High-pressure water jet driving trolley system testing device

Abstract

The utility model discloses a high-pressure water jet driven trolley system testing device, which comprises a gas storage tank, a water storage tank, a jet nozzle, a trolley and a speed measuring device, and is characterized in that the gas storage tank and the water storage tank are both pressure containers, and a gas outlet of the gas storage tank is connected with a gas inlet of the water storage tank; the vertical pipeline is installed at the lower end of the water storage tank and communicated with the interior of the water storage tank, and the quick valve is installed on the vertical pipeline. The horizontal pipeline is installed on the adjustable support and connected with the vertical pipeline through the arc-shaped bent pipe, and the jet flow nozzle is installed at the tail end of the horizontal pipeline. The trolley is mounted on a track in front of the adjustable support, a water scoop is mounted at the front part of the trolley, and an aviation test piece model is placed on the trolley; and the speed measuring device is used for measuring the moving speed of the trolley on the track. According to the utility model, the driving efficiency of the high-pressure water jet linear motion trolley can be researched.

Description

Technical Field

[0001] The utility model belongs to the field of aviation ground test equipment, relates to aviation test equipment for conducting dynamic tests, and particularly relates to a test device for a high-pressure water jet-driven trolley system. Background Technique

[0002] A conventional application of water jets is to impact water turbines. However, its working pressure is not high, restricted by the height difference of the reservoir, generally not exceeding 1 MPa, and an efficient driving effect cannot be obtained.

[0003] CN110726530A discloses a test device for unsteady flow jet reverse thrust. By using a passive high-pressure gas in a pressure vessel to push high-pressure water out of a nozzle, a flow state environment of unsteady high-pressure water jet is constructed. By applying a simulated load and real-time detecting the air pressure, water pressure and jet reverse thrust in the pressure vessel, the dynamic evolution process and technical parameters of unsteady flow jet reverse thrust and gas / liquid pressure under different load conditions can be obtained.

[0004] CN106066234A discloses an experimental bench for measuring parameters of a small-diameter high-pressure water jet. This solution connects a force sensor to a flat plate and uses a technology of high-pressure water jet and experimental bench in the directions of measuring devices, fluid dynamics tests, testing of machine / structural components, etc., achieving the effects of small appearance, convenient measurement data, and convenient disassembly and assembly.

[0005] None of the above-mentioned prior arts involve the effect of the equipment under test being pushed by high-pressure water. Summary of the Invention

[0006] The purpose of the utility model is to provide a test device for a high-pressure water jet-driven trolley system to study the driving efficiency problem of a trolley driven by a high-pressure water jet moving linearly.

[0007] To achieve the above task, the utility model adopts the following technical solutions:

[0008] A test device for a high-pressure water jet-driven trolley system includes: an air storage tank, a water storage tank, a jet nozzle, a trolley and a speed measuring device, wherein:

[0009] Both the air storage tank and the water storage tank are pressure vessels. The air release port of the air storage tank is connected to the air inlet of the water storage tank; a vertical pipe is installed at the lower end of the water storage tank and is communicated with the inside of the water storage tank. A quick valve is installed on the vertical pipe; a horizontal pipe is installed on an adjustable support and is connected to the vertical pipe through an arc-shaped elbow. The jet nozzle is installed at the end of the horizontal pipe; the trolley is installed on a track in front of the adjustable support. A water bucket is installed at the front of the trolley, and an aviation test piece model is placed on the trolley; the speed measuring device is used to measure the moving speed of the trolley on the track.

[0010] Furthermore, the test device further includes an air source, which is connected to the inflation port of the gas storage tank; the air source uses an air respirator inflation pump.

[0011] Furthermore, the speed measuring device includes a laser reflection plate and a laser rangefinder. The laser reflection plate is installed on the side of the trolley, and the laser rangefinder is installed behind the track. The position of the trolley is measured in real time by the laser rangefinder and the laser reflection plate to calculate the speed of the trolley.

[0012] Furthermore, a water injection port is provided on the water storage tank and a water injection valve is installed.

[0013] Furthermore, safety valves are provided on both the gas storage tank and the water storage tank for relieving pressure when the internal pressure exceeds the standard.

[0014] Furthermore, the quick valve can be an electromagnetic valve, and the opening time of the electromagnetic valve does not exceed 0.1 s.

[0015] Furthermore, a hydraulic rod or a screw is provided at the bottom of the adjustable support so that the height position and angle of the horizontal pipeline can be adjusted.

[0016] Furthermore, the end of the jet nozzle is of a tapered structure, and the profile curve of the tapered structure is a contraction curve, and the contraction curve includes a cubic curve, a quintic curve, a Weibull curve, and a straight line.

[0017] Furthermore, the jet nozzle is connected to the horizontal pipeline by a thread.

[0018] Furthermore, sliders are provided at the bottom of the trolley, and the sliders are assembled on the track.

[0019] Compared with the prior art, the utility model has the following technical characteristics:

[0020] The utility model is driven by high-pressure water jet, uses compressed air to provide energy, and controls the water flow switch by an electromagnetic valve; the water jet is used to drive the trolley, the water jet nozzle adopts a contraction-type curve, the trolley moves on a straight track, and an aviation test piece model is placed on the trolley. The utility model has the characteristics of low construction and use cost, reusability, and high driving efficiency. Using the high-pressure water jet for the ground test of aviation equipment is beneficial to solving the driving efficiency problem of aviation test equipment and studying the performance of the trolley driven by the high-pressure water jet. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of the utility model;

[0022] Figure 2 is the detailed view of the nozzle and trolley parts;

[0023] Figure 3It is a three-dimensional structural schematic diagram of the nozzle and trolley parts.

[0024] Explanation of the reference numerals in the figure: 1 air source, 2 air storage tank, 3 water storage tank, 4 vertical pipeline, 5 quick valve, 6 horizontal pipeline, 7 jet nozzle, 8 water bucket, 9 trolley, 10 aviation test piece model, 11 track, 12 laser reflector, 13 laser rangefinder, 14 water injection valve, 15 adjustable support, 16 slider. Specific implementation mode

[0025] Aviation equipment ground tests require obtaining a speed of more than 120 m / s required for aircraft movement. The alternative driving test equipment includes rocket sled rails, hydraulic counter-thrust, compressed air ejection, steam ejection, or electromagnetic ejection, etc. Rockets are pyrotechnic devices and non-reusable consumables, with high usage costs; the hydraulic counter-thrust drive uses the method of placing a water container on the trolley. Since the water container is an additional non-effective payload, the drive efficiency is low; the working medium used for compressed air or steam is air. Since the air density is several orders of magnitude smaller than the water density, the energy transfer efficiency is low; the construction cost of electromagnetic ejection is high. Compared with other driving test equipment, the high-pressure water jet drive utilized by the present invention has the characteristics of low construction and usage costs, being reusable, and high drive efficiency.

[0026] See the appendix Figures 1 to 3 , the present invention provides a high-pressure water jet-driven trolley system test device, including an air source 1, an air storage tank 2, a water storage tank 3, a vertical pipeline 4, a quick valve 5, a horizontal pipeline 6, a jet nozzle 7, a water bucket 8, a trolley 9, a track 11, a speed measurement device, a water injection valve 14, an adjustable support 15, and a slider 16, wherein:

[0027] The air source 1 uses an air respirator air pump and can provide compressed air above 30 MP. The air source 1 is connected to the air inlet of the air storage tank 2;

[0028] The air storage tank 2 is a pressure vessel for storing compressed air for energy storage; the air inlet of the air storage tank 2 is connected to the air source 1, and the air outlet of the air storage tank 2 is connected to the air inlet of the water storage tank 3;

[0029] The water storage tank 3 is used to store the driving medium. In this embodiment, the driving medium is water; a water injection port is provided on the water storage tank 3 and a water injection valve 14 is installed; safety valves are provided on both the air storage tank 2 and the water storage tank 3 for relieving pressure when the internal pressure exceeds the standard;

[0030] The vertical pipeline 4 is installed at the lower end of the water storage tank 3 and is internally connected to the water storage tank 3; the quick valve 5 is installed in the middle of the vertical pipeline 4. The quick valve is used for opening and closing the high-pressure water jet; among them, the quick valve 5 can adopt an electromagnetic valve, and the opening time is required to be no more than 0.1 s;

[0031] The horizontal pipe 6 is installed on the adjustable support 15 and is connected to the vertical pipe 4 through an arc-shaped elbow. A hydraulic rod or a screw is provided at the bottom of the adjustable support 15, so that the height position and the angle of the horizontal pipe 6 can be adjusted, which is convenient for the installation of the horizontal pipe 6 and the cooperation with the water bucket 8.

[0032] The jet nozzle 7 is installed at the end of the horizontal pipe 6. The end of the jet nozzle 7 is a tapered structure. The profile curve of the tapered structure can be selected from different shrinkage curves according to actual needs, such as cubic curve, quintic curve, Weibull curve, straight line, etc. The jet nozzle 7 is connected to the horizontal pipe 6 by a thread, and different types of jet nozzles 7 can be replaced according to test requirements.

[0033] The trolley 9 is installed on the track 11 in front of the adjustable support 15. The track 11 is installed and fixed through the lower bracket. The water bucket 8 is installed at the front of the trolley 9, and the aviation test piece model 10 is placed on the trolley 9. A slider 16 is provided at the bottom of the trolley 9, and the slider 16 is assembled on the track 11. The track 11 uses a high-precision linear slide rail. In order to make the trolley 9 obtain a higher speed, the weight of the trolley 9 should be reduced as much as possible, and the frame structure of the trolley 9 is made of aluminum alloy profiles. The high-pressure water jet is provided by the jet nozzle 7 and sprayed onto the water bucket 8, and the impact force is transmitted to the trolley 8, so that the trolley 8 drives the aviation test piece model 10 to slide at a high speed along the track 11.

[0034] Among them, the water bucket 8 is used to bear the impact of the high-pressure water jet. The water bucket 8 is connected to the trolley 9 by bolts and can be replaced. The water bucket 8 is a member with an arc-shaped front end.

[0035] The speed measurement device includes a laser reflector 12 and a laser rangefinder 13. The laser reflector 12 is installed on the side of the trolley 9, and the laser rangefinder 13 is installed behind the track 11. The position of the trolley 9 is measured in real time through the laser rangefinder 13 and the laser reflector 12, and the speed of the trolley 9 is obtained by differential calculation of the curve of the position of the trolley 9 changing with time.

[0036] The test device of the present utility model is used for the ground test of aviation equipment. The device is driven by a high-pressure water jet, uses compressed air to provide energy, and the electromagnetic valve controls the water flow switch. The water jet is used to drive the trolley ⑨. The jet nozzle 7 adopts a contraction type curve. The trolley 9 moves on the straight track 11, and the aviation test piece model 10 is placed on the trolley 9, and the driving efficiency problem of driving the trolley 9 moving in a straight line by a high-pressure water jet can be studied.

[0037] The working process of the present utility model is as follows:

[0038] 1) Close the quick valve 5;

[0039] 2) Fill the water storage tank 3 with water by using the water injection valve 14;

[0040] 3) Open the gas source 1 to fill the gas storage tank 2 with gas to the specified pressure;

[0041] 4) Move the trolley 9 to the initial departure position on the track 11;

[0042] 5) Open the quick valve 5 to form a high-pressure water jet using the jet nozzle 7, and the trolley 9 runs along the track 11 under the impact of the water jet;

[0043] 6) The speed measuring device records the position of the trolley 9 in real time and calculates the speed of the trolley 9;

[0044] 7) Close the quick valve 5;

[0045] 8) The trolley 9 naturally decelerates and stops moving, preparing for the next test.

[0046] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A test device for a high-pressure water jet-driven trolley system, characterized in that Comprising: An air storage tank (2), a water storage tank (3), a jet nozzle (7), a trolley (9) and a speed measuring device, wherein: Both the air storage tank (2) and the water storage tank (3) are pressure vessels. The air release port of the air storage tank (2) is connected to the air inlet of the water storage tank (3); A vertical pipe (4) is installed at the lower end of the water storage tank (3) and is in communication with the inside of the water storage tank (3). A quick valve (5) is installed on the vertical pipe (4); A horizontal pipe (6) is installed on an adjustable support (15) and is connected to the vertical pipe (4) through an arc-shaped elbow. The jet nozzle (7) is installed at the end of the horizontal pipe (6); The trolley (9) is installed on a track (11) in front of the adjustable support (15). A water bucket (8) is installed at the front of the trolley (9). An aviation test piece model (10) is placed on the trolley (9); The speed measuring device is used to measure the moving speed of the trolley (9) on the track (11).

2. The test device for the high-pressure water jet-driven trolley system according to claim 1, characterized in that, The test device further includes an air source (1), and the air source (1) is connected to the air filling port of the air storage tank (2); The air source (1) uses an air breathing apparatus air pump.

3. The test device for the high-pressure water jet-driven trolley system according to claim 1, characterized in that, The speed measuring device includes a laser reflector (12) and a laser rangefinder (13). The laser reflector (12) is installed on the side of the trolley (9), and the laser rangefinder (13) is installed behind the track (11). The position of the trolley (9) is measured in real time through the laser rangefinder (13) and the laser reflector (12) to calculate the speed of the trolley (9).

4. The test device for the high-pressure water jet-driven trolley system according to claim 1, characterized in that A water injection port is provided on the water storage tank (3) and a water injection valve (14) is installed.

5. The test device for the high-pressure water jet-driven trolley system according to claim 1, characterized in that Safety valves are provided on both the air storage tank (2) and the water storage tank (3) for relieving pressure when the internal pressure exceeds the standard.

6. The test device for the high-pressure water jet-driven trolley system according to claim 1, characterized in that The quick valve (5) can adopt an electromagnetic valve, and the opening time of the electromagnetic valve does not exceed 0.1 s.

7. The test device for the high-pressure water jet-driven trolley system according to claim 1, characterized in that, A hydraulic rod or a screw is provided at the bottom of the adjustable support (15) so that the height position and angle of the horizontal pipe (6) can be adjusted.

8. The high-pressure water jet-driven trolley system test device according to claim 1, characterized in that, The end of the jet nozzle (7) is of a tapered structure, and the profile curve of the tapered structure is a contraction curve. The contraction curve includes a cubic curve, a quintic curve, a Weibull curve or a straight line.

9. The test device for the high-pressure water jet-driven trolley system according to claim 1, characterized in that, The jet nozzle (7) is threadedly connected to the horizontal pipe (6).

10. The high-pressure water jet-driven trolley system test device according to claim 1, characterized in that Sliders (16) are provided at the bottom of the trolley (9), and the sliders (16) are assembled on the track (11).

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