fluid introduced by the inlet pipeline changes significantly, the liquid level in the separation chamber 2 can be adjusted by regulating the first regulating valve 4 or the drain switch 7 on the vent branch, thereby adapting to the corresponding flow rate and pressure.

[0053] The invention has a clever technical principle, a simple structure, and can be made very small, so it can be installed close to the fluid supply source to reflect the parameters of the gaseous medium in the output fluid in a timely manner.

[0054] Of course, the flow rate at the outlet of the fluid supply source involved in industrial production is generally quite large. A portion of the flow can be diverted into the inlet pipeline. This invention can be used to detect parameters related to the gaseous medium in the fluid. The fluid diverted from the outlet pipeline can also be connected to the original outlet pipeline of the fluid supply source to achieve non-destructive testing.

[0055] This invention is applicable not only to gas-liquid fluids containing gaseous media, but also to multiphase media pipeline fluids containing gaseous media, such as mixed fluids of gas, liquid and solid particles, and can be applied when the fluid viscosity is not high.

[0056] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gas phase medium sampling and detection device, applied to multiphase medium pipeline fluids containing gas phase media, characterized in that: Includes a gas separation chamber (2), an inlet pipeline, an outlet pipeline, and a gas phase conditioning pipeline; The gas separation chamber (2) has multiple staggered baffles in its inner cavity, a gas phase detection hole for connecting a gas detection device is provided at the top of the gas separation chamber, and a drain switch (7) for adjusting the fluid height in the inner cavity is provided at the bottom of the gas separation chamber. The inlet pipe passes through the left side of the shell of the separation chamber and communicates with the inner cavity. The inlet pipe is used to introduce the multiphase medium fluid. One end of the outlet pipeline passes through the right side of the shell of the separation chamber and communicates with the inner cavity, while the other end leads out the multiphase medium pipeline fluid. The inlet end of the gas phase conditioning pipeline passes through the top of the separation chamber housing and is located adjacent to the gas phase detection hole, and the outlet end of the gas phase conditioning pipeline is connected to the outlet pipeline.

2. The gas phase medium sampling and detection device according to claim 1, characterized in that, The two sides of the inner cavity, which are respectively connected to the inlet pipe and the outlet pipe, are cylindrical or spherical structures.

3. The gas phase medium sampling and detection device according to claim 1, characterized in that, The gas phase conditioning pipeline includes a venting branch and a circulation branch; One end of the vent branch is connected to the inlet end of the gas phase regulating pipeline, and the other end is connected to the atmosphere. A first regulating valve (4) is provided on the vent branch. One end of the circulation branch is connected to the inlet end of the gas phase regulating pipeline, and the other end is connected to the outlet pipeline. A second regulating valve (5) is provided on the circulation branch.

4. The gas phase medium sampling and detection device according to claim 1, characterized in that, The baffle is located above the line connecting the inlet pipe and the outlet pipe. One side of the baffle is fixed to the inner cavity sidewall. The baffle is an inclined surface that slopes towards the bottom of the inner cavity. There are gaps between the baffles.

5. The gas phase medium sampling and detection device according to claim 1, characterized in that, The inlet end of the inlet pipe and the outlet end of the outlet pipe are provided with a flexible joint.

6. The gas phase medium sampling and detection device according to claim 1, characterized in that, The housing of the gas separation chamber is equipped with an observation window that allows observation of the liquid level inside the chamber, and the housing of the gas separation chamber and the observation window are sealed together.

7. The gas phase medium sampling and detection device according to claim 6, characterized in that, The observation window is made of tempered glass.

8. The gas phase medium sampling and detection device according to claim 1, characterized in that, The drain switch (7) is a drain screw installed at the bottom of the gas separation chamber housing through the mounting hole.

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