High protection frequency converter

Abstract

The utility model discloses a kind of high protection frequency converters, it relates to frequency converter technical field.The device includes frequency converter, the inside of frequency converter is provided with connecting line, the inside of frequency converter is provided with self-adapting sealing unit, air bag seal in self-adapting sealing unit is arranged inside fixed seat, air bag seal array is arranged, connecting line is movably clamped inside air bag seal;Gas pipe is arranged at the side of air bag seal, and gas pipe is communicated with air bag seal.The device is set by self-adapting sealing unit, air bag seal in it can be inflated by gas input, tightly fit the gap between connecting line and fixed seat, effectively seal to connecting line is realized, compared with traditional sealing ring, sealing effect is significantly improved, dust, water vapor and the like can be effectively prevented to enter the inside of frequency converter, meet the needs of user.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically a high-protection frequency converter. Background Technology

[0002] Variable frequency drives (VFDs), as common power control devices, are widely used in industrial automation, motor speed regulation, and many other fields. During actual use, VFDs have internal connecting wires that enable electrical connections between internal components and external devices, making them one of the key components ensuring the normal operation of the VFD.

[0003] However, the bottom connection wires of existing frequency converters are usually a single wire or a strand, and traditional sealing rings are insufficient to meet the sealing requirements when sealing them. Traditional sealing rings are mostly standard parts designed and manufactured according to specific specifications, with relatively fixed shapes and sizes.

[0004] The reason for this problem is that when used to seal the bottom connecting wires of a frequency converter, the uncertainty in the number and specifications of the connecting wires makes it impossible for traditional sealing rings to tightly fit the gap between the connecting wires and the frequency converter housing. Furthermore, during actual installation, traditional sealing rings are easily deformed by compression, leading to a decrease in sealing performance. In addition, with increased usage time, traditional sealing rings will age and lose elasticity, further reducing the sealing effect and allowing dust and moisture to easily enter the frequency converter, affecting its normal operation and service life. Therefore, we propose a high-protection frequency converter to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-protection frequency converter to solve the problems mentioned in the background art.

[0006] By adopting the above technical solution, an effective seal between the connecting wire and the frequency converter was achieved.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: A high-protection frequency converter, including a frequency converter, a connecting wire is provided inside the frequency converter, and an adaptive sealing unit is provided inside the frequency converter, the adaptive sealing unit including a fixed base, an airbag seal and an air supply pipe; The airbag seal is located inside the fixed base, and the airbag seals are arranged in an array. The connecting line is movably snapped into the airbag seal. The air supply pipe is located on one side of the airbag seal and communicates with the airbag seal. Gas is introduced into the airbag seal through the air supply pipe, causing the airbag seal to inflate and fill the gap between the connecting line and the fixed base.

[0008] Preferably, the airbag seal includes a housing and an elastic sheet; The outer casing is fixedly assembled inside the mounting base, and the end of the outer casing is tightly fitted with the frequency converter. The outer casing is cylindrical. The elastic sheet is fixedly assembled on the inner wall of the outer casing.

[0009] Preferably, the airbag seal further includes a cavity; The cavity is located inside the outer shell, and the gas supply pipe communicates with the cavity.

[0010] Preferably, the end of the gas pipeline is provided with a one-way valve, the one-way valve including a fixing frame and a vertical rod; The fixing frame is fixedly assembled inside the gas pipeline; the upright is slidably connected inside the fixing frame.

[0011] Preferably, the one-way valve further includes a baffle and a spring; The baffle is fixedly assembled on the upper end of the upright, and the baffle abuts against the inner wall of the fixing frame. The baffle is used to prevent gas leakage. The spring is sleeved on the outer surface of the upright, and the spring is fixedly assembled with the baffle. The spring abuts against the inner wall of the fixing frame.

[0012] Preferably, the one-way valve further includes a locking block and a protective shell; The locking block is fixedly assembled at the lower end of the upright, and the locking block fits tightly against the inner wall of the fixing frame. The locking block is used to prevent the upright from sliding out of the inside of the fixing frame; the protective shell is threadedly assembled at the end of the gas pipeline.

[0013] Preferably, the bottom of the frequency converter is provided with a guide bucket, and the guide bucket is in the shape of an inverted trapezoid.

[0014] Preferably, connecting blocks are provided on both sides of the fixing base, and fastening bolts are provided inside the connecting blocks, the fastening bolts being threaded into the frequency converter.

[0015] This utility model discloses a high-protection frequency converter, which has the following beneficial effects: The device is equipped with an adaptive sealing unit, in which the airbag seal can expand by gas input and tightly fit the gap between the connecting wire and the fixed seat, thereby achieving effective sealing of the connecting wire. Compared with traditional sealing rings, the sealing effect is significantly improved, which can effectively prevent dust, moisture and other substances from entering the inside of the frequency converter and meet the needs of users. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the adaptive sealing unit structure of this utility model; Figure 3 This is a schematic diagram of the airbag sealing component of this utility model; Figure 4This is a schematic diagram of the one-way valve structure of this utility model.

[0017] In the diagram: 1. Inverter; 2. Adaptive sealing unit; 21. Mounting base; 22. Airbag seal; 221. Housing; 222. Elastic sheet; 223. Cavity; 23. Air supply pipe; 24. One-way valve; 241. Mounting bracket; 242. Upright pole; 243. Baffle; 244. Spring; 245. Locking block; 246. Protective shell; 25. Guide bucket; 26. Connecting block; 27. Fastening bolt. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This application provides a high-protection frequency converter, solving the problem that existing frequency converters typically have only one or a single connecting wire at the bottom, making it difficult for traditional sealing rings to meet sealing requirements. Traditional sealing rings are mostly standard parts designed and manufactured according to specific specifications, with relatively fixed shapes and sizes.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] This utility model provides, for example Figure 1-3 The image shows a high-protection frequency converter.

[0022] Example 1: Includes a frequency converter 1, with connecting wires inside the frequency converter 1, and an adaptive sealing unit 2 inside the frequency converter 1. The adaptive sealing unit 2 includes a fixed base 21, an airbag seal 22, and an air supply pipe 23. The airbag seal 22 is located inside the fixed base 21. The airbag seals 22 are arranged in an array, and the connecting wire is movably snapped into the airbag seal 22. The air supply pipe 23 is located on one side of the airbag seal 22 and is connected to the airbag seal 22. Gas is introduced into the airbag seal 22 through the air supply pipe 23, causing the airbag seal 22 to inflate and fill the gap between the connecting wire and the fixed base 21.

[0023] The airbag seal 22 includes a housing 221 and an elastic sheet 222. The housing 221 is fixedly assembled inside the mounting base 21, and the end of the housing 221 is tightly fitted with the inverter 1. The housing 221 is cylindrical. The elastic sheet 222 is fixedly assembled on the inner wall of the housing 221. The airbag seal 22 also includes a cavity 223. The cavity 223 is opened inside the housing 221. The air supply pipe 23 communicates with the cavity 223. A guide bucket 25 is provided at the bottom of the inverter 1. The guide bucket 25 is in the shape of an inverted trapezoid. Connecting blocks 26 are provided on both sides of the mounting base 21. Fastening bolts 27 are provided inside the connecting blocks 26. The fastening bolts 27 are threadedly engaged with the inverter 1.

[0024] In this embodiment, when using the device, the fixing base 21 is installed in the corresponding position inside the frequency converter 1 through the connecting block 26 and the fastening bolt 27. The connecting wire is guided through the guide bucket 25 at the bottom of the frequency converter 1. Using the inverted trapezoidal guide structure of the guide bucket 25, the connecting wire is smoothly inserted between the airbag seals 22, avoiding scratching the airbag seals 22 during the insertion process. The connecting wire is movably locked inside the airbag seals 22. Gas is introduced into the airbag seals 22 through the gas supply pipe 23. After the gas enters the cavity 223, the airbag seals 22 inflate, thereby filling the gap between the connecting wire and the fixing base 21 and achieving a seal for the connecting wire.

[0025] This utility model discloses a high-protection frequency converter. More specifically, based on Embodiment 1, it is provided according to the appendix... Figure 1 , 4 As shown.

[0026] Example 2: Includes frequency converter 1, with connecting wires inside the frequency converter 1, and an adaptive sealing unit 2 inside the frequency converter 1. The adaptive sealing unit 2 includes a fixed base 21, an airbag seal 22, and an air supply pipe 23. The airbag seal 22 is located inside the fixed base 21. The airbag seals 22 are arranged in an array, and the connecting wire is movably snapped into the airbag seal 22. The air supply pipe 23 is located on one side of the airbag seal 22 and is connected to the airbag seal 22. Gas is introduced into the airbag seal 22 through the air supply pipe 23, causing the airbag seal 22 to inflate and fill the gap between the connecting wire and the fixed base 21.

[0027] A one-way valve 24 is provided at the end of the gas pipe 23. The one-way valve 24 includes a fixing frame 241 and a vertical rod 242. The fixing frame 241 is fixedly assembled inside the gas pipe 23. The vertical rod 242 is slidably connected inside the fixing frame 241. The one-way valve 24 also includes a baffle 243 and a spring 244. The baffle 243 is fixedly assembled at the upper end of the vertical rod 242 and abuts against the inner wall of the fixing frame 241. The baffle 243 is used to prevent gas leakage. The spring 244 is sleeved on the outer surface of the vertical rod 242. The spring 244 is fixedly assembled with the baffle 243 and abuts against the inner wall of the fixing frame 241. The one-way valve 24 also includes a locking block 245 and a protective shell 246; the locking block 245 is fixedly mounted on the lower end of the upright 242, and the locking block 245 is tightly fitted with the inner wall of the fixing frame 241. The locking block 245 is used to prevent the upright 242 from sliding out of the inside of the fixing frame 241; the protective shell 246 is threadedly mounted on the end of the gas pipe 23.

[0028] In this embodiment, when gas is input into the airbag seal 22 through the gas supply pipe 23, the gas pressure pushes the upright rod 242 to slide downward against the elastic force of the spring 244, causing the baffle 243 to separate from the inner wall of the fixing frame 241, allowing the gas to smoothly pass through the one-way valve 24 into the airbag seal 22. When the gas input stops, under the action of the elastic force of the spring 244, the upright rod 242 drives the baffle 243 to move downward, and the baffle 243 abuts against the inner wall of the fixing frame 241, preventing the gas in the airbag seal 22 from flowing back and leaking, thus ensuring the sealing effect of the airbag seal 22. When it is necessary to vent, the upright rod 242 is manually pressed to slide downward against the elastic force of the spring 244, at which time the gas can be vented. The operation is simple and meets the needs of users.

Claims

1. A high-protection frequency converter, comprising a frequency converter (1), wherein the frequency converter (1) is internally provided with connecting wires, characterized in that, The inverter (1) is internally provided with an adaptive sealing unit (2), which includes: Fixture (21); An airbag seal (22) is disposed inside the fixed base (21), the airbag seals (22) are arranged in an array, and the connecting line is movably snapped into the inside of the airbag seal (22); An air supply pipe (23) is provided on one side of the airbag seal (22). The air supply pipe (23) is connected to the airbag seal (22). Gas is introduced into the interior of the airbag seal (22) through the air supply pipe (23), causing the airbag seal (22) to inflate and fill the gap between the connecting line and the fixing seat (21).

2. The high-protection frequency converter according to claim 1, characterized in that: The airbag seal (22) includes: The housing (221) is fixedly assembled inside the mounting base (21), and the end of the housing (221) is tightly fitted with the frequency converter (1). The housing (221) is cylindrical. The elastic sheet (222) is fixedly mounted on the inner wall of the outer shell (221).

3. A high-protection frequency converter according to claim 2, characterized in that: The airbag seal (22) also includes: A cavity (223) is formed inside the outer shell (221), and the gas pipe (23) communicates with the cavity (223).

4. A high-protection frequency converter according to claim 1, characterized in that: The end of the gas pipeline (23) is provided with a one-way valve (24), the one-way valve (24) comprising: The mounting bracket (241) is fixedly assembled inside the gas pipeline (23); The upright (242) is slidably connected inside the fixed frame (241).

5. A high-protection frequency converter according to claim 4, characterized in that: The one-way valve (24) also includes: A baffle (243) is fixedly mounted on the upper end of the upright (242). The baffle (243) abuts against the inner wall of the fixing frame (241). The baffle (243) is used to prevent gas leakage. A spring (244) is sleeved on the outer surface of the upright (242), the spring (244) is fixedly assembled with the baffle (243), and the spring (244) abuts against the inner wall of the fixing frame (241).

6. A high-protection frequency converter according to claim 5, characterized in that: The one-way valve (24) also includes: A locking block (245) is fixedly mounted on the lower end of the upright (242). The locking block (245) is tightly fitted to the inner wall of the fixing frame (241). The locking block (245) is used to prevent the upright (242) from sliding out of the inside of the fixing frame (241). The protective shell (246) is threaded onto the end of the gas pipe (23).

7. A high-protection frequency converter according to claim 1, characterized in that: The inverter (1) is provided with a guide bucket (25) at the bottom, and the guide bucket (25) is in the shape of an inverted trapezoid.

8. A high-protection frequency converter according to claim 1, characterized in that: The fixed base (21) is provided with connecting blocks (26) on both sides, and fastening bolts (27) are provided inside the connecting blocks (26). The fastening bolts (27) are threadedly engaged with the frequency converter (1).

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