A methyl silicone oil storage tank

Abstract

The utility model discloses a methyl silicone oil storage jar, including storage jar subassembly, storage jar subassembly includes methyl silicone oil storage jar body, methyl silicone oil import / export located at the methyl silicone oil storage jar body outside, set up in the methyl silicone oil storage jar body outside's liquid level meter and fixed in the methyl silicone oil storage jar body bottom side's foot pad, the top of methyl silicone oil storage jar body is provided with oxygen content detector, pressure gauge and is located in the exhaust component of methyl silicone oil storage jar body center, and exhaust component includes fairing and excess air exhaust valve, and the fairing is placed in the inside of methyl silicone oil storage jar body, is close to the top of methyl silicone oil storage jar body and is provided with nitrogen compensation assembly. The utility model adopts nitrogen seal micro -positive pressure and exhaust valve to build storage environment for methyl silicone oil, and nitrogen forms continuous protection gas curtain at the jar top, and the oxygen and humidity of outside are isolated, and exhaust valve eliminates gas emission uneven and local oxygen enrichment, and makes gas orderly discharge.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of methyl silicone oil storage technology, and more specifically, to a methyl silicone oil storage tank. Background Technology

[0002] Currently, methyl silicone oil is often stored in ordinary iron drums or simple fixed-top tanks for long-term storage. These containers only have a mechanical breather valve installed at the top, allowing the gas phase inside the tank to be directly exposed to the outside atmosphere. During day and night temperature differences, loading and unloading operations, and settling processes, the tank experiences a rapid influx of oxygen-laden outside air during intake and a short-circuit during exhaust, with only the gas near the valve port being carried away. The dead zone areas far from the valve port remain in a high-oxygen, high-humidity state, causing the methyl silicone oil to undergo oxidative cracking in the locally oxygen-rich areas. This manifests as increased viscosity, darker color, and higher acid value, resulting in a decline in the overall quality of the oil in the tank. Therefore, a methyl silicone oil storage tank capable of stabilizing the gas inside the tank is designed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a methyl silicone oil storage tank.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses a methyl silicone oil storage tank, including a storage tank assembly. The storage tank assembly includes a methyl silicone oil storage tank body, a methyl silicone oil inlet / outlet located on the outside of the methyl silicone oil storage tank body, a level gauge located on the outside of the methyl silicone oil storage tank body, and pads fixed to the bottom side of the methyl silicone oil storage tank body. An oxygen content detector, a pressure gauge, and an exhaust assembly located at the center of the methyl silicone oil storage tank body are provided on the top of the methyl silicone oil storage tank body. The exhaust assembly includes a shroud and an excess air discharge valve. The shroud is located inside the methyl silicone oil storage tank body. A nitrogen compensation assembly is provided near the top of the methyl silicone oil storage tank body.

[0005] Preferably, the excess air discharge valve includes a housing, an intake valve disc, an exhaust valve disc, and a connector. The intake valve disc and the exhaust valve disc are installed inside the housing. An air inlet and an air outlet are provided at the bottom of the housing. The air inlet corresponds to the position of the intake valve disc, and the air outlet corresponds to the position of the exhaust valve disc. The air inlet and the air outlet are designed to be offset.

[0006] Preferably, the housing has an airflow cavity inside, which is connected to the air inlet and air outlet. The suction valve disc is normally positioned higher than the discharge valve disc, and a connector is disposed between the suction valve disc and the discharge valve disc.

[0007] Preferably, the connector includes a connecting plate and three guide rods penetrating the housing. The guide rods are slidably connected to the housing with matching guide sleeves. The guide rods on both sides are screwed to the connecting plate, the suction valve disc, and the discharge valve disc, respectively. The middle guide rod passes through the connecting rod and has a stop block threaded to its top.

[0008] Preferably, the fairing is connected to the air inlet via a pipe, and the fairing has an inverted conical design.

[0009] Preferably, the nitrogen compensation assembly includes a nitrogen inlet pipe, a micro-pressure regulating valve, and a nitrogen guide pipe. The nitrogen inlet pipe is fixed to the body of the methyl silicone oil storage tank. The input end of the nitrogen inlet pipe is connected to the output end of the micro-pressure regulating valve, and the output end of the nitrogen inlet pipe is connected to the input end of the nitrogen guide pipe.

[0010] Preferably, the micro-pressure regulating valve is connected to an external nitrogen cylinder / barrel, the nitrogen guide tube is a ring design, and the bottom of the nitrogen guide tube has several nitrogen inlets arranged circumferentially along the nitrogen guide tube.

[0011] Preferably, the nitrogen guide pipe is located on the outer side of the bottom end near the rectifier, and there is a gap between the two. A support frame for supporting the nitrogen guide pipe is provided between the nitrogen guide pipe and the inner wall of the methyl silicone oil storage tank.

[0012] Preferably, the front end of the support frame is designed to be open and in the shape of a "C". The support frame is arranged circumferentially along the nitrogen gas guide pipe, and the rear end of the support frame is fixed to the inner wall of the methyl silicone oil storage tank.

[0013] Preferably, the probes of both the oxygen content detector and the pressure gauge are placed inside the methyl silicone oil storage tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes nitrogen sealing with a micro-positive pressure and an exhaust valve to create a fully enclosed, low-oxygen, and pressure-stabilized storage environment for methyl silicone oil. Nitrogen forms a continuous protective air curtain at the top of the tank, effectively isolating external oxygen and moisture. The exhaust valve eliminates uneven gas emission and local oxygen enrichment caused by temperature differences or liquid level changes, allowing gas to be discharged in an orderly manner. This solves the problem that uneven gas emission can cause local oxygen to enter the methyl silicone oil, leading to thickening of the oil, darkening of its color, and deterioration of the overall oil quality.

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the planar structure of this utility model; Figure 3 This is an internal schematic diagram of the methyl silicone oil storage tank of this utility model; Figure 4 This is a partial structural schematic diagram of the exhaust assembly of this utility model; Figure 5 This is a schematic cross-sectional view of the excess air discharge valve of this utility model under normal conditions. Figure 6 This is a cross-sectional structural diagram of the excess air discharge valve of this utility model during exhaust. In the diagram: 1. Storage tank assembly; 11. Methyl silicone oil storage tank body; 12. Oxygen content detector; 13. Pressure gauge; 14. Level gauge; 15. Foot pad; 16. Methyl silicone oil inlet / outlet; 2. Exhaust assembly; 21. Fairing; 22. Housing; 23. Air inlet; 24. Air flow chamber; 25. Intake valve disc; 26. Exhaust valve disc; 27. Air outlet; 28. Connecting plate; 29. ​​Guide rod; 210. Guide sleeve; 211. Stop block; 3. Nitrogen compensation assembly; 31. Nitrogen inlet pipe; 32. Micro-pressure regulating valve; 33. Nitrogen guide pipe; 34. Nitrogen inlet; 35. Support frame. Detailed Implementation

[0018] like Figure 1-6 As shown, this utility model provides a methyl silicone oil storage tank, including a storage tank assembly 1. The storage tank assembly 1 includes a methyl silicone oil storage tank body 11, a methyl silicone oil inlet / outlet 16 located outside the methyl silicone oil storage tank body 11, a level gauge 14 located outside the methyl silicone oil storage tank body 11, and a pad 15 fixed to the bottom side of the methyl silicone oil storage tank body 11. An oxygen content detector 12, a pressure gauge 13, and an exhaust assembly 2 located at the center of the methyl silicone oil storage tank body 11 are provided on the top of the methyl silicone oil storage tank body 11. The exhaust assembly 2 includes a shroud 21 and an excess air exhaust valve. The shroud 21 is placed inside the methyl silicone oil storage tank body 11. A nitrogen compensation assembly 3 is provided near the top of the methyl silicone oil storage tank body 11.

[0019] Furthermore, in this embodiment, the excess air discharge valve includes a housing 22, an intake valve disc 25, a discharge valve disc 26, and a connector. The intake valve disc 25 and the discharge valve disc 26 are installed inside the housing 22. An air inlet 23 and an air outlet 27 are provided at the bottom of the housing 22. The air inlet 23 corresponds to the position of the intake valve disc 25, and the air outlet 27 corresponds to the position of the discharge valve disc 26. The air inlet 23 and the air outlet 27 are designed to be staggered, with the length of the air inlet 23 being longer than that of the air outlet 27, so that the air inlet 23 and the air outlet 27 are staggered vertically and horizontally. Air comes into contact with the intake valve disc 25 through the air inlet 23, and the air is discharged through the air outlet 27 under the discharge valve disc 26.

[0020] In this embodiment, an air flow cavity 24 is provided inside the outer casing 22. The air flow cavity 24 is connected to the air inlet 23 and the air outlet 27. The air flow cavity 24 is used to provide space for air to flow within the outer casing 22. The position of the intake valve disc 25 under normal conditions is higher than the normal position of the exhaust valve disc 26, and the exhaust valve disc 26 is located above the air outlet 27 to close the air outlet 27. A connector is provided between the intake valve disc 25 and the exhaust valve disc 26.

[0021] In this embodiment, the connector includes a connecting plate 28 and three guide rods 29 penetrating the outer shell 22. The guide rods 29 are slidably connected to the outer shell 22 by a matching guide sleeve 210. The three guide rods 29 slide up and down synchronously. The guide rods 29 on both sides are screwed to the connecting plate 28, the suction valve disc 25 and the discharge valve disc 26 respectively. The middle guide rod 29 penetrates the connecting rod and has a stop block 211 threaded on its top. The middle guide rod 29 can be easily replaced for adaptation.

[0022] In this embodiment, the rectifier 21 is connected to the air inlet 23 by a pipe. The rectifier 21 is an inverted cone design, with the large opening of the rectifier 21 facing downwards and directly towards the liquid surface. This allows it to "catch" nitrogen and residual oxygen flowing in from all sides. As the airflow flows from the large opening to the small opening, the channel area gradually decreases, the speed is naturally increased, and the direction is forced towards the small opening. The turbulent flow is "compressed" into a consistent airflow with uniform speed, achieving "catching" the large opening, "closing" the small opening, and "flowing" along the cone surface. Furthermore, the rectifier 21 is made of 304 stainless steel, which meets all the working requirements of the methyl silicone oil storage tank. It is economical, durable, and easy to clean.

[0023] It should be noted that the methyl silicone oil storage tank 11 is always kept under a slight positive pressure (the gauge pressure of slight positive pressure is 0.5 kPa-2 kPa relative to the ambient atmospheric pressure). Nitrogen is continuously added, and the excess mixed gas (nitrogen + trace amount of residual oxygen) automatically overflows from the excess air discharge valve at the top due to the pressure difference. Only when the environmental protection requirements are extremely high (zero emissions are required) is it necessary to add a small exhaust fan or vacuum pump after the excess air discharge valve to introduce the exhaust gas into the adsorption / condensation device. Under normal circumstances, the exhaust gas can be discharged by pressure difference.

[0024] In this embodiment, the nitrogen compensation component 3 includes a nitrogen inlet pipe 31, a micro-pressure regulating valve 32, and a nitrogen guide pipe 33. The nitrogen inlet pipe 31 is fixed on the methyl silicone oil storage tank body 11. The input end of the nitrogen inlet pipe 31 is connected to the output end of the micro-pressure regulating valve 32, and the output end of the nitrogen inlet pipe 31 is connected to the input end of the nitrogen guide pipe 33. The micro-pressure regulating valve 32 is a ZZY type self-operated pressure regulating valve, which can automatically adjust the pressure. The pressure threshold setting of the valve is mainly achieved by the diaphragm, piston, or metal bellows in the actuator. When the medium (nitrogen) pressure changes, the diaphragm in the actuator will deform due to the force, causing the valve core to move, thereby changing the flow area.

[0025] In this embodiment, the micro-pressure regulating valve 32 is connected to an external nitrogen cylinder / bucket to provide a nitrogen source. The nitrogen guide pipe 33 is a ring design, and several nitrogen inlet 34 are provided at the bottom of the nitrogen guide pipe 33 along the circumference of the nitrogen guide pipe 33. Through the ring-shaped nitrogen guide pipe 33, the nitrogen first evenly covers the entire liquid surface, and then slowly replaces it downwards. The amount of gas replenishment is automatically adjusted by the micro-pressure regulating valve 32 to always maintain a slight positive pressure.

[0026] In this embodiment, the nitrogen guide pipe 33 is located on the outer side of the bottom end near the rectifier 21, and there is a gap between the two to avoid conflict between them. A support frame 35 for supporting the nitrogen guide pipe 33 is provided between the nitrogen guide pipe 33 and the inner wall of the methyl silicone oil storage tank 11.

[0027] In this embodiment, the front end of the support frame 35 is designed to be open and in the shape of a "C". The support frame 35 is arranged around the nitrogen gas guide pipe 33. The rear end of the support frame 35 is fixed to the inner wall of the methyl silicone oil storage tank 11. The nitrogen gas guide pipe 33 is supported by the support frame 35. The support frame 35 is welded to avoid the risk of gas leakage caused by screw connection.

[0028] In this embodiment, the probes of the oxygen content detector 12 and the pressure gauge 13 are both placed inside the methyl silicone oil storage tank 11. The level gauge 14, the oxygen content detector 12 and the pressure gauge 13 are all existing equipment that can be used directly, and their detection values ​​can be viewed manually through the dial.

[0029] It should be noted that all components installed on the methyl silicone oil storage tank 11 need to be sealed to prevent air leakage. For example, sealing rings are installed at the probe insertion points of the oxygen content detector 12 and the pressure gauge 13 for sealing.

[0030] Specifically, the usage process of the methyl silicone oil storage tank is as follows: S1. Check that all sealing points of the tank are intact, confirm the pressure of the nitrogen source (nitrogen cylinder / barrel), the threshold setting of the micro-pressure regulating valve 32, and calibrate the oxygen content detector 12, pressure gauge 13, and level gauge 14. Pre-fill the tank with nitrogen. When the oxygen content reaches the level that meets the storage environment of methyl silicone oil, stop the nitrogen injection. Then install the micro-pressure regulating valve 32 and switch to automatic gas replenishment mode. Slightly open the excess air discharge valve to slowly discharge the residual air-nitrogen mixture until the oxygen content completely meets the storage environment of methyl silicone oil. The replacement is then considered complete. S2, start the oil pump, methyl silicone oil enters through the inlet / outlet on the side wall of the tank, the liquid level in the tank rises, the gas phase space in the tank shrinks, the pressure increases, the discharge valve disc 26 of the excess air discharge valve opens, the mixed gas is rectified by the rectifier 21 and discharged from the valve outlet to the atmosphere or exhaust gas treatment equipment. After the oil inlet is finished, the valve disc falls back and closes, and the tank automatically returns to a slightly positive pressure. S3 is stored statically during normal times. When the temperature drops at night, the tank is under a slight negative pressure and nitrogen is added. When the temperature rises during the day, the tank is under a slight positive pressure. The discharge valve 26 opens upward to discharge the excess nitrogen and trace amount of residual oxygen mixture. The micro-pressure regulating valve 32 adjusts the nitrogen flow rate in real time to maintain stable gas pressure inside the tank. When S4, methyl silicone oil is output, the liquid level in the tank drops, the tank is under slight negative pressure, and nitrogen is added through the micro-pressure regulating valve 32. Throughout the process, the tank remains under positive pressure, and air cannot flow back in.

[0031] S5, check the oxygen content detector 12 for drift every month, and calibrate it if necessary; The exhaust principle of the excess air exhaust valve is as follows: When the gas pressure inside the tank increases, the high-pressure gas enters the outer shell 22 through the air inlet 23. The air pressure acts directly on the lower surface of the suction valve disc 25, pushing the suction valve disc 25 to move upward. The suction valve disc 25 and the discharge valve disc 26 are connected by a connecting plate 28 and three guide rods 29. Therefore, while the suction valve disc 25 moves upward, the three guide rods 29 slide upward synchronously in the guide sleeve 210, causing the discharge valve disc 26 to move upward together. The discharge valve disc 26 leaves its valve seat, and the air outlet 27 (originally closed by the discharge valve disc 26) opens. The excess gas inside the tank is discharged to the atmosphere or exhaust gas treatment equipment along the air outlet 27. When the pressure inside the tank drops below the set value, the valve disc falls back synchronously under its own weight, and the discharge valve disc 26 presses the valve seat again, closing the exhaust channel and completing one exhaust cycle.

[0032] Through the above process and principle, the methyl silicone oil storage tank can maintain low oxygen, slight positive pressure, and meet the standards for fugitive emissions throughout the entire cycle of oil inlet-settling-oil outlet-maintenance, ensuring stable oil quality.

[0033] It should be noted that the above tank pressure values ​​of 0.5–2 kPa are for illustrative purposes only and are not limiting values. The positive pressure value of the tank needs to be adjusted according to the actual usage.

[0034] The components of this utility model, such as the methyl silicone oil storage tank body 11, oxygen content detector 12, pressure gauge 13, level gauge 14, rectifier 21, suction valve disc 25, discharge valve disc 26, and micro-pressure regulating valve 32, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0035] In the description of this utility model, 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 drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0036] Furthermore, the terms "first," "second," "third," and "fourth" 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," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0037] In this utility model, 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 connection 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 utility model according to the specific circumstances.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A methyl silicone oil storage tank, comprising a storage tank assembly (1), the storage tank assembly (1) comprising a methyl silicone oil storage tank body (11), a methyl silicone oil inlet / outlet (16) located outside the methyl silicone oil storage tank body (11), a level gauge (14) disposed outside the methyl silicone oil storage tank body (11), and pads (15) fixed to the bottom side of the methyl silicone oil storage tank body (11), characterized in that, The top of the methyl silicone oil storage tank (11) is equipped with an oxygen content detector (12), a pressure gauge (13), and an exhaust assembly (2) located in the center of the methyl silicone oil storage tank (11). The exhaust assembly (2) includes a shroud (21) and an excess air discharge valve. The shroud (21) is placed inside the methyl silicone oil storage tank (11). A nitrogen compensation assembly (3) is provided near the top of the methyl silicone oil storage tank (11).

2. The methyl silicone oil storage tank according to claim 1, characterized in that, The excess air discharge valve includes a housing (22), an intake valve disc (25), an exhaust valve disc (26), and a connector. The intake valve disc (25) and the exhaust valve disc (26) are installed inside the housing (22). The bottom of the housing (22) is provided with an air inlet (23) and an air outlet (27). The air inlet (23) corresponds to the position of the intake valve disc (25), and the air outlet (27) corresponds to the position of the exhaust valve disc (26). The air inlet (23) and the air outlet (27) are designed to be staggered.

3. A methyl silicone oil storage tank according to claim 2, characterized in that, An airflow cavity (24) is provided inside the outer casing (22). The airflow cavity (24) is connected to the air inlet (23) and the air outlet (27). The position of the suction valve disc (25) under normal conditions is higher than that of the discharge valve disc (26) under normal conditions. A connector is provided between the suction valve disc (25) and the discharge valve disc (26).

4. A methyl silicone oil storage tank according to claim 3, characterized in that, The connector includes a connecting plate (28) and three guide rods (29) that penetrate the housing (22). The guide rods (29) are slidably connected to the housing (22) with a matching guide sleeve (210). The guide rods (29) on both sides are screwed to the connecting plate (28), the suction valve disc (25), and the discharge valve disc (26), respectively. The guide rod (29) in the middle penetrates the connecting plate and has a stop block (211) threaded on its top.

5. A methyl silicone oil storage tank according to claim 4, characterized in that, The fairing (21) is connected to the air inlet (23) by a pipe, and the fairing (21) is an inverted conical design.

6. A methyl silicone oil storage tank according to claim 5, characterized in that, The nitrogen compensation component (3) includes a nitrogen inlet pipe (31), a micro-pressure regulating valve (32), and a nitrogen guide pipe (33). The nitrogen inlet pipe (31) is fixed on the tank body (11) of the methyl silicone oil storage tank. The input end of the nitrogen inlet pipe (31) is connected to the output end of the micro-pressure regulating valve (32), and the output end of the nitrogen inlet pipe (31) is connected to the input end of the nitrogen guide pipe (33).

7. A methyl silicone oil storage tank according to claim 6, characterized in that, The micro-pressure regulating valve (32) is connected to a nitrogen cylinder / barrel. The nitrogen guide pipe (33) is a ring design. Several nitrogen inlet ports (34) are provided at the bottom of the nitrogen guide pipe (33) along the circumference of the nitrogen guide pipe (33).

8. A methyl silicone oil storage tank according to claim 7, characterized in that, The nitrogen guide pipe (33) is located on the outer side of the bottom end near the shroud (21), and there is a gap between them. A support frame (35) for supporting the nitrogen guide pipe (33) is provided between the nitrogen guide pipe (33) and the inner wall of the methyl silicone oil storage tank (11).

9. A methyl silicone oil storage tank according to claim 8, characterized in that, The front end of the support frame (35) is open and in the shape of a "C". The support frame (35) is arranged around the nitrogen gas guide pipe (33) and the rear end of the support frame (35) is fixed on the inner wall of the methyl silicone oil storage tank (11).

10. A methyl silicone oil storage tank according to claim 9, characterized in that, The probes of the oxygen content detector (12) and the pressure gauge (13) are both placed inside the methyl silicone oil storage tank (11).

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