CN215819154U

CN215819154U - Frequency converter protection device

Info

Publication number: CN215819154U
Application number: CN202121271367.9U
Authority: CN
Inventors: 丁梦岩
Original assignee: Tianjin Huajian Intelligent Control Technology Co ltd
Current assignee: Tianjin Huajian Intelligent Control Technology Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-02-11
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a frequency converter protection device which comprises a bottom plate, a support frame, a protective shell, a support rod, a cooling dustproof assembly and a heat dissipation assembly, wherein the support frame is arranged on the bottom plate, the protective shell is arranged on the support frame, the support rod is arranged in the protective shell, one end of the cooling dustproof assembly is arranged on the bottom plate, the other end of the cooling dustproof assembly penetrates through the protective shell and is arranged in the protective shell, and the heat dissipation assembly is symmetrically arranged on the side surface of the protective shell. The utility model belongs to the technical field of frequency converter protection, and particularly relates to a frequency converter protection device.

Description

Frequency converter protection device

Technical Field

The utility model belongs to the technical field of frequency converter protection, and particularly relates to a frequency converter protection device.

Background

A variable-frequency drive (VFD) is an electric device that uses a frequency conversion technology and a microelectronic technology, and controls an ac motor by changing the frequency of a working power supply of the motor, and the VFD generates a large amount of heat during operation, and affects the normal operation of the VFD if the internal temperature of the VFD is too high. In order to avoid the inside high temperature of converter among the prior art, the converter generally can set up the air vent and make the steam that the internal work produced distribute away to reduce the inside operating temperature of converter. Because the hot gas is scattered and simultaneously may be accompanied with the entering of external cold wind, in order to prevent that external cold wind from carrying the inside that the dust got into the converter from the air vent, generally can set up the dust screen in the position department that corresponds the air vent and prevent that the dust from getting into. But along with converter operating time's extension, more and more dust can be adhered to the converter dust screen, and when the dust volume of adhering to reached certain degree, the dust screen can be blockked up by the dust and cause the temperature of converter too high to break down easily.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a frequency converter protection device which can convey cold air to a frequency converter while preventing dust through a cooling dustproof assembly so as to reduce the temperature of the frequency converter, and can discharge heat dissipated by the frequency converter in time by matching with a heat dissipation assembly so as to realize the protection effect on the frequency converter.

In order to realize the functions, the technical scheme adopted by the utility model is as follows: a frequency converter protection device comprises a bottom plate, a support frame, a protective shell, a support rod, a cooling dustproof assembly and a heat dissipation assembly, wherein the support frame is arranged on the bottom plate, the protective shell is arranged on the support frame, the support rod is arranged in the protective shell, one end of the cooling dustproof assembly is arranged on the bottom plate, the other end of the cooling dustproof assembly penetrates through the protective shell and is arranged in the protective shell, the heat dissipation assembly is symmetrically arranged on the side face of the protective shell, the cooling dustproof assembly comprises an air supply hole, a limiting cylinder, a three-way valve, a dustproof net, a hydraulic machine, a moving rod, an air supply plate, a connecting rod, a moving plate and a two-way valve, the air supply hole is symmetrically arranged on the bottom wall of the protective shell, the limiting cylinder is symmetrically arranged under the bottom wall of the protective shell and is arranged under the air supply hole, the three-way valve is uniformly arranged on the limiting cylinder and is close to one end of the protective shell, the dustproof net is detachably arranged on the side face of the limiting cylinder and is arranged on one side of the three-way valve, one end of the hydraulic machine is arranged on the bottom plate, the other end of the hydraulic machine penetrates through the bottom wall of the protective shell and is arranged in the protective shell, the moving rod is arranged in an inverted U-shaped structure, the moving rod is arranged on the telescopic end of the hydraulic machine, two ends of the moving rod penetrate through the air supply holes and are arranged in the limiting cylinder, the air supply plates are symmetrically arranged below two ends of the moving rod, the connecting rod is arranged on the moving rod, the moving plate is arranged on the connecting rod, the two one-way valves are uniformly arranged on the moving plate, the hydraulic machine is started, when the telescopic end of the hydraulic machine moves upwards, the connecting rod drives the connecting rod to move upwards through the moving rod, the connecting rod drives the moving plate to move upwards, and due to the arrangement of the two one-way valves, air can only flow from the lower part of the moving plate to the upper part of the moving plate in the protective shell, so that the pressure above the moving plate in the protective shell is increased in the ascending process of the moving plate, and heat generated by the frequency converter is rapidly discharged out of the protective shell through the heat dissipation assembly, realize the quick heat dissipation process of converter, when the flexible end downstream of hydraulic press, the hydraulic press area carriage release lever downstream, the carriage release lever area air feed board downstream, through the setting of check valve three, gas can only flow to spacing section of thick bamboo in from spacing section of thick bamboo, make air feed board in the in-process gas of downstream flow into spacing section of thick bamboo through the check valve three, send into the protection through the air feed hole again under the moving plate, spout the converter on the bracing piece through check valve two, realize sending the process of cold wind cooling to the converter, in addition at the in-process that gas flows into spacing section of thick bamboo through the check valve, through the setting of dust screen, keep apart to the protective housing outside, avoid the dust to get into to form piling up on the inherent converter of protection, realize the guard action to the converter.

Further, the heat dissipation assembly comprises a rotating shaft, a driving wheel, a toothed plate, an air outlet mesh plate and a baffle plate, the rotating shaft is symmetrically arranged on the side face of the protective shell, the driving wheel is connected to the rotating shaft and can be rotatably arranged on the inner side wall of the protective shell, one end of the toothed plate can move to penetrate through the supporting rod and is symmetrically arranged on the movable plate, the other end of the toothed plate is arranged on the supporting rod, the toothed plate is meshed with the driving wheel, the air outlet mesh plate is arranged in a circular structure with the rotating shaft as the center, the air outlet mesh plate is uniformly embedded in the side face of the protective shell, the baffle plate is connected to one end of the rotating shaft, away from the driving wheel, and is arranged on one side of the air outlet mesh plate, when the movable plate moves upwards, the movable plate drives the toothed plate to move upwards, the driving wheel is driven by the toothed plate to rotate, the driving wheel drives the baffle plate to rotate away from the position of the air outlet mesh plate, and hot air generated by the frequency converter is discharged from the air outlet mesh plate, when the movable plate moves downwards, the baffle blocks the air outlet screen plate, so that dust is prevented from entering the protective shell from the air outlet screen plate and being accumulated on the frequency converter for a long time without heat dissipation of the frequency converter.

Furthermore, an air outlet pipe is arranged on the protective shell, a first check valve is arranged in the air outlet pipe, and the moving plate further accelerates the discharge of high-temperature gas in the upward moving process through the arrangement of the air outlet pipe and the first check valve, so that the frequency converter is prevented from being damaged due to overhigh temperature.

Further, be equipped with the sealing member between the flexible end of hydraulic press and the protective housing diapire, prevent to reveal after air conditioning gets into in the protective housing, be unfavorable for the cooling to the converter.

The utility model adopts the structure to obtain the following beneficial effects: the utility model provides a frequency converter protection device, when the telescopic end of a hydraulic press moves upwards, the hydraulic press drives a connecting rod to move upwards through a moving rod, the connecting rod drives a moving plate to move upwards, gas can only flow from the lower part of the moving plate to the upper part of the moving plate due to the arrangement of a one-way valve II, so that the pressure above the moving plate in a protective shell is increased in the ascending process of the moving plate, the heat generated by a frequency converter is quickly discharged out of the protective shell through a heat dissipation assembly, the quick heat dissipation process of the frequency converter is realized, when the telescopic end of the hydraulic press moves downwards, the hydraulic press drives the moving rod to move downwards, the moving rod drives a gas feeding plate to move downwards, through the arrangement of a one-way valve III, the gas can only flow out of the limiting cylinder into the limiting cylinder, the gas flows into the limiting cylinder through the one-way valve in the downward movement process of the gas feeding plate and is fed into the position below the inner moving plate under the protection through a gas feeding hole, the cold air is sprayed to the frequency converter on the supporting rod through the one-way valve II to realize the process of cooling the frequency converter, in addition, in the process that the gas flows into the limiting cylinder through the one-way valve, dust is isolated to the outside of the protective shell through the arrangement of the dustproof net to prevent the dust from entering the protective shell and forming accumulation on the frequency converter, the protective effect on the frequency converter is realized, the toothed plate is driven to move upwards through the movable plate, the driving wheel drives the driving wheel to rotate through the rotating shaft to drive the baffle plate to rotate away from the position of the gas outlet net plate, hot air generated by the frequency converter is discharged through the gas outlet net plate, when the movable plate moves downwards, the baffle plate is blocked by the gas outlet net plate to prevent the dust from entering the protective shell from the gas outlet net plate and accumulating on the frequency converter for a long time without using the heat dissipation of the frequency converter, and the discharge of the high-temperature gas is further accelerated in the process of moving upwards through the arrangement of the gas outlet pipe and the one-way valve I, avoid the converter high temperature and damage, through the setting of sealing member, prevent to reveal after air conditioning gets into in the protective housing, be unfavorable for the cooling to the converter.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a frequency converter protection device according to the present invention;

fig. 2 is a side view of a frequency converter protection device of the present invention.

The device comprises a base plate 1, a bottom plate 2, a support frame 3, a protective shell 4, a support rod 5, a cooling dustproof assembly 6, a radiating assembly 7, an air supply hole 8, a limiting cylinder 9, a one-way valve III 10, a dustproof net 11, a hydraulic machine 12, a moving rod 13, an air supply plate 14, a connecting rod 15, a moving plate 16, a one-way valve II 17, a rotating shaft 18, a driving wheel 19, a toothed plate 20, an air outlet net plate 21, a baffle plate 22, an air outlet pipe 23, a one-way valve I24 and a sealing element.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the frequency converter protection device of the present invention comprises a bottom plate 1, a supporting frame 2, a protective casing 3, a supporting rod 4, a cooling dustproof assembly 5 and a heat dissipation assembly 6, wherein the supporting frame 2 is disposed on the bottom plate 1, the protective casing 3 is disposed on the supporting frame 2, the supporting rod 4 is disposed in the protective casing 3, one end of the cooling dustproof assembly 5 is disposed on the bottom plate 1, the other end of the cooling dustproof assembly 5 penetrates through the protective casing 3 and is disposed in the protective casing 3, the heat dissipation assembly 6 is symmetrically disposed on the side surface of the protective casing 3, the cooling dustproof assembly 5 comprises an air supply hole 7, a limiting cylinder 8, a three-way valve 9, a dustproof net 10, a hydraulic machine 11, a movable rod 12, an air supply plate 13, a connecting rod 14, a movable plate 15 and a two-way valve 16, the air supply hole 7 is symmetrically disposed on the bottom wall of the protective casing 3, the limiting cylinder 8 is symmetrically disposed under the air supply hole 7, three 9 of check valves evenly locate the one end that is close to protective housing 3 on the spacing section of thick bamboo 8, dust screen 10 can be dismantled and locate on the side of spacing section of thick bamboo 8 and locate three 9 one sides of check valves, hydraulic press 11 one end is located on the bottom plate 1 and the other end runs through protective housing 3 diapire and locates in protective housing 3, carriage release lever 12 is the type of falling U structure setting, carriage release lever 12 locates on the flexible end of hydraulic press 11 and both ends run through to supply gas hole 7 locate in spacing section of

thick bamboo

8, 13 symmetries of supplying gas are located under 12 both ends of carriage release lever, connecting rod 14 is located on carriage release lever 12, movable plate 15 is located on connecting rod 14, two 16 of check valves evenly locate on movable plate 15.

Radiator unit 6 includes pivot 17, drive wheel 18, pinion rack 19, gives vent to anger otter board 20 and baffle 21, pivot 17 symmetry is located on the side of protective housing 3, drive wheel 18 is connected in pivot 17 and the rotatable inside wall of locating

protective housing

3, 19 portable supporting rod 4 symmetries of running through of pinion rack one end are located on movable plate 15 and the other end is located on bracing piece 4, pinion rack 19 meshes with drive wheel 18 mutually, it uses pivot 17 to be circular structure setting as the center to give vent to anger otter board 20, give vent to anger the even embedded side of locating protective housing 3 of otter board 20 on, baffle 21 is connected and is kept away from the one end of drive wheel 18 and locates out otter board 20 one side of giving vent to anger in pivot 17.

An air outlet pipe 22 is arranged on the protective shell 3, and a one-way valve I23 is arranged in the air outlet pipe 22.

And a sealing element 24 is arranged between the telescopic end of the hydraulic machine 11 and the bottom wall of the protective shell 3.

When the frequency converter is used specifically, the frequency converter is placed on the support rod 4 in the protective shell 3, the hydraulic machine 11 is started, when the telescopic end of the hydraulic machine 11 moves upwards, the hydraulic machine 11 drives the connecting rod 14 to move upwards through the moving rod 12, the connecting rod 14 drives the moving plate 15 to move upwards, the moving plate 15 drives the toothed plate 19 to move upwards, the toothed plate 19 drives the driving wheel 18 to rotate, the driving wheel 18 drives the baffle plate 21 to rotate through the rotating shaft 17, the baffle plate 21 rotates away from the position of the gas outlet net plate 20, due to the arrangement of the one-way valve II 16, gas can only flow from the lower part of the moving plate 15 to the upper part of the moving plate 15, therefore, the pressure above the moving plate 15 in the protective shell 3 is increased in the ascending process of the moving plate 15, heat generated by the frequency converter is rapidly discharged out of the protective shell 3 through the gas outlet net plate 20, when the telescopic end of the hydraulic machine 11 moves downwards, the hydraulic machine 11 drives the moving rod 12 to move downwards, the moving rod 12 drives the gas outlet plate 13 to move downwards, at the moment, the baffle 21 blocks the air outlet screen plate 20 to prevent air with dust from entering the protective shell 3 through the air outlet screen plate 20, the air can only flow out of the limiting cylinder 8 to the limiting cylinder 8 through the arrangement of the three one-way valve 9, so that the air in the downward movement process of the air supply plate 13 flows into the limiting cylinder 8 through the three one-way valve 9, then is sent into the lower part of the protective over-moving plate 15 through the air supply hole 7 and is sprayed to the frequency converter on the supporting rod 4 through the two one-way valve 16, the cold air cooling process of the frequency converter is realized, in addition, in the process that the air flows into the limiting cylinder 8 through the one-way valve, the dust is isolated to the outside of the protective shell 3 through the arrangement of the dustproof net 10, and the dust is prevented from entering the protective over-inner frequency converter to form accumulation.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A frequency converter protection device is characterized in that: the cooling dustproof assembly comprises an air supply hole, a limiting cylinder, a three-way valve, a dustproof net, a hydraulic machine, a moving rod, an air supply plate, a connecting rod, a moving plate and a two-way valve, wherein the air supply hole is symmetrically arranged on the bottom wall of the protective shell, the limiting cylinder is symmetrically arranged under the bottom wall of the protective shell and is arranged under the air supply hole, the three-way valve is uniformly arranged at one end, close to the protective shell, of the limiting cylinder, the dustproof net is detachably arranged on the side surface of the limiting cylinder and is arranged on one side of the three-way valve, one end of the hydraulic machine is arranged on the bottom plate, the other end of the hydraulic machine penetrates through the bottom wall of the protective shell and is arranged in the protective shell, the movable rod is of an inverted U-shaped structure, the movable rod is arranged on the telescopic end of the hydraulic machine, the two ends of the movable rod penetrate through the air supply holes and are arranged in the limiting cylinder, the air supply plates are symmetrically arranged below the two ends of the movable rod, the connecting rod is arranged on the movable rod, the movable plate is arranged on the connecting rod, and the two check valves are uniformly arranged on the movable plate.

2. A frequency converter protection device according to claim 1, characterized in that: the radiator unit includes pivot, drive wheel, pinion rack, the otter board and the baffle of giving vent to anger, the pivot symmetry is located on the side of protective housing, the drive wheel is connected in pivot and the rotatable inside wall of locating the protective housing, portable the running-through bracing piece symmetry of pinion rack one end is located on the movable plate and the other end is located the bracing piece, the pinion rack meshes with the drive wheel mutually, the otter board of giving vent to anger uses the pivot to be round structure setting as the center, the even embedded side of locating the protective housing of the otter board of giving vent to anger, the baffle is connected in the pivot and is kept away from the one end of drive wheel and locate the otter board one side of giving vent to anger.

3. A frequency converter protection device according to claim 2, characterized in that: the protective shell is provided with an air outlet pipe, and a first check valve is arranged in the air outlet pipe.

4. A frequency converter protection device according to claim 3, characterized in that: and a sealing element is arranged between the telescopic end of the hydraulic machine and the bottom wall of the protective shell.