CN114046354A - Heat insulation cabin transmission shaft sealing device - Google Patents
Heat insulation cabin transmission shaft sealing device Download PDFInfo
- Publication number
- CN114046354A CN114046354A CN202111445068.7A CN202111445068A CN114046354A CN 114046354 A CN114046354 A CN 114046354A CN 202111445068 A CN202111445068 A CN 202111445068A CN 114046354 A CN114046354 A CN 114046354A
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- China
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- sealing
- transmission shaft
- heat insulation
- sealing ring
- pressing plate
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- 238000007789 sealing Methods 0.000 title claims abstract description 134
- 230000005540 biological transmission Effects 0.000 title claims abstract description 51
- 238000009413 insulation Methods 0.000 title claims abstract description 49
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 35
- 239000004945 silicone rubber Substances 0.000 claims abstract description 17
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000013022 venting Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 42
- 238000009434 installation Methods 0.000 abstract description 17
- 230000001133 acceleration Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/181—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings for plastic packings
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a sealing device for a transmission shaft of a heat insulation cabin, wherein the sealing device 1 is symmetrically arranged along a transmission shaft 4; the sealing device 1 includes: the sealing conical section 12, the silicon rubber sealing gasket and the pressing plate; the silicone rubber gasket comprises a first silicone rubber gasket 11 and a second silicone rubber gasket 13; the pressing plates comprise an outer pressing plate 14 and an inner pressing plate 15; the sealed conical section 12 is connected with the installation surface of the heat insulation cabin 3; the second silicon rubber sealing gasket 13 is fixed with the sealing conical section 12 and the mounting surface of the heat insulation cabin 3 through an outer pressing plate 14 and an inner pressing plate 15 respectively. The sealing device for the transmission shaft of the heat insulation cabin, provided by the invention, can seal different pressure environments at two ends of the transmission shaft, and simultaneously ensures that the transmission shaft can flexibly rotate at a high speed in the sealing device, so that the tests of a starting rule, high-low temperature starting, acceleration and the like of a turboshaft engine are met.
Description
Technical Field
The invention belongs to the technical field of sealing devices, and particularly relates to a sealing device for a transmission shaft of a heat insulation cabin.
Background
When the turboshaft engine is used for starting rule, high-low temperature starting, accelerating and other tests, the engine is placed in an environment test cabin, the power of an output shaft of the engine is absorbed and measured through a hydraulic dynamometer, the flywheel is used for simulating the rotating speed polar inertia moment of the output shaft of the engine to be simulation, and the hydraulic dynamometer and the flywheel are collectively called a power absorption measurement system.
When the engine is started regularly, the inlet temperature, the pressure and the exhaust pressure of the engine need to be simulated in an environment test chamber, if the plateau is started for 5.5km, the temperature in the environment test chamber is-20.75 ℃, the pressure is 50.5kPa (A) and is a negative pressure environment, the problems of freezing of a water inlet and return pipeline of a dynamometer, unreliable measurement accuracy of a tension sensor and the like exist in the low-temperature negative pressure environment, meanwhile, the hydraulic dynamometer and a flywheel run at high speed, a bearing is cooled by using lubricating oil, and shaft end lubricating oil easily leaks into the test chamber in the negative pressure environment and the like. A test bed with a certain starting rule uses a set of heat insulation cabin device to place a dynamometer and a flywheel in a heat insulation cabin, and the heat insulation cabin is communicated with the atmosphere outside an environment test cabin and is in a normal-temperature and normal-pressure environment. During testing, the turboshaft engine is placed in an environmental test chamber, the dynamometer and the flywheel are placed in a heat insulation chamber in the environmental test chamber, and the power of an output shaft of the engine is transmitted to the dynamometer or the flywheel through the transmission shaft, so that the transmission shaft needs to penetrate through the heat insulation chamber to be connected with the dynamometer or the flywheel.
A certain test bed of a high-altitude simulation test base in China places a hydraulic dynamometer and a turboshaft engine in an environment test chamber, the hydraulic dynamometer is not coated by a separate heat insulation chamber, the outside of the hydraulic dynamometer is in a negative-pressure normal-temperature environment, and cooling lubricating oil of the dynamometer and a flywheel easily leaks from the shaft end to the side of the environment test chamber. Meanwhile, the test projects such as high-low temperature starting, plateau starting and the like require that the engine is placed in a high-low temperature environment, and the dynamometer cannot normally and continuously work under the extreme atmospheric condition, so that the test bed cannot normally carry out the high-low temperature environment test projects.
Therefore, it is urgently needed to design a heat insulation cabin transmission shaft sealing device, so that the heat insulation cabin transmission shaft sealing device can seal different pressure environments at two ends of a transmission shaft, and meanwhile, the transmission shaft can flexibly rotate at a high speed in the sealing device, so that the requirements of tests such as a starting rule, high-low temperature starting and acceleration of a turboshaft engine are met.
Disclosure of Invention
In order to solve the problems, the invention provides a sealing device for a transmission shaft of an insulation cabin,
the sealing devices 1 are symmetrically arranged along the transmission shaft 4;
the sealing device 1 comprises: the sealing conical section 12, the silicon rubber sealing gasket and the pressing plate;
the silicone rubber gasket comprises a first silicone rubber gasket 11 and a second silicone rubber gasket 13;
the pressing plates comprise an outer pressing plate 14 and an inner pressing plate 15;
the sealing conical section 12 is connected with the mounting surface of the heat insulation cabin 3;
the second silicon rubber sealing gasket 13 is fixed with the sealing conical section 12 and the mounting surface of the heat insulation cabin 3 through an outer pressing plate 14 and an inner pressing plate 15 respectively.
Further, the first silicone rubber sealing gasket 11 is fixed with the end face of the dynamometer or the flywheel 2 through a bolt 18;
one end of the sealing conical section 12 and the end face of the dynamometer or the flywheel 2 are sealed through a first silicon rubber sealing gasket 11, and the other end of the sealing conical section and the mounting surface of the heat insulation cabin 3 are in the same vertical plane.
Further, the connection between the sealing conical section 12 and the installation surface of the heat insulation cabin 3 adopts a flexible connection mode of a second silicon rubber sealing gasket 13.
Further, the air conditioner is provided with a fan,
the sealing device 1 further comprises: a sealing ring 16 and a vent fitting 17;
the sealing ring 16 is arranged at the transmission shaft 4;
the sealing ring 16 and the inner pressure plate 15 are fixed through bolts 18.
Further, a threaded interface is radially arranged at the position of the sealing ring 16, and the vent joint 17 is in threaded connection with the sealing ring 16;
the air connector 17 comprises a 360 ° rotary pneumatic quick connector.
Further, the air conditioner is provided with a fan,
when the sealing ring 16 and the inner pressure plate 15 are fixed through the bolts 18, the spring washer 19 and the flat washer 110 are fixed through the bolts 18; the spring washer 19 is disposed in close contact with the bolt 18, and the flat washer 110 is disposed above the spring washer 19.
Further, the air conditioner is provided with a fan,
the sealing ring 16 and the inner pressure plate 15 are designed with a certain gap, and the gap between the sealing ring 16 and the transmission shaft 4 can be adjusted by adjusting the relative position between the sealing ring 16 and the inner pressure plate 15.
Further, the inner diameter of the sealing ring 16 is in clearance fit with the transmission shaft 4, and an annular groove 162 is axially designed on the inner diameter of the sealing ring 16 along the transmission shaft 4.
Further, the number of the annular grooves 162 is 3 to 4, and the pressure difference between the two ends of the transmission shaft 4 is gradually reduced after passing through the annular grooves 162.
Further, the inner diameter of the sealing ring 16 is designed with a vent hole 161 at the annular groove 162, and compressed air can enter the annular groove 162 through the vent hole 161.
The invention has the following beneficial effects:
(1) the sealing device for the transmission shaft is provided, different environments at two ends of the transmission shaft are isolated, the work of the dynamometer and the flywheel in a normal-temperature and normal-pressure environment is guaranteed, and the turboshaft engine can be used for performing tests such as a starting rule test, high-low-temperature starting, acceleration and the like in an environment test chamber;
(2) the flexible connection mode of silicon rubber is adopted between the conical sealing section and the heat insulation cabin, so that manufacturing and installation errors and thermal expansion compensation between the conical sealing section and the heat insulation cabin can be effectively compensated;
(3) an adjusting gap is designed between the sealing ring and the inner pressure plate, and the gap between the sealing ring and the transmission shaft is adjusted to be uniform by adjusting the relative position between the sealing ring and the inner pressure plate;
(4) the labyrinth sealing ring is designed in the sealing device and used for being matched with a transmission shaft, 3-4 annular grooves are axially designed in the inner diameter, dry compressed air of a vehicle platform can be tightly sealed through small ventilation holes, when a turboshaft engine starting rule test is carried out, the pressure in an environment test chamber is different under different heights, and the pressure of the sealing gas is adjusted according to the corresponding pressure under different heights, so that the optimal sealing effect is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating an arrangement of test equipment in an environmental test chamber during a starting law test of a turboshaft engine according to an embodiment of the invention;
FIG. 2 shows a schematic view of an insulated cabin propeller shaft seal according to an embodiment of the present invention;
figure 3 shows a schematic diagram of a seal ring structure according to an embodiment of the invention.
Reference numerals: 1-sealing device; 2-a dynamometer or a flywheel; 3-a heat insulation cabin; 4, a transmission shaft; 11-a first silicone rubber gasket; 12-sealing the conical section; 13-a second silicone rubber gasket; 14-outer press plate; 15-inner pressing plate; 16-a sealing ring; 17-a vent connection; 18-bolt; 19-a spring washer; 110-flat washer; 161-vent hole; 162-annular groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a heat insulation cabin transmission shaft sealing device suitable for tests such as high-low temperature starting, plateau starting and the like of a turboshaft engine, and aims to solve the problem that a dynamometer and a flywheel cannot work normally in the environmental test of the conventional turboshaft engine.
As shown in fig. 1, fig. 1 is a schematic diagram illustrating an arrangement of test equipment in an environmental test chamber during a starting law test of a turboshaft engine according to an embodiment of the present invention. When the turboshaft engine is started at high and low temperature, started at plateau and the like, the engine is placed in an environment test cabin, the dynamometer and the flywheel 2 are wrapped by the heat insulation cabin 3 in order to isolate the low-temperature and negative-pressure environment in the environment test cabin, and the heat insulation cabin 3 is in a normal-temperature and normal-pressure environment. The output shaft power of the turboshaft engine is transmitted to the flywheel or the dynamometer 2 through the transmission shaft 4, one end of the transmission shaft 4 is connected with the turboshaft engine, the other end of the transmission shaft needs to penetrate through the heat insulation cabin 3 and the dynamometer or the flywheel 2, the heat insulation cabin 3 is generally provided with an installation surface at a position close to the engine, therefore, a set of sealing device 1 needs to penetrate through the transmission shaft 4, the sealing device 1 needs to be sealed with the input end of the dynamometer or the flywheel 2 and the installation surface of the heat insulation cabin 3, and meanwhile, the transmission shaft 4 needs to be guaranteed to be capable of flexibly rotating in the sealing device 1 at a high speed.
Specifically, the sealing device 1 is shown in fig. 2, and fig. 2 shows a schematic view of a transmission shaft sealing device of an insulation cabin according to an embodiment of the invention. Sealing device 1 sets up along 4 symmetries of transmission shaft, and sealing device 1 includes: a sealing conical section 12, a silicone rubber seal, a pressure plate, a sealing ring 16, a vent fitting 17, a bolt 18, a spring washer 19, and a flat washer 110. Wherein, the silicone rubber sealing gasket comprises a first silicone rubber sealing gasket 11 and a second silicone rubber sealing gasket 13; the pressing plates comprise an outer pressing plate 14 and an inner pressing plate 15.
The sealing conical section 12 is connected with the installation surface of the heat insulation cabin 3, specifically, one end of the sealing conical section 12 is sealed with the end surface of the dynamometer or the flywheel 2 through a first silicon rubber sealing gasket 11, the length of the sealing conical section 12 is designed according to the installation surface of the heat insulation cabin 3, and the sealing conical section 12 and the installation surface of the heat insulation cabin 3 are in the same vertical plane after being installed. The first silicone rubber sealing gasket 11 is fixed with the end face of the dynamometer or the flywheel 2 through a bolt 18. The second silicon rubber sealing gasket 13 is fixed with the sealing conical section 12 and the mounting surface of the heat insulation cabin 3 through an outer pressing plate 14 and an inner pressing plate 15 respectively.
For convenient installation, the outer diameter of the end face at the other side of the sealing conical section 12 is usually smaller than the inner diameter of the installation face of the heat insulation cabin 3 by about 10mm, namely, a gap of 5mm is formed at one side, so that errors caused by installation of the heat insulation cabin 3 and the flywheel can be compensated. Meanwhile, the thermal insulation cabin 3 is large and is designed to be halved along the central line, so that the flatness and the verticality of the installation surface cannot be completely guaranteed during installation, the environment outside the thermal insulation cabin 3 is high-temperature and low-temperature environment, and the expansion amount of the thermal insulation cabin 3 along the axial direction is always changed, so that a flexible connection mode is designed between the installation surface of the thermal insulation cabin 3 and the end surface of the sealed conical section 12. The installation surface of the heat insulation cabin 3 and the end surface of the sealing conical section 12 are sealed through the first silicon rubber sealing gasket 11, the first silicon rubber sealing gasket 11 and the installation surface of the heat insulation cabin 3 are compressed through the outer pressing plate 14, the first silicon rubber sealing gasket 11 and the second silicon rubber sealing gasket 13 are compressed through the inner pressing plate 15, and the axial error, the installation error and the compensation thermal expansion amount between the heat insulation cabin 3 and the sealing conical section 12 can be effectively compensated through flexible connection.
A sealing ring 16 is designed at the inner pressure plate 15, 4 threaded connectors are radially designed at the sealing ring 16, a vent joint 17 is in threaded connection with the sealing ring 16, the vent joint 17 can be a pneumatic quick joint rotating for 360 degrees, and compressed air after drying of the test bed is connected to the vent joint 17 through a pressure reducing valve. When the turboshaft engine is subjected to environmental tests, the pressure in the environmental test chambers at different heights is different, and the pressure of compressed air can be dynamically adjusted through the pressure reducing valve, so that the optimal sealing effect is achieved.
The sealing ring 16 is connected with the inner pressure plate 15 through a bolt 18, and when the sealing ring 16 and the inner pressure plate 15 are fixed through the bolt 18, a spring washer 19 and a flat washer 110 are arranged and fixed through the bolt 18; the spring washer 19 is closely attached to the bolt 18, and the flat washer 110 is disposed above the spring washer 19, so as to achieve a tight fixing effect.
The transmission shaft 4 and the sealing ring 16 are arranged in a clearance fit manner. In order to adjust the gap between the sealing ring 16 and the transmission shaft 4 to be uniform, a 2mm adjusting gap is designed between the sealing ring 16 and the inner pressure plate 15, and the gap between the sealing ring 16 and the transmission shaft 4 is adjusted by adjusting the relative position between the sealing ring 16 and the inner pressure plate 15. According to experience, the clearance between the sealing ring 16 and the transmission shaft 4 is generally adjusted to be 0.02-0.03 mm.
In order to ensure that the transmission shaft 4 flexibly rotates in the sealing ring 16 at a high speed, the transmission shaft 4 and the sealing ring 16 are designed to be in clearance fit, the end of the transmission shaft 4 is still in a negative pressure environment, and lubricating oil at the end of the transmission shaft 4 still has the possibility of leaking to an environmental test chamber. Therefore, 3-4 annular grooves 162 are designed at the inner diameter of the sealing ring 16, as shown in fig. 3, fig. 3 is a schematic view of the sealing ring structure according to the embodiment of the present invention. The pressure difference across the drive shaft 4 decreases step by step after passing through the annular groove 162. Meanwhile, in order to obtain a better sealing effect, the annular grooves are provided with vent holes 161, and external compressed air can seal the gaps through the vent holes 161. When the starting rule of the turboshaft engine is tested, the pressures in the environment test chambers at different heights are different, and the pressure of the sealing gas is adjusted according to the corresponding pressures at different heights, so that the optimal sealing effect is achieved.
The sealing device for the transmission shaft of the heat insulation cabin provided by the invention isolates different environments at two ends of the transmission shaft, ensures that the dynamometer and the flywheel work in a normal temperature and normal pressure environment, and the turboshaft engine can perform tests such as a starting rule test, high-low temperature starting, acceleration and the like in an environment test cabin.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A sealing device for a transmission shaft of a heat insulation cabin is characterized in that,
the sealing devices (1) are symmetrically arranged along the transmission shaft (4);
the sealing device (1) comprises: the sealing conical section (12), the silicon rubber sealing gasket and the pressing plate are tightly sealed;
the silicone rubber sealing gasket comprises a first silicone rubber sealing gasket (11) and a second silicone rubber sealing gasket (13);
the pressing plate comprises an outer pressing plate (14) and an inner pressing plate (15);
the sealing conical section (12) is connected with the mounting surface of the heat insulation cabin (3);
and the second silicon rubber sealing gasket (13) is fixed with the mounting surfaces of the sealing conical section (12) and the heat insulation cabin (3) through an outer pressing plate (14) and an inner pressing plate (15) respectively.
2. The insulated cabin drive shaft seal of claim 1,
the first silicon rubber sealing gasket (11) is fixed with the end face of the dynamometer or the flywheel (2) through a bolt (18);
one end of the sealing conical section (12) and the end face of the dynamometer or the flywheel (2) are sealed through a first silicon rubber sealing gasket (11), and the other end of the sealing conical section and the mounting surface of the heat insulation cabin (3) are in the same vertical plane.
3. The insulated cabin drive shaft seal of claim 1,
the specific connection mode of the sealing conical section (12) and the mounting surface of the heat insulation cabin (3) is a flexible connection mode of a second silicon rubber sealing gasket (13).
4. The insulated cabin drive shaft seal of claim 1,
the sealing device (1) further comprises: a sealing ring (16) and a venting connector (17);
the sealing ring (16) is arranged at the transmission shaft (4);
the sealing ring (16) and the inner pressure plate (15) are fixed through bolts (18).
5. The insulated cabin drive shaft seal of claim 4,
a threaded interface is radially arranged at the position of the sealing ring (16), and the ventilation joint (17) is in threaded connection with the sealing ring (16);
the air vent joint (17) comprises a 360-degree rotary pneumatic quick joint.
6. The insulated cabin drive shaft seal of claim 4,
when the sealing ring (16) and the inner pressure plate (15) are fixed through the bolts (18), a spring washer (19) and a flat washer (110) are arranged and fixed through the bolts (18); the spring washer (19) is closely attached to the bolt (18), and the flat washer (110) is arranged above the spring washer (19).
7. The insulated cabin drive shaft seal of claim 4,
the sealing ring (16) and the inner pressure plate (15) are designed with a certain gap, and the gap between the sealing ring (16) and the transmission shaft (4) can be further adjusted by adjusting the relative position between the sealing ring (16) and the inner pressure plate (15).
8. The insulated cabin drive shaft seal of claim 4,
the inner diameter of the sealing ring (16) is in clearance fit with the transmission shaft (4), and an annular groove (162) is axially designed along the transmission shaft (4) in the inner diameter of the sealing ring (16).
9. The insulated cabin drive shaft seal of claim 8,
the number of the annular grooves (162) is 3-4, and the pressure difference at two ends of the transmission shaft (4) is gradually reduced after passing through the annular grooves (162).
10. The insulated cabin drive shaft seal of claim 8 or 9,
the inner diameter of the sealing ring (16) is provided with a vent hole (161) at the annular groove (162), and compressed air can enter the annular groove (162) through the vent hole (161).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111445068.7A CN114046354B (en) | 2021-11-30 | 2021-11-30 | Transmission shaft sealing device of heat insulation cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111445068.7A CN114046354B (en) | 2021-11-30 | 2021-11-30 | Transmission shaft sealing device of heat insulation cabin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114046354A true CN114046354A (en) | 2022-02-15 |
| CN114046354B CN114046354B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111445068.7A Active CN114046354B (en) | 2021-11-30 | 2021-11-30 | Transmission shaft sealing device of heat insulation cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114046354B (en) |
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|---|---|---|---|---|
| GB580211A (en) * | 1944-06-17 | 1946-08-30 | William Murray | Improvements in and relating to oil seals for shafts and other rotary or reciprocable parts |
| JP2008096111A (en) * | 2006-10-05 | 2008-04-24 | Toyo Eng Works Ltd | Environmental test device of engine for mobile vehicle |
| KR20120069328A (en) * | 2010-12-20 | 2012-06-28 | 한국항공우주연구원 | Vibration support beam to guarantee the safety of the nozzle for high altitude firing test |
| CN103423424A (en) * | 2013-08-20 | 2013-12-04 | 中国航空动力机械研究所 | Shaft end protecting device for central driving shaft |
| CN109520741A (en) * | 2018-10-29 | 2019-03-26 | 中国航发沈阳发动机研究所 | A kind of aeroengine combustor buring room casing pressure experimental device |
| CN111707474A (en) * | 2020-07-02 | 2020-09-25 | 河北华北柴油机有限责任公司 | Outboard engine assembly performance test bench |
| CN113124163A (en) * | 2021-04-29 | 2021-07-16 | 西安航天动力研究所 | Symmetrical low-temperature-resistant combined sealing device |
| CN113310701A (en) * | 2021-06-15 | 2021-08-27 | 北京航空工程技术研究中心 | Complete machine tester for mechanical system of military turbofan engine |
| CN113654701A (en) * | 2021-08-24 | 2021-11-16 | 中国航发湖南动力机械研究所 | Dynamic stress measuring device for rotor blade of aircraft engine and application of dynamic stress measuring device |
-
2021
- 2021-11-30 CN CN202111445068.7A patent/CN114046354B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB580211A (en) * | 1944-06-17 | 1946-08-30 | William Murray | Improvements in and relating to oil seals for shafts and other rotary or reciprocable parts |
| JP2008096111A (en) * | 2006-10-05 | 2008-04-24 | Toyo Eng Works Ltd | Environmental test device of engine for mobile vehicle |
| KR20120069328A (en) * | 2010-12-20 | 2012-06-28 | 한국항공우주연구원 | Vibration support beam to guarantee the safety of the nozzle for high altitude firing test |
| CN103423424A (en) * | 2013-08-20 | 2013-12-04 | 中国航空动力机械研究所 | Shaft end protecting device for central driving shaft |
| CN109520741A (en) * | 2018-10-29 | 2019-03-26 | 中国航发沈阳发动机研究所 | A kind of aeroengine combustor buring room casing pressure experimental device |
| CN111707474A (en) * | 2020-07-02 | 2020-09-25 | 河北华北柴油机有限责任公司 | Outboard engine assembly performance test bench |
| CN113124163A (en) * | 2021-04-29 | 2021-07-16 | 西安航天动力研究所 | Symmetrical low-temperature-resistant combined sealing device |
| CN113310701A (en) * | 2021-06-15 | 2021-08-27 | 北京航空工程技术研究中心 | Complete machine tester for mechanical system of military turbofan engine |
| CN113654701A (en) * | 2021-08-24 | 2021-11-16 | 中国航发湖南动力机械研究所 | Dynamic stress measuring device for rotor blade of aircraft engine and application of dynamic stress measuring device |
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| Publication number | Publication date |
|---|---|
| CN114046354B (en) | 2023-11-24 |
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