Cooling switching tool

Abstract

The cooling switching tool arranged between the aero-engine and the air extractor comprises a switching body and a flow separation plate, the switching body comprises a first opening and a second opening, the first opening is connected with the aero-engine, the second opening is connected with the air extractor, a circulation channel is formed in the switching body, and an air inlet hole is further formed in the switching body; the flow separation plate is movably arranged on the adapter body and used for adjusting the opening degree of the air inlet hole. According to the cooling switching tool, air exhaust airflow can be guided through the circulation channel, rapid cooling of an engine is achieved, the airflow flow and the airflow speed are changed by adjusting the opening degree of the air inlet holes through the flow separation plate, then the cooling effect is effectively adjusted, and the air exhaust device has good adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aero-engine, specifically relates to the cooling field of aero-engine. BACKGROUND

[0002] After the test, although the aero-engine has stopped, it will be in a high temperature state. In order to realize that the aero-engine can be cooled in a short time after the test, the usual method is to increase an air extraction device at the tail to forcibly convection cool the engine, but the power of the air extraction device has a high requirement, and too large power will cause waste, and too small power is difficult to gather airflow, and the overall cooling efficiency is low. SUMMARY

[0003] An object of the utility model is to provide a cooling adapter tool, which can effectively adjust the cooling effect.

[0004] To achieve the cooling adapter tool of the above purpose is arranged between the aero-engine and the air extraction device, including adapter body and flow partition plate, the adapter body includes first opening and second opening, the first opening is connected with the aero-engine, the second opening is connected with the air extraction device, the flow passage is formed in the adapter body, and the air inlet hole is also arranged on the adapter body;The flow partition plate is movably arranged on the adapter body and is used for adjusting the opening degree of the air inlet hole.

[0005] In one or more embodiments, the adapter body is conical, and the diameter of the adapter body gradually decreases from the first opening to the second opening.

[0006] In one or more embodiments, the tangent direction of the air inlet hole is consistent with the airflow direction at the air inlet hole, or forms an included angle less than 15°.

[0007] In one or more embodiments, the tool further includes an inner side pipe wall arranged in the adapter body, and the inner side pipe wall and the adapter body surround the flow passage.

[0008] In one or more embodiments, the adapter body and the inner side pipe wall are both conical pipe walls.

[0009] In one or more embodiments, the flow partition plate is arranged to rotate along the circumference of the adapter body.

[0010] In one or more embodiments, the adapter body is provided with a hole slot, the flow partition plate is provided with a handle, and the handle extends out of the hole slot.

[0011] In one or more embodiments, the adapter body is further provided with a limiting piece for fixing the flow partition plate.

[0012] In one or more embodiments, the tooling further comprises an elongated section disposed at the second open side.

[0013] In one or more embodiments, the elongated section is cylindrical.

[0014] The cooling adapter tooling described above can guide the air flow of the air extraction device through the flow channel to achieve rapid cooling of the engine. The flow barrier changes the air flow and air flow speed by adjusting the opening degree of the air inlet hole, thereby effectively adjusting the cooling effect and making the air extraction device have better adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other features, properties, and advantages of the present application will become more apparent through the following description with reference to the accompanying drawings and embodiments.

[0016] Figure 1 is a schematic view of the cooling adapter tooling;

[0017] Figure 2 is a schematic view of the inner tube wall and the flow barrier;

[0018] Figure 3A is a front view of the cooling adapter tooling;

[0019] Figure 3B is a left view of the cooling adapter tooling;

[0020] Figure 3C is an oblique view of the cooling adapter tooling;

[0021] Figure 4 is a schematic view of the setting position of the cooling adapter tooling, the aero-engine, and the air extraction device;

[0022] Figure 5 is a schematic view of the axial cross-section of the cooling adapter tooling;

[0023] Figure 6 is a schematic view of the flow barrier.

[0024] REFERENCE SIGNS

[0025] 1 adapter body

[0026] 2 flow barrier

[0027] 3 air inlet hole

[0028] 4 limiting piece

[0029] 5 hole and groove

[0030] 6 inner tube wall

[0031] 8 elongated section

[0032] 11 first opening

[0033] 12 second opening

[0034] 13 rotating ball

[0035] 14 ball track

[0036] 20 handle

[0037] 100 flow channel DETAILED DESCRIPTION

[0038] The utility model will be further described below in combination with specific embodiments and drawings, and more details are set forth in the following description so as to fully understand the utility model, but the utility model can obviously be implemented in various other ways different from the description, and those skilled in the art can make similar generalization and deduction according to actual application conditions without departing from the connotation of the utility model, therefore the protection scope of the utility model should not be limited by the content of the specific embodiments.

[0039] It should be noted that these and other subsequent drawings are merely examples, are not drawn according to the condition of the same scale, and should not be used as a limitation on the protection scope actually required by the utility model.

[0040] The turbofan engine needs to complete multiple engine test tasks. For example, the test of aerodynamic performance verification. After the test, although the aero-engine has been stopped, it will be in a high temperature state, and for the design imperfect engine, the high pressure rotor will be stuck, for the mature engine, it will also cause the work of taking oil, turning the disc, hole inspection, etc. It is not suitable to carry out, and there is a safety hazard of personnel scalding. Therefore, the aero-engine needs to be effectively cooled.

[0041] The existing mode is to increase the air extraction device at the tail of the engine tail nozzle to carry out forced convection cooling on the engine, and a cooling adapter tool needs to be arranged between the aero-engine and the air extraction device, which can converge and adjust the air extraction airflow, adapt to the heat exchange efficiency of the engine internal flow channel, and avoid damage of the air extractor when the pressure ratio is too large.

[0042] Referring to Figures 1 to 5 As shown, the cooling adapter tool includes an adapter body 1 and a flow separation plate 2. The adapter body 1 includes a first opening 11 and a second opening 12, the first opening 11 is connected with the aero-engine A, and the second opening 12 is connected with the air extraction device B, as shown in Figure 4 The flow channel 100 is formed in the adapter body.

[0043] In some embodiments, the adapter body 1 is tapered, and the diameter of the adapter body gradually decreases from the first opening 11 to the second opening 12. In the case of the adapter tool gradually decreasing in diameter in the forward direction, the flow area is expanded in the radial direction, the static pressure at the inlet of the adapter tool is aerodynamically reduced, and the outflow of the gas flow of the engine section is promoted.

[0044] The adapter body 1 adopts a hollow design. Since the temperature of the gas flow in the extraction section is generally low, the hollow design will not cause thermal deformation of the tool, and at the same time, the weight of the adapter tool is reduced, which facilitates its disassembly and installation. An inner side wall 6 can also be provided inside the adapter body 1, and the inner side wall 6 and the adapter body 1 surround a flow passage 100. In Figure 4 In the embodiments shown, the adapter body 1 and the inner side wall 6 are both tapered walls. When the air extractor is turned on, a gas flow field is established in the adapter tool due to the pressure difference, at which time the first opening 11 of the adapter tool is directly opposite the engine inner duct, accelerating the flow of the engine inner duct and improving the heat exchange efficiency.

[0045] The end of the inner side wall 6 adopts a profile similar to that of the engine inner duct nozzle, so that the annular gas flow channel surrounded by the inner side wall 6 and the adapter body 1 is matched with the engine tail gas flow channel. This allows the adapter tool to be as close to the engine as possible without interference, avoids interference with the engine end during installation, reduces air extraction gas flow loss, and ensures the efficiency of convective heat exchange.

[0046] The adapter body 1 is provided with air inlet holes 3, which are arranged circumferentially around the adapter body 1. The tangential direction of the air inlet holes should be as close as possible to the direction of the gas flow, for example, the tangential direction of the air inlet holes is consistent with the direction of the gas flow at that point, or forms an angle of less than 15°.

[0047] The flow partition plate 2 is movably arranged on the adapter body 1, and is used to adjust the opening degree of the air inlet hole 3, thereby changing the actual flow area of the air inlet hole and adjusting the outflow amount of the gas flow through the air inlet hole 3. As Figure 3A shown, the flow partition plate 2 is an elongated plate, and the circumferential position of the flow partition plate 2 is adjusted, thereby adjusting the shielding area of the air inlet hole 3. Limiting members 4 such as limit bolts can also be provided to fix the flow partition plate 2, preventing it from sliding during air extraction.

[0048] In some embodiments, the flow partition plate is arranged to rotate along the circumference of the adapter body. For example, the adapter body 1 is provided with a hole slot 5, and the flow partition plate 2 is provided with a handle 20, which extends out of the hole slot 5, so as to facilitate the rotation of the flow partition plate and the handle by the staff, thereby adjusting the position of the flow partition plate 2. The adapter body 1 is also provided with a flow partition plate rotating ball 13 and a ball rail 14, as Figure 5 and Figure 6As shown, the handle 20 is arranged at the two ends of the flow barrier 2 along the airflow direction. Due to the existence of the rotating ball 13 and the ball track 14, the handle 20 can rotate the flow barrier 2 along the X direction easily, avoiding the abrasion of the inner and outer walls of the adapter tool, and prolonging the service life of the tool.

[0049] In some embodiments, the tool further comprises an extension section 8 arranged at the side of the second opening 12, so that the airflow in the suction section can be better converged in the adapter tool and as close as possible to the air extractor. In the illustrated embodiment, the extension section 8 is in the shape of a cylinder.

[0050] The above-mentioned cooling adapter tool has the following advantages:

[0051] (1) The adapter tool is arranged between the aero-engine and the air extractor, and the inner ring at the side of the first opening is designed in the shape of an imitation engine nozzle, avoiding interference during installation, and the extension section is arranged at the second opening, so that the airflow in the suction section can be better converged in the adapter tool;

[0052] (2) The internal aerodynamic profile of the tool adapter body can converge the airflow, realize the rapid cooling of the engine, guide the airflow of the air extractor, and improve the convection heat exchange efficiency inside the engine;

[0053] (3) The flow area of the inlet hole can be changed to adjust the airflow, prevent the air extractor from being damaged, and at the same time, the flow area can be changed to increase the airflow speed, shorten the cooling time, and adjust the cooling efficiency.

[0054] It should be noted that the above content uses the words "first", "second", etc. to limit the parts, which is only for the convenience of distinguishing the corresponding parts. If there is no further declaration, the above words have no special meaning, and therefore cannot be understood as limiting the protection scope of the present application.

[0055] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each part itself.

[0056] Also, certain terminology has been used in the description for the purpose of reference only. As one skilled in the art will appreciate, the terms "one embodiment," "an embodiment,” "some embodiments,” and "one alternative” are not intended to refer to the same embodiments or to a single alterative unless explicitly so identified. Rather, the terms are used solely to distinguish different embodiments. Moreover, the use of the terms first, second, etc., merely designate the different steps in the methods for purposes of clarity and are not intended to be limiting.

[0057] The utility model discloses although the above-mentioned preferable embodiment is disclosed, but it is not used to limit the utility model, and any person skilled in the art can make possible change and modification without departing from the spirit and scope of the utility model. Therefore, all the modifications, equivalent changes and modifications of the above embodiment according to the technical essence of the utility model, all fall into the protection scope defined in the utility model claim.

Claims

1. A cooling adapter tool disposed between an aeroengine and a bleed air device, characterized in that, The application relates to a tool for connecting an aero-engine with a bleed device, comprising: a connecting body, which comprises a first opening connected with the aero-engine and a second opening connected with the bleed device, and which is internally formed with a flow passage, and which is further provided with an air inlet hole; and a flow barrier, which is movably arranged on the connecting body and used for adjusting the opening degree of the air inlet hole.

2. The cooling adapter tool of claim 1, wherein, The connecting body is conical, and the diameter of the connecting body gradually decreases from the first opening to the second opening.

3. The cooling adapter tool of claim 1, wherein, The tangent direction of the air inlet hole is consistent with the airflow direction at the air inlet hole, or forms an included angle of less than 15 degrees.

4. The cooling adapter tool of claim 1, wherein, The tool further comprises an inner pipe wall arranged inside the connecting body, and the inner pipe wall and the connecting body surround the flow passage.

5. The cooling adapter tool of claim 4, wherein, The connecting body and the inner pipe wall are both conical pipe walls.

6. The cooling adapter tool of claim 5, wherein, The flow barrier is arranged to rotate along the circumference of the connecting body.

7. The cooling adapter tool of claim 6, wherein, The connecting body is provided with a hole slot, and the flow barrier is provided with a handle which extends out of the hole slot.

8. The cooling adapter tool of claim 6, wherein, The connecting body is further provided with a limiting piece for fixing the flow barrier.

9. The cooling adapter tool of claim 1, wherein, The tool further comprises an extension section arranged at the side of the second opening.

10. The cooling adapter tool of claim 9, wherein, The extension section is cylindrical.

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