CN214674863U

CN214674863U - Automatic cooling device of low-voltage frequency converter

Info

Publication number: CN214674863U
Application number: CN202121076726.5U
Authority: CN
Inventors: 段随庆; 汪涛; 邢伟龙
Original assignee: Henan Jinkong Tianqing Coal Chemical Co Ltd
Current assignee: Henan Jinkong Tianqing Coal Chemical Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-09
Anticipated expiration: 2031-05-19

Abstract

The utility model relates to a switch board equipment field, in particular to automatic heat sink of low-voltage inverter contains and sets up the radiator unit who is used for blowing the ash cooling to the converter fin in the converter switch board, radiator unit contains: the gas tank is provided with a gas source distributor connected with the gas tank through a gas source pipeline, and the output of the gas source distributor sends cooling gas to the radiating fins of each frequency converter through gas source pipeline branches; and the air source pipeline is provided with an electromagnetic valve connected with the electric control module of the power distribution room through a control circuit. The utility model discloses simple structure, the modern design, rationally, utilize instrument compressed air regularly to blow the ash to the fin of converter, also accessible time relay adjustment time is in summer continuous to the cooling dust removal of blowing of converter fin, and extension converter life eliminates the manpower and demolishs the unsafe factor that the converter carries out the deashing, and easy to maintain can effectively ensure the long-time stable continuous operation of low-voltage inverter, reduces the fault rate, has better application prospect.

Description

Automatic cooling device of low-voltage frequency converter

Technical Field

The utility model relates to a switch board equipment field, in particular to automatic heat sink of low-voltage inverter.

Background

The distribution room that a plurality of converters were installed in concentrated operating environment temperature is high, and some outdoor converters, the dust is big, and long-time unclean can block up the converter fin, leads to the frequent high temperature warning of converter, and utilizes the air conditioner cooling power consumption height. The cooling fin jam can appear after current low-voltage inverter operation one year, and its self cooling fan is not enough to drop the temperature when summer, leads to its heat to rise, and life shortens, still often can cause the trip outage phenomenon because of the temperature is high, threatens continuous operation's equipment stability. At present, the radiating fins of most frequency converters are arranged on the back, and are not suitable for cleaning during operation, even if the frequency converters are not thoroughly cleaned. And need demolish the converter when clearing up the fin, do not utilize production.

Disclosure of Invention

Therefore, the utility model provides an automatic heat sink of low-voltage inverter, simple structure, design science, reasonable prolongs converter and controlgear's continuous operation duration, reduces the equipment fault rate.

According to the utility model provides a design, an automatic heat sink of low-voltage inverter contains and sets up in the converter block room and be used for blowing the radiator unit of ash cooling to the converter fin, radiator unit contains: the gas tank is provided with a gas source distributor connected with the gas tank through a gas source pipeline, and the output of the gas source distributor sends cooling gas to the radiating fins of each frequency converter through gas source pipeline branches; and the air source pipeline is provided with an electromagnetic valve connected with the electric control module of the power distribution room through a control circuit.

As the utility model discloses automatic heat sink of low-voltage inverter, furtherly, the air supply pipeline with the air supply pipeline branch all adopts PVC air supply pipe.

As the utility model discloses automatic heat sink of low-voltage inverter, furtherly, control circuit contains: the switch knob, and a time relay I and a time relay II which are connected with the switch knob and used for controlling the intermittent power-on action of the electromagnetic valve.

As the utility model discloses automatic heat sink of low-voltage inverter, furtherly, control circuit still contains: the pressure switch is connected with the switch knob and used for measuring the pressure of the compressed air in the air tank, and the motor contactor is connected with the pressure switch and used for controlling the driving action of the inflating motor of the air tank.

As the utility model discloses automatic heat sink of low-voltage inverter, furtherly, each air supply pipeline branch sets up in the converter lower part.

As the utility model discloses automatic heat sink of low-voltage inverter, furtherly, each air supply pipeline branch extends to in the converter fin space.

The utility model has the advantages that:

the utility model discloses simple structure, the modern design, rationally, utilize instrument compressed air regularly to blow the ash to the fin of converter, also accessible time relay adjustment time is in summer continuous to the cooling dust removal of blowing of converter fin, can prolong converter life, eliminates the manpower simultaneously and demolishs the unsafe factor that the converter carries out the deashing, and easy to maintain can effectively ensure the long-time stable continuous operation of low-voltage inverter, reduces its fault rate, has better application prospect.

Description of the drawings:

FIG. 1 is a schematic diagram of an automatic cooling device of a low-voltage inverter according to an embodiment;

FIG. 2 is one of the schematic diagrams of the control circuit in the embodiment;

FIG. 3 is a second schematic diagram of the control circuit in the embodiment.

In the figure, reference numeral 1 denotes a frequency converter, reference numeral 2 denotes an air source distributor, reference numeral 3 denotes an air source pipeline, reference numeral 4 denotes an electromagnetic valve, and reference numeral 5 denotes a heat sink.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the accompanying drawings and technical solutions, and embodiments of the present invention will be described in detail by way of preferred examples, but the embodiments of the present invention are not limited thereto.

The embodiment of the utility model provides a, it is shown with reference to fig. 1, provide an automatic heat sink of low-voltage inverter, contain and set up and be used for blowing the radiator unit of ash cooling to 1 fin 5 of converter in the converter electricity distribution room, radiator unit contains: the gas tank is provided with a gas source distributor 2 connected with the gas tank through a gas source pipeline 3, and the output of the gas source distributor 2 sends cooling gas into the frequency converter radiating fins 5 through gas source pipeline branches; and the air source pipeline is provided with an electromagnetic valve 4 connected with the electric control module of the power distribution room through a control circuit. Simple structure, the design is scientific, it is reasonable, can be in the place that has the instrument air, through increasing solenoid valve 4, time relay, air source distributor 2 and several air supply pipeline 3, realize utilizing instrument compressed air regularly to blow the grey dust of the fin of converter, also can blow the cooling dust removal of cooling to the converter fin in summer through time relay adjustment time in succession, can prolong converter life, eliminate the manpower simultaneously and demolish the unsafe factor that the converter carries out the deashing, promote distribution room equipment operating stability, reduce the converter fault rate.

As the embodiment of the utility model provides an automatic heat sink of low-voltage inverter, furtherly, the air supply pipeline with the air supply pipeline branch all can adopt PVC air supply pipe. Furthermore, each air source pipeline branch is arranged at the lower part of the frequency converter. Furthermore, each air source pipeline branch extends to a gap of a radiating fin of the frequency converter. At present, the radiating fins of most frequency converters are arranged on the back, and are not suitable for cleaning during operation, even if the frequency converters are not thoroughly cleaned. In the scheme, referring to fig. 1, a plurality of PVC pipes can be introduced into the lower part of the frequency converter, so that dust removal and cooling of the heat sink of the frequency converter can be performed at regular time (with adjustable time), the continuous operation time of the frequency converter and the control equipment thereof is prolonged, and the failure rate is correspondingly reduced; and the maintenance is convenient, the throwing and withdrawing are free, and the operation of the main equipment cannot be influenced.

As the utility model provides a low-voltage inverter automatic heat sink, furtherly, control circuit contains: the switch knob, and a time relay I and a time relay II which are connected with the switch knob and used for controlling the intermittent power-on action of the electromagnetic valve.

Referring to fig. 2, a live wire enters a control loop from a safety (FU) to a switch knob (SA), after the switch knob is put into a working position, a coil of a time relay KT2 is electrified and delayed for 2 hours (time is adjustable), an auxiliary point KT2 ' of the time relay KT2 is closed, an electromagnetic valve is electrified and acts to start soot blowing of a frequency converter, at the moment, the time relay KT1 is also electrified and starts timing, 5 minutes are assumed to be set, and the action is shown to break an auxiliary contact KT1 ' to lose power of the time relay KT2, so that the auxiliary point of the time relay KT2 ' is disconnected, the electromagnetic valve loses power and stops blowing, an auxiliary normally closed point of the time relay KT1 is closed after the power is lost, and the cycle enters the period of the next round. The set time of the time relay KT2 is the time for interval spraying, and the set time of the time relay KT1 is the time for blowing, and generally, the time interval is two hours, and the time for blowing is 5 minutes. Compressed air of the instrument is supplied to the air source distributor through the electromagnetic valve, and then is subjected to timed soot blowing or cooling (soot blowing time and interval time can be adjusted through time set by the time relay) for the cooling fins of the frequency converter through the branch air source pipes.

As the utility model provides a low-voltage inverter automatic heat sink, furtherly, control circuit still contains: the pressure switch is connected with the switch knob and used for measuring the pressure of the compressed air in the air tank, and the motor contactor is connected with the pressure switch and used for controlling the driving action of the inflating motor of the air tank.

Referring to fig. 3, compressed air is supplied to the air source distributor by the air tank through the electromagnetic valve, and then is subjected to timed soot blowing or cooling for the cooling fins of the frequency converter through each branch air source pipe (the soot blowing time and the interval time can be adjusted by the time set by the time relay). After an air switch is turned on, a live wire is led from an L3 to a switch knob (SA) through a Fuse (FU) to enter a control loop, the switch knob is put into a working position, a coil of a contactor is electrified to enable a KM contact of a primary loop to be sucked, the pressure switch is changed from a closed point to an open point after compressed air in a gas tank reaches a pressure switch set pressure of 0.4MPa, a motor contactor is powered off to stop a motor to indicate that gas filling of the gas tank is finished, meanwhile, an auxiliary point KT2 of a time relay KT2 is also powered on and is closed after 2 hours (time is adjustable), an electromagnetic valve is powered on to act to start soot blowing of a frequency converter, at the moment, a time relay KT1 is also powered on to start timing, a set time is assumed to be 5 minutes to indicate that the auxiliary contact KT1 is powered off to cause the auxiliary point KT2 of the time relay 2 to be powered off, the electromagnetic valve is powered off to stop blowing when the electricity is powered, and the auxiliary point is closed after the time relay KT1 is powered off, the cycle begins to cycle into the next cycle. The set time of the time relay KT2 is the time of interval spraying, and the set time of the time relay KT1 is the time of blowing, and generally the interval can be set as two hours, and the blowing is carried out for 5 minutes, so that the use is more convenient and reliable.

The term "and/or" herein means that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above and various combinations of the technical features and structures proposed by the present invention may be made without departing from the concept of the present invention, and the scope of the present invention is defined by the appended claims. The foregoing description of specific exemplary embodiments of the invention is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides an automatic heat sink of low-voltage inverter, contains and sets up in the converter electricity distribution room and be used for blowing the radiator unit of ash cooling to the converter fin, its characterized in that, radiator unit contains: the gas tank is provided with a gas source distributor connected with the gas tank through a gas source pipeline, and the output of the gas source distributor sends cooling gas to the radiating fins of each frequency converter through gas source pipeline branches; and the air source pipeline is provided with an electromagnetic valve connected with the electric control module of the power distribution room through a control circuit.

2. The automatic cooling device of a low-voltage inverter according to claim 1, wherein the gas source pipeline and the gas source pipeline branch are both PVC gas source pipes.

3. The automatic cooling device of a low-voltage inverter according to claim 1 or 2, wherein the control circuit comprises: the switch knob, and a time relay I and a time relay II which are connected with the switch knob and used for controlling the intermittent power-on action of the electromagnetic valve.

4. The automatic cooling device of a low-voltage inverter of claim 3, wherein the control circuit further comprises: the pressure switch is connected with the switch knob and used for measuring the pressure of the compressed air in the air tank, and the motor contactor is connected with the pressure switch and used for controlling the driving action of the inflating motor of the air tank.

5. The automatic cooling device of a low-voltage inverter of claim 1, wherein each of the air source pipeline branches is disposed at a lower portion of the inverter.

6. The automatic cooling device of a low-voltage inverter of claim 5, wherein each of the air source pipeline branches extends into a gap between cooling fins of the inverter.