CN222457578U - Gas turbine multi-stage variable oil pump - Google Patents
Gas turbine multi-stage variable oil pump Download PDFInfo
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- CN222457578U CN222457578U CN202421183147.4U CN202421183147U CN222457578U CN 222457578 U CN222457578 U CN 222457578U CN 202421183147 U CN202421183147 U CN 202421183147U CN 222457578 U CN222457578 U CN 222457578U
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Abstract
本实用新型涉及一种燃气轮机多级可变滑油泵，属于燃气轮机技术领域。包括用于与燃气轮机连接的壳体，壳体内集成设置用于将滑油从油箱吸油并增压的增压级组件、用于对流经燃气轮机各传动部件后的滑油泵回至油箱的回油级组件，增压级组件和回油级组件通过传动轴与燃机附件齿轮箱传动连接；本实用新型结构简单，实现了抽油增压效果，节约了能源。
The utility model relates to a multi-stage variable lubricating oil pump for a gas turbine, belonging to the technical field of gas turbines. It comprises a housing for connecting with a gas turbine, a supercharging stage assembly for sucking and pressurizing lubricating oil from an oil tank, and an oil return stage assembly for pumping lubricating oil after passing through various transmission components of the gas turbine back to the oil tank, the supercharging stage assembly and the oil return stage assembly are connected to the gear box of the accessory of the gas turbine through a transmission shaft; the utility model has a simple structure, realizes the effect of pumping and pressurizing, and saves energy.
Description
Technical Field
The utility model relates to a multistage variable lubricating oil pump of a gas turbine, and belongs to the technical field of gas turbines.
Background
When the gas turbine runs, the transmission part and each bearing cavity of the gas turbine are required to be lubricated and cooled by lubricating oil, sealing is performed by air, and the like, high-pressure clean lubricating oil is required to lubricate the bearing cavity in the bearing cavity, and meanwhile, the lubricating oil after lubrication is required to be pumped back to an oil tank for cooling and filtering.
Chinese patent (CN 106246351B) discloses a lubricating oil pump for a gas turbine, and proposes a lubricating oil pump provided with a pressurizing stage and an oil return stage, but the oil return stage is mainly returned by pressure difference, and has no pumping and pressurizing effects, and its structure is relatively complex.
Disclosure of utility model
The utility model aims to solve the technical problems of overcoming the defects of the prior art, providing the multistage variable lubricating oil pump of the gas turbine, which has a simple structure, realizes the oil pumping and pressurizing effects and saves energy.
The utility model relates to a multistage variable lubricating oil pump of a gas turbine, which comprises a shell, wherein the shell is used for being connected with the gas turbine, a pressurizing stage assembly and an oil return stage assembly are integrated in the shell, the pressurizing stage assembly is used for sucking out lubricating oil from an oil tank and pressurizing the lubricating oil, the oil return stage assembly is used for pumping the lubricating oil flowing through each transmission part of the gas turbine back to the oil tank, and the pressurizing stage assembly and the oil return stage assembly are in transmission connection with a gear box of an accessory of the gas turbine through a transmission shaft;
The inlet of the booster stage assembly and the outlet of the oil return stage assembly are communicated to the oil tank through pipelines, the shell is provided with a booster stage inlet and a booster stage outlet corresponding to the booster stage assembly, a plurality of oil return pipelines communicated with the inlet of the oil return stage assembly are further arranged on the shell, the booster stage assembly comprises a booster pump, the oil return stage assembly comprises a plurality of oil return pumps, and the booster pump and the oil return pumps are arc-shaped pantoea gear pumps.
The booster pump pumps out the lubricating oil from the oil tank, pressurizes and then conveys the lubricating oil to each lubrication cavity of the combustion engine, the oil return pump is respectively connected with the bearing cavity corresponding to the combustion engine, and the lubricating oil in the bearing cavity is pumped back to the oil tank, so that the pumping and pressurizing effects are realized. Through being connected with the accessory gear box of the combustion engine, the combustion engine rotates to drive the booster pump and the oil return pump to rotate for boosting, no additional power source is needed, and energy is saved.
The circular arc pantotron gear pump comprises an inner rotor, a rotor shaft, an outer rotor and an eccentric shell, wherein the inner rotor is arranged on the rotor shaft and meshed with the outer rotor, the eccentric shell is arranged outside the outer rotor, the outer rotor can rotate in the eccentric shell, and the inner rotor and the outer rotor are meshed to form an oil suction cavity and an oil discharge cavity.
When the inner rotor is driven by the driving device to rotate around the center, the outer rotor is driven to rotate around the other center in the same direction, and when the volume of the sealed working cavity is gradually increased, the working cavity is communicated with the inlet, a local negative oil pressure area is generated in the working cavity, and oil is sucked through the inlet. When the sealing work is changed from big to small, the working is communicated with the outlet, and the inner working fluid is extruded out through the outlet, so that the oil suction and pressurization process of the pump is realized.
The number of teeth of the outer rotor is larger than that of the inner rotor.
And a temperature sensor is arranged in the oil return pipeline. The temperature sensor is used for detecting the oil return temperature of the lubricating oil and preventing the lubricating oil from being too high.
The booster pump and the oil return pump are both provided with safety valves. When the pressure is increased due to pipeline blockage and the like, the pressure is overflowed through the safety valve, and the booster pump and the oil return pump cannot be damaged.
The inlet of the oil return pump is provided with a filter screen and an oil supply pressure limiting valve.
And a magnetic chip detector is arranged below the filter screen. The magnetic chip detector is connected with the control system and used for detecting the content of metal chips in the lubricating oil, and alarming when the metal chips accumulate to a certain amount.
The transmission shaft, the rotor shaft and the outer circumferences of two ends of the accessory gearbox of the combustion engine are respectively provided with a spline. Through spline connection, the reliability of transmission is improved.
An oil-gas separator pump is also arranged in the shell and connected with an outlet of the oil return pump. Pump for recycling oil through oil-gas separator and recycling the oil and gas to the oil tank after oil and gas separation.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, by arranging the booster pump, lubricating oil is pumped out from the oil tank and pressurized and then is conveyed to each lubricating cavity of the combustion engine, and by arranging the oil return pump and respectively connecting the lubricating oil in the bearing cavities with the corresponding bearing cavities of the combustion engine, the lubricating oil in the bearing cavities is pumped back to the oil tank, so that the pumping and pressurizing effects are realized. Through being connected with the accessory gear box of the combustion engine, the combustion engine rotates to drive the booster pump and the oil return pump to rotate for boosting, no additional power source is needed, and energy is saved.
(2) The circular arc pantotron gear pump comprises an inner rotor, a rotor shaft, an outer rotor and an eccentric shell, wherein the inner rotor is arranged on the rotor shaft and meshed with the outer rotor, the eccentric shell is arranged outside the outer rotor, the outer rotor can rotate in the eccentric shell, and the inner rotor and the outer rotor are meshed to form an oil suction cavity and an oil discharge cavity.
When the inner rotor is driven by the driving device to rotate around the center, the outer rotor is driven to rotate around the other center in the same direction, and when the volume of the sealed working cavity is gradually increased, the working cavity is communicated with the inlet, a local negative oil pressure area is generated in the working cavity, and oil is sucked through the inlet. When the sealing work is changed from big to small, the working is communicated with the outlet, and the inner working fluid is extruded out through the outlet, so that the oil suction and pressurization process of the pump is realized.
(3) A magnetic chip detector is arranged below the filter screen. The magnetic chip detector is connected with the control system and used for detecting the content of metal chips in the lubricating oil, and alarming when the metal chips accumulate to a certain amount.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present utility model;
FIG. 2 is a schematic diagram of the working principle of embodiment 1 of the present utility model;
Fig. 3 is a schematic diagram of the working principle of the circular arc epicycloidal gear.
In the figure, 1, an oil return pipeline; 2, a booster stage outlet, 3, a shell, 4, a transmission shaft, 5, a filter screen, 6, an accessory gear box oil return path, 7, a safety valve, 8, a booster stage inlet, 9, an oil-gas separator oil return path, 10, an oil return pump, 11, a gas turbine accessory gear box oil return pump, 12, a booster pump, 13, an oil-gas separator pump, 14, an oil outlet cavity, 15, an oil suction cavity, 16, an eccentric shell, 17, an inner rotor, 18, an outer rotor, 19 and a rotor shaft.
Detailed Description
The utility model is further described below with reference to examples:
Example 1
As shown in fig. 1-3, the multistage variable lubricating oil pump of the gas turbine comprises a shell 3 connected with the gas turbine, wherein a pressurizing stage assembly for sucking and pressurizing lubricating oil from an oil tank and an oil return stage assembly for returning the lubricating oil flowing through various transmission parts of the gas turbine to the oil tank are integrated in the shell 3, the pressurizing stage assembly and the oil return stage assembly are in transmission connection with a gas turbine accessory gearbox through a transmission shaft 4, a gas turbine accessory gearbox oil return pump 11 is further arranged in the shell 3, and an accessory gearbox oil return channel 6 is arranged on the shell 3 corresponding to the gas turbine accessory gearbox oil return pump 11;
The inlet of the booster stage assembly and the outlet of the oil return stage assembly are both communicated to the oil tank through pipelines, the booster stage inlet 8 and the booster stage outlet 2 are arranged on the shell 3 corresponding to the booster stage assembly, a plurality of oil return pipelines 1 communicated with the inlet of the oil return stage assembly are further arranged on the shell 3, the booster stage assembly comprises a booster pump 12, the oil return stage assembly comprises four oil return pumps 10, the inlets of the oil return pumps 10 are communicated with corresponding bearing cavities of the fuel engine through pipelines, and the outlets of the oil return pumps 10 are communicated with the oil tank through pipelines. The booster pump 12 and the scavenging pump 10 are arc pantoea gear pumps. The booster pump 12 pumps out and boosts the lubricating oil from the oil tank and then conveys the lubricating oil to each lubricating cavity of the combustion engine, the oil return pump 10 is respectively connected with the corresponding bearing cavity of the combustion engine, the lubricating oil in the bearing cavity is pumped back to the oil tank, the pumping and boosting effects are realized, and the flowing direction of the lubricating oil is shown by an arrow in fig. 2.
The circular arc pantotron gear pump comprises an inner rotor 17, a rotor shaft 19, an outer rotor 18 and an eccentric shell 16, wherein the inner rotor 17 is arranged on the rotor shaft 19 and meshed with the outer rotor 18, the eccentric shell 16 is arranged outside the outer rotor 18, the outer rotor 18 can rotate in the eccentric shell 16, and the inner rotor 17 and the outer rotor 18 are meshed to form an oil suction cavity 15 and an oil discharge cavity 14. When the inner rotor 17 is driven by the driving device to rotate around the center, the outer rotor 18 is driven to rotate around the other center in the same direction, and when the volume of the sealed working cavity is gradually increased, the working cavity is communicated with the inlet, a local negative oil pressure area is generated in the working cavity, and oil is sucked through the inlet. When the sealing work is changed from large to small, the work is communicated with the outlet, and the inner working fluid is extruded out through the outlet, so that the process of pumping oil absorption and pressing oil is realized, and the rotating direction of the circular arc pantoea cycloid gear pump is shown as an arrow in figure 3.
The number of teeth of the outer rotor 18 is large in the number of teeth of the inner rotor 17, the number of teeth differs by 1.
A temperature sensor is arranged in the oil return pipeline 1.
The booster pump 12 and the scavenging pump 10 are both provided with a safety valve 7.
The inlet of the oil return pump 10 is provided with a filter screen 5 and an oil supply pressure limiting valve.
A magnetic chip detector is arranged below the filter screen 5.
The outer circumferences of the two ends of the transmission shaft 4, the rotor shaft 19 and the gear box of the accessory of the combustion engine are respectively provided with a spline, the transmission shaft 4 is a main part for transmitting power, the two ends are provided with external splines, the spline at the left end of the transmission shaft 4 is connected with the internal spline of the transmission gear, and the spline at the right side is connected with the spline of the gear box of the accessory of the external combustion engine.
The oil-gas separator pump 13 is also arranged in the shell 3, and the oil return path 9 of the oil-gas separator pump is connected with the outlet of the oil return pump 10.
The current product is applied to a TG30 gas turbine and operates for more than 2000 hours along with the gas turbine. The oil return temperature of each bearing cavity is normal, and the bearing lubrication is normal. The number and specifications of the selected trochoid pumps are different according to different oil return levels, different supercharging levels, different flow rates and different supercharging requirements.
The specific flow parameters of the booster pump 12, the scavenging pump 10, the accessory gearbox and the oil-gas separator pump 13 meet the following table requirements:
The description of the directions and the relative positional relationships of the structures, such as the description of the front, back, left, right, up and down, in the present utility model does not limit the present utility model, but is merely for convenience of description.
Claims (9)
1. The multistage variable lubricating oil pump of the gas turbine is characterized by comprising a shell (3) used for being connected with the gas turbine, wherein a pressurizing stage assembly used for sucking out lubricating oil from an oil tank and pressurizing the lubricating oil and an oil return stage assembly used for pumping the lubricating oil after flowing through various transmission parts of the gas turbine back to the oil tank are integrated in the shell (3), and the pressurizing stage assembly and the oil return stage assembly are in transmission connection with a gear box of an accessory of the gas turbine through a transmission shaft (4);
The inlet of the booster stage assembly and the outlet of the oil return stage assembly are communicated to the oil tank through pipelines, a booster stage inlet (8) and a booster stage outlet (2) are arranged on the shell (3) corresponding to the booster stage assembly, a plurality of oil return pipelines (1) communicated with the inlet of the oil return stage assembly are further arranged on the shell (3), the booster stage assembly comprises a booster pump (12), the oil return stage assembly comprises a plurality of oil return pumps (10), and the booster pump (12) and the oil return pumps (10) are arc-shaped pantocrocine gear pumps.
2. The multistage variable lubricating oil pump of a gas turbine according to claim 1, characterized in that the circular arc pantotron gear pump comprises an inner rotor (17), a rotor shaft (19), an outer rotor (18) and an eccentric housing (16), wherein the inner rotor (17) is mounted on the rotor shaft (19) and is meshed with the outer rotor (18), the outer rotor (18) is externally provided with the eccentric housing (16), the outer rotor (18) can rotate in the eccentric housing (16), and the inner rotor (17) and the outer rotor (18) are meshed to form an oil suction cavity (15) and an oil discharge cavity (14).
3. The multistage variable lubricating oil pump for a gas turbine according to claim 2, characterized in that the number of teeth of the outer rotor (18) is larger than the number of teeth of the inner rotor (17).
4. A multistage variable lubricating oil pump for a gas turbine according to claim 3, characterized in that a temperature sensor is installed in the return line (1).
5. The multistage variable lubricating oil pump for a gas turbine according to claim 4, characterized in that the booster pump (12) and the scavenging pump (10) are provided with safety valves (7).
6. The multistage variable lubricating oil pump for a gas turbine according to claim 5, characterized in that a filter screen (5) and a supply pressure limiting valve are provided at the inlet of the scavenging pump (10).
7. The multistage variable lubricating oil pump for a gas turbine according to claim 6, characterized in that a magnetic chip detector is arranged below the filter screen (5).
8. The multistage variable lubricating oil pump for a gas turbine according to claim 7, wherein the transmission shaft (4), the rotor shaft (19) and the outer circumferences of both ends of the gear box shaft of the accessory for a gas turbine are all spline-connected.
9. The multistage variable lubricating oil pump for a gas turbine according to any one of claims 1 to 8, characterized in that an oil-gas separator pump (13) is further arranged in the housing (3), and the oil-gas separator pump (13) is connected with an outlet of the oil return pump (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421183147.4U CN222457578U (en) | 2024-05-28 | 2024-05-28 | Gas turbine multi-stage variable oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421183147.4U CN222457578U (en) | 2024-05-28 | 2024-05-28 | Gas turbine multi-stage variable oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222457578U true CN222457578U (en) | 2025-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421183147.4U Active CN222457578U (en) | 2024-05-28 | 2024-05-28 | Gas turbine multi-stage variable oil pump |
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| Country | Link |
|---|---|
| CN (1) | CN222457578U (en) |
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- 2024-05-28 CN CN202421183147.4U patent/CN222457578U/en active Active
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