A PCS modular three-level inverter module installation structure

Abstract

The present invention discloses an installation structure for a PCS modular three-level inverter module, which relates to the technical field of PCS modular three-level inverter modules. It includes a main body mechanism, and the main body mechanism includes a module body. One side of the module body is in close contact with a T-shaped frame. One side of the T-shaped frame is fixedly connected to a bottom plate, the top of the bottom plate is in contact with the bottom of the module body, and a positioning mechanism is arranged inside the bottom plate. The positioning mechanism is used for pre-positioning the module body. A holding frame is fixedly connected to the top of the T-shaped frame. With this installation structure for the PCS modular three-level inverter module, through the combined use of the positioning mechanism, the loosening monitoring mechanism and the leakage monitoring mechanism, the high-efficiency of the installation structure for the PCS modular three-level inverter module is realized, and the loosening of the installation structure and the leakage of the PCS modular three-level inverter module are monitored in a timely manner, thereby improving the timely troubleshooting rate of the faults after the installation of the PCS modular three-level inverter module.

Description

Technical Field

[0001] The present invention relates to the technical field of PCS modular three-level inverter modules, and in particular to a PCS modular three-level inverter module installation structure. Background Art

[0002] The PCS modular three-level inverter module is an advanced form of energy storage converter. It combines modular design and three-level inverter technology to achieve efficient and stable energy conversion between the energy storage system and the power grid. When installing the PCS modular three-level inverter module, the PCS modular three-level inverter module is usually installed at the positioning point by means of brackets and bolts. However, after installation, the bracket is easily loosened between the bracket and the positioning point due to reasons such as loose installation and equipment vibration, so that the PCS modular three-level inverter module tilts or even falls, which makes it difficult to monitor the looseness of the bracket in a timely manner. In addition, the PCS modular three-level inverter module is prone to leakage due to problems such as insulation aging and excessive environmental humidity. The maintenance personnel cannot find the leakage in time during maintenance, which easily causes electric shock accidents. Therefore, it is not convenient to monitor the looseness of the installation structure and the leakage of the PCS modular three-level inverter module in a timely manner, which reduces the timely elimination rate of faults after the installation of the PCS modular three-level inverter module.

[0003] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing PCS modular three-level inverter module installation structure on the market, and even if it can be solved, it needs to be solved through external tools, which cannot achieve the desired effect. Therefore, we propose a PCS modular three-level inverter module installation structure. Summary of the invention

[0004] The object of the present invention is to provide a PCS modular three-level inverter module installation structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PCS modular three-level inverter module installation structure, comprising a main body mechanism, the main body mechanism comprising a module body, one side of the module body is in close contact with a T-shaped frame, one side of the T-shaped frame is fixedly connected with a bottom plate, the top of the bottom plate is in contact with the bottom of the module body, a positioning mechanism is arranged inside the bottom plate, the positioning mechanism is used to pre-position the module body, the top of the T-shaped frame is fixedly connected with a holding frame, the top of the holding frame is provided with two card slots, the surface of the holding frame is provided with two positioning blocks, the positioning blocks are tightly fitted with the holding frame through the card slots, the two positioning blocks are respectively fixedly connected to the two sides of the module body by welding, and the positioning blocks are fixed to the holding frame by bolts;

[0006] A loosening monitoring mechanism is arranged inside the holding frame, and the loosening monitoring mechanism is used to monitor the loosening after the holding frame and the T-shaped frame are installed;

[0007] A leakage monitoring mechanism is arranged on one side of the bottom plate, and the leakage monitoring mechanism is used to monitor the leakage condition of the module body.

[0008] Preferably, the positioning mechanism includes a rotating groove, the rotating groove is opened at the bottom of the bottom plate, the inner wall of the rotating groove is rotatably connected with a rotating rod through a bearing, two first positioning plates are slidably connected to the top of the bottom plate, the two first positioning plates are arranged oppositely, a second positioning plate is slidably connected to the top of the bottom plate, the second positioning plate is located between the two first positioning plates, a plurality of guide blocks are fixedly connected to the bottoms of the first positioning plate and the second positioning plate, guide holes matched with the guide blocks are opened at the top of the bottom plate, the surface of the guide block is in contact with the inner cavity of the guide hole, a first tension spring is fixedly connected to the inner side of the guide hole, one end of the first tension spring is fixedly connected to one side of the guide block, a steel wire rope is fixedly connected to the other side of the guide block, the steel wire rope is slidably connected to the inner wall of the bottom plate, one end of the steel wire rope penetrates into the inner cavity of the rotating groove and is fixedly connected to the surface of the rotating rod, a turning knob is fixedly connected to the bottom end of the rotating rod, a positioning ring groove is opened at the bottom of the bottom plate, and the turning knob and the bottom plate are limited by embedding a bolt into the inner cavity of the positioning ring groove.

[0009] Preferably, a welding groove is opened on the side surface of the positioning block, and a welding hole is opened on one side of the positioning block. The welding groove and the welding hole are used to increase the welding surface.

[0010] Preferably, a guide groove is opened on the inner side of the guide hole, and guide plates are fixedly connected to both sides of the guide block. The surface of the guide plate is in contact with the inner cavity of the guide groove.

[0011] Preferably, the loosening monitoring mechanism includes a receiving block fixedly connected to the bottom of the holding frame. An operation groove is formed in the inner wall of the receiving block. A baffle is rotatably connected to the inner cavity of the operation groove. The operation groove is divided into a first groove and a second groove by the baffle. A gravity ball is placed in the inner cavity of the first groove. A pressure sensor is fixedly connected to the inner side of the second groove. The gravity ball and the pressure sensor are used in cooperation. The pressure sensor is electrically connected to an external alarm device. A sliding groove is formed in the bottom of the holding frame. A moving plate is slidably connected to the inner cavity of the sliding groove. A top rod is fixedly connected to the top of the moving plate. A limiting hole is formed in the inner wall of the holding frame. The surface of the top rod contacts the inner cavity of the limiting hole. A first spring is fixedly connected to the inner side of the first groove. One end of the first spring is fixedly connected to a pushing cone. The inner wall of the pushing cone contacts the surface of the gravity ball. A blocking rod is slidably connected to the inner wall of the pushing cone. The bottom end of the blocking rod penetrates into the inner cavity of the limiting hole. The blocking rod and the top rod are used in cooperation. A first inclined block is fixedly connected to the top of the moving plate. A moving hole is formed in one side of the receiving block. A second inclined block is slidably connected to the inner wall of the moving hole. The inclined surfaces of the first inclined block and the second inclined block are used in cooperation. Two guide posts are fixedly connected to the inner wall of the moving hole. The two guide posts are symmetrically arranged at the top and bottom of the second inclined block. The inner wall of the second inclined block contacts the surface of the guide posts. Two third tension springs are fixedly connected to the inner wall of the moving hole. One end of each third tension spring is fixedly connected to one side of the second inclined block. The third tension springs are slidably sleeved on the surfaces of the guide posts.

[0012] Preferably, two moving grooves are formed in the inner side of the sliding groove. The two moving grooves are arranged oppositely. A guide rod is fixedly connected to the inner wall of each moving groove. A second tension spring is slidably sleeved on the surface of each guide rod. The top end of each second tension spring is fixedly connected to the inner top of the corresponding moving groove. The bottom end of each second tension spring is fixedly connected to a moving block. The inner wall of each moving block contacts the surface of the corresponding guide rod. The opposite sides of the two moving blocks are respectively fixedly connected to the two sides of the moving plate.

[0013] Preferably, a limiting ring is fixedly connected to the inner wall of the limiting hole. The inner cavity of the limiting ring contacts the surface of the blocking rod. A top post is fixedly connected to the top of the top rod. The top of the top post contacts the bottom of the blocking rod.

[0014] Preferably, a positioning ring is fixedly connected to the surface of the pushing cone. A second spring is fixedly connected to the surface of the blocking rod. The top end of the second spring is fixedly connected to the bottom of the positioning ring.

[0015] Preferably, a rotating shaft is rotatably connected to the inner wall of the receiving block. The surface of the rotating shaft is fixedly connected to the inner wall of the baffle. A torsion spring is fixedly sleeved on the surface of the rotating shaft. One end of the torsion spring is fixedly connected to the inner wall of the receiving block. A clamping block is fixedly connected between the holding frame and the receiving block by a bolt.

[0016] Preferably, the leakage monitoring mechanism includes a conductive fiber block fixedly connected to one side of the T-shaped frame. The conductive fiber block is in close contact with the surface of the module body. A placement groove is formed on one side of the bottom plate. A graphite column is fixedly connected to the inner cavity of the placement groove. The positive electrode of the graphite column is electrically connected to the conductive fiber block through a wire, and the negative electrode of the graphite column is connected to the grounding device through a wire. Magnetic powder is placed in the inner cavity of the placement groove, and the magnetic powder is used to display the magnetic field generated after the graphite column is electrified. A transparent plate is fixedly connected to the inner side of the placement groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. By setting the positioning mechanism, the present invention can realize the pre-positioning during the installation of the module body, enabling the module body to be stably placed on the top of the bottom plate, thus ensuring the stability during the installation of the module body. And through the engagement of the card slot and the positioning block, the quick connection between the holding frame and the module body is realized, thereby improving the installation efficiency.

[0019] 2. By setting the loosening monitoring mechanism, when the T-shaped frame and the holding frame are loosened, it causes the inclination of the module body, resulting in a distance between the T-shaped frame, the holding frame and the positioning surface, canceling the vertical limit of the second inclined block on the first inclined block, so that the moving plate moves upward, canceling the limit on the first spring, and launching the gravity ball. The gravity ball presses the pressure sensor, thereby triggering the external alarm device, realizing the timely monitoring when the T-shaped frame and the holding frame are loosened, and improving the timely troubleshooting rate of faults after the installation of the PCS modular three-level inverter module.

[0020] 3. By setting the leakage monitoring mechanism, the present invention can realize the intuitive display of the leakage situation, avoiding electric shock accidents when maintenance personnel maintain the module body, thus realizing the monitoring of the leakage situation and improving the timely troubleshooting rate of faults after the installation of the PCS modular three-level inverter module; through the combined use of the positioning mechanism, the loosening monitoring mechanism and the leakage monitoring mechanism, the high-efficiency of the installation structure of the PCS modular three-level inverter module is realized, realizing the timely monitoring of the loosening of the installation structure and the leakage of the PCS modular three-level inverter module, thereby improving the timely troubleshooting rate of faults after the installation of the PCS modular three-level inverter module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the structure of the T-shaped frame, the holding frame and the bottom plate of the present invention;

[0023] Figure 3Schematic diagram of the three-dimensional structure of the bottom plate of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged schematic diagram at position A in the present invention;

[0025] Figure 5 Fitting schematic diagram of the positioning block and the bracket of the present invention;

[0026] Figure 6 Three-dimensional schematic diagram of the leakage monitoring mechanism of the present invention;

[0027] Figure 7 Three-dimensional schematic diagram of the first groove and the second groove of the present invention;

[0028] Figure 8 Partial three-dimensional schematic diagram of the loosening monitoring mechanism of the present invention;

[0029] Figure 9 Cross-sectional three-dimensional schematic diagram of the loosening monitoring mechanism of the present invention;

[0030] Figure 10 Three-dimensional schematic diagram of the rotating shaft and the torsion spring of the present invention.

[0031] In the figure: 1. Main body mechanism; 11. Module body; 12. T-shaped frame; 13. Bottom plate; 14. Bracket; 15. Card slot; 16. Positioning block; 2. Positioning mechanism; 201. Rotating groove; 202. Rotating rod; 203. First positioning plate; 204. Second positioning plate; 205. Guide block; 206. Guide hole; 207. First tension spring; 208. Steel wire rope; 209. Turning knob; 210. Positioning ring groove; 211. Welding groove; 212. Welding hole; 213. Guide groove; 214. Guide plate; 3. Loosening monitoring mechanism; 301. Accommodating block; 302. Baffle; 303. First groove; 304. Second groove; 305. Gravity ball; 306. Pressure sensor; 307. Sliding groove; 308. Moving plate; 309. Thrust rod; 310. Limit hole; 311. First spring; 312. Pushing cone; 313. Stop rod; 314. First inclined block; 315. Second inclined block; 316. Guide post; 317. Third tension spring; 318. Moving hole; 319. Moving groove; 320. Guide rod; 321. Second tension spring; 322. Moving block; 323. Limit ring; 324. Thrust post; 325. Positioning ring; 326. Second spring; 327. Rotating shaft; 328. Torsion spring; 329. Clamping block; 4. Leakage monitoring mechanism; 401. Conductive fiber block; 402. Placing groove; 403. Graphite column; 404. Magnetic powder; 405. Transparent plate. Detailed implementation method

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1 - 10 , the present invention provides a technical solution: a PCS modular three-level inverter module installation structure, including a main body mechanism 1. The main body mechanism 1 includes a module body 11. One side of the module body 11 is in close contact with a T-shaped frame 12. One side of the T-shaped frame 12 is fixedly connected to a bottom plate 13. The top of the bottom plate 13 is in contact with the bottom of the module body 11. A positioning mechanism 2 is arranged inside the bottom plate 13. The positioning mechanism 2 is used for pre-positioning the module body 11. The top of the T-shaped frame 12 is fixedly connected to a holding frame 14. Two card slots 15 are opened at the top of the holding frame 14. Two positioning blocks 16 are arranged on the surface of the holding frame 14. The positioning blocks 16 are tightly fitted with the holding frame 14 through the card slots 15. The two positioning blocks 16 are respectively fixedly connected to both sides of the module body 11 by welding. The positioning blocks 16 and the holding frame 14 are fixed by bolts.

[0034] As a further limitation of the positioning mechanism 2 of the present invention, the positioning mechanism 2 includes a rotating groove 201 opened at the bottom of the bottom plate 13. The inner wall of the rotating groove 201 is rotatably connected to a rotating rod 202 through a bearing. Two first positioning plates 203 are slidably connected to the top of the bottom plate 13. The two first positioning plates 203 are arranged oppositely. A second positioning plate 204 is slidably connected to the top of the bottom plate 13. The second positioning plate 204 is located between the two first positioning plates 203. A plurality of guide blocks 205 are fixedly connected to the bottoms of the first positioning plate 203 and the second positioning plate 204. Guide holes 206 matching with the guide blocks 205 are opened at the top of the bottom plate 13. The surface of the guide block 205 is in contact with the inner cavity of the guide hole 206. A first tension spring 207 is fixedly connected to the inner side of the guide hole 206. One end of the first tension spring 207 is fixedly connected to one side of the guide block 205. The other side of the guide block 205 is fixedly connected to a steel wire rope 208. The steel wire rope 208 is slidably connected to the inner wall of the bottom plate 13. One end of the steel wire rope 208 penetrates into the inner cavity of the rotating groove 201 and is fixedly connected to the surface of the rotating rod 202. A rotary knob 209 is fixedly connected to the bottom end of the rotating rod 202. A positioning ring groove 210 is opened at the bottom of the bottom plate 13. The rotary knob 209 and the bottom plate 13 are limited by embedding bolts into the inner cavity of the positioning ring groove 210. By setting the positioning mechanism 2, pre-positioning during the installation of the module body 11 can be achieved, enabling the module body 11 to be stably placed on the top of the bottom plate 13, thereby ensuring the stability during the installation of the module body 11 and improving the installation efficiency.

[0035] A welding groove 211 is provided on the side of the positioning block 16, and a welding hole 212 is provided on one side of the positioning block 16. The welding groove 211 and the welding hole 212 are used to increase the welding surface. By providing the welding groove 211 and the welding hole 212, it is convenient for the installer to weld and position the positioning block 16, thereby increasing the welding area and thus increasing the stability of the positioning block 16 after being welded to both sides of the module body 11.

[0036] A guide groove 213 is provided on the inner side of the guide hole 206, and guide plates 214 are fixedly connected to both sides of the guide block 205, and the surface of the guide plate 214 is in contact with the inner cavity of the guide groove 213; by setting the guide groove 213 and the guide plate 214 for coordinated use, stable guidance of the guide block 205 is achieved, the stability of the guide block 205 when moving is increased, and random shaking of the guide block 205 when moving is avoided.

[0037] The specific implementation manner of this embodiment is as follows: When installers install the module body 11, they drill holes at the positioning points and embed expansion tubes. Then, by passing several bolts through the T-shaped frame 12 and the holding frame 14 respectively, and using an external tightening device to screw the bolts into the expansion tubes, the positioning of the T-shaped frame 12 and the holding frame 14 is achieved. Subsequently, the module body 11 is placed on the top of the bottom plate 13, with one side of the module body 11 closely attached to one side of the T-shaped frame 12 and the holding frame 14, so that the module body 11 is located inside the holding frame 14. The installer rotates the knob 209. The rotation of the knob 209 drives the rotating rod 202 to rotate. The rotation of the rotating rod 202 synchronously tightens several steel wire ropes 208. The tightening of the steel wire ropes 208 pulls the guide block 205, causing the guide block 205 to move inside the inner cavity of the guide hole 206. The guide block 205 realizes stable movement in the guide hole 206 through the cooperation of the guide groove 213 and the guide plate 214. The movement of the guide block 205 stretches the first tension spring 207. When the guide block 205 loses the pulling force, the reaction force of the first tension spring 207 will drive the guide block 205 to reset. Along with the movement of the guide block 205, the first positioning plate 203 and the second positioning plate 204 are driven to approach the module body 11 synchronously. Anti-slip pads are provided on one side of the first positioning plate 203 and the second positioning plate 204 to increase the friction with the module body 11 until the first positioning plate 203, the second positioning plate 204 and the surface of the module body 11 are in close contact. At this time, the installer passes a bolt through the knob 209 and uses an external tightening device to screw the bolt into the positioning ring groove 210 to achieve the positioning of the rotation angle of the knob 209, thereby realizing the pre-positioning of the module body 11. After completing the pre-positioning of the module body 11, the installer slidably sleeved the positioning block 16 on the surface of the holding frame 14 through the card slot 15 until one side of the positioning block 16 is located in the middle position of the module body 11. At this time, the installer positions the positioning block 16 on the surface of the module body 11 through the welding hole 212, and then performs repair welding through the welding groove 211 to increase the stability between the positioning block 16 and the module body 11. Subsequently, the installer fixes the positioning block 16 and the holding frame 14 with bolts.

[0038] Embodiment 2: Please refer to Figures 1 - 10 , the present invention provides a technical solution: A PCS modular three-level inverter module installation structure. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. A loosening monitoring mechanism 3 is provided inside the holding frame 14. The loosening monitoring mechanism 3 is used to monitor the loosening after the holding frame 14 and the T-shaped frame 12 are installed.

[0039] As a further limitation of the loosening monitoring mechanism 3 of the present invention, the loosening monitoring mechanism 3 includes a receiving block 301. The receiving block 301 is fixedly connected to the bottom of the holding bracket 14. An operation groove is provided on the inner wall of the receiving block 301. A baffle 302 is rotatably connected to the inner cavity of the operation groove. The operation groove is divided into a first groove 303 and a second groove 304 by the baffle 302. A gravity ball 305 is placed in the inner cavity of the first groove 303. A pressure sensor 306 is fixedly connected to the inner side of the second groove 304. The gravity ball 305 and the pressure sensor 306 are used in cooperation. The pressure sensor 306 is electrically connected to an external alarm device. A sliding groove 307 is provided on the bottom of the holding bracket 14. A moving plate 308 is slidably connected to the inner cavity of the sliding groove 307. A top rod 309 is fixedly connected to the top of the moving plate 308. A limiting hole 310 is provided on the inner wall of the holding bracket 14. The surface of the top rod 309 is in contact with the inner cavity of the limiting hole 310. A first spring 311 is fixedly connected to the inner side of the first groove 303. One end of the first spring 311 is fixedly connected to a pushing cone 312. The inner wall of the pushing cone 312 is in contact with the surface of the gravity ball 305. A stop rod 313 is slidably connected to the inner wall of the pushing cone 312. The bottom end of the stop rod 313 penetrates into the inner cavity of the limiting hole 310. The stop rod 313 and the top rod 309 are used in cooperation. A first inclined block 314 is fixedly connected to the top of the moving plate 308. A moving hole 318 is provided on one side of the receiving block 301. A second inclined block 315 is slidably connected to the inner wall of the moving hole 318. The inclined surface of the first inclined block 314 and the inclined surface of the second inclined block 315 are used in cooperation. Two guide posts 316 are fixedly connected to the inner wall of the moving hole 318. The two guide posts 316 are symmetrically arranged at the top and bottom of the second inclined block 315. The inner wall of the second inclined block 315 is in contact with the surface of the guide posts 316. Two third tension springs 317 are fixedly connected to the inner wall of the moving hole 318. One end of the third tension spring 317 is fixedly connected to one side of the second inclined block 315. The third tension spring 317 is slidably sleeved on the surface of the guide posts 316; by setting the loosening monitoring mechanism 3, when the T-shaped frame 12 and the holding bracket 14 are loosened, it causes the inclination of the module body 11, resulting in a distance between the T-shaped frame 12, the holding bracket 14 and the positioning surface, canceling the vertical limit of the second inclined block 315 on the first inclined block 314, thereby moving the moving plate 308 upward, canceling the limit on the first spring 311, launching the gravity ball 305, applying pressure to the pressure sensor 306 through the gravity ball 305, thereby triggering the external alarm device, realizing the timely monitoring when the T-shaped frame 12 and the holding bracket 14 are loosened, and improving the timely troubleshooting rate of faults after the installation of the PCS modular three-level inverter module.

[0040] Two moving grooves 319 are formed in the inner side of the sliding groove 307. The two moving grooves 319 are arranged oppositely. A guide rod 320 is fixedly connected to the inner wall of the moving groove 319. A second tension spring 321 is slidably sleeved on the surface of the guide rod 320. The top end of the second tension spring 321 is fixedly connected to the inner top of the moving groove 319. The bottom end of the second tension spring 321 is fixedly connected to a moving block 322. The inner wall of the moving block 322 contacts the surface of the guide rod 320. The opposite sides of the two moving blocks 322 are respectively fixedly connected to both sides of the moving plate 308. By setting the cooperation of the moving groove 319, the guide rod 320 and the moving block 322, the vertical guiding of the moving plate 308 is realized, the stability of the vertical movement of the moving plate 308 is increased, and through the setting of the second tension spring 321, the reset of the moving plate 308 after the vertical displacement can be realized by means of the reaction force of the second tension spring 321.

[0041] A limiting ring 323 is fixedly connected to the inner wall of the limiting hole 310. The inner cavity of the limiting ring 323 contacts the surface of the blocking rod 313. A top column 324 is fixedly connected to the top of the ejector rod 309. The top of the top column 324 contacts the bottom of the blocking rod 313. By setting the limiting ring 323 and the top column 324, when the ejector rod 309 moves upward, the top column 324 is driven to move upward to eject the blocking rod 313 out of the inner cavity of the limiting hole 310. At this time, the vertical movement distance of the ejector rod 309 is limited by the limiting ring 323, so as to prevent the ejector rod 309 from moving upward excessively and hindering the movement of the pushing cone 312. The height of the top column 324 is slightly higher than the height of the limiting ring 323, which is convenient to completely eject the blocking rod 313 out of the inner cavity of the limiting hole 310.

[0042] A positioning ring 325 is fixedly connected to the surface of the pushing cone 312. A second spring 326 is fixedly connected to the surface of the blocking rod 313. The top end of the second spring 326 is fixedly connected to the bottom of the positioning ring 325. By setting the cooperation of the positioning ring 325 and the second spring 326, the elastic adjustment of the vertical movement distance of the blocking rod 313 is realized, and through the reaction force of the second spring 326, the reset of the vertical movement of the blocking rod 313 can be realized, so that when the blocking rod 313 moves to the entrance of the limiting hole 310, it can automatically embed into the inner cavity of the limiting hole 310.

[0043] The inner wall of the accommodating block 301 is rotatably connected with a rotating shaft 327. The surface of the rotating shaft 327 is fixedly connected with the inner wall of the baffle 302. A torsion spring 328 is fixedly sleeved on the surface of the rotating shaft 327. One end of the torsion spring 328 is fixedly connected with the inner wall of the accommodating block 301. A clamping block 329 is fixedly connected between the bracket 14 and the accommodating block 301 by bolts; by setting the combined use of the rotating shaft 327 and the torsion spring 328, the elastic adjustment of the rotation angle of the baffle 302 is realized, and the automatic reset of the baffle 302 after rotation is realized through the reaction force of the torsion spring 328. The elastic coefficient of the torsion spring 328 is greater than the thrust of the gravity ball 305 on the baffle 302 itself, ensuring that the baffle 302 can limit the gravity ball 305 in the inner cavity of the first groove 303 under normal conditions. The elastic force coefficient of the torsion spring 328 is less than the impact force when the first spring 311 cooperates with the gravity ball 305, ensuring that when loosening occurs, the gravity ball 305 can smoothly push open the baffle 302 under the rebounding force of the first spring 311 and enter the inner cavity of the second groove 304. By setting the clamping block 329, the blocking of the entrances of the first groove 303 and the second groove 304 in the accommodating block 301 can be realized, and by disassembling the clamping block 329, it is convenient for maintenance personnel to reposition the gravity ball 305, as well as the first inclined block 314 and the second inclined block 315.

[0044] The specific implementation of this embodiment is as follows: After the module body 11 is installed, during the use process, due to the long-term vibration during the operation of the module body 11 or the problem of insufficient installation firmness, the problem of loosening occurs at the T-shaped frame 12, the holding frame 14 and the positioning point. After loosening, the holding frame 14 and the T-shaped frame 12 cooperate with the gravity of the module body 11 to cause a certain degree of inclination. In the tightened state, one side of the second inclined block 315 is in close contact with the positioning surface, and at this time, the third tension spring 317 is stretched. When the holding frame 14 and the T-shaped frame 12 are inclined, a distance is generated between the holding frame 14, the T-shaped frame 12 and the positioning surface. At this time, through the reaction force of the third tension spring 317, the second inclined block 315 moves towards the positioning surface. At this time, the second inclined block 315 is guided by the guide post 316 through the moving hole 318, increasing the stability of the second inclined block 315 during movement. The movement of the second inclined block 315 causes the first inclined block 314 in contact with it to generate a vertical displacement of the moving plate 308 under the cooperation of the moving groove 319, the guide rod 320, the second tension spring 321 and the moving block 322. The upward movement of the moving plate 308 drives the ejector rod 309 to move upward. The upward movement of the ejector rod 309 drives the ejector post 324 to vertically push the stop rod 313, so that one end of the stop rod 313 completely moves out of the inner cavity of the limit hole 310. The stop rod 313 realizes elastic adjustment of the vertical movement distance through the positioning ring 325 and the second spring 326. At this time, the maximum upward movement distance of the ejector rod 309 is limited by the limit ring 323 to prevent the ejector rod 309 from moving upward excessively. After the stop rod 313 moves out of the inner cavity of the limit hole 310, the first spring 311 loses its compression force. At this time, the reaction force of the first spring 311 drives the pushing cone 312 to move. The movement of the pushing cone 312 ejects the gravity ball 305 attached to its inner side. During the ejection process of the gravity ball 305, it pushes the baffle 302, causing the baffle 302 to flip, canceling the isolation of the first groove 303 and the second groove 304. The gravity ball 305 enters the inner cavity of the second groove 304. The inner bottom of the second groove 304 is inclined to guide the gravity ball 305 so that the gravity ball 305 can accurately fall into the position of the pressure sensor 306. The weight of the gravity ball 305 exerts pressure on the pressure sensor 306, causing the pressure sensor 306 to generate a pressure value. Subsequently, this pressure signal is converted into a warning message through external related devices and transmitted to the communication device of the maintenance personnel. This is the prior art, so it will not be elaborated. An alarm is given to the user to notify the user to timely maintain the installation fault of the module body 11.

[0045] Embodiment 3: Please refer to Figures 1 - 10 , the present invention provides a technical solution: A PCS modular three-level inverter module installation structure. The present invention makes corresponding improvements to the technical problems mentioned in the background art. A leakage monitoring mechanism 4 is provided on one side of the bottom plate 13. The leakage monitoring mechanism 4 is used to monitor the leakage condition of the module body 11.

[0046] As a further limitation of the leakage monitoring mechanism 4 of the present invention, the leakage monitoring mechanism 4 includes a conductive fiber block 401. The conductive fiber block 401 is fixedly connected to one side of the T-shaped frame 12, and the conductive fiber block 401 is in close contact with the surface of the module body 11. A placement groove 402 is provided on one side of the bottom plate 13. A graphite column 403 is fixedly connected to the inner cavity of the placement groove 402. The positive electrode of the graphite column 403 is electrically connected to the conductive fiber block 401 through a wire, and the negative electrode of the graphite column 403 is connected to the grounding device through a wire. Magnetic powder 404 is placed in the inner cavity of the placement groove 402. The magnetic powder 404 is used to display the magnetic field generated after the graphite column 403 is energized. A transparent plate 405 is fixedly connected to the inner side of the placement groove 402. By providing the leakage monitoring mechanism 4, an intuitive display of the leakage condition can be realized, avoiding electric shock accidents when maintenance personnel maintain the module body 11, thereby realizing the monitoring of the leakage condition and improving the timely troubleshooting rate of faults after the installation of the PCS modular three-level inverter module.

[0047] The specific implementation of this embodiment is as follows: When the PCS modular three-level inverter module is installed and during operation, due to problems such as insulation aging and excessive environmental humidity, a leakage phenomenon occurs. Structures such as the bottom plate 13, the T-shaped frame 12, and the holding frame 14 that are in contact with the module body 11 are all covered with insulating paint and have insulation properties. The current is transmitted from the module body 11 to the conductive fiber block 401. The conductive fiber is a fabric made of conductive materials such as carbon nanotubes or silver nanowires. Through the flexibility of the conductive fiber, the close fit between the conductive fiber block 401 and the module body 11 is ensured. The conductive fiber block 401 transmits the current leaked from the module body 11 through a wire and enters the graphite column 403 through the positive electrode of the graphite column 403, energizing the graphite column 403. When the graphite column 403 is energized, a magnetic field will be generated around it. This is the basic principle of electromagnetics, that is, current generates a magnetic field. The magnetic field can exert an attractive force on the magnetic powder 404, causing the magnetic powder 404 to be arranged along the direction of the magnetic field lines. Therefore, at this time, the maintenance personnel only need to observe the distribution of the magnetic powder 404 in the placement groove 402 through the transparent plate 405 to know whether the module body 11 is leaking. The current introduced passes through the negative electrode of the graphite column 403 and is subjected to harmless grounding treatment through a wire.

[0048] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCS modular three-level inverter module installation structure, comprising a main body structure (1), wherein the main body structure (1) comprises a module body (11), characterized in that: One side of the module body (11) is in close contact with a T-shaped frame (12), one side of the T-shaped frame (12) is fixedly connected to a bottom plate (13), the top of the bottom plate (13) is in contact with the bottom of the module body (11), a positioning mechanism (2) is provided inside the bottom plate (13), the positioning mechanism (2) is used to pre-position the module body (11), the top of the T-shaped frame (12) is fixedly connected to a holding frame (14), the top of the holding frame (14) is provided with two slots (15), the surface of the holding frame (14) is provided with two positioning blocks (16), the positioning blocks (16) are tightly fitted with the holding frame (14) through the slots (15), the two positioning blocks (16) are fixedly connected to the two sides of the module body (11) by welding, and the positioning blocks (16) and the holding frame (14) are fixed by bolts; A looseness monitoring mechanism (3) is provided inside the holding frame (14), and the looseness monitoring mechanism (3) is used to monitor the looseness of the holding frame (14) and the T-shaped frame (12) after installation; A leakage monitoring mechanism (4) is provided on one side of the bottom plate (13), and the leakage monitoring mechanism (4) is used to monitor the leakage condition of the module body (11); The positioning mechanism (2) comprises a rotating groove (201), the rotating groove (201) being provided at the bottom of the bottom plate (13), the inner wall of the rotating groove (201) being rotatably connected to a rotating rod (202) via a bearing, the top of the bottom plate (13) being slidably connected to two first positioning plates (203), the two first positioning plates (203) being arranged opposite to each other, the top of the bottom plate (13) being slidably connected to a second positioning plate (204), the second positioning plate (204) being located between the two first positioning plates (203), the bottoms of the first positioning plates (203) and the second positioning plates (204) being fixedly connected to a plurality of guide blocks (205), the top of the bottom plate (13) being provided with guide holes (206) for use with the guide blocks (205), the guide blocks (20 5) contacts the inner cavity of the guide hole (206), a first tension spring (207) is fixedly connected to the inner side of the guide hole (206), one end of the first tension spring (207) is fixedly connected to one side of the guide block (205), the other side of the guide block (205) is fixedly connected to a wire rope (208), the wire rope (208) is slidably connected to the inner wall of the bottom plate (13), one end of the wire rope (208) passes through the inner cavity of the rotating groove (201) and is fixedly connected to the surface of the rotating rod (202), the bottom end of the rotating rod (202) is fixedly connected to a knob (209), a positioning ring groove (210) is provided at the bottom of the bottom plate (13), and the knob (209) and the bottom plate (13) are limited by embedding a bolt into the inner cavity of the positioning ring groove (210).

2. A PCS modular three-level inverter module installation structure according to claim 1, characterized in that: A welding groove (211) is provided on the side of the positioning block (16), and a welding hole (212) is provided on one side of the positioning block (16); the welding groove (211) and the welding hole (212) are used to increase the welding surface.

3. A PCS modular three-level inverter module installation structure according to claim 1, characterized in that: A guide groove (213) is provided on the inner side of the guide hole (206), and guide plates (214) are fixedly connected to both sides of the guide block (205), and the surface of the guide plate (214) is in contact with the inner cavity of the guide groove (213).

4. A PCS modular three-level inverter module installation structure according to claim 1, characterized in that: The looseness monitoring mechanism (3) comprises a receiving block (301), the receiving block (301) being fixedly connected to the bottom of the holding frame (14), an operating groove being provided on the inner wall of the receiving block (301), the inner cavity of the operating groove being rotatably connected to a baffle (302), the operating groove being divided into a first groove (303) and a second groove (304) by the baffle (302), a gravity ball (305) being placed in the inner cavity of the first groove (303), a pressure sensor (306) being fixedly connected to the inner side of the second groove (304), and a pressure sensor (306) being provided between the gravity ball (305) and the pressure sensor (306). In cooperation with the apparatus, the pressure sensor (306) is electrically connected to an external alarm device, a sliding groove (307) is provided at the bottom of the bracket (14), a moving plate (308) is slidably connected to the inner cavity of the sliding groove (307), a top rod (309) is fixedly connected to the top of the moving plate (308), a limiting hole (310) is provided on the inner wall of the bracket (14), a surface of the top rod (309) contacts the inner cavity of the limiting hole (310), a first spring (311) is fixedly connected to the inner side of the first groove (303), and one end of the first spring (311) is fixedly connected to the inner side of the first groove (303). A pushing cone (312) is provided, the inner wall of the pushing cone (312) contacts the surface of the gravity ball (305), the inner wall of the pushing cone (312) is slidably connected to a blocking rod (313), the bottom end of the blocking rod (313) penetrates into the inner cavity of the limiting hole (310), the blocking rod (313) is used in conjunction with a top rod (309), the top of the moving plate (308) is fixedly connected to a first inclined block (314), a moving hole (318) is opened on one side of the accommodating block (301), the inner wall of the moving hole (318) is slidably connected to a second inclined block (315), the first inclined block ( The inclined surface of the movable hole (314) is used in conjunction with the inclined surface of the second inclined block (315), the inner wall of the movable hole (318) is fixedly connected with two guide pillars (316), the two guide pillars (316) are symmetrically arranged at the top and bottom of the second inclined block (315), the inner wall of the second inclined block (315) is in contact with the surface of the guide pillars (316), the inner wall of the movable hole (318) is fixedly connected with two third tension springs (317), one end of the third tension spring (317) is fixedly connected with one side of the second inclined block (315), and the third tension spring (317) is slidably sleeved on the surface of the guide pillar (316).

5. A PCS modular three-level inverter module installation structure according to claim 4, characterized in that: Two movable grooves (319) are provided on the inner side of the sliding groove (307), and the two movable grooves (319) are arranged opposite to each other. The inner wall of the movable groove (319) is fixedly connected to a guide rod (320), and the surface sliding sleeve of the guide rod (320) is provided with a second tension spring (321), the top end of the second tension spring (321) is fixedly connected to the inner top of the movable groove (319), and the bottom end of the second tension spring (321) is fixedly connected to a moving block (322), the inner wall of the moving block (322) contacts the surface of the guide rod (320), and the opposite sides of the two moving blocks (322) are respectively fixedly connected to the two sides of the movable plate (308).

6. A PCS modular three-level inverter module installation structure according to claim 4, characterized in that: The inner wall of the limiting hole (310) is fixedly connected to a limiting ring (323), the inner cavity of the limiting ring (323) contacts the surface of the blocking rod (313), the top of the top rod (309) is fixedly connected to a top column (324), and the top of the top column (324) contacts the bottom of the blocking rod (313).

7. A PCS modular three-level inverter module installation structure according to claim 4, characterized in that: A positioning ring (325) is fixedly connected to the surface of the pushing cone (312), a second spring (326) is fixedly connected to the surface of the blocking rod (313), and the top end of the second spring (326) is fixedly connected to the bottom end of the positioning ring (325).

8. A PCS modular three-level inverter module installation structure according to claim 4, characterized in that: The inner wall of the accommodating block (301) is rotatably connected to a rotating shaft (327), the surface of the rotating shaft (327) is fixedly connected to the inner wall of the baffle (302), a torsion spring (328) is fixedly sleeved on the surface of the rotating shaft (327), one end of the torsion spring (328) is fixedly connected to the inner wall of the accommodating block (301), and a clamping block (329) is fixedly connected between the holding frame (14) and the accommodating block (301) via bolts.

9. The PCS modular three-level inverter module installation structure according to claim 1, characterized in that: The leakage monitoring mechanism (4) comprises a conductive fiber block (401), the conductive fiber block (401) being fixedly connected to one side of a T-shaped frame (12), the conductive fiber block (401) being in close contact with the surface of the module body (11), a placement groove (402) being provided on one side of the bottom plate (13), a graphite column (403) being fixedly connected to the inner cavity of the placement groove (402), a positive electrode of the graphite column (403) being electrically connected to the conductive fiber block (401) via a wire, a negative electrode of the graphite column (403) being connected to a grounding device via a wire, a magnetic powder (404) being placed in the inner cavity of the placement groove (402), the magnetic powder (404) being used to display a magnetic field generated when the graphite column (403) is energized, and a transparent plate (405) is fixedly connected to the inner side of the placement groove (402).

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