Hollow additive blade flow test tool

Abstract

The utility model provides a hollow additive blade flow test tool, which comprises an upper clamping piece, a lower clamping piece and a locking structure, and is characterized in that the locking structure is used for locking the upper clamping piece and the lower clamping piece so as to vertically clamp and fix a blade between the upper clamping piece and the lower clamping piece; the locking structure can be operated to be unlocked so that the blade can be taken out from the position between the upper clamping piece and the lower clamping piece. The lower clamping piece is provided with an air blowing hole aligned with an inner cavity of the blade, a flow stabilizing cavity is formed in the lower clamping piece, an air supply hole is formed in the outer wall of the lower clamping piece, and the air supply hole is communicated with the air blowing hole through the flow stabilizing cavity; the upper sealing piece is used for being cushioned between the upper clamping piece and the top of the blade so as to seal an opening in the top of the blade; the first lower sealing piece is used for being arranged between the bottom face of the blade and the lower clamping piece in a cushioned mode. The hollow additive blade flow testing tool is simple in structure, easy to machine, manufacture, operate and use, and capable of effectively reducing the detection cost and improving the detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of additive materials, in particular to a flow testing tool for a hollow additive blade. Background Art

[0002] Additive manufacturing technology is also known as 3D printing technology. The hollow blades manufactured using this technology are important components of aircraft engines and gas turbines. These blades usually work in high-temperature and harsh environments. Protective coatings alone are not enough. A uniform cooling film must be formed on the surface of the blade during operation to effectively protect the blade. For this reason, gas flow tests are required after the blades are formed to detect whether sufficient cooling film can be formed on the surface of the blades.

[0003] At present, blade flow testing needs to be carried out through customized special experimental equipment. The equipment occupies a large area, has high construction costs, and is not very versatile. At the same time, the operation is cumbersome and the detection takes a long time. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a hollow additive blade flow test tooling which helps to reduce the detection cost and improve the detection efficiency.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] A flow test tool for a hollow additive blade, comprising:

[0007] An upper clamping member, a lower clamping member and a locking structure, wherein the locking structure is used to lock the upper clamping member and the lower clamping member to vertically clamp and fix the blade between the upper clamping member and the lower clamping member, and the locking structure can be operated to unlock so that the blade can be taken out from between the upper clamping member and the lower clamping member; the lower clamping member is provided with a blowing hole aligned with the inner cavity of the blade, the lower clamping member is provided with a stabilizing cavity, and the outer wall of the lower clamping member is provided with an air supply hole, and the air supply hole is communicated with the blowing hole through the stabilizing cavity;

[0008] An upper sealing member, used for being cushioned between the upper clamping member and the top of the blade to close the opening at the top of the blade;

[0009] The first lower sealing member is used to be cushioned between the bottom surface of the blade and the lower clamping member.

[0010] Preferably, a positioning boss adapted to the bottom opening of the blade is provided on the lower clamping member, and the blowing hole passes through the positioning boss.

[0011] Preferably, it further comprises a second lower sealing member, wherein the second lower sealing member is used to be cushioned between the stepped surface inside the blade and the bottom surface of the positioning boss.

[0012] Preferably, the upper sealing member has a boss portion adapted to the top opening of the blade.

[0013] Preferably, the locking structure is a flange locking structure.

[0014] Preferably, an air pipe joint is provided on the lower clamping member at the air supply hole.

[0015] Preferably, the air pipe joint is detachably threaded onto the lower clamping member.

[0016] The beneficial effects of the utility model are as follows: when the hollow material-added blade flow test tool provided by the utility model is used, the blade can be placed between the upper clamping part and the lower clamping part, the upper sealing part can be cushioned between the upper clamping part and the top of the blade, so as to close the opening at the top of the blade, and the first lower sealing part closes the gap between the bottom surface of the blade and the lower clamping part, and the upper clamping part and the lower clamping part can be locked by the locking structure, so as to fix the blade between the upper clamping part and the lower clamping part, and the air supply hole on the lower clamping part can be connected to the external compressed air source, and after the airflow enters from the air supply hole, it will It first enters the steady flow chamber and then flows to the blowing hole. The steady flow chamber can rectify the airflow, making the airflow entering the blade from the blowing hole more uniform and stable. The airflow entering the blade is then discharged through the air holes on the blade. Therefore, stable and accurate test data can be obtained through corresponding pressure gauges, flow meters and other measuring instruments. After the test is completed, the blade can be taken out from between the upper clamp and the lower clamp by unlocking the locking structure. The hollow additive blade flow test fixture has a simple structure, is easy to manufacture and operate, and can effectively reduce the test cost and improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a structural diagram of a preferred embodiment of the utility model;

[0019] Figure 2 This is a structural diagram of the preferred embodiment of the utility model in the application state;

[0020] Figure 3 It is a decomposition structure diagram of the preferred embodiment of the utility model in the application state;

[0021] Figure 4 It is a decomposition structure diagram from another perspective when the preferred embodiment of the utility model is in application state;

[0022] Figure 5 It is a cross-sectional structural diagram of the preferred embodiment of the utility model in the application state.

[0023] Among them, the reference numerals in the figure are:

[0024] 10. Upper clamping member; 20. Lower clamping member; 21. Blowing hole; 22. Flow stabilization chamber; 23. Air supply hole; 24. Positioning boss; 25. Air pipe joint; 31. Upper sealing member; 311. Boss portion; 32. First lower sealing member; 33. Second lower sealing member; 41. Flange hole; 42. Flange bolt; 50. Blade. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 5The preferred embodiment of the utility model provides a hollow additive blade flow test tool, including: an upper clamping member 10, a lower clamping member 20 and a locking structure, the locking structure is used to lock the upper clamping member 10 and the lower clamping member 20 to vertically clamp and fix the blade 50 between the upper clamping member 10 and the lower clamping member 20, and the locking structure can be operated to unlock so that the blade 50 can be taken out from between the upper clamping member 10 and the lower clamping member 20; the lower clamping member 20 is provided with a blowing hole 21 aligned with the inner cavity of the blade 50, the lower clamping member 20 is provided with a steady flow cavity 22, and the outer wall of the lower clamping member 20 is provided with an air supply hole 23, and the air supply hole 23 is connected with the blowing hole 21 through the steady flow cavity 22; an upper sealing member 31 is used to be cushioned between the upper clamping member 10 and the top of the blade 50 to close the top opening of the blade 50; a first lower sealing member 32 is used to be cushioned between the bottom surface of the blade 50 and the lower clamping member 20. The hollow material-added blade flow test tool provided by the utility model can be used to place the blade 50 between the upper clamping member 10 and the lower clamping member 20, and the upper sealing member 31 can be arranged between the upper clamping member 10 and the top of the blade 50, so as to close the top opening of the blade 50, and the first lower sealing member 32 closes the gap between the bottom surface of the blade 50 and the lower clamping member 20, and the upper clamping member 10 and the lower clamping member 20 can be locked by the locking structure, so as to fix the blade 50 between the upper clamping member 10 and the lower clamping member 20, and the air supply hole 23 on the lower clamping member 20 can be connected to the external compressed air source, and the airflow enters from the air supply hole 23. , will first enter the steady flow chamber 22 and then flow to the blowing hole 21. The steady flow chamber 22 can have a rectifying effect on the airflow, so that the airflow entering the inside of the blade 50 from the blowing hole 21 is more uniform and stable. The airflow entering the blade 50 is then discharged through the air holes on the blade 50. Therefore, stable and accurate detection data can be obtained through corresponding pressure gauges, flow meters and other measuring instruments. After the detection is completed, the blade 50 can be taken out from between the upper clamp 10 and the lower clamp 20 by unlocking the locking structure. The hollow additive blade flow test tooling has a simple structure, is easy to manufacture and operate, and can effectively reduce detection costs and improve detection efficiency.

[0029] In general tests, measuring instruments such as pressure gauges and flow meters are generally set between the compressed air and the air supply hole 23, and the blade 50 is indirectly detected by detecting the air flow change here.

[0030] As a preferred embodiment of the utility model, it may also have the following additional technical features:

[0031] In this embodiment, the air supply hole 23 and the air blowing hole 21 are respectively arranged at the upper and lower ends of the flow stabilizing chamber 22, so that the flow stabilizing chamber 22 can more fully stabilize the airflow. In other embodiments, the positions of the air blowing hole 21 and the air supply hole 23 can be flexibly adjusted as needed. The flow stabilizing chamber 22 usually adopts a regular cavity with a larger size, such as a cylindrical cavity in this embodiment. In other embodiments, the flow stabilizing chamber 22 can also adopt other suitable shapes.

[0032] In this embodiment, a positioning boss 24 is provided on the lower clamping member 20 and is adapted to the bottom opening of the blade 50, and the blowing hole 21 passes through the positioning boss 24, thereby enabling the blade 50 to be accurately positioned to prevent the blade 50 from being skewed and misplaced, and can effectively ensure the normal progress of the detection operation and the accuracy of the detection results, and also facilitate the disassembly and assembly positioning operations of the blade 50.

[0033] In this embodiment, a second lower seal 33 is also included. The second lower seal 33 is used to be cushioned between the stepped surface inside the blade 50 and the bottom surface of the positioning boss 24. This can improve the sealing effect and ensure the accuracy of the detection result on the one hand, and reduce the scratch between the blade 50 and the lower clamping member 20 on the other hand, thereby providing good protection for the blade 50.

[0034] In this embodiment, the upper seal 31 has a boss portion 311 adapted to the top opening of the blade 50, so that the relative position between the upper seal 31 and the blade 50 can be well positioned to prevent the blade 50 from being misaligned relative to the upper seal 31, thereby ensuring the sealing effect. In addition, since the upper seal 31 is cushioned between the upper clamp 10 and the blade 50, the scratches between the blade 50 and the upper clamp 10 can also be reduced, and the blade 50 can be better protected.

[0035] In this embodiment, the upper seal 31, the first lower seal 32 and the second lower seal 33 all adopt rubber pads, which can play a good role in sealing and protecting the blade 50, wherein the first lower seal 32 and the second lower seal 33 are both annular in shape to avoid clogging the blowing hole 21. In other embodiments, the upper seal 31, the first lower seal 32 and the second lower seal 33 can also be made of other suitable sealing materials such as silicone, resin, etc., and their shapes can also be flexibly adjusted according to needs, but are not limited to this.

[0036] In this embodiment, the locking structure is a flange locking structure, specifically, a plurality of flange holes 41 are respectively provided on the upper clamping member 10 and the lower clamping member 20, and the upper clamping member 10 and the lower clamping member 20 are locked by flange bolts 42, and the connection is firm, capable of withstanding a large air pressure, and convenient for processing, manufacturing and use. In other embodiments, the locking structure may also use other commonly used structures such as a snap-on structure and a buckle structure, and is not limited thereto.

[0037] In this embodiment, an air pipe connector 25 is provided on the lower clamping member 20 at the air supply hole 23, so that it is convenient to connect with an external compressed air source and is easy to use.

[0038] In this embodiment, the air pipe connector 25 is detachably screwed to the lower clamping member 20, so that it is convenient to replace the air pipe connector 25 of different sizes as needed, which is more flexible and convenient.

[0039] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0040] The above description is only a preferred implementation mode of the present utility model. Any technical solution that achieves the purpose of the present utility model by basically the same means belongs to the protection scope of the present utility model.

Claims

1. A flow test tool for a hollow additive blade, characterized in that: include: An upper clamping member (10), a lower clamping member (20) and a locking structure, wherein the locking structure is used to lock the upper clamping member (10) and the lower clamping member (20) so as to vertically clamp and fix the blade (50) between the upper clamping member (10) and the lower clamping member (20), and the locking structure can be operated to unlock so that the blade (50) can be taken out from between the upper clamping member (10) and the lower clamping member (20); the lower clamping member (20) is provided with a blowing hole (21) aligned with the inner cavity of the blade (50), the lower clamping member (20) is provided with a flow stabilizing cavity (22), and the outer wall of the lower clamping member (20) is provided with an air supply hole (23), and the air supply hole (23) is communicated with the blowing hole (21) through the flow stabilizing cavity (22); An upper sealing member (31) is used to be cushioned between the upper clamping member (10) and the top of the blade (50) to close the top opening of the blade (50); The first lower sealing member (32) is used to be cushioned between the bottom surface of the blade (50) and the lower clamping member (20).

2. A hollow additive blade flow test tool according to claim 1, characterized in that: The lower clamping piece (20) is provided with a positioning boss (24) adapted to the bottom opening of the blade (50), and the blowing hole (21) passes through the positioning boss (24).

3. A flow test tool for a hollow additive blade according to claim 2, characterized in that: It also includes a second lower sealing member (33), which is used to be cushioned between the stepped surface inside the blade (50) and the bottom surface of the positioning boss (24).

4. The hollow additive blade flow test tool according to claim 1, characterized in that: The upper sealing member (31) has a boss portion (311) adapted to fit the top opening of the blade (50).

5. The hollow additive blade flow test tool according to claim 1, characterized in that: The locking structure is a flange locking structure.

6. The hollow additive blade flow test tool according to claim 1, characterized in that: An air pipe joint (25) is provided on the lower clamping piece (20) at the air supply hole (23).

7. A flow test tool for a hollow additive blade according to claim 6, characterized in that: The air pipe joint (25) is detachably screwed onto the lower clamping member (20).

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