An experimental inspection device for the anti-fatigue performance of pneumatic loads of electromechanical equipment in tunnels

Abstract

The present invention discloses a pneumatic load anti-fatigue performance test and inspection device for electromechanical equipment in a tunnel, comprising: a soundproof chamber, inside which there is a rotary test bench for placing a test piece, and air intake ports are provided on two opposite side surfaces of the rotary test bench, and wind pressure sensors and displacement sensors are provided on two opposite side surfaces of the test piece; an air storage tank, which is located on one side of the soundproof chamber, and the air storage tank is communicated with the soundproof chamber through a manual air valve fixed on one side wall of the air storage tank, and the air outlet of the manual air valve is arranged corresponding to the air intake port; an axial flow fan, which is arranged at the top of the air storage tank, and the air outlet of the axial flow fan is communicated with the inside of the air storage tank; a control console, which is electrically connected to the rotary test bench and the axial flow fan, and the displacement sensor and the wind pressure sensor are wirelessly connected to the control console. This device replaces the traditional double-sided opposed air valve structure with a rotary test bench, reducing the overall test structure size by approximately half, and having a simple structure and flexible testing.

Description

Technical Field

[0001] The present invention relates to the technical field of wind load fatigue test devices for electrical equipment, and more specifically, to a pneumatic load anti-fatigue performance test and inspection device for electromechanical equipment in tunnels. Background Art

[0002] With the rapid development of high-speed railways in China and the large-scale speed increase of ordinary railways, the periodic train wind load in tunnels is also increasing. The potential safety hazards of equipment and facilities in tunnels under the action of train wind are gradually emerging, especially the exposed equipment and facilities protruding from the side walls of tunnel linings, such as electrical control boxes, lighting fixtures, evacuation indicator lights, etc. Moreover, the equipment and facilities in double-track tunnels are subjected to bidirectional fatigue wind loads, which is the most dangerous working state. Therefore, in order to fully verify the anti-fatigue wind load capacity of equipment and facilities in tunnels, it is necessary to design a special fatigue testing machine to simulate and inspect such equipment and facilities.

[0003] Currently, the existing fatigue testing machines and their disadvantages are as follows: 1. Pneumatic mechanical fatigue testing machines use mechanical contact, which is prone to stress concentration and is not close to the actual working conditions; 2. Opposite full-pressure electric air valve fatigue testing machines have too many electric actuators, high failure rates, and the actuators meeting the requirements of the corresponding test cycle need to be specifically developed, with a long cycle; 3. Opposite full-pressure connecting rod control fatigue testing machines have many connecting rod mechanisms, large maintenance workload, and poor anti-fatigue performance of the air valve structure itself; 3. Opposite full-pressure baffle-type fatigue testing machines use a sliding baffle structure, and baffle lubrication is a maintenance difficulty, and at the same time, the sealing performance between the baffle and the test air valve needs to be further optimized. And the above-mentioned opposite fatigue testing machines generally use a bilateral opposite air valve structure, which not only increases the overall structural size of the testing machine and occupies a large area, but also in order to achieve periodic wind load tests on both sides of the equipment, the air valve needs to be frequently opened and closed during the test, increasing the risk of air valve damage.

[0004] Therefore, how to provide a pneumatic load anti-fatigue performance test and inspection device for electromechanical equipment in tunnels with a simple structure, flexible testing, and no need for frequent opening and closing of air valves is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a pneumatic load anti-fatigue performance test and inspection device for electromechanical equipment in tunnels with a simple structure, flexible testing, and no need for frequent opening and closing of air valves.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A pneumatic load anti-fatigue performance test and inspection device for electromechanical equipment in tunnels, comprising:

[0008] An anechoic chamber is provided with a rotary test bench for placing a test piece to be measured. Air intake ports are provided on two opposite side surfaces of the rotary test bench, and wind pressure sensors and displacement sensors are provided on two opposite side surfaces of the test piece to be measured.

[0009] An air storage tank is located on one side of the anechoic chamber. The air storage tank is communicated with the anechoic chamber through a manual air valve fixed on one side wall of the air storage tank. The air outlet of the manual air valve is arranged corresponding to the air intake port.

[0010] An axial flow fan is arranged at the top of the air storage tank, and the air outlet of the axial flow fan is communicated with the inside of the air storage tank.

[0011] A control console is electrically connected to the rotary test bench and the axial flow fan. The displacement sensor and the wind pressure sensor are wirelessly connected to the control console.

[0012] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a pneumatic load anti-fatigue performance test and inspection device for electromechanical equipment in a tunnel. During the test, the test piece to be measured is placed on the rotary test bench. The control console controls the axial flow fan and the rotary test bench to work. The air generated by the axial flow fan enters the air storage tank and then blows out through the air outlet of the manual air valve. At this time, the rotary test bench rotates at a certain frequency. When one side of the air intake port faces the air outlet of the manual air valve, one side surface of the test piece to be measured is subjected to a wind load. When the other side of the air intake port faces the air outlet of the manual air valve, the other side surface of the test piece to be measured is subjected to a wind load. The wind pressure sensor and the displacement sensor can send the detected parameters to the control console, facilitating the staff to observe the displacement deformation amount of the test piece to be measured under the action of the wind pressure and calculate its anti-fatigue degree according to its deformation situation. During this process, the control console automatically controls the adjustment of the rotation speed of the axial flow fan according to the wind pressure value acting on the surface of the test piece to be measured. Therefore, this device uses a rotary test bench to replace the traditional double-sided opposed air valve structure, shortening the overall test structure size by about half. At the same time, a manual air valve is adopted, which does not need to be frequently opened and closed, has a simple structure and few vulnerable parts. In addition, this device only needs to control the axial flow fan and the rotary test bench, the control system is simple and reliable, and the wind receiving time of different sides can be adjusted by the rotation speed of the rotary test bench, and the test is flexible.

[0013] Further, the rotary test bench includes:

[0014] A frame, which is placed in the anechoic chamber;

[0015] A rotary driving device, which is fixed at the bottom of the frame and is electrically connected to the control console;

[0016] Vertical rotating box, the bottom end of the vertical rotating box is fixedly connected to the rotary support of the rotary drive device, the top end of the vertical rotating box is rotatably connected to the top of the frame, and air intake openings are respectively formed on two opposite side walls of the vertical rotating box and arranged along the length direction of the vertical rotating box.

[0017] The beneficial effect of adopting the above technical solution is that the rotary drive device drives the vertical rotating box to rotate at a certain frequency, realizing the alternate air intake tests on two sides of the test piece.

[0018] Further, a pin shaft is fixed at the top end of the vertical rotating box, a pin shaft hole is formed at the top of the frame, and the pin shaft passes through the pin shaft hole.

[0019] Further, a plurality of partitions for placing test pieces are fixedly arranged at intervals up and down in the vertical rotating box.

[0020] The beneficial effect of adopting the above technical solution is that multiple test pieces can be placed and tested simultaneously, greatly improving the test efficiency.

[0021] Further, the vertical rotating box is cylindrical, a plurality of manual air valves are arranged side by side, an arc-shaped air guide cover adapted to the shape of the box wall of the vertical rotating box is fixedly connected to the air outlet of the manual air valve, and the arc-shaped air guide cover covers the outer wall of the vertical rotating box for guiding the air from the manual air valve to the air intake opening.

[0022] The beneficial effect of adopting the above technical solution is that most of the air from the manual air valve can be blown towards the air intake opening, avoiding the loss of test air.

[0023] Further, a sound-absorbing material layer is pasted on the inner side surface of the arc-shaped air guide cover.

[0024] The beneficial effect of adopting the above technical solution is that the noise can be reduced.

[0025] Further, a camera electrically connected to the console is provided in the soundproof chamber.

[0026] The beneficial effect of adopting the above technical solution is that it is convenient for the staff to observe the usage conditions of each component in real time through the console.

[0027] Further, it further includes a screw air compressor electrically connected to the console, and the screw air compressor is connected to the air storage tank through a high-pressure gas cylinder and a pressure reducing valve.

[0028] The beneficial effect of adopting the above technical solution is that the screw air compressor is used to stabilize the pressure in the air storage tank and reduce the pressure fluctuation amplitude during the test process.

[0029] Furthermore, access doors are provided on three sides of the anechoic chamber, and a maintenance door is provided on one side of the gas storage tank.

[0030] The beneficial effects of adopting the above technical solution are that it is convenient for staff to enter and exit the anechoic chamber and the gas storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0032] Figure 1 The attached drawings are the structural schematic diagrams of a pneumatic load anti-fatigue performance test inspection device for electromechanical equipment in a tunnel provided by the present invention.

[0033] Figure 2 The attached drawings are Figure 1 the three-dimensional structural schematic diagrams of

[0034] Figure 3 The attached drawings are Figure 2 the schematic diagrams of the first perspective of the disassembled structure.

[0035] Figure 4 The attached drawings are Figure 2 the schematic diagrams of the second perspective of the disassembled structure.

[0036] Figure 5 The attached drawings are the structural schematic diagrams of the first perspective of the rotary test bench.

[0037] Figure 6 The attached drawings are the structural schematic diagrams of the second perspective of the rotary test bench.

[0038] Figure 7 The attached drawings are the structural schematic diagrams of the vertical rotary box.

[0039] Figure 8 The attached drawings are the assembly structural schematic diagrams of the manual air valve and the arc-shaped air guide cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0041] See Figures 1-8, an embodiment of the present invention discloses a pneumatic load anti-fatigue performance test and inspection device for electromechanical equipment in a tunnel, including:

[0042] An anechoic chamber 1, in which a rotary test bench 2 for placing a test piece 100 is provided. Air intake ports 201 are provided on two opposite side surfaces of the rotary test bench 2; Wind pressure sensors 200 and displacement sensors 300 are provided on two opposite side surfaces of the test piece 100;

[0043] An air storage tank 3, which is located on one side of the anechoic chamber 1. The air storage tank 3 is communicated with the anechoic chamber 1 through a manual air valve 4 fixed on one side wall of the air storage tank 3. The air outlet of the manual air valve 4 is arranged corresponding to the air intake port 201;

[0044] An axial flow fan 5, which is arranged on the top of the air storage tank 3, and the air outlet of the axial flow fan 5 is communicated with the inside of the air storage tank 3;

[0045] A console 6, which is electrically connected to the rotary test bench 2 and the axial flow fan 5. The displacement sensor 300 and the wind pressure sensor 200 are both wirelessly connected to the console 6.

[0046] The rotary test bench 2 includes:

[0047] A frame 21, which is placed in the anechoic chamber 1;

[0048] A rotary drive device 22, which is fixed at the bottom of the frame 21 and is electrically connected to the console 6;

[0049] A vertical rotary box 23, the bottom end of which is fixedly connected to the rotary support of the rotary drive device 22, the top end of which is rotatably connected to the top of the frame 21. Air intake ports 201 are respectively opened on two opposite side walls of the vertical rotary box 23 and are arranged along the length direction of the vertical rotary box 23.

[0050] A pin shaft 231 is fixed at the top end of the vertical rotary box 23, and a pin hole 211 is opened at the top of the frame 21. The pin shaft 231 passes through the pin hole 211.

[0051] A plurality of partitions 24 for placing the test piece 100 are fixedly arranged at intervals up and down in the vertical rotary box 23.

[0052] The vertical rotary box 23 is cylindrical. The manual air valves 4 are arranged in parallel. An arc-shaped air guide cover 7, which is adapted to the shape of the box wall of the vertical rotary box 23, is fixedly connected to the air outlet of the manual air valve 4. The arc-shaped air guide cover 7 covers the outer wall of the vertical rotary box 23 and is used to guide the air from the manual air valve 4 to the air intake port 201.

[0053] A sound-absorbing material layer 71 is attached to the inner side surface of the arc-shaped air guide cover 7.

[0054] Inside the anechoic chamber 1, there is a camera 8 electrically connected to the console 6.

[0055] The pneumatic load anti-fatigue performance test inspection device for the electromechanical equipment in the tunnel further includes a screw air compressor 9 electrically connected to the console 6. The screw air compressor 9 is connected to the air storage tank 3 through a high-pressure gas cylinder 10 and a pressure reducing valve 11.

[0056] There are access doors 12 on three sides of the anechoic chamber 1, and there is a maintenance door 13 on one side of the air storage tank 3.

[0057] During the test, the test piece to be measured is placed on the rotary test bench. The axial flow fan is turned on to pressurize the air storage tank, and the screw air compressor is set to the automatic position. The screw air compressor will automatically start and stop according to the pressure value in the air storage tank. The air in the air storage tank is blown out through the air outlet of the manual air valve. At this time, the rotary test bench rotates at a certain frequency. When the air inlet on one side faces the air outlet of the manual air valve, one side of the test piece is subjected to wind load. When the air inlet on the other side faces the air outlet of the manual air valve, the other side of the test piece is subjected to wind load. The wind pressure sensor and the displacement sensor can send the detected parameters to the console, facilitating the staff to observe the displacement deformation of the test piece under the action of wind pressure, and calculating its anti-fatigue degree according to its deformation situation. During this process, the console automatically controls the adjustment of the rotation speed of the axial flow fan according to the wind pressure value acting on the surface of the test piece.

[0058] Therefore, this device uses a rotary test bench to replace the traditional double-sided opposed air valve structure, shortening the overall test structure size by about half. At the same time, it uses a manual air valve, which does not need to be opened and closed frequently, has a simple structure and few vulnerable parts. In addition, this device only needs to control the axial flow fan and the rotary test bench, and the control system is simple and reliable. Moreover, the wind receiving time of different sides can be adjusted by the rotation speed of the rotary test bench, and the test is flexible.

[0059] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the related parts, please refer to the description in the method part.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An experimental inspection device for the anti-fatigue performance of pneumatic loads of electromechanical equipment in a tunnel, characterized in that, it includes: An anechoic chamber (1), in which a rotary test bench (2) for placing a test piece (100) is provided. Air intake ports (201) are provided on two opposite side surfaces of the rotary test bench (2); Wind pressure sensors (200) and displacement sensors (300) are provided on two opposite side surfaces of the test piece (100); An air storage tank (3), the air storage tank (3) is located on one side of the anechoic chamber (1), and the air storage tank (3) is communicated with the anechoic chamber (1) through a manual air valve (4) fixed on one side wall of the air storage tank (3), and the air outlet of the manual air valve (4) is arranged corresponding to the air intake port (201); An axial flow fan (5), the axial flow fan (5) is arranged at the top of the air storage tank (3), and the air outlet of the axial flow fan (5) is communicated with the inside of the air storage tank (3); A console (6), the console (6) is electrically connected to the rotary test bench (2) and the axial flow fan (5), and the displacement sensor (300) and the wind pressure sensor (200) are wirelessly connected to the console (6); The rotary test bench (2) includes: A frame (21), the frame (21) is placed in the anechoic chamber (1); A rotary drive device (22), the rotary drive device (22) is fixed at the bottom of the frame (21), and the rotary drive device (22) is electrically connected to the console (6); A vertical rotary box (23), the bottom end of the vertical rotary box (23) is fixedly connected to the rotary support of the rotary drive device (22), the top end of the vertical rotary box (23) is rotatably connected to the top of the frame (21), and the air intake ports (201) arranged along the length direction of the vertical rotary box (23) are respectively opened on two opposite side walls of the vertical rotary box (23); A plurality of partitions (24) for placing the test piece (100) are fixedly arranged at intervals up and down in the vertical rotary box (23); The vertical rotary box (23) is cylindrical, and a plurality of the manual air valves (4) are arranged side by side. An arc-shaped air guide cover (7) adapted to the shape of the box wall of the vertical rotary box (23) is fixedly connected to the air outlet of the manual air valve (4), and the arc-shaped air guide cover (7) covers the outer wall of the vertical rotary box (23) for guiding the air from the manual air valve (4) to the air intake port (201).

2. The experimental inspection device for the anti-fatigue performance of pneumatic loads of electromechanical equipment in a tunnel according to claim 1, characterized in that, A pin shaft (231) is fixed at the top end of the vertical rotary box (23), a pin shaft hole (211) is opened at the top of the frame (21), and the pin shaft (231) is inserted into the pin shaft hole (211).

3. The experimental inspection device for the anti-fatigue performance of pneumatic loads of electromechanical equipment in a tunnel according to claim 1, characterized in that, A sound-absorbing material layer (71) is pasted on the inner side surface of the arc-shaped air guide cover (7).

4. An experimental inspection device for the anti-fatigue performance of pneumatic loads of electromechanical equipment in a tunnel according to claim 1, characterized in that, a camera (8) electrically connected to the console (6) is provided in the anechoic chamber (1).

5. An experimental inspection device for the anti-fatigue performance of pneumatic loads of electromechanical equipment in a tunnel according to claim 1, characterized in that, it further includes a screw air compressor (9) electrically connected to the console (6), and the screw air compressor (9) is connected to the air storage tank (3) through a high-pressure gas cylinder (10) and a pressure reducing valve (11).

6. An experimental inspection device for the anti-fatigue performance of pneumatic loads of electromechanical equipment in a tunnel according to claim 1, characterized in that, access doors (12) are provided on three sides of the anechoic chamber (1), and a maintenance door (13) is provided on one side of the air storage tank (3).

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