Clamping tool for flow and distribution test of spray rod

Abstract

The invention discloses a clamping tool for a flow and distribution test of a spray rod. The clamping tool comprises a bottom plate; the switching assembly is fixedly arranged at one end of the top surface of the bottom plate; the plugging assembly is fixedly arranged at the other end of the top surface of the bottom plate; the first oil collecting assemblies are arranged on the bottom plate and distributed on the two sides of the spraying rod; the second oil collecting assemblies are arranged on the bottom plate and distributed on the two sides of the spraying rod. The clamping tool is convenient to operate and high in test efficiency, test media sprayed out of the densely-distributed spray holes are independently collected, the oil return problem at the spray holes is avoided, and the accuracy of test detection is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of spray bar detection, and particularly to a clamping tool for flow and distribution tests of a spray bar. Background Art

[0002] The spray bar is an important component of an aeroengine. After the spray bar is processed and formed, it is necessary to conduct flow and distribution tests on it to detect whether its performance meets the design requirements. For example, Figure 1 and Figure 2 as shown in the spray bar, a first oil passage and a second oil passage are arranged therein from one end to the other end, and a plurality of spray holes respectively communicating with the first oil passage and the second oil passage are formed in the spray bar. The distance between some of the spray holes connected to the first oil passage is small, and it is difficult to collect the test medium ejected from each dense spray hole by a separate pipeline during the test. Moreover, the existing test equipment uses thin pipes to dock with the spray holes to collect the test medium, which is prone to oil backflow, resulting in low accuracy of the test results. Summary of the Invention

[0003] In view of the above defects or deficiencies in the prior art, it is desirable to provide a clamping tool for flow and distribution tests of a spray bar, which is convenient to operate, has high test efficiency, realizes the separate collection of the test medium ejected from the densely distributed spray holes, avoids the oil backflow problem at the spray holes, and ensures the accuracy of the test detection.

[0004] A clamping tool for flow and distribution tests of a spray bar provided by the present invention includes:

[0005] A bottom plate;

[0006] An adapter assembly, fixedly arranged at one end of the top surface of the bottom plate, for sealingly connecting one end of the oil passage to be detected to the test equipment;

[0007] A plugging assembly, fixedly arranged at the other end of the top surface of the bottom plate, for plugging the other end of the oil passage to be detected;

[0008] A first oil collection assembly, arranged on the bottom plate and distributed on both sides of the spray bar, for separately collecting the detection media ejected from the densely distributed spray holes on both sides of the spray bar, and a gap is left between the first oil collection assembly and the corresponding spray holes;

[0009] A second oil collection assembly, arranged on the bottom plate and distributed on both sides of the spray bar, for separately collecting the detection media ejected from the non-densely distributed spray holes on both sides of the spray bar, and a gap is left between the second oil collection assembly and the corresponding spray holes.

[0010] Furthermore, the adapter assembly includes an adapter seat fixedly arranged on one end of the top surface of the base plate, a docking groove is provided on the top of the adapter seat close to the sealing assembly, and an adapter is fixedly connected to the other side, the adapter is connected to the docking groove through a first through hole, a sealing ring is embedded in the docking groove on the outer periphery of the first through hole, and the docking joint is connected to the output end of the test equipment through a hose.

[0011] Furthermore, the sealing assembly includes a sealing seat fixedly arranged at the other end of the top surface of the base plate, and a screw hole is opened on the sealing seat in the horizontal direction. A screw rod is threaded through the screw hole, and one end of the screw rod close to the adapter assembly is rotatably connected to a plug adapted to the end of the spray rod, and the other end is provided with a wrench clamp, and the plug is made of polytetrafluoroethylene material.

[0012] Furthermore, the first oil collecting assembly includes an oil collecting box fixedly arranged on the top surface of the base plate and distributed on both sides of the spray rod. One side of the oil collecting box is close to the surface of the spray rod and is provided with oil inlet holes corresponding to the densely distributed spray holes. The gap between the oil inlet holes and the corresponding spray holes is 0.1-1mm. The radius of the oil inlet hole is larger than the radius of the corresponding spray hole and smaller than half of the center distance between the corresponding spray hole and the adjacent spray holes. The bottom of the oil collecting box is fixedly connected with oil outlet pipes corresponding to the oil inlet holes, and each of the oil inlet holes is connected to the corresponding oil outlet pipe through independent oil passages.

[0013] Furthermore, the second oil collecting assembly includes a plurality of oil collecting pipes arranged on both sides of the spray rod in a one-to-one correspondence with the sparsely distributed spray holes, and the bottom plate is provided with second through holes corresponding to the oil collecting pipes. The bottom end of the oil collecting pipe slides through the corresponding second through hole, and the top end is bent and extends toward the corresponding spray hole. The top end of the oil collecting pipe is coaxial with the corresponding spray hole, and the gap is 0.2-1.5mm. The outer side of the bottom plate is provided with corresponding top screws extending into the second through holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The clamping tool of the present invention is provided with an adapter assembly, a plugging assembly, a first oil collection assembly and a second oil collection assembly. The spray rod is clamped by the adapter assembly and the plugging assembly; the adapter assembly seals one end of the oil circuit to be tested with the test equipment, and the plugging assembly plugs the other end of the oil circuit to be tested; the first oil collection assembly separately collects the test medium sprayed from the densely distributed spray holes on both sides of the spray rod; the second oil collection assembly separately collects the test medium sprayed from the sparsely distributed spray holes on both sides of the spray rod, which is convenient to operate and has high test efficiency, and realizes the separate collection of the test medium sprayed from the densely distributed spray holes. A gap is left between the first oil collection assembly and the corresponding spray hole, and a gap is left between the second oil collection assembly and the corresponding spray hole, which avoids the oil return problem at the spray hole and ensures the accuracy of the test detection.

[0016] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 is a schematic diagram of the structure of the spray boom;

[0019] Figure 2 is a schematic diagram of the cross-sectional structure of the spray boom;

[0020] Figure 3 It is a structural schematic diagram of the clamping tooling;

[0021] Figure 4 It is a structural schematic diagram of the oil collecting tank;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the oil collecting tank;

[0023] Figure 6 It is a structural schematic diagram of the spray boom being installed on the clamping fixture;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the spray boom installed on the clamping fixture.

[0025] Numbers in the figure: 1, bottom plate; 2, adapter assembly; 3, plugging assembly; 4, first oil collection assembly; 5, second oil collection assembly; 6, spray rod;

[0026] 11. A second through hole;

[0027] 21. adapter seat; 22. docking groove; 23. adapter; 24. first through hole; 25. sealing ring;

[0028] 31. Plugging seat; 32. Screw hole; 33. Screw rod; 34. Plug; 35. Wrench chuck

[0029] 41. Oil collecting tank; 42. Oil inlet hole; 43. Oil outlet pipe; 44. Oil passage

[0030] 51. Oil collecting pipe; 52. Set screw

[0031] 61. First oil passage; 62. Second oil passage; 63. Spray hole Detailed implementation mode

[0032] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. In addition, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.

[0033] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

[0034] Please refer to Figures 1 to 7 , the embodiment of the present invention provides a clamping tooling for the flow rate and distribution test of a spray bar, including:

[0035] Base plate 1;

[0036] Adapter assembly 2, fixedly arranged at one end of the top surface of the base plate 1, and used for hermetically connecting one end of the oil passage to be detected with the test equipment;

[0037] Plugging assembly 3, fixedly arranged at the other end of the top surface of the base plate 1, and used for plugging the other end of the oil passage to be detected;

[0038] First oil collecting assembly 4, arranged on the base plate 1 and distributed on both sides of the spray bar 6, and used for separately collecting the detection media sprayed out from the spray holes 63 with dense distribution on both sides of the spray bar 6, and there is a gap between the first oil collecting assembly 4 and the corresponding spray hole 63;

[0039] Second oil collecting assembly 5, arranged on the base plate 1 and distributed on both sides of the spray bar 6, and used for separately collecting the detection media sprayed out from the spray holes 63 with non-dense distribution on both sides of the spray bar 6, and there is a gap between the second oil collecting assembly 5 and the corresponding spray hole 63.

[0040] In this embodiment, the spray holes 63 with dense distribution refer to the spray holes with relatively small spacing and inconvenient to separately collect the sprayed test media through pipelines; the spray holes 63 with non-dense distribution refer to the spray holes 63 with relatively large spacing and convenient to separately collect the sprayed test media through pipelines.

[0041] The first oil circuit 61 of the spray bar 6 is provided with a part of densely distributed spray holes 63. When the first oil circuit 61 is used as the oil circuit to be tested and the flow rate and distribution test is performed on it, firstly, one end of the first oil circuit 61 is connected to the adapter component 2, and then the other end of the first oil circuit 61 is blocked by the blocking component 3; at this time, the adapter component 2 and the blocking component 3 clamp and fix the spray bar 6, so that the spray holes 63 of the first oil circuit 61 are respectively aligned with the first oil collecting component 4 and the second oil collecting component 5;

[0042] Then, the adapter assembly 2 is connected to the test equipment through a hose. At this time, the test equipment is turned on, and the test equipment injects the high-pressure test medium into the first oil circuit 61 and ejects it through each spray hole 63. The first oil collection assembly 4 separately collects the test medium sprayed from the densely distributed spray holes 63 on both sides of the spray rod 6; the second oil collection assembly 5 separately collects the test medium sprayed from the sparsely distributed spray holes 63 on both sides of the spray rod 6; and then the test medium sprayed from each spray hole 63 is metered.

[0043] The clamping tooling of the present application is easy to operate and has high test efficiency, and realizes the separate collection of the test medium sprayed from the densely distributed spray holes 63. A gap is left between the first oil collection assembly 4 and the second oil collection assembly 5 and the corresponding spray holes 63, avoiding the oil return problem at the spray holes 63 and ensuring the accuracy of the test detection.

[0044] In a preferred embodiment, if Figure 3 and Figure 7 As shown, the adapter assembly 2 includes an adapter seat 21 fixedly arranged on one end of the top surface of the base plate 1, a docking groove 22 is provided on the top of the adapter seat 21 close to the sealing assembly 3, and an adapter 23 is fixedly connected to the other side. The adapter 23 is connected to the docking groove 22 through a first through hole 24, and a sealing ring 25 is embedded in the docking groove 22 on the outer periphery of the first through hole 24. The docking joint 23 is connected to the output end of the test equipment through a hose.

[0045] In this embodiment, one end of the spray rod 6 is embedded in the docking groove 22, and one end of the first oil circuit 61 is sealed and docked with the first through hole 24, thereby realizing the connection between the first oil circuit 61 and the test equipment and ensuring that the detection medium can smoothly enter the first oil circuit 61.

[0046] In a preferred embodiment, if Figure 3 and Figure 7 As shown, the blocking assembly 3 includes a blocking seat 31 fixedly arranged at the other end of the top surface of the base plate 1, and a screw hole 32 is opened on the blocking seat 31 in the horizontal direction. A screw rod 33 is threadedly passed through the screw hole 32, and one end of the screw rod 33 close to the adapter assembly 2 is rotatably connected to a plug 34 adapted to the end of the spray rod 6, and a wrench clamp 34 is arranged on the other end, and the plug 34 is made of polytetrafluoroethylene material.

[0047] In this embodiment, the wrench is clamped on the wrench chuck 34 and the screw rod 33 is rotated. After the plug 34 is docked with the end of the spray rod 6, the screw rod 33 is tightened to seal the end of the spray rod 6. The plug 34 is made of polytetrafluoroethylene material, and has a good sealing effect. Preferably, two sealing pins are arranged at one end of the plug 34 close to the spray rod 6 and are respectively inserted into the first oil passage 61 and the second oil passage 62, so as to improve the plugging effect.

[0048] In a preferred embodiment, as Figures 3 to 5 shown, the first oil collecting assembly 4 includes oil collecting tanks 41 fixedly arranged on the top surface of the bottom plate 1 and distributed on both sides of the spray rod 6. One side of the oil collecting tank 41 close to the surface of the spray rod 6 is provided with oil inlet holes 42 corresponding one by one to the densely distributed spray holes 63. The gap between the oil inlet hole 42 and the corresponding spray hole 63 is 0.1-1 mm. The radius of the oil inlet hole 42 is larger than the radius of the corresponding spray hole 63 and smaller than half of the center distance between the corresponding spray hole 63 and the adjacent spray hole 63. The bottom of the oil collecting tank 41 is fixedly connected with an oil outlet pipe 43 corresponding to the oil inlet hole 42 one by one. Each oil inlet hole 42 is respectively communicated to the corresponding oil outlet pipe 43 through independent oil channels 44.

[0049] In this embodiment, after the test medium is ejected from the spray hole 63, it respectively enters the corresponding oil inlet hole 42, and then flows out through the oil channel 44 and the oil outlet pipe 43. The flowing out test medium is introduced into the test equipment through a hose for metering. The oil inlet hole 42 is coaxial with the corresponding spray hole 63, and the aperture is designed to be as large as possible and as close to the spray hole 63 as possible to ensure effective collection of the test medium ejected from the spray hole 63. By arranging the oil inlet hole 42 on the oil collecting tank 41 and then guiding through the oil channel 44, the problem that pipelines cannot be arranged to collect the test medium for the densely distributed spray holes 63 is effectively solved.

[0050] The oil channel 44 is designed as an L shape, and the transition at the connection is arc-shaped to control the reflection angle of the test medium. The depth of the oil channel 44 is as deep as possible, and the diameter of the bottom oil outlet pipe 43 is as large as possible without interference, so as to avoid the problem that the test medium overflows from the oil inlet hole 42 due to too slow flow rate of the test medium inside the oil collecting tank 41.

[0051] Preferably, the oil collecting tank 41 is fixed on the bottom plate 1 by screws. The matching oil collecting tank 41 can be replaced according to the spray rod 6 with different structural features to meet its test requirements, and the applicability is good.

[0052] In a preferred embodiment, as Figure 3 and Figure 6As shown in the figure, the second oil collecting assembly 5 includes a number of oil collecting pipes 51 arranged on both sides of the spray bar 6 corresponding one by one to the spray holes 63 with low distribution density. Second through holes 11 corresponding one by one to the oil collecting pipes 51 are formed in the bottom plate 1. The bottom ends of the oil collecting pipes 51 slide through the corresponding second through holes 11, and the top ends are bent and extend towards the corresponding spray holes 63. The top ends of the oil collecting pipes 51 are coaxial with the corresponding spray holes 63, and the gap is 0.2 - 1.5 mm. Locking screws 52 extending into the second through holes 11 one by one are arranged on the outer side of the bottom plate 1.

[0053] In this embodiment, loosening the locking screw 52 can adjust the position of the oil collecting pipe 51 to ensure that the top end of the oil collecting pipe 51 can accurately collect the test medium ejected from the spray hole 63. The test medium flowing out from the bottom end of the oil collecting pipe 51 is introduced into the test equipment through a hose for measurement.

[0054] It is designed that the pipe orifice diameter of the oil collecting pipe 51 is much larger than the spray orifice diameter. Under the pressurized condition, it is ensured that the flow rate of the test medium ejected from the spray hole 63 is less than the flow rate of the oil collecting pipe 51, avoiding the problem of reverse oil phenomenon due to the too slow flow rate of the test medium in the oil collecting pipe 51.

[0055] When the test medium is ejected from the spray hole 63, it is guided by the arc section of the oil collecting pipe 51 and then flows into the test equipment through a hose; by adjusting the height of the oil collecting pipe 51, the reflection angle of the test medium flow beam is controlled to ensure that there is no problem of test medium overflow at the oil receiving port of the oil collecting pipe 51 during the test process.

[0056] In the description of this specification, terms such as "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0057] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0058] The above is only the preferred embodiment of this application and is not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A clamping fixture for flow and distribution testing of a spray boom, characterized in that: include: Bottom plate (1); An adapter component (2) is fixedly arranged on one end of the top surface of the bottom plate (1) and is used to seal and connect one end of the oil circuit to be tested with the test equipment; A plugging component (3) is fixedly arranged on the other end of the top surface of the bottom plate (1) and is used to plug the other end of the oil circuit to be tested; A first oil collecting assembly (4) is arranged on the bottom plate (1) and distributed on both sides of the spray bar (6), and is used to separately collect the detection medium sprayed from the densely distributed spray holes (63) on both sides of the spray bar (6), and a gap is left between the first oil collecting assembly (4) and the corresponding spray hole (63); The second oil collecting assembly (5) is arranged on the bottom plate (1) and distributed on both sides of the spray bar (6), and is used to separately collect the detection medium sprayed from the spray holes (63) that are not densely distributed on both sides of the spray bar (6), and a gap is left between the second oil collecting assembly (5) and the corresponding spray hole (63).

2. The clamping fixture for flow and distribution test of spray bar according to claim 1, characterized in that: The adapter assembly (2) comprises an adapter seat (21) fixedly arranged on one end of the top surface of the base plate (1); a docking groove (22) is provided on the top of the adapter seat (21) close to the blocking assembly (3); an adapter (23) is fixedly connected to the other side; the adapter (23) is connected to the docking groove (22) through a first through hole (24); a sealing ring (25) is embedded in the docking groove (22) on the outer periphery of the first through hole (24); and the docking joint (23) is connected to the output end of the test equipment through a hose.

3. The clamping fixture for flow and distribution test of spray bar according to claim 1, characterized in that: The blocking assembly (3) comprises a blocking seat (31) fixedly arranged at the other end of the top surface of the bottom plate (1), a screw hole (32) being opened in the horizontal direction on the blocking seat (31), a screw rod (33) being threadedly connected and passing through the screw hole (32), one end of the screw rod (33) close to the adapter assembly (2) being rotatably connected to a plug (34) adapted to the end of the spray rod (6), and a wrench clamp (35) being arranged at the other end, and the plug rod (34) being made of polytetrafluoroethylene material.

4. The clamping fixture for flow and distribution test of a spray bar according to claim 1, characterized in that: The first oil collecting assembly (4) comprises an oil collecting box (41) fixedly arranged on the top surface of the bottom plate (1) and respectively distributed on both sides of the spray rod (6); one side of the oil collecting box (41) is close to the surface of the spray rod (6) and is provided with oil inlet holes (42) corresponding to the densely distributed spray holes (63); the gap between the oil inlet holes (42) and the corresponding spray holes (63) is 0.1-1mm; the radius of the oil inlet hole (42) is larger than the radius of the corresponding spray hole (63) and smaller than half of the center distance between the corresponding spray hole (63) and the adjacent spray hole (63); the bottom of the oil collecting box (41) is fixedly connected with oil outlet pipes (43) corresponding to the oil inlet holes (42); each of the oil inlet holes (42) is connected to the corresponding oil outlet pipe (43) through independent oil passages (44).

5. The clamping fixture for flow and distribution test of spray bar according to claim 1, characterized in that: The second oil collecting assembly (5) comprises a plurality of oil collecting pipes (51) arranged on both sides of the spray bar (6) in one-to-one correspondence with the sparsely distributed spray holes (63); the bottom plate (1) is provided with second through holes (11) in one-to-one correspondence with the oil collecting pipes (51); the bottom end of the oil collecting pipe (51) slides through the corresponding second through hole (11); the top end is bent and extends toward the corresponding spray hole (63); the top end of the oil collecting pipe (51) is coaxial with the corresponding spray hole (63) and the gap is 0.2-1.5 mm; the outer side of the bottom plate (1) is provided with top screws (52) in one-to-one correspondence extending into the second through holes (11).

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