CN219452194U - Lubricating system of steam turbine generator unit - Google Patents
Lubricating system of steam turbine generator unit Download PDFInfo
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- CN219452194U CN219452194U CN202320857623.5U CN202320857623U CN219452194U CN 219452194 U CN219452194 U CN 219452194U CN 202320857623 U CN202320857623 U CN 202320857623U CN 219452194 U CN219452194 U CN 219452194U
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Abstract
The utility model discloses a lubricating system of a turbo generator set, wherein an oil outlet of a second oil jet is connected with an oil inlet of a three-way oil inlet valve, an oil outlet A and an oil outlet B of the three-way oil inlet valve are respectively connected with oil inlets of a first oil cooler and a second oil cooler, the oil outlets of the first oil cooler and the second oil cooler are respectively connected with the oil inlet A and the oil inlet B of the three-way oil outlet valve, the oil outlet of the three-way oil outlet valve is connected with an oil conveying pipe, the oil conveying pipe is respectively connected with bearing oil supply ports in a plurality of bearing boxes, an oil return port of each bearing box is connected with an oil return pipeline, and the oil return pipeline is connected with an oil tank; a temperature sensor is arranged in the oil tank. The temperature sensor is used for detecting the temperature of the lubricating oil in the oil tank, the use quantity of the oil cooler is adjusted according to the detected temperature, the lubricating oil is ensured to be in a temperature range with optimal performance, and the damage of the bearing bush caused by the too low temperature of the lubricating oil and the loss and waste of the gasification loss of the lubricating oil caused by the too high temperature of the lubricating oil are avoided.
Description
Technical field:
the utility model relates to the field of turbine unit lubrication, in particular to a turbine generator unit lubrication system.
The background technology is as follows:
the lubricating oil system of the turbo generator set is used for lubricating a support bearing, a thrust bearing and a jigger device of the turbo generator, reducing friction loss of a bearing contact surface and taking away heat generated by friction, scraps and heat transferred from a rotor. In the operation of steam turbine, lubricating oil can be sent into the bearing in each bearing box, simultaneously in order to guarantee that lubricating oil temperature is in the best performance state, can cool down lubricating oil through many oil coolers, but along with turbo generator set's operation, many oil coolers constantly throw into or cut off, when single oil cooler operates, the oil temperature is too high, lead to lubricating oil to be told out at the bearing both ends, form tiny oil mist, cause a large amount of lubricating oil loss, and many oil coolers simultaneously operate, can cause the oil temperature too low again, influence the oil pressure in getting into the bearing, lead to lubrication failure, easily cause the axle bush to damage, seriously influence turbine rotor's rotation, influence normal operating.
The utility model comprises the following steps:
the utility model aims to provide a lubricating system of a steam turbine generator unit.
The utility model is implemented by the following technical scheme:
the lubricating system of the turbo generator set comprises an oil tank, wherein an oil outlet pipe of the oil tank is respectively connected with oil inlets of a first oil jet and a second oil jet, an oil outlet of the first oil jet is connected with oil inlet pipes of a main oil pump, an oil outlet pipe of the main oil pump is connected with the oil outlet pipe of the oil tank, an oil outlet of the second oil jet is connected with an oil inlet of a three-way oil inlet valve, an oil outlet A and an oil outlet B of the three-way oil inlet valve are respectively connected with oil inlets of a first oil cooler and a second oil cooler, oil outlets of the first oil cooler and the second oil cooler are respectively connected with an oil inlet A and an oil inlet B of a three-way oil outlet valve, the oil outlets of the three-way oil outlet valve are respectively connected with bearing oil supply ports in a plurality of bearing boxes, an oil return port of each bearing box is connected with an oil return pipeline, and the oil return pipeline is connected with the oil tank;
the fuel tank is internally provided with a temperature sensor, a signal output end of the temperature sensor is electrically connected with a signal input end of a controller, and a signal output end of the controller is electrically connected with two signal input ends of the three-way fuel inlet valve and the three-way fuel outlet valve respectively.
Preferably, the front end of the oil outlet pipe of the oil tank is connected with a high-pressure starting oil pump.
Preferably, a high-pressure overflow valve is arranged at an oil outlet of the high-pressure starting oil pump.
The utility model has the advantages that: the temperature sensor is used for detecting the temperature of the lubricating oil in the oil tank, the use quantity of the oil cooler is adjusted according to the detected temperature, the lubricating oil is ensured to be in a temperature range with optimal performance, and the damage of the bearing bush caused by the too low temperature of the lubricating oil and the loss and waste of the gasification loss of the lubricating oil caused by the too high temperature of the lubricating oil are avoided.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of a control circuit of the present utility model.
In the figure: the oil tank 1, the first oil injector 2, the second oil injector 3, the main oil pump 4, the first oil cooler 5, the second oil cooler 6, the three-way oil inlet valve 7, the three-way oil discharge valve 8, the bearing box 9, the oil return pipeline 10, the temperature sensor 11, the controller 12, the high-pressure starting oil pump 13 and the high-pressure overflow valve 14.
The specific embodiment is as follows:
as shown in fig. 1 and 2, a lubricating system of a turbo generator set comprises an oil tank 1, wherein an oil outlet pipe of the oil tank 1 is respectively connected with oil inlets of a first oil injector 2 and a second oil injector 3, an oil outlet of the first oil injector 2 is connected with oil inlet pipes of a main oil pump 4, an oil outlet pipe of the main oil pump 4 is connected with an oil outlet pipe of the oil tank 1, an oil outlet of the second oil injector 3 is connected with an oil inlet of a three-way oil inlet valve 7, an oil outlet A and an oil outlet B of the three-way oil inlet valve 7 are respectively connected with oil inlets of a first oil cooler 5 and a second oil cooler 6, oil outlets of the first oil cooler 5 and the second oil cooler 6 are respectively connected with an oil inlet A and an oil inlet B of a three-way oil outlet valve 8, oil outlets of the three-way oil outlet valve 8 are respectively connected with oil delivery pipes, oil delivery pipes are respectively connected with bearing oil supply ports in a plurality of bearing boxes 9, oil return ports of each bearing box 9 are respectively connected with an oil return pipeline 10, and the oil return pipeline 10 is connected with the oil tank 1;
a temperature sensor 11 is arranged in the oil tank 1, a signal output end of the temperature sensor 11 is electrically connected with a signal input end of a controller 12, and a signal output end of the controller 12 is electrically connected with two signal input ends of a three-way oil inlet valve 7 and a three-way oil discharge valve 8 respectively;
when the oil pump is used, the main oil pump 4 rotates along with the main shaft of the steam turbine, after the oil pump is started, the main oil pump 4 pumps lubricating oil in the oil tank 1 to the first oil injector 2 and the second oil injector 3, one path circulates from the main oil pump 4, the other path circulates from the second oil injector 3 to the three-way oil inlet valve 7, the temperature sensor 11 is used for detecting the oil temperature in the oil tank 1, if the oil temperature in the oil tank 1 is lower than 38 ℃, the controller 12 controls the oil outlet A of the three-way oil inlet valve 7 and the oil inlet A of the three-way oil outlet valve 8 to be opened after receiving data of the temperature sensor 11, the oil outlet B of the three-way oil inlet valve 7 and the oil inlet B of the three-way oil outlet valve 8 are closed, at the moment, the cooled lubricating oil is cooled through the first oil cooler 5, the cooled lubricating oil is sent into a bearing of the bearing box 9, and finally returns to the oil tank 1 through the oil return pipeline 10;
if the oil temperature in the oil tank 1 of the temperature sensor 11 is higher than or equal to 38 ℃, after receiving the data of the temperature sensor 11, the controller 12 controls the oil drain port A and the oil drain port B of the three-way oil inlet valve 7 and the oil inlet A and the oil inlet B of the three-way oil drain valve 8 to be opened, and at the moment, the first oil cooler 5 and the second oil cooler 6 cool the lubricating oil together to avoid overhigh temperature of the lubricating oil;
the front end of an oil outlet pipe of the oil tank 1 is connected with a high-pressure starting oil pump 13, the oil outlet of the high-pressure starting oil pump 13 is provided with a high-pressure overflow valve 14, and before the main oil pump 4 is started, the high-pressure starting oil pump 13 is required to pump lubricating oil to the first oil injector 2 and the second oil injector 3 so as to ensure that the main oil pump 4 can normally operate; the high-pressure relief valve 14 can release the lubricating oil, so that the excessive oil pressure of a lubricating oil system pipeline is avoided.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (3)
1. The lubricating system of the turbo generator set is characterized by comprising an oil tank, wherein an oil outlet pipe of the oil tank is respectively connected with oil inlets of a first oil jet and a second oil jet, an oil outlet of the first oil jet is connected with oil inlet pipes of a main oil pump, an oil outlet pipe of the main oil pump is connected with the oil outlet pipe of the oil tank, an oil outlet of the second oil jet is connected with an oil inlet of a three-way oil inlet valve, an oil outlet A and an oil outlet B of the three-way oil inlet valve are respectively connected with oil inlets of a first oil cooler and a second oil cooler, oil outlets of the first oil cooler and the second oil cooler are respectively connected with an oil inlet A and an oil inlet B of a three-way oil outlet valve, oil outlets of the three-way oil outlet valve are respectively connected with oil delivery pipes, oil return ports of each bearing box are respectively connected with an oil return pipeline, and the oil return pipeline is connected with the oil tank;
the fuel tank is internally provided with a temperature sensor, a signal output end of the temperature sensor is electrically connected with a signal input end of a controller, and a signal output end of the controller is electrically connected with two signal input ends of the three-way fuel inlet valve and the three-way fuel outlet valve respectively.
2. The lubricating system of the turbo generator set according to claim 1, wherein a high-pressure start oil pump is connected to the front end of the oil outlet pipe of the oil tank.
3. A turbo-generator set lubrication system according to claim 2, wherein a high-pressure relief valve is installed at the oil outlet of the high-pressure start oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857623.5U CN219452194U (en) | 2023-04-14 | 2023-04-14 | Lubricating system of steam turbine generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857623.5U CN219452194U (en) | 2023-04-14 | 2023-04-14 | Lubricating system of steam turbine generator unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452194U true CN219452194U (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320857623.5U Active CN219452194U (en) | 2023-04-14 | 2023-04-14 | Lubricating system of steam turbine generator unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219452194U (en) |
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2023
- 2023-04-14 CN CN202320857623.5U patent/CN219452194U/en active Active
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