PCS modular three-level inverter module installation structure

Abstract

The invention discloses a PCS modular three-level inverter module installation structure, and relates to the technical field of PCS modular three-level inverter modules, the PCS modular three-level inverter module installation structure comprises a main body mechanism, the main body mechanism comprises 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, and the bottom plate is fixedly connected with the bottom plate. The PCS modular three-level inverter module installation structure comprises a bottom plate, the top of the bottom plate makes contact with the bottom of a module body, a positioning mechanism is arranged in the bottom plate and used for pre-positioning the module body, and the top of a T-shaped frame is fixedly connected with a holding frame. Through cooperative use of the positioning mechanism, the loosening monitoring mechanism and the electric leakage monitoring mechanism, high efficiency of the PCS modular three-level inverter module installation structure is realized, and timely monitoring of loosening of the installation structure and electric leakage of the PCS modular three-level inverter module is realized. Therefore, the timely elimination rate of faults after the PCS modular three-level inverter module is installed is improved.

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; A looseness monitoring mechanism is provided inside the bracket, and the looseness monitoring mechanism is used to monitor the looseness of the bracket and the T-shaped bracket after installation; 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.

[0006] The top of the base plate is provided with a second locating plate, and the second locating plate is located between the two first locating plates, and the second locating plate is located between the two first locating plates. The bottom of the first locating plate and the second locating plate are fixedly connected to a plurality of guide blocks. The top of the base plate is provided with a guide hole for use with the guide block, the surface of the guide block contacts the inner cavity of the guide hole, the inner side of the guide hole is fixedly connected with a first tension spring, one end of the first tension spring is fixedly connected with one side of the guide block, and the other side of the guide block is fixedly connected with a steel wire rope, the steel wire rope is slidably connected to the inner wall of the base 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, the bottom end of the rotating rod is fixedly connected with a rotating knob, and a positioning ring groove is provided at the bottom of the base plate, and the rotating knob and the base plate are limited by embedding a bolt into the inner cavity of the positioning ring groove.

[0007] Preferably, a welding groove is provided on a side surface of the positioning block, and a welding hole is provided on one side of the positioning block, and the welding groove and the welding hole are used to increase the welding surface.

[0008] Preferably, a guide groove is provided on the inner side of the guide hole, and guide plates are fixedly connected to both sides of the guide block, and the surface of the guide plate is in contact with the inner cavity of the guide groove.

[0009] Preferably, the looseness monitoring mechanism includes a accommodating block, which is fixedly connected to the bottom of the bracket, an operating groove is provided on the inner wall of the accommodating block, the inner cavity of the operating groove is rotatably connected to a baffle, the operating 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 conjunction with each other, the pressure sensor is electrically connected to an external alarm device, a sliding groove is provided at the bottom of the bracket, a moving plate is slidably connected to the inner cavity of the sliding groove, a push rod is fixedly connected to the top of the moving plate, a limiting hole is provided on the inner wall of the bracket, the surface of the push rod is in contact with 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 A pushing cone is fixedly connected, and the inner wall of the pushing cone contacts with the surface of the gravity ball. A blocking rod is slidably connected to the inner wall of the pushing cone, and the bottom end of the blocking rod passes through the inner cavity of the limiting hole. The blocking rod is used in conjunction with the top rod. A first inclined block is fixedly connected to the top of the movable plate, and a moving hole is provided on one side of the accommodating block. A second inclined block is slidably connected to the inner wall of the movable hole. The inclined surface of the first inclined block cooperates with the inclined surface of the second inclined block. Two guide posts are fixedly connected to the inner wall of the movable hole, and 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 post. Two third tension springs are fixedly connected to the inner wall of the movable hole, and one end of the third tension spring is fixedly connected to one side of the second inclined block, and the third tension spring is slidably sleeved on the surface of the guide post.

[0010] Preferably, two movable grooves are provided on the inner side of the sliding groove, and the two movable grooves are arranged opposite to each other. The inner wall of the movable groove is fixedly connected with a guide rod, and the surface sliding sleeve of the guide rod is provided with a second tension spring, the top of the second tension spring is fixedly connected to the inner top of the movable groove, and the bottom end of the second tension spring is fixedly connected with a moving block, the inner wall of the moving block contacts the surface of the guide rod, and the opposite sides of the two moving blocks are respectively fixedly connected to the two sides of the moving plate.

[0011] Preferably, a limiting ring is fixedly connected to the inner wall of the limiting hole, an inner cavity of the limiting ring contacts the surface of the blocking rod, a top column is fixedly connected to the top of the push rod, and the top of the top column contacts the bottom of the blocking rod.

[0012] 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, and a top end of the second spring is fixedly connected to a bottom end of the positioning ring.

[0013] Preferably, the inner wall of the accommodating block is rotatably connected to a rotating shaft, the surface of the rotating shaft is fixedly connected to the inner wall of the baffle, the surface of the rotating shaft is fixedly sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the inner wall of the accommodating block, and a clamping block is fixedly connected between the bracket and the accommodating block by bolts.

[0014] Preferably, the leakage monitoring mechanism includes a conductive fiber block, which is fixedly connected to one side of the T-shaped frame, and the conductive fiber block is in close contact with the surface of the module body. A placement groove is opened on one side of the bottom plate, and a graphite column is fixedly connected to the inner cavity of the placement groove. The positive pole of the graphite column is electrically connected to the conductive fiber block through a wire, and the negative pole of the graphite column is connected to a 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 energized. A transparent plate is fixedly connected to the inner side of the placement groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can achieve pre-positioning of the module body during installation by setting a positioning mechanism, so that the module body can be stably placed on the top of the base plate, thereby ensuring the stability of the module body during installation, and through the engagement of the card slot and the positioning block, a quick connection between the bracket and the module body is achieved, thereby improving the installation efficiency.

[0016] 2. The present invention sets a loosening monitoring mechanism, and when the T-frame and the bracket are loosened, the module body is tilted, a distance is generated between the T-frame, the bracket and the positioning surface, so that the second inclined block cancels the vertical limit of the first inclined block, thereby moving the movable plate upward, canceling the limit on the first spring, launching the gravity ball, and applying pressure to the pressure sensor through the gravity ball, thereby triggering the external alarm device, thereby realizing timely monitoring of the looseness of the T-frame and the bracket, and improving the timely elimination rate of faults after installation of the PCS modular three-level inverter module.

[0017] 3. The present invention can realize intuitive display of leakage conditions by setting a leakage monitoring mechanism, avoid electric shock accidents when maintenance personnel are maintaining the module body, thereby realizing monitoring of leakage conditions and improving the timely elimination rate of faults after installation of the PCS modular three-level inverter module; by setting a positioning mechanism, a looseness monitoring mechanism and the coordinated use of the leakage monitoring mechanism, the efficiency of the installation structure of the PCS modular three-level inverter module is realized, and the looseness of the installation structure and the timely monitoring of the leakage of the PCS modular three-level inverter module are realized, thereby improving the timely elimination rate of faults after installation of the PCS modular three-level inverter module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the T-shaped frame, the holding frame and the bottom plate of the present invention; Figure 3 It is a schematic diagram of the bottom three-dimensional structure of the bottom plate of the present invention; Figure 4For the present invention Figure 3 The enlarged schematic diagram of point A in the middle; Figure 5 It is a schematic diagram of the engagement of the positioning block and the holding frame of the present invention; Figure 6 It is a three-dimensional schematic diagram of the leakage monitoring mechanism of the present invention; Figure 7 is a three-dimensional schematic diagram of the first slot and the second slot of the present invention; Figure 8 It is a partial three-dimensional schematic diagram of the looseness monitoring mechanism of the present invention; Fig. 9 It is a cross-sectional stereoscopic schematic diagram of the looseness monitoring mechanism of the present invention; Fig.10 It is a three-dimensional schematic diagram of the rotating shaft and the torsion spring of the present invention.

[0019] In the figure: 1. Main body; 11. Module body; 12. T-shaped frame; 13. Bottom plate; 14. Bracket; 15. Slot; 16. Positioning block; 2. Positioning mechanism; 201. Rotation slot; 202. Rotation rod; 203. First positioning plate; 204. Second positioning plate; 205. Guide block; 206. Guide hole; 207. First tension spring; 208. Wire rope; 209. Turning knob; 210. Positioning ring groove; 211. Welding groove; 212. Welding hole; 213. Guide groove; 214. Guide plate; 3. Looseness monitoring mechanism; 301. Accommodating block; 302. Baffle; 303. First slot; 304. Second slot; 305. Gravity ball; 306. Pressure sensor; 3 07, sliding groove; 308, moving plate; 309, push rod; 310, limiting hole; 311, first spring; 312, pushing cone; 313, blocking rod; 314, first inclined block; 315, second inclined block; 316, guide column; 317, third tension spring; 318, moving hole; 319, moving groove; 320, guide rod; 321, second tension spring; 322, moving block; 323, limiting ring; 324, push column; 325, positioning ring; 326, second spring; 327, rotating shaft; 328, torsion spring; 329, card block; 4, leakage monitoring mechanism; 401, conductive fiber block; 402, placement groove; 403, graphite column; 404, magnetic powder; 405, transparent plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 10The 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 with a bottom plate 13, the top of the bottom plate 13 is in contact with the bottom of the module body 11, and a positioning mechanism 2 is arranged inside the bottom plate 13, and the positioning mechanism 2 is used to pre-position the module body 11, the top of the T-shaped frame 12 is fixedly connected with a holding frame 14, the top of the holding frame 14 is provided with two card slots 15, and 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 card slots 15, and the two positioning blocks 16 are respectively 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.

[0022] As a further limitation of the positioning mechanism 2 of the present invention, the positioning mechanism 2 includes a rotating groove 201, which is opened at the bottom of the base plate 13, and the inner wall of the rotating groove 201 is rotatably connected to a rotating rod 202 through a bearing. The top of the base plate 13 is slidably connected to two first positioning plates 203, and the two first positioning plates 203 are arranged opposite to each other. The top of the base plate 13 is slidably connected to a second positioning plate 204, and the second positioning plate 204 is located between the two first positioning plates 203. The bottoms of the first positioning plates 203 and the second positioning plates 204 are fixedly connected to a plurality of guide blocks 205, and the top of the base plate 13 is opened with a guide hole 206 used in conjunction with the guide block 205, the surface of the guide block 205 is in contact with the inner cavity of the guide hole 206, and the inner side of the guide hole 206 is fixedly connected to a first tension spring 207, one end of the first tension spring 207 is fixedly connected to one side of the guide block 205, and the other side of the guide block 205 is fixedly connected to a wire rope 208, and the wire rope 208 is slidably connected to the inner wall of the bottom plate 13, and 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, and the bottom end of the rotating rod 202 is fixedly connected to a knob 209, and 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; by setting the positioning mechanism 2, the module body 11 can be pre-positioned during installation, so that the module body 11 can be stably placed on the top of the bottom plate 13, thereby ensuring the stability of the module body 11 during installation and improving the installation efficiency.

[0023] 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.

[0024] 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.

[0025] The specific implementation method of this embodiment is as follows: when installing the module body 11, the installer drills holes at the positioning points and embeds the expansion tubes, then passes a number of bolts through the T-shaped frame 12 and the bracket 14 respectively, and screws the bolts into the expansion tubes through external tightening equipment to achieve the positioning of the T-shaped frame 12 and the bracket 14. Then, the module body 11 is placed on the top of the bottom plate 13, and one side of the module body 11 is pressed against one side of the T-shaped frame 12 and the bracket 14, so that the module body 11 is located on the inner side of the bracket 14. The installer turns the knob 209, The rotation of the knob 209 drives the rotating rod 202 to rotate, and the rotation of the rotating rod 202 synchronously tightens the plurality of steel wire ropes 208. The tightening of the steel wire ropes 208 pulls the guide block 205, so that the guide block 205 moves in 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 its tension, the reaction force of the first tension spring 207 drives the guide block 205 to recover. As the guide block 205 moves, the first positioning plate 203 and the second positioning plate 204 are driven to move synchronously toward the module body 11. The first positioning plate 203 and the second positioning plate 204 are both provided with anti-skid pads on one side to increase the friction between the module body 11, until the first positioning plate 203 and the second positioning plate 204 are in close contact with the surface of the module body 11. At this time, the installer passes the bolt through the knob 209 and screws the bolt into the positioning ring groove 210 through an external tightening device to achieve the positioning of the rotation angle of the knob 209, thereby achieving The module body 11 is pre-positioned. After completing the pre-positioning of the module body 11, the installer slides the positioning block 16 onto the surface of the bracket 14 through the slot 15 until one side of the positioning block 16 is located in the middle 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. Then the installer fixes the positioning block 16 to the bracket 14 with bolts.

[0026] Example 2: Please refer to Figure 1-Figure 10The 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 looseness monitoring mechanism 3 is arranged inside the bracket 14. The looseness monitoring mechanism 3 is used to monitor the looseness of the bracket 14 and the T-shaped bracket 12 after installation.

[0027] As a further limitation of the looseness monitoring mechanism 3 of the present invention, the looseness monitoring mechanism 3 includes a accommodating block 301, which is fixedly connected to the bottom of the bracket 14, and an operating groove is provided on the inner wall of the accommodating block 301. The inner cavity of the operating groove is rotatably connected to a baffle 302, and the operating 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, and 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 conjunction with each other, and the pressure sensor 306 is electrically connected to an external alarm device. The bottom of the bracket 14 is provided with a sliding groove 3 07, the inner cavity of the sliding groove 307 is slidably connected with a moving plate 308, the top of the moving plate 308 is fixedly connected with a push rod 309, the inner wall of the holding frame 14 is provided with a limiting hole 310, the surface of the push rod 309 contacts the inner cavity of the limiting hole 310, the inner side of the first groove 303 is fixedly connected with a first spring 311, one end of the first spring 311 is fixedly connected with a pushing cone 312, 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 with a blocking rod 313, the bottom end of the blocking rod 313 passes through the inner cavity of the limiting hole 310, the blocking rod 313 is used in conjunction with the push rod 309, the top of the moving plate 308 A first inclined block 314 is fixedly connected, a moving hole 318 is opened on one side of the accommodating block 301, and 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 cooperates with the inclined surface of the second inclined block 315. Two guide pillars 316 are fixedly connected to the inner wall of the moving hole 318. 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 contacts the surface of the guide pillars 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 guide The surface of the column 316; by setting up the loosening monitoring mechanism 3, when the T-frame 12 and the bracket 14 are loosened, the module body 11 is tilted, so that a distance is generated between the T-frame 12, the bracket 14 and the positioning surface, so that the second inclined block 315 cancels the vertical limit of the first inclined block 314, so that the movable plate 308 moves up, and the limit of the first spring 311 is cancelled, and the gravity ball 305 is launched. The pressure sensor 306 is pressed by the gravity ball 305, thereby triggering the external alarm device, realizing timely monitoring of the looseness of the T-frame 12 and the bracket 14, and improving the timely elimination rate of faults after the installation of the PCS modular three-level inverter module.

[0028] 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 with a guide rod 320, and the surface sliding sleeve of the guide rod 320 is provided with a second tension spring 321, the top of the second tension spring 321 is fixedly connected to the inner top of the movable groove 319, and the bottom of the second tension spring 321 is fixedly connected with a shift block 322, the inner wall of the shift block 322 contacts the surface of the guide rod 320, and the opposite sides of the two shift blocks 322 are respectively fixedly connected to the two sides of the movable plate 308; by setting the movable groove 319, the guide rod 320 and the shift block 322, the vertical guidance of the movable plate 308 is realized, the stability of the movable plate 308 during vertical movement is increased, and by the setting of the second tension spring 321, the reaction force of the second tension spring 321 can be used to realize the resetting of the movable plate 308 after vertical displacement.

[0029] The inner wall of the limiting hole 310 is fixedly connected to the limiting ring 323, the inner cavity of the limiting ring 323 contacts the surface of the blocking rod 313, and the top of the top column 324 is fixedly connected to the top of the push rod 309, and 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 push rod 309 moves upward, it drives the top column 324 to move upward to push the blocking rod 313 out of the inner cavity of the limiting hole 310. At this time, the vertical movement distance of the push rod 309 is limited by the limiting ring 323 to prevent the push rod 309 from moving upward excessively and hindering the movement of the push cone 312. The height of the top column 324 is slightly higher than the height of the limiting ring 323, which is convenient for completely pushing the blocking rod 313 out of the inner cavity of the limiting hole 310.

[0030] A positioning ring 325 is fixedly connected to the surface of the pushing cone 312, and a second spring 326 is fixedly connected to the surface of the blocking rod 313, and the top of the second spring 326 is fixedly connected to the bottom of the positioning ring 325; by setting the positioning ring 325 and the second spring 326 for use in coordination, the elastic adjustment of the vertical movement distance of the blocking rod 313 is achieved, and the reaction force of the second spring 326 can achieve the vertical resetting of the blocking rod 313, 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.

[0031] 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 to the inner wall of the baffle 302, and 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 bracket 14 and the accommodating block 301 by bolts; by setting the rotating shaft 327 and the torsion spring 328 for use in conjunction, the elastic adjustment of the rotation angle of the baffle 302 is achieved, and the automatic reset of the baffle 302 after rotation is achieved by the reaction force of the torsion spring 328, and the elastic coefficient of the torsion spring 328 is greater than the thrust of the gravity ball 305 itself on the baffle 302 , 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 coefficient of the torsion spring 328 is less than the impact force when the first spring 311 and the gravity ball 305 cooperate, ensuring that when loosening occurs, the gravity ball 305 can smoothly push the baffle 302 open under the rebound force of the first spring 311 and enter the inner cavity of the second groove 304, and by setting the block 329, the entrances of the first groove 303 and the second groove 304 in the accommodating block 301 can be blocked, and by removing the block 329, it is convenient for maintenance personnel to reposition the gravity ball 305, the first inclined block 314 and the second inclined block 315.

[0032] The specific implementation of this embodiment is as follows: after the module body 11 is installed, during use, due to the long-term vibration of the module body 11 during operation or the problem of low installation firmness, the T-frame 12, the bracket 14 and the positioning point become loose. The loosened bracket 14 and the T-frame 12 cooperate with the gravity of the module body 11 to produce a certain degree of inclination. In the tightened state, one side of the second inclined block 315 is tightly fitted with the positioning surface, and the third tension spring 317 is stretched at this time. When the bracket 14 and the T-frame 12 are tilted, a distance is generated between the bracket 14 and the T-frame 12 and the positioning surface. At this time, the through The reaction force of the third tension spring 317 causes the second inclined block 315 to move in the direction of the positioning surface. At this time, the second inclined block 315 is guided by the moving hole 318 and the guide column 316, which increases the stability of the second inclined block 315 when it moves. The movement of the second inclined block 315 causes the first inclined block 314 in contact with it to produce 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 push rod 309 to move upward. The upward movement of the push rod 309 drives the push column 324 to vertically push the blocking rod 313, so that one end of the blocking rod 313 is completely The first spring 311 of the second embodiment can be used to push the push rod 313 to the left of the second embodiment, so that the push rod 313 can be easily pushed up and down, thereby preventing the push rod 309 from moving too far. The isolation between the first groove 303 and the second groove 304 is eliminated, and 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. The pressure signal is then converted into early warning information through external related equipment and transmitted to the communication equipment of the maintenance personnel. This is a prior art, so it is not repeated here. An alarm is given to the user, and the user is notified to promptly maintain the installation failure of the module body 11.

[0033] Example 3: Please refer to Figure 1-Figure 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 leakage monitoring mechanism 4 is provided on one side of the base plate 13, and the leakage monitoring mechanism 4 is used to monitor the leakage condition of the module body 11.

[0034] 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, the conductive fiber block 401 is in close contact with the surface of the module body 11, a placement groove 402 is opened on one side of the bottom plate 13, and 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 electrically connected to the grounding device through a wire. The device is connected, and 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 setting up the leakage monitoring mechanism 4, the leakage status can be intuitively displayed, avoiding electric shock accidents when the maintenance personnel are maintaining the module body 11, thereby realizing the monitoring of the leakage status and improving the timely elimination rate of faults after the installation of the PCS modular three-level inverter module.

[0035] The specific implementation of this embodiment is as follows: after the PCS modular three-level inverter module is installed, during operation, leakage occurs due to insulation aging, excessive environmental humidity, and other problems. The structures in contact with the module body 11, such as the bottom plate 13, the T-shaped frame 12 and the bracket 14, are covered with insulating paint to have insulation. The current is transmitted to the conductive fiber block 401 through the module body 11. The conductive fiber is a fabric made of conductive materials such as carbon nanotubes or silver nanowires. The flexibility of the conductive fiber ensures that the conductive fiber block 401 is tightly fitted with the module body 11. The conductive fiber block 401 The current leaked from the module body 11 passes through the wire and enters the graphite column 403 through the positive electrode of the graphite column 403, so that the graphite column 403 is energized. When the graphite column 403 is energized, a magnetic field is generated around it. This is the basic principle of electromagnetism, that is, electric current generates a magnetic field, and the magnetic field can generate attraction for the magnetic powder 404, so that the magnetic powder 404 is arranged along the direction of the magnetic field line. Therefore, at this time, the maintenance personnel only need to observe the distribution of the magnetic powder 404 in the placement slot 402 through the transparent plate 405 to know whether the module body 11 is leaking. The current passed through the negative electrode of the graphite column 403 and is harmlessly grounded through the wire.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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).

2. A PCS modular three-level inverter module installation structure according to claim 1, characterized in that: 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).

3. A PCS modular three-level inverter module installation structure according to claim 2, 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.

4. A PCS modular three-level inverter module installation structure according to claim 2, 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).

5. The 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).

6. A PCS modular three-level inverter module installation structure according to claim 5, 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).

7. A PCS modular three-level inverter module installation structure according to claim 5, 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).

8. The PCS modular three-level inverter module installation structure according to claim 5, 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).

9. A PCS modular three-level inverter module installation structure according to claim 5, 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.

10. 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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