Petroleum sampling device

Abstract

The utility model discloses a petroleum sampling device which comprises the following components: a sampling bottle which comprises a bottle plug which is provided with a liquid inlet hole which has a set cross section area; the sampling frame comprises a mounting space, and the sampling bottle is located in the mounting space; the gland is positioned in the mounting space, and the gland is positioned above the sampling bottle; the traction rope is connected with the gland and is used for driving the gland to move, so that the gland covers or is far away from the liquid inlet hole of the sampling bottle; and the scale rope is provided with marks and is connected with the sampling frame. The petroleum sampling device can meet the standard and the requirement of petroleum sampling.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to a petroleum sampling device. Background Art

[0002] According to the "Technical Specifications for Surface Water Environmental Quality Monitoring" (HJ91.2-2022), petroleum sample collection requires the destruction of any oil film before sampling. Using a dedicated petroleum sampler, collect a columnar water sample from a depth of 30 cm below the water surface. Ensure that water sampling is performed below the water surface, avoiding any oil film or sediment on the water surface. The sampling volume must meet the requirements of standard analytical methods, and the sample bottle must not be rinsed with the collected water sample.

[0003] The specialized petroleum samplers currently in common use rely heavily on the sampling personnel's experience and judgment during the actual collection process, leading to a high degree of randomness in the sampling process. The "National Surface Water Environmental Quality Monitoring Network Manual Monitoring (Separate Sampling) Technical Guidelines" regarding petroleum sampling precautions state: "Because petroleum sampling requires certain sampling volumes, and insufficient or excessive sample volumes require bottle replacement and resampling, the sampling team must be equipped with sufficient petroleum sampling bottles." This statement clearly highlights a significant problem, hindering sampling accuracy and efficiency.

[0004] The specific problems are mainly: First, it is not possible to accurately collect water samples of corresponding depth according to the "Technical Specifications" (it is required to collect columnar water samples at a depth of 30 cm below the water surface); second, the amount of samples collected is either too much or insufficient (it is required that appropriate space remain in the sampling bottle when reaching the water surface, and generally the water level of the water sample should be controlled at the shoulder position of the sample bottle). Utility Model Content

[0005] The purpose of the present invention is to solve the problem that petroleum sampling cannot meet the standards and requirements. The present invention provides a petroleum sampling device that can meet the standards and requirements of petroleum sampling.

[0006] In order to solve the above technical problems, the embodiment of the present utility model discloses a petroleum sampling device, comprising:

[0007] A sampling bottle, comprising a bottle stopper, wherein the bottle stopper is provided with a liquid inlet hole, and the liquid inlet hole has a set cross-sectional area;

[0008] A sampling rack, comprising an installation space, wherein the sampling bottle is located in the installation space;

[0009] A gland is located in the installation space and above the sampling bottle;

[0010] A traction rope is connected to the gland, and is used to drive the gland to move so that the gland covers or moves away from the bottle stopper of the sampling bottle;

[0011] A scale rope is provided with a mark, and the scale rope is connected to the sampling rack.

[0012] Using the above technical solution, taking a liquid inlet with a diameter of 2 cm as an example (i.e., its cross-sectional area is approximately 3.14 square centimeters), it takes approximately 12 seconds to collect the required amount of sample, that is, a bottle stopper with a liquid inlet with a diameter of 2 cm is selected, and the sampling bottle with the bottle stopper is placed in the installation space of the sampling rack so that it is relatively fixed, and then the sampling rack is slowly placed into the water with a graduated rope, and the sampling bottle is then placed into the water until one of the marks on the graduated rope is flush with the water surface, then the rope is stopped. At this time, the vertical height between the bottle stopper and the water surface is 30 cm. At the same time, the sampler notes the mark position of the scale rope that his hand touches at this time, and then the operator quickly pulls the traction rope with his other hand. The traction rope pulls the pressure cap to make the pressure cap leave the bottle stopper, and the liquid inlet on the bottle stopper opens. The external liquid (i.e., the sample) begins to enter the sampling bottle through the liquid inlet. At the same time, a 12-second countdown begins. According to the countdown and the mark prompts on the scale rope, the sampler keeps pulling the scale rope upward at a constant speed. During the rising process of the sampling stand, the liquid enters the sampling bottle through the liquid inlet. When the countdown is about to end and the sampling bottle has not reached the water surface, the sampler releases the traction rope, and the pressure cap moves down under its own gravity to cover the liquid inlet hole on the bottle stopper. The liquid stops entering the sampling bottle. Finally, the sampling stand is pulled out of the water, the sampling bottle is taken out, and the sampling is completed.

[0013] In summary, the present invention provides a mark on the scale rope, which makes it easy for the sampler to grasp the sinking depth of the sampling bottle, thereby collecting samples at the corresponding underwater depth. On the other hand, the liquid inlet hole on the bottle stopper is used to limit the flow and control the amount of sample entering the sampling bottle per unit time. The combination of these two aspects can meet the standards and requirements of petroleum sampling.

[0014] According to another specific embodiment of the present invention, the sampling bottle further includes a bottle body, the bottle body includes a bottle mouth, and the bottle stopper is at least partially embedded in the bottle mouth along the height direction.

[0015] According to another specific embodiment of the present invention, the bottle stopper is made of polytetrafluoroethylene.

[0016] By adopting the above technical solution, the polytetrafluoroethylene stopper can better cooperate with the bottle mouth of the sampling bottle to achieve a sealed connection between its periphery and the bottle mouth, thereby preventing the sample from leaking from the connection gap between the stopper and the bottle mouth.

[0017] Furthermore, the PTFE bottle stopper has excellent non-stick surface properties, which prevents pollutants from being adsorbed on the bottle stopper.

[0018] According to another specific embodiment of the present invention, the thickness of the bottle stopper is 0.3 mm to 1 mm.

[0019] According to another specific embodiment of the present invention, the liquid inlet is circular.

[0020] According to another specific embodiment of the present invention, it also includes a suspension assembly, which includes a first hanging ring, a second hanging ring, a third hanging ring, a first chain and a second chain; wherein, the first hanging ring and the second hanging ring are symmetrically arranged on the top of the sampling rack and are connected to the sampling rack; the first chain connects the first hanging ring and the third hanging ring, and the second chain connects the second hanging ring and the third hanging ring; the first chain and the second chain are equal in length; the third hanging ring is connected to the scale rope.

[0021] Using the above technical solution, the first hanging ring, the second hanging ring, and the third hanging ring are distributed in an isosceles triangle, and the first hanging ring and the second hanging ring are symmetrically arranged on the top of the sampling rack, thereby ensuring that the force on both sides of the sampling rack is uniform, avoiding the sampling rack from tilting and shaking during the up and down movement, affecting the accuracy of sampling.

[0022] According to another specific embodiment of the present invention, the mark on the scale rope includes multiple marks, and the distance between any two adjacent marks among the multiple marks is equal; when the scale rope, the first chain and the second chain are straightened, the straight-line distance between one of the multiple marks and the cork is 30 cm.

[0023] Using this technical solution, when the mark with a linear distance of 30 cm from the bottle stopper is flush or approximately flush with the water surface, the sampling bottle is located 30 cm below the horizontal plane, meeting the required water depth for sampling. Furthermore, the equal spacing between any two adjacent marks makes it easier for the sampler to control the pulling speed of the sampling rack during the process, ensuring a uniform pulling speed.

[0024] According to another specific embodiment of the present invention, it also includes a connecting rod, a through hole is provided in the center of the top of the sampling rack, the connecting rod is passed through the through hole, the upper end of the connecting rod is connected to the traction rope, and the lower end of the connecting rod is connected to the center of the pressure cover; the through hole allows the connecting rod to move in the height direction relative to the sampling rack.

[0025] Using the above technical solution, the traction rope is connected to the pressure cover through a connecting rod, and the connecting rod passes through the through hole at the top of the sampling rack and is connected to the center of the pressure cover, thereby ensuring the stability of the traction rope in lifting the pressure cover and preventing the pressure cover from tipping over and shaking due to uneven force during the up and down process.

[0026] According to another specific embodiment of the present invention, the sampling rack includes a chassis and a fixing frame, the chassis includes a limiting space, and the installation space includes the limiting space; the fixing frame is connected to the chassis in a rotatable manner around a first direction; the first direction is perpendicular to the height direction.

[0027] By adopting the above technical solution, when the sampling rack is in use, the angle between the fixing frame and the chassis is 180°, and the fixing frame is located directly above the limited space. At this time, it is not convenient to place the sampling bottle into the limited space. Instead, the fixing frame is rotated to a set angle relative to the chassis, for example 90°. At this time, the fixing frame and the chassis are set at 90°, so that the fixing frame will not block the limited space of the chassis, making it convenient to place the sampling bottle into the limited space.

[0028] According to another specific embodiment of the present invention, the sampling rack also includes a limiting ring, which is sleeved on the sampling bottle; the limiting ring and the chassis are spaced apart along the height direction, and the limiting ring includes a first part and a second part, the second part is fixedly connected to the fixing frame, one end of the first part is detachably connected to one end of the second part, and the other end of the first part is connected to the other end of the second part in a manner that is rotatable around the height direction; the straight-line distance between the two ends of the first part is greater than the minimum outer diameter of the sampling bottle.

[0029] By adopting the above technical solution, the limiting ring forms a closed circular space to be sleeved on the neck of the sampling bottle. The first part and the second part of the limiting ring are both semicircular, one end of the first part and one end of the second part are detachably connected, and the other end of the first part is rotatably connected to the other end of the second part, so that after one end of the first part and one end of the second part are detached, the first part can be rotated relative to the second part, rotated about 90 degrees, and the semicircular space of the second part is open to the outside, that is, without the obstruction of the first part, then the lower end of the sampling bottle can be placed in the limiting space, and the neck part of the sampling bottle is placed in the semicircular space of the second part, and then the first part is rotated relative to the second part to return it to its original position and connected to the second part, then the circular space formed by the first part and the second part is sleeved outside the neck of the sampling bottle to further limit the sampling bottle and prevent it from tipping over, shaking and other unstable phenomena in the installation space of the sampling rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view of a petroleum sampling device according to an embodiment of the present invention is shown;

[0031] Figure 2 A perspective view of a sampling bottle according to an embodiment of the present invention is shown;

[0032] Figure 3A three-dimensional diagram of a sampling rack according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0033] The following is an explanation of the implementation of the present invention by means of specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide an in-depth understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] It should be noted that in this specification, 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.

[0035] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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. Therefore, they cannot be understood as a limitation on the utility model.

[0036] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0037] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0039] refer to Figure 1 and Figure 2 The embodiment of the present utility model provides a petroleum sampling device 1 for collecting petroleum samples in surface water.

[0040] Petroleum is a complex mixture of hydrocarbons, including small amounts of hydrocarbon derivatives containing elements such as oxygen, nitrogen, and sulfur. Hydrocarbons are generally classified by structure as alkanes, cycloalkanes, aromatics, and alkenes. The petroleum we commonly encounter is primarily composed of hydrocarbons. Petroleum exists in water in five main states: floating oil, dispersed oil, emulsified oil, dissolved oil, and oil-solids.

[0041] The petroleum sampling device 1 of the embodiment of the present invention comprises: a sampling bottle 2, a sampling rack 3, a gland 4, a traction rope 5 and a graduated rope 6. Figure 2 As shown, the sampling bottle 2 includes a bottle body 20 and a bottle stopper 21. The bottle body 20 includes a bottle mouth 200. Figure 2 The bottle stopper 21 is at least partially embedded in the bottle mouth 200 (as shown in the Z direction). The bottle stopper 21 is provided with a liquid inlet hole 22. The liquid inlet hole 22 has a predetermined cross-sectional area. For example, the liquid inlet hole 22 is circular and is located at the center of the bottle stopper 21.

[0042] It is easy to understand that, with other factors remaining unchanged, the cross-sectional area of ​​the liquid inlet 22 determines the amount of sample entering the bottle 20 per unit time. In actual operation, the sampler can select different cross-sectional areas of the liquid inlet 22 based on actual conditions.

[0043] Specifically, in this embodiment, multiple bottle stoppers 21 are respectively provided with circular liquid inlet holes 22 with different diameters, and multiple bottle stoppers 21 have liquid inlet holes 22 with different cross-sectional areas. The amount of sample entering the bottle body 20 per unit time can be controlled by replacing the bottle stoppers 21 with liquid inlet holes 22 with different cross-sectional areas.

[0044] Exemplarily, the cross-sectional area of ​​the liquid inlet 22 can be calculated based on different sampling times, the required sample volume (the volume from the water level to the shoulder of the sampling bottle 2), and the water pressure (the average water pressure from the water surface to 30 cm below the water surface), and determined in combination with actual measurement results.

[0045] like Figure 1 and Figure 2 As shown, the sampling rack 3 includes an installation space 30 , and the sampling bottle 2 is located in the installation space 30 . Exemplarily, the sampling bottle 2 is relatively fixed in the installation space 30 .

[0046] The pressing cover 4 is located in the installation space 30 , and the pressing cover 4 is located above the sampling bottle 2 .

[0047] The traction rope 5 is connected to the gland 4, and the traction rope 5 is used to drive the gland 4 to move so that the gland 4 covers or moves away from the bottle stopper 21 of the sampling bottle 2. That is, by controlling the traction rope 5, the gland 4 moves in the height direction ( Figure 1 Specifically, the traction rope 5 is pulled upward, which drives the gland 4 upward. The gland 4 and the bottle stopper 21 are spaced apart in the height direction. At this time, the liquid inlet 22 is open, and external liquid (i.e., sample) can enter the bottle body 20 through the liquid inlet 22. Correspondingly, the traction rope 5 is loosened downward, and the gland 4 moves downward under its own gravity until it covers the bottle stopper 21. At this time, the gland 4 cannot move further downward, and the gland 4 closes the liquid inlet 22 on the bottle stopper 21, preventing external liquid from entering the bottle body 20.

[0048] refer to Figure 3 , the scale rope 6 is provided with a mark 600, and the scale rope 6 is connected to the sampling rack 3. Exemplarily, the scale rope 6 is connected to the sampling rack 3 to control the sampling rack 3 to move in the height direction ( Figure 3 The marking 600 on the scale rope 6 helps the sampler to grasp the water depth of the sampling bottle 2 on the sampling rack 3.

[0049] Using the above technical solution, taking a circular liquid inlet hole 22 with a diameter of 2 cm as an example (i.e., its cross-sectional area is approximately 3.14 square centimeters), it takes approximately 12 seconds to collect the required sample volume (400 ml to 450 ml), that is, a bottle stopper 21 with a liquid inlet hole 22 with a diameter of 2 cm is selected, the bottle body 20 of the sampling bottle 2 is covered with the bottle stopper 21, the sampling bottle 2 is placed in the installation space 30 of the sampling rack 3, so that it is relatively fixed, and then the sampling rack 3 is slowly placed into the water with the scale rope 6, and the sampling bottle 2 is then placed into the water until one of the marks 610 on the scale rope 6 is flush with the water surface, then the rope is stopped. At this time, the vertical height between the bottle stopper 21 and the water surface is 30 cm. At the same time, the sampler notes the mark position of the scale rope 6 that the hand touches at this time, and then the operator quickly pulls the traction rope 5 with the other hand. The traction rope 5 pulls the pressure cap 4 to make the pressure cap 4 leave the bottle stopper 21, and the liquid inlet 22 on the bottle stopper 21 opens. At the same time, a 12-second countdown starts. The operator pulls the scale rope 6 upward at a constant speed according to the countdown and the mark prompts on the scale rope 6. During the rising process of the sampling rack 3, the liquid enters the bottle body 20 of the sampling bottle 2 through the liquid inlet 22. When the countdown is about to end and the sampling bottle 2 has not reached the water surface, the sampler loosens the traction rope 5, and the pressure cap 4 moves down under its own gravity to cover the liquid inlet 22 on the bottle stopper 21, and the liquid stops entering the sampling bottle 2. Finally, the sampling rack 3 is pulled out of the water, the sampling bottle 2 is taken out, and the sampling is completed.

[0050] In summary, the present invention provides a mark 600 on the scale rope 6 on the one hand, and the mark 600 makes it easy for the sampler to grasp the sinking depth of the sampling bottle 2, thereby collecting samples at the corresponding underwater depth. On the other hand, the liquid inlet hole 22 on the bottle plug 21 is used to limit the flow and control the amount of sample entering the bottle body 20 of the sampling bottle 2 per unit time. The two aspects are combined to meet the standards and requirements for petroleum sampling.

[0051] refer to Figure 2 and Figure 3 In some possible embodiments, the bottle stopper 21 is made of polytetrafluoroethylene (PTFE). For example, polytetrafluoroethylene (PTFE) is corrosion-resistant, non-deformable, and has excellent sealing properties. A PTFE bottle stopper 21 can better cooperate with the mouth 200 of the sampling bottle 2, achieving a sealed connection between its periphery and the mouth 200, preventing sample leakage from the gap between the bottle stopper 21 and the mouth 200. Furthermore, a PTFE bottle stopper 21 has excellent non-stick properties, preventing contaminants from being adsorbed on the bottle stopper 21.

[0052] In some possible embodiments, the thickness of the bottle stopper 21 is 0.3 mm to 1 mm. For example, the thickness of the bottle stopper 21 can be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, etc., which is not limited by the present invention. Preferably, the thickness of the bottle stopper 21 of this embodiment is 0.5 mm.

[0053] In some possible implementations, the pressure cap 4 is lined with a silicone pad (not shown in the figures) to reduce the impact on the sampling bottle 2 during the downward movement of the pressure cap 4.

[0054] refer to Figure 1 and Figure 3 In some possible embodiments, the apparatus further includes a suspension assembly 7, which includes a first suspension ring 71, a second suspension ring 72, a third suspension ring 73, a first chain 74, and a second chain 75. The first suspension ring 71 and the second suspension ring 72 are symmetrically arranged on the top of the sampling rack 3 and connected to the sampling rack 3. The first chain 74 connects the first suspension ring 71 and the third suspension ring 73, and the second chain 75 connects the second suspension ring 72 and the third suspension ring 73. The first chain 74 and the second chain 75 are of equal length. The third suspension ring 73 is connected to the graduated rope 6. In other words, the first suspension ring 71, the second suspension ring 72, and the third suspension ring 73 are arranged in an isosceles triangle, and the first suspension ring 71 and the second suspension ring 72 are symmetrically arranged on the top of the sampling rack 3. This ensures uniform force on both sides of the sampling rack 3, preventing the sampling rack 3 from tilting and shaking during its upward and downward movement, which could affect sampling accuracy.

[0055] refer to Figure 2 and Figure 3In some possible embodiments, the graduated cord 6 includes a plurality of markings 600, and the spacing between any two adjacent markings 600 is equal. When the graduated cord 6, first chain 74, and second chain 75 are straightened, one marking 610 of the plurality of markings 600 is 30 cm away from the bottle stopper 21. In other words, when the marking 610 is flush or approximately flush with the water surface, the sampling bottle 2 is located 30 cm below the water level, meeting the water depth requirement for sampling.

[0056] Exemplarily, compared with other marks 600, the mark 610 has a brighter color, such as red, green, etc., or other more conspicuous signs, so that the sampler can observe the position reached by the mark 610 to determine whether the sampling bottle 2 reaches 30 cm below the horizontal plane.

[0057] Exemplarily, the spacing between any two adjacent marks 600 among the plurality of marks 600 is equal, making it easier for the sampler to control the pulling speed during the process of pulling up the sampling rack 3, thereby maintaining a uniform pulling speed. Specifically, the spacing between any two adjacent marks 600 on the graduated rope 6 is 10 cm. Taking the aforementioned circular liquid inlet 22 with a diameter of 2 cm as an example, it takes approximately 12 seconds to collect the required amount of sample. The sampler, in accordance with the instructions of the marks 600, pulls from one mark 600 to another adjacent mark 600 approximately every 4 seconds, i.e., 10 cm. As the 12-second countdown nears the end, the sampling bottle 2 is close to the water surface. The gland 4 is then placed on the stopper 21 at a position close to the water surface but not above the water surface, sealing the liquid inlet 22.

[0058] Those skilled in the art will appreciate that, in other embodiments, the distance between any two adjacent marks 600 on the scale rope 6 may also be other values, such as 2 cm, 5 cm, etc.

[0059] In some possible embodiments, a connecting rod 8 is further included. A through hole 31 is provided at the center of the top of the sampling rack 3. The connecting rod 8 is passed through the through hole 31. The upper end of the connecting rod 8 is connected to the traction rope 5, and the lower end is connected to the center of the pressure cover 4. The through hole 31 allows the connecting rod 8 to move relative to the sampling rack 3 in the height direction ( Figure 3 For example, the traction rope 5 is connected to the gland 4 via a connecting rod 8, and the connecting rod 8 passes through the through hole 31 at the top of the sampling rack 3 and is connected to the center of the gland 4, thereby ensuring the stability of the traction rope 5 in lifting the gland 4 and preventing the gland 4 from tipping over or shaking due to uneven force during the up and down movement.

[0060] In some possible implementations, such as Figure 1 and Figure 3As shown, the sampling rack 3 includes a chassis 32 and a fixing frame 33 . The chassis 32 includes a limiting space 320 , and the installation space 30 includes the limiting space 320 , that is, the limiting space 320 is a part of the installation space 30 .

[0061] The fixing frame 33 surrounds the first direction ( Figure 3 The first direction is perpendicular to the height direction. For example, the chassis 32 is generally hollow cylindrical, and the hollow portion inside it forms a limited space 320. The fixing frame 33 is rectangular, and its height direction ( Figure 3 The mounting space 30 is extended (as shown in the Z direction) to define together with the base plate 32 a mounting space 30, and the mounting space 30 accommodates the sampling bottle 2.

[0062] For example, when the sampling rack 3 is in use, Figure 3 As shown, the angle between the fixing frame 33 and the chassis 32 is 180°, and the fixing frame 33 is located directly above the limited space 320. At this time, it is not convenient to place the sampling bottle 2 into the limited space 320. The fixing frame 33 is rotated relative to the chassis 32 at a set angle, for example 90°. At this time, the fixing frame 33 and the chassis 32 are set at 90°, so that the fixing frame 33 will not block the limited space 320 of the chassis 32, making it convenient to place the sampling bottle 2 into the limited space 320.

[0063] In some possible implementations, the sampling rack 3 further includes a limiting ring 34, which is sleeved on the sampling bottle 2; the limiting ring 34 and the bottom plate 32 are arranged in the height direction ( Figure 3 The limiting ring 34 includes a first portion 341 and a second portion 342, wherein the second portion 342 is fixedly connected to the fixing frame 33, one end of the first portion 341 is detachably connected to one end of the second portion 342, and the other end of the first portion 341 is connected to the other end of the second portion 342 in a manner that is rotatable around the height direction; the straight-line distance between the two ends of the first portion 341 is greater than the minimum outer diameter of the sampling bottle 2. For example, the radial dimension of the neck of the sampling bottle 2 is also the minimum outer diameter of the sampling bottle 2, and the limiting ring 34 is sleeved on the neck of the sampling bottle 2 to further limit the position of the sampling bottle 2, so as to prevent the sampling bottle 2 from shaking in the installation space 30 of the sampling frame 3 during the up and down movement of the sampling frame 3, thereby affecting the accuracy of sampling.

[0064] Specifically, the limiting ring 34 is generally annular, forming a closed circular space 340 to be sleeved on the neck of the sampling bottle 2 . The first portion 341 and the second portion 342 of the limiting ring 34 are both semicircular in shape. One end of the first portion 341 and one end of the second portion 342 are detachably connected, and the other end of the first portion 341 is rotatably connected to the other end of the second portion 342. Therefore, after one end of the first portion 341 and one end of the second portion 342 are detached, the first portion 341 can be rotated relative to the second portion 342, and rotated about 90°. The semicircular space of the second portion 342 is open to the outside, that is, there is no obstruction by the first portion 341. At this time, the lower end of the sampling bottle 2 can be placed in the limiting space 320, and the neck part of the sampling bottle 2 is placed in the semicircular space of the second portion 342. Then, the first portion 341 is rotated relative to the second portion 342 to return it to its original position and connect it to the second portion 342. Then, the circular space 340 composed of the first portion 341 and the second portion 342 is sleeved outside the neck of the sampling bottle 2 to further limit the sampling bottle 2 and prevent it from tipping over, shaking, and other unstable phenomena in the installation space 30 of the sampling rack 3.

[0065] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A petroleum sampling device, characterized in that: include: A sampling bottle, comprising a bottle stopper, wherein the bottle stopper is provided with a liquid inlet hole, and the liquid inlet hole has a set cross-sectional area; A sampling rack, comprising an installation space, wherein the sampling bottle is located in the installation space; A gland is located in the installation space and above the sampling bottle; A traction rope is connected to the gland, and is used to drive the gland to move so that the gland covers or moves away from the bottle stopper of the sampling bottle; A scale rope is provided with a mark, and the scale rope is connected to the sampling rack.

2. The petroleum sampling device according to claim 1, characterized in that: The sampling bottle further comprises a bottle body, wherein the bottle body comprises a bottle mouth, and along the height direction, the bottle stopper is at least partially embedded in the bottle mouth.

3. The petroleum sampling device according to claim 2, characterized in that: The bottle stopper is made of polytetrafluoroethylene.

4. The petroleum sampling device according to claim 3, characterized in that: The thickness of the bottle stopper is 0.3 mm to 1 mm.

5. The petroleum sampling device according to claim 2, characterized in that: The liquid inlet hole is circular.

6. The petroleum sampling device according to claim 1, wherein: It also includes a suspension assembly, which includes a first hanging ring, a second hanging ring, a third hanging ring, a first chain and a second chain; wherein, the first hanging ring and the second hanging ring are symmetrically arranged on the top of the sampling rack and are connected to the sampling rack; the first chain connects the first hanging ring and the third hanging ring, and the second chain connects the second hanging ring and the third hanging ring; the first chain and the second chain are equal in length; the third hanging ring is connected to the scale rope.

7. The petroleum sampling device according to claim 6, characterized in that: The marks on the scale rope include multiple marks, and the distance between any two adjacent marks among the multiple marks is equal; when the scale rope, the first chain and the second chain are straightened, the straight-line distance between one of the multiple marks and the cork is 30 cm.

8. The petroleum sampling device according to claim 1, wherein: It also includes a connecting rod, a through hole is provided in the center of the top of the sampling rack, the connecting rod is passed through the through hole, the upper end of the connecting rod is connected to the traction rope, and the lower end of the connecting rod is connected to the center of the pressure cover; the through hole allows the connecting rod to move in the height direction relative to the sampling rack.

9. The petroleum sampling device according to claim 1, wherein: The sampling rack includes a chassis and a fixing frame, the chassis includes a limiting space, and the installation space includes the limiting space; the fixing frame is connected to the chassis in a rotatable manner around a first direction; the first direction is perpendicular to the height direction.

10. The petroleum sampling device according to claim 9, characterized in that: The sampling rack also includes a limiting ring, which is sleeved on the sampling bottle; the limiting ring and the chassis are spaced apart along the height direction, and the limiting ring includes a first part and a second part, the second part is fixedly connected to the fixing frame, one end of the first part is detachably connected to one end of the second part, and the other end of the first part is connected to the other end of the second part in a manner that can rotate around the height direction; the straight-line distance between the two ends of the first part is greater than the minimum outer diameter of the sampling bottle.

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