Gas chromatography sample gas drying device

Abstract

According to the gas chromatography sample gas drying device, a pipe body comprises a first opening formed in the bottom end, a second opening formed in the top end, a gas inlet cover connected with the first opening in a sealed mode, a gas outlet cover connected with the second opening in a sealed mode, and a gas outlet cover connected with the gas inlet cover in a sealed mode. The multiple holes are transversely formed in the pipe body to divide the pipe body into a condensation chamber close to the first opening and a drying chamber close to the second opening, the drying chamber is filled with a drying agent layer, the filter cotton layer is transversely arranged on the drying layer, and the floating ball is arranged between the filter cotton layer and the air outlet cover in a floating mode. The gas chromatography sample gas drying device is good in drying effect and sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatography pre-drying of a comprehensive gas logging instrument for petroleum geological exploration, in particular to a gas chromatography sample gas drying device. Background Art

[0002] During comprehensive gas logging, the gas chromatography sample drying unit uses a borosilicate glass drying tube filled with desiccant. The gas to be dried enters the inlet under the pressure of the sample pump, directly contacts the desiccant, and then exits the outlet, resulting in dry gas. The desiccant must be regularly replaced, cleaned, and dried before being refilled. However, these drying tubes are expensive. Due to the harsh operating environment, mud is often drawn into the tube, where it solidifies with the desiccant, forming a hard mass that is difficult to clean. Cleaning the tubes is a significant workload for employees. Especially during winter, when temperatures are low, these drying tubes are prone to freezing at the threads, making them difficult to open and replace with new desiccant, a significant challenge for employees. Furthermore, these drying tubes are susceptible to damage, resulting in financial losses. The upper and lower covers and threads are also prone to leaks. Furthermore, due to the low charge, the gas released from the drilling fluid, which carries a high amount of water, directly contacts the desiccant, resulting in a short service life.

[0003] The above information disclosed in the background technology section is only for enhancing understanding of the background of the present invention and therefore may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0004] The utility model aims to provide a gas chromatography sample gas drying device, which can effectively ensure the safety and sealing of the tube body and has a good drying effect.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] The utility model provides a gas chromatography sample drying device comprising:

[0007] The tube body includes a first opening at the bottom end and a second opening at the top end.

[0008] an air inlet cover, which is sealed and connected to the first opening,

[0009] an air outlet cover, which is sealed and connected to the second opening,

[0010] A porous plate is transversely arranged in the tube body to separate the tube body into a condensation chamber near the first opening and a drying chamber near the second opening, wherein the drying chamber is filled with a desiccant layer.

[0011] The filter cotton layer is arranged horizontally on the drying layer.

[0012] A float ball is floated between the filter cotton layer and the air outlet cover.

[0013] In the gas chromatography sample gas drying device, the air inlet cover and the air outlet cover are both provided with sealing rings.

[0014] In the gas chromatography sample gas drying device, the gas outlet cover is connected to a gas pipeline.

[0015] In the gas chromatography sample drying device, the tube body is a structure that is thick in the middle and thin at both ends.

[0016] In the gas chromatography sample gas drying device, the air inlet cover is detachably sealed and connected to the first opening, and the air outlet cover is detachably sealed and connected to the second opening.

[0017] In the gas chromatography sample gas drying device, the volume of the drying chamber is greater than the volume of the condensing chamber.

[0018] In the gas chromatography sample gas drying device, the diameter of the float is larger than the diameter of the gas outlet cover.

[0019] In the gas chromatography sample drying device, a plurality of circular holes are evenly distributed on the porous plate.

[0020] In the gas chromatography sample drying device, the filter cotton layer is at least 3 cm thick.

[0021] In the gas chromatography sample gas drying device, the gas chromatography sample gas drying device has a symmetrical structure.

[0022] In the above technical solution, the utility model provides a gas chromatography sample gas drying device, which has the following beneficial effects: the gas inlet and outlet covers of the gas chromatography sample gas drying device are reusable and have good sealing performance. Replacement is simple, and the gas inlet and outlet covers are designed with a small diameter, which is easier to unscrew and tighten. Disposable cleaning is unnecessary to reduce workload. Condensation before drying improves the drying effect, the charge is larger, which is twice the charge of traditional drying tubes, and the service life is longer, which is more than 6 times the service life of traditional drying tubes. The float realizes an anti-mud pumping design and is easy to pump. It brings great convenience to the on-site comprehensive gas logging and well logging gas chromatography drying device and reduces the workload of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 This is a schematic structural diagram of a gas chromatography sample drying device of the present invention;

[0025] Figure 2 This is a schematic structural diagram of the gas outlet cover of the gas chromatography sample gas drying device of the present invention;

[0026] Figure 3 This is a schematic structural diagram of the porous plate of the gas chromatography sample gas drying device of the utility model.

[0027] The reference numerals in the figure are as follows: 1 air pipeline, 2 air outlet cover, 3 float, 4 filter cotton layer, 5 desiccant layer, 6 drying chamber, 7 tube body, 8 porous plate, 9 condensation chamber, 10 air inlet cover, 11 sealing ring. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] 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" and the like to 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 device or element referred to 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.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] like Figure 1-3 As shown, in one embodiment, a gas chromatography sample drying device of the present invention includes:

[0037] The tube body 7 includes a first opening at the bottom and a second opening at the top.

[0038] an air inlet cover 10, which is sealed and connected to the first opening,

[0039] an air outlet cover 2, which is sealed and connected to the second opening;

[0040] The porous plate 8 is transversely arranged in the tube body 7 to separate the tube body 7 into a condensation chamber 9 near the first opening and a drying chamber 6 near the second opening. The drying chamber 6 is filled with a desiccant layer 5.

[0041] The filter cotton layer 4 is arranged horizontally on the drying layer.

[0042] The float ball 3 is floated between the filter cotton layer 4 and the air outlet cover 2 .

[0043] In a preferred embodiment of the gas chromatography sample gas drying device, both the gas inlet cover 10 and the gas outlet cover 2 are provided with a sealing ring 11 .

[0044] In a preferred embodiment of the gas chromatography sample gas drying device, the gas outlet cover 2 is connected to the gas pipeline 1.

[0045] In a preferred embodiment of the gas chromatography sample drying device, the tube body 7 is a structure that is thick in the middle and thin at both ends.

[0046] In a preferred embodiment of the gas chromatography sample gas drying device, the air inlet cover 10 is detachably sealed and connected to the first opening, and the air outlet cover 2 is detachably sealed and connected to the second opening.

[0047] In a preferred embodiment of the gas chromatography sample drying device, the volume of the drying chamber 6 is greater than the volume of the condensing chamber 9 .

[0048] In a preferred embodiment of the gas chromatography sample gas drying device, the diameter of the float 3 is larger than the diameter of the gas outlet cover 2 .

[0049] In a preferred embodiment of the gas chromatography sample drying device, a plurality of circular holes are evenly distributed on the porous plate 8 .

[0050] In a preferred embodiment of the gas chromatography sample drying device, the filter cotton layer 4 is at least 3 cm thick.

[0051] In a preferred embodiment of the gas chromatography sample gas drying device, the gas chromatography sample gas drying device has a symmetrical structure.

[0052] In one embodiment, the tube body 7 has excellent transparency, impact resistance, corrosion resistance and other characteristics, which can ensure the safety and sealing of the tube body 7. The tube body 7 is made of polypropylene material and is very cheap. The gas chromatography sample gas drying device consists of a detachable air inlet cover 10, an air outlet cover 2 and a tube body 7; a sealing ring 11 is provided on the air inlet cover 10 and the air outlet cover 2. When the cover is tightened, the sealing ring 11 has a good sealing effect. In addition, the air inlet cover 10 and the air outlet cover 2 adopt a small cover design, which solves the problem of being difficult to unscrew and tighten. The tube body 7 is divided into a drying chamber 6 and a condensation chamber 9 by a porous plate 8. A float 3 is added to the tube body 7 to prevent mud from being sucked into the drying tube. When the mud is sucked into the drying tube, the float 3 will float up under the action of buoyancy, blocking the air inlet, thereby preventing the mud from being sucked into the gas pipeline 1, and even damaging the instrument inside the instrument. When the electric degasser removes sample gas from the drilling fluid, the sample gas carries a large amount of water vapor. Under the suction of the sample gas pump, it first enters the condensation chamber from the bottom air inlet of the drying tube. Within the condensation chamber 9, the water vapor is fully condensed, forming water droplets that condense on the chamber walls, removing most of the water in the sample gas. The condensed gas then passes through the pores of the porous plate 8 and enters the drying chamber 6. There, it comes into contact with the desiccant, which absorbs moisture again. After passing through the desiccant, the gas passes through the filter cotton at the top of the drying chamber 6, where excess impurities are filtered out. It then enters the gas outlet 1 and leads to the chromatography equipment. This drying device requires no cleaning and is disposable; it can be replaced after use. The used drying tubes are then collected, stored, and disposed of uniformly. This saves time and effort, significantly reducing the workload for employees cleaning the drying tubes. It also significantly reduces the cost of purchasing expensive borosilicate drying tubes.

[0053] Finally, it should be noted that the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of this application.

[0054] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gas chromatography sample gas drying device, characterized in that, It includes, The tube body includes a first opening at the bottom end and a second opening at the top end. an air inlet cover, which is sealed and connected to the first opening, an air outlet cover, which is sealed and connected to the second opening, A porous plate is transversely arranged in the tube body to separate the tube body into a condensation chamber near the first opening and a drying chamber near the second opening, wherein the drying chamber is filled with a desiccant layer. The filter cotton layer is arranged horizontally on the drying layer. A float ball is floated between the filter cotton layer and the air outlet cover.

2. A gas chromatography sample drying device according to claim 1, characterized in that: The air inlet cover and the air outlet cover are both provided with sealing rings.

3. A gas chromatography sample drying device according to claim 1, characterized in that: The air outlet cover is connected to the air pipeline.

4. A gas chromatography sample drying device according to claim 1, characterized in that: The tube body is a structure that is thick in the middle and thin at both ends.

5. A gas chromatography sample drying device according to claim 1, characterized in that: The air inlet cover is detachably sealed and connected to the first opening, and the air outlet cover is detachably sealed and connected to the second opening.

6. A gas chromatography sample drying device according to claim 1, characterized in that: The volume of the drying chamber is greater than that of the condensing chamber.

7. A gas chromatography sample drying device according to claim 1, characterized in that: The diameter of the float is greater than the diameter of the air outlet cover.

8. The gas chromatography sample drying device according to claim 1, characterized in that: A plurality of circular holes are evenly distributed on the porous plate.

9. A gas chromatography sample drying device according to claim 1, characterized in that: The filter cotton layer should be at least 3 cm thick.

10. The gas chromatography sample drying device according to claim 1, characterized in that: The gas chromatography sample gas drying device has a symmetrical structure.

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