High level tank and compressor system
By designing a high-level oil tank with multiple oil outlet pipes and oil level sensors, the problem of complex lubricating oil quantity control under the coasting state of the compressor unit was solved, achieving precise lubricating oil supply and protecting the key components of the compressor unit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SIEMENS IND TURBOMACHINERY (HULUDAO) CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-24
AI Technical Summary
In large compressor units or multi-unit series units, when the compressor unit is in coasting mode, the amount of lubricating oil provided by the high-level oil tank is difficult to control, making it difficult to ensure that key components such as bearings do not dry-grind due to lack of oil, which could lead to equipment damage.
Design an elevated oil tank comprising a tank body and multiple oil outlet pipes. The first end of the oil outlet pipe is located inside the tank body, and the second end is located outside and connected to the compressor unit. Oil is supplied through multiple oil outlet pipes during the compressor unit's coasting state. The pipe spacing is different to control the amount of lubricating oil supplied. Combined with oil level sensors and support structures, stable oil supply is ensured.
It enables precise control of the lubricating oil quantity by coordinating multiple oil outlet pipes to supply oil during the compressor unit's idle state, avoiding the problem of excessive or insufficient lubricating oil supply and protecting the critical components of the compressor unit.
Smart Images
Figure CN224551259U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial process automation control technology, and in particular to a high-level oil tank and compressor system. Background Technology
[0002] As a crucial component of the compressor unit's lubrication system, the elevated oil tank ensures that when the compressor unit stops normally or is forced to shut down due to other unforeseen circumstances, it can supply lubricating oil to the unit using gravitational potential energy. This ensures that in the event of a failure in the main oil supply system, critical components such as bearings will not experience dry friction due to lack of oil, thus protecting the unit and preventing greater losses caused by equipment damage.
[0003] However, in the operation of large units or multi-unit series units, the large number of rotating parts in the compressor unit makes it complex to control the amount of oil supplied by the high-level oil tank when the unit is in coasting state. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a high-level oil tank to at least solve or alleviate these problems.
[0005] According to a first aspect of the present invention, a high-level oil tank is provided for use in a compressor unit. The high-level oil tank includes a tank body and multiple oil outlet pipes. The tank body contains lubricating oil, and the multiple oil outlet pipes are connected to the compressor unit. The high-level oil tank supplies the lubricating oil from the tank body to the compressor unit through the multiple oil outlet pipes. The multiple oil outlet pipes extend from the inside of the tank body to the bottom of the tank body. A first end of the oil outlet pipe is located inside the tank body, and a second end of the oil outlet pipe is located outside the tank body. The second end of the oil outlet pipe is connected to the compressor unit. When the compressor unit is in an idle state, causing the main oil supply tank to stop supplying oil, the lubricating oil in the tank body with a liquid level higher than the first end of the oil outlet pipe flows through the oil outlet pipe to the second end of the oil outlet pipe to supply oil to the compressor unit. The distance between the first end of each of the multiple oil outlet pipes and the bottom of the tank body is different.
[0006] Optionally, the high-level oil tank further includes a support portion, which is disposed at the bottom of the tank body and stabilizes the tank body on the mounting plane.
[0007] Optionally, the elevated oil tank further includes a hanging lug, which is disposed on the top of the tank body. The elevated oil tank is moved to the mounting plane by driving an installation rope passing through a through hole provided on the hanging lug.
[0008] Optionally, the high-level oil tank further includes an oil level sensor, which extends from the inside of the tank to the outside of the tank, and the oil level sensor acquires the level of lubricating oil in the tank.
[0009] Optionally, the high-level oil tank further includes a vent pipe, which is located at the top of the tank body. When lubricating oil is poured into the tank body, the gas inside the tank body is discharged to the outside of the tank body through the vent pipe.
[0010] Optionally, the tank has a capacity to hold a first required amount of oil, which is equal to the first required amount of lubricating oil when the compressor unit is in an idle state, as the speed of the compressor unit decreases from the rated speed to 0.
[0011] Optionally, during the process of the compressor unit entering a coasting state and the compressor unit's speed decreasing from the rated speed to a first speed over a first duration, the high-level oil tank supplies oil to the compressor unit through the multiple oil outlet pipes, thereby causing the oil level of the lubricating oil inside the tank to drop from the initial height to the first connecting pipe height. The initial height is the oil level in the tank after the first required amount of lubricating oil has been added, and the first connecting pipe height is the highest among the multiple oil outlet pipes. During the process of the compressor unit entering a coasting state and the compressor unit's speed decreasing from the first speed to a second speed over a second duration, the high-level oil tank supplies oil to the compressor unit through an oil outlet pipe with a connecting pipe height lower than the first connecting pipe height, thereby causing the oil level of the lubricating oil inside the tank to drop from the first connecting pipe height to the second connecting pipe height. The second duration is longer than the first duration, and the second speed is less than the first speed but greater than 0.
[0012] Optionally, the plurality of oil outlet pipes have a first effective pipe diameter in which the oil supply during the first time period is equal to the second demand for lubricating oil during the process when the speed of the compressor unit in the coasting state decreases from the rated speed to the first speed.
[0013] Optionally, the plurality of oil outlet pipes further includes a third oil outlet pipe, which includes: a third oil inlet located inside the tank body at a third connecting pipe height from the bottom of the tank body; a third pipe extending from the third oil inlet towards the bottom of the tank body and out of the tank body; and a third oil outlet outside the third pipe. The third connecting pipe height is the lowest connecting pipe height among the plurality of oil outlet pipes. During the process where the compressor unit enters the coasting state and the speed of the compressor unit decreases from the second speed to 0 after a third duration, the high-level oil tank supplies oil to the compressor unit through the oil outlet pipes included in the plurality of oil outlet pipes, whose connecting pipe height is less than the second connecting pipe height. This causes the oil level of the lubricating oil inside the tank body to drop from the second connecting pipe height to the third connecting pipe height, wherein the third duration is greater than the second duration.
[0014] Optionally, the oil outlet pipes, excluding those with a pipe height greater than or equal to the first pipe height, have a second effective pipe diameter whose oil supply during the second time period is equal to the third demand for lubricating oil during the process of the compressor unit's rotational speed decreasing from the first rotational speed to the second rotational speed when it is in a coasting state; the oil outlet pipes, excluding those with a pipe height less than the second pipe height, have a third effective pipe diameter whose oil supply during the third time period is equal to the fourth demand for lubricating oil during the process of the compressor unit's rotational speed decreasing from the second rotational speed to 0 when it is in a coasting state.
[0015] Optionally, a manhole is provided on the side wall of the tank, and a pipe is provided on the edge of the manhole. A cover is installed on the end face of the pipe away from the tank.
[0016] According to a second aspect of the present invention, a compressor system is provided, including an elevated oil tank and a compressor unit as described in any of the first aspects of the embodiments, wherein when the compressor unit is in an idle state, the elevated oil tank provides lubricating oil to the compressor unit (30).
[0017] As can be seen from the above technical solution, by setting multiple oil outlet pipes with different distances between their first ends and the bottom of the tank, sufficient lubricating oil can be provided to the compressor unit through multiple oil outlet pipes when the compressor unit is in a coasting state. Furthermore, as the compressor unit speed gradually decreases, some oil outlet pipes gradually stop supplying oil, thus avoiding the problem of excessive lubricating oil supply. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.
[0019] Figure 1 This is a schematic diagram of a high-level fuel tank according to an embodiment of this application;
[0020] Figure 2 This is a front view of the high-level fuel tank according to an embodiment of this application;
[0021] Figure 3 This is a top view of an elevated fuel tank according to an embodiment of this application;
[0022] Figure 4 This is a schematic diagram of the connection between the first oil outlet pipe and the compressor unit according to an embodiment of this application.
[0023] List of reference numerals in the attached diagram:
[0024] Detailed Implementation
[0025] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art should fall within the protection scope of this utility model.
[0026] Figure 1 This is a schematic diagram of a high-level fuel tank according to an embodiment of this application. Figure 2 This is a front view of the high-level fuel tank according to an embodiment of this application. Figure 3 This is a top view of an elevated fuel tank according to an embodiment of this application. Figure 4 This is a schematic diagram of the connection between the first oil outlet pipe and the compressor unit 30 according to an embodiment of this application, as shown below. Figure 1-4As shown, the elevated oil tank 10 is applied to the compressor unit 30. It is understood that the installation position of the elevated oil tank 10 is higher than the installation position of the compressor unit 30. During the oil supply process of the elevated oil tank 10, oil is supplied through gravitational potential energy. The elevated oil tank 10 includes: a tank body 11 and multiple oil outlet pipes. The tank body 11 contains lubricating oil, and the multiple oil outlet pipes are connected to the compressor unit 30. The elevated oil tank 10 supplies lubricating oil from the tank body 11 to the compressor unit 30 through the multiple oil outlet pipes. The oil outlet pipes include: a first oil outlet pipe 12 and a second oil outlet pipe 13. The first oil outlet pipe 12 includes: a first oil inlet located inside the tank body 11 at a first connecting pipe height from the bottom of the tank body 11; a first pipe extending from the first oil inlet towards the bottom of the tank body 11 and out of the tank body 11; and a first oil outlet outside the first pipe. The second oil outlet pipe 13 includes: a second oil inlet located inside the tank body 11 at a distance of the second pipe height from the bottom of the tank body 11; a second pipe extending from the second oil inlet toward the bottom of the tank body 11 and out of the tank body 11; and a second oil outlet outside the second pipe.
[0027] The height of the first connecting pipe is greater than the height of the second connecting pipe. During the oil supply process to the compressor unit 30, when the oil level of the lubricating oil inside the tank 11 is higher than the height of the first connecting pipe, oil is supplied to the compressor unit 30 through the first oil outlet pipe 12 and the second oil outlet pipe 13. When the oil level of the lubricating oil inside the tank 11 is lower than the height of the first connecting pipe but higher than the height of the second connecting pipe, oil is supplied to the compressor unit 30 through the second oil outlet pipe 13. This changes the different stages of oil supply from the high-level oil tank 10 to the compressor unit 30, allowing for different flow rates.
[0028] The elevated oil tank 10 is installed higher than the compressor unit 30. This is because the elevated oil tank 10 needs to supply lubricating oil to the compressor unit 30 through gravitational potential energy. Therefore, there must be a height difference between the elevated oil tank 10 and the compressor unit 30, and the elevated oil tank 10 must be at a higher position to ensure that the lubricating oil in the tank 11 can flow to the compressor unit 30 through multiple oil outlet pipes. The elevated oil tank 10 is equivalent to the backup oil supply system of the compressor unit 30. When the compressor unit 30 is operating normally, the elevated oil tank 10 will not supply oil to the compressor unit 30, and the compressor unit 30 will be supplied with oil by the main oil supply system. When the compressor unit 30 stops normally or stops due to other emergencies, the compressor unit 30 will enter the idle state. In the idle state, the main oil supply system will stop supplying oil to the compressor unit 30. At this time, the high-level oil tank 10 starts to supply oil to the compressor unit 30. The lubricating oil in the tank 11 flows from the oil inlet of the oil outlet pipe through the pipe body to the second end of the oil outlet of the oil outlet pipe, and then flows to the compressor unit 30, thus realizing the supply of oil to the compressor unit 30. Meanwhile, since the distance between the oil inlet of each of the multiple oil outlet pipes and the bottom of the tank 11 is different, the level of lubricating oil in the tank 11 will gradually decrease during the oil supply process of the high-level oil tank 10. At the beginning of the oil supply stage, the compressor unit 30 is at its rated speed and has the highest demand for lubricating oil. At this time, since the level of lubricating oil in the tank 11 is relatively high, multiple oil outlet pipes, including the first oil outlet pipe 12 and the second oil outlet pipe 13, will supply oil simultaneously, so that the oil supply rate of the high-level oil tank 10 is relatively high and can match the demand of the compressor unit 30 for lubricating oil. As the lubricating oil level drops, it may fall below the inlet of the first oil outlet pipe 12, causing the first oil outlet pipe 12 to stop supplying oil. However, the second oil outlet pipe 13 will continue to supply oil. At this time, the oil supply rate of the high-level oil tank 10 will gradually decrease. Meanwhile, as the speed of the compressor unit 30 also gradually decreases, the demand for lubricating oil will also decrease. At this time, the oil supply rate of the high-level oil tank 10 can meet the lubricating oil demand of the compressor unit 30.
[0029] Specifically, the multiple oil outlet pipes may further include a third oil outlet pipe 14. The third oil outlet pipe 14 includes: a third oil inlet located inside the tank 11 at a distance of the third connecting pipe height from the bottom of the tank 11; a third pipe extending from the third oil inlet towards the bottom of the tank 11 and out of the tank 11; and a third oil outlet outside the third pipe. The height of the third connecting pipe is less than the height of the second connecting pipe. During the oil supply process to the compressor unit 30, when the oil level of the lubricating oil inside the tank is higher than the height of the first connecting pipe, oil is supplied to the compressor unit 30 through the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14. When the oil level of the lubricating oil inside the tank 11 is lower than the height of the first connecting pipe but higher than the height of the second connecting pipe, oil is supplied to the compressor unit 30 through the second oil outlet pipe 13 and the third oil outlet pipe 14. When the oil level of the lubricating oil inside the tank 11 is lower than the height of the second connecting pipe but higher than the height of the third connecting pipe, oil is supplied to the compressor unit 30 through the third oil outlet pipe 14.
[0030] The tank 11 can be equipped with three oil outlet pipes: a first oil outlet pipe 12, a second oil outlet pipe 13, and a third oil outlet pipe 14. The distance between the oil inlet ports of the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 and the bottom of the tank 11 decreases sequentially. Therefore, when the high-level oil tank 10 starts supplying oil to the compressor unit 30, the tank 11 is full of oil, and the level of lubricating oil inside the tank 11 is higher than the first, second, and third oil inlet ports. At this time, the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 simultaneously supply oil to the compressor unit 30. During the oil supply process, the level of lubricating oil inside the tank 11 gradually decreases. When the level of lubricating oil is lower than the oil inlet ports, the first oil outlet pipe 12 stops supplying oil, and the second oil outlet pipe 13 and the third oil outlet pipe 14 simultaneously supply oil to the compressor unit 30. The high-level oil tank 10 continues to supply oil to the compressor unit 30, causing the liquid level to continue to drop. When the liquid level is lower than the second oil inlet, the second oil outlet pipe 13 stops supplying oil. At this time, only the third oil outlet pipe 14 supplies oil to the compressor unit 30. By setting the first oil outlet pipe 12, the second oil outlet pipe 13 and the third oil outlet pipe 14, the oil supply can be stopped sequentially during the oil supply process to the compressor unit 30, thereby controlling the rate of oil supply to the compressor unit 30.
[0031] In addition, a third oil inlet can be set flush with the bottom of the tank 11, so that the third oil outlet pipe 14 will supply oil to the compressor unit 30 until the lubricating oil inside the tank 11 is drained.
[0032] Specifically, the high-level oil tank 10 also includes a support part 15, which is located at the bottom of the tank body 11 and stabilizes the tank body 11 on the mounting plane.
[0033] Since the tank 11 is cylindrical, it is not stable to place the tank 11 directly on the mounting surface. Therefore, a support part 15 is provided at the bottom of the tank 11. The support part 15 supports and fixes the tank 11, which can make the tank 11 stable on the mounting surface.
[0034] Specifically, the high-level oil tank 10 also includes: a hanging lug 16, which is set on the top of the tank body 11. The high-level oil tank 10 is moved to the mounting plane by driving the installation rope that passes through the through hole set on the hanging lug 16.
[0035] Since the high-level oil tank 10 needs to be installed at a high position, and the high-level oil tank 10 itself is relatively heavy, in order to facilitate transportation, two hanging ears 16 are provided on the top of the tank body 11. The hanging ears 16 have through holes. When transporting the high-level oil tank 10, the installation rope is passed through the high-level oil tank 10 and connected to the drive device. The drive device drives the installation rope, thereby moving the high-level oil tank 10 to the installation surface.
[0036] Specifically, the high-level oil tank 10 also includes an oil level sensor 17, which extends from the inside of the tank 11 to the outside of the tank 11 and obtains the level of lubricating oil in the tank 11.
[0037] In order to know the total amount of lubricating oil inside the tank 11, an oil level sensor 17 is installed. The oil level sensor 17 can be used to know the liquid level height of the lubricating oil inside the tank 11, and then the specific stage of the compressor unit 30 in the coasting state can be calculated based on the liquid level height.
[0038] Specifically, the high-level oil tank 10 also includes a vent pipe 18, which is located at the top of the tank body 11. When lubricating oil is poured into the tank body 11, the gas inside the tank body 11 is discharged to the outside of the tank body 11 through the vent pipe 18.
[0039] Since the inside of tank 11 is not a vacuum before lubricating oil is poured in, air and residual gas from the previous oil supply process will be present. Therefore, after the lubricating oil is poured into tank 11, the gas inside is compressed, preventing the tank from being completely filled. To address this, a vent pipe 18 is installed to expel the gas inside tank 11 during lubricating oil pouring, ensuring complete filling. Furthermore, the end of the vent pipe 18 furthest from tank 11 can be connected to a recovery device. This device can revert the gas generated by the lubricating oil back into lubricating oil, thereby reducing production costs.
[0040] Specifically, a manhole is provided on the side wall of the tank 11, and a pipe is provided on the edge of the manhole. A cover 19 is installed on the end face of the pipe away from the tank 11.
[0041] Because the interior of tank 11 requires regular maintenance, a manhole is provided on the side wall of tank 11. When tank 11 is not under maintenance, the manhole cover 19 is fitted onto the pipe to prevent liquid inside tank 11 from leaking out through the manhole. When maintenance is required, the manhole cover 19 is removed from the pipe, allowing maintenance personnel to access the interior of tank 11 through the manhole.
[0042] Specifically, an oil inlet pipe 20 is provided at the top of the tank 11, through which lubricating oil is injected into the tank 11.
[0043] Specifically, the tank 11 has a capacity to hold a first required amount of oil, which is equal to the first required amount of lubricating oil when the compressor unit 30 is in an idle state, during the process of the compressor unit 30's speed decreasing from the rated speed to 0.
[0044] Since the purpose of the high-level oil tank 10 is to supply oil to the compressor unit 30 during its coasting process, and the high-level oil tank 10 does not actively control the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 during the oil supply process, and since the oil inlet of the third oil outlet pipe 14 is located at the bottom of the tank body 11, this means that during the oil supply process, the third oil outlet pipe 14 will ensure that all the lubricating oil in the tank body 11 is supplied to the compressor unit 30. Therefore, in order to avoid the compressor unit 30 running out of oil during coasting or the third oil outlet pipe 14 continuing to supply oil to the compressor unit 30 after the compressor unit 30 speed drops to 0, the first demand for lubricating oil during the process of the compressor unit 30 speed decreasing from the rated speed to 0 is first calculated. Then, the capacity of the tank body 11 is set to be equal to the first demand, ensuring that after the tank body 11 is filled, the lubricating oil inside is just enough to meet the lubricating oil demand of the compressor unit 30 when its speed decreases from the rated speed to 0 during coasting.
[0045] Specifically, during the process where the compressor unit 30 enters the idle state and the speed of the compressor unit 30 decreases from the rated speed to the first speed over a first duration, the high-level oil tank 10 supplies oil to the compressor unit 30 through multiple oil outlet pipes, thereby causing the oil level of the lubricating oil inside the tank 11 to drop from the initial height to the first connecting pipe height. The initial height is the oil level in the tank 11 after the first required amount of lubricating oil is added, and the first connecting pipe height is the highest connecting pipe height among the multiple oil outlet pipes.
[0046] During the process of the compressor unit 30 reducing its speed from the rated speed to the first speed, the compressor unit 30 has a large demand for lubricating oil per unit time, which is usually the same as the amount of oil supplied by the main oil supply system per unit time during normal operation of the compressor unit 30. Therefore, during this process, multiple oil outlet pipes supply oil to the compressor unit 30 at the same time.
[0047] It should be noted that the multiple oil outlet pipes may include not only the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14. When the multiple oil outlet pipes include other oil outlet pipes, it is only necessary to ensure that during the process of the compressor unit 30 entering the idle state and the speed of the compressor unit 30 decreasing from the rated speed to the first speed after a first duration, the high-level oil tank 10 supplies oil to the compressor unit 30 through the multiple oil outlet pipes, so that the oil level of the lubricating oil inside the tank 11 decreases from the initial height to the height of the first connecting pipe.
[0048] During the process where the compressor unit 30 enters the idle state and the speed of the compressor unit 30 decreases from the first speed to the second speed over a second duration, the high-level oil tank 10 supplies oil to the compressor unit 30 through multiple oil outlet pipes, including oil outlet pipes whose pipe height is lower than the first pipe height. This causes the oil level of the lubricating oil inside the tank 11 to decrease from the first pipe height to the second pipe height. The second duration is longer than the first duration, and the second speed is less than the first speed but greater than 0.
[0049] As the speed of the compressor unit 30 decreases from the first speed to the second speed, the oil level of the lubricating oil inside the tank 11 drops to the height of the first connecting pipe. Therefore, the oil outlet pipe with a connecting pipe height greater than or equal to the height of the first connecting pipe cannot supply oil. At this time, the compressor unit 30 is supplied with oil through other oil outlet pipes among the multiple oil outlet pipes, so that the oil level of the lubricating oil inside the tank 11 drops from the height of the first connecting pipe to the height of the second connecting pipe.
[0050] Specifically, the multiple oil outlet pipes also include a third oil outlet pipe 14. The third oil outlet pipe 14 includes: a third oil inlet located inside the tank 11 at a distance of a third connecting pipe height from the bottom of the tank 11; a third pipe extending from the third oil inlet towards the bottom of the tank 11 and out of the tank 11; and a third oil outlet outside the third pipe. The third connecting pipe height is the lowest among the connecting pipe heights of the multiple oil outlet pipes. During the process where the compressor unit 30 enters the coasting state and the speed of the compressor unit 30 decreases from the second speed to 0 over a third duration, the high-level oil tank 10 supplies oil to the compressor unit 30 through the multiple oil outlet pipes, including an oil outlet pipe with a connecting pipe height lower than the second connecting pipe height. This causes the oil level of the lubricating oil inside the tank 11 to drop from the second connecting pipe height to the third connecting pipe height, wherein the third duration is longer than the second duration.
[0051] During the process of compressor unit 30 reducing its speed from rated speed to the first speed, the compressor unit 30 has a relatively large demand for lubricating oil per unit time, which is usually the same as the oil supply volume of the main oil supply system during normal operation. Therefore, during this process, it is necessary to ensure that the oil outlet ports of the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 are all lower than the lubricating oil level in tank 11. Therefore, it can be calculated that after tank 11 is filled with lubricating oil, and after the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 discharge oil simultaneously for a first time, the remaining lubricating oil level in tank 11 is the first connecting pipe height. During this process, the compressor unit 30's speed reduces from rated speed to the first speed.
[0052] It can be calculated that after tank 11 is filled with lubricating oil, and after oil is simultaneously discharged through the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 for a first duration, and then simultaneously discharged through the second oil outlet pipe 13 and the third oil outlet pipe 14 for a second duration, the remaining lubricating oil level in tank 11 is the height of the second connecting pipe. During this process, the speed of compressor unit 30 decreases from the first speed to the second speed. Similarly, it can be calculated that after tank 11 is filled with lubricating oil, and after oil is simultaneously discharged through the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 for a first duration, then simultaneously discharged through the second oil outlet pipe 13 and the third oil outlet pipe 14 for a second duration, and then simultaneously discharged through the third oil outlet pipe 14 for a third duration, the remaining lubricating oil level in tank 11 is the height of the third connecting pipe. During this process, the speed of compressor unit 30 decreases from the second speed to 0.
[0053] For example, when multiple oil outlet pipes include only the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14, the first speed can be 25% of the rated speed, and the second speed can be 7.5% of the rated speed. When the compressor unit 30 is in a coasting state, during the process of the speed decreasing from 100% of the rated speed to 25% of the rated speed, oil is supplied to the compressor unit 30 through the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14. When the compressor unit 30 is in a coasting state, during the process of the speed decreasing from 25% of the rated speed to 7.5% of the rated speed, oil is supplied to the compressor unit 30 through the second oil outlet pipe 13 and the third oil outlet pipe 14. When the compressor unit 30 is in a coasting state, during the process of the speed decreasing from 7.5% of the rated speed to 0, oil is supplied to the compressor unit 30 through the third oil outlet pipe 14.
[0054] Specifically, the multiple oil outlet pipes have a first effective pipe diameter that provides oil supply within a first duration equal to the second demand for lubricating oil during the process when the compressor unit 30 is in an idle state and its speed decreases from the rated speed to the first speed.
[0055] Among the multiple oil outlet pipes, except for the oil outlet pipe with a pipe height greater than or equal to the first pipe height, the oil outlet pipes have a second effective pipe diameter that provides oil supply equal to the third demand for lubricating oil during the process when the compressor unit 30 is in a coasting state and its speed decreases from the first speed to the second speed. Among the multiple oil outlet pipes, the oil outlet pipe with a pipe height less than the second pipe height has a third effective pipe diameter that provides oil supply equal to the fourth demand for lubricating oil during the process when the compressor unit 30 is in a coasting state and its speed decreases from the second speed to 0 speed.
[0056] Based on the demand for lubricating oil during the speed change phase of the compressor unit 30 in the idle state, and the corresponding duration of that phase, the flow rate of oil supplied by the tank 11 through the oil outlet pipe during that phase can be determined, and then the effective pipe diameter can be determined based on the flow rate.
[0057] In addition, the effective diameter of the oil outlet pipe can be determined as follows: During the process of the compressor unit 30 reducing its speed from the rated speed to the first speed, the compressor unit 30 requires a faster oil supply rate, usually the same as the oil supply rate of the main oil supply system during normal operation. This process is simultaneously supplied by the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14. Therefore, the sum of the effective diameters of the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14 can be calculated using the oil supply rate of the main oil supply system, the second demand, and the first duration of the compressor unit 30's speed reduction from the rated speed to the first speed. The oil supply rate required by the compressor unit 30 during the process of reducing its speed from the first speed to the second speed can be calculated using the following formula:
[0058]
[0059] in, This is used to characterize the oil supply rate required by the compressor unit 30 during the process of reducing the speed of the compressor unit 30 from a first speed to a second speed. Used to characterize the fuel supply rate of the main fuel supply system. Used to characterize the rated speed This is used to characterize the first rotational speed. After obtaining the oil supply rate required by the compressor unit 30 during the process of reducing its rotational speed from the first speed to the second speed, the sum of the effective cross-sections of the second oil outlet pipe 13 and the third oil outlet pipe 14 can be calculated using the oil supply rate required by the compressor unit 30 during the process of reducing its rotational speed from the first speed to the second speed, the third demand, and the second duration. Similarly, the oil supply rate required by the compressor unit 30 during the process of reducing its rotational speed from the second speed to 0 when the compressor unit 30 is in a coasting state can be calculated, and then the effective pipe diameter of the third oil outlet pipe 14 can be calculated by combining the fourth demand and the third duration. Finally, based on the effective pipe diameters of the first oil outlet pipe 12, the second oil outlet pipe 13, and the third oil outlet pipe 14, the effective cross-section of the first oil outlet pipe 12 and the effective pipe diameter of the second oil outlet pipe 13 are determined respectively.
[0060] In this embodiment, by providing multiple oil outlet pipes with different distances between their first ends and the bottom of the tank 11, sufficient lubricating oil can be provided to the compressor unit 30 when it is in a coasting state. Furthermore, as the compressor unit 30's speed gradually decreases, some oil outlet pipes gradually stop supplying oil, thus avoiding the problem of excessive lubricating oil supply.
[0061] One embodiment of this application provides a compressor system, including a high-level oil tank 10 and a compressor unit 30.
[0062] It should be noted that not all steps and modules in the above processes and system structure diagrams are mandatory; some steps or modules can be omitted as needed. The execution order of each step is not fixed and can be adjusted as required. The system structure described in the above embodiments can be a physical structure or a logical structure. That is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or they may be jointly implemented by certain components in multiple independent devices.
[0063] In this patent application, nouns and pronouns relating to people are not limited to specific genders.
[0064] In the above embodiments, the hardware modules can be implemented mechanically or electrically. For example, a hardware module may include permanent, dedicated circuitry or logic (such as a dedicated processor, FPGA, or ASIC) to perform the corresponding operations. The hardware module may also include programmable logic or circuitry (such as a general-purpose processor or other programmable processor), which can be temporarily configured by software to perform the corresponding operations. The specific implementation method (mechanical, dedicated, permanent circuitry, or temporarily configured circuitry) can be determined based on cost and time considerations.
[0065] The present application has been shown and described in detail above with reference to the accompanying drawings and preferred embodiments. However, the present application is not limited to these disclosed embodiments. Based on the above multiple embodiments, those skilled in the art will know that more embodiments of the present application can be obtained by combining the code review methods in the different embodiments above. These embodiments are also within the protection scope of the present application.
Claims
1. A high-level oil tank (10) applied to a compressor unit (30), characterized in that, The high-level oil tank (10) includes: a tank body (11) and multiple oil outlet pipes. The tank body (11) contains lubricating oil. The multiple oil outlet pipes are connected to the compressor unit (30). The high-level oil tank (10) supplies the lubricating oil in the tank body (11) to the compressor unit (30) through the multiple oil outlet pipes. The oil outlet pipes include: a first oil outlet pipe (12) and a second oil outlet pipe (13). The first oil outlet pipe (12) includes: a first oil inlet located inside the tank (11) at a first pipe height from the bottom of the tank (11), a first pipe extending from the first oil inlet toward the bottom of the tank (11) and out of the tank (11), and a first oil outlet outside the first pipe. The second oil outlet pipe (13) includes: a second oil inlet located inside the tank (11) at a second pipe height from the bottom of the tank (11), a second pipe extending from the second oil inlet toward the bottom of the tank (11) and out of the tank (11), and a second oil outlet outside the second pipe; The height of the first connecting pipe is greater than the height of the second connecting pipe. During the oil supply process to the compressor unit (30), when the oil level of the lubricating oil inside the tank (11) is higher than the height of the first connecting pipe, oil is supplied to the compressor unit (30) through the first oil outlet pipe (12) and the second oil outlet pipe (13). When the oil level of the lubricating oil inside the tank (11) is lower than the height of the first connecting pipe and higher than the height of the second connecting pipe, oil is supplied to the compressor unit (30) through the second oil outlet pipe (13) to change the different stages of the oil supply from the high-level oil tank (10) to the compressor unit (30) and supply oil at different rates.
2. The high-level oil tank (10) according to claim 1, characterized in that, The high-level oil tank (10) further includes a support (15), which is located at the bottom of the tank body (11) and stabilizes the tank body (11) on the mounting plane.
3. The high-level oil tank (10) according to claim 2, characterized in that, The high-level oil tank (10) further includes a hanging ear (16), which is located on the top of the tank body (11). The high-level oil tank (10) is moved to the mounting plane by driving the installation rope that passes through the through hole on the hanging ear (16).
4. The high-level oil tank (10) according to claim 1, characterized in that, The high-level oil tank (10) further includes an oil level sensor (17), which extends from the inside of the tank (11) to the outside of the tank (11) and obtains the level of lubricating oil in the tank (11).
5. The high-level oil tank (10) according to claim 1, characterized in that, The high-level oil tank (10) further includes a vent pipe (18), which is located at the top of the tank body (11). When lubricating oil is poured into the tank body (11), the gas inside the tank body (11) is discharged to the outside of the tank body (11) through the vent pipe (18).
6. The high-level oil tank (10) according to claim 1, characterized in that, The tank (11) has a capacity to hold a first demand amount of oil, which is equal to the first demand amount of lubricating oil required by the compressor unit (30) when the compressor unit (30) is in an idle state, during the process of the compressor unit (30) speed decreasing from the rated speed to 0.
7. The high-level oil tank (10) according to claim 6, characterized in that, During the process where the compressor unit (30) enters the idle state and the speed of the compressor unit (30) decreases from the rated speed to the first speed after a first duration, the high-level oil tank (10) supplies oil to the compressor unit (30) through the multiple oil outlet pipes, thereby causing the oil level of the lubricating oil inside the tank (11) to drop from the initial height to the first connecting pipe height, wherein the initial height is the oil level in the tank (11) after the first required amount of lubricating oil is added to the tank (11), and the first connecting pipe height is the highest connecting pipe height among the multiple oil outlet pipes; During the process where the compressor unit (30) enters the idle state and the speed of the compressor unit (30) decreases from the first speed to the second speed over a second duration, the high-level oil tank (10) supplies oil to the compressor unit (30) through an oil outlet pipe among the plurality of oil outlet pipes whose pipe height is less than the first pipe height, thereby causing the oil level of the lubricating oil inside the tank (11) to drop from the first pipe height to the second pipe height, wherein the second duration is greater than the first duration and the second speed is less than the first speed and greater than 0.
8. The high-level oil tank (10) according to claim 7, characterized in that, The plurality of oil outlet pipes have a first effective pipe diameter that provides oil supply during the first duration equal to the second demand for lubricating oil during the process when the speed of the compressor unit (30) in the coasting state decreases from the rated speed to the first speed.
9. The high-level oil tank (10) according to claim 8, characterized in that, The plurality of oil outlet pipes also include a third oil outlet pipe (14), the third oil outlet pipe (14) comprising: a third oil inlet located inside the tank body (11) at a third pipe height from the bottom of the tank body (11), a third pipe extending from the third oil inlet toward the bottom of the tank body (11) and out of the tank body (11), and a third oil outlet outside the third pipe, wherein the third pipe height is the lowest pipe height among the pipe heights of the plurality of oil outlet pipes; During the process where the compressor unit (30) enters the idle state and the speed of the compressor unit (30) decreases from the second speed to 0 over a third duration, the high-level oil tank (10) supplies oil to the compressor unit (30) through the multiple oil outlet pipes, including an oil outlet pipe with a pipe height lower than the second pipe height, thereby causing the oil level of the lubricating oil inside the tank (11) to drop from the second pipe height to the third pipe height, wherein the third duration is longer than the second duration.
10. The high-level oil tank (10) according to claim 9, characterized in that, The oil outlet pipes, except for those with a pipe height greater than or equal to the first pipe height, have a second effective pipe diameter that provides oil supply equal to the third demand for lubricating oil during the second time period when the compressor unit (30) is in a coasting state and its speed decreases from the first speed to the second speed. Among the plurality of oil outlet pipes, the oil outlet pipe with a pipe height less than the second pipe height has a third effective pipe diameter that provides oil supply equal to the fourth demand for lubricating oil during the process when the speed of the compressor unit (30) decreases from the second speed to 0 when it is in the coasting state.
11. The high-level oil tank (10) according to any one of claims 1-10, characterized in that, The tank (11) has a manhole on its side wall, and a pipe is provided on the edge of the manhole. A cover (19) is installed on the end face of the pipe away from the tank (11).
12. A compressor system, characterized in that, Includes the high-level oil tank (10) and compressor unit (30) as described in any one of claims 1-11; When the compressor unit (30) is in an idle state, the high-level oil tank (10) provides lubricating oil to the compressor unit (30).