CN111024298A - Adjustable total pressure probe - Google Patents
Adjustable total pressure probe Download PDFInfo
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- CN111024298A CN111024298A CN201911346627.1A CN201911346627A CN111024298A CN 111024298 A CN111024298 A CN 111024298A CN 201911346627 A CN201911346627 A CN 201911346627A CN 111024298 A CN111024298 A CN 111024298A
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- total pressure
- tube core
- head
- probe
- pressure probe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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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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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention belongs to the field of atmospheric data systems, and particularly relates to an adjustable total pressure probe. The air pressure signal acquisition function is provided. Including always pressing head, body, tube core, support to constitute, wherein body, tube core, support become a whole through the welding, always press the head to pass through fastening screw to be installed in the screwed hole of tube core, install at always pressing the foremost of probe, always press the head to have an interior cone cavity, should interior cone cavity maximum diameter end be provided with body inner wall matched with torus, the pressure transmission groove has been seted up with interior cone cavity junction to the torus, the inside design of tube core has pressure signal transmission via hole, forms armor heating wire winding layer after body and the tube core cooperation, and the armor heating wire winding is at the tube core outer wall. The product has the advantages of simple structure, light weight, simple daily ground service maintenance, small external disturbance, small influence caused by processing and installation and the like, can effectively reduce the use and maintenance cost, and has higher use economy.
Description
Technical Field
The invention belongs to the field of atmospheric data systems, and particularly relates to an adjustable total pressure probe. The air pressure signal acquisition function is provided.
Background
The atmospheric data system is an important component of a helicopter, wherein the acquisition of the total pressure signal is directly related to the measurement precision of Mach number and indicated airspeed, and because the helicopter has omnidirectional maneuvering characteristics such as vertical take-off and landing, hovering in the air, large-angle sideslip flight and the like in flight and the influence of rotor downwash airflow, the accurate measurement of the total pressure signal is of great importance to the safe flight of the helicopter.
The existing helicopter adopts two general pressure acquisition modes, one mode is a three-axis omnidirectional atmosphere data system commonly adopted by armed helicopters, the system can intensively adopt the triaxial speed, the attack angle and the sideslip angle of the helicopter, the number of sensors on the surface of a helicopter body can be effectively reduced, and the system also has the defects of complex structure, large volume, heavy weight, complex daily ground service maintenance and the like. The other acquisition mode is a traditional overhanging type total pressure sensor, and the sensor has the advantages of simple structure, simple maintenance and the like, but has the defects of large disturbance of a machine body, high requirement on an installation position, easy processing and installation influence on a measurement result and the like. Therefore, it is urgently needed to develop a pressure acquisition product which has a simple structure and is not easy to be influenced and greatly fluctuated by the installation and use environment.
Disclosure of Invention
The total pressure sensor with the advantages of the triaxial omnidirectional airspeed head and the traditional overhanging airspeed head is developed, overcomes the defects that the triaxial omnidirectional airspeed head is complex in structure, large in size and heavy in weight, and the traditional overhanging airspeed head is disturbed greatly by a machine body, and the total pressure sensor with the advantages of the traditional overhanging airspeed head needs to be reserved, so that the total pressure sensor has the advantages of being simple in structure, light in weight and capable of effectively reducing the total pressure signal fluctuation caused by machine body disturbance, installation errors and the like.
Technical scheme
The utility model provides a total pressure probe with adjustable, includes to press head, body, tube core, support to constitute totally, and wherein body, tube core, support become a whole through the welding, and it installs in the screwed hole of tube core through fastening screw to press the head totally, installs at the foremost of pressing the probe totally, presses the head to have an interior cone cavity body totally, and this interior cone cavity body maximum diameter end is provided with the torus with body inner wall matched with, the pressure transmission groove has been seted up with interior cone cavity body junction to the torus, the inside design of tube core has pressure signal transmission via hole, forms armor heating wire winding layer behind body and the tube core cooperation, and the armor heating wire winding is at the tube core outer wall.
The support is used for being connected with the machine body and is connected with the pipe body and the pipe core through welding to form a whole total pressure probe.
The pressure transfer groove should meet the air flow demand.
The direction of the notch of the pressure transfer groove is in horizontal relation with the circular ring surface.
The inner cone cavity of the total pressure head is in a flaring shape, the flaring is intersected with the outermost side of the torus, and incoming flow air signals are collected to the maximum extent.
The total pressure head material should satisfy three-proofing design requirements.
The support is connected with the machine body through screws, and the support arm is designed in a pneumatic optimization shape.
The width of the circular ring surface is 5 mm.
Technical effects
The product has the advantages of simple structure, light weight, simple daily ground service maintenance, small external disturbance, small influence caused by processing and installation and the like, can effectively reduce the use and maintenance cost, and has higher use economy.
Drawings
FIG. 1 is a product outline drawing
FIG. 2 is an exploded view of the product
FIG. 3 is a top exploded view of the product
Detailed Description
Aiming at the technical problem to be solved, the product adopts the following measures during design:
the appearance of the product adopts the appearance of the traditional L-shaped sensor, so that the product has the advantages of simple structure and light weight; meanwhile, the inner structure of the product is innovatively designed, and the front end of the product is provided with an inner conical cavity which is flared and has a certain depth, so that the function of blocking air to form a total pressure signal is achieved, and compared with the traditional sensor, the structure is further simplified, and the weight is reduced;
the wall surface of the total pressure retardation inner cone cavity is provided with a position-adjustable notch, and the position of the notch can be adjusted according to the actual installation condition, so that the influence of external disturbance is reduced; meanwhile, the diameter of the total pressure port of the product is about 5 times of that of a conventional sensor, so that the longitudinal speed of the omnidirectional maneuvering can be more accurately acquired.
The utility model provides a total pressure probe with adjustable, includes to press head, body, tube core, support to constitute totally, and wherein body, tube core, support become a whole through the welding, and it installs in the screwed hole of tube core through fastening screw to press the head totally, installs at the foremost of pressing the probe totally, presses the head to have an interior cone cavity body totally, and this interior cone cavity body maximum diameter end is provided with the torus with body inner wall matched with, the pressure transmission groove has been seted up with interior cone cavity body junction to the torus, the inside design of tube core has pressure signal transmission via hole, forms armor heating wire winding layer behind body and the tube core cooperation, and the armor heating wire winding is at the tube core outer wall.
The support is used for being connected with the machine body and is connected with the pipe body and the pipe core through welding to form a whole total pressure probe.
The pressure transmission groove needs to meet the air flow demand, and the sensitivity requirement of pressure signal transmission is guaranteed through pneumatic simulation.
The notch direction and the ring face of the pressure transmission groove are in a horizontal relation, the notch direction can be adjusted according to the actual installation condition, signal source errors caused by factors such as disturbance of an engine body, downward washing flow of a rotor wing and installation positions are reduced, and accuracy of signal acquisition is guaranteed.
The inner cone cavity of the total pressure head is in a flaring shape, the flaring is intersected with the outermost side of the circular ring surface, incoming flow air signals are collected to the maximum extent, the defect that a traditional overhanging structure is easily influenced by flight attitude is overcome to the maximum extent on the premise that the advantages of the traditional overhanging structure are kept, and the novel combined type air pressure gauge has the advantages of being simple in structure, light in weight and wide in signal collection range.
The total pressure head material should satisfy three proofings design requirement, guarantees to satisfy the operation requirement under different environmental conditions.
The support is connected with the machine body through screws, and the support arm adopts a pneumatic appearance optimization design, so that the flying resistance after installation is reduced.
The width of the circular ring surface is 5mm, and the air tightness after installation is guaranteed.
Claims (8)
1. The utility model provides a total pressure probe with adjustable which characterized in that: comprises a total pressure head, a pipe body, a pipe core and a support; wherein body, tube core, support become a whole through the welding, always press the head to pass through fastening screw and install in the screwed hole of tube core, install at always pressing the foremost of probe, always press the head to have an interior cone cavity, should interior cone cavity maximum diameter end be provided with body inner wall matched with torus, pressure transmission groove has been seted up with interior cone cavity junction to the torus, the inside design of tube core has pressure signal transmission via hole, forms armor heater wire winding layer after body and tube core cooperation, and the armor heater wire winding is at the tube core outer wall.
2. The adjustable total pressure probe of claim 1, wherein: the support is used for being connected with the machine body and is connected with the pipe body and the pipe core through welding to form a whole total pressure probe.
3. The adjustable total pressure probe of claim 1, wherein: the pressure transfer groove should meet the air flow demand.
4. The adjustable total pressure probe of claim 1, wherein: the direction of the notch of the pressure transfer groove is in horizontal relation with the circular ring surface.
5. The adjustable total pressure probe of claim 1, wherein: the inner cone cavity of the total pressure head is in a flaring shape, the flaring is intersected with the outermost side of the torus, and incoming flow air signals are collected to the maximum extent.
6. The adjustable total pressure probe of claim 1, wherein: the total pressure head material should satisfy three-proofing design requirements.
7. The adjustable total pressure probe of claim 1, wherein: the support is connected with the machine body through screws, and the support arm is designed in a pneumatic optimization shape.
8. The adjustable total pressure probe of claim 1, wherein: the width of the circular ring surface is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911346627.1A CN111024298B (en) | 2019-12-24 | 2019-12-24 | Adjustable total pressure probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911346627.1A CN111024298B (en) | 2019-12-24 | 2019-12-24 | Adjustable total pressure probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111024298A true CN111024298A (en) | 2020-04-17 |
| CN111024298B CN111024298B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911346627.1A Active CN111024298B (en) | 2019-12-24 | 2019-12-24 | Adjustable total pressure probe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624393A (en) * | 2021-06-22 | 2021-11-09 | 成都凯天电子股份有限公司 | Atmospheric data system and method with rotor downwash effect correction |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698081A (en) * | 2013-12-01 | 2014-04-02 | 太原航空仪表有限公司 | L-shaped differential pressure type probe |
| CN204461672U (en) * | 2015-03-13 | 2015-07-08 | 中航商用航空发动机有限责任公司 | The total compression testing device of a kind of pipeline |
| CN105424267A (en) * | 2015-12-23 | 2016-03-23 | 太原航空仪表有限公司 | Probe used for total pressure measurement of rotorcraft |
| CN106248139A (en) * | 2016-07-29 | 2016-12-21 | 成都凯天电子股份有限公司 | Atmosphere parameter measurement is popped one's head in |
| CN106768605A (en) * | 2016-12-12 | 2017-05-31 | 太原航空仪表有限公司 | A kind of pressure tester of porous probe |
| CN107543649A (en) * | 2016-06-26 | 2018-01-05 | 成都凯天电子股份有限公司 | Hot gas deicing stagnation pressure pick-up |
| CN108362909A (en) * | 2018-01-12 | 2018-08-03 | 太原航空仪表有限公司 | A kind of Multi-functional probe of spherical head |
| CN207763881U (en) * | 2018-01-12 | 2018-08-24 | 太原航空仪表有限公司 | A kind of Multi-functional probe for measuring rotor downwash |
-
2019
- 2019-12-24 CN CN201911346627.1A patent/CN111024298B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698081A (en) * | 2013-12-01 | 2014-04-02 | 太原航空仪表有限公司 | L-shaped differential pressure type probe |
| CN204461672U (en) * | 2015-03-13 | 2015-07-08 | 中航商用航空发动机有限责任公司 | The total compression testing device of a kind of pipeline |
| CN105424267A (en) * | 2015-12-23 | 2016-03-23 | 太原航空仪表有限公司 | Probe used for total pressure measurement of rotorcraft |
| CN107543649A (en) * | 2016-06-26 | 2018-01-05 | 成都凯天电子股份有限公司 | Hot gas deicing stagnation pressure pick-up |
| CN106248139A (en) * | 2016-07-29 | 2016-12-21 | 成都凯天电子股份有限公司 | Atmosphere parameter measurement is popped one's head in |
| CN106768605A (en) * | 2016-12-12 | 2017-05-31 | 太原航空仪表有限公司 | A kind of pressure tester of porous probe |
| CN108362909A (en) * | 2018-01-12 | 2018-08-03 | 太原航空仪表有限公司 | A kind of Multi-functional probe of spherical head |
| CN207763881U (en) * | 2018-01-12 | 2018-08-24 | 太原航空仪表有限公司 | A kind of Multi-functional probe for measuring rotor downwash |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624393A (en) * | 2021-06-22 | 2021-11-09 | 成都凯天电子股份有限公司 | Atmospheric data system and method with rotor downwash effect correction |
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| Publication number | Publication date |
|---|---|
| CN111024298B (en) | 2021-10-08 |
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