A sampling device for high pressure gases

Abstract

The utility model discloses a kind of sampling device for high-pressure gas, first gate valve and second gate valve are connected on sub-pipeline, first pressure reducing valve is connected after second gate valve, for the high-pressure gas pressure low pressure, a ball valve is connected after first pressure reducing valve, for controlling target gas into second pressure reducing valve, second pressure reducing valve is used to reduce target gas pressure to micro-positive pressure, a stop valve is connected after second pressure reducing valve, for controlling target gas into quick connector, stop valve is connected after a three-way pressure relief valve, quick connector is connected after three-way pressure relief valve;First trace adjusting valve (pressure and flow) is connected after quick connector, second trace adjusting valve is connected after first trace adjusting valve, when gas sample is taken on high-pressure pipeline, MPa level pressure can be reduced to micro-positive pressure, safety and effective operation can be provided simultaneously, accurate sampling has representative sample, reliable data is provided for industrial production, and extensive sampling is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas sampling technology, specifically to a sampling device for high-pressure gas. Background Technology

[0002] In the process of high-pressure gas production, in order to further clarify the composition of the gas, it is necessary to sample and test the target gas. Since the gas pressure generated in the production process is relatively high, it is not easy to control the pressure and flow rate of the target gas components. Therefore, it is necessary to use appropriate sampling equipment for collection.

[0003] Existing sampling devices cannot withstand the high-pressure gas generated during the production process. To accurately and representatively obtain the effective components in the target gas, it is necessary to accurately control the flow rate and volume of the high-pressure gas during the production process. Only then can the obtained gas be representative and the target components be accurately identified during analysis and testing. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device for high-pressure gas, which can reduce the pressure of high-pressure gas to a slightly positive pressure and control the flow rate, and can accurately and reliably obtain the effective components in the target gas, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for high-pressure gas, comprising a gate valve, a pressure reducing valve, a micro-regulating valve, and a flow meter. The gate valve is divided into a first gate valve and a second gate valve, which are sequentially connected to a secondary pipeline. The pressure reducing valve is divided into a first pressure reducing valve and a second pressure reducing valve. The first pressure reducing valve is connected after the second gate valve and is used to reduce the pressure of the high-pressure gas. A ball valve is connected after the first pressure reducing valve to control the target gas to enter the second pressure reducing valve. A shut-off valve is connected after the second pressure reducing valve to control the target gas to enter a quick connector. A three-way pressure relief valve is connected after the shut-off valve and is connected to the quick connector. The micro-regulating valve is divided into a first micro-regulating valve and a second micro-regulating valve. The first micro-regulating valve is connected after the quick connector, and the second micro-regulating valve is connected after the first micro-regulating valve. A flow meter is connected after the second micro-regulating valve and is installed on the pipeline used to sample the target gas.

[0006] Preferably, the first gate valve is normally open, and the second gate valve is used to switch the gas supply on and off.

[0007] Preferably, the first pressure reducing valve is installed after the second gate valve of the main pressure pipeline to reduce the pressure level from high pressure of 5 MPa or above to below 1 MPa.

[0008] Preferably, the second pressure reducing valve is located after the ball valve following the first pressure reducing valve, reducing the pressure level from 1 MPa to below 0.11 MPa.

[0009] Preferably, the quick connector is located after the three-way pressure relief valve after the second pressure reducing valve, and is used for the sampling of target gas.

[0010] Preferably, the first micro-adjustment valve is used to stabilize the pressure and flow rate after the secondary pressure reduction.

[0011] Preferably, the second micro-adjustment valve is used for the stable adjustment of the target gas pressure.

[0012] Preferably, the flow meter is connected after the second micro-adjustment valve to accurately control the target gas flow rate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a sampling device for high-pressure gas. It connects a first pressure reducing valve, a second pressure reducing valve, a first micro-adjustment valve, a second micro-adjustment valve, and a flow meter via a quick connector. When taking gas samples on a high-pressure pipeline, it can reduce the pressure to a micro-positive pressure at the MPa level. At the same time, it can provide safe and effective operation, accurately sample representative samples, provide reliable data for industrial production, and further reduce the need for extensive sampling. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. First gate valve; 2. Second gate valve; 3. Secondary pipeline; 4. First pressure reducing valve; 5. Second pressure reducing valve; 6. Ball valve; 7. Gate valve; 8. Quick coupling; 9. Three-way pressure relief valve; 10. First micro-regulating valve; 11. Second micro-regulating valve; 12. Flow meter. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1This embodiment provides a sampling device for high-pressure gas, including a gate valve, a pressure reducing valve, a micro-regulating valve, and a flow meter 12. The gate valve is divided into a first gate valve 1 and a second gate valve 2, which are sequentially connected to a secondary pipeline 3. The first gate valve 1 is normally open, and the second gate valve 2 is used to switch the gas flow on and off. The pressure reducing valve is divided into a first pressure reducing valve 4 and a second pressure reducing valve 5. The first pressure reducing valve 4 is connected after the second gate valve 2 and is used to reduce the pressure of the high-pressure gas. The first pressure reducing valve 4 is located after the second gate valve 2 in the main pressure pipeline, reducing the pressure level from above 5 MPa to below 1 MPa. A ball valve 6 is connected after the first pressure reducing valve 4 to control the target gas to enter the second pressure reducing valve 5. The second pressure reducing valve 5 is located after the ball valve 6 after the first pressure reducing valve 4, reducing the pressure level from below 1 MPa to below 0.11 MPa. A shut-off valve 7 is connected after the pressure reducing valve 5 to control the entry of the target gas into the quick connector 8. A three-way pressure relief valve 9 is connected after the shut-off valve 7, and the three-way pressure relief valve 9 is connected to the quick connector 8. The quick connector 8 is located after the three-way pressure relief valve 9 after the second pressure reducing valve 5 and is used for the sampling of the target gas. The micro-regulating valve is divided into a first micro-regulating valve 10 and a second micro-regulating valve 11. The first micro-regulating valve 10 is connected after the quick connector 8 and is used to stabilize the pressure and flow rate after the secondary pressure reduction. The second micro-regulating valve 11 is connected after the first micro-regulating valve 10 and is used to stabilize and regulate the pressure of the target gas. The flow meter 12 is connected after the second micro-regulating valve 11 and is installed on the pipeline used to sample the target gas. The flow meter 12 is connected after the second micro-regulating valve 11 to accurately control the flow rate of the target gas.

[0018] Working Principle: This utility model's sampling device for high-pressure gas has a first gate valve 1 (normally open) connected to a second gate valve 2 (for gas flow control) installed on the secondary pipeline 3. The second gate valve 2 is followed by a first pressure reducing valve 4 to reduce the high-pressure gas pressure. The first pressure reducing valve 4 is followed by a ball valve 6 to control the target gas's entry into a second pressure reducing valve 5, which reduces the target gas pressure to a slightly positive pressure. The second pressure reducing valve 5 is followed by a shut-off valve 7 to control the target gas's entry into a quick connector 8. The shut-off valve 7 is followed by a three-way pressure relief valve 9, which is then connected to the quick connector 8. The quick connector 8 is followed by a first micro-adjustment valve 10 (for pressure and flow), and the first micro-adjustment valve 10 is followed by a second micro-adjustment valve 11. Because accurate and representative target sampling is crucial under high-pressure conditions, stable pressure is essential to ensure that the flow meter 12 connected to the second micro-adjustment valve 11 can stably and accurately sample the target.

[0019] In summary, the sampling device for high-pressure gas of this invention, which connects to the first pressure reducing valve 4, the second pressure reducing valve 5, the first micro-adjustment valve 10, the second micro-adjustment valve 11, and the flow meter 12 via a quick connector 8, can reduce the pressure from MPa to a slightly positive pressure when taking gas samples on a high-pressure pipeline. At the same time, it can provide safe and effective operation, accurately sample representative samples, provide reliable data for industrial production, and further reduce the need for extensive sampling.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for high pressure gas comprising an on-off gate valve, a pressure reducing valve, a micro-regulator valve and a flow meter (12), characterized in that: The gate valve is divided into a first gate valve (1) and a second gate valve (2), which are sequentially connected to the secondary pipeline (3). The pressure reducing valve is divided into a first pressure reducing valve (4) and a second pressure reducing valve (5). The first pressure reducing valve (4) is connected after the second gate valve (2) and is used to reduce the pressure of high-pressure gas. A ball valve (6) is connected after the first pressure reducing valve (4) to control the target gas to enter the second pressure reducing valve (5). A shut-off valve (7) is connected after the second pressure reducing valve (5) to control the target gas to enter the second pressure reducing valve (5). A quick connector (8) is connected to a three-way pressure relief valve (9) after the shut-off valve (7), and the three-way pressure relief valve (9) is connected to the quick connector (8); the micro-adjustment valve is divided into a first micro-adjustment valve (10) and a second micro-adjustment valve (11); the quick connector (8) is connected to the first micro-adjustment valve (10), the first micro-adjustment valve (10) is connected to the second micro-adjustment valve (11), the second micro-adjustment valve (11) is connected to the flow meter (12), and the flow meter (12) is installed on the pipeline used to collect the target gas.

2. A sampling device for high pressure gas as claimed in claim 1, wherein: The first gate valve (1) is normally open, and the second gate valve (2) is used to switch the gas on and off.

3. A sampling device for high pressure gases according to claim 1, characterized in that: The first pressure reducing valve (4) is installed after the second gate valve (2) of the main pressure pipeline, reducing the pressure level from high pressure above 5 MPa to below 1 MPa.

4. A sampling device for high pressure gas as claimed in claim 3, wherein: The second pressure reducing valve (5) is located after the ball valve (6) after the first pressure reducing valve (4), and reduces the pressure level from 1 MPa to below 0.11 MPa.

5. A sampling device for high pressure gases according to claim 1, characterized in that: The quick connector (8) is located after the three-way pressure relief valve (9) after the second pressure reducing valve (5) and is used for the sampling of target gas.

6. A sampling device for high pressure gas as claimed in claim 1, wherein: The first micro-adjustment valve (10) is used to stabilize the pressure and flow rate after the secondary pressure reduction.

7. A sampling device for high pressure gas as claimed in claim 1, wherein: The second micro-adjustment valve (11) is used for the stable adjustment of the target gas pressure.

8. A sampling device for high pressure gas as claimed in claim 1, wherein: The flow meter (12) is connected after the second micro-adjustment valve (11) to accurately control the target gas flow rate.

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