CN112498733B - Deicing device for icing wind tunnel test - Google Patents
Deicing device for icing wind tunnel test Download PDFInfo
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- CN112498733B CN112498733B CN202110167933.XA CN202110167933A CN112498733B CN 112498733 B CN112498733 B CN 112498733B CN 202110167933 A CN202110167933 A CN 202110167933A CN 112498733 B CN112498733 B CN 112498733B
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- heat transfer
- wind
- tunnel test
- deicing device
- wind tunnel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/30—Cleaning aircraft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
Abstract
The invention is suitable for the technical field of icing wind tunnel tests, and provides a deicing device for the icing wind tunnel tests, which comprises a cutting part, a wind guide cover, a heating assembly and a heat transfer assembly, wherein the wind guide cover is arranged on the cutting part, and a wind guide groove is formed between the wind guide cover and the cutting part; the heating assembly and the heat transfer assembly are accommodated in the air guide groove, the heat transfer assembly is arranged on the cutting part, and the heating assembly is arranged on the heat transfer assembly. The invention can improve the deicing efficiency and the deicing effect.
Description
Technical Field
The invention belongs to the technical field of icing wind tunnel tests, and particularly relates to a deicing device for an icing wind tunnel test.
Background
After the icing wind tunnel test, icing can be formed on the test model, and after the work such as ice shape measurement and the like is finished, the icing on the test model needs to be removed; in particular, thick ice accretions may form in the support structures, structural members in the icing wind tunnel.
In an icing wind tunnel test, on one hand, ice on a test model needs to be quickly removed, and in order to reduce environmental pollution, mechanical deicing schemes such as shovels and scrapers are mainly adopted at present.
When manual small-range mechanical deicing is performed, the conventional shovel, scraper and other schemes are difficult to quickly and efficiently approach the boundary area between ice and an attachment surface, a large amount of ice slag is remained after single operation, observation is inconvenient, the working surface of the deicing machine is difficult to ensure to be close to the bottom of an ice layer, and more ice slag can be remained on a test model.
Meanwhile, thick accumulated ice formed at the supporting mechanism and the structural member in the icing wind tunnel is deiced in a scraper and shovel mode, and the deicing efficiency is low.
Disclosure of Invention
The invention aims to provide a deicing device for an icing wind tunnel test, and aims to solve the technical problems of low deicing efficiency and poor deicing effect in the prior art.
The invention provides a deicing device for an icing wind tunnel test, which comprises a cutting part, a wind guide cover, a heating assembly and a heat transfer assembly, wherein the wind guide cover is arranged on the cutting part, and a wind guide groove is formed between the wind guide cover and the cutting part; the heating assembly and the heat transfer assembly are accommodated in the air guide groove, the heat transfer assembly is arranged on the cutting part, and the heating assembly is arranged on the heat transfer assembly.
Optionally, the cutting tool further comprises a transition part and a mounting part, wherein the transition part is arranged between the mounting part and the cutting part; the transition part is provided with an air guide hole facing the air guide groove.
Optionally, a plane of the mounting portion and a plane of the cutting portion are parallel to and spaced apart from each other.
Optionally, the air guide groove includes an air inlet and an air outlet, and a sectional area of the air inlet is larger than a sectional area of the air outlet.
Optionally, in a direction from the air inlet to the air outlet, the air guide groove includes a straight line section, a contraction section, and an expansion section, which are sequentially distributed.
Optionally, the air guide cover includes a top cover, a first air guide strip and a second air guide strip, and the first air guide strip and the second air guide strip are respectively located on two sides of the top cover.
Optionally, the wind guide device further comprises a guide vane, wherein the guide vane is rotatably connected with the front part of the first wind guide strip, and/or the guide vane is rotatably connected with the front part of the second wind guide strip.
Optionally, the heat transfer assembly is provided with a heat dissipation groove, and the extending direction of the heat dissipation groove is parallel to the direction of the air guide hole.
Optionally, when thick ice removal is required, selecting a heat transfer assembly having a first size; when it is desired to remove thin ice, a heat transfer assembly having a second size is selected, wherein the first size is larger than the second size.
Compared with the prior art, the invention has the technical effects that:
1. in the invention, when the ice on the airplane is cut off, flowing gas can be introduced into the air guide groove, on one hand, the flowing gas can blow off the cut off ice, on the other hand, the flowing gas can bring part of heat into the contact position of the sawteeth and the ice, thus being beneficial to cutting; moreover, the flowing gas can conveniently remove ice slag on the airplane, and the deicing effect is good;
2. in the invention, the heating component can transfer heat to the cutting part through the heat transfer component and further transfer heat to the saw teeth, so that the saw teeth can easily extend into the ice at the initial cutting stage, and the saw teeth at the initial cutting stage can be prevented from slipping on the surface of the ice;
3. in the invention, because the sectional area of the air inlet is larger than that of the air outlet, the flow velocity of flowing gas can be accelerated, so that the fluid velocity at the air outlet is larger than that at the air inlet, and the cut ice can be blown away and cut;
4. in the invention, the flowing gas is introduced into the middle part of the saw teeth, so that the problem of ice debris accumulation at the middle part of the saw teeth can be solved to a certain extent, the saw teeth are prevented from being clamped in the ice, and the deicing efficiency is improved;
5. in the invention, the flow deflector can adjust the blowing direction of the flowing gas from the air outlet so as to realize the directional blowing of the removed ice chips and avoid secondary cleaning;
6. in the present invention, the applicant has found that the heated flowing gas and the heated cutting portion affect the deicing efficiency to a different extent, and therefore, when thick ice needs to be removed, a heat transfer member having a first size is selected, and when thin ice needs to be removed, a heat transfer member having a second size is selected, the first size being larger than the second size.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a deicing device for an icing wind tunnel test according to an embodiment of the present invention;
FIG. 2 is a schematic view of the wind scooper with the wind scooper concealed;
fig. 3 is a schematic structural view of the wind scooper and the guide vane.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural view of a deicing device for an icing wind tunnel test according to an embodiment of the present invention, fig. 2 is a schematic structural view in which an air guide cover is hidden, and fig. 3 is a schematic structural view of the air guide cover and a guide vane.
Referring to fig. 1 to 3, the deicing device for an icing wind tunnel test provided by the embodiment of the invention comprises a cutting part 10, a wind guide cover 20, a heating assembly 41 and a heat transfer assembly 40, wherein the wind guide cover 20 is arranged on the cutting part 10, and a wind guide groove is formed between the wind guide cover 20 and the cutting part 10; the heating assembly 41 and the heat transfer assembly 40 are accommodated in the air guide groove, the heat transfer assembly 40 is arranged on the cutting part 10, and the heating assembly 41 is arranged on the heat transfer assembly 40.
The cutting part 10 is provided with saw teeth 14 at the front, and ice on the airplane can be cut off through the saw teeth 14;
when the ice on the airplane is cut off, flowing gas can be introduced into the air guide groove, on one hand, the cut-off ice can be blown away by the flowing gas, and on the other hand, a part of heat can be brought into the contact position of the saw teeth 14 and the ice by the flowing gas, so that the cutting can be facilitated; moreover, the flowing gas can conveniently remove ice slag on the airplane, and the deicing effect is good;
the heating unit 41 can transfer heat to the cutting part 10 through the heat transfer unit 40, and further transfer heat to the saw teeth 14, so that the saw teeth 14 are easily inserted into the frozen part at the initial stage of cutting, and if the saw teeth 14 are not heated, the saw teeth 14 are easily slipped on the frozen part at the initial stage of cutting, which poses a certain risk and has low deicing efficiency;
on the other hand, the heat transfer assembly 40 also emits a part of heat into the air guide groove to heat the flowing air in the air guide groove, which is further beneficial to blowing away and cutting the cut ice.
Further, the cutting tool also comprises a transition part 11 and a mounting part 12, wherein the transition part 11 is arranged between the mounting part 12 and the cutting part 10; the transition part 11 is provided with an air guide hole 15 facing the air guide groove.
During deicing, the whole deicing device is arranged on a working head of a power tool such as a power saw through the mounting part 12, so that the deicing is not required to be carried out manually during deicing, the power tool is used for providing power, and the deicing efficiency is further improved;
the flowing gas can enter the wind guide groove through the wind guide hole 15.
Further, the plane of the mounting portion 12 and the plane of the cutting portion 10 are parallel to and spaced apart from each other, and by this arrangement, on one hand, an air inlet pipe (not shown) can be mounted on the lower surface of the mounting portion 12, so that the air inlet pipe will not interfere with surrounding components too much during deicing, thereby increasing the convenience of operation; on the other hand, by the arrangement, most of the flowing gas passing through the air guide holes 15 can enter the air guide groove, so that the loss of the flowing gas is reduced, and the deicing efficiency is further increased.
Further, referring to fig. 3, the air guiding groove includes an air inlet 24 and an air outlet 25, and a cross-sectional area of the air inlet 24 is larger than a cross-sectional area of the air outlet 25.
Through the arrangement, flowing gas can be introduced into the air guide groove as much as possible, and the sectional area of the air inlet 24 is larger than that of the air outlet 25, so that the flow velocity of the flowing gas can be accelerated, the fluid velocity at the air outlet 25 is larger than that at the air inlet 24, and the cut ice can be blown away and cut.
Specifically, in the direction from the air inlet 24 to the air outlet 25, the air guide groove includes a straight line segment L, a contraction segment S, and an expansion segment K, which are sequentially distributed.
Further, the air outlet 25 is aligned with the middle part of the sawtooth 14; the reason for this arrangement is that the applicant found that in the process of deicing, the crushed ice cut off is easily accumulated in the middle of the saw teeth 14, and therefore, by introducing the flowing gas into the middle of the saw teeth 14, the problem of the crushed ice accumulated in the middle of the saw teeth 14 can be solved to a certain extent, the saw teeth 14 are prevented from being stuck in the ice, and the deicing efficiency is improved.
Referring to fig. 3, the wind guide cover 20 includes a top cover 21, a first wind guide strip 22 and a second wind guide strip 23, and the first wind guide strip 22 and the second wind guide strip 23 are respectively located at two sides of the top cover 21;
the thicknesses of the first wind guide strips 22 and the second wind guide strips 23 are larger than that of the top cover 21;
further, the wind guide plate device further comprises a guide plate 30, wherein the guide plate 30 is rotatably connected with the front part of the first wind guide strip 22, and/or the guide plate 30 is rotatably connected with the front part of the second wind guide strip 23;
the flow deflector 30 is arranged to adjust the direction of the flowing gas blown out from the air outlet 25, so that the removed ice debris can be directionally blown and cleaned, and secondary cleaning is avoided; the thickness of the first wind guide strip 22 and the second wind guide strip 23 is larger than that of the top cover 21, and the guide vane 30 is connected to the first wind guide strip 22 or the second wind guide strip 23.
Further, referring to fig. 2, the heat transfer assembly 40 is provided with a heat sink, and the extending direction of the heat sink is parallel to the direction of the air guide hole 15; thus, the flowing gas is not damped to a great extent by the heat transfer member 40, and the heat generated is more easily removed.
Further, when it is desired to remove thick ice, a heat transfer assembly 40 having a first size is selected; when it is desired to remove thin ice, a heat transfer assembly 40 having a second size is selected, wherein the first size is greater than the second size.
Specifically, the heat transfer assembly 40 may be mounted on the cutting part 10 by a thermally conductive adhesive.
The first and second sizes herein refer to contact areas of the heat transfer member 40 with the cutting parts 10;
the above arrangement is made because the applicant found that the degree of influence of the heated flowing gas and the heated cutting portion on the deicing efficiency is different when removing thick ice and removing thin ice, specifically, the degree of influence of the heated cutting portion on the deicing efficiency is larger than that of the heated flowing gas when removing thick ice, and the degree of influence of the heated flowing gas on the deicing efficiency is larger than that of the heated cutting portion on the deicing efficiency when removing thin ice;
it is worth noting that the above findings are not readily apparent to the skilled person, on the basis of which the applicant has made an arrangement wherein the first dimension is larger than the second dimension.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The deicing device for the icing wind tunnel test is characterized by comprising a cutting part (10), an air guide cover (20), a heating assembly (41) and a heat transfer assembly (40), wherein the air guide cover (20) is arranged on the cutting part (10), and an air guide groove is formed between the air guide cover (20) and the cutting part (10); the heating assembly (41) and the heat transfer assembly (40) are accommodated in the air guide groove, the heat transfer assembly (40) is arranged on the cutting part (10), and the heating assembly (41) is arranged on the heat transfer assembly (40); the cutting tool further comprises a transition part (11) and a mounting part (12), wherein the transition part (11) is arranged between the mounting part (12) and the cutting part (10); the transition part (11) is provided with an air guide hole (15) facing the air guide groove.
2. The deicing device for the icing wind tunnel test according to claim 1, wherein a plane on which the mounting portion (12) is located and a plane on which the cutting portion (10) is located are parallel to and spaced apart from each other.
3. The deicing device for the icing wind tunnel test according to claim 2, wherein the wind guide groove comprises an air inlet (24) and an air outlet (25), and the sectional area of the air inlet (24) is larger than that of the air outlet (25).
4. The deicing device for the icing wind tunnel test according to claim 3, wherein the wind guide groove comprises a straight line section (L), a contraction section (S) and an expansion section (K) which are sequentially distributed in the direction from the wind inlet (24) to the wind outlet (25).
5. The deicing device for the icing wind tunnel test according to claim 4, wherein the wind guide cover (20) comprises a top cover (21), a first wind guide strip (22) and a second wind guide strip (23), and the first wind guide strip (22) and the second wind guide strip (23) are respectively located on two sides of the top cover (21).
6. The deicing device for the icing wind tunnel test according to claim 5, further comprising a deflector (30), wherein the deflector (30) is rotatably connected with the front portion of the first wind guide strip (22), and/or the deflector (30) is rotatably connected with the front portion of the second wind guide strip (23).
7. The deicing device for the icing wind tunnel test according to claim 6, wherein the heat transfer component (40) is provided with heat dissipation grooves, and the extension direction of the heat dissipation grooves is parallel to the direction of the air guide holes (15).
8. The deicing device for icing wind tunnel test according to claim 7, wherein when thick ice needs to be removed, a heat transfer assembly (40) having a first size is selected; when it is required to remove the thin ice, a heat transfer member (40) having a second size is selected, wherein the first size is larger than the second size, and the first size and the second size refer to a contact area of the heat transfer member (40) with the cutting part (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110167933.XA CN112498733B (en) | 2021-02-07 | 2021-02-07 | Deicing device for icing wind tunnel test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110167933.XA CN112498733B (en) | 2021-02-07 | 2021-02-07 | Deicing device for icing wind tunnel test |
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| CN112498733A CN112498733A (en) | 2021-03-16 |
| CN112498733B true CN112498733B (en) | 2021-04-16 |
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| CN113124819B (en) * | 2021-06-17 | 2021-09-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Monocular distance measuring method based on plane mirror |
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