Device for adjusting water content in natural gas in analysis process

Abstract

The utility model relates to a device for adjusting the water content in natural gas in an analysis process, which comprises a first pipeline, a second pipeline, an adjustable multi-stage humidifying system, a free water removing device and a water dew point instrument, and the exhaust end of the adjustable multi-stage humidifying system and the gas inlet end of the free water removing device are sequentially connected in series; one end of the second pipeline is connected with the air inlet end of the adjustable multi-stage humidification system, the exhaust end of the free water removal device is connected with the air inlet end of the water dew point instrument through a third pipeline, and one end of the first pipeline is connected with the air inlet end of the water dew point instrument; and the other end of the first pipeline and the other end of the second pipeline are respectively connected with a natural gas source. The device has the advantages that the structural design is simple and reasonable, the functions of non-humidification, single-pole humidification or multi-stage humidification of natural gas sample introduction can be realized, and different water dew point test comparison is completed by changing the water content in natural gas.

Description

Technical Field

[0001] The utility model relates to a natural gas water content analysis technology, in particular to a device for regulating the water content in natural gas during the analysis process. Background Art

[0002] With the construction of a multi-gas source mixed transmission system under the "One Network Nationwide", different gas sources have different water contents, which affects the quality control and safe operation of natural gas. If the on-site natural gas water dew point measurement is inaccurate, there is a risk of ice blockage and equipment damage.

[0003] At present, the measurement of water dew point in on-site gas quality analysis mainly relies on the continuous detection of on-site online water dew point meters and the use of portable water dew point meters for on-site sampling and detection. Whether the online water dew point meter is accurate usually needs to be disassembled for inspection. For online water dew point meters that are inconvenient to disassemble, a calibrated portable water dew point meter is usually used as a standard to perform a comparison test on natural gas from the same gas source to verify its accuracy. Since the gas source is relatively stable during the comparison test, the final measurement result only verifies the data corresponding to the current water content, and cannot verify whether the water dew point meter is accurate after the water content changes.

[0004] At the same time, the existing testing equipment has the following disadvantages: first, the calibration of the online water dew point meter requires disassembly, which is difficult to operate; second, in the comparison test of the water dew point meter, since the gas source is relatively stable during the period, the final measurement result only verifies the data corresponding to the current water content, and cannot verify whether the water dew point meter is accurate after the water content changes.

[0005] Based on this, it is necessary to develop a new technology for regulating and analyzing the water content in process natural gas. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a device for adjusting the water content in natural gas during the analysis process, which effectively overcomes the defects of the prior art.

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] A device for regulating the water content in natural gas during an analysis process comprises a first pipeline, a second pipeline, an adjustable multi-stage humidification system, a free water removal device and a water dew point meter, wherein the exhaust end of the adjustable multi-stage humidification system and the air inlet end of the free water removal device are connected in series in sequence, one end of the second pipeline is connected to the air inlet end of the adjustable multi-stage humidification system, the exhaust end of the free water removal device is connected to the air inlet end of the water dew point meter via a third pipeline, one end of the first pipeline is connected to the air inlet end of the water dew point meter, and the other end of the first pipeline and the other end of the second pipeline are respectively connected to a natural gas source.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the other ends of the first pipeline and the second pipeline are respectively connected to two interfaces of the first three-way valve, and the remaining interface of the first three-way valve constitutes a natural gas inlet and is connected to a natural gas source.

[0011] Furthermore, the adjustable multi-stage humidification system includes a primary humidifier and a secondary humidifier, the moisture outlet of the primary humidifier and the air inlet end of the free water removal device are connected through a fourth pipeline, the gas inlet of the primary humidifier is connected to one end of the second pipeline, the gas inlet of the secondary humidifier is connected to the fourth pipeline through a first branch pipeline, and the moisture outlet of the secondary humidifier is connected to the air inlet end of the free water removal device through a second branch pipeline.

[0012] Furthermore, a second three-way valve is connected in series to the fourth pipeline, and the gas inlet of the secondary humidifier is connected to the remaining interface of the second three-way valve through the first branch pipeline.

[0013] Furthermore, a first one-way valve is provided on the second branch pipeline.

[0014] Furthermore, it also includes a fluid infusion pipeline, which includes a first fluid infusion tube, a second fluid infusion tube, a third fluid infusion tube and a third three-way valve, one end of the first fluid infusion tube and the second fluid infusion tube are respectively connected to two of the interfaces of the third three-way valve, the other ends of the first fluid infusion tube and the second fluid infusion tube are respectively connected to the fluid infusion ports of the first-level humidifier and the second-level humidifier, and one end of the third fluid infusion tube is connected to the remaining interface of the third three-way valve.

[0015] Furthermore, the first-stage humidifier and the second-stage humidifier are both bubbling humidifiers.

[0016] Furthermore, the third pipeline and the first pipeline are respectively connected to one end of the test main pipe, and the other end of the test main pipe is connected to the air inlet end of the water dew point instrument.

[0017] Furthermore, flow valves are respectively provided on the test main pipe and the first pipeline.

[0018] Furthermore, a second one-way valve is provided on the third pipeline.

[0019] The beneficial effects of the utility model are: the structural design is simple and reasonable, and the functions of natural gas sampling without humidification, single-stage humidification or multi-stage humidification can be realized, and different water dew point test comparisons can be completed by changing the water content in the natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the structure of the device for regulating the water content in natural gas during the analysis process of the utility model;

[0021] Figure 2 The present invention is a schematic structural diagram of another embodiment of the device for regulating the water content in natural gas during the analysis process.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. First pipeline; 2. Second pipeline; 3. Adjustable multi-stage humidification system; 4. Free water removal device; 5. Water dew point meter; 6. First three-way valve; 7. Fourth pipeline; 8. Second three-way valve; 10. Test main pipe; 31. First-stage humidifier; 32. Second-stage humidifier; 41. Third pipeline; 61. Second one-way valve; 91. First one-way valve; 101. First liquid replenishment pipe; 102. Second liquid replenishment pipe; 103. Third liquid replenishment pipe; 104. Third three-way valve; 201. Flow valve. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] Example: Figure 1 As shown, the device for regulating the water content in natural gas during the analysis process of this embodiment includes a first pipeline 1, a second pipeline 2, an adjustable multi-stage humidification system 3, a free water removal device 4 and a water dew point meter 5, the exhaust end of the adjustable multi-stage humidification system 3 and the air inlet end of the free water removal device 4 are connected in series in sequence, one end of the second pipeline 2 is connected to the air inlet end of the adjustable multi-stage humidification system 3, the exhaust end of the free water removal device 4 is connected to the air inlet end of the water dew point meter 5 through a third pipeline 41, one end of the first pipeline 1 is connected to the air inlet end of the water dew point meter 5, and the other end of the first pipeline 1 and the other end of the second pipeline 2 are respectively connected to a natural gas source.

[0026] In the device for regulating and analyzing the water content in natural gas in this embodiment, the natural gas source can be directly connected to the water dew point meter 5 through the first pipeline 1 to perform water dew point test under non-humidification conditions, or it can be connected to the adjustable multi-stage humidification system 3 through the second pipeline 2, and then the adjustable multi-stage humidification system 3 can be used to adjust the single-stage humidification or multi-stage humidification to achieve single-stage or multi-stage humidification of natural gas to change the water content in natural gas, thereby completing different water dew point tests and comparisons. At the same time, after humidification, the free water in the natural gas is removed by the free water removal device 4, and finally the natural gas is passed to the water dew point meter 5 for testing, and the test comparison results of different water contents can be obtained. In addition, the device can also be used in the online calibration of online water dew point meters in conjunction with the water dew point meter standard device, which can effectively reduce the workload of disassembling online water dew point meters.

[0027] In this embodiment, the water dew point meter 5 is a product of the prior art, and an appropriate model can be flexibly configured according to needs during actual use, which will not be elaborated here.

[0028] As a preferred embodiment, the other ends of the first pipeline 1 and the second pipeline 2 are respectively connected to two interfaces of the first three-way valve 6, and the remaining interface of the first three-way valve 6 constitutes a natural gas inlet and is connected to a natural gas source.

[0029] In the above embodiment, the first pipeline 1 and the second pipeline 2 are connected in parallel, and the other ends of the two are connected to a first three-way valve 6. By adjusting the first three-way valve 6, the natural gas source can flow to the first pipeline 1 or the second pipeline 2, thereby realizing non-humidification or different levels of humidification operation, and the operation is more flexible.

[0030] As a preferred embodiment, the adjustable multi-stage humidification system 3 includes a primary humidifier 31 and a secondary humidifier 32, the moisture outlet of the primary humidifier 31 and the air inlet of the free water removal device 4 are connected through a fourth pipeline 7, the gas inlet of the primary humidifier 31 is connected to one end of the second pipeline 2, the gas inlet of the secondary humidifier 32 is connected to the fourth pipeline 7 through a first branch pipeline, and the moisture outlet of the secondary humidifier 32 is connected to the air inlet of the free water removal device 4 through a second branch pipeline.

[0031] In the above embodiment, the adjustable multi-stage humidification system 3 can realize one-stage humidification or two-stage humidification. Specifically, when one-stage humidification is required, the passages of the first branch pipeline and the second branch pipeline are closed, and the second pipeline 2 of the natural gas well enters the first-stage humidifier 31 for humidification, and then leads to the free water removal device 4 to remove free water, and then enters the water dew point meter 5 for testing; when two-stage humidification is required, the passages of the first branch pipeline and the second branch pipeline are opened, and the passage of the pipe section between the fourth pipeline 7 and the free water removal device 4 is closed. The natural gas is humidified by the first-stage humidifier 31, and then enters the second-stage humidifier 32 for humidification, and then leads to the free water removal device 4 to remove free water, and then enters the water dew point meter 5 for testing. The operation is also more flexible.

[0032] In this embodiment, a second three-way valve 8 is connected in series on the fourth pipeline 7, and the gas inlet of the second humidifier 32 is connected to the remaining interface of the second three-way valve 8 through the first branch pipeline. When one-stage humidification is required, the second three-way valve 8 is operated to close the passage leading to the first branch pipeline, and the natural gas well first-stage humidifier 31 is humidified and then leads to the free water removal device 4 through the fourth pipeline 7; when two-stage humidification is performed, the second three-way valve 8 is operated to control the passage between the fourth pipeline 7 and the first branch pipeline to be opened, and the natural gas will successively pass through the first humidifier 31 and the second humidifier 32. The operation process only needs to adjust the second three-way valve 8, which is very convenient and quick.

[0033] In this embodiment, the second branch pipeline is provided with a first one-way valve 91. The first one-way valve 91 prevents natural gas from flowing back.

[0034] As a preferred embodiment, Figure 2 As shown, it also includes a fluid infusion pipeline, which includes a first fluid infusion tube 101, a second fluid infusion tube 102, a third fluid infusion tube 103 and a third three-way valve 104. One ends of the first fluid infusion tube 101 and the second fluid infusion tube 102 are respectively connected to two of the interfaces of the third three-way valve 104, and the other ends of the first fluid infusion tube 101 and the second fluid infusion tube 102 are respectively connected to the fluid infusion ports of the first-level humidifier 31 and the second-level humidifier 32, and one end of the third fluid infusion tube 103 is connected to the remaining interface of the third three-way valve 104.

[0035] In the above embodiment, when the first-stage humidifier 31 and the second-stage humidifier 32 need to be replenished with water, liquid is introduced through the third liquid replenishment pipe 103, and then the third three-way valve 104 is adjusted to replenish water to the first liquid replenishment pipe 101 and the second liquid replenishment pipe 102 respectively. The liquid will enter the first-stage humidifier 31 and the second-stage humidifier 32, and the operation is very simple.

[0036] In this embodiment, the first-stage humidifier 31 and the second-stage humidifier 32 are both bubbling humidifiers of suitable models available on the market.

[0037] In this embodiment, the third pipeline 41 and the first pipeline 1 are respectively connected to one end of the test main pipe 10, and the other end of the test main pipe 10 is connected to the air inlet end of the water dew point meter 5. In this solution, the third pipeline 41 and the first pipeline 1 are connected in parallel to the test main pipe 10, and the pipeline layout is relatively simple.

[0038] In this embodiment, the test main pipe 10 and the first pipeline 1 are respectively provided with flow valves 201. The flow valve 201 can adjust the flow of natural gas in the pipeline, which is beneficial to the subsequent water content detection.

[0039] In this embodiment, a second one-way valve 61 is provided on the third pipeline 41. The second one-way valve 61 is provided to prevent the natural gas from flowing back.

[0040] In this embodiment, the free water removal device 4 can be a joint station free water remover available on the market, or a gas-liquid separator of a suitable model available on the market.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A device for adjusting the water content in natural gas during analysis, characterized in that: The invention comprises a first pipeline (1), a second pipeline (2), an adjustable multi-stage humidification system (3), a free water removal device (4) and a water dew point meter (5); the exhaust end of the adjustable multi-stage humidification system (3) and the air inlet end of the free water removal device (4) are connected in series in sequence; one end of the second pipeline (2) is connected to the air inlet end of the adjustable multi-stage humidification system (3); the exhaust end of the free water removal device (4) is connected to the air inlet end of the water dew point meter (5) through a third pipeline (41); one end of the first pipeline (1) is connected to the air inlet end of the water dew point meter (5); and the other end of the first pipeline (1) and the other end of the second pipeline (2) are respectively connected to a natural gas source.

2. The device for adjusting the water content in natural gas during analysis according to claim 1, characterized in that: The other ends of the first pipeline (1) and the second pipeline (2) are respectively connected to two interfaces of the first three-way valve (6), and the remaining interface of the first three-way valve (6) constitutes a natural gas inlet and is connected to a natural gas source.

3. The device for adjusting the water content in natural gas during analysis according to claim 1, characterized in that: The adjustable multi-stage humidification system (3) comprises a primary humidifier (31) and a secondary humidifier (32); the moisture outlet of the primary humidifier (31) and the air inlet of the free water removal device (4) are connected via a fourth pipeline (7); the gas inlet of the primary humidifier (31) is connected to one end of the second pipeline (2); the gas inlet of the secondary humidifier (32) is connected to the fourth pipeline (7) via a first branch pipeline; and the moisture outlet of the secondary humidifier (32) is connected to the air inlet of the free water removal device (4) via a second branch pipeline.

4. The device for adjusting the water content in natural gas during analysis according to claim 3, characterized in that: The fourth pipeline (7) is connected in series with a second three-way valve (8), and the gas inlet of the secondary humidifier (32) is connected to the remaining interface of the second three-way valve (8) through a first branch pipeline.

5. The device for adjusting the water content in natural gas during analysis according to claim 3, characterized in that: A first one-way valve (91) is provided on the second branch pipeline.

6. The device for adjusting the water content in natural gas during analysis according to claim 3, characterized in that: The invention also includes a fluid infusion pipeline, which includes a first fluid infusion tube (101), a second fluid infusion tube (102), a third fluid infusion tube (103) and a third three-way valve (104), one end of the first fluid infusion tube (101) and the second fluid infusion tube (102) are respectively connected to two interfaces of the third three-way valve (104), the other ends of the first fluid infusion tube (101) and the second fluid infusion tube (102) are respectively connected to the fluid infusion ports of the first-stage humidifier (31) and the second-stage humidifier (32), and one end of the third fluid infusion tube (103) is connected to the remaining interface of the third three-way valve (104).

7. The device for adjusting the water content in natural gas during analysis according to claim 3, characterized in that: The primary humidifier (31) and the secondary humidifier (32) are both bubbling humidifiers.

8. The device for adjusting the water content in natural gas during analysis according to claim 3, characterized in that: The third pipeline (41) and the first pipeline (1) are respectively connected to one end of the test main pipe (10), and the other end of the test main pipe (10) is connected to the air inlet end of the water dew point meter (5).

9. The device for adjusting the water content in natural gas during analysis according to claim 8, characterized in that: The test main pipe (10) and the first pipeline (1) are respectively provided with flow valves (201).

10. The device for adjusting the water content in natural gas during analysis according to any one of claims 1 to 9, characterized in that: The third pipeline (41) is provided with a second one-way valve (61).

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