Breathing flat pressure type blocking assembly, oil storage tank and oil storage system

By designing a breathing pressure blocking component in the oil storage tank, the installation position of the container breathing protector is reduced. Through the cooperation of oil mist filter and valve, the problems of high-altitude operation risks and oil mist odor are solved, achieving efficient oil mist filtration and convenient maintenance.

CN122402947APending Publication Date: 2026-07-17HUANENG LANCANG RIVER HYDROPOWER CO LTD
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Patent Information

Application Number
CN202610434051.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-03
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing breather for oil storage tanks is installed at a high position, which makes maintenance difficult and poses risks of working at height. In addition, it is difficult to effectively remove oil mist and odors inside the tank.

Method used

Design a breathing pressure blocking component, which lowers the installation position of the container breathing protector and adds an oil mist filter and valve to the connecting pipe. By reducing the pipe diameter, the flow rate and local resistance are enhanced, which helps to capture oil mist particles and achieve oil mist filtration.

Benefits of technology

It reduces maintenance difficulty and cost, reduces oil mist odor and unpleasant smell, improves oil mist filtration efficiency, and reduces the risk of maintenance personnel working at heights.

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Abstract

This invention relates to a breathing pressure equalization blocking assembly, an oil storage tank, and an oil storage system. The breathing pressure equalization blocking assembly includes a connecting pipe and a container breathing protector. One end of the connecting pipe is connected to a vent in the oil storage tank. The two ends of the connecting pipe face different directions and are spaced apart in a predetermined direction. The container breathing protector is located at the other end of the connecting pipe. This invention, by enabling communication between the container breathing protector and the vent, allows for a change in the installation position of the container breathing protector. This allows the container breathing protector to be positioned at a lower location for easy observation, inspection, and replacement, thereby reducing maintenance costs and difficulty.
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Description

Technical Field

[0001] This invention relates to the field of oil storage technology, specifically to a breathing pressure blocking component, an oil storage tank, and an oil storage system. Background Technology

[0002] When storing oil, the pressure inside oil storage tanks fluctuates due to changes in environmental factors such as temperature and pressure. To ensure the safe operation of oil storage tanks, breather respirators are required. However, in related technologies, the breather respirators are installed at a high position. When the desiccant (silica gel) becomes damp and discolored and needs to be replaced, scaffolding or A-frame ladders must be erected. The disassembly and assembly process requires at least several people to cooperate and poses risks of working at height. Furthermore, oil mist is easily generated in the turbine oil tank room during oil handling, and due to poor ventilation, oil mist and odors can be present inside the tank room. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a breathing pressure blocking assembly including a connecting pipe and a container breathing protector. One end of the connecting pipe is used to connect to the vent of the oil storage tank. The two ends of the connecting pipe have different orientations and are spaced apart in a preset direction. The container breathing protector is located at the other end of the connecting pipe.

[0005] The breathing pressure blocking assembly of this invention significantly lowers the installation position of the container breathing protector, eliminating the need for maintenance personnel to work at heights and reducing maintenance costs and difficulty.

[0006] In some embodiments, the diameter of the other end of the connecting pipe is smaller than the diameter of the first end. Reducing the pipe diameter from the vent to the oil mist breather increases the flow velocity and local resistance, thereby enhancing the throttling effect, aiding in the capture of oil mist particles within the pipe, achieving oil mist filtration, and reducing oil mist odor and unpleasant smells in the oil tank chamber.

[0007] In some embodiments, the connecting pipe includes a first pipe segment, a second pipe segment, a third pipe segment, and a fourth pipe segment, which are connected in sequence. The end of the first pipe segment away from the second pipe segment forms one end of the connecting pipe. The first pipe segment is parallel to the third pipe segment, and the end of the fourth pipe segment away from the third pipe segment forms the other end of the connecting pipe.

[0008] In some embodiments, the fourth tube segment is a bent tube and includes a first connecting part, a second connecting part and a third connecting part connected in sequence. The first connecting part is connected to the third tube segment, the third connecting part is connected to the container breathing protector, and the third connecting part is parallel to the first tube segment.

[0009] In some embodiments, the breathing pressure-blocking assembly includes a valve, which is provided on the second connection portion. Oil droplets filtered by the oil mist filter enter the second connection portion of the fourth pipe section and can be discharged by opening the valve, preventing oil droplets from accumulating in the second connection portion. This ensures the normal operation of the oil mist filter and the oil mist respirator, reducing the occurrence of malfunctions.

[0010] In some embodiments, the breathing pressure equalization blockade assembly includes a support, one end of which is connected to the third pipe section, and the other end of which is connected to the oil storage tank. The support provides additional support to the entire breathing pressure equalization blockade assembly, increasing its stability.

[0011] In some embodiments, the breathing pressure blocking assembly includes an oil mist filter disposed between the container breathing protector and the other end of the connecting tube.

[0012] The oil storage tank of this invention includes a tank body and the breathing pressure blocking assembly, with one end of the connecting pipe connected to the vent of the tank body.

[0013] In some embodiments, the oil storage tank includes a measuring tape, which is disposed on the tank body.

[0014] The oil storage system of this invention includes the breathing pressure blocking component or the oil storage tank. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the oil storage tank according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the respiratory pressure blocking assembly according to an embodiment of the present invention; Figure 3 This is a partial structural diagram of the fourth pipe section and valve in an embodiment of the present invention; Figure 4 This is a partial structural schematic diagram of the oil storage tank according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the oil storage system according to an embodiment of the present invention.

[0017] Figure label: 10000, Oil storage system; 1000. Oil storage tank; 100. Blocking components; 1. Connecting pipe; 11. First pipe section; 12. Second pipe section; 13. Third pipe section; 14. Fourth pipe section; 141. First connecting part; 142. Second connecting part; 143. Third connecting part. 2. Container breathing protector; 3. Valves; 4. Bracket; 5. Oil mist filter; 200. Tank body; 300. Oil measuring tape. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a breathing pressure blocking component 100, an oil storage tank 1000, and an oil storage system 10000.

[0020] like Figures 1 to 4 As shown, the oil storage tank 1000 of this embodiment of the invention includes a tank body 200 and a breathing pressure blocking assembly 100.

[0021] The breathing pressure blocking assembly 100 of this embodiment includes a connecting pipe 1 and a container breathing protector 2. One end of the connecting pipe 1 is used to connect to the vent of the tank body 200 of the oil storage tank 1000. The two ends of the connecting pipe 1 are oriented differently, and the two ends of the connecting pipe 1 are in a preset direction (e.g., Figure 1 The container breathing protector 2 is located at the other end of the connecting tube 1, spaced apart in the vertical direction.

[0022] like Figure 1 As shown, the vent is located at the top of the tank body 200 of the oil storage tank 1000, and one end of the connecting pipe 1 faces downward and is connected to the vent. The other end of the connecting pipe 1 has a different orientation than the first end, and the other end of the connecting pipe 1 is spaced apart from the first end in the vertical direction. Therefore, the connecting pipe 1 can extend from the first end to the lower side of the tank body 200, so that the other end of the connecting pipe 1 is located at the lower part of the tank body 200. This allows the container breathing protector 2 to be connected to the vent, thereby changing the installation position of the container breathing protector 2. This allows the container breathing protector 2 to be located at a lower position for easy observation, inspection, and replacement by personnel, thereby reducing maintenance costs and maintenance difficulty.

[0023] Therefore, the breathing pressure blocking component 100 of this embodiment of the invention significantly lowers the installation position of the container breathing protector 2, eliminating the need for maintenance personnel to work at heights and reducing maintenance costs and difficulty.

[0024] Specifically, container breathing protector 2 is an oil mist breathing protector.

[0025] Furthermore, the breathing pressure-equalizing blocking assembly 100 includes an oil mist filter 5, which is located between the container breathing protector and the other end of the connecting pipe 1. The oil mist filter 5 is installed before the oil mist breather to achieve oil mist filtration.

[0026] In some embodiments, the connecting pipe 1 includes a first pipe segment 11, a second pipe segment 12, a third pipe segment 13, and a fourth pipe segment 14, which are connected sequentially. The end of the first pipe segment 11 facing away from the second pipe segment 12 (the lower end) forms one end of the connecting pipe 1. The first pipe segment 11 is parallel to the third pipe segment 13. The end of the fourth pipe segment 14 facing away from the third pipe segment 13 forms the other end of the connecting pipe 1. The first pipe segment 11, the second pipe segment 12, and the third pipe segment 13 form a bend, which allows the other end of the connecting pipe 1 to be lowered.

[0027] Specifically, the first pipe section 11, the second pipe section 12, the third pipe section 13 and the fourth pipe section 14 are all fixed by fastening bolts.

[0028] Specifically, the first pipe section 11, the second pipe section 12, the third pipe section 13, and the fourth pipe section 14 are all made of stainless steel and painted. The joints are all welded with matching flanges. After the flange welding is completed, PT flaw detection is performed. The weld is required to be free of cracks, incomplete penetration, slag inclusions, undercut, misalignment, weld beads, arc craters, surface porosity, sand holes, poor joints, root shrinkage, and other defects. Before installation, the flange surfaces should be checked to be flat, clean, and free of high points. Polytetrafluoroethylene gaskets are used as sealing gaskets and installed between the corresponding two flanges. The corresponding flanges are connected with fastening bolts.

[0029] The fourth pipe section 14 is a bent pipe and includes a first connecting part 141, a second connecting part 142 and a third connecting part 143 connected in sequence. The first connecting part 141 is connected to the third pipe section 13, the third connecting part 143 is connected to the container breathing protector 2, and the third connecting part 143 is parallel to the first pipe section 11.

[0030] Furthermore, the breathing pressure-blocking assembly 100 includes a valve 3, which is located on the second connection portion 142. The second connection portion 142 is located in the lower section of the fourth pipe section 14. Oil droplets filtered by the oil mist filter 5 enter the second connection portion 142 of the fourth pipe section 14 and can be discharged by opening the valve 3, preventing oil droplets from accumulating in the second connection portion 142. This ensures the normal use of the oil mist filter 5 and the oil mist respirator, reducing the occurrence of malfunctions.

[0031] Specifically, the valve is a stainless steel ball valve, used to periodically remove accumulated oil from the pipe.

[0032] Furthermore, the diameter of the other end of connecting pipe 1 is smaller than the diameter of the first end. This reduces the pipe diameter from the vent to the oil mist breather, thereby increasing the flow velocity and local resistance, which in turn enhances the throttling effect, helps capture oil mist particles in the pipe, achieves oil mist filtration, and reduces oil mist odor and other unpleasant smells in the oil tank room.

[0033] Specifically, the diameter of the fourth pipe section 14 is smaller than that of the first pipe section 11, the nominal diameter of the second pipe section 12 is 80mm, the nominal diameter of the third pipe section 13 is 65mm, and the nominal diameter of the fourth pipe section 14 is 25mm. The second connection part 142 is 1m above the ground to facilitate personnel operation of opening and closing the valve 3.

[0034] Specifically, the size of the oil mist respirator will affect the replacement cycle of the desiccant. The appropriate respirator can be selected according to the site environment. For example, the oil mist respirator is 4KG in size, the installation position is 1.5 meters above the ground, and the oil mist filter 5 is model KF25.

[0035] In some embodiments, the breathing pressure equalization blockage assembly 100 includes a support 4, one end of which is connected to a third pipe section 13, and the other end of which is used to connect to an oil storage tank 1000. The support 4 provides auxiliary support to the entire breathing pressure equalization blockage assembly 100, increasing its stability.

[0036] The oil storage tank 1000 of this embodiment includes an oil gauge 300, which is mounted on the tank body 200. The oil gauge 300 allows workers to easily observe the oil level in each storage tank 1000. It is a dedicated gauge for measuring the liquid level or space height within the tank, playing a crucial role in the measurement process. By measuring the oil level, the volume of oil in the tank can be calculated, further determining the quantity and quality of the oil. Furthermore, the oil gauge 300 can also be used to verify the accuracy of the tank level gauge, ensuring that the gauge reading matches the actual oil level. When using the oil gauge 300, attention must be paid to its measuring range and accuracy, as well as proper usage and maintenance to ensure the accuracy and reliability of the measurement results. A breathing pressure-blocking component 100 is added to prevent oil mist leakage and ensure a safe environment inside the tank.

[0037] Furthermore, the oil storage tank 1000 is equipped with a ladder to facilitate workers to reach the top of the oil storage tank 1000 as needed for their work.

[0038] The oil storage system 10000 of this invention includes a breathing pressure-equalizing blocking component 100 or an oil storage tank 1000.

[0039] Furthermore, such as Figure 5 As shown, the oil storage system 10000 is equipped with two sludge oil tanks and two clean oil tanks. Specifically, the two oil storage tanks 1000 are sludge oil tanks, and the two oil storage tanks 1000 are clean oil tanks. One clean oil tank is left empty, and the other clean oil tank is filled with qualified turbine oil for use by one unit. The two sludge oil tanks are left empty for draining oil during unit maintenance.

[0040] After adopting the breathing pressure blocking component 100 of this invention, the frequency and economic and time costs of replacing the desiccant in oil-filled respirators for maintenance personnel are greatly reduced. For example, in previous years, the desiccant needed to be replaced almost every quarter, requiring approximately 20 kg per quarter. With a cost of 100 yuan per kg of desiccant, each replacement required 3 people and took 1.5 hours per 10 kg. This project can save approximately 8,000 yuan in economic costs and about 36 hours of time annually.

[0041] The breathing pressure blocking assembly 100 of this invention can be applied to large oil storage tanks in refineries, oil fields, oil depots and other industries. It has a wide range of applications, good practical effect and wide applicability.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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, an electrical connection, or a connection that allows communication between them; 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.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 the invention. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A respiratory pressure-blocking assembly (100), characterized in that, include: A connecting pipe (1) is used to connect one end of the connecting pipe (1) to the vent of the oil storage tank (1000). The two ends of the connecting pipe (1) are oriented differently and are spaced apart in a preset direction. and Container breathing protector (2), which is located at the other end of the connecting pipe (1).

2. The respiratory pressure equalization blocking assembly (100) according to claim 1, characterized in that, The diameter of the other end of the connecting pipe (1) is smaller than the diameter of the first end.

3. The respiratory pressure equalization blocking assembly (100) according to claim 1, characterized in that, The connecting pipe (1) includes a first pipe segment (11), a second pipe segment (12), a third pipe segment (13), and a fourth pipe segment (14). The first pipe segment (11), the second pipe segment (12), the third pipe segment (13), and the fourth pipe segment (14) are connected in sequence. The end of the first pipe segment (11) away from the second pipe segment (12) forms one end of the connecting pipe (1). The first pipe segment (11) is parallel to the third pipe segment (13). The end of the fourth pipe segment (14) away from the third pipe segment (13) forms the other end of the connecting pipe (1).

4. The respiratory pressure equalization blocking assembly (100) according to claim 3, characterized in that, The fourth pipe segment (14) is a bent pipe and includes a first connecting part (141), a second connecting part (142) and a third connecting part (143) connected in sequence. The first connecting part (141) is connected to the third pipe segment (13), the third connecting part (143) is connected to the container breathing protector (2), and the third connecting part (143) is parallel to the first pipe segment (11).

5. The respiratory pressure equalization blocking assembly (100) according to claim 4, characterized in that, Includes valve (3), and the second connection part (142) is provided with valve (3).

6. The respiratory pressure equalization blocking assembly (100) according to claim 3, characterized in that, Includes a bracket (4), one end of which is connected to the third pipe section (13), and the other end of which is used to connect to the oil storage tank (1000).

7. The respiratory pressure equalization blocking assembly (100) according to claim 1, characterized in that, Includes an oil mist filter (5), which is disposed between the container breathing protector and the other end of the connecting pipe (1).

8. An oil storage tank (1000), characterized in that, Includes a tank (200) and a breathing pressure blocking assembly (100) according to any one of claims 1 to 7, wherein one end of the connecting pipe (1) is connected to the vent of the tank (200).

9. The oil storage tank (1000) according to claim 8, characterized in that, Includes an oil gauge (300), which is mounted on the tank body (200).

10. An oil storage system (10000), characterized in that, Includes the breathing pressure blocking assembly (100) according to any one of claims 1 to 7, or the oil storage tank (1000) according to claim 8 or 9.