CN205049314U - Experimental apparatus is measured to non - smooth surface drag reduction of rotation type - Google Patents
Experimental apparatus is measured to non - smooth surface drag reduction of rotation type Download PDFInfo
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- CN205049314U CN205049314U CN201520772105.9U CN201520772105U CN205049314U CN 205049314 U CN205049314 U CN 205049314U CN 201520772105 U CN201520772105 U CN 201520772105U CN 205049314 U CN205049314 U CN 205049314U
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- drag reduction
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Abstract
The utility model provides an experimental apparatus is measured to non - smooth surface drag reduction of rotation type, including the experiment body, a centrifugal pump with be used for storing the fluidic pond for providing power, the fluid flow entry of experiment body is said with the water outlet pipe of centrifugal pump and is communicate, the fluid flow export of experiment body is passed through the pipeline and is introduced in the pond, the water inlet and the pond pipeline intercommunication of centrifugal pump, the experiment body includes the runner base, a casing for simulating the runner, resistance regulation and control subassembly and controller, resistance regulation and control unit mount is inside the casing, the resistance regulation and control subassembly port corresponding with the controller is connected. The beneficial effects of the utility model are that: the fluid of experiment usefulness can recycle, and is energy -concerving and environment -protective, device simple structure, cost are low, exemplar easy dismounting, the experimental performance is strong and do not receive numerous advantages such as experimental enviroment restriction on every side, each item test requirement in can the fully provided process of the test.
Description
Technical field
The utility model relates to a kind of rotary non-smooth surface drag reduction experiments of measuring device.
Background technology
Bionic non-smooth surface drag reduction technology is one of hot issue of research both at home and abroad always.Its drag-reduction effect is obvious, and can not bring additional energy consumption to apparatus, also can not take up room, environmental protection.Therefore, make experimentally quantifier elimination to be determined to bionic non-smooth surface technology row and just seem important.
In traditional hydromechanical research, great majority adopt water hole, wind-tunnel, the experimental facilitiess such as pond, not only floor area is large, bulky to adopt above-mentioned experimental technique means, and need the expense of at substantial, thus all certain limitation and restriction will be subject in all many-sides.According to when testing in pond, first, pond limited length, the requirement of endless can not be met, and speed parameter can only regulate in less scope, only can simulate the resistance measurement requirement under low flow velocity motion state, be difficult to the environment of simulation boats and ships when high speed operation.In addition, said apparatus cannot realize the resistance measurement of oblique non-smooth surface.
Therefore, R & D design cheap, stable performance, the small-sized resistance measurement device that can also carry out rotation process has positive effect for the research of bionic surface problem.
Summary of the invention
The utility model cannot regulate and control resistance, bulky problem for current fluid resistance test device, proposes a kind ofly can regulate and control resistance, rotary non-smooth surface drag reduction experiments of measuring device that the simple cost of structure is low.
One described in the utility model rotary non-smooth surface drag reduction experiments of measuring device, comprise experiment body, for providing the centrifugal pump of power and the pond for store fluid, the fluid entry port of described experiment body and the water delivering orifice pipeline communication of described centrifugal pump, the fluid flow outlet of described experiment body introduced by pipeline described in pond in, the water inlet of described centrifugal pump and described pond pipeline communication, it is characterized in that: described experiment body comprises runner base, for simulating the housing of runner, resistance regulation and control assembly and controller, described resistance regulation and control assembly is arranged on described enclosure interior, the port that described resistance regulation and control assembly is corresponding to described controller connects,
Described housing comprises and is positioned at anterior runner diffuser, is positioned at the runner experimental section at middle part and is positioned at the runner contraction section of afterbody, the fluid entry port formed with the water delivering orifice pipeline communication of described centrifugal pump is reduced in the front end of described runner diffuser, and the fluid flow outlet that the end of described runner contraction section reduces formation causes in described pond by pipeline; The upper plate of described runner experimental section, base plate are respectively equipped with coaxial installation through hole, and the installation of the upper plate of described runner experimental section is furnished with end cap;
Described resistance regulation and control assembly comprises experiment exemplar, rotating disk, measurement axle, Flow speed measurer and foil gauge, the upper surface of described experiment exemplar is the non-smooth surface regulating resistance, affixed with rotating disk after the installation through hole of the base plate of the runner experimental section described in described experiment exemplar embeds, and seal between experiment exemplar described in ensureing and described runner experimental section; The outer ring of described rotating disk is provided with scale, and the described rotating disk pointer affixed with described runner experimental section base plate coordinates the regulation and control realizing turntable rotation angle; The lower end of described measurement axle is against on described runner base, and the bearing fit of center of turntable hole and described experiment exemplar bottom belt bearing (ball) cover is passed in the upper end of described measurement axle; Described foil gauge is arranged on the position measured between axle top and bearing, and corresponding to the described controller respectively port of the control end of described foil gauge, described Flow speed measurer is electrically connected.
Described fluid entry port cross section, the cross section of fluid flow outlet are circle, and the fluid experiment section cross section of centre is rectangle.
Described runner experimental section is provided with the mounting hole for installing described resistance regulation and control assembly, and the mounting hole of the upper plate of described runner experimental section is furnished with end cap.
The installation through hole of described base plate is stepped hole, and the step overall diameter of lower part is less than the step overall diameter of upper part, and the sidewall of described experiment exemplar mates with mounting hole.
The upper surface of described experiment exemplar is the non-smooth surface of uniform some vee-cuts, the non-smooth surface of uniform some rectangle grooves or large deformation curved surface.
The upper surface of described experiment exemplar is disc, circular arc or bionic curved surface.
The magnet fluid sealing that sealing between described runner experimental section and experiment exemplar adopts anti-fluid to leak.
Described bearing (ball) cover is stuck in bottom experiment exemplar in the groove that arranges, and keeps bearing (ball) cover and coaxial bearing.
The side away from pointer of described runner experimental section is provided with the pilot pin for blocking rotating disk.
Described end cap is bolted on the upper plate of described runner experimental section by four, and accompanies gasket seal between described end cap and described upper plate.
Principle of work of the present utility model: whole device hydrodynamic force is provided by centrifugal pump, the device that fluid is deposited is pond.After assembling complete device, unclamp pilot pin, make rotating disk be in the state that can freely rotate, and turn to the angle needing to measure, then screwed in place bolt, such rotating disk can not rotate.After starting experiment, fluid is centrifuged pump and extracts out from pond, flows with after pipeline.Fluid flows into from the fluid entry port of runner diffuser, flows through runner experimental section, then flows out from runner contraction section, finally flow back into pond, completes a circulation.Due to this experiment table is closed, and therefore fluid can reuse.
Read Flow speed measurer can control at the inner flow velocity of experimental section.When fluid flow through experiment exemplar surface, because the stickiness of fluid can produce frictional resistance, this power can act on experiment exemplar on and foil gauge on time.Foil gauge can go out deformation.Data on foil gauge are undertaken collecting, store and analyzing by the controller connected, thus can draw concrete drag-reduction effect.This device is easy and simple to handle, overcomes the shortcoming of large-scale plant complex operation.
The beneficial effect of the utility model device is: device is a closed experiment table, and the fluid of experiment can recycle, energy-conserving and environment-protective.Apparatus structure is simple, it is low to spend, exemplar easy accessibility, experimental performance by force and not by many merits such as surrounding test environmental restraint, fully can meet every testing requirements in process of the test.It is a kind of novel and have the test bed of certain feasibility that this drag reduction test device is that the experimental study of bionic non-smooth surface coefficient of frictional resistance measuring technology provides.
Accompanying drawing explanation
Fig. 1 is the three dimensional sectional view of non-smooth surface drag reduction experiments of measuring of the present utility model.
Fig. 2 is the axonometric drawing of non-smooth surface drag reduction experiments of measuring different angles of the present utility model
Fig. 3 is the wiring layout of non-smooth surface drag reduction experiments of measuring whirligig of the present utility model
Fig. 4 is the partial enlarged drawing of non-smooth surface drag reduction experiments of measuring magnet fluid sealing of the present utility model
Fig. 5 is the partial enlarged drawing at non-smooth surface drag reduction experiments of measuring of the present utility model sealing position
Fig. 6 is proving installation structure diagram of the present utility model.
Embodiment
The utility model is further illustrated below in conjunction with accompanying drawing
With reference to accompanying drawing:
Embodiment 1 one described in the utility model rotary non-smooth surface drag reduction experiments of measuring device, comprise experiment body, for providing the centrifugal pump of power and the pond 21 for store fluid, the fluid entry port of described experiment body and the water delivering orifice pipeline communication of described centrifugal pump 19, the fluid flow outlet of described experiment body introduced by pipeline described in pond 21 in, the water inlet of described centrifugal pump 19 and described pond 21 pipeline communication, described experiment body comprises runner base 1, for simulating the housing of runner, resistance regulation and control assembly and controller, described resistance regulation and control assembly is arranged on described enclosure interior, the port that described resistance regulation and control assembly is corresponding to described controller connects,
Described housing comprises and is positioned at anterior runner diffuser 2, is positioned at the runner experimental section 5 at middle part and is positioned at the runner contraction section 6 of afterbody, the fluid entry port formed with the water delivering orifice pipeline communication of described centrifugal pump 19 is reduced in the front end of described runner diffuser 2, and the fluid flow outlet that the end of described runner contraction section 6 reduces formation causes in described pond 21 by pipeline; The upper plate of described runner experimental section 5, base plate are respectively equipped with coaxial installation through hole, and the installation through hole of the upper plate of described runner experimental section 5 is furnished with end cap 4;
Described resistance regulation and control assembly comprises experiment exemplar 3, rotating disk 9, measures axle 13, Flow speed measurer 7 and foil gauge 20, the upper surface of described experiment exemplar 3 is the non-smooth surface regulating resistance, described experiment exemplar 3 is affixed with rotating disk 9 after embedding the installation through hole of the base plate of described runner experimental section 5, and ensure described in experiment exemplar 3 and described runner experimental section 5 between seal; The outer ring of described rotating disk 9 is provided with scale, and described rotating disk 9 pointer 8 affixed with described runner experimental section 5 base plate coordinates the regulation and control realizing rotating disk 9 anglec of rotation; The lower end of described measurement axle 13 is against on described runner base 1, and the upper end of described measurement axle 13 coordinates with the bearing 11 of described experiment exemplar 3 bottom belt bearing (ball) cover 12 through rotating disk 9 center pit; Described foil gauge 20 is arranged on the position measured between axle 13 top and bearing 11, and described foil gauge 20, port that the control end of described Flow speed measurer 7 is corresponding to described controller are respectively electrically connected.
Described fluid entry port cross section, the cross section of fluid flow outlet are circle, and fluid experiment section 5 cross section of centre is rectangle.
The installation through hole of described base plate is stepped hole, and the step overall diameter of lower part is less than the step overall diameter of upper part, and the sidewall of described experiment exemplar 3 mates with mounting hole.
The upper surface of described experiment exemplar 3 is the non-smooth surface of uniform some vee-cuts, the non-smooth surface of uniform some rectangle grooves or large deformation curved surface.
The upper surface of described experiment exemplar 3 is disc, circular arc or bionic curved surface.
The magnet fluid sealing 16 that sealing between described runner experimental section 5 and experiment exemplar 3 adopts anti-fluid to leak.
Described bearing (ball) cover 12 is stuck in the groove of setting bottom experiment exemplar 3, and keeps bearing (ball) cover 12 coaxial with bearing 11.
The side away from pointer 8 of described runner experimental section 5 is provided with the pilot pin 10 for blocking rotating disk.
Described end cap 4 is fixed on the upper plate of described runner experimental section 5 by four bolts 18, and accompanies gasket seal 17 between described end cap 4 and described upper plate.
Principle of work of the present utility model: whole device hydrodynamic force is provided by centrifugal pump 19, the device that fluid is deposited is pond 21.After assembling complete device, unclamp pilot pin 10, make rotating disk 9 be in the state that can freely rotate, and turn to the angle needing to measure, then screwed in place bolt, such rotating disk 9 can not rotate.After starting experiment, fluid is centrifuged pump 19 and extracts out from pond 21, flows with after pipeline.Fluid flows into from the fluid entry port of runner diffuser 2, flows through runner experimental section 5, then flows out from runner contraction section 6, finally flow back into pond 21, completes a circulation.Due to this experiment table is closed, and therefore fluid can reuse.
Read Flow speed measurer 7 can control at the inner flow velocity of experimental section.When fluid flow through experiment exemplar surface, because the stickiness of fluid can produce frictional resistance, this power can act on experiment exemplar on and foil gauge on time.Foil gauge can go out deformation.Data on foil gauge are undertaken collecting, store and analyzing by the controller connected, thus can draw concrete drag-reduction effect.This device is easy and simple to handle, overcomes the shortcoming of large-scale plant complex operation.
The installation through hole use of runner experimental section 5 upper plate is by this hole, experiment exemplar 3 is placed to lower surface and gets on.Contribute to the dismounting of part easily like this.When testing, the installation through hole of experimental section upper plate is closed by end cap 4, and it is fastening to use screw 18 to carry out, and is sealed between the two, as shown in Figure 5 by pad 17.Runner base plate also has one to install through hole, and the diameter in hole is smaller than the diameter in the hole of upper surface.Experiment exemplar 3 is placed on this shoulder hole, occurring leaking, laying magnet fluid sealing 16, as shown in Figure 4 between experiment exemplar 3 and runner to prevent runner.A Flow speed measurer 7 is laid in the side of runner experimental section 5.
As shown in Figure 3, experiment exemplar 3 is step-like disks, and upper surface radius of a circle is larger than lower surface, can be placed on multidiameter like this.On the upper surface of experiment exemplar, process non-smooth surface, as vee-cut, rectangle groove or large deformation curved surface.In addition, the profile of experiment exemplar can make disc, circular arc, also can also be bionical curved surface.
The lower surface of experiment exemplar 3 processes four threaded holes, and object is to assemble a rotating disk 9.Rotating disk 9 is connected by screw 15 and experiment exemplar 3.Rotation nature along with rotating disk 9 can drive the rotation of experiment exemplar 3.There is a circle scale in the outside of rotating disk 9, and scale coordinates with the pointer 8 of side on runner experimental section 5, just can accurately control angle, achieves the function measuring oblique groove.Only need an experiment exemplar just can measure whole experiment, avoid the waste of material, decrease the expenditure of funds.
The bottom centre of experiment exemplar 3 opens a hole, and for placing bearing 11, reprocessing one circle groove is for placing bearing (ball) cover 12.Test axle 13 one end is fixed on one end of base 14, and the other end is placed in one end of bearing.Foil gauge 20 is arranged on the one end measuring axle, is specially one end of flow path direction, and is in the position measured between axle 13 and bearing 11.Foil gauge 20 is collected with computing machine, memory device is connected.
In order to prevent whirligig from occurring the problems such as vibration, add a bolt 10 at the opposite side of runner experimental section 5, as shown in Figure 2.Its principle is, when rotating disk 9 needs to rotate, bolt 10 unclamps.When needs are tested, tight a bolt 10, make the head of bolt withstand rotating disk 9.So just can reduce the vibration of whole whirligig.This is conducive to improving experimental precision.
Content described in this instructions embodiment is only enumerating the way of realization that utility model is conceived; protection domain of the present utility model should not be regarded as being only limitted to the concrete form that embodiment is stated, protection domain of the present utility model also comprises those skilled in the art and conceives the equivalent technologies means that can expect according to the utility model.
Claims (9)
1. a rotary non-smooth surface drag reduction experiments of measuring device, comprise experiment body, for providing the centrifugal pump of power and the pond for store fluid, the fluid entry port of described experiment body and the water delivering orifice pipeline communication of described centrifugal pump, the fluid flow outlet of described experiment body introduced by pipeline described in pond in, the water inlet of described centrifugal pump and described pond pipeline communication, it is characterized in that: described experiment body comprises runner base, for simulating the housing of runner, resistance regulation and control assembly and controller, described resistance regulation and control assembly is arranged on described enclosure interior, the port that described resistance regulation and control assembly is corresponding to described controller connects,
Described housing comprises and is positioned at anterior runner diffuser, is positioned at the runner experimental section at middle part and is positioned at the runner contraction section of afterbody, the fluid entry port formed with the water delivering orifice pipeline communication of described centrifugal pump is reduced in the front end of described runner diffuser, and the fluid flow outlet that the end of described runner contraction section reduces formation causes in described pond by pipeline; The upper plate of described runner experimental section, base plate are respectively equipped with coaxial installation through hole, and the installation of the upper plate of described runner experimental section is furnished with end cap;
Described resistance regulation and control assembly comprises experiment exemplar, rotating disk, measurement axle, Flow speed measurer and foil gauge, the upper surface of described experiment exemplar is the non-smooth surface regulating resistance, affixed with rotating disk after the installation through hole of the base plate of the runner experimental section described in described experiment exemplar embeds, and seal between experiment exemplar described in ensureing and described runner experimental section; The outer ring of described rotating disk is provided with scale, and the described rotating disk pointer affixed with described runner experimental section base plate coordinates the regulation and control realizing turntable rotation angle; The lower end of described measurement axle is against on described runner base, and the bearing fit of center of turntable hole and described experiment exemplar bottom belt bearing (ball) cover is passed in the upper end of described measurement axle; Described foil gauge is arranged on the position measured between axle top and bearing, and corresponding to the described controller respectively port of the control end of described foil gauge, described Flow speed measurer is electrically connected.
2. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 1, is characterized in that: described fluid entry port cross section, the cross section of fluid flow outlet are circle, and the fluid experiment section cross section of centre is rectangle.
3. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 2, it is characterized in that: the installation through hole of described base plate is stepped hole, and the step overall diameter of lower part is less than the step overall diameter of upper part, the sidewall of described experiment exemplar mates with mounting hole.
4. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 3, is characterized in that: the upper surface of described experiment exemplar is the non-smooth surface of uniform some vee-cuts, the non-smooth surface of uniform some rectangle grooves or large deformation curved surface.
5. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 4, is characterized in that: the upper surface of described experiment exemplar is disc, circular arc or bionic curved surface.
6. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 2, is characterized in that: the magnet fluid sealing that the sealing between described runner experimental section and experiment exemplar adopts anti-fluid to leak.
7. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 6, is characterized in that: described bearing (ball) cover is stuck in bottom experiment exemplar in the groove that arranges, and keeps bearing (ball) cover and coaxial bearing.
8. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 1, is characterized in that: the side away from pointer of described runner experimental section is provided with the pilot pin for blocking rotating disk.
9. a kind of rotary non-smooth surface drag reduction experiments of measuring device as claimed in claim 2, it is characterized in that: described end cap is bolted on the upper plate of described runner experimental section by four, and accompanies gasket seal between described end cap and described upper plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520772105.9U CN205049314U (en) | 2015-09-30 | 2015-09-30 | Experimental apparatus is measured to non - smooth surface drag reduction of rotation type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520772105.9U CN205049314U (en) | 2015-09-30 | 2015-09-30 | Experimental apparatus is measured to non - smooth surface drag reduction of rotation type |
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| CN205049314U true CN205049314U (en) | 2016-02-24 |
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| CN201520772105.9U Withdrawn - After Issue CN205049314U (en) | 2015-09-30 | 2015-09-30 | Experimental apparatus is measured to non - smooth surface drag reduction of rotation type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157951A (en) * | 2015-09-30 | 2015-12-16 | 浙江工业大学 | Rotary experiment apparatus of non-smooth surface resistance reduction measurement |
| CN106092505A (en) * | 2016-07-01 | 2016-11-09 | 浙江工业大学 | A kind of drag reduction surface based on bionical jet |
-
2015
- 2015-09-30 CN CN201520772105.9U patent/CN205049314U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157951A (en) * | 2015-09-30 | 2015-12-16 | 浙江工业大学 | Rotary experiment apparatus of non-smooth surface resistance reduction measurement |
| CN106092505A (en) * | 2016-07-01 | 2016-11-09 | 浙江工业大学 | A kind of drag reduction surface based on bionical jet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160224 Effective date of abandoning: 20171215 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160224 Effective date of abandoning: 20171215 |