CN211977321U - Air hot wire deicing cutting gun - Google Patents
Air hot wire deicing cutting gun Download PDFInfo
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- CN211977321U CN211977321U CN202020487766.8U CN202020487766U CN211977321U CN 211977321 U CN211977321 U CN 211977321U CN 202020487766 U CN202020487766 U CN 202020487766U CN 211977321 U CN211977321 U CN 211977321U
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- 238000005520 cutting process Methods 0.000 title claims abstract description 31
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides an air hot wire deicing cutting gun, which relates to the technical field of power system equipment and comprises a movable and static gun head, a nozzle and an air inlet pipe; the movable and static gun heads comprise gun seats and air passage rotating seats; the air passage rotary seat is arranged on the gun seat and is coaxially and rotatably connected with the gun seat; the nozzle is arranged on the air passage rotary seat; the air outlet end of the nozzle is oppositely arranged and is used for realizing the crossed arrangement of hot air flow sprayed by the nozzle; the joint of the air inlet pipe is communicated with the air passage rotary seat and is used for realizing hot air flow supply of the device. The utility model discloses a cut ice through the hot gas flow, need not carry out the strike of instrument or equipment, reduced the damage to power equipment, greatly reduced intensity of labour, and the hot gas flow has accelerated the melting of ice-cube, improved the efficiency of deicing greatly, the deicing is effectual; meanwhile, ice is cut by adopting hot air flow, equipment does not need to be cleared away by power failure, the working reliability of the transformer substation is greatly improved, and the ice cutting device is economical and practical and is worthy of wide popularization.
Description
Technical Field
The utility model relates to an electric power system equipment technical field, concretely relates to air hot wire deicing burning torch.
Background
The icing of the power transformation equipment means that a layer of thick ice is frozen on an insulation support, an exposed charged body, a mechanism kinematic pair and the like of the outdoor power transformation equipment due to weather reasons. Damage of ice attached to the power transformation equipment: the phenomena of creepage distance increase, insulation reduction, flashover or discharge conduction and the like can be caused by the ice adhesion of an insulating support and an exposed charged body of the power transformation equipment; the ice attached to the kinematic pair of the mechanism can cause the kinematic pair of the mechanism to be frozen into a whole, and the opening and closing actions or other required actions can not be realized, so that the operation can not be implemented.
The ice attached to the transformer equipment is usually removed by manual knocking, so that the labor intensity is high, the efficiency is low, the effect is poor, the equipment is easily damaged, the deicing requirement of the equipment cannot be met, certain parts need to be removed by power failure, the working reliability of the transformer substation is greatly reduced, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air hot wire deicing burning torch aims at solving and attaches the ice to substation equipment and cut the technical problem who leaves.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
an air hot wire deicing cutting gun comprises a movable gun head, a fixed gun head, a nozzle and an air inlet pipe;
the movable and static gun heads comprise gun seats and air passage rotating seats; the air passage rotary seat is arranged on the gun seat and is coaxially and rotatably connected with the gun seat; the nozzle is arranged on the air passage rotary seat; the air outlet end of the nozzle is oppositely arranged and is used for realizing the crossed arrangement of hot air flow sprayed by the nozzle;
the joint of the air inlet pipe is communicated with the air passage rotary seat and is used for realizing hot air flow supply of the device.
As a further improvement of the utility model, the gun seat is a hollow cavity structure; one end of the air passage swivel base is provided with an air inlet main channel communicated with the hollow cavity, and the other end of the air passage swivel base is provided with a branch channel communicated with the air inlet main channel;
the nozzles are respectively communicated with the branch channels; and the joint of the air inlet pipe is communicated with the hollow cavity.
As a further improvement of the present invention, one is the main air intake channel and two the branch channel forms the channel structure of the three-way structure, and the channel structure is formed by the new side channel structure of the T shape, the branch channel symmetry is established the both sides of the main air intake channel to realize the uniform distribution of the hot air flow.
As a further improvement of the utility model, the axial outer end of the air inlet main channel is a closed end; a plurality of air inlets are uniformly distributed on the radial side edge of the air inlet main channel pipe body.
As a further improvement of the utility model, the gun seat is also provided with a locking screw; the locking screw is in threaded connection with the gun seat and is axially arranged corresponding to the closed end of the air inlet main channel, and the locking screw can be axially abutted and limited against the closed end of the air inlet main channel by screwing to realize the relative positioning of the gun seat and the air channel rotary seat.
As a further improvement of the utility model, two nozzles are respectively arranged at two ends of the air passage swivel base in the diameter direction; the axes of the outlet pipe ends of the opposite nozzles are intersected.
As a further improvement of the utility model, a sealing component is arranged between the gun seat and the air passage swivel base; the sealing assembly comprises a fixed ring sleeve, a sealing felt ring, a bearing and a clamping ring; the fixed ring sleeve, the sealing felt ring, the bearing and the snap ring are sleeved on the air inlet main channel.
As a further improvement of the utility model, the fixed ring sleeve is positioned and installed with the gun seat through a screw; the bearing is a rolling bearing, the inner ring of the bearing is tightly matched with the air inlet main channel, and the outer ring of the bearing is tightly matched with the gun seat; the bearing is arranged between the shaft step and the clamping ring, and the bearing is limited.
As a further improvement of the utility model, the intake pipe is connected with the air pump through a pipeline, and the pipeline is further provided with a heater, thereby realizing the transportation of hot air flow.
As a further improvement of the utility model, a hand-held positioning device is also arranged; the handheld positioning device comprises a gun clamping hoop, a support and an insulating operating rod; the bayonet of the gun clamping hoop is clamped on the gun base; the connecting part at the outer end of the bayonet of the gun clamping hoop is arranged on the support through a bolt assembly; the insulating operating rod is detachably connected with the support.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has the advantages that the air outlet ends of the nozzles are oppositely arranged, the air flows of the nozzles are intersected, so that a crossed vertical hot air cutting line or an eccentric hot air cutting line can be obtained, and the crossed vertical hot air cutting line causes full-section cutting of attached ice; the eccentric hot air cutting line forms a rotating moment on the movable and static gun heads to rotate, so that a conical cutting line is obtained, and the blocky accumulated ice is cut off; ice is cut through hot air flow, tools or equipment do not need to be knocked, damage to electric power equipment is reduced, labor intensity is greatly reduced, melting of ice blocks is accelerated by the hot air flow, ice removing efficiency is greatly improved, and an ice removing effect is good; meanwhile, ice is cut by adopting hot air flow, equipment does not need to be cleared away by power failure, the working reliability of the transformer substation is greatly improved, and the ice cutting device is economical and practical and is worthy of wide popularization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
fig. 3 is a schematic view of a gun head mounting structure of the present invention;
fig. 4 is a schematic view of the internal structure of the air passage swivel mount of the present invention;
FIG. 5 is a side view of the airway swivel mount of the present invention;
fig. 6 is a schematic view of the gun base structure of the present invention;
fig. 7 is a side view of fig. 6 of the present invention;
fig. 8 is a schematic structural view of the gun locking hoop of the present invention;
fig. 9 is a side view of fig. 8 of the present invention;
fig. 10 is a schematic view of the support structure of the present invention;
fig. 11 is a side view of fig. 10 of the present invention;
the reference numbers in the figures illustrate:
1. moving and fixing the gun heads; 11. a gun seat; 12. airway rotation; 121. a main air intake passage; 1211. an air inlet; 122. a branch channel; 123. positioning a nut; 13. a locking screw; 14. a seal assembly; 141. fixing the loop; 142. sealing the felt ring; 143. a bearing; 144. a snap ring; 2. a nozzle; 3. an air inlet pipe; 4. a handheld positioning device; 41. a gun clamping hoop; 42. a support; 43. an insulating operating rod; 44. a bolt assembly.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Combine attached drawing 1 to 11, the utility model provides an air hot wire deicing burning torch aims at solving and attaches the ice to substation equipment and cut the technical problem who leaves.
Specifically, with reference to fig. 1, fig. 2 and fig. 3, the lance head comprises a movable lance head 1, a nozzle 2 and an air inlet pipe 3;
the dynamic and static gun head 1 comprises a gun seat 11 and an air channel rotating seat 12; the air passage rotary seat 12 is arranged on the gun seat 11 and is coaxially and rotatably connected with the gun seat 11; the nozzle 2 is arranged on the air passage rotary seat 12; the air outlet end of the nozzle 2 is oppositely arranged and is used for realizing the crossed arrangement of hot air flow sprayed out by the nozzle 12;
the joint of the air inlet pipe 3 is communicated with the air passage rotary base 12 and is used for realizing hot air flow supply of the device.
The utility model has the advantages that the air outlet ends of the nozzles are oppositely arranged, the air flows of the nozzles are intersected, so that a crossed vertical hot air cutting line or an eccentric hot air cutting line can be obtained, and the crossed vertical hot air cutting line causes full-section cutting of attached ice; the eccentric hot air cutting line forms a rotating moment on the movable and static gun heads to rotate, so that a conical cutting line is obtained, and the blocky accumulated ice is cut off; ice is cut through hot air flow, tools or equipment do not need to be knocked, damage to electric power equipment is reduced, labor intensity is greatly reduced, melting of ice blocks is accelerated by the hot air flow, ice removing efficiency is greatly improved, and an ice removing effect is good; meanwhile, ice is cut by adopting hot air flow, equipment does not need to be cleared away by power failure, the working reliability of the transformer substation is greatly improved, and the ice cutting device is economical and practical and is worthy of wide popularization.
The gun seat 11 is a hollow cavity structure; one end of the air passage swivel base 12 is provided with an air inlet main channel 121 communicated with the hollow cavity, and the other end of the air passage swivel base is provided with a branch channel 122 communicated with the air inlet main channel 121;
the nozzles 2 are respectively communicated with the branch passages 122; and the joint of the air inlet pipe 3 is communicated with the hollow cavity and is used for realizing hot air flow supply of the device.
In an embodiment, with reference to fig. 4 and fig. 5, one of the main intake channels 121 and two of the branch channels 122 form a channel structure with a three-way structure, and the branch channels 122 are symmetrically arranged on two sides of the main intake channel 121 by forming a new side channel structure with a "T" shape, so as to achieve uniform splitting of the hot gas flow.
It is to be noted that; the axial outer end of the air inlet main channel 121 is a closed end; a plurality of air inlets 1211 are uniformly distributed on the radial side edge of the tube body of the air inlet main channel 121.
Preferably, the joint of the intake pipe 3, the gun rest 11 and the axis of the main intake passage 121 are arranged in parallel, which allows a compact installation of the whole device.
The gun seat 11 is also provided with a locking screw 13; the locking screw 13 is in threaded connection with the gun seat 11 and is arranged in axial correspondence with the closed end of the main air inlet channel 121, and by screwing the locking screw 13, the axial abutment and the limit of the locking screw 13 and the closed end of the main air inlet channel 121 can be realized, so that the relative positioning arrangement of the gun seat 11 and the air passage rotary seat 12 can be realized; the structure realizes uniform air intake of the air passage rotary seat 12, and does not influence the relative positioning arrangement of the gun seat 11 and the air passage rotary seat 12 through the locking screw 13.
In an embodiment, with reference to fig. 3, fig. 6 and fig. 7, two nozzles 2 are respectively disposed at two ends of the air passage rotary seat 12 in a diameter direction; the axes of the outlet pipe ends of the opposite nozzles 2 are arranged in a crossed manner.
Preferably, the nozzle 2 is arranged on the movable and static gun heads 1; specifically, the air passage swivel base 12 is further provided with a positioning nut 123, and the positioning nut 123 is coaxially positioned with an opening communicated with the tail end of the branch passage 122; the nozzle 2 is connected with the positioning nut 123 by screw threads and then is arranged corresponding to the opening, so that the nozzle 2 is communicated with the branch passage 122.
A sealing assembly 14 is also arranged between the gun seat 11 and the air passage rotary seat 12; an internal high-pressure gas channel is established through the fabrication hole sealing bolt and the fabrication hole sealing bolt, so that the ice cutting machine has the functions of ventilation, rotation, support and the like, and the ice cutting operation under all working conditions is realized by matching with the locking bolt 13 of the movable and static gun heads 1.
Preferably, the seal assembly 14 includes a fixed ring collar 141, a seal felt ring 142, a bearing 143, and a snap ring 144; the fixed ring sleeve 141, the sealing felt ring 142, the bearing 143 and the snap ring 144 are sleeved on the air inlet main channel 121.
It should be noted that the fixing ring sleeve 141 is fixed to the gun platform by screws; the bearing 143 is a rolling bearing 143, an inner ring of the bearing 143 is tightly matched with the air inlet main channel 121, and an outer ring of the bearing 143 is tightly matched with the gun seat 11; the bearing 143 is arranged between the shaft step and the snap ring 144, so that the bearing 143 is limited.
The support, the location, the rotation, the sealing and other functions of the movable and static gun heads 1 are realized together.
The open end of the gun seat 11 is abutted and limited with an axial step on the air inlet main channel 121 of the air passage swivel base 12, and is used for sealing hot air flow in the gun seat 11.
The air inlet pipe 3 is connected with an air pump through a pipeline, and a heater is further arranged on the pipeline, so that hot air flow is conveyed.
In another embodiment, with reference to fig. 8, 9, 10 and 11, a handheld positioning device 4 is further provided; the handheld positioning device 4 comprises a gun clamping hoop 41, a support 42 and an insulating operating rod 43; the bayonet of the gun clamping hoop 41 is clamped on the gun base 11; the bayonet outer end connecting part of the clamping gun hoop 41 is arranged on the support 42 through a bolt assembly 44; the insulating operating rod 43 is detachably connected with the support 42; the insulating operating rod 43 is provided with the swing hinge support 42 to have functions of equipotential operation and ground potential operation, and the swing hinge support 42 has a function of adjusting the pitching and swinging of the air hot wire cutting gun.
The device has the advantages of simple structure, convenient installation and operation, repeated utilization, economy, practicality, convenient carrying and management, flexible use, reasonable design, compact structure and good market prospect.
The utility model can be carried to the working site for assembly when in use, the operation range of the whole assembly process is very small, the workers can finish the assembly on the ground, the workers do not need to climb, the safety of the whole installation and use process is high, time and labor are saved, the operation is very convenient, the safety of the workers is protected, and the working efficiency is greatly improved; the operation space is small, the application range is wide, the operation is simple, the device can be used in various occasions of the transformer substation, the maintenance is convenient, and the operation can be completed by one person. The volume is small, and the tool is very convenient to use and easy to carry; the tool is simple to use and operate, can be quickly used for deicing various types of equipment of the transformer substation, and is convenient and fast to maintain.
It should be noted that the detailed description of the present invention is not included in the prior art, or can be obtained directly from the market, and those skilled in the art can obtain the detailed description without creative efforts, and the detailed connection method has a very wide application in the field or daily life, and is not described in detail herein.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. An air hot wire deicing burning torch characterized in that: comprises a dynamic and static gun head, a nozzle and an air inlet pipe;
the movable and static gun heads comprise gun seats and air passage rotating seats; the air passage rotary seat is arranged on the gun seat and is coaxially and rotatably connected with the gun seat; the nozzle is arranged on the air passage rotary seat; the air outlet end of the nozzle is oppositely arranged and is used for realizing the crossed arrangement of hot air flow sprayed by the nozzle;
the joint of the air inlet pipe is communicated with the air passage rotary seat and is used for realizing hot air flow supply of the device.
2. An air hot wire deicing cutting gun according to claim 1, characterized in that: the gun seat is of a hollow cavity structure; one end of the air passage swivel base is provided with an air inlet main channel communicated with the hollow cavity, and the other end of the air passage swivel base is provided with a branch channel communicated with the air inlet main channel;
the nozzles are respectively communicated with the branch channels; and the joint of the air inlet pipe is communicated with the hollow cavity.
3. An air hot wire deicing cutting gun according to claim 2, characterized in that: the air inlet main channel and the two branch channels form a channel structure of a three-way structure, and the branch channels are symmetrically arranged on two sides of the air inlet main channel by forming a T-shaped new side channel structure to realize uniform distribution of hot air flow.
4. An air hot wire deicing cutting gun according to claim 2, characterized in that: the axial outer end of the air inlet main channel is a closed end; a plurality of air inlets are uniformly distributed on the radial side edge of the air inlet main channel pipe body.
5. An air hot wire deicing cutting gun according to claim 2, characterized in that: the gun seat is also provided with a locking screw; the locking screw is in threaded connection with the gun seat and is axially arranged corresponding to the closed end of the air inlet main channel, and the locking screw can be axially abutted and limited against the closed end of the air inlet main channel by screwing to realize the relative positioning of the gun seat and the air channel rotary seat.
6. An air hot wire deicing cutting gun according to claim 1, characterized in that: the two nozzles are respectively arranged at two ends of the air passage swivel base in the diameter direction; the axes of the outlet pipe ends of the opposite nozzles are intersected.
7. An air hot wire deicing cutting gun according to claim 2, characterized in that: a sealing component is also arranged between the gun seat and the air passage rotating seat; the sealing assembly comprises a fixed ring sleeve, a sealing felt ring, a bearing and a clamping ring; the fixed ring sleeve, the sealing felt ring, the bearing and the snap ring are sleeved on the air inlet main channel.
8. An air hot wire deicing cutting gun according to claim 7, characterized in that: the fixed ring sleeve is positioned and installed with the gun seat through a screw; the bearing is a rolling bearing, the inner ring of the bearing is tightly matched with the air inlet main channel, and the outer ring of the bearing is tightly matched with the gun seat; the bearing is arranged between the shaft step and the clamping ring, and the bearing is limited.
9. An air hot wire deicing cutting gun according to claim 1, characterized in that: the air inlet pipe is connected with the air pump through a pipeline, and a heater is further arranged on the pipeline, so that hot air flow is conveyed.
10. An air hot wire deicing cutting gun according to claim 1, characterized in that: a handheld positioning device is also arranged; the handheld positioning device comprises a gun clamping hoop, a support and an insulating operating rod; the bayonet of the gun clamping hoop is clamped on the gun base; the connecting part at the outer end of the bayonet of the gun clamping hoop is arranged on the support through a bolt assembly; the insulating operating rod is detachably connected with the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020487766.8U CN211977321U (en) | 2020-04-03 | 2020-04-03 | Air hot wire deicing cutting gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020487766.8U CN211977321U (en) | 2020-04-03 | 2020-04-03 | Air hot wire deicing cutting gun |
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| Publication Number | Publication Date |
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| CN211977321U true CN211977321U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020487766.8U Active CN211977321U (en) | 2020-04-03 | 2020-04-03 | Air hot wire deicing cutting gun |
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| CN (1) | CN211977321U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336734A (en) * | 2020-04-03 | 2020-06-26 | 国网安徽省电力有限公司安庆供电公司 | Air hot wire deicing cutting gun |
| CN112629093A (en) * | 2021-03-09 | 2021-04-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for removing ice growing on surface of film hot knife and model |
-
2020
- 2020-04-03 CN CN202020487766.8U patent/CN211977321U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336734A (en) * | 2020-04-03 | 2020-06-26 | 国网安徽省电力有限公司安庆供电公司 | Air hot wire deicing cutting gun |
| CN112629093A (en) * | 2021-03-09 | 2021-04-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for removing ice growing on surface of film hot knife and model |
| CN112629093B (en) * | 2021-03-09 | 2021-07-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for removing ice growing on surface of film hot knife and model |
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