A propeller performance test system

Abstract

The invention discloses a propeller performance test system, which includes: a power system, a dynamic torque tester, a test fixture shaft, a propeller fixture, a linear moving unit, a fixed support assembly, a tension tester, and a force conversion bracket system. Through the system, a simple principle and a reliable structure are achieved, and the working efficiency points of propellers of different screw diameters and different types can be achieved, which is of great help in improving the efficiency of underwater equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of performance testing, and in particular to a propeller performance testing system. Background Art

[0002] Propellers are one of the main propulsion methods for surface equipment, and the prediction of their hydrodynamic performance mainly relies on experiments and numerical methods. The thrust of propellers of the same size and shape increases with the increase of speed, but when the speed increases to a certain range, cavitation will occur (because the propeller runs at high speed in the water, the pressure on the back of the blade will gradually decrease with the increase of speed. When the pressure drops below a certain critical value (saturated vapor pressure), liquid water may rapidly vaporize, and the gas core expands due to the entry of water vapor, forming cavitation). The phenomenon causes the thrust to be small and will be reduced, and the working efficiency will be greatly reduced. The main hazards of cavitation are as follows: damage to the basic performance of the propeller, such as reducing the propeller thrust and efficiency; causing erosion on the blade surface; destroying the blade structure to reduce its life; and generating strong radiation noise.

[0003] Therefore, determining the optimal working efficiency point of the propeller and preventing the occurrence of cavitation can effectively improve the working efficiency of underwater equipment.

[0004] In the current technology, the principle is complicated and it is impossible to achieve the working efficiency points of propellers with different screw diameters and different types, thereby improving the efficiency of underwater equipment. Summary of the invention

[0005] In view of the above technical problems in the related art, the present invention proposes a propeller performance testing system, which can overcome the above deficiencies in the prior art.

[0006] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows:

[0007] A propeller performance test system, the system comprising: a power system, a dynamic torque tester, a test fixture shaft, a propeller fixture, a linear moving unit, a fixed support assembly, a tension tester, and a force conversion bracket system; the power system is provided with a motor, a sealed shell is provided on the outside of the motor, the sealed shell is connected to the right side of the motor, the left side of the sealed shell is connected to a rear shell through a plurality of O-rings at the upper and lower ends, one side of the rear shell is connected to a power line, and a ferrule plug is provided at the lower end of the rear shell; the right side of the sealed shell is connected to a motor bracket by bolts, a pressing sheet is provided between the middle part of the sealed shell and the motor bracket, and the bottom of the motor bracket The right side of the power system is connected to the dynamic torque tester through a coupling, and the dynamic torque tester includes a dynamic torque sensor, and a torque tester bracket is connected to the lower side of the dynamic torque sensor, and the torque tester bracket is connected to the linear moving unit through bolts; the right side of the dynamic torque tester is connected to the test fixture shaft through the coupling, and the test fixture shaft includes a test shaft, and the outer side of the test shaft is connected to a test outer ring, and the two ends of the inner side are connected to support positioning components; the right side of the test fixture shaft is connected to the propeller tooling, and the propeller tooling includes a deflector, and the outer side of the deflector is provided with a There is a front-end clamp device, the bottom of the outer side of the air deflector is connected to the air deflector base set by the front-end clamp device; the front-end clamp device includes a clamp, the inside of the clamp is connected to a long bolt, the clamp moves up and down along the long bolt, a nut is provided on the upper part of the clamp, and the nut is connected to the long bolt; the lower ends of the long bolt and the air deflector base are respectively connected to the lower side pressure plate and the long bolt passes through the lower side pressure plate, and the lower side of the lower side pressure plate is connected to the side plate support frame; the left side of the front-end clamp device is connected to the rear-end clamp device by bolts, and the rear-end clamp device includes a U-shaped base, the upper end of the U-shaped base is provided with a T-slot table, and the T-slot The slot table is connected to the U-shaped base through a plurality of circular columns, and the circular columns pass through the T-slot table, and a rear end clamp device is connected in the middle of the T-slot table, and the rear end clamp device includes a T-shaped long bolt, and the structure provided on the T-shaped long bolt is the same as the structure provided on the long bolt; the propeller tooling is connected to the linear moving unit, and the linear moving unit includes a moving plate, and side support plates are fixedly connected to both sides of the moving plate, an optical axis is connected to the bottom of the moving plate, and a moving slider is connected to the outer side of the optical axis, and optical axis support seats are provided at both ends of the optical axis, and the optical axis support seats clamp the optical axis and are bolted to the fixed support assembly;The fixed support assembly includes a channel steel bracket, the bottom of the channel steel bracket is connected to an aluminum alloy bracket, the upper part of the linear moving unit and the fixed support assembly is connected to a force conversion bracket system, the force conversion bracket system includes a triangular support frame 1, the upper part of the triangular support frame 1 is provided with a support shaft, the support shaft passes through the triangular support frame 1 and is clamped and connected by linear sliding bearings on both sides of the triangular support frame 1, an axial fixed retaining spring is provided between the linear sliding bearing and the support shaft, support seats are provided at both ends of the support shaft, the support shaft passes through the support seat and is clamped by the support seat, and the support seats on both sides are respectively fixedly connected with triangular support frame 2 and triangular support frame 3 by bolts; the left side of the triangular support frame 1 is connected to a tensile tester, the tensile tester includes a mounting cross bar, the upper side of the mounting cross bar is provided with a tensile pressure sensor, the tensile pressure sensor is connected to the mounting cross bar through a lower adjustment bolt, and the upper side of the tensile pressure sensor is connected to a sensor mounting plate through an upper adjustment bolt. ;

[0008] Furthermore, the motor and the sealed housing are connected by bolts and slots; the support seat is provided with a slot corresponding to the support shaft; and the triangular support frame is provided with a hole corresponding to the support shaft.

[0009] Furthermore, there is an oil cavity between the motor and the sealed housing; there is a raised cross bar at the right end of the motor, and the sealed housing, motor bracket, and clamping plate are provided with holes corresponding to the raised cross bar; and a groove corresponding to the ferrule plug is provided at the lower end of the rear shell.

[0010] Furthermore, a channel is provided in the middle of the coupling, and the channel is circular.

[0011] Furthermore, there are two couplings.

[0012] Furthermore, the test outer ring is provided with a channel with openings at both ends.

[0013] Furthermore, the support and positioning assembly includes a support bearing and a retaining spring, wherein the support bearing is used for radial support of the shaft; the retaining spring includes an inner retaining spring and an outer retaining spring, and is used for axial positioning of the shaft.

[0014] Furthermore, the air guide cover includes two layers, the outer layer is circular, and the inner layer is composed of a plurality of fan gears, and the inner side is connected to the right end of the test shaft of the test fixture shaft.

[0015] Furthermore, the T-slot platform is provided with circular holes corresponding to the circular columns, and there are four circular columns.

[0016] Furthermore, the T-slot table is provided with a plurality of T-channels; the clamp is provided with a plurality of elliptical holes, and the elliptical holes correspond to the long bolts; there are two T-shaped long bolts; and the clamp is provided with holes corresponding to the T-shaped long bolts.

[0017] The beneficial effects of the present invention are as follows: through the system, a simple principle and a reliable structure are achieved, and the working efficiency points of propellers of different screw diameters and different types can be achieved, which is of great help in improving the efficiency of underwater equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a cross-sectional view of a propeller performance testing system according to an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of a propeller performance test system according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 3 Schematic diagram of a propeller performance test system according to an embodiment of the present invention. Figure 2 ;

[0022] In the figure: 100, power system, 101, motor, 102, sealing housing, 103, motor bracket, 104, coupling, 105, clamping plate, 106, raised cross bar, 107, power cord, 108, O-ring, 109, ferrule plug, 110, oil chamber, 200, dynamic torque tester, 201, dynamic torque sensor, 202, torque tester bracket, 300, test fixture shaft, 301, test shaft, 302, test outer ring, 303, support bearing, 304, retaining ring, 400, propeller fixture, 401, deflector, 402, fixture, 403, U-shaped base, 404, T-slot table, 405, T-shaped long bolt, 4021, long bolt , 4022, nut, 4023, side plate support frame, 4024, air deflector base, 4025, lower side pressure plate, 500, linear moving unit, 501, moving slider, 502, optical axis, 503, optical axis support seat, 504, moving plate, 505, side support plate, 600, fixed support assembly, 601, channel steel bracket, 602, aluminum alloy bracket, 700, tensile tester, 701, mounting cross bar, 702, upper adjustment bolt, 703, lower adjustment bolt, 704, tension pressure sensor, 705, sensor mounting plate, 800, force conversion bracket system, 801, linear sliding bearing, 802, support shaft, 803, support seat, 804, triangular support frame one. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0024] like Figure 1-3As shown, a propeller performance test system according to an embodiment of the present invention includes: a power system 100, a dynamic torque tester 200, a test fixture shaft 300, a propeller fixture 400, a linear moving unit 500, a fixed support assembly 600, a tension tester 700, and a force conversion bracket system 800; the power system 100 is provided with a motor 101, and a sealed shell 102 is provided outside the motor 101, and the sealed shell 102 is connected to the right side of the motor 101, and the left side of the sealed shell 102 is connected to a rear shell through a plurality of O-rings 108 at the upper and lower ends, and a power line 107 is connected to one side of the rear shell, and a ferrule plug 109 is provided at the lower end of the rear shell; the right side of the sealed shell 102 is connected to The motor bracket 103, a compression sheet 105 is provided between the sealed housing 102 and the middle part of the motor bracket 103, and the bottom of the motor bracket 103 is connected to the linear moving unit 500; the right side of the power system 100 is connected to the dynamic torque tester 200 through a coupling 104, and the dynamic torque tester 200 includes a dynamic torque sensor 201, and a torque tester bracket 202 is connected to the linear moving unit 500 through bolts; the right side of the dynamic torque tester 200 is connected to the test fixture shaft 300 through the coupling 104, and the test fixture shaft 300 includes a test shaft 301, and the test shaft The outer side of 301 is connected to a test outer ring 302, and the two ends of the inner side are connected to support and positioning components; the right side of the test fixture shaft 300 is connected to the propeller fixture 400, and the propeller fixture 400 includes a deflector 401, and a front-end clamp device is provided on the outer side of the deflector 401, and the outer bottom of the deflector 401 is connected to a deflector base 4025 provided with the front-end clamp device; the front-end clamp device includes a fixture 402, and the interior of the fixture 402 is connected to a long bolt 4021), and the fixture 402 moves up and down along the long bolt 4021, and a nut 4022 is provided on the upper part of the fixture 402, and the nut 4022 is connected to the long bolt 4021; the long bolt 4021, the deflector base 4024 The lower ends are respectively connected with lower side pressing plates 4025 and the long bolts 4021 pass through the lower side pressing plates 4025, and the lower side of the lower side pressing plates 4025 is connected with side plate support frames 4023; the left side of the front end clamp device is connected with a rear end clamp device by bolts, and the rear end clamp device includes a U-shaped base 403, and a T-slot platform 404 is provided at the upper end of the U-shaped base 403, and the T-slot platform 404 is connected to the U-shaped base 403 through a plurality of circular columns and the circular columns pass through the T-slot platform 404, and the middle of the T-slot platform 404 is connected with a rear end clamp device, and the rear end clamp device includes a T-shaped long bolt 405, and the structure provided on the T-shaped long bolt 405 is the same as the structure provided on the long bolt 4021;The propeller tooling 400 is connected to the linear motion unit 500, and the linear motion unit 500 includes a moving plate 504, and side support plates 505 are fixedly connected on both sides of the moving plate 504. The bottom of the moving plate 504 is connected to an optical axis 502, and a moving slider 501 is connected to the outer side of the optical axis 502. Optical axis support seats 503 are provided at both ends of the optical axis 502. The optical axis support seats 503 clamp the optical axis 502 and are bolted to the fixed support assembly 600; the fixed support assembly 600 includes a channel steel bracket 601, and an aluminum alloy bracket 602 is connected to the bottom of the channel steel bracket 601. The upper part of the linear motion unit 500 and the fixed support assembly 600 is connected to a force conversion bracket system 800, and the force conversion bracket system 800 includes a triangular support frame 804, and the upper part of the triangular support frame 804 is provided with a support shaft 802. 2 passes through the triangular support frame 1 804 and is clamped by the linear sliding bearings 801 on both sides of the triangular support frame 1 804. An axial fixing spring is arranged between the linear sliding bearing 801 and the support shaft 802. Support seats 803 are arranged at both ends of the support shaft 802. The support shaft 802 passes through the support seat 803 and is clamped by the support seat 803. The support seats 803 on both sides are respectively fixedly connected with the triangular support frame 2 and the triangular support frame 3 by bolts; the left side of the triangular support frame 1 804 is connected with a tensile tester 700, and the tensile tester 700 includes a mounting cross bar 701. A tensile pressure sensor 704 is arranged on the upper side of the mounting cross bar 701. The tensile pressure sensor 704 is connected to the mounting cross bar 701 through a lower adjustment bolt 703. The upper side of the tensile pressure sensor 704 is connected with a sensor mounting plate 705 through an upper adjustment bolt 702. ;

[0025] In a specific embodiment of the present invention, the motor 101 and the sealed housing 102 are connected by bolts and slots; the support seat 803 is provided with a slot corresponding to the support shaft 802; and the triangular support frame 804 is provided with a hole corresponding to the support shaft 802.

[0026] In a specific embodiment of the present invention, an oil chamber 110 is provided between the motor 101 and the sealing housing 102; a raised cross bar 106 is provided at the right end of the motor 101, and holes corresponding to the raised cross bar 106 are provided at the sealing housing 102, the motor bracket 103, and the clamping plate 105; a groove corresponding to the ferrule plug 109 is provided at the lower end of the rear shell.

[0027] In a specific embodiment of the present invention, a channel is provided in the middle of the coupling 104, and the channel is circular.

[0028] In a specific embodiment of the present invention, there are two couplings 104 .

[0029] In a specific embodiment of the present invention, the test outer ring 302 is provided with a channel with openings at both ends.

[0030] In a specific embodiment of the present invention, the support and positioning assembly includes a support bearing 303 and a retaining spring 304. The support bearing 303 is used for radial support of the shaft; the retaining spring 304 includes an inner retaining spring and an outer retaining spring, and is used for axial positioning of the shaft.

[0031] In a specific embodiment of the present invention, the air guide cover 401 includes two layers, the outer layer is circular, and the inner layer is composed of a plurality of fan gears, and the inner side is connected to the right end of the test shaft 301 of the test fixture shaft 300 .

[0032] In a specific embodiment of the present invention, the T-slot platform 405 is provided with circular holes corresponding to the circular columns, and there are four circular columns.

[0033] In a specific embodiment of the present invention, the T-slot table 404 is provided with a plurality of T-channels; the clamp 402 is provided with a plurality of elliptical holes, and the elliptical holes correspond to the long bolts 4022; there are two T-shaped long bolts 405; and the clamp 402 is provided with holes corresponding to the T-shaped long bolts 405.

[0034] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below.

[0035] In specific use, the motor 101 is connected to the dynamic torque tester 200 through the coupling 104, the dynamic torque tester 200 is connected to the test fixture shaft 300 through the coupling 104, the test fixture shaft 300 is connected to the propeller bolt, and the deflector 401 is fastened and adjusted by the rear end fixture on the propeller fixture 400. The upper and lower positions of the test fixture shaft 300 and the rear propeller can be adjusted by moving the T-slot table 404 up and down through the large adjustment bolt and the adjustment nut, and the multiple rows of T-slots on the T-slot can achieve the adjustment of the front and rear positions. All the components on the upper side of the moving plate 504 can achieve the trend of moving forward and backward by driving the moving slider. The moving slide is supported by the optical axis 502, and the optical axis 502 is connected to the optical axis support seat 503 at both ends. The optical axis support seat 503 is threadedly connected to the channel steel bracket 601, and the aluminum alloy bracket 602 is bolted to the channel steel bracket 601. The entire aluminum alloy bracket 602 is connected by an aluminum alloy fastening connector. The lower end of the triangular support frame is connected to the moving plate 504 through the side support plate 505, and the middle hole of the upper end is connected to the support shaft 802. The support shaft 802 and the linear sliding bearing 801 are axially positioned by the retaining springs at both ends, and the front end is partially bolted to the tensile tester.

[0036] When the motor is powered on to drive the propeller to rotate, the propeller will drive the upper part of the movable plate 504 to move forward and backward. This movement trend converts the force of the horizontal forward and backward movement into the upward and downward pulling pressure at the end of the tensile tester through the triangular support frame, thereby realizing the collection of pulling and pressure data. In this process, the dynamic torque can record data such as speed and torque. By analyzing these data, it can be obtained that as the speed of the propeller increases, the thrust decreases from large to small, and the working efficiency points of different propellers can be obtained.

[0037] In summary, with the aid of the above technical solution of the present invention, through the system, a simple principle and reliable structure are achieved, and the working efficiency points of propellers of different screw diameters and different types can be achieved, which is of great help in improving the efficiency of underwater equipment.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A propeller performance test system, characterized in that: include: A power system (100), a dynamic torque tester (200), a test fixture shaft (300), a propeller fixture (400), a linear moving unit (500), a fixed support assembly (600), a tensile tester (700), and a force conversion support system (800); the power system (100) is provided with a motor (101), a sealed housing (102) is provided outside the motor (101), the sealed housing (102) is connected to the right side of the motor (101), the left side of the sealed housing (102) is connected to a rear housing via a plurality of O-rings (108) at the upper and lower ends, one side of the rear housing is connected to a power line (107), and the lower end of the rear housing is A ferrule plug (109) is provided; the right side of the sealing housing (102) is connected to a motor bracket (103) by bolts; a pressing sheet (105) is provided between the middle parts of the sealing housing (102) and the motor bracket (103); the bottom of the motor bracket (103) is connected to the linear moving unit (500); the right side of the power system (100) is connected to the dynamic torque tester (200) by a coupling (104); the dynamic torque tester (200) includes a dynamic torque sensor (201); the lower side of the dynamic torque sensor (201) is connected to a torque tester bracket (202); the torque tester bracket (20 2) connected to the linear moving unit (500) by bolts; the right side of the dynamic torque tester (200) is connected to the test fixture shaft (300) through the coupling (104), and the test fixture shaft (300) includes a test shaft (301), and the outer side of the test shaft (301) is connected to a test outer ring (302), and the two ends of the inner side are connected to support positioning components; the right side of the test fixture shaft (300) is connected to the propeller fixture (400), and the propeller fixture (400) includes a shroud (401), and the outer side of the shroud (401) is provided with a front end fixture device, and the outer bottom of the shroud (401) is connected to the front end fixture device. The front end clamp device comprises a clamp (402), the interior of the clamp (402) is connected to a long bolt (4021), the clamp (402) moves up and down along the long bolt (4021), a nut (4022) is provided on the upper part of the clamp (402), and the nut (4022) is connected to the long bolt (4021); the lower ends of the long bolt (4021) and the air deflector base (4024) are respectively connected to a lower side pressing plate (4025), and the long bolt (4021) passes through the lower side pressing plate (4025), and the lower side of the lower side pressing plate (4025) is connected to a side plate support frame (4023);The left side of the front-end clamp device is connected to the rear-end clamp device by bolts, and the rear-end clamp device includes a U-shaped base (403), and a T-shaped slot platform (404) is provided at the upper end of the U-shaped base (403), and the T-shaped slot platform (404) is connected to the U-shaped base (403) through a plurality of circular columns, and the circular columns pass through the T-shaped slot platform (404), and the middle of the T-shaped slot platform (404) is connected to the rear-end clamp device, and the rear-end clamp device includes a T-shaped long bolt (405), and the structure provided on the T-shaped long bolt (405) is the same as the structure provided on the long bolt (4021); the propeller tooling (400) is connected to the linear motion unit The linear moving unit (500) is connected with a fixed support assembly (500), the linear moving unit (500) comprises a moving plate (504), the two sides of the moving plate (504) are fixedly connected with side support plates (505), the bottom of the moving plate (504) is connected with an optical axis (502), the outer side of the optical axis (502) is connected with a moving slider (501), both ends of the optical axis (502) are provided with optical axis support seats (503), the optical axis support seats (503) clamp the optical axis (502) and are bolted to the fixed support assembly (600); the fixed support assembly (600) comprises a channel steel bracket (601), the bottom of the channel steel bracket (601) is connected with an aluminum alloy bracket (602) The linear moving unit (500) and the fixed support assembly (600) are connected to a force conversion support system (800) at their upper parts. The force conversion support system (800) includes a triangular support frame (804). A support shaft (802) is provided at the upper part of the triangular support frame (804). The support shaft (802) passes through the triangular support frame (804) and is clamped and connected by linear sliding bearings (801) on both sides of the triangular support frame (804). An axial fixing spring is provided between the linear sliding bearing (801) and the support shaft (802). Support seats (803) are provided at both ends of the support shaft (802). The support shaft (802) passes through the triangular support frame (804). The support base (803) is passed through and clamped by the support base (803), and the support bases (803) on both sides are respectively fixedly connected with the second and third triangular support frames by bolts; the left side of the first triangular support frame (804) is connected with a tensile tester (700), and the tensile tester (700) includes a mounting cross bar (701), and a tensile pressure sensor (704) is provided on the upper side of the mounting cross bar (701), and the tensile pressure sensor (704) is connected to the mounting cross bar (701) through a lower adjustment bolt (703), and the upper side of the tensile pressure sensor (704) is connected with a sensor mounting plate (705) through an upper adjustment bolt (702). ; 2. A propeller performance testing system according to claim 1, characterized in that: The motor (101) and the sealed housing (102) are connected via bolts and slots; the support seat (803) is provided with a slot corresponding to the support shaft (802); and the triangular support frame (804) is provided with a hole corresponding to the support shaft (802).

3. A propeller performance testing system according to claim 1, characterized in that: An oil chamber (110) is provided between the motor (101) and the sealing housing (102); a raised cross bar (106) is provided at the right end of the motor (101); holes corresponding to the raised cross bar (106) are provided on the sealing housing (102), the motor bracket (103) and the clamping sheet (105); and a groove corresponding to the ferrule plug (109) is provided at the lower end of the rear housing.

4. A propeller performance testing system according to claim 1, characterized in that: A channel is provided in the middle of the coupling (104), and the channel is circular.

5. A propeller performance testing system according to claim 1, characterized in that: There are two couplings (104).

6. A propeller performance testing system according to claim 1, characterized in that: The test outer ring (302) is provided with a channel with openings at both ends.

7. A propeller performance testing system according to claim 1, characterized in that: The support and positioning assembly comprises a support bearing (303) and a retaining spring (304). The support bearing (303) is used for radial support of the shaft; the retaining spring (304) comprises an inner retaining spring and an outer retaining spring, and is used for axial positioning of the shaft.

8. A propeller performance testing system according to claim 1, characterized in that: The deflector (401) comprises two layers, the outer layer is circular, the inner layer is composed of a plurality of fan gears, and the inner side is connected to the right end of the test shaft (301) of the test fixture shaft (300).

9. A propeller performance testing system according to claim 1, characterized in that: The T-slot platform is provided with round holes corresponding to the circular columns, and there are four circular columns.

10. A propeller performance testing system according to claim 1, characterized in that: The T-slot platform (404) is provided with a plurality of T-channels; the clamp (402) is provided with a plurality of elliptical holes, and the elliptical holes correspond to the long bolts; there are two T-shaped long bolts (405); and the clamp (402) is provided with holes corresponding to the T-shaped long bolts (405).

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