Analyzing and sampling tool for ethane and carbon dioxide

Abstract

The utility model belongs to the technical field of sampling, and discloses an ethane carbon dioxide analysis sampling tool. Comprising a needle valve body, a cock, an air outlet and a rotary valve rod, the cock is arranged on one side of the needle valve body, the air outlet is formed in the other side of the needle valve body, one end of the cock is fixedly connected with the needle valve body through a first connecting rod, the other end of the cock is used for being connected with a pressure gauge root valve, and one end of the air outlet is fixedly connected with the needle valve body through a second connecting rod. The cock is provided with a first connecting piece, so that the tool is convenient to disassemble, no matter where an ethane sample is collected, as long as a pressure gauge is arranged on the flow path, under the cooperation of a manager, a root valve of the pressure gauge is closed, and the pressure gauge is disassembled and assembled with the ethane carbon dioxide analysis sampling tool, so that the sample collection can be quickly completed; the pressure gauge is installed after collection is completed, the working efficiency is improved under the condition that production is not affected, and the technical problem that the ethane sample collected on the production site is poor in representativeness is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sampling and relates to an ethane and carbon dioxide analysis sampling tool. Background Art

[0002] The oil and gas production site in the oil field needs to sample the produced ethane samples and analyze the carbon dioxide content. The carbon dioxide content is an important quality indicator of ethane products. The first-class ethane quality indicator requires the carbon dioxide content to be The carbon dioxide content in the air is approximately 0.05%, and the sample collection requirements are extremely strict. The carbon dioxide content in the air is approximately 0.04%. If air enters the sample, the carbon dioxide analysis results will be inaccurate, and the impact of carbon dioxide in the air on the analysis results cannot be reduced. Therefore, the ethane samples collected at the production site must be representative and air cannot be allowed to enter, otherwise the analysis results will be inaccurate. The sampling points currently installed at the production site cannot completely prevent air from entering the air bag during sampling and replacement. In the actual production process, due to the needs of product quality and production safety, samples must be collected at locations without fixed sampling point facilities. Due to the lack of complete sampling facilities and the relatively high pressure, as professional laboratory testing technicians, the ethane samples collected each time are less representative. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the purpose of the utility model is to provide an ethane carbon dioxide analysis sampling tool. No matter where the ethane sample is collected, as long as there is a pressure gauge in the process, the root valve of the pressure gauge is closed, the pressure gauge is removed and the ethane carbon dioxide analysis sampling tool is installed to quickly complete the sample collection. After the collection is completed, the pressure gauge is reinstalled, solving the technical problem of poor representativeness of ethane samples collected at the production site.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides an ethane carbon dioxide analysis sampling tool, comprising: a needle valve body, a cock and an air outlet; the cock is arranged on one side of the needle valve body, and the air outlet is arranged on the other side of the needle valve body; one end of the cock is fixedly connected to the needle valve body through a first connecting rod, and the other end is used to be connected to the root valve of the pressure gauge; one end of the air outlet is fixedly connected to the needle valve body through a second connecting rod, and the other end is used to be connected to the air bag.

[0006] Furthermore, it also includes a rotating valve stem, which is arranged at one end of the needle valve body and fixedly connected to the needle valve body.

[0007] Furthermore, the air outlet is a tapered air outlet, and the air outlet has a hollow structure.

[0008] Furthermore, the outer diameter of the small end of the air outlet is 4-6 mm, and the inner diameter is 1-3 mm; the outer diameter of the large end of the air outlet is 6.5-8.5 mm, and the inner diameter is 2.5-4.5 mm; and the length of the air outlet is 33-37 mm.

[0009] Furthermore, the first connecting rod is arranged between the cock and the needle valve body, one end of the first connecting rod is embedded in the needle valve body and fixedly connected to the needle valve body, and the other end is fixedly connected to the cock.

[0010] Furthermore, the second connecting rod is arranged between the cock and the air outlet, one end of the second connecting rod is embedded in the needle valve body and fixedly connected to the needle valve body, and the other end is fixedly connected to the air outlet.

[0011] Furthermore, it also includes a first connecting piece, which is sleeved on the outside of the first connecting rod and fixedly connected to the cock.

[0012] Furthermore, it also includes a second connecting piece, which is sleeved on the outside of the second connecting rod and fixedly connected to the air outlet.

[0013] Furthermore, it also includes a third connecting member, which is arranged at one end of the rotary valve stem close to the needle valve body, and the third connecting member is fixedly connected to the needle valve body.

[0014] Furthermore, the needle valve body, cock, air outlet, rotary valve stem, first connecting piece, second connecting piece and third connecting piece are made of stainless steel.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] The utility model discloses an ethane and carbon dioxide analysis sampling tool. Three mounting holes are provided on a needle valve body. The hole at the upper end is connected to a rotary valve stem for adjusting the gas flow rate. The pressure gauge is removed from the on-site sampling pipeline, and the hole on the left is connected to the root valve of the pressure gauge through a cock. The air outlet is installed in the hole on the right and is connected to an air bag through a silicone tube. During the sampling process, production is not affected.

[0017] The utility model discloses an ethane and carbon dioxide analysis sampling tool, which solves the technical problem of poor representativeness of ethane samples collected on the production site, eliminates the safety hazards brought by temporary loading sampling facilities, improves work efficiency and ensures the quality of samples.

[0018] The utility model discloses an ethane and carbon dioxide analysis and collection tool, which has a tapered air outlet, so that the silicone tube can be easily slid into the air outlet and can be quickly connected without excessive force or tools; at the same time, the silicone tube is sleeved on the air outlet to form a tight fit, effectively preventing gas leakage, and preventing air from entering the air bag even if there is an air pressure change, thereby ensuring the purity and accuracy of the sample; in addition, it is compatible with silicone tubes of different sizes and specifications, thereby improving the versatility and flexibility of the equipment, and finally reducing the waiting time and operation complexity during the sampling process, thereby improving the overall sampling efficiency.

[0019] The utility model discloses an ethane and carbon dioxide analysis and collection tool. As the inner diameter of the gas outlet decreases, the flow rate of the airflow increases, thereby achieving the aggregation and acceleration of the airflow. During the sampling or gas transmission process, the airflow is effectively guided to the air bag, thereby improving the sampling efficiency and transmission accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of an ethane and carbon dioxide analysis sampling tool of the present utility model.

[0021] Reference numerals:

[0022] 1- needle valve body; 2- cock; 3- air outlet; 4- rotary valve stem; 5- first connecting piece; 6- second connecting piece; 7- third connecting piece. DETAILED DESCRIPTION

[0023] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 should fall within the scope of protection of the present invention.

[0024] Example 1

[0025] The utility model provides an ethane carbon dioxide analysis sampling tool, such as Figure 1 As shown, it includes: a needle valve body 1, a cock 2, and an air outlet 3. The cock 2 is located on one side of the needle valve body 1, and the air outlet 3 is located on the other side of the needle valve body 1. One end of the cock 2 is fixedly connected to the needle valve body 1 via a first connecting rod, and the other end is connected to the base valve of the pressure gauge. One end of the air outlet 3 is fixedly connected to the needle valve body 1 via a second connecting rod, and the other end is used to connect to the air bag. It also includes a rotary valve stem 4, which is located at one end of the needle valve body 1 and fixedly connected to the needle valve body 1.

[0026] Specifically, according to on-site investigations, pressure gauges are installed at different locations along the pipeline. A high-temperature, corrosion-resistant stainless steel sampling tool is fabricated based on the pressure gauges to form an ethane and carbon dioxide analysis sampling tool. The tool comprises a needle valve body 1 for controlling the flow, pressure, or temperature of a gas or fluid, as well as for cutting off or distributing the medium. The needle valve body 1 is provided with three holes, located on the left, right, and top ends. The top end hole is connected to a rotary valve stem 4 for regulating the gas flow. The right end hole is connected to an air bag via an air outlet 3 for easy sample collection. The left end hole is connected to an on-site sampling point via a cock 2. By removing a pressure gauge from the on-site sampling pipeline and installing the ethane and carbon dioxide analysis sampling tool, the sample can be quickly and efficiently collected. The pressure gauge can then be quickly reinstalled. The entire process does not affect production while completing the sampling task with high quality, improving both work efficiency and analysis quality.

[0027] One side of the needle valve body 1 is provided with a cock 2 and a first connecting rod, sequentially arranged from left to right. The end of the first connecting rod, away from the cock 2, is embedded within the needle valve body 1 and fixedly connected to the needle valve body 1. Fixed connections include welding, detachable connections, and threaded connections. In this case, the threaded connection is used, with the external threads of the first connecting rod engaging with the internal threads of the needle valve body 1. The outer wall of the other end of the first connecting rod is sheathed with a first connector 5. In this embodiment, the first connector 5 is a hexagonal nut that secures the cock 2 to the first connecting rod, providing a secure connection.

[0028] The other side of the needle valve body 1 is provided with a second connecting rod and an air outlet 3 from left to right. Figure 1 It can be seen that the diameter of the second connecting rod is smaller than that of the first connecting rod. The large-inlet and small-outlet method is adopted, which helps the gas to pass through the pipeline system more efficiently, reduces the residence time in the pipeline, thereby improving the transportation efficiency, further reducing the possibility of leakage, and improving the safety and reliability of the sampling tool.

[0029] The end of the second connecting rod, distal from the air outlet 3, is embedded within the interior of the needle valve body 1 and fixedly connected thereto. This fixed connection is a threaded connection, achieved through the screwing action of threads, offering high connection strength and stability. Furthermore, threaded connections are adaptable to various sizes and specifications, meeting the needs of various engineering applications. A second connecting member 6 is sleeved on the outer wall of the end of the second connecting rod proximal to the air outlet 3. In this embodiment, the second connecting member 6 is a sleeve nut, including but not limited to a conventional nut, a self-locking nut, or a tapered sleeve nut. The selection can be tailored to the specific environment.

[0030] The air outlet 3 is a tapered air outlet with a hollow structure inside. The outer diameter of the small end of the air outlet 3 is 4-6mm, and the inner diameter is 1-3mm. The preferred outer diameter of the small end is 5mm, and the inner diameter of the small end is 2mm; the outer diameter of the large end of the air outlet 3 is 6.5-8.5mm, and the inner diameter is 2.5-4.5mm. The preferred outer diameter of the large end is 7.5mm, and the inner diameter of the large end is 3.5mm; the length of the air outlet 3 is 33-37mm, and the preferred length is 35mm.

[0031] The large end of the gas outlet 3 is threadedly connected to the needle valve body 1, and the small end is connected to the air bag. As can be seen from the above, the inner diameter of the gas outlet 3 gradually decreases, mainly to concentrate the airflow. During the gas flow process, as the inner diameter decreases, the flow rate of the airflow increases, thereby achieving the concentration and acceleration of the airflow. During the sampling or gas transmission process, the airflow is effectively guided to the air bag, improving sampling efficiency and transmission accuracy. In summary, the gradual reduction of the inner diameter can ensure that the airflow maintains a high speed and stability when flowing out of the gas outlet 3, reducing airflow diffusion and energy loss.

[0032] The outer diameter of the air outlet 3 gradually becomes thinner to facilitate the insertion of the silicone tube. As a commonly used connection material, the silicone tube has good elasticity and strong sealing performance and is widely used in various gas and liquid transmission systems. The tapered shape design makes it easier for the silicone tube to form a tight fit when inserted into the air outlet 3, thereby improving the sealing and stability of the connection. Even under the influence of external factors such as air pressure changes or vibrations, the silicone tube can maintain a stable connection state to prevent gas leakage or external air from entering the air bag.

[0033] The upper end of the needle valve body 1 is provided with a third connecting piece 7 and a rotary valve stem 4 from bottom to top. The third connecting piece 7 is provided at one end of the rotary valve stem 4 close to the needle valve body 1. The third connecting piece 7 is fixedly connected to the needle valve body 1. In this embodiment, the third connecting piece 7 is a hexagonal nut sleeve. Figure 1 It can be seen in the figure that the length of the rotary valve stem 4 is greater than the length of the third connecting member 7, which prevents the rotary valve stem 4 from fitting tightly with the needle valve body 1 and the flow cannot be adjusted.

[0034] Example 2

[0035] The utility model provides an ethane and carbon dioxide analysis sampling tool, the use of which includes the following steps:

[0036] 1. Close the root valve of the pressure gauge at the sampling point and remove the pressure gauge;

[0037] 2. Install Cock 2 on the pressure gauge and tighten it with tools;

[0038] 3. Open the valve at the root of the pressure gauge and rotate the valve stem 4 in sequence to fully replace the dead air;

[0039] 4. Close the valve at the base of the pressure gauge and connect the air bag to the small end of the air outlet 3 through the silicone tube;

[0040] 5. Open the valve at the base of the pressure gauge and adjust the rotary valve stem to 4 degrees to allow the sample to slowly enter the air bag;

[0041] 6. Replace the air bag at least three times, folding and pressing the air bag to fully exhaust it each time;

[0042] 7. After sampling is completed, close the root valve of the pressure gauge and rotate the valve stem 4 in sequence, remove the sampling tool, and reinstall the pressure gauge.

[0043] It should be noted that when opening the rotary valve stem 4, it should be opened slowly to avoid damage to the air bag or sample due to excessive gas flow; replacement at least three times is through multiple replacements and exhaust to ensure that the gas sample in the air bag is purer and reduce interference factors; during the entire connection process, ensure that the connection is tight and there is no leakage; finally, during the operation, wear personal protective equipment such as a gas mask, safety glasses and protective gloves.

[0044] The needle valve body 1, cock 2, air outlet 3, rotary valve stem 4, first connecting piece 5, second connecting piece 6, and third connecting piece 7 are made of high-pressure-resistant and corrosion-resistant stainless steel materials to ensure that the ethane carbon dioxide analysis sampling tool can operate stably in a high-pressure and corrosive environment, extend its service life, and reduce maintenance costs.

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 cannot be understood as a limitation on the present invention.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Claims

1. An ethane carbon dioxide analysis sampling tool, characterized in that: It includes a needle valve body (1), a cock (2) and an air outlet (3); The cock (2) is arranged on one side of the needle valve body (1), and the air outlet (3) is arranged on the other side of the needle valve body (1). One end of the cock (2) is fixedly connected to the needle valve body (1) through a first connecting rod, and the other end is used to be connected to the root valve of the pressure gauge. One end of the air outlet (3) is fixedly connected to the needle valve body (1) through a second connecting rod, and the other end is used to be connected to the air bag.

2. The ethane carbon dioxide analysis sampling tool according to claim 1, characterized in that: It also includes a rotary valve stem (4), which is arranged at one end of the needle valve body (1) and is fixedly connected to the needle valve body (1).

3. The ethane carbon dioxide analysis sampling tool according to claim 1, characterized in that: The air outlet (3) is a tapered air outlet, and the air outlet (3) has a hollow structure.

4. The ethane carbon dioxide analysis sampling tool according to claim 3, characterized in that: The outer diameter of the small end of the air outlet (3) is 4-6 mm, and the inner diameter is 1-3 mm; The outer diameter of the large end of the air outlet (3) is 6.5-8.5 mm, and the inner diameter is 2.5-4.5 mm; The air outlet (3) is 33-37 mm long.

5. The ethane carbon dioxide analysis sampling tool according to claim 1, characterized in that: The first connecting rod is arranged between the cock (2) and the needle valve body (1), one end of the first connecting rod is embedded in the needle valve body (1) and fixedly connected to the needle valve body (1), and the other end is fixedly connected to the cock (2).

6. The ethane carbon dioxide analysis sampling tool according to claim 2, characterized in that: The second connecting rod is arranged between the cock (2) and the air outlet (3), one end of the second connecting rod is embedded in the needle valve body (1) and fixedly connected to the needle valve body (1), and the other end is fixedly connected to the air outlet (3).

7. The ethane carbon dioxide analysis sampling tool according to claim 5, characterized in that: It also includes a first connecting member (5), which is sleeved on the outside of the first connecting rod and fixedly connected to the cock (2).

8. The ethane carbon dioxide analysis sampling tool according to claim 6, characterized in that: It also includes a second connecting member (6), which is sleeved on the outside of the second connecting rod and fixedly connected to the air outlet (3).

9. The ethane carbon dioxide analysis sampling tool according to claim 8, characterized in that: It also includes a third connecting member (7), which is arranged at one end of the rotary valve stem (4) close to the needle valve body (1), and the third connecting member (7) is fixedly connected to the needle valve body (1).

10. The ethane and carbon dioxide analysis sampling tool according to claim 9, characterized in that: The needle valve body (1), cock (2), air outlet (3), rotary valve stem (4), first connecting piece (5), second connecting piece (6), and third connecting piece (7) are made of stainless steel.

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