Manual sampling device for natural gas

Abstract

The utility model provides a manual sampling device for natural gas, which comprises a flange, a decompression filtering system, a sampling system and an emptying pipeline, the flange is connected with the decompression filtering system through a pipeline, the decompression filtering system is connected with the sampling system through a pipeline, and the sampling system is connected with the emptying pipeline through a pipeline. The flange is used for being reliably connected with a high-pressure output pipeline, and the sealing performance and safety in the sampling process are guaranteed. The pressure reduction filtering system is used for reducing the pressure of the natural gas and removing impurities in the natural gas, so that the stability of the sampling process and the purity of a sample are ensured. The sampling system is used for rapidly collecting and storing samples. The emptying pipeline is used for emptying residual gas in the device after sampling is completed, so that interference to next sampling is avoided. Through reasonable structural design and operation flow, safe sampling of high-pressure natural gas is achieved. And the safety of operators is ensured. The sampling steps are simplified, personnel participation is reduced, the operation difficulty is reduced, and the sampling efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas sampling technical field especially relates to a natural gas manual sampling device. BACKGROUND

[0002] With the rapid development of natural gas industry, the demand for gas quality component analysis in the transportation process of natural gas station is increasing. For the site that has installed online sampling analysis house, the sampling work is relatively convenient. However, for the station that has not installed such facilities, especially in the case of high-pressure external pipeline, manual sampling becomes an important and complex task.

[0003] At present, for the station that has not installed online sampling analysis house, manual sampling is usually carried out by connecting the field instrument pipeline. However, through in-depth investigation and analysis, it is found that this method has the following main problems:

[0004] Safety problem: in the high-pressure environment, the sampling equipment is easy to be damaged, and leakage is easy to occur in the sampling process, which poses a serious threat to the safety of the operator.

[0005] Efficiency problem: the traditional manual sampling method is complicated, and needs multiple people to operate cooperatively, which leads to low sampling efficiency.

[0006] Data accuracy problem: due to the instability in the sampling process, the sampling data may have errors, which will affect the accuracy of the subsequent analysis results.

[0007] Therefore, in order to solve the above problems, it is necessary to design a safe, efficient and accurate manual sampling device to meet the sampling needs of natural gas station in high-pressure environment. SUMMARY

[0008] The utility model solves the technical problem in the prior art and provides a natural gas manual sampling device.

[0009] The technical scheme for solving the above technical problem is as follows: a natural gas manual sampling device, comprising: a flange, a pressure reduction filtration system, a sampling system and a emptying pipeline, the flange is connected with the pressure reduction filtration system through a pipeline, the pressure reduction filtration system is connected with the sampling system through a pipeline, and the sampling system is connected with the emptying pipeline through a pipeline.

[0010] The beneficial effects of the technical scheme of the utility model are: the flange is used for reliable connection with the high-pressure external pipeline, and the sealing property and safety of the sampling process are ensured. The pressure reduction filter system is used for reducing the pressure of the natural gas and removing impurities in the natural gas, and the stability of the sampling process and the purity of the sample are ensured. The sampling system is used for rapid collection and storage of the sample. The evacuation pipeline is used for evacuating residual gas in the device after sampling is completed, and interference on the next sampling is avoided. Through reasonable structural design and operation process, safe sampling of the high-pressure natural gas is realized. The safety of the operator is ensured. Sampling steps are simplified, personnel participation is reduced, and operation difficulty is reduced, so that sampling efficiency is significantly improved.

[0011] Further, the pressure reduction filter system comprises a pressure reduction valve and a filter, the flange is connected with the filter through a pipeline, the filter is connected with the pressure reduction valve through a pipeline, and the pressure reduction valve is connected with the sampling system through a pipeline.

[0012] The beneficial effects of the above further technical scheme are: through accurate control of the operation of the pressure reduction valve and the sampling system, accurate control of the sampling pressure and sampling amount is realized, the accuracy of sampling is improved, the safety risk of the sampling process under high-pressure environment is reduced, and the safety of the personnel is ensured. At the same time, the filter removes impurities and periodically evacuates residual gas in the device, so that the purity of the sample and the normal operation of the sampling system are ensured.

[0013] Further, first and second pressure gauges are respectively installed on the pipelines on the two sides of the pressure reduction valve.

[0014] The beneficial effects of the above further technical scheme are: the first and second pressure gauges are provided, the pressure before and after the pressure reduction valve is detected, and the reliability of the natural gas manual sampling device is provided.

[0015] Further, a first ball valve is installed on the pipeline between the flange and the pressure reduction filter system.

[0016] The beneficial effects of the above further technical scheme are: the pipeline between the natural gas manual sampling device and the high-pressure external pipeline can be opened and closed according to actual needs.

[0017] Further, the sampling system comprises a second ball valve, a first quick connector, and a first manual sampling cylinder, the pressure reduction filter system is connected with the second ball valve through a pipeline, the second ball valve is connected with the first quick connector through a pipeline, the first quick connector is connected with the first manual sampling cylinder through a pipeline, the first manual sampling cylinder is connected with a second quick connector through a pipeline, and the second quick connector is connected with the evacuation pipeline through a pipeline.

[0018] The beneficial effects of the further technical scheme are that the quick connecting plug and the ball valve are used to simplify the sampling operation process and improve the operation efficiency.

[0019] Further, a flow meter is installed on the pipeline between the second ball valve and the first quick connecting plug.

[0020] The beneficial effects of the further technical scheme are that the flow meter is used to detect the flow and improve the reliability of the natural gas manual sampling device.

[0021] Further, a third ball valve is installed on the pipeline between the second ball valve and the first quick connecting plug; a fourth ball valve and a third pressure gauge are installed on the pipeline between the second quick connecting plug and the emptying pipeline.

[0022] The beneficial effects of the further technical scheme are that the ball valve is used to open and close the corresponding pipeline according to the actual needs, and the pressure gauge is used to detect the pressure of the corresponding pipeline.

[0023] Further, the second ball valve is connected with a third quick connecting plug through a pipeline, the third quick connecting plug is connected with a second manual sampling cylinder through a pipeline, the second manual sampling cylinder is connected with a fourth quick connecting plug through a pipeline, and the fourth quick connecting plug is connected with the emptying pipeline through a pipeline.

[0024] The beneficial effects of the further technical scheme are that the quick connecting plug and the ball valve are used to simplify the sampling operation process and improve the operation efficiency.

[0025] Further, a fifth ball valve is installed on the pipeline between the second ball valve and the third quick connecting plug; a sixth ball valve and a fourth pressure gauge are installed on the pipeline between the fourth quick connecting plug and the emptying pipeline.

[0026] The beneficial effects of the further technical scheme are that the ball valve is used to open and close the corresponding pipeline according to the actual needs, and the pressure gauge is used to detect the pressure of the corresponding pipeline.

[0027] Further, a check valve is installed on the emptying pipeline.

[0028] The beneficial effects of the further technical scheme are that the check valve is used to make the natural gas flow in one direction and prevent the natural gas from flowing back.

[0029] The advantages of the additional aspects of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The structure schematic view of the natural gas manual sampling device provided by the embodiment of the utility model.

[0031] Figure 2 The structure schematic view of the natural gas manual sampling device provided by the embodiment of the utility model.

[0032] The number of the drawing is explained: 1, flange; 2, pressure reducing filter system; 3, sampling system; 4, emptying pipeline; 5, pressure reducing valve; 6, filter; 7, first pressure gauge; 8, second pressure gauge; 9, first ball valve; 10, second ball valve; 11, first quick connector; 12, first manual sampling cylinder; 13, second quick connector; 14, flowmeter; 15, third ball valve; 16, fourth ball valve; 17, third pressure gauge; 18, third quick connector; 19, second manual sampling cylinder; 20, fourth quick connector; 21, fifth ball valve; 22, sixth ball valve; 23, fourth pressure gauge; 24, check valve. Specific implementation

[0033] The principle and characteristics of the utility model are described below in combination with the drawings, and the embodiment is only used to explain the utility model and is not used to limit the scope of the utility model.

[0034] As shown in Figure 1 and Figure 2 A natural gas manual sampling device, comprising: a flange 1, a pressure reducing filter system 2, a sampling system 3 and an emptying pipeline 4, the flange 1 is connected with the pressure reducing filter system 2 through a pipeline, the pressure reducing filter system 2 is connected with the sampling system 3 through a pipeline, and the sampling system 3 is connected with the emptying pipeline 4 through a pipeline.

[0035] The beneficial effects of the technical scheme of the utility model are: the flange is used for reliable connection with a high-pressure external delivery pipeline, ensuring the sealing property and safety of the sampling process. The pressure reducing filter system is used for reducing the pressure of natural gas and removing impurities therein, ensuring the stability of the sampling process and the purity of the sample. The sampling system is used for rapid collection and storage of the sample. The emptying pipeline is used for emptying residual gas in the device after sampling is completed, avoiding interference on the next sampling. Through reasonable structural design and operation process, safe sampling of high-pressure natural gas is realized. The safety of the operator is ensured. Sampling steps are simplified, personnel participation is reduced, and operation difficulty is reduced, thereby significantly improving sampling efficiency.

[0036] Among them, the pipeline can be a stainless steel pipe. The dashed box in the figure can be a natural gas manual sampling device.

[0037] The utility model discloses a purpose at providing a kind of safe, accurate, efficient manual sampling device (natural gas manual sampling device) under high pressure environment, specially aiming at the technical challenge faced in sampling process in natural gas station yard without installing online sampling analysis cabin.

[0038] Improve safety: by enhancing the pressure resistance and sealing performance of the device, reduce the risk of leakage during sampling process, ensure the safety of operating personnel.

[0039] Improve sampling efficiency: simplify sampling steps, reduce personnel participation, reduce operation difficulty, thereby significantly improve sampling efficiency.

[0040] Enhance data accuracy: optimize sampling process, reduce human error, ensure that the sample taken is representative, improve the accuracy of subsequent analysis results.

[0041] As shown in Figure 1 And Figure 2 Further, the pressure reducing filter system 2 includes a pressure reducing valve 5 and a filter 6, the flange 1 is connected with the filter 6 through a pipeline, the filter 6 is connected with the pressure reducing valve 5 through a pipeline, and the pressure reducing valve 5 is connected with the sampling system 3 through a pipeline.

[0042] The beneficial effects of the above further technical solutions are: by accurately controlling the operation of the pressure reducing valve and the sampling system, the sampling pressure and sampling volume are accurately controlled, the sampling accuracy is improved. Reduce the safety risk of sampling process under high pressure environment, protect the safety of personnel. At the same time, impurities are removed by filter and residual gas in the device is periodically emptied, to ensure the purity of sample and normal operation of sampling system.

[0043] The pressure reducing valve can be a two-stage pressure reducing valve.

[0044] As shown in Figure 1 And Figure 2 Further, a first pressure gauge 7 and a second pressure gauge 8 are installed on the pipelines on both sides of the pressure reducing valve 5.

[0045] The beneficial effects of the above further technical solutions are: the first pressure gauge and the second pressure gauge are provided, which facilitates the detection of the pressure before and after the pressure reducing valve, and provides the reliability of the natural gas manual sampling device.

[0046] As shown in Figure 1 And Figure 2 Further, a first ball valve 9 is installed on the pipeline between the flange 1 and the pressure reducing filter system 2.

[0047] The beneficial effect of the further technical scheme is that the pipeline between the natural gas manual sampling device and the high-pressure external pipeline can be opened or closed according to actual needs.

[0048] As shown in Figure 1 and Figure 2 , further, the sampling system 3 comprises a second ball valve 10, a first quick connector 11, and a first manual sampling cylinder 12. The pressure reduction and filtration system 2 is connected to the second ball valve 10 through a pipeline. The second ball valve 10 is connected to the first quick connector 11 through a pipeline. The first quick connector 11 is connected to the first manual sampling cylinder 12 through a pipeline. The first manual sampling cylinder 12 is connected to a second quick connector 13 through a pipeline. The second quick connector 13 is connected to the emptying pipeline 4 through a pipeline.

[0049] The beneficial effect of the further technical scheme is that the quick connector and the ball valve are used as quick connection components, which simplifies the sampling operation process and improves the operation efficiency. The manual sampling cylinder is convenient to install and maintain.

[0050] As shown in Figure 1 and Figure 2 , further, a flow meter 14 is installed on the pipeline between the second ball valve 10 and the first quick connector 11.

[0051] The beneficial effect of the further technical scheme is that the flow meter is used to detect the flow and improve the reliability of the natural gas manual sampling device.

[0052] As shown in Figure 1 and Figure 2 , further, a third ball valve 15 is installed on the pipeline between the second ball valve 10 and the first quick connector 11. A fourth ball valve 16 and a third pressure gauge 17 are installed on the pipeline between the second quick connector 13 and the emptying pipeline 4.

[0053] The beneficial effect of the further technical scheme is that the ball valve is used to open or close the corresponding pipeline according to actual needs. The pressure gauge is used to detect the pressure of the corresponding pipeline.

[0054] As shown in Figure 1 and Figure 2 , further, the second ball valve 10 is connected to a third quick connector 18 through a pipeline. The third quick connector 18 is connected to a second manual sampling cylinder 19 through a pipeline. The second manual sampling cylinder 19 is connected to a fourth quick connector 20 through a pipeline. The fourth quick connector 20 is connected to the emptying pipeline 4 through a pipeline.

[0055] The beneficial effect of the further technical scheme is that the quick connector and the ball valve are used to simplify the sampling operation process and improve the operation efficiency.

[0056] As shown in Figure 1 and Figure 2 Further, the fifth ball valve 21 is installed on the pipeline between the second ball valve 10 and the third quick connector 18; the sixth ball valve 22 and the fourth pressure gauge 23 are installed on the pipeline between the fourth quick connector 20 and the emptying pipeline 4.

[0057] The beneficial effect of the further technical scheme is that the ball valve is used to open and close the corresponding pipeline according to the actual needs, and the pressure gauge is used to detect the pressure of the corresponding pipeline.

[0058] As shown in Figure 1 and Figure 2 Further, the check valve 24 is installed on the emptying pipeline 4.

[0059] The beneficial effect of the further technical scheme is that the check valve is used to make the natural gas flow in one direction and prevent the natural gas from flowing back.

[0060] The utility model relates to natural gas sampling technical field, and particularly provide a kind of safe, accurate, efficient manual sampling device (natural gas manual sampling device) under high pressure environment and its use method.The device is applicable to natural gas station, and can ensure the safety of sampling process and sample representativeness.

[0061] 1) Technical scheme overview

[0062] The utility model provides a kind of natural gas manual sampling device, including flange connection mouth (flange 1), pressure reducing filter system, sampling system and emptying pipeline etc. core components.By reasonable structure design and operation process, the safe sampling of high-pressure natural gas is realized.

[0063] 2) System structure diagram explanation

[0064] System structure diagram details the structure layout of device.Flange connection mouth (flange) is used to connect with high-pressure external pipeline, and pressure reducing filter system includes pressure reducing valve and filter, for reducing pressure and removing impurities of high-pressure natural gas.Sampling system is composed of stainless steel pipe, second ball valve, quick connector (quick connector) and manual sampling cylinder, to realize sample collection and storage.Emptying pipeline is used to empty residual gas in device.

[0065] 3) Working principle and flow chart

[0066] The working principle and flow chart set forth the working process and key control points of the device. During the sampling process, first, connect the device with the high-pressure external pipeline through the flange connection port (flange), and check the integrity of each component. Then, open the pressure reducing valve for pressure reduction, and remove impurities through the filter. When the pressure-reduced natural gas meets the sampling requirements, open the second ball valve and quick connector of the sampling system (quick connector), so that the natural gas enters the manual sampling cylinder. After sampling is completed, close the relevant valves and quick connector, and empty the residual gas in the device through the emptying pipeline. Finally, remove the manual sampling cylinder, and complete the sampling operation.

[0067] 4) The natural gas manual sampling device can be installed in a housing, the front end of the housing is provided with a control panel, the size of the housing can be 400mm*300mm*600mm; the housing can be provided with a door, the size of the door can be 400*600mm. The use instruction is as follows:

[0068] (1) Preparation stage: confirm that all valves are in the closed state to ensure the safety of the device. Reliably connect the manual sampling cylinder, and open the valve of the manual sampling cylinder to prepare for sampling operation.

[0069] (2) Pressure reduction and filtration: open the SV1 valve (first ball valve), adjust the pressure reducing valve SR (pressure reducing valve), observe the reading of the pressure gauge SP2 (first and second pressure gauges), and adjust to the target pressure to complete pressure reduction. In this process, high-pressure natural gas passes through the filter to remove impurities, ensuring the purity of sampling.

[0070] (3) Replacement and sampling: open SV2 (second ball valve), SV3 (third ball valve), and SV4 valve (fourth ball valve) in sequence, adjust the knob of the flowmeter to the appropriate flow, and perform gas replacement. After 2 minutes of replacement, close the SV4 valve. When the pressure gauge SP3 (third pressure gauge) shows that the target pressure is reached, sequentially close the valve of the corresponding cylinder to complete the sampling operation.

[0071] (4) Second replacement and emptying: open SV5 (fifth ball valve) and SV6 valve (sixth ball valve) for second replacement to further remove impurities in the pipeline. Similarly, after 2 minutes of replacement, close the SV6 valve. When the pressure gauge SP4 (fourth pressure gauge) shows that the target pressure is reached, sequentially close the valve of the corresponding cylinder. Finally, open SV4 and SV6 valves to empty the gas in the pipeline, and close all valves.

[0072] (5) Finishing work: remove the sampling cylinder, disconnect the quick connection part, and complete the entire sampling process. At this time, the sampling device is ready for the next sampling operation.

[0073] In summary, the utility model provides a kind of safe, accurate, convenient high-pressure natural gas manual sampling device and its use method, provide strong support for the quality monitoring and safety production of natural gas station.

[0074] The utility model provides a kind of safe, accurate, efficient manual sampling device (natural gas manual sampling device) under high-pressure environment and its use method.The device (natural gas manual sampling device) includes flange connection mouth (flange), pressure reducing filter system, sampling system and emptying pipeline etc.

[0075] Specifically, flange connection mouth (flange) is used to reliably connect with high-pressure external pipeline, to ensure the sealing and safety of sampling process.Pressure reducing filter system includes pressure reducing valve and filter, which can effectively reduce the pressure of natural gas and remove impurities therein, to ensure the stability of sampling process and the purity of sample.Sampling system uses stainless steel pipe, ball valve, quick connector and manual sampling steel bottle etc., to realize the rapid collection and storage of sample.Emptying pipeline is used to empty the residual gas in the device after sampling, to avoid interference to next sampling.

[0076] In use method, the utility model realizes the safe and controllable and efficient sampling process by reasonable operation process and control point design.Before sampling, the integrity and connection state of each component are checked, to ensure the safety and reliability of device.During sampling process, the operation of pressure reducing valve and sampling system is accurately controlled, to realize the accurate control of sampling pressure and sampling amount.Meanwhile, impurities are removed by filter and residual gas in the device is emptied periodically, to ensure the purity of sample and the normal operation of sampling system.

[0077] The utility model has the following remarkable effects:

[0078] 1) high safety: by using pressure reducing valve and explosion-proof design, the utility model effectively reduces the safety risk of sampling process under high-pressure environment, to protect the safety of personnel.

[0079] 2) accurate sampling: by accurate pressure reducing valve and sampling system design, the utility model realizes the accurate control of sampling pressure and sampling amount, to improve the accuracy of sampling.Meanwhile, the use of filter effectively removes impurities in natural gas, to ensure the purity and representativeness of sample.

[0080] Convenient operation: the utility model uses quick connector (quick connector) and ball valve etc.

[0081] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A natural gas manual sampling device, characterized in that, It includes: Flange, pressure reducing filter system, sampling system and emptying pipeline, the flange is connected with the pressure reducing filter system through pipeline, the pressure reducing filter system is connected with the sampling system through pipeline, and the sampling system is connected with the emptying pipeline through pipeline.

2. A natural gas manual sampling device according to claim 1, wherein, The pressure reducing filter system comprises a pressure reducing valve and a filter, the flange is connected with the filter through pipeline, the filter is connected with the pressure reducing valve through pipeline, and the pressure reducing valve is connected with the sampling system through pipeline.

3. A natural gas manual sampling device according to claim 2, wherein, First pressure gauge and second pressure gauge are respectively installed on the pipelines on both sides of the pressure reducing valve.

4. The natural gas manual sampling apparatus of claim 1, wherein, A first ball valve is installed on the pipeline between the flange and the pressure reducing filter system.

5. The natural gas manual sampling apparatus of claim 1, wherein, The sampling system comprises a second ball valve, a first quick connector, and a first manual sampling cylinder, the pressure reducing filter system is connected with the second ball valve through pipeline, the second ball valve is connected with the first quick connector through pipeline, the first quick connector is connected with the first manual sampling cylinder through pipeline, the first manual sampling cylinder is connected with a second quick connector through pipeline, and the second quick connector is connected with the emptying pipeline through pipeline.

6. A natural gas manual sampling device according to claim 5, wherein, A flow meter is installed on the pipeline between the second ball valve and the first quick connector.

7. A natural gas manual sampling device according to claim 5, wherein, A third ball valve is installed on the pipeline between the second ball valve and the first quick connector, and a fourth ball valve and a third pressure gauge are installed on the pipeline between the second quick connector and the emptying pipeline.

8. A natural gas manual sampling device according to claim 5, wherein, The second ball valve is connected with a third quick connector through pipeline, the third quick connector is connected with a second manual sampling cylinder through pipeline, the second manual sampling cylinder is connected with a fourth quick connector through pipeline, and the fourth quick connector is connected with the emptying pipeline through pipeline.

9. A natural gas manual sampling device according to claim 8, wherein, A fifth ball valve is installed on the pipeline between the second ball valve and the third quick connector, and a sixth ball valve and a fourth pressure gauge are installed on the pipeline between the fourth quick connector and the emptying pipeline.

10. A natural gas manual sampling device according to claim 8, wherein, A check valve is installed on the emptying pipeline.

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