A flexible DC converter valve sub-module test tooling

Abstract

The present invention discloses a flexible DC converter valve sub-module test tooling, which relates to the technical field of mechanical manufacturing. This flexible DC converter valve sub-module test tooling includes a fixed frame. At the bottom of the inner wall of the fixed frame, an elastic bladder is fixedly installed. At the upper end of the elastic bladder, an air blowing pipe is fixedly inserted. A vibration mechanism is arranged inside the fixed frame, and a fixing mechanism is arranged at the upper end of the vibration mechanism. The vibration mechanism includes an arc-shaped elastic plate, a fixing plate, an elastic member and a motor. The arc-shaped elastic plate is fixedly installed at the bottom of the inner wall of the fixed frame, the fixing plate is fixedly installed at the upper end of the arc-shaped elastic plate, and the elastic member is arranged at the bottom of the fixing plate. This flexible DC converter valve sub-module test tooling is provided with a vibration mechanism and a fixing mechanism. During the vibration process, the flexible DC converter valve sub-module is fixed inside the device, preventing the flexible DC converter valve sub-module from shaking during the test and affecting the test results.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, and in particular to a flexible direct current converter valve submodule test tool. Background Art

[0002] With the advancement and development of power electronics technology, flexible DC transmission will show its unique advantages in solving many problems faced by long-distance, large-capacity transmission, access to new energy distributed power sources, and ultra-large AC / DC hybrid power grids. As a new generation of DC transmission technology, flexible DC transmission provides an effective solution for the transformation of power grid transmission methods and the construction of future power grids.

[0003] After the flexible DC converter valve is manufactured, it is required to use a test fixture to inspect its quality. During the vibration test, the flexible DC converter valve is prone to shaking on the inside of the test fixture, which affects the vibration test results of the flexible DC converter valve and even causes the flexible DC converter valve to slip and be damaged. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a flexible DC converter valve submodule test tooling, which uses a vibration mechanism to cooperate with a fixing mechanism to fix the flexible DC converter valve submodule on the inner side of the device during the vibration process, thereby preventing the flexible DC converter valve submodule from shaking during the test and affecting the test results.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a flexible DC converter valve submodule test tool, including a fixed frame, an elastic bag is fixedly installed on the bottom of the inner wall of the fixed frame, an air blowing pipe is fixedly inserted at the upper end of the elastic bag, a vibration mechanism is arranged on the inner side of the fixed frame, and a fixing mechanism is arranged on the upper end of the vibration mechanism.

[0006] Preferably, the vibration mechanism includes an arc-shaped elastic plate, a fixed plate, an elastic member and a motor, the arc-shaped elastic plate is fixedly mounted on the bottom of the inner wall of the fixed frame, the fixed plate is fixedly mounted on the upper end of the arc-shaped elastic plate, the elastic member is arranged at the bottom of the fixed plate, the motor is fixedly mounted at the bottom center of the fixed plate, and the output shaft of the motor is fixedly mounted with an eccentric wheel.

[0007] Preferably, the elastic part includes a spiral spring, an elastic strip, a counterweight and a wind shield groove, the spiral spring is fixedly mounted on the bottom of the fixed plate, the lower end of the spiral spring is connected to the bottom of the inner wall of the fixed frame, the elastic strip is fixedly mounted on the inner side of the spiral spring, the counterweight is fixedly mounted on one end of the elastic strip close to the inner center of the spiral spring, and the wind shield groove is opened on the outer surface of the counterweight.

[0008] Preferably, the fixing mechanism includes a fixing threaded cylinder, a bolt, a fixing strip and a resistance member. The fixing threaded cylinder is fixedly installed on the top of the fixing plate. The bolt is fixedly connected to the fixing plate through a spring. The bolt is threadedly connected to the fixing threaded cylinder. The fixing strip is movably installed at the upper end of the bolt. The fixing strip is rotatably connected to the upper end of the bolt through a rotating ring. The resistance member is arranged at the upper end of the fixing plate.

[0009] Preferably, the resistance member includes a movable groove, a return strip, a corrugated flexible plate and a movable member. The movable groove is opened on the top of the fixing plate. The return strip is fixedly installed on one side of the movable groove away from the center of the top of the fixing plate. The corrugated flexible plate is movably installed on the top of the fixing plate. The corrugated flexible plate is connected to the return strip. The movable member is arranged at the lower end of the corrugated flexible plate.

[0010] Preferably, the movable member includes a strip-shaped opening and a rubber block. The strip-shaped opening is opened on the outer surface of the corrugated flexible plate. The rubber block is fixedly installed on the top of the fixing plate. The upper end of the rubber block penetrates through the strip-shaped opening.

[0011] The present invention provides a flexible DC converter valve sub-module test tooling, which has the following beneficial effects:

[0012] (1) For this flexible DC converter valve sub-module test tooling, a vibration mechanism is provided in cooperation with a fixing mechanism. During the vibration process, the flexible DC converter valve sub-module is fixed inside the device, preventing the flexible DC converter valve sub-module from shaking during the test and affecting the test results.

[0013] (2) For this flexible DC converter valve sub-module test tooling, when the fixing plate vibrates, the arc-shaped elastic plate and the elastic bladder deform. When the elastic bladder deforms, it drives the air inside the fixing frame to flow. When the air flow contacts the flexible DC converter valve sub-module, it quickly drives the heat on its surface outward, avoiding the surface temperature of the flexible DC converter valve sub-module being too high during the test and damaging the test instrument.

[0014] (3) For this flexible DC converter valve sub-module test tooling, when the fixing plate moves, the spiral spring at the bottom deforms. At this time, the counterweight in the spiral spring causes the movement amplitude of the spiral spring to increase, further improving the simulated vibration effect of the test tooling.

[0015] (4) For this flexible DC converter valve sub-module test tooling, when the fixing plate moves, the air at the lower end of the fixing plate continuously flows. The wind shield grooves on the surface of the counterweight are affected by the air flow and continuously swing inside the spiral spring, making the vibration at the fixing plate more disordered and enhancing the simulated vibration effect of the test tooling.

[0016] (5) For the test tooling of the flexible DC converter valve sub-module, when the fixed plate vibrates, the center of gravity of the flexible DC converter valve sub-module shifts. At this time, the corrugated flexible plate is squeezed, and the rubber block at the lower end of the corrugated flexible plate extends out from the strip-shaped opening and contacts the surface of the flexible DC converter valve sub-module, increasing the friction force with the corrugated flexible plate and preventing the flexible DC converter valve sub-module from sliding at the upper end of the corrugated flexible plate, thus affecting the vibration test of the flexible DC converter valve sub-module in progress. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the fixing frame of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure at the elastic member of the present invention;

[0020] Figure 4 It is a sectional view of the fixing plate of the present invention;

[0021] Figure 5 For the present invention Figure 4 The enlarged view of the structure at position A in the present invention.

[0022] In the figure: 1. Fixing frame; 2. Elastic capsule; 3. Blowing pipe; 4. Vibration mechanism; 41. Arc-shaped elastic plate; 42. Fixing plate; 43. Elastic member; 431. Spiral spring; 432. Elastic strip; 433. Counterweight; 434. Windshield groove; 44. Motor; 5. Fixing mechanism; 51. Fixing threaded cylinder; 52. Bolt; 53. Fixing strip; 54. Resistance member; 541. Activity groove; 542. Return strip; 543. Corrugated flexible plate; 544. Movable member; 5441. Strip-shaped opening; 5442. Rubber block. Detailed Description of the Preferred Embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying 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 the embodiments.

[0024] The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0025] Please refer to Figures 1-5, the present invention provides a technical solution: a flexible DC converter valve sub-module test tooling, including a fixed frame 1, an elastic bladder 2 is fixedly installed at the bottom of the inner wall of the fixed frame 1, an air blowing pipe 3 is fixedly inserted at the upper end of the elastic bladder 2, a vibration mechanism 4 is arranged inside the fixed frame 1, and a fixing mechanism 5 is arranged at the upper end of the vibration mechanism 4.

[0026] The vibration mechanism 4 includes an arc-shaped elastic plate 41, a fixing plate 42, an elastic member 43 and a motor 44. The arc-shaped elastic plate 41 is fixedly installed at the bottom of the inner wall of the fixed frame 1, the fixing plate 42 is fixedly installed at the upper end of the arc-shaped elastic plate 41, the elastic member 43 is arranged at the bottom of the fixing plate 42. The elastic member 43 includes a spiral spring 431, an elastic strip 432, a counterweight 433 and a wind shield groove 434. The spiral spring 431 is fixedly installed at the bottom of the fixing plate 42, the lower end of the spiral spring 431 is connected to the bottom of the inner wall of the fixed frame 1, the elastic strip 432 is fixedly installed inside the spiral spring 431, the counterweight 433 is fixedly installed at one end of the elastic strip 432 close to the center of the inner side of the spiral spring 431, and the wind shield groove 434 is opened on the outer surface of the counterweight 433. When the fixing plate 42 moves, the air at the lower end of the fixing plate 42 continuously flows. Affected by the air flow, the wind shield groove 434 on the surface of the counterweight 433 continuously swings inside the spiral spring 431, making the vibration at the fixing plate 42 more disordered and enhancing the simulated vibration effect of the test tooling. The motor 44 is fixedly installed at the center of the bottom of the fixing plate 42, and an eccentric wheel is fixedly installed on the output shaft of the motor 44.

[0027] The fixing mechanism 5 includes a fixed threaded cylinder 51, a bolt 52, a fixing strip 53 and a resistance member 54. The fixed threaded cylinder 51 is fixedly installed at the top of the fixing plate 42, the bolt 52 is fixedly connected to the fixing plate 42 through a spring, the bolt 52 is threadedly connected to the fixed threaded cylinder 51, the fixing strip 53 is movably installed at the upper end of the bolt 52, and the fixing strip 53 is rotatably connected to the upper end of the bolt 52 through a rotating ring. The resistance member 54 is arranged at the upper end of the fixing plate 42. The resistance member 54 includes a movable groove 541, a return strip 542, a corrugated soft plate 543 and a movable member 544. The movable groove 541 is opened at the top of the fixing plate 42, the return strip 542 is fixedly installed on one side of the movable groove 541 away from the center of the top of the fixing plate 42, the corrugated soft plate 543 is movably installed at the top of the fixing plate 42, the corrugated soft plate 543 is connected to the return strip 542, and the movable member 544 is arranged at the lower end of the corrugated soft plate 543. The movable member 544 includes a strip-shaped opening 5441 and a rubber block 5442. The strip-shaped opening 5441 is opened on the outer surface of the corrugated soft plate 543, and the rubber block 5442 is fixedly installed at the top of the fixing plate 42, and the upper end of the rubber block 5442 penetrates through the strip-shaped opening 5441.

[0028] In use, place the flexible DC converter valve sub-module on the top of the corrugated flexible plate 543, adjust the position of the adjusting bolt 52 at the upper end of the fixed threaded cylinder 51, so that the fixed strip 53 is tightly attached to the top of the flexible DC converter valve sub-module, thereby fixing it on the top of the corrugated flexible plate 543. After the flexible DC converter valve sub-module is fixed, turn on the switch of the motor 44. The motor 44 drives the fixed plate 42 to vibrate under the cooperation of the eccentric wheel on its output shaft, so as to perform vibration detection on the flexible DC converter valve sub-module. When the fixed plate 42 vibrates, the arc-shaped elastic plate 41 and the elastic bladder 2 deform. When the elastic bladder 2 deforms, it drives the air inside the fixed frame 1 to flow. When the air flow contacts the flexible DC converter valve sub-module, it quickly takes the heat on its surface outward, avoiding the surface temperature of the flexible DC converter valve sub-module being too high during the test and damaging the test instrument. When the fixed plate 42 moves, the spiral spring 431 at the bottom deforms. At this time, the counterweight 433 promotes the increase in the movement amplitude of the spiral spring 431 inside the spiral spring 431, further improving the simulated vibration effect of the test tooling. And when the fixed plate 42 moves, the air at the lower end of the fixed plate 42 continuously flows. The wind deflector groove 434 on the surface of the counterweight 433 is affected by the air flow and continuously swings inside the spiral spring 431, prompting the vibration at the fixed plate 42 to be more disordered, enhancing the simulated vibration effect of the test tooling. When the fixed plate 42 vibrates, the center of gravity of the flexible DC converter valve sub-module shifts. At this time, the corrugated flexible plate 543 is squeezed, and the rubber block 5442 at the lower end of the corrugated flexible plate 543 extends out from the strip-shaped opening 5441 and contacts the surface of the flexible DC converter valve sub-module, increasing the friction with the corrugated flexible plate 543 and preventing the flexible DC converter valve sub-module from sliding on the upper end of the corrugated flexible plate 543, affecting the vibration test of the flexible DC converter valve sub-module in progress.

[0029] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A flexible DC converter valve sub-module test tooling, comprising a fixed frame (1), characterized in that: At the bottom of the inner wall of the fixed frame (1), an elastic bladder (2) is fixedly installed. At the upper end of the elastic bladder (2), an air blowing pipe (3) is fixedly inserted. Inside the fixed frame (1), a vibration mechanism (4) is arranged, and at the upper end of the vibration mechanism (4), a fixing mechanism (5) is arranged; The vibration mechanism (4) includes an arc-shaped elastic plate (41), a fixing plate (42), an elastic member (43) and a motor (44). The arc-shaped elastic plate (41) is fixedly installed at the bottom of the inner wall of the fixed frame (1). The fixing plate (42) is fixedly installed at the upper end of the arc-shaped elastic plate (41). The elastic member (43) is arranged at the bottom of the fixing plate (42). The motor (44) is fixedly installed at the center of the bottom of the fixing plate (42). An eccentric wheel is fixedly installed on the output shaft of the motor (44); The elastic member (43) includes a spiral spring (431), an elastic strip (432), a counterweight (433) and a wind shielding groove (434). The spiral spring (431) is fixedly installed at the bottom of the fixing plate (42). The lower end of the spiral spring (431) is connected to the bottom of the inner wall of the fixed frame (1). The elastic strip (432) is fixedly installed inside the spiral spring (431). The counterweight (433) is fixedly installed at one end of the elastic strip (432) close to the center of the inner side of the spiral spring (431). The wind shielding groove (434) is formed on the outer surface of the counterweight (433).

2. The test tooling for a flexible DC converter valve sub-module according to claim 1, characterized in that: The fixing mechanism (5) includes a fixed threaded cylinder (51), a bolt (52), a fixing strip (53) and a resistance member (54). The fixed threaded cylinder (51) is fixedly installed at the top of the fixing plate (42). The bolt (52) is fixedly connected to the fixing plate (42) through a spring. The bolt (52) is in threaded connection with the fixed threaded cylinder (51). The fixing strip (53) is movably installed at the upper end of the bolt (52). The fixing strip (53) is rotationally connected to the upper end of the bolt (52) through a rotating ring. The resistance member (54) is arranged at the upper end of the fixing plate (42).

3. The test tooling for a flexible DC converter valve sub-module according to claim 2, characterized in that: The resistance member (54) includes a movable groove (541), a return strip (542), a corrugated flexible plate (543) and a movable member (544). The movable groove (541) is formed at the top of the fixing plate (42). The return strip (542) is fixedly installed on one side of the movable groove (541) away from the center of the top of the fixing plate (42). The corrugated flexible plate (543) is movably installed at the top of the fixing plate (42). The corrugated flexible plate (543) is connected to the return strip (542). The movable member (544) is arranged at the lower end of the corrugated flexible plate (543).

4. The test tooling for a flexible DC converter valve sub-module according to claim 3, characterized in that: The movable member (544) includes a strip-shaped opening (5441) and a rubber block (5442). The strip-shaped opening (5441) is formed on the outer surface of the corrugated flexible plate (543). The rubber block (5442) is fixedly installed at the top of the fixing plate (42). The upper end of the rubber block (5442) penetrates through the strip-shaped opening (5441).

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