CN116105966A - Device and method for fixing internal lead of blade model surface pressure sensor - Google Patents
Device and method for fixing internal lead of blade model surface pressure sensor Download PDFInfo
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- CN116105966A CN116105966A CN202310385840.3A CN202310385840A CN116105966A CN 116105966 A CN116105966 A CN 116105966A CN 202310385840 A CN202310385840 A CN 202310385840A CN 116105966 A CN116105966 A CN 116105966A
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention belongs to the technical field of rotor wing model wind tunnel test devices, and particularly relates to a device and a method for fixing an internal lead of a blade model surface pressure sensor. The technical proposal is as follows: the internal lead fixing device of the blade model surface pressure sensor comprises a pressure bag, wherein the surface of the pressure bag is sprayed with an adhesive; the pressure bag is filled into the cavity of the blade, and the lead wire of the surface pressure sensor is tightly adhered to the inner wall of the cavity of the blade; at least one adapter is connected to the pressure bag, wherein the at least one adapter is used for inflating or deflating the pressure bag. The invention provides a pressure bag for fixing an internal lead of a helicopter blade model surface pressure sensor and a fixing method thereof.
Description
Technical Field
The invention belongs to the technical field of rotor wing model wind tunnel test devices, and particularly relates to a device and a method for fixing an internal lead of a blade model surface pressure sensor.
Background
In helicopter wind tunnel tests, it is often necessary to evaluate and analyze the load applied to the surface of a helicopter blade model. The analysis is usually to install a pressure sensor on the surface of the blade, the pressure sensor is connected with a wire, the wire is connected with a plug installed in the rotation center through a flat conduit inside the blade model, and finally, the power supply and data acquisition of the pressure sensor on the surface of the blade are realized. Because the rotor rotates at a high speed in the test process, relatively large centrifugal force is generated, the lead of the pressure sensor is relatively thin, the lead is easy to break due to the large centrifugal force, the implementation of power supply and data transmission cannot be realized, and finally the test is forced to be stopped.
The invention mainly aims at the problems, and solves the problems of wire throwing, wire breaking and the like caused by high-speed centrifugal force in the wind tunnel test process of the rotor wing model; and the test cost consumption caused by the damage of the sensor is effectively reduced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a pressure bag for fixing an internal lead of a pressure sensor on the surface of a helicopter blade model and a fixing method thereof.
The technical scheme adopted by the invention is as follows:
the internal lead fixing device of the blade model surface pressure sensor comprises a pressure bag, wherein the surface of the pressure bag is sprayed with an adhesive; the pressure bag is filled into the cavity of the blade, and the lead wire of the surface pressure sensor is tightly adhered to the inner wall of the cavity of the blade; at least one adapter is connected to the pressure bag, wherein the at least one adapter is used for inflating or deflating the pressure bag.
The pressure bag can tightly attach and bond the lead wire of the surface pressure sensor with the inner wall of the cavity of the blade after being inflated, and the lead wire of the surface pressure sensor is fixed on the inner wall of the cavity of the blade, so that the lead wire of the surface pressure sensor can not be broken due to the centrifugal force when the rotor rotates at high speed in the test process, and the surface sensor can stably transmit data.
As a preferable scheme of the invention, the number of the adapter on the pressure bag is two, and one adapter is connected with a pressure monitoring meter. When the pressure bag is inflated, the inflation condition of the pressure bag can be visually inspected through pressure monitoring.
As a preferable scheme of the invention, the pressure bag is provided with a threaded hole for connecting the adapter, and the pressure bag is also provided with a through hole for communicating the threaded hole with the interior of the pressure bag; the adapter comprises a threaded pipe, the threaded pipe is in threaded connection with a threaded hole in the pressure bag, a sealing plate is arranged at one end of the threaded pipe, which is connected with the pressure bag, at least one vent hole is arranged on the sealing plate, and the vent hole is located in an area, corresponding to a step surface between the through hole and the threaded hole, on the sealing plate.
After the threaded pipe is unscrewed relative to the threaded hole on the pressure bag, the vent hole on the sealing plate is opened, so that air flow can enter and exit the pressure bag through the threaded pipe, the vent hole and the through hole. After the threaded pipe is screwed tightly relative to the threaded hole on the pressure bag, the vent hole on the sealing plate is blocked, and air flow cannot enter and exit the pressure bag. Thus, the threaded tube can be unscrewed before inflation or deflation is required, and the spiral tube can be screwed after inflation or deflation is completed.
As a preferable scheme of the invention, a sealing gasket is arranged between the step surface between the through hole and the threaded hole and the sealing plate, and the vent hole corresponds to a sealing gasket coverage area. When the threaded tube is screwed into the threaded hole of the pressure bag, the gasket is compressed. At this time, the sealing gasket can be used for completely blocking the vent holes on the sealing plate, so that the air flow is prevented from entering and exiting the pressure bag, and good sealing is ensured.
As a preferred embodiment of the invention, the inflated shape of the pressure bag matches at least part of the section of the cavity of the blade. The surface of the pressure bag is matched with the inner wall of the cavity of the blade after the pressure bag is inflated, so that the inflation pressure bag can be ensured to uniformly compress the lead wire of the surface pressure sensor on the inner wall of the cavity of the blade.
The method for fixing the internal lead of the blade model surface pressure sensor comprises the following steps:
a surface pressure sensor is arranged on the blade model, and a lead of the surface pressure sensor penetrates into the cavity of the blade and is led out from one end;
spraying an adhesive on the surface of the pressure bag;
filling the pressure bag into a cavity of the blade;
the pressure bag is inflated through the adapter, and the lead is tightly attached to and adhered to the inner wall of the cavity of the blade.
The pressure bag can tightly attach and bond the lead wire of the surface pressure sensor with the inner wall of the cavity of the blade after being inflated, and the lead wire of the surface pressure sensor is fixed on the inner wall of the cavity of the blade, so that the lead wire of the surface pressure sensor can not be broken due to the centrifugal force when the rotor rotates at high speed in the test process, and the surface sensor can stably transmit data.
As a preferred embodiment of the present invention, the blade upper surface sensor mounting area is cleaned prior to installation of the surface pressure sensor. Cleaning the rotor model, in particular cleaning the mounting base of the surface pressure sensor on the rotor model, ensures that the size of the mounting base is coordinated with the surface pressure sensor.
As a preferable scheme of the invention, before spraying the adhesive, partial gas is filled into the pressure bag, so that the pressure bag is ensured to be unfolded into a strip shape similar to an airfoil shape, the adapter is screwed, and the pressure bag is ensured to be completely sealed. Before the pressure bag is placed into the cavity of the blade, partial gas is filled into the pressure bag, so that the pressure bag is conveniently sent into the cavity of the blade, and the situation that the lead is easy to squeeze away when the uninflated pressure bag is directly placed into the cavity of the blade and inflated is avoided.
As a preferable scheme of the invention, after the pressure bag is filled into the blade cavity and inflated, the adhesive is dried; after drying, checking whether the connection of the pressure bag and the blade is reliable, if not, taking out the pressure bag, spraying the adhesive again, and then filling the pressure bag into the cavity of the blade until the pressure bag and the blade are reliably adhered.
As the preferable scheme of the invention, after the pressure bag is firmly bonded with the inner wall of the cavity of the blade, the gas in the pressure bag is discharged, and then the pressure monitoring meter is taken down, so that the inlets of all the adapter are sealed.
The beneficial effects of the invention are as follows:
1. the pressure bag can tightly attach and bond the lead wire of the surface pressure sensor with the inner wall of the cavity of the blade after being inflated, and the lead wire of the surface pressure sensor is fixed on the inner wall of the cavity of the blade, so that the lead wire of the surface pressure sensor can not be broken due to the centrifugal force when the rotor rotates at high speed in the test process, and the surface sensor can stably transmit data.
2. After the threaded pipe is unscrewed relative to the threaded hole on the pressure bag, the vent hole on the sealing plate is opened, so that air flow can enter and exit the pressure bag through the threaded pipe, the vent hole and the through hole. After the threaded pipe is screwed tightly relative to the threaded hole on the pressure bag, the vent hole on the sealing plate is blocked, and air flow cannot enter and exit the pressure bag. Therefore, the threaded pipe can be unscrewed before inflation or deflation is needed, and the spiral pipe is screwed after inflation or deflation is completed, so that the pressure bag can be conveniently and rapidly switched between inflation and deflation and sealing states.
Drawings
FIG. 1 is an assembly view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a partial enlarged view at B in FIG. 1;
FIG. 4 is a schematic view of the structure of the pressure bag;
FIG. 5 is a partial block diagram of a pressure bag;
FIG. 6 is a schematic structural view of an adapter;
FIG. 7 is an enlarged view of a portion of FIG. 6 at C;
FIG. 8 is an assembly view of the adapter with the pressure bag released;
fig. 9 is an assembly view of the adapter with the pressure bag sealed.
In the figure: 1-a paddle; 2-conducting wires; 3-a pressure bag; 4-sealing gasket; 5-a surface pressure sensor; 6-a pressure monitoring meter; 7-adapter; 11-a mounting base; 31-plastic film; 32-end socket; 71-threaded pipe; 72-sealing plates; 321-threaded holes; 322-through holes; 711-hex nut; 721-vent.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
As shown in fig. 1 to 3, the lead fixing device in the blade model surface pressure sensor of the embodiment comprises a pressure bag 3, wherein an adhesive is sprayed on the surface of the pressure bag 3; the pressure bag 3 is arranged in the cavity of the blade 1, and the lead wire 2 of the surface pressure sensor 5 is tightly adhered to the inner wall of the cavity of the blade 1; two adapters 7 are connected to the pressure bag 3, one adapter 7 is used for inflating or deflating the pressure bag 3, and the other adapter 7 is connected to the pressure monitoring meter 6.
After the pressure bag 3 is inflated, the lead wires 2 of the surface pressure sensor 5 can be tightly adhered to the inner walls of the cavities of the blades 1, and the lead wires 2 of the surface pressure sensor 5 are fixed on the inner walls of the cavities of the blades 1, so that the lead wires 2 of the surface pressure sensor 5 cannot be broken due to centrifugal force when a rotor rotates at a high speed in the test process, and the surface sensor can stably transmit data.
As shown in fig. 4 and 5, the pressure bag 3 includes a plastic film 31, an end closure 32 is connected to an open end of the plastic film 31, a threaded hole 321 for connecting the adapter 7 is provided on the end closure 32, and a through hole 322 for communicating the threaded hole 321 with the inside of the plastic film 31 is further provided on the end closure 32. The section of the seal head 32 is similar to the section of the wing-shaped flat tube, and a gap of 2-3 mm is reserved between the seal head 32 and the inner wall of the wing-shaped flat tube. The thickness of the plastic film 31 is required to bear a certain pressure, usually about 0.8 Mpa. The surface of the pressure bag 3 has certain roughness, so that the pressure bag is firmly adhered to the wall surface of the rotor wing flat tube after being sprayed with the adhesive.
As shown in fig. 6 to 9, the adapter 7 includes a threaded tube 71, the threaded tube 71 is screwed with a threaded hole 321 on the pressure bag 3, a sealing plate 72 is disposed at one end of the threaded tube 71 connected with the pressure bag 3, at least one vent hole 721 is disposed on the sealing plate 72, a sealing pad 4 is disposed between a step surface between the through hole 322 and the threaded hole 321 and the sealing plate 72, and the vent hole 721 corresponds to a coverage area of the sealing pad 4. The threaded pipe 71 is provided with a hexagonal nut 711 for facilitating screwing the adapter 7. The adapter 7 is usually made of metal or plastic, the main body structure is tubular, and a hexagonal nut 711 is provided for screwing the adapter 7. The cylinder below the hexagonal nut 711 is an external thread, and is mainly used for being in threaded connection with the seal head 32 of the pressure bag 3.
As shown in fig. 8 and 9, when the screw tube 71 is unscrewed with respect to the screw hole 321 in the pressure bag 3, the gasket 4 is not compressed any more, the vent hole 721 in the sealing plate 72 is opened, and thus the air flow can enter and exit the pressure bag 3 through the screw tube 71, the vent hole 721 and the through hole 322. After screwing the threaded tube 71 relative to the threaded hole 321 on the pressure bag 3, the sealing gasket 4 is pressed, the air vent 721 on the sealing plate 72 is blocked by the sealing gasket 4, and air flow cannot enter and exit the pressure bag 3, so that good sealing is ensured. Thus, the threaded tube 71 may be unscrewed before inflation or deflation is required, and the helical tube may be screwed after inflation or deflation is completed. During the inflation and deflation process, the inflation condition of the pressure bag 3 can be observed through the pressure monitoring meter 6.
Still further, the inflated shape of the pressure bag 3 matches at least part of the section of the cavity of the blade 1. The surface of the pressure bag 3 is matched with the inner wall of the cavity of the blade 1 after the pressure bag 3 is inflated, so that the inflation pressure bag 3 can be ensured to uniformly press the lead wires 2 of the surface pressure sensor 5 on the inner wall of the cavity of the blade 1.
The method for fixing the internal lead of the blade model surface pressure sensor of the embodiment comprises the following steps:
s1: cleaning the rotor model, and in particular cleaning the mounting base 11 of the rotor model upper surface pressure sensor 5, ensures that the mounting base 11 dimensions are coordinated with the surface pressure sensor 5.
S2: a surface pressure sensor 5 is arranged on the blade 1 model, and a lead wire 2 of the surface pressure sensor 5 penetrates into the cavity of the blade 1 and is led out from one end.
S3: an adapter 7 is arranged at the end of the pressure bag 3, wherein a pressure monitoring meter 6 is arranged on one adapter 7, and a compressed air conveying hose is connected to the other adapter 7. Compressed air is filled into the pressure bag 3 to ensure that the pressure bag 3 is unfolded to be in a strip shape similar to an airfoil shape, and the adapter 7 is screwed tightly to ensure that the pressure bag 3 is completely sealed. Before the pressure bag 3 is placed into the cavity of the blade 1, part of gas is filled into the pressure bag 3, so that the pressure bag 3 is conveniently sent into the cavity of the blade 1, and the situation that the lead 2 is easy to squeeze away when the uninflated pressure bag 3 is directly placed into the cavity of the blade 1 and inflated is avoided.
S4: the pressure bag 3 is subjected to trial assembly: placing the pressure bag 3 into the cavity of the blade 1, and checking whether the pressure bag 3 can be placed into the cavity of the blade 1; if not, the pressure bag 3 is taken out for adjustment, and the blade 1 cavity is filled again after adjustment until the pressure bag 3 is completely filled into the blade 1 cavity.
S5: and spraying an adhesive on the surface of the pressure bag 3. When the welding agent is coated, the pressure bag 3 which is adjusted and checked to be qualified in the step S4 is taken out, and the adhesive is sprayed on the surface of the pressure bag 3.
S6: the pressure bag 3 is fitted into the cavity of the blade 1.
S7: and the adapter 7 on the pressure bag 3 is loosened, compressed air is continuously filled into the pressure bag 3, the plastic film of the pressure bag is expanded, and the lead 2 is ensured to be supported to the inner wall surface of the rotor wing flat tube. The adapter 7 is screwed tightly to ensure the pressure bag 3 is completely sealed.
S8: the whole rotor blade 1 is stored at normal temperature, so that the adhesive sprayed on the pressure bag 3 is naturally dried, and after drying, whether the pressure bag 3 is reliably connected with the blade 1 is checked; if not, taking out the pressure bag 3, and repeating the steps S4-S7 until the pressure bag 3 and the rotary blade 1 are bonded reliably.
S9: releasing the adapter 7 on the pressure bag 3 and discharging the air in the bag. And then the pressure monitoring meter 6 is taken down, and the inlets of all the adapter 7 are sealed.
The invention is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present invention, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present invention, fall within the scope of protection of the present invention.
Claims (10)
1. The utility model provides a paddle model surface pressure sensor internal lead fixing device which characterized in that: comprises a pressure bag (3), wherein the surface of the pressure bag (3) is sprayed with an adhesive; the pressure bag (3) is arranged in the cavity of the blade (1), and the lead (2) of the surface pressure sensor (5) is tightly adhered to the inner wall of the cavity of the blade (1); at least one adapter (7) is connected to the pressure bag (3), wherein the at least one adapter (7) is used for inflating or deflating the pressure bag (3).
2. The blade form surface pressure sensor internal lead fixing device according to claim 1, wherein: the number of the adapter (7) on the pressure bag (3) is two, and one adapter (7) is connected with a pressure monitoring meter (6).
3. The blade form surface pressure sensor internal lead fixing device according to claim 1, wherein: the pressure bag (3) is provided with a threaded hole (321) for connecting the adapter (7), and the pressure bag (3) is also provided with a through hole (322) for communicating the threaded hole (321) with the inside of the pressure bag (3); the adapter (7) comprises a threaded pipe (71), the threaded pipe (71) is in threaded connection with a threaded hole (321) in the pressure bag (3), a sealing plate (72) is arranged at one end, connected with the pressure bag (3), of the threaded pipe (71), at least one vent hole (721) is arranged on the sealing plate (72), and the vent hole (721) is located in an area, corresponding to a step surface between the through hole (322) and the threaded hole (321), of the sealing plate (72).
4. A paddle model surface pressure sensor internal lead fixture as claimed in claim 3, characterized in that: a sealing gasket (4) is arranged between the step surface between the through hole (322) and the threaded hole (321) and the sealing plate (72), and the vent hole (721) corresponds to the coverage area of the sealing gasket (4).
5. The blade form surface pressure sensor internal lead fixing device according to claim 1, wherein: the inflated shape of the pressure bag (3) is matched with at least part of the section of the cavity of the blade (1).
6. A method for fixing an internal lead of a blade model surface pressure sensor using the internal lead fixing device for a blade model surface pressure sensor according to claim 1, characterized by: the method comprises the following steps:
a surface pressure sensor (5) is arranged on the blade (1) model, and a lead (2) of the surface pressure sensor (5) penetrates into a cavity of the blade (1) and is led out from one end;
spraying an adhesive on the surface of the pressure bag (3);
loading the pressure bag (3) into the cavity of the blade (1);
the pressure bag (3) is inflated through the adapter (7), and the lead (2) is tightly adhered to and stuck to the inner wall of the cavity of the blade (1).
7. The method for fixing the internal lead of the blade model surface pressure sensor according to claim 6, wherein the method comprises the following steps: the upper surface sensor mounting area of the blade (1) is cleaned before the surface pressure sensor (5) is installed.
8. The method for fixing the internal lead of the blade model surface pressure sensor according to claim 6, wherein the method comprises the following steps: the pressure bag (3) is filled with a part of gas before the adhesive is sprayed.
9. The method for fixing the internal lead of the blade model surface pressure sensor according to claim 6, wherein the method comprises the following steps: the pressure bag (3) is filled into the cavity of the blade (1) and inflated, and the adhesive is dried; after drying, checking whether the pressure bag (3) is connected with the blade (1) reliably, if not, taking out the pressure bag (3), spraying the adhesive again, and then filling the cavity of the blade (1) until the pressure bag (3) is bonded with the blade (1) reliably.
10. The method for fixing the internal lead of the blade model surface pressure sensor according to claim 9, wherein the method comprises the following steps: and after the pressure bag (3) is firmly adhered to the inner wall of the cavity of the blade (1), releasing the gas in the pressure bag (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310385840.3A CN116105966B (en) | 2023-04-12 | 2023-04-12 | Device and method for fixing internal lead of blade model surface pressure sensor |
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| CN202310385840.3A CN116105966B (en) | 2023-04-12 | 2023-04-12 | Device and method for fixing internal lead of blade model surface pressure sensor |
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| CN116105966B CN116105966B (en) | 2023-06-13 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909210Y (en) * | 2005-08-23 | 2007-06-06 | 比亚迪股份有限公司 | Performance testing device for safety bag air generator |
| CN105758611A (en) * | 2016-03-07 | 2016-07-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Impact resisting device for wind-tunnel balance |
| US20160223418A1 (en) * | 2013-09-09 | 2016-08-04 | Inficon Gmbh | Method of and Apparatus for Measuring Vacuum Pressure |
| EP3299144A1 (en) * | 2016-09-26 | 2018-03-28 | Boehringer Ingelheim International GmbH | Method for forming and / or testing a bag inside a container |
| CN108069551A (en) * | 2017-12-13 | 2018-05-25 | 天津中天精科科技有限公司 | A kind of urban safety wastewater efficient processing unit |
| CN110411646A (en) * | 2019-07-09 | 2019-11-05 | 中铁十四局集团大盾构工程有限公司 | Formation pore hydraulic pressure force test device, production method and its application method after a kind of shield tunnel wall |
| US20190335980A1 (en) * | 2016-06-23 | 2019-11-07 | Crospon Limited | Pressure monitoring apparatus, a catheter and a method for monitoring pressure in a liquid |
| CN110815859A (en) * | 2019-11-29 | 2020-02-21 | 株洲时代新材料科技股份有限公司 | Design and manufacturing method of composite material blade and composite material blade |
| CN211055350U (en) * | 2019-12-03 | 2020-07-21 | 浙江海洋大学 | Multifunctional lifeboat |
| CN213022090U (en) * | 2020-09-22 | 2021-04-20 | 善创实业(上海)有限公司 | Isolated film type pressure sensor |
-
2023
- 2023-04-12 CN CN202310385840.3A patent/CN116105966B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909210Y (en) * | 2005-08-23 | 2007-06-06 | 比亚迪股份有限公司 | Performance testing device for safety bag air generator |
| US20160223418A1 (en) * | 2013-09-09 | 2016-08-04 | Inficon Gmbh | Method of and Apparatus for Measuring Vacuum Pressure |
| CN105758611A (en) * | 2016-03-07 | 2016-07-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Impact resisting device for wind-tunnel balance |
| US20190335980A1 (en) * | 2016-06-23 | 2019-11-07 | Crospon Limited | Pressure monitoring apparatus, a catheter and a method for monitoring pressure in a liquid |
| EP3299144A1 (en) * | 2016-09-26 | 2018-03-28 | Boehringer Ingelheim International GmbH | Method for forming and / or testing a bag inside a container |
| CN108069551A (en) * | 2017-12-13 | 2018-05-25 | 天津中天精科科技有限公司 | A kind of urban safety wastewater efficient processing unit |
| CN110411646A (en) * | 2019-07-09 | 2019-11-05 | 中铁十四局集团大盾构工程有限公司 | Formation pore hydraulic pressure force test device, production method and its application method after a kind of shield tunnel wall |
| CN110815859A (en) * | 2019-11-29 | 2020-02-21 | 株洲时代新材料科技股份有限公司 | Design and manufacturing method of composite material blade and composite material blade |
| CN211055350U (en) * | 2019-12-03 | 2020-07-21 | 浙江海洋大学 | Multifunctional lifeboat |
| CN213022090U (en) * | 2020-09-22 | 2021-04-20 | 善创实业(上海)有限公司 | Isolated film type pressure sensor |
Non-Patent Citations (2)
| Title |
|---|
| 张卫国: ""旋翼翼型气动设计与验证方法"", 《空气动力学学报》, vol. 06, no. 39, pages 136 - 148 * |
| 许和勇: ""基于充气前缘技术的旋翼翼型动态失速抑制"", 《航空学报》, vol. 06, no. 38, pages 91 - 103 * |
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| CN116105966B (en) | 2023-06-13 |
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