阅读说明：本技术 一种矿用变频器散热装置 (Heat dissipation device for mining frequency converter ) 是由 黄学满 于 2020-12-31 设计创作，主要内容包括：本发明涉及散热设备技术领域,为了解决现有技术中,由于矿用变频器上堆积的灰尘不能及时清理从而影响散热的问题,提供了一种矿用变频器散热装置,包括设置在变频器外壳一侧的连接架,连接架上设置有散热结构,散热结构包括叶轮和驱动叶轮转动的驱动电路,驱动电路设置有控制件,控制件包括装有水银的控制管,水银位于控制管底部,控制管的上部和底部分别接入驱动电路中,水银受热伸长到控制管上部；叶轮包括多个叶片,叶片上设置有清洁件,清洁件与外壳相抵。(The invention relates to the technical field of heat dissipation equipment, and aims to solve the problem that heat dissipation is affected due to the fact that dust accumulated on a mining frequency converter cannot be cleaned in time in the prior art, and provides a heat dissipation device for the mining frequency converter, which comprises a connecting frame arranged on one side of a shell of the mining frequency converter, wherein a heat dissipation structure is arranged on the connecting frame and comprises an impeller and a driving circuit for driving the impeller to rotate, the driving circuit is provided with a control piece, the control piece comprises a control tube filled with mercury, the mercury is positioned at the bottom of the control tube, the upper part and the bottom of the control tube are respectively connected into the driving circuit, and the mercury is heated and extends to the upper part; the impeller comprises a plurality of blades, cleaning pieces are arranged on the blades, and the cleaning pieces are abutted to the shell.)

1. The utility model provides a mining converter heat abstractor which characterized in that: the heat dissipation structure comprises an impeller and a driving circuit for driving the impeller to rotate, the driving circuit is provided with a control piece, the control piece comprises a control tube filled with mercury, the mercury is positioned at the bottom of the control tube, the upper part and the bottom of the control tube are respectively connected into the driving circuit, and the mercury is heated and extends to the upper part of the control tube; the impeller comprises a plurality of blades, cleaning pieces are arranged on the blades, and the cleaning pieces are abutted to the outer shell.

2. The mining frequency converter heat dissipation device of claim 1, wherein: the impeller is positioned in the center of the shell, the blade comprises a fixed end and a sliding end, the front end of the fixed end is provided with a sliding groove, and the rear end of the sliding end is in sliding connection with the sliding groove; the front end of the sliding end is provided with a cleaning piece.

3. The mining frequency converter heat dissipation device of claim 2, wherein: the rear end of the sliding groove is provided with an elastic piece, and the rear end of the sliding end is connected with the elastic piece.

4. The mining frequency converter heat dissipation device of claim 2 or 3, wherein: the connecting frame is further provided with a limiting frame matched with the shell in shape, the sliding end slides out of the fixed end, and the front end of the sliding end abuts against the limiting frame.

5. The mining frequency converter heat dissipation device of claim 2, wherein: and buffer parts are arranged at two ends of the sliding groove.

6. The mining frequency converter heat dissipation device of claim 1, wherein: the cleaning element is a foam-rubber cushion.

Technical Field

The invention relates to the technical field of heat dissipation equipment, in particular to a mining frequency converter heat dissipation device.

Background

The frequency converter has been on the market in China for nearly 20 years, and due to the excellent performance and considerable power-saving effect, the frequency converter is widely applied to various industries. The application of the mining frequency converter is later than that of other frequency converters, but the development situation is rapid in the last five years, and the mining frequency converter has the trend of the first of all industries. The most fundamental reason is that the lagging electrical equipment cannot meet the requirement of industrial production, the old equipment has low efficiency and large energy consumption, and the technical problems in the development of the explosion-proof industry are to be solved urgently. Energy conservation, consumption reduction and low carbon emission are objective requirements for social development, and the state pays attention to technical upgrading and transformation of the explosion-proof industry. From the plan of 'eleven five' to the present, the technical development of the explosion-proof industry is changing day by day, and the application of the mining explosion-proof frequency converter is becoming wide.

Because all elements of the existing mining frequency converter are arranged in the explosion-proof type explosion-proof cavity, air cannot flow freely, and the problem of heat dissipation becomes one of the important problems to be solved by the frequency converter. The common heat dissipation of the mining frequency converter at present comprises natural air cooling, heat pipe heat dissipation and water cooling heat dissipation. Although the high-efficiency heat dissipation of the frequency converter can be realized by adopting the heat dissipation modes, the mining frequency converter is in a dust flying condition for a long time in the use environment of the mining frequency converter, dust can be accumulated on the housing of the mining frequency converter and devices such as a heat pipe or a water cooling device, and once the dust is excessively accumulated, the heat dissipation effect can be seriously influenced. In the prior art, workers usually clean the shell, but the workers do not know when the dust on the shell is accumulated too much, so that timely cleaning cannot be carried out.

Disclosure of Invention

The invention aims to provide a mining frequency converter heat dissipation device to solve the problem that heat dissipation is affected due to the fact that dust accumulated on a mining frequency converter cannot be cleaned in time in the prior art.

The basic scheme provided by the invention is as follows: a heat dissipation device for a mining frequency converter comprises a connecting frame arranged on one side of a shell of the frequency converter, wherein a heat dissipation structure is arranged on the connecting frame and comprises an impeller and a driving circuit for driving the impeller to rotate, the driving circuit is provided with a control piece, the control piece comprises a control tube filled with mercury, the mercury is positioned at the bottom of the control tube, the upper part and the bottom of the control tube are respectively connected into the driving circuit, and the mercury is heated and extends to the upper part of the control tube; the impeller comprises a plurality of blades, cleaning pieces are arranged on the blades, and the cleaning pieces are abutted to the shell.

The basic scheme has the working principle and the beneficial effects that: in this scheme, heat dissipation mechanism is used for carrying out the forced air cooling to the converter shell, in mining converter use, the temperature of shell can rise gradually, after the temperature of shell risees, the control is heated, mercury in the control tube is heated and is extended to control tube upper portion, drive circuit just also switches on this moment, so the impeller begins to rotate under drive circuit's drive, the rotation of impeller can accelerate the flow of air current around the shell, thereby take away the radiating heat of shell fast, just also accelerated the radiating efficiency of shell.

Considering that accumulational dust also can influence the heat dissipation of shell on the shell, therefore in this scheme, still be provided with the cleaning piece on the blade, at the impeller pivoted in-process, the cleaning piece moves under the drive of slip end, because the cleaning piece offsets with the shell, consequently can be to clean the shell in the in-process back that the cleaning piece moved, clear up accumulational dust on the shell to guarantee the normal heat dissipation of shell.

Compared with the prior art, in the scheme, through the matching of the arranged blades and the driving circuit, after the temperature of the shell rises, the control part automatically controls the driving circuit to be conducted, the blades rotate, and therefore the shell is cooled;

2. considering that accumulational dust also can influence the heat dissipation on the shell, therefore in this scheme, still be provided with the cleaning piece on the impeller and set up the shell, utilize the rotation of impeller to drive the cleaning piece and clean the shell, need not additionally to set up power spare and drive the cleaning piece, further practiced thrift heat abstractor's cost.

The first preferred scheme is as follows: preferably, the impeller is positioned in the center of the shell, the blade comprises a fixed end and a sliding end, the front end of the fixed end is provided with a sliding chute, and the rear end of the sliding end is in sliding connection with the sliding chute; the front end of the sliding end is provided with a cleaning piece. Has the advantages that: considering that the cleaning member that the shell offseted can influence the shell heat dissipation to a certain extent, however the cleaning member needs to offset with the shell again and just can clean the shell, consequently in order to reduce the influence that the cleaning member led to the fact the shell heat dissipation, just need to reduce the area that cleaning member and shell offseted, and in case the area that cleaning member and shell offseted reduces the back, can't carry out comprehensive cleanness to the one side that offsets with cleaning member on the shell again, consequently, in this scheme, set up the blade and constitute by sliding connection's stiff end and sliding end, so in the blade motion process, the sliding end outwards slides under the effect of centrifugal force, the blade extends gradually, in this process, the cleaning member that sets up on the sliding end is the heliciform motion, thereby clean the shell, guaranteed that the cleaning member can carry out comprehensive cleanness to the shell.

The preferred scheme II is as follows: preferably, as a first preferred scheme, the rear end of the sliding groove is provided with an elastic piece, and the rear end of the sliding end is connected with the elastic piece. Has the advantages that: in this scheme, after the spout sets up the elastic component, when the blade does not rotate, the slip end then retracts the stiff end under the effect of elastic component, then when the blade rotates next time, the blade extends again, and the cleaning member then can follow the outside motion in shell center again, accomplishes the comprehensive cleanness to the shell.

The preferable scheme is three: preferably, as the first preferred embodiment or the second preferred embodiment, the connecting frame is further provided with a limiting frame matched with the shell in shape, and after the sliding end slides out of the fixed end, the front end of the sliding end abuts against the limiting frame. Has the advantages that: considering that the moving track of the cleaning piece is circular after the blade rotates, the shell is not circular generally and is rectangular generally, if the length of the blade is too short, the cleaning piece cannot clean four corners of the shell, and if the length of the blade is too long, the cleaning piece is separated from the shell in a certain period of time in the moving process.

The preferable scheme is four: preferably, the sliding groove is provided with a buffer at both ends. Has the advantages that: in the scheme, the buffer parts are further arranged at the two ends of the sliding groove and used for buffering the impact in order to reduce the impact between the sliding end and the fixed end in the process of extending or retracting the sliding end, so that the impact generated when the sliding end and the fixed end extend or retract is reduced, and the damage caused by the impact to the sliding end and the fixed end is reduced.

The preferable scheme is five: preferably, the cleaning element is a foam pad. Has the advantages that: in view of the fact that the coal mine is relatively wet, the sponge mat capable of absorbing water is adopted as the cleaning piece in the scheme, and the cleaning piece can better clean dust after absorbing moisture in air.

Drawings

Fig. 1 is a front view of a first embodiment of a heat dissipation device of a mining frequency converter according to the present invention;

fig. 2 is a front view of the blade of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the cleaning machine comprises a shell 1, a connecting frame 2, a motor 3, a rotating shaft 4, a blade 5, a fixed end 6, a sliding groove 61, a sliding end 7 and a cleaning piece 71.

Example one

Substantially as shown in figure 1: a heat dissipation device for a mining frequency converter comprises an L-shaped connecting frame 2 arranged on one side of a frequency converter shell 1, in the embodiment, the connecting frame 2 is located on the right side of the shell 1, a heat dissipation structure is arranged on the connecting frame 2 and comprises an impeller and a driving circuit for driving the impeller to rotate, the impeller is located in the center of the shell 1 and comprises a rotating shaft 4 and a plurality of blades 5, a connecting hole is formed in the center of the shell 1, the bottom of the rotating shaft 4 is located in the connecting hole, and the plurality of blades 5 are located in the middle of the rotating shaft 4 and are circumferentially arranged along the outer surface of the rotating shaft 4; blade 5 includes stiff end 6 and slip end 7, and the rear end and the pivot 4 of stiff end 6 are connected, and in this embodiment, stiff end 6 can be dismantled with pivot 4 and be connected, and is concrete, and 4 surfaces of pivot are provided with the draw-in groove, and 6 rear ends of stiff end are provided with the joint portion that matches with the draw-in groove, and stiff end 6 and 4 joints of pivot, in other embodiments, stiff end 6 also can fixed connection with pivot 4.

The front end of stiff end 6 is provided with spout 61, and the both ends of spout 61 are provided with the bolster, and in this embodiment, the bolster is the rubber pad, and the bolster bonds at the both ends of spout 61. The rear end of the sliding groove 61 is provided with an elastic part, the rear end of the sliding end 7 is connected with the sliding groove 61 in a sliding mode, the rear end of the sliding end 7 is connected with the elastic part, in the embodiment, the elastic part is a pressure spring, and the elastic part is fixedly connected with the rear end of the sliding groove 61.

The blade 5 is provided with a cleaning piece 71, specifically, the front end of the sliding end 7 is provided with the cleaning piece 71, the cleaning piece 71 is located on the lower surface of the sliding end 7, and the lower end of the cleaning piece 71 is abutted against the shell 1.

The driving circuit is provided with a power supply, a lead, a motor 3 and a control piece, the power supply, the motor 3 and the control piece are connected through the lead, the motor 3 is positioned on the connecting frame 2, an output shaft of the motor 3 is provided with a bevel gear, and the outer surface of the upper part of the rotating shaft 4 is a conical tooth surface meshed with the bevel gear.

The control piece is including the control tube that is equipped with mercury, and mercury is located the control tube bottom, and during the upper portion and the bottom of control tube inserted drive circuit respectively, mercury is heated the extension and reaches control tube upper portion, and in this embodiment, the control tube is circular pipe, and the material of pipe adopts nonconducting and the strong material of heat conductivity, adopts plastics in this embodiment. The control piece is vertically arranged on the shell 1, the height of the mercury is one half of the height of the control tube, the bottom of the control tube extends into one end with a lead, the position with the height of three-quarter of the control piece extends into one end with the lead, when the control piece is heated, the mercury expands when heated, the height of the mercury rises, and when the height of the mercury reaches three-quarter of the control tube, the lead at the bottom and the upper part of the control piece is simultaneously submerged by the mercury, and the driving circuit is switched on.

The specific implementation process is as follows: in the initial state, the mercury in the control member is at half height of the control tube, the elastic member in the vane 5 is at the original length, and the sliding end 7 is retracted into the fixed end 6 as shown in fig. 2.

In the using process, the temperature of the shell 1 gradually rises, the temperature of the control element arranged on the shell 1 also rises, so that mercury in the control element expands and rises along the control tube, when the mercury height reaches three quarters of the height of the control tube, at the moment, because the conducting wires at the bottom and the upper part of the control tube are simultaneously submerged by mercury, the driving circuit is conducted, and the motor 3 in the driving circuit operates, so that the rotating shaft 4 is driven to rotate.

In the rotating process of the rotating shaft 4, the sliding end 7 gradually extends out of the fixed end 6 under the action of centrifugal force, when the rotating speed of the rotating shaft 4 is low, the sliding distance of the sliding end 7 is short, when the rotating speed of the rotating shaft 4 is high, the sliding distance of the sliding end 7 is long, and when the rear end (the end, away from the rotating shaft 4, of the sliding end 7) of the sliding end 7 slides to the front end of the sliding groove 61, the sliding end 7 does not slide outwards any more, and meanwhile, the elastic piece is in an extending state under the pulling of the sliding end 7. The movement of the sliding end 7 drives the cleaning piece 71 to move on the shell 1, and the cleaning piece 71 wipes the shell 1 to clean the shell 1. Description of the drawings: in this embodiment, the end of the impeller away from the rotating shaft 4 is front, and the end facing the rotating shaft 4 is rear.

When the temperature of the shell 1 is reduced, the temperature of the control element is reduced, the mercury starts to shrink, the height of the mercury is reduced, after the temperature is reduced to below three-fourths, the conducting wires at the bottom and the upper part of the control tube are not conducted any more, the driving circuit is disconnected, the motor 3 stops running, the rotating shaft 4 does not rotate any more, the elastic element starts to shrink until the original length is recovered, and the shrunk elastic element can pull the sliding end 7 to retract to the fixed end 6 until the initial state is recovered.

Example two

The difference from the first embodiment is that in the present embodiment, the connecting frame 2 is further provided with a limiting frame matched with the shape of the housing 1, and after the sliding end 7 slides out of the fixed end 6, the front end of the sliding end 7 abuts against the limiting frame. In this embodiment, taking the rectangular housing 1 as an example, the limiting frame is a rectangular frame.

In this embodiment, after being provided with spacing frame, at the rotation in-process of impeller, slip end 7 receives the effect of centrifugal force and spacing frame's resistance, and the length of blade 5 can be along with the length change on the corresponding limit of spacing frame to make the length of blade 5 the same with corresponding limit length all the time, thereby can clean shell 1 all the time, guaranteed clean effect, and then guaranteed shell 1's radiating effect.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.