Spherical tank sealed sampler

Abstract

The spherical tank sealed sampler provided by this invention includes: a spherical tank, a sampler, a nitrogen pipeline, and a float assembly. A sampling port is provided at the bottom of the spherical tank. The sampler is connected to the sampling port via the sampling pipeline, and the nitrogen pipeline is connected to the sampling pipeline. The float assembly includes: a guide tube, the lower end of which is fixed to the spherical tank, and a liquid inlet at the upper end of which; and a sealing float, which is buoyantly disposed within the guide tube. It can extract oil from the spherical tank through the guide tube, and the extracted samples are more accurate and representative than those obtained using existing processes.

Description

Technical Field

[0001] This invention relates to the field of chemical technology, and more particularly to a closed sampler for spherical tanks. Background Technology

[0002] Due to the need for safe chemical production, the sampling port of the spherical tank sampler is generally located on the inlet pipeline of the spherical tank. This sampling technique cannot effectively represent the actual sample composition inside the spherical tank.

[0003] We urgently need a new type of sealed sampler for spherical tanks that can take samples from inside the tank. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a sealed spherical tank sampler with high sampling accuracy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spherical sealed sampler includes: a spherical tank, wherein a sampling port is provided at the bottom of the spherical tank;

[0007] A sampler, wherein the sampler is connected to the sampling port via a sampling pipeline;

[0008] A nitrogen pipeline, wherein the nitrogen pipeline is connected to the sampling pipeline; and

[0009] A float assembly, disposed within the spherical tank and communicating with the sampling port, comprises: a guide tube, the lower end of which is fixed to the spherical tank, and an inlet port at the upper end of which; and

[0010] A sealing float is buoyantly disposed within the guide tube.

[0011] Furthermore, the sealing float includes an upper float, a lower float, a connecting post fixedly disposed between the upper float and the lower float, and a sealing sleeve gapped outside the connecting post, wherein the sealing sleeve is in sliding sealing cooperation with the guide tube.

[0012] Furthermore, the upper float is provided with at least one first vent hole, and the lower float is provided with at least one second vent hole, wherein the diameter of the second vent hole is larger than the diameter of the first vent hole.

[0013] Furthermore, the diameters of both the upper float and the lower float are larger than the inner diameter of the sealing sleeve. The upper float has a first convex arc surface on the side facing the lower float, and the lower float has a second convex arc surface on the side facing the upper float.

[0014] Furthermore, a limiting member for limiting the sealing sleeve is provided on the lower inner side of the guide tube.

[0015] Furthermore, the spherical tank is provided with a support member for limiting the lower float, and the support member is located inside the guide tube.

[0016] Furthermore, a top cover is provided at the upper end of the guide tube, and the liquid inlet hole of the guide tube is formed on the upper side wall of the guide tube.

[0017] Furthermore, the bottom of the spherical tank is connected to spherical tank receiving and discharging pipelines.

[0018] Furthermore, the length of the guide tube is greater than the radius of the spherical tank.

[0019] Furthermore, the sampler is a closed sampler, and a first valve is provided on the sampling pipeline. The connection point between the nitrogen pipeline and the sampling pipeline is located upstream of the first valve.

[0020] The beneficial effects of this invention compared to the prior art are:

[0021] The spherical tank sealed sampler provided by this invention includes: a spherical tank, a sampler, a nitrogen pipeline, and a float assembly. A sampling port is provided at the bottom of the spherical tank. The sampler is connected to the sampling port via the sampling pipeline, and the nitrogen pipeline is connected to the sampling pipeline. The float assembly includes: a guide tube, the lower end of which is fixed to the spherical tank, and a liquid inlet at the upper end of which; and a sealing float, which is buoyantly disposed within the guide tube. It can extract oil from the spherical tank through the guide tube, and the extracted samples are more accurate and representative than those obtained using existing processes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the float assembly floating to the upper end of the guide tube in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the float assembly located at the lower end of the guide tube in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the float assembly in the downward state according to an embodiment of the present invention.

[0026] In the diagram: 1. Spherical tank; 2. Sampler; 3. Nitrogen pipeline; 4. Sampling pipeline; 5. First valve; 6. Guide pipe; 7. Liquid inlet; 8. Upper float; 9. Lower float; 10. Connecting column; 11. Sealing sleeve; 12. First vent; 13. Second vent; 14. First convex arc surface; 15. Second convex arc surface; 16. Limiting component; 17. Support component; 18. Spherical tank receiving and discharging pipelines. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example 1

[0029] like Figure 1-3 As shown, the spherical tank 1 and the closed sampler 2 include: a spherical tank 1, a sampler 2, a nitrogen pipeline 3, and a float assembly. The spherical tank 1 is used to store oil products, and a sampling port and receiving / discharging pipelines 18 are respectively provided at the bottom of the spherical tank 1. The sampler 2 is connected to the sampling port through the sampling pipeline 4, and a first valve 5 is provided on the sampling pipeline 4; the nitrogen pipeline 3 is connected to the sampling pipeline 4, wherein the connection point between the nitrogen pipeline 3 and the sampling pipeline 4 is located upstream of the first valve 5. A second control valve is provided on the nitrogen pipeline. Preferably, the sampler 2 in this embodiment is a closed sampler 2.

[0030] A float assembly is disposed inside the spherical tank 1 and communicates with the sampling port. The float assembly includes a guide tube 6 and a sealing float. The lower end of the guide tube 6 is fixed to the spherical tank 1, and a top cover is provided at the upper end of the guide tube 6. A liquid inlet 7 is provided at the upper end of the guide tube 6. In this embodiment, the liquid inlet 7 is formed on the upper sidewall of the guide tube 6. The sealing float is buoyantly disposed inside the guide tube 6 along its length. It should be noted that the density of the sealing float in this embodiment is greater than the density of the oil in the spherical tank 1.

[0031] Specifically, the sealing float includes an upper float 8, a lower float 9, a connecting post 10 fixedly disposed between the upper float 8 and the lower float 9, and a sealing sleeve 11 gapped outside the connecting post 10. The sealing sleeve 11 is in sliding sealing cooperation with the guide tube 6.

[0032] In this embodiment, two first vent holes 12 are symmetrically arranged on the upper float 8, and two second vent holes 13 are symmetrically arranged on the lower float 9, wherein the diameter of the second vent hole 13 is larger than the diameter of the first vent hole 12.

[0033] In this embodiment, the diameters of both the upper float 8 and the lower float 9 are larger than the inner diameter of the sealing sleeve 11. The upper float 8 has a first convex arc surface 14 on the side facing the lower float 9, and the lower float 9 has a second convex arc surface 15 on the side facing the upper float 8. When the float assembly rises, the second convex arc surface 15 on the lower float 9 seals the lower port of the sealing sleeve 11. When the float assembly descends, the first convex arc surface 14 on the upper float 8 seals the upper port of the sealing sleeve 11.

[0034] To facilitate oil extraction, a limiting member 16 for limiting the sealing sleeve 11 is fixedly installed on the lower inner wall of the guide pipe 6, and a support member 17 for limiting the lower float 9 is installed on the spherical tank 1. The support member 17 is located inside the guide pipe 6. When the oil is extracted, the sealing sleeve 11 is positioned at the limiting member 16, and the lower float 9 is positioned at the support member 17. There is a gap between the upper float 8 and the upper port of the sealing sleeve 11, and there is also a gap between the lower float 9 and the lower port of the sealing sleeve 11.

[0035] To improve sampling accuracy, the length of the guide tube 6 in this embodiment is greater than the radius of the spherical tank 1. The diameter of the lower float 9 is smaller than the inner diameter of the limiting member 16. The diameter of the upper float 8 is matched with the inner diameter of the guide tube 6.

[0036] When spherical tank 1 needs sampling, the operator first connects the sealed sampler 2, closes the first valve 5, and then introduces medium-pressure nitrogen (nitrogen pressure greater than that of spherical tank 1) into the sampler through the nitrogen line. The medium-pressure nitrogen pushes the sealing float in the guide tube 6 upwards, that is, the nitrogen line pushes the lower float 9 to move. After the lower float 9 moves, it seals at the lower end of the sealing sleeve 11. Then, the lower float 9 drives the sealing sleeve 11 to move upwards together with the guide tube 6. During the upward movement, the oil in the guide tube 6 is discharged from the liquid inlet 7 at the upper end of the guide tube 6.

[0037] When the sealing float reaches the top of the guide tube 6, the oil enters the cavity between the connecting column 10 and the sealing sleeve 11 through the liquid inlet 7, and the medium-pressure nitrogen is discharged to the flare. The upper float 8 moves down and seals at the upper port of the sealing sleeve 11. The first valve is opened, and as the nitrogen is discharged, the sealing float moves downward and draws the oil in the spherical tank 1 into the guide tube 6 through the liquid inlet 7. When the sealing float reaches the bottom, the lower float 9 touches the support member 17, and the sealing sleeve 11 abuts against the limiting member 16. At this time, the sealing float is in a half-open state (that is, there is a gap between the upper float 8 and the upper port of the sealing sleeve 11, and there is also a gap between the lower float 9 and the lower port of the sealing sleeve 11). The oil above the upper float 8 can be transported to the sampler 2 of the spherical tank 1 through the half-open sealing float, so that the sample collected is more representative.

[0038] The beneficial effects of this embodiment compared to the prior art are:

[0039] In this embodiment, the sealed sampler 2 of the spherical tank 1 collects oil samples from inside the spherical tank 1 through a nitrogen pipeline 3 and a sealed float. The samples collected are more representative and accurate, and can effectively determine the quality of daily production.

[0040] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In the description of this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the present invention have been shown and described above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spherical tank sealed sampler, characterized in that: include: A spherical container, wherein a sampling port is provided at the bottom of the spherical container; A sampler, wherein the sampler is connected to the sampling port via a sampling pipeline; A nitrogen pipeline, which is connected to the sampling pipeline; as well as A float assembly, disposed within the spherical tank and communicating with the sampling port, comprises: a guide tube, the lower end of which is fixed to the spherical tank, and an inlet port at the upper end of which; and A sealing float, wherein the sealing float is buoyantly disposed within the guide tube; The sealing float includes an upper float, a lower float, a connecting post fixedly disposed between the upper float and the lower float, and a sealing sleeve gapped outside the connecting post. The sealing sleeve is in sliding sealing cooperation with the guide tube. The upper float is provided with at least one first vent hole, and the lower float is provided with at least one second vent hole, wherein the diameter of the second vent hole is larger than the diameter of the first vent hole. The diameters of the upper float and the lower float are both larger than the inner diameter of the sealing sleeve. The upper float has a first convex arc surface on the side facing the lower float, and the lower float has a second convex arc surface on the side facing the upper float.

2. The spherical tank sealed sampler according to claim 1, characterized in that: The lower inner side of the guide tube is provided with a limiting member for limiting the sealing sleeve.

3. The spherical tank sealed sampler according to claim 1, characterized in that: The spherical tank is provided with a support member for limiting the lower float, and the support member is located inside the guide tube.

4. The spherical tank sealed sampler according to claim 1, characterized in that: The guide tube is provided with a top cover at its upper end, and the liquid inlet hole of the guide tube is formed on the upper side wall of the guide tube.

5. The spherical tank sealed sampler according to claim 1, characterized in that: The bottom of the spherical tank is connected to the receiving and discharging pipelines.

6. The spherical tank sealed sampler according to any one of claims 1-5, characterized in that: The length of the guide tube is greater than the radius of the spherical tank.

7. The spherical tank sealed sampler according to any one of claims 1-5, characterized in that: The sampler is a closed sampler, and a first valve is installed on the sampling pipeline. The connection point between the nitrogen pipeline and the sampling pipeline is located upstream of the first valve.

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