CN108956082B - A kind of rectangular nozzle - Google Patents
A kind of rectangular nozzle Download PDFInfo
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- CN108956082B CN108956082B CN201811100689.XA CN201811100689A CN108956082B CN 108956082 B CN108956082 B CN 108956082B CN 201811100689 A CN201811100689 A CN 201811100689A CN 108956082 B CN108956082 B CN 108956082B
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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
- G01M9/02—Wind tunnels
- G01M9/04—Details
Abstract
The present invention relates to a kind of rectangular nozzles.The rectangular nozzle includes group section and nozzle section, and the inner passage of the group section is connected to the inner passage of the nozzle section；Cross section of the inner passage of the group section from arrival end to outlet end is by rounded transitional to square, cross section of the inner passage of the nozzle section from arrival end to outlet end forms the inner passage that a cross section is gradually transitted to the rectangular rectangular nozzle by circle by square to rectangle.This invention simplifies the structures of rectangular nozzle, it is ensured that high-temperature gas section is smoothly converted to rectangle by circle, generates the plasma jet of the rectangular section of stable and uniform.
Description
Technical field
The invention belongs to wind-tunnel technique field more particularly to a kind of rectangular nozzles.
Background technique
Plasma wind tunnel is used for the ground experiment research work of spacecraft thermo-resistance material and structure, general using electricity
The mode of arc or inductively coupled discharge generates plasma.Since the structure of upstream plasma generator is generally axial symmetry
Type, therefore axisymmetric nozzle switching plasma generator is more convenient.And in certain applications, it needs upstream plasma
The cylindrically symmetry plasma jet stream of body generator switchs to rectangle by circle and is adapted with upstream device, accordingly, it is desirable to provide a kind of
The jet pipe of rectangle plasma jet can be generated.
Summary of the invention
The object of the present invention is to provide a kind of rectangular nozzles that can generate rectangle plasma jet, to solve the prior art
Present in technical problem.
To achieve the goals above, the present invention provides a kind of rectangular nozzle, including group section and nozzle section, the switchings
The inner passage of section is connected to the inner passage of the nozzle section；The inner passage of the group section is from arrival end to outlet end
Cross section is by rounded transitional to square, and cross section of the inner passage of the nozzle section from arrival end to outlet end is by square
Rectangle is transitted to, the inner passage that a cross section is gradually transitted to the rectangular rectangular nozzle by circle is formed.
Preferably, the group section includes the first group section and the second group section, the inner passage of first group section
In conical structure, and the circumferentially-spaced of the conduit wall of first group section rear end is equipped with multiple notch, and described second turn
The cross section for connecing the inner passage of section is square, and the conduit wall of second group section front end is equipped with and multiple notch
The interconnecting piece to match is cooperated between first group section and second group section by the notch and the interconnecting piece
Connection is connected to the inner passage of first group section and the second group section.
Preferably, the nozzle section includes outside nozzle section inner casing and the nozzle section being arranged on the outside of the nozzle section inner casing
Shell；There is the first gap, first gap is used for Cooling Water stream between the nozzle section shell and the nozzle section inner casing
It is logical；A plurality of first reinforcing rib and a plurality of second is staggeredly arranged at intervals in each side wall surface of the nozzle section inner casing to reinforce
Muscle, first reinforcing rib are connect with one end of the nozzle section inner casing, second reinforcing rib and the nozzle section inner casing
Other end connection, so that foring the independent cooling water that a Cooling Water passes through in each side wall surface of the nozzle section inner casing
Unit；A nozzle section water inlet and a nozzle section water outlet are provided in each side wall surface of the nozzle section shell,
The nozzle section water inlet and the nozzle section water outlet are connected to the independent cooling water unit, make cooling water from the spray
Pipeline section water inlet enters, and flows out after flowing through the independent cooling water unit from the nozzle section water outlet.
Preferably, the nozzle section water inlet and the nozzle section water outlet are located at nozzle section shell one end
Two sides.
Preferably, the inner wall of the nozzle section shell is connect with first reinforcing rib and second reinforcing rib.
Preferably, pass through flanged joint between the group section and the nozzle section；The group section and the nozzle section
The periphery of the one end being connected is respectively arranged with group section flange and nozzle section flange；The inside of the nozzle section flange is circumferentially
Intake tunnel and four exhalant canals there are four setting staggeredly are spaced apart, the water inlet end of the intake tunnel with cooling water source to connect
Logical, the water outlet of the intake tunnel is connect with the nozzle section water inlet, the water inlet end of the exhalant canal and the jet pipe
Section water outlet connection, the water outlet of the exhalant canal is for cooling water to be discharged.
Preferably, the nozzle section includes the first nozzle section and the second nozzle section, and the both ends of first nozzle section are distinguished
Connect group section and the second nozzle section, the cross-sectional area of the inner passage of first nozzle section is from being connected with the group section
One end to one end gradual change for being connected with second nozzle section.
Preferably, the group section includes outside group section inner casing and the group section being arranged on the outside of the group section inner casing
Shell；There is the second gap between the group section shell and the group section inner casing, circulate for Cooling Water；The group section
The two sides of shell are respectively arranged with group section water inlet and group section water outlet, make cooling water from the group section water inlet into
Enter, and is flowed out after flowing through second gap from the group section water outlet.
Preferably, the group section shell is set close to the side of the group section inner casing is parallel with the group section inner casing
It sets, so that second gap is wide.
Preferably, the thickness of the group section inner casing is not more than 5mm；And/or the width in second gap is 3~5mm.
The present invention at least have compared with prior art it is following the utility model has the advantages that
(1) the inner profile advantages of simple of the rectangular nozzle in the present invention, by group section first by plasma jet
Square section is transitioned by circular cross-section, then rectangular section is converted to by square section through nozzle section, can guarantee that circle is penetrated
Flow section relatively smoothly switchs to rectangular jet section, can effectively solve high-temperature gas section by circle and be converted to asking for rectangle
Topic, to form rectangle plasma jet.
(2) in certain preferred embodiments of the invention, the group section is by the first group section similar to conical structure
It is connected smoothly with the second group section of the similar long barrel structure of square, group section is structurally reasonable, greatly simplifies
The structure of rectangular nozzle, the rectangle compared with inner profile in the prior art is the rectangular nozzle of complicated curved surface, in the present invention
The structure of jet pipe is obviously simple, can be substantially reduced the difficulty of processing and cost of manufacture of rectangular nozzle.
(3) rectangular nozzle in certain preferred embodiments of the present invention has reasonable water-cooling structure, with existing plasma
Water-cooling structure used by jet pipe in body wind-tunnel is compared, and is staggeredly arranged at intervals in each side wall surface of nozzle section inner casing
A plurality of first reinforcing rib and a plurality of second reinforcing rib, first reinforcing rib is connect with one end of the nozzle section inner casing, described
Second reinforcing rib is connect with the other end of the nozzle section inner casing, so that foring in each side wall surface of the nozzle section inner casing
The independent cooling water unit that one Cooling Water passes through, thus by the first gap between nozzle section shell and nozzle section inner casing point
Four independent cooling water units have been divided into, have guaranteed that cooling water flow quickly flows in each independent cooling water unit simultaneously,
Each section of the nozzle section is set equably to be cooled；In addition, in each independent cooling water unit, cooling water from
The nozzle section water inlet enters, and cooling water can be flowed according to set direction without forming dead water region, and is flowed through
It could be flowed out from the nozzle section water outlet after the independent cooling water unit, improve the utilization rate of cooling water, guarantee cooling
Water flows through range, avoids hot-spot, and then improves the cooling efficiency of rectangular nozzle, enables jet pipe under high temperature environment
Long-time steady operation ensure that the safety of rectangular nozzle self structure in the case where high-temperature gas is passed through.
(4) removable by flange between the group section and the nozzle section in some preferred embodiments of the present invention
Connection is unloaded, consequently facilitating maintenance and replacement have the nozzle section of different outlet sizes, greatly having saved cost and having improved makes
With efficiency in the process.
Detailed description of the invention
Attached drawing of the present invention only provides for the purpose of illustration, in figure the ratio Yu quantity of each component not necessarily with actual product one
It causes.
Fig. 1 is the schematic perspective view of a specific embodiment of rectangular nozzle in the present invention.
Fig. 2 is the decomposition diagram of Fig. 1.
Fig. 3 is the front view for the group section inner casing that Fig. 2 includes.
Fig. 4 is the left view for the group section inner casing that Fig. 2 includes.
Fig. 5 is the right view for the group section shell that Fig. 2 includes.
Fig. 6 is the cross-sectional view of A-A in Fig. 5.
Fig. 7 is the structural schematic diagram of corresponding independent cooling water unit on the upside wall surface of nozzle section inner casing in Fig. 2.
In figure: 1: group section；11: group section shell；12: group section inner casing；121: the first group sections；122: the second switchings
Section；13: group section flange；131: first through hole；14: group section forward flange；15: group section water inlet；16: group section water outlet
Mouthful；2: nozzle section；21: nozzle section shell；22: nozzle section inner casing；23: the first reinforcing ribs；24: the second reinforcing ribs；25: nozzle section
Water inlet；26: nozzle section water outlet；27: nozzle section flange；271: intake tunnel；272: exhalant canal.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, is clearly and completely described technical solution of the present invention, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made is worked, shall fall within the protection scope of the present invention.
The present invention provides a kind of rectangular nozzle, Fig. 1 is the vertical of a specific embodiment of rectangular nozzle in the present invention
Body structural schematic diagram, Fig. 2 are the decomposition diagrams of Fig. 1, and Fig. 3 is the front view for the group section inner casing that Fig. 2 includes, and Fig. 4 is Fig. 2 packet
The left view of the group section inner casing included, Fig. 5 are the right views for the group section shell that Fig. 2 includes, and Fig. 6 is the section view of A-A in Fig. 5
Figure, Fig. 7 is the structural schematic diagram of corresponding independent cooling water unit on the upside wall surface of nozzle section inner casing.
In the present invention, the rectangular nozzle includes group section 1 and nozzle section 2, the inner passage of the group section 1 and institute
State the inner passage connection of nozzle section 2, as depicted in figs. 1 and 2, the outlet end of the inner passage of the group section and the jet pipe
The arrival end connection of the inner passage of section；Cross section of the inner passage of the group section 1 from arrival end to outlet end is by circle
Transit to square, cross section of the inner passage of the nozzle section 2 from arrival end to outlet end is by square to rectangular
Shape forms the inner passage that a cross section is gradually transitted to the rectangular rectangular nozzle by circle.In the present invention, horizontal
Section refers to opening the obtained cutting plane of object perpendicular to axis cutting；In the present invention, the inside of the rectangular nozzle is logical
Cross section of the road from arrival end to outlet end gradually transits to rectangle by circle；In the present invention, the inside of the group section
The arrival end in channel and outlet end refer respectively to left end (front end) and the right end (rear end) of Fig. 1 and group section shown in Fig. 2, institute
The arrival end and outlet end for stating the inner passage of nozzle section refer respectively to the left end (front end) of Fig. 1 and nozzle section shown in Fig. 2
With right end (rear end), the arrival end of the inner passage of the rectangular nozzle and outlet end refer respectively to Fig. 1 and square shown in Fig. 2
The left end (front end) of shape jet pipe and right end (rear end).
In the present invention, the inner profile advantages of simple of the rectangular nozzle is first penetrated plasma by group section
Stream is transitioned into square section by circular cross-section, then is converted to rectangular section by square section through nozzle section, can guarantee circle
Jet area relatively smoothly switchs to rectangular jet section, can effectively solve high-temperature gas section by circle and be converted to rectangle
Problem, to form rectangle plasma jet.
According to some preferred embodiments, the group section 1 includes the first group section 121 and the second group section 122, institute
The inner passage of the first group section 121 is stated in conical structure, and 121 rear end of the first group section (as shown in Figure 2 first
The right end of group section) conduit wall it is circumferentially-spaced be equipped with multiple notch, the cross of the inner passage of second group section 122
Section is square, and the conduit wall of 122 front end of the second group section (left end of the second group section as shown in Figure 2) is equipped with
The interconnecting piece to match with multiple notch, between first group section and second group section by the notch and
The interconnecting piece is cooperatively connected, as shown in Fig. 2, connecting the inner passage of first group section 121 and the second group section 122
It is logical.It is formed in the present invention, it is preferred to be seamlessly transitted between first group section and the inner passage of second group section
The inner passage of the group section；In the present invention, due to the conduit wall and described second of 121 rear end of the first group section
Multiple notch and interconnecting piece are offered respectively on the conduit wall of 122 front end of group section, so that the similar circle of first group section 121
Pyramidal structure, the similar long barrel structure of square of second group section 122.In the present invention, the group section is preferably by class
Be connected smoothly like the first group section 121 of conical structure and the second group section 122 of the similar long barrel structure of square and
At group section is reasonable in design, greatly simplifies the structure of rectangular nozzle, is complicated with inner profile in the prior art
The rectangular nozzle of curved surface is compared, and the structure of the rectangular nozzle in the present invention is obviously simple, can be substantially reduced the processing of rectangular nozzle
Difficulty and cost of manufacture.
According to some preferred embodiments, at interval of 90 ° in the circumferential direction of the conduit wall of 121 rear end of the first group section
One notch is set.
According to some preferred embodiments, first group section 121 and class of the group section 1 through similar conical structure
The second group section 122 like the long barrel structure of square is welded or unified casting and forming forms.
According to some preferred embodiments, the nozzle section 2 includes nozzle section inner casing 22 and is arranged in the nozzle section
The nozzle section shell 21 in 22 outside of inner casing；There is the first gap between the nozzle section shell 21 and the nozzle section inner casing 22,
It circulates for Cooling Water in first gap；It is staggeredly arranged at intervals in each side wall surface of the nozzle section inner casing 22 more
The first reinforcing rib of item 23 and a plurality of second reinforcing rib 24, for example, as shown in Figure 2 and Figure 7, first reinforcing rib 23 and the spray
One end of pipeline section inner casing 22 connects, and second reinforcing rib 24 is connect with the other end of the nozzle section inner casing 22, so that described
The independent cooling water unit that a Cooling Water passes through is formd in each side wall surface of nozzle section inner casing 22；Outside the nozzle section
Be provided with a nozzle section water inlet 25 and a nozzle section water outlet 26 in each side wall surface of shell 21, the nozzle section into
The mouth of a river 25 and the nozzle section water outlet 26 are connected to the independent cooling water unit, and cooling water is made to intake from the nozzle section
Mouth 25 enters, and flows out after flowing through the independent cooling water unit from the nozzle section water outlet 26.In the present invention, described
One end such as front end of the length direction (length direction as shown in Figure 7) of one reinforcing rib 23 and the nozzle section inner casing 22 is (such as
Fig. 2 and left end shown in Fig. 7) connection, the other end of second reinforcing rib 24 and the length direction of the nozzle section inner casing 22
Such as rear end (right end as shown in Figure 2 and Figure 7) connection.In the present invention, the nozzle section inner casing 22 with outside the nozzle section
Shell 21 for example can be with nested encryptions together, so that first gap becomes closed cooling-water duct；In the present invention, institute
State the first reinforcing rib 23 and second reinforcing rib 24 can for example weld (such as spot welding) on the jet pipe pipe inner casing or
It is formed with inner casing entirety Milling Process；In the present invention, such as the nozzle section inner casing 22 four sides along its length are convex
It rises and is connect with the nozzle section shell 21, so that the corresponding independent cooling water unit of each side wall surface of the nozzle section inner casing 22
Interior cooling water will not mutually go here and there water.In the present invention, when the nozzle section 2 includes nozzle section inner casing 22 and nozzle section shell 21
When, the inner passage of the nozzle section 2 refers to the inner passage of the nozzle section inner casing 22, that is, has the interior of the group section 1
Portion channel is connected to the inner passage of the nozzle section inner casing 22, and the inner passage of the nozzle section 2 is from arrival end to outlet end
Cross section refer to the inner passage of the nozzle section inner casing 22 from arrival end to outlet end by square to rectangle
Cross section by square to rectangle.
In the present invention, the rectangular nozzle has the jet pipe in reasonable water-cooling structure, with existing plasma wind tunnel
Used water-cooling structure is compared, and the setting of first reinforcing rib 23 and second reinforcing rib 24 is so that in the nozzle section
The independent cooling water unit that a Cooling Water passes through is correspondingly formed in each side wall surface of shell, thus by nozzle section shell
The first gap between 21 and nozzle section inner casing 22 has been separated into four independent cooling water units, guarantees cooling water flow simultaneously every
It quickly flows in a independent cooling water unit, each section of the nozzle section is allow equably to be cooled；In addition, every
In a independent cooling water unit, cooling water enters from the nozzle section water inlet 25, and cooling water can be according to set side
To flowing without forming dead water region, and flowing through could be from the nozzle section water outlet 26 after the independent cooling water unit
Outflow, improves the utilization rate of cooling water, and guarantee cooling water flows through range, avoids hot-spot, and then improve rectangular nozzle
Cooling efficiency, enable jet pipe long-time steady operation under high temperature environment, ensure that the rectangular nozzle in high-temperature gas
The safety of self structure in the case where being passed through.
In the present invention, staggeredly spaced first reinforcing rib 23 and second reinforcing rib 24 in addition to playing
To the compartmentation of cooling water, guarantee, which is not provided with the first reinforcing rib and the position of the second reinforcing rib, to be passed through with Cooling Water,
So that cooling water quickly flows outer according to set direction, also while to can guarantee that the nozzle section is able to bear higher cold
But water pressure, so as to be further ensured that the security and stability of the nozzle section and the rectangular nozzle self structure, especially
It is that can guarantee the nozzle section and the rectangular nozzle well when the wall thickness of the nozzle section inner casing 22 is smaller certainly
The security and stability of body structure, so that the rectangular nozzle in the present invention after being passed through high-pressure cooling water, can lead in high-temperature gas
Long-term stable work under conditions of entering.
According to some preferred embodiments, the nozzle section water inlet 25 and the nozzle section water outlet 26 are located at
The two sides of described 21 one end of nozzle section shell, for example, as shown in Fig. 2, making cooling water from the front end of the nozzle section shell 21
The side of (left end of nozzle section shell as shown in Figure 2) enters in the independent cooling water unit, in each cooling water list
In member, due to the compartmentation of interlock spaced first reinforcing rib 23 and the second reinforcing rib 24, cooling water bypasses institute respectively
The position that the first reinforcing rib 23 and second reinforcing rib 24 are disconnected with 22 phase of nozzle section inner casing is stated, according to set direction
It quickly flows, last cooling water flows out the independent cooling water list from the other side of the front end of the nozzle section shell 21
Member, in the present invention, the flow direction of the cooling water for example can the directions as represented by arrow in Fig. 7.
According to some preferred embodiments, side and institute of the nozzle section shell 21 close to the nozzle section inner casing 22
It states nozzle section inner casing 22 to be arranged in parallel, so that first gap is wide, can so guarantee cooling water in first gap
The uniformity and stability of interior flowing.
According to some preferred embodiments, the inner wall of the nozzle section shell 21 and first reinforcing rib 23 and described
Second reinforcing rib 24 connection (such as contact connectio or close-fitting connection), can so to enter each independent cooling water list
Cooling water in member could be from nozzle section water outlet 26 after must bypass first reinforcing rib 23 and second reinforcing rib 24
Outflow, can effectively avoid enter into part cooling water in the independent cooling water unit not according to set flow direction flowing and
It is straight after directly being flowed through from the gap between first reinforcing rib 23, second reinforcing rib 24 and the nozzle section shell 21
Connect the utilization rate and cooling water that cooling water is further ensured from the outflow of nozzle section water outlet 26 flows through range, thus into one
Step ensure that cooling efficiency.In the present invention, it is preferred to which the inner wall for the nozzle section shell 21 can for example add with described first
Strengthening tendons 23 and second reinforcing rib 24 are closely connected or are in close contact connection.
According to some preferred embodiments, pass through flanged joint between the group section 1 and the nozzle section 2；It is described
The periphery of one end that group section 1 is connected with the nozzle section 2 is respectively arranged with group section flange 13 and nozzle section flange 27；Institute
It states the inside of nozzle section flange 27 and is circumferentially staggeredly spaced apart and set that there are four intake tunnel 271 and four exhalant canals 272, it is described
The water inlet end of intake tunnel 271 to be connected to cooling water source, intake by the water outlet of the intake tunnel 271 and the nozzle section
Mouth 25 connects, and the water inlet end of the exhalant canal 272 is connect with the nozzle section water outlet 26, and the exhalant canal 272 goes out
Water end (W.E.) is for cooling water to be discharged.In the present invention, the intake tunnel 271, the exhalant canal 272 open up position difference
It is corresponding with the position of the nozzle section water inlet 25, the nozzle section water outlet 26；In the present invention, such as in the jet pipe
Circumferential direction inside Duan Falan 27 correspondingly staggeredly opened up every 90 ° with four side wall surfaces of the nozzle section inner casing 22 one group into
Aquaporin 271 and one group of exhalant canal 272, and make the water outlet of the intake tunnel 271 and the nozzle section water inlet 25
Connection, the water inlet end of the exhalant canal 272 are connect with the nozzle section water outlet 26.
In the present invention, it is preferred to be detachably connected between the group section and the nozzle section by flange, thus just
There is the nozzle section of different outlet sizes in maintenance and replacement, greatly saved cost and improved the effect in use process
Rate, for example, only needing to design the nozzle section part of new outlet size if the outlet size of rectangular gas jet stream needs to adjust
, for example, if there is the nozzle section part for more covering different outlet sizes, then in use, also only need replacing nozzle section part
, greatly saved cost and improved efficiency.Certainly, in the present invention, if you do not need to replacement nozzle section, then described
The periphery of one end that group section is connected with the nozzle section can be not provided with group section flange but will be by nozzle section flange
It is welded respectively with group section and nozzle section two parts, so that the group section is non-dismountable as one with the nozzle section
Overall structure.
According to some preferred embodiments, first through hole 131, the nozzle section are provided on the group section flange 13
Flange 27 setting and the on the group section flange 13 at the position for not offering intake tunnel 271 and exhalant canal 272
Corresponding second through-hole (concealing the second through-hole in Fig. 1 and Fig. 2) of one through-hole 131, the first through hole 131 and described second
Through-hole can be fixed for passing through for bolt by the bolt of the first through hole 131 and second through-hole by nut close-fitting；
Preferably, it is additionally provided with sealing ring between the group section flange 13 and the nozzle section flange 27, to guarantee flange connections
Leakproofness.
According to some preferred embodiments, the periphery of the one end of the group section 1 far from the nozzle section 2 is additionally provided with
Group section forward flange 14, for example, as depicted in figs. 1 and 2, convenient for other equipment in the rectangular nozzle and plasma wind tunnel
Connection.
According to some preferred embodiments, the nozzle section 2 further includes that the first admitting pipe joint and the second outlet pipe connect
Head, one end of first admitting pipe joint are connect with the water inlet end of the intake tunnel 271, and the other end for example passes through water inlet pipe
It is connect with cooling water source, one end of first titting water outlet is connect with the water outlet of the exhalant canal 272, other end example
Such as cooling water drainage is put into designated position or returnable by outlet pipe.
According to some preferred embodiments, the nozzle section 2 include the first nozzle section and the second nozzle section, described first
The both ends of nozzle section are separately connected group section 1 and the second nozzle section, the cross-sectional area of the inner passage of first nozzle section
It can successively be passed from one end to the one end (from left end to right end) for being connected with second nozzle section for being connected with the group section
Increase, can successively successively decrease, can also be constant so that cross section of the inner passage of the nozzle section from arrival end to outlet end by
Square is to rectangle.
According to some preferred embodiments, the nozzle section 2 include the first nozzle section and the second nozzle section, described first
The both ends of nozzle section are separately connected group section 1 and the second nozzle section, the cross-sectional area of the inner passage of first nozzle section
From one end of the group section is connected with to being connected with one end gradual change (gradually changing) of second nozzle section, such as successively pass
Subtract or incremented by successively, as shown in Fig. 2, can so make the outlet of the nozzle section gradually seamlessly transit into meets rectangle
The outlet size that gas jet needs, advantageously ensures that the stability and uniformity of rectangular gas jet stream.In the present invention, example
Such as, the width of first nozzle section (width direction as shown in Figure 7) in the width direction is constant, and first nozzle section is from institute
One end of the length direction (length direction as shown in Figure 7) of the first nozzle section is stated to the other end, the height of first nozzle section
Degree successively successively decreases, so that the cross-sectional area of the inner passage of first nozzle section is from being connected with the one of the group section
Successively successively decrease end to one end for being connected with second nozzle section；In the present invention, second nozzle section is in the long cylinder knot of rectangle
Structure, as shown in Fig. 2, the cross-sectional area of the inner passage of second nozzle section is width, highly constant rectangle.In this hair
In bright, the inner passage of preferably described first nozzle section is connected to the inner passage of second nozzle section, is formd described
The inner passage of nozzle section；In the present invention, when the nozzle section includes the first nozzle section, the second nozzle section and including nozzle section
When inner casing, nozzle section shell, first nozzle section correspondingly also include the first nozzle section inner casing, the first nozzle section shell,
Second nozzle section correspondingly also includes the second nozzle section inner casing, the second nozzle section shell, the first nozzle section inner casing
Inner passage be connected with the inner passage of the second nozzle section inner casing, the first nozzle section shell and it is described second spray
Pipeline section cage connection, and the gap between the first nozzle section shell and the first nozzle section inner casing and second jet pipe
Gap connection between section shell and the second nozzle section inner casing.
According to some preferred embodiments, the group section 1 includes group section inner casing 12 and is arranged in the group section
The group section shell 11 in 12 outside of inner casing；There is the second gap between the group section shell 11 and the group section inner casing 12,
It circulates for Cooling Water；The two sides of the group section shell 11 are respectively arranged with group section water inlet 15 and group section water outlet
16, enter cooling water from the group section water inlet 15, and flow through behind second gap from the group section water outlet 16
Outflow.In the present invention, when the group section includes group section inner casing 12 and the group section shell 11, the group section 1
Inner passage refer to the inner passage of the group section inner casing 12, the inner passage of the group section 1 is from arrival end to going out
The cross section at mouth end refers to the inner passage of the group section inner casing 12 from arrival end to outlet by rounded transitional to square
The cross section at end is by rounded transitional to square；In the present invention, when the group section includes group section inner casing 12 and described turn
When connecing section shell 11, the periphery of one end that the group section 1 is connected with the nozzle section 2 is for example not provided with group section flange 13
But will be welded respectively with group section 1 and the two-part inner and outer shell of nozzle section 2 by nozzle section flange 27, so that described
Group section 1 and the nozzle section 2 become a non-removable overall structure.In the present invention, when the group section includes turning
When connecing section inner casing 12 and the group section shell 11, the group section 1 includes the first group section 121 and the second group section 122, is referred to
Be that the group section inner casing is made of first group section 121 and second group section 122；In the present invention, described
Group section inner casing 12 can be integrally formed structures or two sections of structures being formed by connecting.
In the present invention, it is preferred to be located at the group section for the group section water inlet 15 and the group section water outlet 16
The two sides of shell 11, and along the symmetrical setting of axial direction of the group section shell 11, in other words, the group section water inlet
15 and the group section water outlet 16 be separately distributed in the circumferential direction of the group section shell 11, and outside the group section
The symmetrical setting of the axial direction of shell 11；When the group section is placed along direction as shown in Figure 2, the group section water inlet
15 are located at the downside of the group section shell 11, and the group section water outlet 16 is located at the upside of the group section shell 11, example
Such as, as shown in fig. 6, flowing into cooling water from the downside of the group section shell 11, from the upside of the group section shell 11
Outflow can so guarantee that cooling water is full of entire second gap, guarantee the cooling efficiency of the group section, thus into one
Step ensure that the cooling efficiency of the entire rectangular nozzle.
According to some preferred embodiments, the group section is by group section forward flange 14, group section shell 11, group section
Inner casing 12 and group section flange 13 are welded.
According to some preferred embodiments, side and institute of the group section shell 11 close to the group section inner casing 12
It states group section inner casing 12 to be arranged in parallel, so that second gap is wide, can so guarantee cooling water in second gap
The uniformity and stability of interior flowing.In the present invention, the group section shell 11 for example may be used with the group section inner casing 12
Together with nested encryptions, inner wall (inner profile of group section shell) transient mode of the preferably described group section shell 11
Consistent with the outside wall surface of the group section inner casing 12 and inner wall, i.e., the inner wall transient mode of the described group section shell can be with
The outside wall surface transient mode of the group section inner casing matches, for example, as shown in Figure 5 and Figure 6, being more convenient the group section shell
11 close to the side of the group section inner casing 12 and being arranged in parallel for the group section inner casing 12.
According to some preferred embodiments, the thickness of the group section inner casing 12 is not more than 5mm；And/or described second
The width in gap is 3~5mm (such as 3,3.5,4,4.5 or 5mm).In the present invention, in order to guarantee the cooling effect of cooling water,
The wall thickness of the group section inner casing 12 preferably controls within 5mm, can so better ensure that cooling water in group section
Cooling effect；In the present invention, the width in second gap refer to the group section inner casing and the group section shell it
Between thickness.
The working principle of rectangular nozzle in some embodiments for example can be with are as follows:
High-temperature gas initially enters group section, and the section of high-temperature gas is square by circular cross-section conversion in group section
Section enters back into nozzle section, is converted to rectangular section by square section, the size of rectangular section can be set according to actual needs
Meter.
During high-temperature gas is passed through, the cooling water of group section by group section shell downside group section water inlet
Into the second gap for Cooling Water circulation between group section shell and group section inner casing, around the outer of group section inner casing
After wall surface two sides, from group section shell=upside group section water outlet be discharged outflow；Each side wall surface of nozzle section
Individually arrangement is intake all the way and is discharged all the way, and the intake tunnel that cooling water is opened up from nozzle section flange enters, and passes through jet pipe
Nozzle section water inlet on section shell enters the first gap of the circulation of the Cooling Water between nozzle section shell and nozzle section inner casing,
Since the segmentation of interlock spaced first reinforcing rib and the second reinforcing rib acts on, cooling water is just from nozzle section inner casing front end
Side enters independent cooling water unit, flows out independent cooling water unit from the nozzle section inner casing front end other side, passes through outside nozzle section
Corresponding nozzle section water outlet on shell, the corresponding exhalant canal outflow from nozzle section flange.
This invention simplifies the structures of the rectangular nozzle, can effectively solve high-temperature gas section by circle and be converted to square
The problem of shape, generates the plasma jet of rectangular section, in addition, water-cooling structure setting is reasonable, it is ensured that the rectangle spray
Pipe is in the case where high-temperature gas is passed through, the safety of rectangular nozzle self structure.
It illustrates, in the present invention, term " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It can be and be detachably connected, or be integrally connected；It can be and be directly connected to, be also possible to be indirectly connected with；For the general of this field
For logical technical staff, visual concrete condition understands the concrete meaning of the term in the present invention；Term " on ", "lower", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "inner", "outside" be based on attached orientation or positional relationship shown in Fig. 2, merely to
Convenient for description the present invention and simplify description, rather than the facility or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention；Term " first ", " second " etc. are only used for
Purpose is described, relative importance is not understood to indicate or imply.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of rectangular nozzle, it is characterised in that:
Including group section (1) and nozzle section (2), the inner passage of the group section (1) and the inner passage of the nozzle section (2)
Connection；
Cross section of the inner passage of the group section (1) from arrival end to outlet end is by rounded transitional to square, the spray
Cross section of the inner passage of pipeline section (2) from arrival end to outlet end forms a cross section by square to rectangle
The inner passage of the rectangular rectangular nozzle is gradually transitted to by circle；
The group section (1) include the first group section (121) and the second group section (122), first group section (121) it is interior
Portion channel is in conical structure, and the circumferentially-spaced of the conduit wall of first group section (121) rear end is equipped with multiple notch,
The cross section of the inner passage of second group section (122) is square, the conduit wall of the second group section (122) front end
Be equipped with the interconnecting piece that matches with multiple notch, first group section (121) and second group section (122) it
Between be cooperatively connected by the notch and the interconnecting piece, make the interior of first group section (121) and the second group section (122)
The connection of portion channel；
The nozzle section (2) includes the nozzle section shell of nozzle section inner casing (22) and setting on the outside of the nozzle section inner casing (22)
(21)；
There is the first gap, first gap is for supplying between the nozzle section shell (21) and the nozzle section inner casing (22)
Cooling water circulation；
A plurality of first reinforcing rib (23) and a plurality of is staggeredly arranged at intervals in each side wall surface of the nozzle section inner casing (22)
Second reinforcing rib (24), first reinforcing rib (23) connect with one end of the nozzle section inner casing (22), and described second reinforces
Muscle (24) is connect with the other end of the nozzle section inner casing (22), so that shape in each side wall surface of the nozzle section inner casing (22)
The independent cooling water unit passed through at a Cooling Water；
A nozzle section water inlet (25) and a nozzle section are provided in each side wall surface of the nozzle section shell (21)
Water outlet (26), the nozzle section water inlet (25) and the nozzle section water outlet (26) connect with the independent cooling water unit
It is logical, enter cooling water from the nozzle section water inlet (25), and flow through after the independent cooling water unit from the nozzle section
Water outlet (26) outflow.
2. rectangular nozzle according to claim 1, it is characterised in that:
The nozzle section water inlet (25) and the nozzle section water outlet (26) are located at described nozzle section shell (21) one end
Two sides.
3. rectangular nozzle according to claim 1, it is characterised in that:
The inner wall of the nozzle section shell (21) is connect with first reinforcing rib (23) and second reinforcing rib (24).
4. rectangular nozzle according to claim 1, it is characterised in that:
Pass through flanged joint between the group section (1) and the nozzle section (2)；
The periphery of one end that the group section (1) is connected with the nozzle section (2) be respectively arranged with group section flange (13) and
Nozzle section flange (27)；
The inside of the nozzle section flange (27), which is circumferentially staggeredly spaced apart to set to be discharged there are four intake tunnel (271) and four, to be led to
Road (272), the water inlet end of the intake tunnel (271) with cooling water source to be connected to, the water outlet of the intake tunnel (271)
It is connect with the nozzle section water inlet (25), the water inlet end of the exhalant canal (272) and the nozzle section water outlet (26) are even
It connects, the water outlet of the exhalant canal (272) is for cooling water to be discharged.
5. rectangular nozzle according to claim 1, it is characterised in that:
The nozzle section (2) includes the first nozzle section and the second nozzle section, and the both ends of first nozzle section are separately connected switching
Section (1) and the second nozzle section, the cross-sectional area of the inner passage of first nozzle section is from being connected with the group section (1)
One end is to one end gradual change for being connected with second nozzle section.
6. rectangular nozzle according to claim 1, it is characterised in that:
The group section (1) includes the group section shell of group section inner casing (12) and setting on the outside of the group section inner casing (12)
(11)；
There is the second gap between the group section shell (11) and the group section inner casing (12), circulate for Cooling Water；
The two sides of the group section shell (11) are respectively arranged with group section water inlet (15) and group section water outlet (16), make cold
But water enters from the group section water inlet (15), and flows after flowing through second gap from the group section water outlet (16)
Out.
7. rectangular nozzle according to claim 6, it is characterised in that:
The side of the close group section inner casing (12) of the group section shell (11) is parallel with group section inner casing (12) to be set
It sets, so that second gap is wide.
8. rectangular nozzle according to claim 6, it is characterised in that:
The thickness of the group section inner casing (12) is not more than 5mm；And/or
The width in second gap is 3~5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100689.XA CN108956082B (en) | 2018-09-20 | 2018-09-20 | A kind of rectangular nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100689.XA CN108956082B (en) | 2018-09-20 | 2018-09-20 | A kind of rectangular nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN108956082A CN108956082A (en) | 2018-12-07 |
| CN108956082B true CN108956082B (en) | 2019-05-24 |
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| CN201811100689.XA Active CN108956082B (en) | 2018-09-20 | 2018-09-20 | A kind of rectangular nozzle |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762305A (en) * | 2019-11-15 | 2020-02-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Water-cooling test flange for hypersonic-velocity low-density wind tunnel stabilization section |
| CN112727634B (en) * | 2020-12-07 | 2022-08-16 | 西安航天动力研究所 | Rectangular cross-section spray pipe |
| CN112556970B (en) * | 2020-12-21 | 2021-08-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for calculating transition profile of variable-section-shape high-speed wind tunnel test section |
| CN112798305B (en) * | 2020-12-21 | 2022-11-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Water-cooled rectangular spray pipe |
| CN112945507B (en) * | 2021-02-03 | 2023-05-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Hypersonic wind tunnel axisymmetric spray pipe |
| CN114483368B (en) * | 2022-01-20 | 2023-03-31 | 南京航空航天大学 | Improvement method of double-throat thrust vectoring nozzle |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106507928B (en) * | 2008-03-26 | 2014-06-04 | 中国航天空气动力技术研究院 | The hypersonic arc tunnel of large scale |
| CN101975653B (en) * | 2010-11-18 | 2012-08-29 | 中国人民解放军国防科学技术大学 | Supersonic-speed axisymmetric mixing layer wind tunnel |
| CN101975652B (en) * | 2010-11-18 | 2011-12-28 | 中国人民解放军国防科学技术大学 | Ultrasonic-velocity free vortex wind tunnel |
| CN102536514B (en) * | 2012-01-17 | 2014-01-15 | 南京航空航天大学 | Binary plug nozzle of turbofan engine with afterburning |
| CN102699108A (en) * | 2012-05-23 | 2012-10-03 | 南京航空航天大学 | Method for moulding circle-rectangular nozzle in hyperelliptic transition |
| CN103174547A (en) * | 2013-03-06 | 2013-06-26 | 中国航空工业集团公司沈阳发动机设计研究所 | Mixer suitable for binary spray tube |
| CN104406763B (en) * | 2014-10-17 | 2017-03-01 | 北京航天益森风洞工程技术有限公司 | nozzle throat section water-cooling structure |
| CN104948344B (en) * | 2015-07-09 | 2017-11-03 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of binary contracting nozzle |
| CN205483486U (en) * | 2016-01-29 | 2016-08-17 | 华北电力大学 | Can be used to three -dimensional measuring low speed wind tunnel of wind speed |
| CN106768803B (en) * | 2016-12-12 | 2019-02-15 | 中国燃气涡轮研究院 | A kind of pneumatic jet pipe in subsonic speed circle turn side |
| 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 |
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