Water dew point instrument front-end gas treatment mechanism

Abstract

The utility model relates to gas filter technical field, concretely relates to a water dew point appearance front end gas treatment mechanism, including the casing, is equipped with the air inlet pipe, the air outlet pipe, the cleaning pipe and the blowdown pipe on the casing, the cleaning pipe connects the clean gas supply mechanism, and the casing cross section is circular, filter core structure, filter core structure includes filter plate and netted filter core, netted filter core connects filter plate bottom, and filter plate divides the inside space of casing into first chamber and second chamber, and the blowdown pipe is connected with first chamber bottom, and the air outlet pipe and cleaning pipe are connected with second chamber respectively, and the air inlet pipe is communicated with first chamber tangentially. Can effectively remove the foam in the gas, reduce the possibility of water dew point appearance pollution and damage, prolong the service life of water dew point appearance, improve the detection data accuracy, simultaneously, through the cleaning pipe can carry out the reverse flushing to filter core structure, and the filtered liquid and impurity, clean gas can be exported from the blowdown pipe, make filter core structure not easy to block, long service life, and the filtering effect is better.

Description

Technical Field

[0001] This utility model relates to the field of gas filtration technology, and in particular to a front-end gas treatment mechanism for a water dew point meter. Background Technology

[0002] In the process of natural gas transportation, dew point meters are generally used to detect the dew point temperature of natural gas to ensure that the quality of the transported natural gas meets the requirements for transportation and trade. Existing dew point meters filter and purify gas samples through a filter element installed on the pressure-conducting tube at the front end of the detection chip during sampling and testing. However, in actual use, it has been found that existing gas wells often add foaming agents during production to improve the liquid-carrying capacity of natural gas and reduce water accumulation in the well. The extracted natural gas also needs to pass through a triethylene glycol skid for moisture removal, resulting in a significant amount of air bubbles and triethylene glycol impurities in the gas sample. This contaminates and damages the dew point meter filter element and even the detection chip, affecting the lifespan of the dew point meter and easily leading to distorted detection data. Utility Model Content

[0003] The purpose of this invention is to overcome the technical problem that the natural gas entering the water dew point meter contains a lot of bubbles and triethylene glycol impurities, which affects the service life of the water dew point meter and leads to distorted detection data. The invention provides a front-end gas processing mechanism for a water dew point meter.

[0004] This utility model provides a front-end gas processing mechanism for a water dew point meter, including...

[0005] The housing is provided with an air inlet pipe, an air outlet pipe, a cleaning pipe and a sewage discharge pipe, the cleaning pipe is connected to a clean gas supply mechanism, and the housing has a circular cross-section;

[0006] The filter element structure includes a filter plate and a mesh filter element. The mesh filter element is connected to the bottom of the filter plate. The filter plate divides the internal space of the housing into a first chamber and a second chamber. The drain pipe is connected to the bottom of the first chamber. The air outlet pipe and the cleaning pipe are respectively connected to the second chamber. The air inlet pipe is tangentially connected to the first chamber.

[0007] This utility model discloses a front-end gas processing mechanism for a water dew point meter. Through a filter element structure, it filters impurities from natural gas, effectively removing foam from the gas, reducing the possibility of contamination and damage to the water dew point meter, extending its service life, and improving the accuracy of detection data. At the same time, a cleaning pipe can supply clean gas to the second chamber to backwash the filter element structure. The filtered liquid, impurities, and cleaning gas can be output from the drain pipe, making the filter element structure less prone to clogging, extending its service life, and improving the filtration effect.

[0008] Preferably, the filter plate is inclined within the housing. This allows droplets and impurities in the gas to fall downwards more easily after being blocked by the filter element structure and discharged through the drain pipe.

[0009] Preferably, the inlet pipe, outlet pipe, cleaning pipe, and drain pipe are each equipped with a switching valve, and at least one of the switching valves includes a needle valve. The gas pressure in the corresponding pipe can be adjusted according to the actual situation.

[0010] Preferably, the filter plate has several through holes, and the mesh filter element includes several layers of filter mesh arranged in a structural configuration, with the mesh filter element partially filling the first chamber. The combination of the filter plate and the mesh filter element can extend the gas travel path, allowing foam droplets to be fully filtered out.

[0011] Preferably, the inner wall of the first chamber is partially ellipsoidal. This allows the filtered foam droplets and impurities to collect smoothly and be easily discharged.

[0012] Preferably, it also includes a membrane filtration mechanism, which includes a housing, a membrane filter element disposed inside the housing, an outlet pipe disposed at the top of the housing, and the second chamber connected to the bottom of the housing via a connecting pipe, the connecting pipe being equipped with a switch valve. This allows triethylene glycol in the natural gas to be removed by the membrane filtration mechanism, reducing its impact on the water dew point meter's detection results.

[0013] Preferably, the housing includes a first body and a first cover, which are detachably connected. The outer shell includes a second body and a second cover, which are detachably connected. The second body and the first cover are connected via a connecting pipe. The first and second covers can be opened as needed to facilitate the replacement of the membrane filtration mechanism and filter element structure.

[0014] Preferably, a bracket is provided between the outer casing and the housing, and a support is provided at the bottom of the outer casing. This improves the overall structural stability of the gas processing mechanism.

[0015] Preferably, the housing is equipped with a temperature monitoring mechanism for monitoring the gas temperature after passing through the membrane filtration mechanism, and a pressure monitoring mechanism for monitoring the gas pressure inside the second chamber. Through temperature and pressure monitoring, data on the working status of the filtration structure can be displayed, allowing operators to promptly ascertain the clogging status of the filter element and the state of the gas entering the dew point meter.

[0016] Preferably, the outer casing is equipped with a heat exchange mechanism. This allows for temperature adjustment before the gas enters the water dew point meter, making the meter's detection structure more accurate.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model provides a front-end gas processing mechanism for a water dew point meter. Through a filter element structure, impurities are filtered out from natural gas, which can effectively remove foam from the gas, reduce the possibility of contamination and damage to the water dew point meter, extend the service life of the water dew point meter, and improve the accuracy of detection data.

[0019] 2. This utility model provides a front-end gas treatment mechanism for a water dew point meter. Clean gas can be supplied to the second chamber through the cleaning pipe to back-swept the filter element structure. The filtered liquid and impurities, as well as the cleaning gas, can be output from the drain pipe, making the filter element structure less prone to clogging, extending its service life, and improving the filtration effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front-end gas processing mechanism of a water dew point meter according to Example 1.

[0021] Figure 2 This is a schematic diagram of the front-end gas processing mechanism of a water dew point meter in Example 2.

[0022] Marked in the image:

[0023] 1-Shell, 11-First chamber, 12-Second chamber, 13-First body, 14-First cover

[0024] 2-Inlet pipe, 3-Outlet pipe, 4-Cleaning pipe, 5-Drain pipe

[0025] 6-Filter element structure, 61-Filter plate, 62-Mesh filter element,

[0026] 7-Switch valve,

[0027] 8-Membrane filtration mechanism, 81-Outer shell, 811-Second body, 812-Second cover, 82-Membrane filter element.

[0028] 9-Connecting pipe, 10-Bracket, 20-Support, 30-Temperature monitoring mechanism, 40-Pressure monitoring mechanism. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0030] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0032] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0033] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0034] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0035] Example 1

[0036] like Figure 1 As shown, a front-end gas processing mechanism for a water dew point meter includes a housing 1 and a filter element structure 6. The housing 1 is provided with an inlet pipe 2, an outlet pipe 3, a cleaning pipe 4, and a drain pipe 5. The cleaning pipe 4 is connected to a clean gas supply mechanism. The housing 1 has a circular cross-section. The filter element structure 6 includes a filter plate 61 and a mesh filter element 62. The mesh filter element 62 is connected to the bottom of the filter plate 61. The filter plate 61 divides the internal space of the housing 1 into a first chamber 11 and a second chamber 12. The drain pipe 5 is connected to the bottom of the first chamber 11. The outlet pipe 3 and the cleaning pipe 4 are respectively connected to the second chamber 12. The inlet pipe 2 is tangentially connected to the first chamber 11.

[0037] The housing 1 is a container structure for gas treatment. The inlet pipe 2 is a pipe structure for introducing the gas sample to be tested into the housing 1. The outlet pipe 3 is a pipe structure for leading the treated gas out of the housing 1 and connecting it to the water dew point meter. The cleaning pipe 4 is a pipe structure for introducing clean airflow into the housing 1 for back cleaning of the filter element structure 6. The drain pipe 5 is a pipe structure for discharging impurities and liquids filtered out by the filter element structure 6 into the housing 1.

[0038] In an optional embodiment, the housing 1 can be a stainless steel metal structure that can withstand the pressure during the natural gas detection process and is easy to manufacture. The volume of the housing 1 can be adjusted according to the actual gas sample source.

[0039] In an optional embodiment, the air inlet pipe 2, air outlet pipe 3, cleaning pipe 4 and sewage pipe 5 are each equipped with a switch valve 7, so as to control the opening and closing of each pipe structure and the diameter of each pipe structure. The opening and closing of the pipe structure controls the corresponding air inlet or outlet, and the diameter of the pipe structure is adjusted to control the airflow pressure of the corresponding air inlet or outlet, so as to avoid excessive pressure from damaging the water dew point meter or causing errors in the test results.

[0040] In an optional embodiment, the switching valve 7 can be a needle valve. Needle valves are low in cost, widely used, and can withstand pressures of 10MPa - 64MPa, which is sufficient to meet the safety requirements of natural gas water dew point meter detection, and are easy to operate.

[0041] In an optional embodiment, the filter plate 61 can be inclined inside the housing 1, and the air inlet pipe 2 can be located below the filter plate 61 and allow air to enter laterally. After the airflow entering the air inlet pipe 2 is blocked by the filter plate 61, the filtered droplets and impurities can fall downward more easily along the inclined direction of the filter plate 61 and be output from the drain pipe 5.

[0042] In an optional embodiment, the filter plate 61 can be a perforated plate structure with several through holes. The diameter of the through holes can be set to be relatively small according to the actual situation. The mesh filter element 62 can be a structural component formed by stacking multiple layers of fine filter mesh. The structure of the stacked mesh filter element 62 has a certain thickness and can partially fill the first chamber 11, extending the gas passage path so that the gas entering the first chamber 11 can be fully filtered by the filter element structure 6, and the foam droplets in it can be fully filtered out.

[0043] In an optional embodiment, the inner wall of the first chamber 11 can be configured as a partial ellipsoid, that is, the lower half of the first chamber 11 has a smooth structure with a cross-section that gradually decreases from top to bottom, which allows the filtered foam droplets and impurities to flow smoothly down the inner wall of the first chamber 11 and collect, making it convenient to be discharged from the drain pipe 5.

[0044] This embodiment of a water dew point meter front-end gas processing mechanism uses a filter element structure 6 to filter impurities from natural gas, effectively removing foam from the gas, reducing the possibility of contamination and damage to the water dew point meter, extending its service life, and improving the accuracy of detection data. At the same time, clean gas can be supplied to the second chamber 12 through the cleaning pipe 4 to backwash the filter element structure 6. The filtered liquid and impurities, as well as the cleaning gas, can be output from the drain pipe 5, making the filter element structure 6 less prone to clogging, extending its service life, and improving the filtration effect.

[0045] Example 2

[0046] like Figure 2 As shown, a front-end gas processing mechanism for a water dew point meter, based on embodiment 1, further includes a membrane filtration mechanism 8. The membrane filtration mechanism 8 includes a housing 81, a membrane filter element 82 inside the housing 81, an outlet pipe 3 located at the top of the housing 81, and a second chamber 12 connected to the bottom of the housing 81 via a connecting pipe 9. A switch valve 7 is provided on the connecting pipe 9.

[0047] The membrane filtration unit 8 is used to remove triethylene glycol from the gas output from the second chamber 12 through the membrane filter element 82 therein.

[0048] In an optional embodiment, the housing 1 may include a first body 13 and a first cover 14, which are detachably connected. The outer shell 81 may include a second body 811 and a second cover 812, which are detachably connected. The second body 811 and the first cover 14 are connected through a connecting pipe 9. The first cover 14 and the second cover 812 can be opened as needed to facilitate the replacement of the membrane filtration mechanism 8 and the filter element structure 6.

[0049] In an optional embodiment, the first body 13 and the first cover 14 can be connected by a flange, and the second body 811 and the second cover 812 can be connected by a flange. When the housing 1 and the outer shell 81 have a small structural volume, a threaded connection can also be used to facilitate the replacement of the filter element structure 6 and the membrane filtration mechanism 8.

[0050] In an optional embodiment, the membrane filter element 82 can be a polytetrafluoroethylene membrane filter element, a polypropylene membrane filter element, etc., and can be made into an appropriate shape and thickness according to actual conditions.

[0051] In an optional embodiment, a bracket 10 can be provided between the outer casing 81 and the housing 1, and a support 20 can be provided at the bottom of the outer casing 81. This improves the overall structural stability of the gas processing mechanism. The bracket 10 and the support 20 can be steel frame structures or other structural components with certain supporting functions, depending on the actual situation.

[0052] In an optional embodiment, the housing 81 may be equipped with a temperature monitoring mechanism 30, which is used to monitor the gas temperature after passing through the membrane filtration mechanism 8. The housing 1 may be equipped with a pressure monitoring mechanism 40, which is used to monitor the gas pressure in the second chamber 12. Through temperature and pressure monitoring, data display of the working status of the filtration structure can be provided, enabling personnel to promptly know the clogging status of the filter element structure 6 and the state of the gas entering the water dew point meter.

[0053] In an optional embodiment, the temperature monitoring mechanism 30 may be located inside or extend into the housing 81, and the pressure monitoring mechanism 40 may be located inside or extend into the housing 1, and can be adapted to the actual structural components used.

[0054] In an optional embodiment, the outer casing 81 may be equipped with a heat exchange mechanism, which can be linked with the temperature monitoring mechanism 30 to adjust the temperature before the gas enters the water dew point meter according to actual conditions, thereby making the detection structure of the water dew point meter more accurate.

[0055] In an optional embodiment, the heat exchange mechanism can be a water bath heating chamber, in which the outer shell 81 is immersed and heated or cooled by the treated flowing water, so that the gas after passing through the membrane filtration mechanism 8 can have a temperature suitable for detection by a water dew point meter.

[0056] This embodiment of a water dew point meter front-end gas processing mechanism, while filtering out foam and droplets through the filter element structure 6, also removes triethylene glycol from natural gas through the membrane filtration mechanism 8, further reducing the possibility of impurities in natural gas contaminating and damaging the water dew point meter, extending the service life of the water dew point meter, improving the accuracy of detection data, and reducing the impact on the detection results of the water dew point meter.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A front-end gas processing mechanism for a water dew point meter, characterized in that, include The housing (1) is provided with an air inlet pipe (2), an air outlet pipe (3), a cleaning pipe (4) and a sewage pipe (5). The cleaning pipe (4) is connected to a clean gas supply mechanism. The housing (1) has a circular cross-section. The filter element structure (6) includes a filter plate (61) and a mesh filter element (62). The mesh filter element (62) is connected to the bottom of the filter plate (61). The filter plate (61) divides the internal space of the housing (1) into a first chamber (11) and a second chamber (12). The drain pipe (5) is connected to the bottom of the first chamber (11). The air outlet pipe (3) and the cleaning pipe (4) are respectively connected to the second chamber (12). The air inlet pipe (2) is tangentially connected to the first chamber (11).

2. The front-end gas processing mechanism of a water dew point meter according to claim 1, characterized in that, The filter plate (61) is inclinedly disposed inside the housing (1).

3. The gas processing mechanism at the front end of a water dew point meter according to claim 1, characterized in that, The air inlet pipe (2), air outlet pipe (3), cleaning pipe (4) and sewage pipe (5) are each equipped with a switch valve (7), and at least one of the switch valves (7) includes a needle valve.

4. The front-end gas processing mechanism of a water dew point meter according to claim 1, characterized in that, The filter plate (61) is provided with several through holes, and the mesh filter element (62) includes several structural components with multiple filter meshes stacked together. The mesh filter element (62) partially fills the first chamber (11).

5. The front-end gas processing mechanism of a water dew point meter according to claim 4, characterized in that, The inner wall of the first chamber (11) is set to a local ellipsoid.

6. A front-end gas processing mechanism for a water dew point meter according to any one of claims 1-5, characterized in that, It also includes a membrane filtration mechanism (8), which includes a housing (81), a membrane filter element (82) inside the housing (81), an air outlet pipe (3) located at the top of the housing (81), and the second chamber (12) connected to the bottom of the housing (81) via a connecting pipe (9), and a switch valve (7) provided on the connecting pipe (9).

7. The front-end gas processing mechanism of a water dew point meter according to claim 6, characterized in that, The housing (1) includes a first body (13) and a first cover (14), which are detachably connected. The outer shell (81) includes a second body (811) and a second cover (812), which are detachably connected. The second body (811) and the first cover (14) are connected through the connecting pipe (9).

8. The front-end gas processing mechanism of a water dew point meter according to claim 7, characterized in that, A bracket (10) is provided between the outer shell (81) and the housing (1), and a support (20) is provided at the bottom of the outer shell (81).

9. The front-end gas processing mechanism of a water dew point meter according to claim 7, characterized in that, The outer shell (81) is provided with a temperature monitoring mechanism (30), which is used to monitor the gas temperature after passing through the membrane filter mechanism (8). The outer shell (1) is provided with a pressure monitoring mechanism (40), which is used to monitor the gas pressure in the second chamber (12).

10. The front-end gas processing mechanism of a water dew point meter according to claim 7, characterized in that, The outer casing (81) is provided with a heat exchange mechanism.

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