Liquid removal device for a tank breather valve

Abstract

This application relates to a liquid removal device for a breather valve of a storage tank, specifically in the field of oil tank filtration equipment. It includes a retaining shell with an inlet at one end and an outlet at the other end. The flow direction of the medium inside the retaining shell is along the direction from the inlet to the outlet. An oil-retaining cap is installed inside the retaining shell, opposite the inlet. A vent is provided on the side wall of the oil-retaining cap, connecting the inlet and the outlet. This application solves the problem of petroleum gas / liquid being carried away by the exhaled gas from the breather valve at the top of the oil tank during operation, reducing leakage of petroleum gas / liquid inside the tank and lowering production costs.

Description

Technical Field

[0001] This application relates to the field of oil storage tank filtration equipment, and in particular to a liquid removal device for a tank breather valve. Background Technology

[0002] Storage tanks experience "breathing" during routine loading and unloading, resulting in the emission of escaping gases. Breathing emissions are caused by the expansion and contraction of steam due to changes in temperature and atmospheric pressure; this occurs when the liquid level inside the tank remains unchanged and is a natural emission without human intervention. Operating emissions, on the other hand, are losses incurred during loading and unloading. During loading, if the pressure inside the tank exceeds the release pressure, steam is forced out. Unloading losses occur when air is drawn into the tank as it becomes saturated with organic vapors and expands, exceeding the steam's capacity.

[0003] Regarding the aforementioned technologies, the inventors believe that during the large breathing process of the storage tank, oil vapor is exhaled from the breather valve, and the gas carries a large amount of crude oil out of the breather valve, causing the crude oil in the oil-gas mixture to leak onto the outer wall of the top of the storage tank. This not only causes pollution to the top of the storage tank, but also makes it impossible to guarantee the safe operation of the storage tank due to the evaporation of crude oil. Utility Model Content

[0004] To address the issue of petroleum gas and liquid being carried away by the breather valve at the top of the oil storage tank during operation, thereby reducing leakage of petroleum gas and liquid inside the tank and lowering production costs, this application provides a liquid removal device for the breather valve of the oil storage tank.

[0005] This application provides a liquid removal device for a storage tank breather valve, which adopts the following technical solution:

[0006] A liquid removal device for a storage tank breather valve includes a retaining shell, one end of which has an inlet and the other end has an outlet. The direction from the inlet to the outlet is the flow direction of the medium inside the retaining shell. An oil-retaining cap is provided inside the retaining shell, which is opposite to the inlet. An exhaust hole is provided on the side wall of the oil-retaining cap, which connects the inlet and the outlet.

[0007] Optionally, the oil trap includes a trapping section opposite to the inlet. A support section is fixedly connected to the side wall of the trapping section. The support section is fixedly connected to the trapping shell. Multiple support sections are arranged along the circumference of the trapping section, and the vent is located between two adjacent support sections.

[0008] Optionally, the interception section includes a high point end and a low point end, the sidewall of the interception section gradually slopes from the high point end to the low point end, and the low point end is offset from the inlet.

[0009] Optionally, the interception section is conical, with the high point located at the center of the inlet and the low point located on the side of the high point closer to the inlet.

[0010] Optionally, a guide oil cap is fixedly connected to the side of the intercepting shell near the inlet. The inner diameter of the guide oil cap gradually decreases from the side near the inlet to the side near the intercepting oil cap. The diameter of the guide oil cap on the side near the intercepting oil cap is smaller than the diameter of the bottom end of the intercepting oil cap.

[0011] Optionally, the diameter of the low point of the oil trap is larger than the diameter of the guide oil cap on the side closer to the oil trap, and the diameter of the low point of the oil trap is smaller than the diameter of the guide oil cap on the side away from the oil trap.

[0012] Optionally, the guide oil cap has an oil outlet hole on its side wall, and the intercepting shell is fixedly connected to an oil outlet pipe, which communicates with the oil outlet hole.

[0013] Optionally, the oil outlet is located at the lowest end of the circumferential sidewall of the guide cap.

[0014] Optionally, the retaining shell includes a first flange near the inlet and a second flange near the outlet. The first flange and the second flange are fixedly connected, and the retaining oil cap is located inside the second flange.

[0015] Optionally, a gasket is provided between the first flange and the second flange.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. Significantly improved the quality of petroleum gas and liquid entrained in the exhaled gas from the breather valve at the top of the oil storage tank.

[0018] 2. It solved the problem of environmental pollution at the top of the oil storage tank, maintaining clean production.

[0019] 3. Prevents crude oil from being exhaled through the breathing valve, reducing the labor intensity for workers. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a tank breather valve liquid removal device according to an embodiment of this application.

[0021] Figure 2This is a cross-sectional view of a tank breather valve liquid removal device according to an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the oil trapping cap of a tank breather valve liquid removal device in an embodiment of this application.

[0023] Figure 4 This is a side view of the oil trap cap of a tank breather valve liquid removal device according to an embodiment of this application.

[0024] Figure 5 This is a schematic diagram of the guide oil cap of a tank breather valve liquid removal device according to an embodiment of this application.

[0025] Figure 6 This is a bottom view of the guide oil cap of a tank breather valve liquid removal device according to an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Retaining shell; 11. Inlet; 12. Outlet; 13. First flange; 14. Second flange; 2. Retaining oil cap; 21. Retaining part; 211. High point end; 212. Low point end; 22. Support part; 23. Vent hole; 3. Guide oil cap; 31. Oil outlet hole. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] This application discloses a liquid removal device for a storage tank's breather valve. (Refer to...) Figure 1 , Figure 2 A storage tank breather valve liquid removal device includes a retaining shell 1, with an inlet 11 at the bottom end of the retaining shell 1 and an outlet 12 at the top end of the retaining shell 1. The inlet 11 is in relative communication with the interior of the retaining shell 1, and the outlet 12 is in relative communication with the interior of the retaining shell 1. The medium enters the interior of the retaining shell 1 from the inlet 11 and is discharged from the outlet 12.

[0031] The retaining shell 1 includes a first flange 13 located near the inlet 11 and a second flange 14 located near the outlet 12. The first flange 13 and the second flange 14 are positioned opposite each other and are fixedly connected by bolts. A gasket is positioned between the first flange 13 and the second flange 14, and the gasket is clamped and fixed between the first flange 13 and the second flange 14 by bolts.

[0032] Reference Figure 3 , Figure 4 An oil trap 2 is horizontally disposed inside the casing 1, and is fixedly connected to the second flange 14. The oil trap 2 includes a trapping portion 21, which is conical in shape, and its diameter is smaller than the bottom opening diameter of the first flange 13. The trapping portion 21 includes a high point end 211 at the top and a low point end 212 on the bottom periphery. The high point end 211 is located near the outlet 12, and the low point end 212 is located near the inlet 11. The sidewall of the oil trap 2 is smoothly inclined along the direction from the high point end 211 to the low point end 212.

[0033] A support portion 22 is also fixedly connected to the outer wall of the interception portion 21. Multiple support portions 22 are equidistantly arranged along the circumference of the interception portion 21. A gap is left between two adjacent support portions 22 to form an exhaust hole 23. One side of the exhaust hole 23 is connected to the inlet 11, and the other side of the exhaust hole 23 is connected to the outlet 12. Thus, the exhaust hole 23 forms a channel to connect the inlet 11 and the outlet 12.

[0034] When the oil-gas mixture entering at inlet 11 impacts the intercepting oil cap 2, the oil inside the oil-gas mixture remains on the side wall of the intercepting oil cap 2 near inlet 11. Guided by the inclined side wall of the intercepting oil cap 2, the oil can flow down along the side wall of the intercepting oil cap 2, and the separated gas is discharged from the outlet 12 through the exhaust port 23.

[0035] Reference Figure 2 , Figure 5 Inside the retaining shell 1, near the inlet 11, a guide oil cap 3 is fixedly connected. The guide oil cap 3 is opposite to the inlet 11 and is coaxially arranged with the retaining oil cap 2. The guide oil cap 3 is a frustum-shaped structure with openings at both ends. The guide oil cap 3 has an opening on the side near the inlet 11 and is connected to the inlet 11. The guide oil cap 3 also has an opening on the side near the retaining oil cap 2 and is connected to the inlet 11.

[0036] The diameter of the circumferential sidewall of the guide oil cap 3 gradually decreases from the side near the inlet 11 to the side away from the inlet 11. The diameter of the low point 212 of the intercepting oil cap 2 is larger than the diameter of the guide oil cap 3 near the intercepting oil cap 2, and the diameter of the low point 212 of the intercepting oil cap 2 is smaller than the diameter of the guide oil cap 3 away from the intercepting oil cap 2. This allows the vertical projection of the low point 212 of the intercepting oil cap 2 to fall on the sidewall of the guide oil cap 3, so that the oil flowing down from the low point 212 of the intercepting oil cap 2 can drip onto the sidewall of the guide oil cap 3 and move towards the bottom of the guide oil cap 3 under the guidance of the circumferential sidewall of the guide oil cap 3.

[0037] The circumferential sidewall of the guide cap 3 guides the oil-gas mixture entering from the inlet 11, causing the mixture to gather towards the side closer to the central axis. This facilitates better guidance of the mixture to the bottom sidewall of the intercepting cap 2 for separation. The outer sidewall of the guide cap 3 can also collect and guide the oil dripping from the intercepting cap 2, reducing the likelihood of the dripping oil flowing back from the inlet 11.

[0038] Reference Figure 5 , Figure 6 An oil outlet hole 31 is provided at the bottom of the outer side wall of the guide oil cap 3. An oil outlet pipe is fixedly connected to the side wall of the intercepting shell 1. The inside of the oil outlet pipe is connected to the oil outlet hole 31. The oil discharged from the oil outlet hole 31 can be discharged to the outside through the oil outlet pipe for centralized collection.

[0039] The oil outlet 31 is located at the lowest end of the guide oil cap 3, and the side wall of the guide oil cap 3 and the inner side wall of the first flange 13 form a chamber with an angle. The oil dripping from the intercepting oil cap 2 can be stored inside the chamber. The oil outlet 31 is located at the lowest end of the chamber, so the oil inside the chamber can be completely discharged. The oil inside the chamber can also seal the oil outlet 31, reducing the gas inside the intercepting shell 1 from being discharged from the oil outlet 31.

[0040] In this application, the term "multiple" refers to at least two or more, unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A liquid removal device for a storage tank breather valve, characterized in that: It includes a retaining shell (1), one end of which has an inlet (11) and the other end of which has an outlet (12). The direction from the inlet (11) to the outlet (12) is the flow direction of the medium inside the retaining shell (1). The retaining shell (1) is provided with a retaining oil cap (2) inside, which is opposite to the inlet (11). The side wall of the retaining oil cap (2) is provided with an exhaust hole (23), which connects the inlet (11) and the outlet (12).

2. The liquid removal device for a tank breather valve according to claim 1, characterized in that: The oil trap (2) includes a trap (21) opposite to the inlet (11). A support (22) is fixedly connected to the side wall of the trap (21). The support (22) is fixedly connected to the trap shell (1). Multiple support (22) are arranged along the circumference of the trap (21). The exhaust port (23) is located between two adjacent support (22).

3. The liquid removal device for a tank breather valve according to claim 2, wherein: The interception section (21) includes a high point end (211) and a low point end (212). The sidewall of the interception section (21) gradually slopes from the high point end (211) to the low point end (212). The low point end (212) is offset from the inlet (11).

4. The liquid removal device for a tank breather valve according to claim 3, characterized in that: The interception section (21) is conical, the high point end (211) is located at the center of the inlet (11), and the low point end (212) is located on the side of the high point end (211) close to the inlet (11).

5. The tank breather valve liquid removal device according to claim 3, characterized in that: A guide oil cap (3) is fixedly connected to the side of the intercepting shell (1) near the inlet (11). The inner diameter of the guide oil cap (3) gradually decreases from the side near the inlet (11) to the side near the intercepting oil cap (2). The diameter of the guide oil cap (3) on the side near the intercepting oil cap (2) is smaller than the diameter of the bottom end of the intercepting oil cap (2).

6. The liquid removal device for a tank breather valve according to claim 5, wherein: The diameter of the low end (212) of the oil trap (2) is greater than the diameter of the guide oil cap (3) on the side close to the oil trap (2), and the diameter of the low end (212) of the oil trap (2) is smaller than the diameter of the guide oil cap (3) on the side away from the oil trap (2).

7. The liquid removal device for a tank breather valve according to claim 5, wherein: The guide oil cap (3) has an oil outlet hole (31) on its side wall, and the intercepting shell (1) is fixedly connected to an oil outlet pipe, which is connected to the oil outlet hole (31).

8. The liquid removal device for a tank breather valve according to claim 7, characterized in that: The oil outlet (31) is located at the lowest end of the circumferential sidewall of the guide oil cap (3).

9. The liquid removal device for a tank breather valve of claim 1, wherein: The intercepting shell (1) includes a first flange (13) near the inlet (11) and a second flange (14) near the outlet (12). The first flange (13) and the second flange (14) are fixedly connected, and the intercepting oil cap (2) is located inside the second flange (14).

10. The liquid removal device for a tank breather valve according to claim 9, characterized in that: A gasket is provided between the first flange (13) and the second flange (14).

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