CN110821581A - Hot-end fuel lubricating oil pipeline structure of turbine engine - Google Patents
Hot-end fuel lubricating oil pipeline structure of turbine engine Download PDFInfo
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- CN110821581A CN110821581A CN201911080328.8A CN201911080328A CN110821581A CN 110821581 A CN110821581 A CN 110821581A CN 201911080328 A CN201911080328 A CN 201911080328A CN 110821581 A CN110821581 A CN 110821581A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/10—Heating, e.g. warming-up before starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
- F01D25/125—Cooling of bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the technical field of turbine engines, in particular to a hot-end fuel lubricating oil pipeline structure of a turbine engine, which is used for solving the problems that the heat efficiency of the engine cannot be better improved and a bearing cannot be better cooled in the prior art. The lubricating oil preheating device comprises a lubricating oil return cavity shell, a fuel oil preheating cavity, a fuel oil inlet pipe, a lubricating oil return pipe and a lubricating oil inlet pipe, wherein the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially nested from outside to inside and leave gaps, one end of the fuel oil inlet pipe is sequentially communicated with the fuel oil preheating cavity and the fuel oil supply pipe, one end of the lubricating oil return pipe is communicated with the inside of the lubricating oil return cavity shell, and one end of the lubricating oil inlet pipe is positioned in the inside of the lubricating oil return cavity shell and is opposite to the upper part of a bearing. According to the invention, the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially nested from outside to inside, and the temperatures of fluids in the three pipelines are sequentially reduced from outside to inside, so that the cooling effect on the bearing can be improved and the heat efficiency of the engine can be improved.
Description
Technical Field
The invention relates to the technical field of turbine engines, in particular to a hot-end fuel oil pipeline structure of a turbine engine.
Background
The bearings at the turbine end of the engine need to be cooled and lubricated by the injection of lubricating oil. And lubricating oil gets into the high temperature region that the rear bearing must pass through the engine, on the one hand, when lubricating oil flows through this region, will carry out the heat exchange with the environment and make the lubricating oil temperature who sprays on the bearing rise to reduced the difference in temperature between lubricating oil and the bearing, makeed the cooling effect worsen, bearing operating temperature risees. On the other hand, the temperature of the lubricating oil close to the wall surface of the oil supply pipeline is high, lubricating oil coking is easily generated, coking particles enter the bearing under the flushing of the flowing lubricating oil, and adverse effects are generated on the work of the bearing. Both of these aspects affect the useful life of the bearing, thereby making the engine overhaul intervals shorter.
Therefore, for lubricating the lubricating oil at the rear end of the turbine engine, the temperature of the lubricating oil sprayed to the surface of the bearing is reduced, the temperature difference between the lubricating oil and the surface of the bearing is increased, the cooling effect of the lubricating oil can be improved, the working temperature of the bearing is reduced, and the probability of coking of the lubricating oil on the inner surface of a pipeline can be reduced. Secondly, the fuel enters the oil thrower disc through the fuel supply pipeline to be atomized and then is combusted to release energy, if the temperature of the fuel entering the oil thrower disc can be improved to a certain degree, the heat efficiency of the whole engine can be effectively improved. At present, fuel oil of a turbine engine with a centrifugal oil thrower is generally input from the end of a main shaft and enters the centrifugal oil thrower through an oil supply pipe in the shaft. Therefore, the mutual action of the fuel oil and the lubricating oil is utilized, the fuel oil temperature is improved, the lubricating oil temperature is reduced, and the win-win effect can be achieved.
At present, a common mode is to use a fuel oil heat exchanger outside an engine, but the heating effect of the mode on fuel oil is limited, and meanwhile, cooled lubricating oil can pass through a high-temperature part of the engine in the process of flowing to a rear bearing, and at the moment, lubricating oil can be heated again, so that the problem of coking of a lubricating oil pipeline at the high-temperature part can not be solved while the temperature of the lubricating oil sprayed to the surface of the bearing is increased. Therefore, a hot-end fuel oil pipeline structure of the turbine engine, which can increase the fuel oil temperature and reduce the fuel oil temperature, is urgently needed.
Disclosure of Invention
Based on the problems, the invention provides a hot-end fuel lubricating oil pipeline structure of a turbine engine, which is used for solving the problem that the heat efficiency of the engine cannot be improved because fuel oil cannot be preheated in the prior art; the temperature of the lubricating oil can not be reduced, thereby the problems of lubricating oil coking and better cooling effect on the bearing can not be reduced. According to the invention, the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially nested from outside to inside, the temperature of fluids in the three pipelines is sequentially reduced from outside to inside, and the fuel oil is used as a cooling medium of the lubricating oil return pipeline to reduce the temperature rise of the lubricating oil, so that the injection temperature of the lubricating oil can be reduced, the cooling effect on a bearing is improved, and the probability of coking of the lubricating oil is reduced; meanwhile, the whole bearing is wrapped by the fuel preheating cavity shell, the area of the fuel preheating cavity is large, and when fuel enters the fuel preheating cavity, the fuel can be well preheated, so that the initial temperature of the fuel entering the oil throwing disc can be increased, a better atomizing combustion effect is achieved, and the heat efficiency of an engine is improved.
The invention specifically adopts the following technical scheme for realizing the purpose:
a hot end fuel lubricating oil pipeline structure of a turbine engine comprises a bearing, wherein a bearing seat is mounted on the bearing, a lubricating oil return cavity shell is mounted on the bearing seat, a fuel oil preheating cavity shell is wrapped outside the lubricating oil return cavity shell, and a fuel oil preheating cavity is formed between the fuel oil preheating cavity shell and the lubricating oil return cavity shell; still include from outside to inside in proper order nested and leave gapped fuel oil inlet pipe, lubricating oil back oil pipe and lubricating oil inlet pipe each other, the one end that the fuel oil inlet pipe was advanced communicates with each other with the fuel preheating chamber, the fuel preheating chamber communicates with each other with supplying the oil pipe, the one end that the lubricating oil returned the oil pipe communicates with each other with the inside of lubricating oil back oil chamber casing, the one end that the lubricating oil inlet pipe was located the inside of lubricating oil back oil chamber casing and is relative with the upper portion of bearing.
The working principle is as follows: when the lubricating oil preheating device works, fuel oil enters the outermost fuel oil inlet pipe, then flows into the fuel oil preheating cavity shell, finally enters the oil supply pipe in the engine shaft, lubricating oil enters the innermost lubricating oil inlet pipe, finally the lubricating oil is sprayed onto the bearing to realize the lubricating and cooling functions, and then the lubricating oil flows into the bottom of the lubricating oil return cavity shell under the action of gravity to be gathered and returns to the lubricating oil tank through the lubricating oil return pipe.
According to the invention, the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially nested from outside to inside, fuel oil flows in the outermost fuel oil inlet pipe and absorbs most of conduction and radiation heat at the rear end of an engine, the middle layer pipeline is the lubricating oil return pipe, the innermost layer is the lubricating oil inlet pipe, the temperature of the fuel oil is lowest, the temperatures of fluids in the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially reduced from outside to inside, and the fuel oil is used as a cooling medium of the lubricating oil return pipeline to reduce the temperature rise of the lubricating oil, so that the lubricating oil injection temperature can be reduced, the cooling effect on a bearing is improved, and the probability of coking of the lubricating oil is reduced; meanwhile, the whole bearing is wrapped by the fuel preheating cavity shell, the area of the fuel preheating cavity is large, and when fuel enters the fuel preheating cavity, the fuel can be well preheated, so that the initial temperature of the fuel entering the oil throwing disc can be increased, a better atomizing combustion effect is achieved, and the heat efficiency of an engine is improved.
As a preferred mode, the other ends of the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are connected with the same pipeline adapter, the pipeline adapter is sequentially provided with a fuel oil inlet connector, a lubricating oil outlet connector and a lubricating oil inlet connector, and the fuel oil inlet connector, the lubricating oil outlet connector and the lubricating oil inlet connector are sequentially communicated with the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe.
As a preferred mode, the middle part in the pipeline adapter is provided with a fuel pipe connecting hole, a lubricating oil return pipe connecting hole and a lubricating oil inlet pipe connecting hole from top to bottom in sequence, and the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially arranged in the fuel pipe connecting hole, the lubricating oil return pipe connecting hole and the lubricating oil inlet pipe connecting hole.
As a preferred mode, an upper sealing gasket capable of sealing the end face of the lubricating oil return pipe is arranged in the connecting hole of the lubricating oil return pipe, and an oil outlet communicated with the lubricating oil outlet connector is formed in the lubricating oil return pipe; the lubricating oil inlet pipe is internally provided with a lower sealing gasket capable of sealing the end face of the lubricating oil inlet pipe, the lubricating oil inlet pipe is provided with an oil inlet communicated with the lubricating oil inlet joint, and the outer walls of the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are also provided with a plurality of rubber rings positioned in the pipeline adapter.
As a preferred mode, the side of pipeline adapter has opened last joint hole, well joint hole and lower joint hole from the top down in proper order, fuel oil feed joint, the joint that produces oil of lubricating install in last joint hole, well joint hole and lower joint hole in proper order, it has last oil groove, well oil groove and lower oil groove to open in proper order from the top down in the pipeline adapter, go up oil groove intercommunication fuel oil feed joint and fuel oil inlet pipe, well oil groove intercommunication joint that produces oil of lubricating and the oil return pipe, oil groove intercommunication oil feed joint and the oil return pipe of lubricating down.
As a preferred mode, the lengths of the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe in the pipeline adapter are sequentially increased.
As a preferable mode, a diversion trench is further arranged in the fuel preheating cavity shell.
As a preferred mode, a fuel oil inlet nozzle communicated with the interior of the fuel oil preheating cavity shell is mounted on the lubricating oil return cavity shell, and the fuel oil inlet nozzle is connected with an oil supply pipe.
As a preferable mode, one end of the lubricating oil inlet pipe, which is located in the lubricating oil return cavity housing, is provided with a lubricating oil injection nozzle, and the lubricating oil injection nozzle is opposite to the upper part of the bearing.
The invention has the following beneficial effects:
(1) according to the invention, the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially nested from outside to inside, the temperature of fluids in the three pipelines is sequentially reduced from outside to inside, and the fuel oil is used as a cooling medium of the lubricating oil return pipeline to reduce the temperature rise of the lubricating oil, so that the injection temperature of the lubricating oil can be reduced, the cooling effect on a bearing is improved, and the probability of coking of the lubricating oil is reduced; meanwhile, the whole bearing is wrapped by the fuel preheating cavity shell, the area of the fuel preheating cavity is large, and when fuel enters the fuel preheating cavity, the fuel can be well preheated, so that the initial temperature of the fuel entering the oil throwing disc can be increased, a better atomizing combustion effect is achieved, and the heat efficiency of an engine is improved.
(2) When the engine works, fuel enters the upper oil groove through the fuel inlet joint, enters the outermost fuel inlet pipe through the upper oil groove, flows into the shell of the fuel preheating cavity from the fuel inlet pipe, and finally enters the fuel supply pipe in the engine shaft through the fuel inlet nozzle; the lubricating oil enters the middle oil groove through the lubricating oil inlet connector and enters the innermost lubricating oil inlet pipe from the middle oil groove, the lubricating oil is sprayed to the bearing through the lubricating oil spray nozzle to realize the lubricating and cooling functions, then the lubricating oil flows into the bottom of the lubricating oil return cavity shell under the action of gravity to be gathered, returns to the lower oil groove through the lubricating oil return pipe and enters the lubricating oil outlet connector from the lower oil groove, and finally the lubricating oil flows back to the lubricating oil tank from the lubricating oil outlet connector.
(3) The other ends of the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are connected with the same pipeline adapter, and the lengths of the three oil pipes in the pipeline adapter are sequentially increased. Therefore, aiming at the inlet and outlet structure design of a pipeline system, the main body parts of the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are nested in a limited space range, the inlet and outlet parts are independent respectively, and a shared pipeline adapter is designed at the outer end of the engine, so that the nested fuel oil inlet pipe, the nested lubricating oil return pipe and the nested lubricating oil inlet pipe can realize independent oil inlet and return, and in the engine, the three pipelines can independently complete functions of lubricating oil return, lubricating oil injection, fuel oil input and the like, and the fuel oil preheating is realized and the bearing thermal environment is improved.
(4) In the invention, the shell of the fuel oil preheating cavity is also provided with the guide groove, the lubricating oil flowing from the lubricating oil inlet pipe can flow into the fuel oil inlet nozzle more easily along with the guide groove, and the guide groove is preferably a spiral guide groove.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of the front side of the fuel inlet pipe, the lubricating oil return pipe, and the connection of the lubricating oil inlet pipe with the lubricating oil return chamber housing and the fuel preheating chamber housing in accordance with the present invention;
FIG. 3 is a schematic diagram of a schematic cross-sectional front view of a fuel inlet pipe, a lubricant return pipe, and a lubricant inlet pipe connected to a pipe adapter according to the present invention;
FIG. 4 is a schematic diagram of a cross-sectional front view of a fuel inlet joint, a lubricating oil outlet joint, and a lubricating oil inlet joint in connection with a pipeline adapter according to the present invention;
FIG. 5 is a schematic front sectional view of the pipe adapter of the present invention;
reference numerals: the lubricating oil preheating device comprises a lubricating oil return cavity shell 1, a bearing seat 2, a lubricating oil nozzle 3, a fuel oil inlet nozzle 4, a fuel oil preheating cavity shell 5, a fuel oil preheating cavity 51, a diversion trench 52, a bearing 6, a fuel oil inlet pipe 7, a lubricating oil return pipe 8, an oil outlet 81, a lubricating oil inlet pipe 9, an oil inlet 91, a pipeline adapter 10, a lower joint hole 101, an lower oil groove 102, a joint hole 103, an oil groove 104, an upper joint hole 105, an upper oil groove 106, a fuel oil pipe connecting hole 107, a lubricating oil return pipe connecting hole 108, a lubricating oil inlet pipe connecting hole 109, a lubricating oil inlet joint 11, a lubricating oil outlet joint 12, a fuel oil inlet joint 13, a lower sealing gasket 14, an upper sealing gasket 15, a rubber ring 16 and a 17.
Detailed Description
For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.
Example 1:
as shown in fig. 1-5, a hot end fuel lubricating oil pipeline structure of a turbine engine comprises a bearing 6, wherein a bearing seat 2 is installed on the bearing 6, a lubricating oil return cavity shell 1 is installed on the bearing seat 2, a fuel oil preheating cavity shell 5 is wrapped outside the lubricating oil return cavity shell 1, and a fuel oil preheating cavity 51 is formed between the fuel oil preheating cavity shell 5 and the lubricating oil return cavity shell 1; the lubricating oil preheating device is characterized by further comprising a fuel oil inlet pipe 7, a lubricating oil return pipe 8 and a lubricating oil inlet pipe 9 which are sequentially nested from outside to inside and have gaps, wherein one end of the fuel oil inlet pipe 7 is communicated with a fuel oil preheating cavity 51, the fuel oil preheating cavity 51 is communicated with an oil supply pipe 17, one end of the lubricating oil return pipe 8 is communicated with the inside of the lubricating oil return cavity shell 1, and one end of the lubricating oil inlet pipe 9 is located in the lubricating oil return cavity shell 1 and is opposite to the upper portion of the bearing 6.
The working principle is as follows: when the lubricating oil spraying device works, fuel oil enters the fuel oil inlet pipe 7 at the outermost layer, then flows into the fuel oil preheating cavity shell 5, finally enters the oil supply pipe 17 in the engine shaft, lubricating oil enters the lubricating oil inlet pipe 9 at the innermost layer, finally the lubricating oil is sprayed onto the bearing 6 to realize the lubricating and cooling functions, and then the lubricating oil flows into the bottom of the lubricating oil return cavity shell 1 under the action of gravity to be gathered and returns to a lubricating oil tank through the lubricating oil return pipe 8.
According to the invention, a fuel oil inlet pipe 7, a lubricating oil return pipe 8 and a lubricating oil inlet pipe 9 are sequentially nested from outside to inside, fuel oil flows in the outermost fuel oil inlet pipe 7 and absorbs most of conduction and radiation heat at the rear end of an engine, a middle layer pipeline is the lubricating oil return pipe 8, the innermost layer is the lubricating oil inlet pipe 9, the temperature of the fuel oil is lowest, the temperatures of fluids in the fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9 are sequentially reduced from outside to inside, and the fuel oil is used as a cooling medium for a path of the lubricating oil return pipe 8 to reduce the temperature rise of the lubricating oil, so that the lubricating oil injection temperature can be reduced, the cooling effect on a bearing 6 is improved, and the probability of lubricating oil coking is reduced; meanwhile, the whole bearing 6 is wrapped by the fuel preheating cavity shell 5, the area of the fuel preheating cavity 51 is large, and when fuel enters the fuel preheating cavity 51, the fuel can be well preheated, so that the initial temperature of the fuel entering the oil throwing disc can be increased, a better atomization combustion effect is achieved, and the heat efficiency of an engine is improved.
Example 2:
as shown in fig. 1 to 5, in addition to the above embodiments, this embodiment provides a preferable mechanism for connecting the other ends of the fuel inlet pipe, the oil return pipe and the oil inlet pipe. Namely, the other ends of the fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9 are connected with the same pipeline adapter 10, the pipeline adapter 10 is sequentially provided with a fuel oil inlet connector 13, a lubricating oil outlet connector 12 and a lubricating oil inlet connector 11, and the fuel oil inlet connector 13, the lubricating oil outlet connector 12 and the lubricating oil inlet connector 11 are sequentially communicated with the fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9.
Preferably, the middle part in the pipeline adapter 10 is provided with a fuel pipe connecting hole 107, a lubricating oil return pipe connecting hole 108 and a lubricating oil inlet pipe connecting hole 109 from top to bottom in sequence, and the fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9 are arranged in the fuel pipe connecting hole 107, the lubricating oil return pipe connecting hole 108 and the lubricating oil inlet pipe connecting hole 109 in sequence.
Preferably, an upper sealing gasket 15 capable of sealing the end face of the lubricating oil return pipe 8 is installed in the lubricating oil return pipe connecting hole 108, and an oil outlet 81 communicated with the lubricating oil outlet connector 12 is formed in the lubricating oil return pipe 8; a lower sealing gasket 14 which can seal the end face of the lubricating oil inlet pipe 9 is arranged in the connecting hole of the lubricating oil inlet pipe 9, an oil inlet 91 which is communicated with the lubricating oil inlet joint 11 is arranged on the lubricating oil inlet pipe 9, and a plurality of rubber rings 16 which are positioned in the pipeline adapter 10 are also arranged on the outer walls of the fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9. The rubber ring 16, the upper sealing gasket 15 and the lower sealing gasket 14 can ensure the mutual independence of oil inlet and outlet of the fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9 in the pipeline adapter 10.
Preferably, the side surface of the pipeline adapter 10 is provided with an upper joint hole 105, a middle joint hole 103 and a lower joint hole 101 in sequence from top to bottom, the fuel oil inlet joint 13, the lubricating oil outlet joint 12 and the lubricating oil inlet joint 11 are sequentially installed in the upper joint hole 105, the middle joint hole 103 and the lower joint hole 101, the pipeline adapter 10 is provided with an upper oil groove 106, an intermediate oil groove 104 and a lower oil groove 102 in sequence from top to bottom, the upper oil groove 106 is communicated with the fuel oil inlet joint 13 and the fuel oil inlet pipe 7, the intermediate oil groove 104 is communicated with the lubricating oil outlet joint 12 and the lubricating oil return pipe 8, and the lower oil groove 102 is communicated with the lubricating oil inlet joint 11 and the lubricating oil inlet pipe 9.
Preferably, the lubricating oil return cavity shell 1 is provided with a fuel oil inlet nozzle 4 communicated with the interior of the fuel oil preheating cavity shell 5, and the fuel oil inlet nozzle 4 is connected with an oil supply pipe 17.
Preferably, a lubricating oil nozzle 3 is installed at one end of the lubricating oil inlet pipe 9, which is located in the lubricating oil return cavity housing 1, and the lubricating oil nozzle 3 is opposite to the upper portion of the bearing 6.
In this embodiment: during operation, fuel enters the upper oil groove 106 through the fuel inlet joint 13, enters the outermost fuel inlet pipe 7 through the upper oil groove 106, flows into the fuel preheating cavity shell 5 from the fuel inlet pipe 7, and finally enters the oil supply pipe 17 in the engine shaft through the fuel inlet nozzle 4; the lubricating oil enters the middle oil groove 104 through the lubricating oil inlet joint 11, enters the innermost lubricating oil inlet pipe 9 from the middle oil groove 104, is sprayed to the bearing 6 through the lubricating oil spray nozzle 3 to realize the lubricating and cooling functions, then flows into the bottom of the lubricating oil return cavity shell 1 under the action of gravity to be gathered, returns to the lower oil groove 102 through the lubricating oil return pipe 8, enters the lubricating oil outlet joint 12 from the lower oil groove 102, and finally flows back to the lubricating oil tank from the lubricating oil outlet joint 12.
Preferably, the lengths of the fuel inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9 in the pipeline adapter 10 are sequentially increased. Therefore, aiming at the inlet and outlet structure design of a pipeline system, the main body parts of the fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9 are nested in a limited space range, the inlet and outlet parts are independent respectively, the outer end of the engine is provided with a shared pipeline adapter 10, so that the nested fuel oil inlet pipe 7, the lubricating oil return pipe 8 and the lubricating oil inlet pipe 9 can realize independent oil inlet and return, and in the engine, the three pipelines can independently complete functions of lubricating oil return, lubricating oil injection, fuel oil input and the like, and the fuel oil preheating is realized to the maximum extent and the effect of improving the thermal environment of the bearing 6 is realized.
Preferably, a guide groove 52 is further provided in the fuel preheating chamber housing 5, the oil flowing from the oil inlet pipe 9 flows into the fuel inlet nozzle 4 more easily along the guide groove 52, and the guide groove 52 is preferably a spiral guide groove 52.
The rest is the same as example 1, and therefore, will not be described herein.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the verification process of the invention and are not intended to limit the scope of the invention, which is defined by the claims, and all equivalent structural changes made by using the contents of the specification and the drawings of the present invention should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a turbine engine hot junction fuel oil pipeline structure, includes bearing (6), install bearing frame (2) on bearing (6), its characterized in that: a lubricating oil return cavity shell (1) is mounted on the bearing seat (2), a fuel oil preheating cavity shell (5) is wrapped outside the lubricating oil return cavity shell (1), and a fuel oil preheating cavity (51) is formed between the fuel oil preheating cavity shell (5) and the lubricating oil return cavity shell (1); still include from outer to interior nested in proper order and leave gapped fuel each other and advance oil pipe (7), lubricating oil return oil pipe (8) and lubricating oil and advance oil pipe (9), the one end that the fuel entered oil pipe (7) communicates with each other with fuel preheating chamber (51), fuel preheating chamber (51) communicates with each other with supply oil pipe (17), the one end of lubricating oil return oil pipe (8) communicates with each other with the inside of lubricating oil return oil chamber casing (1), the one end that the lubricating oil advances oil pipe (9) is located the inside of lubricating oil return oil chamber casing (1) and is relative with the upper portion of bearing (6).
2. The hot-end fuel oil pipeline structure of the turbine engine as claimed in claim 1, wherein: the oil feeding device is characterized in that the other ends of the fuel oil feeding pipe (7), the lubricating oil returning pipe (8) and the lubricating oil feeding pipe (9) are connected with the same pipeline adapter (10), a fuel oil feeding joint (13), a lubricating oil discharging joint (12) and a lubricating oil feeding joint (11) are sequentially installed on the pipeline adapter (10), and the fuel oil feeding joint (13), the lubricating oil discharging joint (12) and the lubricating oil feeding joint (11) are sequentially communicated with the fuel oil feeding pipe (7), the lubricating oil returning pipe (8) and the lubricating oil feeding pipe (9).
3. The hot-end fuel oil pipeline structure of the turbine engine as claimed in claim 2, wherein: the utility model discloses a pipeline adapter (10) is characterized in that middle part from the top down in the pipeline adapter (10) has opened in proper order and has fired oil pipe connecting hole (107), lubricating oil time return pipe connecting hole (108) and lubricating oil advance oil pipe connecting hole (109), fuel advances oil pipe (7), lubricating oil time return pipe (8) and lubricating oil and advances oil pipe (9) and install in proper order in fired oil pipe connecting hole (107), lubricating oil time return pipe connecting hole (108) and lubricating oil advance oil pipe connecting hole (109).
4. The hot-end fuel oil pipeline structure of the turbine engine as claimed in claim 3, wherein: an upper sealing gasket (15) capable of sealing the end face of the lubricating oil return pipe (8) is installed in the lubricating oil return pipe connecting hole (108), and an oil outlet (81) communicated with the lubricating oil outlet connector (12) is formed in the lubricating oil return pipe (8); install lower seal gasket (14) that can seal lubricating oil and advance oil pipe (9) terminal surface in lubricating oil advances oil pipe connecting hole (109), lubricating oil advances oil pipe (9) and goes up to open and have and communicate with each other oil inlet (91) with lubricating oil feed joint (11), still install a plurality of rubber rings (16) that are located pipeline adapter (10) on the outer wall that fuel advances oil pipe (7), lubricating oil returns oil pipe (8) and lubricating oil and advances oil pipe (9).
5. The hot-end fuel oil pipeline structure of the turbine engine as claimed in claim 4, wherein: the side from the top down of pipeline adapter (10) has opened last joint hole (105), well joint hole (103) and lower joint hole (101) in proper order, fuel oil feed joint (13), lubricating oil joint (12), lubricating oil feed joint (11) are installed in last joint hole (105), well joint hole (103) and lower joint hole (101) in proper order, from the top down has opened oil groove (106), well oil groove (104) and oil groove (102) down in proper order in pipeline adapter (10), go up oil groove (106) intercommunication fuel oil feed joint (13) and fuel oil inlet pipe (7), well oil groove (104) intercommunication lubricating oil joint (12) and lubricating oil return oil pipe (8), oil groove (102) intercommunication lubricating oil feed joint (11) and lubricating oil inlet pipe (9) down.
6. The hot-end fuel line structure for a turbine engine according to any one of claims 2 to 5, wherein: the lengths of the fuel oil inlet pipe (7), the lubricating oil return pipe (8) and the lubricating oil inlet pipe (9) in the pipeline adapter (10) are sequentially increased.
7. The hot-end fuel line structure for a turbine engine according to any one of claims 1 to 5, wherein: and a diversion trench (52) is also arranged in the fuel preheating cavity shell (5).
8. The hot-end fuel line structure for a turbine engine according to any one of claims 1 to 5, wherein: the lubricating oil return cavity shell (1) is provided with a fuel oil inlet nozzle (4) communicated with the inside of the fuel oil preheating cavity shell (5), and the fuel oil inlet nozzle (4) is connected with an oil supply pipe (17).
9. The hot-end fuel oil pipeline structure of the turbine engine as claimed in claim 1, wherein: and a lubricating oil nozzle (3) is arranged at one end of the lubricating oil inlet pipe (9) positioned in the lubricating oil return cavity shell (1), and the lubricating oil nozzle (3) is opposite to the upper part of the bearing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911080328.8A CN110821581B (en) | 2019-11-06 | 2019-11-06 | Hot-end fuel lubricating oil pipeline structure of turbine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113236428A (en) * | 2021-07-09 | 2021-08-10 | 清航空天(北京)科技有限公司 | Turbojet engine |
| WO2023128016A1 (en) * | 2021-12-29 | 2023-07-06 | 주식회사 쉐카이나 | Oil-flushing apparatus for electro-hydraulic control actuator |
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| WO2023128016A1 (en) * | 2021-12-29 | 2023-07-06 | 주식회사 쉐카이나 | Oil-flushing apparatus for electro-hydraulic control actuator |
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| CN110821581B (en) | 2022-02-22 |
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