Test bench for testing performance of outward-extending flexible sealing element and inward-extending flexible sealing element

Abstract

The invention relates to a test bench for testing the performance of an outward-extending flexible sealing element and an inward-extending flexible sealing element, and belongs to the technical field of aero-engine sealing. The device comprises a motor, a coupler, a sealing test device, a support I, a support II, a support III, a base and a main shaft. The support I, the support II and the support III are installed on the base, the motor is installed on the support I, the sealing test device is installed on the support II and the support III, a bearing device is arranged in the sealing test device, one end of the main shaft is arranged in the sealing test device through the bearing device, one end of the coupler is connected with an output shaft of the motor, and the other end of the coupler is connected with the other end of the main shaft. According to the invention, the leakage performance and the wear performance of the outward-extending sealing element and the inward-extending sealing element with the same size and shape can be compared and tested, and the test efficiency is high; by changing the sizes of the test turntable and the wear-resistant stator, the size range of the sealing test piece capable of being measured is widened, the test application range is wide, and popularization and application are easy; modularized design is achieved, and operation is easy.

Description

Technical Field

[0001] The present invention relates to a test bench for testing the performance of outward-extending and inward-extending flexible seals, in particular to a test bench for testing the sealing performance of internal seals of aircraft engines, belonging to the technical field of aircraft engine sealing. Background Art

[0002] High-performance sealing devices are required at more than a dozen locations within an aircraft engine. Currently, the most widely used sealing devices include graphite seals and grate seals. Brush seals and fingertip seals are a new class of flexible sealing technologies that have emerged and have been successfully applied to gas turbines in the international aviation industry, but are still in the experimental testing phase in China. Research has found that current research on the performance of flexible seals largely relies on numerical simulations, without a mature device for measuring sealing performance. This leads to discrepancies between simulation results and actual experimental results, a bottleneck hindering the development of sealing technology. Where experimental verification is possible, these devices can only test the sealing performance of the same flexible seal at a time, preventing comparisons between different structures under the same conditions. Furthermore, the main shaft is susceptible to wear during testing, resulting in high testing costs and low testing efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a test bench for testing the performance of outward-extending and inward-extending flexible seals, so as to solve the problems of high cost and low efficiency of existing tests for testing the performance of flexible seals.

[0004] The present invention is implemented according to the following technical solution: a test bench for testing the performance of an outward-extending and inward-extending flexible seal, comprising a motor 1, a coupling 2, a sealing test device 3, a bracket I5, a bracket II6, a bracket III7, a base 8, and a main shaft 9; bracket I5, bracket II6, and bracket III7 are mounted on the base 8, the motor 1 is mounted on the bracket I5, the sealing test device 4 is mounted on the bracket II6 and the bracket III7, a bearing device 4 is provided in the sealing test device 3, one end of the main shaft 9 is placed in the sealing test device 3 through the bearing device 4, one end of the coupling 2 is connected to the output shaft of the motor 1, and the other end is connected to the main shaft 9 The other end is connected, the sealing test device 3 includes a bearing device 4, a sealing test box 25, a clamping piece I 29, an outward-extending seal 30, a wear-resistant stator 31, an adapter 34, a clamping piece II 35, an inward-extending seal 36, a test turntable 37, and a sealing end cover 33; the sealing test box 25 includes a left bearing cavity 59 and a right test sealing cavity 60, the bearing device 4 is located in the left bearing cavity 59, the clamping piece I 29, the outward-extending seal 30, the wear-resistant stator 31, the adapter 34, the clamping piece II 35, the inward-extending seal 36, the test turntable 37, and the sealing cavity end cover 33 are all located on the right In the test sealing cavity 60, the sealing test box 25 is respectively provided with a stepped hole I 40, a stepped hole II 41, a stepped hole III 42, a stepped hole IV 43, a stepped hole V 44, and a stepped hole VI 45 from left to right. The main shaft 9 is respectively provided with a shaft section I 46, a shaft section II 47, a shaft section III 48, a shaft section IV 49, a shaft section V 50, and a shaft section VI 51 from left to right. A positioning hole I 52 is provided on the shaft section II 47, and a positioning hole III 54 is provided on the shaft section VI 51. The stepped hole I 40 corresponds to the position of the shaft section II 47, the stepped hole II 41 corresponds to the position of the shaft section III 48, and the stepped hole III 42 corresponds to the position of the shaft section V 50. The stepped hole IV43 and the stepped hole V44 correspond to the positions of the shaft section VI51. An air inlet 32 ​​is provided on the right side of the sealing test box 25, and an air outlet I38 is provided on the side of the sealing test box 25. An oil inlet hole I26, an oil inlet hole II27, and an oil outlet hole 28 are provided on the sealing test box 25 corresponding to the shaft section IV49. The bearing device 4 includes a sleeve I10, a bearing end cover I11, a washer I13, an angular contact ball bearing I14, an angular contact ball bearing II17, a deep groove ball bearing 18, a washer II19, an oil seal ring II20, a washer III21, an oil seal ring III22, a sleeve II23, and a bearing end cover II24.Angular contact ball bearings Ⅰ14 and angular contact ball bearings Ⅱ17 are placed in stepped holes Ⅱ41, and shaft segments Ⅲ48 cooperate with angular contact ball bearings Ⅰ14 and angular contact ball bearings Ⅱ17. Distance rings Ⅰ15 and Ⅱ16 are installed between angular contact ball bearings Ⅰ14 and angular contact ball bearings Ⅱ17. Shaft sleeve Ⅰ10 is fixed on shaft segment Ⅱ47 by screws. Shaft sleeve Ⅰ10 is used for axial positioning of the inner ring of angular contact ball bearing Ⅰ14. Washer Ⅰ13 is installed in stepped holes Ⅰ40. Washer Ⅰ13 is used for axial positioning of the outer ring of angular contact ball bearing Ⅰ14. The side of washer Ⅰ13 is fixed to the shaft segment Ⅱ47. An oil seal ring I12 is installed between the shaft sleeves I10. The oil seal ring I12 is used to prevent the bearing lubricating oil from leaking and prevent external impurities from entering the bearing. The bearing end cover I11 is fixed to the left end of the sealing test box 25 by screws. The bearing end cover I11 is in contact with the oil seal ring I12 and is used to axially position the oil seal ring I12 and the gasket I13. The deep groove ball bearing 18 is placed in the stepped hole III42, the shaft section V50 is matched with the deep groove ball bearing 18, the gasket II19 is installed in the stepped hole IV43, the oil seal ring II20 is installed on the side of the gasket II19, and the shaft sleeve II2 3 is installed on the shaft section VI 51 and is located in the stepped hole IV 43. The end of the sleeve II 23 is used to axially locate the inner ring of the deep groove ball bearing 18. The washer III 21 is installed in the stepped hole IV 43. The oil seal ring III 22 is installed on the side of the washer III 21. The washer II 19 is used to axially locate the outer ring of the deep groove ball bearing 18. The bearing end cover II 24 is fixed to the inside of the sealing test box 25 by screws and is located on the side of the stepped hole IV 43. The bearing end cover II 24 is used to axially locate the oil seal ring III 22. The clamping piece I 29 is clamped to the extended seal 30 on the left side of the experimental turntable 37 by screws. The test turntable 37 is screwed onto shaft segment VI51 of the main shaft 9. The wear-resistant stator 31 is also screwed into stepped hole V44. The outer ring of the extended seal 30 contacts the inner ring of the wear-resistant stator 31. The outer ring of the adapter 34 is screwed into stepped hole VI45. The clamping piece II35 clamps the extended seal 36 onto the inner ring of the adapter 34 with screws. The inner ring of the extended seal 36 contacts the outer ring of the test turntable 37. The sealing end cap 33 is screwed onto the right end of the sealed test chamber 25. An air outlet II39 is formed at the end of the sealing end cap 33.

[0005] A positioning boss 56 is provided on the left side of the outer ring of the experimental turntable 37 for positioning the protruding seal 30. A positioning hole IV55 is provided on the right side of the inner ring of the experimental turntable 37. The positioning hole IV55 corresponds to the position of the positioning hole III54 on the right side of the shaft section VI51. The inner ring of the experimental turntable 37 is fixedly installed on the right side of the shaft section VI51 by screws to axially position the shaft sleeve II23. The protruding seal 30 and the inner protruding seal 36 both include a front baffle 61, a sealing sheet 62, and a rear baffle 63.

[0006] A positioning hole II53 is opened in the sleeve I10, and the positioning hole II53 corresponds to the position of the positioning hole I52 on the shaft section II47. The sleeve I10 is provided with a boss I57 for preventing large particles of impurities from entering the interior of the bearing device 4. The sleeve II23 is provided with a boss II58 for improving the sealing performance of the bearing device 4.

[0007] The working principle of a test bench for testing the performance of an outward-extending and inward-extending flexible seal is as follows: high-temperature and high-pressure gas is injected through the air inlet 32, and the sealing performance of the outward-extending seal 30 and the inward-extending seal 36 can be compared under the high-speed rotation of the main shaft 9; the outward-extending seal 30 and the inward-extending seal 36 are replaced with other outward-extending seals 30 and inward-extending seals 36 of the same outer dimensions, and the clamping piece I 29, the wear-resistant stator 31, the adapter 34, the clamping piece II 35, and the experimental turntable 37 that match the outer dimensions of the seals are replaced, and high-temperature and high-pressure gas is injected through the air inlet 32, and the outward-extending seals of the same outer dimensions can be tested. A sealing performance comparison experiment is carried out on the extending seal 30 and the inward extending seal 36. For example, if the sealing performance of the extending seal 30 with an outer diameter of 300 mm and an inner diameter of 200 mm is compared with that of the inward extending seal 36, it is only necessary to replace the clamping piece I 29, the wear-resistant stator 31, the adapter 34, the clamping piece II 35, and the experimental turntable 37 that are matched with the seal with an outer diameter of 300 mm and an inner diameter of 200 mm, install the extending seal 30 with an outer diameter of 300 mm and an inner diameter of 200 mm and the inward extending seal 36, and inject high-temperature and high-pressure gas through the air inlet 32 ​​to compare the sealing performance of the extending seal 30 and the inward extending seal 36.

[0008] The present invention has the following beneficial effects: 1. The present invention can conduct comparative tests on the leakage and wear performance of outward-extending seals and inward-extending seals of the same size and shape, which can be used to guide the selection of fingertip seals in aircraft engines, and has high test efficiency. 2. The present invention can expand the size range of sealing test pieces that can be measured by changing the size of the test turntable and the wear-resistant stator, thus widening the test application range and being easy to promote and apply; 3. The modular design of the present invention has a simple test bench structure, simple operation, reliable operation, and is convenient for testing the sealing performance of test pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a structural diagram of the sealing test box of the present invention; Figure 3 This is a schematic diagram of the main shaft structure of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the main shaft and the sealing test box of the present invention; Figure 5 This is a schematic diagram of the internal assembly structure of the left bearing cavity of the present invention; Figure 6 This is a schematic diagram of the internal assembly structure of the right test sealing cavity of the present invention; Figure 7 This is a schematic diagram of the internal assembly structure of the sealed test box of the present invention; Figure 8 This is a schematic diagram of the experimental turntable structure of the present invention; Figure 9 This is a schematic structural diagram of the shaft sleeve I of the present invention; Figure 10 This is a structural diagram of the shaft sleeve II of the present invention; Figure 11 Schematic diagram of the sealing structure of the present invention.

[0010] The numbers in the figure are: 1: motor, 2: coupling, 3: sealing test device, 4: bearing device, 5: bracket I, 6: bracket II, 7: bracket III, 8: base, 9: main shaft, 10: sleeve I, 11: bearing end cover I, 12: oil seal ring I, 13: gasket I, 14: angular contact ball bearing I, 15: distance ring I, 16: distance ring II, 17: angular contact ball bearing II, 18: deep groove ball bearing, 19: gasket II, 20: oil seal ring II, 21: gasket III, 22: oil seal ring III, 23: sleeve II, 24: bearing end cover II, 25: sealing test box, 26: oil inlet hole I, 27: oil inlet hole II, 28: oil outlet hole, 29: clamping piece I, 30: extended seal, 31: wear-resistant stator, 32 : Air inlet, 33: Sealing end cap, 34: Adapter, 35: Clamping piece II, 36: Inner seal, 37: Experimental turntable, 38: Air outlet I, 39: Air outlet II, 40: Step hole I, 41: Step hole II, 42: Step hole III, 43: Step hole IV, 44: Step hole V, 45: Step hole VI, 46: Shaft section I, 47: Shaft section II, 48: Shaft section III, 49: Shaft section IV, 50: Shaft section V, 51: Shaft section VI, 52: Positioning hole I, 53: Positioning hole II, 54: Positioning hole III, 55: Positioning hole IV, 56: Positioning boss, 57: Boss I, 58: Boss II, 59: Left bearing cavity, 60: Right test sealing cavity, 61: Front baffle, 62: Sealing plate, 63: Rear baffle. DETAILED DESCRIPTION

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the scope of the drawings.

[0012] Example 1: Figure 1-11As shown, when only the performance of the inward-extending flexible seal needs to be measured, a test bench for testing the performance of the outward-extending and inward-extending flexible seals includes a motor 1, a coupling 2, a sealing test device 3, a bracket I5, a bracket II6, a bracket III7, a base 8, and a main shaft 9; bracket I5, bracket II6, and bracket III7 are installed on the base 8, the motor 1 is installed on the bracket I5, the sealing test device 4 is installed on the bracket II6 and the bracket III7, a bearing device 4 is provided in the sealing test device 3, one end of the main shaft 9 is placed in the sealing test device 3 through the bearing device 4, one end of the coupling 2 is connected to the output shaft of the motor 1, and the other end is connected to the main shaft 9. One end is connected to the other end of the main shaft 9. The sealing test device 3 includes a bearing device 4, a sealing test box 25, a clamping piece I 29, an outward-extending seal 30, a wear-resistant stator 31, an adapter 34, a clamping piece II 35, an inward-extending seal 36, a test turntable 37, and a sealing end cover 33; the sealing test box 25 includes a left bearing cavity 59 and a right test sealing cavity 60. The bearing device 4 is located in the left bearing cavity 59. The clamping piece I 29, the outward-extending seal 30, the wear-resistant stator 31, the adapter 34, the clamping piece II 35, the inward-extending seal 36, the test turntable 37, and the sealing cavity end cover 33 are Located in the right test sealing cavity 60, the sealing test box 25 is respectively provided with stepped holes I40, II41, III42, IV43, V44 and VI45 from left to right, and the main shaft 9 is respectively provided with shaft sections I46, II47, III48, IV49, V50 and VI51 from left to right. Positioning hole I52 is provided on shaft section II47, and positioning hole III54 is provided on shaft section VI51. Step hole I40 corresponds to shaft section II47, step hole II41 corresponds to shaft section III48, and step hole III42 corresponds to shaft section V50. The stepped hole IV43 and the stepped hole V44 correspond to the positions of the shaft section VI51. The right part of the sealing test box 25 is provided with an air inlet 32, and the side part of the sealing test box 25 is provided with an air outlet I38. The sealing test box 25 corresponding to the shaft section IV49 is provided with an oil inlet hole I26, an oil inlet hole II27 and an oil outlet hole 28. The bearing device 4 includes a sleeve I10, a bearing end cover I11, a washer I13, an angular contact ball bearing I14, an angular contact ball bearing II17, a deep groove ball bearing 18, a washer II19, an oil seal ring II20, a washer III21, an oil seal ring III22, a sleeve II23, and a bearing end cover II24.Angular contact ball bearings Ⅰ14 and Ⅱ17 are placed in stepped hole Ⅱ41, and shaft section Ⅲ48 cooperates with angular contact ball bearings Ⅰ14 and Ⅱ17. Distance rings Ⅰ15 and Ⅱ16 are installed between angular contact ball bearings Ⅰ14 and Ⅱ17. Shaft sleeve Ⅰ10 is fixed on shaft section Ⅱ47 by screws. Shaft sleeve Ⅰ10 is used to axially locate the inner ring of angular contact ball bearing Ⅰ14. Washer Ⅰ13 is installed in stepped hole Ⅰ40. Washer Ⅰ13 is used to The outer ring of the angular contact ball bearing Ⅰ14 is axially positioned. An oil seal ring Ⅰ12 is installed between the side of the washer Ⅰ13 and the sleeve Ⅰ10. The oil seal ring Ⅰ12 is used to prevent the bearing lubricating oil from leaking and prevent external impurities from entering the bearing. The bearing end cover Ⅰ11 is fixed to the left end of the sealing test box 25 by screws. The inside of the bearing end cover Ⅰ11 is in contact with the oil seal ring Ⅰ12 and is used to axially position the oil seal ring Ⅰ12 and the washer Ⅰ13. The deep groove ball bearing 18 is placed in the stepped hole Ⅲ42. The shaft section Ⅴ50 is fixed to the left end of the sealing test box 25. Deep groove ball bearing 18 is matched, washer II 19 is installed in stepped hole IV 43, oil seal ring II 20 is installed on the side of washer II 19, sleeve II 23 is installed on shaft section VI 51 and is located in stepped hole IV 43, the end of sleeve II 23 is used to axially locate the inner ring of deep groove ball bearing 18, washer III 21 is installed in stepped hole IV 43, oil seal ring III 22 is installed on the side of washer III 21, washer II 19 is used to axially locate the outer ring of deep groove ball bearing 18, bearing end cover II 24 is fixed to the seal by screws Inside the sealing test chamber 25, located to the side of the stepped hole IV 43, the bearing end cap II 24 is used to axially position the oil seal ring III 22. Clamping piece I 29 is screwed to the extended seal 30 on the left side of the test turntable 37. The test turntable 37 is also screwed to the shaft section VI 51 of the main shaft 9. The wear-resistant stator 31 is also screwed into the stepped hole V 44. The outer ring of the extended seal 30 contacts the inner ring of the wear-resistant stator 31. The sealing end cap 33 is screwed to the right end of the sealing test chamber 25.

[0013] Example 2: Figure 1-11As shown, when only the performance of the outward-extending flexible seal needs to be measured, a test bench for testing the performance of the outward-extending and inward-extending flexible seals includes a motor 1, a coupling 2, a sealing test device 3, a bracket I5, a bracket II6, a bracket III7, a base 8, and a main shaft 9; the bracket I5, the bracket II6, and the bracket III7 are installed on the base 8, the motor 1 is installed on the bracket I5, the sealing test device 4 is installed on the bracket II6 and the bracket III7, a bearing device 4 is provided in the sealing test device 3, one end of the main shaft 9 is placed in the sealing test device 3 through the bearing device 4, and one end of the coupling 2 is connected to the output shaft of the motor 1. The other end is connected to the other end of the main shaft 9. The sealing test device 3 includes a bearing device 4, a sealing test box 25, a clamping piece I 29, an outward-extending seal 30, a wear-resistant stator 31, an adapter 34, a clamping piece II 35, an inward-extending seal 36, a test turntable 37, and a sealing end cover 33; the sealing test box 25 includes a left bearing cavity 59 and a right test sealing cavity 60. The bearing device 4 is located in the left bearing cavity 59, the clamping piece I 29, the outward-extending seal 30, the wear-resistant stator 31, the adapter 34, the clamping piece II 35, the inward-extending seal 36, the test turntable 37, and the sealing end cover 33. , the sealing cavity end cover 33 is located in the right test sealing cavity 60, the sealing test box 25 is provided with stepped hole I 40, stepped hole II 41, stepped hole III 42, stepped hole IV 43, stepped hole V 44, stepped hole VI 45 from left to right, the main shaft 9 is provided with shaft section I 46, shaft section II 47, shaft section III 48, shaft section IV 49, shaft section V 50, shaft section VI 51 from left to right, the shaft section II 47 is provided with a positioning hole I 52, the shaft section VI 51 is provided with a positioning hole III 54, the stepped hole I 40 corresponds to the position of the shaft section II 47, the stepped hole II 41 corresponds to the position of the shaft section III 48, and the stepped hole I 40 corresponds to the position of the shaft section II 47. The stepped hole III 42 corresponds to the position of the shaft section V 50 , the stepped hole IV 43 and the stepped hole V 44 correspond to the position of the shaft section VI 51 , an air inlet 32 ​​is opened on the right side of the sealing test box 25 , and an oil inlet hole I 26 , an oil inlet hole II 27 and an oil outlet hole 28 are opened on the sealing test box 25 corresponding to the shaft section IV 49 . The bearing device 4 includes a sleeve I 10 , a bearing end cover I 11 , a washer I 13 , an angular contact ball bearing I 14 , an angular contact ball bearing II 17 , a deep groove ball bearing 18 , a washer II 19 , an oil seal ring II 20 , a washer III 21 , an oil seal ring III 22 , a sleeve II 23 , and a bearing end cover II 24 ;Angular contact ball bearings Ⅰ14 and Ⅱ17 are placed in stepped hole Ⅱ41. Shaft segment Ⅲ48 cooperates with angular contact ball bearings Ⅰ14 and Ⅱ17. Distance rings Ⅰ15 and Ⅱ16 are installed between angular contact ball bearings Ⅰ14 and Ⅱ17. Shaft sleeve Ⅰ10 is fixedly installed on shaft segment Ⅱ47 by screws. Shaft sleeve Ⅰ10 is used to axially locate the inner ring of angular contact ball bearing Ⅰ14. Washer Ⅰ13 is installed in stepped hole Ⅰ40. Washer Ⅰ13 is used to axially locate the angular contact ball bearing An oil seal ring I12 is installed between the outer ring I14 and the side of the washer I13 and the sleeve I10. The oil seal ring I12 is used to prevent the bearing lubricating oil from leaking and prevent external impurities from entering the bearing. The bearing end cover I11 is fixed to the left end of the sealing test box 25 by screws. The bearing end cover I11 is in contact with the oil seal ring I12 and is used to axially position the oil seal ring I12 and the washer I13. The deep groove ball bearing 18 is placed in the stepped hole III42, the shaft section V50 is matched with the deep groove ball bearing 18, and the washer II19 is installed in the stepped hole Hole IV43, oil seal ring II20 is installed on the side of gasket II19, sleeve II23 is installed on shaft section VI51 and located in stepped hole IV43, the end of sleeve II23 is used to axially locate the inner ring of deep groove ball bearing 18, gasket III21 is installed in stepped hole IV43, oil seal ring III22 is installed on the side of gasket III21, gasket II19 is used to axially locate the outer ring of deep groove ball bearing 18, bearing end cover II24 is fixed to the inside of sealing test box 25 by screws and is located on the side of stepped hole IV43, bearing end cover II24 is used to axially locate the inner ring of deep groove ball bearing 18 The oil seal ring III 22 is positioned. The test turntable 37 is screwed to the shaft section VI 51 of the main shaft 9. The outer ring of the adapter 34 is screwed into the stepped hole VI 45. The clamping piece II 35 is screwed to the inner ring of the adapter 34. The inner ring of the inner ring of the extended seal 36 contacts the outer ring of the test turntable 37. The sealing end cover 33 is screwed to the right end of the sealing test box 25. The end of the sealing end cover 33 is provided with an air outlet II 39. The sealing end cover 33 is screwed to the right end of the sealing test box 25.

[0014] Example 3: Figure 1-11As shown, when the performance of the outward-extending flexible seal and the inward-extending flexible seal is compared at the same time, a test bench for testing the performance of the outward-extending and inward-extending flexible seals includes a motor 1, a coupling 2, a sealing test device 3, a bracket I5, a bracket II6, a bracket III7, a base 8, and a main shaft 9; the bracket I5, the bracket II6, and the bracket III7 are installed on the base 8, the motor 1 is installed on the bracket I5, the sealing test device 4 is installed on the bracket II6 and the bracket III7, a bearing device 4 is provided in the sealing test device 3, one end of the main shaft 9 is placed in the sealing test device 3 through the bearing device 4, and one end of the coupling 2 is connected to the output of the motor 1. The output shaft is connected, and the other end is connected to the other end of the main shaft 9. The sealing test device 3 includes a bearing device 4, a sealing test box 25, a clamping piece I 29, an outward-extending seal 30, a wear-resistant stator 31, an adapter 34, a clamping piece II 35, an inward-extending seal 36, a test turntable 37, and a sealing end cover 33; the sealing test box 25 includes a left bearing cavity 59 and a right test sealing cavity 60. The bearing device 4 is located in the left bearing cavity 59, the clamping piece I 29, the outward-extending seal 30, the wear-resistant stator 31, the adapter 34, the clamping piece II 35, the inward-extending seal 36, the test turntable 37, and the sealing end cover 33. The cover 33 is located in the right test sealing cavity 60, and the sealing test box 25 is respectively provided with a stepped hole I 40, a stepped hole II 41, a stepped hole III 42, a stepped hole IV 43, a stepped hole V 44, and a stepped hole VI 45 from left to right. The main shaft 9 is respectively provided with a shaft section I 46, a shaft section II 47, a shaft section III 48, a shaft section IV 49, a shaft section V 50, and a shaft section VI 51 from left to right. A positioning hole I 52 is provided on the shaft section II 47, and a positioning hole III 54 is provided on the shaft section VI 51. The stepped hole I 40 corresponds to the position of the shaft section II 47, the stepped hole II 41 corresponds to the position of the shaft section III 48, and the stepped hole III 42 corresponds to the position of the shaft section V 50. The stepped hole IV43 and the stepped hole V44 correspond to the positions of the shaft section VI51. The right part of the sealing test box 25 is provided with an air inlet 32, and the side part of the sealing test box 25 is provided with an air outlet I38. The sealing test box 25 corresponding to the shaft section IV49 is provided with an oil inlet hole I26, an oil inlet hole II27 and an oil outlet hole 28. The bearing device 4 includes a sleeve I10, a bearing end cover I11, a washer I13, an angular contact ball bearing I14, an angular contact ball bearing II17, a deep groove ball bearing 18, a washer II19, an oil seal ring II20, a washer III21, an oil seal ring III22, a sleeve II23, and a bearing end cover II24.Angular contact ball bearings Ⅰ14 and angular contact ball bearings Ⅱ17 are placed in stepped holes Ⅱ41, and shaft segments Ⅲ48 cooperate with angular contact ball bearings Ⅰ14 and angular contact ball bearings Ⅱ17. Distance rings Ⅰ15 and Ⅱ16 are installed between angular contact ball bearings Ⅰ14 and angular contact ball bearings Ⅱ17. Shaft sleeve Ⅰ10 is fixed on shaft segment Ⅱ47 by screws. Shaft sleeve Ⅰ10 is used for axial positioning of the inner ring of angular contact ball bearing Ⅰ14. Washer Ⅰ13 is installed in stepped holes Ⅰ40. Washer Ⅰ13 is used for axial positioning of the outer ring of angular contact ball bearing Ⅰ14. The side of washer Ⅰ13 is fixed to the shaft segment Ⅱ47. An oil seal ring I12 is installed between the shaft sleeves I10. The oil seal ring I12 is used to prevent the bearing lubricating oil from leaking and prevent external impurities from entering the bearing. The bearing end cover I11 is fixed to the left end of the sealing test box 25 by screws. The bearing end cover I11 is in contact with the oil seal ring I12 and is used to axially position the oil seal ring I12 and the gasket I13. The deep groove ball bearing 18 is placed in the stepped hole III42, the shaft section V50 is matched with the deep groove ball bearing 18, the gasket II19 is installed in the stepped hole IV43, the oil seal ring II20 is installed on the side of the gasket II19, and the shaft sleeve II2 3 is installed on the shaft section VI 51 and is located in the stepped hole IV 43. The end of the sleeve II 23 is used to axially locate the inner ring of the deep groove ball bearing 18. The washer III 21 is installed in the stepped hole IV 43. The oil seal ring III 22 is installed on the side of the washer III 21. The washer II 19 is used to axially locate the outer ring of the deep groove ball bearing 18. The bearing end cover II 24 is fixed to the inside of the sealing test box 25 by screws and is located on the side of the stepped hole IV 43. The bearing end cover II 24 is used to axially locate the oil seal ring III 22. The clamping piece I 29 is clamped to the extended seal 30 on the left side of the experimental turntable 37 by screws. The test turntable 37 is screwed onto shaft segment VI51 of the main shaft 9. The wear-resistant stator 31 is also screwed into stepped hole V44. The outer ring of the extended seal 30 contacts the inner ring of the wear-resistant stator 31. The outer ring of the adapter 34 is screwed into stepped hole VI45. The clamping piece II35 clamps the extended seal 36 onto the inner ring of the adapter 34 with screws. The inner ring of the extended seal 36 contacts the outer ring of the test turntable 37. The sealing end cap 33 is screwed onto the right end of the sealed test chamber 25. An air outlet II39 is formed at the end of the sealing end cap 33.

[0015] A positioning boss 56 is provided on the left side of the outer ring of the experimental turntable 37 for positioning the protruding seal 30. A positioning hole IV55 is provided on the right side of the inner ring of the experimental turntable 37. The positioning hole IV55 corresponds to the position of the positioning hole III54 on the right side of the shaft section VI51. The inner ring of the experimental turntable 37 is fixedly installed on the right side of the shaft section VI51 by screws to axially position the shaft sleeve II23. The protruding seal 30 and the inner protruding seal 36 both include a front baffle 61, a sealing sheet 62, and a rear baffle 63.

[0016] A positioning hole II53 is opened in the sleeve I10, and the positioning hole II53 corresponds to the position of the positioning hole I52 on the shaft section II47. The sleeve I10 is provided with a boss I57 for preventing large particles of impurities from entering the interior of the bearing device 4. The sleeve II23 is provided with a boss II58 for improving the sealing performance of the bearing device 4.

Claims

1. A test bench for testing the performance of external and internal flexible seals, characterized by: The invention comprises a motor (1), a coupling (2), a sealing test device (3), a bracket I (5), a bracket II (6), a bracket III (7), a base (8), and a main shaft (9); the bracket I (5), the bracket II (6), and the bracket III (7) are mounted on the base (8), the motor (1) is mounted on the bracket I (5), the sealing test device (3) is mounted on the bracket II (6) and the bracket III (7), a bearing device (4) is provided in the sealing test device (3), one end of the main shaft (9) is placed in the sealing test device (3) through the bearing device (4), one end of the coupling (2) is connected to the output shaft of the motor (1), and the other end is connected to the other end of the main shaft (9), the sealing test device (3) comprises the bearing device (4), the sealing The test box (25), the clamping piece I (29), the protruding seal (30), the wear-resistant stator (31), the adapter (34), the clamping piece II (35), the protruding seal (36), the experimental turntable (37), and the sealing end cover (33); the sealing test box (25) includes a left bearing cavity (59) and a right test sealing cavity (60), the bearing device (4) is located in the left bearing cavity (59), the clamping piece I (29), the protruding seal (30), the wear-resistant stator (31), the adapter (34), the clamping piece II (35), the protruding seal (36), the experimental turntable (37), and the sealing end cover (33) are all located in the right test sealing cavity (60), and the sealing test box (25 ) are provided with stepped hole I (40), stepped hole II (41), stepped hole III (42), stepped hole IV (43), stepped hole V (44), and stepped hole VI (45) from left to right. The main shaft (9) is provided with shaft section I (46), shaft section II (47), shaft section III (48), shaft section IV (49), shaft section V (50), and shaft section VI (51) from left to right. Positioning hole I (52) is provided on shaft section II (47), and positioning hole III (54) is provided on shaft section VI (51). Step hole I (40) corresponds to the position of shaft section II (47), step hole II (41) corresponds to the position of shaft section III (48), step hole III (42) corresponds to the position of shaft section V (50), step hole IV (43), step hole V (54) corresponds to the position of shaft section V (50), step hole IV (43), step hole V (54) corresponds to the position of shaft section V (50), step hole IV (43) corresponds to the position of shaft section III (48 ... The ladder hole V (44) corresponds to the position of the shaft section VI (51), the right part of the sealing test box (25) is provided with an air inlet (32), the side part of the sealing test box (25) is provided with an air outlet I (38), the sealing test box (25) corresponding to the shaft section IV (49) is provided with an oil inlet hole I (26), an oil inlet hole II (27) and an oil outlet hole (28), and the bearing device (4) includes a sleeve I (10), a bearing end cover I (11), a washer I (13), an angular contact ball bearing I (14), an angular contact ball bearing II (17), a deep groove ball bearing (18), a washer II (19), an oil seal ring II (20), a washer III (21), an oil seal ring III (22), a sleeve II (23), and a bearing end cover II (24);Angular contact ball bearings I (14) and II (17) are placed in stepped hole II (41). Shaft section III (48) cooperates with angular contact ball bearings I (14) and II (17). Distance rings I (15) and II (16) are installed between angular contact ball bearings I (14) and II (17). Shaft sleeve I (10) is fixed on shaft section II (47) by screws. Shaft sleeve I (10) is used for axial positioning of the inner ring of angular contact ball bearing I (14). Washer I (13) is installed in stepped hole I (40). Washer I (13) is used for axial positioning of the outer ring of angular contact ball bearing I (14). Washer I (13) is installed on the side of shaft section II (47). An oil seal ring I (12) is installed between the bearing end and the sleeve I (10). The oil seal ring I (12) is used to prevent the bearing lubricating oil from leaking and prevent foreign matter from entering the bearing. The bearing end cover I (11) is fixed to the left end of the sealing test box (25) by screws. The bearing end cover I (11) contacts the oil seal ring I (12) and is used to axially position the oil seal ring I (12) and the gasket I (13). The deep groove ball bearing (18) is placed in the stepped hole III (42). The shaft section V (50) is matched with the deep groove ball bearing (18). The gasket II (19) is installed in the stepped hole IV (43). The oil seal ring II (20) is installed on the side of the gasket II (19). The sleeve II ( 23) is installed on the shaft section VI (51) and is located in the stepped hole IV (43). The end of the sleeve II (23) is used to axially locate the inner ring of the deep groove ball bearing (18). The washer III (21) is installed in the stepped hole IV (43). The oil seal ring III (22) is installed on the side of the washer III (21). The washer II (19) is used to axially locate the outer ring of the deep groove ball bearing (18). The bearing end cover II (24) is fixed by screws to the inside of the sealing test box (25) and is located on the side of the stepped hole IV (43). The bearing end cover II (24) is used to axially locate the oil seal ring III (22). The clamping piece I (29) is clamped by screws to the extended seal (30) and installed on the experimental turntable (37). ) on the left, the experimental turntable (37) is mounted on the shaft section VI (51) of the main shaft (9) by screws, the wear-resistant stator (31) is mounted in the stepped hole V (44) by screws, the outer ring of the extended seal (30) contacts the inner ring of the wear-resistant stator (31), the adapter (34) is mounted in the stepped hole VI (45) by screws, the clamping piece II (35) clamps the extended seal (36) on the adapter (34) by screws, the inner ring of the extended seal (36) contacts the outer ring of the experimental turntable (37), the sealing end cover (33) is mounted on the right end of the sealing test box (25) by screws, and the end of the sealing end cover (33) is provided with an air outlet II (39). ; 2. The test bench for testing the performance of externally extending and internally extending flexible seals according to claim 1, characterized in that: The left part of the outer ring of the experimental turntable (37) is provided with a positioning boss (56) for positioning the extended seal (30). The right part of the inner ring of the experimental turntable (37) is provided with a positioning hole IV (55). The positioning hole IV (55) corresponds to the position of the positioning hole III (54) on the right part of the shaft section VI (51). The inner ring of the experimental turntable (37) is fixed to the right part of the shaft section VI (51) by screws to axially position the shaft sleeve II (23). The extended seal (30) and the inner seal (36) both include a front baffle (61), a sealing sheet (62), and a rear baffle (63).

3. The test bench for testing the performance of externally extending and internally extending flexible seals according to claim 1, characterized in that: A positioning hole II (53) is provided in the shaft sleeve I (10), and the positioning hole II (53) corresponds to the position of the positioning hole I (52) of the shaft section II. The shaft sleeve I (10) is provided with a boss I (57) for preventing large particles of impurities from entering the interior of the bearing device (4). The shaft sleeve II (23) is provided with a boss II (58) for enhancing the sealing performance of the bearing device (4).

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