CN109723568A - Change the nozzle structure of nozzle exit area by sliding type - Google Patents
Change the nozzle structure of nozzle exit area by sliding type Download PDFInfo
- Publication number
- CN109723568A CN109723568A CN201811635067.7A CN201811635067A CN109723568A CN 109723568 A CN109723568 A CN 109723568A CN 201811635067 A CN201811635067 A CN 201811635067A CN 109723568 A CN109723568 A CN 109723568A
- Authority
- CN
- China
- Prior art keywords
- slot
- sliding slot
- shaped sliding
- contraction section
- jet
- 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.)
- Granted
Links
Landscapes
- Nozzles (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
The invention discloses a kind of nozzle structures for changing nozzle exit area by sliding type, including spout body, spout body has nozzle exit, and spout body has jet area contraction section at the position of nozzle exit, jet area contraction section fission is two parts, respectively jet area contraction section leading portion, jet area contraction section back segment；It is connected between jet area contraction section leading portion, jet area contraction section back segment by sliding connection structure.It follows that the adjusting of nozzle exit area can be realized by simply reciprocatingly sliding in the present invention；With simple and reasonable, it is easy to accomplish, flow losses are small, and benefit is evident, practical advantage.
Description
Technical field
The present invention relates to a kind of jet pipe, especially a kind of structure for changing nozzle exit area by sliding type.
Background technique
Since structure is simple, light-weight, and there is preferable performance in the range of blow down ratio is less than 5, contracting nozzle exists
Subsonic flight is only made to have a wide range of applications on the aircraft engine of of short duration supersonic flight.Start to preferably meet
The expanding needs of machine exhaust stream, it is sometimes desirable to which the discharge area of contracting nozzle is adjusted.Currently, common regulative mode is
Make jet area contraction section around the rotation of its front end fulcrum using power drive unit to change endpoint location thereafter, to change jet pipe
Discharge area.In general, jet area contraction section front end can all carry out fillet processing to reduce flow losses.When fillet radius of curvature
When excessive, if continuing using such rotation mode adjustable jet tube discharge area, the inner mold face transition that will cause jet pipe is bad, flowing
Loss increases instead.For adjustable dual-throat nozzle, the adjusting of nozzle exit area is also required to through cavity converging portion
Movement equally exists identical problem to realize.Therefore, it is small that a kind of flow losses are developed, structure is simple and can change jet pipe and goes out
The new construction of open area has stronger engineering application value.
Summary of the invention
In order to overcome the shortcomings in the background art, nozzle exit area is changed by sliding type the present invention provides a kind of
Structure, it is only necessary to by jet area contraction section (or cavity converging portion) simply reciprocatingly slide, nozzle exit area can be realized
It adjusts.
The technical solution used in the present invention is specific as follows:
A kind of nozzle structure changing nozzle exit area by sliding type, including spout body, spout body have
Nozzle exit, and spout body has jet area contraction section at the position of nozzle exit, jet area contraction section fission is two
A part, respectively jet area contraction section leading portion, jet area contraction section back segment；Between jet area contraction section leading portion, jet area contraction section back segment
It is connected by sliding connection structure.
Further, the sliding connection structure, including U-shaped sliding slot, sliding block, guide and limit structure；
Sliding block is placed in U-shaped sliding slot, and sliding block can form prismatic pair with U-shaped sliding slot；
Guide and limit structure opposite between guide-localization U-shaped sliding slot, sliding block can be slided, including the guide card being used cooperatively
Slot, positioning tab.
Further, U-shaped sliding slot includes two side arms, respectively outer webs, inner webs；
Outer webs, inner webs are the arc panel being arranged concentrically, and the length of outer webs is longer than the length of inner webs；
The shape of sliding block is adapted to U-shaped sliding slot, and the sliding block surface adjacent with the outer webs of U-shaped sliding slot is provided with and is externally embedded to
Platform, the surface adjacent with the inner webs of U-shaped sliding slot are provided with embedded platform；
Guiding card slot is arranged in the outer webs of U-shaped sliding slot, and is oriented to the length extending direction of card slot and the length of outer webs
It is consistent to spend extending direction；Positioning tab one end is provided with end lug, after the other end passes through guiding card slot, with the surface for being externally embedded to platform
Connection；
When sliding block moves towards in U-shaped sliding slot, the first extreme position is directed in guiding card slot by guide lug
When, the length of jet area contraction section is minimum, and the area of nozzle exit is maximum, and the inner webs of U-shaped sliding slot are entrenched in embedded platform at this time,
The step surface of the inner webs of U-shaped sliding slot and embedded platform is enabled to be spliced into a smooth interface；The outer webs of U-shaped sliding slot simultaneously
It is entrenched in and is externally embedded in platform, the outer webs of U-shaped sliding slot is enabled to be spliced into a smooth interface with the step surface for being externally embedded to platform；
When sliding block is moved away from U-shaped sliding slot, the second extreme position is directed in guiding card slot by guide lug
When, the length of jet area contraction section is maximum, and the area of nozzle exit is minimum.
Further, U-shaped sliding slot includes two side arms, respectively outer webs, inner webs；
Outer webs, inner webs are the arc panel being arranged concentrically, and the length of outer webs is longer than the length of inner webs, while interior
The end of side arm is arranged to slope structure, has end slope surface；
The shape of sliding block is adapted to U-shaped sliding slot, and the sliding block surface adjacent with the outer webs of U-shaped sliding slot is provided with and is externally embedded to
Platform, the surface adjacent with the inner webs of U-shaped sliding slot have the intrusion slot of indent；
The front end side wall of intrusion slot is arranged to front slide unit, and rear end side wall is arranged to rear portion hook；
The rear portion hook of intrusion slot includes vertical wall surface and hang plate, the slot bottom company of vertical wall surface one end and intrusion slot
It connects, the other end connect to form hook component with hang plate；
The slot bottom of intrusion slot is equipped with a filling-in arc connector by flexible connector；
Both ends of the filling-in arc connector in glide direction, are all provided with and are set to slope structure, respectively front end slope surface, rear end
Slope surface；The rear end slope surface of filling-in arc connector is in always in the rear portion hook of intrusion slot, and after filling-in arc connector
Hipped end face is bonded with the hang plate of rear portion hook；
It, can be convex by being oriented to when sliding block moves in U-shaped sliding slot, and the slot bottom relative to U-shaped sliding slot moves toward one another
Ear is directed to the first extreme position in guiding card slot, and the length of jet area contraction section is minimum at this time, and the area of nozzle exit is maximum,
And the inner wall of jet area contraction section, at the arrangement of slide construction, from energy between the inner webs of U-shaped sliding slot, intrusion slot rear portion hook
Enough it is spliced into a smooth interface；In this sliding process, the front end slope surface of filling-in arc connector is in U-shaped sliding slot inner webs
Under the lifting of end slope surface, flexible connector is squeezed, until filling-in arc connector is entirely located above U-shaped sliding slot inner webs, U-shaped
The end slope surface of sliding slot inner webs is bonded and is aligned with the inclination plate surface of intrusion slot rear portion hook；
It, can be convex by being oriented to when slot bottom back movement when sliding block moves in U-shaped sliding slot, and relative to U-shaped sliding slot
Ear is directed to the second extreme position in guiding card slot, and the length of jet area contraction section is maximum at this time, and the area of nozzle exit is minimum,
The inner wall of jet area contraction section, at the arrangement of slide construction, after the inner webs of U-shaped sliding slot, filling-in arc connector, intrusion slot
A smooth interface is spliced between portion's hook；In this sliding process, the front end slope surface of filling-in arc connector is being detached from U-shaped
After the end slope surface of sliding slot inner webs, filling-in arc connector is under the restoring force effect of flexible connector, before intrusion slot
The guiding of portion's slide unit can be popped up swimmingly away from the slot bottom of intrusion slot, until the front end slope surface and U-shaped of filling-in arc connector
The end slope surface of sliding slot inner webs is bonded and is aligned, the inclination of the rear end slope surface of filling-in arc connector and intrusion slot rear portion hook
Plate is bonded and is aligned.
Further, the closed end of U-shaped sliding slot is wholely set with jet area contraction section leading portion, and sliding block then with jet area contraction section
Back segment is wholely set.
Further, the spout body also has nozzle inlet；Nozzle inlet pass sequentially through jet pipe front fixed section,
Jet area contraction section is connect with nozzle exit；The separation position of jet area contraction section leading portion, jet area contraction section back segment in jet area contraction section
The jet pipe fillet arc section AB for setting place, by the length and folder of the medium straight section of jet pipe front fixed section and the medium straight section of jet area contraction section
Angle limits；Slot is oriented in the outer webs of U-shaped sliding slot, the extreme position of circular arc by jet pipe fillet arc section AB arc length
It determines.
Further, the spout body is dual-throat nozzle, which further includes a venturi；Double larynxs
The jet area contraction section that road jet pipe nestles up nozzle exit setting is dual-throat nozzle cavity converging portion；And dual-throat nozzle cavity is received
Hold back the dual-throat nozzle front fixed section connection between Duan Yuyi venturi by expansion.
Further, guiding card slot is rectangle arcuation hole.
Further, flexible connector is compressed spring.
Further, arc-shaped connector, jet area contraction section leading portion, jet area contraction section back segment, the song in the inner mold face of three
Rate radius is identical, when sliding block is when U-shaped sliding slot is in the second extreme position, jet area contraction section leading portion, arc-shaped connector, jet pipe
Converging portion back segment, the arc section inner mold face of three are spliced to form the inner mold face of jet area contraction section, and mistake at each stitching position jointly
It crosses smooth.
According to above-mentioned technical solution, compared with the existing technology, the present invention has the following beneficial effects:
The maximum place of jet area contraction Duan Qi radian for nestling up nozzle exit setting is separated into two portions by the present invention
Point, it is connected between the two using sliding connection structure；It follows that spray can be realized by simply reciprocatingly sliding in the present invention
The adjusting of pipe discharge area.The configuration of the present invention is simple is reasonable, it is easy to accomplish, flow losses are small, and benefit is evident, practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1 of the present invention；
Fig. 2 is the structural schematic diagram of jet pipe front fixed section in embodiment 1
Fig. 3 is the structural schematic diagram of jet area contraction section in embodiment 1.
Fig. 4 is the structural schematic diagram that jet area contraction section is in another working condition in embodiment 1.
Fig. 5 is the structural schematic diagram that embodiment 1 is applied to dual-throat nozzle.
In Fig. 1 to 5: 1, nozzle inlet；2, nozzle exit；3, jet pipe front fixed section；3-1, guiding card slot；3-2, U-shaped
The outer webs of sliding slot；The inner webs of 3-3, U-shaped sliding slot；4, dual-throat nozzle front fixed section；5, jet area contraction section；5-1, jet pipe
Lug on the outside of converging portion；5-2, embedded platform；5-3, it is externally embedded to platform；6, dual-throat nozzle cavity converging portion；6-1, dual-throat nozzle
The lug of cavity converging portion front end outer side；7, the jet pipe plane of symmetry (binary) or central axis (axial symmetry)；8, dual-throat nozzle
One venturi；
Fig. 6 is the structural schematic diagram of embodiment 2 of the present invention；
Fig. 7 is the structural schematic diagram of jet pipe front fixed section in embodiment 2
Fig. 8 is the structural schematic diagram of jet area contraction section in embodiment 2.
Fig. 9 is the structural schematic diagram for the arc-shaped compression spring assembly connecting in embodiment 2 with jet area contraction section.
Figure 10 is structural schematic diagram when jet pipe is in discharge area maximum rating in embodiment 2.
Figure 11 is the structural schematic diagram that embodiment 2 is applied to dual-throat nozzle.
Figure 12 is the structural schematic diagram when embodiment of the present invention 2 is applied to nozzle exit area maximum in dual-throat nozzle.
Fig. 6 is into Figure 12: 1, nozzle inlet；2, nozzle exit；3, jet pipe front fixed section；3-1, guiding card slot；3-2,U
The outer webs of shape sliding slot；The inner webs of 3-3, U-shaped sliding slot；The end slope surface of 3-4, U-shaped sliding slot inner webs；4, before dual-throat nozzle
Portion's fixed section；5, jet area contraction section；Lug on the outside of 5-1, jet area contraction section；5-2, intrusion slot；5-3, it is externally embedded to platform；5-4, it embeds
The front slide unit of slot；The rear portion hook of 5-5, intrusion slot；6, dual-throat nozzle cavity converging portion；6-1, dual-throat nozzle cavity are received
Hold back the lug of section front end outer side；7, the jet pipe plane of symmetry (binary) or central axis (axial symmetry)；8, a venturi of dual-throat nozzle；
9, the arc-shaped connector being connect with jet area contraction section；The front end slope surface of 9-1, arc-shaped connector；9-2, arc-shaped connector
Rear end slope surface；10, the arc-shaped connector being connect with dual-throat nozzle cavity converging portion；11, compressed spring；12, T point issues
The straightway for being parallel to the jet pipe plane of symmetry or central axis；O, the center of curvature of jet pipe fillet arc section；A, jet pipe (double venturis
Jet pipe) the medium straight section of front fixed section and arc section intersection point (i.e. point of contact)；B, jet area contraction section (dual-throat nozzle cavity convergence
Section) medium straight section and arc section intersection point (i.e. point of contact)；C, the circular arc line elongated segment line of jet pipe fillet arc section AB and O point issue
The straightway for being parallel to the jet pipe plane of symmetry or central axis intersection point；P, jet area contraction section (dual-throat nozzle cavity converging portion)
The endpoint of medium straight section free end；T, in the fixed section of dual-throat nozzle front at venturi position arc section vertex.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.Unless specifically stated otherwise, otherwise in these realities
The positioned opposite of component and step described in example, expression formula and numerical value is applied not limit the scope of the invention.Meanwhile it should be bright
White, for ease of description, the size of various pieces shown in attached drawing is not to draw according to actual proportionate relationship.It is right
The technology known to person of ordinary skill in the relevant, method and apparatus may be not discussed in detail, but in the appropriate case, institute
Stating technology, method and apparatus should be considered as authorizing part of specification.In shown here and discussion all examples, appoint
What occurrence should be construed as merely illustratively, not as limitation.Therefore, the other examples of exemplary embodiment can
With different values.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation).
As shown in Fig. 1 to 12, the nozzle structure of the present invention for changing nozzle exit area by sliding type, including
Spout body, the spout body have jet area contraction section at the position of nozzle exit, and jet area contraction section fission is two
A part, respectively jet area contraction section leading portion, jet area contraction section back segment；Between jet area contraction section leading portion, jet area contraction section back segment
It is connected by sliding connection structure.
The sliding connection structure, including being capable of forming the U-shaped sliding slot of prismatic pair, sliding block and being capable of guide-localization U
With respect to the guide and limit structure of sliding between shape sliding slot, sliding block；Guide and limit structure includes the guiding card slot being used cooperatively, positioning
Lug.
U-shaped sliding slot includes two side arms, and respectively outer webs, inner webs, outer webs, inner webs are the arc being arranged concentrically
Plate, and the length of outer webs is longer than the length of inner webs；Guiding card slot is arranged in the outer webs of U-shaped sliding slot, and is oriented to card slot
Length extending direction it is consistent with the length extending direction of outer webs；The guiding card slot is rectangle arcuation hole；
The shape of sliding block is adapted to U-shaped sliding slot, and the sliding block surface adjacent with the outer webs of U-shaped sliding slot is provided with and is externally embedded to
Platform, and the surface for being externally embedded to platform is equipped with positioning tab；The surface adjacent with the inner webs of U-shaped sliding slot is provided with embedded platform；
When sliding block moves towards in U-shaped sliding slot, the first extreme position is directed in guiding card slot by guide lug
When, the length of jet area contraction section is minimum, and the area of nozzle exit is maximum, and the inner webs of U-shaped sliding slot are entrenched in embedded platform at this time,
The step surface of the inner webs of U-shaped sliding slot and embedded platform is enabled to be spliced into a smooth interface；The outer webs of U-shaped sliding slot simultaneously
It is entrenched in and is externally embedded in platform, the outer webs of U-shaped sliding slot is enabled to be spliced into a smooth interface with the step surface for being externally embedded to platform；
When sliding block is moved away from U-shaped sliding slot, the second extreme position is directed in guiding card slot by guide lug
When, the length of jet area contraction section is maximum, and the area of nozzle exit is minimum.There are a defects for nozzle structure at this time, i.e., in U-shaped
Between the step surface of the embedded platform of the inner webs end and sliding block of sliding slot, the caulking groove of an indent is formed, the presence of this structure,
So that fluid will be assembled herein, to influence the overall performance of jet pipe.
To overcome above-mentioned defect, the present invention changes the embedded platform structure, is set to an intrusion slot, and
One filling-in structure is installed in intrusion slot, specific as follows:
The front end side wall of intrusion slot is arranged to front slide unit, and rear end side wall is arranged to rear portion hook, including vertical plate and
The slot bottom of hang plate, vertical plate one end and intrusion slot connects, and the other end connect to form hook component with hang plate；
Filling-in structure includes filling-in arc connector, and both ends of the filling-in arc connector in glide direction are all provided with and are set to
Slope structure, respectively front end slope surface, rear end slope surface；Filling-in arc connector is connected by flexible connector and the slot bottom of intrusion slot
It connects, and the rear end slope surface of filling-in arc connector is in always in the rear portion hook of intrusion slot, and after filling-in arc connector
Hipped end face is bonded with the hang plate of rear portion hook.
The inner webs end of U-shaped sliding slot is arranged to slope structure；
It, can be convex by being oriented to when sliding block moves in U-shaped sliding slot, and the slot bottom relative to U-shaped sliding slot moves toward one another
Ear is directed to the first extreme position in guiding card slot, and the length of jet area contraction section is minimum at this time, and the area of nozzle exit is maximum；
In this sliding process, the front end slope surface of filling-in arc connector squeezes bullet under the end slope surface lifting of U-shaped sliding slot inner webs
Property connector, until filling-in arc connector is entirely located above U-shaped sliding slot inner webs, the end slope surface of U-shaped sliding slot inner webs
It is bonded with the inclination plate surface of intrusion slot rear portion hook；
Meanwhile in sliding block along U-shaped sliding slot during moving toward one another, the rear portion hook of intrusion slot can be clamped always
The firmly rear end slope surface of filling-in arc connector prevents filling-in arc connector from deviating from, so that the inner wall of jet area contraction section, is being slided
At the arrangement of structure, a smooth interface is spliced between the inner webs of U-shaped sliding slot, intrusion slot rear portion hook；
It, can be convex by being oriented to when slot bottom back movement when sliding block moves in U-shaped sliding slot, and relative to U-shaped sliding slot
Ear is directed to the second extreme position in guiding card slot, and the length of jet area contraction section is maximum at this time, and the area of nozzle exit is minimum；
In this sliding process, the front end slope surface of filling-in arc connector is after the end slope surface for being detached from U-shaped sliding slot inner webs, filling-in arc
Shape connector, can be swimmingly away from interior by the guiding of intrusion slot front slide unit under the restoring force effect of flexible connector
The slot bottom of caulking groove pops up, until the front end slope surface of filling-in arc connector be bonded completely with the end slope surface of U-shaped sliding slot inner webs,
The rear end slope surface of filling-in arc connector is bonded completely with the hang plate of intrusion slot rear portion hook, at this point, jet area contraction section is interior
Wall splices at the arrangement of slide construction between the inner webs of U-shaped sliding slot, filling-in arc connector, intrusion slot rear portion hook
At a smooth interface；
The inner webs of U-shaped sliding slot are entrenched in embedded platform at this time, enable the platforms of the inner webs of U-shaped sliding slot and embedded platform
Terrace is spliced into a smooth interface；The outer webs of U-shaped sliding slot, which are entrenched in, simultaneously is externally embedded in platform, so that the outer webs of U-shaped sliding slot
A smooth interface can be spliced into the step surface for being externally embedded to platform；
It, can be convex by being oriented to when slot bottom back movement when sliding block moves in U-shaped sliding slot, and relative to U-shaped sliding slot
Ear is directed to the second extreme position in guiding card slot, and the length of jet area contraction section is maximum at this time, and the area of nozzle exit is minimum.
Technical concept according to the present invention is applied to common jet pipe, i.e., the described spout body has nozzle inlet, spray
Pipe outlet；Spout body is linked in sequence between nozzle inlet, nozzle exit by jet pipe front fixed section, jet area contraction section.
By technical concept according to the present invention be applied to dual-throat nozzle when, the dual-throat nozzle include a venturi,
Nozzle exit；The jet area contraction section for nestling up nozzle exit setting is dual-throat nozzle cavity converging portion；And dual-throat nozzle is recessed
Pass through the dual-throat nozzle front fixed section connection of expansion between chamber converging portion and a venturi.
Below with reference to attached drawing, two specific embodiments involved in technical solutions according to the invention are explained in detail.
Embodiment 1
As shown in Figs. 1-5, the nozzle structure of the present invention for changing nozzle exit area by sliding type, in jet pipe
Between import and nozzle exit, including sequentially connected jet pipe front fixed section, jet area contraction section, wherein jet area contraction section point
Body is two parts, respectively jet area contraction section leading portion, jet area contraction section back segment；After jet area contraction section leading portion, jet area contraction section
It is connected between section by sliding connection structure；The sliding connection structure, U-shaped sliding slot, cunning including being capable of forming prismatic pair
Block and can between guide-localization U-shaped sliding slot, sliding block with respect to sliding guide and limit structure；Guide and limit structure includes cooperation
Guiding card slot, the positioning tab used, closed end and the jet area contraction section leading portion of U-shaped sliding slot are wholely set, and sliding block and jet pipe are received
It holds back a section back segment to be wholely set, and sliding block is placed in U-shaped sliding slot, and sliding block can reciprocatingly slide in U-shaped sliding slot.The then jet pipe
Converging portion at the position that sliding connection structure is arranged, inner mold face by U-shaped sliding slot inner mold face and sliding block inner mold face overlap joint and
At.
U-shaped sliding slot includes two side arms, and respectively outer webs, inner webs, outer webs, inner webs are the arc being arranged concentrically
Plate, and the length of outer webs is longer than the length of inner webs；Guiding card slot is arranged in the outer webs of U-shaped sliding slot, and is oriented to card slot
Length extending direction it is consistent with the length extending direction of outer webs；The guiding card slot is rectangle arcuation hole；
The shape of sliding block is adapted to U-shaped sliding slot, and the sliding block surface adjacent with the outer webs of U-shaped sliding slot is provided with and is externally embedded to
Platform, and the surface for being externally embedded to platform is equipped with positioning tab；The surface adjacent with the inner webs of U-shaped sliding slot is provided with embedded platform.Positioning
The cooperation of lug and guiding card slot, plays support and position-limiting action.
As shown in Figures 1 to 4, with traditional binary adjustable convergence jet pipe, (axisymmetric nozzle embodiment is similar, no longer superfluous
State) for, the discharge area of jet pipe can be changed in the present invention reciprocatingly sliding in U-shaped sliding slot by adjusting sliding block.When jet pipe is received
The sliding block of section back segment is held back under the power output effect of power drive unit, the arcuation U-shaped sliding slot along jet area contraction section leading portion is inverse
When hour hands slide, end position (i.e. nozzle exit) can change therewith thereafter, and nozzle exit area increases；Conversely, if jet area contraction
The sliding block slid clockwise of section back segment, then nozzle exit area reduces.Meanwhile positioning tab is back and forth slided also along guiding card slot
It is dynamic, and the size for being oriented to card slot defines the extreme position that sliding block reciprocatingly slides.When sliding block slides into position shown in Fig. 4, spray
Transition is smooth between medial type face after pipe converging portion leading portion and jet area contraction section, and flow losses are small.This is simple and reasonable, is easy to
Realize that there is very strong engineering practicability.
Fig. 5 be the present invention be applied to dual-throat nozzle structural schematic diagram, embodiments thereof as example shown in Fig. 1,
Difference is only that: movable part has become cavity converging portion 6 from jet area contraction section 3, in cavity converging portion 6, in cavity converging portion
The sliding block of back segment reciprocatingly slides along the U-shaped arcuation sliding slot of cavity converging portion back segment and changes the discharge area of dual-throat nozzle.
Embodiment 2
As shown in Fig. 6 to 12, this implementation is to provide an improved particular technique side for deficiency existing for embodiment 1
Case.Its difference from Example 1 is, has filled and led up in embodiment 1, when sliding block is in the second extreme position, jet area contraction section
Length it is maximum, when the area minimum of nozzle exit, nozzle structure is in the inner webs end of U-shaped sliding slot and the embedded platform of sliding block
Between step surface, form the caulking groove of an indent so that the inner mold face of the inner webs of U-shaped sliding slot and the inner mold face of sliding block it
Between, it is connected by the inner mold face of a special arc-shaped connector, splicing can integrally smoothly transit at stitching position
Complete inner mold face.It is specific as follows:
The present embodiment changes embedded platform structure described in embodiment 1, is set to an intrusion slot, and in intrusion slot
One filling-in structure of middle installation, specific as follows:
The front end side wall of intrusion slot is arranged to front slide unit, and rear end side wall is arranged to rear portion hook, including vertical plate and
The slot bottom of hang plate, vertical plate one end and intrusion slot connects, and the other end connect to form hook component with hang plate；
Filling-in structure includes filling-in arc connector, and both ends of the filling-in arc connector in glide direction are all provided with and are set to
Slope structure, respectively front end slope surface, rear end slope surface；Filling-in arc connector is connected by flexible connector and the slot bottom of intrusion slot
It connects, and the rear end slope surface of filling-in arc connector is in always in the rear portion hook of intrusion slot, and after filling-in arc connector
Hipped end face is bonded with the hang plate of rear portion hook.Flexible connector is compressed spring, and compressed spring both ends are separately fixed at circular arc
On shape connector and the slot bottom (jet area contraction section) of intrusion slot.
The inner webs end of U-shaped sliding slot is arranged to slope structure；
It, can be convex by being oriented to when sliding block moves in U-shaped sliding slot, and the slot bottom relative to U-shaped sliding slot moves toward one another
Ear is directed to the first extreme position in guiding card slot, and the length of jet area contraction section is minimum at this time, and the area of nozzle exit is maximum；
In this sliding process, the front end slope surface of filling-in arc connector squeezes bullet under the end slope surface lifting of U-shaped sliding slot inner webs
Property connector, until filling-in arc connector is entirely located above U-shaped sliding slot inner webs, the end slope surface of U-shaped sliding slot inner webs
It is bonded with the inclination plate surface of intrusion slot rear portion hook；
Meanwhile in sliding block along U-shaped sliding slot during moving toward one another, the rear portion hook of intrusion slot can be clamped always
The rear end slope surface of filling-in arc connector prevents filling-in arc connector from deviating from, so that the inner wall of jet area contraction section, is tied in sliding
At the arrangement of structure, a smooth interface is spliced between the inner webs of U-shaped sliding slot, intrusion slot rear portion hook.
As shown in Fig. 6 to Figure 11, with traditional binary adjustable convergence jet pipe, (axisymmetric nozzle embodiment is similar, no longer
Repeat) for, the present invention can change the discharge area of jet pipe by sliding block reciprocatingly sliding in U-shaped arc-shaped sliding slot.When
Sliding block is under the power output effect of power drive unit, and when sliding counterclockwise along U-shaped arc-shaped sliding slot, arc-shaped connector is same
When by intrusion slot leading inside gap (front slide unit) protrusion and intrusion slot rear inside arc section (rear portion hook)
Squeezing action so that compressed spring is shunk, and is gradually adjacent to slot bottom (the intrusion slot setting of intrusion slot under the collective effect of three
The arc section inner mold face of jet area contraction section at position) and it is followed to slide counterclockwise.In addition, the spray of mark nozzle exit position
The position of the endpoint P of the medium straight section free end of pipe converging portion also changes simultaneously, so that the area of nozzle exit increases.Work as spray
When pipe converging portion moves to position shown in Figure 10, the area of nozzle exit reaches maximum.At this point, the pressure being connect with jet area contraction section
Contracting spring assembly (arc-shaped connector and compressed spring) is shunk in intrusion slot completely, and jet pipe fillet arc section AB is only by spraying
The arc section of pipe converging portion front end and the arc section composition of jet pipe front fixed section rear inside, the radius of curvature in the two inner mold face
Identical, junction transition is smooth；Conversely, if jet area contraction section band movable slider slid clockwise, the area of nozzle exit reduce,
When jet area contraction section moves to position shown in Fig. 6, the area of nozzle exit reaches minimum.At this point, compressed spring is no longer influenced by
The extruding of arc-shaped connector and restore former length, and generate restoring force and pop up arc-shaped connector.Jet pipe is connected in sliding block and is tied
The inner mold face of structure installed position, by jet area contraction section leading portion, arc-shaped connector and jet area contraction section back segment are formed, in three
The radius of curvature in type face is identical, and junction transition is smooth.
While sliding block reciprocatingly slides along U-shaped arc-shaped sliding slot, positioning tab reciprocatingly slides also along guiding card slot,
And the size for being oriented to card slot defines the extreme position that positioning tab reciprocatingly slides.In addition, guarantee jet pipe front fixed section and
Exist always in jet area contraction section etc. under the premise of straight sections, jet area contraction section leading portion, jet area contraction section back segment are in jet area contraction section
On spaced-apart locations at jet pipe fillet arc section AB, by the medium straight section of jet pipe front fixed section and the medium straight section of jet area contraction section
Length and angle limit.
Slot is oriented in the outer webs of U-shaped sliding slot, the extreme position of circular arc by jet pipe fillet arc section AB arc
It is long to determine, two terminal As and B without departing from jet pipe fillet arc section AB.In addition, in jet area contraction section slid clockwise process
In, B point is not across straightway OC, to guarantee the endpoint P of the medium straight section free end of jet area contraction section always in C point rear portion, jet pipe
It always is the configuration shunk from nozzle inlet to nozzle exit forward direction.
Figure 11 and Figure 12 gives the present invention and is applied to jet pipe in the structural schematic diagram and dual-throat nozzle of dual-throat nozzle
Structural schematic diagram when discharge area maximum, as example shown in Fig. 6 and Figure 10, difference is embodiments thereof: in double larynxs
During road jet pipe cavity converging portion slid clockwise, B point guarantees dual-throat nozzle cavity converging portion not across straightway OC
The endpoint P of medium straight section free end is always at C point rear portion, and P point is not across venturi position in the fixed section of dual-throat nozzle front
The straightway for being parallel to the jet pipe plane of symmetry or central axis that the vertex T of the place's of setting arc section is issued, to guarantee the face of nozzle exit
Product is consistently greater than or the area of the venturi equal to dual-throat nozzle, not change the characteristic of jet pipe " double venturis ".
Claims (10)
1. a kind of nozzle structure for changing nozzle exit area by sliding type, including spout body, spout body have spray
Pipe outlet, and spout body has jet area contraction section at the position of nozzle exit, which is characterized in that jet area contraction section
Fission is two parts, respectively jet area contraction section leading portion, jet area contraction section back segment；Jet area contraction section leading portion, jet area contraction section
It is connected between back segment by sliding connection structure.
2. the nozzle structure according to claim 1 for changing nozzle exit area by sliding type, which is characterized in that institute
The sliding connection structure stated, including U-shaped sliding slot, sliding block, guide and limit structure；
Sliding block is placed in U-shaped sliding slot, and sliding block can form prismatic pair with U-shaped sliding slot；
Guide and limit structure can opposite sliding between guide-localization U-shaped sliding slot, sliding block, including be used cooperatively guiding card slot,
Positioning tab.
3. the nozzle structure according to claim 1 for changing nozzle exit area by sliding type, which is characterized in that U
Shape sliding slot includes two side arms, respectively outer webs, inner webs；
Outer webs, inner webs are the arc panel being arranged concentrically, and the length of outer webs is longer than the length of inner webs；
The shape of sliding block is adapted to U-shaped sliding slot, and the sliding block surface adjacent with the outer webs of U-shaped sliding slot is provided with and is externally embedded to platform, with U
The adjacent surface of the inner webs of shape sliding slot is provided with embedded platform；
Guiding card slot is arranged in the outer webs of U-shaped sliding slot, and the length extending direction of guiding card slot and the length of outer webs are prolonged
It is consistent to stretch direction；Positioning tab one end is provided with end lug, after the other end passes through guiding card slot, connects with the surface for being externally embedded to platform
It connects；
When sliding block moves towards in U-shaped sliding slot, is directed to the first extreme position in being oriented to card slot by guide lug, spray
The length of pipe converging portion is minimum, and the area of nozzle exit is maximum, and the inner webs of U-shaped sliding slot are entrenched in embedded platform at this time, so that U
The inner webs of shape sliding slot can be spliced into a smooth interface with the step surface of embedded platform；The outer webs of U-shaped sliding slot are chimeric simultaneously
In being externally embedded to platform, the outer webs of U-shaped sliding slot is enabled to be spliced into a smooth interface with the step surface for being externally embedded to platform；
When sliding block is moved away from U-shaped sliding slot, is directed to the second extreme position in being oriented to card slot by guide lug, spray
The length of pipe converging portion is maximum, and the area of nozzle exit is minimum.
4. the nozzle structure according to claim 1 for changing nozzle exit area by sliding type, which is characterized in that U
Shape sliding slot includes two side arms, respectively outer webs, inner webs；
Outer webs, inner webs are the arc panel being arranged concentrically, and the length of outer webs is longer than the length of inner webs, while inner webs
End be arranged to slope structure, have end slope surface；
The shape of sliding block is adapted to U-shaped sliding slot, and the sliding block surface adjacent with the outer webs of U-shaped sliding slot is provided with and is externally embedded to platform, with U
The adjacent surface of the inner webs of shape sliding slot has the intrusion slot of indent；
The front end side wall of intrusion slot is arranged to front slide unit, and rear end side wall is arranged to rear portion hook；
The rear portion hook of intrusion slot includes vertical wall surface and hang plate, and the slot bottom of vertical wall surface one end and intrusion slot connects, separately
One end connect to form hook component with hang plate；
The slot bottom of intrusion slot is equipped with a filling-in arc connector by flexible connector；
Both ends of the filling-in arc connector in glide direction, are all provided with and are set to slope structure, respectively front end slope surface, rear hipped end
Face；
The rear end slope surface of filling-in arc connector is in always in the rear portion hook of intrusion slot, and the rear end of filling-in arc connector
Slope surface is bonded with the hang plate of rear portion hook；
When sliding block moves in U-shaped sliding slot, and the slot bottom relative to U-shaped sliding slot moves toward one another, can be existed by guide lug
It is directed to the first extreme position in guiding card slot, the length of jet area contraction section is minimum at this time, and the area of nozzle exit is maximum, and sprays
The inner wall of pipe converging portion can spell at the arrangement of slide construction between the inner webs of U-shaped sliding slot, intrusion slot rear portion hook
It is connected into a smooth interface；In this sliding process, the front end slope surface of filling-in arc connector is in the end of U-shaped sliding slot inner webs
Under slope surface lifting, flexible connector is squeezed, until filling-in arc connector is entirely located above U-shaped sliding slot inner webs, U-shaped sliding slot
The end slope surface of inner webs is bonded and is aligned with the inclination plate surface of intrusion slot rear portion hook；
When slot bottom back movement when sliding block moves in U-shaped sliding slot, and relative to U-shaped sliding slot, it can be existed by guide lug
It is directed to the second extreme position in guiding card slot, the length of jet area contraction section is maximum at this time, and the area of nozzle exit is minimum, jet pipe
The inner wall of converging portion, at the arrangement of slide construction, from the inner webs of U-shaped sliding slot, filling-in arc connector, intrusion slot rear portion card
A smooth interface is spliced between hook；In this sliding process, the front end slope surface of filling-in arc connector is being detached from U-shaped sliding slot
After the end slope surface of inner webs, filling-in arc connector is sliding by intrusion slot front under the restoring force effect of flexible connector
The guiding of platform can be popped up swimmingly away from the slot bottom of intrusion slot, until the front end slope surface and U-shaped sliding slot of filling-in arc connector
The end slope surface of inner webs is bonded and is aligned, the rear end slope surface of filling-in arc connector and the hang plate of intrusion slot rear portion hook are pasted
Merge alignment.
5. the nozzle structure according to claim 3 or 4 for changing nozzle exit area by sliding type, feature exist
In closed end and the jet area contraction section leading portion of U-shaped sliding slot are wholely set, and sliding block is then wholely set with jet area contraction section back segment.
6. the nozzle structure according to claim 5 for changing nozzle exit area by sliding type, which is characterized in that institute
The spout body stated also has nozzle inlet；Nozzle inlet passes sequentially through jet pipe front fixed section, jet area contraction section and jet pipe and goes out
Mouth connection；The jet pipe fillet circular arc of jet area contraction section leading portion, jet area contraction section back segment at the spaced-apart locations in jet area contraction section
Section AB, is limited by the medium straight section of jet pipe front fixed section and the length and angle of the medium straight section of jet area contraction section；It is oriented to slot
In in the outer webs of U-shaped sliding slot, the extreme position of circular arc is determined by the arc length of jet pipe fillet arc section AB.
7. the nozzle structure according to claim 5 for changing nozzle exit area by sliding type, which is characterized in that institute
The spout body stated is dual-throat nozzle, which further includes a venturi；The dual-throat nozzle nestles up jet pipe and goes out
The jet area contraction section of mouth setting is dual-throat nozzle cavity converging portion；And lead between dual-throat nozzle cavity converging portion and a venturi
Cross the dual-throat nozzle front fixed section connection of expansion.
8. the nozzle structure according to claim 3 or 4 for changing nozzle exit area by sliding type, feature exist
In guiding card slot is rectangle arcuation hole.
9. the nozzle structure according to claim 4 for changing nozzle exit area by sliding type, which is characterized in that bullet
Property connector be compressed spring.
10. the nozzle structure according to claim 4 for changing nozzle exit area by sliding type, which is characterized in that
Arc-shaped connector, jet area contraction section leading portion, jet area contraction section back segment, the radius of curvature in the inner mold face of three is identical, works as sliding block
When U-shaped sliding slot is in the second extreme position, jet area contraction section leading portion, arc-shaped connector, jet area contraction section back segment, three's
Arc section inner mold face is spliced to form the inner mold face of jet area contraction section jointly, and transition is smooth at each stitching position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635067.7A CN109723568B (en) | 2018-12-29 | 2018-12-29 | Nozzle structure for changing nozzle outlet area by sliding mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635067.7A CN109723568B (en) | 2018-12-29 | 2018-12-29 | Nozzle structure for changing nozzle outlet area by sliding mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109723568A true CN109723568A (en) | 2019-05-07 |
| CN109723568B CN109723568B (en) | 2022-01-18 |
Family
ID=66296741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811635067.7A Active CN109723568B (en) | 2018-12-29 | 2018-12-29 | Nozzle structure for changing nozzle outlet area by sliding mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109723568B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250853A (en) * | 2021-06-10 | 2021-08-13 | 华中科技大学 | Vectoring nozzle and control method thereof |
| CN114776462A (en) * | 2022-04-14 | 2022-07-22 | 中国航发沈阳发动机研究所 | Throat-adjustable unilateral expansion spray pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912172A (en) * | 1971-05-07 | 1975-10-14 | Thiokol Corp | Self actuated pressure lubricated swivelled nozzle for rocket motors |
| US5853148A (en) * | 1995-12-19 | 1998-12-29 | Societe De Construction Des Avions Hurel-Dubois | Thrust reverser with adjustable section nozzle for aircraft jet engine |
| US20060150612A1 (en) * | 2005-01-12 | 2006-07-13 | Honeywell International Inc. | Thrust vector control |
| CN204113489U (en) * | 2014-08-29 | 2015-01-21 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of structure preventing sphere contracting nozzle sphere adjustment sheet clamping stagnation |
| CN108104971A (en) * | 2017-12-07 | 2018-06-01 | 中国航发沈阳发动机研究所 | A kind of two-dimensional nozzle with pitching driftage function and the aircraft with it |
-
2018
- 2018-12-29 CN CN201811635067.7A patent/CN109723568B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912172A (en) * | 1971-05-07 | 1975-10-14 | Thiokol Corp | Self actuated pressure lubricated swivelled nozzle for rocket motors |
| US5853148A (en) * | 1995-12-19 | 1998-12-29 | Societe De Construction Des Avions Hurel-Dubois | Thrust reverser with adjustable section nozzle for aircraft jet engine |
| US20060150612A1 (en) * | 2005-01-12 | 2006-07-13 | Honeywell International Inc. | Thrust vector control |
| CN204113489U (en) * | 2014-08-29 | 2015-01-21 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of structure preventing sphere contracting nozzle sphere adjustment sheet clamping stagnation |
| CN108104971A (en) * | 2017-12-07 | 2018-06-01 | 中国航发沈阳发动机研究所 | A kind of two-dimensional nozzle with pitching driftage function and the aircraft with it |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250853A (en) * | 2021-06-10 | 2021-08-13 | 华中科技大学 | Vectoring nozzle and control method thereof |
| CN113250853B (en) * | 2021-06-10 | 2022-06-14 | 华中科技大学 | Vectoring nozzle and control method thereof |
| CN114776462A (en) * | 2022-04-14 | 2022-07-22 | 中国航发沈阳发动机研究所 | Throat-adjustable unilateral expansion spray pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109723568B (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106050469B (en) | A kind of nozzle structure and adjusting method realizing throat area and adjusting with thrust vectoring | |
| CN109723568A (en) | Change the nozzle structure of nozzle exit area by sliding type | |
| CN105443268B (en) | Passive pair of venturi fluidic vectoring nozzle of bypass type with flow regulating function and control method | |
| CN102705081B (en) | Binary hypersonic variable geometrical inlet channel, design method and work mode | |
| CN109723570A (en) | Venturi offset fluidic vectoring nozzle with asymmetric rear figure face | |
| CN105855084B (en) | Adjustable spraying apparatus | |
| CA3087472A1 (en) | A throat shifting type fluidic vectoring nozzle based on translational motion for short-distance takeoff and landing | |
| CN106837600A (en) | Venturi offset fluidic vectoring nozzle based on fluidic oscillator principle | |
| CN109827620A (en) | A kind of Venturi meter | |
| CN117123434B (en) | Automatic pressure and flow automatic regulating apparatus of automatic dispensing detection equipment | |
| CN110985231B (en) | Closed-loop self-adaptive adjusting ejector and rocket nozzle | |
| CN110645118B (en) | Equal-flow solid attitude control thrust device and design method | |
| CN102678602B (en) | Variable throat device for air compressor | |
| CN113188747B (en) | Variable mach number supersonic wind tunnel | |
| CN205650981U (en) | Welding cooling adjusting device | |
| CN107218154B (en) | The flow adjustable throat offset fluidic vectoring nozzle and its control method of mechanical-assisted | |
| CN208764501U (en) | A kind of convenient PE pipe of docking | |
| CN209570223U (en) | A kind of Venturi meter | |
| CN107387260B (en) | The design method of the passive fluidic vectoring nozzle of bypass type and its slipping switch with slipping switch | |
| CN208542400U (en) | Nozzle and spray head with same | |
| CN208317721U (en) | A kind of irrigation is continuously fetched water soft band with slidingtype | |
| CN207922230U (en) | A kind of High-efficiency Gas air distribution device | |
| CN216479508U (en) | Joint formula bamboo joint pipa bulb | |
| CN219220711U (en) | S pipe distributing valve, pumping device and concrete pumping equipment | |
| CN209430375U (en) | A kind of air-returning pipe component and compressor unit system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |