CN208297082U - A kind of rear air bridges of jet pipe device for measuring force - Google Patents
A kind of rear air bridges of jet pipe device for measuring force Download PDFInfo
- Publication number
- CN208297082U CN208297082U CN201820309772.7U CN201820309772U CN208297082U CN 208297082 U CN208297082 U CN 208297082U CN 201820309772 U CN201820309772 U CN 201820309772U CN 208297082 U CN208297082 U CN 208297082U
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- CN
- China
- Prior art keywords
- air bridges
- elastic element
- rear air
- jet pipe
- pipe device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model discloses a kind of rear air bridges of jet pipe device for measuring force, including back segment (901), elastic element (902) and leading portion (903)；The elastic element (902) is located between back segment (901) and leading portion (903), and three parts are formed by electron beam welding；The outer diameter and inner diameter of the back segment (901) and elastic element (902) butt end is identical as the outer diameter and inner diameter of elastic element (902) respectively；The outer diameter of the other end is greater than the outer diameter docked with elastic element (902), and internal diameter is greater than the internal diameter with elastic element (902).The rear air bridges are adaptable, and the length of elastic element can be adjusted according to particular condition in use, and the balance of a variety of patterns can be cooperated to use；Can either conveying high-pressure gas, while can ensure that influence of the entire pipeline to balance is small, also want internal force, the temperature effect that can overcome pressure-air.
Description
Technical field
The utility model relates to wind tunnel experiment field, especially a kind of rear air bridges of jet pipe device for measuring force.
Background technique
Air bridges are the core cells of jet pipe device for measuring force, its effect in a device is the not power transmission and completely by gas of ventilating
Stream completely cuts off with balance.Existing air bridges or rigidity are too big, cannot play the effect of ventilation not power transmission；Sealing effect
Difference cannot completely completely cut off balance and air-flow.
Utility model content
The purpose of this utility model is to provide a kind of rear air bridges of jet pipe device for measuring force, and air bridges conveying is high after solution
Calm the anger body when internal force and temperature effect big, that cannot overcome the problems, such as pressure-air are influenced on balance.
To achieve the above object, the rear air bridges of a kind of jet pipe device for measuring force of the utility model, including back segment, elasticity member
Part and leading portion；
Between back segment and leading portion, three parts are formed elastic element by electron beam welding；Back segment and elastic element pair
The outer diameter and inner diameter for connecing end is identical as the outer diameter and inner diameter of elastic element respectively；The outer diameter of the other end is greater than to be docked with elastic element
Outer diameter, internal diameter is greater than internal diameter with elastic element.
Further, it is evenly equipped with threaded hole on the end face of back segment, the threaded connection for back segment and shell.
Further, the groove that circular ring shape is offered on the end face of back segment, for installing red copper sealing ring.
Further, groove number is two, depth 0.7mm, width 2mm.
Further, elastic element is welded by the serpentine high-strength stainless steel wave plate that multiple wall thickness are 0.12mm.
Further, the internal diameter of elastic element is 40mm, outer diameter 60mm, pitch of waves 0.8mm.
Further, uniformly distributed 16 through-holes on the end face of leading portion, for ventilating, strut is bolted.
Further, leading portion offers rectangular recess, the installation of bolt when for rear air bridges and ventilation strut assembly.
Further, rectangular recess depth is 7.5mm, length 16mm.
Further, the internal diameter of leading portion is 37mm, length 20mm.
The utility model has the following beneficial effects:
(1) the rear air bridges are adaptable, and the length of elastic element can be adjusted according to particular condition in use, can cooperate a variety of
The balance of pattern uses；
(2) the rear air bridges can either conveying high-pressure gas, while can ensure that influence of the entire pipeline to balance is small, also
Want can to overcome internal force, the temperature effect of pressure-air；
(3) the rear air bridges are small in size, are installed on the outside wall surface of ventilation strut, save space；
(4) the rear air bridges are matched with preceding air bridges, guarantee that balance carries out high-precision system dynamometry.
Other feature and advantage of the utility model will illustrate in the following description, also, partial from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
Structure specifically indicated in the written description, claims, and drawings is achieved and obtained.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as limitations of the present invention, entire
In attached drawing, identical reference symbol indicates identical component.
Fig. 1 is the main view of the rear air bridges of the utility model；
Fig. 2 is the left view of the rear air bridges of the utility model；
Fig. 3 is the right view of the rear air bridges of the utility model；
Fig. 4 is the rear air bridges use state diagram of the utility model.
Figure label: air bridges before 1- jet pipe, 2- changeover portion, 3- seal head, 4-M10 bolt, 5-, 6- shell, 7- balance,
Air bridges, 10- positioning ring, 11- support device after 8- ventilation strut, 9-；901- back segment, 902- elastic element, 903- leading portion.
Specific embodiment
Specifically describe the preferred embodiment of the utility model with reference to the accompanying drawing, wherein attached drawing constitutes the application one
Point, and be used to illustrate the principles of the present invention together with the embodiments of the present invention.
The utility model discloses a kind of rear air bridges of jet pipe device for measuring force, as shown in Figure 1, including back segment 901, elasticity
903 three parts of element 902 and leading portion, for elastic element 902 between back segment 901 and leading portion 903, three parts pass through electron beam welding
It connects, is straight-through circular hole inside rear air bridges 9, for installing ventilation strut 8.
Back segment 901 is one section of straight-through round tube, and outer surface and inner surface are stairstepping, and ladder is used for and elastic element 902
Docking.It is step-like at this to mean that one end outer diameter and inner diameter that back segment 901 and elastic element 902 are connected to each other is first with elasticity respectively
The outer diameter and inner diameter of part 902 is identical, and for docking with shell 6, one end outer diameter docked with shell 6 is greater than 901 other end of back segment
The outer diameter of the one end docked with elastic element 902, one end internal diameter docked with shell 6 are greater than one docked with elastic element 902
The internal diameter at end.
As shown in Fig. 2, being evenly equipped with the threaded hole of 16 M5 on the end face of back segment 901, it is used for mounting screw, realizes back segment
901 offer circular ring shape on the end face to guarantee the sealing performance after being threadedly coupled with the threaded connection of shell 6 simultaneously
Groove, more preferably, groove number are two, depth 0.7mm, width 2mm, and the groove is for installing red copper sealing
Circle realizes the sealing between back segment 901 and shell 6 by red copper sealing ring.
Elastic element 902 is axial retractility, and elastic element 902 can be axially compressed under the effect of the pressure, in order to
Realize the function, more preferably, elastic element 902 is welded by the serpentine high-strength stainless steel wave plate that 11 wall thickness are 0.12mm
It connects.
In one embodiment of the application, the internal diameter of elastic element 902 is 40mm, outer diameter 60mm, pitch of waves 0.8mm.
The determination of elastic element 902 and wave plate appearance profile size is to analyze to obtain by finite element optimization.
The internal diameter of leading portion 903 is 37mm, and length 20mm, rear air bridges 9 are that cylindrical surface fit system is matched with ventilation strut 8
It closes, that is, ventilation strut 8 is installed on inside rear air bridges, thus the axis and balance 7 of air bridges 9, ventilation strut 8 after guaranteeing
Axis be overlapped.As shown in figure 3,16 through-holes are evenly equipped on the end face of leading portion 903, it is logical for rear air bridges 9 and ventilation strut 8
It crosses and is bolted.Leading portion 903 offers a rectangular recess, 16 when the outgassing column for rear air bridges 9 and ventilation strut 8 assembles
The installation of bolt.Optionally, rectangular recess depth is 7.5mm, length 16mm.
In use, as shown in figure 4, the inlet end of ventilation strut 8 is connected by positioning ring 10 and nut with support device 13,
The outlet side of ventilation strut 8 is removably connect with preceding air bridges 5, there is balance installation cone in preceding air bridges 5 and ventilation strut 8
Hole, before 7 both ends of balance are located in the balance installation taper hole of air bridges 5 and ventilation strut 8, M10 bolt 4 and 7 screw thread of balance
Connection, and it is located at the outside of preceding air bridges 5, the external screw thread of the equivalent section 506 of the leading portion 501 of air bridges 5 before seal head 3 screws in
On, it realizes that seal head 3 is threadedly coupled with preceding air bridges 5, balance 7 is sealed in seal head 3, preceding air bridges 5 and ventilation 8 institute of strut
In the confined space of formation, shell 6 is located at the outside of preceding air bridges 5 and ventilation 8 outlet side of strut, and 6 one end of shell and preceding sky
Air bridge 5 is detachably connected, and 6 other end of shell is connected by rear air bridges 9 with ventilation strut 8, changeover portion 2 and preceding 5 phase of air bridges
Even, so that seal head 3 is located inside changeover portion 2.Changeover portion 2 with jet pipe 1 for being connected.
Specifically, inlet end of 903 sets of the leading portion of rear air bridges 9 in ventilation strut 8, the end face of leading portion 903 and ventilation branch
Bar 8 is fixedly connected by screw, and installation red copper sealing ring therebetween, realizes sealing, and rear air bridges 9 are located inside shell 6,
And the end face of back segment 901 is connected to each other with shell 6, the through-hole of the end cap of shell 6 is passed through using screw, after screw-in after air bridges 9
The threaded hole of 901 end faces of section, realizes the threaded connection of shell and rear air bridges 9.
High pressure gas is passed through in use process, rear air bridges can overcome the problems, such as the internal force and temperature effect of pressure-air,
Influence of the high pressure gas to balance is reduced, so that the measurement result of balance is more acurrate.
In conclusion the utility model provides a kind of rear air bridges of jet pipe device for measuring force, the rear air bridges adaptability
By force, the length of elastic element can be adjusted according to particular condition in use, and the balance of a variety of patterns can be cooperated to use；Height can either be conveyed
It calms the anger body, while can ensure that influence of the entire pipeline to balance is small, also want that the internal force of pressure-air, temperature effect can be overcome
It answers；The rear air bridges are small in size, are installed on the outside wall surface of ventilation strut, save space.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (10)
1. a kind of rear air bridges of jet pipe device for measuring force, which is characterized in that including back segment (901), elastic element (902) and leading portion
(903)；
The elastic element (902) is located between back segment (901) and leading portion (903), and three parts are formed by electron beam welding；Institute
State the outer diameter and inner diameter of back segment (901) and elastic element (902) butt end outer diameter and inner diameter phase with elastic element (902) respectively
Together；The outer diameter of the other end is greater than the outer diameter docked with elastic element (902), and internal diameter is greater than the internal diameter with elastic element (902).
2. the rear air bridges of jet pipe device for measuring force according to claim 1, which is characterized in that the end of the back segment (901)
It is evenly equipped with threaded hole on face, is used for the threaded connection of back segment (901) and shell (6).
3. the rear air bridges of jet pipe device for measuring force according to claim 2, which is characterized in that the end of the back segment (901)
The groove that circular ring shape is offered on face, for installing red copper sealing ring.
4. the rear air bridges of jet pipe device for measuring force according to claim 3, which is characterized in that the groove number is two
It is a, depth 0.7mm, width 2mm.
5. the rear air bridges of jet pipe device for measuring force according to claim 1 to 4, which is characterized in that the elastic element
(902) it is welded by the serpentine high-strength stainless steel wave plate that multiple wall thickness are 0.12mm.
6. the rear air bridges of jet pipe device for measuring force according to claim 5, which is characterized in that the elastic element (902)
Internal diameter be 40mm, outer diameter 60mm, pitch of waves 0.8mm.
7. the rear air bridges of jet pipe device for measuring force according to claim 1 or 6, which is characterized in that the leading portion (903)
Uniformly distributed 16 through-holes, are bolted for strut of ventilating (8) on end face.
8. the rear air bridges of jet pipe device for measuring force according to claim 7, which is characterized in that the leading portion (903) opens up
There is rectangular recess, the installation of bolt when for rear air bridges (9) and ventilation strut (8) assembly.
9. the rear air bridges of jet pipe device for measuring force according to claim 8, which is characterized in that the rectangular recess depth is
7.5mm, length 16mm.
10. the rear air bridges of jet pipe device for measuring force according to claim 8 or claim 9, which is characterized in that the leading portion (903)
Internal diameter be 37mm, length 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820309772.7U CN208297082U (en) | 2018-03-06 | 2018-03-06 | A kind of rear air bridges of jet pipe device for measuring force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820309772.7U CN208297082U (en) | 2018-03-06 | 2018-03-06 | A kind of rear air bridges of jet pipe device for measuring force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208297082U true CN208297082U (en) | 2018-12-28 |
Family
ID=64695680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820309772.7U Expired - Fee Related CN208297082U (en) | 2018-03-06 | 2018-03-06 | A kind of rear air bridges of jet pipe device for measuring force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208297082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432828A (en) * | 2021-05-10 | 2021-09-24 | 中国航空工业集团公司哈尔滨空气动力研究所 | Air bridge device based on annular balance |
| CN117245196A (en) * | 2023-11-16 | 2023-12-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Strain balance electron beam welding structure and welding method thereof |
-
2018
- 2018-03-06 CN CN201820309772.7U patent/CN208297082U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432828A (en) * | 2021-05-10 | 2021-09-24 | 中国航空工业集团公司哈尔滨空气动力研究所 | Air bridge device based on annular balance |
| CN117245196A (en) * | 2023-11-16 | 2023-12-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Strain balance electron beam welding structure and welding method thereof |
| CN117245196B (en) * | 2023-11-16 | 2024-01-23 | 中国空气动力研究与发展中心高速空气动力研究所 | Strain balance electron beam welding structure and welding method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 Termination date: 20200306 |