CN111103079B - A high-speed hydraulic dynamometer - Google Patents
A high-speed hydraulic dynamometer Download PDFInfo
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- CN111103079B CN111103079B CN201911133679.0A CN201911133679A CN111103079B CN 111103079 B CN111103079 B CN 111103079B CN 201911133679 A CN201911133679 A CN 201911133679A CN 111103079 B CN111103079 B CN 111103079B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
- G01L3/242—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity by measuring and simultaneously multiplying torque and velocity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
本发明公开了一种新型的高速水力测功器，包括机座、外壳，外壳上通过螺钉连接有砝码静校装置、测力装置、测速装置，外壳内通过固定螺栓固定有左外壳、右外壳，左外壳、右外壳、外壳内形成腔体，腔体通过进排水弯管与挠性进排水管连接，右外壳、左外壳内部分别通过左右高速轴承固定有主轴，左右外壳内分别设置高速浮动碳环密封和衬套组成密封副，在左右外壳内油水密封环内侧设有封水密封副，本发明高速水力测功器具有高速运行能力，满足航空发动机动力输出直接测试，结构紧凑、主轴刚性满足高速运转抗振能力强，主轴光盘结构作为吸功元件具有抗气蚀能力强大的长寿命特性，多层串联高速密封结构，封油封水性能可靠。
The invention discloses a novel high-speed hydraulic dynamometer, comprising a base and an outer shell. A weight static calibration device, a force measuring device and a speed measuring device are connected to the outer shell by screws. A left outer shell and a right outer shell are fixed in the outer shell by fixing bolts. A cavity is formed in the left outer shell, the right outer shell and the outer shell. The cavity is connected with a flexible inlet and outlet pipe through an inlet and outlet elbow pipe. A main shaft is fixed in the right outer shell and the left outer shell through left and right high-speed bearings respectively. A high-speed floating carbon ring seal and a bushing are respectively arranged in the left and right outer shells to form a sealing pair. A water sealing pair is arranged on the inner side of the oil-water sealing ring in the left and right outer shells. The high-speed hydraulic dynamometer of the invention has high-speed operation capability and meets the direct test of aircraft engine power output. The structure is compact, the main shaft rigidity meets the high-speed operation and has strong vibration resistance. The main shaft optical disc structure as a power absorbing element has a long life characteristic with strong cavitation resistance capability. The multi-layer series high-speed sealing structure has reliable oil and water sealing performance.
Description
Technical Field
The invention relates to the field of aeroengine testing, in particular to a high-speed hydraulic dynamometer.
Background
With the autonomous research and development of the domestic aero-engine, various tests such as product performance development, calibration, matching, simulation, reliability and the like are required to be carried out, and the dynamic performance test of the aero-engine is carried out on a test bed through a dynamic loading device. Because the hydraulic dynamometer has the advantages of lower unit cost, compact size, small inertia, quick transient response, large absorption load and high-power operation, the hydraulic dynamometer is always an important device for measuring and diagnosing the power performance of an engine, but the traditional hydraulic dynamometer is limited by factors such as high-speed cavitation, high-speed centrifugal force, high-speed bearing matching, bearing lubrication, sealing and the like, cannot meet the testing requirement of a gas turbine engine for aviation industry, and lacks a high-speed hydraulic dynamometer which does not need a complex transmission chain or a reduction gearbox and directly acts on the power output of the aviation engine.
Disclosure of Invention
The invention aims to provide a high-speed hydraulic dynamometer.
The technical scheme adopted by the invention is as follows:
A high-speed hydraulic dynamometer is characterized in that: the device comprises a machine base and a shell, a weight static correction device, a force measuring device and a speed measuring device are connected to the shell through screws, the shell is connected with a water inlet actuator and a water outlet actuator through a flexible water inlet and outlet pipe, a left shell and a right shell are fixed in the shell through fixing bolts, cavities are formed in the left shell, the right shell and the shell, the cavities are connected with the flexible water inlet and outlet pipe through water inlet and outlet pipes through water inlet and outlet elbows, a main shaft is fixed in the right shell and the left shell through left and right high-speed bearings respectively, oil slingers are respectively arranged on the inner sides of the main shaft, bushings are respectively arranged on the inner sides of the left and right oil slingers, a sealing pair is arranged on the inner sides of the oil-water sealing rings in the left and right shells respectively, a sleeve for sealing the left and right high-speed bearings on the main shaft is respectively arranged on the outer sides of the left and right high-speed bearings, a splicing cap is arranged on the outer sides of the sleeve, a swinging bearing is arranged between the end of the left shell and the right shell and the machine base, the main shaft extends out of the end cover to form a shaft coupling, a water inlet disc and a guide ring are arranged in the shell, a plurality of conical discs are arranged on the main shaft, and the guide ring are respectively arranged on the main shaft, and the sealing ring respectively pass through the tapered discs and the guide ring and pass through the main shaft and pass through the sleeve and are fixed in the disc.
The water inlet disc and the guide ring are fixed in a cavity formed by a left shell, a right shell and a shell which are connected by bolts.
The high-speed floating carbon ring seal consists of a seat and a shaft sleeve, wherein the seat is provided with an oil spraying hole and a sealing vent hole, the shaft sleeve is provided with a labyrinth ring, and the oil spraying hole is connected with an external oil supply system through an oil duct on the shell.
The force measuring device measures the torque of the dynamometer, the rotating speed of the main shaft is measured through the speed measuring device, and the product of the rotating speed and the torque can be used for calculating the power.
The water sealing pair is fixedly arranged in the shell, and is provided with a vent hole and a labyrinth sealing ring, so that water in the dynamometer is prevented from leaking to the bearing side.
The oil slinger is arranged on the main shaft and rotates along with the main shaft at a high speed, and is designed into a conical surface to prevent lubricating oil from flowing to the water cavity of the dynamometer.
The oil-water sealing ring is arranged in the shell, and an air film sealing belt formed between the oil-water sealing ring and the lining isolates oil water.
The high-speed hydraulic dynamometer has the advantages that the high-speed hydraulic dynamometer has high-speed operation capability, meets the direct test of power output of an aeroengine, is necessary equipment for testing truly reflecting the technical performance of the engine, has compact structure, has high rigidity of a main shaft, high vibration resistance and long service life, has high cavitation resistance as a power absorption element, meets the requirement of a durable test, has a multi-layer serial high-speed sealing structure, has reliable sealing oil sealing performance, ensures no pollution in reliable and stable operation test environment, is different from the traditional pit-type hydraulic dynamometer, does not need frequent replacement of a power element, and has high economical efficiency.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a side view of the present invention.
The device comprises a weight static correction device 1, a machine seat 2, a water inlet actuator 3, a water inlet actuator 4, a shell 5, a main shaft 6, a water outlet actuator 7, a force measuring device 8, a coupler 9, a swinging bearing 10, a split nut 11, a high-speed floating carbon ring seal 12, a high-speed bearing 13, a water inlet disc 14, a guide ring 15, a water sealing pair 16, an end cover 17, an oil slinger 18, an oil-water sealing ring 19, a bushing 20, a right shell 21, a flexible water inlet and outlet pipe 22, a water inlet and outlet elbow 23, a left shell 24, a fixing bolt 25, a bolt 26, a speed measuring device 27 and a conical optical disc.
Detailed Description
As shown in figures 1-2, the high-speed hydraulic dynamometer comprises a machine base 2 and a shell 4, wherein a weight static correction device 1, a force measuring device 7 and a speed measuring device 26 are connected to the shell 4 through screws, the shell 4 is connected with a water inlet actuator 3 and a water outlet actuator 6 through a flexible water inlet and outlet pipe 21, a left shell 23 and a right shell 20 are fixed in the shell 4 through fixing bolts 24, cavities are formed in the left shell 23, the right shell 20 and the shell 4, the cavities are connected with the flexible water inlet and outlet pipe 21 through water inlet and outlet pipes 22, a main shaft 5 is fixed in the right shell 20 and the left shell 23 through a left high-speed bearing 12 and a right high-speed bearing 12 respectively, oil slingers 17 are arranged on the inner sides of the left high-speed bearing 12 and the right high-speed bearing 12 on the main shaft 5 respectively, bushings 19 are arranged on the inner sides of the left and right oil slingers 17 respectively, the high-speed floating carbocycle seal 11 and the bushing 19 are respectively arranged in the left shell and the right shell to form a seal pair, the inner side of the oil-water seal ring 18 in the left shell and the right shell is provided with a water seal pair 15, the outer sides of the left high-speed bearing 12 and the right high-speed bearing 12 on the main shaft 5 are respectively provided with a shaft sleeve of the left high-speed floating carbocycle seal 11, the outer sides of the shaft sleeves are provided with a splicing cap 10, a swinging bearing 9 is arranged between the end parts of the left shell 23 and the right shell 20 and the machine base 2, the left shell and the right shell are provided with end covers 16, the main shaft 5 extends out of the end covers 16 to be provided with a coupler 8, the shell is internally provided with a water inlet disc 13 and a guide ring 14, the main shaft 5 is provided with a plurality of conical optical discs 27, the water inlet disc 13 and the guide ring 14 are arranged in a staggered manner, and the guide ring 14 is fixed in the shell 4 through the conical optical discs 27.
The water inlet disk 13 and the guide ring 14 are fixed in a cavity formed by the left shell 23, the right shell 20 and the shell 4 which are connected through bolts.
The high-speed floating carbocycle seal 11 consists of a seat and a shaft sleeve, wherein the seat is provided with an oil injection hole and a sealing vent hole, the shaft sleeve is provided with a labyrinth ring, and the oil injection hole is connected with an external oil supply system through an oil duct on the shell 4.
The dynamometer device 7 measures the torque of the dynamometer, the speed measuring device 26 measures the rotating speed of the main shaft, and the product of the rotating speed and the torque can be used for calculating the power.
The water sealing pair 15 is fixedly arranged in the shell 4, and is provided with a vent hole and a labyrinth sealing ring to prevent water in the dynamometer from leaking to the bearing side.
The oil slinger 17 is mounted on the spindle 5 and rotates at a high speed with the spindle 5, and is designed into a conical surface to prevent lubricating oil from flowing to the water cavity of the dynamometer.
An oil-water sealing ring 18 is installed in the shell 4, and an air film sealing belt formed between the oil-water sealing ring and the bushing 19 isolates oil water.
The high-speed hydraulic dynamometer has high-speed operation capability, meets the direct test of power output of an aeroengine, is necessary equipment for truly reflecting the test of the technical performance of the engine, has compact structure, has high rigidity of a main shaft, has high anti-vibration capability when being used as a power absorption element, has long service life characteristic of high cavitation resistance, meets the requirement of a durable assessment test, has a multi-layer serial high-speed sealing structure, has reliable sealing oil and water performance, ensures no pollution in reliable and stable operation test environment, is different from the traditional pit-type hydraulic dynamometer without frequently replacing a power element, and has high economical efficiency.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133679.0A CN111103079B (en) | 2019-11-19 | 2019-11-19 | A high-speed hydraulic dynamometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133679.0A CN111103079B (en) | 2019-11-19 | 2019-11-19 | A high-speed hydraulic dynamometer |
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| CN111103079A CN111103079A (en) | 2020-05-05 |
| CN111103079B true CN111103079B (en) | 2025-04-04 |
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| CN201911133679.0A Active CN111103079B (en) | 2019-11-19 | 2019-11-19 | A high-speed hydraulic dynamometer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111896157A (en) * | 2020-07-17 | 2020-11-06 | 中国船舶重工集团公司第七O三研究所无锡分部 | A high-power and high-speed hydraulic dynamometer |
| CN116183075A (en) * | 2022-12-30 | 2023-05-30 | 江苏联测机电科技股份有限公司 | Stator-rotor structure of a hydraulic dynamometer |
| CN116124337B (en) * | 2022-12-30 | 2024-10-01 | 江苏联测机电科技股份有限公司 | Multistage serial hydraulic dynamometer |
| CN120141855B (en) * | 2025-05-14 | 2025-07-18 | 南通常测机电设备有限公司 | An energy-saving test bench for high-speed hydraulic dynamometer of aircraft engines |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211121714U (en) * | 2019-11-19 | 2020-07-28 | 江苏联测机电科技股份有限公司 | A new type of high-speed hydraulic dynamometer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB348881A (en) * | 1929-05-17 | 1931-05-21 | British Thomson Houston Co Ltd | Improvements in and relating to dynamometers |
| CN2473606Y (en) * | 2001-05-14 | 2002-01-23 | 启东测功器厂 | Injection flow variable water vortex dynamometer |
| US9752961B2 (en) * | 2014-06-19 | 2017-09-05 | Avl Test Systems, Inc. | Dual-purpose dynamometer |
| CN107356357A (en) * | 2017-09-13 | 2017-11-17 | 中国船舶重工集团公司第七0三研究所 | A kind of through-flow component quick change construction of Novel disc-type hydraulic dynamometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211121714U (en) * | 2019-11-19 | 2020-07-28 | 江苏联测机电科技股份有限公司 | A new type of high-speed hydraulic dynamometer |
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Effective date of registration: 20220303 Address after: 226200 No. 2368-2370, Renmin West Road, Qidong City, Nantong City, Jiangsu Province Applicant after: JIANGSU LIANCE ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Applicant after: AECC HUNAN AVIATION POWERPLANT Research Institute Address before: 226200 No. 2368-2370, Renmin West Road, Qidong City, Nantong City, Jiangsu Province Applicant before: JIANGSU LIANCE ELECTROMECHANICAL TECHNOLOGY CO.,LTD. |
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