A liquid carbon dioxide sampling system

Abstract

The utility model relates to the technical field of pipe pile for building engineering provides a kind of liquid carbon dioxide sampling system, including sampling steel bottle, it is characterized in that, the inlet end of sampling steel bottle is equipped with pressure gauge, inlet valve F1, the inlet end of inlet valve F1 is connected with carbon dioxide storage equipment or carbon dioxide conveying pipeline, pressure gauge is equipped with gas circuit converter between the inlet valve of sampling steel bottle, the first outlet of gas circuit converter is connected with the inlet valve of sampling steel bottle, the second outlet of gas circuit converter, the outlet valve of sampling steel bottle is connected with liquefier by stainless steel pipeline, the outlet of liquefier is communicated with carbon dioxide storage equipment or carbon dioxide conveying pipeline.The utility model not only avoids the waste of gaseous carbon dioxide when sampling, but also avoids the harm of air leakage or exhaust action to operator, improves the security of sampling.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide sampling technology, specifically to a liquid carbon dioxide sampling system. Background Technology

[0002] In carbon dioxide processing, it is necessary to sample and test the produced carbon dioxide to determine whether the carbon dioxide product meets the preset qualification requirements. Testing first requires obtaining a sample using a sampler. In existing samplers, when obtaining liquid carbon dioxide, gaseous carbon dioxide initially enters the sampler. After a few seconds of venting, liquid carbon dioxide enters, resulting in some gas remaining in the sampler. This gaseous carbon dioxide is usually vented using the outlet valve at the top of the sampler. Additionally, when carbon dioxide enters the sampler in a gas-liquid mixture during sampling, sampling ends and the inlet valve is closed. However, some gaseous carbon dioxide remains in the input pipe between the inlet valve and the carbon dioxide storage device or delivery pipeline. This gaseous carbon dioxide affects subsequent sampling and is usually vented as well. Therefore, there are at least two points of carbon dioxide venting during sampling, which seriously affects the air quality in the space. Excessive sampling may also threaten the health of sampling operators. Therefore, there is an urgent need to improve the existing sampling system. Summary of the Invention

[0003] This invention proposes a liquid carbon dioxide sampling system that optimizes the structure of existing sampling systems to improve the safety of sampling operations, protect the environment, and safeguard the health of operators.

[0004] The technical solution of this utility model is as follows:

[0005] A liquid carbon dioxide sampling system includes a sampling cylinder. The inlet end of the sampling cylinder is equipped with a pressure gauge and an inlet valve F1. The inlet end of the inlet valve F1 is connected to a carbon dioxide storage device or a carbon dioxide delivery pipeline. A gas path converter is provided between the pressure gauge and the inlet valve of the sampling cylinder. The first outlet of the gas path converter is connected to the inlet valve of the sampling cylinder. The second outlet of the gas path converter and the outlet valve of the sampling cylinder are both connected to a liquefier through stainless steel pipelines. The outlet of the liquefier is connected to the carbon dioxide storage device or the carbon dioxide delivery pipeline.

[0006] Optionally, a control valve F2 is provided between the sampling cylinder outlet valve and the liquefier, a control valve F3 is provided at the inlet of the gas converter, and a control valve F4 is provided at the outlet of the liquefier.

[0007] Optionally, it also includes a cylinder fixing plate, which includes a fixing bracket and a C-shaped clamp. The clamping section of the C-shaped clamp is hinged to the cylinder fixing plate, and the fixing bracket is screwed to the clamp on the sampling cylinder.

[0008] Optionally, the gas converter includes: a converter body and a first plunger valve and a second plunger valve connected to the converter body. The converter body includes a gas chamber, a first outlet pipe and a second outlet pipe communicating with the gas chamber. The first plunger valve is sealed to the outlet of the first outlet pipe, and the second plunger valve is sealed to the second outlet pipe.

[0009] Optionally, the converter body also includes an insertable pressure sensor located inside the air chamber.

[0010] Optionally, it also includes a leak detector and a buzzer mounted on the cylinder mounting plate, the buzzer being signal-connected to the leak detector, and the leak detector being installed for inspection at pipeline and valve structures.

[0011] Optionally, it also includes flow meters Q1, Q2, and Q3. Flow meter Q1 is located between the carbon dioxide storage device or carbon dioxide delivery pipeline and the inlet valve F1. Flow meter Q2 and flow meter Q3 are respectively located on the pipelines of the first outlet and the second outlet of the gas converter.

[0012] The principle and beneficial effects of this utility model are as follows:

[0013] The liquid carbon dioxide sampling system provided by this utility model is used to obtain carbon dioxide samples from carbon dioxide storage equipment or carbon dioxide delivery pipelines. The system includes a sampling cylinder, a pressure gauge, an inlet valve F1, a gas path converter, a liquefier, and necessary control valves. In this system, the outlet valve at the top of the sampling cylinder is connected to the liquefier via a stainless steel pipeline, enabling the liquefaction of gaseous carbon dioxide discharged from the sampling cylinder. In addition, after sampling, a portion of the gas-liquid mixed carbon dioxide is diverted by the gas path converter and enters the liquefier. These two portions of potentially leaking gaseous carbon dioxide are liquefied by the liquefier and then returned to the carbon dioxide storage equipment or carbon dioxide delivery pipeline. This system not only avoids the waste of gaseous carbon dioxide during sampling but also prevents injury to operators from gas leaks or venting, thus improving the safety of sampling. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of a liquid carbon dioxide sampling system provided by this utility model.

[0016] In the diagram: 1. Liquefaction unit; 2. Gas circuit converter; 3. Gas cylinder fixing plate. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0018] In existing methods of obtaining liquid carbon dioxide using a sampler, gaseous carbon dioxide initially enters the sampler. After a few seconds of venting, liquid carbon dioxide enters, resulting in some gaseous carbon dioxide remaining inside. This gaseous carbon dioxide is typically vented using the outlet valve at the top of the sampler. Additionally, when carbon dioxide enters the sampler in a gas-liquid mixture during sampling, and the sampling is stopped and the inlet valve is closed, some gaseous carbon dioxide remains in the input pipe between the inlet valve and the carbon dioxide storage device or delivery pipeline. This gaseous carbon dioxide can affect subsequent sampling and is usually vented as well. Therefore, there are at least two points of carbon dioxide venting during sampling, which seriously affects the air quality in the space. Excessive sampling may also threaten the health of sampling personnel. In view of this, this invention provides a liquid carbon dioxide sampling system that optimizes the structure of existing sampling systems to improve the safety of sampling operations, protect the environment, and protect the health of operators.

[0019] See the following explanation for details:

[0020] A liquid carbon dioxide sampling system includes a sampling cylinder. The inlet end of the sampling cylinder is equipped with a pressure gauge and an inlet valve F1. The inlet end of the inlet valve F1 is connected to a carbon dioxide storage device or a carbon dioxide delivery pipeline. A gas path converter 2 is provided between the pressure gauge and the inlet valve of the sampling cylinder. The first outlet of the gas path converter 2 is connected to the inlet valve of the sampling cylinder. The second outlet of the gas path converter and the outlet valve of the sampling cylinder are both connected to a liquefier 1 through stainless steel pipelines. The outlet of the liquefier 1 is connected to the carbon dioxide storage device or a carbon dioxide delivery pipeline.

[0021] As described above, the liquid carbon dioxide sampling system provided by this utility model is used to obtain carbon dioxide samples from carbon dioxide storage equipment or carbon dioxide delivery pipelines. The system includes a sampling cylinder, a pressure gauge, an inlet valve F1, a gas converter 2, a liquefier 1, and necessary control valves. In this system, the outlet valve at the top of the sampling cylinder is connected to the liquefier 1 through a stainless steel pipeline, enabling the gaseous carbon dioxide discharged from the sampling cylinder to be liquefied by the liquefier 1. In addition, after sampling, some gas-liquid mixed carbon dioxide is diverted by the gas converter 2 and then enters the liquefier 1. These two parts of potentially leaking gaseous carbon dioxide are liquefied by the liquefier 1 and then returned to the carbon dioxide storage equipment or carbon dioxide delivery pipeline. This system not only avoids the waste of gaseous carbon dioxide during sampling but also avoids the injury to operators caused by gas leakage or venting, thus improving the safety of sampling.

[0022] It should be noted that a control valve F2 is provided between the sampling cylinder outlet valve and the liquefier 1, a control valve F3 is provided at the inlet of the gas converter, and a control valve F4 is provided at the outlet of the liquefier 1. For ease of description, the sampling cylinder outlet valve will be referred to as "outlet valve f1" and the sampling cylinder inlet valve as "inlet valve f2" in the following description. In addition, the aforementioned gas converter 2 includes: a converter body and a first plunger valve and a second plunger valve connected to the converter body. The converter body includes a gas chamber, a first outlet pipe and a second outlet pipe communicating with the gas chamber. The first plunger valve is sealed to the outlet of the first outlet pipe, and the second plunger valve is sealed to the second outlet pipe.

[0023] like Figure 1 As shown, during sampling, the inlet valve f2 of the sampling cylinder is opened, and the outlet valve f1 of the sampling cylinder is closed. The first and second plunger valves of the gas converter 2 are adjusted to open the first plunger valve connected to the sampling cylinder and close the second plunger valve connected to the liquefier 1. Then, the inlet valve F1 is opened, and carbon dioxide begins to flow into the cylinder. During the flow, the pressure gauge clearly shows the pressure changes. When the gas-liquid mixture of carbon dioxide appears near the end of the sampling process, the pressure gauge swings back and forth unstably. At this point, the inlet valve F1 is closed first, then the inlet valve f2 is closed, and the first plunger valve is adjusted and closed. The second plunger valve and the control valve F3 are then opened, allowing the gas-liquid mixture of carbon dioxide remaining in the pipeline between the inlet valve F1 and the inlet valve f2 of the sampling cylinder to flow into the liquefier 1. Then, the outlet valve f1 and the control valve F2 are slowly opened to allow the gaseous carbon dioxide in the sampling cylinder to be discharged and enter the liquefier 1. The liquefier 1 liquefies the collected gaseous carbon dioxide to obtain liquid carbon dioxide, and then opens the control valve F4 to return the liquid carbon dioxide to the carbon dioxide storage device or carbon dioxide delivery pipeline.

[0024] Although the foregoing process describes the sampling process, this application is primarily concerned with protecting the entire system configuration for sampling.

[0025] The pressure gauge is used to display the sampling status during the aforementioned process, and the pressure information can be used to determine the sampling status. For example, when liquid carbon dioxide is moving normally into the sampling cylinder, the pressure gauge pointer is relatively stable. In the early stage of sampling and near the end of sampling, the pressure gauge pointer fluctuates.

[0026] It should also be noted that the system includes a cylinder fixing plate 3 for securing the cylinder. The cylinder fixing plate 3 includes a fixing bracket and a C-shaped clamp. The clamping section of the C-shaped clamp is hinged to the cylinder fixing plate 3, and the fixing bracket is screwed to the clamp on the sampling cylinder. Figure 1 As shown in the enlarged view, the sampling cylinder is vertically fixed to the cylinder fixing plate 3 using a fixed bracket and a C-clamp. The C-clamp is hinged to the cylinder fixing plate 3, making it easy to remove the sampling cylinder from the C-clamp. After fastening the C-clamp, bolts are used to secure it.

[0027] In addition, this embodiment also includes flow meters Q1, Q2, and Q3. Flow meter Q1 is installed between the carbon dioxide storage device or carbon dioxide delivery pipeline and the inlet valve F1. Flow meters Q2 and Q3 are respectively installed on the pipelines of the first outlet and the second outlet of the gas converter 2. The first outlet is used to install the aforementioned first plunger valve, and the second outlet is used to install the aforementioned second plunger valve. Flow meters Q1, Q2, and Q3 are used to measure the flow rate of gaseous and liquid carbon dioxide in the recovery pipeline, facilitating automatic control of the opening and closing of each valve based on the flow data. For example, intelligent sampling can be achieved using workshop IoT and PLC control technology. This embodiment does not provide a specific description of the implementation of intelligent sampling; it can be selected in actual use. In addition, a flow meter Q4 is also installed between the liquefier 1 and the carbon dioxide storage device or carbon dioxide delivery pipeline to detect the flow rate of liquid carbon dioxide entering the carbon dioxide storage device or carbon dioxide delivery pipeline after liquefaction.

[0028] In some embodiments, the converter body further includes an insertable pressure sensor disposed within the gas chamber. It also includes a leak detector and a buzzer mounted on the cylinder mounting plate 3, the buzzer being signal-connected to the leak detector, which is used for routine inspection of pipelines and valve structures.

[0029] In the above embodiment, the gas converter 2 includes a gas chamber in its internal structure. This gas chamber is mainly used to store a portion of the gas or liquid. An insertion pressure sensor is inserted into this gas chamber to obtain the pressure parameters within the gas chamber. The volume changes of the gas and liquid carbon dioxide in the gas converter 2 are determined based on these pressure changes. Additionally, a leak detector and a buzzer are installed on the cylinder fixing plate 3. When a leak is detected around any pipeline or valve, the buzzer sounds to notify technicians to quickly check the system's sealing. If necessary, the entire sampling system can be shut down and sampling can resume after the leak is eliminated. The leak detector can utilize an existing inspection robot. It determines whether a gas or liquid leak has occurred based on the different refraction or reflection effects of the medium in the leak space compared to normal air. This embodiment does not impose specific limitations on the model of the detection equipment.

[0030] Finally, this utility model provides a liquid carbon dioxide sampling system, including a sampling cylinder. The sampling cylinder has a pressure gauge and an inlet valve F1 at its inlet end. The inlet end of the inlet valve F1 is connected to a carbon dioxide storage device or a carbon dioxide delivery pipeline. A gas path converter 2 is provided between the pressure gauge and the inlet valve of the sampling cylinder. The first outlet of the gas path converter 2 is connected to the inlet valve of the sampling cylinder. The second outlet of the gas path converter and the outlet valve of the sampling cylinder are both connected to a liquefier 1 via stainless steel pipelines. The outlet of the liquefier 1 is connected to the carbon dioxide storage device or a carbon dioxide delivery pipeline. This utility model not only avoids the waste of gaseous carbon dioxide during sampling but also avoids injury to operators caused by leaks or venting, thus improving sampling safety.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A liquid carbon dioxide sampling system, comprising a sampling cylinder, characterized in that, The sampling cylinder is equipped with a pressure gauge and an inlet valve F1 at its inlet end. The inlet end of the inlet valve F1 is connected to a carbon dioxide storage device or a carbon dioxide delivery pipeline. A gas converter (2) is provided between the pressure gauge and the inlet valve of the sampling cylinder. The first outlet of the gas converter (2) is connected to the inlet valve of the sampling cylinder. The second outlet of the gas converter (2) and the outlet valve of the sampling cylinder are both connected to a liquefier (1) through stainless steel pipelines. The outlet of the liquefier (1) is connected to a carbon dioxide storage device or a carbon dioxide delivery pipeline.

2. The liquid carbon dioxide sampling system according to claim 1, characterized in that, A control valve F2 is provided between the sampling cylinder outlet valve and the liquefier (1), a control valve F3 is provided at the inlet of the gas converter (2), and a control valve F4 is provided at the outlet of the liquefier (1).

3. The liquid carbon dioxide sampling system according to claim 2, characterized in that, It also includes a cylinder fixing plate (3), which includes a fixing bracket and a C-shaped clamp. The clamping section of the C-shaped clamp is hinged to the cylinder fixing plate (3), and the fixing bracket is screwed to the clamp on the sampling cylinder.

4. A liquid carbon dioxide sampling system according to claim 1, characterized in that, The gas converter (2) includes: a converter body and a first plunger valve and a second plunger valve connected to the converter body. The converter body includes a gas chamber, a first outlet pipe and a second outlet pipe connected to the gas chamber. The first plunger valve is sealed to the outlet of the first outlet pipe, and the second plunger valve is sealed to the second outlet pipe.

5. A liquid carbon dioxide sampling system according to claim 4, characterized in that, The converter body also includes an insertable pressure sensor, which is located inside the air chamber.

6. The liquid carbon dioxide sampling system according to claim 3, characterized in that, It also includes a leak detector and a buzzer mounted on the cylinder mounting plate (3), the buzzer being signal-connected to the leak detector, the leak detector being installed for inspection at pipeline and valve structures.

7. The liquid carbon dioxide sampling system according to claim 2, characterized in that, It also includes flow meter Q1, flow meter Q2, and flow meter Q3. Flow meter Q1 is located between the carbon dioxide storage device or carbon dioxide delivery pipeline and the inlet valve F1. Flow meter Q2 and flow meter Q3 are respectively located on the pipelines of the first outlet and the second outlet of the gas converter (2).

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